blob: 14864cc6775c9edafc6cd0a8f9d4bcc936b017f6 [file] [log] [blame]
Zhu Yib481de92007-09-25 17:54:57 -07001/******************************************************************************
2 *
Reinette Chatreeb7ae892008-03-11 16:17:17 -07003 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
Zhu Yib481de92007-09-25 17:54:57 -07004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
Winkler, Tomas759ef892008-12-09 11:28:58 -080025 * Intel Linux Wireless <ilw@linux.intel.com>
Zhu Yib481de92007-09-25 17:54:57 -070026 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
Zhu Yib481de92007-09-25 17:54:57 -070030#include <linux/kernel.h>
31#include <linux/module.h>
Zhu Yib481de92007-09-25 17:54:57 -070032#include <linux/init.h>
33#include <linux/pci.h>
34#include <linux/dma-mapping.h>
35#include <linux/delay.h>
36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
38#include <linux/wireless.h>
39#include <linux/firmware.h>
Zhu Yib481de92007-09-25 17:54:57 -070040#include <linux/etherdevice.h>
41#include <linux/if_arp.h>
42
43#include <net/ieee80211_radiotap.h>
John W. Linville7e272fc2008-09-24 18:13:14 -040044#include <net/lib80211.h>
Zhu Yib481de92007-09-25 17:54:57 -070045#include <net/mac80211.h>
46
47#include <asm/div64.h>
48
Samuel Ortiza3139c52008-12-19 10:37:09 +080049#define DRV_NAME "iwl3945"
50
Tomas Winkler600c0e12008-12-19 10:37:04 +080051#include "iwl-commands.h"
Zhu Yib481de92007-09-25 17:54:57 -070052#include "iwl-3945.h"
Tomas Winklerbddadf82008-12-19 10:37:01 +080053#include "iwl-3945-fh.h"
Zhu Yib481de92007-09-25 17:54:57 -070054#include "iwl-helpers.h"
Kolekar, Abhijeet5747d472008-12-19 10:37:18 +080055#include "iwl-core.h"
Samuel Ortizd20b3c62008-12-19 10:37:15 +080056#include "iwl-dev.h"
Zhu Yib481de92007-09-25 17:54:57 -070057
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +080058static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -080059 struct iwl3945_tx_queue *txq);
Christoph Hellwig416e1432007-10-25 17:15:49 +080060
Zhu Yib481de92007-09-25 17:54:57 -070061/******************************************************************************
62 *
63 * module boiler plate
64 *
65 ******************************************************************************/
66
67/* module parameters */
Cahill, Ben M6440adb2007-11-29 11:09:55 +080068static int iwl3945_param_disable_hw_scan; /* def: 0 = use 3945's h/w scan */
Wu, Fengguang95aa1942008-12-17 16:52:30 +080069static u32 iwl3945_param_debug; /* def: 0 = minimal debug log messages */
Cahill, Ben M6440adb2007-11-29 11:09:55 +080070static int iwl3945_param_disable; /* def: 0 = enable radio */
Ben Cahill9fbab512007-11-29 11:09:47 +080071static int iwl3945_param_antenna; /* def: 0 = both antennas (use diversity) */
Cahill, Ben M6440adb2007-11-29 11:09:55 +080072int iwl3945_param_hwcrypto; /* def: 0 = use software encryption */
Ron Rindjunskydfe7d452008-04-15 16:01:45 -070073int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
Zhu Yib481de92007-09-25 17:54:57 -070074
75/*
76 * module name, copyright, version, etc.
Zhu Yib481de92007-09-25 17:54:57 -070077 */
78
79#define DRV_DESCRIPTION \
80"Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
81
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +080082#ifdef CONFIG_IWL3945_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -070083#define VD "d"
84#else
85#define VD
86#endif
87
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +080088#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Zhu Yib481de92007-09-25 17:54:57 -070089#define VS "s"
90#else
91#define VS
92#endif
93
Kolekar, Abhijeeteaa686c2008-12-19 10:37:17 +080094#define IWL39_VERSION "1.2.26k" VD VS
Reinette Chatreeb7ae892008-03-11 16:17:17 -070095#define DRV_COPYRIGHT "Copyright(c) 2003-2008 Intel Corporation"
Tomas Winklera7b75202008-12-11 10:33:41 -080096#define DRV_AUTHOR "<ilw@linux.intel.com>"
Kolekar, Abhijeeteaa686c2008-12-19 10:37:17 +080097#define DRV_VERSION IWL39_VERSION
Zhu Yib481de92007-09-25 17:54:57 -070098
Zhu Yib481de92007-09-25 17:54:57 -070099
100MODULE_DESCRIPTION(DRV_DESCRIPTION);
101MODULE_VERSION(DRV_VERSION);
Tomas Winklera7b75202008-12-11 10:33:41 -0800102MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
Zhu Yib481de92007-09-25 17:54:57 -0700103MODULE_LICENSE("GPL");
104
Johannes Berg8318d782008-01-24 19:38:38 +0100105static const struct ieee80211_supported_band *iwl3945_get_band(
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800106 struct iwl_priv *priv, enum ieee80211_band band)
Zhu Yib481de92007-09-25 17:54:57 -0700107{
Johannes Berg8318d782008-01-24 19:38:38 +0100108 return priv->hw->wiphy->bands[band];
Zhu Yib481de92007-09-25 17:54:57 -0700109}
110
Zhu Yib481de92007-09-25 17:54:57 -0700111/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
112 * DMA services
113 *
114 * Theory of operation
115 *
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800116 * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer
117 * of buffer descriptors, each of which points to one or more data buffers for
118 * the device to read from or fill. Driver and device exchange status of each
119 * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty
120 * entries in each circular buffer, to protect against confusing empty and full
121 * queue states.
122 *
123 * The device reads or writes the data in the queues via the device's several
124 * DMA/FIFO channels. Each queue is mapped to a single DMA channel.
Zhu Yib481de92007-09-25 17:54:57 -0700125 *
126 * For Tx queue, there are low mark and high mark limits. If, after queuing
127 * the packet for Tx, free space become < low mark, Tx queue stopped. When
128 * reclaiming packets (on 'tx done IRQ), if free space become > high mark,
129 * Tx queue resumed.
130 *
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800131 * The 3945 operates with six queues: One receive queue, one transmit queue
132 * (#4) for sending commands to the device firmware, and four transmit queues
133 * (#0-3) for data tx via EDCA. An additional 2 HCCA queues are unused.
Zhu Yib481de92007-09-25 17:54:57 -0700134 ***************************************************/
135
Samuel Ortizd20b3c62008-12-19 10:37:15 +0800136int iwl3945_x2_queue_used(const struct iwl_queue *q, int i)
Zhu Yib481de92007-09-25 17:54:57 -0700137{
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800138 return q->write_ptr > q->read_ptr ?
139 (i >= q->read_ptr && i < q->write_ptr) :
140 !(i < q->read_ptr && i >= q->write_ptr);
Zhu Yib481de92007-09-25 17:54:57 -0700141}
142
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800143/**
144 * iwl3945_queue_init - Initialize queue's high/low-water and read/write indexes
145 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800146static int iwl3945_queue_init(struct iwl_priv *priv, struct iwl_queue *q,
Zhu Yib481de92007-09-25 17:54:57 -0700147 int count, int slots_num, u32 id)
148{
149 q->n_bd = count;
150 q->n_window = slots_num;
151 q->id = id;
152
Tomas Winklerc54b6792008-03-06 17:36:53 -0800153 /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
154 * and iwl_queue_dec_wrap are broken. */
Zhu Yib481de92007-09-25 17:54:57 -0700155 BUG_ON(!is_power_of_2(count));
156
157 /* slots_num must be power-of-two size, otherwise
158 * get_cmd_index is broken. */
159 BUG_ON(!is_power_of_2(slots_num));
160
161 q->low_mark = q->n_window / 4;
162 if (q->low_mark < 4)
163 q->low_mark = 4;
164
165 q->high_mark = q->n_window / 8;
166 if (q->high_mark < 2)
167 q->high_mark = 2;
168
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800169 q->write_ptr = q->read_ptr = 0;
Zhu Yib481de92007-09-25 17:54:57 -0700170
171 return 0;
172}
173
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800174/**
175 * iwl3945_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
176 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800177static int iwl3945_tx_queue_alloc(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800178 struct iwl3945_tx_queue *txq, u32 id)
Zhu Yib481de92007-09-25 17:54:57 -0700179{
180 struct pci_dev *dev = priv->pci_dev;
181
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800182 /* Driver private data, only for Tx (not command) queues,
183 * not shared with device. */
Zhu Yib481de92007-09-25 17:54:57 -0700184 if (id != IWL_CMD_QUEUE_NUM) {
185 txq->txb = kmalloc(sizeof(txq->txb[0]) *
186 TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
187 if (!txq->txb) {
Ian Schram01ebd062007-10-25 17:15:22 +0800188 IWL_ERROR("kmalloc for auxiliary BD "
Zhu Yib481de92007-09-25 17:54:57 -0700189 "structures failed\n");
190 goto error;
191 }
192 } else
193 txq->txb = NULL;
194
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800195 /* Circular buffer of transmit frame descriptors (TFDs),
196 * shared with device */
Zhu Yib481de92007-09-25 17:54:57 -0700197 txq->bd = pci_alloc_consistent(dev,
198 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
199 &txq->q.dma_addr);
200
201 if (!txq->bd) {
202 IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
203 sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
204 goto error;
205 }
206 txq->q.id = id;
207
208 return 0;
209
210 error:
Tomas Winkler3ac7f142008-07-21 02:40:14 +0300211 kfree(txq->txb);
212 txq->txb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700213
214 return -ENOMEM;
215}
216
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800217/**
218 * iwl3945_tx_queue_init - Allocate and initialize one tx/cmd queue
219 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800220int iwl3945_tx_queue_init(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800221 struct iwl3945_tx_queue *txq, int slots_num, u32 txq_id)
Zhu Yib481de92007-09-25 17:54:57 -0700222{
223 struct pci_dev *dev = priv->pci_dev;
224 int len;
225 int rc = 0;
226
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800227 /*
228 * Alloc buffer array for commands (Tx or other types of commands).
229 * For the command queue (#4), allocate command space + one big
230 * command for scan, since scan command is very huge; the system will
231 * not have two scans at the same time, so only one is needed.
232 * For data Tx queues (all other queues), no super-size command
233 * space is needed.
234 */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800235 len = sizeof(struct iwl3945_cmd) * slots_num;
Zhu Yib481de92007-09-25 17:54:57 -0700236 if (txq_id == IWL_CMD_QUEUE_NUM)
237 len += IWL_MAX_SCAN_SIZE;
238 txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
239 if (!txq->cmd)
240 return -ENOMEM;
241
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800242 /* Alloc driver data array and TFD circular buffer */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800243 rc = iwl3945_tx_queue_alloc(priv, txq, txq_id);
Zhu Yib481de92007-09-25 17:54:57 -0700244 if (rc) {
245 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
246
247 return -ENOMEM;
248 }
249 txq->need_update = 0;
250
251 /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
Tomas Winklerc54b6792008-03-06 17:36:53 -0800252 * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
Zhu Yib481de92007-09-25 17:54:57 -0700253 BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800254
255 /* Initialize queue high/low-water, head/tail indexes */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800256 iwl3945_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
Zhu Yib481de92007-09-25 17:54:57 -0700257
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800258 /* Tell device where to find queue, enable DMA channel. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800259 iwl3945_hw_tx_queue_init(priv, txq);
Zhu Yib481de92007-09-25 17:54:57 -0700260
261 return 0;
262}
263
264/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800265 * iwl3945_tx_queue_free - Deallocate DMA queue.
Zhu Yib481de92007-09-25 17:54:57 -0700266 * @txq: Transmit queue to deallocate.
267 *
268 * Empty queue by removing and destroying all BD's.
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800269 * Free all buffers.
270 * 0-fill, but do not free "txq" descriptor structure.
Zhu Yib481de92007-09-25 17:54:57 -0700271 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800272void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl3945_tx_queue *txq)
Zhu Yib481de92007-09-25 17:54:57 -0700273{
Samuel Ortizd20b3c62008-12-19 10:37:15 +0800274 struct iwl_queue *q = &txq->q;
Zhu Yib481de92007-09-25 17:54:57 -0700275 struct pci_dev *dev = priv->pci_dev;
276 int len;
277
278 if (q->n_bd == 0)
279 return;
280
281 /* first, empty all BD's */
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800282 for (; q->write_ptr != q->read_ptr;
Tomas Winklerc54b6792008-03-06 17:36:53 -0800283 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800284 iwl3945_hw_txq_free_tfd(priv, txq);
Zhu Yib481de92007-09-25 17:54:57 -0700285
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800286 len = sizeof(struct iwl3945_cmd) * q->n_window;
Zhu Yib481de92007-09-25 17:54:57 -0700287 if (q->id == IWL_CMD_QUEUE_NUM)
288 len += IWL_MAX_SCAN_SIZE;
289
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800290 /* De-alloc array of command/tx buffers */
Zhu Yib481de92007-09-25 17:54:57 -0700291 pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
292
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800293 /* De-alloc circular buffer of TFDs */
Zhu Yib481de92007-09-25 17:54:57 -0700294 if (txq->q.n_bd)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800295 pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) *
Zhu Yib481de92007-09-25 17:54:57 -0700296 txq->q.n_bd, txq->bd, txq->q.dma_addr);
297
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800298 /* De-alloc array of per-TFD driver data */
Tomas Winkler3ac7f142008-07-21 02:40:14 +0300299 kfree(txq->txb);
300 txq->txb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700301
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800302 /* 0-fill queue descriptor structure */
Zhu Yib481de92007-09-25 17:54:57 -0700303 memset(txq, 0, sizeof(*txq));
304}
305
Zhu Yib481de92007-09-25 17:54:57 -0700306/*************** STATION TABLE MANAGEMENT ****
Ben Cahill9fbab512007-11-29 11:09:47 +0800307 * mac80211 should be examined to determine if sta_info is duplicating
Zhu Yib481de92007-09-25 17:54:57 -0700308 * the functionality provided here
309 */
310
311/**************************************************************/
Ian Schram01ebd062007-10-25 17:15:22 +0800312#if 0 /* temporary disable till we add real remove station */
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800313/**
314 * iwl3945_remove_station - Remove driver's knowledge of station.
315 *
316 * NOTE: This does not remove station from device's station table.
317 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800318static u8 iwl3945_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
Zhu Yib481de92007-09-25 17:54:57 -0700319{
320 int index = IWL_INVALID_STATION;
321 int i;
322 unsigned long flags;
323
324 spin_lock_irqsave(&priv->sta_lock, flags);
325
326 if (is_ap)
327 index = IWL_AP_ID;
328 else if (is_broadcast_ether_addr(addr))
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +0800329 index = priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -0700330 else
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +0800331 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800332 if (priv->stations_39[i].used &&
333 !compare_ether_addr(priv->stations_39[i].sta.sta.addr,
Zhu Yib481de92007-09-25 17:54:57 -0700334 addr)) {
335 index = i;
336 break;
337 }
338
339 if (unlikely(index == IWL_INVALID_STATION))
340 goto out;
341
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800342 if (priv->stations_39[index].used) {
343 priv->stations_39[index].used = 0;
Zhu Yib481de92007-09-25 17:54:57 -0700344 priv->num_stations--;
345 }
346
347 BUG_ON(priv->num_stations < 0);
348
349out:
350 spin_unlock_irqrestore(&priv->sta_lock, flags);
351 return 0;
352}
Zhu Yi556f8db2007-09-27 11:27:33 +0800353#endif
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800354
355/**
356 * iwl3945_clear_stations_table - Clear the driver's station table
357 *
358 * NOTE: This does not clear or otherwise alter the device's station table.
359 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800360static void iwl3945_clear_stations_table(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700361{
362 unsigned long flags;
363
364 spin_lock_irqsave(&priv->sta_lock, flags);
365
366 priv->num_stations = 0;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800367 memset(priv->stations_39, 0, sizeof(priv->stations_39));
Zhu Yib481de92007-09-25 17:54:57 -0700368
369 spin_unlock_irqrestore(&priv->sta_lock, flags);
370}
371
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800372/**
373 * iwl3945_add_station - Add station to station tables in driver and device
374 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800375u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
Zhu Yib481de92007-09-25 17:54:57 -0700376{
377 int i;
378 int index = IWL_INVALID_STATION;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800379 struct iwl3945_station_entry *station;
Zhu Yib481de92007-09-25 17:54:57 -0700380 unsigned long flags_spin;
Zhu Yic14c5212007-09-27 11:27:35 +0800381 u8 rate;
Zhu Yib481de92007-09-25 17:54:57 -0700382
383 spin_lock_irqsave(&priv->sta_lock, flags_spin);
384 if (is_ap)
385 index = IWL_AP_ID;
386 else if (is_broadcast_ether_addr(addr))
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +0800387 index = priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -0700388 else
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +0800389 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800390 if (!compare_ether_addr(priv->stations_39[i].sta.sta.addr,
Zhu Yib481de92007-09-25 17:54:57 -0700391 addr)) {
392 index = i;
393 break;
394 }
395
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800396 if (!priv->stations_39[i].used &&
Zhu Yib481de92007-09-25 17:54:57 -0700397 index == IWL_INVALID_STATION)
398 index = i;
399 }
400
Ian Schram01ebd062007-10-25 17:15:22 +0800401 /* These two conditions has the same outcome but keep them separate
Zhu Yib481de92007-09-25 17:54:57 -0700402 since they have different meaning */
403 if (unlikely(index == IWL_INVALID_STATION)) {
404 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
405 return index;
406 }
407
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800408 if (priv->stations_39[index].used &&
409 !compare_ether_addr(priv->stations_39[index].sta.sta.addr, addr)) {
Zhu Yib481de92007-09-25 17:54:57 -0700410 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
411 return index;
412 }
413
Johannes Berge1749612008-10-27 15:59:26 -0700414 IWL_DEBUG_ASSOC("Add STA ID %d: %pM\n", index, addr);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800415 station = &priv->stations_39[index];
Zhu Yib481de92007-09-25 17:54:57 -0700416 station->used = 1;
417 priv->num_stations++;
418
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800419 /* Set up the REPLY_ADD_STA command to send to device */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800420 memset(&station->sta, 0, sizeof(struct iwl3945_addsta_cmd));
Zhu Yib481de92007-09-25 17:54:57 -0700421 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
422 station->sta.mode = 0;
423 station->sta.sta.sta_id = index;
424 station->sta.station_flags = 0;
425
Johannes Berg8318d782008-01-24 19:38:38 +0100426 if (priv->band == IEEE80211_BAND_5GHZ)
Tomas Winkler69946332007-10-25 17:15:27 +0800427 rate = IWL_RATE_6M_PLCP;
428 else
429 rate = IWL_RATE_1M_PLCP;
Zhu Yic14c5212007-09-27 11:27:35 +0800430
431 /* Turn on both antennas for the station... */
432 station->sta.rate_n_flags =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800433 iwl3945_hw_set_rate_n_flags(rate, RATE_MCS_ANT_AB_MSK);
Zhu Yic14c5212007-09-27 11:27:35 +0800434
Zhu Yib481de92007-09-25 17:54:57 -0700435 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800436
437 /* Add station to device's station table */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800438 iwl3945_send_add_station(priv, &station->sta, flags);
Zhu Yib481de92007-09-25 17:54:57 -0700439 return index;
440
441}
442
443/*************** DRIVER STATUS FUNCTIONS *****/
444
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800445static inline int iwl3945_is_ready(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700446{
447 /* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
448 * set but EXIT_PENDING is not */
449 return test_bit(STATUS_READY, &priv->status) &&
450 test_bit(STATUS_GEO_CONFIGURED, &priv->status) &&
451 !test_bit(STATUS_EXIT_PENDING, &priv->status);
452}
453
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800454static inline int iwl3945_is_alive(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700455{
456 return test_bit(STATUS_ALIVE, &priv->status);
457}
458
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800459static inline int iwl3945_is_init(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700460{
461 return test_bit(STATUS_INIT, &priv->status);
462}
463
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800464static inline int iwl3945_is_rfkill_sw(struct iwl_priv *priv)
Adel Gadllah80fcc9e2008-07-01 17:49:50 +0200465{
466 return test_bit(STATUS_RF_KILL_SW, &priv->status);
467}
468
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800469static inline int iwl3945_is_rfkill_hw(struct iwl_priv *priv)
Adel Gadllah80fcc9e2008-07-01 17:49:50 +0200470{
471 return test_bit(STATUS_RF_KILL_HW, &priv->status);
472}
473
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800474static inline int iwl3945_is_rfkill(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700475{
Adel Gadllah80fcc9e2008-07-01 17:49:50 +0200476 return iwl3945_is_rfkill_hw(priv) ||
477 iwl3945_is_rfkill_sw(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700478}
479
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800480static inline int iwl3945_is_ready_rf(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700481{
482
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800483 if (iwl3945_is_rfkill(priv))
Zhu Yib481de92007-09-25 17:54:57 -0700484 return 0;
485
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800486 return iwl3945_is_ready(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700487}
488
489/*************** HOST COMMAND QUEUE FUNCTIONS *****/
490
Abhijeet Kolekarc3056062008-11-12 13:14:08 -0800491#define IWL_CMD(x) case x: return #x
Zhu Yib481de92007-09-25 17:54:57 -0700492#define HOST_COMPLETE_TIMEOUT (HZ / 2)
493
494/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800495 * iwl3945_enqueue_hcmd - enqueue a uCode command
Zhu Yib481de92007-09-25 17:54:57 -0700496 * @priv: device private data point
497 * @cmd: a point to the ucode command structure
498 *
499 * The function returns < 0 values to indicate the operation is
500 * failed. On success, it turns the index (> 0) of command in the
501 * command queue.
502 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800503static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
Zhu Yib481de92007-09-25 17:54:57 -0700504{
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800505 struct iwl3945_tx_queue *txq = &priv->txq39[IWL_CMD_QUEUE_NUM];
Samuel Ortizd20b3c62008-12-19 10:37:15 +0800506 struct iwl_queue *q = &txq->q;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800507 struct iwl3945_tfd_frame *tfd;
Zhu Yib481de92007-09-25 17:54:57 -0700508 u32 *control_flags;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800509 struct iwl3945_cmd *out_cmd;
Zhu Yib481de92007-09-25 17:54:57 -0700510 u32 idx;
511 u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr));
512 dma_addr_t phys_addr;
513 int pad;
514 u16 count;
515 int ret;
516 unsigned long flags;
517
518 /* If any of the command structures end up being larger than
519 * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
520 * we will need to increase the size of the TFD entries */
Samuel Ortizd20b3c62008-12-19 10:37:15 +0800521 BUG_ON((fix_size > TFD39_MAX_PAYLOAD_SIZE) &&
Zhu Yib481de92007-09-25 17:54:57 -0700522 !(cmd->meta.flags & CMD_SIZE_HUGE));
523
Gregory Greenmanc342a1b2008-02-06 11:20:40 -0800524
525 if (iwl3945_is_rfkill(priv)) {
526 IWL_DEBUG_INFO("Not sending command - RF KILL");
527 return -EIO;
528 }
529
Samuel Ortizd20b3c62008-12-19 10:37:15 +0800530 if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
Zhu Yib481de92007-09-25 17:54:57 -0700531 IWL_ERROR("No space for Tx\n");
532 return -ENOSPC;
533 }
534
535 spin_lock_irqsave(&priv->hcmd_lock, flags);
536
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800537 tfd = &txq->bd[q->write_ptr];
Zhu Yib481de92007-09-25 17:54:57 -0700538 memset(tfd, 0, sizeof(*tfd));
539
540 control_flags = (u32 *) tfd;
541
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800542 idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
Zhu Yib481de92007-09-25 17:54:57 -0700543 out_cmd = &txq->cmd[idx];
544
545 out_cmd->hdr.cmd = cmd->id;
546 memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
547 memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
548
549 /* At this point, the out_cmd now has all of the incoming cmd
550 * information */
551
552 out_cmd->hdr.flags = 0;
553 out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800554 INDEX_TO_SEQ(q->write_ptr));
Zhu Yib481de92007-09-25 17:54:57 -0700555 if (out_cmd->meta.flags & CMD_SIZE_HUGE)
Tomas Winkler600c0e12008-12-19 10:37:04 +0800556 out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
Zhu Yib481de92007-09-25 17:54:57 -0700557
558 phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx +
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800559 offsetof(struct iwl3945_cmd, hdr);
560 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
Zhu Yib481de92007-09-25 17:54:57 -0700561
562 pad = U32_PAD(cmd->len);
563 count = TFD_CTL_COUNT_GET(*control_flags);
564 *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad);
565
566 IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
567 "%d bytes at %d[%d]:%d\n",
568 get_cmd_string(out_cmd->hdr.cmd),
569 out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
Tomas Winklerfc4b6852007-10-25 17:15:24 +0800570 fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
Zhu Yib481de92007-09-25 17:54:57 -0700571
572 txq->need_update = 1;
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800573
574 /* Increment and update queue's write index */
Tomas Winklerc54b6792008-03-06 17:36:53 -0800575 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800576 ret = iwl3945_tx_queue_update_write_ptr(priv, txq);
Zhu Yib481de92007-09-25 17:54:57 -0700577
578 spin_unlock_irqrestore(&priv->hcmd_lock, flags);
579 return ret ? ret : idx;
580}
581
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800582static int iwl3945_send_cmd_async(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
Zhu Yib481de92007-09-25 17:54:57 -0700583{
584 int ret;
585
586 BUG_ON(!(cmd->meta.flags & CMD_ASYNC));
587
588 /* An asynchronous command can not expect an SKB to be set. */
589 BUG_ON(cmd->meta.flags & CMD_WANT_SKB);
590
591 /* An asynchronous command MUST have a callback. */
592 BUG_ON(!cmd->meta.u.callback);
593
594 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
595 return -EBUSY;
596
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800597 ret = iwl3945_enqueue_hcmd(priv, cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700598 if (ret < 0) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800599 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Zhu Yib481de92007-09-25 17:54:57 -0700600 get_cmd_string(cmd->id), ret);
601 return ret;
602 }
603 return 0;
604}
605
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800606static int iwl3945_send_cmd_sync(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
Zhu Yib481de92007-09-25 17:54:57 -0700607{
608 int cmd_idx;
609 int ret;
Zhu Yib481de92007-09-25 17:54:57 -0700610
611 BUG_ON(cmd->meta.flags & CMD_ASYNC);
612
613 /* A synchronous command can not have a callback set. */
614 BUG_ON(cmd->meta.u.callback != NULL);
615
Tomas Winklere5472972008-03-28 16:21:12 -0700616 if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
Zhu Yib481de92007-09-25 17:54:57 -0700617 IWL_ERROR("Error sending %s: Already sending a host command\n",
618 get_cmd_string(cmd->id));
Tomas Winklere5472972008-03-28 16:21:12 -0700619 ret = -EBUSY;
620 goto out;
Zhu Yib481de92007-09-25 17:54:57 -0700621 }
622
623 set_bit(STATUS_HCMD_ACTIVE, &priv->status);
624
625 if (cmd->meta.flags & CMD_WANT_SKB)
626 cmd->meta.source = &cmd->meta;
627
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800628 cmd_idx = iwl3945_enqueue_hcmd(priv, cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700629 if (cmd_idx < 0) {
630 ret = cmd_idx;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800631 IWL_ERROR("Error sending %s: iwl3945_enqueue_hcmd failed: %d\n",
Zhu Yib481de92007-09-25 17:54:57 -0700632 get_cmd_string(cmd->id), ret);
633 goto out;
634 }
635
636 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
637 !test_bit(STATUS_HCMD_ACTIVE, &priv->status),
638 HOST_COMPLETE_TIMEOUT);
639 if (!ret) {
640 if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
641 IWL_ERROR("Error sending %s: time out after %dms.\n",
642 get_cmd_string(cmd->id),
643 jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
644
645 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
646 ret = -ETIMEDOUT;
647 goto cancel;
648 }
649 }
650
651 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
652 IWL_DEBUG_INFO("Command %s aborted: RF KILL Switch\n",
653 get_cmd_string(cmd->id));
654 ret = -ECANCELED;
655 goto fail;
656 }
657 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
658 IWL_DEBUG_INFO("Command %s failed: FW Error\n",
659 get_cmd_string(cmd->id));
660 ret = -EIO;
661 goto fail;
662 }
663 if ((cmd->meta.flags & CMD_WANT_SKB) && !cmd->meta.u.skb) {
664 IWL_ERROR("Error: Response NULL in '%s'\n",
665 get_cmd_string(cmd->id));
666 ret = -EIO;
Zhu Yi73e1a652009-01-08 10:19:58 -0800667 goto cancel;
Zhu Yib481de92007-09-25 17:54:57 -0700668 }
669
670 ret = 0;
671 goto out;
672
673cancel:
674 if (cmd->meta.flags & CMD_WANT_SKB) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800675 struct iwl3945_cmd *qcmd;
Zhu Yib481de92007-09-25 17:54:57 -0700676
677 /* Cancel the CMD_WANT_SKB flag for the cmd in the
678 * TX cmd queue. Otherwise in case the cmd comes
679 * in later, it will possibly set an invalid
680 * address (cmd->meta.source). */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800681 qcmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_idx];
Zhu Yib481de92007-09-25 17:54:57 -0700682 qcmd->meta.flags &= ~CMD_WANT_SKB;
683 }
684fail:
685 if (cmd->meta.u.skb) {
686 dev_kfree_skb_any(cmd->meta.u.skb);
687 cmd->meta.u.skb = NULL;
688 }
689out:
Tomas Winklere5472972008-03-28 16:21:12 -0700690 clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700691 return ret;
692}
693
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800694int iwl3945_send_cmd(struct iwl_priv *priv, struct iwl3945_host_cmd *cmd)
Zhu Yib481de92007-09-25 17:54:57 -0700695{
Zhu Yib481de92007-09-25 17:54:57 -0700696 if (cmd->meta.flags & CMD_ASYNC)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800697 return iwl3945_send_cmd_async(priv, cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700698
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800699 return iwl3945_send_cmd_sync(priv, cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700700}
701
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800702int iwl3945_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
Zhu Yib481de92007-09-25 17:54:57 -0700703{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800704 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -0700705 .id = id,
706 .len = len,
707 .data = data,
708 };
709
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800710 return iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700711}
712
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800713static int __must_check iwl3945_send_cmd_u32(struct iwl_priv *priv, u8 id, u32 val)
Zhu Yib481de92007-09-25 17:54:57 -0700714{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800715 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -0700716 .id = id,
717 .len = sizeof(val),
718 .data = &val,
719 };
720
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800721 return iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700722}
723
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800724int iwl3945_send_statistics_request(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700725{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800726 return iwl3945_send_cmd_u32(priv, REPLY_STATISTICS_CMD, 0);
Zhu Yib481de92007-09-25 17:54:57 -0700727}
728
729/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800730 * iwl3945_set_rxon_channel - Set the phymode and channel values in staging RXON
Johannes Berg8318d782008-01-24 19:38:38 +0100731 * @band: 2.4 or 5 GHz band
732 * @channel: Any channel valid for the requested band
Zhu Yib481de92007-09-25 17:54:57 -0700733
Johannes Berg8318d782008-01-24 19:38:38 +0100734 * In addition to setting the staging RXON, priv->band is also set.
Zhu Yib481de92007-09-25 17:54:57 -0700735 *
736 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
Johannes Berg8318d782008-01-24 19:38:38 +0100737 * in the staging RXON flag structure based on the band
Zhu Yib481de92007-09-25 17:54:57 -0700738 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800739static int iwl3945_set_rxon_channel(struct iwl_priv *priv,
Johannes Berg8318d782008-01-24 19:38:38 +0100740 enum ieee80211_band band,
741 u16 channel)
Zhu Yib481de92007-09-25 17:54:57 -0700742{
Johannes Berg8318d782008-01-24 19:38:38 +0100743 if (!iwl3945_get_channel_info(priv, band, channel)) {
Zhu Yib481de92007-09-25 17:54:57 -0700744 IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
Johannes Berg8318d782008-01-24 19:38:38 +0100745 channel, band);
Zhu Yib481de92007-09-25 17:54:57 -0700746 return -EINVAL;
747 }
748
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800749 if ((le16_to_cpu(priv->staging39_rxon.channel) == channel) &&
Johannes Berg8318d782008-01-24 19:38:38 +0100750 (priv->band == band))
Zhu Yib481de92007-09-25 17:54:57 -0700751 return 0;
752
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800753 priv->staging39_rxon.channel = cpu_to_le16(channel);
Johannes Berg8318d782008-01-24 19:38:38 +0100754 if (band == IEEE80211_BAND_5GHZ)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800755 priv->staging39_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
Zhu Yib481de92007-09-25 17:54:57 -0700756 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800757 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
Zhu Yib481de92007-09-25 17:54:57 -0700758
Johannes Berg8318d782008-01-24 19:38:38 +0100759 priv->band = band;
Zhu Yib481de92007-09-25 17:54:57 -0700760
Johannes Berg8318d782008-01-24 19:38:38 +0100761 IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
Zhu Yib481de92007-09-25 17:54:57 -0700762
763 return 0;
764}
765
766/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800767 * iwl3945_check_rxon_cmd - validate RXON structure is valid
Zhu Yib481de92007-09-25 17:54:57 -0700768 *
769 * NOTE: This is really only useful during development and can eventually
770 * be #ifdef'd out once the driver is stable and folks aren't actively
771 * making changes
772 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800773static int iwl3945_check_rxon_cmd(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700774{
775 int error = 0;
776 int counter = 1;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800777 struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
Zhu Yib481de92007-09-25 17:54:57 -0700778
779 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
780 error |= le32_to_cpu(rxon->flags &
781 (RXON_FLG_TGJ_NARROW_BAND_MSK |
782 RXON_FLG_RADAR_DETECT_MSK));
783 if (error)
784 IWL_WARNING("check 24G fields %d | %d\n",
785 counter++, error);
786 } else {
787 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
788 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
789 if (error)
790 IWL_WARNING("check 52 fields %d | %d\n",
791 counter++, error);
792 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
793 if (error)
794 IWL_WARNING("check 52 CCK %d | %d\n",
795 counter++, error);
796 }
797 error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
798 if (error)
799 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
800
801 /* make sure basic rates 6Mbps and 1Mbps are supported */
802 error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
803 ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
804 if (error)
805 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
806
807 error |= (le16_to_cpu(rxon->assoc_id) > 2007);
808 if (error)
809 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
810
811 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
812 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
813 if (error)
814 IWL_WARNING("check CCK and short slot %d | %d\n",
815 counter++, error);
816
817 error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
818 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
819 if (error)
820 IWL_WARNING("check CCK & auto detect %d | %d\n",
821 counter++, error);
822
823 error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
824 RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
825 if (error)
826 IWL_WARNING("check TGG and auto detect %d | %d\n",
827 counter++, error);
828
829 if ((rxon->flags & RXON_FLG_DIS_DIV_MSK))
830 error |= ((rxon->flags & (RXON_FLG_ANT_B_MSK |
831 RXON_FLG_ANT_A_MSK)) == 0);
832 if (error)
833 IWL_WARNING("check antenna %d %d\n", counter++, error);
834
835 if (error)
836 IWL_WARNING("Tuning to channel %d\n",
837 le16_to_cpu(rxon->channel));
838
839 if (error) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800840 IWL_ERROR("Not a valid iwl3945_rxon_assoc_cmd field values\n");
Zhu Yib481de92007-09-25 17:54:57 -0700841 return -1;
842 }
843 return 0;
844}
845
846/**
Ben Cahill9fbab512007-11-29 11:09:47 +0800847 * iwl3945_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
Ian Schram01ebd062007-10-25 17:15:22 +0800848 * @priv: staging_rxon is compared to active_rxon
Zhu Yib481de92007-09-25 17:54:57 -0700849 *
Ben Cahill9fbab512007-11-29 11:09:47 +0800850 * If the RXON structure is changing enough to require a new tune,
851 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
852 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
Zhu Yib481de92007-09-25 17:54:57 -0700853 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800854static int iwl3945_full_rxon_required(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700855{
856
857 /* These items are only settable from the full RXON command */
Ron Rindjunsky5d1e2322008-06-30 17:23:04 +0800858 if (!(iwl3945_is_associated(priv)) ||
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800859 compare_ether_addr(priv->staging39_rxon.bssid_addr,
860 priv->active39_rxon.bssid_addr) ||
861 compare_ether_addr(priv->staging39_rxon.node_addr,
862 priv->active39_rxon.node_addr) ||
863 compare_ether_addr(priv->staging39_rxon.wlap_bssid_addr,
864 priv->active39_rxon.wlap_bssid_addr) ||
865 (priv->staging39_rxon.dev_type != priv->active39_rxon.dev_type) ||
866 (priv->staging39_rxon.channel != priv->active39_rxon.channel) ||
867 (priv->staging39_rxon.air_propagation !=
868 priv->active39_rxon.air_propagation) ||
869 (priv->staging39_rxon.assoc_id != priv->active39_rxon.assoc_id))
Zhu Yib481de92007-09-25 17:54:57 -0700870 return 1;
871
872 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
873 * be updated with the RXON_ASSOC command -- however only some
874 * flag transitions are allowed using RXON_ASSOC */
875
876 /* Check if we are not switching bands */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800877 if ((priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
878 (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK))
Zhu Yib481de92007-09-25 17:54:57 -0700879 return 1;
880
881 /* Check if we are switching association toggle */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800882 if ((priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
883 (priv->active39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
Zhu Yib481de92007-09-25 17:54:57 -0700884 return 1;
885
886 return 0;
887}
888
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800889static int iwl3945_send_rxon_assoc(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700890{
891 int rc = 0;
Tomas Winkler3d24a9f2008-12-19 10:37:07 +0800892 struct iwl_rx_packet *res = NULL;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800893 struct iwl3945_rxon_assoc_cmd rxon_assoc;
894 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -0700895 .id = REPLY_RXON_ASSOC,
896 .len = sizeof(rxon_assoc),
897 .meta.flags = CMD_WANT_SKB,
898 .data = &rxon_assoc,
899 };
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800900 const struct iwl3945_rxon_cmd *rxon1 = &priv->staging39_rxon;
901 const struct iwl3945_rxon_cmd *rxon2 = &priv->active39_rxon;
Zhu Yib481de92007-09-25 17:54:57 -0700902
903 if ((rxon1->flags == rxon2->flags) &&
904 (rxon1->filter_flags == rxon2->filter_flags) &&
905 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
906 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
907 IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n");
908 return 0;
909 }
910
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800911 rxon_assoc.flags = priv->staging39_rxon.flags;
912 rxon_assoc.filter_flags = priv->staging39_rxon.filter_flags;
913 rxon_assoc.ofdm_basic_rates = priv->staging39_rxon.ofdm_basic_rates;
914 rxon_assoc.cck_basic_rates = priv->staging39_rxon.cck_basic_rates;
Zhu Yib481de92007-09-25 17:54:57 -0700915 rxon_assoc.reserved = 0;
916
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800917 rc = iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -0700918 if (rc)
919 return rc;
920
Tomas Winkler3d24a9f2008-12-19 10:37:07 +0800921 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Zhu Yib481de92007-09-25 17:54:57 -0700922 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
923 IWL_ERROR("Bad return from REPLY_RXON_ASSOC command\n");
924 rc = -EIO;
925 }
926
927 priv->alloc_rxb_skb--;
928 dev_kfree_skb_any(cmd.meta.u.skb);
929
930 return rc;
931}
932
933/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800934 * iwl3945_commit_rxon - commit staging_rxon to hardware
Zhu Yib481de92007-09-25 17:54:57 -0700935 *
Ian Schram01ebd062007-10-25 17:15:22 +0800936 * The RXON command in staging_rxon is committed to the hardware and
Zhu Yib481de92007-09-25 17:54:57 -0700937 * the active_rxon structure is updated with the new data. This
938 * function correctly transitions out of the RXON_ASSOC_MSK state if
939 * a HW tune is required based on the RXON structure changes.
940 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +0800941static int iwl3945_commit_rxon(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700942{
943 /* cast away the const for active_rxon in this function */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800944 struct iwl3945_rxon_cmd *active_rxon = (void *)&priv->active39_rxon;
Zhu Yib481de92007-09-25 17:54:57 -0700945 int rc = 0;
946
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800947 if (!iwl3945_is_alive(priv))
Zhu Yib481de92007-09-25 17:54:57 -0700948 return -1;
949
950 /* always get timestamp with Rx frame */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800951 priv->staging39_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
Zhu Yib481de92007-09-25 17:54:57 -0700952
953 /* select antenna */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800954 priv->staging39_rxon.flags &=
Zhu Yib481de92007-09-25 17:54:57 -0700955 ~(RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_SEL_MSK);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800956 priv->staging39_rxon.flags |= iwl3945_get_antenna_flags(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700957
Samuel Ortiza3139c52008-12-19 10:37:09 +0800958 rc = iwl3945_check_rxon_cmd(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700959 if (rc) {
960 IWL_ERROR("Invalid RXON configuration. Not committing.\n");
961 return -EINVAL;
962 }
963
964 /* If we don't need to send a full RXON, we can use
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800965 * iwl3945_rxon_assoc_cmd which is used to reconfigure filter
Zhu Yib481de92007-09-25 17:54:57 -0700966 * and other flags for the current radio configuration. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800967 if (!iwl3945_full_rxon_required(priv)) {
968 rc = iwl3945_send_rxon_assoc(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700969 if (rc) {
970 IWL_ERROR("Error setting RXON_ASSOC "
971 "configuration (%d).\n", rc);
972 return rc;
973 }
974
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800975 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
Zhu Yib481de92007-09-25 17:54:57 -0700976
977 return 0;
978 }
979
980 /* If we are currently associated and the new config requires
981 * an RXON_ASSOC and the new config wants the associated mask enabled,
982 * we must clear the associated from the active configuration
983 * before we apply the new config */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800984 if (iwl3945_is_associated(priv) &&
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800985 (priv->staging39_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
Zhu Yib481de92007-09-25 17:54:57 -0700986 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
987 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
988
Christoph Hellwigbb8c0932008-01-27 16:41:47 -0800989 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
990 sizeof(struct iwl3945_rxon_cmd),
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +0800991 &priv->active39_rxon);
Zhu Yib481de92007-09-25 17:54:57 -0700992
993 /* If the mask clearing failed then we set
994 * active_rxon back to what it was previously */
995 if (rc) {
996 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
997 IWL_ERROR("Error clearing ASSOC_MSK on current "
998 "configuration (%d).\n", rc);
999 return rc;
1000 }
Zhu Yib481de92007-09-25 17:54:57 -07001001 }
1002
1003 IWL_DEBUG_INFO("Sending RXON\n"
1004 "* with%s RXON_FILTER_ASSOC_MSK\n"
1005 "* channel = %d\n"
Johannes Berge1749612008-10-27 15:59:26 -07001006 "* bssid = %pM\n",
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001007 ((priv->staging39_rxon.filter_flags &
Zhu Yib481de92007-09-25 17:54:57 -07001008 RXON_FILTER_ASSOC_MSK) ? "" : "out"),
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001009 le16_to_cpu(priv->staging39_rxon.channel),
Johannes Berge1749612008-10-27 15:59:26 -07001010 priv->staging_rxon.bssid_addr);
Zhu Yib481de92007-09-25 17:54:57 -07001011
1012 /* Apply the new configuration */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001013 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON,
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001014 sizeof(struct iwl3945_rxon_cmd), &priv->staging39_rxon);
Zhu Yib481de92007-09-25 17:54:57 -07001015 if (rc) {
1016 IWL_ERROR("Error setting new configuration (%d).\n", rc);
1017 return rc;
1018 }
1019
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001020 memcpy(active_rxon, &priv->staging39_rxon, sizeof(*active_rxon));
Zhu Yib481de92007-09-25 17:54:57 -07001021
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001022 iwl3945_clear_stations_table(priv);
Zhu Yi556f8db2007-09-27 11:27:33 +08001023
Zhu Yib481de92007-09-25 17:54:57 -07001024 /* If we issue a new RXON command which required a tune then we must
1025 * send a new TXPOWER command or we won't be able to Tx any frames */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001026 rc = iwl3945_hw_reg_send_txpower(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001027 if (rc) {
1028 IWL_ERROR("Error setting Tx power (%d).\n", rc);
1029 return rc;
1030 }
1031
1032 /* Add the broadcast address so we can send broadcast frames */
Kolekar, Abhijeetb5323d32008-12-19 10:37:22 +08001033 if (iwl3945_add_station(priv, iwl_bcast_addr, 0, 0) ==
Zhu Yib481de92007-09-25 17:54:57 -07001034 IWL_INVALID_STATION) {
1035 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
1036 return -EIO;
1037 }
1038
1039 /* If we have set the ASSOC_MSK and we are in BSS mode then
1040 * add the IWL_AP_ID to the station rate table */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001041 if (iwl3945_is_associated(priv) &&
Johannes Berg05c914f2008-09-11 00:01:58 +02001042 (priv->iw_mode == NL80211_IFTYPE_STATION))
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001043 if (iwl3945_add_station(priv, priv->active39_rxon.bssid_addr, 1, 0)
Zhu Yib481de92007-09-25 17:54:57 -07001044 == IWL_INVALID_STATION) {
1045 IWL_ERROR("Error adding AP address for transmit.\n");
1046 return -EIO;
1047 }
1048
Johannes Berg8318d782008-01-24 19:38:38 +01001049 /* Init the hardware's rate fallback order based on the band */
Zhu Yib481de92007-09-25 17:54:57 -07001050 rc = iwl3945_init_hw_rate_table(priv);
1051 if (rc) {
1052 IWL_ERROR("Error setting HW rate table: %02X\n", rc);
1053 return -EIO;
1054 }
1055
1056 return 0;
1057}
1058
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001059static int iwl3945_send_bt_config(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001060{
Tomas Winkler4c897252008-12-19 10:37:05 +08001061 struct iwl_bt_cmd bt_cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07001062 .flags = 3,
1063 .lead_time = 0xAA,
1064 .max_kill = 1,
1065 .kill_ack_mask = 0,
1066 .kill_cts_mask = 0,
1067 };
1068
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001069 return iwl3945_send_cmd_pdu(priv, REPLY_BT_CONFIG,
Tomas Winkler4c897252008-12-19 10:37:05 +08001070 sizeof(bt_cmd), &bt_cmd);
Zhu Yib481de92007-09-25 17:54:57 -07001071}
1072
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001073static int iwl3945_send_scan_abort(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001074{
1075 int rc = 0;
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001076 struct iwl_rx_packet *res;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001077 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07001078 .id = REPLY_SCAN_ABORT_CMD,
1079 .meta.flags = CMD_WANT_SKB,
1080 };
1081
1082 /* If there isn't a scan actively going on in the hardware
1083 * then we are in between scan bands and not actually
1084 * actively scanning, so don't send the abort command */
1085 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1086 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1087 return 0;
1088 }
1089
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001090 rc = iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07001091 if (rc) {
1092 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1093 return rc;
1094 }
1095
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001096 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07001097 if (res->u.status != CAN_ABORT_STATUS) {
1098 /* The scan abort will return 1 for success or
1099 * 2 for "failure". A failure condition can be
1100 * due to simply not being in an active scan which
1101 * can occur if we send the scan abort before we
1102 * the microcode has notified us that a scan is
1103 * completed. */
1104 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
1105 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
1106 clear_bit(STATUS_SCAN_HW, &priv->status);
1107 }
1108
1109 dev_kfree_skb_any(cmd.meta.u.skb);
1110
1111 return rc;
1112}
1113
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001114static int iwl3945_card_state_sync_callback(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001115 struct iwl3945_cmd *cmd,
Zhu Yib481de92007-09-25 17:54:57 -07001116 struct sk_buff *skb)
1117{
1118 return 1;
1119}
1120
1121/*
1122 * CARD_STATE_CMD
1123 *
Ben Cahill9fbab512007-11-29 11:09:47 +08001124 * Use: Sets the device's internal card state to enable, disable, or halt
Zhu Yib481de92007-09-25 17:54:57 -07001125 *
1126 * When in the 'enable' state the card operates as normal.
