blob: c35e13c01dbe78c7d73aa2bb829d97d795ebd12b [file] [log] [blame]
Auke Kok9a799d72007-09-15 14:07:45 -07001/*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
Shannon Nelson8c47eaa2010-01-13 01:49:34 +00004 Copyright(c) 1999 - 2010 Intel Corporation.
Auke Kok9a799d72007-09-15 14:07:45 -07005
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
Auke Kok9a799d72007-09-15 14:07:45 -070023 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28#include <linux/types.h>
29#include <linux/module.h>
30#include <linux/pci.h>
31#include <linux/netdevice.h>
32#include <linux/vmalloc.h>
33#include <linux/string.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/tcp.h>
Lucy Liu60127862009-07-22 14:07:33 +000037#include <linux/pkt_sched.h>
Auke Kok9a799d72007-09-15 14:07:45 -070038#include <linux/ipv6.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090039#include <linux/slab.h>
Auke Kok9a799d72007-09-15 14:07:45 -070040#include <net/checksum.h>
41#include <net/ip6_checksum.h>
42#include <linux/ethtool.h>
43#include <linux/if_vlan.h>
Yi Zoueacd73f2009-05-13 13:11:06 +000044#include <scsi/fc/fc_fcoe.h>
Auke Kok9a799d72007-09-15 14:07:45 -070045
46#include "ixgbe.h"
47#include "ixgbe_common.h"
Don Skidmoreee5f7842009-11-06 12:56:20 +000048#include "ixgbe_dcb_82599.h"
Greg Rose1cdd1ec2010-01-09 02:26:46 +000049#include "ixgbe_sriov.h"
Auke Kok9a799d72007-09-15 14:07:45 -070050
51char ixgbe_driver_name[] = "ixgbe";
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070052static const char ixgbe_driver_string[] =
Joe Perchese8e9f692010-09-07 21:34:53 +000053 "Intel(R) 10 Gigabit PCI Express Network Driver";
Auke Kok9a799d72007-09-15 14:07:45 -070054
Don Skidmore99faf682010-07-19 14:00:47 +000055#define DRV_VERSION "2.0.84-k2"
Stephen Hemminger9c8eb722007-10-29 10:46:24 -070056const char ixgbe_driver_version[] = DRV_VERSION;
Shannon Nelson8c47eaa2010-01-13 01:49:34 +000057static char ixgbe_copyright[] = "Copyright (c) 1999-2010 Intel Corporation.";
Auke Kok9a799d72007-09-15 14:07:45 -070058
59static const struct ixgbe_info *ixgbe_info_tbl[] = {
Peter P Waskiewiczb4617242008-09-11 20:04:46 -070060 [board_82598] = &ixgbe_82598_info,
PJ Waskiewicze8e26352009-02-27 15:45:05 +000061 [board_82599] = &ixgbe_82599_info,
Auke Kok9a799d72007-09-15 14:07:45 -070062};
63
64/* ixgbe_pci_tbl - PCI Device ID Table
65 *
66 * Wildcard entries (PCI_ANY_ID) should come last
67 * Last entry must be all 0s
68 *
69 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
70 * Class, Class Mask, private data (not used) }
71 */
Alexey Dobriyana3aa1882010-01-07 11:58:11 +000072static DEFINE_PCI_DEVICE_TABLE(ixgbe_pci_tbl) = {
Don Skidmore1e336d02009-01-26 20:57:51 -080073 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598),
74 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070075 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070076 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070077 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT),
Auke Kok3957d632007-10-31 15:22:10 -070078 board_82598 },
Jesse Brandeburg0befdb32008-10-31 00:46:40 -070079 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT),
80 board_82598 },
Peter P Waskiewicz Jr3845bec2009-07-16 15:50:52 +000081 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2),
82 board_82598 },
Auke Kok9a799d72007-09-15 14:07:45 -070083 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4),
Auke Kok3957d632007-10-31 15:22:10 -070084 board_82598 },
Jesse Brandeburg8d792cd2008-08-08 16:24:19 -070085 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT),
86 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080087 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT),
88 board_82598 },
89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM),
90 board_82598 },
Jesse Brandeburgb95f5fc2008-09-11 19:58:59 -070091 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR),
92 board_82598 },
Donald Skidmorec4900be2008-11-20 21:11:42 -080093 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM),
94 board_82598 },
Don Skidmore2f21bdd2009-02-01 01:18:23 -080095 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX),
96 board_82598 },
PJ Waskiewicze8e26352009-02-27 15:45:05 +000097 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4),
98 board_82599 },
Peter P Waskiewicz Jr1fcf03e2009-05-17 20:58:04 +000099 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM),
100 board_82599 },
Don Skidmore74757d42009-12-08 07:22:23 +0000101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR),
102 board_82599 },
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP),
104 board_82599 },
Don Skidmore38ad1c82009-10-08 15:35:58 +0000105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM),
106 board_82599 },
Don Skidmoredbfec662009-10-02 08:58:25 +0000107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ),
108 board_82599 },
Peter P Waskiewicz Jr89111842009-09-14 07:47:49 +0000109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4),
110 board_82599 },
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -0700111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM),
112 board_82599 },
Don Skidmore312eb932009-10-02 08:58:04 +0000113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE),
114 board_82599 },
Auke Kok9a799d72007-09-15 14:07:45 -0700115
116 /* required last entry */
117 {0, }
118};
119MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
120
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400121#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800122static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +0000123 void *p);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800124static struct notifier_block dca_notifier = {
125 .notifier_call = ixgbe_notify_dca,
126 .next = NULL,
127 .priority = 0
128};
129#endif
130
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000131#ifdef CONFIG_PCI_IOV
132static unsigned int max_vfs;
133module_param(max_vfs, uint, 0);
Joe Perchese8e9f692010-09-07 21:34:53 +0000134MODULE_PARM_DESC(max_vfs,
135 "Maximum number of virtual functions to allocate per physical function");
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000136#endif /* CONFIG_PCI_IOV */
137
Auke Kok9a799d72007-09-15 14:07:45 -0700138MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
139MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
140MODULE_LICENSE("GPL");
141MODULE_VERSION(DRV_VERSION);
142
143#define DEFAULT_DEBUG_LEVEL_SHIFT 3
144
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000145static inline void ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
146{
147 struct ixgbe_hw *hw = &adapter->hw;
148 u32 gcr;
149 u32 gpie;
150 u32 vmdctl;
151
152#ifdef CONFIG_PCI_IOV
153 /* disable iov and allow time for transactions to clear */
154 pci_disable_sriov(adapter->pdev);
155#endif
156
157 /* turn off device IOV mode */
158 gcr = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
159 gcr &= ~(IXGBE_GCR_EXT_SRIOV);
160 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr);
161 gpie = IXGBE_READ_REG(hw, IXGBE_GPIE);
162 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
163 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
164
165 /* set default pool back to 0 */
166 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
167 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
168 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
169
170 /* take a breather then clean up driver data */
171 msleep(100);
Joe Perchese8e9f692010-09-07 21:34:53 +0000172
173 kfree(adapter->vfinfo);
Greg Rose1cdd1ec2010-01-09 02:26:46 +0000174 adapter->vfinfo = NULL;
175
176 adapter->num_vfs = 0;
177 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
178}
179
Taku Izumidcd79ae2010-04-27 14:39:53 +0000180struct ixgbe_reg_info {
181 u32 ofs;
182 char *name;
183};
184
185static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
186
187 /* General Registers */
188 {IXGBE_CTRL, "CTRL"},
189 {IXGBE_STATUS, "STATUS"},
190 {IXGBE_CTRL_EXT, "CTRL_EXT"},
191
192 /* Interrupt Registers */
193 {IXGBE_EICR, "EICR"},
194
195 /* RX Registers */
196 {IXGBE_SRRCTL(0), "SRRCTL"},
197 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
198 {IXGBE_RDLEN(0), "RDLEN"},
199 {IXGBE_RDH(0), "RDH"},
200 {IXGBE_RDT(0), "RDT"},
201 {IXGBE_RXDCTL(0), "RXDCTL"},
202 {IXGBE_RDBAL(0), "RDBAL"},
203 {IXGBE_RDBAH(0), "RDBAH"},
204
205 /* TX Registers */
206 {IXGBE_TDBAL(0), "TDBAL"},
207 {IXGBE_TDBAH(0), "TDBAH"},
208 {IXGBE_TDLEN(0), "TDLEN"},
209 {IXGBE_TDH(0), "TDH"},
210 {IXGBE_TDT(0), "TDT"},
211 {IXGBE_TXDCTL(0), "TXDCTL"},
212
213 /* List Terminator */
214 {}
215};
216
217
218/*
219 * ixgbe_regdump - register printout routine
220 */
221static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
222{
223 int i = 0, j = 0;
224 char rname[16];
225 u32 regs[64];
226
227 switch (reginfo->ofs) {
228 case IXGBE_SRRCTL(0):
229 for (i = 0; i < 64; i++)
230 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
231 break;
232 case IXGBE_DCA_RXCTRL(0):
233 for (i = 0; i < 64; i++)
234 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
235 break;
236 case IXGBE_RDLEN(0):
237 for (i = 0; i < 64; i++)
238 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
239 break;
240 case IXGBE_RDH(0):
241 for (i = 0; i < 64; i++)
242 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
243 break;
244 case IXGBE_RDT(0):
245 for (i = 0; i < 64; i++)
246 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
247 break;
248 case IXGBE_RXDCTL(0):
249 for (i = 0; i < 64; i++)
250 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
251 break;
252 case IXGBE_RDBAL(0):
253 for (i = 0; i < 64; i++)
254 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
255 break;
256 case IXGBE_RDBAH(0):
257 for (i = 0; i < 64; i++)
258 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
259 break;
260 case IXGBE_TDBAL(0):
261 for (i = 0; i < 64; i++)
262 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
263 break;
264 case IXGBE_TDBAH(0):
265 for (i = 0; i < 64; i++)
266 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
267 break;
268 case IXGBE_TDLEN(0):
269 for (i = 0; i < 64; i++)
270 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
271 break;
272 case IXGBE_TDH(0):
273 for (i = 0; i < 64; i++)
274 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
275 break;
276 case IXGBE_TDT(0):
277 for (i = 0; i < 64; i++)
278 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
279 break;
280 case IXGBE_TXDCTL(0):
281 for (i = 0; i < 64; i++)
282 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
283 break;
284 default:
Joe Perchesc7689572010-09-07 21:35:17 +0000285 pr_info("%-15s %08x\n", reginfo->name,
Taku Izumidcd79ae2010-04-27 14:39:53 +0000286 IXGBE_READ_REG(hw, reginfo->ofs));
287 return;
288 }
289
290 for (i = 0; i < 8; i++) {
291 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
Joe Perchesc7689572010-09-07 21:35:17 +0000292 pr_err("%-15s", rname);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000293 for (j = 0; j < 8; j++)
Joe Perchesc7689572010-09-07 21:35:17 +0000294 pr_cont(" %08x", regs[i*8+j]);
295 pr_cont("\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000296 }
297
298}
299
300/*
301 * ixgbe_dump - Print registers, tx-rings and rx-rings
302 */
303static void ixgbe_dump(struct ixgbe_adapter *adapter)
304{
305 struct net_device *netdev = adapter->netdev;
306 struct ixgbe_hw *hw = &adapter->hw;
307 struct ixgbe_reg_info *reginfo;
308 int n = 0;
309 struct ixgbe_ring *tx_ring;
310 struct ixgbe_tx_buffer *tx_buffer_info;
311 union ixgbe_adv_tx_desc *tx_desc;
312 struct my_u0 { u64 a; u64 b; } *u0;
313 struct ixgbe_ring *rx_ring;
314 union ixgbe_adv_rx_desc *rx_desc;
315 struct ixgbe_rx_buffer *rx_buffer_info;
316 u32 staterr;
317 int i = 0;
318
319 if (!netif_msg_hw(adapter))
320 return;
321
322 /* Print netdevice Info */
323 if (netdev) {
324 dev_info(&adapter->pdev->dev, "Net device Info\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000325 pr_info("Device Name state "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000326 "trans_start last_rx\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000327 pr_info("%-15s %016lX %016lX %016lX\n",
328 netdev->name,
329 netdev->state,
330 netdev->trans_start,
331 netdev->last_rx);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000332 }
333
334 /* Print Registers */
335 dev_info(&adapter->pdev->dev, "Register Dump\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000336 pr_info(" Register Name Value\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000337 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
338 reginfo->name; reginfo++) {
339 ixgbe_regdump(hw, reginfo);
340 }
341
342 /* Print TX Ring Summary */
343 if (!netdev || !netif_running(netdev))
344 goto exit;
345
346 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000347 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000348 for (n = 0; n < adapter->num_tx_queues; n++) {
349 tx_ring = adapter->tx_ring[n];
350 tx_buffer_info =
351 &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
Joe Perchesc7689572010-09-07 21:35:17 +0000352 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
Taku Izumidcd79ae2010-04-27 14:39:53 +0000353 n, tx_ring->next_to_use, tx_ring->next_to_clean,
354 (u64)tx_buffer_info->dma,
355 tx_buffer_info->length,
356 tx_buffer_info->next_to_watch,
357 (u64)tx_buffer_info->time_stamp);
358 }
359
360 /* Print TX Rings */
361 if (!netif_msg_tx_done(adapter))
362 goto rx_ring_summary;
363
364 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
365
366 /* Transmit Descriptor Formats
367 *
368 * Advanced Transmit Descriptor
369 * +--------------------------------------------------------------+
370 * 0 | Buffer Address [63:0] |
371 * +--------------------------------------------------------------+
372 * 8 | PAYLEN | PORTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
373 * +--------------------------------------------------------------+
374 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
375 */
376
377 for (n = 0; n < adapter->num_tx_queues; n++) {
378 tx_ring = adapter->tx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000379 pr_info("------------------------------------\n");
380 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
381 pr_info("------------------------------------\n");
382 pr_info("T [desc] [address 63:0 ] "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000383 "[PlPOIdStDDt Ln] [bi->dma ] "
384 "leng ntw timestamp bi->skb\n");
385
386 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
Alexander Duyck31f05a22010-08-19 13:40:31 +0000387 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000388 tx_buffer_info = &tx_ring->tx_buffer_info[i];
389 u0 = (struct my_u0 *)tx_desc;
Joe Perchesc7689572010-09-07 21:35:17 +0000390 pr_info("T [0x%03X] %016llX %016llX %016llX"
Taku Izumidcd79ae2010-04-27 14:39:53 +0000391 " %04X %3X %016llX %p", i,
392 le64_to_cpu(u0->a),
393 le64_to_cpu(u0->b),
394 (u64)tx_buffer_info->dma,
395 tx_buffer_info->length,
396 tx_buffer_info->next_to_watch,
397 (u64)tx_buffer_info->time_stamp,
398 tx_buffer_info->skb);
399 if (i == tx_ring->next_to_use &&
400 i == tx_ring->next_to_clean)
Joe Perchesc7689572010-09-07 21:35:17 +0000401 pr_cont(" NTC/U\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000402 else if (i == tx_ring->next_to_use)
Joe Perchesc7689572010-09-07 21:35:17 +0000403 pr_cont(" NTU\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000404 else if (i == tx_ring->next_to_clean)
Joe Perchesc7689572010-09-07 21:35:17 +0000405 pr_cont(" NTC\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000406 else
Joe Perchesc7689572010-09-07 21:35:17 +0000407 pr_cont("\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000408
409 if (netif_msg_pktdata(adapter) &&
410 tx_buffer_info->dma != 0)
411 print_hex_dump(KERN_INFO, "",
412 DUMP_PREFIX_ADDRESS, 16, 1,
413 phys_to_virt(tx_buffer_info->dma),
414 tx_buffer_info->length, true);
415 }
416 }
417
418 /* Print RX Rings Summary */
419rx_ring_summary:
420 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000421 pr_info("Queue [NTU] [NTC]\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000422 for (n = 0; n < adapter->num_rx_queues; n++) {
423 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000424 pr_info("%5d %5X %5X\n",
425 n, rx_ring->next_to_use, rx_ring->next_to_clean);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000426 }
427
428 /* Print RX Rings */
429 if (!netif_msg_rx_status(adapter))
430 goto exit;
431
432 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
433
434 /* Advanced Receive Descriptor (Read) Format
435 * 63 1 0
436 * +-----------------------------------------------------+
437 * 0 | Packet Buffer Address [63:1] |A0/NSE|
438 * +----------------------------------------------+------+
439 * 8 | Header Buffer Address [63:1] | DD |
440 * +-----------------------------------------------------+
441 *
442 *
443 * Advanced Receive Descriptor (Write-Back) Format
444 *
445 * 63 48 47 32 31 30 21 20 16 15 4 3 0
446 * +------------------------------------------------------+
447 * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS |
448 * | Checksum Ident | | | | Type | Type |
449 * +------------------------------------------------------+
450 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
451 * +------------------------------------------------------+
452 * 63 48 47 32 31 20 19 0
453 */
454 for (n = 0; n < adapter->num_rx_queues; n++) {
455 rx_ring = adapter->rx_ring[n];
Joe Perchesc7689572010-09-07 21:35:17 +0000456 pr_info("------------------------------------\n");
457 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
458 pr_info("------------------------------------\n");
459 pr_info("R [desc] [ PktBuf A0] "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000460 "[ HeadBuf DD] [bi->dma ] [bi->skb] "
461 "<-- Adv Rx Read format\n");
Joe Perchesc7689572010-09-07 21:35:17 +0000462 pr_info("RWB[desc] [PcsmIpSHl PtRs] "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000463 "[vl er S cks ln] ---------------- [bi->skb] "
464 "<-- Adv Rx Write-Back format\n");
465
466 for (i = 0; i < rx_ring->count; i++) {
467 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Alexander Duyck31f05a22010-08-19 13:40:31 +0000468 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
Taku Izumidcd79ae2010-04-27 14:39:53 +0000469 u0 = (struct my_u0 *)rx_desc;
470 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
471 if (staterr & IXGBE_RXD_STAT_DD) {
472 /* Descriptor Done */
Joe Perchesc7689572010-09-07 21:35:17 +0000473 pr_info("RWB[0x%03X] %016llX "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000474 "%016llX ---------------- %p", i,
475 le64_to_cpu(u0->a),
476 le64_to_cpu(u0->b),
477 rx_buffer_info->skb);
478 } else {
Joe Perchesc7689572010-09-07 21:35:17 +0000479 pr_info("R [0x%03X] %016llX "
Taku Izumidcd79ae2010-04-27 14:39:53 +0000480 "%016llX %016llX %p", i,
481 le64_to_cpu(u0->a),
482 le64_to_cpu(u0->b),
483 (u64)rx_buffer_info->dma,
484 rx_buffer_info->skb);
485
486 if (netif_msg_pktdata(adapter)) {
487 print_hex_dump(KERN_INFO, "",
488 DUMP_PREFIX_ADDRESS, 16, 1,
489 phys_to_virt(rx_buffer_info->dma),
490 rx_ring->rx_buf_len, true);
491
492 if (rx_ring->rx_buf_len
493 < IXGBE_RXBUFFER_2048)
494 print_hex_dump(KERN_INFO, "",
495 DUMP_PREFIX_ADDRESS, 16, 1,
496 phys_to_virt(
497 rx_buffer_info->page_dma +
498 rx_buffer_info->page_offset
499 ),
500 PAGE_SIZE/2, true);
501 }
502 }
503
504 if (i == rx_ring->next_to_use)
Joe Perchesc7689572010-09-07 21:35:17 +0000505 pr_cont(" NTU\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000506 else if (i == rx_ring->next_to_clean)
Joe Perchesc7689572010-09-07 21:35:17 +0000507 pr_cont(" NTC\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000508 else
Joe Perchesc7689572010-09-07 21:35:17 +0000509 pr_cont("\n");
Taku Izumidcd79ae2010-04-27 14:39:53 +0000510
511 }
512 }
513
514exit:
515 return;
516}
517
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800518static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
519{
520 u32 ctrl_ext;
521
522 /* Let firmware take over control of h/w */
523 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
524 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000525 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800526}
527
528static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
529{
530 u32 ctrl_ext;
531
532 /* Let firmware know the driver has taken over */
533 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
534 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
Joe Perchese8e9f692010-09-07 21:34:53 +0000535 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -0800536}
Auke Kok9a799d72007-09-15 14:07:45 -0700537
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000538/*
539 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
540 * @adapter: pointer to adapter struct
541 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
542 * @queue: queue to map the corresponding interrupt to
543 * @msix_vector: the vector to map to the corresponding queue
544 *
545 */
546static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
Joe Perchese8e9f692010-09-07 21:34:53 +0000547 u8 queue, u8 msix_vector)
Auke Kok9a799d72007-09-15 14:07:45 -0700548{
549 u32 ivar, index;
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000550 struct ixgbe_hw *hw = &adapter->hw;
551 switch (hw->mac.type) {
552 case ixgbe_mac_82598EB:
553 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
554 if (direction == -1)
555 direction = 0;
556 index = (((direction * 64) + queue) >> 2) & 0x1F;
557 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
558 ivar &= ~(0xFF << (8 * (queue & 0x3)));
559 ivar |= (msix_vector << (8 * (queue & 0x3)));
560 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
561 break;
562 case ixgbe_mac_82599EB:
563 if (direction == -1) {
564 /* other causes */
565 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
566 index = ((queue & 1) * 8);
567 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
568 ivar &= ~(0xFF << index);
569 ivar |= (msix_vector << index);
570 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
571 break;
572 } else {
573 /* tx or rx causes */
574 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
575 index = ((16 * (queue & 1)) + (8 * direction));
576 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
577 ivar &= ~(0xFF << index);
578 ivar |= (msix_vector << index);
579 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
580 break;
581 }
582 default:
583 break;
584 }
Auke Kok9a799d72007-09-15 14:07:45 -0700585}
586
Alexander Duyckfe49f042009-06-04 16:00:09 +0000587static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000588 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +0000589{
590 u32 mask;
591
592 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
593 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
594 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
595 } else {
596 mask = (qmask & 0xFFFFFFFF);
597 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
598 mask = (qmask >> 32);
599 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
600 }
601}
602
Alexander Duyck84418e32010-08-19 13:40:54 +0000603void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000604 struct ixgbe_tx_buffer
605 *tx_buffer_info)
Auke Kok9a799d72007-09-15 14:07:45 -0700606{
Alexander Duycke5a43542009-12-02 16:46:56 +0000607 if (tx_buffer_info->dma) {
608 if (tx_buffer_info->mapped_as_page)
Nick Nunley1b507732010-04-27 13:10:27 +0000609 dma_unmap_page(&adapter->pdev->dev,
Alexander Duycke5a43542009-12-02 16:46:56 +0000610 tx_buffer_info->dma,
611 tx_buffer_info->length,
Nick Nunley1b507732010-04-27 13:10:27 +0000612 DMA_TO_DEVICE);
Alexander Duycke5a43542009-12-02 16:46:56 +0000613 else
Nick Nunley1b507732010-04-27 13:10:27 +0000614 dma_unmap_single(&adapter->pdev->dev,
Alexander Duycke5a43542009-12-02 16:46:56 +0000615 tx_buffer_info->dma,
616 tx_buffer_info->length,
Nick Nunley1b507732010-04-27 13:10:27 +0000617 DMA_TO_DEVICE);
Alexander Duycke5a43542009-12-02 16:46:56 +0000618 tx_buffer_info->dma = 0;
619 }
Auke Kok9a799d72007-09-15 14:07:45 -0700620 if (tx_buffer_info->skb) {
621 dev_kfree_skb_any(tx_buffer_info->skb);
622 tx_buffer_info->skb = NULL;
623 }
Alexander Duyck44df32c2009-03-31 21:34:23 +0000624 tx_buffer_info->time_stamp = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700625 /* tx_buffer_info must be completely set up in the transmit path */
626}
627
Yi Zou26f23d82009-11-06 12:56:00 +0000628/**
John Fastabend7483d9d2010-05-18 16:00:10 +0000629 * ixgbe_tx_xon_state - check the tx ring xon state
Yi Zou26f23d82009-11-06 12:56:00 +0000630 * @adapter: the ixgbe adapter
631 * @tx_ring: the corresponding tx_ring
632 *
633 * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the
634 * corresponding TC of this tx_ring when checking TFCS.
635 *
John Fastabend7483d9d2010-05-18 16:00:10 +0000636 * Returns : true if in xon state (currently not paused)
Yi Zou26f23d82009-11-06 12:56:00 +0000637 */
John Fastabend7483d9d2010-05-18 16:00:10 +0000638static inline bool ixgbe_tx_xon_state(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000639 struct ixgbe_ring *tx_ring)
Yi Zou26f23d82009-11-06 12:56:00 +0000640{
Yi Zou26f23d82009-11-06 12:56:00 +0000641 u32 txoff = IXGBE_TFCS_TXOFF;
642
643#ifdef CONFIG_IXGBE_DCB
John Fastabendca739482010-06-03 17:03:45 +0000644 if (adapter->dcb_cfg.pfc_mode_enable) {
Jaswinder Singh Rajput30b768322009-11-20 04:02:27 +0000645 int tc;
Yi Zou26f23d82009-11-06 12:56:00 +0000646 int reg_idx = tx_ring->reg_idx;
647 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
648
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000649 switch (adapter->hw.mac.type) {
650 case ixgbe_mac_82598EB:
Yi Zou26f23d82009-11-06 12:56:00 +0000651 tc = reg_idx >> 2;
652 txoff = IXGBE_TFCS_TXOFF0;
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000653 break;
654 case ixgbe_mac_82599EB:
Yi Zou26f23d82009-11-06 12:56:00 +0000655 tc = 0;
656 txoff = IXGBE_TFCS_TXOFF;
657 if (dcb_i == 8) {
658 /* TC0, TC1 */
659 tc = reg_idx >> 5;
660 if (tc == 2) /* TC2, TC3 */
661 tc += (reg_idx - 64) >> 4;
662 else if (tc == 3) /* TC4, TC5, TC6, TC7 */
663 tc += 1 + ((reg_idx - 96) >> 3);
664 } else if (dcb_i == 4) {
665 /* TC0, TC1 */
666 tc = reg_idx >> 6;
667 if (tc == 1) {
668 tc += (reg_idx - 64) >> 5;
669 if (tc == 2) /* TC2, TC3 */
670 tc += (reg_idx - 96) >> 4;
671 }
672 }
PJ Waskiewicz6837e892010-01-06 17:50:29 +0000673 break;
674 default:
675 tc = 0;
Yi Zou26f23d82009-11-06 12:56:00 +0000676 }
677 txoff <<= tc;
678 }
679#endif
680 return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff;
681}
682
Auke Kok9a799d72007-09-15 14:07:45 -0700683static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000684 struct ixgbe_ring *tx_ring,
685 unsigned int eop)
Auke Kok9a799d72007-09-15 14:07:45 -0700686{
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700687 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700688
Auke Kok9a799d72007-09-15 14:07:45 -0700689 /* Detect a transmit hang in hardware, this serializes the
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700690 * check with the clearing of time_stamp and movement of eop */
Auke Kok9a799d72007-09-15 14:07:45 -0700691 adapter->detect_tx_hung = false;
Alexander Duyck44df32c2009-03-31 21:34:23 +0000692 if (tx_ring->tx_buffer_info[eop].time_stamp &&
Auke Kok9a799d72007-09-15 14:07:45 -0700693 time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) &&
John Fastabend7483d9d2010-05-18 16:00:10 +0000694 ixgbe_tx_xon_state(adapter, tx_ring)) {
Auke Kok9a799d72007-09-15 14:07:45 -0700695 /* detected Tx unit hang */
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700696 union ixgbe_adv_tx_desc *tx_desc;
Alexander Duyck31f05a22010-08-19 13:40:31 +0000697 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
Emil Tantilov396e7992010-07-01 20:05:12 +0000698 e_err(drv, "Detected Tx Unit Hang\n"
Emil Tantilov849c4542010-06-03 16:53:41 +0000699 " Tx Queue <%d>\n"
700 " TDH, TDT <%x>, <%x>\n"
701 " next_to_use <%x>\n"
702 " next_to_clean <%x>\n"
703 "tx_buffer_info[next_to_clean]\n"
704 " time_stamp <%lx>\n"
705 " jiffies <%lx>\n",
706 tx_ring->queue_index,
707 IXGBE_READ_REG(hw, tx_ring->head),
708 IXGBE_READ_REG(hw, tx_ring->tail),
709 tx_ring->next_to_use, eop,
710 tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
Auke Kok9a799d72007-09-15 14:07:45 -0700711 return true;
712 }
713
714 return false;
715}
716
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700717#define IXGBE_MAX_TXD_PWR 14
718#define IXGBE_MAX_DATA_PER_TXD (1 << IXGBE_MAX_TXD_PWR)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800719
720/* Tx Descriptors needed, worst case */
721#define TXD_USE_COUNT(S) (((S) >> IXGBE_MAX_TXD_PWR) + \
722 (((S) & (IXGBE_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
723#define DESC_NEEDED (TXD_USE_COUNT(IXGBE_MAX_DATA_PER_TXD) /* skb->data */ + \
Peter P Waskiewiczb4617242008-09-11 20:04:46 -0700724 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1) /* for context */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800725
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700726static void ixgbe_tx_timeout(struct net_device *netdev);
727
Auke Kok9a799d72007-09-15 14:07:45 -0700728/**
729 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
Alexander Duyckfe49f042009-06-04 16:00:09 +0000730 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700731 * @tx_ring: tx ring to clean
Auke Kok9a799d72007-09-15 14:07:45 -0700732 **/
Alexander Duyckfe49f042009-06-04 16:00:09 +0000733static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +0000734 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -0700735{
Alexander Duyckfe49f042009-06-04 16:00:09 +0000736 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700737 struct net_device *netdev = adapter->netdev;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800738 union ixgbe_adv_tx_desc *tx_desc, *eop_desc;
739 struct ixgbe_tx_buffer *tx_buffer_info;
740 unsigned int i, eop, count = 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700741 unsigned int total_bytes = 0, total_packets = 0;
Auke Kok9a799d72007-09-15 14:07:45 -0700742
743 i = tx_ring->next_to_clean;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800744 eop = tx_ring->tx_buffer_info[i].next_to_watch;
Alexander Duyck31f05a22010-08-19 13:40:31 +0000745 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800746
747 while ((eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)) &&
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +0000748 (count < tx_ring->work_limit)) {
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800749 bool cleaned = false;
Jeff Kirsher2d0bb1c2010-08-08 16:02:31 +0000750 rmb(); /* read buffer_info after eop_desc */
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800751 for ( ; !cleaned; count++) {
752 struct sk_buff *skb;
Alexander Duyck31f05a22010-08-19 13:40:31 +0000753 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -0700754 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800755 cleaned = (i == eop);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700756 skb = tx_buffer_info->skb;
Auke Kok9a799d72007-09-15 14:07:45 -0700757
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800758 if (cleaned && skb) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800759 unsigned int segs, bytecount;
Yi Zou3d8fd382009-06-08 14:38:44 +0000760 unsigned int hlen = skb_headlen(skb);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700761
762 /* gso_segs is currently only valid for tcp */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800763 segs = skb_shinfo(skb)->gso_segs ?: 1;
Yi Zou3d8fd382009-06-08 14:38:44 +0000764#ifdef IXGBE_FCOE
765 /* adjust for FCoE Sequence Offload */
766 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
767 && (skb->protocol == htons(ETH_P_FCOE)) &&
768 skb_is_gso(skb)) {
769 hlen = skb_transport_offset(skb) +
770 sizeof(struct fc_frame_header) +
771 sizeof(struct fcoe_crc_eof);
772 segs = DIV_ROUND_UP(skb->len - hlen,
773 skb_shinfo(skb)->gso_size);
774 }
775#endif /* IXGBE_FCOE */
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800776 /* multiply data chunks by size of headers */
Yi Zou3d8fd382009-06-08 14:38:44 +0000777 bytecount = ((segs - 1) * hlen) + skb->len;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700778 total_packets += segs;
779 total_bytes += bytecount;
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800780 }
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700781
Auke Kok9a799d72007-09-15 14:07:45 -0700782 ixgbe_unmap_and_free_tx_resource(adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000783 tx_buffer_info);
Auke Kok9a799d72007-09-15 14:07:45 -0700784
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800785 tx_desc->wb.status = 0;
786
Auke Kok9a799d72007-09-15 14:07:45 -0700787 i++;
788 if (i == tx_ring->count)
789 i = 0;
790 }
791
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800792 eop = tx_ring->tx_buffer_info[i].next_to_watch;
Alexander Duyck31f05a22010-08-19 13:40:31 +0000793 eop_desc = IXGBE_TX_DESC_ADV(tx_ring, eop);
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800794 }
795
Auke Kok9a799d72007-09-15 14:07:45 -0700796 tx_ring->next_to_clean = i;
797
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800798#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700799 if (unlikely(count && netif_carrier_ok(netdev) &&
Joe Perchese8e9f692010-09-07 21:34:53 +0000800 (IXGBE_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800801 /* Make sure that anybody stopping the queue after this
802 * sees the new next_to_clean.
803 */
804 smp_mb();
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800805 if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
806 !test_bit(__IXGBE_DOWN, &adapter->state)) {
807 netif_wake_subqueue(netdev, tx_ring->queue_index);
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +0000808 ++tx_ring->restart_queue;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -0800809 }
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -0800810 }
Auke Kok9a799d72007-09-15 14:07:45 -0700811
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700812 if (adapter->detect_tx_hung) {
813 if (ixgbe_check_tx_hang(adapter, tx_ring, i)) {
814 /* schedule immediate reset if we believe we hung */
Emil Tantilov396e7992010-07-01 20:05:12 +0000815 e_info(probe, "tx hang %d detected, resetting "
816 "adapter\n", adapter->tx_timeout_count + 1);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700817 ixgbe_tx_timeout(adapter->netdev);
818 }
819 }
Auke Kok9a799d72007-09-15 14:07:45 -0700820
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700821 /* re-arm the interrupt */
Alexander Duyckfe49f042009-06-04 16:00:09 +0000822 if (count >= tx_ring->work_limit)
823 ixgbe_irq_rearm_queues(adapter, ((u64)1 << q_vector->v_idx));
Auke Kok9a799d72007-09-15 14:07:45 -0700824
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700825 tx_ring->total_bytes += total_bytes;
826 tx_ring->total_packets += total_packets;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -0700827 tx_ring->stats.packets += total_packets;
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -0800828 tx_ring->stats.bytes += total_bytes;
Eric Dumazet807540b2010-09-23 05:40:09 +0000829 return count < tx_ring->work_limit;
Auke Kok9a799d72007-09-15 14:07:45 -0700830}
831
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400832#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800833static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000834 struct ixgbe_ring *rx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800835{
836 u32 rxctrl;
837 int cpu = get_cpu();
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000838 int q = rx_ring->reg_idx;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800839
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700840 if (rx_ring->cpu != cpu) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800841 rxctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000842 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
843 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK;
844 rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
845 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
846 rxctrl &= ~IXGBE_DCA_RXCTRL_CPUID_MASK_82599;
847 rxctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
Joe Perchese8e9f692010-09-07 21:34:53 +0000848 IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599);
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000849 }
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800850 rxctrl |= IXGBE_DCA_RXCTRL_DESC_DCA_EN;
851 rxctrl |= IXGBE_DCA_RXCTRL_HEAD_DCA_EN;
Don Skidmore15005a32009-01-19 16:54:13 -0800852 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_RRO_EN);
853 rxctrl &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
Joe Perchese8e9f692010-09-07 21:34:53 +0000854 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800855 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_RXCTRL(q), rxctrl);
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700856 rx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800857 }
858 put_cpu();
859}
860
861static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +0000862 struct ixgbe_ring *tx_ring)
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800863{
864 u32 txctrl;
865 int cpu = get_cpu();
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000866 int q = tx_ring->reg_idx;
Don Skidmoreee5f7842009-11-06 12:56:20 +0000867 struct ixgbe_hw *hw = &adapter->hw;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800868
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700869 if (tx_ring->cpu != cpu) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000870 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Don Skidmoreee5f7842009-11-06 12:56:20 +0000871 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000872 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK;
873 txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu);
Don Skidmoreee5f7842009-11-06 12:56:20 +0000874 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
875 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000876 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
Don Skidmoreee5f7842009-11-06 12:56:20 +0000877 txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q));
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000878 txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599;
879 txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) <<
Joe Perchese8e9f692010-09-07 21:34:53 +0000880 IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599);
Don Skidmoreee5f7842009-11-06 12:56:20 +0000881 txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN;
882 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl);
PJ Waskiewicze8e26352009-02-27 15:45:05 +0000883 }
Jesse Brandeburg3a581072008-08-26 04:27:08 -0700884 tx_ring->cpu = cpu;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800885 }
886 put_cpu();
887}
888
889static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
890{
891 int i;
892
893 if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
894 return;
895
Alexander Duycke35ec122009-05-21 13:07:12 +0000896 /* always use CB2 mode, difference is masked in the CB driver */
897 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 2);
898
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800899 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000900 adapter->tx_ring[i]->cpu = -1;
901 ixgbe_update_tx_dca(adapter, adapter->tx_ring[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800902 }
903 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +0000904 adapter->rx_ring[i]->cpu = -1;
905 ixgbe_update_rx_dca(adapter, adapter->rx_ring[i]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800906 }
907}
908
909static int __ixgbe_notify_dca(struct device *dev, void *data)
910{
911 struct net_device *netdev = dev_get_drvdata(dev);
912 struct ixgbe_adapter *adapter = netdev_priv(netdev);
913 unsigned long event = *(unsigned long *)data;
914
915 switch (event) {
916 case DCA_PROVIDER_ADD:
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700917 /* if we're already enabled, don't do it again */
918 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
919 break;
Denis V. Lunev652f0932008-03-27 14:39:17 +0300920 if (dca_add_requester(dev) == 0) {
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -0700921 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800922 ixgbe_setup_dca(adapter);
923 break;
924 }
925 /* Fall Through since DCA is disabled. */
926 case DCA_PROVIDER_REMOVE:
927 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
928 dca_remove_requester(dev);
929 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
930 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
931 }
932 break;
933 }
934
Denis V. Lunev652f0932008-03-27 14:39:17 +0300935 return 0;
Jeb Cramerbd0362d2008-03-03 15:04:02 -0800936}
937
Jeff Garzik5dd2d332008-10-16 05:09:31 -0400938#endif /* CONFIG_IXGBE_DCA */
Auke Kok9a799d72007-09-15 14:07:45 -0700939/**
940 * ixgbe_receive_skb - Send a completed packet up the stack
941 * @adapter: board private structure
942 * @skb: packet to send up
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700943 * @status: hardware indication of status of receive
944 * @rx_ring: rx descriptor ring (for a specific queue) to setup
945 * @rx_desc: rx descriptor
Auke Kok9a799d72007-09-15 14:07:45 -0700946 **/
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800947static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +0000948 struct sk_buff *skb, u8 status,
949 struct ixgbe_ring *ring,
950 union ixgbe_adv_rx_desc *rx_desc)
Auke Kok9a799d72007-09-15 14:07:45 -0700951{
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800952 struct ixgbe_adapter *adapter = q_vector->adapter;
953 struct napi_struct *napi = &q_vector->napi;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700954 bool is_vlan = (status & IXGBE_RXD_STAT_VP);
955 u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
Auke Kok9a799d72007-09-15 14:07:45 -0700956
Alexander Duyck182ff8d2009-04-27 22:35:33 +0000957 if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL)) {
Lucy Liu8a62bab2009-08-13 14:09:38 +0000958 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800959 vlan_gro_receive(napi, adapter->vlgrp, tag, skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700960 else
Herbert Xu78b6f4c2009-01-18 21:49:45 -0800961 napi_gro_receive(napi, skb);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -0700962 } else {
Lucy Liu8a62bab2009-08-13 14:09:38 +0000963 if (adapter->vlgrp && is_vlan && (tag & VLAN_VID_MASK))
Alexander Duyck182ff8d2009-04-27 22:35:33 +0000964 vlan_hwaccel_rx(skb, adapter->vlgrp, tag);
965 else
966 netif_rx(skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700967 }
968}
969
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800970/**
971 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
972 * @adapter: address of board private structure
973 * @status_err: hardware indication of status of receive
974 * @skb: skb currently being received and modified
975 **/
Auke Kok9a799d72007-09-15 14:07:45 -0700976static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
Don Skidmore8bae1b22009-07-23 18:00:39 +0000977 union ixgbe_adv_rx_desc *rx_desc,
978 struct sk_buff *skb)
Auke Kok9a799d72007-09-15 14:07:45 -0700979{
Don Skidmore8bae1b22009-07-23 18:00:39 +0000980 u32 status_err = le32_to_cpu(rx_desc->wb.upper.status_error);
981
Eric Dumazetbc8acf22010-09-02 13:07:41 -0700982 skb_checksum_none_assert(skb);
Auke Kok9a799d72007-09-15 14:07:45 -0700983
Jesse Brandeburg712744b2008-08-26 04:26:56 -0700984 /* Rx csum disabled */
985 if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -0700986 return;
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800987
988 /* if IP and error */
989 if ((status_err & IXGBE_RXD_STAT_IPCS) &&
990 (status_err & IXGBE_RXDADV_ERR_IPE)) {
Auke Kok9a799d72007-09-15 14:07:45 -0700991 adapter->hw_csum_rx_error++;
992 return;
993 }
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -0800994
995 if (!(status_err & IXGBE_RXD_STAT_L4CS))
996 return;
997
998 if (status_err & IXGBE_RXDADV_ERR_TCPE) {
Don Skidmore8bae1b22009-07-23 18:00:39 +0000999 u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1000
1001 /*
1002 * 82599 errata, UDP frames with a 0 checksum can be marked as
1003 * checksum errors.
