blob: 2b8453510e0900211b21ad6d742070fac1556151 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01002 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 */
5
6/*
7 * Mostly written by Mark Lord <mlord@pobox.com>
8 * and Gadi Oxman <gadio@netvision.net.il>
9 * and Andre Hedrick <andre@linux-ide.org>
10 *
11 * See linux/MAINTAINERS for address of current maintainer.
12 *
13 * This is the multiple IDE interface driver, as evolved from hd.c.
14 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
15 * (usually 14 & 15).
16 * There can be up to two drives per interface, as per the ATA-2 spec.
17 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 * ...
19 *
20 * From hd.c:
21 * |
22 * | It traverses the request-list, using interrupts to jump between functions.
23 * | As nearly all functions can be called within interrupts, we may not sleep.
24 * | Special care is recommended. Have Fun!
25 * |
26 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
27 * |
28 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
29 * | in the early extended-partition checks and added DM partitions.
30 * |
31 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
32 * |
33 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
34 * | and general streamlining by Mark Lord (mlord@pobox.com).
35 *
36 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
37 *
38 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
39 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
40 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
41 *
42 * This was a rewrite of just about everything from hd.c, though some original
43 * code is still sprinkled about. Think of it as a major evolution, with
44 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 */
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#define _IDE_C /* Tell ide.h it's really us */
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/module.h>
50#include <linux/types.h>
51#include <linux/string.h>
52#include <linux/kernel.h>
53#include <linux/timer.h>
54#include <linux/mm.h>
55#include <linux/interrupt.h>
56#include <linux/major.h>
57#include <linux/errno.h>
58#include <linux/genhd.h>
59#include <linux/blkpg.h>
60#include <linux/slab.h>
61#include <linux/init.h>
62#include <linux/pci.h>
63#include <linux/delay.h>
64#include <linux/ide.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#include <linux/completion.h>
66#include <linux/reboot.h>
67#include <linux/cdrom.h>
68#include <linux/seq_file.h>
69#include <linux/device.h>
70#include <linux/bitops.h>
71
72#include <asm/byteorder.h>
73#include <asm/irq.h>
74#include <asm/uaccess.h>
75#include <asm/io.h>
76
77
78/* default maximum number of failures */
79#define IDE_DEFAULT_MAX_FAILURES 1
80
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +020081struct class *ide_port_class;
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
84 IDE2_MAJOR, IDE3_MAJOR,
85 IDE4_MAJOR, IDE5_MAJOR,
86 IDE6_MAJOR, IDE7_MAJOR,
87 IDE8_MAJOR, IDE9_MAJOR };
88
Matthias Kaehlckeef298882007-07-09 23:17:55 +020089DEFINE_MUTEX(ide_cfg_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Bartlomiej Zolnierkiewicz931ee0d2008-07-15 21:21:47 +020091__cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
92EXPORT_SYMBOL(ide_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Linus Torvalds1da177e2005-04-16 15:20:36 -070094ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
95
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +020096static void ide_port_init_devices_data(ide_hwif_t *);
97
Linus Torvalds1da177e2005-04-16 15:20:36 -070098/*
99 * Do not even *think* about calling this!
100 */
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100101void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 /* bulk initialize hwif & drive info with zeros */
104 memset(hwif, 0, sizeof(ide_hwif_t));
105
106 /* fill in any non-zero initial values */
107 hwif->index = index;
108 hwif->major = ide_hwif_to_major[index];
109
110 hwif->name[0] = 'i';
111 hwif->name[1] = 'd';
112 hwif->name[2] = 'e';
113 hwif->name[3] = '0' + index;
114
115 hwif->bus_state = BUSSTATE_ON;
116
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800117 init_completion(&hwif->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118
119 default_hwif_iops(hwif);
120 default_hwif_transport(hwif);
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +0200121
122 ide_port_init_devices_data(hwif);
123}
124EXPORT_SYMBOL_GPL(ide_init_port_data);
125
126static void ide_port_init_devices_data(ide_hwif_t *hwif)
127{
128 int unit;
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 for (unit = 0; unit < MAX_DRIVES; ++unit) {
131 ide_drive_t *drive = &hwif->drives[unit];
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +0200132 u8 j = (hwif->index * MAX_DRIVES) + unit;
133
134 memset(drive, 0, sizeof(*drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
136 drive->media = ide_disk;
137 drive->select.all = (unit<<4)|0xa0;
138 drive->hwif = hwif;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 drive->ready_stat = READY_STAT;
140 drive->bad_wstat = BAD_W_STAT;
141 drive->special.b.recalibrate = 1;
142 drive->special.b.set_geometry = 1;
143 drive->name[0] = 'h';
144 drive->name[1] = 'd';
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +0200145 drive->name[2] = 'a' + j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +0200147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 INIT_LIST_HEAD(&drive->list);
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800149 init_completion(&drive->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 }
151}
Bartlomiej Zolnierkiewicz43514ed2008-04-18 00:46:22 +0200152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153static void __init init_ide_data (void)
154{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
157 /* Initialise all interface structures */
158 for (index = 0; index < MAX_HWIFS; ++index) {
Bartlomiej Zolnierkiewicz05734262008-04-18 00:46:25 +0200159 ide_hwif_t *hwif = &ide_hwifs[index];
160
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100161 ide_init_port_data(hwif, index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163}
164
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +0100165void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
Bartlomiej Zolnierkiewicz96e5ad32008-02-01 23:09:35 +0100166{
167 ide_hwgroup_t *hwgroup = hwif->hwgroup;
168
169 spin_lock_irq(&ide_lock);
170 /*
171 * Remove us from the hwgroup, and free
172 * the hwgroup if we were the only member
173 */
174 if (hwif->next == hwif) {
175 BUG_ON(hwgroup->hwif != hwif);
176 kfree(hwgroup);
177 } else {
178 /* There is another interface in hwgroup.