1127 * When in the 'disable' state, the card enters into a low power mode.
1128 * When in the 'halt' state, the card is shut down and must be fully
1129 * restarted to come back on.
1130 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001131static int iwl3945_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
Zhu Yib481de92007-09-25 17:54:57 -07001132{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001133 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07001134 .id = REPLY_CARD_STATE_CMD,
1135 .len = sizeof(u32),
1136 .data = &flags,
1137 .meta.flags = meta_flag,
1138 };
1139
1140 if (meta_flag & CMD_ASYNC)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001141 cmd.meta.u.callback = iwl3945_card_state_sync_callback;
Zhu Yib481de92007-09-25 17:54:57 -07001142
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001143 return iwl3945_send_cmd(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07001144}
1145
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001146static int iwl3945_add_sta_sync_callback(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001147 struct iwl3945_cmd *cmd, struct sk_buff *skb)
Zhu Yib481de92007-09-25 17:54:57 -07001148{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001149 struct iwl_rx_packet *res = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07001150
1151 if (!skb) {
1152 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
1153 return 1;
1154 }
1155
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001156 res = (struct iwl_rx_packet *)skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07001157 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1158 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1159 res->hdr.flags);
1160 return 1;
1161 }
1162
1163 switch (res->u.add_sta.status) {
1164 case ADD_STA_SUCCESS_MSK:
1165 break;
1166 default:
1167 break;
1168 }
1169
1170 /* We didn't cache the SKB; let the caller free it */
1171 return 1;
1172}
1173
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001174int iwl3945_send_add_station(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001175 struct iwl3945_addsta_cmd *sta, u8 flags)
Zhu Yib481de92007-09-25 17:54:57 -07001176{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001177 struct iwl_rx_packet *res = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07001178 int rc = 0;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001179 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07001180 .id = REPLY_ADD_STA,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001181 .len = sizeof(struct iwl3945_addsta_cmd),
Zhu Yib481de92007-09-25 17:54:57 -07001182 .meta.flags = flags,
1183 .data = sta,
1184 };
1185
1186 if (flags & CMD_ASYNC)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001187 cmd.meta.u.callback = iwl3945_add_sta_sync_callback;
Zhu Yib481de92007-09-25 17:54:57 -07001188 else
1189 cmd.meta.flags |= CMD_WANT_SKB;
1190
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001191 rc = iwl3945_send_cmd(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07001192
1193 if (rc || (flags & CMD_ASYNC))
1194 return rc;
1195
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08001196 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07001197 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1198 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
1199 res->hdr.flags);
1200 rc = -EIO;
1201 }
1202
1203 if (rc == 0) {
1204 switch (res->u.add_sta.status) {
1205 case ADD_STA_SUCCESS_MSK:
1206 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
1207 break;
1208 default:
1209 rc = -EIO;
1210 IWL_WARNING("REPLY_ADD_STA failed\n");
1211 break;
1212 }
1213 }
1214
1215 priv->alloc_rxb_skb--;
1216 dev_kfree_skb_any(cmd.meta.u.skb);
1217
1218 return rc;
1219}
1220
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001221static int iwl3945_update_sta_key_info(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07001222 struct ieee80211_key_conf *keyconf,
1223 u8 sta_id)
1224{
1225 unsigned long flags;
1226 __le16 key_flags = 0;
1227
1228 switch (keyconf->alg) {
1229 case ALG_CCMP:
1230 key_flags |= STA_KEY_FLG_CCMP;
1231 key_flags |= cpu_to_le16(
1232 keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1233 key_flags &= ~STA_KEY_FLG_INVALID;
1234 break;
1235 case ALG_TKIP:
1236 case ALG_WEP:
Zhu Yib481de92007-09-25 17:54:57 -07001237 default:
1238 return -EINVAL;
1239 }
1240 spin_lock_irqsave(&priv->sta_lock, flags);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001241 priv->stations_39[sta_id].keyinfo.alg = keyconf->alg;
1242 priv->stations_39[sta_id].keyinfo.keylen = keyconf->keylen;
1243 memcpy(priv->stations_39[sta_id].keyinfo.key, keyconf->key,
Zhu Yib481de92007-09-25 17:54:57 -07001244 keyconf->keylen);
1245
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001246 memcpy(priv->stations_39[sta_id].sta.key.key, keyconf->key,
Zhu Yib481de92007-09-25 17:54:57 -07001247 keyconf->keylen);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001248 priv->stations_39[sta_id].sta.key.key_flags = key_flags;
1249 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1250 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07001251
1252 spin_unlock_irqrestore(&priv->sta_lock, flags);
1253
1254 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001255 iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
Zhu Yib481de92007-09-25 17:54:57 -07001256 return 0;
1257}
1258
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001259static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
Zhu Yib481de92007-09-25 17:54:57 -07001260{
1261 unsigned long flags;
1262
1263 spin_lock_irqsave(&priv->sta_lock, flags);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001264 memset(&priv->stations_39[sta_id].keyinfo, 0, sizeof(struct iwl3945_hw_key));
1265 memset(&priv->stations_39[sta_id].sta.key, 0,
Tomas Winkler4c897252008-12-19 10:37:05 +08001266 sizeof(struct iwl4965_keyinfo));
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001267 priv->stations_39[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
1268 priv->stations_39[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1269 priv->stations_39[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07001270 spin_unlock_irqrestore(&priv->sta_lock, flags);
1271
1272 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001273 iwl3945_send_add_station(priv, &priv->stations_39[sta_id].sta, 0);
Zhu Yib481de92007-09-25 17:54:57 -07001274 return 0;
1275}
1276
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001277static void iwl3945_clear_free_frames(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001278{
1279 struct list_head *element;
1280
1281 IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
1282 priv->frames_count);
1283
1284 while (!list_empty(&priv->free_frames)) {
1285 element = priv->free_frames.next;
1286 list_del(element);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001287 kfree(list_entry(element, struct iwl3945_frame, list));
Zhu Yib481de92007-09-25 17:54:57 -07001288 priv->frames_count--;
1289 }
1290
1291 if (priv->frames_count) {
1292 IWL_WARNING("%d frames still in use. Did we lose one?\n",
1293 priv->frames_count);
1294 priv->frames_count = 0;
1295 }
1296}
1297
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001298static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001299{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001300 struct iwl3945_frame *frame;
Zhu Yib481de92007-09-25 17:54:57 -07001301 struct list_head *element;
1302 if (list_empty(&priv->free_frames)) {
1303 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
1304 if (!frame) {
1305 IWL_ERROR("Could not allocate frame!\n");
1306 return NULL;
1307 }
1308
1309 priv->frames_count++;
1310 return frame;
1311 }
1312
1313 element = priv->free_frames.next;
1314 list_del(element);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001315 return list_entry(element, struct iwl3945_frame, list);
Zhu Yib481de92007-09-25 17:54:57 -07001316}
1317
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001318static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
Zhu Yib481de92007-09-25 17:54:57 -07001319{
1320 memset(frame, 0, sizeof(*frame));
1321 list_add(&frame->list, &priv->free_frames);
1322}
1323
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001324unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07001325 struct ieee80211_hdr *hdr,
Rami Rosen73ec1cc2008-12-16 09:37:07 +02001326 int left)
Zhu Yib481de92007-09-25 17:54:57 -07001327{
1328
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001329 if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||
Johannes Berg05c914f2008-09-11 00:01:58 +02001330 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
1331 (priv->iw_mode != NL80211_IFTYPE_AP)))
Zhu Yib481de92007-09-25 17:54:57 -07001332 return 0;
1333
1334 if (priv->ibss_beacon->len > left)
1335 return 0;
1336
1337 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
1338
1339 return priv->ibss_beacon->len;
1340}
1341
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001342static u8 iwl3945_rate_get_lowest_plcp(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001343{
1344 u8 i;
Kolekar, Abhijeetc24f0812008-11-07 09:58:44 -08001345 int rate_mask;
1346
1347 /* Set rate mask*/
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001348 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
Chatre, Reinettedbce56a2008-11-12 13:14:07 -08001349 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
Kolekar, Abhijeetc24f0812008-11-07 09:58:44 -08001350 else
Chatre, Reinettedbce56a2008-11-12 13:14:07 -08001351 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
Zhu Yib481de92007-09-25 17:54:57 -07001352
1353 for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001354 i = iwl3945_rates[i].next_ieee) {
Zhu Yib481de92007-09-25 17:54:57 -07001355 if (rate_mask & (1 << i))
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001356 return iwl3945_rates[i].plcp;
Zhu Yib481de92007-09-25 17:54:57 -07001357 }
1358
Kolekar, Abhijeetc24f0812008-11-07 09:58:44 -08001359 /* No valid rate was found. Assign the lowest one */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001360 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK)
Kolekar, Abhijeetc24f0812008-11-07 09:58:44 -08001361 return IWL_RATE_1M_PLCP;
1362 else
1363 return IWL_RATE_6M_PLCP;
Zhu Yib481de92007-09-25 17:54:57 -07001364}
1365
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001366static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001367{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001368 struct iwl3945_frame *frame;
Zhu Yib481de92007-09-25 17:54:57 -07001369 unsigned int frame_size;
1370 int rc;
1371 u8 rate;
1372
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001373 frame = iwl3945_get_free_frame(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001374
1375 if (!frame) {
1376 IWL_ERROR("Could not obtain free frame buffer for beacon "
1377 "command.\n");
1378 return -ENOMEM;
1379 }
1380
Kolekar, Abhijeetc24f0812008-11-07 09:58:44 -08001381 rate = iwl3945_rate_get_lowest_plcp(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001382
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001383 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
Zhu Yib481de92007-09-25 17:54:57 -07001384
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001385 rc = iwl3945_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Zhu Yib481de92007-09-25 17:54:57 -07001386 &frame->u.cmd[0]);
1387
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001388 iwl3945_free_frame(priv, frame);
Zhu Yib481de92007-09-25 17:54:57 -07001389
1390 return rc;
1391}
1392
1393/******************************************************************************
1394 *
1395 * EEPROM related functions
1396 *
1397 ******************************************************************************/
1398
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001399static void get_eeprom_mac(struct iwl_priv *priv, u8 *mac)
Zhu Yib481de92007-09-25 17:54:57 -07001400{
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001401 memcpy(mac, priv->eeprom39.mac_address, 6);
Zhu Yib481de92007-09-25 17:54:57 -07001402}
1403
Reinette Chatre74a3a252008-01-23 10:15:19 -08001404/*
1405 * Clear the OWNER_MSK, to establish driver (instead of uCode running on
1406 * embedded controller) as EEPROM reader; each read is a series of pulses
1407 * to/from the EEPROM chip, not a single event, so even reads could conflict
1408 * if they weren't arbitrated by some ownership mechanism. Here, the driver
1409 * simply claims ownership, which should be safe when this function is called
1410 * (i.e. before loading uCode!).
1411 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001412static inline int iwl3945_eeprom_acquire_semaphore(struct iwl_priv *priv)
Reinette Chatre74a3a252008-01-23 10:15:19 -08001413{
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08001414 _iwl_clear_bit(priv, CSR_EEPROM_GP, CSR_EEPROM_GP_IF_OWNER_MSK);
Reinette Chatre74a3a252008-01-23 10:15:19 -08001415 return 0;
1416}
1417
Zhu Yib481de92007-09-25 17:54:57 -07001418/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001419 * iwl3945_eeprom_init - read EEPROM contents
Zhu Yib481de92007-09-25 17:54:57 -07001420 *
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001421 * Load the EEPROM contents from adapter into priv->eeprom39
Zhu Yib481de92007-09-25 17:54:57 -07001422 *
1423 * NOTE: This routine uses the non-debug IO access functions.
1424 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001425int iwl3945_eeprom_init(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001426{
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001427 u16 *e = (u16 *)&priv->eeprom39;
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08001428 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001429 int sz = sizeof(priv->eeprom39);
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001430 int ret;
Zhu Yib481de92007-09-25 17:54:57 -07001431 u16 addr;
1432
1433 /* The EEPROM structure has several padding buffers within it
1434 * and when adding new EEPROM maps is subject to programmer errors
1435 * which may be very difficult to identify without explicitly
1436 * checking the resulting size of the eeprom map. */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001437 BUILD_BUG_ON(sizeof(priv->eeprom39) != IWL_EEPROM_IMAGE_SIZE);
Zhu Yib481de92007-09-25 17:54:57 -07001438
1439 if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) {
Jiri Slaby6f147922008-08-11 23:49:41 +02001440 IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x\n", gp);
Zhu Yib481de92007-09-25 17:54:57 -07001441 return -ENOENT;
1442 }
1443
Cahill, Ben M6440adb2007-11-29 11:09:55 +08001444 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001445 ret = iwl3945_eeprom_acquire_semaphore(priv);
1446 if (ret < 0) {
Ian Schram91e17472007-10-25 17:15:23 +08001447 IWL_ERROR("Failed to acquire EEPROM semaphore.\n");
Zhu Yib481de92007-09-25 17:54:57 -07001448 return -ENOENT;
1449 }
1450
1451 /* eeprom is an array of 16bit values */
1452 for (addr = 0; addr < sz; addr += sizeof(u16)) {
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001453 u32 r;
1454
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08001455 _iwl_write32(priv, CSR_EEPROM_REG,
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001456 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08001457 _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD);
1458 ret = iwl_poll_direct_bit(priv, CSR_EEPROM_REG,
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001459 CSR_EEPROM_REG_READ_VALID_MSK,
1460 IWL_EEPROM_ACCESS_TIMEOUT);
1461 if (ret < 0) {
Jiri Slaby6f147922008-08-11 23:49:41 +02001462 IWL_ERROR("Time out reading EEPROM[%d]\n", addr);
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001463 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07001464 }
Zhu, Yi3d5717a2008-12-11 10:33:36 -08001465
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08001466 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
Tomas Winkler58ff6d42008-02-13 02:47:54 +02001467 e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16));
Zhu Yib481de92007-09-25 17:54:57 -07001468 }
1469
1470 return 0;
1471}
1472
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001473static void iwl3945_unset_hw_params(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001474{
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08001475 if (priv->shared_virt)
Zhu Yib481de92007-09-25 17:54:57 -07001476 pci_free_consistent(priv->pci_dev,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001477 sizeof(struct iwl3945_shared),
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08001478 priv->shared_virt,
1479 priv->shared_phys);
Zhu Yib481de92007-09-25 17:54:57 -07001480}
1481
1482/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001483 * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
Zhu Yib481de92007-09-25 17:54:57 -07001484 *
1485 * return : set the bit for each supported rate insert in ie
1486 */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001487static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
Tomas Winklerc7c46672007-10-18 02:04:15 +02001488 u16 basic_rate, int *left)
Zhu Yib481de92007-09-25 17:54:57 -07001489{
1490 u16 ret_rates = 0, bit;
1491 int i;
Tomas Winklerc7c46672007-10-18 02:04:15 +02001492 u8 *cnt = ie;
1493 u8 *rates = ie + 1;
Zhu Yib481de92007-09-25 17:54:57 -07001494
1495 for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
1496 if (bit & supported_rate) {
1497 ret_rates |= bit;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001498 rates[*cnt] = iwl3945_rates[i].ieee |
Tomas Winklerc7c46672007-10-18 02:04:15 +02001499 ((bit & basic_rate) ? 0x80 : 0x00);
1500 (*cnt)++;
1501 (*left)--;
1502 if ((*left <= 0) ||
1503 (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
Zhu Yib481de92007-09-25 17:54:57 -07001504 break;
1505 }
1506 }
1507
1508 return ret_rates;
1509}
1510
1511/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001512 * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
Zhu Yib481de92007-09-25 17:54:57 -07001513 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001514static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07001515 struct ieee80211_mgmt *frame,
Johannes Berg430cfe92008-10-28 18:06:02 +01001516 int left)
Zhu Yib481de92007-09-25 17:54:57 -07001517{
1518 int len = 0;
1519 u8 *pos = NULL;
Tomas Winklerc7c46672007-10-18 02:04:15 +02001520 u16 active_rates, ret_rates, cck_rates;
Zhu Yib481de92007-09-25 17:54:57 -07001521
1522 /* Make sure there is enough space for the probe request,
1523 * two mandatory IEs and the data */
1524 left -= 24;
1525 if (left < 0)
1526 return 0;
1527 len += 24;
1528
1529 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
Kolekar, Abhijeetb5323d32008-12-19 10:37:22 +08001530 memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07001531 memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
Kolekar, Abhijeetb5323d32008-12-19 10:37:22 +08001532 memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07001533 frame->seq_ctrl = 0;
1534
1535 /* fill in our indirect SSID IE */
1536 /* ...next IE... */
1537
1538 left -= 2;
1539 if (left < 0)
1540 return 0;
1541 len += 2;
1542 pos = &(frame->u.probe_req.variable[0]);
1543 *pos++ = WLAN_EID_SSID;
1544 *pos++ = 0;
1545
Zhu Yib481de92007-09-25 17:54:57 -07001546 /* fill in supported rate */
1547 /* ...next IE... */
1548 left -= 2;
1549 if (left < 0)
1550 return 0;
Tomas Winklerc7c46672007-10-18 02:04:15 +02001551
Zhu Yib481de92007-09-25 17:54:57 -07001552 /* ... fill it in... */
1553 *pos++ = WLAN_EID_SUPP_RATES;
1554 *pos = 0;
Tomas Winklerc7c46672007-10-18 02:04:15 +02001555
1556 priv->active_rate = priv->rates_mask;
1557 active_rates = priv->active_rate;
Zhu Yib481de92007-09-25 17:54:57 -07001558 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1559
Tomas Winklerc7c46672007-10-18 02:04:15 +02001560 cck_rates = IWL_CCK_RATES_MASK & active_rates;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001561 ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
Tomas Winklerc7c46672007-10-18 02:04:15 +02001562 priv->active_rate_basic, &left);
1563 active_rates &= ~ret_rates;
1564
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001565 ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
Tomas Winklerc7c46672007-10-18 02:04:15 +02001566 priv->active_rate_basic, &left);
1567 active_rates &= ~ret_rates;
1568
Zhu Yib481de92007-09-25 17:54:57 -07001569 len += 2 + *pos;
1570 pos += (*pos) + 1;
Tomas Winklerc7c46672007-10-18 02:04:15 +02001571 if (active_rates == 0)
Zhu Yib481de92007-09-25 17:54:57 -07001572 goto fill_end;
1573
1574 /* fill in supported extended rate */
1575 /* ...next IE... */
1576 left -= 2;
1577 if (left < 0)
1578 return 0;
1579 /* ... fill it in... */
1580 *pos++ = WLAN_EID_EXT_SUPP_RATES;
1581 *pos = 0;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001582 iwl3945_supported_rate_to_ie(pos, active_rates,
Tomas Winklerc7c46672007-10-18 02:04:15 +02001583 priv->active_rate_basic, &left);
Zhu Yib481de92007-09-25 17:54:57 -07001584 if (*pos > 0)
1585 len += 2 + *pos;
1586
1587 fill_end:
1588 return (u16)len;
1589}
1590
1591/*
1592 * QoS support
1593*/
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001594static int iwl3945_send_qos_params_command(struct iwl_priv *priv,
Tomas Winkler4c897252008-12-19 10:37:05 +08001595 struct iwl_qosparam_cmd *qos)
Zhu Yib481de92007-09-25 17:54:57 -07001596{
1597
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001598 return iwl3945_send_cmd_pdu(priv, REPLY_QOS_PARAM,
Tomas Winkler4c897252008-12-19 10:37:05 +08001599 sizeof(struct iwl_qosparam_cmd), qos);
Zhu Yib481de92007-09-25 17:54:57 -07001600}
1601
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001602static void iwl3945_reset_qos(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001603{
1604 u16 cw_min = 15;
1605 u16 cw_max = 1023;
1606 u8 aifs = 2;
1607 u8 is_legacy = 0;
1608 unsigned long flags;
1609 int i;
1610
1611 spin_lock_irqsave(&priv->lock, flags);
1612 priv->qos_data.qos_active = 0;
1613
Winkler, Tomas6d1ef1a2008-12-09 11:29:00 -08001614 /* QoS always active in AP and ADHOC mode
1615 * In STA mode wait for association
1616 */
1617 if (priv->iw_mode == NL80211_IFTYPE_ADHOC ||
1618 priv->iw_mode == NL80211_IFTYPE_AP)
1619 priv->qos_data.qos_active = 1;
1620 else
1621 priv->qos_data.qos_active = 0;
1622
1623
1624 /* check for legacy mode */
1625 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC &&
1626 (priv->active_rate & IWL_OFDM_RATES_MASK) == 0) ||
1627 (priv->iw_mode == NL80211_IFTYPE_STATION &&
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001628 (priv->staging39_rxon.flags & RXON_FLG_SHORT_SLOT_MSK) == 0)) {
Zhu Yib481de92007-09-25 17:54:57 -07001629 cw_min = 31;
1630 is_legacy = 1;
1631 }
1632
1633 if (priv->qos_data.qos_active)
1634 aifs = 3;
1635
1636 priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
1637 priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
1638 priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
1639 priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
1640 priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
1641
1642 if (priv->qos_data.qos_active) {
1643 i = 1;
1644 priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
1645 priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
1646 priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
1647 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1648 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1649
1650 i = 2;
1651 priv->qos_data.def_qos_parm.ac[i].cw_min =
1652 cpu_to_le16((cw_min + 1) / 2 - 1);
1653 priv->qos_data.def_qos_parm.ac[i].cw_max =
1654 cpu_to_le16(cw_max);
1655 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1656 if (is_legacy)
1657 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1658 cpu_to_le16(6016);
1659 else
1660 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1661 cpu_to_le16(3008);
1662 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1663
1664 i = 3;
1665 priv->qos_data.def_qos_parm.ac[i].cw_min =
1666 cpu_to_le16((cw_min + 1) / 4 - 1);
1667 priv->qos_data.def_qos_parm.ac[i].cw_max =
1668 cpu_to_le16((cw_max + 1) / 2 - 1);
1669 priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
1670 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1671 if (is_legacy)
1672 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1673 cpu_to_le16(3264);
1674 else
1675 priv->qos_data.def_qos_parm.ac[i].edca_txop =
1676 cpu_to_le16(1504);
1677 } else {
1678 for (i = 1; i < 4; i++) {
1679 priv->qos_data.def_qos_parm.ac[i].cw_min =
1680 cpu_to_le16(cw_min);
1681 priv->qos_data.def_qos_parm.ac[i].cw_max =
1682 cpu_to_le16(cw_max);
1683 priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
1684 priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
1685 priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
1686 }
1687 }
1688 IWL_DEBUG_QOS("set QoS to default \n");
1689
1690 spin_unlock_irqrestore(&priv->lock, flags);
1691}
1692
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001693static void iwl3945_activate_qos(struct iwl_priv *priv, u8 force)
Zhu Yib481de92007-09-25 17:54:57 -07001694{
1695 unsigned long flags;
1696
Zhu Yib481de92007-09-25 17:54:57 -07001697 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1698 return;
1699
Zhu Yib481de92007-09-25 17:54:57 -07001700 spin_lock_irqsave(&priv->lock, flags);
1701 priv->qos_data.def_qos_parm.qos_flags = 0;
1702
1703 if (priv->qos_data.qos_cap.q_AP.queue_request &&
1704 !priv->qos_data.qos_cap.q_AP.txop_request)
1705 priv->qos_data.def_qos_parm.qos_flags |=
1706 QOS_PARAM_FLG_TXOP_TYPE_MSK;
1707
1708 if (priv->qos_data.qos_active)
1709 priv->qos_data.def_qos_parm.qos_flags |=
1710 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
1711
1712 spin_unlock_irqrestore(&priv->lock, flags);
1713
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001714 if (force || iwl3945_is_associated(priv)) {
Tomas Winklera96a27f2008-10-23 23:48:56 -07001715 IWL_DEBUG_QOS("send QoS cmd with QoS active %d \n",
Zhu Yib481de92007-09-25 17:54:57 -07001716 priv->qos_data.qos_active);
1717
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001718 iwl3945_send_qos_params_command(priv,
Zhu Yib481de92007-09-25 17:54:57 -07001719 &(priv->qos_data.def_qos_parm));
1720 }
1721}
1722
Zhu Yib481de92007-09-25 17:54:57 -07001723/*
1724 * Power management (not Tx power!) functions
1725 */
1726#define MSEC_TO_USEC 1024
1727
Tomas Winkler600c0e12008-12-19 10:37:04 +08001728
1729#define NOSLP __constant_cpu_to_le16(0), 0, 0
1730#define SLP IWL_POWER_DRIVER_ALLOW_SLEEP_MSK, 0, 0
Zhu Yib481de92007-09-25 17:54:57 -07001731#define SLP_TIMEOUT(T) __constant_cpu_to_le32((T) * MSEC_TO_USEC)
1732#define SLP_VEC(X0, X1, X2, X3, X4) {__constant_cpu_to_le32(X0), \
1733 __constant_cpu_to_le32(X1), \
1734 __constant_cpu_to_le32(X2), \
1735 __constant_cpu_to_le32(X3), \
1736 __constant_cpu_to_le32(X4)}
1737
Zhu Yib481de92007-09-25 17:54:57 -07001738/* default power management (not Tx power) table values */
Tomas Winklera96a27f2008-10-23 23:48:56 -07001739/* for TIM 0-10 */
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001740static struct iwl_power_vec_entry range_0[IWL39_POWER_AC] = {
Zhu Yib481de92007-09-25 17:54:57 -07001741 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1742 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500), SLP_VEC(1, 2, 3, 4, 4)}, 0},
1743 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300), SLP_VEC(2, 4, 6, 7, 7)}, 0},
1744 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100), SLP_VEC(2, 6, 9, 9, 10)}, 0},
1745 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 10)}, 1},
1746 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25), SLP_VEC(4, 7, 10, 10, 10)}, 1}
1747};
1748
Tomas Winklera96a27f2008-10-23 23:48:56 -07001749/* for TIM > 10 */
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001750static struct iwl_power_vec_entry range_1[IWL39_POWER_AC] = {
Zhu Yib481de92007-09-25 17:54:57 -07001751 {{NOSLP, SLP_TIMEOUT(0), SLP_TIMEOUT(0), SLP_VEC(0, 0, 0, 0, 0)}, 0},
1752 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(500),
1753 SLP_VEC(1, 2, 3, 4, 0xFF)}, 0},
1754 {{SLP, SLP_TIMEOUT(200), SLP_TIMEOUT(300),
1755 SLP_VEC(2, 4, 6, 7, 0xFF)}, 0},
1756 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(100),
1757 SLP_VEC(2, 6, 9, 9, 0xFF)}, 0},
1758 {{SLP, SLP_TIMEOUT(50), SLP_TIMEOUT(25), SLP_VEC(2, 7, 9, 9, 0xFF)}, 0},
1759 {{SLP, SLP_TIMEOUT(25), SLP_TIMEOUT(25),
1760 SLP_VEC(4, 7, 10, 10, 0xFF)}, 0}
1761};
1762
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001763int iwl3945_power_init_handle(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001764{
1765 int rc = 0, i;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001766 struct iwl3945_power_mgr *pow_data;
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001767 int size = sizeof(struct iwl_power_vec_entry) * IWL39_POWER_AC;
Zhu Yib481de92007-09-25 17:54:57 -07001768 u16 pci_pm;
1769
1770 IWL_DEBUG_POWER("Initialize power \n");
1771
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001772 pow_data = &(priv->power_data_39);
Zhu Yib481de92007-09-25 17:54:57 -07001773
1774 memset(pow_data, 0, sizeof(*pow_data));
1775
1776 pow_data->active_index = IWL_POWER_RANGE_0;
1777 pow_data->dtim_val = 0xffff;
1778
1779 memcpy(&pow_data->pwr_range_0[0], &range_0[0], size);
1780 memcpy(&pow_data->pwr_range_1[0], &range_1[0], size);
1781
1782 rc = pci_read_config_word(priv->pci_dev, PCI_LINK_CTRL, &pci_pm);
1783 if (rc != 0)
1784 return 0;
1785 else {
Tomas Winkler600c0e12008-12-19 10:37:04 +08001786 struct iwl_powertable_cmd *cmd;
Zhu Yib481de92007-09-25 17:54:57 -07001787
1788 IWL_DEBUG_POWER("adjust power command flags\n");
1789
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001790 for (i = 0; i < IWL39_POWER_AC; i++) {
Zhu Yib481de92007-09-25 17:54:57 -07001791 cmd = &pow_data->pwr_range_0[i].cmd;
1792
1793 if (pci_pm & 0x1)
1794 cmd->flags &= ~IWL_POWER_PCI_PM_MSK;
1795 else
1796 cmd->flags |= IWL_POWER_PCI_PM_MSK;
1797 }
1798 }
1799 return rc;
1800}
1801
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001802static int iwl3945_update_power_cmd(struct iwl_priv *priv,
Tomas Winkler600c0e12008-12-19 10:37:04 +08001803 struct iwl_powertable_cmd *cmd, u32 mode)
Zhu Yib481de92007-09-25 17:54:57 -07001804{
1805 int rc = 0, i;
1806 u8 skip;
1807 u32 max_sleep = 0;
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001808 struct iwl_power_vec_entry *range;
Zhu Yib481de92007-09-25 17:54:57 -07001809 u8 period = 0;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001810 struct iwl3945_power_mgr *pow_data;
Zhu Yib481de92007-09-25 17:54:57 -07001811
1812 if (mode > IWL_POWER_INDEX_5) {
1813 IWL_DEBUG_POWER("Error invalid power mode \n");
1814 return -1;
1815 }
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08001816 pow_data = &(priv->power_data_39);
Zhu Yib481de92007-09-25 17:54:57 -07001817
1818 if (pow_data->active_index == IWL_POWER_RANGE_0)
1819 range = &pow_data->pwr_range_0[0];
1820 else
1821 range = &pow_data->pwr_range_1[1];
1822
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001823 memcpy(cmd, &range[mode].cmd, sizeof(struct iwl3945_powertable_cmd));
Zhu Yib481de92007-09-25 17:54:57 -07001824
1825#ifdef IWL_MAC80211_DISABLE
1826 if (priv->assoc_network != NULL) {
1827 unsigned long flags;
1828
1829 period = priv->assoc_network->tim.tim_period;
1830 }
1831#endif /*IWL_MAC80211_DISABLE */
1832 skip = range[mode].no_dtim;
1833
1834 if (period == 0) {
1835 period = 1;
1836 skip = 0;
1837 }
1838
1839 if (skip == 0) {
1840 max_sleep = period;
1841 cmd->flags &= ~IWL_POWER_SLEEP_OVER_DTIM_MSK;
1842 } else {
1843 __le32 slp_itrvl = cmd->sleep_interval[IWL_POWER_VEC_SIZE - 1];
1844 max_sleep = (le32_to_cpu(slp_itrvl) / period) * period;
1845 cmd->flags |= IWL_POWER_SLEEP_OVER_DTIM_MSK;
1846 }
1847
1848 for (i = 0; i < IWL_POWER_VEC_SIZE; i++) {
1849 if (le32_to_cpu(cmd->sleep_interval[i]) > max_sleep)
1850 cmd->sleep_interval[i] = cpu_to_le32(max_sleep);
1851 }
1852
1853 IWL_DEBUG_POWER("Flags value = 0x%08X\n", cmd->flags);
1854 IWL_DEBUG_POWER("Tx timeout = %u\n", le32_to_cpu(cmd->tx_data_timeout));
1855 IWL_DEBUG_POWER("Rx timeout = %u\n", le32_to_cpu(cmd->rx_data_timeout));
1856 IWL_DEBUG_POWER("Sleep interval vector = { %d , %d , %d , %d , %d }\n",
1857 le32_to_cpu(cmd->sleep_interval[0]),
1858 le32_to_cpu(cmd->sleep_interval[1]),
1859 le32_to_cpu(cmd->sleep_interval[2]),
1860 le32_to_cpu(cmd->sleep_interval[3]),
1861 le32_to_cpu(cmd->sleep_interval[4]));
1862
1863 return rc;
1864}
1865
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001866static int iwl3945_send_power_mode(struct iwl_priv *priv, u32 mode)
Zhu Yib481de92007-09-25 17:54:57 -07001867{
John W. Linville9a62f732007-11-15 16:27:36 -05001868 u32 uninitialized_var(final_mode);
Zhu Yib481de92007-09-25 17:54:57 -07001869 int rc;
Tomas Winkler600c0e12008-12-19 10:37:04 +08001870 struct iwl_powertable_cmd cmd;
Zhu Yib481de92007-09-25 17:54:57 -07001871
1872 /* If on battery, set to 3,
Ian Schram01ebd062007-10-25 17:15:22 +08001873 * if plugged into AC power, set to CAM ("continuously aware mode"),
Zhu Yib481de92007-09-25 17:54:57 -07001874 * else user level */
1875 switch (mode) {
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001876 case IWL39_POWER_BATTERY:
Zhu Yib481de92007-09-25 17:54:57 -07001877 final_mode = IWL_POWER_INDEX_3;
1878 break;
Samuel Ortiz1125eff2008-12-19 10:37:14 +08001879 case IWL39_POWER_AC:
Zhu Yib481de92007-09-25 17:54:57 -07001880 final_mode = IWL_POWER_MODE_CAM;
1881 break;
1882 default:
1883 final_mode = mode;
1884 break;
1885 }
1886
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001887 iwl3945_update_power_cmd(priv, &cmd, final_mode);
Zhu Yib481de92007-09-25 17:54:57 -07001888
Tomas Winkler600c0e12008-12-19 10:37:04 +08001889 /* FIXME use get_hcmd_size 3945 command is 4 bytes shorter */
1890 rc = iwl3945_send_cmd_pdu(priv, POWER_TABLE_CMD,
1891 sizeof(struct iwl3945_powertable_cmd), &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07001892
1893 if (final_mode == IWL_POWER_MODE_CAM)
1894 clear_bit(STATUS_POWER_PMI, &priv->status);
1895 else
1896 set_bit(STATUS_POWER_PMI, &priv->status);
1897
1898 return rc;
1899}
1900
Zhu Yib481de92007-09-25 17:54:57 -07001901/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001902 * iwl3945_scan_cancel - Cancel any currently executing HW scan
Zhu Yib481de92007-09-25 17:54:57 -07001903 *
1904 * NOTE: priv->mutex is not required before calling this function
1905 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001906static int iwl3945_scan_cancel(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001907{
1908 if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
1909 clear_bit(STATUS_SCANNING, &priv->status);
1910 return 0;
1911 }
1912
1913 if (test_bit(STATUS_SCANNING, &priv->status)) {
1914 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1915 IWL_DEBUG_SCAN("Queuing scan abort.\n");
1916 set_bit(STATUS_SCAN_ABORTING, &priv->status);
1917 queue_work(priv->workqueue, &priv->abort_scan);
1918
1919 } else
1920 IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1921
1922 return test_bit(STATUS_SCANNING, &priv->status);
1923 }
1924
1925 return 0;
1926}
1927
1928/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001929 * iwl3945_scan_cancel_timeout - Cancel any currently executing HW scan
Zhu Yib481de92007-09-25 17:54:57 -07001930 * @ms: amount of time to wait (in milliseconds) for scan to abort
1931 *
1932 * NOTE: priv->mutex must be held before calling this function
1933 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001934static int iwl3945_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
Zhu Yib481de92007-09-25 17:54:57 -07001935{
1936 unsigned long now = jiffies;
1937 int ret;
1938
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001939 ret = iwl3945_scan_cancel(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001940 if (ret && ms) {
1941 mutex_unlock(&priv->mutex);
1942 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1943 test_bit(STATUS_SCANNING, &priv->status))
1944 msleep(1);
1945 mutex_lock(&priv->mutex);
1946
1947 return test_bit(STATUS_SCANNING, &priv->status);
1948 }
1949
1950 return ret;
1951}
1952
Zhu Yib481de92007-09-25 17:54:57 -07001953#define MAX_UCODE_BEACON_INTERVAL 1024
1954#define INTEL_CONN_LISTEN_INTERVAL __constant_cpu_to_le16(0xA)
1955
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001956static __le16 iwl3945_adjust_beacon_interval(u16 beacon_val)
Zhu Yib481de92007-09-25 17:54:57 -07001957{
1958 u16 new_val = 0;
1959 u16 beacon_factor = 0;
1960
1961 beacon_factor =
1962 (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1963 / MAX_UCODE_BEACON_INTERVAL;
1964 new_val = beacon_val / beacon_factor;
1965
1966 return cpu_to_le16(new_val);
1967}
1968
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08001969static void iwl3945_setup_rxon_timing(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001970{
1971 u64 interval_tm_unit;
1972 u64 tsf, result;
1973 unsigned long flags;
1974 struct ieee80211_conf *conf = NULL;
1975 u16 beacon_int = 0;
1976
1977 conf = ieee80211_get_hw_conf(priv->hw);
1978
1979 spin_lock_irqsave(&priv->lock, flags);
Tomas Winkler28afaf92008-12-19 10:37:06 +08001980 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
Zhu Yib481de92007-09-25 17:54:57 -07001981 priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1982
Tomas Winkler28afaf92008-12-19 10:37:06 +08001983 tsf = priv->timestamp;
Zhu Yib481de92007-09-25 17:54:57 -07001984
1985 beacon_int = priv->beacon_int;
1986 spin_unlock_irqrestore(&priv->lock, flags);
1987
Johannes Berg05c914f2008-09-11 00:01:58 +02001988 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Zhu Yib481de92007-09-25 17:54:57 -07001989 if (beacon_int == 0) {
1990 priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1991 priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1992 } else {
1993 priv->rxon_timing.beacon_interval =
1994 cpu_to_le16(beacon_int);
1995 priv->rxon_timing.beacon_interval =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08001996 iwl3945_adjust_beacon_interval(
Zhu Yib481de92007-09-25 17:54:57 -07001997 le16_to_cpu(priv->rxon_timing.beacon_interval));
1998 }
1999
2000 priv->rxon_timing.atim_window = 0;
2001 } else {
2002 priv->rxon_timing.beacon_interval =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002003 iwl3945_adjust_beacon_interval(conf->beacon_int);
Zhu Yib481de92007-09-25 17:54:57 -07002004 /* TODO: we need to get atim_window from upper stack
2005 * for now we set to 0 */
2006 priv->rxon_timing.atim_window = 0;
2007 }
2008
2009 interval_tm_unit =
2010 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
2011 result = do_div(tsf, interval_tm_unit);
2012 priv->rxon_timing.beacon_init_val =
2013 cpu_to_le32((u32) ((u64) interval_tm_unit - result));
2014
2015 IWL_DEBUG_ASSOC
2016 ("beacon interval %d beacon timer %d beacon tim %d\n",
2017 le16_to_cpu(priv->rxon_timing.beacon_interval),
2018 le32_to_cpu(priv->rxon_timing.beacon_init_val),
2019 le16_to_cpu(priv->rxon_timing.atim_window));
2020}
2021
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002022static int iwl3945_scan_initiate(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002023{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002024 if (!iwl3945_is_ready_rf(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07002025 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
2026 return -EIO;
2027 }
2028
2029 if (test_bit(STATUS_SCANNING, &priv->status)) {
2030 IWL_DEBUG_SCAN("Scan already in progress.\n");
2031 return -EAGAIN;
2032 }
2033
2034 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2035 IWL_DEBUG_SCAN("Scan request while abort pending. "
2036 "Queuing.\n");
2037 return -EAGAIN;
2038 }
2039
2040 IWL_DEBUG_INFO("Starting scan...\n");
Ron Rindjunsky66b50042008-06-25 16:46:31 +08002041 if (priv->cfg->sku & IWL_SKU_G)
2042 priv->scan_bands |= BIT(IEEE80211_BAND_2GHZ);
2043 if (priv->cfg->sku & IWL_SKU_A)
2044 priv->scan_bands |= BIT(IEEE80211_BAND_5GHZ);
Zhu Yib481de92007-09-25 17:54:57 -07002045 set_bit(STATUS_SCANNING, &priv->status);
2046 priv->scan_start = jiffies;
2047 priv->scan_pass_start = priv->scan_start;
2048
2049 queue_work(priv->workqueue, &priv->request_scan);
2050
2051 return 0;
2052}
2053
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002054static int iwl3945_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
Zhu Yib481de92007-09-25 17:54:57 -07002055{
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002056 struct iwl3945_rxon_cmd *rxon = &priv->staging39_rxon;
Zhu Yib481de92007-09-25 17:54:57 -07002057
2058 if (hw_decrypt)
2059 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
2060 else
2061 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
2062
2063 return 0;
2064}
2065
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002066static void iwl3945_set_flags_for_phymode(struct iwl_priv *priv,
Johannes Berg8318d782008-01-24 19:38:38 +01002067 enum ieee80211_band band)
Zhu Yib481de92007-09-25 17:54:57 -07002068{
Johannes Berg8318d782008-01-24 19:38:38 +01002069 if (band == IEEE80211_BAND_5GHZ) {
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002070 priv->staging39_rxon.flags &=
Zhu Yib481de92007-09-25 17:54:57 -07002071 ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
2072 | RXON_FLG_CCK_MSK);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002073 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002074 } else {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002075 /* Copied from iwl3945_bg_post_associate() */
Zhu Yib481de92007-09-25 17:54:57 -07002076 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002077 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002078 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002079 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002080
Johannes Berg05c914f2008-09-11 00:01:58 +02002081 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002082 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002083
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002084 priv->staging39_rxon.flags |= RXON_FLG_BAND_24G_MSK;
2085 priv->staging39_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
2086 priv->staging39_rxon.flags &= ~RXON_FLG_CCK_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002087 }
2088}
2089
2090/*
Ian Schram01ebd062007-10-25 17:15:22 +08002091 * initialize rxon structure with default values from eeprom
Zhu Yib481de92007-09-25 17:54:57 -07002092 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002093static void iwl3945_connection_init_rx_config(struct iwl_priv *priv,
Zhu, Yi60294de2008-10-29 14:05:45 -07002094 int mode)
Zhu Yib481de92007-09-25 17:54:57 -07002095{
Samuel Ortizd20b3c62008-12-19 10:37:15 +08002096 const struct iwl_channel_info *ch_info;
Zhu Yib481de92007-09-25 17:54:57 -07002097
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002098 memset(&priv->staging39_rxon, 0, sizeof(priv->staging39_rxon));
Zhu Yib481de92007-09-25 17:54:57 -07002099
Zhu, Yi60294de2008-10-29 14:05:45 -07002100 switch (mode) {
Johannes Berg05c914f2008-09-11 00:01:58 +02002101 case NL80211_IFTYPE_AP:
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002102 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_AP;
Zhu Yib481de92007-09-25 17:54:57 -07002103 break;
2104
Johannes Berg05c914f2008-09-11 00:01:58 +02002105 case NL80211_IFTYPE_STATION:
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002106 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_ESS;
2107 priv->staging39_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002108 break;
2109
Johannes Berg05c914f2008-09-11 00:01:58 +02002110 case NL80211_IFTYPE_ADHOC:
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002111 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_IBSS;
2112 priv->staging39_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
2113 priv->staging39_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
Zhu Yib481de92007-09-25 17:54:57 -07002114 RXON_FILTER_ACCEPT_GRP_MSK;
2115 break;
2116
Johannes Berg05c914f2008-09-11 00:01:58 +02002117 case NL80211_IFTYPE_MONITOR:
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002118 priv->staging39_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
2119 priv->staging39_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
Zhu Yib481de92007-09-25 17:54:57 -07002120 RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
2121 break;
Tomas Winkler69dc5d92008-03-25 16:33:41 -07002122 default:
Zhu, Yi60294de2008-10-29 14:05:45 -07002123 IWL_ERROR("Unsupported interface type %d\n", mode);
Tomas Winkler69dc5d92008-03-25 16:33:41 -07002124 break;
Zhu Yib481de92007-09-25 17:54:57 -07002125 }
2126
2127#if 0
2128 /* TODO: Figure out when short_preamble would be set and cache from
2129 * that */
2130 if (!hw_to_local(priv->hw)->short_preamble)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002131 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002132 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002133 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002134#endif
2135
Johannes Berg8318d782008-01-24 19:38:38 +01002136 ch_info = iwl3945_get_channel_info(priv, priv->band,
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002137 le16_to_cpu(priv->active39_rxon.channel));
Zhu Yib481de92007-09-25 17:54:57 -07002138
2139 if (!ch_info)
2140 ch_info = &priv->channel_info[0];
2141
2142 /*
2143 * in some case A channels are all non IBSS
2144 * in this case force B/G channel
2145 */
Zhu, Yi60294de2008-10-29 14:05:45 -07002146 if ((mode == NL80211_IFTYPE_ADHOC) && !(is_channel_ibss(ch_info)))
Zhu Yib481de92007-09-25 17:54:57 -07002147 ch_info = &priv->channel_info[0];
2148
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002149 priv->staging39_rxon.channel = cpu_to_le16(ch_info->channel);
Zhu Yib481de92007-09-25 17:54:57 -07002150 if (is_channel_a_band(ch_info))
Johannes Berg8318d782008-01-24 19:38:38 +01002151 priv->band = IEEE80211_BAND_5GHZ;
Zhu Yib481de92007-09-25 17:54:57 -07002152 else
Johannes Berg8318d782008-01-24 19:38:38 +01002153 priv->band = IEEE80211_BAND_2GHZ;
Zhu Yib481de92007-09-25 17:54:57 -07002154
Johannes Berg8318d782008-01-24 19:38:38 +01002155 iwl3945_set_flags_for_phymode(priv, priv->band);
Zhu Yib481de92007-09-25 17:54:57 -07002156
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002157 priv->staging39_rxon.ofdm_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002158 (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002159 priv->staging39_rxon.cck_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002160 (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2161}
2162
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002163static int iwl3945_set_mode(struct iwl_priv *priv, int mode)
Zhu Yib481de92007-09-25 17:54:57 -07002164{
Johannes Berg05c914f2008-09-11 00:01:58 +02002165 if (mode == NL80211_IFTYPE_ADHOC) {
Samuel Ortizd20b3c62008-12-19 10:37:15 +08002166 const struct iwl_channel_info *ch_info;
Zhu Yib481de92007-09-25 17:54:57 -07002167
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002168 ch_info = iwl3945_get_channel_info(priv,
Johannes Berg8318d782008-01-24 19:38:38 +01002169 priv->band,
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002170 le16_to_cpu(priv->staging39_rxon.channel));
Zhu Yib481de92007-09-25 17:54:57 -07002171
2172 if (!ch_info || !is_channel_ibss(ch_info)) {
2173 IWL_ERROR("channel %d not IBSS channel\n",
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002174 le16_to_cpu(priv->staging39_rxon.channel));
Zhu Yib481de92007-09-25 17:54:57 -07002175 return -EINVAL;
2176 }
2177 }
2178
Zhu, Yi60294de2008-10-29 14:05:45 -07002179 iwl3945_connection_init_rx_config(priv, mode);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002180 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07002181
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002182 iwl3945_clear_stations_table(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002183
Tomas Winklera96a27f2008-10-23 23:48:56 -07002184 /* don't commit rxon if rf-kill is on*/
Mohamed Abbasfde35712007-11-29 11:10:15 +08002185 if (!iwl3945_is_ready_rf(priv))
2186 return -EAGAIN;
2187
2188 cancel_delayed_work(&priv->scan_check);
2189 if (iwl3945_scan_cancel_timeout(priv, 100)) {
2190 IWL_WARNING("Aborted scan still in progress after 100ms\n");
2191 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2192 return -EAGAIN;
2193 }
2194
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002195 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002196
2197 return 0;
2198}
2199
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002200static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
Johannes Berge039fa42008-05-15 12:55:29 +02002201 struct ieee80211_tx_info *info,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002202 struct iwl3945_cmd *cmd,
Zhu Yib481de92007-09-25 17:54:57 -07002203 struct sk_buff *skb_frag,
2204 int last_frag)
2205{
Ivo van Doorn1c014422008-04-17 19:41:02 +02002206 struct iwl3945_hw_key *keyinfo =
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002207 &priv->stations_39[info->control.hw_key->hw_key_idx].keyinfo;
Zhu Yib481de92007-09-25 17:54:57 -07002208
2209 switch (keyinfo->alg) {
2210 case ALG_CCMP:
2211 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM;
2212 memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen);
Tomas Winklera96a27f2008-10-23 23:48:56 -07002213 IWL_DEBUG_TX("tx_cmd with AES hwcrypto\n");
Zhu Yib481de92007-09-25 17:54:57 -07002214 break;
2215
2216 case ALG_TKIP:
2217#if 0
2218 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
2219
2220 if (last_frag)
2221 memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
2222 8);
2223 else
2224 memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
2225#endif
2226 break;
2227
2228 case ALG_WEP:
2229 cmd->cmd.tx.sec_ctl = TX_CMD_SEC_WEP |
Johannes Berge039fa42008-05-15 12:55:29 +02002230 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
Zhu Yib481de92007-09-25 17:54:57 -07002231
2232 if (keyinfo->keylen == 13)
2233 cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128;
2234
2235 memcpy(&cmd->cmd.tx.key[3], keyinfo->key, keyinfo->keylen);
2236
2237 IWL_DEBUG_TX("Configuring packet for WEP encryption "
Johannes Berge039fa42008-05-15 12:55:29 +02002238 "with key %d\n", info->control.hw_key->hw_key_idx);
Zhu Yib481de92007-09-25 17:54:57 -07002239 break;
2240
Zhu Yib481de92007-09-25 17:54:57 -07002241 default:
Tomas Winkler978785a2008-12-19 10:37:31 +08002242 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
Zhu Yib481de92007-09-25 17:54:57 -07002243 break;
2244 }
2245}
2246
2247/*
2248 * handle build REPLY_TX command notification.