1004 */
1005 if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
1006 (adapter->hw.mac.type == ixgbe_mac_82599EB))
1007 return;
1008
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001009 adapter->hw_csum_rx_error++;
1010 return;
1011 }
1012
Auke Kok9a799d72007-09-15 14:07:45 -07001013 /* It must be a TCP or UDP packet with a valid checksum */
Ayyappan Veeraiyane59bd252008-02-01 15:59:09 -08001014 skb->ip_summed = CHECKSUM_UNNECESSARY;
Auke Kok9a799d72007-09-15 14:07:45 -07001015}
1016
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001017static inline void ixgbe_release_rx_desc(struct ixgbe_hw *hw,
Joe Perchese8e9f692010-09-07 21:34:53 +00001018 struct ixgbe_ring *rx_ring, u32 val)
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001019{
1020 /*
1021 * Force memory writes to complete before letting h/w
1022 * know there are new descriptors to fetch. (Only
1023 * applicable for weak-ordered memory model archs,
1024 * such as IA-64).
1025 */
1026 wmb();
1027 IXGBE_WRITE_REG(hw, IXGBE_RDT(rx_ring->reg_idx), val);
1028}
1029
Auke Kok9a799d72007-09-15 14:07:45 -07001030/**
1031 * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
1032 * @adapter: address of board private structure
1033 **/
Alexander Duyck84418e32010-08-19 13:40:54 +00001034void ixgbe_alloc_rx_buffers(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00001035 struct ixgbe_ring *rx_ring,
1036 int cleaned_count)
Auke Kok9a799d72007-09-15 14:07:45 -07001037{
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001038 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07001039 struct pci_dev *pdev = adapter->pdev;
1040 union ixgbe_adv_rx_desc *rx_desc;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001041 struct ixgbe_rx_buffer *bi;
Auke Kok9a799d72007-09-15 14:07:45 -07001042 unsigned int i;
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001043 unsigned int bufsz = rx_ring->rx_buf_len;
Auke Kok9a799d72007-09-15 14:07:45 -07001044
1045 i = rx_ring->next_to_use;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001046 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07001047
1048 while (cleaned_count--) {
Alexander Duyck31f05a22010-08-19 13:40:31 +00001049 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07001050
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001051 if (!bi->page_dma &&
Yi Zou6e455b892009-08-06 13:05:44 +00001052 (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001053 if (!bi->page) {
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001054 bi->page = netdev_alloc_page(netdev);
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001055 if (!bi->page) {
1056 adapter->alloc_rx_page_failed++;
1057 goto no_buffers;
1058 }
1059 bi->page_offset = 0;
1060 } else {
1061 /* use a half page if we're re-using */
1062 bi->page_offset ^= (PAGE_SIZE / 2);
Auke Kok9a799d72007-09-15 14:07:45 -07001063 }
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001064
Nick Nunley1b507732010-04-27 13:10:27 +00001065 bi->page_dma = dma_map_page(&pdev->dev, bi->page,
Joe Perchese8e9f692010-09-07 21:34:53 +00001066 bi->page_offset,
1067 (PAGE_SIZE / 2),
Nick Nunley1b507732010-04-27 13:10:27 +00001068 DMA_FROM_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07001069 }
1070
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001071 if (!bi->skb) {
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001072 struct sk_buff *skb = netdev_alloc_skb_ip_align(netdev,
1073 bufsz);
1074 bi->skb = skb;
Auke Kok9a799d72007-09-15 14:07:45 -07001075
1076 if (!skb) {
1077 adapter->alloc_rx_buff_failed++;
1078 goto no_buffers;
1079 }
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001080 /* initialize queue mapping */
1081 skb_record_rx_queue(skb, rx_ring->queue_index);
1082 }
Auke Kok9a799d72007-09-15 14:07:45 -07001083
Alexander Duyckd716a7d2010-08-19 13:33:41 +00001084 if (!bi->dma) {
1085 bi->dma = dma_map_single(&pdev->dev,
1086 bi->skb->data,
Joe Perchese8e9f692010-09-07 21:34:53 +00001087 rx_ring->rx_buf_len,
Nick Nunley1b507732010-04-27 13:10:27 +00001088 DMA_FROM_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07001089 }
1090 /* Refresh the desc even if buffer_addrs didn't change because
1091 * each write-back erases this info. */
Yi Zou6e455b892009-08-06 13:05:44 +00001092 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001093 rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
1094 rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07001095 } else {
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001096 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
Alexander Duyck84418e32010-08-19 13:40:54 +00001097 rx_desc->read.hdr_addr = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001098 }
1099
1100 i++;
1101 if (i == rx_ring->count)
1102 i = 0;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001103 bi = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07001104 }
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001105
Auke Kok9a799d72007-09-15 14:07:45 -07001106no_buffers:
1107 if (rx_ring->next_to_use != i) {
1108 rx_ring->next_to_use = i;
1109 if (i-- == 0)
1110 i = (rx_ring->count - 1);
1111
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001112 ixgbe_release_rx_desc(&adapter->hw, rx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07001113 }
1114}
1115
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001116static inline u16 ixgbe_get_hdr_info(union ixgbe_adv_rx_desc *rx_desc)
1117{
1118 return rx_desc->wb.lower.lo_dword.hs_rss.hdr_info;
1119}
1120
1121static inline u16 ixgbe_get_pkt_info(union ixgbe_adv_rx_desc *rx_desc)
1122{
1123 return rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1124}
1125
Alexander Duyckf8212f92009-04-27 22:42:37 +00001126static inline u32 ixgbe_get_rsc_count(union ixgbe_adv_rx_desc *rx_desc)
1127{
1128 return (le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
Joe Perchese8e9f692010-09-07 21:34:53 +00001129 IXGBE_RXDADV_RSCCNT_MASK) >>
1130 IXGBE_RXDADV_RSCCNT_SHIFT;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001131}
1132
1133/**
1134 * ixgbe_transform_rsc_queue - change rsc queue into a full packet
1135 * @skb: pointer to the last skb in the rsc queue
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001136 * @count: pointer to number of packets coalesced in this context
Alexander Duyckf8212f92009-04-27 22:42:37 +00001137 *
1138 * This function changes a queue full of hw rsc buffers into a completed
1139 * packet. It uses the ->prev pointers to find the first packet and then
1140 * turns it into the frag list owner.
1141 **/
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001142static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb,
Joe Perchese8e9f692010-09-07 21:34:53 +00001143 u64 *count)
Alexander Duyckf8212f92009-04-27 22:42:37 +00001144{
1145 unsigned int frag_list_size = 0;
1146
1147 while (skb->prev) {
1148 struct sk_buff *prev = skb->prev;
1149 frag_list_size += skb->len;
1150 skb->prev = NULL;
1151 skb = prev;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001152 *count += 1;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001153 }
1154
1155 skb_shinfo(skb)->frag_list = skb->next;
1156 skb->next = NULL;
1157 skb->len += frag_list_size;
1158 skb->data_len += frag_list_size;
1159 skb->truesize += frag_list_size;
1160 return skb;
1161}
1162
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001163struct ixgbe_rsc_cb {
1164 dma_addr_t dma;
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001165 bool delay_unmap;
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001166};
1167
1168#define IXGBE_RSC_CB(skb) ((struct ixgbe_rsc_cb *)(skb)->cb)
1169
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001170static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00001171 struct ixgbe_ring *rx_ring,
1172 int *work_done, int work_to_do)
Auke Kok9a799d72007-09-15 14:07:45 -07001173{
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001174 struct ixgbe_adapter *adapter = q_vector->adapter;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00001175 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07001176 struct pci_dev *pdev = adapter->pdev;
1177 union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
1178 struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
1179 struct sk_buff *skb;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001180 unsigned int i, rsc_count = 0;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001181 u32 len, staterr;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07001182 u16 hdr_info;
1183 bool cleaned = false;
Auke Kok9a799d72007-09-15 14:07:45 -07001184 int cleaned_count = 0;
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08001185 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
Yi Zou3d8fd382009-06-08 14:38:44 +00001186#ifdef IXGBE_FCOE
1187 int ddp_bytes = 0;
1188#endif /* IXGBE_FCOE */
Auke Kok9a799d72007-09-15 14:07:45 -07001189
1190 i = rx_ring->next_to_clean;
Alexander Duyck31f05a22010-08-19 13:40:31 +00001191 rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07001192 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
1193 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07001194
1195 while (staterr & IXGBE_RXD_STAT_DD) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001196 u32 upper_len = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001197 if (*work_done >= work_to_do)
1198 break;
1199 (*work_done)++;
1200
Milton Miller3c945e52010-02-19 17:44:42 +00001201 rmb(); /* read descriptor and rx_buffer_info after status DD */
Yi Zou6e455b892009-08-06 13:05:44 +00001202 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001203 hdr_info = le16_to_cpu(ixgbe_get_hdr_info(rx_desc));
1204 len = (hdr_info & IXGBE_RXDADV_HDRBUFLEN_MASK) >>
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001205 IXGBE_RXDADV_HDRBUFLEN_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07001206 upper_len = le16_to_cpu(rx_desc->wb.upper.length);
Shannon Nelson0b746e02010-05-18 16:00:03 +00001207 if ((len > IXGBE_RX_HDR_SIZE) ||
1208 (upper_len && !(hdr_info & IXGBE_RXDADV_SPH)))
1209 len = IXGBE_RX_HDR_SIZE;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001210 } else {
Auke Kok9a799d72007-09-15 14:07:45 -07001211 len = le16_to_cpu(rx_desc->wb.upper.length);
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07001212 }
Auke Kok9a799d72007-09-15 14:07:45 -07001213
1214 cleaned = true;
1215 skb = rx_buffer_info->skb;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00001216 prefetch(skb->data);
Auke Kok9a799d72007-09-15 14:07:45 -07001217 rx_buffer_info->skb = NULL;
1218
Alexander Duyck21fa4e62009-06-04 15:59:49 +00001219 if (rx_buffer_info->dma) {
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001220 if ((adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
1221 (!(staterr & IXGBE_RXD_STAT_EOP)) &&
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001222 (!(skb->prev))) {
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001223 /*
1224 * When HWRSC is enabled, delay unmapping
1225 * of the first packet. It carries the
1226 * header information, HW may still
1227 * access the header after the writeback.
1228 * Only unmap it when EOP is reached
1229 */
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001230 IXGBE_RSC_CB(skb)->delay_unmap = true;
Mallikarjuna R Chilakala43634e82010-02-25 23:14:37 +00001231 IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001232 } else {
Nick Nunley1b507732010-04-27 13:10:27 +00001233 dma_unmap_single(&pdev->dev,
Joe Perchese8e9f692010-09-07 21:34:53 +00001234 rx_buffer_info->dma,
1235 rx_ring->rx_buf_len,
1236 DMA_FROM_DEVICE);
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001237 }
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +00001238 rx_buffer_info->dma = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001239 skb_put(skb, len);
1240 }
1241
1242 if (upper_len) {
Nick Nunley1b507732010-04-27 13:10:27 +00001243 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
1244 PAGE_SIZE / 2, DMA_FROM_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07001245 rx_buffer_info->page_dma = 0;
1246 skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
Joe Perchese8e9f692010-09-07 21:34:53 +00001247 rx_buffer_info->page,
1248 rx_buffer_info->page_offset,
1249 upper_len);
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07001250
1251 if ((rx_ring->rx_buf_len > (PAGE_SIZE / 2)) ||
1252 (page_count(rx_buffer_info->page) != 1))
1253 rx_buffer_info->page = NULL;
1254 else
1255 get_page(rx_buffer_info->page);
Auke Kok9a799d72007-09-15 14:07:45 -07001256
1257 skb->len += upper_len;
1258 skb->data_len += upper_len;
1259 skb->truesize += upper_len;
1260 }
1261
1262 i++;
1263 if (i == rx_ring->count)
1264 i = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07001265
Alexander Duyck31f05a22010-08-19 13:40:31 +00001266 next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07001267 prefetch(next_rxd);
Auke Kok9a799d72007-09-15 14:07:45 -07001268 cleaned_count++;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001269
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00001270 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
Alexander Duyckf8212f92009-04-27 22:42:37 +00001271 rsc_count = ixgbe_get_rsc_count(rx_desc);
1272
1273 if (rsc_count) {
1274 u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
1275 IXGBE_RXDADV_NEXTP_SHIFT;
1276 next_buffer = &rx_ring->rx_buffer_info[nextp];
Alexander Duyckf8212f92009-04-27 22:42:37 +00001277 } else {
1278 next_buffer = &rx_ring->rx_buffer_info[i];
1279 }
1280
Auke Kok9a799d72007-09-15 14:07:45 -07001281 if (staterr & IXGBE_RXD_STAT_EOP) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00001282 if (skb->prev)
Joe Perchese8e9f692010-09-07 21:34:53 +00001283 skb = ixgbe_transform_rsc_queue(skb,
1284 &(rx_ring->rsc_count));
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001285 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001286 if (IXGBE_RSC_CB(skb)->delay_unmap) {
Nick Nunley1b507732010-04-27 13:10:27 +00001287 dma_unmap_single(&pdev->dev,
1288 IXGBE_RSC_CB(skb)->dma,
Joe Perchese8e9f692010-09-07 21:34:53 +00001289 rx_ring->rx_buf_len,
Nick Nunley1b507732010-04-27 13:10:27 +00001290 DMA_FROM_DEVICE);
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00001291 IXGBE_RSC_CB(skb)->dma = 0;
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00001292 IXGBE_RSC_CB(skb)->delay_unmap = false;
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00001293 }
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001294 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED)
Joe Perchese8e9f692010-09-07 21:34:53 +00001295 rx_ring->rsc_count +=
1296 skb_shinfo(skb)->nr_frags;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00001297 else
1298 rx_ring->rsc_count++;
1299 rx_ring->rsc_flush++;
1300 }
Auke Kok9a799d72007-09-15 14:07:45 -07001301 rx_ring->stats.packets++;
1302 rx_ring->stats.bytes += skb->len;
1303 } else {
Yi Zou6e455b892009-08-06 13:05:44 +00001304 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00001305 rx_buffer_info->skb = next_buffer->skb;
1306 rx_buffer_info->dma = next_buffer->dma;
1307 next_buffer->skb = skb;
1308 next_buffer->dma = 0;
1309 } else {
1310 skb->next = next_buffer->skb;
1311 skb->next->prev = skb;
1312 }
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00001313 rx_ring->non_eop_descs++;
Auke Kok9a799d72007-09-15 14:07:45 -07001314 goto next_desc;
1315 }
1316
1317 if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) {
1318 dev_kfree_skb_irq(skb);
1319 goto next_desc;
1320 }
1321
Don Skidmore8bae1b22009-07-23 18:00:39 +00001322 ixgbe_rx_checksum(adapter, rx_desc, skb);
Ayyappan Veeraiyand2f4fbe2008-02-01 15:59:19 -08001323
1324 /* probably a little skewed due to removing CRC */
1325 total_rx_bytes += skb->len;
1326 total_rx_packets++;
1327
Jesse Brandeburg74ce8dd2008-09-11 20:03:23 -07001328 skb->protocol = eth_type_trans(skb, adapter->netdev);
Yi Zou332d4a72009-05-13 13:11:53 +00001329#ifdef IXGBE_FCOE
1330 /* if ddp, not passing to ULD unless for FCP_RSP or error */
Yi Zou3d8fd382009-06-08 14:38:44 +00001331 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
1332 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
1333 if (!ddp_bytes)
Yi Zou332d4a72009-05-13 13:11:53 +00001334 goto next_desc;
Yi Zou3d8fd382009-06-08 14:38:44 +00001335 }
Yi Zou332d4a72009-05-13 13:11:53 +00001336#endif /* IXGBE_FCOE */
Alexander Duyckfdaff1c2009-05-06 10:43:47 +00001337 ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
Auke Kok9a799d72007-09-15 14:07:45 -07001338
1339next_desc:
1340 rx_desc->wb.upper.status_error = 0;
1341
1342 /* return some buffers to hardware, one at a time is too slow */
1343 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
1344 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1345 cleaned_count = 0;
1346 }
1347
1348 /* use prefetched values */
1349 rx_desc = next_rxd;
Alexander Duyckf8212f92009-04-27 22:42:37 +00001350 rx_buffer_info = &rx_ring->rx_buffer_info[i];
Auke Kok9a799d72007-09-15 14:07:45 -07001351
1352 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07001353 }
1354
Auke Kok9a799d72007-09-15 14:07:45 -07001355 rx_ring->next_to_clean = i;
1356 cleaned_count = IXGBE_DESC_UNUSED(rx_ring);
1357
1358 if (cleaned_count)
1359 ixgbe_alloc_rx_buffers(adapter, rx_ring, cleaned_count);
1360
Yi Zou3d8fd382009-06-08 14:38:44 +00001361#ifdef IXGBE_FCOE
1362 /* include DDPed FCoE data */
1363 if (ddp_bytes > 0) {
1364 unsigned int mss;
1365
1366 mss = adapter->netdev->mtu - sizeof(struct fcoe_hdr) -
1367 sizeof(struct fc_frame_header) -
1368 sizeof(struct fcoe_crc_eof);
1369 if (mss > 512)
1370 mss &= ~511;
1371 total_rx_bytes += ddp_bytes;
1372 total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss);
1373 }
1374#endif /* IXGBE_FCOE */
1375
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001376 rx_ring->total_packets += total_rx_packets;
1377 rx_ring->total_bytes += total_rx_bytes;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00001378 netdev->stats.rx_bytes += total_rx_bytes;
1379 netdev->stats.rx_packets += total_rx_packets;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001380
Auke Kok9a799d72007-09-15 14:07:45 -07001381 return cleaned;
1382}
1383
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001384static int ixgbe_clean_rxonly(struct napi_struct *, int);
Auke Kok9a799d72007-09-15 14:07:45 -07001385/**
1386 * ixgbe_configure_msix - Configure MSI-X hardware
1387 * @adapter: board private structure
1388 *
1389 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
1390 * interrupts.
1391 **/
1392static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
1393{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001394 struct ixgbe_q_vector *q_vector;
1395 int i, j, q_vectors, v_idx, r_idx;
1396 u32 mask;
Auke Kok9a799d72007-09-15 14:07:45 -07001397
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001398 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1399
Jesse Brandeburg4df10462009-03-13 22:15:31 +00001400 /*
1401 * Populate the IVAR table and set the ITR values to the
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001402 * corresponding register.
1403 */
1404 for (v_idx = 0; v_idx < q_vectors; v_idx++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00001405 q_vector = adapter->q_vector[v_idx];
Akinobu Mita984b3f52010-03-05 13:41:37 -08001406 /* XXX for_each_set_bit(...) */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001407 r_idx = find_first_bit(q_vector->rxr_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00001408 adapter->num_rx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001409
1410 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001411 j = adapter->rx_ring[r_idx]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001412 ixgbe_set_ivar(adapter, 0, j, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001413 r_idx = find_next_bit(q_vector->rxr_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00001414 adapter->num_rx_queues,
1415 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001416 }
1417 r_idx = find_first_bit(q_vector->txr_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00001418 adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001419
1420 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001421 j = adapter->tx_ring[r_idx]->reg_idx;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001422 ixgbe_set_ivar(adapter, 1, j, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001423 r_idx = find_next_bit(q_vector->txr_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00001424 adapter->num_tx_queues,
1425 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001426 }
1427
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001428 if (q_vector->txr_count && !q_vector->rxr_count)
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001429 /* tx only */
1430 q_vector->eitr = adapter->tx_eitr_param;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001431 else if (q_vector->rxr_count)
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001432 /* rx or mixed */
1433 q_vector->eitr = adapter->rx_eitr_param;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001434
Alexander Duyckfe49f042009-06-04 16:00:09 +00001435 ixgbe_write_eitr(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07001436 }
1437
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001438 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
1439 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
Joe Perchese8e9f692010-09-07 21:34:53 +00001440 v_idx);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001441 else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
1442 ixgbe_set_ivar(adapter, -1, 1, v_idx);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001443 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
Auke Kok9a799d72007-09-15 14:07:45 -07001444
Jesse Brandeburg41fb9242008-09-11 19:55:58 -07001445 /* set up to autoclear timer, and the vectors */
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001446 mask = IXGBE_EIMS_ENABLE_MASK;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001447 if (adapter->num_vfs)
1448 mask &= ~(IXGBE_EIMS_OTHER |
1449 IXGBE_EIMS_MAILBOX |
1450 IXGBE_EIMS_LSC);
1451 else
1452 mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_LSC);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001453 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
Auke Kok9a799d72007-09-15 14:07:45 -07001454}
1455
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001456enum latency_range {
1457 lowest_latency = 0,
1458 low_latency = 1,
1459 bulk_latency = 2,
1460 latency_invalid = 255
1461};
1462
1463/**
1464 * ixgbe_update_itr - update the dynamic ITR value based on statistics
1465 * @adapter: pointer to adapter
1466 * @eitr: eitr setting (ints per sec) to give last timeslice
1467 * @itr_setting: current throttle rate in ints/second
1468 * @packets: the number of packets during this measurement interval
1469 * @bytes: the number of bytes during this measurement interval
1470 *
1471 * Stores a new ITR value based on packets and byte
1472 * counts during the last interrupt. The advantage of per interrupt
1473 * computation is faster updates and more accurate ITR for the current
1474 * traffic pattern. Constants in this function were computed
1475 * based on theoretical maximum wire speed and thresholds were set based
1476 * on testing data as well as attempting to minimize response time
1477 * while increasing bulk throughput.
1478 * this functionality is controlled by the InterruptThrottleRate module
1479 * parameter (see ixgbe_param.c)
1480 **/
1481static u8 ixgbe_update_itr(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00001482 u32 eitr, u8 itr_setting,
1483 int packets, int bytes)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001484{
1485 unsigned int retval = itr_setting;
1486 u32 timepassed_us;
1487 u64 bytes_perint;
1488
1489 if (packets == 0)
1490 goto update_itr_done;
1491
1492
1493 /* simple throttlerate management
1494 * 0-20MB/s lowest (100000 ints/s)
1495 * 20-100MB/s low (20000 ints/s)
1496 * 100-1249MB/s bulk (8000 ints/s)
1497 */
1498 /* what was last interrupt timeslice? */
1499 timepassed_us = 1000000/eitr;
1500 bytes_perint = bytes / timepassed_us; /* bytes/usec */
1501
1502 switch (itr_setting) {
1503 case lowest_latency:
1504 if (bytes_perint > adapter->eitr_low)
1505 retval = low_latency;
1506 break;
1507 case low_latency:
1508 if (bytes_perint > adapter->eitr_high)
1509 retval = bulk_latency;
1510 else if (bytes_perint <= adapter->eitr_low)
1511 retval = lowest_latency;
1512 break;
1513 case bulk_latency:
1514 if (bytes_perint <= adapter->eitr_high)
1515 retval = low_latency;
1516 break;
1517 }
1518
1519update_itr_done:
1520 return retval;
1521}
1522
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001523/**
1524 * ixgbe_write_eitr - write EITR register in hardware specific way
Alexander Duyckfe49f042009-06-04 16:00:09 +00001525 * @q_vector: structure containing interrupt and ring information
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001526 *
1527 * This function is made to be called by ethtool and by the driver
1528 * when it needs to update EITR registers at runtime. Hardware
1529 * specific quirks/differences are taken care of here.
1530 */
Alexander Duyckfe49f042009-06-04 16:00:09 +00001531void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001532{
Alexander Duyckfe49f042009-06-04 16:00:09 +00001533 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001534 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001535 int v_idx = q_vector->v_idx;
1536 u32 itr_reg = EITR_INTS_PER_SEC_TO_REG(q_vector->eitr);
1537
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001538 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1539 /* must write high and low 16 bits to reset counter */
1540 itr_reg |= (itr_reg << 16);
1541 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
1542 /*
Jesse Brandeburgf8d1dca2010-04-27 01:37:20 +00001543 * 82599 can support a value of zero, so allow it for
1544 * max interrupt rate, but there is an errata where it can
1545 * not be zero with RSC
1546 */
1547 if (itr_reg == 8 &&
1548 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
1549 itr_reg = 0;
1550
1551 /*
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001552 * set the WDIS bit to not clear the timer bits and cause an
1553 * immediate assertion of the interrupt
1554 */
1555 itr_reg |= IXGBE_EITR_CNT_WDIS;
1556 }
1557 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
1558}
1559
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001560static void ixgbe_set_itr_msix(struct ixgbe_q_vector *q_vector)
1561{
1562 struct ixgbe_adapter *adapter = q_vector->adapter;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001563 u32 new_itr;
1564 u8 current_itr, ret_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001565 int i, r_idx;
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001566 struct ixgbe_ring *rx_ring, *tx_ring;
1567
1568 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1569 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001570 tx_ring = adapter->tx_ring[r_idx];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001571 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Joe Perchese8e9f692010-09-07 21:34:53 +00001572 q_vector->tx_itr,
1573 tx_ring->total_packets,
1574 tx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001575 /* if the result for this queue would decrease interrupt
1576 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001577 q_vector->tx_itr = ((q_vector->tx_itr > ret_itr) ?
Joe Perchese8e9f692010-09-07 21:34:53 +00001578 q_vector->tx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001579 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001580 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001581 }
1582
1583 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1584 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001585 rx_ring = adapter->rx_ring[r_idx];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001586 ret_itr = ixgbe_update_itr(adapter, q_vector->eitr,
Joe Perchese8e9f692010-09-07 21:34:53 +00001587 q_vector->rx_itr,
1588 rx_ring->total_packets,
1589 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001590 /* if the result for this queue would decrease interrupt
1591 * rate for this vector then use that result */
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001592 q_vector->rx_itr = ((q_vector->rx_itr > ret_itr) ?
Joe Perchese8e9f692010-09-07 21:34:53 +00001593 q_vector->rx_itr - 1 : ret_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001594 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001595 r_idx + 1);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001596 }
1597
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001598 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001599
1600 switch (current_itr) {
1601 /* counts and packets in update_itr are dependent on these numbers */
1602 case lowest_latency:
1603 new_itr = 100000;
1604 break;
1605 case low_latency:
1606 new_itr = 20000; /* aka hwitr = ~200 */
1607 break;
1608 case bulk_latency:
1609 default:
1610 new_itr = 8000;
1611 break;
1612 }
1613
1614 if (new_itr != q_vector->eitr) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00001615 /* do an exponential smoothing */
1616 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
Jesse Brandeburg509ee932009-03-13 22:13:28 +00001617
1618 /* save the algorithm value here, not the smoothed one */
1619 q_vector->eitr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00001620
1621 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001622 }
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001623}
1624
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001625/**
1626 * ixgbe_check_overtemp_task - worker thread to check over tempurature
1627 * @work: pointer to work_struct containing our data
1628 **/
1629static void ixgbe_check_overtemp_task(struct work_struct *work)
1630{
1631 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00001632 struct ixgbe_adapter,
1633 check_overtemp_task);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001634 struct ixgbe_hw *hw = &adapter->hw;
1635 u32 eicr = adapter->interrupt_event;
1636
Joe Perches7ca647b2010-09-07 21:35:40 +00001637 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
1638 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001639
Joe Perches7ca647b2010-09-07 21:35:40 +00001640 switch (hw->device_id) {
1641 case IXGBE_DEV_ID_82599_T3_LOM: {
1642 u32 autoneg;
1643 bool link_up = false;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001644
Joe Perches7ca647b2010-09-07 21:35:40 +00001645 if (hw->mac.ops.check_link)
1646 hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
1647
1648 if (((eicr & IXGBE_EICR_GPI_SDP0) && (!link_up)) ||
1649 (eicr & IXGBE_EICR_LSC))
1650 /* Check if this is due to overtemp */
1651 if (hw->phy.ops.check_overtemp(hw) == IXGBE_ERR_OVERTEMP)
1652 break;
1653 return;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001654 }
Joe Perches7ca647b2010-09-07 21:35:40 +00001655 default:
1656 if (!(eicr & IXGBE_EICR_GPI_SDP0))
1657 return;
1658 break;
1659 }
1660 e_crit(drv,
1661 "Network adapter has been stopped because it has over heated. "
1662 "Restart the computer. If the problem persists, "
1663 "power off the system and replace the adapter\n");
1664 /* write to clear the interrupt */
1665 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001666}
1667
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001668static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
1669{
1670 struct ixgbe_hw *hw = &adapter->hw;
1671
1672 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
1673 (eicr & IXGBE_EICR_GPI_SDP1)) {
Emil Tantilov396e7992010-07-01 20:05:12 +00001674 e_crit(probe, "Fan has stopped, replace the adapter\n");
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001675 /* write to clear the interrupt */
1676 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1677 }
1678}
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001679
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001680static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
1681{
1682 struct ixgbe_hw *hw = &adapter->hw;
1683
1684 if (eicr & IXGBE_EICR_GPI_SDP1) {
1685 /* Clear the interrupt */
1686 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1);
1687 schedule_work(&adapter->multispeed_fiber_task);
1688 } else if (eicr & IXGBE_EICR_GPI_SDP2) {
1689 /* Clear the interrupt */
1690 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP2);
1691 schedule_work(&adapter->sfp_config_module_task);
1692 } else {
1693 /* Interrupt isn't for us... */
1694 return;
1695 }
1696}
1697
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001698static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
1699{
1700 struct ixgbe_hw *hw = &adapter->hw;
1701
1702 adapter->lsc_int++;
1703 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
1704 adapter->link_check_timeout = jiffies;
1705 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1706 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
Nelson, Shannon8a0717f2009-11-12 18:47:11 +00001707 IXGBE_WRITE_FLUSH(hw);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001708 schedule_work(&adapter->watchdog_task);
1709 }
1710}
1711
Auke Kok9a799d72007-09-15 14:07:45 -07001712static irqreturn_t ixgbe_msix_lsc(int irq, void *data)
1713{
1714 struct net_device *netdev = data;
1715 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1716 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore54037502009-02-21 15:42:56 -08001717 u32 eicr;
1718
1719 /*
1720 * Workaround for Silicon errata. Use clear-by-write instead
1721 * of clear-by-read. Reading with EICS will return the
1722 * interrupt causes without clearing, which later be done
1723 * with the write to EICR.
1724 */
1725 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
1726 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
Auke Kok9a799d72007-09-15 14:07:45 -07001727
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07001728 if (eicr & IXGBE_EICR_LSC)
1729 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001730
Greg Rose1cdd1ec2010-01-09 02:26:46 +00001731 if (eicr & IXGBE_EICR_MAILBOX)
1732 ixgbe_msg_task(adapter);
1733
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001734 if (hw->mac.type == ixgbe_mac_82598EB)
1735 ixgbe_check_fan_failure(adapter, eicr);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07001736
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001737 if (hw->mac.type == ixgbe_mac_82599EB) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00001738 ixgbe_check_sfp_event(adapter, eicr);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07001739 adapter->interrupt_event = eicr;
1740 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
1741 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
1742 schedule_work(&adapter->check_overtemp_task);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001743
1744 /* Handle Flow Director Full threshold interrupt */
1745 if (eicr & IXGBE_EICR_FLOW_DIR) {
1746 int i;
1747 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_FLOW_DIR);
1748 /* Disable transmits before FDIR Re-initialization */
1749 netif_tx_stop_all_queues(netdev);
1750 for (i = 0; i < adapter->num_tx_queues; i++) {
1751 struct ixgbe_ring *tx_ring =
Joe Perchese8e9f692010-09-07 21:34:53 +00001752 adapter->tx_ring[i];
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001753 if (test_and_clear_bit(__IXGBE_FDIR_INIT_DONE,
Joe Perchese8e9f692010-09-07 21:34:53 +00001754 &tx_ring->reinit_state))
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00001755 schedule_work(&adapter->fdir_reinit_task);
1756 }
1757 }
1758 }
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08001759 if (!test_bit(__IXGBE_DOWN, &adapter->state))
1760 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_OTHER);
Auke Kok9a799d72007-09-15 14:07:45 -07001761
1762 return IRQ_HANDLED;
1763}
1764
Alexander Duyckfe49f042009-06-04 16:00:09 +00001765static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
1766 u64 qmask)
1767{
1768 u32 mask;
1769
1770 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1771 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1772 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
1773 } else {
1774 mask = (qmask & 0xFFFFFFFF);
1775 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(0), mask);
1776 mask = (qmask >> 32);
1777 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS_EX(1), mask);
1778 }
1779 /* skip the flush */
1780}
1781
1782static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00001783 u64 qmask)
Alexander Duyckfe49f042009-06-04 16:00:09 +00001784{
1785 u32 mask;
1786
1787 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
1788 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
1789 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask);
1790 } else {
1791 mask = (qmask & 0xFFFFFFFF);
1792 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), mask);
1793 mask = (qmask >> 32);
1794 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), mask);
1795 }
1796 /* skip the flush */
1797}
1798
Auke Kok9a799d72007-09-15 14:07:45 -07001799static irqreturn_t ixgbe_msix_clean_tx(int irq, void *data)
1800{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001801 struct ixgbe_q_vector *q_vector = data;
1802 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001803 struct ixgbe_ring *tx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001804 int i, r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -07001805
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001806 if (!q_vector->txr_count)
1807 return IRQ_HANDLED;
1808
1809 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1810 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001811 tx_ring = adapter->tx_ring[r_idx];
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001812 tx_ring->total_bytes = 0;
1813 tx_ring->total_packets = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001814 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001815 r_idx + 1);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001816 }
1817
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001818 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck91281fd2009-06-04 16:00:27 +00001819 napi_schedule(&q_vector->napi);
1820
Auke Kok9a799d72007-09-15 14:07:45 -07001821 return IRQ_HANDLED;
1822}
1823
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001824/**
1825 * ixgbe_msix_clean_rx - single unshared vector rx clean (all queues)
1826 * @irq: unused
1827 * @data: pointer to our q_vector struct for this interrupt vector
1828 **/
Auke Kok9a799d72007-09-15 14:07:45 -07001829static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
1830{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001831 struct ixgbe_q_vector *q_vector = data;
1832 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001833 struct ixgbe_ring *rx_ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001834 int r_idx;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001835 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07001836
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001837 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001838 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001839 rx_ring = adapter->rx_ring[r_idx];
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001840 rx_ring->total_bytes = 0;
1841 rx_ring->total_packets = 0;
1842 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001843 r_idx + 1);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07001844 }
1845
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001846 if (!q_vector->rxr_count)
1847 return IRQ_HANDLED;
1848
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001849 /* disable interrupts on this vector only */
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001850 /* EIAM disabled interrupts (on this vector) for us */
Ben Hutchings288379f2009-01-19 16:43:59 -08001851 napi_schedule(&q_vector->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001852
Auke Kok9a799d72007-09-15 14:07:45 -07001853 return IRQ_HANDLED;
1854}
1855
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001856static irqreturn_t ixgbe_msix_clean_many(int irq, void *data)
1857{
Alexander Duyck91281fd2009-06-04 16:00:27 +00001858 struct ixgbe_q_vector *q_vector = data;
1859 struct ixgbe_adapter *adapter = q_vector->adapter;
1860 struct ixgbe_ring *ring;
1861 int r_idx;
1862 int i;
1863
1864 if (!q_vector->txr_count && !q_vector->rxr_count)
1865 return IRQ_HANDLED;
1866
1867 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1868 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001869 ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001870 ring->total_bytes = 0;
1871 ring->total_packets = 0;
1872 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001873 r_idx + 1);
Alexander Duyck91281fd2009-06-04 16:00:27 +00001874 }
1875
1876 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1877 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001878 ring = adapter->rx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001879 ring->total_bytes = 0;
1880 ring->total_packets = 0;
1881 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001882 r_idx + 1);
Alexander Duyck91281fd2009-06-04 16:00:27 +00001883 }
1884
Jesse Brandeburg9b471442009-12-03 11:33:54 +00001885 /* EIAM disabled interrupts (on this vector) for us */
Alexander Duyck91281fd2009-06-04 16:00:27 +00001886 napi_schedule(&q_vector->napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001887
1888 return IRQ_HANDLED;
1889}
1890
1891/**
1892 * ixgbe_clean_rxonly - msix (aka one shot) rx clean routine
1893 * @napi: napi struct with our devices info in it
1894 * @budget: amount of work driver is allowed to do this pass, in packets
1895 *
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001896 * This function is optimized for cleaning one queue only on a single
1897 * q_vector!!!
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001898 **/
Auke Kok9a799d72007-09-15 14:07:45 -07001899static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
1900{
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001901 struct ixgbe_q_vector *q_vector =
Joe Perchese8e9f692010-09-07 21:34:53 +00001902 container_of(napi, struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001903 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001904 struct ixgbe_ring *rx_ring = NULL;
Auke Kok9a799d72007-09-15 14:07:45 -07001905 int work_done = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001906 long r_idx;
Auke Kok9a799d72007-09-15 14:07:45 -07001907
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001908 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001909 rx_ring = adapter->rx_ring[r_idx];
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001910#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001911 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Jesse Brandeburg3a581072008-08-26 04:27:08 -07001912 ixgbe_update_rx_dca(adapter, rx_ring);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08001913#endif
Auke Kok9a799d72007-09-15 14:07:45 -07001914
Herbert Xu78b6f4c2009-01-18 21:49:45 -08001915 ixgbe_clean_rx_irq(q_vector, rx_ring, &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07001916
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08001917 /* If all Rx work done, exit the polling mode */
1918 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001919 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001920 if (adapter->rx_itr_setting & 1)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08001921 ixgbe_set_itr_msix(q_vector);
Auke Kok9a799d72007-09-15 14:07:45 -07001922 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyckfe49f042009-06-04 16:00:09 +00001923 ixgbe_irq_enable_queues(adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00001924 ((u64)1 << q_vector->v_idx));
Auke Kok9a799d72007-09-15 14:07:45 -07001925 }
1926
1927 return work_done;
1928}
1929
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001930/**
Alexander Duyck91281fd2009-06-04 16:00:27 +00001931 * ixgbe_clean_rxtx_many - msix (aka one shot) rx clean routine
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001932 * @napi: napi struct with our devices info in it
1933 * @budget: amount of work driver is allowed to do this pass, in packets
1934 *
1935 * This function will clean more than one rx queue associated with a
1936 * q_vector.