179 * Unlink us, and set hwgroup->drive and ->hwif to
180 * something sane.
181 */
182 ide_hwif_t *g = hwgroup->hwif;
183
184 while (g->next != hwif)
185 g = g->next;
186 g->next = hwif->next;
187 if (hwgroup->hwif == hwif) {
188 /* Chose a random hwif for hwgroup->hwif.
189 * It's guaranteed that there are no drives
190 * left in the hwgroup.
191 */
192 BUG_ON(hwgroup->drive != NULL);
193 hwgroup->hwif = g;
194 }
195 BUG_ON(hwgroup->hwif == hwif);
196 }
197 spin_unlock_irq(&ide_lock);
198}
199
Bartlomiej Zolnierkiewicz71bf9f62008-04-18 00:46:22 +0200200/* Called with ide_lock held. */
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +0200201static void __ide_port_unregister_devices(ide_hwif_t *hwif)
Bartlomiej Zolnierkiewicz71bf9f62008-04-18 00:46:22 +0200202{
203 int i;
204
205 for (i = 0; i < MAX_DRIVES; i++) {
206 ide_drive_t *drive = &hwif->drives[i];
207
208 if (drive->present) {
209 spin_unlock_irq(&ide_lock);
210 device_unregister(&drive->gendev);
211 wait_for_completion(&drive->gendev_rel_comp);
212 spin_lock_irq(&ide_lock);
213 }
214 }
215}
216
Bartlomiej Zolnierkiewicz2dde7862008-04-18 00:46:23 +0200217void ide_port_unregister_devices(ide_hwif_t *hwif)
218{
219 mutex_lock(&ide_cfg_mtx);
220 spin_lock_irq(&ide_lock);
221 __ide_port_unregister_devices(hwif);
222 hwif->present = 0;
223 ide_port_init_devices_data(hwif);
224 spin_unlock_irq(&ide_lock);
225 mutex_unlock(&ide_cfg_mtx);
226}
227EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
228
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229/**
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700230 * ide_unregister - free an IDE interface
Bartlomiej Zolnierkiewicz387750c2008-04-27 15:38:31 +0200231 * @hwif: IDE interface
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 *
233 * Perform the final unregister of an IDE interface. At the moment
234 * we don't refcount interfaces so this will also get split up.
235 *
236 * Locking:
237 * The caller must not hold the IDE locks
238 * The drive present/vanishing is not yet properly locked
239 * Take care with the callbacks. These have been split to avoid
240 * deadlocking the IDE layer. The shutdown callback is called
241 * before we take the lock and free resources. It is up to the
242 * caller to be sure there is no pending I/O here, and that
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700243 * the interface will not be reopened (present/vanishing locking
244 * isn't yet done BTW). After we commit to the final kill we
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 * call the cleanup callback with the ide locks held.
246 *
247 * Unregister restores the hwif structures to the default state.
248 * This is raving bonkers.