2249 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002250static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002251 struct iwl3945_cmd *cmd,
Johannes Berge039fa42008-05-15 12:55:29 +02002252 struct ieee80211_tx_info *info,
Zhu Yib481de92007-09-25 17:54:57 -07002253 struct ieee80211_hdr *hdr,
2254 int is_unicast, u8 std_id)
2255{
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002256 __le16 fc = hdr->frame_control;
Zhu Yib481de92007-09-25 17:54:57 -07002257 __le32 tx_flags = cmd->cmd.tx.tx_flags;
Johannes Berge6a98542008-10-21 12:40:02 +02002258 u8 rc_flags = info->control.rates[0].flags;
Zhu Yib481de92007-09-25 17:54:57 -07002259
2260 cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
Johannes Berge039fa42008-05-15 12:55:29 +02002261 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
Zhu Yib481de92007-09-25 17:54:57 -07002262 tx_flags |= TX_CMD_FLG_ACK_MSK;
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002263 if (ieee80211_is_mgmt(fc))
Zhu Yib481de92007-09-25 17:54:57 -07002264 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002265 if (ieee80211_is_probe_resp(fc) &&
Zhu Yib481de92007-09-25 17:54:57 -07002266 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
2267 tx_flags |= TX_CMD_FLG_TSF_MSK;
2268 } else {
2269 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
2270 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
2271 }
2272
2273 cmd->cmd.tx.sta_id = std_id;
Harvey Harrison8b7b1e02008-06-11 14:21:56 -07002274 if (ieee80211_has_morefrags(fc))
Zhu Yib481de92007-09-25 17:54:57 -07002275 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
2276
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002277 if (ieee80211_is_data_qos(fc)) {
2278 u8 *qc = ieee80211_get_qos_ctl(hdr);
Tomas Winkler54dbb522008-05-15 13:54:06 +08002279 cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
Zhu Yib481de92007-09-25 17:54:57 -07002280 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
Tomas Winkler54dbb522008-05-15 13:54:06 +08002281 } else {
Zhu Yib481de92007-09-25 17:54:57 -07002282 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
Tomas Winkler54dbb522008-05-15 13:54:06 +08002283 }
Zhu Yib481de92007-09-25 17:54:57 -07002284
Johannes Berge6a98542008-10-21 12:40:02 +02002285 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
Zhu Yib481de92007-09-25 17:54:57 -07002286 tx_flags |= TX_CMD_FLG_RTS_MSK;
2287 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
Johannes Berge6a98542008-10-21 12:40:02 +02002288 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
Zhu Yib481de92007-09-25 17:54:57 -07002289 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
2290 tx_flags |= TX_CMD_FLG_CTS_MSK;
2291 }
2292
2293 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
2294 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
2295
2296 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002297 if (ieee80211_is_mgmt(fc)) {
2298 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
Ian Schrambc434dd2007-10-25 17:15:29 +08002299 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3);
Zhu Yib481de92007-09-25 17:54:57 -07002300 else
Ian Schrambc434dd2007-10-25 17:15:29 +08002301 cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2);
Mohamed Abbasab53d8a2008-03-25 16:33:36 -07002302 } else {
Zhu Yib481de92007-09-25 17:54:57 -07002303 cmd->cmd.tx.timeout.pm_frame_timeout = 0;
Mohamed Abbasab53d8a2008-03-25 16:33:36 -07002304#ifdef CONFIG_IWL3945_LEDS
2305 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
2306#endif
2307 }
Zhu Yib481de92007-09-25 17:54:57 -07002308
2309 cmd->cmd.tx.driver_txop = 0;
2310 cmd->cmd.tx.tx_flags = tx_flags;
2311 cmd->cmd.tx.next_frame_len = 0;
2312}
2313
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002314/**
2315 * iwl3945_get_sta_id - Find station's index within station table
2316 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002317static int iwl3945_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
Zhu Yib481de92007-09-25 17:54:57 -07002318{
2319 int sta_id;
2320 u16 fc = le16_to_cpu(hdr->frame_control);
2321
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002322 /* If this frame is broadcast or management, use broadcast station id */
Zhu Yib481de92007-09-25 17:54:57 -07002323 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
2324 is_multicast_ether_addr(hdr->addr1))
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002325 return priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -07002326
2327 switch (priv->iw_mode) {
2328
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002329 /* If we are a client station in a BSS network, use the special
2330 * AP station entry (that's the only station we communicate with) */
Johannes Berg05c914f2008-09-11 00:01:58 +02002331 case NL80211_IFTYPE_STATION:
Zhu Yib481de92007-09-25 17:54:57 -07002332 return IWL_AP_ID;
2333
2334 /* If we are an AP, then find the station, or use BCAST */
Johannes Berg05c914f2008-09-11 00:01:58 +02002335 case NL80211_IFTYPE_AP:
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002336 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Zhu Yib481de92007-09-25 17:54:57 -07002337 if (sta_id != IWL_INVALID_STATION)
2338 return sta_id;
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002339 return priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -07002340
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002341 /* If this frame is going out to an IBSS network, find the station,
2342 * or create a new station table entry */
Johannes Berg05c914f2008-09-11 00:01:58 +02002343 case NL80211_IFTYPE_ADHOC: {
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002344 /* Create new station table entry */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002345 sta_id = iwl3945_hw_find_station(priv, hdr->addr1);
Zhu Yib481de92007-09-25 17:54:57 -07002346 if (sta_id != IWL_INVALID_STATION)
2347 return sta_id;
2348
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002349 sta_id = iwl3945_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
Zhu Yib481de92007-09-25 17:54:57 -07002350
2351 if (sta_id != IWL_INVALID_STATION)
2352 return sta_id;
2353
Johannes Berge1749612008-10-27 15:59:26 -07002354 IWL_DEBUG_DROP("Station %pM not in station map. "
Zhu Yib481de92007-09-25 17:54:57 -07002355 "Defaulting to broadcast...\n",
Johannes Berge1749612008-10-27 15:59:26 -07002356 hdr->addr1);
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08002357 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002358 return priv->hw_params.bcast_sta_id;
Joe Perches0795af52007-10-03 17:59:30 -07002359 }
Stefanik Gábor914233d2008-06-30 17:23:30 +08002360 /* If we are in monitor mode, use BCAST. This is required for
2361 * packet injection. */
Johannes Berg05c914f2008-09-11 00:01:58 +02002362 case NL80211_IFTYPE_MONITOR:
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002363 return priv->hw_params.bcast_sta_id;
Stefanik Gábor914233d2008-06-30 17:23:30 +08002364
Zhu Yib481de92007-09-25 17:54:57 -07002365 default:
Jiri Slaby6f147922008-08-11 23:49:41 +02002366 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002367 return priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -07002368 }
2369}
2370
2371/*
2372 * start REPLY_TX command process
2373 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002374static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
Zhu Yib481de92007-09-25 17:54:57 -07002375{
2376 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
Johannes Berge039fa42008-05-15 12:55:29 +02002377 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002378 struct iwl3945_tfd_frame *tfd;
Zhu Yib481de92007-09-25 17:54:57 -07002379 u32 *control_flags;
Johannes Berge2530082008-05-17 00:57:14 +02002380 int txq_id = skb_get_queue_mapping(skb);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002381 struct iwl3945_tx_queue *txq = NULL;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08002382 struct iwl_queue *q = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07002383 dma_addr_t phys_addr;
2384 dma_addr_t txcmd_phys;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002385 struct iwl3945_cmd *out_cmd = NULL;
Tomas Winkler54dbb522008-05-15 13:54:06 +08002386 u16 len, idx, len_org, hdr_len;
2387 u8 id;
2388 u8 unicast;
Zhu Yib481de92007-09-25 17:54:57 -07002389 u8 sta_id;
Tomas Winkler54dbb522008-05-15 13:54:06 +08002390 u8 tid = 0;
Zhu Yib481de92007-09-25 17:54:57 -07002391 u16 seq_number = 0;
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002392 __le16 fc;
Zhu Yib481de92007-09-25 17:54:57 -07002393 u8 wait_write_ptr = 0;
Tomas Winkler54dbb522008-05-15 13:54:06 +08002394 u8 *qc = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07002395 unsigned long flags;
2396 int rc;
2397
2398 spin_lock_irqsave(&priv->lock, flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002399 if (iwl3945_is_rfkill(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07002400 IWL_DEBUG_DROP("Dropping - RF KILL\n");
2401 goto drop_unlock;
2402 }
2403
Johannes Berge039fa42008-05-15 12:55:29 +02002404 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
Zhu Yib481de92007-09-25 17:54:57 -07002405 IWL_ERROR("ERROR: No TX rate available.\n");
2406 goto drop_unlock;
2407 }
2408
2409 unicast = !is_multicast_ether_addr(hdr->addr1);
2410 id = 0;
2411
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002412 fc = hdr->frame_control;
Zhu Yib481de92007-09-25 17:54:57 -07002413
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08002414#ifdef CONFIG_IWL3945_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -07002415 if (ieee80211_is_auth(fc))
2416 IWL_DEBUG_TX("Sending AUTH frame\n");
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002417 else if (ieee80211_is_assoc_req(fc))
Zhu Yib481de92007-09-25 17:54:57 -07002418 IWL_DEBUG_TX("Sending ASSOC frame\n");
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002419 else if (ieee80211_is_reassoc_req(fc))
Zhu Yib481de92007-09-25 17:54:57 -07002420 IWL_DEBUG_TX("Sending REASSOC frame\n");
2421#endif
2422
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08002423 /* drop all data frame if we are not associated */
Stefanik Gábor914233d2008-06-30 17:23:30 +08002424 if (ieee80211_is_data(fc) &&
Johannes Berg05c914f2008-09-11 00:01:58 +02002425 (priv->iw_mode != NL80211_IFTYPE_MONITOR) && /* packet injection */
Stefanik Gábor914233d2008-06-30 17:23:30 +08002426 (!iwl3945_is_associated(priv) ||
Johannes Berg05c914f2008-09-11 00:01:58 +02002427 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002428 IWL_DEBUG_DROP("Dropping - !iwl3945_is_associated\n");
Zhu Yib481de92007-09-25 17:54:57 -07002429 goto drop_unlock;
2430 }
2431
2432 spin_unlock_irqrestore(&priv->lock, flags);
2433
Harvey Harrison7294ec92008-07-15 18:43:59 -07002434 hdr_len = ieee80211_hdrlen(fc);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002435
2436 /* Find (or create) index into station table for destination station */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002437 sta_id = iwl3945_get_sta_id(priv, hdr);
Zhu Yib481de92007-09-25 17:54:57 -07002438 if (sta_id == IWL_INVALID_STATION) {
Johannes Berge1749612008-10-27 15:59:26 -07002439 IWL_DEBUG_DROP("Dropping - INVALID STATION: %pM\n",
2440 hdr->addr1);
Zhu Yib481de92007-09-25 17:54:57 -07002441 goto drop;
2442 }
2443
2444 IWL_DEBUG_RATE("station Id %d\n", sta_id);
2445
Harvey Harrisonfd7c8a42008-06-11 14:21:56 -07002446 if (ieee80211_is_data_qos(fc)) {
2447 qc = ieee80211_get_qos_ctl(hdr);
Harvey Harrison7294ec92008-07-15 18:43:59 -07002448 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002449 seq_number = priv->stations_39[sta_id].tid[tid].seq_number &
Zhu Yib481de92007-09-25 17:54:57 -07002450 IEEE80211_SCTL_SEQ;
2451 hdr->seq_ctrl = cpu_to_le16(seq_number) |
2452 (hdr->seq_ctrl &
2453 __constant_cpu_to_le16(IEEE80211_SCTL_FRAG));
2454 seq_number += 0x10;
2455 }
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002456
2457 /* Descriptor for chosen Tx queue */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002458 txq = &priv->txq39[txq_id];
Zhu Yib481de92007-09-25 17:54:57 -07002459 q = &txq->q;
2460
2461 spin_lock_irqsave(&priv->lock, flags);
2462
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002463 /* Set up first empty TFD within this queue's circular TFD buffer */
Tomas Winklerfc4b6852007-10-25 17:15:24 +08002464 tfd = &txq->bd[q->write_ptr];
Zhu Yib481de92007-09-25 17:54:57 -07002465 memset(tfd, 0, sizeof(*tfd));
2466 control_flags = (u32 *) tfd;
Tomas Winklerfc4b6852007-10-25 17:15:24 +08002467 idx = get_cmd_index(q, q->write_ptr, 0);
Zhu Yib481de92007-09-25 17:54:57 -07002468
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002469 /* Set up driver data for this TFD */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002470 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info));
Tomas Winklerfc4b6852007-10-25 17:15:24 +08002471 txq->txb[q->write_ptr].skb[0] = skb;
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002472
2473 /* Init first empty entry in queue's array of Tx/cmd buffers */
Zhu Yib481de92007-09-25 17:54:57 -07002474 out_cmd = &txq->cmd[idx];
2475 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
2476 memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx));
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002477
2478 /*
2479 * Set up the Tx-command (not MAC!) header.
2480 * Store the chosen Tx queue and TFD index within the sequence field;
2481 * after Tx, uCode's Tx response will return this value so driver can
2482 * locate the frame within the tx queue and do post-tx processing.
2483 */
Zhu Yib481de92007-09-25 17:54:57 -07002484 out_cmd->hdr.cmd = REPLY_TX;
2485 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
Tomas Winklerfc4b6852007-10-25 17:15:24 +08002486 INDEX_TO_SEQ(q->write_ptr)));
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002487
2488 /* Copy MAC header from skb into command buffer */
Zhu Yib481de92007-09-25 17:54:57 -07002489 memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len);
2490
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002491 /*
2492 * Use the first empty entry in this queue's command buffer array
2493 * to contain the Tx command and MAC header concatenated together
2494 * (payload data will be in another buffer).
2495 * Size of this varies, due to varying MAC header length.
2496 * If end is not dword aligned, we'll have 2 extra bytes at the end
2497 * of the MAC header (device reads on dword boundaries).
2498 * We'll tell device about this padding later.
2499 */
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08002500 len = sizeof(struct iwl3945_tx_cmd) +
Tomas Winkler4c897252008-12-19 10:37:05 +08002501 sizeof(struct iwl_cmd_header) + hdr_len;
Zhu Yib481de92007-09-25 17:54:57 -07002502
2503 len_org = len;
2504 len = (len + 3) & ~3;
2505
2506 if (len_org != len)
2507 len_org = 1;
2508 else
2509 len_org = 0;
2510
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002511 /* Physical address of this Tx command's header (not MAC header!),
2512 * within command buffer array. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002513 txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl3945_cmd) * idx +
2514 offsetof(struct iwl3945_cmd, hdr);
Zhu Yib481de92007-09-25 17:54:57 -07002515
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002516 /* Add buffer containing Tx command and MAC(!) header to TFD's
2517 * first entry */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002518 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
Zhu Yib481de92007-09-25 17:54:57 -07002519
Johannes Bergd0f09802008-07-29 11:32:07 +02002520 if (info->control.hw_key)
Johannes Berge039fa42008-05-15 12:55:29 +02002521 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, 0);
Zhu Yib481de92007-09-25 17:54:57 -07002522
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002523 /* Set up TFD's 2nd entry to point directly to remainder of skb,
2524 * if any (802.11 null frames have no payload). */
Zhu Yib481de92007-09-25 17:54:57 -07002525 len = skb->len - hdr_len;
2526 if (len) {
2527 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
2528 len, PCI_DMA_TODEVICE);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002529 iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
Zhu Yib481de92007-09-25 17:54:57 -07002530 }
2531
Zhu Yib481de92007-09-25 17:54:57 -07002532 if (!len)
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002533 /* If there is no payload, then we use only one Tx buffer */
Zhu Yib481de92007-09-25 17:54:57 -07002534 *control_flags = TFD_CTL_COUNT_SET(1);
2535 else
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002536 /* Else use 2 buffers.
2537 * Tell 3945 about any padding after MAC header */
Zhu Yib481de92007-09-25 17:54:57 -07002538 *control_flags = TFD_CTL_COUNT_SET(2) |
2539 TFD_CTL_PAD_SET(U32_PAD(len));
2540
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002541 /* Total # bytes to be transmitted */
Zhu Yib481de92007-09-25 17:54:57 -07002542 len = (u16)skb->len;
2543 out_cmd->cmd.tx.len = cpu_to_le16(len);
2544
2545 /* TODO need this for burst mode later on */
Johannes Berge039fa42008-05-15 12:55:29 +02002546 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, unicast, sta_id);
Zhu Yib481de92007-09-25 17:54:57 -07002547
2548 /* set is_hcca to 0; it probably will never be implemented */
Johannes Berge039fa42008-05-15 12:55:29 +02002549 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
Zhu Yib481de92007-09-25 17:54:57 -07002550
2551 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
2552 out_cmd->cmd.tx.tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
2553
Harvey Harrison8b7b1e02008-06-11 14:21:56 -07002554 if (!ieee80211_has_morefrags(hdr->frame_control)) {
Zhu Yib481de92007-09-25 17:54:57 -07002555 txq->need_update = 1;
Tomas Winkler3ac7f142008-07-21 02:40:14 +03002556 if (qc)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002557 priv->stations_39[sta_id].tid[tid].seq_number = seq_number;
Zhu Yib481de92007-09-25 17:54:57 -07002558 } else {
2559 wait_write_ptr = 1;
2560 txq->need_update = 0;
2561 }
2562
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08002563 iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload,
Zhu Yib481de92007-09-25 17:54:57 -07002564 sizeof(out_cmd->cmd.tx));
2565
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08002566 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr,
Harvey Harrison7294ec92008-07-15 18:43:59 -07002567 ieee80211_hdrlen(fc));
Zhu Yib481de92007-09-25 17:54:57 -07002568
Cahill, Ben M6440adb2007-11-29 11:09:55 +08002569 /* Tell device the write index *just past* this latest filled TFD */
Tomas Winklerc54b6792008-03-06 17:36:53 -08002570 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002571 rc = iwl3945_tx_queue_update_write_ptr(priv, txq);
Zhu Yib481de92007-09-25 17:54:57 -07002572 spin_unlock_irqrestore(&priv->lock, flags);
2573
2574 if (rc)
2575 return rc;
2576
Samuel Ortizd20b3c62008-12-19 10:37:15 +08002577 if ((iwl_queue_space(q) < q->high_mark)
Zhu Yib481de92007-09-25 17:54:57 -07002578 && priv->mac80211_registered) {
2579 if (wait_write_ptr) {
2580 spin_lock_irqsave(&priv->lock, flags);
2581 txq->need_update = 1;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002582 iwl3945_tx_queue_update_write_ptr(priv, txq);
Zhu Yib481de92007-09-25 17:54:57 -07002583 spin_unlock_irqrestore(&priv->lock, flags);
2584 }
2585
Johannes Berge2530082008-05-17 00:57:14 +02002586 ieee80211_stop_queue(priv->hw, skb_get_queue_mapping(skb));
Zhu Yib481de92007-09-25 17:54:57 -07002587 }
2588
2589 return 0;
2590
2591drop_unlock:
2592 spin_unlock_irqrestore(&priv->lock, flags);
2593drop:
2594 return -1;
2595}
2596
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002597static void iwl3945_set_rate(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002598{
Johannes Berg8318d782008-01-24 19:38:38 +01002599 const struct ieee80211_supported_band *sband = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07002600 struct ieee80211_rate *rate;
2601 int i;
2602
Johannes Berg8318d782008-01-24 19:38:38 +01002603 sband = iwl3945_get_band(priv, priv->band);
2604 if (!sband) {
Saleem Abdulrasoolc4ba9622007-11-18 23:59:08 -08002605 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
2606 return;
2607 }
Zhu Yib481de92007-09-25 17:54:57 -07002608
2609 priv->active_rate = 0;
2610 priv->active_rate_basic = 0;
2611
Johannes Berg8318d782008-01-24 19:38:38 +01002612 IWL_DEBUG_RATE("Setting rates for %s GHz\n",
2613 sband->band == IEEE80211_BAND_2GHZ ? "2.4" : "5");
Zhu Yib481de92007-09-25 17:54:57 -07002614
Johannes Berg8318d782008-01-24 19:38:38 +01002615 for (i = 0; i < sband->n_bitrates; i++) {
2616 rate = &sband->bitrates[i];
2617 if ((rate->hw_value < IWL_RATE_COUNT) &&
2618 !(rate->flags & IEEE80211_CHAN_DISABLED)) {
2619 IWL_DEBUG_RATE("Adding rate index %d (plcp %d)\n",
2620 rate->hw_value, iwl3945_rates[rate->hw_value].plcp);
2621 priv->active_rate |= (1 << rate->hw_value);
2622 }
Zhu Yib481de92007-09-25 17:54:57 -07002623 }
2624
2625 IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
2626 priv->active_rate, priv->active_rate_basic);
2627
2628 /*
2629 * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
2630 * otherwise set it to the default of all CCK rates and 6, 12, 24 for
2631 * OFDM
2632 */
2633 if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002634 priv->staging39_rxon.cck_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002635 ((priv->active_rate_basic &
2636 IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
2637 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002638 priv->staging39_rxon.cck_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002639 (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
2640
2641 if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002642 priv->staging39_rxon.ofdm_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002643 ((priv->active_rate_basic &
2644 (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
2645 IWL_FIRST_OFDM_RATE) & 0xFF;
2646 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002647 priv->staging39_rxon.ofdm_basic_rates =
Zhu Yib481de92007-09-25 17:54:57 -07002648 (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
2649}
2650
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002651static void iwl3945_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
Zhu Yib481de92007-09-25 17:54:57 -07002652{
2653 unsigned long flags;
2654
2655 if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
2656 return;
2657
2658 IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
2659 disable_radio ? "OFF" : "ON");
2660
2661 if (disable_radio) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002662 iwl3945_scan_cancel(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002663 /* FIXME: This is a workaround for AP */
Johannes Berg05c914f2008-09-11 00:01:58 +02002664 if (priv->iw_mode != NL80211_IFTYPE_AP) {
Zhu Yib481de92007-09-25 17:54:57 -07002665 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08002666 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Zhu Yib481de92007-09-25 17:54:57 -07002667 CSR_UCODE_SW_BIT_RFKILL);
2668 spin_unlock_irqrestore(&priv->lock, flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002669 iwl3945_send_card_state(priv, CARD_STATE_CMD_DISABLE, 0);
Zhu Yib481de92007-09-25 17:54:57 -07002670 set_bit(STATUS_RF_KILL_SW, &priv->status);
2671 }
2672 return;
2673 }
2674
2675 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08002676 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Zhu Yib481de92007-09-25 17:54:57 -07002677
2678 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2679 spin_unlock_irqrestore(&priv->lock, flags);
2680
2681 /* wake up ucode */
2682 msleep(10);
2683
2684 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08002685 iwl_read32(priv, CSR_UCODE_DRV_GP1);
2686 if (!iwl_grab_nic_access(priv))
2687 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002688 spin_unlock_irqrestore(&priv->lock, flags);
2689
2690 if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
2691 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2692 "disabled by HW switch\n");
2693 return;
2694 }
2695
Zhu Yi808e72a2008-06-12 09:47:17 +08002696 if (priv->is_open)
2697 queue_work(priv->workqueue, &priv->restart);
Zhu Yib481de92007-09-25 17:54:57 -07002698 return;
2699}
2700
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002701void iwl3945_set_decrypted_flag(struct iwl_priv *priv, struct sk_buff *skb,
Zhu Yib481de92007-09-25 17:54:57 -07002702 u32 decrypt_res, struct ieee80211_rx_status *stats)
2703{
2704 u16 fc =
2705 le16_to_cpu(((struct ieee80211_hdr *)skb->data)->frame_control);
2706
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002707 if (priv->active39_rxon.filter_flags & RXON_FILTER_DIS_DECRYPT_MSK)
Zhu Yib481de92007-09-25 17:54:57 -07002708 return;
2709
2710 if (!(fc & IEEE80211_FCTL_PROTECTED))
2711 return;
2712
2713 IWL_DEBUG_RX("decrypt_res:0x%x\n", decrypt_res);
2714 switch (decrypt_res & RX_RES_STATUS_SEC_TYPE_MSK) {
2715 case RX_RES_STATUS_SEC_TYPE_TKIP:
2716 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2717 RX_RES_STATUS_BAD_ICV_MIC)
2718 stats->flag |= RX_FLAG_MMIC_ERROR;
2719 case RX_RES_STATUS_SEC_TYPE_WEP:
2720 case RX_RES_STATUS_SEC_TYPE_CCMP:
2721 if ((decrypt_res & RX_RES_STATUS_DECRYPT_TYPE_MSK) ==
2722 RX_RES_STATUS_DECRYPT_OK) {
2723 IWL_DEBUG_RX("hw decrypt successfully!!!\n");
2724 stats->flag |= RX_FLAG_DECRYPTED;
2725 }
2726 break;
2727
2728 default:
2729 break;
2730 }
2731}
2732
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08002733#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Zhu Yib481de92007-09-25 17:54:57 -07002734
2735#include "iwl-spectrum.h"
2736
2737#define BEACON_TIME_MASK_LOW 0x00FFFFFF
2738#define BEACON_TIME_MASK_HIGH 0xFF000000
2739#define TIME_UNIT 1024
2740
2741/*
2742 * extended beacon time format
2743 * time in usec will be changed into a 32-bit value in 8:24 format
2744 * the high 1 byte is the beacon counts
2745 * the lower 3 bytes is the time in usec within one beacon interval
2746 */
2747
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002748static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
Zhu Yib481de92007-09-25 17:54:57 -07002749{
2750 u32 quot;
2751 u32 rem;
2752 u32 interval = beacon_interval * 1024;
2753
2754 if (!interval || !usec)
2755 return 0;
2756
2757 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
2758 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
2759
2760 return (quot << 24) + rem;
2761}
2762
2763/* base is usually what we get from ucode with each received frame,
2764 * the same as HW timer counter counting down
2765 */
2766
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002767static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
Zhu Yib481de92007-09-25 17:54:57 -07002768{
2769 u32 base_low = base & BEACON_TIME_MASK_LOW;
2770 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
2771 u32 interval = beacon_interval * TIME_UNIT;
2772 u32 res = (base & BEACON_TIME_MASK_HIGH) +
2773 (addon & BEACON_TIME_MASK_HIGH);
2774
2775 if (base_low > addon_low)
2776 res += base_low - addon_low;
2777 else if (base_low < addon_low) {
2778 res += interval + base_low - addon_low;
2779 res += (1 << 24);
2780 } else
2781 res += (1 << 24);
2782
2783 return cpu_to_le32(res);
2784}
2785
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002786static int iwl3945_get_measurement(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07002787 struct ieee80211_measurement_params *params,
2788 u8 type)
2789{
Tomas Winkler600c0e12008-12-19 10:37:04 +08002790 struct iwl_spectrum_cmd spectrum;
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002791 struct iwl_rx_packet *res;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002792 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07002793 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
2794 .data = (void *)&spectrum,
2795 .meta.flags = CMD_WANT_SKB,
2796 };
2797 u32 add_time = le64_to_cpu(params->start_time);
2798 int rc;
2799 int spectrum_resp_status;
2800 int duration = le16_to_cpu(params->duration);
2801
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002802 if (iwl3945_is_associated(priv))
Zhu Yib481de92007-09-25 17:54:57 -07002803 add_time =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002804 iwl3945_usecs_to_beacons(
Zhu Yib481de92007-09-25 17:54:57 -07002805 le64_to_cpu(params->start_time) - priv->last_tsf,
2806 le16_to_cpu(priv->rxon_timing.beacon_interval));
2807
2808 memset(&spectrum, 0, sizeof(spectrum));
2809
2810 spectrum.channel_count = cpu_to_le16(1);
2811 spectrum.flags =
2812 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
2813 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
2814 cmd.len = sizeof(spectrum);
2815 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
2816
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002817 if (iwl3945_is_associated(priv))
Zhu Yib481de92007-09-25 17:54:57 -07002818 spectrum.start_time =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002819 iwl3945_add_beacon_time(priv->last_beacon_time,
Zhu Yib481de92007-09-25 17:54:57 -07002820 add_time,
2821 le16_to_cpu(priv->rxon_timing.beacon_interval));
2822 else
2823 spectrum.start_time = 0;
2824
2825 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
2826 spectrum.channels[0].channel = params->channel;
2827 spectrum.channels[0].type = type;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002828 if (priv->active39_rxon.flags & RXON_FLG_BAND_24G_MSK)
Zhu Yib481de92007-09-25 17:54:57 -07002829 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
2830 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
2831
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002832 rc = iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07002833 if (rc)
2834 return rc;
2835
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002836 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07002837 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
2838 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
2839 rc = -EIO;
2840 }
2841
2842 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
2843 switch (spectrum_resp_status) {
2844 case 0: /* Command will be handled */
2845 if (res->u.spectrum.id != 0xff) {
Ian Schrambc434dd2007-10-25 17:15:29 +08002846 IWL_DEBUG_INFO("Replaced existing measurement: %d\n",
2847 res->u.spectrum.id);
Zhu Yib481de92007-09-25 17:54:57 -07002848 priv->measurement_status &= ~MEASUREMENT_READY;
2849 }
2850 priv->measurement_status |= MEASUREMENT_ACTIVE;
2851 rc = 0;
2852 break;
2853
2854 case 1: /* Command will not be handled */
2855 rc = -EAGAIN;
2856 break;
2857 }
2858
2859 dev_kfree_skb_any(cmd.meta.u.skb);
2860
2861 return rc;
2862}
2863#endif
2864
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002865static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002866 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002867{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002868 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
2869 struct iwl_alive_resp *palive;
Zhu Yib481de92007-09-25 17:54:57 -07002870 struct delayed_work *pwork;
2871
2872 palive = &pkt->u.alive_frame;
2873
2874 IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
2875 "0x%01X 0x%01X\n",
2876 palive->is_valid, palive->ver_type,
2877 palive->ver_subtype);
2878
2879 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
2880 IWL_DEBUG_INFO("Initialization Alive received.\n");
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002881 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
2882 sizeof(struct iwl_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -07002883 pwork = &priv->init_alive_start;
2884 } else {
2885 IWL_DEBUG_INFO("Runtime Alive received.\n");
2886 memcpy(&priv->card_alive, &pkt->u.alive_frame,
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002887 sizeof(struct iwl_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -07002888 pwork = &priv->alive_start;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002889 iwl3945_disable_events(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002890 }
2891
2892 /* We delay the ALIVE response by 5ms to
2893 * give the HW RF Kill time to activate... */
2894 if (palive->is_valid == UCODE_VALID_OK)
2895 queue_delayed_work(priv->workqueue, pwork,
2896 msecs_to_jiffies(5));
2897 else
2898 IWL_WARNING("uCode did not respond OK.\n");
2899}
2900
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002901static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002902 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002903{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002904 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07002905
2906 IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
2907 return;
2908}
2909
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002910static void iwl3945_rx_reply_error(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002911 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002912{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002913 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07002914
2915 IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
2916 "seq 0x%04X ser 0x%08X\n",
2917 le32_to_cpu(pkt->u.err_resp.error_type),
2918 get_cmd_string(pkt->u.err_resp.cmd_id),
2919 pkt->u.err_resp.cmd_id,
2920 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
2921 le32_to_cpu(pkt->u.err_resp.error_info));
2922}
2923
2924#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
2925
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002926static void iwl3945_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002927{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002928 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002929 struct iwl3945_rxon_cmd *rxon = (void *)&priv->active39_rxon;
Tomas Winkler600c0e12008-12-19 10:37:04 +08002930 struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
Zhu Yib481de92007-09-25 17:54:57 -07002931 IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2932 le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2933 rxon->channel = csa->channel;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08002934 priv->staging39_rxon.channel = csa->channel;
Zhu Yib481de92007-09-25 17:54:57 -07002935}
2936
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002937static void iwl3945_rx_spectrum_measure_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002938 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002939{
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08002940#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002941 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler600c0e12008-12-19 10:37:04 +08002942 struct iwl_spectrum_notification *report = &(pkt->u.spectrum_notif);
Zhu Yib481de92007-09-25 17:54:57 -07002943
2944 if (!report->state) {
2945 IWL_DEBUG(IWL_DL_11H | IWL_DL_INFO,
2946 "Spectrum Measure Notification: Start\n");
2947 return;
2948 }
2949
2950 memcpy(&priv->measure_report, report, sizeof(*report));
2951 priv->measurement_status |= MEASUREMENT_READY;
2952#endif
2953}
2954
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002955static void iwl3945_rx_pm_sleep_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002956 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002957{
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08002958#ifdef CONFIG_IWL3945_DEBUG
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002959 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler600c0e12008-12-19 10:37:04 +08002960 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
Zhu Yib481de92007-09-25 17:54:57 -07002961 IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2962 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2963#endif
2964}
2965
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002966static void iwl3945_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08002967 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07002968{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08002969 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07002970 IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2971 "notification for %s:\n",
2972 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08002973 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw,
2974 le32_to_cpu(pkt->len));
Zhu Yib481de92007-09-25 17:54:57 -07002975}
2976
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002977static void iwl3945_bg_beacon_update(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -07002978{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08002979 struct iwl_priv *priv =
2980 container_of(work, struct iwl_priv, beacon_update);
Zhu Yib481de92007-09-25 17:54:57 -07002981 struct sk_buff *beacon;
2982
2983 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
Johannes Berge039fa42008-05-15 12:55:29 +02002984 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
Zhu Yib481de92007-09-25 17:54:57 -07002985
2986 if (!beacon) {
2987 IWL_ERROR("update beacon failed\n");
2988 return;
2989 }
2990
2991 mutex_lock(&priv->mutex);
2992 /* new beacon skb is allocated every time; dispose previous.*/
2993 if (priv->ibss_beacon)
2994 dev_kfree_skb(priv->ibss_beacon);
2995
2996 priv->ibss_beacon = beacon;
2997 mutex_unlock(&priv->mutex);
2998
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08002999 iwl3945_send_beacon_cmd(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003000}
3001
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003002static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003003 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003004{
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08003005#ifdef CONFIG_IWL3945_DEBUG
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003006 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003007 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
Zhu Yib481de92007-09-25 17:54:57 -07003008 u8 rate = beacon->beacon_notify_hdr.rate;
3009
3010 IWL_DEBUG_RX("beacon status %x retries %d iss %d "
3011 "tsf %d %d rate %d\n",
3012 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
3013 beacon->beacon_notify_hdr.failure_frame,
3014 le32_to_cpu(beacon->ibss_mgr_status),
3015 le32_to_cpu(beacon->high_tsf),
3016 le32_to_cpu(beacon->low_tsf), rate);
3017#endif
3018
Johannes Berg05c914f2008-09-11 00:01:58 +02003019 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
Zhu Yib481de92007-09-25 17:54:57 -07003020 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
3021 queue_work(priv->workqueue, &priv->beacon_update);
3022}
3023
3024/* Service response to REPLY_SCAN_CMD (0x80) */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003025static void iwl3945_rx_reply_scan(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003026 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003027{
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08003028#ifdef CONFIG_IWL3945_DEBUG
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003029 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler4c897252008-12-19 10:37:05 +08003030 struct iwl_scanreq_notification *notif =
3031 (struct iwl_scanreq_notification *)pkt->u.raw;
Zhu Yib481de92007-09-25 17:54:57 -07003032
3033 IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
3034#endif
3035}
3036
3037/* Service SCAN_START_NOTIFICATION (0x82) */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003038static void iwl3945_rx_scan_start_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003039 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003040{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003041 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler4c897252008-12-19 10:37:05 +08003042 struct iwl_scanstart_notification *notif =
3043 (struct iwl_scanstart_notification *)pkt->u.raw;
Zhu Yib481de92007-09-25 17:54:57 -07003044 priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
3045 IWL_DEBUG_SCAN("Scan start: "
3046 "%d [802.11%s] "
3047 "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
3048 notif->channel,
3049 notif->band ? "bg" : "a",
3050 notif->tsf_high,
3051 notif->tsf_low, notif->status, notif->beacon_timer);
3052}
3053
3054/* Service SCAN_RESULTS_NOTIFICATION (0x83) */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003055static void iwl3945_rx_scan_results_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003056 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003057{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003058 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler4c897252008-12-19 10:37:05 +08003059 struct iwl_scanresults_notification *notif =
3060 (struct iwl_scanresults_notification *)pkt->u.raw;
Zhu Yib481de92007-09-25 17:54:57 -07003061
3062 IWL_DEBUG_SCAN("Scan ch.res: "
3063 "%d [802.11%s] "
3064 "(TSF: 0x%08X:%08X) - %d "
3065 "elapsed=%lu usec (%dms since last)\n",
3066 notif->channel,
3067 notif->band ? "bg" : "a",
3068 le32_to_cpu(notif->tsf_high),
3069 le32_to_cpu(notif->tsf_low),
3070 le32_to_cpu(notif->statistics[0]),
3071 le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
3072 jiffies_to_msecs(elapsed_jiffies
3073 (priv->last_scan_jiffies, jiffies)));
3074
3075 priv->last_scan_jiffies = jiffies;
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08003076 priv->next_scan_jiffies = 0;
Zhu Yib481de92007-09-25 17:54:57 -07003077}
3078
3079/* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003080static void iwl3945_rx_scan_complete_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003081 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003082{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003083 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Tomas Winkler4c897252008-12-19 10:37:05 +08003084 struct iwl_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
Zhu Yib481de92007-09-25 17:54:57 -07003085
3086 IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
3087 scan_notif->scanned_channels,
3088 scan_notif->tsf_low,
3089 scan_notif->tsf_high, scan_notif->status);
3090
3091 /* The HW is no longer scanning */
3092 clear_bit(STATUS_SCAN_HW, &priv->status);
3093
3094 /* The scan completion notification came in, so kill that timer... */
3095 cancel_delayed_work(&priv->scan_check);
3096
3097 IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
Ron Rindjunsky66b50042008-06-25 16:46:31 +08003098 (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) ?