1937 **/
Alexander Duyck91281fd2009-06-04 16:00:27 +00001938static int ixgbe_clean_rxtx_many(struct napi_struct *napi, int budget)
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001939{
1940 struct ixgbe_q_vector *q_vector =
Joe Perchese8e9f692010-09-07 21:34:53 +00001941 container_of(napi, struct ixgbe_q_vector, napi);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001942 struct ixgbe_adapter *adapter = q_vector->adapter;
Alexander Duyck91281fd2009-06-04 16:00:27 +00001943 struct ixgbe_ring *ring = NULL;
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001944 int work_done = 0, i;
1945 long r_idx;
Alexander Duyck91281fd2009-06-04 16:00:27 +00001946 bool tx_clean_complete = true;
1947
1948 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
1949 for (i = 0; i < q_vector->txr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001950 ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00001951#ifdef CONFIG_IXGBE_DCA
1952 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1953 ixgbe_update_tx_dca(adapter, ring);
1954#endif
1955 tx_clean_complete &= ixgbe_clean_tx_irq(q_vector, ring);
1956 r_idx = find_next_bit(q_vector->txr_idx, adapter->num_tx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001957 r_idx + 1);
Alexander Duyck91281fd2009-06-04 16:00:27 +00001958 }
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001959
1960 /* attempt to distribute budget to each queue fairly, but don't allow
1961 * the budget to go below 1 because we'll exit polling */
1962 budget /= (q_vector->rxr_count ?: 1);
1963 budget = max(budget, 1);
1964 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
1965 for (i = 0; i < q_vector->rxr_count; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001966 ring = adapter->rx_ring[r_idx];
Jeff Garzik5dd2d332008-10-16 05:09:31 -04001967#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001968 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
Alexander Duyck91281fd2009-06-04 16:00:27 +00001969 ixgbe_update_rx_dca(adapter, ring);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001970#endif
Alexander Duyck91281fd2009-06-04 16:00:27 +00001971 ixgbe_clean_rx_irq(q_vector, ring, &work_done, budget);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001972 r_idx = find_next_bit(q_vector->rxr_idx, adapter->num_rx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00001973 r_idx + 1);
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001974 }
1975
1976 r_idx = find_first_bit(q_vector->rxr_idx, adapter->num_rx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00001977 ring = adapter->rx_ring[r_idx];
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001978 /* If all Rx work done, exit the polling mode */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07001979 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08001980 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00001981 if (adapter->rx_itr_setting & 1)
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001982 ixgbe_set_itr_msix(q_vector);
1983 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Alexander Duyckfe49f042009-06-04 16:00:09 +00001984 ixgbe_irq_enable_queues(adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00001985 ((u64)1 << q_vector->v_idx));
Jesse Brandeburgf0848272008-09-11 19:59:42 -07001986 return 0;
1987 }
1988
1989 return work_done;
1990}
Alexander Duyck91281fd2009-06-04 16:00:27 +00001991
1992/**
1993 * ixgbe_clean_txonly - msix (aka one shot) tx clean routine
1994 * @napi: napi struct with our devices info in it
1995 * @budget: amount of work driver is allowed to do this pass, in packets
1996 *
1997 * This function is optimized for cleaning one queue only on a single
1998 * q_vector!!!
1999 **/
2000static int ixgbe_clean_txonly(struct napi_struct *napi, int budget)
2001{
2002 struct ixgbe_q_vector *q_vector =
Joe Perchese8e9f692010-09-07 21:34:53 +00002003 container_of(napi, struct ixgbe_q_vector, napi);
Alexander Duyck91281fd2009-06-04 16:00:27 +00002004 struct ixgbe_adapter *adapter = q_vector->adapter;
2005 struct ixgbe_ring *tx_ring = NULL;
2006 int work_done = 0;
2007 long r_idx;
2008
2009 r_idx = find_first_bit(q_vector->txr_idx, adapter->num_tx_queues);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002010 tx_ring = adapter->tx_ring[r_idx];
Alexander Duyck91281fd2009-06-04 16:00:27 +00002011#ifdef CONFIG_IXGBE_DCA
2012 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2013 ixgbe_update_tx_dca(adapter, tx_ring);
2014#endif
2015
2016 if (!ixgbe_clean_tx_irq(q_vector, tx_ring))
2017 work_done = budget;
2018
Nelson, Shannonf7554a22009-09-18 09:46:06 +00002019 /* If all Tx work done, exit the polling mode */
Alexander Duyck91281fd2009-06-04 16:00:27 +00002020 if (work_done < budget) {
2021 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00002022 if (adapter->tx_itr_setting & 1)
Alexander Duyck91281fd2009-06-04 16:00:27 +00002023 ixgbe_set_itr_msix(q_vector);
2024 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Joe Perchese8e9f692010-09-07 21:34:53 +00002025 ixgbe_irq_enable_queues(adapter,
2026 ((u64)1 << q_vector->v_idx));
Alexander Duyck91281fd2009-06-04 16:00:27 +00002027 }
2028
2029 return work_done;
2030}
2031
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002032static inline void map_vector_to_rxq(struct ixgbe_adapter *a, int v_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00002033 int r_idx)
Auke Kok9a799d72007-09-15 14:07:45 -07002034{
Alexander Duyck7a921c92009-05-06 10:43:28 +00002035 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2036
2037 set_bit(r_idx, q_vector->rxr_idx);
2038 q_vector->rxr_count++;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002039}
Auke Kok9a799d72007-09-15 14:07:45 -07002040
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002041static inline void map_vector_to_txq(struct ixgbe_adapter *a, int v_idx,
Joe Perchese8e9f692010-09-07 21:34:53 +00002042 int t_idx)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002043{
Alexander Duyck7a921c92009-05-06 10:43:28 +00002044 struct ixgbe_q_vector *q_vector = a->q_vector[v_idx];
2045
2046 set_bit(t_idx, q_vector->txr_idx);
2047 q_vector->txr_count++;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002048}
Auke Kok9a799d72007-09-15 14:07:45 -07002049
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002050/**
2051 * ixgbe_map_rings_to_vectors - Maps descriptor rings to vectors
2052 * @adapter: board private structure to initialize
2053 * @vectors: allotted vector count for descriptor rings
2054 *
2055 * This function maps descriptor rings to the queue-specific vectors
2056 * we were allotted through the MSI-X enabling code. Ideally, we'd have
2057 * one vector per ring/queue, but on a constrained vector budget, we
2058 * group the rings as "efficiently" as possible. You would add new
2059 * mapping configurations in here.
2060 **/
2061static int ixgbe_map_rings_to_vectors(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00002062 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002063{
2064 int v_start = 0;
2065 int rxr_idx = 0, txr_idx = 0;
2066 int rxr_remaining = adapter->num_rx_queues;
2067 int txr_remaining = adapter->num_tx_queues;
2068 int i, j;
2069 int rqpv, tqpv;
2070 int err = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07002071
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002072 /* No mapping required if MSI-X is disabled. */
2073 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
Auke Kok9a799d72007-09-15 14:07:45 -07002074 goto out;
2075
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002076 /*
2077 * The ideal configuration...
2078 * We have enough vectors to map one per queue.
2079 */
2080 if (vectors == adapter->num_rx_queues + adapter->num_tx_queues) {
2081 for (; rxr_idx < rxr_remaining; v_start++, rxr_idx++)
2082 map_vector_to_rxq(adapter, v_start, rxr_idx);
2083
2084 for (; txr_idx < txr_remaining; v_start++, txr_idx++)
2085 map_vector_to_txq(adapter, v_start, txr_idx);
2086
2087 goto out;
2088 }
2089
2090 /*
2091 * If we don't have enough vectors for a 1-to-1
2092 * mapping, we'll have to group them so there are
2093 * multiple queues per vector.
2094 */
2095 /* Re-adjusting *qpv takes care of the remainder. */
2096 for (i = v_start; i < vectors; i++) {
2097 rqpv = DIV_ROUND_UP(rxr_remaining, vectors - i);
2098 for (j = 0; j < rqpv; j++) {
2099 map_vector_to_rxq(adapter, i, rxr_idx);
2100 rxr_idx++;
2101 rxr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07002102 }
Auke Kok9a799d72007-09-15 14:07:45 -07002103 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002104 for (i = v_start; i < vectors; i++) {
2105 tqpv = DIV_ROUND_UP(txr_remaining, vectors - i);
2106 for (j = 0; j < tqpv; j++) {
2107 map_vector_to_txq(adapter, i, txr_idx);
2108 txr_idx++;
2109 txr_remaining--;
Auke Kok9a799d72007-09-15 14:07:45 -07002110 }
Auke Kok9a799d72007-09-15 14:07:45 -07002111 }
2112
Auke Kok9a799d72007-09-15 14:07:45 -07002113out:
Auke Kok9a799d72007-09-15 14:07:45 -07002114 return err;
2115}
2116
2117/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002118 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2119 * @adapter: board private structure
2120 *
2121 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2122 * interrupts from the kernel.
2123 **/
2124static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2125{
2126 struct net_device *netdev = adapter->netdev;
2127 irqreturn_t (*handler)(int, void *);
2128 int i, vector, q_vectors, err;
Joe Perchese8e9f692010-09-07 21:34:53 +00002129 int ri = 0, ti = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002130
2131 /* Decrement for Other and TCP Timer vectors */
2132 q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2133
2134 /* Map the Tx/Rx rings to the vectors we were allotted. */
2135 err = ixgbe_map_rings_to_vectors(adapter, q_vectors);
2136 if (err)
2137 goto out;
2138
2139#define SET_HANDLER(_v) ((!(_v)->rxr_count) ? &ixgbe_msix_clean_tx : \
Joe Perchese8e9f692010-09-07 21:34:53 +00002140 (!(_v)->txr_count) ? &ixgbe_msix_clean_rx : \
2141 &ixgbe_msix_clean_many)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002142 for (vector = 0; vector < q_vectors; vector++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00002143 handler = SET_HANDLER(adapter->q_vector[vector]);
Robert Olssoncb13fc22008-11-25 16:43:52 -08002144
Joe Perchese8e9f692010-09-07 21:34:53 +00002145 if (handler == &ixgbe_msix_clean_rx) {
Robert Olssoncb13fc22008-11-25 16:43:52 -08002146 sprintf(adapter->name[vector], "%s-%s-%d",
2147 netdev->name, "rx", ri++);
Joe Perchese8e9f692010-09-07 21:34:53 +00002148 } else if (handler == &ixgbe_msix_clean_tx) {
Robert Olssoncb13fc22008-11-25 16:43:52 -08002149 sprintf(adapter->name[vector], "%s-%s-%d",
2150 netdev->name, "tx", ti++);
Joe Perchese8e9f692010-09-07 21:34:53 +00002151 } else
Robert Olssoncb13fc22008-11-25 16:43:52 -08002152 sprintf(adapter->name[vector], "%s-%s-%d",
2153 netdev->name, "TxRx", vector);
2154
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002155 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002156 handler, 0, adapter->name[vector],
2157 adapter->q_vector[vector]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002158 if (err) {
Emil Tantilov396e7992010-07-01 20:05:12 +00002159 e_err(probe, "request_irq failed for MSIX interrupt "
Emil Tantilov849c4542010-06-03 16:53:41 +00002160 "Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002161 goto free_queue_irqs;
2162 }
2163 }
2164
2165 sprintf(adapter->name[vector], "%s:lsc", netdev->name);
2166 err = request_irq(adapter->msix_entries[vector].vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002167 ixgbe_msix_lsc, 0, adapter->name[vector], netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002168 if (err) {
Emil Tantilov396e7992010-07-01 20:05:12 +00002169 e_err(probe, "request_irq for msix_lsc failed: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002170 goto free_queue_irqs;
2171 }
2172
2173 return 0;
2174
2175free_queue_irqs:
2176 for (i = vector - 1; i >= 0; i--)
2177 free_irq(adapter->msix_entries[--vector].vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002178 adapter->q_vector[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002179 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2180 pci_disable_msix(adapter->pdev);
2181 kfree(adapter->msix_entries);
2182 adapter->msix_entries = NULL;
2183out:
2184 return err;
2185}
2186
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002187static void ixgbe_set_itr(struct ixgbe_adapter *adapter)
2188{
Alexander Duyck7a921c92009-05-06 10:43:28 +00002189 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002190 u8 current_itr;
2191 u32 new_itr = q_vector->eitr;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002192 struct ixgbe_ring *rx_ring = adapter->rx_ring[0];
2193 struct ixgbe_ring *tx_ring = adapter->tx_ring[0];
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002194
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002195 q_vector->tx_itr = ixgbe_update_itr(adapter, new_itr,
Joe Perchese8e9f692010-09-07 21:34:53 +00002196 q_vector->tx_itr,
2197 tx_ring->total_packets,
2198 tx_ring->total_bytes);
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002199 q_vector->rx_itr = ixgbe_update_itr(adapter, new_itr,
Joe Perchese8e9f692010-09-07 21:34:53 +00002200 q_vector->rx_itr,
2201 rx_ring->total_packets,
2202 rx_ring->total_bytes);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002203
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07002204 current_itr = max(q_vector->rx_itr, q_vector->tx_itr);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002205
2206 switch (current_itr) {
2207 /* counts and packets in update_itr are dependent on these numbers */
2208 case lowest_latency:
2209 new_itr = 100000;
2210 break;
2211 case low_latency:
2212 new_itr = 20000; /* aka hwitr = ~200 */
2213 break;
2214 case bulk_latency:
2215 new_itr = 8000;
2216 break;
2217 default:
2218 break;
2219 }
2220
2221 if (new_itr != q_vector->eitr) {
Alexander Duyckfe49f042009-06-04 16:00:09 +00002222 /* do an exponential smoothing */
2223 new_itr = ((q_vector->eitr * 90)/100) + ((new_itr * 10)/100);
Jesse Brandeburg509ee932009-03-13 22:13:28 +00002224
2225 /* save the algorithm value here, not the smoothed one */
2226 q_vector->eitr = new_itr;
Alexander Duyckfe49f042009-06-04 16:00:09 +00002227
2228 ixgbe_write_eitr(q_vector);
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002229 }
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08002230}
2231
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002232/**
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002233 * ixgbe_irq_enable - Enable default interrupt generation settings
2234 * @adapter: board private structure
2235 **/
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002236static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2237 bool flush)
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002238{
2239 u32 mask;
Nelson, Shannon835462f2009-04-27 22:42:54 +00002240
2241 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002242 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2243 mask |= IXGBE_EIMS_GPI_SDP0;
David S. Miller6ab33d52008-11-20 16:44:00 -08002244 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2245 mask |= IXGBE_EIMS_GPI_SDP1;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002246 if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
Jesse Brandeburg2a41ff82009-03-13 22:14:30 +00002247 mask |= IXGBE_EIMS_ECC;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002248 mask |= IXGBE_EIMS_GPI_SDP1;
2249 mask |= IXGBE_EIMS_GPI_SDP2;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002250 if (adapter->num_vfs)
2251 mask |= IXGBE_EIMS_MAILBOX;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002252 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00002253 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
2254 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
2255 mask |= IXGBE_EIMS_FLOW_DIR;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002256
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002257 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002258 if (queues)
2259 ixgbe_irq_enable_queues(adapter, ~0);
2260 if (flush)
2261 IXGBE_WRITE_FLUSH(&adapter->hw);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002262
2263 if (adapter->num_vfs > 32) {
2264 u32 eitrsel = (1 << (adapter->num_vfs - 32)) - 1;
2265 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2266 }
Alexey Dobriyan79aefa42008-11-19 14:17:02 -08002267}
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002268
2269/**
2270 * ixgbe_intr - legacy mode Interrupt Handler
Auke Kok9a799d72007-09-15 14:07:45 -07002271 * @irq: interrupt number
2272 * @data: pointer to a network interface device structure
Auke Kok9a799d72007-09-15 14:07:45 -07002273 **/
2274static irqreturn_t ixgbe_intr(int irq, void *data)
2275{
2276 struct net_device *netdev = data;
2277 struct ixgbe_adapter *adapter = netdev_priv(netdev);
2278 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck7a921c92009-05-06 10:43:28 +00002279 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
Auke Kok9a799d72007-09-15 14:07:45 -07002280 u32 eicr;
2281
Don Skidmore54037502009-02-21 15:42:56 -08002282 /*
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002283 * Workaround for silicon errata on 82598. Mask the interrupts
Don Skidmore54037502009-02-21 15:42:56 -08002284 * before the read of EICR.
2285 */
2286 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2287
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002288 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2289 * therefore no explict interrupt disable is necessary */
2290 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002291 if (!eicr) {
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002292 /*
2293 * shared interrupt alert!
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002294 * make sure interrupts are enabled because the read will
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002295 * have disabled interrupts due to EIAM
2296 * finish the workaround of silicon errata on 82598. Unmask
2297 * the interrupt that we masked before the EICR read.
2298 */
2299 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2300 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07002301 return IRQ_NONE; /* Not our interrupt */
Jesse Brandeburgf47cf662008-09-11 19:56:14 -07002302 }
Auke Kok9a799d72007-09-15 14:07:45 -07002303
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07002304 if (eicr & IXGBE_EICR_LSC)
2305 ixgbe_check_lsc(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002306
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002307 if (hw->mac.type == ixgbe_mac_82599EB)
2308 ixgbe_check_sfp_event(adapter, eicr);
2309
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002310 ixgbe_check_fan_failure(adapter, eicr);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07002311 if ((adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2312 ((eicr & IXGBE_EICR_GPI_SDP0) || (eicr & IXGBE_EICR_LSC)))
2313 schedule_work(&adapter->check_overtemp_task);
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07002314
Alexander Duyck7a921c92009-05-06 10:43:28 +00002315 if (napi_schedule_prep(&(q_vector->napi))) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002316 adapter->tx_ring[0]->total_packets = 0;
2317 adapter->tx_ring[0]->total_bytes = 0;
2318 adapter->rx_ring[0]->total_packets = 0;
2319 adapter->rx_ring[0]->total_bytes = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002320 /* would disable interrupts here but EIAM disabled it */
Alexander Duyck7a921c92009-05-06 10:43:28 +00002321 __napi_schedule(&(q_vector->napi));
Auke Kok9a799d72007-09-15 14:07:45 -07002322 }
2323
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00002324 /*
2325 * re-enable link(maybe) and non-queue interrupts, no flush.
2326 * ixgbe_poll will re-enable the queue interrupts
2327 */
2328
2329 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2330 ixgbe_irq_enable(adapter, false, false);
2331
Auke Kok9a799d72007-09-15 14:07:45 -07002332 return IRQ_HANDLED;
2333}
2334
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002335static inline void ixgbe_reset_q_vectors(struct ixgbe_adapter *adapter)
2336{
2337 int i, q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
2338
2339 for (i = 0; i < q_vectors; i++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00002340 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002341 bitmap_zero(q_vector->rxr_idx, MAX_RX_QUEUES);
2342 bitmap_zero(q_vector->txr_idx, MAX_TX_QUEUES);
2343 q_vector->rxr_count = 0;
2344 q_vector->txr_count = 0;
2345 }
2346}
2347
Auke Kok9a799d72007-09-15 14:07:45 -07002348/**
2349 * ixgbe_request_irq - initialize interrupts
2350 * @adapter: board private structure
2351 *
2352 * Attempts to configure interrupts using the best available
2353 * capabilities of the hardware and kernel.
2354 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002355static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07002356{
2357 struct net_device *netdev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002358 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07002359
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002360 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2361 err = ixgbe_request_msix_irqs(adapter);
2362 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
Joe Perchesa0607fd2009-11-18 23:29:17 -08002363 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
Joe Perchese8e9f692010-09-07 21:34:53 +00002364 netdev->name, netdev);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002365 } else {
Joe Perchesa0607fd2009-11-18 23:29:17 -08002366 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
Joe Perchese8e9f692010-09-07 21:34:53 +00002367 netdev->name, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002368 }
2369
Auke Kok9a799d72007-09-15 14:07:45 -07002370 if (err)
Emil Tantilov396e7992010-07-01 20:05:12 +00002371 e_err(probe, "request_irq failed, Error %d\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07002372
Auke Kok9a799d72007-09-15 14:07:45 -07002373 return err;
2374}
2375
2376static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
2377{
2378 struct net_device *netdev = adapter->netdev;
2379
2380 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002381 int i, q_vectors;
Auke Kok9a799d72007-09-15 14:07:45 -07002382
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002383 q_vectors = adapter->num_msix_vectors;
2384
2385 i = q_vectors - 1;
Auke Kok9a799d72007-09-15 14:07:45 -07002386 free_irq(adapter->msix_entries[i].vector, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002387
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002388 i--;
2389 for (; i >= 0; i--) {
2390 free_irq(adapter->msix_entries[i].vector,
Joe Perchese8e9f692010-09-07 21:34:53 +00002391 adapter->q_vector[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002392 }
2393
2394 ixgbe_reset_q_vectors(adapter);
2395 } else {
2396 free_irq(adapter->pdev->irq, netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07002397 }
2398}
2399
2400/**
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002401 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
2402 * @adapter: board private structure
2403 **/
2404static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
2405{
Nelson, Shannon835462f2009-04-27 22:42:54 +00002406 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2407 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
2408 } else {
2409 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
2410 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002411 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002412 if (adapter->num_vfs > 32)
2413 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002414 }
2415 IXGBE_WRITE_FLUSH(&adapter->hw);
2416 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
2417 int i;
2418 for (i = 0; i < adapter->num_msix_vectors; i++)
2419 synchronize_irq(adapter->msix_entries[i].vector);
2420 } else {
2421 synchronize_irq(adapter->pdev->irq);
2422 }
2423}
2424
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00002425/**
Auke Kok9a799d72007-09-15 14:07:45 -07002426 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
2427 *
2428 **/
2429static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
2430{
Auke Kok9a799d72007-09-15 14:07:45 -07002431 struct ixgbe_hw *hw = &adapter->hw;
2432
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002433 IXGBE_WRITE_REG(hw, IXGBE_EITR(0),
Joe Perchese8e9f692010-09-07 21:34:53 +00002434 EITR_INTS_PER_SEC_TO_REG(adapter->rx_eitr_param));
Auke Kok9a799d72007-09-15 14:07:45 -07002435
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002436 ixgbe_set_ivar(adapter, 0, 0, 0);
2437 ixgbe_set_ivar(adapter, 1, 0, 0);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08002438
2439 map_vector_to_rxq(adapter, 0, 0);
2440 map_vector_to_txq(adapter, 0, 0);
2441
Emil Tantilov396e7992010-07-01 20:05:12 +00002442 e_info(hw, "Legacy interrupt IVAR setup done\n");
Auke Kok9a799d72007-09-15 14:07:45 -07002443}
2444
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002445/**
2446 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
2447 * @adapter: board private structure
2448 * @ring: structure containing ring specific data
2449 *
2450 * Configure the Tx descriptor ring after a reset.
2451 **/
Alexander Duyck84418e32010-08-19 13:40:54 +00002452void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
2453 struct ixgbe_ring *ring)
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002454{
2455 struct ixgbe_hw *hw = &adapter->hw;
2456 u64 tdba = ring->dma;
Alexander Duyck2f1860b2010-08-19 13:39:43 +00002457 int wait_loop = 10;
2458 u32 txdctl;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002459 u16 reg_idx = ring->reg_idx;
2460
Alexander Duyck2f1860b2010-08-19 13:39:43 +00002461 /* disable queue to avoid issues while updating state */
2462 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2463 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx),
2464 txdctl & ~IXGBE_TXDCTL_ENABLE);
2465 IXGBE_WRITE_FLUSH(hw);
2466
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002467 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
Joe Perchese8e9f692010-09-07 21:34:53 +00002468 (tdba & DMA_BIT_MASK(32)));
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002469 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
2470 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
2471 ring->count * sizeof(union ixgbe_adv_tx_desc));
2472 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
2473 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
2474 ring->head = IXGBE_TDH(reg_idx);
2475 ring->tail = IXGBE_TDT(reg_idx);
2476
Alexander Duyck2f1860b2010-08-19 13:39:43 +00002477 /* configure fetching thresholds */
2478 if (adapter->rx_itr_setting == 0) {
2479 /* cannot set wthresh when itr==0 */
2480 txdctl &= ~0x007F0000;
2481 } else {
2482 /* enable WTHRESH=8 descriptors, to encourage burst writeback */
2483 txdctl |= (8 << 16);
2484 }
2485 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
2486 /* PThresh workaround for Tx hang with DFP enabled. */
2487 txdctl |= 32;
2488 }
2489
2490 /* reinitialize flowdirector state */
2491 set_bit(__IXGBE_FDIR_INIT_DONE, &ring->reinit_state);
2492
2493 /* enable queue */
2494 txdctl |= IXGBE_TXDCTL_ENABLE;
2495 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
2496
2497 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2498 if (hw->mac.type == ixgbe_mac_82598EB &&
2499 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2500 return;
2501
2502 /* poll to verify queue is enabled */
2503 do {
2504 msleep(1);
2505 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
2506 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
2507 if (!wait_loop)
2508 e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002509}
2510
Alexander Duyck120ff942010-08-19 13:34:50 +00002511static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
2512{
2513 struct ixgbe_hw *hw = &adapter->hw;
2514 u32 rttdcs;
2515 u32 mask;
2516
2517 if (hw->mac.type == ixgbe_mac_82598EB)
2518 return;
2519
2520 /* disable the arbiter while setting MTQC */
2521 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
2522 rttdcs |= IXGBE_RTTDCS_ARBDIS;
2523 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2524
2525 /* set transmit pool layout */
2526 mask = (IXGBE_FLAG_SRIOV_ENABLED | IXGBE_FLAG_DCB_ENABLED);
2527 switch (adapter->flags & mask) {
2528
2529 case (IXGBE_FLAG_SRIOV_ENABLED):
2530 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2531 (IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF));
2532 break;
2533
2534 case (IXGBE_FLAG_DCB_ENABLED):
2535 /* We enable 8 traffic classes, DCB only */
2536 IXGBE_WRITE_REG(hw, IXGBE_MTQC,
2537 (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ));
2538 break;
2539
2540 default:
2541 IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB);
2542 break;
2543 }
2544
2545 /* re-enable the arbiter */
2546 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
2547 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
2548}
2549
Auke Kok9a799d72007-09-15 14:07:45 -07002550/**
Jesse Brandeburg3a581072008-08-26 04:27:08 -07002551 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
Auke Kok9a799d72007-09-15 14:07:45 -07002552 * @adapter: board private structure
2553 *
2554 * Configure the Tx unit of the MAC after a reset.
2555 **/
2556static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
2557{
Alexander Duyck2f1860b2010-08-19 13:39:43 +00002558 struct ixgbe_hw *hw = &adapter->hw;
2559 u32 dmatxctl;
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002560 u32 i;
Auke Kok9a799d72007-09-15 14:07:45 -07002561
Alexander Duyck2f1860b2010-08-19 13:39:43 +00002562 ixgbe_setup_mtqc(adapter);
2563
2564 if (hw->mac.type != ixgbe_mac_82598EB) {
2565 /* DMATXCTL.EN must be before Tx queues are enabled */
2566 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
2567 dmatxctl |= IXGBE_DMATXCTL_TE;
2568 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
2569 }
2570
Auke Kok9a799d72007-09-15 14:07:45 -07002571 /* Setup the HW Tx Head and Tail descriptor pointers */
Alexander Duyck43e69bf2010-08-19 13:35:12 +00002572 for (i = 0; i < adapter->num_tx_queues; i++)
2573 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07002574}
2575
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002576#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
Auke Kok9a799d72007-09-15 14:07:45 -07002577
Yi Zoua6616b42009-08-06 13:05:23 +00002578static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00002579 struct ixgbe_ring *rx_ring)
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002580{
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002581 u32 srrctl;
Yi Zoua6616b42009-08-06 13:05:23 +00002582 int index;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002583 struct ixgbe_ring_feature *feature = adapter->ring_feature;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002584
Yi Zoua6616b42009-08-06 13:05:23 +00002585 index = rx_ring->reg_idx;
2586 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
2587 unsigned long mask;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002588 mask = (unsigned long) feature[RING_F_RSS].mask;
Alexander Duyck3be1adf2008-08-30 00:29:10 -07002589 index = index & mask;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002590 }
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002591 srrctl = IXGBE_READ_REG(&adapter->hw, IXGBE_SRRCTL(index));
2592
2593 srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
2594 srrctl &= ~IXGBE_SRRCTL_BSIZEPKT_MASK;
Alexander Duyck9e10e042010-08-19 13:40:06 +00002595 if (adapter->num_vfs)
2596 srrctl |= IXGBE_SRRCTL_DROP_EN;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002597
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002598 srrctl |= (IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
2599 IXGBE_SRRCTL_BSIZEHDR_MASK;
2600
Yi Zou6e455b892009-08-06 13:05:44 +00002601 if (rx_ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002602#if (PAGE_SIZE / 2) > IXGBE_MAX_RXBUFFER
2603 srrctl |= IXGBE_MAX_RXBUFFER >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2604#else
2605 srrctl |= (PAGE_SIZE / 2) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
2606#endif
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002607 srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002608 } else {
Alexander Duyckafafd5b2009-05-07 10:38:56 +00002609 srrctl |= ALIGN(rx_ring->rx_buf_len, 1024) >>
2610 IXGBE_SRRCTL_BSIZEPKT_SHIFT;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002611 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002612 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00002613
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002614 IXGBE_WRITE_REG(&adapter->hw, IXGBE_SRRCTL(index), srrctl);
2615}
2616
Alexander Duyck05abb122010-08-19 13:35:41 +00002617static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002618{
Alexander Duyck05abb122010-08-19 13:35:41 +00002619 struct ixgbe_hw *hw = &adapter->hw;
2620 static const u32 seed[10] = { 0xE291D73D, 0x1805EC6C, 0x2A94B30D,
Joe Perchese8e9f692010-09-07 21:34:53 +00002621 0xA54F2BEC, 0xEA49AF7C, 0xE214AD3D, 0xB855AABE,
2622 0x6A3E67EA, 0x14364D17, 0x3BED200D};
Alexander Duyck05abb122010-08-19 13:35:41 +00002623 u32 mrqc = 0, reta = 0;
2624 u32 rxcsum;
2625 int i, j;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002626 int mask;
2627
Alexander Duyck05abb122010-08-19 13:35:41 +00002628 /* Fill out hash function seeds */
2629 for (i = 0; i < 10; i++)
2630 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), seed[i]);
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002631
Alexander Duyck05abb122010-08-19 13:35:41 +00002632 /* Fill out redirection table */
2633 for (i = 0, j = 0; i < 128; i++, j++) {
2634 if (j == adapter->ring_feature[RING_F_RSS].indices)
2635 j = 0;
2636 /* reta = 4-byte sliding window of
2637 * 0x00..(indices-1)(indices-1)00..etc. */
2638 reta = (reta << 8) | (j * 0x11);
2639 if ((i & 3) == 3)
2640 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
2641 }
2642
2643 /* Disable indicating checksum in descriptor, enables RSS hash */
2644 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
2645 rxcsum |= IXGBE_RXCSUM_PCSD;
2646 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
2647
2648 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
2649 mask = adapter->flags & IXGBE_FLAG_RSS_ENABLED;
2650 else
2651 mask = adapter->flags & (IXGBE_FLAG_RSS_ENABLED
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002652#ifdef CONFIG_IXGBE_DCB
Alexander Duyck05abb122010-08-19 13:35:41 +00002653 | IXGBE_FLAG_DCB_ENABLED
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002654#endif
Alexander Duyck05abb122010-08-19 13:35:41 +00002655 | IXGBE_FLAG_SRIOV_ENABLED
2656 );
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002657
2658 switch (mask) {
2659 case (IXGBE_FLAG_RSS_ENABLED):
2660 mrqc = IXGBE_MRQC_RSSEN;
2661 break;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002662 case (IXGBE_FLAG_SRIOV_ENABLED):
2663 mrqc = IXGBE_MRQC_VMDQEN;
2664 break;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002665#ifdef CONFIG_IXGBE_DCB
2666 case (IXGBE_FLAG_DCB_ENABLED):
2667 mrqc = IXGBE_MRQC_RT8TCEN;
2668 break;
2669#endif /* CONFIG_IXGBE_DCB */
2670 default:
2671 break;
2672 }
2673
Alexander Duyck05abb122010-08-19 13:35:41 +00002674 /* Perform hash on these packet types */
2675 mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4
2676 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP
2677 | IXGBE_MRQC_RSS_FIELD_IPV6
2678 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
2679
2680 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002681}
2682
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07002683/**
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002684 * ixgbe_configure_rscctl - enable RSC for the indicated ring
2685 * @adapter: address of board private structure
2686 * @index: index of ring to set
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002687 **/
Alexander Duyck73670962010-08-19 13:38:34 +00002688static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
2689 struct ixgbe_ring *ring)
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002690{
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002691 struct ixgbe_hw *hw = &adapter->hw;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002692 u32 rscctrl;
Mallikarjuna R Chilakalaedd2ea52009-11-23 10:45:11 -08002693 int rx_buf_len;
Alexander Duyck73670962010-08-19 13:38:34 +00002694 u16 reg_idx = ring->reg_idx;
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002695
Alexander Duyck73670962010-08-19 13:38:34 +00002696 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
2697 return;
2698
2699 rx_buf_len = ring->rx_buf_len;
2700 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002701 rscctrl |= IXGBE_RSCCTL_RSCEN;
2702 /*
2703 * we must limit the number of descriptors so that the
2704 * total size of max desc * buf_len is not greater
2705 * than 65535
2706 */
Alexander Duyck73670962010-08-19 13:38:34 +00002707 if (ring->flags & IXGBE_RING_RX_PS_ENABLED) {
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002708#if (MAX_SKB_FRAGS > 16)
2709 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2710#elif (MAX_SKB_FRAGS > 8)
2711 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2712#elif (MAX_SKB_FRAGS > 4)
2713 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2714#else
2715 rscctrl |= IXGBE_RSCCTL_MAXDESC_1;
2716#endif
2717 } else {
2718 if (rx_buf_len < IXGBE_RXBUFFER_4096)
2719 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
2720 else if (rx_buf_len < IXGBE_RXBUFFER_8192)
2721 rscctrl |= IXGBE_RSCCTL_MAXDESC_8;
2722 else
2723 rscctrl |= IXGBE_RSCCTL_MAXDESC_4;
2724 }
Alexander Duyck73670962010-08-19 13:38:34 +00002725 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
Nelson, Shannonbb5a9ad2009-09-18 09:46:27 +00002726}
2727
Alexander Duyck9e10e042010-08-19 13:40:06 +00002728/**
2729 * ixgbe_set_uta - Set unicast filter table address
2730 * @adapter: board private structure
2731 *
2732 * The unicast table address is a register array of 32-bit registers.