3099 "2.4" : "5.2",
Zhu Yib481de92007-09-25 17:54:57 -07003100 jiffies_to_msecs(elapsed_jiffies
3101 (priv->scan_pass_start, jiffies)));
3102
Ron Rindjunsky66b50042008-06-25 16:46:31 +08003103 /* Remove this scanned band from the list of pending
3104 * bands to scan, band G precedes A in order of scanning
3105 * as seen in iwl3945_bg_request_scan */
3106 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ))
3107 priv->scan_bands &= ~BIT(IEEE80211_BAND_2GHZ);
3108 else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ))
3109 priv->scan_bands &= ~BIT(IEEE80211_BAND_5GHZ);
Zhu Yib481de92007-09-25 17:54:57 -07003110
3111 /* If a request to abort was given, or the scan did not succeed
3112 * then we reset the scan state machine and terminate,
3113 * re-queuing another scan if one has been requested */
3114 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3115 IWL_DEBUG_INFO("Aborted scan completed.\n");
3116 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
3117 } else {
3118 /* If there are more bands on this scan pass reschedule */
3119 if (priv->scan_bands > 0)
3120 goto reschedule;
3121 }
3122
3123 priv->last_scan_jiffies = jiffies;
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08003124 priv->next_scan_jiffies = 0;
Zhu Yib481de92007-09-25 17:54:57 -07003125 IWL_DEBUG_INFO("Setting scan to off\n");
3126
3127 clear_bit(STATUS_SCANNING, &priv->status);
3128
3129 IWL_DEBUG_INFO("Scan took %dms\n",
3130 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
3131
3132 queue_work(priv->workqueue, &priv->scan_completed);
3133
3134 return;
3135
3136reschedule:
3137 priv->scan_pass_start = jiffies;
3138 queue_work(priv->workqueue, &priv->request_scan);
3139}
3140
3141/* Handle notification from uCode that card's power state is changing
3142 * due to software, hardware, or critical temperature RFKILL */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003143static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003144 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003145{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003146 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07003147 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
3148 unsigned long status = priv->status;
3149
3150 IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
3151 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
3152 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
3153
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003154 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Zhu Yib481de92007-09-25 17:54:57 -07003155 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3156
3157 if (flags & HW_CARD_DISABLED)
3158 set_bit(STATUS_RF_KILL_HW, &priv->status);
3159 else
3160 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3161
3162
3163 if (flags & SW_CARD_DISABLED)
3164 set_bit(STATUS_RF_KILL_SW, &priv->status);
3165 else
3166 clear_bit(STATUS_RF_KILL_SW, &priv->status);
3167
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003168 iwl3945_scan_cancel(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003169
3170 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
3171 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
3172 (test_bit(STATUS_RF_KILL_SW, &status) !=
3173 test_bit(STATUS_RF_KILL_SW, &priv->status)))
3174 queue_work(priv->workqueue, &priv->rf_kill);
3175 else
3176 wake_up_interruptible(&priv->wait_command_queue);
3177}
3178
3179/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003180 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
Zhu Yib481de92007-09-25 17:54:57 -07003181 *
3182 * Setup the RX handlers for each of the reply types sent from the uCode
3183 * to the host.
3184 *
3185 * This function chains into the hardware specific files for them to setup
3186 * any hardware specific handlers as well.
3187 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003188static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003189{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003190 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
3191 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
3192 priv->rx_handlers[REPLY_ERROR] = iwl3945_rx_reply_error;
3193 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl3945_rx_csa;
Zhu Yib481de92007-09-25 17:54:57 -07003194 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003195 iwl3945_rx_spectrum_measure_notif;
3196 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl3945_rx_pm_sleep_notif;
Zhu Yib481de92007-09-25 17:54:57 -07003197 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003198 iwl3945_rx_pm_debug_statistics_notif;
3199 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
Zhu Yib481de92007-09-25 17:54:57 -07003200
Ben Cahill9fbab512007-11-29 11:09:47 +08003201 /*
3202 * The same handler is used for both the REPLY to a discrete
3203 * statistics request from the host as well as for the periodic
3204 * statistics notifications (after received beacons) from the uCode.
Zhu Yib481de92007-09-25 17:54:57 -07003205 */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003206 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
3207 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
Zhu Yib481de92007-09-25 17:54:57 -07003208
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003209 priv->rx_handlers[REPLY_SCAN_CMD] = iwl3945_rx_reply_scan;
3210 priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl3945_rx_scan_start_notif;
Zhu Yib481de92007-09-25 17:54:57 -07003211 priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003212 iwl3945_rx_scan_results_notif;
Zhu Yib481de92007-09-25 17:54:57 -07003213 priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003214 iwl3945_rx_scan_complete_notif;
3215 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
Zhu Yib481de92007-09-25 17:54:57 -07003216
Ben Cahill9fbab512007-11-29 11:09:47 +08003217 /* Set up hardware specific Rx handlers */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003218 iwl3945_hw_rx_handler_setup(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003219}
3220
3221/**
Tomas Winkler91c066f2008-03-06 17:36:55 -08003222 * iwl3945_cmd_queue_reclaim - Reclaim CMD queue entries
3223 * When FW advances 'R' index, all entries between old and new 'R' index
3224 * need to be reclaimed.
3225 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003226static void iwl3945_cmd_queue_reclaim(struct iwl_priv *priv,
Tomas Winkler91c066f2008-03-06 17:36:55 -08003227 int txq_id, int index)
3228{
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08003229 struct iwl3945_tx_queue *txq = &priv->txq39[txq_id];
Samuel Ortizd20b3c62008-12-19 10:37:15 +08003230 struct iwl_queue *q = &txq->q;
Tomas Winkler91c066f2008-03-06 17:36:55 -08003231 int nfreed = 0;
3232
3233 if ((index >= q->n_bd) || (iwl3945_x2_queue_used(q, index) == 0)) {
3234 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
3235 "is out of range [0-%d] %d %d.\n", txq_id,
3236 index, q->n_bd, q->write_ptr, q->read_ptr);
3237 return;
3238 }
3239
3240 for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
3241 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
3242 if (nfreed > 1) {
3243 IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
3244 q->write_ptr, q->read_ptr);
3245 queue_work(priv->workqueue, &priv->restart);
3246 break;
3247 }
3248 nfreed++;
3249 }
3250}
3251
3252
3253/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003254 * iwl3945_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
Zhu Yib481de92007-09-25 17:54:57 -07003255 * @rxb: Rx buffer to reclaim
3256 *
3257 * If an Rx buffer has an async callback associated with it the callback
3258 * will be executed. The attached skb (if present) will only be freed
3259 * if the callback returns 1
3260 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003261static void iwl3945_tx_cmd_complete(struct iwl_priv *priv,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003262 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -07003263{
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003264 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07003265 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
3266 int txq_id = SEQ_TO_QUEUE(sequence);
3267 int index = SEQ_TO_INDEX(sequence);
Tomas Winkler600c0e12008-12-19 10:37:04 +08003268 int huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
Zhu Yib481de92007-09-25 17:54:57 -07003269 int cmd_index;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003270 struct iwl3945_cmd *cmd;
Zhu Yib481de92007-09-25 17:54:57 -07003271
Zhu Yib481de92007-09-25 17:54:57 -07003272 BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
3273
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08003274 cmd_index = get_cmd_index(&priv->txq39[IWL_CMD_QUEUE_NUM].q, index, huge);
3275 cmd = &priv->txq39[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
Zhu Yib481de92007-09-25 17:54:57 -07003276
3277 /* Input error checking is done when commands are added to queue. */
3278 if (cmd->meta.flags & CMD_WANT_SKB) {
3279 cmd->meta.source->u.skb = rxb->skb;
3280 rxb->skb = NULL;
3281 } else if (cmd->meta.u.callback &&
3282 !cmd->meta.u.callback(priv, cmd, rxb->skb))
3283 rxb->skb = NULL;
3284
Tomas Winkler91c066f2008-03-06 17:36:55 -08003285 iwl3945_cmd_queue_reclaim(priv, txq_id, index);
Zhu Yib481de92007-09-25 17:54:57 -07003286
3287 if (!(cmd->meta.flags & CMD_ASYNC)) {
3288 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
3289 wake_up_interruptible(&priv->wait_command_queue);
3290 }
3291}
3292
3293/************************** RX-FUNCTIONS ****************************/
3294/*
3295 * Rx theory of operation
3296 *
3297 * The host allocates 32 DMA target addresses and passes the host address
3298 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
3299 * 0 to 31
3300 *
3301 * Rx Queue Indexes
3302 * The host/firmware share two index registers for managing the Rx buffers.
3303 *
3304 * The READ index maps to the first position that the firmware may be writing
3305 * to -- the driver can read up to (but not including) this position and get
3306 * good data.
3307 * The READ index is managed by the firmware once the card is enabled.
3308 *
3309 * The WRITE index maps to the last position the driver has read from -- the
3310 * position preceding WRITE is the last slot the firmware can place a packet.
3311 *
3312 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
3313 * WRITE = READ.
3314 *
Ben Cahill9fbab512007-11-29 11:09:47 +08003315 * During initialization, the host sets up the READ queue position to the first
Zhu Yib481de92007-09-25 17:54:57 -07003316 * INDEX position, and WRITE to the last (READ - 1 wrapped)
3317 *
Ben Cahill9fbab512007-11-29 11:09:47 +08003318 * When the firmware places a packet in a buffer, it will advance the READ index
Zhu Yib481de92007-09-25 17:54:57 -07003319 * and fire the RX interrupt. The driver can then query the READ index and
3320 * process as many packets as possible, moving the WRITE index forward as it
3321 * resets the Rx queue buffers with new memory.
3322 *
3323 * The management in the driver is as follows:
3324 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
3325 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
Ian Schram01ebd062007-10-25 17:15:22 +08003326 * to replenish the iwl->rxq->rx_free.
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003327 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
Zhu Yib481de92007-09-25 17:54:57 -07003328 * iwl->rxq is replenished and the READ INDEX is updated (updating the
3329 * 'processed' and 'read' driver indexes as well)
3330 * + A received packet is processed and handed to the kernel network stack,
3331 * detached from the iwl->rxq. The driver 'processed' index is updated.
3332 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
3333 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
3334 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
3335 * were enough free buffers and RX_STALLED is set it is cleared.
3336 *
3337 *
3338 * Driver sequence:
3339 *
Ben Cahill9fbab512007-11-29 11:09:47 +08003340 * iwl3945_rx_queue_alloc() Allocates rx_free
3341 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003342 * iwl3945_rx_queue_restock
Ben Cahill9fbab512007-11-29 11:09:47 +08003343 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
Zhu Yib481de92007-09-25 17:54:57 -07003344 * queue, updates firmware pointers, and updates
3345 * the WRITE index. If insufficient rx_free buffers
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003346 * are available, schedules iwl3945_rx_replenish
Zhu Yib481de92007-09-25 17:54:57 -07003347 *
3348 * -- enable interrupts --
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003349 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
Zhu Yib481de92007-09-25 17:54:57 -07003350 * READ INDEX, detaching the SKB from the pool.
3351 * Moves the packet buffer from queue to rx_used.
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003352 * Calls iwl3945_rx_queue_restock to refill any empty
Zhu Yib481de92007-09-25 17:54:57 -07003353 * slots.
3354 * ...
3355 *
3356 */
3357
3358/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003359 * iwl3945_rx_queue_space - Return number of free slots available in queue.
Zhu Yib481de92007-09-25 17:54:57 -07003360 */
Abhijeet Kolekarcc2f3622008-12-19 10:37:25 +08003361static int iwl3945_rx_queue_space(const struct iwl_rx_queue *q)
Zhu Yib481de92007-09-25 17:54:57 -07003362{
3363 int s = q->read - q->write;
3364 if (s <= 0)
3365 s += RX_QUEUE_SIZE;
3366 /* keep some buffer to not confuse full and empty queue */
3367 s -= 2;
3368 if (s < 0)
3369 s = 0;
3370 return s;
3371}
3372
3373/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003374 * iwl3945_rx_queue_update_write_ptr - Update the write pointer for the RX queue
Zhu Yib481de92007-09-25 17:54:57 -07003375 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003376int iwl3945_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
Zhu Yib481de92007-09-25 17:54:57 -07003377{
3378 u32 reg = 0;
3379 int rc = 0;
3380 unsigned long flags;
3381
3382 spin_lock_irqsave(&q->lock, flags);
3383
3384 if (q->need_update == 0)
3385 goto exit_unlock;
3386
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003387 /* If power-saving is in use, make sure device is awake */
Zhu Yib481de92007-09-25 17:54:57 -07003388 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003389 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
Zhu Yib481de92007-09-25 17:54:57 -07003390
3391 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003392 iwl_set_bit(priv, CSR_GP_CNTRL,
Zhu Yib481de92007-09-25 17:54:57 -07003393 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3394 goto exit_unlock;
3395 }
3396
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003397 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003398 if (rc)
3399 goto exit_unlock;
3400
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003401 /* Device expects a multiple of 8 */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003402 iwl_write_direct32(priv, FH39_RSCSR_CHNL0_WPTR,
Zhu Yib481de92007-09-25 17:54:57 -07003403 q->write & ~0x7);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003404 iwl_release_nic_access(priv);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003405
3406 /* Else device is assumed to be awake */
Zhu Yib481de92007-09-25 17:54:57 -07003407 } else
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003408 /* Device expects a multiple of 8 */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003409 iwl_write32(priv, FH39_RSCSR_CHNL0_WPTR, q->write & ~0x7);
Zhu Yib481de92007-09-25 17:54:57 -07003410
3411
3412 q->need_update = 0;
3413
3414 exit_unlock:
3415 spin_unlock_irqrestore(&q->lock, flags);
3416 return rc;
3417}
3418
3419/**
Ben Cahill9fbab512007-11-29 11:09:47 +08003420 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
Zhu Yib481de92007-09-25 17:54:57 -07003421 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003422static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07003423 dma_addr_t dma_addr)
3424{
3425 return cpu_to_le32((u32)dma_addr);
3426}
3427
3428/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003429 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
Zhu Yib481de92007-09-25 17:54:57 -07003430 *
Ben Cahill9fbab512007-11-29 11:09:47 +08003431 * If there are slots in the RX queue that need to be restocked,
Zhu Yib481de92007-09-25 17:54:57 -07003432 * and we have free pre-allocated buffers, fill the ranks as much
Ben Cahill9fbab512007-11-29 11:09:47 +08003433 * as we can, pulling from rx_free.
Zhu Yib481de92007-09-25 17:54:57 -07003434 *
3435 * This moves the 'write' index forward to catch up with 'processed', and
3436 * also updates the memory address in the firmware to reference the new
3437 * target buffer.
3438 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003439static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003440{
Abhijeet Kolekarcc2f3622008-12-19 10:37:25 +08003441 struct iwl_rx_queue *rxq = &priv->rxq;
Zhu Yib481de92007-09-25 17:54:57 -07003442 struct list_head *element;
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003443 struct iwl_rx_mem_buffer *rxb;
Zhu Yib481de92007-09-25 17:54:57 -07003444 unsigned long flags;
3445 int write, rc;
3446
3447 spin_lock_irqsave(&rxq->lock, flags);
3448 write = rxq->write & ~0x7;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003449 while ((iwl3945_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003450 /* Get next free Rx buffer, remove from free list */
Zhu Yib481de92007-09-25 17:54:57 -07003451 element = rxq->rx_free.next;
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003452 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
Zhu Yib481de92007-09-25 17:54:57 -07003453 list_del(element);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003454
3455 /* Point to Rx buffer via next RBD in circular buffer */
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003456 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
Zhu Yib481de92007-09-25 17:54:57 -07003457 rxq->queue[rxq->write] = rxb;
3458 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
3459 rxq->free_count--;
3460 }
3461 spin_unlock_irqrestore(&rxq->lock, flags);
3462 /* If the pre-allocated buffer pool is dropping low, schedule to
3463 * refill it */
3464 if (rxq->free_count <= RX_LOW_WATERMARK)
3465 queue_work(priv->workqueue, &priv->rx_replenish);
3466
3467
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003468 /* If we've added more space for the firmware to place data, tell it.
3469 * Increment device's write pointer in multiples of 8. */
Zhu Yib481de92007-09-25 17:54:57 -07003470 if ((write != (rxq->write & ~0x7))
3471 || (abs(rxq->write - rxq->read) > 7)) {
3472 spin_lock_irqsave(&rxq->lock, flags);
3473 rxq->need_update = 1;
3474 spin_unlock_irqrestore(&rxq->lock, flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003475 rc = iwl3945_rx_queue_update_write_ptr(priv, rxq);
Zhu Yib481de92007-09-25 17:54:57 -07003476 if (rc)
3477 return rc;
3478 }
3479
3480 return 0;
3481}
3482
3483/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003484 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
Zhu Yib481de92007-09-25 17:54:57 -07003485 *
3486 * When moving to rx_free an SKB is allocated for the slot.
3487 *
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003488 * Also restock the Rx queue via iwl3945_rx_queue_restock.
Ian Schram01ebd062007-10-25 17:15:22 +08003489 * This is called as a scheduled work item (except for during initialization)
Zhu Yib481de92007-09-25 17:54:57 -07003490 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003491static void iwl3945_rx_allocate(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003492{
Abhijeet Kolekarcc2f3622008-12-19 10:37:25 +08003493 struct iwl_rx_queue *rxq = &priv->rxq;
Zhu Yib481de92007-09-25 17:54:57 -07003494 struct list_head *element;
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003495 struct iwl_rx_mem_buffer *rxb;
Zhu Yib481de92007-09-25 17:54:57 -07003496 unsigned long flags;
3497 spin_lock_irqsave(&rxq->lock, flags);
3498 while (!list_empty(&rxq->rx_used)) {
3499 element = rxq->rx_used.next;
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003500 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003501
3502 /* Alloc a new receive buffer */
Zhu Yib481de92007-09-25 17:54:57 -07003503 rxb->skb =
3504 alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
3505 if (!rxb->skb) {
3506 if (net_ratelimit())
Tomas Winkler978785a2008-12-19 10:37:31 +08003507 IWL_CRIT(priv, ": Can not allocate SKB buffers\n");
Zhu Yib481de92007-09-25 17:54:57 -07003508 /* We don't reschedule replenish work here -- we will
3509 * call the restock method and if it still needs
3510 * more buffers it will schedule replenish */
3511 break;
3512 }
Zhu Yi12342c42007-12-20 11:27:32 +08003513
3514 /* If radiotap head is required, reserve some headroom here.
3515 * The physical head count is a variable rx_stats->phy_count.
3516 * We reserve 4 bytes here. Plus these extra bytes, the
3517 * headroom of the physical head should be enough for the
3518 * radiotap head that iwl3945 supported. See iwl3945_rt.
3519 */
3520 skb_reserve(rxb->skb, 4);
3521
Zhu Yib481de92007-09-25 17:54:57 -07003522 priv->alloc_rxb_skb++;
3523 list_del(element);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003524
3525 /* Get physical address of RB/SKB */
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003526 rxb->real_dma_addr =
Zhu Yib481de92007-09-25 17:54:57 -07003527 pci_map_single(priv->pci_dev, rxb->skb->data,
3528 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3529 list_add_tail(&rxb->list, &rxq->rx_free);
3530 rxq->free_count++;
3531 }
3532 spin_unlock_irqrestore(&rxq->lock, flags);
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003533}
3534
3535/*
3536 * this should be called while priv->lock is locked
3537 */
Tomas Winkler4fd1f842007-12-05 20:59:58 +02003538static void __iwl3945_rx_replenish(void *data)
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003539{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003540 struct iwl_priv *priv = data;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003541
3542 iwl3945_rx_allocate(priv);
3543 iwl3945_rx_queue_restock(priv);
3544}
3545
3546
3547void iwl3945_rx_replenish(void *data)
3548{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003549 struct iwl_priv *priv = data;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003550 unsigned long flags;
3551
3552 iwl3945_rx_allocate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003553
3554 spin_lock_irqsave(&priv->lock, flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003555 iwl3945_rx_queue_restock(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003556 spin_unlock_irqrestore(&priv->lock, flags);
3557}
3558
3559/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
Ben Cahill9fbab512007-11-29 11:09:47 +08003560 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
Zhu Yib481de92007-09-25 17:54:57 -07003561 * This free routine walks the list of POOL entries and if SKB is set to
3562 * non NULL it is unmapped and freed
3563 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003564static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
Zhu Yib481de92007-09-25 17:54:57 -07003565{
3566 int i;
3567 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
3568 if (rxq->pool[i].skb != NULL) {
3569 pci_unmap_single(priv->pci_dev,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003570 rxq->pool[i].real_dma_addr,
Zhu Yib481de92007-09-25 17:54:57 -07003571 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3572 dev_kfree_skb(rxq->pool[i].skb);
3573 }
3574 }
3575
3576 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
3577 rxq->dma_addr);
3578 rxq->bd = NULL;
3579}
3580
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003581int iwl3945_rx_queue_alloc(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003582{
Abhijeet Kolekarcc2f3622008-12-19 10:37:25 +08003583 struct iwl_rx_queue *rxq = &priv->rxq;
Zhu Yib481de92007-09-25 17:54:57 -07003584 struct pci_dev *dev = priv->pci_dev;
3585 int i;
3586
3587 spin_lock_init(&rxq->lock);
3588 INIT_LIST_HEAD(&rxq->rx_free);
3589 INIT_LIST_HEAD(&rxq->rx_used);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003590
3591 /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */
Zhu Yib481de92007-09-25 17:54:57 -07003592 rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr);
3593 if (!rxq->bd)
3594 return -ENOMEM;
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003595
Zhu Yib481de92007-09-25 17:54:57 -07003596 /* Fill the rx_used queue with _all_ of the Rx buffers */
3597 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++)
3598 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003599
Zhu Yib481de92007-09-25 17:54:57 -07003600 /* Set us so that we have processed and used all buffers, but have
3601 * not restocked the Rx queue with fresh buffers */
3602 rxq->read = rxq->write = 0;
3603 rxq->free_count = 0;
3604 rxq->need_update = 0;
3605 return 0;
3606}
3607
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003608void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
Zhu Yib481de92007-09-25 17:54:57 -07003609{
3610 unsigned long flags;
3611 int i;
3612 spin_lock_irqsave(&rxq->lock, flags);
3613 INIT_LIST_HEAD(&rxq->rx_free);
3614 INIT_LIST_HEAD(&rxq->rx_used);
3615 /* Fill the rx_used queue with _all_ of the Rx buffers */
3616 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
3617 /* In the reset function, these buffers may have been allocated
3618 * to an SKB, so we need to unmap and free potential storage */
3619 if (rxq->pool[i].skb != NULL) {
3620 pci_unmap_single(priv->pci_dev,
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003621 rxq->pool[i].real_dma_addr,
Zhu Yib481de92007-09-25 17:54:57 -07003622 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3623 priv->alloc_rxb_skb--;
3624 dev_kfree_skb(rxq->pool[i].skb);
3625 rxq->pool[i].skb = NULL;
3626 }
3627 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
3628 }
3629
3630 /* Set us so that we have processed and used all buffers, but have
3631 * not restocked the Rx queue with fresh buffers */
3632 rxq->read = rxq->write = 0;
3633 rxq->free_count = 0;
3634 spin_unlock_irqrestore(&rxq->lock, flags);
3635}
3636
3637/* Convert linear signal-to-noise ratio into dB */
3638static u8 ratio2dB[100] = {
3639/* 0 1 2 3 4 5 6 7 8 9 */
3640 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
3641 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
3642 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
3643 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
3644 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
3645 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
3646 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
3647 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
3648 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
3649 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
3650};
3651
3652/* Calculates a relative dB value from a ratio of linear
3653 * (i.e. not dB) signal levels.
3654 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003655int iwl3945_calc_db_from_ratio(int sig_ratio)
Zhu Yib481de92007-09-25 17:54:57 -07003656{
Adrian Bunk221c80c2008-02-02 23:19:01 +02003657 /* 1000:1 or higher just report as 60 dB */
3658 if (sig_ratio >= 1000)
Zhu Yib481de92007-09-25 17:54:57 -07003659 return 60;
3660
Adrian Bunk221c80c2008-02-02 23:19:01 +02003661 /* 100:1 or higher, divide by 10 and use table,
Zhu Yib481de92007-09-25 17:54:57 -07003662 * add 20 dB to make up for divide by 10 */
Adrian Bunk221c80c2008-02-02 23:19:01 +02003663 if (sig_ratio >= 100)
Tomas Winkler3ac7f142008-07-21 02:40:14 +03003664 return 20 + (int)ratio2dB[sig_ratio/10];
Zhu Yib481de92007-09-25 17:54:57 -07003665
3666 /* We shouldn't see this */
3667 if (sig_ratio < 1)
3668 return 0;
3669
3670 /* Use table for ratios 1:1 - 99:1 */
3671 return (int)ratio2dB[sig_ratio];
3672}
3673
3674#define PERFECT_RSSI (-20) /* dBm */
3675#define WORST_RSSI (-95) /* dBm */
3676#define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
3677
3678/* Calculate an indication of rx signal quality (a percentage, not dBm!).
3679 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
3680 * about formulas used below. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003681int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
Zhu Yib481de92007-09-25 17:54:57 -07003682{
3683 int sig_qual;
3684 int degradation = PERFECT_RSSI - rssi_dbm;
3685
3686 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
3687 * as indicator; formula is (signal dbm - noise dbm).
3688 * SNR at or above 40 is a great signal (100%).
3689 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
3690 * Weakest usable signal is usually 10 - 15 dB SNR. */
3691 if (noise_dbm) {
3692 if (rssi_dbm - noise_dbm >= 40)
3693 return 100;
3694 else if (rssi_dbm < noise_dbm)
3695 return 0;
3696 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
3697
3698 /* Else use just the signal level.
3699 * This formula is a least squares fit of data points collected and
3700 * compared with a reference system that had a percentage (%) display
3701 * for signal quality. */
3702 } else
3703 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
3704 (15 * RSSI_RANGE + 62 * degradation)) /
3705 (RSSI_RANGE * RSSI_RANGE);
3706
3707 if (sig_qual > 100)
3708 sig_qual = 100;
3709 else if (sig_qual < 1)
3710 sig_qual = 0;
3711
3712 return sig_qual;
3713}
3714
3715/**
Ben Cahill9fbab512007-11-29 11:09:47 +08003716 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
Zhu Yib481de92007-09-25 17:54:57 -07003717 *
3718 * Uses the priv->rx_handlers callback function array to invoke
3719 * the appropriate handlers, including command responses,
3720 * frame-received notifications, and other notifications.
3721 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003722static void iwl3945_rx_handle(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003723{
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003724 struct iwl_rx_mem_buffer *rxb;
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003725 struct iwl_rx_packet *pkt;
Abhijeet Kolekarcc2f3622008-12-19 10:37:25 +08003726 struct iwl_rx_queue *rxq = &priv->rxq;
Zhu Yib481de92007-09-25 17:54:57 -07003727 u32 r, i;
3728 int reclaim;
3729 unsigned long flags;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003730 u8 fill_rx = 0;
Mohamed Abbasd68ab682008-02-07 13:16:33 -08003731 u32 count = 8;
Zhu Yib481de92007-09-25 17:54:57 -07003732
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003733 /* uCode's read index (stored in shared DRAM) indicates the last Rx
3734 * buffer that the driver may process (last buffer filled by ucode). */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003735 r = iwl3945_hw_get_rx_read(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003736 i = rxq->read;
3737
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003738 if (iwl3945_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
3739 fill_rx = 1;
Zhu Yib481de92007-09-25 17:54:57 -07003740 /* Rx interrupt, but nothing sent from uCode */
3741 if (i == r)
3742 IWL_DEBUG(IWL_DL_RX | IWL_DL_ISR, "r = %d, i = %d\n", r, i);
3743
3744 while (i != r) {
3745 rxb = rxq->queue[i];
3746
Ben Cahill9fbab512007-11-29 11:09:47 +08003747 /* If an RXB doesn't have a Rx queue slot associated with it,
Zhu Yib481de92007-09-25 17:54:57 -07003748 * then a bug has been introduced in the queue refilling
3749 * routines -- catch it here */
3750 BUG_ON(rxb == NULL);
3751
3752 rxq->queue[i] = NULL;
3753
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003754 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->real_dma_addr,
Zhu Yib481de92007-09-25 17:54:57 -07003755 IWL_RX_BUF_SIZE,
3756 PCI_DMA_FROMDEVICE);
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08003757 pkt = (struct iwl_rx_packet *)rxb->skb->data;
Zhu Yib481de92007-09-25 17:54:57 -07003758
3759 /* Reclaim a command buffer only if this packet is a response
3760 * to a (driver-originated) command.
3761 * If the packet (e.g. Rx frame) originated from uCode,
3762 * there is no command buffer to reclaim.
3763 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
3764 * but apparently a few don't get set; catch them here. */
3765 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
3766 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
3767 (pkt->hdr.cmd != REPLY_TX);
3768
3769 /* Based on type of command response or notification,
3770 * handle those that need handling via function in
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003771 * rx_handlers table. See iwl3945_setup_rx_handlers() */
Zhu Yib481de92007-09-25 17:54:57 -07003772 if (priv->rx_handlers[pkt->hdr.cmd]) {
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08003773 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Zhu Yib481de92007-09-25 17:54:57 -07003774 "r = %d, i = %d, %s, 0x%02x\n", r, i,
3775 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
3776 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
3777 } else {
3778 /* No handling needed */
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08003779 IWL_DEBUG(IWL_DL_HCMD | IWL_DL_RX | IWL_DL_ISR,
Zhu Yib481de92007-09-25 17:54:57 -07003780 "r %d i %d No handler needed for %s, 0x%02x\n",
3781 r, i, get_cmd_string(pkt->hdr.cmd),
3782 pkt->hdr.cmd);
3783 }
3784
3785 if (reclaim) {
Ben Cahill9fbab512007-11-29 11:09:47 +08003786 /* Invoke any callbacks, transfer the skb to caller, and
3787 * fire off the (possibly) blocking iwl3945_send_cmd()
Zhu Yib481de92007-09-25 17:54:57 -07003788 * as we reclaim the driver command queue */
3789 if (rxb && rxb->skb)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003790 iwl3945_tx_cmd_complete(priv, rxb);
Zhu Yib481de92007-09-25 17:54:57 -07003791 else
3792 IWL_WARNING("Claim null rxb?\n");
3793 }
3794
3795 /* For now we just don't re-use anything. We can tweak this
3796 * later to try and re-use notification packets and SKBs that
3797 * fail to Rx correctly */
3798 if (rxb->skb != NULL) {
3799 priv->alloc_rxb_skb--;
3800 dev_kfree_skb_any(rxb->skb);
3801 rxb->skb = NULL;
3802 }
3803
Abhijeet Kolekar6100b582008-12-19 10:37:24 +08003804 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
Zhu Yib481de92007-09-25 17:54:57 -07003805 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
3806 spin_lock_irqsave(&rxq->lock, flags);
3807 list_add_tail(&rxb->list, &priv->rxq.rx_used);
3808 spin_unlock_irqrestore(&rxq->lock, flags);
3809 i = (i + 1) & RX_QUEUE_MASK;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +08003810 /* If there are a lot of unused frames,
3811 * restock the Rx queue so ucode won't assert. */
3812 if (fill_rx) {
3813 count++;
3814 if (count >= 8) {
3815 priv->rxq.read = i;
3816 __iwl3945_rx_replenish(priv);
3817 count = 0;
3818 }
3819 }
Zhu Yib481de92007-09-25 17:54:57 -07003820 }
3821
3822 /* Backtrack one entry */
3823 priv->rxq.read = i;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003824 iwl3945_rx_queue_restock(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003825}
3826
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003827/**
3828 * iwl3945_tx_queue_update_write_ptr - Send new write index to hardware
3829 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003830static int iwl3945_tx_queue_update_write_ptr(struct iwl_priv *priv,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003831 struct iwl3945_tx_queue *txq)
Zhu Yib481de92007-09-25 17:54:57 -07003832{
3833 u32 reg = 0;
3834 int rc = 0;
3835 int txq_id = txq->q.id;
3836
3837 if (txq->need_update == 0)
3838 return rc;
3839
3840 /* if we're trying to save power */
3841 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
3842 /* wake up nic if it's powered down ...
3843 * uCode will wake up, and interrupt us again, so next
3844 * time we'll skip this part. */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003845 reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
Zhu Yib481de92007-09-25 17:54:57 -07003846
3847 if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
3848 IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003849 iwl_set_bit(priv, CSR_GP_CNTRL,
Zhu Yib481de92007-09-25 17:54:57 -07003850 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3851 return rc;
3852 }
3853
3854 /* restore this queue's parameters in nic hardware. */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003855 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003856 if (rc)
3857 return rc;
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003858 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
Tomas Winklerfc4b6852007-10-25 17:15:24 +08003859 txq->q.write_ptr | (txq_id << 8));
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003860 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003861
3862 /* else not in power-save mode, uCode will never sleep when we're
3863 * trying to tx (during RFKILL, we're not trying to tx). */
3864 } else
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003865 iwl_write32(priv, HBUS_TARG_WRPTR,
Tomas Winklerfc4b6852007-10-25 17:15:24 +08003866 txq->q.write_ptr | (txq_id << 8));
Zhu Yib481de92007-09-25 17:54:57 -07003867
3868 txq->need_update = 0;
3869
3870 return rc;
3871}
3872
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08003873#ifdef CONFIG_IWL3945_DEBUG
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003874static void iwl3945_print_rx_config_cmd(struct iwl_priv *priv,
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08003875 struct iwl3945_rxon_cmd *rxon)
Zhu Yib481de92007-09-25 17:54:57 -07003876{
3877 IWL_DEBUG_RADIO("RX CONFIG:\n");
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08003878 iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
Zhu Yib481de92007-09-25 17:54:57 -07003879 IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
3880 IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
3881 IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
3882 le32_to_cpu(rxon->filter_flags));
3883 IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
3884 IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
3885 rxon->ofdm_basic_rates);
3886 IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
Johannes Berge1749612008-10-27 15:59:26 -07003887 IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
3888 IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
Zhu Yib481de92007-09-25 17:54:57 -07003889 IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
3890}
3891#endif
3892
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003893static void iwl3945_enable_interrupts(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003894{
3895 IWL_DEBUG_ISR("Enabling interrupts\n");
3896 set_bit(STATUS_INT_ENABLED, &priv->status);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003897 iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
Zhu Yib481de92007-09-25 17:54:57 -07003898}
3899
Mohamed Abbas0359fac2008-03-28 16:21:08 -07003900
3901/* call this function to flush any scheduled tasklet */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003902static inline void iwl_synchronize_irq(struct iwl_priv *priv)
Mohamed Abbas0359fac2008-03-28 16:21:08 -07003903{
Tomas Winklera96a27f2008-10-23 23:48:56 -07003904 /* wait to make sure we flush pending tasklet*/
Mohamed Abbas0359fac2008-03-28 16:21:08 -07003905 synchronize_irq(priv->pci_dev->irq);
3906 tasklet_kill(&priv->irq_tasklet);
3907}
3908
3909
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003910static inline void iwl3945_disable_interrupts(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003911{
3912 clear_bit(STATUS_INT_ENABLED, &priv->status);
3913
3914 /* disable interrupts from uCode/NIC to host */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003915 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
Zhu Yib481de92007-09-25 17:54:57 -07003916
3917 /* acknowledge/clear/reset any interrupts still pending
3918 * from uCode or flow handler (Rx/Tx DMA) */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003919 iwl_write32(priv, CSR_INT, 0xffffffff);
3920 iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
Zhu Yib481de92007-09-25 17:54:57 -07003921 IWL_DEBUG_ISR("Disabled interrupts\n");
3922}
3923
3924static const char *desc_lookup(int i)
3925{
3926 switch (i) {
3927 case 1:
3928 return "FAIL";
3929 case 2:
3930 return "BAD_PARAM";
3931 case 3:
3932 return "BAD_CHECKSUM";
3933 case 4:
3934 return "NMI_INTERRUPT";
3935 case 5:
3936 return "SYSASSERT";
3937 case 6:
3938 return "FATAL_ERROR";
3939 }
3940
3941 return "UNKNOWN";
3942}
3943
3944#define ERROR_START_OFFSET (1 * sizeof(u32))
3945#define ERROR_ELEM_SIZE (7 * sizeof(u32))
3946
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08003947static void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003948{
3949 u32 i;
3950 u32 desc, time, count, base, data1;
3951 u32 blink1, blink2, ilink1, ilink2;
3952 int rc;
3953
3954 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
3955
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08003956 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Zhu Yib481de92007-09-25 17:54:57 -07003957 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
3958 return;
3959 }
3960
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003961 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003962 if (rc) {
3963 IWL_WARNING("Can not read from adapter at this time.\n");
3964 return;
3965 }
3966
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003967 count = iwl_read_targ_mem(priv, base);
Zhu Yib481de92007-09-25 17:54:57 -07003968
3969 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
3970 IWL_ERROR("Start IWL Error Log Dump:\n");
Tomas Winkler2acae162008-03-02 01:25:59 +02003971 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
Zhu Yib481de92007-09-25 17:54:57 -07003972 }
3973
3974 IWL_ERROR("Desc Time asrtPC blink2 "
3975 "ilink1 nmiPC Line\n");
3976 for (i = ERROR_START_OFFSET;
3977 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
3978 i += ERROR_ELEM_SIZE) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003979 desc = iwl_read_targ_mem(priv, base + i);
Zhu Yib481de92007-09-25 17:54:57 -07003980 time =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003981 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003982 blink1 =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003983 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003984 blink2 =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003985 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003986 ilink1 =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003987 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003988 ilink2 =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003989 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003990 data1 =
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003991 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07003992
3993 IWL_ERROR
3994 ("%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
3995 desc_lookup(desc), desc, time, blink1, blink2,
3996 ilink1, ilink2, data1);
3997 }
3998
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08003999 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004000
4001}
4002
Ben Cahillf58177b2007-11-29 11:09:43 +08004003#define EVENT_START_OFFSET (6 * sizeof(u32))
Zhu Yib481de92007-09-25 17:54:57 -07004004
4005/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004006 * iwl3945_print_event_log - Dump error event log to syslog
Zhu Yib481de92007-09-25 17:54:57 -07004007 *
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004008 * NOTE: Must be called with iwl_grab_nic_access() already obtained!
Zhu Yib481de92007-09-25 17:54:57 -07004009 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004010static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
Zhu Yib481de92007-09-25 17:54:57 -07004011 u32 num_events, u32 mode)
4012{
4013 u32 i;
4014 u32 base; /* SRAM byte address of event log header */
4015 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
4016 u32 ptr; /* SRAM byte address of log data */
4017 u32 ev, time, data; /* event log data */
4018
4019 if (num_events == 0)
4020 return;
4021
4022 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
4023
4024 if (mode == 0)
4025 event_size = 2 * sizeof(u32);
4026 else
4027 event_size = 3 * sizeof(u32);
4028
4029 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
4030
4031 /* "time" is actually "data" for mode 0 (no timestamp).
4032 * place event id # at far right for easier visual parsing. */
4033 for (i = 0; i < num_events; i++) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004034 ev = iwl_read_targ_mem(priv, ptr);
Zhu Yib481de92007-09-25 17:54:57 -07004035 ptr += sizeof(u32);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004036 time = iwl_read_targ_mem(priv, ptr);
Zhu Yib481de92007-09-25 17:54:57 -07004037 ptr += sizeof(u32);
4038 if (mode == 0)
4039 IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
4040 else {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004041 data = iwl_read_targ_mem(priv, ptr);
Zhu Yib481de92007-09-25 17:54:57 -07004042 ptr += sizeof(u32);
4043 IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
4044 }
4045 }
4046}
4047
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004048static void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004049{
4050 int rc;
4051 u32 base; /* SRAM byte address of event log header */
4052 u32 capacity; /* event log capacity in # entries */
4053 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
4054 u32 num_wraps; /* # times uCode wrapped to top of log */
4055 u32 next_entry; /* index of next entry to be written by uCode */
4056 u32 size; /* # entries that we'll print */
4057
4058 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004059 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
Zhu Yib481de92007-09-25 17:54:57 -07004060 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
4061 return;
4062 }
4063
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004064 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004065 if (rc) {
4066 IWL_WARNING("Can not read from adapter at this time.\n");
4067 return;
4068 }
4069
4070 /* event log header */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004071 capacity = iwl_read_targ_mem(priv, base);
4072 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
4073 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
4074 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
Zhu Yib481de92007-09-25 17:54:57 -07004075
4076 size = num_wraps ? capacity : next_entry;
4077
4078 /* bail out if nothing in log */
4079 if (size == 0) {
Zhu Yi583fab32007-09-27 11:27:30 +08004080 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004081 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004082 return;
4083 }
4084
Zhu Yi583fab32007-09-27 11:27:30 +08004085 IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
Zhu Yib481de92007-09-25 17:54:57 -07004086 size, num_wraps);
4087
4088 /* if uCode has wrapped back to top of log, start at the oldest entry,
4089 * i.e the next one that uCode would fill. */
4090 if (num_wraps)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004091 iwl3945_print_event_log(priv, next_entry,
Zhu Yib481de92007-09-25 17:54:57 -07004092 capacity - next_entry, mode);
4093
4094 /* (then/else) start at top of log */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004095 iwl3945_print_event_log(priv, 0, next_entry, mode);
Zhu Yib481de92007-09-25 17:54:57 -07004096
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004097 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004098}
4099
4100/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004101 * iwl3945_irq_handle_error - called for HW or SW error interrupt from card
Zhu Yib481de92007-09-25 17:54:57 -07004102 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004103static void iwl3945_irq_handle_error(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004104{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004105 /* Set the FW error flag -- cleared on iwl3945_down */
Zhu Yib481de92007-09-25 17:54:57 -07004106 set_bit(STATUS_FW_ERROR, &priv->status);
4107
4108 /* Cancel currently queued command. */
4109 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
4110
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08004111#ifdef CONFIG_IWL3945_DEBUG
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08004112 if (priv->debug_level & IWL_DL_FW_ERRORS) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004113 iwl3945_dump_nic_error_log(priv);
4114 iwl3945_dump_nic_event_log(priv);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004115 iwl3945_print_rx_config_cmd(priv, &priv->staging39_rxon);
Zhu Yib481de92007-09-25 17:54:57 -07004116 }
4117#endif
4118
4119 wake_up_interruptible(&priv->wait_command_queue);
4120
4121 /* Keep the restart process from trying to send host
4122 * commands by clearing the INIT status bit */
4123 clear_bit(STATUS_READY, &priv->status);
4124
4125 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
4126 IWL_DEBUG(IWL_DL_INFO | IWL_DL_FW_ERRORS,
4127 "Restarting adapter due to uCode error.\n");
4128
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004129 if (iwl3945_is_associated(priv)) {
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004130 memcpy(&priv->recovery39_rxon, &priv->active39_rxon,
4131 sizeof(priv->recovery39_rxon));
Zhu Yib481de92007-09-25 17:54:57 -07004132 priv->error_recovering = 1;
4133 }
4134 queue_work(priv->workqueue, &priv->restart);
4135 }
4136}
4137
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004138static void iwl3945_error_recovery(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004139{
4140 unsigned long flags;
4141
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004142 memcpy(&priv->staging39_rxon, &priv->recovery39_rxon,
4143 sizeof(priv->staging39_rxon));
4144 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004145 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004146
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004147 iwl3945_add_station(priv, priv->bssid, 1, 0);
Zhu Yib481de92007-09-25 17:54:57 -07004148
4149 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004150 priv->assoc_id = le16_to_cpu(priv->staging39_rxon.assoc_id);
Zhu Yib481de92007-09-25 17:54:57 -07004151 priv->error_recovering = 0;
4152 spin_unlock_irqrestore(&priv->lock, flags);
4153}
4154
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004155static void iwl3945_irq_tasklet(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004156{
4157 u32 inta, handled = 0;
4158 u32 inta_fh;
4159 unsigned long flags;
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08004160#ifdef CONFIG_IWL3945_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -07004161 u32 inta_mask;
4162#endif
4163
4164 spin_lock_irqsave(&priv->lock, flags);
4165
4166 /* Ack/clear/reset pending uCode interrupts.