2733 * The table is meant to be used in a way similar to how the MTA is used
2734 * however due to certain limitations in the hardware it is necessary to
2735 * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous
2736 * enable bit to allow vlan tag stripping when promiscuous mode is enabled
2737 **/
2738static void ixgbe_set_uta(struct ixgbe_adapter *adapter)
2739{
2740 struct ixgbe_hw *hw = &adapter->hw;
2741 int i;
2742
2743 /* The UTA table only exists on 82599 hardware and newer */
2744 if (hw->mac.type < ixgbe_mac_82599EB)
2745 return;
2746
2747 /* we only need to do this if VMDq is enabled */
2748 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2749 return;
2750
2751 for (i = 0; i < 128; i++)
2752 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), ~0);
2753}
2754
2755#define IXGBE_MAX_RX_DESC_POLL 10
2756static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
2757 struct ixgbe_ring *ring)
2758{
2759 struct ixgbe_hw *hw = &adapter->hw;
2760 int reg_idx = ring->reg_idx;
2761 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
2762 u32 rxdctl;
2763
2764 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
2765 if (hw->mac.type == ixgbe_mac_82598EB &&
2766 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
2767 return;
2768
2769 do {
2770 msleep(1);
2771 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2772 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
2773
2774 if (!wait_loop) {
2775 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
2776 "the polling period\n", reg_idx);
2777 }
2778}
2779
Alexander Duyck84418e32010-08-19 13:40:54 +00002780void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
2781 struct ixgbe_ring *ring)
Alexander Duyckacd37172010-08-19 13:36:05 +00002782{
2783 struct ixgbe_hw *hw = &adapter->hw;
2784 u64 rdba = ring->dma;
Alexander Duyck9e10e042010-08-19 13:40:06 +00002785 u32 rxdctl;
Alexander Duyckacd37172010-08-19 13:36:05 +00002786 u16 reg_idx = ring->reg_idx;
2787
Alexander Duyck9e10e042010-08-19 13:40:06 +00002788 /* disable queue to avoid issues while updating state */
2789 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
2790 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx),
2791 rxdctl & ~IXGBE_RXDCTL_ENABLE);
2792 IXGBE_WRITE_FLUSH(hw);
2793
Alexander Duyckacd37172010-08-19 13:36:05 +00002794 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
2795 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
2796 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
2797 ring->count * sizeof(union ixgbe_adv_rx_desc));
2798 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
2799 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
2800 ring->head = IXGBE_RDH(reg_idx);
2801 ring->tail = IXGBE_RDT(reg_idx);
Alexander Duyck9e10e042010-08-19 13:40:06 +00002802
2803 ixgbe_configure_srrctl(adapter, ring);
2804 ixgbe_configure_rscctl(adapter, ring);
2805
2806 if (hw->mac.type == ixgbe_mac_82598EB) {
2807 /*
2808 * enable cache line friendly hardware writes:
2809 * PTHRESH=32 descriptors (half the internal cache),
2810 * this also removes ugly rx_no_buffer_count increment
2811 * HTHRESH=4 descriptors (to minimize latency on fetch)
2812 * WTHRESH=8 burst writeback up to two cache lines
2813 */
2814 rxdctl &= ~0x3FFFFF;
2815 rxdctl |= 0x080420;
2816 }
2817
2818 /* enable receive descriptor ring */
2819 rxdctl |= IXGBE_RXDCTL_ENABLE;
2820 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
2821
2822 ixgbe_rx_desc_queue_enable(adapter, ring);
2823 ixgbe_alloc_rx_buffers(adapter, ring, IXGBE_DESC_UNUSED(ring));
Alexander Duyckacd37172010-08-19 13:36:05 +00002824}
2825
Alexander Duyck48654522010-08-19 13:36:27 +00002826static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
2827{
2828 struct ixgbe_hw *hw = &adapter->hw;
2829 int p;
2830
2831 /* PSRTYPE must be initialized in non 82598 adapters */
2832 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00002833 IXGBE_PSRTYPE_UDPHDR |
2834 IXGBE_PSRTYPE_IPV4HDR |
Alexander Duyck48654522010-08-19 13:36:27 +00002835 IXGBE_PSRTYPE_L2HDR |
Joe Perchese8e9f692010-09-07 21:34:53 +00002836 IXGBE_PSRTYPE_IPV6HDR;
Alexander Duyck48654522010-08-19 13:36:27 +00002837
2838 if (hw->mac.type == ixgbe_mac_82598EB)
2839 return;
2840
2841 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED)
2842 psrtype |= (adapter->num_rx_queues_per_pool << 29);
2843
2844 for (p = 0; p < adapter->num_rx_pools; p++)
2845 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(adapter->num_vfs + p),
2846 psrtype);
2847}
2848
Alexander Duyckf5b4a522010-08-19 13:38:57 +00002849static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
2850{
2851 struct ixgbe_hw *hw = &adapter->hw;
2852 u32 gcr_ext;
2853 u32 vt_reg_bits;
2854 u32 reg_offset, vf_shift;
2855 u32 vmdctl;
2856
2857 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
2858 return;
2859
2860 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2861 vt_reg_bits = IXGBE_VMD_CTL_VMDQ_EN | IXGBE_VT_CTL_REPLEN;
2862 vt_reg_bits |= (adapter->num_vfs << IXGBE_VT_CTL_POOL_SHIFT);
2863 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl | vt_reg_bits);
2864
2865 vf_shift = adapter->num_vfs % 32;
2866 reg_offset = (adapter->num_vfs > 32) ? 1 : 0;
2867
2868 /* Enable only the PF's pool for Tx/Rx */
2869 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), (1 << vf_shift));
2870 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), 0);
2871 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), (1 << vf_shift));
2872 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), 0);
2873 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2874
2875 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
2876 hw->mac.ops.set_vmdq(hw, 0, adapter->num_vfs);
2877
2878 /*
2879 * Set up VF register offsets for selected VT Mode,
2880 * i.e. 32 or 64 VFs for SR-IOV
2881 */
2882 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
2883 gcr_ext |= IXGBE_GCR_EXT_MSIX_EN;
2884 gcr_ext |= IXGBE_GCR_EXT_VT_MODE_64;
2885 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
2886
2887 /* enable Tx loopback for VF/PF communication */
2888 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
2889}
2890
Alexander Duyck477de6e2010-08-19 13:38:11 +00002891static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07002892{
Auke Kok9a799d72007-09-15 14:07:45 -07002893 struct ixgbe_hw *hw = &adapter->hw;
2894 struct net_device *netdev = adapter->netdev;
2895 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002896 int rx_buf_len;
Alexander Duyck477de6e2010-08-19 13:38:11 +00002897 struct ixgbe_ring *rx_ring;
2898 int i;
2899 u32 mhadd, hlreg0;
Alexander Duyck48654522010-08-19 13:36:27 +00002900
Auke Kok9a799d72007-09-15 14:07:45 -07002901 /* Decide whether to use packet split mode or not */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00002902 /* Do not use packet split if we're in SR-IOV Mode */
2903 if (!adapter->num_vfs)
2904 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
Auke Kok9a799d72007-09-15 14:07:45 -07002905
2906 /* Set the RX buffer length according to the mode */
2907 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002908 rx_buf_len = IXGBE_RX_HDR_SIZE;
Auke Kok9a799d72007-09-15 14:07:45 -07002909 } else {
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00002910 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) &&
Alexander Duyckf8212f92009-04-27 22:42:37 +00002911 (netdev->mtu <= ETH_DATA_LEN))
Jesse Brandeburg7c6e0a42008-08-26 04:27:16 -07002912 rx_buf_len = MAXIMUM_ETHERNET_VLAN_SIZE;
Auke Kok9a799d72007-09-15 14:07:45 -07002913 else
Alexander Duyck477de6e2010-08-19 13:38:11 +00002914 rx_buf_len = ALIGN(max_frame + VLAN_HLEN, 1024);
2915 }
2916
2917#ifdef IXGBE_FCOE
2918 /* adjust max frame to be able to do baby jumbo for FCoE */
2919 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
2920 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
2921 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
2922
2923#endif /* IXGBE_FCOE */
2924 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
2925 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
2926 mhadd &= ~IXGBE_MHADD_MFS_MASK;
2927 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
2928
2929 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
Auke Kok9a799d72007-09-15 14:07:45 -07002930 }
2931
Auke Kok9a799d72007-09-15 14:07:45 -07002932 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
Alexander Duyck477de6e2010-08-19 13:38:11 +00002933 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
2934 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
Auke Kok9a799d72007-09-15 14:07:45 -07002935 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
2936
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00002937 /*
2938 * Setup the HW Rx Head and Tail Descriptor Pointers and
2939 * the Base and Length of the Rx Descriptor Ring
2940 */
Auke Kok9a799d72007-09-15 14:07:45 -07002941 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00002942 rx_ring = adapter->rx_ring[i];
Yi Zoua6616b42009-08-06 13:05:23 +00002943 rx_ring->rx_buf_len = rx_buf_len;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002944
Yi Zou6e455b892009-08-06 13:05:44 +00002945 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED)
2946 rx_ring->flags |= IXGBE_RING_RX_PS_ENABLED;
Peter P Waskiewicz Jr1b3ff022009-09-14 07:47:27 +00002947 else
2948 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
Jesse Brandeburgcc41ac72008-08-26 04:27:27 -07002949
Yi Zou63f39bd2009-05-17 12:34:35 +00002950#ifdef IXGBE_FCOE
Joe Perchese8e9f692010-09-07 21:34:53 +00002951 if (netdev->features & NETIF_F_FCOE_MTU) {
Yi Zou63f39bd2009-05-17 12:34:35 +00002952 struct ixgbe_ring_feature *f;
2953 f = &adapter->ring_feature[RING_F_FCOE];
Yi Zou6e455b892009-08-06 13:05:44 +00002954 if ((i >= f->mask) && (i < f->mask + f->indices)) {
2955 rx_ring->flags &= ~IXGBE_RING_RX_PS_ENABLED;
2956 if (rx_buf_len < IXGBE_FCOE_JUMBO_FRAME_SIZE)
2957 rx_ring->rx_buf_len =
Joe Perchese8e9f692010-09-07 21:34:53 +00002958 IXGBE_FCOE_JUMBO_FRAME_SIZE;
Yi Zou6e455b892009-08-06 13:05:44 +00002959 }
Yi Zou63f39bd2009-05-17 12:34:35 +00002960 }
Yi Zou63f39bd2009-05-17 12:34:35 +00002961#endif /* IXGBE_FCOE */
Alexander Duyck477de6e2010-08-19 13:38:11 +00002962 }
2963
2964}
2965
Alexander Duyck73670962010-08-19 13:38:34 +00002966static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
2967{
2968 struct ixgbe_hw *hw = &adapter->hw;
2969 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
2970
2971 switch (hw->mac.type) {
2972 case ixgbe_mac_82598EB:
2973 /*
2974 * For VMDq support of different descriptor types or
2975 * buffer sizes through the use of multiple SRRCTL
2976 * registers, RDRXCTL.MVMEN must be set to 1
2977 *
2978 * also, the manual doesn't mention it clearly but DCA hints
2979 * will only use queue 0's tags unless this bit is set. Side
2980 * effects of setting this bit are only that SRRCTL must be
2981 * fully programmed [0..15]
2982 */
2983 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
2984 break;
2985 case ixgbe_mac_82599EB:
2986 /* Disable RSC for ACK packets */
2987 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
2988 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
2989 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
2990 /* hardware requires some bits to be set by default */
2991 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
2992 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
2993 break;
2994 default:
2995 /* We should do nothing since we don't know this hardware */
2996 return;
2997 }
2998
2999 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3000}
3001
Alexander Duyck477de6e2010-08-19 13:38:11 +00003002/**
3003 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
3004 * @adapter: board private structure
3005 *
3006 * Configure the Rx unit of the MAC after a reset.
3007 **/
3008static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3009{
3010 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck477de6e2010-08-19 13:38:11 +00003011 int i;
3012 u32 rxctrl;
Alexander Duyck477de6e2010-08-19 13:38:11 +00003013
3014 /* disable receives while setting up the descriptors */
3015 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3016 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
3017
3018 ixgbe_setup_psrtype(adapter);
Alexander Duyck73670962010-08-19 13:38:34 +00003019 ixgbe_setup_rdrxctl(adapter);
Alexander Duyck477de6e2010-08-19 13:38:11 +00003020
Alexander Duyck9e10e042010-08-19 13:40:06 +00003021 /* Program registers for the distribution of queues */
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003022 ixgbe_setup_mrqc(adapter);
Alexander Duyckf5b4a522010-08-19 13:38:57 +00003023
Alexander Duyck9e10e042010-08-19 13:40:06 +00003024 ixgbe_set_uta(adapter);
3025
Alexander Duyck477de6e2010-08-19 13:38:11 +00003026 /* set_rx_buffer_len must be called before ring initialization */
3027 ixgbe_set_rx_buffer_len(adapter);
3028
3029 /*
3030 * Setup the HW Rx Head and Tail Descriptor Pointers and
3031 * the Base and Length of the Rx Descriptor Ring
3032 */
Alexander Duyck9e10e042010-08-19 13:40:06 +00003033 for (i = 0; i < adapter->num_rx_queues; i++)
3034 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07003035
Alexander Duyck9e10e042010-08-19 13:40:06 +00003036 /* disable drop enable for 82598 parts */
3037 if (hw->mac.type == ixgbe_mac_82598EB)
3038 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3039
3040 /* enable all receives */
3041 rxctrl |= IXGBE_RXCTRL_RXEN;
3042 hw->mac.ops.enable_rx_dma(hw, rxctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07003043}
3044
Auke Kok9a799d72007-09-15 14:07:45 -07003045static void ixgbe_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
3046{
3047 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003048 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose1ada1b12010-01-22 22:45:43 +00003049 int pool_ndx = adapter->num_vfs;
Auke Kok9a799d72007-09-15 14:07:45 -07003050
3051 /* add VID to filter table */
Greg Rose1ada1b12010-01-22 22:45:43 +00003052 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, true);
Auke Kok9a799d72007-09-15 14:07:45 -07003053}
3054
3055static void ixgbe_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
3056{
3057 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003058 struct ixgbe_hw *hw = &adapter->hw;
Greg Rose1ada1b12010-01-22 22:45:43 +00003059 int pool_ndx = adapter->num_vfs;
Auke Kok9a799d72007-09-15 14:07:45 -07003060
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003061 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3062 ixgbe_irq_disable(adapter);
3063
Auke Kok9a799d72007-09-15 14:07:45 -07003064 vlan_group_set_device(adapter->vlgrp, vid, NULL);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003065
3066 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003067 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07003068
3069 /* remove VID from filter table */
Greg Rose1ada1b12010-01-22 22:45:43 +00003070 hw->mac.ops.set_vfta(&adapter->hw, vid, pool_ndx, false);
Auke Kok9a799d72007-09-15 14:07:45 -07003071}
3072
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003073/**
3074 * ixgbe_vlan_filter_disable - helper to disable hw vlan filtering
3075 * @adapter: driver data
3076 */
3077static void ixgbe_vlan_filter_disable(struct ixgbe_adapter *adapter)
3078{
3079 struct ixgbe_hw *hw = &adapter->hw;
3080 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3081 int i, j;
3082
3083 switch (hw->mac.type) {
3084 case ixgbe_mac_82598EB:
Yi Zou38e0bd92010-05-18 16:00:08 +00003085 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
3086#ifdef CONFIG_IXGBE_DCB
3087 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3088 vlnctrl &= ~IXGBE_VLNCTRL_VME;
3089#endif
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003090 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3091 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3092 break;
3093 case ixgbe_mac_82599EB:
3094 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
3095 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3096 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
Yi Zou38e0bd92010-05-18 16:00:08 +00003097#ifdef CONFIG_IXGBE_DCB
3098 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
3099 break;
3100#endif
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003101 for (i = 0; i < adapter->num_rx_queues; i++) {
3102 j = adapter->rx_ring[i]->reg_idx;
3103 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3104 vlnctrl &= ~IXGBE_RXDCTL_VME;
3105 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3106 }
3107 break;
3108 default:
3109 break;
3110 }
3111}
3112
3113/**
3114 * ixgbe_vlan_filter_enable - helper to enable hw vlan filtering
3115 * @adapter: driver data
3116 */
3117static void ixgbe_vlan_filter_enable(struct ixgbe_adapter *adapter)
3118{
3119 struct ixgbe_hw *hw = &adapter->hw;
3120 u32 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
3121 int i, j;
3122
3123 switch (hw->mac.type) {
3124 case ixgbe_mac_82598EB:
3125 vlnctrl |= IXGBE_VLNCTRL_VME | IXGBE_VLNCTRL_VFE;
3126 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3127 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3128 break;
3129 case ixgbe_mac_82599EB:
3130 vlnctrl |= IXGBE_VLNCTRL_VFE;
3131 vlnctrl &= ~IXGBE_VLNCTRL_CFIEN;
3132 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
3133 for (i = 0; i < adapter->num_rx_queues; i++) {
3134 j = adapter->rx_ring[i]->reg_idx;
3135 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
3136 vlnctrl |= IXGBE_RXDCTL_VME;
3137 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
3138 }
3139 break;
3140 default:
3141 break;
3142 }
3143}
3144
Don Skidmore068c89b2009-01-19 16:54:36 -08003145static void ixgbe_vlan_rx_register(struct net_device *netdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00003146 struct vlan_group *grp)
Don Skidmore068c89b2009-01-19 16:54:36 -08003147{
3148 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Don Skidmore068c89b2009-01-19 16:54:36 -08003149
3150 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3151 ixgbe_irq_disable(adapter);
3152 adapter->vlgrp = grp;
3153
3154 /*
3155 * For a DCB driver, always enable VLAN tag stripping so we can
3156 * still receive traffic from a DCB-enabled host even if we're
3157 * not in DCB mode.
3158 */
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003159 ixgbe_vlan_filter_enable(adapter);
Alexander Duyckdc63d372009-11-23 06:32:57 +00003160
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003161 ixgbe_vlan_rx_add_vid(netdev, 0);
Don Skidmore068c89b2009-01-19 16:54:36 -08003162
3163 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003164 ixgbe_irq_enable(adapter, true, true);
Don Skidmore068c89b2009-01-19 16:54:36 -08003165}
3166
Auke Kok9a799d72007-09-15 14:07:45 -07003167static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
3168{
3169 ixgbe_vlan_rx_register(adapter->netdev, adapter->vlgrp);
3170
3171 if (adapter->vlgrp) {
3172 u16 vid;
3173 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
3174 if (!vlan_group_get_device(adapter->vlgrp, vid))
3175 continue;
3176 ixgbe_vlan_rx_add_vid(adapter->netdev, vid);
3177 }
3178 }
3179}
3180
3181/**
Alexander Duyck28500622010-06-15 09:25:48 +00003182 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
3183 * @netdev: network interface device structure
3184 *
3185 * Writes unicast address list to the RAR table.
3186 * Returns: -ENOMEM on failure/insufficient address space
3187 * 0 on no addresses written
3188 * X on writing X addresses to the RAR table
3189 **/
3190static int ixgbe_write_uc_addr_list(struct net_device *netdev)
3191{
3192 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3193 struct ixgbe_hw *hw = &adapter->hw;
3194 unsigned int vfn = adapter->num_vfs;
3195 unsigned int rar_entries = hw->mac.num_rar_entries - (vfn + 1);
3196 int count = 0;
3197
3198 /* return ENOMEM indicating insufficient memory for addresses */
3199 if (netdev_uc_count(netdev) > rar_entries)
3200 return -ENOMEM;
3201
3202 if (!netdev_uc_empty(netdev) && rar_entries) {
3203 struct netdev_hw_addr *ha;
3204 /* return error if we do not support writing to RAR table */
3205 if (!hw->mac.ops.set_rar)
3206 return -ENOMEM;
3207
3208 netdev_for_each_uc_addr(ha, netdev) {
3209 if (!rar_entries)
3210 break;
3211 hw->mac.ops.set_rar(hw, rar_entries--, ha->addr,
3212 vfn, IXGBE_RAH_AV);
3213 count++;
3214 }
3215 }
3216 /* write the addresses in reverse order to avoid write combining */
3217 for (; rar_entries > 0 ; rar_entries--)
3218 hw->mac.ops.clear_rar(hw, rar_entries);
3219
3220 return count;
3221}
3222
3223/**
Christopher Leech2c5645c2008-08-26 04:27:02 -07003224 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
Auke Kok9a799d72007-09-15 14:07:45 -07003225 * @netdev: network interface device structure
3226 *
Christopher Leech2c5645c2008-08-26 04:27:02 -07003227 * The set_rx_method entry point is called whenever the unicast/multicast
3228 * address list or the network interface flags are updated. This routine is
3229 * responsible for configuring the hardware for proper unicast, multicast and
3230 * promiscuous mode.
Auke Kok9a799d72007-09-15 14:07:45 -07003231 **/
Greg Rose7f870472010-01-09 02:25:29 +00003232void ixgbe_set_rx_mode(struct net_device *netdev)
Auke Kok9a799d72007-09-15 14:07:45 -07003233{
3234 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3235 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyck28500622010-06-15 09:25:48 +00003236 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
3237 int count;
Auke Kok9a799d72007-09-15 14:07:45 -07003238
3239 /* Check for Promiscuous and All Multicast modes */
3240
3241 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
3242
Alexander Duyckf5dc4422010-08-19 13:36:49 +00003243 /* set all bits that we expect to always be set */
3244 fctrl |= IXGBE_FCTRL_BAM;
3245 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
3246 fctrl |= IXGBE_FCTRL_PMCF;
3247
Alexander Duyck28500622010-06-15 09:25:48 +00003248 /* clear the bits we are changing the status of */
3249 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
3250
Auke Kok9a799d72007-09-15 14:07:45 -07003251 if (netdev->flags & IFF_PROMISC) {
Emil Tantilove433ea12010-05-13 17:33:00 +00003252 hw->addr_ctrl.user_set_promisc = true;
Auke Kok9a799d72007-09-15 14:07:45 -07003253 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
Alexander Duyck28500622010-06-15 09:25:48 +00003254 vmolr |= (IXGBE_VMOLR_ROPE | IXGBE_VMOLR_MPE);
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003255 /* don't hardware filter vlans in promisc mode */
3256 ixgbe_vlan_filter_disable(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003257 } else {
Patrick McHardy746b9f02008-07-16 20:15:45 -07003258 if (netdev->flags & IFF_ALLMULTI) {
3259 fctrl |= IXGBE_FCTRL_MPE;
Alexander Duyck28500622010-06-15 09:25:48 +00003260 vmolr |= IXGBE_VMOLR_MPE;
3261 } else {
3262 /*
3263 * Write addresses to the MTA, if the attempt fails
3264 * then we should just turn on promiscous mode so
3265 * that we can at least receive multicast traffic
3266 */
3267 hw->mac.ops.update_mc_addr_list(hw, netdev);
3268 vmolr |= IXGBE_VMOLR_ROMPE;
Patrick McHardy746b9f02008-07-16 20:15:45 -07003269 }
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003270 ixgbe_vlan_filter_enable(adapter);
Emil Tantilove433ea12010-05-13 17:33:00 +00003271 hw->addr_ctrl.user_set_promisc = false;
Alexander Duyck28500622010-06-15 09:25:48 +00003272 /*
3273 * Write addresses to available RAR registers, if there is not
3274 * sufficient space to store all the addresses then enable
3275 * unicast promiscous mode
3276 */
3277 count = ixgbe_write_uc_addr_list(netdev);
3278 if (count < 0) {
3279 fctrl |= IXGBE_FCTRL_UPE;
3280 vmolr |= IXGBE_VMOLR_ROPE;
3281 }
3282 }
3283
3284 if (adapter->num_vfs) {
3285 ixgbe_restore_vf_multicasts(adapter);
3286 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(adapter->num_vfs)) &
3287 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
3288 IXGBE_VMOLR_ROPE);
3289 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
Auke Kok9a799d72007-09-15 14:07:45 -07003290 }
3291
3292 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
Auke Kok9a799d72007-09-15 14:07:45 -07003293}
3294
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003295static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
3296{
3297 int q_idx;
3298 struct ixgbe_q_vector *q_vector;
3299 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3300
3301 /* legacy and MSI only use one vector */
3302 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3303 q_vectors = 1;
3304
3305 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
Jesse Brandeburgf0848272008-09-11 19:59:42 -07003306 struct napi_struct *napi;
Alexander Duyck7a921c92009-05-06 10:43:28 +00003307 q_vector = adapter->q_vector[q_idx];
Jesse Brandeburgf0848272008-09-11 19:59:42 -07003308 napi = &q_vector->napi;
Alexander Duyck91281fd2009-06-04 16:00:27 +00003309 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3310 if (!q_vector->rxr_count || !q_vector->txr_count) {
3311 if (q_vector->txr_count == 1)
3312 napi->poll = &ixgbe_clean_txonly;
3313 else if (q_vector->rxr_count == 1)
3314 napi->poll = &ixgbe_clean_rxonly;
3315 }
3316 }
Jesse Brandeburgf0848272008-09-11 19:59:42 -07003317
3318 napi_enable(napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003319 }
3320}
3321
3322static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
3323{
3324 int q_idx;
3325 struct ixgbe_q_vector *q_vector;
3326 int q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
3327
3328 /* legacy and MSI only use one vector */
3329 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED))
3330 q_vectors = 1;
3331
3332 for (q_idx = 0; q_idx < q_vectors; q_idx++) {
Alexander Duyck7a921c92009-05-06 10:43:28 +00003333 q_vector = adapter->q_vector[q_idx];
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003334 napi_disable(&q_vector->napi);
3335 }
3336}
3337
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08003338#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08003339/*
3340 * ixgbe_configure_dcb - Configure DCB hardware
3341 * @adapter: ixgbe adapter struct
3342 *
3343 * This is called by the driver on open to configure the DCB hardware.
3344 * This is also called by the gennetlink interface when reconfiguring
3345 * the DCB state.
3346 */
3347static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
3348{
3349 struct ixgbe_hw *hw = &adapter->hw;
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003350 u32 txdctl;
Alexander Duyck2f90b862008-11-20 20:52:10 -08003351 int i, j;
3352
Alexander Duyck67ebd792010-08-19 13:34:04 +00003353 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
3354 if (hw->mac.type == ixgbe_mac_82598EB)
3355 netif_set_gso_max_size(adapter->netdev, 65536);
3356 return;
3357 }
3358
3359 if (hw->mac.type == ixgbe_mac_82598EB)
3360 netif_set_gso_max_size(adapter->netdev, 32768);
3361
Alexander Duyck2f90b862008-11-20 20:52:10 -08003362 ixgbe_dcb_check_config(&adapter->dcb_cfg);
3363 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_TX_CONFIG);
3364 ixgbe_dcb_calculate_tc_credits(&adapter->dcb_cfg, DCB_RX_CONFIG);
3365
3366 /* reconfigure the hardware */
3367 ixgbe_dcb_hw_config(&adapter->hw, &adapter->dcb_cfg);
3368
3369 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003370 j = adapter->tx_ring[i]->reg_idx;
Alexander Duyck2f90b862008-11-20 20:52:10 -08003371 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3372 /* PThresh workaround for Tx hang with DFP enabled. */
3373 txdctl |= 32;
3374 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j), txdctl);
3375 }
3376 /* Enable VLAN tag insert/strip */
Jesse Brandeburg5f6c0182010-04-14 16:04:23 -07003377 ixgbe_vlan_filter_enable(adapter);
3378
Alexander Duyck2f90b862008-11-20 20:52:10 -08003379 hw->mac.ops.set_vfta(&adapter->hw, 0, 0, true);
3380}
3381
3382#endif
Auke Kok9a799d72007-09-15 14:07:45 -07003383static void ixgbe_configure(struct ixgbe_adapter *adapter)
3384{
3385 struct net_device *netdev = adapter->netdev;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003386 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003387 int i;
3388
Christopher Leech2c5645c2008-08-26 04:27:02 -07003389 ixgbe_set_rx_mode(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07003390
3391 ixgbe_restore_vlan(adapter);
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08003392#ifdef CONFIG_IXGBE_DCB
Alexander Duyck67ebd792010-08-19 13:34:04 +00003393 ixgbe_configure_dcb(adapter);
Alexander Duyck2f90b862008-11-20 20:52:10 -08003394#endif
Auke Kok9a799d72007-09-15 14:07:45 -07003395
Yi Zoueacd73f2009-05-13 13:11:06 +00003396#ifdef IXGBE_FCOE
3397 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
3398 ixgbe_configure_fcoe(adapter);
3399
3400#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003401 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3402 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003403 adapter->tx_ring[i]->atr_sample_rate =
Joe Perchese8e9f692010-09-07 21:34:53 +00003404 adapter->atr_sample_rate;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003405 ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
3406 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
3407 ixgbe_init_fdir_perfect_82599(hw, adapter->fdir_pballoc);
3408 }
Alexander Duyck933d41f2010-09-07 21:34:29 +00003409 ixgbe_configure_virtualization(adapter);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003410
Auke Kok9a799d72007-09-15 14:07:45 -07003411 ixgbe_configure_tx(adapter);
3412 ixgbe_configure_rx(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003413}
3414
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003415static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
3416{
3417 switch (hw->phy.type) {
3418 case ixgbe_phy_sfp_avago:
3419 case ixgbe_phy_sfp_ftl:
3420 case ixgbe_phy_sfp_intel:
3421 case ixgbe_phy_sfp_unknown:
Don Skidmoreea0a04d2010-05-18 16:00:13 +00003422 case ixgbe_phy_sfp_passive_tyco:
3423 case ixgbe_phy_sfp_passive_unknown:
3424 case ixgbe_phy_sfp_active_unknown:
3425 case ixgbe_phy_sfp_ftl_active:
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003426 return true;
3427 default:
3428 return false;
3429 }
3430}
3431
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003432/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003433 * ixgbe_sfp_link_config - set up SFP+ link
3434 * @adapter: pointer to private adapter struct
3435 **/
3436static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
3437{
3438 struct ixgbe_hw *hw = &adapter->hw;
3439
3440 if (hw->phy.multispeed_fiber) {
3441 /*
3442 * In multispeed fiber setups, the device may not have
3443 * had a physical connection when the driver loaded.
3444 * If that's the case, the initial link configuration
3445 * couldn't get the MAC into 10G or 1G mode, so we'll
3446 * never have a link status change interrupt fire.
3447 * We need to try and force an autonegotiation
3448 * session, then bring up link.
3449 */
3450 hw->mac.ops.setup_sfp(hw);
3451 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
3452 schedule_work(&adapter->multispeed_fiber_task);
3453 } else {
3454 /*
3455 * Direct Attach Cu and non-multispeed fiber modules
3456 * still need to be configured properly prior to
3457 * attempting link.
3458 */
3459 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_MOD_TASK))
3460 schedule_work(&adapter->sfp_config_module_task);
3461 }
3462}
3463
3464/**
3465 * ixgbe_non_sfp_link_config - set up non-SFP+ link
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003466 * @hw: pointer to private hardware struct
3467 *
3468 * Returns 0 on success, negative on failure
3469 **/
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003470static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003471{
3472 u32 autoneg;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00003473 bool negotiation, link_up = false;
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003474 u32 ret = IXGBE_ERR_LINK_SETUP;
3475
3476 if (hw->mac.ops.check_link)
3477 ret = hw->mac.ops.check_link(hw, &autoneg, &link_up, false);
3478
3479 if (ret)
3480 goto link_cfg_out;
3481
3482 if (hw->mac.ops.get_link_capabilities)
Joe Perchese8e9f692010-09-07 21:34:53 +00003483 ret = hw->mac.ops.get_link_capabilities(hw, &autoneg,
3484 &negotiation);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003485 if (ret)
3486 goto link_cfg_out;
3487
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00003488 if (hw->mac.ops.setup_link)
3489 ret = hw->mac.ops.setup_link(hw, autoneg, negotiation, link_up);
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003490link_cfg_out:
3491 return ret;
3492}
3493
Alexander Duycka34bcff2010-08-19 13:39:20 +00003494static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07003495{
Auke Kok9a799d72007-09-15 14:07:45 -07003496 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00003497 u32 gpie = 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003498
Jesse Brandeburg9b471442009-12-03 11:33:54 +00003499 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
Alexander Duycka34bcff2010-08-19 13:39:20 +00003500 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
3501 IXGBE_GPIE_OCD;
3502 gpie |= IXGBE_GPIE_EIAME;
Jesse Brandeburg9b471442009-12-03 11:33:54 +00003503 /*
3504 * use EIAM to auto-mask when MSI-X interrupt is asserted
3505 * this saves a register write for every interrupt
3506 */
3507 switch (hw->mac.type) {
3508 case ixgbe_mac_82598EB:
3509 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
3510 break;
3511 default:
3512 case ixgbe_mac_82599EB:
3513 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
3514 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
3515 break;
3516 }
3517 } else {
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003518 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
3519 * specifically only auto mask tx and rx interrupts */
3520 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07003521 }
3522
Alexander Duycka34bcff2010-08-19 13:39:20 +00003523 /* XXX: to interrupt immediately for EICS writes, enable this */
3524 /* gpie |= IXGBE_GPIE_EIMEN; */
3525
3526 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3527 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
3528 gpie |= IXGBE_GPIE_VTMODE_64;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07003529 }
3530
Alexander Duycka34bcff2010-08-19 13:39:20 +00003531 /* Enable fan failure interrupt */
3532 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07003533 gpie |= IXGBE_SDP1_GPIEN;
Jesse Brandeburg0befdb32008-10-31 00:46:40 -07003534
Alexander Duycka34bcff2010-08-19 13:39:20 +00003535 if (hw->mac.type == ixgbe_mac_82599EB)
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003536 gpie |= IXGBE_SDP1_GPIEN;
3537 gpie |= IXGBE_SDP2_GPIEN;
Alexander Duycka34bcff2010-08-19 13:39:20 +00003538
3539 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
3540}
3541
3542static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
3543{
3544 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duycka34bcff2010-08-19 13:39:20 +00003545 int err;
Alexander Duycka34bcff2010-08-19 13:39:20 +00003546 u32 ctrl_ext;
3547
3548 ixgbe_get_hw_control(adapter);
3549 ixgbe_setup_gpie(adapter);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003550
Auke Kok9a799d72007-09-15 14:07:45 -07003551 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3552 ixgbe_configure_msix(adapter);
3553 else
3554 ixgbe_configure_msi_and_legacy(adapter);
3555
Peter Waskiewicz61fac742010-04-27 00:38:15 +00003556 /* enable the optics */
3557 if (hw->phy.multispeed_fiber)
3558 hw->mac.ops.enable_tx_laser(hw);
3559
Auke Kok9a799d72007-09-15 14:07:45 -07003560 clear_bit(__IXGBE_DOWN, &adapter->state);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003561 ixgbe_napi_enable_all(adapter);
3562
3563 /* clear any pending interrupts, may auto mask */
3564 IXGBE_READ_REG(hw, IXGBE_EICR);
Emil Tantilov6af3b9e2010-09-29 21:35:23 +00003565 ixgbe_irq_enable(adapter, true, true);
Auke Kok9a799d72007-09-15 14:07:45 -07003566
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003567 /*
Don Skidmorebf069c92009-05-07 10:39:54 +00003568 * If this adapter has a fan, check to see if we had a failure
3569 * before we enabled the interrupt.
3570 */
3571 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
3572 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
3573 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +00003574 e_crit(drv, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +00003575 }
3576
3577 /*
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003578 * For hot-pluggable SFP+ devices, a new SFP+ module may have
Don Skidmore19343de2009-07-02 12:50:31 +00003579 * arrived before interrupts were enabled but after probe. Such
3580 * devices wouldn't have their type identified yet. We need to
3581 * kick off the SFP+ module setup first, then try to bring up link.
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003582 * If we're not hot-pluggable SFP+, we just need to configure link
3583 * and bring it up.
3584 */
Don Skidmore19343de2009-07-02 12:50:31 +00003585 if (hw->phy.type == ixgbe_phy_unknown) {
3586 err = hw->phy.ops.identify(hw);
3587 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Don Skidmore5da43c12009-07-02 12:50:52 +00003588 /*
3589 * Take the device down and schedule the sfp tasklet
3590 * which will unregister_netdev and log it.
3591 */
Don Skidmore19343de2009-07-02 12:50:31 +00003592 ixgbe_down(adapter);
Don Skidmore5da43c12009-07-02 12:50:52 +00003593 schedule_work(&adapter->sfp_config_module_task);
Don Skidmore19343de2009-07-02 12:50:31 +00003594 return err;
3595 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003596 }
3597
3598 if (ixgbe_is_sfp(hw)) {
3599 ixgbe_sfp_link_config(adapter);
3600 } else {
3601 err = ixgbe_non_sfp_link_config(hw);
3602 if (err)
Emil Tantilov396e7992010-07-01 20:05:12 +00003603 e_err(probe, "link_config FAILED %d\n", err);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00003604 }
Peter P Waskiewicz Jr0ecc0612009-02-06 21:46:54 -08003605
Peter P Waskiewicz Jr1da100b2009-01-19 16:55:03 -08003606 /* enable transmits */
Alexander Duyck477de6e2010-08-19 13:38:11 +00003607 netif_tx_start_all_queues(adapter->netdev);
Peter P Waskiewicz Jr1da100b2009-01-19 16:55:03 -08003608
Auke Kok9a799d72007-09-15 14:07:45 -07003609 /* bring the link up in the watchdog, this could race with our first
3610 * link up interrupt but shouldn't be a problem */
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003611 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
3612 adapter->link_check_timeout = jiffies;
Auke Kok9a799d72007-09-15 14:07:45 -07003613 mod_timer(&adapter->watchdog_timer, jiffies);
Greg Rosec9205692010-01-22 22:46:22 +00003614
3615 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
3616 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
3617 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
3618 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
3619
Auke Kok9a799d72007-09-15 14:07:45 -07003620 return 0;
3621}
3622
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003623void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
3624{
3625 WARN_ON(in_interrupt());
3626 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
3627 msleep(1);
3628 ixgbe_down(adapter);
Greg Rose5809a1a2010-03-24 09:36:08 +00003629 /*
3630 * If SR-IOV enabled then wait a bit before bringing the adapter
3631 * back up to give the VFs time to respond to the reset. The
3632 * two second wait is based upon the watchdog timer cycle in
3633 * the VF driver.