4167 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
4168 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004169 inta = iwl_read32(priv, CSR_INT);
4170 iwl_write32(priv, CSR_INT, inta);
Zhu Yib481de92007-09-25 17:54:57 -07004171
4172 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
4173 * Any new interrupts that happen after this, either while we're
4174 * in this tasklet, or later, will show up in next ISR/tasklet. */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004175 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
4176 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Zhu Yib481de92007-09-25 17:54:57 -07004177
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08004178#ifdef CONFIG_IWL3945_DEBUG
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08004179 if (priv->debug_level & IWL_DL_ISR) {
Ben Cahill9fbab512007-11-29 11:09:47 +08004180 /* just for debug */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004181 inta_mask = iwl_read32(priv, CSR_INT_MASK);
Zhu Yib481de92007-09-25 17:54:57 -07004182 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4183 inta, inta_mask, inta_fh);
4184 }
4185#endif
4186
4187 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
4188 * atomic, make sure that inta covers all the interrupts that
4189 * we've discovered, even if FH interrupt came in just after
4190 * reading CSR_INT. */
Tomas Winkler6f83eaa2008-03-04 18:09:28 -08004191 if (inta_fh & CSR39_FH_INT_RX_MASK)
Zhu Yib481de92007-09-25 17:54:57 -07004192 inta |= CSR_INT_BIT_FH_RX;
Tomas Winkler6f83eaa2008-03-04 18:09:28 -08004193 if (inta_fh & CSR39_FH_INT_TX_MASK)
Zhu Yib481de92007-09-25 17:54:57 -07004194 inta |= CSR_INT_BIT_FH_TX;
4195
4196 /* Now service all interrupt bits discovered above. */
4197 if (inta & CSR_INT_BIT_HW_ERR) {
4198 IWL_ERROR("Microcode HW error detected. Restarting.\n");
4199
4200 /* Tell the device to stop sending interrupts */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004201 iwl3945_disable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004202
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004203 iwl3945_irq_handle_error(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004204
4205 handled |= CSR_INT_BIT_HW_ERR;
4206
4207 spin_unlock_irqrestore(&priv->lock, flags);
4208
4209 return;
4210 }
4211
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08004212#ifdef CONFIG_IWL3945_DEBUG
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08004213 if (priv->debug_level & (IWL_DL_ISR)) {
Zhu Yib481de92007-09-25 17:54:57 -07004214 /* NIC fires this, but we don't use it, redundant with WAKEUP */
Joonwoo Park25c03d82008-01-23 10:15:20 -08004215 if (inta & CSR_INT_BIT_SCD)
4216 IWL_DEBUG_ISR("Scheduler finished to transmit "
4217 "the frame/frames.\n");
Zhu Yib481de92007-09-25 17:54:57 -07004218
4219 /* Alive notification via Rx interrupt will do the real work */
4220 if (inta & CSR_INT_BIT_ALIVE)
4221 IWL_DEBUG_ISR("Alive interrupt\n");
4222 }
4223#endif
4224 /* Safely ignore these bits for debug checks below */
Joonwoo Park25c03d82008-01-23 10:15:20 -08004225 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Zhu Yib481de92007-09-25 17:54:57 -07004226
Zhu Yib481de92007-09-25 17:54:57 -07004227 /* Error detected by uCode */
4228 if (inta & CSR_INT_BIT_SW_ERR) {
4229 IWL_ERROR("Microcode SW error detected. Restarting 0x%X.\n",
4230 inta);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004231 iwl3945_irq_handle_error(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004232 handled |= CSR_INT_BIT_SW_ERR;
4233 }
4234
4235 /* uCode wakes up after power-down sleep */
4236 if (inta & CSR_INT_BIT_WAKEUP) {
4237 IWL_DEBUG_ISR("Wakeup interrupt\n");
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004238 iwl3945_rx_queue_update_write_ptr(priv, &priv->rxq);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004239 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[0]);
4240 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[1]);
4241 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[2]);
4242 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[3]);
4243 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[4]);
4244 iwl3945_tx_queue_update_write_ptr(priv, &priv->txq39[5]);
Zhu Yib481de92007-09-25 17:54:57 -07004245
4246 handled |= CSR_INT_BIT_WAKEUP;
4247 }
4248
4249 /* All uCode command responses, including Tx command responses,
4250 * Rx "responses" (frame-received notification), and other
4251 * notifications from uCode come through here*/
4252 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004253 iwl3945_rx_handle(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004254 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
4255 }
4256
4257 if (inta & CSR_INT_BIT_FH_TX) {
4258 IWL_DEBUG_ISR("Tx interrupt\n");
4259
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004260 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
4261 if (!iwl_grab_nic_access(priv)) {
4262 iwl_write_direct32(priv, FH39_TCSR_CREDIT
Tomas Winklerbddadf82008-12-19 10:37:01 +08004263 (FH39_SRVC_CHNL), 0x0);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004264 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004265 }
4266 handled |= CSR_INT_BIT_FH_TX;
4267 }
4268
4269 if (inta & ~handled)
4270 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
4271
4272 if (inta & ~CSR_INI_SET_MASK) {
4273 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
4274 inta & ~CSR_INI_SET_MASK);
4275 IWL_WARNING(" with FH_INT = 0x%08x\n", inta_fh);
4276 }
4277
4278 /* Re-enable all interrupts */
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004279 /* only Re-enable if disabled by irq */
4280 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4281 iwl3945_enable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004282
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08004283#ifdef CONFIG_IWL3945_DEBUG
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08004284 if (priv->debug_level & (IWL_DL_ISR)) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004285 inta = iwl_read32(priv, CSR_INT);
4286 inta_mask = iwl_read32(priv, CSR_INT_MASK);
4287 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
Zhu Yib481de92007-09-25 17:54:57 -07004288 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
4289 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
4290 }
4291#endif
4292 spin_unlock_irqrestore(&priv->lock, flags);
4293}
4294
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004295static irqreturn_t iwl3945_isr(int irq, void *data)
Zhu Yib481de92007-09-25 17:54:57 -07004296{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004297 struct iwl_priv *priv = data;
Zhu Yib481de92007-09-25 17:54:57 -07004298 u32 inta, inta_mask;
4299 u32 inta_fh;
4300 if (!priv)
4301 return IRQ_NONE;
4302
4303 spin_lock(&priv->lock);
4304
4305 /* Disable (but don't clear!) interrupts here to avoid
4306 * back-to-back ISRs and sporadic interrupts from our NIC.
4307 * If we have something to service, the tasklet will re-enable ints.
4308 * If we *don't* have something, we'll re-enable before leaving here. */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004309 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
4310 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
Zhu Yib481de92007-09-25 17:54:57 -07004311
4312 /* Discover which interrupts are active/pending */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004313 inta = iwl_read32(priv, CSR_INT);
4314 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
Zhu Yib481de92007-09-25 17:54:57 -07004315
4316 /* Ignore interrupt if there's nothing in NIC to service.
4317 * This may be due to IRQ shared with another device,
4318 * or due to sporadic interrupts thrown from our NIC. */
4319 if (!inta && !inta_fh) {
4320 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
4321 goto none;
4322 }
4323
4324 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
4325 /* Hardware disappeared */
Zhu Yi99df6302008-12-02 12:13:58 -08004326 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
Oliver Neukumcb4da1a2007-11-13 21:10:32 -08004327 goto unplugged;
Zhu Yib481de92007-09-25 17:54:57 -07004328 }
4329
4330 IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
4331 inta, inta_mask, inta_fh);
4332
Joonwoo Park25c03d82008-01-23 10:15:20 -08004333 inta &= ~CSR_INT_BIT_SCD;
4334
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004335 /* iwl3945_irq_tasklet() will service interrupts and re-enable them */
Joonwoo Park25c03d82008-01-23 10:15:20 -08004336 if (likely(inta || inta_fh))
4337 tasklet_schedule(&priv->irq_tasklet);
Oliver Neukumcb4da1a2007-11-13 21:10:32 -08004338unplugged:
Zhu Yib481de92007-09-25 17:54:57 -07004339 spin_unlock(&priv->lock);
4340
4341 return IRQ_HANDLED;
4342
4343 none:
4344 /* re-enable interrupts here since we don't have anything to service. */
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004345 /* only Re-enable if disabled by irq */
4346 if (test_bit(STATUS_INT_ENABLED, &priv->status))
4347 iwl3945_enable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004348 spin_unlock(&priv->lock);
4349 return IRQ_NONE;
4350}
4351
4352/************************** EEPROM BANDS ****************************
4353 *
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004354 * The iwl3945_eeprom_band definitions below provide the mapping from the
Zhu Yib481de92007-09-25 17:54:57 -07004355 * EEPROM contents to the specific channel number supported for each
4356 * band.
4357 *
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004358 * For example, iwl3945_priv->eeprom39.band_3_channels[4] from the band_3
Zhu Yib481de92007-09-25 17:54:57 -07004359 * definition below maps to physical channel 42 in the 5.2GHz spectrum.
4360 * The specific geography and calibration information for that channel
4361 * is contained in the eeprom map itself.
4362 *
4363 * During init, we copy the eeprom information and channel map
4364 * information into priv->channel_info_24/52 and priv->channel_map_24/52
4365 *
4366 * channel_map_24/52 provides the index in the channel_info array for a
4367 * given channel. We have to have two separate maps as there is channel
4368 * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and
4369 * band_2
4370 *
4371 * A value of 0xff stored in the channel_map indicates that the channel
4372 * is not supported by the hardware at all.
4373 *
4374 * A value of 0xfe in the channel_map indicates that the channel is not
4375 * valid for Tx with the current hardware. This means that
4376 * while the system can tune and receive on a given channel, it may not
4377 * be able to associate or transmit any frames on that
4378 * channel. There is no corresponding channel information for that
4379 * entry.
4380 *
4381 *********************************************************************/
4382
4383/* 2.4 GHz */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004384static const u8 iwl3945_eeprom_band_1[14] = {
Zhu Yib481de92007-09-25 17:54:57 -07004385 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
4386};
4387
4388/* 5.2 GHz bands */
Ben Cahill9fbab512007-11-29 11:09:47 +08004389static const u8 iwl3945_eeprom_band_2[] = { /* 4915-5080MHz */
Zhu Yib481de92007-09-25 17:54:57 -07004390 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
4391};
4392
Ben Cahill9fbab512007-11-29 11:09:47 +08004393static const u8 iwl3945_eeprom_band_3[] = { /* 5170-5320MHz */
Zhu Yib481de92007-09-25 17:54:57 -07004394 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
4395};
4396
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004397static const u8 iwl3945_eeprom_band_4[] = { /* 5500-5700MHz */
Zhu Yib481de92007-09-25 17:54:57 -07004398 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
4399};
4400
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004401static const u8 iwl3945_eeprom_band_5[] = { /* 5725-5825MHz */
Zhu Yib481de92007-09-25 17:54:57 -07004402 145, 149, 153, 157, 161, 165
4403};
4404
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004405static void iwl3945_init_band_reference(const struct iwl_priv *priv, int band,
Zhu Yib481de92007-09-25 17:54:57 -07004406 int *eeprom_ch_count,
Samuel Ortiz0f741d92008-12-19 10:37:10 +08004407 const struct iwl_eeprom_channel
Zhu Yib481de92007-09-25 17:54:57 -07004408 **eeprom_ch_info,
4409 const u8 **eeprom_ch_index)
4410{
4411 switch (band) {
4412 case 1: /* 2.4GHz band */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004413 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_1);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004414 *eeprom_ch_info = priv->eeprom39.band_1_channels;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004415 *eeprom_ch_index = iwl3945_eeprom_band_1;
Zhu Yib481de92007-09-25 17:54:57 -07004416 break;
Ben Cahill9fbab512007-11-29 11:09:47 +08004417 case 2: /* 4.9GHz band */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004418 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_2);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004419 *eeprom_ch_info = priv->eeprom39.band_2_channels;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004420 *eeprom_ch_index = iwl3945_eeprom_band_2;
Zhu Yib481de92007-09-25 17:54:57 -07004421 break;
4422 case 3: /* 5.2GHz band */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004423 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_3);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004424 *eeprom_ch_info = priv->eeprom39.band_3_channels;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004425 *eeprom_ch_index = iwl3945_eeprom_band_3;
Zhu Yib481de92007-09-25 17:54:57 -07004426 break;
Ben Cahill9fbab512007-11-29 11:09:47 +08004427 case 4: /* 5.5GHz band */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004428 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_4);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004429 *eeprom_ch_info = priv->eeprom39.band_4_channels;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004430 *eeprom_ch_index = iwl3945_eeprom_band_4;
Zhu Yib481de92007-09-25 17:54:57 -07004431 break;
Ben Cahill9fbab512007-11-29 11:09:47 +08004432 case 5: /* 5.7GHz band */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004433 *eeprom_ch_count = ARRAY_SIZE(iwl3945_eeprom_band_5);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004434 *eeprom_ch_info = priv->eeprom39.band_5_channels;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004435 *eeprom_ch_index = iwl3945_eeprom_band_5;
Zhu Yib481de92007-09-25 17:54:57 -07004436 break;
4437 default:
4438 BUG();
4439 return;
4440 }
4441}
4442
Cahill, Ben M6440adb2007-11-29 11:09:55 +08004443/**
4444 * iwl3945_get_channel_info - Find driver's private channel info
4445 *
4446 * Based on band and channel number.
4447 */
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004448const struct iwl_channel_info *
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004449iwl3945_get_channel_info(const struct iwl_priv *priv,
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004450 enum ieee80211_band band, u16 channel)
Zhu Yib481de92007-09-25 17:54:57 -07004451{
4452 int i;
4453
Johannes Berg8318d782008-01-24 19:38:38 +01004454 switch (band) {
4455 case IEEE80211_BAND_5GHZ:
Zhu Yib481de92007-09-25 17:54:57 -07004456 for (i = 14; i < priv->channel_count; i++) {
4457 if (priv->channel_info[i].channel == channel)
4458 return &priv->channel_info[i];
4459 }
4460 break;
4461
Johannes Berg8318d782008-01-24 19:38:38 +01004462 case IEEE80211_BAND_2GHZ:
Zhu Yib481de92007-09-25 17:54:57 -07004463 if (channel >= 1 && channel <= 14)
4464 return &priv->channel_info[channel - 1];
4465 break;
Johannes Berg8318d782008-01-24 19:38:38 +01004466 case IEEE80211_NUM_BANDS:
4467 WARN_ON(1);
Zhu Yib481de92007-09-25 17:54:57 -07004468 }
4469
4470 return NULL;
4471}
4472
4473#define CHECK_AND_PRINT(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
4474 ? # x " " : "")
4475
Cahill, Ben M6440adb2007-11-29 11:09:55 +08004476/**
4477 * iwl3945_init_channel_map - Set up driver's info for all possible channels
4478 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004479static int iwl3945_init_channel_map(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004480{
4481 int eeprom_ch_count = 0;
4482 const u8 *eeprom_ch_index = NULL;
Samuel Ortiz0f741d92008-12-19 10:37:10 +08004483 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07004484 int band, ch;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004485 struct iwl_channel_info *ch_info;
Zhu Yib481de92007-09-25 17:54:57 -07004486
4487 if (priv->channel_count) {
4488 IWL_DEBUG_INFO("Channel map already initialized.\n");
4489 return 0;
4490 }
4491
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004492 if (priv->eeprom39.version < 0x2f) {
Zhu Yib481de92007-09-25 17:54:57 -07004493 IWL_WARNING("Unsupported EEPROM version: 0x%04X\n",
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08004494 priv->eeprom39.version);
Zhu Yib481de92007-09-25 17:54:57 -07004495 return -EINVAL;
4496 }
4497
4498 IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n");
4499
4500 priv->channel_count =
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004501 ARRAY_SIZE(iwl3945_eeprom_band_1) +
4502 ARRAY_SIZE(iwl3945_eeprom_band_2) +
4503 ARRAY_SIZE(iwl3945_eeprom_band_3) +
4504 ARRAY_SIZE(iwl3945_eeprom_band_4) +
4505 ARRAY_SIZE(iwl3945_eeprom_band_5);
Zhu Yib481de92007-09-25 17:54:57 -07004506
4507 IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count);
4508
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004509 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
Zhu Yib481de92007-09-25 17:54:57 -07004510 priv->channel_count, GFP_KERNEL);
4511 if (!priv->channel_info) {
4512 IWL_ERROR("Could not allocate channel_info\n");
4513 priv->channel_count = 0;
4514 return -ENOMEM;
4515 }
4516
4517 ch_info = priv->channel_info;
4518
4519 /* Loop through the 5 EEPROM bands adding them in order to the
4520 * channel map we maintain (that contains additional information than
4521 * what just in the EEPROM) */
4522 for (band = 1; band <= 5; band++) {
4523
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004524 iwl3945_init_band_reference(priv, band, &eeprom_ch_count,
Zhu Yib481de92007-09-25 17:54:57 -07004525 &eeprom_ch_info, &eeprom_ch_index);
4526
4527 /* Loop through each band adding each of the channels */
4528 for (ch = 0; ch < eeprom_ch_count; ch++) {
4529 ch_info->channel = eeprom_ch_index[ch];
Johannes Berg8318d782008-01-24 19:38:38 +01004530 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
4531 IEEE80211_BAND_5GHZ;
Zhu Yib481de92007-09-25 17:54:57 -07004532
4533 /* permanently store EEPROM's channel regulatory flags
4534 * and max power in channel info database. */
4535 ch_info->eeprom = eeprom_ch_info[ch];
4536
4537 /* Copy the run-time flags so they are there even on
4538 * invalid channels */
4539 ch_info->flags = eeprom_ch_info[ch].flags;
4540
4541 if (!(is_channel_valid(ch_info))) {
4542 IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - "
4543 "No traffic\n",
4544 ch_info->channel,
4545 ch_info->flags,
4546 is_channel_a_band(ch_info) ?
4547 "5.2" : "2.4");
4548 ch_info++;
4549 continue;
4550 }
4551
4552 /* Initialize regulatory-based run-time data */
4553 ch_info->max_power_avg = ch_info->curr_txpow =
4554 eeprom_ch_info[ch].max_power_avg;
4555 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
4556 ch_info->min_power = 0;
4557
Guy Cohenfe7c4042008-04-21 15:41:56 -07004558 IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
Zhu Yib481de92007-09-25 17:54:57 -07004559 " %ddBm): Ad-Hoc %ssupported\n",
4560 ch_info->channel,
4561 is_channel_a_band(ch_info) ?
4562 "5.2" : "2.4",
Tomas Winkler8211ef72008-03-02 01:36:04 +02004563 CHECK_AND_PRINT(VALID),
Zhu Yib481de92007-09-25 17:54:57 -07004564 CHECK_AND_PRINT(IBSS),
4565 CHECK_AND_PRINT(ACTIVE),
4566 CHECK_AND_PRINT(RADAR),
4567 CHECK_AND_PRINT(WIDE),
Zhu Yib481de92007-09-25 17:54:57 -07004568 CHECK_AND_PRINT(DFS),
4569 eeprom_ch_info[ch].flags,
4570 eeprom_ch_info[ch].max_power_avg,
4571 ((eeprom_ch_info[ch].
4572 flags & EEPROM_CHANNEL_IBSS)
4573 && !(eeprom_ch_info[ch].
4574 flags & EEPROM_CHANNEL_RADAR))
4575 ? "" : "not ");
4576
4577 /* Set the user_txpower_limit to the highest power
4578 * supported by any channel */
4579 if (eeprom_ch_info[ch].max_power_avg >
4580 priv->user_txpower_limit)
4581 priv->user_txpower_limit =
4582 eeprom_ch_info[ch].max_power_avg;
4583
4584 ch_info++;
4585 }
4586 }
4587
Cahill, Ben M6440adb2007-11-29 11:09:55 +08004588 /* Set up txpower settings in driver for all channels */
Zhu Yib481de92007-09-25 17:54:57 -07004589 if (iwl3945_txpower_set_from_eeprom(priv))
4590 return -EIO;
4591
4592 return 0;
4593}
4594
Reinette Chatre849e0dc2008-01-23 10:15:18 -08004595/*
4596 * iwl3945_free_channel_map - undo allocations in iwl3945_init_channel_map
4597 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004598static void iwl3945_free_channel_map(struct iwl_priv *priv)
Reinette Chatre849e0dc2008-01-23 10:15:18 -08004599{
4600 kfree(priv->channel_info);
4601 priv->channel_count = 0;
4602}
4603
Zhu Yib481de92007-09-25 17:54:57 -07004604/* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
4605 * sending probe req. This should be set long enough to hear probe responses
4606 * from more than one AP. */
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004607#define IWL_ACTIVE_DWELL_TIME_24 (30) /* all times in msec */
4608#define IWL_ACTIVE_DWELL_TIME_52 (20)
4609
4610#define IWL_ACTIVE_DWELL_FACTOR_24GHZ (3)
4611#define IWL_ACTIVE_DWELL_FACTOR_52GHZ (2)
Zhu Yib481de92007-09-25 17:54:57 -07004612
4613/* For faster active scanning, scan will move to the next channel if fewer than
4614 * PLCP_QUIET_THRESH packets are heard on this channel within
4615 * ACTIVE_QUIET_TIME after sending probe request. This shortens the dwell
4616 * time if it's a quiet channel (nothing responded to our probe, and there's
4617 * no other traffic).
4618 * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
4619#define IWL_PLCP_QUIET_THRESH __constant_cpu_to_le16(1) /* packets */
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004620#define IWL_ACTIVE_QUIET_TIME __constant_cpu_to_le16(10) /* msec */
Zhu Yib481de92007-09-25 17:54:57 -07004621
4622/* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
4623 * Must be set longer than active dwell time.
4624 * For the most reliable scan, set > AP beacon interval (typically 100msec). */
4625#define IWL_PASSIVE_DWELL_TIME_24 (20) /* all times in msec */
4626#define IWL_PASSIVE_DWELL_TIME_52 (10)
4627#define IWL_PASSIVE_DWELL_BASE (100)
4628#define IWL_CHANNEL_TUNE_TIME 5
4629
Kolekar, Abhijeete720ce92008-11-07 09:58:42 -08004630#define IWL_SCAN_PROBE_MASK(n) (BIT(n) | (BIT(n) - BIT(1)))
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004631
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004632static inline u16 iwl3945_get_active_dwell_time(struct iwl_priv *priv,
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004633 enum ieee80211_band band,
4634 u8 n_probes)
Zhu Yib481de92007-09-25 17:54:57 -07004635{
Johannes Berg8318d782008-01-24 19:38:38 +01004636 if (band == IEEE80211_BAND_5GHZ)
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004637 return IWL_ACTIVE_DWELL_TIME_52 +
4638 IWL_ACTIVE_DWELL_FACTOR_52GHZ * (n_probes + 1);
Zhu Yib481de92007-09-25 17:54:57 -07004639 else
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004640 return IWL_ACTIVE_DWELL_TIME_24 +
4641 IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
Zhu Yib481de92007-09-25 17:54:57 -07004642}
4643
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004644static u16 iwl3945_get_passive_dwell_time(struct iwl_priv *priv,
Johannes Berg8318d782008-01-24 19:38:38 +01004645 enum ieee80211_band band)
Zhu Yib481de92007-09-25 17:54:57 -07004646{
Johannes Berg8318d782008-01-24 19:38:38 +01004647 u16 passive = (band == IEEE80211_BAND_2GHZ) ?
Zhu Yib481de92007-09-25 17:54:57 -07004648 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
4649 IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
4650
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004651 if (iwl3945_is_associated(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07004652 /* If we're associated, we clamp the maximum passive
4653 * dwell time to be 98% of the beacon interval (minus
4654 * 2 * channel tune time) */
4655 passive = priv->beacon_int;
4656 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
4657 passive = IWL_PASSIVE_DWELL_BASE;
4658 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
4659 }
4660
Zhu Yib481de92007-09-25 17:54:57 -07004661 return passive;
4662}
4663
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004664static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
Johannes Berg8318d782008-01-24 19:38:38 +01004665 enum ieee80211_band band,
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004666 u8 is_active, u8 n_probes,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004667 struct iwl3945_scan_channel *scan_ch)
Zhu Yib481de92007-09-25 17:54:57 -07004668{
4669 const struct ieee80211_channel *channels = NULL;
Johannes Berg8318d782008-01-24 19:38:38 +01004670 const struct ieee80211_supported_band *sband;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004671 const struct iwl_channel_info *ch_info;
Zhu Yib481de92007-09-25 17:54:57 -07004672 u16 passive_dwell = 0;
4673 u16 active_dwell = 0;
4674 int added, i;
4675
Johannes Berg8318d782008-01-24 19:38:38 +01004676 sband = iwl3945_get_band(priv, band);
4677 if (!sband)
Zhu Yib481de92007-09-25 17:54:57 -07004678 return 0;
4679
Johannes Berg8318d782008-01-24 19:38:38 +01004680 channels = sband->channels;
Zhu Yib481de92007-09-25 17:54:57 -07004681
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08004682 active_dwell = iwl3945_get_active_dwell_time(priv, band, n_probes);
Johannes Berg8318d782008-01-24 19:38:38 +01004683 passive_dwell = iwl3945_get_passive_dwell_time(priv, band);
Zhu Yib481de92007-09-25 17:54:57 -07004684
Abhijeet Kolekar8f4807a2008-09-03 11:26:31 +08004685 if (passive_dwell <= active_dwell)
4686 passive_dwell = active_dwell + 1;
4687
Johannes Berg8318d782008-01-24 19:38:38 +01004688 for (i = 0, added = 0; i < sband->n_channels; i++) {
Johannes Berg182e2e62008-04-04 10:41:56 +02004689 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4690 continue;
4691
Johannes Berg8318d782008-01-24 19:38:38 +01004692 scan_ch->channel = channels[i].hw_value;
Zhu Yib481de92007-09-25 17:54:57 -07004693
Johannes Berg8318d782008-01-24 19:38:38 +01004694 ch_info = iwl3945_get_channel_info(priv, band, scan_ch->channel);
Zhu Yib481de92007-09-25 17:54:57 -07004695 if (!is_channel_valid(ch_info)) {
Ron Rindjunsky66b50042008-06-25 16:46:31 +08004696 IWL_DEBUG_SCAN("Channel %d is INVALID for this band.\n",
Zhu Yib481de92007-09-25 17:54:57 -07004697 scan_ch->channel);
4698 continue;
4699 }
4700
Zhu Yib481de92007-09-25 17:54:57 -07004701 scan_ch->active_dwell = cpu_to_le16(active_dwell);
4702 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
Abhijeet Kolekar011a0332008-12-02 12:14:07 -08004703 /* If passive , set up for auto-switch
4704 * and use long active_dwell time.
4705 */
4706 if (!is_active || is_channel_passive(ch_info) ||
4707 (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
4708 scan_ch->type = 0; /* passive */
4709 if (IWL_UCODE_API(priv->ucode_ver) == 1)
4710 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
4711 } else {
4712 scan_ch->type = 1; /* active */
4713 }
4714
4715 /* Set direct probe bits. These may be used both for active
4716 * scan channels (probes gets sent right away),
4717 * or for passive channels (probes get se sent only after
4718 * hearing clear Rx packet).*/
4719 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
4720 if (n_probes)
4721 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4722 } else {
4723 /* uCode v1 does not allow setting direct probe bits on
4724 * passive channel. */
4725 if ((scan_ch->type & 1) && n_probes)
4726 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
4727 }
Zhu Yib481de92007-09-25 17:54:57 -07004728
Ben Cahill9fbab512007-11-29 11:09:47 +08004729 /* Set txpower levels to defaults */
Zhu Yib481de92007-09-25 17:54:57 -07004730 scan_ch->tpc.dsp_atten = 110;
4731 /* scan_pwr_info->tpc.dsp_atten; */
4732
4733 /*scan_pwr_info->tpc.tx_gain; */
Johannes Berg8318d782008-01-24 19:38:38 +01004734 if (band == IEEE80211_BAND_5GHZ)
Zhu Yib481de92007-09-25 17:54:57 -07004735 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
4736 else {
4737 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
4738 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
Ben Cahill9fbab512007-11-29 11:09:47 +08004739 * power level:
Reinette Chatre8a1b0242008-01-14 17:46:25 -08004740 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
Zhu Yib481de92007-09-25 17:54:57 -07004741 */
4742 }
4743
4744 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
4745 scan_ch->channel,
4746 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
4747 (scan_ch->type & 1) ?
4748 active_dwell : passive_dwell);
4749
4750 scan_ch++;
4751 added++;
4752 }
4753
4754 IWL_DEBUG_SCAN("total channels to scan %d \n", added);
4755 return added;
4756}
4757
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004758static void iwl3945_init_hw_rates(struct iwl_priv *priv,
Zhu Yib481de92007-09-25 17:54:57 -07004759 struct ieee80211_rate *rates)
4760{
4761 int i;
4762
4763 for (i = 0; i < IWL_RATE_COUNT; i++) {
Johannes Berg8318d782008-01-24 19:38:38 +01004764 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
4765 rates[i].hw_value = i; /* Rate scaling will work on indexes */
4766 rates[i].hw_value_short = i;
4767 rates[i].flags = 0;
Samuel Ortizd9829a62008-12-19 10:37:12 +08004768 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
Zhu Yib481de92007-09-25 17:54:57 -07004769 /*
Johannes Berg8318d782008-01-24 19:38:38 +01004770 * If CCK != 1M then set short preamble rate flag.
Zhu Yib481de92007-09-25 17:54:57 -07004771 */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004772 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
Johannes Berg8318d782008-01-24 19:38:38 +01004773 0 : IEEE80211_RATE_SHORT_PREAMBLE;
Zhu Yib481de92007-09-25 17:54:57 -07004774 }
Zhu Yib481de92007-09-25 17:54:57 -07004775 }
4776}
4777
4778/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004779 * iwl3945_init_geos - Initialize mac80211's geo/channel info based from eeprom
Zhu Yib481de92007-09-25 17:54:57 -07004780 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004781static int iwl3945_init_geos(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004782{
Samuel Ortizd20b3c62008-12-19 10:37:15 +08004783 struct iwl_channel_info *ch;
Tomas Winkler8211ef72008-03-02 01:36:04 +02004784 struct ieee80211_supported_band *sband;
Zhu Yib481de92007-09-25 17:54:57 -07004785 struct ieee80211_channel *channels;
4786 struct ieee80211_channel *geo_ch;
4787 struct ieee80211_rate *rates;
4788 int i = 0;
Zhu Yib481de92007-09-25 17:54:57 -07004789
Johannes Berg8318d782008-01-24 19:38:38 +01004790 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
4791 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
Zhu Yib481de92007-09-25 17:54:57 -07004792 IWL_DEBUG_INFO("Geography modes already initialized.\n");
4793 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4794 return 0;
4795 }
4796
Zhu Yib481de92007-09-25 17:54:57 -07004797 channels = kzalloc(sizeof(struct ieee80211_channel) *
4798 priv->channel_count, GFP_KERNEL);
Johannes Berg8318d782008-01-24 19:38:38 +01004799 if (!channels)
Zhu Yib481de92007-09-25 17:54:57 -07004800 return -ENOMEM;
Zhu Yib481de92007-09-25 17:54:57 -07004801
Tomas Winkler8211ef72008-03-02 01:36:04 +02004802 rates = kzalloc((sizeof(struct ieee80211_rate) * (IWL_RATE_COUNT + 1)),
Zhu Yib481de92007-09-25 17:54:57 -07004803 GFP_KERNEL);
4804 if (!rates) {
Zhu Yib481de92007-09-25 17:54:57 -07004805 kfree(channels);
4806 return -ENOMEM;
4807 }
4808
Zhu Yib481de92007-09-25 17:54:57 -07004809 /* 5.2GHz channels start after the 2.4GHz channels */
Tomas Winkler8211ef72008-03-02 01:36:04 +02004810 sband = &priv->bands[IEEE80211_BAND_5GHZ];
4811 sband->channels = &channels[ARRAY_SIZE(iwl3945_eeprom_band_1)];
4812 /* just OFDM */
4813 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
4814 sband->n_bitrates = IWL_RATE_COUNT - IWL_FIRST_OFDM_RATE;
Zhu Yib481de92007-09-25 17:54:57 -07004815
Tomas Winkler8211ef72008-03-02 01:36:04 +02004816 sband = &priv->bands[IEEE80211_BAND_2GHZ];
4817 sband->channels = channels;
4818 /* OFDM & CCK */
4819 sband->bitrates = rates;
4820 sband->n_bitrates = IWL_RATE_COUNT;
Zhu Yib481de92007-09-25 17:54:57 -07004821
4822 priv->ieee_channels = channels;
4823 priv->ieee_rates = rates;
4824
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004825 iwl3945_init_hw_rates(priv, rates);
Zhu Yib481de92007-09-25 17:54:57 -07004826
Tomas Winkler8211ef72008-03-02 01:36:04 +02004827 for (i = 0; i < priv->channel_count; i++) {
Zhu Yib481de92007-09-25 17:54:57 -07004828 ch = &priv->channel_info[i];
4829
Tomas Winkler8211ef72008-03-02 01:36:04 +02004830 /* FIXME: might be removed if scan is OK*/
4831 if (!is_channel_valid(ch))
Zhu Yib481de92007-09-25 17:54:57 -07004832 continue;
Zhu Yib481de92007-09-25 17:54:57 -07004833
4834 if (is_channel_a_band(ch))
Tomas Winkler8211ef72008-03-02 01:36:04 +02004835 sband = &priv->bands[IEEE80211_BAND_5GHZ];
Johannes Berg8318d782008-01-24 19:38:38 +01004836 else
Tomas Winkler8211ef72008-03-02 01:36:04 +02004837 sband = &priv->bands[IEEE80211_BAND_2GHZ];
Zhu Yib481de92007-09-25 17:54:57 -07004838
Tomas Winkler8211ef72008-03-02 01:36:04 +02004839 geo_ch = &sband->channels[sband->n_channels++];
4840
4841 geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel);
Johannes Berg8318d782008-01-24 19:38:38 +01004842 geo_ch->max_power = ch->max_power_avg;
4843 geo_ch->max_antenna_gain = 0xff;
Mohamed Abbas7b723042008-01-31 21:46:40 -08004844 geo_ch->hw_value = ch->channel;
Zhu Yib481de92007-09-25 17:54:57 -07004845
4846 if (is_channel_valid(ch)) {
Johannes Berg8318d782008-01-24 19:38:38 +01004847 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
4848 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
Zhu Yib481de92007-09-25 17:54:57 -07004849
Johannes Berg8318d782008-01-24 19:38:38 +01004850 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
4851 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
Zhu Yib481de92007-09-25 17:54:57 -07004852
4853 if (ch->flags & EEPROM_CHANNEL_RADAR)
Johannes Berg8318d782008-01-24 19:38:38 +01004854 geo_ch->flags |= IEEE80211_CHAN_RADAR;
Zhu Yib481de92007-09-25 17:54:57 -07004855
4856 if (ch->max_power_avg > priv->max_channel_txpower_limit)
4857 priv->max_channel_txpower_limit =
4858 ch->max_power_avg;
Tomas Winkler8211ef72008-03-02 01:36:04 +02004859 } else {
Johannes Berg8318d782008-01-24 19:38:38 +01004860 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
Tomas Winkler8211ef72008-03-02 01:36:04 +02004861 }
4862
4863 /* Save flags for reg domain usage */
4864 geo_ch->orig_flags = geo_ch->flags;
4865
4866 IWL_DEBUG_INFO("Channel %d Freq=%d[%sGHz] %s flag=0%X\n",
4867 ch->channel, geo_ch->center_freq,
4868 is_channel_a_band(ch) ? "5.2" : "2.4",
4869 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
4870 "restricted" : "valid",
4871 geo_ch->flags);
Zhu Yib481de92007-09-25 17:54:57 -07004872 }
4873
Tomas Winkler82b9a122008-03-04 18:09:30 -08004874 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
4875 priv->cfg->sku & IWL_SKU_A) {
Tomas Winkler978785a2008-12-19 10:37:31 +08004876 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
4877 "Please send your PCI ID 0x%04X:0x%04X to maintainer.\n",
4878 priv->pci_dev->device, priv->pci_dev->subsystem_device);
Tomas Winkler82b9a122008-03-04 18:09:30 -08004879 priv->cfg->sku &= ~IWL_SKU_A;
Zhu Yib481de92007-09-25 17:54:57 -07004880 }
4881
Tomas Winkler978785a2008-12-19 10:37:31 +08004882 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
Johannes Berg8318d782008-01-24 19:38:38 +01004883 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
4884 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
Zhu Yib481de92007-09-25 17:54:57 -07004885
John W. Linvillee0e0a672008-03-25 15:58:40 -04004886 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
4887 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
4888 &priv->bands[IEEE80211_BAND_2GHZ];
4889 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
4890 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
4891 &priv->bands[IEEE80211_BAND_5GHZ];
Zhu Yib481de92007-09-25 17:54:57 -07004892
Zhu Yib481de92007-09-25 17:54:57 -07004893 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
4894
4895 return 0;
4896}
4897
Reinette Chatre849e0dc2008-01-23 10:15:18 -08004898/*
4899 * iwl3945_free_geos - undo allocations in iwl3945_init_geos
4900 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004901static void iwl3945_free_geos(struct iwl_priv *priv)
Reinette Chatre849e0dc2008-01-23 10:15:18 -08004902{
Reinette Chatre849e0dc2008-01-23 10:15:18 -08004903 kfree(priv->ieee_channels);
4904 kfree(priv->ieee_rates);
4905 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
4906}
4907
Zhu Yib481de92007-09-25 17:54:57 -07004908/******************************************************************************
4909 *
4910 * uCode download functions
4911 *
4912 ******************************************************************************/
4913
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004914static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07004915{
Tomas Winkler98c92212008-01-14 17:46:20 -08004916 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
4917 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
4918 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
4919 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
4920 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
4921 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
Zhu Yib481de92007-09-25 17:54:57 -07004922}
4923
4924/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004925 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
Zhu Yib481de92007-09-25 17:54:57 -07004926 * looking at all data.
4927 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004928static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
Zhu Yib481de92007-09-25 17:54:57 -07004929{
4930 u32 val;
4931 u32 save_len = len;
4932 int rc = 0;
4933 u32 errcnt;
4934
4935 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4936
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004937 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004938 if (rc)
4939 return rc;
4940
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004941 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Samuel Ortiz250bdd22008-12-19 10:37:11 +08004942 IWL39_RTC_INST_LOWER_BOUND);
Zhu Yib481de92007-09-25 17:54:57 -07004943
4944 errcnt = 0;
4945 for (; len > 0; len -= sizeof(u32), image++) {
4946 /* read data comes through single port, auto-incr addr */
4947 /* NOTE: Use the debugless read so we don't flood kernel log
4948 * if IWL_DL_IO is set */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004949 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Zhu Yib481de92007-09-25 17:54:57 -07004950 if (val != le32_to_cpu(*image)) {
4951 IWL_ERROR("uCode INST section is invalid at "
4952 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4953 save_len - len, val, le32_to_cpu(*image));
4954 rc = -EIO;
4955 errcnt++;
4956 if (errcnt >= 20)
4957 break;
4958 }
4959 }
4960
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004961 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004962
4963 if (!errcnt)
Ian Schrambc434dd2007-10-25 17:15:29 +08004964 IWL_DEBUG_INFO("ucode image in INSTRUCTION memory is good\n");
Zhu Yib481de92007-09-25 17:54:57 -07004965
4966 return rc;
4967}
4968
4969
4970/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08004971 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
Zhu Yib481de92007-09-25 17:54:57 -07004972 * using sample data 100 bytes apart. If these sample points are good,
4973 * it's a pretty good bet that everything between them is good, too.
4974 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08004975static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
Zhu Yib481de92007-09-25 17:54:57 -07004976{
4977 u32 val;
4978 int rc = 0;
4979 u32 errcnt = 0;
4980 u32 i;
4981
4982 IWL_DEBUG_INFO("ucode inst image size is %u\n", len);
4983
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004984 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004985 if (rc)
4986 return rc;
4987
4988 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
4989 /* read data comes through single port, auto-incr addr */
4990 /* NOTE: Use the debugless read so we don't flood kernel log
4991 * if IWL_DL_IO is set */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004992 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
Samuel Ortiz250bdd22008-12-19 10:37:11 +08004993 i + IWL39_RTC_INST_LOWER_BOUND);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08004994 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Zhu Yib481de92007-09-25 17:54:57 -07004995 if (val != le32_to_cpu(*image)) {
4996#if 0 /* Enable this if you want to see details */
4997 IWL_ERROR("uCode INST section is invalid at "
4998 "offset 0x%x, is 0x%x, s/b 0x%x\n",
4999 i, val, *image);
5000#endif
5001 rc = -EIO;
5002 errcnt++;
5003 if (errcnt >= 3)
5004 break;
5005 }
5006 }
5007
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005008 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005009
5010 return rc;
5011}
5012
5013
5014/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005015 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
Zhu Yib481de92007-09-25 17:54:57 -07005016 * and verify its contents
5017 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005018static int iwl3945_verify_ucode(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005019{
5020 __le32 *image;
5021 u32 len;
5022 int rc = 0;
5023
5024 /* Try bootstrap */
5025 image = (__le32 *)priv->ucode_boot.v_addr;
5026 len = priv->ucode_boot.len;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005027 rc = iwl3945_verify_inst_sparse(priv, image, len);
Zhu Yib481de92007-09-25 17:54:57 -07005028 if (rc == 0) {
5029 IWL_DEBUG_INFO("Bootstrap uCode is good in inst SRAM\n");
5030 return 0;
5031 }
5032
5033 /* Try initialize */
5034 image = (__le32 *)priv->ucode_init.v_addr;
5035 len = priv->ucode_init.len;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005036 rc = iwl3945_verify_inst_sparse(priv, image, len);
Zhu Yib481de92007-09-25 17:54:57 -07005037 if (rc == 0) {
5038 IWL_DEBUG_INFO("Initialize uCode is good in inst SRAM\n");
5039 return 0;
5040 }
5041
5042 /* Try runtime/protocol */
5043 image = (__le32 *)priv->ucode_code.v_addr;
5044 len = priv->ucode_code.len;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005045 rc = iwl3945_verify_inst_sparse(priv, image, len);
Zhu Yib481de92007-09-25 17:54:57 -07005046 if (rc == 0) {
5047 IWL_DEBUG_INFO("Runtime uCode is good in inst SRAM\n");
5048 return 0;
5049 }
5050
5051 IWL_ERROR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
5052
Ben Cahill9fbab512007-11-29 11:09:47 +08005053 /* Since nothing seems to match, show first several data entries in
5054 * instruction SRAM, so maybe visual inspection will give a clue.
5055 * Selection of bootstrap image (vs. other images) is arbitrary. */
Zhu Yib481de92007-09-25 17:54:57 -07005056 image = (__le32 *)priv->ucode_boot.v_addr;
5057 len = priv->ucode_boot.len;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005058 rc = iwl3945_verify_inst_full(priv, image, len);
Zhu Yib481de92007-09-25 17:54:57 -07005059
5060 return rc;
5061}
5062
5063
5064/* check contents of special bootstrap uCode SRAM */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005065static int iwl3945_verify_bsm(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005066{
5067 __le32 *image = priv->ucode_boot.v_addr;
5068 u32 len = priv->ucode_boot.len;
5069 u32 reg;
5070 u32 val;
5071
5072 IWL_DEBUG_INFO("Begin verify bsm\n");
5073
5074 /* verify BSM SRAM contents */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005075 val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG);
Zhu Yib481de92007-09-25 17:54:57 -07005076 for (reg = BSM_SRAM_LOWER_BOUND;
5077 reg < BSM_SRAM_LOWER_BOUND + len;
Tomas Winkler3ac7f142008-07-21 02:40:14 +03005078 reg += sizeof(u32), image++) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005079 val = iwl_read_prph(priv, reg);
Zhu Yib481de92007-09-25 17:54:57 -07005080 if (val != le32_to_cpu(*image)) {
5081 IWL_ERROR("BSM uCode verification failed at "
5082 "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n",
5083 BSM_SRAM_LOWER_BOUND,
5084 reg - BSM_SRAM_LOWER_BOUND, len,
5085 val, le32_to_cpu(*image));
5086 return -EIO;
5087 }
5088 }
5089
5090 IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n");
5091
5092 return 0;
5093}
5094
5095/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005096 * iwl3945_load_bsm - Load bootstrap instructions
Zhu Yib481de92007-09-25 17:54:57 -07005097 *
5098 * BSM operation:
5099 *
5100 * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program
5101 * in special SRAM that does not power down during RFKILL. When powering back
5102 * up after power-saving sleeps (or during initial uCode load), the BSM loads
5103 * the bootstrap program into the on-board processor, and starts it.
5104 *
5105 * The bootstrap program loads (via DMA) instructions and data for a new
5106 * program from host DRAM locations indicated by the host driver in the
5107 * BSM_DRAM_* registers. Once the new program is loaded, it starts
5108 * automatically.
5109 *
5110 * When initializing the NIC, the host driver points the BSM to the
5111 * "initialize" uCode image. This uCode sets up some internal data, then
5112 * notifies host via "initialize alive" that it is complete.
5113 *
5114 * The host then replaces the BSM_DRAM_* pointer values to point to the
5115 * normal runtime uCode instructions and a backup uCode data cache buffer
5116 * (filled initially with starting data values for the on-board processor),
5117 * then triggers the "initialize" uCode to load and launch the runtime uCode,
5118 * which begins normal operation.
5119 *
5120 * When doing a power-save shutdown, runtime uCode saves data SRAM into
5121 * the backup data cache in DRAM before SRAM is powered down.
5122 *
5123 * When powering back up, the BSM loads the bootstrap program. This reloads
5124 * the runtime uCode instructions and the backup data cache into SRAM,
5125 * and re-launches the runtime uCode from where it left off.
5126 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005127static int iwl3945_load_bsm(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005128{
5129 __le32 *image = priv->ucode_boot.v_addr;
5130 u32 len = priv->ucode_boot.len;
5131 dma_addr_t pinst;
5132 dma_addr_t pdata;
5133 u32 inst_len;
5134 u32 data_len;
5135 int rc;
5136 int i;
5137 u32 done;
5138 u32 reg_offset;
5139
5140 IWL_DEBUG_INFO("Begin load bsm\n");
5141
5142 /* make sure bootstrap program is no larger than BSM's SRAM size */
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005143 if (len > IWL39_MAX_BSM_SIZE)
Zhu Yib481de92007-09-25 17:54:57 -07005144 return -EINVAL;
5145
5146 /* Tell bootstrap uCode where to find the "Initialize" uCode
Ben Cahill9fbab512007-11-29 11:09:47 +08005147 * in host DRAM ... host DRAM physical address bits 31:0 for 3945.
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005148 * NOTE: iwl3945_initialize_alive_start() will replace these values,
Zhu Yib481de92007-09-25 17:54:57 -07005149 * after the "initialize" uCode has run, to point to
5150 * runtime/protocol instructions and backup data cache. */
5151 pinst = priv->ucode_init.p_addr;
5152 pdata = priv->ucode_init_data.p_addr;
5153 inst_len = priv->ucode_init.len;
5154 data_len = priv->ucode_init_data.len;
5155
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005156 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005157 if (rc)
5158 return rc;
5159
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005160 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5161 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5162 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len);
5163 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len);
Zhu Yib481de92007-09-25 17:54:57 -07005164
5165 /* Fill BSM memory with bootstrap instructions */
5166 for (reg_offset = BSM_SRAM_LOWER_BOUND;
5167 reg_offset < BSM_SRAM_LOWER_BOUND + len;
5168 reg_offset += sizeof(u32), image++)
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005169 _iwl_write_prph(priv, reg_offset,
Zhu Yib481de92007-09-25 17:54:57 -07005170 le32_to_cpu(*image));
5171
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005172 rc = iwl3945_verify_bsm(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005173 if (rc) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005174 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005175 return rc;
5176 }
5177
5178 /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005179 iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0);
5180 iwl_write_prph(priv, BSM_WR_MEM_DST_REG,
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005181 IWL39_RTC_INST_LOWER_BOUND);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005182 iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32));
Zhu Yib481de92007-09-25 17:54:57 -07005183
5184 /* Load bootstrap code into instruction SRAM now,
5185 * to prepare to load "initialize" uCode */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005186 iwl_write_prph(priv, BSM_WR_CTRL_REG,
Zhu Yib481de92007-09-25 17:54:57 -07005187 BSM_WR_CTRL_REG_BIT_START);
5188
5189 /* Wait for load of bootstrap uCode to finish */
5190 for (i = 0; i < 100; i++) {
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005191 done = iwl_read_prph(priv, BSM_WR_CTRL_REG);
Zhu Yib481de92007-09-25 17:54:57 -07005192 if (!(done & BSM_WR_CTRL_REG_BIT_START))
5193 break;
5194 udelay(10);
5195 }
5196 if (i < 100)
5197 IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i);
5198 else {
5199 IWL_ERROR("BSM write did not complete!\n");
5200 return -EIO;
5201 }
5202
5203 /* Enable future boot loads whenever power management unit triggers it
5204 * (e.g. when powering back up after power-save shutdown) */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005205 iwl_write_prph(priv, BSM_WR_CTRL_REG,
Zhu Yib481de92007-09-25 17:54:57 -07005206 BSM_WR_CTRL_REG_BIT_START_EN);
5207
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005208 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005209
5210 return 0;
5211}
5212
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005213static void iwl3945_nic_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005214{
5215 /* Remove all resets to allow NIC to operate */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005216 iwl_write32(priv, CSR_RESET, 0);
Zhu Yib481de92007-09-25 17:54:57 -07005217}
5218
5219/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005220 * iwl3945_read_ucode - Read uCode images from disk file.
Zhu Yib481de92007-09-25 17:54:57 -07005221 *
5222 * Copy into buffers for card to fetch via bus-mastering
5223 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005224static int iwl3945_read_ucode(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005225{
Kolekar, Abhijeeta78fe752008-12-19 10:37:21 +08005226 struct iwl_ucode *ucode;
Reinette Chatrea0987a82008-12-02 12:14:06 -08005227 int ret = -EINVAL, index;
Zhu Yib481de92007-09-25 17:54:57 -07005228 const struct firmware *ucode_raw;
5229 /* firmware file name contains uCode/driver compatibility version */
Reinette Chatrea0987a82008-12-02 12:14:06 -08005230 const char *name_pre = priv->cfg->fw_name_pre;
5231 const unsigned int api_max = priv->cfg->ucode_api_max;
5232 const unsigned int api_min = priv->cfg->ucode_api_min;
5233 char buf[25];
Zhu Yib481de92007-09-25 17:54:57 -07005234 u8 *src;
5235 size_t len;
Reinette Chatrea0987a82008-12-02 12:14:06 -08005236 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
Zhu Yib481de92007-09-25 17:54:57 -07005237
5238 /* Ask kernel firmware_class module to get the boot firmware off disk.
5239 * request_firmware() is synchronous, file is in memory on return. */
Reinette Chatrea0987a82008-12-02 12:14:06 -08005240 for (index = api_max; index >= api_min; index--) {
5241 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
5242 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
5243 if (ret < 0) {
5244 IWL_ERROR("%s firmware file req failed: Reason %d\n",
5245 buf, ret);
5246 if (ret == -ENOENT)
5247 continue;
5248 else
5249 goto error;
5250 } else {
5251 if (index < api_max)
5252 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
5253 buf, api_max);
5254 IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
5255 buf, ucode_raw->size);
5256 break;
5257 }
Zhu Yib481de92007-09-25 17:54:57 -07005258 }
5259
Reinette Chatrea0987a82008-12-02 12:14:06 -08005260 if (ret < 0)
5261 goto error;
Zhu Yib481de92007-09-25 17:54:57 -07005262
5263 /* Make sure that we got at least our header! */
5264 if (ucode_raw->size < sizeof(*ucode)) {
5265 IWL_ERROR("File size way too small!\n");
Tomas Winkler90e759d2007-11-29 11:09:41 +08005266 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005267 goto err_release;
5268 }
5269
5270 /* Data from ucode file: header followed by uCode images */
5271 ucode = (void *)ucode_raw->data;
5272
Chatre, Reinettec02b3ac2008-12-02 12:14:05 -08005273 priv->ucode_ver = le32_to_cpu(ucode->ver);
Reinette Chatrea0987a82008-12-02 12:14:06 -08005274 api_ver = IWL_UCODE_API(priv->ucode_ver);
Zhu Yib481de92007-09-25 17:54:57 -07005275 inst_size = le32_to_cpu(ucode->inst_size);
5276 data_size = le32_to_cpu(ucode->data_size);
5277 init_size = le32_to_cpu(ucode->init_size);
5278 init_data_size = le32_to_cpu(ucode->init_data_size);
5279 boot_size = le32_to_cpu(ucode->boot_size);
5280
Reinette Chatrea0987a82008-12-02 12:14:06 -08005281 /* api_ver should match the api version forming part of the
5282 * firmware filename ... but we don't check for that and only rely
5283 * on the API version read from firware header from here on forward */
5284
5285 if (api_ver < api_min || api_ver > api_max) {
5286 IWL_ERROR("Driver unable to support your firmware API. "
5287 "Driver supports v%u, firmware is v%u.\n",
5288 api_max, api_ver);
5289 priv->ucode_ver = 0;
5290 ret = -EINVAL;
5291 goto err_release;
5292 }
5293 if (api_ver != api_max)
5294 IWL_ERROR("Firmware has old API version. Expected %u, "
5295 "got %u. New firmware can be obtained "
5296 "from http://www.intellinuxwireless.org.\n",
5297 api_max, api_ver);
5298
Tomas Winkler978785a2008-12-19 10:37:31 +08005299 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
5300 IWL_UCODE_MAJOR(priv->ucode_ver),
5301 IWL_UCODE_MINOR(priv->ucode_ver),
5302 IWL_UCODE_API(priv->ucode_ver),
5303 IWL_UCODE_SERIAL(priv->ucode_ver));
5304
Reinette Chatrea0987a82008-12-02 12:14:06 -08005305 IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
5306 priv->ucode_ver);
Ian Schrambc434dd2007-10-25 17:15:29 +08005307 IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
5308 IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n", data_size);
5309 IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n", init_size);
5310 IWL_DEBUG_INFO("f/w package hdr init data size = %u\n", init_data_size);
5311 IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n", boot_size);
Zhu Yib481de92007-09-25 17:54:57 -07005312
Reinette Chatrea0987a82008-12-02 12:14:06 -08005313
Zhu Yib481de92007-09-25 17:54:57 -07005314 /* Verify size of file vs. image size info in file's header */
5315 if (ucode_raw->size < sizeof(*ucode) +
5316 inst_size + data_size + init_size +
5317 init_data_size + boot_size) {
5318
5319 IWL_DEBUG_INFO("uCode file size %d too small\n",
5320 (int)ucode_raw->size);
Tomas Winkler90e759d2007-11-29 11:09:41 +08005321 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005322 goto err_release;
5323 }
5324
5325 /* Verify that uCode images will fit in card's SRAM */
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005326 if (inst_size > IWL39_MAX_INST_SIZE) {
Tomas Winkler90e759d2007-11-29 11:09:41 +08005327 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
5328 inst_size);
5329 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005330 goto err_release;
5331 }
5332
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005333 if (data_size > IWL39_MAX_DATA_SIZE) {
Tomas Winkler90e759d2007-11-29 11:09:41 +08005334 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
5335 data_size);
5336 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005337 goto err_release;
5338 }
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005339 if (init_size > IWL39_MAX_INST_SIZE) {
Tomas Winkler90e759d2007-11-29 11:09:41 +08005340 IWL_DEBUG_INFO("uCode init instr len %d too large to fit in\n",
5341 init_size);
5342 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005343 goto err_release;
5344 }
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005345 if (init_data_size > IWL39_MAX_DATA_SIZE) {
Tomas Winkler90e759d2007-11-29 11:09:41 +08005346 IWL_DEBUG_INFO("uCode init data len %d too large to fit in\n",
5347 init_data_size);
5348 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005349 goto err_release;
5350 }
Samuel Ortiz250bdd22008-12-19 10:37:11 +08005351 if (boot_size > IWL39_MAX_BSM_SIZE) {
Tomas Winkler90e759d2007-11-29 11:09:41 +08005352 IWL_DEBUG_INFO("uCode boot instr len %d too large to fit in\n",
5353 boot_size);
5354 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07005355 goto err_release;
5356 }
5357
5358 /* Allocate ucode buffers for card's bus-master loading ... */
5359
5360 /* Runtime instructions and 2 copies of data:
5361 * 1) unmodified from disk
5362 * 2) backup cache for save/restore during power-downs */
5363 priv->ucode_code.len = inst_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005364 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Zhu Yib481de92007-09-25 17:54:57 -07005365
5366 priv->ucode_data.len = data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005367 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Zhu Yib481de92007-09-25 17:54:57 -07005368
5369 priv->ucode_data_backup.len = data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005370 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Zhu Yib481de92007-09-25 17:54:57 -07005371
5372 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
Tomas Winkler90e759d2007-11-29 11:09:41 +08005373 !priv->ucode_data_backup.v_addr)
Zhu Yib481de92007-09-25 17:54:57 -07005374 goto err_pci_alloc;
5375
Tomas Winkler90e759d2007-11-29 11:09:41 +08005376 /* Initialization instructions and data */
5377 if (init_size && init_data_size) {
5378 priv->ucode_init.len = init_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005379 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
Tomas Winkler90e759d2007-11-29 11:09:41 +08005380
5381 priv->ucode_init_data.len = init_data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005382 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
Tomas Winkler90e759d2007-11-29 11:09:41 +08005383
5384 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
5385 goto err_pci_alloc;
5386 }
5387
5388 /* Bootstrap (instructions only, no data) */
5389 if (boot_size) {
5390 priv->ucode_boot.len = boot_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08005391 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Tomas Winkler90e759d2007-11-29 11:09:41 +08005392
5393 if (!priv->ucode_boot.v_addr)
5394 goto err_pci_alloc;
5395 }
5396
Zhu Yib481de92007-09-25 17:54:57 -07005397 /* Copy images into buffers for card's bus-master reads ... */
5398
5399 /* Runtime instructions (first block of data in file) */
5400 src = &ucode->data[0];
5401 len = priv->ucode_code.len;
Tomas Winkler90e759d2007-11-29 11:09:41 +08005402 IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
Zhu Yib481de92007-09-25 17:54:57 -07005403 memcpy(priv->ucode_code.v_addr, src, len);
5404 IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
5405 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
5406
5407 /* Runtime data (2nd block)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005408 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
Zhu Yib481de92007-09-25 17:54:57 -07005409 src = &ucode->data[inst_size];
5410 len = priv->ucode_data.len;
Tomas Winkler90e759d2007-11-29 11:09:41 +08005411 IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
Zhu Yib481de92007-09-25 17:54:57 -07005412 memcpy(priv->ucode_data.v_addr, src, len);
5413 memcpy(priv->ucode_data_backup.v_addr, src, len);
5414
5415 /* Initialization instructions (3rd block) */
5416 if (init_size) {
5417 src = &ucode->data[inst_size + data_size];
5418 len = priv->ucode_init.len;
Tomas Winkler90e759d2007-11-29 11:09:41 +08005419 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
5420 len);
Zhu Yib481de92007-09-25 17:54:57 -07005421 memcpy(priv->ucode_init.v_addr, src, len);
5422 }
5423
5424 /* Initialization data (4th block) */
5425 if (init_data_size) {
5426 src = &ucode->data[inst_size + data_size + init_size];
5427 len = priv->ucode_init_data.len;
5428 IWL_DEBUG_INFO("Copying (but not loading) init data len %d\n",
5429 (int)len);
5430 memcpy(priv->ucode_init_data.v_addr, src, len);
5431 }
5432
5433 /* Bootstrap instructions (5th block) */
5434 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
5435 len = priv->ucode_boot.len;
5436 IWL_DEBUG_INFO("Copying (but not loading) boot instr len %d\n",
5437 (int)len);
5438 memcpy(priv->ucode_boot.v_addr, src, len);
5439
5440 /* We have our copies now, allow OS release its copies */
5441 release_firmware(ucode_raw);
5442 return 0;
5443
5444 err_pci_alloc:
5445 IWL_ERROR("failed to allocate pci memory\n");
Tomas Winkler90e759d2007-11-29 11:09:41 +08005446 ret = -ENOMEM;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005447 iwl3945_dealloc_ucode_pci(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005448
5449 err_release:
5450 release_firmware(ucode_raw);
5451
5452 error:
Tomas Winkler90e759d2007-11-29 11:09:41 +08005453 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07005454}
5455
5456
5457/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005458 * iwl3945_set_ucode_ptrs - Set uCode address location
Zhu Yib481de92007-09-25 17:54:57 -07005459 *
5460 * Tell initialization uCode where to find runtime uCode.
5461 *
5462 * BSM registers initially contain pointers to initialization uCode.
5463 * We need to replace them to load runtime uCode inst and data,
5464 * and to save runtime data when powering down.
5465 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005466static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005467{
5468 dma_addr_t pinst;
5469 dma_addr_t pdata;
5470 int rc = 0;
5471 unsigned long flags;
5472
5473 /* bits 31:0 for 3945 */
5474 pinst = priv->ucode_code.p_addr;
5475 pdata = priv->ucode_data_backup.p_addr;
5476
5477 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005478 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005479 if (rc) {
5480 spin_unlock_irqrestore(&priv->lock, flags);
5481 return rc;
5482 }
5483
5484 /* Tell bootstrap uCode where to find image to load */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005485 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
5486 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
5487 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
Zhu Yib481de92007-09-25 17:54:57 -07005488 priv->ucode_data.len);
5489
Tomas Winklera96a27f2008-10-23 23:48:56 -07005490 /* Inst byte count must be last to set up, bit 31 signals uCode
Zhu Yib481de92007-09-25 17:54:57 -07005491 * that all new ptr/size info is in place */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005492 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
Zhu Yib481de92007-09-25 17:54:57 -07005493 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
5494
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005495 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005496
5497 spin_unlock_irqrestore(&priv->lock, flags);
5498
5499 IWL_DEBUG_INFO("Runtime uCode pointers are set.\n");
5500
5501 return rc;
5502}
5503
5504/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005505 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
Zhu Yib481de92007-09-25 17:54:57 -07005506 *
5507 * Called after REPLY_ALIVE notification received from "initialize" uCode.
5508 *
Zhu Yib481de92007-09-25 17:54:57 -07005509 * Tell "initialize" uCode to go ahead and load the runtime uCode.
Ben Cahill9fbab512007-11-29 11:09:47 +08005510 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005511static void iwl3945_init_alive_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005512{
5513 /* Check alive response for "valid" sign from uCode */
5514 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
5515 /* We had an error bringing up the hardware, so take it
5516 * all the way back down so we can try again */
5517 IWL_DEBUG_INFO("Initialize Alive failed.\n");
5518 goto restart;
5519 }
5520
5521 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
5522 * This is a paranoid check, because we would not have gotten the
5523 * "initialize" alive if code weren't properly loaded. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005524 if (iwl3945_verify_ucode(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005525 /* Runtime instruction load was bad;
5526 * take it all the way back down so we can try again */
5527 IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n");
5528 goto restart;
5529 }
5530
5531 /* Send pointers to protocol/runtime uCode image ... init code will
5532 * load and launch runtime uCode, which will send us another "Alive"
5533 * notification. */
5534 IWL_DEBUG_INFO("Initialization Alive received.\n");
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005535 if (iwl3945_set_ucode_ptrs(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005536 /* Runtime instruction load won't happen;
5537 * take it all the way back down so we can try again */
5538 IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n");
5539 goto restart;
5540 }
5541 return;
5542
5543 restart:
5544 queue_work(priv->workqueue, &priv->restart);
5545}
5546
5547
Mohamed Abbas9bdf5ec2008-11-07 09:58:35 -08005548/* temporary */
5549static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw,
5550 struct sk_buff *skb);
5551
Zhu Yib481de92007-09-25 17:54:57 -07005552/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005553 * iwl3945_alive_start - called after REPLY_ALIVE notification received
Zhu Yib481de92007-09-25 17:54:57 -07005554 * from protocol/runtime uCode (initialization uCode's
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005555 * Alive gets handled by iwl3945_init_alive_start()).
Zhu Yib481de92007-09-25 17:54:57 -07005556 */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005557static void iwl3945_alive_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005558{
5559 int rc = 0;
5560 int thermal_spin = 0;
5561 u32 rfkill;
5562
5563 IWL_DEBUG_INFO("Runtime Alive received.\n");
5564
5565 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
5566 /* We had an error bringing up the hardware, so take it
5567 * all the way back down so we can try again */
5568 IWL_DEBUG_INFO("Alive failed.\n");
5569 goto restart;
5570 }
5571
5572 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
5573 * This is a paranoid check, because we would not have gotten the
5574 * "runtime" alive if code weren't properly loaded. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005575 if (iwl3945_verify_ucode(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005576 /* Runtime instruction load was bad;
5577 * take it all the way back down so we can try again */
5578 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
5579 goto restart;
5580 }
5581
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005582 iwl3945_clear_stations_table(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005583
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005584 rc = iwl_grab_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005585 if (rc) {
Tomas Winklera96a27f2008-10-23 23:48:56 -07005586 IWL_WARNING("Can not read RFKILL status from adapter\n");
Zhu Yib481de92007-09-25 17:54:57 -07005587 return;
5588 }
5589
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005590 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
Zhu Yib481de92007-09-25 17:54:57 -07005591 IWL_DEBUG_INFO("RFKILL status: 0x%x\n", rfkill);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005592 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005593
5594 if (rfkill & 0x1) {
5595 clear_bit(STATUS_RF_KILL_HW, &priv->status);
Tomas Winklera96a27f2008-10-23 23:48:56 -07005596 /* if RFKILL is not on, then wait for thermal
Zhu Yib481de92007-09-25 17:54:57 -07005597 * sensor in adapter to kick in */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005598 while (iwl3945_hw_get_temperature(priv) == 0) {
Zhu Yib481de92007-09-25 17:54:57 -07005599 thermal_spin++;
5600 udelay(10);
5601 }
5602
5603 if (thermal_spin)
5604 IWL_DEBUG_INFO("Thermal calibration took %dus\n",
5605 thermal_spin * 10);
5606 } else
5607 set_bit(STATUS_RF_KILL_HW, &priv->status);
5608
Ben Cahill9fbab512007-11-29 11:09:47 +08005609 /* After the ALIVE response, we can send commands to 3945 uCode */
Zhu Yib481de92007-09-25 17:54:57 -07005610 set_bit(STATUS_ALIVE, &priv->status);
5611
5612 /* Clear out the uCode error bit if it is set */
5613 clear_bit(STATUS_FW_ERROR, &priv->status);
5614
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005615 if (iwl3945_is_rfkill(priv))
Zhu Yib481de92007-09-25 17:54:57 -07005616 return;
5617
Johannes Berg36d68252008-05-15 12:55:26 +02005618 ieee80211_wake_queues(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -07005619
5620 priv->active_rate = priv->rates_mask;
5621 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
5622
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005623 iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(priv->power_mode));
Zhu Yib481de92007-09-25 17:54:57 -07005624
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005625 if (iwl3945_is_associated(priv)) {
5626 struct iwl3945_rxon_cmd *active_rxon =
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08005627 (struct iwl3945_rxon_cmd *)(&priv->active39_rxon);
Zhu Yib481de92007-09-25 17:54:57 -07005628
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08005629 memcpy(&priv->staging39_rxon, &priv->active39_rxon,
5630 sizeof(priv->staging39_rxon));
Zhu Yib481de92007-09-25 17:54:57 -07005631 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5632 } else {
5633 /* Initialize our rx_config data */
Zhu, Yi60294de2008-10-29 14:05:45 -07005634 iwl3945_connection_init_rx_config(priv, priv->iw_mode);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08005635 memcpy(priv->staging39_rxon.node_addr, priv->mac_addr, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07005636 }
5637
Ben Cahill9fbab512007-11-29 11:09:47 +08005638 /* Configure Bluetooth device coexistence support */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005639 iwl3945_send_bt_config(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005640
5641 /* Configure the adapter for unassociated operation */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005642 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005643
Zhu Yib481de92007-09-25 17:54:57 -07005644 iwl3945_reg_txpower_periodic(priv);
5645
Reinette Chatrefe00b5a2008-04-03 16:05:23 -07005646 iwl3945_led_register(priv);
5647
Zhu Yib481de92007-09-25 17:54:57 -07005648 IWL_DEBUG_INFO("ALIVE processing complete.\n");
Rick Farringtona9f46782008-03-18 14:57:49 -07005649 set_bit(STATUS_READY, &priv->status);
Zhu Yi5a669262008-01-14 17:46:18 -08005650 wake_up_interruptible(&priv->wait_command_queue);
Zhu Yib481de92007-09-25 17:54:57 -07005651
5652 if (priv->error_recovering)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005653 iwl3945_error_recovery(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005654
Mohamed Abbas9bdf5ec2008-11-07 09:58:35 -08005655 /* reassociate for ADHOC mode */
5656 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
5657 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
5658 priv->vif);
5659 if (beacon)
5660 iwl3945_mac_beacon_update(priv->hw, beacon);
5661 }
5662
Zhu Yib481de92007-09-25 17:54:57 -07005663 return;
5664
5665 restart:
5666 queue_work(priv->workqueue, &priv->restart);
5667}
5668
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005669static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
Zhu Yib481de92007-09-25 17:54:57 -07005670
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005671static void __iwl3945_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005672{
5673 unsigned long flags;
5674 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
5675 struct ieee80211_conf *conf = NULL;
5676
5677 IWL_DEBUG_INFO(DRV_NAME " is going down\n");
5678
5679 conf = ieee80211_get_hw_conf(priv->hw);
5680
5681 if (!exit_pending)
5682 set_bit(STATUS_EXIT_PENDING, &priv->status);
5683
Mohamed Abbasab53d8a2008-03-25 16:33:36 -07005684 iwl3945_led_unregister(priv);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005685 iwl3945_clear_stations_table(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005686
5687 /* Unblock any waiting calls */
5688 wake_up_interruptible_all(&priv->wait_command_queue);
5689
Zhu Yib481de92007-09-25 17:54:57 -07005690 /* Wipe out the EXIT_PENDING status bit if we are not actually
5691 * exiting the module */
5692 if (!exit_pending)
5693 clear_bit(STATUS_EXIT_PENDING, &priv->status);
5694
5695 /* stop and reset the on-board processor */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005696 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Zhu Yib481de92007-09-25 17:54:57 -07005697
5698 /* tell the device to stop sending interrupts */
Mohamed Abbas0359fac2008-03-28 16:21:08 -07005699 spin_lock_irqsave(&priv->lock, flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005700 iwl3945_disable_interrupts(priv);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07005701 spin_unlock_irqrestore(&priv->lock, flags);
5702 iwl_synchronize_irq(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005703
5704 if (priv->mac80211_registered)
5705 ieee80211_stop_queues(priv->hw);
5706
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005707 /* If we have not previously called iwl3945_init() then
Zhu Yib481de92007-09-25 17:54:57 -07005708 * clear all bits but the RF Kill and SUSPEND bits and return */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005709 if (!iwl3945_is_init(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005710 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5711 STATUS_RF_KILL_HW |
5712 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5713 STATUS_RF_KILL_SW |
Reinette Chatre97888642008-02-06 11:20:38 -08005714 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5715 STATUS_GEO_CONFIGURED |
Zhu Yib481de92007-09-25 17:54:57 -07005716 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08005717 STATUS_IN_SUSPEND |
5718 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5719 STATUS_EXIT_PENDING;
Zhu Yib481de92007-09-25 17:54:57 -07005720 goto exit;
5721 }
5722
5723 /* ...otherwise clear out all the status bits but the RF Kill and
5724 * SUSPEND bits and continue taking the NIC down. */
5725 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
5726 STATUS_RF_KILL_HW |
5727 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
5728 STATUS_RF_KILL_SW |
Reinette Chatre97888642008-02-06 11:20:38 -08005729 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
5730 STATUS_GEO_CONFIGURED |
Zhu Yib481de92007-09-25 17:54:57 -07005731 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
5732 STATUS_IN_SUSPEND |
5733 test_bit(STATUS_FW_ERROR, &priv->status) <<
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08005734 STATUS_FW_ERROR |
5735 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
5736 STATUS_EXIT_PENDING;
Zhu Yib481de92007-09-25 17:54:57 -07005737
5738 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005739 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
Zhu Yib481de92007-09-25 17:54:57 -07005740 spin_unlock_irqrestore(&priv->lock, flags);
5741
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005742 iwl3945_hw_txq_ctx_stop(priv);
5743 iwl3945_hw_rxq_stop(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005744
5745 spin_lock_irqsave(&priv->lock, flags);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005746 if (!iwl_grab_nic_access(priv)) {
5747 iwl_write_prph(priv, APMG_CLK_DIS_REG,
Zhu Yib481de92007-09-25 17:54:57 -07005748 APMG_CLK_VAL_DMA_CLK_RQT);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005749 iwl_release_nic_access(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005750 }
5751 spin_unlock_irqrestore(&priv->lock, flags);
5752
5753 udelay(5);
5754
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005755 iwl3945_hw_nic_stop_master(priv);
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005756 iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005757 iwl3945_hw_nic_reset(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005758
5759 exit:
Tomas Winkler3d24a9f2008-12-19 10:37:07 +08005760 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -07005761
5762 if (priv->ibss_beacon)
5763 dev_kfree_skb(priv->ibss_beacon);
5764 priv->ibss_beacon = NULL;
5765
5766 /* clear out any free frames */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005767 iwl3945_clear_free_frames(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005768}
5769
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005770static void iwl3945_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005771{
5772 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005773 __iwl3945_down(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005774 mutex_unlock(&priv->mutex);
Zhu Yib24d22b2007-12-19 13:59:52 +08005775
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005776 iwl3945_cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005777}
5778
5779#define MAX_HW_RESTARTS 5
5780
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005781static int __iwl3945_up(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07005782{
5783 int rc, i;
5784
5785 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
5786 IWL_WARNING("Exit pending; will not bring the NIC up\n");
5787 return -EIO;
5788 }
5789
5790 if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
5791 IWL_WARNING("Radio disabled by SW RF kill (module "
5792 "parameter)\n");
Zhu Yie655b9f2008-01-24 02:19:38 -08005793 return -ENODEV;
5794 }
5795
Reinette Chatree903fbd2008-01-30 22:05:15 -08005796 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
Tomas Winklera96a27f2008-10-23 23:48:56 -07005797 IWL_ERROR("ucode not available for device bring up\n");
Reinette Chatree903fbd2008-01-30 22:05:15 -08005798 return -EIO;
5799 }
5800
Zhu Yie655b9f2008-01-24 02:19:38 -08005801 /* If platform's RF_KILL switch is NOT set to KILL */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005802 if (iwl_read32(priv, CSR_GP_CNTRL) &
Zhu Yie655b9f2008-01-24 02:19:38 -08005803 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
5804 clear_bit(STATUS_RF_KILL_HW, &priv->status);
5805 else {
5806 set_bit(STATUS_RF_KILL_HW, &priv->status);
5807 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
5808 IWL_WARNING("Radio disabled by HW RF Kill switch\n");
5809 return -ENODEV;
5810 }
Zhu Yib481de92007-09-25 17:54:57 -07005811 }
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02005812
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005813 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Zhu Yib481de92007-09-25 17:54:57 -07005814
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005815 rc = iwl3945_hw_nic_init(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005816 if (rc) {
5817 IWL_ERROR("Unable to int nic\n");
5818 return rc;
5819 }
5820
5821 /* make sure rfkill handshake bits are cleared */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005822 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5823 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Zhu Yib481de92007-09-25 17:54:57 -07005824 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
5825
5826 /* clear (again), then enable host interrupts */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005827 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005828 iwl3945_enable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005829
5830 /* really make sure rfkill handshake bits are cleared */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08005831 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
5832 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Zhu Yib481de92007-09-25 17:54:57 -07005833
5834 /* Copy original ucode data image from disk into backup cache.
5835 * This will be used to initialize the on-board processor's
5836 * data SRAM for a clean start when the runtime program first loads. */
5837 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
Zhu Yi5a669262008-01-14 17:46:18 -08005838 priv->ucode_data.len);
Zhu Yib481de92007-09-25 17:54:57 -07005839
Zhu Yie655b9f2008-01-24 02:19:38 -08005840 /* We return success when we resume from suspend and rf_kill is on. */
5841 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
5842 return 0;
5843
Zhu Yib481de92007-09-25 17:54:57 -07005844 for (i = 0; i < MAX_HW_RESTARTS; i++) {
5845
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005846 iwl3945_clear_stations_table(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005847
5848 /* load bootstrap state machine,
5849 * load bootstrap program into processor's memory,
5850 * prepare to load the "initialize" uCode */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005851 rc = iwl3945_load_bsm(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005852
5853 if (rc) {
5854 IWL_ERROR("Unable to set up bootstrap uCode: %d\n", rc);
5855 continue;
5856 }
5857
5858 /* start card; "initialize" will load runtime ucode */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005859 iwl3945_nic_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005860
Zhu Yib481de92007-09-25 17:54:57 -07005861 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
5862
5863 return 0;
5864 }
5865
5866 set_bit(STATUS_EXIT_PENDING, &priv->status);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005867 __iwl3945_down(priv);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08005868 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07005869
5870 /* tried to restart and config the device for as long as our
5871 * patience could withstand */
5872 IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
5873 return -EIO;
5874}
5875
5876
5877/*****************************************************************************
5878 *
5879 * Workqueue callbacks
5880 *
5881 *****************************************************************************/
5882
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005883static void iwl3945_bg_init_alive_start(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07005884{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005885 struct iwl_priv *priv =
5886 container_of(data, struct iwl_priv, init_alive_start.work);
Zhu Yib481de92007-09-25 17:54:57 -07005887
5888 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5889 return;
5890
5891 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005892 iwl3945_init_alive_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005893 mutex_unlock(&priv->mutex);
5894}
5895
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005896static void iwl3945_bg_alive_start(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07005897{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005898 struct iwl_priv *priv =
5899 container_of(data, struct iwl_priv, alive_start.work);
Zhu Yib481de92007-09-25 17:54:57 -07005900
5901 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5902 return;
5903
5904 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005905 iwl3945_alive_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005906 mutex_unlock(&priv->mutex);
5907}
5908
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005909static void iwl3945_bg_rf_kill(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -07005910{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005911 struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
Zhu Yib481de92007-09-25 17:54:57 -07005912
5913 wake_up_interruptible(&priv->wait_command_queue);
5914
5915 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5916 return;
5917
5918 mutex_lock(&priv->mutex);
5919
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005920 if (!iwl3945_is_rfkill(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005921 IWL_DEBUG(IWL_DL_INFO | IWL_DL_RF_KILL,
5922 "HW and/or SW RF Kill no longer active, restarting "
5923 "device\n");
5924 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
5925 queue_work(priv->workqueue, &priv->restart);
5926 } else {
5927
5928 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
5929 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
5930 "disabled by SW switch\n");
5931 else
5932 IWL_WARNING("Radio Frequency Kill Switch is On:\n"
5933 "Kill switch must be turned off for "
5934 "wireless networking to work.\n");
5935 }
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08005936
Zhu Yib481de92007-09-25 17:54:57 -07005937 mutex_unlock(&priv->mutex);
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02005938 iwl3945_rfkill_set_hw_state(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005939}
5940
5941#define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
5942
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005943static void iwl3945_bg_scan_check(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07005944{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005945 struct iwl_priv *priv =
5946 container_of(data, struct iwl_priv, scan_check.work);
Zhu Yib481de92007-09-25 17:54:57 -07005947
5948 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
5949 return;
5950
5951 mutex_lock(&priv->mutex);
5952 if (test_bit(STATUS_SCANNING, &priv->status) ||
5953 test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
5954 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN,
5955 "Scan completion watchdog resetting adapter (%dms)\n",
5956 jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
Mohamed Abbas15e869d2007-10-25 17:15:46 +08005957
Zhu Yib481de92007-09-25 17:54:57 -07005958 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005959 iwl3945_send_scan_abort(priv);
Zhu Yib481de92007-09-25 17:54:57 -07005960 }
5961 mutex_unlock(&priv->mutex);
5962}
5963
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005964static void iwl3945_bg_request_scan(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07005965{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08005966 struct iwl_priv *priv =
5967 container_of(data, struct iwl_priv, request_scan);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005968 struct iwl3945_host_cmd cmd = {
Zhu Yib481de92007-09-25 17:54:57 -07005969 .id = REPLY_SCAN_CMD,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005970 .len = sizeof(struct iwl3945_scan_cmd),
Zhu Yib481de92007-09-25 17:54:57 -07005971 .meta.flags = CMD_SIZE_HUGE,
5972 };
5973 int rc = 0;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005974 struct iwl3945_scan_cmd *scan;
Zhu Yib481de92007-09-25 17:54:57 -07005975 struct ieee80211_conf *conf = NULL;
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08005976 u8 n_probes = 2;
Johannes Berg8318d782008-01-24 19:38:38 +01005977 enum ieee80211_band band;
John W. Linville9387b7c2008-09-30 20:59:05 -04005978 DECLARE_SSID_BUF(ssid);
Zhu Yib481de92007-09-25 17:54:57 -07005979
5980 conf = ieee80211_get_hw_conf(priv->hw);
5981
5982 mutex_lock(&priv->mutex);
5983
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08005984 if (!iwl3945_is_ready(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07005985 IWL_WARNING("request scan called when driver not ready.\n");
5986 goto done;
5987 }
5988
Tomas Winklera96a27f2008-10-23 23:48:56 -07005989 /* Make sure the scan wasn't canceled before this queued work
Zhu Yib481de92007-09-25 17:54:57 -07005990 * was given the chance to run... */
5991 if (!test_bit(STATUS_SCANNING, &priv->status))
5992 goto done;
5993
5994 /* This should never be called or scheduled if there is currently
5995 * a scan active in the hardware. */
5996 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
5997 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
5998 "Ignoring second request.\n");
5999 rc = -EIO;
6000 goto done;
6001 }
6002
6003 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
6004 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
6005 goto done;
6006 }
6007
6008 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
6009 IWL_DEBUG_HC("Scan request while abort pending. Queuing.\n");
6010 goto done;
6011 }
6012
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006013 if (iwl3945_is_rfkill(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006014 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
6015 goto done;
6016 }
6017
6018 if (!test_bit(STATUS_READY, &priv->status)) {
6019 IWL_DEBUG_HC("Scan request while uninitialized. Queuing.\n");
6020 goto done;
6021 }
6022
6023 if (!priv->scan_bands) {
6024 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
6025 goto done;
6026 }
6027
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006028 if (!priv->scan39) {
6029 priv->scan39 = kmalloc(sizeof(struct iwl3945_scan_cmd) +
Zhu Yib481de92007-09-25 17:54:57 -07006030 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006031 if (!priv->scan39) {
Zhu Yib481de92007-09-25 17:54:57 -07006032 rc = -ENOMEM;
6033 goto done;
6034 }
6035 }
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006036 scan = priv->scan39;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006037 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
Zhu Yib481de92007-09-25 17:54:57 -07006038
6039 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
6040 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
6041
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006042 if (iwl3945_is_associated(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006043 u16 interval = 0;
6044 u32 extra;
6045 u32 suspend_time = 100;
6046 u32 scan_suspend_time = 100;
6047 unsigned long flags;
6048
6049 IWL_DEBUG_INFO("Scanning while associated...\n");
6050
6051 spin_lock_irqsave(&priv->lock, flags);
6052 interval = priv->beacon_int;
6053 spin_unlock_irqrestore(&priv->lock, flags);
6054
6055 scan->suspend_time = 0;
Mohamed Abbas15e869d2007-10-25 17:15:46 +08006056 scan->max_out_time = cpu_to_le32(200 * 1024);
Zhu Yib481de92007-09-25 17:54:57 -07006057 if (!interval)
6058 interval = suspend_time;
6059 /*
6060 * suspend time format:
6061 * 0-19: beacon interval in usec (time before exec.)
6062 * 20-23: 0
6063 * 24-31: number of beacons (suspend between channels)
6064 */
6065
6066 extra = (suspend_time / interval) << 24;
6067 scan_suspend_time = 0xFF0FFFFF &
6068 (extra | ((suspend_time % interval) * 1024));
6069
6070 scan->suspend_time = cpu_to_le32(scan_suspend_time);
6071 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
6072 scan_suspend_time, interval);
6073 }
6074
6075 /* We should add the ability for user to lock to PASSIVE ONLY */
6076 if (priv->one_direct_scan) {
6077 IWL_DEBUG_SCAN
6078 ("Kicking off one direct scan for '%s'\n",
John W. Linville9387b7c2008-09-30 20:59:05 -04006079 print_ssid(ssid, priv->direct_ssid,
6080 priv->direct_ssid_len));
Zhu Yib481de92007-09-25 17:54:57 -07006081 scan->direct_scan[0].id = WLAN_EID_SSID;
6082 scan->direct_scan[0].len = priv->direct_ssid_len;
6083 memcpy(scan->direct_scan[0].ssid,
6084 priv->direct_ssid, priv->direct_ssid_len);
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08006085 n_probes++;
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08006086 } else
Bill Moss786b4552008-04-17 16:03:40 -07006087 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
Zhu Yib481de92007-09-25 17:54:57 -07006088
6089 /* We don't build a direct scan probe request; the uCode will do
6090 * that based on the direct_mask added to each channel entry */
6091 scan->tx_cmd.len = cpu_to_le16(
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006092 iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
Johannes Berg430cfe92008-10-28 18:06:02 +01006093 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
Zhu Yib481de92007-09-25 17:54:57 -07006094 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08006095 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
Zhu Yib481de92007-09-25 17:54:57 -07006096 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
6097
6098 /* flags + rate selection */
6099
Ron Rindjunsky66b50042008-06-25 16:46:31 +08006100 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
Zhu Yib481de92007-09-25 17:54:57 -07006101 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
6102 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
6103 scan->good_CRC_th = 0;
Johannes Berg8318d782008-01-24 19:38:38 +01006104 band = IEEE80211_BAND_2GHZ;
Ron Rindjunsky66b50042008-06-25 16:46:31 +08006105 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
Zhu Yib481de92007-09-25 17:54:57 -07006106 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
6107 scan->good_CRC_th = IWL_GOOD_CRC_TH;
Johannes Berg8318d782008-01-24 19:38:38 +01006108 band = IEEE80211_BAND_5GHZ;
Ron Rindjunsky66b50042008-06-25 16:46:31 +08006109 } else {
Zhu Yib481de92007-09-25 17:54:57 -07006110 IWL_WARNING("Invalid scan band count\n");
6111 goto done;
6112 }
6113
6114 /* select Rx antennas */
6115 scan->flags |= iwl3945_get_antenna_flags(priv);
6116
Johannes Berg05c914f2008-09-11 00:01:58 +02006117 if (priv->iw_mode == NL80211_IFTYPE_MONITOR)
Zhu Yib481de92007-09-25 17:54:57 -07006118 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
6119
Abhijeet Kolekarf9340522008-09-03 11:26:58 +08006120 scan->channel_count =
6121 iwl3945_get_channels_for_scan(priv, band, 1, /* active */
6122 n_probes,
6123 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
Zhu Yib481de92007-09-25 17:54:57 -07006124
Reinette Chatre14b54332008-11-04 12:21:35 -08006125 if (scan->channel_count == 0) {
6126 IWL_DEBUG_SCAN("channel count %d\n", scan->channel_count);
6127 goto done;
6128 }
6129
Zhu Yib481de92007-09-25 17:54:57 -07006130 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006131 scan->channel_count * sizeof(struct iwl3945_scan_channel);
Zhu Yib481de92007-09-25 17:54:57 -07006132 cmd.data = scan;
6133 scan->len = cpu_to_le16(cmd.len);
6134
6135 set_bit(STATUS_SCAN_HW, &priv->status);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006136 rc = iwl3945_send_cmd_sync(priv, &cmd);
Zhu Yib481de92007-09-25 17:54:57 -07006137 if (rc)
6138 goto done;
6139
6140 queue_delayed_work(priv->workqueue, &priv->scan_check,
6141 IWL_SCAN_CHECK_WATCHDOG);
6142
6143 mutex_unlock(&priv->mutex);
6144 return;
6145
6146 done:
Mohamed Abbas2420ebc2008-11-04 12:21:34 -08006147 /* can not perform scan make sure we clear scanning
6148 * bits from status so next scan request can be performed.