3634 */
3635 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3636 msleep(2000);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003637 ixgbe_up(adapter);
3638 clear_bit(__IXGBE_RESETTING, &adapter->state);
3639}
3640
Auke Kok9a799d72007-09-15 14:07:45 -07003641int ixgbe_up(struct ixgbe_adapter *adapter)
3642{
3643 /* hardware has been reset, we need to reload some things */
3644 ixgbe_configure(adapter);
3645
3646 return ixgbe_up_complete(adapter);
3647}
3648
3649void ixgbe_reset(struct ixgbe_adapter *adapter)
3650{
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07003651 struct ixgbe_hw *hw = &adapter->hw;
Don Skidmore8ca783a2009-05-26 20:40:47 -07003652 int err;
3653
3654 err = hw->mac.ops.init_hw(hw);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003655 switch (err) {
3656 case 0:
3657 case IXGBE_ERR_SFP_NOT_PRESENT:
3658 break;
3659 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
Emil Tantilov849c4542010-06-03 16:53:41 +00003660 e_dev_err("master disable timed out\n");
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003661 break;
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00003662 case IXGBE_ERR_EEPROM_VERSION:
3663 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +00003664 e_dev_warn("This device is a pre-production adapter/LOM. "
3665 "Please be aware there may be issuesassociated with "
3666 "your hardware. If you are experiencing problems "
3667 "please contact your Intel or hardware "
3668 "representative who provided you with this "
3669 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00003670 break;
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003671 default:
Emil Tantilov849c4542010-06-03 16:53:41 +00003672 e_dev_err("Hardware Error: %d\n", err);
Peter P Waskiewicz Jrda4dd0f2009-06-04 11:10:35 +00003673 }
Auke Kok9a799d72007-09-15 14:07:45 -07003674
3675 /* reprogram the RAR[0] in case user changed it. */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00003676 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
3677 IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07003678}
3679
Auke Kok9a799d72007-09-15 14:07:45 -07003680/**
3681 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
3682 * @adapter: board private structure
3683 * @rx_ring: ring to free buffers from
3684 **/
3685static void ixgbe_clean_rx_ring(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00003686 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003687{
3688 struct pci_dev *pdev = adapter->pdev;
3689 unsigned long size;
3690 unsigned int i;
3691
Alexander Duyck84418e32010-08-19 13:40:54 +00003692 /* ring already cleared, nothing to do */
3693 if (!rx_ring->rx_buffer_info)
3694 return;
Auke Kok9a799d72007-09-15 14:07:45 -07003695
Alexander Duyck84418e32010-08-19 13:40:54 +00003696 /* Free all the Rx ring sk_buffs */
Auke Kok9a799d72007-09-15 14:07:45 -07003697 for (i = 0; i < rx_ring->count; i++) {
3698 struct ixgbe_rx_buffer *rx_buffer_info;
3699
3700 rx_buffer_info = &rx_ring->rx_buffer_info[i];
3701 if (rx_buffer_info->dma) {
Nick Nunley1b507732010-04-27 13:10:27 +00003702 dma_unmap_single(&pdev->dev, rx_buffer_info->dma,
Joe Perchese8e9f692010-09-07 21:34:53 +00003703 rx_ring->rx_buf_len,
Nick Nunley1b507732010-04-27 13:10:27 +00003704 DMA_FROM_DEVICE);
Auke Kok9a799d72007-09-15 14:07:45 -07003705 rx_buffer_info->dma = 0;
3706 }
3707 if (rx_buffer_info->skb) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00003708 struct sk_buff *skb = rx_buffer_info->skb;
Auke Kok9a799d72007-09-15 14:07:45 -07003709 rx_buffer_info->skb = NULL;
Alexander Duyckf8212f92009-04-27 22:42:37 +00003710 do {
3711 struct sk_buff *this = skb;
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00003712 if (IXGBE_RSC_CB(this)->delay_unmap) {
Nick Nunley1b507732010-04-27 13:10:27 +00003713 dma_unmap_single(&pdev->dev,
3714 IXGBE_RSC_CB(this)->dma,
Joe Perchese8e9f692010-09-07 21:34:53 +00003715 rx_ring->rx_buf_len,
Nick Nunley1b507732010-04-27 13:10:27 +00003716 DMA_FROM_DEVICE);
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00003717 IXGBE_RSC_CB(this)->dma = 0;
Mallikarjuna R Chilakalae8171aa2010-05-13 17:33:21 +00003718 IXGBE_RSC_CB(skb)->delay_unmap = false;
Mallikarjuna R Chilakalafd3686a2010-03-19 04:41:33 +00003719 }
Alexander Duyckf8212f92009-04-27 22:42:37 +00003720 skb = skb->prev;
3721 dev_kfree_skb(this);
3722 } while (skb);
Auke Kok9a799d72007-09-15 14:07:45 -07003723 }
3724 if (!rx_buffer_info->page)
3725 continue;
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +00003726 if (rx_buffer_info->page_dma) {
Nick Nunley1b507732010-04-27 13:10:27 +00003727 dma_unmap_page(&pdev->dev, rx_buffer_info->page_dma,
3728 PAGE_SIZE / 2, DMA_FROM_DEVICE);
Jesse Brandeburg4f57ca62009-06-30 11:44:56 +00003729 rx_buffer_info->page_dma = 0;
3730 }
Auke Kok9a799d72007-09-15 14:07:45 -07003731 put_page(rx_buffer_info->page);
3732 rx_buffer_info->page = NULL;
Jesse Brandeburg762f4c52008-09-11 19:58:43 -07003733 rx_buffer_info->page_offset = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003734 }
3735
3736 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
3737 memset(rx_ring->rx_buffer_info, 0, size);
3738
3739 /* Zero out the descriptor ring */
3740 memset(rx_ring->desc, 0, rx_ring->size);
3741
3742 rx_ring->next_to_clean = 0;
3743 rx_ring->next_to_use = 0;
3744
Jesse Brandeburg9891ca72009-03-13 22:14:50 +00003745 if (rx_ring->head)
3746 writel(0, adapter->hw.hw_addr + rx_ring->head);
3747 if (rx_ring->tail)
3748 writel(0, adapter->hw.hw_addr + rx_ring->tail);
Auke Kok9a799d72007-09-15 14:07:45 -07003749}
3750
3751/**
3752 * ixgbe_clean_tx_ring - Free Tx Buffers
3753 * @adapter: board private structure
3754 * @tx_ring: ring to be cleaned
3755 **/
3756static void ixgbe_clean_tx_ring(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00003757 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07003758{
3759 struct ixgbe_tx_buffer *tx_buffer_info;
3760 unsigned long size;
3761 unsigned int i;
3762
Alexander Duyck84418e32010-08-19 13:40:54 +00003763 /* ring already cleared, nothing to do */
3764 if (!tx_ring->tx_buffer_info)
3765 return;
Auke Kok9a799d72007-09-15 14:07:45 -07003766
Alexander Duyck84418e32010-08-19 13:40:54 +00003767 /* Free all the Tx ring sk_buffs */
Auke Kok9a799d72007-09-15 14:07:45 -07003768 for (i = 0; i < tx_ring->count; i++) {
3769 tx_buffer_info = &tx_ring->tx_buffer_info[i];
3770 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
3771 }
3772
3773 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
3774 memset(tx_ring->tx_buffer_info, 0, size);
3775
3776 /* Zero out the descriptor ring */
3777 memset(tx_ring->desc, 0, tx_ring->size);
3778
3779 tx_ring->next_to_use = 0;
3780 tx_ring->next_to_clean = 0;
3781
Jesse Brandeburg9891ca72009-03-13 22:14:50 +00003782 if (tx_ring->head)
3783 writel(0, adapter->hw.hw_addr + tx_ring->head);
3784 if (tx_ring->tail)
3785 writel(0, adapter->hw.hw_addr + tx_ring->tail);
Auke Kok9a799d72007-09-15 14:07:45 -07003786}
3787
3788/**
Auke Kok9a799d72007-09-15 14:07:45 -07003789 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
3790 * @adapter: board private structure
3791 **/
3792static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
3793{
3794 int i;
3795
3796 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003797 ixgbe_clean_rx_ring(adapter, adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07003798}
3799
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003800/**
3801 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
3802 * @adapter: board private structure
3803 **/
3804static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
3805{
3806 int i;
3807
3808 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003809 ixgbe_clean_tx_ring(adapter, adapter->tx_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003810}
3811
Auke Kok9a799d72007-09-15 14:07:45 -07003812void ixgbe_down(struct ixgbe_adapter *adapter)
3813{
3814 struct net_device *netdev = adapter->netdev;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003815 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07003816 u32 rxctrl;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003817 u32 txdctl;
3818 int i, j;
Auke Kok9a799d72007-09-15 14:07:45 -07003819
3820 /* signal that we are down to the interrupt handler */
3821 set_bit(__IXGBE_DOWN, &adapter->state);
3822
Greg Rose767081a2010-01-22 22:46:40 +00003823 /* disable receive for all VFs and wait one second */
3824 if (adapter->num_vfs) {
Greg Rose767081a2010-01-22 22:46:40 +00003825 /* ping all the active vfs to let them know we are going down */
3826 ixgbe_ping_all_vfs(adapter);
Greg Rose581d1aa2010-03-24 09:36:27 +00003827
Greg Rose767081a2010-01-22 22:46:40 +00003828 /* Disable all VFTE/VFRE TX/RX */
3829 ixgbe_disable_tx_rx(adapter);
Greg Rose581d1aa2010-03-24 09:36:27 +00003830
3831 /* Mark all the VFs as inactive */
3832 for (i = 0 ; i < adapter->num_vfs; i++)
3833 adapter->vfinfo[i].clear_to_send = 0;
Greg Rose767081a2010-01-22 22:46:40 +00003834 }
3835
Auke Kok9a799d72007-09-15 14:07:45 -07003836 /* disable receives */
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003837 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3838 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN);
Auke Kok9a799d72007-09-15 14:07:45 -07003839
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003840 IXGBE_WRITE_FLUSH(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07003841 msleep(10);
3842
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003843 netif_tx_stop_all_queues(netdev);
3844
Don Skidmore0a1f87c2009-09-18 09:45:43 +00003845 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
3846 del_timer_sync(&adapter->sfp_timer);
Auke Kok9a799d72007-09-15 14:07:45 -07003847 del_timer_sync(&adapter->watchdog_timer);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07003848 cancel_work_sync(&adapter->watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07003849
John Fastabendc0dfb902010-04-27 02:13:39 +00003850 netif_carrier_off(netdev);
3851 netif_tx_disable(netdev);
3852
3853 ixgbe_irq_disable(adapter);
3854
3855 ixgbe_napi_disable_all(adapter);
3856
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00003857 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
3858 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
3859 cancel_work_sync(&adapter->fdir_reinit_task);
3860
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07003861 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
3862 cancel_work_sync(&adapter->check_overtemp_task);
3863
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003864 /* disable transmits in the hardware now that interrupts are off */
3865 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003866 j = adapter->tx_ring[i]->reg_idx;
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003867 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(j));
3868 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(j),
Joe Perchese8e9f692010-09-07 21:34:53 +00003869 (txdctl & ~IXGBE_TXDCTL_ENABLE));
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003870 }
PJ Waskiewicz88512532009-03-13 22:15:10 +00003871 /* Disable the Tx DMA engine on 82599 */
3872 if (hw->mac.type == ixgbe_mac_82599EB)
3873 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
Joe Perchese8e9f692010-09-07 21:34:53 +00003874 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
3875 ~IXGBE_DMATXCTL_TE));
Jesse Brandeburg7f821872008-09-11 20:00:16 -07003876
John Fastabend9f756f02010-06-29 18:28:36 +00003877 /* power down the optics */
3878 if (hw->phy.multispeed_fiber)
3879 hw->mac.ops.disable_tx_laser(hw);
3880
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00003881 /* clear n-tuple filters that are cached */
3882 ethtool_ntuple_flush(netdev);
3883
Paul Larson6f4a0e42008-06-24 17:00:56 -07003884 if (!pci_channel_offline(adapter->pdev))
3885 ixgbe_reset(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003886 ixgbe_clean_all_tx_rings(adapter);
3887 ixgbe_clean_all_rx_rings(adapter);
3888
Jeff Garzik5dd2d332008-10-16 05:09:31 -04003889#ifdef CONFIG_IXGBE_DCA
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07003890 /* since we reset the hardware DCA settings were cleared */
Alexander Duycke35ec122009-05-21 13:07:12 +00003891 ixgbe_setup_dca(adapter);
Jesse Brandeburg96b0e0f2008-08-26 04:27:21 -07003892#endif
Auke Kok9a799d72007-09-15 14:07:45 -07003893}
3894
Auke Kok9a799d72007-09-15 14:07:45 -07003895/**
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003896 * ixgbe_poll - NAPI Rx polling callback
3897 * @napi: structure for representing this polling device
3898 * @budget: how many packets driver is allowed to clean
3899 *
3900 * This function is used for legacy and MSI, NAPI mode
Auke Kok9a799d72007-09-15 14:07:45 -07003901 **/
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003902static int ixgbe_poll(struct napi_struct *napi, int budget)
Auke Kok9a799d72007-09-15 14:07:45 -07003903{
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003904 struct ixgbe_q_vector *q_vector =
Joe Perchese8e9f692010-09-07 21:34:53 +00003905 container_of(napi, struct ixgbe_q_vector, napi);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08003906 struct ixgbe_adapter *adapter = q_vector->adapter;
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003907 int tx_clean_complete, work_done = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07003908
Jeff Garzik5dd2d332008-10-16 05:09:31 -04003909#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08003910 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003911 ixgbe_update_tx_dca(adapter, adapter->tx_ring[0]);
3912 ixgbe_update_rx_dca(adapter, adapter->rx_ring[0]);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08003913 }
3914#endif
3915
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00003916 tx_clean_complete = ixgbe_clean_tx_irq(q_vector, adapter->tx_ring[0]);
3917 ixgbe_clean_rx_irq(q_vector, adapter->rx_ring[0], &work_done, budget);
Auke Kok9a799d72007-09-15 14:07:45 -07003918
Jesse Brandeburg9a1a69ad2009-03-13 22:14:10 +00003919 if (!tx_clean_complete)
David S. Millerd2c7ddd2008-01-15 22:43:24 -08003920 work_done = budget;
3921
David S. Miller53e52c72008-01-07 21:06:12 -08003922 /* If budget not fully consumed, exit the polling mode */
3923 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -08003924 napi_complete(napi);
Nelson, Shannonf7554a22009-09-18 09:46:06 +00003925 if (adapter->rx_itr_setting & 1)
Ayyappan Veeraiyanf494e8f2008-03-03 15:03:57 -08003926 ixgbe_set_itr(adapter);
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003927 if (!test_bit(__IXGBE_DOWN, &adapter->state))
Nelson, Shannon835462f2009-04-27 22:42:54 +00003928 ixgbe_irq_enable_queues(adapter, IXGBE_EIMS_RTX_QUEUE);
Auke Kok9a799d72007-09-15 14:07:45 -07003929 }
Auke Kok9a799d72007-09-15 14:07:45 -07003930 return work_done;
3931}
3932
3933/**
3934 * ixgbe_tx_timeout - Respond to a Tx Hang
3935 * @netdev: network interface device structure
3936 **/
3937static void ixgbe_tx_timeout(struct net_device *netdev)
3938{
3939 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3940
3941 /* Do the reset outside of interrupt context */
3942 schedule_work(&adapter->reset_task);
3943}
3944
3945static void ixgbe_reset_task(struct work_struct *work)
3946{
3947 struct ixgbe_adapter *adapter;
3948 adapter = container_of(work, struct ixgbe_adapter, reset_task);
3949
Alexander Duyck2f90b862008-11-20 20:52:10 -08003950 /* If we're already down or resetting, just bail */
3951 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
3952 test_bit(__IXGBE_RESETTING, &adapter->state))
3953 return;
3954
Auke Kok9a799d72007-09-15 14:07:45 -07003955 adapter->tx_timeout_count++;
3956
Taku Izumidcd79ae2010-04-27 14:39:53 +00003957 ixgbe_dump(adapter);
3958 netdev_err(adapter->netdev, "Reset adapter\n");
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08003959 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07003960}
3961
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003962#ifdef CONFIG_IXGBE_DCB
3963static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003964{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003965 bool ret = false;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003966 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_DCB];
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003967
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003968 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
3969 return ret;
3970
3971 f->mask = 0x7 << 3;
3972 adapter->num_rx_queues = f->indices;
3973 adapter->num_tx_queues = f->indices;
3974 ret = true;
Jesse Brandeburgb9804972008-09-11 20:00:29 -07003975
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003976 return ret;
3977}
3978#endif
3979
Jesse Brandeburg4df10462009-03-13 22:15:31 +00003980/**
3981 * ixgbe_set_rss_queues: Allocate queues for RSS
3982 * @adapter: board private structure to initialize
3983 *
3984 * This is our "base" multiqueue mode. RSS (Receive Side Scaling) will try
3985 * to allocate one Rx queue per CPU, and if available, one Tx queue per CPU.
3986 *
3987 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003988static inline bool ixgbe_set_rss_queues(struct ixgbe_adapter *adapter)
3989{
3990 bool ret = false;
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003991 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_RSS];
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003992
3993 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Jesse Brandeburg0cefafa2009-05-19 09:19:11 +00003994 f->mask = 0xF;
3995 adapter->num_rx_queues = f->indices;
3996 adapter->num_tx_queues = f->indices;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003997 ret = true;
3998 } else {
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08003999 ret = false;
4000 }
4001
4002 return ret;
4003}
4004
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004005/**
4006 * ixgbe_set_fdir_queues: Allocate queues for Flow Director
4007 * @adapter: board private structure to initialize
4008 *
4009 * Flow Director is an advanced Rx filter, attempting to get Rx flows back
4010 * to the original CPU that initiated the Tx session. This runs in addition
4011 * to RSS, so if a packet doesn't match an FDIR filter, we can still spread the
4012 * Rx load across CPUs using RSS.
4013 *
4014 **/
Joe Perchese8e9f692010-09-07 21:34:53 +00004015static inline bool ixgbe_set_fdir_queues(struct ixgbe_adapter *adapter)
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004016{
4017 bool ret = false;
4018 struct ixgbe_ring_feature *f_fdir = &adapter->ring_feature[RING_F_FDIR];
4019
4020 f_fdir->indices = min((int)num_online_cpus(), f_fdir->indices);
4021 f_fdir->mask = 0;
4022
4023 /* Flow Director must have RSS enabled */
4024 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4025 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4026 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)))) {
4027 adapter->num_tx_queues = f_fdir->indices;
4028 adapter->num_rx_queues = f_fdir->indices;
4029 ret = true;
4030 } else {
4031 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4032 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4033 }
4034 return ret;
4035}
4036
Yi Zou0331a832009-05-17 12:33:52 +00004037#ifdef IXGBE_FCOE
4038/**
4039 * ixgbe_set_fcoe_queues: Allocate queues for Fiber Channel over Ethernet (FCoE)
4040 * @adapter: board private structure to initialize
4041 *
4042 * FCoE RX FCRETA can use up to 8 rx queues for up to 8 different exchanges.
4043 * The ring feature mask is not used as a mask for FCoE, as it can take any 8
4044 * rx queues out of the max number of rx queues, instead, it is used as the
4045 * index of the first rx queue used by FCoE.
4046 *
4047 **/
4048static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
4049{
4050 bool ret = false;
4051 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4052
4053 f->indices = min((int)num_online_cpus(), f->indices);
4054 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
Yi Zou8de8b2e2009-09-03 14:55:50 +00004055 adapter->num_rx_queues = 1;
4056 adapter->num_tx_queues = 1;
Yi Zou0331a832009-05-17 12:33:52 +00004057#ifdef CONFIG_IXGBE_DCB
4058 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Emil Tantilov396e7992010-07-01 20:05:12 +00004059 e_info(probe, "FCoE enabled with DCB\n");
Yi Zou0331a832009-05-17 12:33:52 +00004060 ixgbe_set_dcb_queues(adapter);
4061 }
4062#endif
4063 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Emil Tantilov396e7992010-07-01 20:05:12 +00004064 e_info(probe, "FCoE enabled with RSS\n");
Yi Zou8faa2a72009-07-09 02:29:50 +00004065 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4066 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4067 ixgbe_set_fdir_queues(adapter);
4068 else
4069 ixgbe_set_rss_queues(adapter);
Yi Zou0331a832009-05-17 12:33:52 +00004070 }
4071 /* adding FCoE rx rings to the end */
4072 f->mask = adapter->num_rx_queues;
4073 adapter->num_rx_queues += f->indices;
Yi Zou8de8b2e2009-09-03 14:55:50 +00004074 adapter->num_tx_queues += f->indices;
Yi Zou0331a832009-05-17 12:33:52 +00004075
4076 ret = true;
4077 }
4078
4079 return ret;
4080}
4081
4082#endif /* IXGBE_FCOE */
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004083/**
4084 * ixgbe_set_sriov_queues: Allocate queues for IOV use
4085 * @adapter: board private structure to initialize
4086 *
4087 * IOV doesn't actually use anything, so just NAK the
4088 * request for now and let the other queue routines
4089 * figure out what to do.
4090 */
4091static inline bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
4092{
4093 return false;
4094}
4095
Jesse Brandeburg4df10462009-03-13 22:15:31 +00004096/*
4097 * ixgbe_set_num_queues: Allocate queues for device, feature dependant
4098 * @adapter: board private structure to initialize
4099 *
4100 * This is the top level queue allocation routine. The order here is very
4101 * important, starting with the "most" number of features turned on at once,
4102 * and ending with the smallest set of features. This way large combinations
4103 * can be allocated if they're turned on, and smaller combinations are the
4104 * fallthrough conditions.
4105 *
4106 **/
Ben Hutchings847f53f2010-09-27 08:28:56 +00004107static int ixgbe_set_num_queues(struct ixgbe_adapter *adapter)
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004108{
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004109 /* Start with base case */
4110 adapter->num_rx_queues = 1;
4111 adapter->num_tx_queues = 1;
4112 adapter->num_rx_pools = adapter->num_rx_queues;
4113 adapter->num_rx_queues_per_pool = 1;
4114
4115 if (ixgbe_set_sriov_queues(adapter))
Ben Hutchings847f53f2010-09-27 08:28:56 +00004116 goto done;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004117
Yi Zou0331a832009-05-17 12:33:52 +00004118#ifdef IXGBE_FCOE
4119 if (ixgbe_set_fcoe_queues(adapter))
4120 goto done;
4121
4122#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004123#ifdef CONFIG_IXGBE_DCB
4124 if (ixgbe_set_dcb_queues(adapter))
Wu Fengguangaf22ab12009-04-14 21:54:07 -07004125 goto done;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004126
4127#endif
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004128 if (ixgbe_set_fdir_queues(adapter))
4129 goto done;
4130
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004131 if (ixgbe_set_rss_queues(adapter))
Wu Fengguangaf22ab12009-04-14 21:54:07 -07004132 goto done;
4133
4134 /* fallback to base case */
4135 adapter->num_rx_queues = 1;
4136 adapter->num_tx_queues = 1;
4137
4138done:
Ben Hutchings847f53f2010-09-27 08:28:56 +00004139 /* Notify the stack of the (possibly) reduced queue counts. */
John Fastabendf0796d52010-07-01 13:21:57 +00004140 netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues);
Ben Hutchings847f53f2010-09-27 08:28:56 +00004141 return netif_set_real_num_rx_queues(adapter->netdev,
4142 adapter->num_rx_queues);
Jesse Brandeburgb9804972008-09-11 20:00:29 -07004143}
4144
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004145static void ixgbe_acquire_msix_vectors(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00004146 int vectors)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004147{
4148 int err, vector_threshold;
4149
4150 /* We'll want at least 3 (vector_threshold):
4151 * 1) TxQ[0] Cleanup
4152 * 2) RxQ[0] Cleanup
4153 * 3) Other (Link Status Change, etc.)
4154 * 4) TCP Timer (optional)
4155 */
4156 vector_threshold = MIN_MSIX_COUNT;
4157
4158 /* The more we get, the more we will assign to Tx/Rx Cleanup
4159 * for the separate queues...where Rx Cleanup >= Tx Cleanup.
4160 * Right now, we simply care about how many we'll get; we'll
4161 * set them up later while requesting irq's.
4162 */
4163 while (vectors >= vector_threshold) {
4164 err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
Joe Perchese8e9f692010-09-07 21:34:53 +00004165 vectors);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004166 if (!err) /* Success in acquiring all requested vectors. */
4167 break;
4168 else if (err < 0)
4169 vectors = 0; /* Nasty failure, quit now */
4170 else /* err == number of vectors we should try again with */
4171 vectors = err;
4172 }
4173
4174 if (vectors < vector_threshold) {
4175 /* Can't allocate enough MSI-X interrupts? Oh well.
4176 * This just means we'll go with either a single MSI
4177 * vector or fall back to legacy interrupts.
4178 */
Emil Tantilov849c4542010-06-03 16:53:41 +00004179 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4180 "Unable to allocate MSI-X interrupts\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004181 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4182 kfree(adapter->msix_entries);
4183 adapter->msix_entries = NULL;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004184 } else {
4185 adapter->flags |= IXGBE_FLAG_MSIX_ENABLED; /* Woot! */
Peter P Waskiewicz Jreb7f1392009-02-01 01:18:58 -08004186 /*
4187 * Adjust for only the vectors we'll use, which is minimum
4188 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
4189 * vectors we were allocated.
4190 */
4191 adapter->num_msix_vectors = min(vectors,
Joe Perchese8e9f692010-09-07 21:34:53 +00004192 adapter->max_msix_q_vectors + NON_Q_VECTORS);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004193 }
4194}
4195
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004196/**
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004197 * ixgbe_cache_ring_rss - Descriptor ring to register mapping for RSS
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004198 * @adapter: board private structure to initialize
4199 *
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004200 * Cache the descriptor ring offsets for RSS to the assigned rings.
4201 *
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004202 **/
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004203static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004204{
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004205 int i;
4206 bool ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004207
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004208 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
4209 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004210 adapter->rx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004211 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004212 adapter->tx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004213 ret = true;
4214 } else {
4215 ret = false;
4216 }
4217
4218 return ret;
4219}
4220
4221#ifdef CONFIG_IXGBE_DCB
4222/**
4223 * ixgbe_cache_ring_dcb - Descriptor ring to register mapping for DCB
4224 * @adapter: board private structure to initialize
4225 *
4226 * Cache the descriptor ring offsets for DCB to the assigned rings.
4227 *
4228 **/
4229static inline bool ixgbe_cache_ring_dcb(struct ixgbe_adapter *adapter)
4230{
4231 int i;
4232 bool ret = false;
4233 int dcb_i = adapter->ring_feature[RING_F_DCB].indices;
4234
4235 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
4236 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
Alexander Duyck2f90b862008-11-20 20:52:10 -08004237 /* the number of queues is assumed to be symmetric */
4238 for (i = 0; i < dcb_i; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004239 adapter->rx_ring[i]->reg_idx = i << 3;
4240 adapter->tx_ring[i]->reg_idx = i << 2;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004241 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004242 ret = true;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004243 } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004244 if (dcb_i == 8) {
4245 /*
4246 * Tx TC0 starts at: descriptor queue 0
4247 * Tx TC1 starts at: descriptor queue 32
4248 * Tx TC2 starts at: descriptor queue 64
4249 * Tx TC3 starts at: descriptor queue 80
4250 * Tx TC4 starts at: descriptor queue 96
4251 * Tx TC5 starts at: descriptor queue 104
4252 * Tx TC6 starts at: descriptor queue 112
4253 * Tx TC7 starts at: descriptor queue 120
4254 *
4255 * Rx TC0-TC7 are offset by 16 queues each
4256 */
4257 for (i = 0; i < 3; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004258 adapter->tx_ring[i]->reg_idx = i << 5;
4259 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004260 }
4261 for ( ; i < 5; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004262 adapter->tx_ring[i]->reg_idx =
Joe Perchese8e9f692010-09-07 21:34:53 +00004263 ((i + 2) << 4);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004264 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004265 }
4266 for ( ; i < dcb_i; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004267 adapter->tx_ring[i]->reg_idx =
Joe Perchese8e9f692010-09-07 21:34:53 +00004268 ((i + 8) << 3);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004269 adapter->rx_ring[i]->reg_idx = i << 4;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004270 }
4271
4272 ret = true;
4273 } else if (dcb_i == 4) {
4274 /*
4275 * Tx TC0 starts at: descriptor queue 0
4276 * Tx TC1 starts at: descriptor queue 64
4277 * Tx TC2 starts at: descriptor queue 96
4278 * Tx TC3 starts at: descriptor queue 112
4279 *
4280 * Rx TC0-TC3 are offset by 32 queues each
4281 */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004282 adapter->tx_ring[0]->reg_idx = 0;
4283 adapter->tx_ring[1]->reg_idx = 64;
4284 adapter->tx_ring[2]->reg_idx = 96;
4285 adapter->tx_ring[3]->reg_idx = 112;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004286 for (i = 0 ; i < dcb_i; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004287 adapter->rx_ring[i]->reg_idx = i << 5;
PJ Waskiewiczf92ef202009-04-16 15:00:20 +00004288
4289 ret = true;
4290 } else {
4291 ret = false;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004292 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004293 } else {
4294 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004295 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004296 } else {
4297 ret = false;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004298 }
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004299
4300 return ret;
4301}
4302#endif
4303
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004304/**
4305 * ixgbe_cache_ring_fdir - Descriptor ring to register mapping for Flow Director
4306 * @adapter: board private structure to initialize
4307 *
4308 * Cache the descriptor ring offsets for Flow Director to the assigned rings.
4309 *
4310 **/
Joe Perchese8e9f692010-09-07 21:34:53 +00004311static inline bool ixgbe_cache_ring_fdir(struct ixgbe_adapter *adapter)
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004312{
4313 int i;
4314 bool ret = false;
4315
4316 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED &&
4317 ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4318 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))) {
4319 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004320 adapter->rx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004321 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004322 adapter->tx_ring[i]->reg_idx = i;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004323 ret = true;
4324 }
4325
4326 return ret;
4327}
4328
Yi Zou0331a832009-05-17 12:33:52 +00004329#ifdef IXGBE_FCOE
4330/**
4331 * ixgbe_cache_ring_fcoe - Descriptor ring to register mapping for the FCoE
4332 * @adapter: board private structure to initialize
4333 *
4334 * Cache the descriptor ring offsets for FCoE mode to the assigned rings.
4335 *
4336 */
4337static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
4338{
Yi Zou8de8b2e2009-09-03 14:55:50 +00004339 int i, fcoe_rx_i = 0, fcoe_tx_i = 0;
Yi Zou0331a832009-05-17 12:33:52 +00004340 bool ret = false;
4341 struct ixgbe_ring_feature *f = &adapter->ring_feature[RING_F_FCOE];
4342
4343 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
4344#ifdef CONFIG_IXGBE_DCB
4345 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
Yi Zou8de8b2e2009-09-03 14:55:50 +00004346 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
4347
Yi Zou0331a832009-05-17 12:33:52 +00004348 ixgbe_cache_ring_dcb(adapter);
Yi Zou8de8b2e2009-09-03 14:55:50 +00004349 /* find out queues in TC for FCoE */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004350 fcoe_rx_i = adapter->rx_ring[fcoe->tc]->reg_idx + 1;
4351 fcoe_tx_i = adapter->tx_ring[fcoe->tc]->reg_idx + 1;
Yi Zou8de8b2e2009-09-03 14:55:50 +00004352 /*
4353 * In 82599, the number of Tx queues for each traffic
4354 * class for both 8-TC and 4-TC modes are:
4355 * TCs : TC0 TC1 TC2 TC3 TC4 TC5 TC6 TC7
4356 * 8 TCs: 32 32 16 16 8 8 8 8
4357 * 4 TCs: 64 64 32 32
4358 * We have max 8 queues for FCoE, where 8 the is
4359 * FCoE redirection table size. If TC for FCoE is
4360 * less than or equal to TC3, we have enough queues
4361 * to add max of 8 queues for FCoE, so we start FCoE
4362 * tx descriptor from the next one, i.e., reg_idx + 1.
4363 * If TC for FCoE is above TC3, implying 8 TC mode,
4364 * and we need 8 for FCoE, we have to take all queues
4365 * in that traffic class for FCoE.
4366 */
4367 if ((f->indices == IXGBE_FCRETA_SIZE) && (fcoe->tc > 3))
4368 fcoe_tx_i--;
Yi Zou0331a832009-05-17 12:33:52 +00004369 }
4370#endif /* CONFIG_IXGBE_DCB */
4371 if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
Yi Zou8faa2a72009-07-09 02:29:50 +00004372 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
4373 (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
4374 ixgbe_cache_ring_fdir(adapter);
4375 else
4376 ixgbe_cache_ring_rss(adapter);
4377
Yi Zou8de8b2e2009-09-03 14:55:50 +00004378 fcoe_rx_i = f->mask;
4379 fcoe_tx_i = f->mask;
Yi Zou0331a832009-05-17 12:33:52 +00004380 }
Yi Zou8de8b2e2009-09-03 14:55:50 +00004381 for (i = 0; i < f->indices; i++, fcoe_rx_i++, fcoe_tx_i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004382 adapter->rx_ring[f->mask + i]->reg_idx = fcoe_rx_i;
4383 adapter->tx_ring[f->mask + i]->reg_idx = fcoe_tx_i;
Yi Zou8de8b2e2009-09-03 14:55:50 +00004384 }
Yi Zou0331a832009-05-17 12:33:52 +00004385 ret = true;
4386 }
4387 return ret;
4388}
4389
4390#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004391/**
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004392 * ixgbe_cache_ring_sriov - Descriptor ring to register mapping for sriov
4393 * @adapter: board private structure to initialize
4394 *
4395 * SR-IOV doesn't use any descriptor rings but changes the default if
4396 * no other mapping is used.
4397 *
4398 */
4399static inline bool ixgbe_cache_ring_sriov(struct ixgbe_adapter *adapter)
4400{
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004401 adapter->rx_ring[0]->reg_idx = adapter->num_vfs * 2;
4402 adapter->tx_ring[0]->reg_idx = adapter->num_vfs * 2;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004403 if (adapter->num_vfs)
4404 return true;
4405 else
4406 return false;
4407}
4408
4409/**
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004410 * ixgbe_cache_ring_register - Descriptor ring to register mapping
4411 * @adapter: board private structure to initialize
4412 *
4413 * Once we know the feature-set enabled for the device, we'll cache
4414 * the register offset the descriptor ring is assigned to.
4415 *
4416 * Note, the order the various feature calls is important. It must start with
4417 * the "most" features enabled at the same time, then trickle down to the
4418 * least amount of features turned on at once.
4419 **/
4420static void ixgbe_cache_ring_register(struct ixgbe_adapter *adapter)
4421{
4422 /* start with default case */
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004423 adapter->rx_ring[0]->reg_idx = 0;
4424 adapter->tx_ring[0]->reg_idx = 0;
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004425
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004426 if (ixgbe_cache_ring_sriov(adapter))
4427 return;
4428
Yi Zou0331a832009-05-17 12:33:52 +00004429#ifdef IXGBE_FCOE
4430 if (ixgbe_cache_ring_fcoe(adapter))
4431 return;
4432
4433#endif /* IXGBE_FCOE */
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004434#ifdef CONFIG_IXGBE_DCB
4435 if (ixgbe_cache_ring_dcb(adapter))
4436 return;
4437
4438#endif
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004439 if (ixgbe_cache_ring_fdir(adapter))
4440 return;
4441
Peter P Waskiewicz Jrbc971142009-02-05 23:53:59 -08004442 if (ixgbe_cache_ring_rss(adapter))
4443 return;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004444}
4445
Auke Kok9a799d72007-09-15 14:07:45 -07004446/**
4447 * ixgbe_alloc_queues - Allocate memory for all rings
4448 * @adapter: board private structure to initialize
4449 *
4450 * We allocate one ring per queue at run-time since we don't know the
Jesse Brandeburg4df10462009-03-13 22:15:31 +00004451 * number of queues at compile-time. The polling_netdev array is
4452 * intended for Multiqueue, but should work fine with a single queue.
Auke Kok9a799d72007-09-15 14:07:45 -07004453 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08004454static int ixgbe_alloc_queues(struct ixgbe_adapter *adapter)
Auke Kok9a799d72007-09-15 14:07:45 -07004455{
4456 int i;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004457 int orig_node = adapter->node;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004458
4459 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004460 struct ixgbe_ring *ring = adapter->tx_ring[i];
4461 if (orig_node == -1) {
4462 int cur_node = next_online_node(adapter->node);
4463 if (cur_node == MAX_NUMNODES)
4464 cur_node = first_online_node;
4465 adapter->node = cur_node;
4466 }
4467 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
Joe Perchese8e9f692010-09-07 21:34:53 +00004468 adapter->node);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004469 if (!ring)
4470 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4471 if (!ring)
4472 goto err_tx_ring_allocation;
4473 ring->count = adapter->tx_ring_count;
4474 ring->queue_index = i;
4475 ring->numa_node = adapter->node;
4476
4477 adapter->tx_ring[i] = ring;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004478 }
Jesse Brandeburgb9804972008-09-11 20:00:29 -07004479
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004480 /* Restore the adapter's original node */
4481 adapter->node = orig_node;
4482
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004483 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004484 struct ixgbe_ring *ring = adapter->rx_ring[i];
4485 if (orig_node == -1) {
4486 int cur_node = next_online_node(adapter->node);
4487 if (cur_node == MAX_NUMNODES)
4488 cur_node = first_online_node;
4489 adapter->node = cur_node;
4490 }
4491 ring = kzalloc_node(sizeof(struct ixgbe_ring), GFP_KERNEL,
Joe Perchese8e9f692010-09-07 21:34:53 +00004492 adapter->node);
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004493 if (!ring)
4494 ring = kzalloc(sizeof(struct ixgbe_ring), GFP_KERNEL);
4495 if (!ring)
4496 goto err_rx_ring_allocation;
4497 ring->count = adapter->rx_ring_count;
4498 ring->queue_index = i;
4499 ring->numa_node = adapter->node;
4500
4501 adapter->rx_ring[i] = ring;
Auke Kok9a799d72007-09-15 14:07:45 -07004502 }
4503
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004504 /* Restore the adapter's original node */
4505 adapter->node = orig_node;
4506
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004507 ixgbe_cache_ring_register(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004508
4509 return 0;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004510
4511err_rx_ring_allocation:
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004512 for (i = 0; i < adapter->num_tx_queues; i++)
4513 kfree(adapter->tx_ring[i]);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004514err_tx_ring_allocation:
4515 return -ENOMEM;
4516}
4517
4518/**
4519 * ixgbe_set_interrupt_capability - set MSI-X or MSI if supported
4520 * @adapter: board private structure to initialize
4521 *
4522 * Attempt to configure the interrupts using the best available
4523 * capabilities of the hardware and the kernel.
4524 **/
Al Virofeea6a52008-11-27 15:34:07 -08004525static int ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004526{
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00004527 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004528 int err = 0;
4529 int vector, v_budget;
4530
4531 /*
4532 * It's easy to be greedy for MSI-X vectors, but it really
4533 * doesn't do us much good if we have a lot more vectors
4534 * than CPU's. So let's be conservative and only ask for
PJ Waskiewicz342bde12009-11-12 23:50:43 +00004535 * (roughly) the same number of vectors as there are CPU's.
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004536 */
4537 v_budget = min(adapter->num_rx_queues + adapter->num_tx_queues,
Joe Perchese8e9f692010-09-07 21:34:53 +00004538 (int)num_online_cpus()) + NON_Q_VECTORS;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004539
4540 /*
4541 * At the same time, hardware can only support a maximum of
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00004542 * hw.mac->max_msix_vectors vectors. With features
4543 * such as RSS and VMDq, we can easily surpass the number of Rx and Tx
4544 * descriptor queues supported by our device. Thus, we cap it off in
4545 * those rare cases where the cpu count also exceeds our vector limit.
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004546 */
PJ Waskiewicz8be0e462009-03-31 21:34:05 +00004547 v_budget = min(v_budget, (int)hw->mac.max_msix_vectors);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004548
4549 /* A failure in MSI-X entry allocation isn't fatal, but it does
4550 * mean we disable MSI-X capabilities of the adapter. */
4551 adapter->msix_entries = kcalloc(v_budget,
Joe Perchese8e9f692010-09-07 21:34:53 +00004552 sizeof(struct msix_entry), GFP_KERNEL);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004553 if (adapter->msix_entries) {
4554 for (vector = 0; vector < v_budget; vector++)
4555 adapter->msix_entries[vector].entry = vector;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004556
Alexander Duyck7a921c92009-05-06 10:43:28 +00004557 ixgbe_acquire_msix_vectors(adapter, v_budget);
4558
4559 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
4560 goto out;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004561 }
David S. Miller26d27842010-05-03 15:18:22 -07004562
Alexander Duyck7a921c92009-05-06 10:43:28 +00004563 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
4564 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004565 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
4566 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4567 adapter->atr_sample_rate = 0;
Greg Rose1cdd1ec2010-01-09 02:26:46 +00004568 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4569 ixgbe_disable_sriov(adapter);
4570
Ben Hutchings847f53f2010-09-27 08:28:56 +00004571 err = ixgbe_set_num_queues(adapter);
4572 if (err)
4573 return err;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004574
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004575 err = pci_enable_msi(adapter->pdev);
4576 if (!err) {
4577 adapter->flags |= IXGBE_FLAG_MSI_ENABLED;
4578 } else {
Emil Tantilov849c4542010-06-03 16:53:41 +00004579 netif_printk(adapter, hw, KERN_DEBUG, adapter->netdev,
4580 "Unable to allocate MSI interrupt, "
4581 "falling back to legacy. Error: %d\n", err);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004582 /* reset err */
4583 err = 0;
4584 }
4585
4586out:
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004587 return err;
4588}
4589
Alexander Duyck7a921c92009-05-06 10:43:28 +00004590/**
4591 * ixgbe_alloc_q_vectors - Allocate memory for interrupt vectors
4592 * @adapter: board private structure to initialize
4593 *
4594 * We allocate one q_vector per queue interrupt. If allocation fails we
4595 * return -ENOMEM.
4596 **/
4597static int ixgbe_alloc_q_vectors(struct ixgbe_adapter *adapter)
4598{
4599 int q_idx, num_q_vectors;
4600 struct ixgbe_q_vector *q_vector;
4601 int napi_vectors;
4602 int (*poll)(struct napi_struct *, int);
4603
4604 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4605 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
4606 napi_vectors = adapter->num_rx_queues;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004607 poll = &ixgbe_clean_rxtx_many;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004608 } else {
4609 num_q_vectors = 1;
4610 napi_vectors = 1;
4611 poll = &ixgbe_poll;
4612 }
4613
4614 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004615 q_vector = kzalloc_node(sizeof(struct ixgbe_q_vector),
Joe Perchese8e9f692010-09-07 21:34:53 +00004616 GFP_KERNEL, adapter->node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004617 if (!q_vector)
4618 q_vector = kzalloc(sizeof(struct ixgbe_q_vector),
Joe Perchese8e9f692010-09-07 21:34:53 +00004619 GFP_KERNEL);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004620 if (!q_vector)
4621 goto err_out;
4622 q_vector->adapter = adapter;
Nelson, Shannonf7554a22009-09-18 09:46:06 +00004623 if (q_vector->txr_count && !q_vector->rxr_count)
4624 q_vector->eitr = adapter->tx_eitr_param;
4625 else
4626 q_vector->eitr = adapter->rx_eitr_param;
Alexander Duyckfe49f042009-06-04 16:00:09 +00004627 q_vector->v_idx = q_idx;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004628 netif_napi_add(adapter->netdev, &q_vector->napi, (*poll), 64);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004629 adapter->q_vector[q_idx] = q_vector;
4630 }
4631
4632 return 0;
4633
4634err_out:
4635 while (q_idx) {
4636 q_idx--;
4637 q_vector = adapter->q_vector[q_idx];
4638 netif_napi_del(&q_vector->napi);
4639 kfree(q_vector);
4640 adapter->q_vector[q_idx] = NULL;
4641 }
4642 return -ENOMEM;
4643}
4644
4645/**
4646 * ixgbe_free_q_vectors - Free memory allocated for interrupt vectors
4647 * @adapter: board private structure to initialize
4648 *
4649 * This function frees the memory allocated to the q_vectors. In addition if
4650 * NAPI is enabled it will delete any references to the NAPI struct prior
4651 * to freeing the q_vector.
4652 **/
4653static void ixgbe_free_q_vectors(struct ixgbe_adapter *adapter)
4654{
4655 int q_idx, num_q_vectors;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004656
Alexander Duyck91281fd2009-06-04 16:00:27 +00004657 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
Alexander Duyck7a921c92009-05-06 10:43:28 +00004658 num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004659 else
Alexander Duyck7a921c92009-05-06 10:43:28 +00004660 num_q_vectors = 1;
Alexander Duyck7a921c92009-05-06 10:43:28 +00004661
4662 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
4663 struct ixgbe_q_vector *q_vector = adapter->q_vector[q_idx];
Alexander Duyck7a921c92009-05-06 10:43:28 +00004664 adapter->q_vector[q_idx] = NULL;
Alexander Duyck91281fd2009-06-04 16:00:27 +00004665 netif_napi_del(&q_vector->napi);
Alexander Duyck7a921c92009-05-06 10:43:28 +00004666 kfree(q_vector);
4667 }
4668}
4669
Don Skidmore7b25cdb2009-08-25 04:47:32 +00004670static void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004671{
4672 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
4673 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
4674 pci_disable_msix(adapter->pdev);
4675 kfree(adapter->msix_entries);
4676 adapter->msix_entries = NULL;
4677 } else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) {
4678 adapter->flags &= ~IXGBE_FLAG_MSI_ENABLED;
4679 pci_disable_msi(adapter->pdev);
4680 }
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004681}
4682
4683/**
4684 * ixgbe_init_interrupt_scheme - Determine proper interrupt scheme
4685 * @adapter: board private structure to initialize
4686 *
4687 * We determine which interrupt scheme to use based on...
4688 * - Kernel support (MSI, MSI-X)
4689 * - which can be user-defined (via MODULE_PARAM)
4690 * - Hardware queue count (num_*_queues)
4691 * - defined by miscellaneous hardware support/features (RSS, etc.)