6149 * if we dont clear scanning status bit here all next scan
6150 * will fail
6151 */
6152 clear_bit(STATUS_SCAN_HW, &priv->status);
6153 clear_bit(STATUS_SCANNING, &priv->status);
6154
Ian Schram01ebd062007-10-25 17:15:22 +08006155 /* inform mac80211 scan aborted */
Zhu Yib481de92007-09-25 17:54:57 -07006156 queue_work(priv->workqueue, &priv->scan_completed);
6157 mutex_unlock(&priv->mutex);
6158}
6159
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006160static void iwl3945_bg_up(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07006161{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006162 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
Zhu Yib481de92007-09-25 17:54:57 -07006163
6164 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6165 return;
6166
6167 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006168 __iwl3945_up(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006169 mutex_unlock(&priv->mutex);
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02006170 iwl3945_rfkill_set_hw_state(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006171}
6172
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006173static void iwl3945_bg_restart(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07006174{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006175 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Zhu Yib481de92007-09-25 17:54:57 -07006176
6177 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6178 return;
6179
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006180 iwl3945_down(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006181 queue_work(priv->workqueue, &priv->up);
6182}
6183
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006184static void iwl3945_bg_rx_replenish(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07006185{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006186 struct iwl_priv *priv =
6187 container_of(data, struct iwl_priv, rx_replenish);
Zhu Yib481de92007-09-25 17:54:57 -07006188
6189 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6190 return;
6191
6192 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006193 iwl3945_rx_replenish(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006194 mutex_unlock(&priv->mutex);
6195}
6196
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08006197#define IWL_DELAY_NEXT_SCAN (HZ*2)
6198
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006199static void iwl3945_post_associate(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07006200{
Zhu Yib481de92007-09-25 17:54:57 -07006201 int rc = 0;
6202 struct ieee80211_conf *conf = NULL;
6203
Johannes Berg05c914f2008-09-11 00:01:58 +02006204 if (priv->iw_mode == NL80211_IFTYPE_AP) {
Tomas Winkler3ac7f142008-07-21 02:40:14 +03006205 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
Zhu Yib481de92007-09-25 17:54:57 -07006206 return;
6207 }
6208
6209
Johannes Berge1749612008-10-27 15:59:26 -07006210 IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006211 priv->assoc_id, priv->active39_rxon.bssid_addr);
Zhu Yib481de92007-09-25 17:54:57 -07006212
6213 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6214 return;
6215
Abhijeet Kolekar322a9812008-09-03 11:26:27 +08006216 if (!priv->vif || !priv->is_open)
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08006217 return;
Abhijeet Kolekar322a9812008-09-03 11:26:27 +08006218
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006219 iwl3945_scan_cancel_timeout(priv, 200);
Mohamed Abbas15e869d2007-10-25 17:15:46 +08006220
Zhu Yib481de92007-09-25 17:54:57 -07006221 conf = ieee80211_get_hw_conf(priv->hw);
6222
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006223 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006224 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006225
Tomas Winkler28afaf92008-12-19 10:37:06 +08006226 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006227 iwl3945_setup_rxon_timing(priv);
6228 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Zhu Yib481de92007-09-25 17:54:57 -07006229 sizeof(priv->rxon_timing), &priv->rxon_timing);
6230 if (rc)
6231 IWL_WARNING("REPLY_RXON_TIMING failed - "
6232 "Attempting to continue.\n");
6233
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006234 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006235
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006236 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
Zhu Yib481de92007-09-25 17:54:57 -07006237
6238 IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
6239 priv->assoc_id, priv->beacon_int);
6240
6241 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006242 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006243 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006244 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006245
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006246 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
Zhu Yib481de92007-09-25 17:54:57 -07006247 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006248 priv->staging39_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006249 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006250 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006251
Johannes Berg05c914f2008-09-11 00:01:58 +02006252 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006253 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07006254
6255 }
6256
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006257 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006258
6259 switch (priv->iw_mode) {
Johannes Berg05c914f2008-09-11 00:01:58 +02006260 case NL80211_IFTYPE_STATION:
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006261 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
Zhu Yib481de92007-09-25 17:54:57 -07006262 break;
6263
Johannes Berg05c914f2008-09-11 00:01:58 +02006264 case NL80211_IFTYPE_ADHOC:
Zhu Yib481de92007-09-25 17:54:57 -07006265
Abhijeet Kolekarce546fd2008-11-19 15:32:22 -08006266 priv->assoc_id = 1;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006267 iwl3945_add_station(priv, priv->bssid, 0, 0);
Zhu Yib481de92007-09-25 17:54:57 -07006268 iwl3945_sync_sta(priv, IWL_STA_ID,
Johannes Berg8318d782008-01-24 19:38:38 +01006269 (priv->band == IEEE80211_BAND_5GHZ) ?
Zhu Yib481de92007-09-25 17:54:57 -07006270 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
6271 CMD_ASYNC);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006272 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
6273 iwl3945_send_beacon_cmd(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006274
6275 break;
6276
6277 default:
6278 IWL_ERROR("%s Should not be called in %d mode\n",
Tomas Winkler3ac7f142008-07-21 02:40:14 +03006279 __func__, priv->iw_mode);
Zhu Yib481de92007-09-25 17:54:57 -07006280 break;
6281 }
6282
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006283 iwl3945_activate_qos(priv, 0);
Ron Rindjunsky292ae172008-02-06 11:20:39 -08006284
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08006285 /* we have just associated, don't start scan too early */
6286 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006287}
6288
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006289static void iwl3945_bg_abort_scan(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -07006290{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006291 struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
Zhu Yib481de92007-09-25 17:54:57 -07006292
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006293 if (!iwl3945_is_ready(priv))
Zhu Yib481de92007-09-25 17:54:57 -07006294 return;
6295
6296 mutex_lock(&priv->mutex);
6297
6298 set_bit(STATUS_SCAN_ABORTING, &priv->status);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006299 iwl3945_send_scan_abort(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006300
6301 mutex_unlock(&priv->mutex);
6302}
6303
Johannes Berge8975582008-10-09 12:18:51 +02006304static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
Zhu Yi76bb77e2007-11-22 10:53:22 +08006305
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006306static void iwl3945_bg_scan_completed(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -07006307{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006308 struct iwl_priv *priv =
6309 container_of(work, struct iwl_priv, scan_completed);
Zhu Yib481de92007-09-25 17:54:57 -07006310
6311 IWL_DEBUG(IWL_DL_INFO | IWL_DL_SCAN, "SCAN complete scan\n");
6312
6313 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
6314 return;
6315
Zhu Yia0646472007-12-20 14:10:01 +08006316 if (test_bit(STATUS_CONF_PENDING, &priv->status))
Johannes Berge8975582008-10-09 12:18:51 +02006317 iwl3945_mac_config(priv->hw, 0);
Zhu Yi76bb77e2007-11-22 10:53:22 +08006318
Zhu Yib481de92007-09-25 17:54:57 -07006319 ieee80211_scan_completed(priv->hw);
6320
6321 /* Since setting the TXPOWER may have been deferred while
6322 * performing the scan, fire one off */
6323 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006324 iwl3945_hw_reg_send_txpower(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006325 mutex_unlock(&priv->mutex);
6326}
6327
6328/*****************************************************************************
6329 *
6330 * mac80211 entry point functions
6331 *
6332 *****************************************************************************/
6333
Zhu Yi5a669262008-01-14 17:46:18 -08006334#define UCODE_READY_TIMEOUT (2 * HZ)
6335
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006336static int iwl3945_mac_start(struct ieee80211_hw *hw)
Zhu Yib481de92007-09-25 17:54:57 -07006337{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006338 struct iwl_priv *priv = hw->priv;
Zhu Yi5a669262008-01-14 17:46:18 -08006339 int ret;
Zhu Yib481de92007-09-25 17:54:57 -07006340
6341 IWL_DEBUG_MAC80211("enter\n");
6342
Zhu Yi5a669262008-01-14 17:46:18 -08006343 if (pci_enable_device(priv->pci_dev)) {
6344 IWL_ERROR("Fail to pci_enable_device\n");
6345 return -ENODEV;
6346 }
6347 pci_restore_state(priv->pci_dev);
6348 pci_enable_msi(priv->pci_dev);
6349
6350 ret = request_irq(priv->pci_dev->irq, iwl3945_isr, IRQF_SHARED,
6351 DRV_NAME, priv);
6352 if (ret) {
6353 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
6354 goto out_disable_msi;
6355 }
6356
Zhu Yib481de92007-09-25 17:54:57 -07006357 /* we should be verifying the device is ready to be opened */
6358 mutex_lock(&priv->mutex);
6359
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006360 memset(&priv->staging39_rxon, 0, sizeof(struct iwl3945_rxon_cmd));
Zhu Yi5a669262008-01-14 17:46:18 -08006361 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
6362 * ucode filename and max sizes are card-specific. */
6363
6364 if (!priv->ucode_code.len) {
6365 ret = iwl3945_read_ucode(priv);
6366 if (ret) {
6367 IWL_ERROR("Could not read microcode: %d\n", ret);
6368 mutex_unlock(&priv->mutex);
6369 goto out_release_irq;
6370 }
6371 }
6372
Zhu Yie655b9f2008-01-24 02:19:38 -08006373 ret = __iwl3945_up(priv);
Zhu Yi5a669262008-01-14 17:46:18 -08006374
Zhu Yib481de92007-09-25 17:54:57 -07006375 mutex_unlock(&priv->mutex);
Zhu Yi5a669262008-01-14 17:46:18 -08006376
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02006377 iwl3945_rfkill_set_hw_state(priv);
6378
Zhu Yie655b9f2008-01-24 02:19:38 -08006379 if (ret)
6380 goto out_release_irq;
6381
6382 IWL_DEBUG_INFO("Start UP work.\n");
6383
6384 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
6385 return 0;
6386
Zhu Yi5a669262008-01-14 17:46:18 -08006387 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
6388 * mac80211 will not be run successfully. */
6389 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
6390 test_bit(STATUS_READY, &priv->status),
6391 UCODE_READY_TIMEOUT);
6392 if (!ret) {
6393 if (!test_bit(STATUS_READY, &priv->status)) {
6394 IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
6395 jiffies_to_msecs(UCODE_READY_TIMEOUT));
6396 ret = -ETIMEDOUT;
6397 goto out_release_irq;
6398 }
6399 }
6400
Zhu Yie655b9f2008-01-24 02:19:38 -08006401 priv->is_open = 1;
Zhu Yib481de92007-09-25 17:54:57 -07006402 IWL_DEBUG_MAC80211("leave\n");
6403 return 0;
Zhu Yi5a669262008-01-14 17:46:18 -08006404
6405out_release_irq:
6406 free_irq(priv->pci_dev->irq, priv);
6407out_disable_msi:
6408 pci_disable_msi(priv->pci_dev);
Zhu Yie655b9f2008-01-24 02:19:38 -08006409 pci_disable_device(priv->pci_dev);
6410 priv->is_open = 0;
6411 IWL_DEBUG_MAC80211("leave - failed\n");
Zhu Yi5a669262008-01-14 17:46:18 -08006412 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07006413}
6414
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006415static void iwl3945_mac_stop(struct ieee80211_hw *hw)
Zhu Yib481de92007-09-25 17:54:57 -07006416{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006417 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006418
6419 IWL_DEBUG_MAC80211("enter\n");
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08006420
Zhu Yie655b9f2008-01-24 02:19:38 -08006421 if (!priv->is_open) {
6422 IWL_DEBUG_MAC80211("leave - skip\n");
6423 return;
6424 }
6425
Zhu Yib481de92007-09-25 17:54:57 -07006426 priv->is_open = 0;
Zhu Yi5a669262008-01-14 17:46:18 -08006427
6428 if (iwl3945_is_ready_rf(priv)) {
Zhu Yie655b9f2008-01-24 02:19:38 -08006429 /* stop mac, cancel any scan request and clear
6430 * RXON_FILTER_ASSOC_MSK BIT
6431 */
Zhu Yi5a669262008-01-14 17:46:18 -08006432 mutex_lock(&priv->mutex);
6433 iwl3945_scan_cancel_timeout(priv, 100);
Mohamed Abbasfde35712007-11-29 11:10:15 +08006434 mutex_unlock(&priv->mutex);
Mohamed Abbasfde35712007-11-29 11:10:15 +08006435 }
6436
Zhu Yi5a669262008-01-14 17:46:18 -08006437 iwl3945_down(priv);
6438
6439 flush_workqueue(priv->workqueue);
6440 free_irq(priv->pci_dev->irq, priv);
6441 pci_disable_msi(priv->pci_dev);
6442 pci_save_state(priv->pci_dev);
6443 pci_disable_device(priv->pci_dev);
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08006444
Zhu Yib481de92007-09-25 17:54:57 -07006445 IWL_DEBUG_MAC80211("leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07006446}
6447
Johannes Berge039fa42008-05-15 12:55:29 +02006448static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Zhu Yib481de92007-09-25 17:54:57 -07006449{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006450 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006451
6452 IWL_DEBUG_MAC80211("enter\n");
6453
Zhu Yib481de92007-09-25 17:54:57 -07006454 IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
Johannes Berge039fa42008-05-15 12:55:29 +02006455 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Zhu Yib481de92007-09-25 17:54:57 -07006456
Johannes Berge039fa42008-05-15 12:55:29 +02006457 if (iwl3945_tx_skb(priv, skb))
Zhu Yib481de92007-09-25 17:54:57 -07006458 dev_kfree_skb_any(skb);
6459
6460 IWL_DEBUG_MAC80211("leave\n");
Reinette Chatre637f8832009-01-19 15:30:32 -08006461 return NETDEV_TX_OK;
Zhu Yib481de92007-09-25 17:54:57 -07006462}
6463
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006464static int iwl3945_mac_add_interface(struct ieee80211_hw *hw,
Zhu Yib481de92007-09-25 17:54:57 -07006465 struct ieee80211_if_init_conf *conf)
6466{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006467 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006468 unsigned long flags;
6469
Johannes Berg32bfd352007-12-19 01:31:26 +01006470 IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
Zhu Yib481de92007-09-25 17:54:57 -07006471
Johannes Berg32bfd352007-12-19 01:31:26 +01006472 if (priv->vif) {
6473 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
Tomas Winkler864792e2007-11-27 21:00:52 +02006474 return -EOPNOTSUPP;
Zhu Yib481de92007-09-25 17:54:57 -07006475 }
6476
6477 spin_lock_irqsave(&priv->lock, flags);
Johannes Berg32bfd352007-12-19 01:31:26 +01006478 priv->vif = conf->vif;
Zhu, Yi60294de2008-10-29 14:05:45 -07006479 priv->iw_mode = conf->type;
Zhu Yib481de92007-09-25 17:54:57 -07006480
6481 spin_unlock_irqrestore(&priv->lock, flags);
6482
6483 mutex_lock(&priv->mutex);
Tomas Winkler864792e2007-11-27 21:00:52 +02006484
6485 if (conf->mac_addr) {
Johannes Berge1749612008-10-27 15:59:26 -07006486 IWL_DEBUG_MAC80211("Set: %pM\n", conf->mac_addr);
Tomas Winkler864792e2007-11-27 21:00:52 +02006487 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
6488 }
6489
Zhu Yi5a669262008-01-14 17:46:18 -08006490 if (iwl3945_is_ready(priv))
6491 iwl3945_set_mode(priv, conf->type);
Zhu Yib481de92007-09-25 17:54:57 -07006492
Zhu Yib481de92007-09-25 17:54:57 -07006493 mutex_unlock(&priv->mutex);
6494
Zhu Yi5a669262008-01-14 17:46:18 -08006495 IWL_DEBUG_MAC80211("leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07006496 return 0;
6497}
6498
6499/**
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006500 * iwl3945_mac_config - mac80211 config callback
Zhu Yib481de92007-09-25 17:54:57 -07006501 *
6502 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
6503 * be set inappropriately and the driver currently sets the hardware up to
6504 * use it whenever needed.
6505 */
Johannes Berge8975582008-10-09 12:18:51 +02006506static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
Zhu Yib481de92007-09-25 17:54:57 -07006507{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006508 struct iwl_priv *priv = hw->priv;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08006509 const struct iwl_channel_info *ch_info;
Johannes Berge8975582008-10-09 12:18:51 +02006510 struct ieee80211_conf *conf = &hw->conf;
Zhu Yib481de92007-09-25 17:54:57 -07006511 unsigned long flags;
Zhu Yi76bb77e2007-11-22 10:53:22 +08006512 int ret = 0;
Zhu Yib481de92007-09-25 17:54:57 -07006513
6514 mutex_lock(&priv->mutex);
Johannes Berg8318d782008-01-24 19:38:38 +01006515 IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
Zhu Yib481de92007-09-25 17:54:57 -07006516
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006517 if (!iwl3945_is_ready(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006518 IWL_DEBUG_MAC80211("leave - not ready\n");
Zhu Yi76bb77e2007-11-22 10:53:22 +08006519 ret = -EIO;
6520 goto out;
Zhu Yib481de92007-09-25 17:54:57 -07006521 }
6522
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006523 if (unlikely(!iwl3945_param_disable_hw_scan &&
Zhu Yib481de92007-09-25 17:54:57 -07006524 test_bit(STATUS_SCANNING, &priv->status))) {
Zhu Yia0646472007-12-20 14:10:01 +08006525 IWL_DEBUG_MAC80211("leave - scanning\n");
6526 set_bit(STATUS_CONF_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07006527 mutex_unlock(&priv->mutex);
Zhu Yia0646472007-12-20 14:10:01 +08006528 return 0;
Zhu Yib481de92007-09-25 17:54:57 -07006529 }
6530
6531 spin_lock_irqsave(&priv->lock, flags);
6532
Johannes Berg8318d782008-01-24 19:38:38 +01006533 ch_info = iwl3945_get_channel_info(priv, conf->channel->band,
6534 conf->channel->hw_value);
Zhu Yib481de92007-09-25 17:54:57 -07006535 if (!is_channel_valid(ch_info)) {
Ron Rindjunsky66b50042008-06-25 16:46:31 +08006536 IWL_DEBUG_SCAN("Channel %d [%d] is INVALID for this band.\n",
Johannes Berg8318d782008-01-24 19:38:38 +01006537 conf->channel->hw_value, conf->channel->band);
Zhu Yib481de92007-09-25 17:54:57 -07006538 IWL_DEBUG_MAC80211("leave - invalid channel\n");
6539 spin_unlock_irqrestore(&priv->lock, flags);
Zhu Yi76bb77e2007-11-22 10:53:22 +08006540 ret = -EINVAL;
6541 goto out;
Zhu Yib481de92007-09-25 17:54:57 -07006542 }
6543
Johannes Berg8318d782008-01-24 19:38:38 +01006544 iwl3945_set_rxon_channel(priv, conf->channel->band, conf->channel->hw_value);
Zhu Yib481de92007-09-25 17:54:57 -07006545
Johannes Berg8318d782008-01-24 19:38:38 +01006546 iwl3945_set_flags_for_phymode(priv, conf->channel->band);
Zhu Yib481de92007-09-25 17:54:57 -07006547
6548 /* The list of supported rates and rate mask can be different
6549 * for each phymode; since the phymode may have changed, reset
6550 * the rate mask to what mac80211 lists */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006551 iwl3945_set_rate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006552
6553 spin_unlock_irqrestore(&priv->lock, flags);
6554
6555#ifdef IEEE80211_CONF_CHANNEL_SWITCH
6556 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006557 iwl3945_hw_channel_switch(priv, conf->channel);
Zhu Yi76bb77e2007-11-22 10:53:22 +08006558 goto out;
Zhu Yib481de92007-09-25 17:54:57 -07006559 }
6560#endif
6561
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006562 iwl3945_radio_kill_sw(priv, !conf->radio_enabled);
Zhu Yib481de92007-09-25 17:54:57 -07006563
6564 if (!conf->radio_enabled) {
6565 IWL_DEBUG_MAC80211("leave - radio disabled\n");
Zhu Yi76bb77e2007-11-22 10:53:22 +08006566 goto out;
Zhu Yib481de92007-09-25 17:54:57 -07006567 }
6568
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006569 if (iwl3945_is_rfkill(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006570 IWL_DEBUG_MAC80211("leave - RF kill\n");
Zhu Yi76bb77e2007-11-22 10:53:22 +08006571 ret = -EIO;
6572 goto out;
Zhu Yib481de92007-09-25 17:54:57 -07006573 }
6574
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006575 iwl3945_set_rate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006576
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006577 if (memcmp(&priv->active39_rxon,
6578 &priv->staging39_rxon, sizeof(priv->staging39_rxon)))
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006579 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006580 else
6581 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
6582
6583 IWL_DEBUG_MAC80211("leave\n");
6584
Zhu Yi76bb77e2007-11-22 10:53:22 +08006585out:
Zhu Yia0646472007-12-20 14:10:01 +08006586 clear_bit(STATUS_CONF_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07006587 mutex_unlock(&priv->mutex);
Zhu Yi76bb77e2007-11-22 10:53:22 +08006588 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07006589}
6590
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006591static void iwl3945_config_ap(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07006592{
6593 int rc = 0;
6594
Maarten Lankhorstd986bcd2008-01-23 10:15:16 -08006595 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Zhu Yib481de92007-09-25 17:54:57 -07006596 return;
6597
6598 /* The following should be done only at AP bring up */
Ron Rindjunsky5d1e2322008-06-30 17:23:04 +08006599 if (!(iwl3945_is_associated(priv))) {
Zhu Yib481de92007-09-25 17:54:57 -07006600
6601 /* RXON - unassoc (to set timing command) */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006602 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006603 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006604
6605 /* RXON Timing */
Tomas Winkler28afaf92008-12-19 10:37:06 +08006606 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006607 iwl3945_setup_rxon_timing(priv);
6608 rc = iwl3945_send_cmd_pdu(priv, REPLY_RXON_TIMING,
Zhu Yib481de92007-09-25 17:54:57 -07006609 sizeof(priv->rxon_timing), &priv->rxon_timing);
6610 if (rc)
6611 IWL_WARNING("REPLY_RXON_TIMING failed - "
6612 "Attempting to continue.\n");
6613
6614 /* FIXME: what should be the assoc_id for AP? */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006615 priv->staging39_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
Zhu Yib481de92007-09-25 17:54:57 -07006616 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006617 priv->staging39_rxon.flags |=
Zhu Yib481de92007-09-25 17:54:57 -07006618 RXON_FLG_SHORT_PREAMBLE_MSK;
6619 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006620 priv->staging39_rxon.flags &=
Zhu Yib481de92007-09-25 17:54:57 -07006621 ~RXON_FLG_SHORT_PREAMBLE_MSK;
6622
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006623 if (priv->staging39_rxon.flags & RXON_FLG_BAND_24G_MSK) {
Zhu Yib481de92007-09-25 17:54:57 -07006624 if (priv->assoc_capability &
6625 WLAN_CAPABILITY_SHORT_SLOT_TIME)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006626 priv->staging39_rxon.flags |=
Zhu Yib481de92007-09-25 17:54:57 -07006627 RXON_FLG_SHORT_SLOT_MSK;
6628 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006629 priv->staging39_rxon.flags &=
Zhu Yib481de92007-09-25 17:54:57 -07006630 ~RXON_FLG_SHORT_SLOT_MSK;
6631
Johannes Berg05c914f2008-09-11 00:01:58 +02006632 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006633 priv->staging39_rxon.flags &=
Zhu Yib481de92007-09-25 17:54:57 -07006634 ~RXON_FLG_SHORT_SLOT_MSK;
6635 }
6636 /* restore RXON assoc */
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006637 priv->staging39_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006638 iwl3945_commit_rxon(priv);
Kolekar, Abhijeetb5323d32008-12-19 10:37:22 +08006639 iwl3945_add_station(priv, iwl_bcast_addr, 0, 0);
Zhu Yi556f8db2007-09-27 11:27:33 +08006640 }
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006641 iwl3945_send_beacon_cmd(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006642
6643 /* FIXME - we need to add code here to detect a totally new
6644 * configuration, reset the AP, unassoc, rxon timing, assoc,
6645 * clear sta table, add BCAST sta... */
6646}
6647
Johannes Berg32bfd352007-12-19 01:31:26 +01006648static int iwl3945_mac_config_interface(struct ieee80211_hw *hw,
6649 struct ieee80211_vif *vif,
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006650 struct ieee80211_if_conf *conf)
Zhu Yib481de92007-09-25 17:54:57 -07006651{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006652 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006653 int rc;
6654
6655 if (conf == NULL)
6656 return -EIO;
6657
Emmanuel Grumbachb716bb92008-03-04 18:09:32 -08006658 if (priv->vif != vif) {
6659 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
Emmanuel Grumbachb716bb92008-03-04 18:09:32 -08006660 return 0;
6661 }
6662
Johannes Berg9d139c82008-07-09 14:40:37 +02006663 /* handle this temporarily here */
Johannes Berg05c914f2008-09-11 00:01:58 +02006664 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
Johannes Berg9d139c82008-07-09 14:40:37 +02006665 conf->changed & IEEE80211_IFCC_BEACON) {
6666 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
6667 if (!beacon)
6668 return -ENOMEM;
Mohamed Abbas9bdf5ec2008-11-07 09:58:35 -08006669 mutex_lock(&priv->mutex);
Johannes Berg9d139c82008-07-09 14:40:37 +02006670 rc = iwl3945_mac_beacon_update(hw, beacon);
Mohamed Abbas9bdf5ec2008-11-07 09:58:35 -08006671 mutex_unlock(&priv->mutex);
Johannes Berg9d139c82008-07-09 14:40:37 +02006672 if (rc)
6673 return rc;
6674 }
6675
Zhu Yi5a669262008-01-14 17:46:18 -08006676 if (!iwl3945_is_alive(priv))
6677 return -EAGAIN;
6678
Zhu Yib481de92007-09-25 17:54:57 -07006679 mutex_lock(&priv->mutex);
6680
Zhu Yib481de92007-09-25 17:54:57 -07006681 if (conf->bssid)
Johannes Berge1749612008-10-27 15:59:26 -07006682 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
Zhu Yib481de92007-09-25 17:54:57 -07006683
Johannes Berg4150c572007-09-17 01:29:23 -04006684/*
6685 * very dubious code was here; the probe filtering flag is never set:
6686 *
Zhu Yib481de92007-09-25 17:54:57 -07006687 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
6688 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
Johannes Berg4150c572007-09-17 01:29:23 -04006689 */
Zhu Yib481de92007-09-25 17:54:57 -07006690
Johannes Berg05c914f2008-09-11 00:01:58 +02006691 if (priv->iw_mode == NL80211_IFTYPE_AP) {
Zhu Yib481de92007-09-25 17:54:57 -07006692 if (!conf->bssid) {
6693 conf->bssid = priv->mac_addr;
6694 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
Johannes Berge1749612008-10-27 15:59:26 -07006695 IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
6696 conf->bssid);
Zhu Yib481de92007-09-25 17:54:57 -07006697 }
6698 if (priv->ibss_beacon)
6699 dev_kfree_skb(priv->ibss_beacon);
6700
Johannes Berg9d139c82008-07-09 14:40:37 +02006701 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
Zhu Yib481de92007-09-25 17:54:57 -07006702 }
6703
Mohamed Abbasfde35712007-11-29 11:10:15 +08006704 if (iwl3945_is_rfkill(priv))
6705 goto done;
6706
Zhu Yib481de92007-09-25 17:54:57 -07006707 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
6708 !is_multicast_ether_addr(conf->bssid)) {
6709 /* If there is currently a HW scan going on in the background
6710 * then we need to cancel it else the RXON below will fail. */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006711 if (iwl3945_scan_cancel_timeout(priv, 100)) {
Zhu Yib481de92007-09-25 17:54:57 -07006712 IWL_WARNING("Aborted scan still in progress "
6713 "after 100ms\n");
6714 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
6715 mutex_unlock(&priv->mutex);
6716 return -EAGAIN;
6717 }
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006718 memcpy(priv->staging39_rxon.bssid_addr, conf->bssid, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07006719
6720 /* TODO: Audit driver for usage of these members and see
6721 * if mac80211 deprecates them (priv->bssid looks like it
6722 * shouldn't be there, but I haven't scanned the IBSS code
6723 * to verify) - jpk */
6724 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
6725
Johannes Berg05c914f2008-09-11 00:01:58 +02006726 if (priv->iw_mode == NL80211_IFTYPE_AP)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006727 iwl3945_config_ap(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006728 else {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006729 rc = iwl3945_commit_rxon(priv);
Johannes Berg05c914f2008-09-11 00:01:58 +02006730 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006731 iwl3945_add_station(priv,
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006732 priv->active39_rxon.bssid_addr, 1, 0);
Zhu Yib481de92007-09-25 17:54:57 -07006733 }
6734
6735 } else {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006736 iwl3945_scan_cancel_timeout(priv, 100);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006737 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006738 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006739 }
6740
Mohamed Abbasfde35712007-11-29 11:10:15 +08006741 done:
Zhu Yib481de92007-09-25 17:54:57 -07006742 IWL_DEBUG_MAC80211("leave\n");
6743 mutex_unlock(&priv->mutex);
6744
6745 return 0;
6746}
6747
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006748static void iwl3945_configure_filter(struct ieee80211_hw *hw,
Johannes Berg4150c572007-09-17 01:29:23 -04006749 unsigned int changed_flags,
6750 unsigned int *total_flags,
6751 int mc_count, struct dev_addr_list *mc_list)
6752{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006753 struct iwl_priv *priv = hw->priv;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006754 __le32 *filter_flags = &priv->staging39_rxon.filter_flags;
Rick Farrington25b3f572008-06-30 17:23:28 +08006755
Zhu, Yi352bc8d2008-11-12 13:14:09 -08006756 IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
6757 changed_flags, *total_flags);
6758
6759 if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
6760 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
6761 *filter_flags |= RXON_FILTER_PROMISC_MSK;
6762 else
6763 *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
Abhijeet Kolekar5ec03972008-05-05 10:22:48 +08006764 }
Zhu, Yi352bc8d2008-11-12 13:14:09 -08006765 if (changed_flags & FIF_ALLMULTI) {
6766 if (*total_flags & FIF_ALLMULTI)
6767 *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
6768 else
6769 *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
6770 }
6771 if (changed_flags & FIF_CONTROL) {
6772 if (*total_flags & FIF_CONTROL)
6773 *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
6774 else
6775 *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
6776 }
6777 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
6778 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
6779 *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
6780 else
6781 *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
6782 }
6783
6784 /* We avoid iwl_commit_rxon here to commit the new filter flags
6785 * since mac80211 will call ieee80211_hw_config immediately.
6786 * (mc_list is not supported at this time). Otherwise, we need to
6787 * queue a background iwl_commit_rxon work.
6788 */
6789
6790 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
Rick Farrington25b3f572008-06-30 17:23:28 +08006791 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
Johannes Berg4150c572007-09-17 01:29:23 -04006792}
6793
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006794static void iwl3945_mac_remove_interface(struct ieee80211_hw *hw,
Zhu Yib481de92007-09-25 17:54:57 -07006795 struct ieee80211_if_init_conf *conf)
6796{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006797 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006798
6799 IWL_DEBUG_MAC80211("enter\n");
6800
6801 mutex_lock(&priv->mutex);
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08006802
Mohamed Abbasfde35712007-11-29 11:10:15 +08006803 if (iwl3945_is_ready_rf(priv)) {
6804 iwl3945_scan_cancel_timeout(priv, 100);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006805 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Mohamed Abbasfde35712007-11-29 11:10:15 +08006806 iwl3945_commit_rxon(priv);
6807 }
Johannes Berg32bfd352007-12-19 01:31:26 +01006808 if (priv->vif == conf->vif) {
6809 priv->vif = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07006810 memset(priv->bssid, 0, ETH_ALEN);
Zhu Yib481de92007-09-25 17:54:57 -07006811 }
6812 mutex_unlock(&priv->mutex);
6813
6814 IWL_DEBUG_MAC80211("leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07006815}
6816
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006817#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
6818
6819static void iwl3945_bss_info_changed(struct ieee80211_hw *hw,
6820 struct ieee80211_vif *vif,
6821 struct ieee80211_bss_conf *bss_conf,
6822 u32 changes)
6823{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006824 struct iwl_priv *priv = hw->priv;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006825
6826 IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
6827
6828 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
6829 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
6830 bss_conf->use_short_preamble);
6831 if (bss_conf->use_short_preamble)
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006832 priv->staging39_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006833 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006834 priv->staging39_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006835 }
6836
6837 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
6838 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
6839 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006840 priv->staging39_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006841 else
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08006842 priv->staging39_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006843 }
6844
6845 if (changes & BSS_CHANGED_ASSOC) {
6846 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
6847 /* This should never happen as this function should
6848 * never be called from interrupt context. */
6849 if (WARN_ON_ONCE(in_interrupt()))
6850 return;
6851 if (bss_conf->assoc) {
6852 priv->assoc_id = bss_conf->aid;
6853 priv->beacon_int = bss_conf->beacon_int;
Tomas Winkler28afaf92008-12-19 10:37:06 +08006854 priv->timestamp = bss_conf->timestamp;
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08006855 priv->assoc_capability = bss_conf->assoc_capability;
6856 priv->next_scan_jiffies = jiffies +
6857 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
6858 mutex_lock(&priv->mutex);
6859 iwl3945_post_associate(priv);
6860 mutex_unlock(&priv->mutex);
6861 } else {
6862 priv->assoc_id = 0;
6863 IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
6864 }
6865 } else if (changes && iwl3945_is_associated(priv) && priv->assoc_id) {
6866 IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
6867 iwl3945_send_rxon_assoc(priv);
6868 }
6869
6870}
6871
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006872static int iwl3945_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
Zhu Yib481de92007-09-25 17:54:57 -07006873{
6874 int rc = 0;
6875 unsigned long flags;
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006876 struct iwl_priv *priv = hw->priv;
John W. Linville9387b7c2008-09-30 20:59:05 -04006877 DECLARE_SSID_BUF(ssid_buf);
Zhu Yib481de92007-09-25 17:54:57 -07006878
6879 IWL_DEBUG_MAC80211("enter\n");
6880
Mohamed Abbas15e869d2007-10-25 17:15:46 +08006881 mutex_lock(&priv->mutex);
Zhu Yib481de92007-09-25 17:54:57 -07006882 spin_lock_irqsave(&priv->lock, flags);
6883
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006884 if (!iwl3945_is_ready_rf(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006885 rc = -EIO;
6886 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
6887 goto out_unlock;
6888 }
6889
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08006890 /* we don't schedule scan within next_scan_jiffies period */
6891 if (priv->next_scan_jiffies &&
6892 time_after(priv->next_scan_jiffies, jiffies)) {
6893 rc = -EAGAIN;
6894 goto out_unlock;
6895 }
Bill Moss15dbf1b2008-05-06 11:05:15 +08006896 /* if we just finished scan ask for delay for a broadcast scan */
6897 if ((len == 0) && priv->last_scan_jiffies &&
6898 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN,
6899 jiffies)) {
Zhu Yib481de92007-09-25 17:54:57 -07006900 rc = -EAGAIN;
6901 goto out_unlock;
6902 }
6903 if (len) {
Mohamed Abbas7878a5a2007-11-29 11:10:13 +08006904 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
John W. Linville9387b7c2008-09-30 20:59:05 -04006905 print_ssid(ssid_buf, ssid, len), (int)len);
Zhu Yib481de92007-09-25 17:54:57 -07006906
6907 priv->one_direct_scan = 1;
6908 priv->direct_ssid_len = (u8)
6909 min((u8) len, (u8) IW_ESSID_MAX_SIZE);
6910 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08006911 } else
6912 priv->one_direct_scan = 0;
Zhu Yib481de92007-09-25 17:54:57 -07006913
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006914 rc = iwl3945_scan_initiate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006915
6916 IWL_DEBUG_MAC80211("leave\n");
6917
6918out_unlock:
6919 spin_unlock_irqrestore(&priv->lock, flags);
Mohamed Abbas15e869d2007-10-25 17:15:46 +08006920 mutex_unlock(&priv->mutex);
Zhu Yib481de92007-09-25 17:54:57 -07006921
6922 return rc;
6923}
6924
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006925static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Zhu Yib481de92007-09-25 17:54:57 -07006926 const u8 *local_addr, const u8 *addr,
6927 struct ieee80211_key_conf *key)
6928{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006929 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006930 int rc = 0;
6931 u8 sta_id;
6932
6933 IWL_DEBUG_MAC80211("enter\n");
6934
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006935 if (!iwl3945_param_hwcrypto) {
Zhu Yib481de92007-09-25 17:54:57 -07006936 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
6937 return -EOPNOTSUPP;
6938 }
6939
6940 if (is_zero_ether_addr(addr))
6941 /* only support pairwise keys */
6942 return -EOPNOTSUPP;
6943
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006944 sta_id = iwl3945_hw_find_station(priv, addr);
Zhu Yib481de92007-09-25 17:54:57 -07006945 if (sta_id == IWL_INVALID_STATION) {
Johannes Berge1749612008-10-27 15:59:26 -07006946 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
6947 addr);
Zhu Yib481de92007-09-25 17:54:57 -07006948 return -EINVAL;
6949 }
6950
6951 mutex_lock(&priv->mutex);
6952
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006953 iwl3945_scan_cancel_timeout(priv, 100);
Mohamed Abbas15e869d2007-10-25 17:15:46 +08006954
Zhu Yib481de92007-09-25 17:54:57 -07006955 switch (cmd) {
6956 case SET_KEY:
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006957 rc = iwl3945_update_sta_key_info(priv, key, sta_id);
Zhu Yib481de92007-09-25 17:54:57 -07006958 if (!rc) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006959 iwl3945_set_rxon_hwcrypto(priv, 1);
6960 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006961 key->hw_key_idx = sta_id;
6962 IWL_DEBUG_MAC80211("set_key success, using hwcrypto\n");
6963 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
6964 }
6965 break;
6966 case DISABLE_KEY:
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006967 rc = iwl3945_clear_sta_key_info(priv, sta_id);
Zhu Yib481de92007-09-25 17:54:57 -07006968 if (!rc) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006969 iwl3945_set_rxon_hwcrypto(priv, 0);
6970 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07006971 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
6972 }
6973 break;
6974 default:
6975 rc = -EINVAL;
6976 }
6977
6978 IWL_DEBUG_MAC80211("leave\n");
6979 mutex_unlock(&priv->mutex);
6980
6981 return rc;
6982}
6983
Johannes Berge100bb62008-04-30 18:51:21 +02006984static int iwl3945_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
Zhu Yib481de92007-09-25 17:54:57 -07006985 const struct ieee80211_tx_queue_params *params)
6986{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08006987 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07006988 unsigned long flags;
6989 int q;
Zhu Yib481de92007-09-25 17:54:57 -07006990
6991 IWL_DEBUG_MAC80211("enter\n");
6992
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08006993 if (!iwl3945_is_ready_rf(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07006994 IWL_DEBUG_MAC80211("leave - RF not ready\n");
6995 return -EIO;
6996 }
6997
6998 if (queue >= AC_NUM) {
6999 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
7000 return 0;
7001 }
7002
Zhu Yib481de92007-09-25 17:54:57 -07007003 q = AC_NUM - 1 - queue;
7004
7005 spin_lock_irqsave(&priv->lock, flags);
7006
7007 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
7008 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
7009 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
7010 priv->qos_data.def_qos_parm.ac[q].edca_txop =
Johannes Berg3330d7be2008-02-10 16:49:38 +01007011 cpu_to_le16((params->txop * 32));
Zhu Yib481de92007-09-25 17:54:57 -07007012
7013 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
7014 priv->qos_data.qos_active = 1;
7015
7016 spin_unlock_irqrestore(&priv->lock, flags);
7017
7018 mutex_lock(&priv->mutex);
Johannes Berg05c914f2008-09-11 00:01:58 +02007019 if (priv->iw_mode == NL80211_IFTYPE_AP)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007020 iwl3945_activate_qos(priv, 1);
7021 else if (priv->assoc_id && iwl3945_is_associated(priv))
7022 iwl3945_activate_qos(priv, 0);
Zhu Yib481de92007-09-25 17:54:57 -07007023
7024 mutex_unlock(&priv->mutex);
7025
Zhu Yib481de92007-09-25 17:54:57 -07007026 IWL_DEBUG_MAC80211("leave\n");
7027 return 0;
7028}
7029
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007030static int iwl3945_mac_get_tx_stats(struct ieee80211_hw *hw,
Zhu Yib481de92007-09-25 17:54:57 -07007031 struct ieee80211_tx_queue_stats *stats)
7032{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007033 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07007034 int i, avail;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007035 struct iwl3945_tx_queue *txq;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08007036 struct iwl_queue *q;
Zhu Yib481de92007-09-25 17:54:57 -07007037 unsigned long flags;
7038
7039 IWL_DEBUG_MAC80211("enter\n");
7040
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007041 if (!iwl3945_is_ready_rf(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07007042 IWL_DEBUG_MAC80211("leave - RF not ready\n");
7043 return -EIO;
7044 }
7045
7046 spin_lock_irqsave(&priv->lock, flags);
7047
7048 for (i = 0; i < AC_NUM; i++) {
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007049 txq = &priv->txq39[i];
Zhu Yib481de92007-09-25 17:54:57 -07007050 q = &txq->q;
Samuel Ortizd20b3c62008-12-19 10:37:15 +08007051 avail = iwl_queue_space(q);
Zhu Yib481de92007-09-25 17:54:57 -07007052
Johannes Berg57ffc582008-04-29 17:18:59 +02007053 stats[i].len = q->n_window - avail;
7054 stats[i].limit = q->n_window - q->high_mark;
7055 stats[i].count = q->n_window;
Zhu Yib481de92007-09-25 17:54:57 -07007056
7057 }
7058 spin_unlock_irqrestore(&priv->lock, flags);
7059
7060 IWL_DEBUG_MAC80211("leave\n");
7061
7062 return 0;
7063}
7064
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007065static void iwl3945_mac_reset_tsf(struct ieee80211_hw *hw)
Zhu Yib481de92007-09-25 17:54:57 -07007066{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007067 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07007068 unsigned long flags;
7069
7070 mutex_lock(&priv->mutex);
7071 IWL_DEBUG_MAC80211("enter\n");
7072
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007073 iwl3945_reset_qos(priv);
Ron Rindjunsky292ae172008-02-06 11:20:39 -08007074
Zhu Yib481de92007-09-25 17:54:57 -07007075 spin_lock_irqsave(&priv->lock, flags);
7076 priv->assoc_id = 0;
7077 priv->assoc_capability = 0;
7078 priv->call_post_assoc_from_beacon = 0;
7079
7080 /* new association get rid of ibss beacon skb */
7081 if (priv->ibss_beacon)
7082 dev_kfree_skb(priv->ibss_beacon);
7083
7084 priv->ibss_beacon = NULL;
7085
7086 priv->beacon_int = priv->hw->conf.beacon_int;
Tomas Winkler28afaf92008-12-19 10:37:06 +08007087 priv->timestamp = 0;
Johannes Berg05c914f2008-09-11 00:01:58 +02007088 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
Zhu Yib481de92007-09-25 17:54:57 -07007089 priv->beacon_int = 0;
7090
7091 spin_unlock_irqrestore(&priv->lock, flags);
7092
Mohamed Abbasfde35712007-11-29 11:10:15 +08007093 if (!iwl3945_is_ready_rf(priv)) {
7094 IWL_DEBUG_MAC80211("leave - not ready\n");
7095 mutex_unlock(&priv->mutex);
7096 return;
7097 }
7098
Mohamed Abbas15e869d2007-10-25 17:15:46 +08007099 /* we are restarting association process
7100 * clear RXON_FILTER_ASSOC_MSK bit
7101 */
Johannes Berg05c914f2008-09-11 00:01:58 +02007102 if (priv->iw_mode != NL80211_IFTYPE_AP) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007103 iwl3945_scan_cancel_timeout(priv, 100);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007104 priv->staging39_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007105 iwl3945_commit_rxon(priv);
Mohamed Abbas15e869d2007-10-25 17:15:46 +08007106 }
7107
Zhu Yib481de92007-09-25 17:54:57 -07007108 /* Per mac80211.h: This is only used in IBSS mode... */
Johannes Berg05c914f2008-09-11 00:01:58 +02007109 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
Mohamed Abbas15e869d2007-10-25 17:15:46 +08007110
Zhu Yib481de92007-09-25 17:54:57 -07007111 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
7112 mutex_unlock(&priv->mutex);
7113 return;
7114 }
7115
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007116 iwl3945_set_rate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007117
7118 mutex_unlock(&priv->mutex);
7119
7120 IWL_DEBUG_MAC80211("leave\n");
7121
7122}
7123
Johannes Berge039fa42008-05-15 12:55:29 +02007124static int iwl3945_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
Zhu Yib481de92007-09-25 17:54:57 -07007125{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007126 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07007127 unsigned long flags;
7128
Zhu Yib481de92007-09-25 17:54:57 -07007129 IWL_DEBUG_MAC80211("enter\n");
7130
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007131 if (!iwl3945_is_ready_rf(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07007132 IWL_DEBUG_MAC80211("leave - RF not ready\n");
Zhu Yib481de92007-09-25 17:54:57 -07007133 return -EIO;
7134 }
7135
Johannes Berg05c914f2008-09-11 00:01:58 +02007136 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
Zhu Yib481de92007-09-25 17:54:57 -07007137 IWL_DEBUG_MAC80211("leave - not IBSS\n");
Zhu Yib481de92007-09-25 17:54:57 -07007138 return -EIO;
7139 }
7140
7141 spin_lock_irqsave(&priv->lock, flags);
7142
7143 if (priv->ibss_beacon)
7144 dev_kfree_skb(priv->ibss_beacon);
7145
7146 priv->ibss_beacon = skb;
7147
7148 priv->assoc_id = 0;
7149
7150 IWL_DEBUG_MAC80211("leave\n");
7151 spin_unlock_irqrestore(&priv->lock, flags);
7152
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007153 iwl3945_reset_qos(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007154
Abhijeet Kolekardc4b1e72008-09-03 11:26:30 +08007155 iwl3945_post_associate(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007156
Zhu Yib481de92007-09-25 17:54:57 -07007157
7158 return 0;
7159}
7160
7161/*****************************************************************************
7162 *
7163 * sysfs attributes
7164 *
7165 *****************************************************************************/
7166
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007167#ifdef CONFIG_IWL3945_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -07007168
7169/*
7170 * The following adds a new attribute to the sysfs representation
7171 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
7172 * used for controlling the debug level.
7173 *
7174 * See the level definitions in iwl for details.