4692 **/
Alexander Duyck2f90b862008-11-20 20:52:10 -08004693int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter)
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004694{
4695 int err;
4696
4697 /* Number of supported queues */
Ben Hutchings847f53f2010-09-27 08:28:56 +00004698 err = ixgbe_set_num_queues(adapter);
4699 if (err)
4700 return err;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004701
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004702 err = ixgbe_set_interrupt_capability(adapter);
4703 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00004704 e_dev_err("Unable to setup interrupt capabilities\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004705 goto err_set_interrupt;
4706 }
4707
Alexander Duyck7a921c92009-05-06 10:43:28 +00004708 err = ixgbe_alloc_q_vectors(adapter);
4709 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00004710 e_dev_err("Unable to allocate memory for queue vectors\n");
Alexander Duyck7a921c92009-05-06 10:43:28 +00004711 goto err_alloc_q_vectors;
4712 }
4713
4714 err = ixgbe_alloc_queues(adapter);
4715 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00004716 e_dev_err("Unable to allocate memory for queues\n");
Alexander Duyck7a921c92009-05-06 10:43:28 +00004717 goto err_alloc_queues;
4718 }
4719
Emil Tantilov849c4542010-06-03 16:53:41 +00004720 e_dev_info("Multiqueue %s: Rx Queue count = %u, Tx Queue count = %u\n",
Emil Tantilov396e7992010-07-01 20:05:12 +00004721 (adapter->num_rx_queues > 1) ? "Enabled" : "Disabled",
4722 adapter->num_rx_queues, adapter->num_tx_queues);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004723
4724 set_bit(__IXGBE_DOWN, &adapter->state);
4725
4726 return 0;
4727
Alexander Duyck7a921c92009-05-06 10:43:28 +00004728err_alloc_queues:
4729 ixgbe_free_q_vectors(adapter);
4730err_alloc_q_vectors:
4731 ixgbe_reset_interrupt_capability(adapter);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004732err_set_interrupt:
Alexander Duyck7a921c92009-05-06 10:43:28 +00004733 return err;
4734}
4735
4736/**
4737 * ixgbe_clear_interrupt_scheme - Clear the current interrupt scheme settings
4738 * @adapter: board private structure to clear interrupt scheme on
4739 *
4740 * We go through and clear interrupt specific resources and reset the structure
4741 * to pre-load conditions
4742 **/
4743void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter)
4744{
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004745 int i;
4746
4747 for (i = 0; i < adapter->num_tx_queues; i++) {
4748 kfree(adapter->tx_ring[i]);
4749 adapter->tx_ring[i] = NULL;
4750 }
4751 for (i = 0; i < adapter->num_rx_queues; i++) {
4752 kfree(adapter->rx_ring[i]);
4753 adapter->rx_ring[i] = NULL;
4754 }
Alexander Duyck7a921c92009-05-06 10:43:28 +00004755
4756 ixgbe_free_q_vectors(adapter);
4757 ixgbe_reset_interrupt_capability(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07004758}
4759
4760/**
Donald Skidmorec4900be2008-11-20 21:11:42 -08004761 * ixgbe_sfp_timer - worker thread to find a missing module
4762 * @data: pointer to our adapter struct
4763 **/
4764static void ixgbe_sfp_timer(unsigned long data)
4765{
4766 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
4767
Jesse Brandeburg4df10462009-03-13 22:15:31 +00004768 /*
4769 * Do the sfp_timer outside of interrupt context due to the
Donald Skidmorec4900be2008-11-20 21:11:42 -08004770 * delays that sfp+ detection requires
4771 */
4772 schedule_work(&adapter->sfp_task);
4773}
4774
4775/**
4776 * ixgbe_sfp_task - worker thread to find a missing module
4777 * @work: pointer to work_struct containing our data
4778 **/
4779static void ixgbe_sfp_task(struct work_struct *work)
4780{
4781 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00004782 struct ixgbe_adapter,
4783 sfp_task);
Donald Skidmorec4900be2008-11-20 21:11:42 -08004784 struct ixgbe_hw *hw = &adapter->hw;
4785
4786 if ((hw->phy.type == ixgbe_phy_nl) &&
4787 (hw->phy.sfp_type == ixgbe_sfp_type_not_present)) {
4788 s32 ret = hw->phy.ops.identify_sfp(hw);
Don Skidmore63d6e1d2009-07-02 12:50:12 +00004789 if (ret == IXGBE_ERR_SFP_NOT_PRESENT)
Donald Skidmorec4900be2008-11-20 21:11:42 -08004790 goto reschedule;
4791 ret = hw->phy.ops.reset(hw);
4792 if (ret == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Emil Tantilov849c4542010-06-03 16:53:41 +00004793 e_dev_err("failed to initialize because an unsupported "
4794 "SFP+ module type was detected.\n");
4795 e_dev_err("Reload the driver after installing a "
4796 "supported module.\n");
Donald Skidmorec4900be2008-11-20 21:11:42 -08004797 unregister_netdev(adapter->netdev);
4798 } else {
Emil Tantilov396e7992010-07-01 20:05:12 +00004799 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
Donald Skidmorec4900be2008-11-20 21:11:42 -08004800 }
4801 /* don't need this routine any more */
4802 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
4803 }
4804 return;
4805reschedule:
4806 if (test_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state))
4807 mod_timer(&adapter->sfp_timer,
Joe Perchese8e9f692010-09-07 21:34:53 +00004808 round_jiffies(jiffies + (2 * HZ)));
Donald Skidmorec4900be2008-11-20 21:11:42 -08004809}
4810
4811/**
Auke Kok9a799d72007-09-15 14:07:45 -07004812 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
4813 * @adapter: board private structure to initialize
4814 *
4815 * ixgbe_sw_init initializes the Adapter private data structure.
4816 * Fields are initialized based on PCI device information and
4817 * OS network device settings (MTU size).
4818 **/
4819static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
4820{
4821 struct ixgbe_hw *hw = &adapter->hw;
4822 struct pci_dev *pdev = adapter->pdev;
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00004823 struct net_device *dev = adapter->netdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004824 unsigned int rss;
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004825#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08004826 int j;
4827 struct tc_configuration *tc;
4828#endif
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004829
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004830 /* PCI config space info */
4831
4832 hw->vendor_id = pdev->vendor;
4833 hw->device_id = pdev->device;
4834 hw->revision_id = pdev->revision;
4835 hw->subsystem_vendor_id = pdev->subsystem_vendor;
4836 hw->subsystem_device_id = pdev->subsystem_device;
4837
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004838 /* Set capability flags */
4839 rss = min(IXGBE_MAX_RSS_INDICES, (int)num_online_cpus());
4840 adapter->ring_feature[RING_F_RSS].indices = rss;
4841 adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004842 adapter->ring_feature[RING_F_DCB].indices = IXGBE_MAX_DCB_INDICES;
Don Skidmorebf069c92009-05-07 10:39:54 +00004843 if (hw->mac.type == ixgbe_mac_82598EB) {
4844 if (hw->device_id == IXGBE_DEV_ID_82598AT)
4845 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004846 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82598;
Don Skidmorebf069c92009-05-07 10:39:54 +00004847 } else if (hw->mac.type == ixgbe_mac_82599EB) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00004848 adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00004849 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
4850 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07004851 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
4852 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
Peter Waskiewicz9a713e72010-02-10 16:07:54 +00004853 if (dev->features & NETIF_F_NTUPLE) {
4854 /* Flow Director perfect filter enabled */
4855 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
4856 adapter->atr_sample_rate = 0;
4857 spin_lock_init(&adapter->fdir_perfect_lock);
4858 } else {
4859 /* Flow Director hash filters enabled */
4860 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
4861 adapter->atr_sample_rate = 20;
4862 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004863 adapter->ring_feature[RING_F_FDIR].indices =
Joe Perchese8e9f692010-09-07 21:34:53 +00004864 IXGBE_MAX_FDIR_INDICES;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00004865 adapter->fdir_pballoc = 0;
Yi Zoueacd73f2009-05-13 13:11:06 +00004866#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +00004867 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
4868 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
4869 adapter->ring_feature[RING_F_FCOE].indices = 0;
Yi Zou61a0f422009-12-03 11:32:22 +00004870#ifdef CONFIG_IXGBE_DCB
Yi Zou6ee16522009-08-31 12:34:28 +00004871 /* Default traffic class to use for FCoE */
4872 adapter->fcoe.tc = IXGBE_FCOE_DEFTC;
John Fastabend56075a92010-07-26 20:41:31 +00004873 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
Yi Zou61a0f422009-12-03 11:32:22 +00004874#endif
Yi Zoueacd73f2009-05-13 13:11:06 +00004875#endif /* IXGBE_FCOE */
Alexander Duyckf8212f92009-04-27 22:42:37 +00004876 }
Alexander Duyck2f90b862008-11-20 20:52:10 -08004877
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08004878#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08004879 /* Configure DCB traffic classes */
4880 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
4881 tc = &adapter->dcb_cfg.tc_config[j];
4882 tc->path[DCB_TX_CONFIG].bwg_id = 0;
4883 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
4884 tc->path[DCB_RX_CONFIG].bwg_id = 0;
4885 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
4886 tc->dcb_pfc = pfc_disabled;
4887 }
4888 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
4889 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
4890 adapter->dcb_cfg.rx_pba_cfg = pba_equal;
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00004891 adapter->dcb_cfg.pfc_mode_enable = false;
Alexander Duyck2f90b862008-11-20 20:52:10 -08004892 adapter->dcb_cfg.round_robin_enable = false;
4893 adapter->dcb_set_bitmap = 0x00;
4894 ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg,
Joe Perchese8e9f692010-09-07 21:34:53 +00004895 adapter->ring_feature[RING_F_DCB].indices);
Alexander Duyck2f90b862008-11-20 20:52:10 -08004896
4897#endif
Auke Kok9a799d72007-09-15 14:07:45 -07004898
4899 /* default flow control settings */
Don Skidmorecd7664f2009-03-31 21:33:44 +00004900 hw->fc.requested_mode = ixgbe_fc_full;
Don Skidmore71fd5702009-03-31 21:35:05 +00004901 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00004902#ifdef CONFIG_DCB
4903 adapter->last_lfc_mode = hw->fc.current_mode;
4904#endif
Jesse Brandeburg2b9ade92008-08-26 04:27:10 -07004905 hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
4906 hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
4907 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
4908 hw->fc.send_xon = true;
Don Skidmore71fd5702009-03-31 21:35:05 +00004909 hw->fc.disable_fc_autoneg = false;
Auke Kok9a799d72007-09-15 14:07:45 -07004910
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07004911 /* enable itr by default in dynamic mode */
Nelson, Shannonf7554a22009-09-18 09:46:06 +00004912 adapter->rx_itr_setting = 1;
4913 adapter->rx_eitr_param = 20000;
4914 adapter->tx_itr_setting = 1;
4915 adapter->tx_eitr_param = 10000;
Jesse Brandeburg30efa5a2008-09-11 19:58:14 -07004916
4917 /* set defaults for eitr in MegaBytes */
4918 adapter->eitr_low = 10;
4919 adapter->eitr_high = 20;
4920
4921 /* set default ring sizes */
4922 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
4923 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
4924
Auke Kok9a799d72007-09-15 14:07:45 -07004925 /* initialize eeprom parameters */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07004926 if (ixgbe_init_eeprom_params_generic(hw)) {
Emil Tantilov849c4542010-06-03 16:53:41 +00004927 e_dev_err("EEPROM initialization failed\n");
Auke Kok9a799d72007-09-15 14:07:45 -07004928 return -EIO;
4929 }
4930
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08004931 /* enable rx csum by default */
Auke Kok9a799d72007-09-15 14:07:45 -07004932 adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
4933
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004934 /* get assigned NUMA node */
4935 adapter->node = dev_to_node(&pdev->dev);
4936
Auke Kok9a799d72007-09-15 14:07:45 -07004937 set_bit(__IXGBE_DOWN, &adapter->state);
4938
4939 return 0;
4940}
4941
4942/**
4943 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
4944 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004945 * @tx_ring: tx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07004946 *
4947 * Return 0 on success, negative on failure
4948 **/
4949int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00004950 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07004951{
4952 struct pci_dev *pdev = adapter->pdev;
4953 int size;
4954
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004955 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004956 tx_ring->tx_buffer_info = vmalloc_node(size, tx_ring->numa_node);
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00004957 if (!tx_ring->tx_buffer_info)
4958 tx_ring->tx_buffer_info = vmalloc(size);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004959 if (!tx_ring->tx_buffer_info)
4960 goto err;
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004961 memset(tx_ring->tx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07004962
4963 /* round up to nearest 4K */
Peter P Waskiewicz Jr12207e42009-02-06 21:47:24 -08004964 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004965 tx_ring->size = ALIGN(tx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07004966
Nick Nunley1b507732010-04-27 13:10:27 +00004967 tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
4968 &tx_ring->dma, GFP_KERNEL);
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004969 if (!tx_ring->desc)
4970 goto err;
Auke Kok9a799d72007-09-15 14:07:45 -07004971
Jesse Brandeburg3a581072008-08-26 04:27:08 -07004972 tx_ring->next_to_use = 0;
4973 tx_ring->next_to_clean = 0;
4974 tx_ring->work_limit = tx_ring->count;
Auke Kok9a799d72007-09-15 14:07:45 -07004975 return 0;
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004976
4977err:
4978 vfree(tx_ring->tx_buffer_info);
4979 tx_ring->tx_buffer_info = NULL;
Emil Tantilov396e7992010-07-01 20:05:12 +00004980 e_err(probe, "Unable to allocate memory for the Tx descriptor ring\n");
Jesse Brandeburge01c31a2008-08-26 04:27:13 -07004981 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07004982}
4983
4984/**
Alexander Duyck69888672008-09-11 20:05:39 -07004985 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
4986 * @adapter: board private structure
4987 *
4988 * If this function returns with an error, then it's possible one or
4989 * more of the rings is populated (while the rest are not). It is the
4990 * callers duty to clean those orphaned rings.
4991 *
4992 * Return 0 on success, negative on failure
4993 **/
4994static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
4995{
4996 int i, err = 0;
4997
4998 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00004999 err = ixgbe_setup_tx_resources(adapter, adapter->tx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005000 if (!err)
5001 continue;
Emil Tantilov396e7992010-07-01 20:05:12 +00005002 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
Alexander Duyck69888672008-09-11 20:05:39 -07005003 break;
5004 }
5005
5006 return err;
5007}
5008
5009/**
Auke Kok9a799d72007-09-15 14:07:45 -07005010 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
5011 * @adapter: board private structure
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005012 * @rx_ring: rx descriptor ring (for a specific queue) to setup
Auke Kok9a799d72007-09-15 14:07:45 -07005013 *
5014 * Returns 0 on success, negative on failure
5015 **/
5016int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005017 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005018{
5019 struct pci_dev *pdev = adapter->pdev;
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005020 int size;
Auke Kok9a799d72007-09-15 14:07:45 -07005021
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005022 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
Jesse Brandeburg1a6c14a2010-02-03 14:18:50 +00005023 rx_ring->rx_buffer_info = vmalloc_node(size, adapter->node);
5024 if (!rx_ring->rx_buffer_info)
5025 rx_ring->rx_buffer_info = vmalloc(size);
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005026 if (!rx_ring->rx_buffer_info) {
Emil Tantilov396e7992010-07-01 20:05:12 +00005027 e_err(probe, "vmalloc allocation failed for the Rx "
5028 "descriptor ring\n");
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07005029 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07005030 }
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005031 memset(rx_ring->rx_buffer_info, 0, size);
Auke Kok9a799d72007-09-15 14:07:45 -07005032
Auke Kok9a799d72007-09-15 14:07:45 -07005033 /* Round up to nearest 4K */
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005034 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5035 rx_ring->size = ALIGN(rx_ring->size, 4096);
Auke Kok9a799d72007-09-15 14:07:45 -07005036
Nick Nunley1b507732010-04-27 13:10:27 +00005037 rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
5038 &rx_ring->dma, GFP_KERNEL);
Auke Kok9a799d72007-09-15 14:07:45 -07005039
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005040 if (!rx_ring->desc) {
Emil Tantilov396e7992010-07-01 20:05:12 +00005041 e_err(probe, "Memory allocation failed for the Rx "
5042 "descriptor ring\n");
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005043 vfree(rx_ring->rx_buffer_info);
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07005044 goto alloc_failed;
Auke Kok9a799d72007-09-15 14:07:45 -07005045 }
5046
Jesse Brandeburg3a581072008-08-26 04:27:08 -07005047 rx_ring->next_to_clean = 0;
5048 rx_ring->next_to_use = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005049
5050 return 0;
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07005051
5052alloc_failed:
Mallikarjuna R Chilakala177db6f2008-06-18 15:32:19 -07005053 return -ENOMEM;
Auke Kok9a799d72007-09-15 14:07:45 -07005054}
5055
5056/**
Alexander Duyck69888672008-09-11 20:05:39 -07005057 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5058 * @adapter: board private structure
5059 *
5060 * If this function returns with an error, then it's possible one or
5061 * more of the rings is populated (while the rest are not). It is the
5062 * callers duty to clean those orphaned rings.
5063 *
5064 * Return 0 on success, negative on failure
5065 **/
5066
5067static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5068{
5069 int i, err = 0;
5070
5071 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005072 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]);
Alexander Duyck69888672008-09-11 20:05:39 -07005073 if (!err)
5074 continue;
Emil Tantilov396e7992010-07-01 20:05:12 +00005075 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
Alexander Duyck69888672008-09-11 20:05:39 -07005076 break;
5077 }
5078
5079 return err;
5080}
5081
5082/**
Auke Kok9a799d72007-09-15 14:07:45 -07005083 * ixgbe_free_tx_resources - Free Tx Resources per Queue
5084 * @adapter: board private structure
5085 * @tx_ring: Tx descriptor ring for a specific queue
5086 *
5087 * Free all transmit software resources
5088 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07005089void ixgbe_free_tx_resources(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005090 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005091{
5092 struct pci_dev *pdev = adapter->pdev;
5093
5094 ixgbe_clean_tx_ring(adapter, tx_ring);
5095
5096 vfree(tx_ring->tx_buffer_info);
5097 tx_ring->tx_buffer_info = NULL;
5098
Nick Nunley1b507732010-04-27 13:10:27 +00005099 dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
5100 tx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07005101
5102 tx_ring->desc = NULL;
5103}
5104
5105/**
5106 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5107 * @adapter: board private structure
5108 *
5109 * Free all transmit software resources
5110 **/
5111static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
5112{
5113 int i;
5114
5115 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005116 if (adapter->tx_ring[i]->desc)
5117 ixgbe_free_tx_resources(adapter, adapter->tx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005118}
5119
5120/**
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07005121 * ixgbe_free_rx_resources - Free Rx Resources
Auke Kok9a799d72007-09-15 14:07:45 -07005122 * @adapter: board private structure
5123 * @rx_ring: ring to clean the resources from
5124 *
5125 * Free all receive software resources
5126 **/
Jesse Brandeburgc431f972008-09-11 19:59:16 -07005127void ixgbe_free_rx_resources(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005128 struct ixgbe_ring *rx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07005129{
5130 struct pci_dev *pdev = adapter->pdev;
5131
5132 ixgbe_clean_rx_ring(adapter, rx_ring);
5133
5134 vfree(rx_ring->rx_buffer_info);
5135 rx_ring->rx_buffer_info = NULL;
5136
Nick Nunley1b507732010-04-27 13:10:27 +00005137 dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
5138 rx_ring->dma);
Auke Kok9a799d72007-09-15 14:07:45 -07005139
5140 rx_ring->desc = NULL;
5141}
5142
5143/**
5144 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
5145 * @adapter: board private structure
5146 *
5147 * Free all receive software resources
5148 **/
5149static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
5150{
5151 int i;
5152
5153 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005154 if (adapter->rx_ring[i]->desc)
5155 ixgbe_free_rx_resources(adapter, adapter->rx_ring[i]);
Auke Kok9a799d72007-09-15 14:07:45 -07005156}
5157
5158/**
Auke Kok9a799d72007-09-15 14:07:45 -07005159 * ixgbe_change_mtu - Change the Maximum Transfer Unit
5160 * @netdev: network interface device structure
5161 * @new_mtu: new value for maximum frame size
5162 *
5163 * Returns 0 on success, negative on failure
5164 **/
5165static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
5166{
5167 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5168 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
5169
Jesse Brandeburg42c783c2008-09-11 19:56:28 -07005170 /* MTU < 68 is an error and causes problems on some kernels */
5171 if ((new_mtu < 68) || (max_frame > IXGBE_MAX_JUMBO_FRAME_SIZE))
Auke Kok9a799d72007-09-15 14:07:45 -07005172 return -EINVAL;
5173
Emil Tantilov396e7992010-07-01 20:05:12 +00005174 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005175 /* must set new MTU before calling down or up */
Auke Kok9a799d72007-09-15 14:07:45 -07005176 netdev->mtu = new_mtu;
5177
Ayyappan Veeraiyand4f80882008-02-01 15:58:41 -08005178 if (netif_running(netdev))
5179 ixgbe_reinit_locked(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005180
5181 return 0;
5182}
5183
5184/**
5185 * ixgbe_open - Called when a network interface is made active
5186 * @netdev: network interface device structure
5187 *
5188 * Returns 0 on success, negative value on failure
5189 *
5190 * The open entry point is called when a network interface is made
5191 * active by the system (IFF_UP). At this point all resources needed
5192 * for transmit and receive operations are allocated, the interrupt
5193 * handler is registered with the OS, the watchdog timer is started,
5194 * and the stack is notified that the interface is ready.
5195 **/
5196static int ixgbe_open(struct net_device *netdev)
5197{
5198 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5199 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07005200
Auke Kok4bebfaa2008-02-11 09:26:01 -08005201 /* disallow open during test */
5202 if (test_bit(__IXGBE_TESTING, &adapter->state))
5203 return -EBUSY;
5204
Jesse Brandeburg54386462009-04-17 20:44:27 +00005205 netif_carrier_off(netdev);
5206
Auke Kok9a799d72007-09-15 14:07:45 -07005207 /* allocate transmit descriptors */
5208 err = ixgbe_setup_all_tx_resources(adapter);
5209 if (err)
5210 goto err_setup_tx;
5211
Auke Kok9a799d72007-09-15 14:07:45 -07005212 /* allocate receive descriptors */
5213 err = ixgbe_setup_all_rx_resources(adapter);
5214 if (err)
5215 goto err_setup_rx;
5216
5217 ixgbe_configure(adapter);
5218
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08005219 err = ixgbe_request_irq(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005220 if (err)
5221 goto err_req_irq;
5222
Auke Kok9a799d72007-09-15 14:07:45 -07005223 err = ixgbe_up_complete(adapter);
5224 if (err)
5225 goto err_up;
5226
Jeff Kirsherd55b53f2008-07-18 04:33:03 -07005227 netif_tx_start_all_queues(netdev);
5228
Auke Kok9a799d72007-09-15 14:07:45 -07005229 return 0;
5230
5231err_up:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08005232 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005233 ixgbe_free_irq(adapter);
5234err_req_irq:
Auke Kok9a799d72007-09-15 14:07:45 -07005235err_setup_rx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00005236 ixgbe_free_all_rx_resources(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005237err_setup_tx:
Mallikarjuna R Chilakalaa20a1192009-03-31 21:34:44 +00005238 ixgbe_free_all_tx_resources(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005239 ixgbe_reset(adapter);
5240
5241 return err;
5242}
5243
5244/**
5245 * ixgbe_close - Disables a network interface
5246 * @netdev: network interface device structure
5247 *
5248 * Returns 0, this is not allowed to fail
5249 *
5250 * The close entry point is called when an interface is de-activated
5251 * by the OS. The hardware is still under the drivers control, but
5252 * needs to be disabled. A global MAC reset is issued to stop the
5253 * hardware, and all transmit and receive resources are freed.
5254 **/
5255static int ixgbe_close(struct net_device *netdev)
5256{
5257 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005258
5259 ixgbe_down(adapter);
5260 ixgbe_free_irq(adapter);
5261
5262 ixgbe_free_all_tx_resources(adapter);
5263 ixgbe_free_all_rx_resources(adapter);
5264
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08005265 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07005266
5267 return 0;
5268}
5269
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005270#ifdef CONFIG_PM
5271static int ixgbe_resume(struct pci_dev *pdev)
5272{
5273 struct net_device *netdev = pci_get_drvdata(pdev);
5274 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5275 u32 err;
5276
5277 pci_set_power_state(pdev, PCI_D0);
5278 pci_restore_state(pdev);
Don Skidmore656ab812009-12-23 21:19:19 -08005279 /*
5280 * pci_restore_state clears dev->state_saved so call
5281 * pci_save_state to restore it.
5282 */
5283 pci_save_state(pdev);
gouji-new9ce77662009-05-06 10:44:45 +00005284
5285 err = pci_enable_device_mem(pdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005286 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00005287 e_dev_err("Cannot enable PCI device from suspend\n");
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005288 return err;
5289 }
5290 pci_set_master(pdev);
5291
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07005292 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005293
5294 err = ixgbe_init_interrupt_scheme(adapter);
5295 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00005296 e_dev_err("Cannot initialize interrupts for device\n");
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005297 return err;
5298 }
5299
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005300 ixgbe_reset(adapter);
5301
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00005302 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
5303
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005304 if (netif_running(netdev)) {
5305 err = ixgbe_open(adapter->netdev);
5306 if (err)
5307 return err;
5308 }
5309
5310 netif_device_attach(netdev);
5311
5312 return 0;
5313}
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005314#endif /* CONFIG_PM */
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005315
5316static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005317{
5318 struct net_device *netdev = pci_get_drvdata(pdev);
5319 struct ixgbe_adapter *adapter = netdev_priv(netdev);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005320 struct ixgbe_hw *hw = &adapter->hw;
5321 u32 ctrl, fctrl;
5322 u32 wufc = adapter->wol;
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005323#ifdef CONFIG_PM
5324 int retval = 0;
5325#endif
5326
5327 netif_device_detach(netdev);
5328
5329 if (netif_running(netdev)) {
5330 ixgbe_down(adapter);
5331 ixgbe_free_irq(adapter);
5332 ixgbe_free_all_tx_resources(adapter);
5333 ixgbe_free_all_rx_resources(adapter);
5334 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005335
5336#ifdef CONFIG_PM
5337 retval = pci_save_state(pdev);
5338 if (retval)
5339 return retval;
Jesse Brandeburg4df10462009-03-13 22:15:31 +00005340
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005341#endif
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005342 if (wufc) {
5343 ixgbe_set_rx_mode(netdev);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005344
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005345 /* turn on all-multi mode if wake on multicast is enabled */
5346 if (wufc & IXGBE_WUFC_MC) {
5347 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5348 fctrl |= IXGBE_FCTRL_MPE;
5349 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
5350 }
5351
5352 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
5353 ctrl |= IXGBE_CTRL_GIO_DIS;
5354 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
5355
5356 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
5357 } else {
5358 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
5359 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
5360 }
5361
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07005362 if (wufc && hw->mac.type == ixgbe_mac_82599EB)
5363 pci_wake_from_d3(pdev, true);
5364 else
5365 pci_wake_from_d3(pdev, false);
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005366
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005367 *enable_wake = !!wufc;
5368
Andy Gospodarekfa378132010-06-29 18:28:12 +00005369 ixgbe_clear_interrupt_scheme(adapter);
5370
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005371 ixgbe_release_hw_control(adapter);
5372
5373 pci_disable_device(pdev);
5374
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005375 return 0;
5376}
5377
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005378#ifdef CONFIG_PM
5379static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
5380{
5381 int retval;
5382 bool wake;
5383
5384 retval = __ixgbe_shutdown(pdev, &wake);
5385 if (retval)
5386 return retval;
5387
5388 if (wake) {
5389 pci_prepare_to_sleep(pdev);
5390 } else {
5391 pci_wake_from_d3(pdev, false);
5392 pci_set_power_state(pdev, PCI_D3hot);
5393 }
5394
5395 return 0;
5396}
5397#endif /* CONFIG_PM */
5398
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005399static void ixgbe_shutdown(struct pci_dev *pdev)
5400{
Rafael J. Wysocki9d8d05a2009-04-15 17:44:01 +00005401 bool wake;
5402
5403 __ixgbe_shutdown(pdev, &wake);
5404
5405 if (system_state == SYSTEM_POWER_OFF) {
5406 pci_wake_from_d3(pdev, wake);
5407 pci_set_power_state(pdev, PCI_D3hot);
5408 }
Alexander Duyckb3c8b4b2008-09-11 20:04:56 -07005409}
5410
5411/**
Auke Kok9a799d72007-09-15 14:07:45 -07005412 * ixgbe_update_stats - Update the board statistics counters.
5413 * @adapter: board private structure
5414 **/
5415void ixgbe_update_stats(struct ixgbe_adapter *adapter)
5416{
Ajit Khaparde2d86f132009-10-07 02:43:49 +00005417 struct net_device *netdev = adapter->netdev;
Auke Kok9a799d72007-09-15 14:07:45 -07005418 struct ixgbe_hw *hw = &adapter->hw;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005419 u64 total_mpc = 0;
5420 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00005421 u64 non_eop_descs = 0, restart_queue = 0;
Joe Perches7ca647b2010-09-07 21:35:40 +00005422 struct ixgbe_hw_stats *hwstats = &adapter->stats;
Auke Kok9a799d72007-09-15 14:07:45 -07005423
Don Skidmored08935c2010-06-11 13:20:29 +00005424 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
5425 test_bit(__IXGBE_RESETTING, &adapter->state))
5426 return;
5427
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005428 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
Alexander Duyckf8212f92009-04-27 22:42:37 +00005429 u64 rsc_count = 0;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005430 u64 rsc_flush = 0;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00005431 for (i = 0; i < 16; i++)
5432 adapter->hw_rx_no_dma_resources +=
Joe Perches7ca647b2010-09-07 21:35:40 +00005433 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005434 for (i = 0; i < adapter->num_rx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005435 rsc_count += adapter->rx_ring[i]->rsc_count;
5436 rsc_flush += adapter->rx_ring[i]->rsc_flush;
Mallikarjuna R Chilakala94b982b2009-11-23 06:32:06 +00005437 }
5438 adapter->rsc_total_count = rsc_count;
5439 adapter->rsc_total_flush = rsc_flush;
PJ Waskiewiczd51019a2009-03-13 22:12:48 +00005440 }
5441
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00005442 /* gather some stats to the adapter struct that are per queue */
5443 for (i = 0; i < adapter->num_tx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005444 restart_queue += adapter->tx_ring[i]->restart_queue;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00005445 adapter->restart_queue = restart_queue;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00005446
5447 for (i = 0; i < adapter->num_rx_queues; i++)
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005448 non_eop_descs += adapter->rx_ring[i]->non_eop_descs;
Mallikarjuna R Chilakalaeb985f02009-12-15 11:56:59 +00005449 adapter->non_eop_descs = non_eop_descs;
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00005450
Joe Perches7ca647b2010-09-07 21:35:40 +00005451 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005452 for (i = 0; i < 8; i++) {
5453 /* for packet buffers not used, the register should read 0 */
5454 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
5455 missed_rx += mpc;
Joe Perches7ca647b2010-09-07 21:35:40 +00005456 hwstats->mpc[i] += mpc;
5457 total_mpc += hwstats->mpc[i];
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005458 if (hw->mac.type == ixgbe_mac_82598EB)
Joe Perches7ca647b2010-09-07 21:35:40 +00005459 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
5460 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
5461 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
5462 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
5463 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005464 if (hw->mac.type == ixgbe_mac_82599EB) {
Joe Perches7ca647b2010-09-07 21:35:40 +00005465 hwstats->pxonrxc[i] +=
5466 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
5467 hwstats->pxoffrxc[i] +=
5468 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
5469 hwstats->qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005470 } else {
Joe Perches7ca647b2010-09-07 21:35:40 +00005471 hwstats->pxonrxc[i] +=
5472 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
5473 hwstats->pxoffrxc[i] +=
5474 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005475 }
Joe Perches7ca647b2010-09-07 21:35:40 +00005476 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
5477 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005478 }
Joe Perches7ca647b2010-09-07 21:35:40 +00005479 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005480 /* work around hardware counting issue */
Joe Perches7ca647b2010-09-07 21:35:40 +00005481 hwstats->gprc -= missed_rx;
Auke Kok9a799d72007-09-15 14:07:45 -07005482
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005483 /* 82598 hardware only has a 32 bit counter in the high register */
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005484 if (hw->mac.type == ixgbe_mac_82599EB) {
Ben Greearaad71912009-09-30 12:08:16 +00005485 u64 tmp;
Joe Perches7ca647b2010-09-07 21:35:40 +00005486 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
Joe Perchese8e9f692010-09-07 21:34:53 +00005487 tmp = IXGBE_READ_REG(hw, IXGBE_GORCH) & 0xF;
5488 /* 4 high bits of GORC */
Joe Perches7ca647b2010-09-07 21:35:40 +00005489 hwstats->gorc += (tmp << 32);
5490 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
Joe Perchese8e9f692010-09-07 21:34:53 +00005491 tmp = IXGBE_READ_REG(hw, IXGBE_GOTCH) & 0xF;
5492 /* 4 high bits of GOTC */
Joe Perches7ca647b2010-09-07 21:35:40 +00005493 hwstats->gotc += (tmp << 32);
5494 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
Joe Perchese8e9f692010-09-07 21:34:53 +00005495 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
Joe Perches7ca647b2010-09-07 21:35:40 +00005496 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
5497 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
5498 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
5499 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
Yi Zou6d455222009-05-13 13:12:16 +00005500#ifdef IXGBE_FCOE
Joe Perches7ca647b2010-09-07 21:35:40 +00005501 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
5502 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
5503 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
5504 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
5505 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
5506 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
Yi Zou6d455222009-05-13 13:12:16 +00005507#endif /* IXGBE_FCOE */
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005508 } else {
Joe Perches7ca647b2010-09-07 21:35:40 +00005509 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
5510 hwstats->lxoffrxc += IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
5511 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
5512 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
5513 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005514 }
Auke Kok9a799d72007-09-15 14:07:45 -07005515 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
Joe Perches7ca647b2010-09-07 21:35:40 +00005516 hwstats->bprc += bprc;
5517 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005518 if (hw->mac.type == ixgbe_mac_82598EB)
Joe Perches7ca647b2010-09-07 21:35:40 +00005519 hwstats->mprc -= bprc;
5520 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
5521 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
5522 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
5523 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
5524 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
5525 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
5526 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
5527 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005528 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00005529 hwstats->lxontxc += lxon;
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005530 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
Joe Perches7ca647b2010-09-07 21:35:40 +00005531 hwstats->lxofftxc += lxoff;
5532 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5533 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
5534 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
Ayyappan Veeraiyan6f11eef2008-02-01 15:59:14 -08005535 /*
5536 * 82598 errata - tx of flow control packets is included in tx counters
5537 */
5538 xon_off_tot = lxon + lxoff;
Joe Perches7ca647b2010-09-07 21:35:40 +00005539 hwstats->gptc -= xon_off_tot;
5540 hwstats->mptc -= xon_off_tot;
5541 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
5542 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
5543 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
5544 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
5545 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
5546 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
5547 hwstats->ptc64 -= xon_off_tot;
5548 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
5549 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
5550 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
5551 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
5552 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
5553 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
Auke Kok9a799d72007-09-15 14:07:45 -07005554
5555 /* Fill out the OS statistics structure */
Joe Perches7ca647b2010-09-07 21:35:40 +00005556 netdev->stats.multicast = hwstats->mprc;
Auke Kok9a799d72007-09-15 14:07:45 -07005557
5558 /* Rx Errors */
Joe Perches7ca647b2010-09-07 21:35:40 +00005559 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00005560 netdev->stats.rx_dropped = 0;
Joe Perches7ca647b2010-09-07 21:35:40 +00005561 netdev->stats.rx_length_errors = hwstats->rlec;
5562 netdev->stats.rx_crc_errors = hwstats->crcerrs;
Ajit Khaparde2d86f132009-10-07 02:43:49 +00005563 netdev->stats.rx_missed_errors = total_mpc;
Auke Kok9a799d72007-09-15 14:07:45 -07005564}
5565
5566/**
5567 * ixgbe_watchdog - Timer Call-back
5568 * @data: pointer to adapter cast into an unsigned long
5569 **/
5570static void ixgbe_watchdog(unsigned long data)
5571{
5572 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005573 struct ixgbe_hw *hw = &adapter->hw;
Alexander Duyckfe49f042009-06-04 16:00:09 +00005574 u64 eics = 0;
5575 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07005576
Alexander Duyckfe49f042009-06-04 16:00:09 +00005577 /*
5578 * Do the watchdog outside of interrupt context due to the lovely
5579 * delays that some of the newer hardware requires
5580 */
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00005581
Alexander Duyckfe49f042009-06-04 16:00:09 +00005582 if (test_bit(__IXGBE_DOWN, &adapter->state))
5583 goto watchdog_short_circuit;
Jesse Brandeburg22d5a712009-03-19 01:24:04 +00005584
Alexander Duyckfe49f042009-06-04 16:00:09 +00005585 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
5586 /*
5587 * for legacy and MSI interrupts don't set any bits
5588 * that are enabled for EIAM, because this operation
5589 * would set *both* EIMS and EICS for any bit in EIAM
5590 */
5591 IXGBE_WRITE_REG(hw, IXGBE_EICS,
5592 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
5593 goto watchdog_reschedule;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005594 }
5595
Alexander Duyckfe49f042009-06-04 16:00:09 +00005596 /* get one bit for every active tx/rx interrupt vector */
5597 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) {
5598 struct ixgbe_q_vector *qv = adapter->q_vector[i];
5599 if (qv->rxr_count || qv->txr_count)
5600 eics |= ((u64)1 << i);
5601 }
5602
5603 /* Cause software interrupt to ensure rx rings are cleaned */
5604 ixgbe_irq_rearm_queues(adapter, eics);
5605
5606watchdog_reschedule:
5607 /* Reset the timer */
5608 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
5609
5610watchdog_short_circuit:
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005611 schedule_work(&adapter->watchdog_task);
5612}
5613
5614/**
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005615 * ixgbe_multispeed_fiber_task - worker thread to configure multispeed fiber
5616 * @work: pointer to work_struct containing our data
5617 **/
5618static void ixgbe_multispeed_fiber_task(struct work_struct *work)
5619{
5620 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00005621 struct ixgbe_adapter,
5622 multispeed_fiber_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005623 struct ixgbe_hw *hw = &adapter->hw;
5624 u32 autoneg;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005625 bool negotiation;
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005626
5627 adapter->flags |= IXGBE_FLAG_IN_SFP_LINK_TASK;
Mallikarjuna R Chilakalaa1f25322009-06-30 11:44:36 +00005628 autoneg = hw->phy.autoneg_advertised;
5629 if ((!autoneg) && (hw->mac.ops.get_link_capabilities))
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005630 hw->mac.ops.get_link_capabilities(hw, &autoneg, &negotiation);
Mallikarjuna R Chilakala1097cd12010-03-18 14:34:52 +00005631 hw->mac.autotry_restart = false;
Mallikarjuna R Chilakala8620a102009-09-01 13:49:35 +00005632 if (hw->mac.ops.setup_link)
5633 hw->mac.ops.setup_link(hw, autoneg, negotiation, true);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005634 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5635 adapter->flags &= ~IXGBE_FLAG_IN_SFP_LINK_TASK;
5636}
5637
5638/**
5639 * ixgbe_sfp_config_module_task - worker thread to configure a new SFP+ module
5640 * @work: pointer to work_struct containing our data
5641 **/
5642static void ixgbe_sfp_config_module_task(struct work_struct *work)
5643{
5644 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00005645 struct ixgbe_adapter,
5646 sfp_config_module_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005647 struct ixgbe_hw *hw = &adapter->hw;
5648 u32 err;
5649
5650 adapter->flags |= IXGBE_FLAG_IN_SFP_MOD_TASK;
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005651
5652 /* Time for electrical oscillations to settle down */
5653 msleep(100);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005654 err = hw->phy.ops.identify_sfp(hw);
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005655
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005656 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Emil Tantilov849c4542010-06-03 16:53:41 +00005657 e_dev_err("failed to initialize because an unsupported SFP+ "
5658 "module type was detected.\n");
5659 e_dev_err("Reload the driver after installing a supported "
5660 "module.\n");
Don Skidmore63d6e1d2009-07-02 12:50:12 +00005661 unregister_netdev(adapter->netdev);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005662 return;
5663 }
5664 hw->mac.ops.setup_sfp(hw);
5665
Tony Breeds8d1c3c02009-04-09 22:29:10 +00005666 if (!(adapter->flags & IXGBE_FLAG_IN_SFP_LINK_TASK))
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005667 /* This will also work for DA Twinax connections */
5668 schedule_work(&adapter->multispeed_fiber_task);
5669 adapter->flags &= ~IXGBE_FLAG_IN_SFP_MOD_TASK;
5670}
5671
5672/**
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005673 * ixgbe_fdir_reinit_task - worker thread to reinit FDIR filter table
5674 * @work: pointer to work_struct containing our data
5675 **/
5676static void ixgbe_fdir_reinit_task(struct work_struct *work)
5677{
5678 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00005679 struct ixgbe_adapter,
5680 fdir_reinit_task);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005681 struct ixgbe_hw *hw = &adapter->hw;
5682 int i;
5683
5684 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
5685 for (i = 0; i < adapter->num_tx_queues; i++)
5686 set_bit(__IXGBE_FDIR_INIT_DONE,
Joe Perchese8e9f692010-09-07 21:34:53 +00005687 &(adapter->tx_ring[i]->reinit_state));
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005688 } else {
Emil Tantilov396e7992010-07-01 20:05:12 +00005689 e_err(probe, "failed to finish FDIR re-initialization, "
Emil Tantilov849c4542010-06-03 16:53:41 +00005690 "ignored adding FDIR ATR filters\n");
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005691 }
5692 /* Done FDIR Re-initialization, enable transmits */
5693 netif_tx_start_all_queues(adapter->netdev);
5694}
5695
John Fastabend10eec952010-02-03 14:23:32 +00005696static DEFINE_MUTEX(ixgbe_watchdog_lock);
5697
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00005698/**
Alexander Duyck69888672008-09-11 20:05:39 -07005699 * ixgbe_watchdog_task - worker thread to bring link up
5700 * @work: pointer to work_struct containing our data
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005701 **/
5702static void ixgbe_watchdog_task(struct work_struct *work)
5703{
5704 struct ixgbe_adapter *adapter = container_of(work,
Joe Perchese8e9f692010-09-07 21:34:53 +00005705 struct ixgbe_adapter,
5706 watchdog_task);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005707 struct net_device *netdev = adapter->netdev;
5708 struct ixgbe_hw *hw = &adapter->hw;
John Fastabend10eec952010-02-03 14:23:32 +00005709 u32 link_speed;
5710 bool link_up;
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005711 int i;
5712 struct ixgbe_ring *tx_ring;
5713 int some_tx_pending = 0;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005714
John Fastabend10eec952010-02-03 14:23:32 +00005715 mutex_lock(&ixgbe_watchdog_lock);
5716
5717 link_up = adapter->link_up;
5718 link_speed = adapter->link_speed;
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005719
5720 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) {
5721 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005722 if (link_up) {
5723#ifdef CONFIG_DCB
5724 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
5725 for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005726 hw->mac.ops.fc_enable(hw, i);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005727 } else {
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005728 hw->mac.ops.fc_enable(hw, 0);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005729 }
5730#else
Mallikarjuna R Chilakala620fa032009-06-04 11:11:13 +00005731 hw->mac.ops.fc_enable(hw, 0);
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005732#endif
5733 }
5734
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005735 if (link_up ||
5736 time_after(jiffies, (adapter->link_check_timeout +
Joe Perchese8e9f692010-09-07 21:34:53 +00005737 IXGBE_TRY_LINK_TIMEOUT))) {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005738 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
Peter P Waskiewicz Jr264857b2009-05-17 12:35:16 +00005739 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005740 }
5741 adapter->link_up = link_up;
5742 adapter->link_speed = link_speed;
5743 }
Auke Kok9a799d72007-09-15 14:07:45 -07005744
5745 if (link_up) {
5746 if (!netif_carrier_ok(netdev)) {
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005747 bool flow_rx, flow_tx;
5748
5749 if (hw->mac.type == ixgbe_mac_82599EB) {
5750 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
5751 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
Peter P Waskiewicz Jr078788b2009-07-16 15:50:32 +00005752 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
5753 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005754 } else {
5755 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
5756 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
Peter P Waskiewicz Jr078788b2009-07-16 15:50:32 +00005757 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
5758 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005759 }
5760
Emil Tantilov396e7992010-07-01 20:05:12 +00005761 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n",
Jeff Kirshera46e5342008-11-27 00:22:21 -08005762 (link_speed == IXGBE_LINK_SPEED_10GB_FULL ?
Emil Tantilov849c4542010-06-03 16:53:41 +00005763 "10 Gbps" :
5764 (link_speed == IXGBE_LINK_SPEED_1GB_FULL ?
5765 "1 Gbps" : "unknown speed")),
PJ Waskiewicze8e26352009-02-27 15:45:05 +00005766 ((flow_rx && flow_tx) ? "RX/TX" :
Emil Tantilov849c4542010-06-03 16:53:41 +00005767 (flow_rx ? "RX" :
5768 (flow_tx ? "TX" : "None"))));
Auke Kok9a799d72007-09-15 14:07:45 -07005769
5770 netif_carrier_on(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005771 } else {
5772 /* Force detection of hung controller */
5773 adapter->detect_tx_hung = true;
5774 }
5775 } else {
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07005776 adapter->link_up = false;
5777 adapter->link_speed = 0;
Auke Kok9a799d72007-09-15 14:07:45 -07005778 if (netif_carrier_ok(netdev)) {
Emil Tantilov396e7992010-07-01 20:05:12 +00005779 e_info(drv, "NIC Link is Down\n");
Auke Kok9a799d72007-09-15 14:07:45 -07005780 netif_carrier_off(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07005781 }
5782 }
5783
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005784 if (!netif_carrier_ok(netdev)) {
5785 for (i = 0; i < adapter->num_tx_queues; i++) {
PJ Waskiewicz4a0b9ca2010-02-03 14:19:12 +00005786 tx_ring = adapter->tx_ring[i];
Nelson, Shannonbc59fcd2009-04-27 22:43:12 +00005787 if (tx_ring->next_to_use != tx_ring->next_to_clean) {
5788 some_tx_pending = 1;
5789 break;
5790 }
5791 }
5792
5793 if (some_tx_pending) {
5794 /* We've lost link, so the controller stops DMA,
5795 * but we've got queued Tx work that's never going
5796 * to get done, so reset controller to flush Tx.
5797 * (Do the reset outside of interrupt context).
5798 */
5799 schedule_work(&adapter->reset_task);
5800 }
5801 }
5802
Auke Kok9a799d72007-09-15 14:07:45 -07005803 ixgbe_update_stats(adapter);
John Fastabend10eec952010-02-03 14:23:32 +00005804 mutex_unlock(&ixgbe_watchdog_lock);
Auke Kok9a799d72007-09-15 14:07:45 -07005805}
5806
Auke Kok9a799d72007-09-15 14:07:45 -07005807static int ixgbe_tso(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005808 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
5809 u32 tx_flags, u8 *hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07005810{
5811 struct ixgbe_adv_tx_context_desc *context_desc;
5812 unsigned int i;
5813 int err;
5814 struct ixgbe_tx_buffer *tx_buffer_info;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005815 u32 vlan_macip_lens = 0, type_tucmd_mlhl;
5816 u32 mss_l4len_idx, l4len;
Auke Kok9a799d72007-09-15 14:07:45 -07005817
5818 if (skb_is_gso(skb)) {
5819 if (skb_header_cloned(skb)) {
5820 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
5821 if (err)
5822 return err;
5823 }
5824 l4len = tcp_hdrlen(skb);
5825 *hdr_len += l4len;
5826
Al Viro8327d002007-12-10 18:54:12 +00005827 if (skb->protocol == htons(ETH_P_IP)) {
Auke Kok9a799d72007-09-15 14:07:45 -07005828 struct iphdr *iph = ip_hdr(skb);
5829 iph->tot_len = 0;
5830 iph->check = 0;
5831 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
Joe Perchese8e9f692010-09-07 21:34:53 +00005832 iph->daddr, 0,
5833 IPPROTO_TCP,
5834 0);
Sridhar Samudrala8e1e8a42010-01-23 02:02:21 -08005835 } else if (skb_is_gso_v6(skb)) {
Auke Kok9a799d72007-09-15 14:07:45 -07005836 ipv6_hdr(skb)->payload_len = 0;
5837 tcp_hdr(skb)->check =
5838 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
Joe Perchese8e9f692010-09-07 21:34:53 +00005839 &ipv6_hdr(skb)->daddr,
5840 0, IPPROTO_TCP, 0);
Auke Kok9a799d72007-09-15 14:07:45 -07005841 }
5842
5843 i = tx_ring->next_to_use;
5844
5845 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyck31f05a22010-08-19 13:40:31 +00005846 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07005847
5848 /* VLAN MACLEN IPLEN */
5849 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5850 vlan_macip_lens |=
5851 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5852 vlan_macip_lens |= ((skb_network_offset(skb)) <<
Joe Perchese8e9f692010-09-07 21:34:53 +00005853 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005854 *hdr_len += skb_network_offset(skb);
5855 vlan_macip_lens |=
5856 (skb_transport_header(skb) - skb_network_header(skb));
5857 *hdr_len +=
5858 (skb_transport_header(skb) - skb_network_header(skb));
5859 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5860 context_desc->seqnum_seed = 0;
5861
5862 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005863 type_tucmd_mlhl = (IXGBE_TXD_CMD_DEXT |
Joe Perchese8e9f692010-09-07 21:34:53 +00005864 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07005865
Al Viro8327d002007-12-10 18:54:12 +00005866 if (skb->protocol == htons(ETH_P_IP))
Auke Kok9a799d72007-09-15 14:07:45 -07005867 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_IPV4;
5868 type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5869 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
5870
5871 /* MSS L4LEN IDX */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005872 mss_l4len_idx =
Auke Kok9a799d72007-09-15 14:07:45 -07005873 (skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT);
5874 mss_l4len_idx |= (l4len << IXGBE_ADVTXD_L4LEN_SHIFT);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07005875 /* use index 1 for TSO */
5876 mss_l4len_idx |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005877 context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
5878
5879 tx_buffer_info->time_stamp = jiffies;
5880 tx_buffer_info->next_to_watch = i;
5881
5882 i++;
5883 if (i == tx_ring->count)
5884 i = 0;
5885 tx_ring->next_to_use = i;
5886
5887 return true;
5888 }
5889 return false;
5890}
5891
Joe Perches7ca647b2010-09-07 21:35:40 +00005892static u32 ixgbe_psum(struct ixgbe_adapter *adapter, struct sk_buff *skb)
5893{
5894 u32 rtn = 0;
5895 __be16 protocol;
5896
5897 if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
5898 protocol = ((const struct vlan_ethhdr *)skb->data)->
5899 h_vlan_encapsulated_proto;
5900 else
5901 protocol = skb->protocol;
5902
5903 switch (protocol) {
5904 case cpu_to_be16(ETH_P_IP):
5905 rtn |= IXGBE_ADVTXD_TUCMD_IPV4;
5906 switch (ip_hdr(skb)->protocol) {
5907 case IPPROTO_TCP:
5908 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5909 break;
5910 case IPPROTO_SCTP:
5911 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5912 break;
5913 }
5914 break;
5915 case cpu_to_be16(ETH_P_IPV6):
5916 /* XXX what about other V6 headers?? */
5917 switch (ipv6_hdr(skb)->nexthdr) {
5918 case IPPROTO_TCP:
5919 rtn |= IXGBE_ADVTXD_TUCMD_L4T_TCP;
5920 break;
5921 case IPPROTO_SCTP:
5922 rtn |= IXGBE_ADVTXD_TUCMD_L4T_SCTP;
5923 break;
5924 }
5925 break;
5926 default:
5927 if (unlikely(net_ratelimit()))
5928 e_warn(probe, "partial checksum but proto=%x!\n",
5929 skb->protocol);
5930 break;
5931 }
5932
5933 return rtn;
5934}
5935
Auke Kok9a799d72007-09-15 14:07:45 -07005936static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005937 struct ixgbe_ring *tx_ring,
5938 struct sk_buff *skb, u32 tx_flags)
Auke Kok9a799d72007-09-15 14:07:45 -07005939{
5940 struct ixgbe_adv_tx_context_desc *context_desc;
5941 unsigned int i;
5942 struct ixgbe_tx_buffer *tx_buffer_info;
5943 u32 vlan_macip_lens = 0, type_tucmd_mlhl = 0;
5944
5945 if (skb->ip_summed == CHECKSUM_PARTIAL ||
5946 (tx_flags & IXGBE_TX_FLAGS_VLAN)) {
5947 i = tx_ring->next_to_use;
5948 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyck31f05a22010-08-19 13:40:31 +00005949 context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07005950
5951 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
5952 vlan_macip_lens |=
5953 (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK);
5954 vlan_macip_lens |= (skb_network_offset(skb) <<
Joe Perchese8e9f692010-09-07 21:34:53 +00005955 IXGBE_ADVTXD_MACLEN_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07005956 if (skb->ip_summed == CHECKSUM_PARTIAL)
5957 vlan_macip_lens |= (skb_transport_header(skb) -
Joe Perchese8e9f692010-09-07 21:34:53 +00005958 skb_network_header(skb));
Auke Kok9a799d72007-09-15 14:07:45 -07005959
5960 context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens);
5961 context_desc->seqnum_seed = 0;
5962
5963 type_tucmd_mlhl |= (IXGBE_TXD_CMD_DEXT |
Joe Perchese8e9f692010-09-07 21:34:53 +00005964 IXGBE_ADVTXD_DTYP_CTXT);
Auke Kok9a799d72007-09-15 14:07:45 -07005965
Joe Perches7ca647b2010-09-07 21:35:40 +00005966 if (skb->ip_summed == CHECKSUM_PARTIAL)
5967 type_tucmd_mlhl |= ixgbe_psum(adapter, skb);
Auke Kok9a799d72007-09-15 14:07:45 -07005968
5969 context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd_mlhl);
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07005970 /* use index zero for tx checksum offload */
Auke Kok9a799d72007-09-15 14:07:45 -07005971 context_desc->mss_l4len_idx = 0;
5972
5973 tx_buffer_info->time_stamp = jiffies;
5974 tx_buffer_info->next_to_watch = i;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005975
Auke Kok9a799d72007-09-15 14:07:45 -07005976 i++;
5977 if (i == tx_ring->count)
5978 i = 0;
5979 tx_ring->next_to_use = i;
5980
5981 return true;
5982 }
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07005983
Auke Kok9a799d72007-09-15 14:07:45 -07005984 return false;
5985}
5986
5987static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00005988 struct ixgbe_ring *tx_ring,
5989 struct sk_buff *skb, u32 tx_flags,
5990 unsigned int first)
Auke Kok9a799d72007-09-15 14:07:45 -07005991{
Alexander Duycke5a43542009-12-02 16:46:56 +00005992 struct pci_dev *pdev = adapter->pdev;
Auke Kok9a799d72007-09-15 14:07:45 -07005993 struct ixgbe_tx_buffer *tx_buffer_info;
Yi Zoueacd73f2009-05-13 13:11:06 +00005994 unsigned int len;
5995 unsigned int total = skb->len;
Auke Kok9a799d72007-09-15 14:07:45 -07005996 unsigned int offset = 0, size, count = 0, i;
5997 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
5998 unsigned int f;
Auke Kok9a799d72007-09-15 14:07:45 -07005999
6000 i = tx_ring->next_to_use;
6001
Yi Zoueacd73f2009-05-13 13:11:06 +00006002 if (tx_flags & IXGBE_TX_FLAGS_FCOE)
6003 /* excluding fcoe_crc_eof for FCoE */
6004 total -= sizeof(struct fcoe_crc_eof);
6005
6006 len = min(skb_headlen(skb), total);
Auke Kok9a799d72007-09-15 14:07:45 -07006007 while (len) {
6008 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6009 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6010
6011 tx_buffer_info->length = size;
Alexander Duycke5a43542009-12-02 16:46:56 +00006012 tx_buffer_info->mapped_as_page = false;
Nick Nunley1b507732010-04-27 13:10:27 +00006013 tx_buffer_info->dma = dma_map_single(&pdev->dev,
Alexander Duycke5a43542009-12-02 16:46:56 +00006014 skb->data + offset,
Nick Nunley1b507732010-04-27 13:10:27 +00006015 size, DMA_TO_DEVICE);
6016 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
Alexander Duycke5a43542009-12-02 16:46:56 +00006017 goto dma_error;
Auke Kok9a799d72007-09-15 14:07:45 -07006018 tx_buffer_info->time_stamp = jiffies;
6019 tx_buffer_info->next_to_watch = i;
6020
6021 len -= size;
Yi Zoueacd73f2009-05-13 13:11:06 +00006022 total -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07006023 offset += size;
6024 count++;
Alexander Duyck44df32c2009-03-31 21:34:23 +00006025
6026 if (len) {
6027 i++;
6028 if (i == tx_ring->count)
6029 i = 0;
6030 }
Auke Kok9a799d72007-09-15 14:07:45 -07006031 }
6032
6033 for (f = 0; f < nr_frags; f++) {
6034 struct skb_frag_struct *frag;
6035
6036 frag = &skb_shinfo(skb)->frags[f];
Yi Zoueacd73f2009-05-13 13:11:06 +00006037 len = min((unsigned int)frag->size, total);
Alexander Duycke5a43542009-12-02 16:46:56 +00006038 offset = frag->page_offset;
Auke Kok9a799d72007-09-15 14:07:45 -07006039
6040 while (len) {
Alexander Duyck44df32c2009-03-31 21:34:23 +00006041 i++;
6042 if (i == tx_ring->count)
6043 i = 0;
6044
Auke Kok9a799d72007-09-15 14:07:45 -07006045 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6046 size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
6047
6048 tx_buffer_info->length = size;
Nick Nunley1b507732010-04-27 13:10:27 +00006049 tx_buffer_info->dma = dma_map_page(&adapter->pdev->dev,
Alexander Duycke5a43542009-12-02 16:46:56 +00006050 frag->page,
6051 offset, size,
Nick Nunley1b507732010-04-27 13:10:27 +00006052 DMA_TO_DEVICE);
Alexander Duycke5a43542009-12-02 16:46:56 +00006053 tx_buffer_info->mapped_as_page = true;
Nick Nunley1b507732010-04-27 13:10:27 +00006054 if (dma_mapping_error(&pdev->dev, tx_buffer_info->dma))
Alexander Duycke5a43542009-12-02 16:46:56 +00006055 goto dma_error;
Auke Kok9a799d72007-09-15 14:07:45 -07006056 tx_buffer_info->time_stamp = jiffies;
6057 tx_buffer_info->next_to_watch = i;
6058
6059 len -= size;
Yi Zoueacd73f2009-05-13 13:11:06 +00006060 total -= size;
Auke Kok9a799d72007-09-15 14:07:45 -07006061 offset += size;
6062 count++;
Auke Kok9a799d72007-09-15 14:07:45 -07006063 }
Yi Zoueacd73f2009-05-13 13:11:06 +00006064 if (total == 0)
6065 break;
Auke Kok9a799d72007-09-15 14:07:45 -07006066 }
Alexander Duyck44df32c2009-03-31 21:34:23 +00006067
Auke Kok9a799d72007-09-15 14:07:45 -07006068 tx_ring->tx_buffer_info[i].skb = skb;
6069 tx_ring->tx_buffer_info[first].next_to_watch = i;
6070
6071 return count;
Alexander Duycke5a43542009-12-02 16:46:56 +00006072
6073dma_error:
Emil Tantilov849c4542010-06-03 16:53:41 +00006074 e_dev_err("TX DMA map failed\n");
Alexander Duycke5a43542009-12-02 16:46:56 +00006075
6076 /* clear timestamp and dma mappings for failed tx_buffer_info map */
6077 tx_buffer_info->dma = 0;
6078 tx_buffer_info->time_stamp = 0;
6079 tx_buffer_info->next_to_watch = 0;
Roel Kluinc1fa3472010-01-19 14:21:45 +00006080 if (count)
6081 count--;
Alexander Duycke5a43542009-12-02 16:46:56 +00006082
6083 /* clear timestamp and dma mappings for remaining portion of packet */
Roel Kluinc1fa3472010-01-19 14:21:45 +00006084 while (count--) {
Joe Perchese8e9f692010-09-07 21:34:53 +00006085 if (i == 0)
Alexander Duycke5a43542009-12-02 16:46:56 +00006086 i += tx_ring->count;
Roel Kluinc1fa3472010-01-19 14:21:45 +00006087 i--;
Alexander Duycke5a43542009-12-02 16:46:56 +00006088 tx_buffer_info = &tx_ring->tx_buffer_info[i];
6089 ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
6090 }
6091
Anton Blancharde44d38e2010-02-03 13:12:51 +00006092 return 0;
Auke Kok9a799d72007-09-15 14:07:45 -07006093}
6094
6095static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
Joe Perchese8e9f692010-09-07 21:34:53 +00006096 struct ixgbe_ring *tx_ring,
6097 int tx_flags, int count, u32 paylen, u8 hdr_len)
Auke Kok9a799d72007-09-15 14:07:45 -07006098{
6099 union ixgbe_adv_tx_desc *tx_desc = NULL;
6100 struct ixgbe_tx_buffer *tx_buffer_info;
6101 u32 olinfo_status = 0, cmd_type_len = 0;
6102 unsigned int i;
6103 u32 txd_cmd = IXGBE_TXD_CMD_EOP | IXGBE_TXD_CMD_RS | IXGBE_TXD_CMD_IFCS;
6104
6105 cmd_type_len |= IXGBE_ADVTXD_DTYP_DATA;
6106
6107 cmd_type_len |= IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT;
6108
6109 if (tx_flags & IXGBE_TX_FLAGS_VLAN)
6110 cmd_type_len |= IXGBE_ADVTXD_DCMD_VLE;
6111
6112 if (tx_flags & IXGBE_TX_FLAGS_TSO) {
6113 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6114
6115 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Joe Perchese8e9f692010-09-07 21:34:53 +00006116 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07006117
PJ Waskiewicz4eeae6f2008-08-26 04:27:30 -07006118 /* use index 1 context for tso */
6119 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
Auke Kok9a799d72007-09-15 14:07:45 -07006120 if (tx_flags & IXGBE_TX_FLAGS_IPV4)
6121 olinfo_status |= IXGBE_TXD_POPTS_IXSM <<
Joe Perchese8e9f692010-09-07 21:34:53 +00006122 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07006123
6124 } else if (tx_flags & IXGBE_TX_FLAGS_CSUM)
6125 olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
Joe Perchese8e9f692010-09-07 21:34:53 +00006126 IXGBE_ADVTXD_POPTS_SHIFT;
Auke Kok9a799d72007-09-15 14:07:45 -07006127
Yi Zoueacd73f2009-05-13 13:11:06 +00006128 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6129 olinfo_status |= IXGBE_ADVTXD_CC;
6130 olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
6131 if (tx_flags & IXGBE_TX_FLAGS_FSO)
6132 cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
6133 }
6134
Auke Kok9a799d72007-09-15 14:07:45 -07006135 olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
6136
6137 i = tx_ring->next_to_use;
6138 while (count--) {
6139 tx_buffer_info = &tx_ring->tx_buffer_info[i];
Alexander Duyck31f05a22010-08-19 13:40:31 +00006140 tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
Auke Kok9a799d72007-09-15 14:07:45 -07006141 tx_desc->read.buffer_addr = cpu_to_le64(tx_buffer_info->dma);
6142 tx_desc->read.cmd_type_len =
Joe Perchese8e9f692010-09-07 21:34:53 +00006143 cpu_to_le32(cmd_type_len | tx_buffer_info->length);
Auke Kok9a799d72007-09-15 14:07:45 -07006144 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
Auke Kok9a799d72007-09-15 14:07:45 -07006145 i++;
6146 if (i == tx_ring->count)
6147 i = 0;
6148 }
6149
6150 tx_desc->read.cmd_type_len |= cpu_to_le32(txd_cmd);
6151
6152 /*
6153 * Force memory writes to complete before letting h/w
6154 * know there are new descriptors to fetch. (Only
6155 * applicable for weak-ordered memory model archs,
6156 * such as IA-64).
6157 */
6158 wmb();
6159
6160 tx_ring->next_to_use = i;
6161 writel(i, adapter->hw.hw_addr + tx_ring->tail);
6162}
6163
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006164static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
Joe Perchese8e9f692010-09-07 21:34:53 +00006165 int queue, u32 tx_flags)
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006166{
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006167 struct ixgbe_atr_input atr_input;
6168 struct tcphdr *th;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006169 struct iphdr *iph = ip_hdr(skb);
6170 struct ethhdr *eth = (struct ethhdr *)skb->data;
6171 u16 vlan_id, src_port, dst_port, flex_bytes;
6172 u32 src_ipv4_addr, dst_ipv4_addr;
6173 u8 l4type = 0;
6174
Guillaume Gaudonvilled3ead242010-06-29 18:29:00 +00006175 /* Right now, we support IPv4 only */
6176 if (skb->protocol != htons(ETH_P_IP))
6177 return;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006178 /* check if we're UDP or TCP */
6179 if (iph->protocol == IPPROTO_TCP) {
6180 th = tcp_hdr(skb);
6181 src_port = th->source;
6182 dst_port = th->dest;
6183 l4type |= IXGBE_ATR_L4TYPE_TCP;
6184 /* l4type IPv4 type is 0, no need to assign */
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006185 } else {
6186 /* Unsupported L4 header, just bail here */
6187 return;
6188 }
6189
6190 memset(&atr_input, 0, sizeof(struct ixgbe_atr_input));
6191
6192 vlan_id = (tx_flags & IXGBE_TX_FLAGS_VLAN_MASK) >>
Joe Perchese8e9f692010-09-07 21:34:53 +00006193 IXGBE_TX_FLAGS_VLAN_SHIFT;
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006194 src_ipv4_addr = iph->saddr;
6195 dst_ipv4_addr = iph->daddr;
6196 flex_bytes = eth->h_proto;
6197
6198 ixgbe_atr_set_vlan_id_82599(&atr_input, vlan_id);
6199 ixgbe_atr_set_src_port_82599(&atr_input, dst_port);
6200 ixgbe_atr_set_dst_port_82599(&atr_input, src_port);
6201 ixgbe_atr_set_flex_byte_82599(&atr_input, flex_bytes);
6202 ixgbe_atr_set_l4type_82599(&atr_input, l4type);
6203 /* src and dst are inverted, think how the receiver sees them */
6204 ixgbe_atr_set_src_ipv4_82599(&atr_input, dst_ipv4_addr);
6205 ixgbe_atr_set_dst_ipv4_82599(&atr_input, src_ipv4_addr);
6206
6207 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
6208 ixgbe_fdir_add_signature_filter_82599(&adapter->hw, &atr_input, queue);
6209}
6210
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006211static int __ixgbe_maybe_stop_tx(struct net_device *netdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00006212 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006213{
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08006214 netif_stop_subqueue(netdev, tx_ring->queue_index);
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006215 /* Herbert's original patch had:
6216 * smp_mb__after_netif_stop_queue();
6217 * but since that doesn't exist yet, just open code it. */
6218 smp_mb();
6219
6220 /* We need to check again in a case another CPU has just
6221 * made room available. */
6222 if (likely(IXGBE_DESC_UNUSED(tx_ring) < size))
6223 return -EBUSY;
6224
6225 /* A reprieve! - use start_queue because it doesn't call schedule */
Jesse Brandeburgaf721662008-09-11 19:54:23 -07006226 netif_start_subqueue(netdev, tx_ring->queue_index);
Jesse Brandeburg7ca3bc52009-12-03 11:33:29 +00006227 ++tx_ring->restart_queue;
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006228 return 0;
6229}
6230
6231static int ixgbe_maybe_stop_tx(struct net_device *netdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00006232 struct ixgbe_ring *tx_ring, int size)
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006233{
6234 if (likely(IXGBE_DESC_UNUSED(tx_ring) >= size))
6235 return 0;
6236 return __ixgbe_maybe_stop_tx(netdev, tx_ring, size);
6237}
6238
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07006239static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb)
6240{
6241 struct ixgbe_adapter *adapter = netdev_priv(dev);
Yi Zou5f715822009-12-03 11:32:44 +00006242 int txq = smp_processor_id();
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07006243
John Fastabend56075a92010-07-26 20:41:31 +00006244#ifdef IXGBE_FCOE
6245 if ((skb->protocol == htons(ETH_P_FCOE)) ||
6246 (skb->protocol == htons(ETH_P_FIP))) {
6247 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
6248 txq &= (adapter->ring_feature[RING_F_FCOE].indices - 1);
6249 txq += adapter->ring_feature[RING_F_FCOE].mask;
6250 return txq;
John Fastabend4bc091d2010-08-08 15:46:15 +00006251#ifdef CONFIG_IXGBE_DCB
John Fastabend56075a92010-07-26 20:41:31 +00006252 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6253 txq = adapter->fcoe.up;
6254 return txq;
John Fastabend4bc091d2010-08-08 15:46:15 +00006255#endif
John Fastabend56075a92010-07-26 20:41:31 +00006256 }
6257 }
6258#endif
6259
Krishna Kumarfdd3d632010-02-03 13:13:10 +00006260 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
6261 while (unlikely(txq >= dev->real_num_tx_queues))
6262 txq -= dev->real_num_tx_queues;
Yi Zou5f715822009-12-03 11:32:44 +00006263 return txq;
Krishna Kumarfdd3d632010-02-03 13:13:10 +00006264 }
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006265
John Fastabend2ea186a2010-02-27 03:28:24 -08006266 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6267 if (skb->priority == TC_PRIO_CONTROL)
6268 txq = adapter->ring_feature[RING_F_DCB].indices-1;
6269 else
6270 txq = (skb->vlan_tci & IXGBE_TX_FLAGS_VLAN_PRIO_MASK)
6271 >> 13;
6272 return txq;
6273 }
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07006274
6275 return skb_tx_hash(dev, skb);
6276}
6277
Alexander Duyck84418e32010-08-19 13:40:54 +00006278netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, struct net_device *netdev,
6279 struct ixgbe_adapter *adapter,
6280 struct ixgbe_ring *tx_ring)
Auke Kok9a799d72007-09-15 14:07:45 -07006281{
Eric Dumazet60d51132009-12-08 07:22:03 +00006282 struct netdev_queue *txq;
Auke Kok9a799d72007-09-15 14:07:45 -07006283 unsigned int first;
6284 unsigned int tx_flags = 0;
Ayyappan Veeraiyan30eba972008-03-03 15:03:52 -08006285 u8 hdr_len = 0;
Yi Zou5f715822009-12-03 11:32:44 +00006286 int tso;
Auke Kok9a799d72007-09-15 14:07:45 -07006287 int count = 0;
6288 unsigned int f;
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006289
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006290 if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
6291 tx_flags |= vlan_tx_tag_get(skb);
Alexander Duyck2f90b862008-11-20 20:52:10 -08006292 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6293 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
Yi Zou5f715822009-12-03 11:32:44 +00006294 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
Alexander Duyck2f90b862008-11-20 20:52:10 -08006295 }
6296 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6297 tx_flags |= IXGBE_TX_FLAGS_VLAN;
John Fastabend33c66bd2010-05-18 16:00:11 +00006298 } else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
6299 skb->priority != TC_PRIO_CONTROL) {
John Fastabend2ea186a2010-02-27 03:28:24 -08006300 tx_flags |= ((skb->queue_mapping & 0x7) << 13);
6301 tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
6302 tx_flags |= IXGBE_TX_FLAGS_VLAN;
Auke Kok9a799d72007-09-15 14:07:45 -07006303 }
Yi Zoueacd73f2009-05-13 13:11:06 +00006304
Yi Zou09ad1cc2009-09-03 14:56:10 +00006305#ifdef IXGBE_FCOE
John Fastabend56075a92010-07-26 20:41:31 +00006306 /* for FCoE with DCB, we force the priority to what
6307 * was specified by the switch */
6308 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED &&
6309 (skb->protocol == htons(ETH_P_FCOE) ||
6310 skb->protocol == htons(ETH_P_FIP))) {
John Fastabend4bc091d2010-08-08 15:46:15 +00006311#ifdef CONFIG_IXGBE_DCB
6312 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
6313 tx_flags &= ~(IXGBE_TX_FLAGS_VLAN_PRIO_MASK
6314 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6315 tx_flags |= ((adapter->fcoe.up << 13)
6316 << IXGBE_TX_FLAGS_VLAN_SHIFT);
6317 }
6318#endif
Robert Loveca77cd52010-03-24 12:45:00 +00006319 /* flag for FCoE offloads */
6320 if (skb->protocol == htons(ETH_P_FCOE))
6321 tx_flags |= IXGBE_TX_FLAGS_FCOE;
Yi Zou09ad1cc2009-09-03 14:56:10 +00006322 }
Robert Loveca77cd52010-03-24 12:45:00 +00006323#endif
6324
Yi Zoueacd73f2009-05-13 13:11:06 +00006325 /* four things can cause us to need a context descriptor */
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006326 if (skb_is_gso(skb) ||
6327 (skb->ip_summed == CHECKSUM_PARTIAL) ||
Yi Zoueacd73f2009-05-13 13:11:06 +00006328 (tx_flags & IXGBE_TX_FLAGS_VLAN) ||
6329 (tx_flags & IXGBE_TX_FLAGS_FCOE))
Auke Kok9a799d72007-09-15 14:07:45 -07006330 count++;
6331
Jesse Brandeburg9f8cdf42008-09-11 20:03:35 -07006332 count += TXD_USE_COUNT(skb_headlen(skb));
6333 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
Auke Kok9a799d72007-09-15 14:07:45 -07006334 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
6335
Ayyappan Veeraiyane092be62008-02-01 15:58:49 -08006336 if (ixgbe_maybe_stop_tx(netdev, tx_ring, count)) {
Auke Kok9a799d72007-09-15 14:07:45 -07006337 adapter->tx_busy++;
Auke Kok9a799d72007-09-15 14:07:45 -07006338 return NETDEV_TX_BUSY;
6339 }
Auke Kok9a799d72007-09-15 14:07:45 -07006340
Auke Kok9a799d72007-09-15 14:07:45 -07006341 first = tx_ring->next_to_use;
Yi Zoueacd73f2009-05-13 13:11:06 +00006342 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
6343#ifdef IXGBE_FCOE
6344 /* setup tx offload for FCoE */
6345 tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6346 if (tso < 0) {
6347 dev_kfree_skb_any(skb);
6348 return NETDEV_TX_OK;
6349 }
6350 if (tso)
6351 tx_flags |= IXGBE_TX_FLAGS_FSO;
6352#endif /* IXGBE_FCOE */
6353 } else {
6354 if (skb->protocol == htons(ETH_P_IP))
6355 tx_flags |= IXGBE_TX_FLAGS_IPV4;
6356 tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
6357 if (tso < 0) {
6358 dev_kfree_skb_any(skb);
6359 return NETDEV_TX_OK;
6360 }
6361
6362 if (tso)
6363 tx_flags |= IXGBE_TX_FLAGS_TSO;
6364 else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
6365 (skb->ip_summed == CHECKSUM_PARTIAL))
6366 tx_flags |= IXGBE_TX_FLAGS_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07006367 }
6368
Yi Zoueacd73f2009-05-13 13:11:06 +00006369 count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
Alexander Duyck44df32c2009-03-31 21:34:23 +00006370 if (count) {
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006371 /* add the ATR filter if ATR is on */
6372 if (tx_ring->atr_sample_rate) {
6373 ++tx_ring->atr_count;
6374 if ((tx_ring->atr_count >= tx_ring->atr_sample_rate) &&
Joe Perchese8e9f692010-09-07 21:34:53 +00006375 test_bit(__IXGBE_FDIR_INIT_DONE,
6376 &tx_ring->reinit_state)) {
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006377 ixgbe_atr(adapter, skb, tx_ring->queue_index,
Joe Perchese8e9f692010-09-07 21:34:53 +00006378 tx_flags);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006379 tx_ring->atr_count = 0;
6380 }
6381 }
Eric Dumazet60d51132009-12-08 07:22:03 +00006382 txq = netdev_get_tx_queue(netdev, tx_ring->queue_index);
6383 txq->tx_bytes += skb->len;
6384 txq->tx_packets++;
Alexander Duyck44df32c2009-03-31 21:34:23 +00006385 ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
Joe Perchese8e9f692010-09-07 21:34:53 +00006386 hdr_len);
Alexander Duyck44df32c2009-03-31 21:34:23 +00006387 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
Auke Kok9a799d72007-09-15 14:07:45 -07006388
Alexander Duyck44df32c2009-03-31 21:34:23 +00006389 } else {
6390 dev_kfree_skb_any(skb);
6391 tx_ring->tx_buffer_info[first].time_stamp = 0;
6392 tx_ring->next_to_use = first;
6393 }
Auke Kok9a799d72007-09-15 14:07:45 -07006394
6395 return NETDEV_TX_OK;
6396}
6397
Alexander Duyck84418e32010-08-19 13:40:54 +00006398static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
6399{
6400 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6401 struct ixgbe_ring *tx_ring;
6402
6403 tx_ring = adapter->tx_ring[skb->queue_mapping];
6404 return ixgbe_xmit_frame_ring(skb, netdev, adapter, tx_ring);
6405}
6406
Auke Kok9a799d72007-09-15 14:07:45 -07006407/**
Auke Kok9a799d72007-09-15 14:07:45 -07006408 * ixgbe_set_mac - Change the Ethernet Address of the NIC
6409 * @netdev: network interface device structure
6410 * @p: pointer to an address structure
6411 *
6412 * Returns 0 on success, negative on failure
6413 **/
6414static int ixgbe_set_mac(struct net_device *netdev, void *p)
6415{
6416 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006417 struct ixgbe_hw *hw = &adapter->hw;
Auke Kok9a799d72007-09-15 14:07:45 -07006418 struct sockaddr *addr = p;
6419
6420 if (!is_valid_ether_addr(addr->sa_data))
6421 return -EADDRNOTAVAIL;
6422
6423 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07006424 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
Auke Kok9a799d72007-09-15 14:07:45 -07006425
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006426 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, adapter->num_vfs,
6427 IXGBE_RAH_AV);
Auke Kok9a799d72007-09-15 14:07:45 -07006428
6429 return 0;
6430}
6431
Ben Hutchings6b73e102009-04-29 08:08:58 +00006432static int
6433ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
6434{
6435 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6436 struct ixgbe_hw *hw = &adapter->hw;
6437 u16 value;
6438 int rc;
6439
6440 if (prtad != hw->phy.mdio.prtad)
6441 return -EINVAL;
6442 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
6443 if (!rc)
6444 rc = value;
6445 return rc;
6446}
6447
6448static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
6449 u16 addr, u16 value)
6450{
6451 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6452 struct ixgbe_hw *hw = &adapter->hw;
6453
6454 if (prtad != hw->phy.mdio.prtad)
6455 return -EINVAL;
6456 return hw->phy.ops.write_reg(hw, addr, devad, value);
6457}
6458
6459static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
6460{
6461 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6462
6463 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
6464}
6465
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006466/**
6467 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00006468 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006469 * @netdev: network interface device structure
6470 *
6471 * Returns non-zero on failure
6472 **/
6473static int ixgbe_add_sanmac_netdev(struct net_device *dev)
6474{
6475 int err = 0;
6476 struct ixgbe_adapter *adapter = netdev_priv(dev);
6477 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6478
6479 if (is_valid_ether_addr(mac->san_addr)) {
6480 rtnl_lock();
6481 err = dev_addr_add(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6482 rtnl_unlock();
6483 }
6484 return err;
6485}
6486
6487/**
6488 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
Jiri Pirko31278e72009-06-17 01:12:19 +00006489 * netdev->dev_addrs
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006490 * @netdev: network interface device structure
6491 *
6492 * Returns non-zero on failure
6493 **/
6494static int ixgbe_del_sanmac_netdev(struct net_device *dev)
6495{
6496 int err = 0;
6497 struct ixgbe_adapter *adapter = netdev_priv(dev);
6498 struct ixgbe_mac_info *mac = &adapter->hw.mac;
6499
6500 if (is_valid_ether_addr(mac->san_addr)) {
6501 rtnl_lock();
6502 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
6503 rtnl_unlock();
6504 }
6505 return err;
6506}
6507
Auke Kok9a799d72007-09-15 14:07:45 -07006508#ifdef CONFIG_NET_POLL_CONTROLLER
6509/*
6510 * Polling 'interrupt' - used by things like netconsole to send skbs
6511 * without having to re-enable interrupts. It's not called while
6512 * the interrupt routine is executing.