7175 */
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007176static ssize_t show_debug_level(struct device *d,
7177 struct device_attribute *attr, char *buf)
Zhu Yib481de92007-09-25 17:54:57 -07007178{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007179 struct iwl_priv *priv = d->driver_data;
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007180
7181 return sprintf(buf, "0x%08X\n", priv->debug_level);
Zhu Yib481de92007-09-25 17:54:57 -07007182}
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007183static ssize_t store_debug_level(struct device *d,
7184 struct device_attribute *attr,
Zhu Yib481de92007-09-25 17:54:57 -07007185 const char *buf, size_t count)
7186{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007187 struct iwl_priv *priv = d->driver_data;
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007188 unsigned long val;
7189 int ret;
Zhu Yib481de92007-09-25 17:54:57 -07007190
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007191 ret = strict_strtoul(buf, 0, &val);
7192 if (ret)
Tomas Winkler978785a2008-12-19 10:37:31 +08007193 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
Zhu Yib481de92007-09-25 17:54:57 -07007194 else
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007195 priv->debug_level = val;
Zhu Yib481de92007-09-25 17:54:57 -07007196
7197 return strnlen(buf, count);
7198}
7199
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007200static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
7201 show_debug_level, store_debug_level);
Zhu Yib481de92007-09-25 17:54:57 -07007202
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007203#endif /* CONFIG_IWL3945_DEBUG */
Zhu Yib481de92007-09-25 17:54:57 -07007204
Zhu Yib481de92007-09-25 17:54:57 -07007205static ssize_t show_temperature(struct device *d,
7206 struct device_attribute *attr, char *buf)
7207{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007208 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007209
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007210 if (!iwl3945_is_alive(priv))
Zhu Yib481de92007-09-25 17:54:57 -07007211 return -EAGAIN;
7212
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007213 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
Zhu Yib481de92007-09-25 17:54:57 -07007214}
7215
7216static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
7217
Zhu Yib481de92007-09-25 17:54:57 -07007218static ssize_t show_tx_power(struct device *d,
7219 struct device_attribute *attr, char *buf)
7220{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007221 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007222 return sprintf(buf, "%d\n", priv->user_txpower_limit);
7223}
7224
7225static ssize_t store_tx_power(struct device *d,
7226 struct device_attribute *attr,
7227 const char *buf, size_t count)
7228{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007229 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007230 char *p = (char *)buf;
7231 u32 val;
7232
7233 val = simple_strtoul(p, &p, 10);
7234 if (p == buf)
Tomas Winkler978785a2008-12-19 10:37:31 +08007235 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
Zhu Yib481de92007-09-25 17:54:57 -07007236 else
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007237 iwl3945_hw_reg_set_txpower(priv, val);
Zhu Yib481de92007-09-25 17:54:57 -07007238
7239 return count;
7240}
7241
7242static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
7243
7244static ssize_t show_flags(struct device *d,
7245 struct device_attribute *attr, char *buf)
7246{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007247 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007248
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007249 return sprintf(buf, "0x%04X\n", priv->active39_rxon.flags);
Zhu Yib481de92007-09-25 17:54:57 -07007250}
7251
7252static ssize_t store_flags(struct device *d,
7253 struct device_attribute *attr,
7254 const char *buf, size_t count)
7255{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007256 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007257 u32 flags = simple_strtoul(buf, NULL, 0);
7258
7259 mutex_lock(&priv->mutex);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007260 if (le32_to_cpu(priv->staging39_rxon.flags) != flags) {
Zhu Yib481de92007-09-25 17:54:57 -07007261 /* Cancel any currently running scans... */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007262 if (iwl3945_scan_cancel_timeout(priv, 100))
Zhu Yib481de92007-09-25 17:54:57 -07007263 IWL_WARNING("Could not cancel scan.\n");
7264 else {
7265 IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
7266 flags);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007267 priv->staging39_rxon.flags = cpu_to_le32(flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007268 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007269 }
7270 }
7271 mutex_unlock(&priv->mutex);
7272
7273 return count;
7274}
7275
7276static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
7277
7278static ssize_t show_filter_flags(struct device *d,
7279 struct device_attribute *attr, char *buf)
7280{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007281 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007282
7283 return sprintf(buf, "0x%04X\n",
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007284 le32_to_cpu(priv->active39_rxon.filter_flags));
Zhu Yib481de92007-09-25 17:54:57 -07007285}
7286
7287static ssize_t store_filter_flags(struct device *d,
7288 struct device_attribute *attr,
7289 const char *buf, size_t count)
7290{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007291 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Zhu Yib481de92007-09-25 17:54:57 -07007292 u32 filter_flags = simple_strtoul(buf, NULL, 0);
7293
7294 mutex_lock(&priv->mutex);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007295 if (le32_to_cpu(priv->staging39_rxon.filter_flags) != filter_flags) {
Zhu Yib481de92007-09-25 17:54:57 -07007296 /* Cancel any currently running scans... */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007297 if (iwl3945_scan_cancel_timeout(priv, 100))
Zhu Yib481de92007-09-25 17:54:57 -07007298 IWL_WARNING("Could not cancel scan.\n");
7299 else {
7300 IWL_DEBUG_INFO("Committing rxon.filter_flags = "
7301 "0x%04X\n", filter_flags);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007302 priv->staging39_rxon.filter_flags =
Zhu Yib481de92007-09-25 17:54:57 -07007303 cpu_to_le32(filter_flags);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007304 iwl3945_commit_rxon(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007305 }
7306 }
7307 mutex_unlock(&priv->mutex);
7308
7309 return count;
7310}
7311
7312static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
7313 store_filter_flags);
7314
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007315#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Zhu Yib481de92007-09-25 17:54:57 -07007316
7317static ssize_t show_measurement(struct device *d,
7318 struct device_attribute *attr, char *buf)
7319{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007320 struct iwl_priv *priv = dev_get_drvdata(d);
Tomas Winkler600c0e12008-12-19 10:37:04 +08007321 struct iwl_spectrum_notification measure_report;
Zhu Yib481de92007-09-25 17:54:57 -07007322 u32 size = sizeof(measure_report), len = 0, ofs = 0;
Tomas Winkler3ac7f142008-07-21 02:40:14 +03007323 u8 *data = (u8 *)&measure_report;
Zhu Yib481de92007-09-25 17:54:57 -07007324 unsigned long flags;
7325
7326 spin_lock_irqsave(&priv->lock, flags);
7327 if (!(priv->measurement_status & MEASUREMENT_READY)) {
7328 spin_unlock_irqrestore(&priv->lock, flags);
7329 return 0;
7330 }
7331 memcpy(&measure_report, &priv->measure_report, size);
7332 priv->measurement_status = 0;
7333 spin_unlock_irqrestore(&priv->lock, flags);
7334
7335 while (size && (PAGE_SIZE - len)) {
7336 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7337 PAGE_SIZE - len, 1);
7338 len = strlen(buf);
7339 if (PAGE_SIZE - len)
7340 buf[len++] = '\n';
7341
7342 ofs += 16;
7343 size -= min(size, 16U);
7344 }
7345
7346 return len;
7347}
7348
7349static ssize_t store_measurement(struct device *d,
7350 struct device_attribute *attr,
7351 const char *buf, size_t count)
7352{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007353 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007354 struct ieee80211_measurement_params params = {
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007355 .channel = le16_to_cpu(priv->active39_rxon.channel),
Zhu Yib481de92007-09-25 17:54:57 -07007356 .start_time = cpu_to_le64(priv->last_tsf),
7357 .duration = cpu_to_le16(1),
7358 };
7359 u8 type = IWL_MEASURE_BASIC;
7360 u8 buffer[32];
7361 u8 channel;
7362
7363 if (count) {
7364 char *p = buffer;
7365 strncpy(buffer, buf, min(sizeof(buffer), count));
7366 channel = simple_strtoul(p, NULL, 0);
7367 if (channel)
7368 params.channel = channel;
7369
7370 p = buffer;
7371 while (*p && *p != ' ')
7372 p++;
7373 if (*p)
7374 type = simple_strtoul(p + 1, NULL, 0);
7375 }
7376
7377 IWL_DEBUG_INFO("Invoking measurement of type %d on "
7378 "channel %d (for '%s')\n", type, params.channel, buf);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007379 iwl3945_get_measurement(priv, &params, type);
Zhu Yib481de92007-09-25 17:54:57 -07007380
7381 return count;
7382}
7383
7384static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
7385 show_measurement, store_measurement);
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007386#endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
Zhu Yib481de92007-09-25 17:54:57 -07007387
Zhu Yib481de92007-09-25 17:54:57 -07007388static ssize_t store_retry_rate(struct device *d,
7389 struct device_attribute *attr,
7390 const char *buf, size_t count)
7391{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007392 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007393
7394 priv->retry_rate = simple_strtoul(buf, NULL, 0);
7395 if (priv->retry_rate <= 0)
7396 priv->retry_rate = 1;
7397
7398 return count;
7399}
7400
7401static ssize_t show_retry_rate(struct device *d,
7402 struct device_attribute *attr, char *buf)
7403{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007404 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007405 return sprintf(buf, "%d", priv->retry_rate);
7406}
7407
7408static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
7409 store_retry_rate);
7410
7411static ssize_t store_power_level(struct device *d,
7412 struct device_attribute *attr,
7413 const char *buf, size_t count)
7414{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007415 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007416 int rc;
7417 int mode;
7418
7419 mode = simple_strtoul(buf, NULL, 0);
7420 mutex_lock(&priv->mutex);
7421
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007422 if (!iwl3945_is_ready(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07007423 rc = -EAGAIN;
7424 goto out;
7425 }
7426
Samuel Ortiz1125eff2008-12-19 10:37:14 +08007427 if ((mode < 1) || (mode > IWL39_POWER_LIMIT) ||
7428 (mode == IWL39_POWER_AC))
7429 mode = IWL39_POWER_AC;
Zhu Yib481de92007-09-25 17:54:57 -07007430 else
7431 mode |= IWL_POWER_ENABLED;
7432
7433 if (mode != priv->power_mode) {
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007434 rc = iwl3945_send_power_mode(priv, IWL_POWER_LEVEL(mode));
Zhu Yib481de92007-09-25 17:54:57 -07007435 if (rc) {
7436 IWL_DEBUG_MAC80211("failed setting power mode.\n");
7437 goto out;
7438 }
7439 priv->power_mode = mode;
7440 }
7441
7442 rc = count;
7443
7444 out:
7445 mutex_unlock(&priv->mutex);
7446 return rc;
7447}
7448
7449#define MAX_WX_STRING 80
7450
7451/* Values are in microsecond */
7452static const s32 timeout_duration[] = {
7453 350000,
7454 250000,
7455 75000,
7456 37000,
7457 25000,
7458};
7459static const s32 period_duration[] = {
7460 400000,
7461 700000,
7462 1000000,
7463 1000000,
7464 1000000
7465};
7466
7467static ssize_t show_power_level(struct device *d,
7468 struct device_attribute *attr, char *buf)
7469{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007470 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007471 int level = IWL_POWER_LEVEL(priv->power_mode);
7472 char *p = buf;
7473
7474 p += sprintf(p, "%d ", level);
7475 switch (level) {
7476 case IWL_POWER_MODE_CAM:
Samuel Ortiz1125eff2008-12-19 10:37:14 +08007477 case IWL39_POWER_AC:
Zhu Yib481de92007-09-25 17:54:57 -07007478 p += sprintf(p, "(AC)");
7479 break;
Samuel Ortiz1125eff2008-12-19 10:37:14 +08007480 case IWL39_POWER_BATTERY:
Zhu Yib481de92007-09-25 17:54:57 -07007481 p += sprintf(p, "(BATTERY)");
7482 break;
7483 default:
7484 p += sprintf(p,
7485 "(Timeout %dms, Period %dms)",
7486 timeout_duration[level - 1] / 1000,
7487 period_duration[level - 1] / 1000);
7488 }
7489
7490 if (!(priv->power_mode & IWL_POWER_ENABLED))
7491 p += sprintf(p, " OFF\n");
7492 else
7493 p += sprintf(p, " \n");
7494
Tomas Winkler3ac7f142008-07-21 02:40:14 +03007495 return p - buf + 1;
Zhu Yib481de92007-09-25 17:54:57 -07007496
7497}
7498
7499static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
7500 store_power_level);
7501
7502static ssize_t show_channels(struct device *d,
7503 struct device_attribute *attr, char *buf)
7504{
Johannes Berg8318d782008-01-24 19:38:38 +01007505 /* all this shit doesn't belong into sysfs anyway */
7506 return 0;
Zhu Yib481de92007-09-25 17:54:57 -07007507}
7508
7509static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
7510
7511static ssize_t show_statistics(struct device *d,
7512 struct device_attribute *attr, char *buf)
7513{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007514 struct iwl_priv *priv = dev_get_drvdata(d);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007515 u32 size = sizeof(struct iwl3945_notif_statistics);
Zhu Yib481de92007-09-25 17:54:57 -07007516 u32 len = 0, ofs = 0;
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007517 u8 *data = (u8 *)&priv->statistics_39;
Zhu Yib481de92007-09-25 17:54:57 -07007518 int rc = 0;
7519
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007520 if (!iwl3945_is_alive(priv))
Zhu Yib481de92007-09-25 17:54:57 -07007521 return -EAGAIN;
7522
7523 mutex_lock(&priv->mutex);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007524 rc = iwl3945_send_statistics_request(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007525 mutex_unlock(&priv->mutex);
7526
7527 if (rc) {
7528 len = sprintf(buf,
7529 "Error sending statistics request: 0x%08X\n", rc);
7530 return len;
7531 }
7532
7533 while (size && (PAGE_SIZE - len)) {
7534 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
7535 PAGE_SIZE - len, 1);
7536 len = strlen(buf);
7537 if (PAGE_SIZE - len)
7538 buf[len++] = '\n';
7539
7540 ofs += 16;
7541 size -= min(size, 16U);
7542 }
7543
7544 return len;
7545}
7546
7547static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
7548
7549static ssize_t show_antenna(struct device *d,
7550 struct device_attribute *attr, char *buf)
7551{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007552 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007553
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007554 if (!iwl3945_is_alive(priv))
Zhu Yib481de92007-09-25 17:54:57 -07007555 return -EAGAIN;
7556
7557 return sprintf(buf, "%d\n", priv->antenna);
7558}
7559
7560static ssize_t store_antenna(struct device *d,
7561 struct device_attribute *attr,
7562 const char *buf, size_t count)
7563{
7564 int ant;
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007565 struct iwl_priv *priv = dev_get_drvdata(d);
Zhu Yib481de92007-09-25 17:54:57 -07007566
7567 if (count == 0)
7568 return 0;
7569
7570 if (sscanf(buf, "%1i", &ant) != 1) {
7571 IWL_DEBUG_INFO("not in hex or decimal form.\n");
7572 return count;
7573 }
7574
7575 if ((ant >= 0) && (ant <= 2)) {
7576 IWL_DEBUG_INFO("Setting antenna select to %d.\n", ant);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007577 priv->antenna = (enum iwl3945_antenna)ant;
Zhu Yib481de92007-09-25 17:54:57 -07007578 } else
7579 IWL_DEBUG_INFO("Bad antenna select value %d.\n", ant);
7580
7581
7582 return count;
7583}
7584
7585static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
7586
7587static ssize_t show_status(struct device *d,
7588 struct device_attribute *attr, char *buf)
7589{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007590 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007591 if (!iwl3945_is_alive(priv))
Zhu Yib481de92007-09-25 17:54:57 -07007592 return -EAGAIN;
7593 return sprintf(buf, "0x%08x\n", (int)priv->status);
7594}
7595
7596static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
7597
7598static ssize_t dump_error_log(struct device *d,
7599 struct device_attribute *attr,
7600 const char *buf, size_t count)
7601{
7602 char *p = (char *)buf;
7603
7604 if (p[0] == '1')
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007605 iwl3945_dump_nic_error_log((struct iwl_priv *)d->driver_data);
Zhu Yib481de92007-09-25 17:54:57 -07007606
7607 return strnlen(buf, count);
7608}
7609
7610static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
7611
7612static ssize_t dump_event_log(struct device *d,
7613 struct device_attribute *attr,
7614 const char *buf, size_t count)
7615{
7616 char *p = (char *)buf;
7617
7618 if (p[0] == '1')
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007619 iwl3945_dump_nic_event_log((struct iwl_priv *)d->driver_data);
Zhu Yib481de92007-09-25 17:54:57 -07007620
7621 return strnlen(buf, count);
7622}
7623
7624static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
7625
7626/*****************************************************************************
7627 *
Tomas Winklera96a27f2008-10-23 23:48:56 -07007628 * driver setup and tear down
Zhu Yib481de92007-09-25 17:54:57 -07007629 *
7630 *****************************************************************************/
7631
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007632static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07007633{
7634 priv->workqueue = create_workqueue(DRV_NAME);
7635
7636 init_waitqueue_head(&priv->wait_command_queue);
7637
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007638 INIT_WORK(&priv->up, iwl3945_bg_up);
7639 INIT_WORK(&priv->restart, iwl3945_bg_restart);
7640 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
7641 INIT_WORK(&priv->scan_completed, iwl3945_bg_scan_completed);
7642 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
7643 INIT_WORK(&priv->abort_scan, iwl3945_bg_abort_scan);
7644 INIT_WORK(&priv->rf_kill, iwl3945_bg_rf_kill);
7645 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007646 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
7647 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
7648 INIT_DELAYED_WORK(&priv->scan_check, iwl3945_bg_scan_check);
Zhu Yib481de92007-09-25 17:54:57 -07007649
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007650 iwl3945_hw_setup_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007651
7652 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007653 iwl3945_irq_tasklet, (unsigned long)priv);
Zhu Yib481de92007-09-25 17:54:57 -07007654}
7655
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007656static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07007657{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007658 iwl3945_hw_cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007659
Joonwoo Parke47eb6a2007-11-29 10:42:49 +09007660 cancel_delayed_work_sync(&priv->init_alive_start);
Zhu Yib481de92007-09-25 17:54:57 -07007661 cancel_delayed_work(&priv->scan_check);
7662 cancel_delayed_work(&priv->alive_start);
Zhu Yib481de92007-09-25 17:54:57 -07007663 cancel_work_sync(&priv->beacon_update);
7664}
7665
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007666static struct attribute *iwl3945_sysfs_entries[] = {
Zhu Yib481de92007-09-25 17:54:57 -07007667 &dev_attr_antenna.attr,
7668 &dev_attr_channels.attr,
7669 &dev_attr_dump_errors.attr,
7670 &dev_attr_dump_events.attr,
7671 &dev_attr_flags.attr,
7672 &dev_attr_filter_flags.attr,
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007673#ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
Zhu Yib481de92007-09-25 17:54:57 -07007674 &dev_attr_measurement.attr,
7675#endif
7676 &dev_attr_power_level.attr,
Zhu Yib481de92007-09-25 17:54:57 -07007677 &dev_attr_retry_rate.attr,
Zhu Yib481de92007-09-25 17:54:57 -07007678 &dev_attr_statistics.attr,
7679 &dev_attr_status.attr,
7680 &dev_attr_temperature.attr,
Zhu Yib481de92007-09-25 17:54:57 -07007681 &dev_attr_tx_power.attr,
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007682#ifdef CONFIG_IWL3945_DEBUG
7683 &dev_attr_debug_level.attr,
7684#endif
Zhu Yib481de92007-09-25 17:54:57 -07007685 NULL
7686};
7687
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007688static struct attribute_group iwl3945_attribute_group = {
Zhu Yib481de92007-09-25 17:54:57 -07007689 .name = NULL, /* put in device directory */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007690 .attrs = iwl3945_sysfs_entries,
Zhu Yib481de92007-09-25 17:54:57 -07007691};
7692
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007693static struct ieee80211_ops iwl3945_hw_ops = {
7694 .tx = iwl3945_mac_tx,
7695 .start = iwl3945_mac_start,
7696 .stop = iwl3945_mac_stop,
7697 .add_interface = iwl3945_mac_add_interface,
7698 .remove_interface = iwl3945_mac_remove_interface,
7699 .config = iwl3945_mac_config,
7700 .config_interface = iwl3945_mac_config_interface,
7701 .configure_filter = iwl3945_configure_filter,
7702 .set_key = iwl3945_mac_set_key,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007703 .get_tx_stats = iwl3945_mac_get_tx_stats,
7704 .conf_tx = iwl3945_mac_conf_tx,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007705 .reset_tsf = iwl3945_mac_reset_tsf,
Abhijeet Kolekarcd56d332008-09-03 11:26:21 +08007706 .bss_info_changed = iwl3945_bss_info_changed,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007707 .hw_scan = iwl3945_mac_hw_scan
Zhu Yib481de92007-09-25 17:54:57 -07007708};
7709
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007710static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Zhu Yib481de92007-09-25 17:54:57 -07007711{
7712 int err = 0;
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007713 struct iwl_priv *priv;
Zhu Yib481de92007-09-25 17:54:57 -07007714 struct ieee80211_hw *hw;
Kolekar, Abhijeetc0f20d92008-12-19 10:37:19 +08007715 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07007716 unsigned long flags;
Zhu Yib481de92007-09-25 17:54:57 -07007717
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007718 /***********************
7719 * 1. Allocating HW data
7720 * ********************/
7721
Zhu Yib481de92007-09-25 17:54:57 -07007722 /* mac80211 allocates memory for this device instance, including
7723 * space for this driver's private structure */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007724 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl3945_hw_ops);
Zhu Yib481de92007-09-25 17:54:57 -07007725 if (hw == NULL) {
Samuel Ortiza3139c52008-12-19 10:37:09 +08007726 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
Zhu Yib481de92007-09-25 17:54:57 -07007727 err = -ENOMEM;
7728 goto out;
7729 }
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007730
Zhu Yib481de92007-09-25 17:54:57 -07007731 SET_IEEE80211_DEV(hw, &pdev->dev);
7732
Zhu Yib481de92007-09-25 17:54:57 -07007733 priv = hw->priv;
7734 priv->hw = hw;
Zhu Yib481de92007-09-25 17:54:57 -07007735 priv->pci_dev = pdev;
Tomas Winkler82b9a122008-03-04 18:09:30 -08007736 priv->cfg = cfg;
Cahill, Ben M6440adb2007-11-29 11:09:55 +08007737
Samuel Ortiza3139c52008-12-19 10:37:09 +08007738 if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
7739 (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
7740 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
7741 IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
7742 err = -EINVAL;
7743 goto out;
7744 }
7745
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007746 /* Disabling hardware scan means that mac80211 will perform scans
7747 * "the hard way", rather than using device's scan. */
7748 if (iwl3945_param_disable_hw_scan) {
7749 IWL_DEBUG_INFO("Disabling hw_scan\n");
7750 iwl3945_hw_ops.hw_scan = NULL;
7751 }
7752
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007753 IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
7754 hw->rate_control_algorithm = "iwl-3945-rs";
7755 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
7756
Cahill, Ben M6440adb2007-11-29 11:09:55 +08007757 /* Select antenna (may be helpful if only one antenna is connected) */
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007758 priv->antenna = (enum iwl3945_antenna)iwl3945_param_antenna;
Christoph Hellwigc8b0e6e2007-10-25 17:15:51 +08007759#ifdef CONFIG_IWL3945_DEBUG
Samuel Ortiz40b8ec02008-12-19 10:37:08 +08007760 priv->debug_level = iwl3945_param_debug;
Zhu Yib481de92007-09-25 17:54:57 -07007761 atomic_set(&priv->restrict_refcnt, 0);
7762#endif
Zhu Yib481de92007-09-25 17:54:57 -07007763
Bruno Randolf566bfe52008-05-08 19:15:40 +02007764 /* Tell mac80211 our characteristics */
Johannes Berg605a0bd2008-07-15 10:10:01 +02007765 hw->flags = IEEE80211_HW_SIGNAL_DBM |
Bruno Randolf566bfe52008-05-08 19:15:40 +02007766 IEEE80211_HW_NOISE_DBM;
Zhu Yib481de92007-09-25 17:54:57 -07007767
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -07007768 hw->wiphy->interface_modes =
Luis R. Rodriguezf59ac042008-08-29 16:26:43 -07007769 BIT(NL80211_IFTYPE_STATION) |
7770 BIT(NL80211_IFTYPE_ADHOC);
7771
Luis R. Rodriguezea4a82dc2008-11-12 14:22:04 -08007772 hw->wiphy->fw_handles_regulatory = true;
7773
Cahill, Ben M6440adb2007-11-29 11:09:55 +08007774 /* 4 EDCA QOS priorities */
Zhu Yib481de92007-09-25 17:54:57 -07007775 hw->queues = 4;
7776
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007777 /***************************
7778 * 2. Initializing PCI bus
7779 * *************************/
Zhu Yib481de92007-09-25 17:54:57 -07007780 if (pci_enable_device(pdev)) {
7781 err = -ENODEV;
7782 goto out_ieee80211_free_hw;
7783 }
7784
7785 pci_set_master(pdev);
7786
Zhu Yib481de92007-09-25 17:54:57 -07007787 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7788 if (!err)
7789 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
7790 if (err) {
Tomas Winkler978785a2008-12-19 10:37:31 +08007791 IWL_WARN(priv, "No suitable DMA available.\n");
Zhu Yib481de92007-09-25 17:54:57 -07007792 goto out_pci_disable_device;
7793 }
7794
7795 pci_set_drvdata(pdev, priv);
7796 err = pci_request_regions(pdev, DRV_NAME);
7797 if (err)
7798 goto out_pci_disable_device;
Cahill, Ben M6440adb2007-11-29 11:09:55 +08007799
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007800 /***********************
7801 * 3. Read REV Register
7802 * ********************/
Zhu Yib481de92007-09-25 17:54:57 -07007803 priv->hw_base = pci_iomap(pdev, 0, 0);
7804 if (!priv->hw_base) {
7805 err = -ENODEV;
7806 goto out_pci_release_regions;
7807 }
7808
7809 IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
7810 (unsigned long long) pci_resource_len(pdev, 0));
7811 IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
7812
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007813 /* We disable the RETRY_TIMEOUT register (0x41) to keep
7814 * PCI Tx retries from interfering with C3 CPU state */
7815 pci_write_config_byte(pdev, 0x41, 0x00);
Zhu Yib481de92007-09-25 17:54:57 -07007816
Zhu Yi5a669262008-01-14 17:46:18 -08007817 /* nic init */
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08007818 iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
Tomas Winkler3ac7f142008-07-21 02:40:14 +03007819 CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
Zhu Yi5a669262008-01-14 17:46:18 -08007820
Abhijeet Kolekar5d49f492008-12-19 10:37:29 +08007821 iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
7822 err = iwl_poll_direct_bit(priv, CSR_GP_CNTRL,
Zhu, Yi73d7b5a2008-12-05 07:58:40 -08007823 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
Tomas Winkler3ac7f142008-07-21 02:40:14 +03007824 if (err < 0) {
7825 IWL_DEBUG_INFO("Failed to init the card\n");
Zhu Yi5a669262008-01-14 17:46:18 -08007826 goto out_remove_sysfs;
Tomas Winkler3ac7f142008-07-21 02:40:14 +03007827 }
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007828
7829 /***********************
7830 * 4. Read EEPROM
7831 * ********************/
Zhu Yi5a669262008-01-14 17:46:18 -08007832 /* Read the EEPROM */
7833 err = iwl3945_eeprom_init(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007834 if (err) {
Zhu Yi5a669262008-01-14 17:46:18 -08007835 IWL_ERROR("Unable to init EEPROM\n");
7836 goto out_remove_sysfs;
7837 }
7838 /* MAC Address location in EEPROM same for 3945/4965 */
7839 get_eeprom_mac(priv, priv->mac_addr);
Johannes Berge1749612008-10-27 15:59:26 -07007840 IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
Zhu Yi5a669262008-01-14 17:46:18 -08007841 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
7842
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007843 /***********************
7844 * 5. Setup HW Constants
7845 * ********************/
7846 /* Device-specific setup */
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08007847 if (iwl3945_hw_set_hw_params(priv)) {
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007848 IWL_ERROR("failed to set hw settings\n");
7849 goto out_iounmap;
7850 }
7851
7852 /***********************
7853 * 6. Setup priv
7854 * ********************/
7855 priv->retry_rate = 1;
7856 priv->ibss_beacon = NULL;
7857
7858 spin_lock_init(&priv->lock);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08007859 spin_lock_init(&priv->power_data_39.lock);
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007860 spin_lock_init(&priv->sta_lock);
7861 spin_lock_init(&priv->hcmd_lock);
7862
7863 INIT_LIST_HEAD(&priv->free_frames);
7864 mutex_init(&priv->mutex);
7865
7866 /* Clear the driver's (not device's) station table */
7867 iwl3945_clear_stations_table(priv);
7868
7869 priv->data_retry_limit = -1;
7870 priv->ieee_channels = NULL;
7871 priv->ieee_rates = NULL;
7872 priv->band = IEEE80211_BAND_2GHZ;
7873
7874 priv->iw_mode = NL80211_IFTYPE_STATION;
7875
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007876 iwl3945_reset_qos(priv);
7877
7878 priv->qos_data.qos_active = 0;
7879 priv->qos_data.qos_cap.val = 0;
7880
7881
7882 priv->rates_mask = IWL_RATES_MASK;
7883 /* If power management is turned on, default to AC mode */
Samuel Ortiz1125eff2008-12-19 10:37:14 +08007884 priv->power_mode = IWL39_POWER_AC;
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007885 priv->user_txpower_limit = IWL_DEFAULT_TX_POWER;
7886
Reinette Chatre849e0dc2008-01-23 10:15:18 -08007887 err = iwl3945_init_channel_map(priv);
7888 if (err) {
7889 IWL_ERROR("initializing regulatory failed: %d\n", err);
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007890 goto out_release_irq;
Reinette Chatre849e0dc2008-01-23 10:15:18 -08007891 }
7892
7893 err = iwl3945_init_geos(priv);
7894 if (err) {
7895 IWL_ERROR("initializing geos failed: %d\n", err);
7896 goto out_free_channel_map;
7897 }
Reinette Chatre849e0dc2008-01-23 10:15:18 -08007898
Tomas Winkler978785a2008-12-19 10:37:31 +08007899 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
7900 priv->cfg->name);
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007901
7902 /***********************************
7903 * 7. Initialize Module Parameters
7904 * **********************************/
7905
7906 /* Initialize module parameter values here */
7907 /* Disable radio (SW RF KILL) via parameter when loading driver */
7908 if (iwl3945_param_disable) {
7909 set_bit(STATUS_RF_KILL_SW, &priv->status);
7910 IWL_DEBUG_INFO("Radio disabled.\n");
7911 }
7912
7913
7914 /***********************
7915 * 8. Setup Services
7916 * ********************/
7917
7918 spin_lock_irqsave(&priv->lock, flags);
7919 iwl3945_disable_interrupts(priv);
7920 spin_unlock_irqrestore(&priv->lock, flags);
7921
7922 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
7923 if (err) {
7924 IWL_ERROR("failed to create sysfs device attributes\n");
7925 goto out_free_geos;
7926 }
7927
7928 iwl3945_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
7929 iwl3945_setup_deferred_work(priv);
7930 iwl3945_setup_rx_handlers(priv);
7931
7932 /***********************
7933 * 9. Conclude
7934 * ********************/
7935 pci_save_state(pdev);
7936 pci_disable_device(pdev);
7937
7938 /*********************************
7939 * 10. Setup and Register mac80211
7940 * *******************************/
7941
Zhu Yi5a669262008-01-14 17:46:18 -08007942 err = ieee80211_register_hw(priv->hw);
7943 if (err) {
7944 IWL_ERROR("Failed to register network device (error %d)\n", err);
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007945 goto out_remove_sysfs;
Zhu Yib481de92007-09-25 17:54:57 -07007946 }
7947
Zhu Yi5a669262008-01-14 17:46:18 -08007948 priv->hw->conf.beacon_int = 100;
7949 priv->mac80211_registered = 1;
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007950
Zhu Yib481de92007-09-25 17:54:57 -07007951
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08007952 err = iwl3945_rfkill_init(priv);
7953 if (err)
7954 IWL_ERROR("Unable to initialize RFKILL system. "
7955 "Ignoring error: %d\n", err);
7956
Zhu Yib481de92007-09-25 17:54:57 -07007957 return 0;
7958
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007959 out_remove_sysfs:
7960 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Reinette Chatre849e0dc2008-01-23 10:15:18 -08007961 out_free_geos:
7962 iwl3945_free_geos(priv);
7963 out_free_channel_map:
7964 iwl3945_free_channel_map(priv);
Kolekar, Abhijeetcee53dd2008-11-12 13:14:04 -08007965
Zhu Yib481de92007-09-25 17:54:57 -07007966
7967 out_release_irq:
Zhu Yib481de92007-09-25 17:54:57 -07007968 destroy_workqueue(priv->workqueue);
7969 priv->workqueue = NULL;
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08007970 iwl3945_unset_hw_params(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007971
7972 out_iounmap:
7973 pci_iounmap(pdev, priv->hw_base);
7974 out_pci_release_regions:
7975 pci_release_regions(pdev);
7976 out_pci_disable_device:
7977 pci_disable_device(pdev);
7978 pci_set_drvdata(pdev, NULL);
7979 out_ieee80211_free_hw:
7980 ieee80211_free_hw(priv->hw);
7981 out:
7982 return err;
7983}
7984
Reinette Chatrec83dbf62008-03-21 13:53:41 -07007985static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
Zhu Yib481de92007-09-25 17:54:57 -07007986{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08007987 struct iwl_priv *priv = pci_get_drvdata(pdev);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07007988 unsigned long flags;
Zhu Yib481de92007-09-25 17:54:57 -07007989
7990 if (!priv)
7991 return;
7992
7993 IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
7994
Zhu Yib481de92007-09-25 17:54:57 -07007995 set_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib24d22b2007-12-19 13:59:52 +08007996
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08007997 iwl3945_down(priv);
Zhu Yib481de92007-09-25 17:54:57 -07007998
Mohamed Abbas0359fac2008-03-28 16:21:08 -07007999 /* make sure we flush any pending irq or
8000 * tasklet for the driver
8001 */
8002 spin_lock_irqsave(&priv->lock, flags);
8003 iwl3945_disable_interrupts(priv);
8004 spin_unlock_irqrestore(&priv->lock, flags);
8005
8006 iwl_synchronize_irq(priv);
8007
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008008 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
Zhu Yib481de92007-09-25 17:54:57 -07008009
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008010 iwl3945_rfkill_unregister(priv);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008011 iwl3945_dealloc_ucode_pci(priv);
Zhu Yib481de92007-09-25 17:54:57 -07008012
8013 if (priv->rxq.bd)
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008014 iwl3945_rx_queue_free(priv, &priv->rxq);
8015 iwl3945_hw_txq_ctx_free(priv);
Zhu Yib481de92007-09-25 17:54:57 -07008016
Abhijeet Kolekar3832ec92008-12-19 10:37:26 +08008017 iwl3945_unset_hw_params(priv);
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008018 iwl3945_clear_stations_table(priv);
Zhu Yib481de92007-09-25 17:54:57 -07008019
Tomas Winkler3ac7f142008-07-21 02:40:14 +03008020 if (priv->mac80211_registered)
Zhu Yib481de92007-09-25 17:54:57 -07008021 ieee80211_unregister_hw(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -07008022
Mohamed Abbas6ef89d02007-10-25 17:15:47 +08008023 /*netif_stop_queue(dev); */
8024 flush_workqueue(priv->workqueue);
8025
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008026 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
Zhu Yib481de92007-09-25 17:54:57 -07008027 * priv->workqueue... so we can't take down the workqueue
8028 * until now... */
8029 destroy_workqueue(priv->workqueue);
8030 priv->workqueue = NULL;
8031
Zhu Yib481de92007-09-25 17:54:57 -07008032 pci_iounmap(pdev, priv->hw_base);
8033 pci_release_regions(pdev);
8034 pci_disable_device(pdev);
8035 pci_set_drvdata(pdev, NULL);
8036
Reinette Chatre849e0dc2008-01-23 10:15:18 -08008037 iwl3945_free_channel_map(priv);
8038 iwl3945_free_geos(priv);
Abhijeet Kolekarf2c7e522008-12-19 10:37:27 +08008039 kfree(priv->scan39);
Zhu Yib481de92007-09-25 17:54:57 -07008040 if (priv->ibss_beacon)
8041 dev_kfree_skb(priv->ibss_beacon);
8042
8043 ieee80211_free_hw(priv->hw);
8044}
8045
8046#ifdef CONFIG_PM
8047
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008048static int iwl3945_pci_suspend(struct pci_dev *pdev, pm_message_t state)
Zhu Yib481de92007-09-25 17:54:57 -07008049{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008050 struct iwl_priv *priv = pci_get_drvdata(pdev);
Zhu Yib481de92007-09-25 17:54:57 -07008051
Zhu Yie655b9f2008-01-24 02:19:38 -08008052 if (priv->is_open) {
8053 set_bit(STATUS_IN_SUSPEND, &priv->status);
8054 iwl3945_mac_stop(priv->hw);
8055 priv->is_open = 1;
8056 }
Zhu Yib481de92007-09-25 17:54:57 -07008057
Zhu Yib481de92007-09-25 17:54:57 -07008058 pci_set_power_state(pdev, PCI_D3hot);
8059
Zhu Yib481de92007-09-25 17:54:57 -07008060 return 0;
8061}
8062
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008063static int iwl3945_pci_resume(struct pci_dev *pdev)
Zhu Yib481de92007-09-25 17:54:57 -07008064{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008065 struct iwl_priv *priv = pci_get_drvdata(pdev);
Zhu Yib481de92007-09-25 17:54:57 -07008066
Zhu Yib481de92007-09-25 17:54:57 -07008067 pci_set_power_state(pdev, PCI_D0);
Zhu Yib481de92007-09-25 17:54:57 -07008068
Zhu Yie655b9f2008-01-24 02:19:38 -08008069 if (priv->is_open)
8070 iwl3945_mac_start(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -07008071
Zhu Yie655b9f2008-01-24 02:19:38 -08008072 clear_bit(STATUS_IN_SUSPEND, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07008073 return 0;
8074}
8075
8076#endif /* CONFIG_PM */
8077
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008078/*************** RFKILL FUNCTIONS **********/
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008079#ifdef CONFIG_IWL3945_RFKILL
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008080/* software rf-kill from user */
8081static int iwl3945_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
8082{
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008083 struct iwl_priv *priv = data;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008084 int err = 0;
8085
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008086 if (!priv->rfkill)
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008087 return 0;
8088
8089 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
8090 return 0;
8091
Tomas Winklera96a27f2008-10-23 23:48:56 -07008092 IWL_DEBUG_RF_KILL("we received soft RFKILL set to state %d\n", state);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008093 mutex_lock(&priv->mutex);
8094
8095 switch (state) {
Zhu Yiacdfe9b2008-06-30 17:23:32 +08008096 case RFKILL_STATE_UNBLOCKED:
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008097 if (iwl3945_is_rfkill_hw(priv)) {
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008098 err = -EBUSY;
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008099 goto out_unlock;
8100 }
8101 iwl3945_radio_kill_sw(priv, 0);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008102 break;
Zhu Yiacdfe9b2008-06-30 17:23:32 +08008103 case RFKILL_STATE_SOFT_BLOCKED:
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008104 iwl3945_radio_kill_sw(priv, 1);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008105 break;
Zhu Yiacdfe9b2008-06-30 17:23:32 +08008106 default:
Tomas Winklera96a27f2008-10-23 23:48:56 -07008107 IWL_WARNING("we received unexpected RFKILL state %d\n", state);
Zhu Yiacdfe9b2008-06-30 17:23:32 +08008108 break;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008109 }
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008110out_unlock:
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008111 mutex_unlock(&priv->mutex);
8112
8113 return err;
8114}
8115
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008116int iwl3945_rfkill_init(struct iwl_priv *priv)
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008117{
8118 struct device *device = wiphy_dev(priv->hw->wiphy);
8119 int ret = 0;
8120
8121 BUG_ON(device == NULL);
8122
8123 IWL_DEBUG_RF_KILL("Initializing RFKILL.\n");
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008124 priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
8125 if (!priv->rfkill) {
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008126 IWL_ERROR("Unable to allocate rfkill device.\n");
8127 ret = -ENOMEM;
8128 goto error;
8129 }
8130
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008131 priv->rfkill->name = priv->cfg->name;
8132 priv->rfkill->data = priv;
8133 priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
8134 priv->rfkill->toggle_radio = iwl3945_rfkill_soft_rf_kill;
8135 priv->rfkill->user_claim_unsupported = 1;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008136
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008137 priv->rfkill->dev.class->suspend = NULL;
8138 priv->rfkill->dev.class->resume = NULL;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008139
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008140 ret = rfkill_register(priv->rfkill);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008141 if (ret) {
8142 IWL_ERROR("Unable to register rfkill: %d\n", ret);
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008143 goto freed_rfkill;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008144 }
8145
8146 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8147 return ret;
8148
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008149freed_rfkill:
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008150 if (priv->rfkill != NULL)
8151 rfkill_free(priv->rfkill);
8152 priv->rfkill = NULL;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008153
8154error:
8155 IWL_DEBUG_RF_KILL("RFKILL initialization complete.\n");
8156 return ret;
8157}
8158
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008159void iwl3945_rfkill_unregister(struct iwl_priv *priv)
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008160{
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008161 if (priv->rfkill)
8162 rfkill_unregister(priv->rfkill);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008163
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008164 priv->rfkill = NULL;
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008165}
8166
8167/* set rf-kill to the right state. */
Abhijeet Kolekar4a8a4322008-12-19 10:37:28 +08008168void iwl3945_rfkill_set_hw_state(struct iwl_priv *priv)
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008169{
8170
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008171 if (!priv->rfkill)
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008172 return;
8173
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008174 if (iwl3945_is_rfkill_hw(priv)) {
8175 rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
8176 return;
8177 }
8178
8179 if (!iwl3945_is_rfkill_sw(priv))
8180 rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008181 else
Adel Gadllah80fcc9e2008-07-01 17:49:50 +02008182 rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
Abhijeet Kolekarebef2002008-06-30 17:23:18 +08008183}
8184#endif
8185
Zhu Yib481de92007-09-25 17:54:57 -07008186/*****************************************************************************
8187 *
8188 * driver and module entry point
8189 *
8190 *****************************************************************************/
8191
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008192static struct pci_driver iwl3945_driver = {
Zhu Yib481de92007-09-25 17:54:57 -07008193 .name = DRV_NAME,
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008194 .id_table = iwl3945_hw_card_ids,
8195 .probe = iwl3945_pci_probe,
8196 .remove = __devexit_p(iwl3945_pci_remove),
Zhu Yib481de92007-09-25 17:54:57 -07008197#ifdef CONFIG_PM
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008198 .suspend = iwl3945_pci_suspend,
8199 .resume = iwl3945_pci_resume,
Zhu Yib481de92007-09-25 17:54:57 -07008200#endif
8201};
8202
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008203static int __init iwl3945_init(void)
Zhu Yib481de92007-09-25 17:54:57 -07008204{
8205
8206 int ret;
8207 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
8208 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008209
8210 ret = iwl3945_rate_control_register();
8211 if (ret) {
Samuel Ortiza3139c52008-12-19 10:37:09 +08008212 printk(KERN_ERR DRV_NAME
8213 "Unable to register rate control algorithm: %d\n", ret);
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008214 return ret;
8215 }
8216
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008217 ret = pci_register_driver(&iwl3945_driver);
Zhu Yib481de92007-09-25 17:54:57 -07008218 if (ret) {
Samuel Ortiza3139c52008-12-19 10:37:09 +08008219 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008220 goto error_register;
Zhu Yib481de92007-09-25 17:54:57 -07008221 }
Zhu Yib481de92007-09-25 17:54:57 -07008222
8223 return ret;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008224
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008225error_register:
8226 iwl3945_rate_control_unregister();
8227 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07008228}
8229
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008230static void __exit iwl3945_exit(void)
Zhu Yib481de92007-09-25 17:54:57 -07008231{
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008232 pci_unregister_driver(&iwl3945_driver);
Reinette Chatre897e1cf2008-03-28 16:21:09 -07008233 iwl3945_rate_control_unregister();
Zhu Yib481de92007-09-25 17:54:57 -07008234}
8235
Reinette Chatrea0987a82008-12-02 12:14:06 -08008236MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
Zhu Yi25cb6ca2008-09-11 11:45:22 +08008237
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008238module_param_named(antenna, iwl3945_param_antenna, int, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008239MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008240module_param_named(disable, iwl3945_param_disable, int, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008241MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])");
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008242module_param_named(hwcrypto, iwl3945_param_hwcrypto, int, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008243MODULE_PARM_DESC(hwcrypto,
8244 "using hardware crypto engine (default 0 [software])\n");
Wu, Fengguang95aa1942008-12-17 16:52:30 +08008245module_param_named(debug, iwl3945_param_debug, uint, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008246MODULE_PARM_DESC(debug, "debug output mask");
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008247module_param_named(disable_hw_scan, iwl3945_param_disable_hw_scan, int, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008248MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
8249
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008250module_param_named(queues_num, iwl3945_param_queues_num, int, 0444);
Zhu Yib481de92007-09-25 17:54:57 -07008251MODULE_PARM_DESC(queues_num, "number of hw queues.");
8252
Christoph Hellwigbb8c0932008-01-27 16:41:47 -08008253module_exit(iwl3945_exit);
8254module_init(iwl3945_init);