6513 */
6514static void ixgbe_netpoll(struct net_device *netdev)
6515{
6516 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00006517 int i;
Auke Kok9a799d72007-09-15 14:07:45 -07006518
Alexander Duyck1a647bd2010-01-13 01:49:13 +00006519 /* if interface is down do nothing */
6520 if (test_bit(__IXGBE_DOWN, &adapter->state))
6521 return;
6522
Auke Kok9a799d72007-09-15 14:07:45 -07006523 adapter->flags |= IXGBE_FLAG_IN_NETPOLL;
Peter P Waskiewicz Jr8f9a7162009-07-30 12:25:09 +00006524 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
6525 int num_q_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
6526 for (i = 0; i < num_q_vectors; i++) {
6527 struct ixgbe_q_vector *q_vector = adapter->q_vector[i];
6528 ixgbe_msix_clean_many(0, q_vector);
6529 }
6530 } else {
6531 ixgbe_intr(adapter->pdev->irq, netdev);
6532 }
Auke Kok9a799d72007-09-15 14:07:45 -07006533 adapter->flags &= ~IXGBE_FLAG_IN_NETPOLL;
Auke Kok9a799d72007-09-15 14:07:45 -07006534}
6535#endif
6536
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006537static const struct net_device_ops ixgbe_netdev_ops = {
Joe Perchese8e9f692010-09-07 21:34:53 +00006538 .ndo_open = ixgbe_open,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006539 .ndo_stop = ixgbe_close,
Stephen Hemminger00829822008-11-20 20:14:53 -08006540 .ndo_start_xmit = ixgbe_xmit_frame,
Stephen Hemminger09a3b1f2009-03-21 13:40:01 -07006541 .ndo_select_queue = ixgbe_select_queue,
Chris Leeche90d4002009-03-10 16:00:24 +00006542 .ndo_set_rx_mode = ixgbe_set_rx_mode,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006543 .ndo_set_multicast_list = ixgbe_set_rx_mode,
6544 .ndo_validate_addr = eth_validate_addr,
6545 .ndo_set_mac_address = ixgbe_set_mac,
6546 .ndo_change_mtu = ixgbe_change_mtu,
6547 .ndo_tx_timeout = ixgbe_tx_timeout,
6548 .ndo_vlan_rx_register = ixgbe_vlan_rx_register,
6549 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
6550 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
Ben Hutchings6b73e102009-04-29 08:08:58 +00006551 .ndo_do_ioctl = ixgbe_ioctl,
Greg Rose7f016482010-05-04 22:12:06 +00006552 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
6553 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
6554 .ndo_set_vf_tx_rate = ixgbe_ndo_set_vf_bw,
6555 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006556#ifdef CONFIG_NET_POLL_CONTROLLER
6557 .ndo_poll_controller = ixgbe_netpoll,
6558#endif
Yi Zou332d4a72009-05-13 13:11:53 +00006559#ifdef IXGBE_FCOE
6560 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
6561 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
Yi Zou8450ff82009-08-31 12:32:14 +00006562 .ndo_fcoe_enable = ixgbe_fcoe_enable,
6563 .ndo_fcoe_disable = ixgbe_fcoe_disable,
Yi Zou61a1fa12009-10-28 18:24:56 +00006564 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
Yi Zou332d4a72009-05-13 13:11:53 +00006565#endif /* IXGBE_FCOE */
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006566};
6567
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006568static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter,
6569 const struct ixgbe_info *ii)
6570{
6571#ifdef CONFIG_PCI_IOV
6572 struct ixgbe_hw *hw = &adapter->hw;
6573 int err;
6574
6575 if (hw->mac.type != ixgbe_mac_82599EB || !max_vfs)
6576 return;
6577
6578 /* The 82599 supports up to 64 VFs per physical function
6579 * but this implementation limits allocation to 63 so that
6580 * basic networking resources are still available to the
6581 * physical function
6582 */
6583 adapter->num_vfs = (max_vfs > 63) ? 63 : max_vfs;
6584 adapter->flags |= IXGBE_FLAG_SRIOV_ENABLED;
6585 err = pci_enable_sriov(adapter->pdev, adapter->num_vfs);
6586 if (err) {
Emil Tantilov396e7992010-07-01 20:05:12 +00006587 e_err(probe, "Failed to enable PCI sriov: %d\n", err);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006588 goto err_novfs;
6589 }
6590 /* If call to enable VFs succeeded then allocate memory
6591 * for per VF control structures.
6592 */
6593 adapter->vfinfo =
6594 kcalloc(adapter->num_vfs,
6595 sizeof(struct vf_data_storage), GFP_KERNEL);
6596 if (adapter->vfinfo) {
6597 /* Now that we're sure SR-IOV is enabled
6598 * and memory allocated set up the mailbox parameters
6599 */
6600 ixgbe_init_mbx_params_pf(hw);
6601 memcpy(&hw->mbx.ops, ii->mbx_ops,
6602 sizeof(hw->mbx.ops));
6603
6604 /* Disable RSC when in SR-IOV mode */
6605 adapter->flags2 &= ~(IXGBE_FLAG2_RSC_CAPABLE |
6606 IXGBE_FLAG2_RSC_ENABLED);
6607 return;
6608 }
6609
6610 /* Oh oh */
Emil Tantilov396e7992010-07-01 20:05:12 +00006611 e_err(probe, "Unable to allocate memory for VF Data Storage - "
6612 "SRIOV disabled\n");
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006613 pci_disable_sriov(adapter->pdev);
6614
6615err_novfs:
6616 adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
6617 adapter->num_vfs = 0;
6618#endif /* CONFIG_PCI_IOV */
6619}
6620
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006621/**
Auke Kok9a799d72007-09-15 14:07:45 -07006622 * ixgbe_probe - Device Initialization Routine
6623 * @pdev: PCI device information struct
6624 * @ent: entry in ixgbe_pci_tbl
6625 *
6626 * Returns 0 on success, negative on failure
6627 *
6628 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
6629 * The OS initialization, configuring of the adapter private structure,
6630 * and a hardware reset occur.
6631 **/
6632static int __devinit ixgbe_probe(struct pci_dev *pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00006633 const struct pci_device_id *ent)
Auke Kok9a799d72007-09-15 14:07:45 -07006634{
6635 struct net_device *netdev;
6636 struct ixgbe_adapter *adapter = NULL;
6637 struct ixgbe_hw *hw;
6638 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
Auke Kok9a799d72007-09-15 14:07:45 -07006639 static int cards_found;
6640 int i, err, pci_using_dac;
John Fastabendc85a2612010-02-25 23:15:21 +00006641 unsigned int indices = num_possible_cpus();
Yi Zoueacd73f2009-05-13 13:11:06 +00006642#ifdef IXGBE_FCOE
6643 u16 device_caps;
6644#endif
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006645 u32 part_num, eec;
Auke Kok9a799d72007-09-15 14:07:45 -07006646
Andy Gospodarekbded64a2010-07-21 06:40:31 +00006647 /* Catch broken hardware that put the wrong VF device ID in
6648 * the PCIe SR-IOV capability.
6649 */
6650 if (pdev->is_virtfn) {
6651 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
6652 pci_name(pdev), pdev->vendor, pdev->device);
6653 return -EINVAL;
6654 }
6655
gouji-new9ce77662009-05-06 10:44:45 +00006656 err = pci_enable_device_mem(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006657 if (err)
6658 return err;
6659
Nick Nunley1b507732010-04-27 13:10:27 +00006660 if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6661 !dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
Auke Kok9a799d72007-09-15 14:07:45 -07006662 pci_using_dac = 1;
6663 } else {
Nick Nunley1b507732010-04-27 13:10:27 +00006664 err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -07006665 if (err) {
Nick Nunley1b507732010-04-27 13:10:27 +00006666 err = dma_set_coherent_mask(&pdev->dev,
6667 DMA_BIT_MASK(32));
Auke Kok9a799d72007-09-15 14:07:45 -07006668 if (err) {
Dan Carpenterb8bc0422010-07-27 00:05:56 +00006669 dev_err(&pdev->dev,
6670 "No usable DMA configuration, aborting\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006671 goto err_dma;
6672 }
6673 }
6674 pci_using_dac = 0;
6675 }
6676
gouji-new9ce77662009-05-06 10:44:45 +00006677 err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00006678 IORESOURCE_MEM), ixgbe_driver_name);
Auke Kok9a799d72007-09-15 14:07:45 -07006679 if (err) {
Dan Carpenterb8bc0422010-07-27 00:05:56 +00006680 dev_err(&pdev->dev,
6681 "pci_request_selected_regions failed 0x%x\n", err);
Auke Kok9a799d72007-09-15 14:07:45 -07006682 goto err_pci_reg;
6683 }
6684
Frans Pop19d5afd2009-10-02 10:04:12 -07006685 pci_enable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08006686
Auke Kok9a799d72007-09-15 14:07:45 -07006687 pci_set_master(pdev);
Wendy Xiongfb3b27b2008-04-23 11:09:24 -07006688 pci_save_state(pdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006689
John Fastabendc85a2612010-02-25 23:15:21 +00006690 if (ii->mac == ixgbe_mac_82598EB)
6691 indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
6692 else
6693 indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
6694
6695 indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
6696#ifdef IXGBE_FCOE
6697 indices += min_t(unsigned int, num_possible_cpus(),
6698 IXGBE_MAX_FCOE_INDICES);
6699#endif
John Fastabendc85a2612010-02-25 23:15:21 +00006700 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
Auke Kok9a799d72007-09-15 14:07:45 -07006701 if (!netdev) {
6702 err = -ENOMEM;
6703 goto err_alloc_etherdev;
6704 }
6705
Auke Kok9a799d72007-09-15 14:07:45 -07006706 SET_NETDEV_DEV(netdev, &pdev->dev);
6707
6708 pci_set_drvdata(pdev, netdev);
6709 adapter = netdev_priv(netdev);
6710
6711 adapter->netdev = netdev;
6712 adapter->pdev = pdev;
6713 hw = &adapter->hw;
6714 hw->back = adapter;
6715 adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
6716
Jeff Kirsher05857982008-09-11 19:57:00 -07006717 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
Joe Perchese8e9f692010-09-07 21:34:53 +00006718 pci_resource_len(pdev, 0));
Auke Kok9a799d72007-09-15 14:07:45 -07006719 if (!hw->hw_addr) {
6720 err = -EIO;
6721 goto err_ioremap;
6722 }
6723
6724 for (i = 1; i <= 5; i++) {
6725 if (pci_resource_len(pdev, i) == 0)
6726 continue;
6727 }
6728
Stephen Hemminger0edc3522008-11-19 22:24:29 -08006729 netdev->netdev_ops = &ixgbe_netdev_ops;
Auke Kok9a799d72007-09-15 14:07:45 -07006730 ixgbe_set_ethtool_ops(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006731 netdev->watchdog_timeo = 5 * HZ;
Auke Kok9a799d72007-09-15 14:07:45 -07006732 strcpy(netdev->name, pci_name(pdev));
6733
Auke Kok9a799d72007-09-15 14:07:45 -07006734 adapter->bd_number = cards_found;
6735
Auke Kok9a799d72007-09-15 14:07:45 -07006736 /* Setup hw api */
6737 memcpy(&hw->mac.ops, ii->mac_ops, sizeof(hw->mac.ops));
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006738 hw->mac.type = ii->mac;
Auke Kok9a799d72007-09-15 14:07:45 -07006739
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006740 /* EEPROM */
6741 memcpy(&hw->eeprom.ops, ii->eeprom_ops, sizeof(hw->eeprom.ops));
6742 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
6743 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
6744 if (!(eec & (1 << 8)))
6745 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
6746
6747 /* PHY */
6748 memcpy(&hw->phy.ops, ii->phy_ops, sizeof(hw->phy.ops));
Donald Skidmorec4900be2008-11-20 21:11:42 -08006749 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
Ben Hutchings6b73e102009-04-29 08:08:58 +00006750 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
6751 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
6752 hw->phy.mdio.mmds = 0;
6753 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
6754 hw->phy.mdio.dev = netdev;
6755 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
6756 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
Donald Skidmorec4900be2008-11-20 21:11:42 -08006757
6758 /* set up this timer and work struct before calling get_invariants
6759 * which might start the timer
6760 */
6761 init_timer(&adapter->sfp_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006762 adapter->sfp_timer.function = ixgbe_sfp_timer;
Donald Skidmorec4900be2008-11-20 21:11:42 -08006763 adapter->sfp_timer.data = (unsigned long) adapter;
6764
6765 INIT_WORK(&adapter->sfp_task, ixgbe_sfp_task);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006766
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006767 /* multispeed fiber has its own tasklet, called from GPI SDP1 context */
6768 INIT_WORK(&adapter->multispeed_fiber_task, ixgbe_multispeed_fiber_task);
6769
6770 /* a new SFP+ module arrival, called from GPI SDP2 context */
6771 INIT_WORK(&adapter->sfp_config_module_task,
Joe Perchese8e9f692010-09-07 21:34:53 +00006772 ixgbe_sfp_config_module_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006773
Don Skidmore8ca783a2009-05-26 20:40:47 -07006774 ii->get_invariants(hw);
Auke Kok9a799d72007-09-15 14:07:45 -07006775
6776 /* setup the private structure */
6777 err = ixgbe_sw_init(adapter);
6778 if (err)
6779 goto err_sw_init;
6780
Don Skidmoree86bff02010-02-11 04:14:08 +00006781 /* Make it possible the adapter to be woken up via WOL */
6782 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6783 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6784
Don Skidmorebf069c92009-05-07 10:39:54 +00006785 /*
6786 * If there is a fan on this device and it has failed log the
6787 * failure.
6788 */
6789 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
6790 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
6791 if (esdp & IXGBE_ESDP_SDP1)
Emil Tantilov396e7992010-07-01 20:05:12 +00006792 e_crit(probe, "Fan has stopped, replace the adapter\n");
Don Skidmorebf069c92009-05-07 10:39:54 +00006793 }
6794
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006795 /* reset_hw fills in the perm_addr as well */
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07006796 hw->phy.reset_if_overtemp = true;
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006797 err = hw->mac.ops.reset_hw(hw);
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07006798 hw->phy.reset_if_overtemp = false;
Don Skidmore8ca783a2009-05-26 20:40:47 -07006799 if (err == IXGBE_ERR_SFP_NOT_PRESENT &&
6800 hw->mac.type == ixgbe_mac_82598EB) {
6801 /*
6802 * Start a kernel thread to watch for a module to arrive.
6803 * Only do this for 82598, since 82599 will generate
6804 * interrupts on module arrival.
6805 */
6806 set_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
6807 mod_timer(&adapter->sfp_timer,
6808 round_jiffies(jiffies + (2 * HZ)));
6809 err = 0;
6810 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006811 e_dev_err("failed to initialize because an unsupported SFP+ "
6812 "module type was detected.\n");
6813 e_dev_err("Reload the driver after installing a supported "
6814 "module.\n");
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00006815 goto err_sw_init;
6816 } else if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006817 e_dev_err("HW Init failed: %d\n", err);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006818 goto err_sw_init;
6819 }
6820
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006821 ixgbe_probe_vf(adapter, ii);
6822
Emil Tantilov396e7992010-07-01 20:05:12 +00006823 netdev->features = NETIF_F_SG |
Joe Perchese8e9f692010-09-07 21:34:53 +00006824 NETIF_F_IP_CSUM |
6825 NETIF_F_HW_VLAN_TX |
6826 NETIF_F_HW_VLAN_RX |
6827 NETIF_F_HW_VLAN_FILTER;
Auke Kok9a799d72007-09-15 14:07:45 -07006828
Jesse Brandeburge9990a92008-08-26 04:27:24 -07006829 netdev->features |= NETIF_F_IPV6_CSUM;
Auke Kok9a799d72007-09-15 14:07:45 -07006830 netdev->features |= NETIF_F_TSO;
Auke Kok9a799d72007-09-15 14:07:45 -07006831 netdev->features |= NETIF_F_TSO6;
Herbert Xu78b6f4c2009-01-18 21:49:45 -08006832 netdev->features |= NETIF_F_GRO;
Jeff Kirsherad31c402008-06-05 04:05:30 -07006833
Jesse Brandeburg45a5ead2009-04-27 22:36:35 +00006834 if (adapter->hw.mac.type == ixgbe_mac_82599EB)
6835 netdev->features |= NETIF_F_SCTP_CSUM;
6836
Jeff Kirsherad31c402008-06-05 04:05:30 -07006837 netdev->vlan_features |= NETIF_F_TSO;
6838 netdev->vlan_features |= NETIF_F_TSO6;
Jesse Brandeburg22f32b7a52008-08-26 04:27:18 -07006839 netdev->vlan_features |= NETIF_F_IP_CSUM;
Alexander Duyckcd1da502009-08-25 04:47:50 +00006840 netdev->vlan_features |= NETIF_F_IPV6_CSUM;
Jeff Kirsherad31c402008-06-05 04:05:30 -07006841 netdev->vlan_features |= NETIF_F_SG;
6842
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006843 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
6844 adapter->flags &= ~(IXGBE_FLAG_RSS_ENABLED |
6845 IXGBE_FLAG_DCB_ENABLED);
Alexander Duyck2f90b862008-11-20 20:52:10 -08006846 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED)
6847 adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
6848
Jeff Kirsher7a6b6f52008-11-25 01:02:08 -08006849#ifdef CONFIG_IXGBE_DCB
Alexander Duyck2f90b862008-11-20 20:52:10 -08006850 netdev->dcbnl_ops = &dcbnl_ops;
6851#endif
6852
Yi Zoueacd73f2009-05-13 13:11:06 +00006853#ifdef IXGBE_FCOE
Yi Zou0d551582009-07-22 14:07:12 +00006854 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
Yi Zoueacd73f2009-05-13 13:11:06 +00006855 if (hw->mac.ops.get_device_caps) {
6856 hw->mac.ops.get_device_caps(hw, &device_caps);
Yi Zou0d551582009-07-22 14:07:12 +00006857 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
6858 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
Yi Zoueacd73f2009-05-13 13:11:06 +00006859 }
6860 }
Yi Zou5e09d7f2010-07-19 13:59:52 +00006861 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
6862 netdev->vlan_features |= NETIF_F_FCOE_CRC;
6863 netdev->vlan_features |= NETIF_F_FSO;
6864 netdev->vlan_features |= NETIF_F_FCOE_MTU;
6865 }
Yi Zoueacd73f2009-05-13 13:11:06 +00006866#endif /* IXGBE_FCOE */
Yi Zou7b872a52010-09-22 17:57:58 +00006867 if (pci_using_dac) {
Auke Kok9a799d72007-09-15 14:07:45 -07006868 netdev->features |= NETIF_F_HIGHDMA;
Yi Zou7b872a52010-09-22 17:57:58 +00006869 netdev->vlan_features |= NETIF_F_HIGHDMA;
6870 }
Auke Kok9a799d72007-09-15 14:07:45 -07006871
Peter P Waskiewicz Jr0c19d6a2009-07-30 12:25:28 +00006872 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
Alexander Duyckf8212f92009-04-27 22:42:37 +00006873 netdev->features |= NETIF_F_LRO;
6874
Auke Kok9a799d72007-09-15 14:07:45 -07006875 /* make sure the EEPROM is good */
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006876 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006877 e_dev_err("The EEPROM Checksum Is Not Valid\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006878 err = -EIO;
6879 goto err_eeprom;
6880 }
6881
6882 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
6883 memcpy(netdev->perm_addr, hw->mac.perm_addr, netdev->addr_len);
6884
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006885 if (ixgbe_validate_mac_addr(netdev->perm_addr)) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006886 e_dev_err("invalid MAC address\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006887 err = -EIO;
6888 goto err_eeprom;
6889 }
6890
Peter Waskiewicz61fac742010-04-27 00:38:15 +00006891 /* power down the optics */
6892 if (hw->phy.multispeed_fiber)
6893 hw->mac.ops.disable_tx_laser(hw);
6894
Auke Kok9a799d72007-09-15 14:07:45 -07006895 init_timer(&adapter->watchdog_timer);
Joe Perchesc061b182010-08-23 18:20:03 +00006896 adapter->watchdog_timer.function = ixgbe_watchdog;
Auke Kok9a799d72007-09-15 14:07:45 -07006897 adapter->watchdog_timer.data = (unsigned long)adapter;
6898
6899 INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
Jesse Brandeburgcf8280e2008-09-11 19:55:32 -07006900 INIT_WORK(&adapter->watchdog_task, ixgbe_watchdog_task);
Auke Kok9a799d72007-09-15 14:07:45 -07006901
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08006902 err = ixgbe_init_interrupt_scheme(adapter);
6903 if (err)
6904 goto err_sw_init;
Auke Kok9a799d72007-09-15 14:07:45 -07006905
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006906 switch (pdev->device) {
6907 case IXGBE_DEV_ID_82599_KX4:
Waskiewicz Jr, Peter P495dce12009-04-23 11:15:18 +00006908 adapter->wol = (IXGBE_WUFC_MAG | IXGBE_WUFC_EX |
Joe Perchese8e9f692010-09-07 21:34:53 +00006909 IXGBE_WUFC_MC | IXGBE_WUFC_BC);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006910 break;
6911 default:
6912 adapter->wol = 0;
6913 break;
6914 }
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006915 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
6916
PJ Waskiewicz04f165e2009-04-09 22:27:57 +00006917 /* pick up the PCI bus settings for reporting later */
6918 hw->mac.ops.get_bus_info(hw);
6919
Auke Kok9a799d72007-09-15 14:07:45 -07006920 /* print bus type/speed/width info */
Emil Tantilov849c4542010-06-03 16:53:41 +00006921 e_dev_info("(PCI Express:%s:%s) %pM\n",
Joe Perchese8e9f692010-09-07 21:34:53 +00006922 (hw->bus.speed == ixgbe_bus_speed_5000 ? "5.0Gb/s" :
6923 hw->bus.speed == ixgbe_bus_speed_2500 ? "2.5Gb/s" :
6924 "Unknown"),
6925 (hw->bus.width == ixgbe_bus_width_pcie_x8 ? "Width x8" :
6926 hw->bus.width == ixgbe_bus_width_pcie_x4 ? "Width x4" :
6927 hw->bus.width == ixgbe_bus_width_pcie_x1 ? "Width x1" :
6928 "Unknown"),
6929 netdev->dev_addr);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006930 ixgbe_read_pba_num_generic(hw, &part_num);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006931 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
Emil Tantilov849c4542010-06-03 16:53:41 +00006932 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, "
6933 "PBA No: %06x-%03x\n",
6934 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
6935 (part_num >> 8), (part_num & 0xff));
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006936 else
Emil Tantilov849c4542010-06-03 16:53:41 +00006937 e_dev_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n",
6938 hw->mac.type, hw->phy.type,
6939 (part_num >> 8), (part_num & 0xff));
Auke Kok9a799d72007-09-15 14:07:45 -07006940
PJ Waskiewicze8e26352009-02-27 15:45:05 +00006941 if (hw->bus.width <= ixgbe_bus_width_pcie_x4) {
Emil Tantilov849c4542010-06-03 16:53:41 +00006942 e_dev_warn("PCI-Express bandwidth available for this card is "
6943 "not sufficient for optimal performance.\n");
6944 e_dev_warn("For optimal performance a x8 PCI-Express slot "
6945 "is required.\n");
Auke Kok0c254d82008-02-11 09:25:56 -08006946 }
6947
Peter P Waskiewicz Jr34b03682009-02-05 23:54:42 -08006948 /* save off EEPROM version number */
6949 hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
6950
Auke Kok9a799d72007-09-15 14:07:45 -07006951 /* reset the hardware with the new settings */
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00006952 err = hw->mac.ops.start_hw(hw);
Jesse Brandeburgc44ade92008-09-11 19:59:59 -07006953
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00006954 if (err == IXGBE_ERR_EEPROM_VERSION) {
6955 /* We are running on a pre-production device, log a warning */
Emil Tantilov849c4542010-06-03 16:53:41 +00006956 e_dev_warn("This device is a pre-production adapter/LOM. "
6957 "Please be aware there may be issues associated "
6958 "with your hardware. If you are experiencing "
6959 "problems please contact your Intel or hardware "
6960 "representative who provided you with this "
6961 "hardware.\n");
Peter P Waskiewicz Jr794caeb2009-06-04 16:02:24 +00006962 }
Auke Kok9a799d72007-09-15 14:07:45 -07006963 strcpy(netdev->name, "eth%d");
6964 err = register_netdev(netdev);
6965 if (err)
6966 goto err_register;
6967
Jesse Brandeburg54386462009-04-17 20:44:27 +00006968 /* carrier off reporting is important to ethtool even BEFORE open */
6969 netif_carrier_off(netdev);
6970
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00006971 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
6972 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
6973 INIT_WORK(&adapter->fdir_reinit_task, ixgbe_fdir_reinit_task);
6974
Mallikarjuna R Chilakala119fc602010-05-20 23:07:06 -07006975 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
Joe Perchese8e9f692010-09-07 21:34:53 +00006976 INIT_WORK(&adapter->check_overtemp_task,
6977 ixgbe_check_overtemp_task);
Jeff Garzik5dd2d332008-10-16 05:09:31 -04006978#ifdef CONFIG_IXGBE_DCA
Denis V. Lunev652f0932008-03-27 14:39:17 +03006979 if (dca_add_requester(&pdev->dev) == 0) {
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006980 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
Jeb Cramerbd0362d2008-03-03 15:04:02 -08006981 ixgbe_setup_dca(adapter);
6982 }
6983#endif
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006984 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
Emil Tantilov396e7992010-07-01 20:05:12 +00006985 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
Greg Rose1cdd1ec2010-01-09 02:26:46 +00006986 for (i = 0; i < adapter->num_vfs; i++)
6987 ixgbe_vf_configuration(pdev, (i | 0x10000000));
6988 }
6989
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00006990 /* add san mac addr to netdev */
6991 ixgbe_add_sanmac_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07006992
Emil Tantilov849c4542010-06-03 16:53:41 +00006993 e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
Auke Kok9a799d72007-09-15 14:07:45 -07006994 cards_found++;
6995 return 0;
6996
6997err_register:
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08006998 ixgbe_release_hw_control(adapter);
Alexander Duyck7a921c92009-05-06 10:43:28 +00006999 ixgbe_clear_interrupt_scheme(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07007000err_sw_init:
7001err_eeprom:
Greg Rose1cdd1ec2010-01-09 02:26:46 +00007002 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7003 ixgbe_disable_sriov(adapter);
Donald Skidmorec4900be2008-11-20 21:11:42 -08007004 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
7005 del_timer_sync(&adapter->sfp_timer);
7006 cancel_work_sync(&adapter->sfp_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007007 cancel_work_sync(&adapter->multispeed_fiber_task);
7008 cancel_work_sync(&adapter->sfp_config_module_task);
Auke Kok9a799d72007-09-15 14:07:45 -07007009 iounmap(hw->hw_addr);
7010err_ioremap:
7011 free_netdev(netdev);
7012err_alloc_etherdev:
Joe Perchese8e9f692010-09-07 21:34:53 +00007013 pci_release_selected_regions(pdev,
7014 pci_select_bars(pdev, IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07007015err_pci_reg:
7016err_dma:
7017 pci_disable_device(pdev);
7018 return err;
7019}
7020
7021/**
7022 * ixgbe_remove - Device Removal Routine
7023 * @pdev: PCI device information struct
7024 *
7025 * ixgbe_remove is called by the PCI subsystem to alert the driver
7026 * that it should release a PCI device. The could be caused by a
7027 * Hot-Plug event, or because the driver is going to be removed from
7028 * memory.
7029 **/
7030static void __devexit ixgbe_remove(struct pci_dev *pdev)
7031{
7032 struct net_device *netdev = pci_get_drvdata(pdev);
7033 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7034
7035 set_bit(__IXGBE_DOWN, &adapter->state);
Donald Skidmorec4900be2008-11-20 21:11:42 -08007036 /* clear the module not found bit to make sure the worker won't
7037 * reschedule
7038 */
7039 clear_bit(__IXGBE_SFP_MODULE_NOT_FOUND, &adapter->state);
Auke Kok9a799d72007-09-15 14:07:45 -07007040 del_timer_sync(&adapter->watchdog_timer);
7041
Donald Skidmorec4900be2008-11-20 21:11:42 -08007042 del_timer_sync(&adapter->sfp_timer);
7043 cancel_work_sync(&adapter->watchdog_task);
7044 cancel_work_sync(&adapter->sfp_task);
PJ Waskiewicze8e26352009-02-27 15:45:05 +00007045 cancel_work_sync(&adapter->multispeed_fiber_task);
7046 cancel_work_sync(&adapter->sfp_config_module_task);
Peter P Waskiewicz Jrc4cf55e2009-06-04 16:01:43 +00007047 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
7048 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
7049 cancel_work_sync(&adapter->fdir_reinit_task);
Auke Kok9a799d72007-09-15 14:07:45 -07007050 flush_scheduled_work();
7051
Jeff Garzik5dd2d332008-10-16 05:09:31 -04007052#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007053 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
7054 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
7055 dca_remove_requester(&pdev->dev);
7056 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1);
7057 }
7058
7059#endif
Yi Zou332d4a72009-05-13 13:11:53 +00007060#ifdef IXGBE_FCOE
7061 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7062 ixgbe_cleanup_fcoe(adapter);
7063
7064#endif /* IXGBE_FCOE */
PJ Waskiewicz0365e6e2009-05-17 12:32:25 +00007065
7066 /* remove the added san mac */
7067 ixgbe_del_sanmac_netdev(netdev);
7068
Donald Skidmorec4900be2008-11-20 21:11:42 -08007069 if (netdev->reg_state == NETREG_REGISTERED)
7070 unregister_netdev(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07007071
Greg Rose1cdd1ec2010-01-09 02:26:46 +00007072 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7073 ixgbe_disable_sriov(adapter);
7074
Alexander Duyck7a921c92009-05-06 10:43:28 +00007075 ixgbe_clear_interrupt_scheme(adapter);
Ayyappan Veeraiyan5eba3692008-02-01 15:59:04 -08007076
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08007077 ixgbe_release_hw_control(adapter);
Auke Kok9a799d72007-09-15 14:07:45 -07007078
7079 iounmap(adapter->hw.hw_addr);
gouji-new9ce77662009-05-06 10:44:45 +00007080 pci_release_selected_regions(pdev, pci_select_bars(pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00007081 IORESOURCE_MEM));
Auke Kok9a799d72007-09-15 14:07:45 -07007082
Emil Tantilov849c4542010-06-03 16:53:41 +00007083 e_dev_info("complete\n");
Ayyappan Veeraiyan021230d2008-03-03 15:03:45 -08007084
Auke Kok9a799d72007-09-15 14:07:45 -07007085 free_netdev(netdev);
7086
Frans Pop19d5afd2009-10-02 10:04:12 -07007087 pci_disable_pcie_error_reporting(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007088
Auke Kok9a799d72007-09-15 14:07:45 -07007089 pci_disable_device(pdev);
7090}
7091
7092/**
7093 * ixgbe_io_error_detected - called when PCI error is detected
7094 * @pdev: Pointer to PCI device
7095 * @state: The current pci connection state
7096 *
7097 * This function is called after a PCI bus error affecting
7098 * this device has been detected.
7099 */
7100static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
Joe Perchese8e9f692010-09-07 21:34:53 +00007101 pci_channel_state_t state)
Auke Kok9a799d72007-09-15 14:07:45 -07007102{
7103 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08007104 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07007105
7106 netif_device_detach(netdev);
7107
Breno Leitao3044b8d2009-05-06 10:44:26 +00007108 if (state == pci_channel_io_perm_failure)
7109 return PCI_ERS_RESULT_DISCONNECT;
7110
Auke Kok9a799d72007-09-15 14:07:45 -07007111 if (netif_running(netdev))
7112 ixgbe_down(adapter);
7113 pci_disable_device(pdev);
7114
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07007115 /* Request a slot reset. */
Auke Kok9a799d72007-09-15 14:07:45 -07007116 return PCI_ERS_RESULT_NEED_RESET;
7117}
7118
7119/**
7120 * ixgbe_io_slot_reset - called after the pci bus has been reset.
7121 * @pdev: Pointer to PCI device
7122 *
7123 * Restart the card from scratch, as if from a cold-boot.
7124 */
7125static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
7126{
7127 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08007128 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007129 pci_ers_result_t result;
7130 int err;
Auke Kok9a799d72007-09-15 14:07:45 -07007131
gouji-new9ce77662009-05-06 10:44:45 +00007132 if (pci_enable_device_mem(pdev)) {
Emil Tantilov396e7992010-07-01 20:05:12 +00007133 e_err(probe, "Cannot re-enable PCI device after reset.\n");
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007134 result = PCI_ERS_RESULT_DISCONNECT;
7135 } else {
7136 pci_set_master(pdev);
7137 pci_restore_state(pdev);
Breno Leitaoc0e1f682009-11-10 08:37:47 +00007138 pci_save_state(pdev);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007139
Don Skidmoredd4d8ca2009-04-29 00:22:31 -07007140 pci_wake_from_d3(pdev, false);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007141
7142 ixgbe_reset(adapter);
PJ Waskiewicz88512532009-03-13 22:15:10 +00007143 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007144 result = PCI_ERS_RESULT_RECOVERED;
Auke Kok9a799d72007-09-15 14:07:45 -07007145 }
Auke Kok9a799d72007-09-15 14:07:45 -07007146
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007147 err = pci_cleanup_aer_uncorrect_error_status(pdev);
7148 if (err) {
Emil Tantilov849c4542010-06-03 16:53:41 +00007149 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
7150 "failed 0x%0x\n", err);
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007151 /* non-fatal, continue */
7152 }
Auke Kok9a799d72007-09-15 14:07:45 -07007153
Peter P Waskiewicz Jr6fabd712008-12-10 01:13:08 -08007154 return result;
Auke Kok9a799d72007-09-15 14:07:45 -07007155}
7156
7157/**
7158 * ixgbe_io_resume - called when traffic can start flowing again.
7159 * @pdev: Pointer to PCI device
7160 *
7161 * This callback is called when the error recovery driver tells us that
7162 * its OK to resume normal operation.
7163 */
7164static void ixgbe_io_resume(struct pci_dev *pdev)
7165{
7166 struct net_device *netdev = pci_get_drvdata(pdev);
Wang Chen454d7c92008-11-12 23:37:49 -08007167 struct ixgbe_adapter *adapter = netdev_priv(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07007168
7169 if (netif_running(netdev)) {
7170 if (ixgbe_up(adapter)) {
Emil Tantilov396e7992010-07-01 20:05:12 +00007171 e_info(probe, "ixgbe_up failed after reset\n");
Auke Kok9a799d72007-09-15 14:07:45 -07007172 return;
7173 }
7174 }
7175
7176 netif_device_attach(netdev);
Auke Kok9a799d72007-09-15 14:07:45 -07007177}
7178
7179static struct pci_error_handlers ixgbe_err_handler = {
7180 .error_detected = ixgbe_io_error_detected,
7181 .slot_reset = ixgbe_io_slot_reset,
7182 .resume = ixgbe_io_resume,
7183};
7184
7185static struct pci_driver ixgbe_driver = {
7186 .name = ixgbe_driver_name,
7187 .id_table = ixgbe_pci_tbl,
7188 .probe = ixgbe_probe,
7189 .remove = __devexit_p(ixgbe_remove),
7190#ifdef CONFIG_PM
7191 .suspend = ixgbe_suspend,
7192 .resume = ixgbe_resume,
7193#endif
7194 .shutdown = ixgbe_shutdown,
7195 .err_handler = &ixgbe_err_handler
7196};
7197
7198/**
7199 * ixgbe_init_module - Driver Registration Routine
7200 *
7201 * ixgbe_init_module is the first routine called when the driver is
7202 * loaded. All it does is register with the PCI subsystem.
7203 **/
7204static int __init ixgbe_init_module(void)
7205{
7206 int ret;
Joe Perchesc7689572010-09-07 21:35:17 +00007207 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
Emil Tantilov849c4542010-06-03 16:53:41 +00007208 pr_info("%s\n", ixgbe_copyright);
Auke Kok9a799d72007-09-15 14:07:45 -07007209
Jeff Garzik5dd2d332008-10-16 05:09:31 -04007210#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007211 dca_register_notify(&dca_notifier);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007212#endif
Jeff Garzik5dd2d332008-10-16 05:09:31 -04007213
Auke Kok9a799d72007-09-15 14:07:45 -07007214 ret = pci_register_driver(&ixgbe_driver);
7215 return ret;
7216}
Peter P Waskiewiczb4617242008-09-11 20:04:46 -07007217
Auke Kok9a799d72007-09-15 14:07:45 -07007218module_init(ixgbe_init_module);
7219
7220/**
7221 * ixgbe_exit_module - Driver Exit Cleanup Routine
7222 *
7223 * ixgbe_exit_module is called just before the driver is removed
7224 * from memory.
7225 **/
7226static void __exit ixgbe_exit_module(void)
7227{
Jeff Garzik5dd2d332008-10-16 05:09:31 -04007228#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007229 dca_unregister_notify(&dca_notifier);
7230#endif
Auke Kok9a799d72007-09-15 14:07:45 -07007231 pci_unregister_driver(&ixgbe_driver);
7232}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007233
Jeff Garzik5dd2d332008-10-16 05:09:31 -04007234#ifdef CONFIG_IXGBE_DCA
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007235static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
Joe Perchese8e9f692010-09-07 21:34:53 +00007236 void *p)
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007237{
7238 int ret_val;
7239
7240 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
Joe Perchese8e9f692010-09-07 21:34:53 +00007241 __ixgbe_notify_dca);
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007242
7243 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
7244}
Jeb Cramerbd0362d2008-03-03 15:04:02 -08007245
Alexander Duyckb4533682009-03-31 21:32:42 +00007246#endif /* CONFIG_IXGBE_DCA */
Emil Tantilov849c4542010-06-03 16:53:41 +00007247
Alexander Duyckb4533682009-03-31 21:32:42 +00007248/**
Emil Tantilov849c4542010-06-03 16:53:41 +00007249 * ixgbe_get_hw_dev return device
Alexander Duyckb4533682009-03-31 21:32:42 +00007250 * used by hardware layer to print debugging information
7251 **/
Emil Tantilov849c4542010-06-03 16:53:41 +00007252struct net_device *ixgbe_get_hw_dev(struct ixgbe_hw *hw)
Alexander Duyckb4533682009-03-31 21:32:42 +00007253{
7254 struct ixgbe_adapter *adapter = hw->back;
Emil Tantilov849c4542010-06-03 16:53:41 +00007255 return adapter->netdev;
Alexander Duyckb4533682009-03-31 21:32:42 +00007256}
7257
Auke Kok9a799d72007-09-15 14:07:45 -07007258module_exit(ixgbe_exit_module);
7259
7260/* ixgbe_main.c */