249 */
250
Bartlomiej Zolnierkiewicz387750c2008-04-27 15:38:31 +0200251void ide_unregister(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
Bartlomiej Zolnierkiewicz387750c2008-04-27 15:38:31 +0200253 ide_hwif_t *g;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 ide_hwgroup_t *hwgroup;
Bartlomiej Zolnierkiewicz71bf9f62008-04-18 00:46:22 +0200255 int irq_count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 BUG_ON(in_interrupt());
258 BUG_ON(irqs_disabled());
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
Bartlomiej Zolnierkiewiczbd8a59e2008-07-05 20:30:51 +0200260 mutex_lock(&ide_cfg_mtx);
261
262 spin_lock_irq(&ide_lock);
263 if (hwif->present) {
264 __ide_port_unregister_devices(hwif);
265 hwif->present = 0;
266 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 spin_unlock_irq(&ide_lock);
268
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200269 ide_proc_unregister_port(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270
271 hwgroup = hwif->hwgroup;
272 /*
273 * free the irq if we were the only hwif using it
274 */
275 g = hwgroup->hwif;
276 do {
277 if (g->irq == hwif->irq)
278 ++irq_count;
279 g = g->next;
280 } while (g != hwgroup->hwif);
281 if (irq_count == 1)
282 free_irq(hwif->irq, hwgroup);
283
Bartlomiej Zolnierkiewicz96e5ad32008-02-01 23:09:35 +0100284 ide_remove_port_from_hwgroup(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +0200286 device_unregister(hwif->portdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 device_unregister(&hwif->gendev);
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800288 wait_for_completion(&hwif->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289
290 /*
291 * Remove us from the kernel's knowledge
292 */
293 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
294 kfree(hwif->sg_table);
295 unregister_blkdev(hwif->major, hwif->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Bartlomiej Zolnierkiewicz93de00f2008-04-18 00:46:24 +0200297 if (hwif->dma_base)
Bartlomiej Zolnierkiewicz0d1bad22008-04-26 22:25:19 +0200298 ide_release_dma_engine(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Bartlomiej Zolnierkiewicz2b54ed92008-07-05 20:30:51 +0200300 spin_lock_irq(&ide_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 /* restore hwif data to pristine status */
Bartlomiej Zolnierkiewicz387750c2008-04-27 15:38:31 +0200302 ide_init_port_data(hwif, hwif->index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 spin_unlock_irq(&ide_lock);
Bartlomiej Zolnierkiewicz2b54ed92008-07-05 20:30:51 +0200304
Matthias Kaehlckeef298882007-07-09 23:17:55 +0200305 mutex_unlock(&ide_cfg_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306}
307
308EXPORT_SYMBOL(ide_unregister);
309
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100310void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
311{
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200312 memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100313 hwif->irq = hw->irq;
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100314 hwif->chipset = hw->chipset;
315 hwif->gendev.parent = hw->dev;
316 hwif->ack_intr = hw->ack_intr;
317}
318EXPORT_SYMBOL_GPL(ide_init_port_hw);
319
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320/*
321 * Locks for IDE setting functionality
322 */
323
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200324DEFINE_MUTEX(ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200326EXPORT_SYMBOL_GPL(ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200327
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 * ide_spin_wait_hwgroup - wait for group
330 * @drive: drive in the group
331 *
332 * Wait for an IDE device group to go non busy and then return
333 * holding the ide_lock which guards the hwgroup->busy status
334 * and right to use it.
335 */
336
337int ide_spin_wait_hwgroup (ide_drive_t *drive)
338{
339 ide_hwgroup_t *hwgroup = HWGROUP(drive);
340 unsigned long timeout = jiffies + (3 * HZ);
341
342 spin_lock_irq(&ide_lock);
343
344 while (hwgroup->busy) {
345 unsigned long lflags;
346 spin_unlock_irq(&ide_lock);
347 local_irq_set(lflags);
348 if (time_after(jiffies, timeout)) {
349 local_irq_restore(lflags);
350 printk(KERN_ERR "%s: channel busy\n", drive->name);
351 return -EBUSY;
352 }
353 local_irq_restore(lflags);
354 spin_lock_irq(&ide_lock);
355 }
356 return 0;
357}
358
359EXPORT_SYMBOL(ide_spin_wait_hwgroup);
360
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200361int set_io_32bit(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200363 if (drive->no_io_32bit)
364 return -EPERM;
365
366 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
367 return -EINVAL;
368
Bartlomiej Zolnierkiewicz644a9d72007-12-12 23:32:00 +0100369 if (ide_spin_wait_hwgroup(drive))
370 return -EBUSY;
371
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 drive->io_32bit = arg;
Bartlomiej Zolnierkiewicz644a9d72007-12-12 23:32:00 +0100373
374 spin_unlock_irq(&ide_lock);
375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 return 0;
377}
378
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200379static int set_ksettings(ide_drive_t *drive, int arg)
380{
381 if (arg < 0 || arg > 1)
382 return -EINVAL;
383
384 if (ide_spin_wait_hwgroup(drive))
385 return -EBUSY;
386 drive->keep_settings = arg;
387 spin_unlock_irq(&ide_lock);
388
389 return 0;
390}
391
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200392int set_using_dma(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393{
394#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200395 ide_hwif_t *hwif = drive->hwif;
396 int err = -EPERM;
397
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200398 if (arg < 0 || arg > 1)
399 return -EINVAL;
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 if (!drive->id || !(drive->id->capability & 1))
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200402 goto out;
403
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200404 if (hwif->dma_ops == NULL)
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200405 goto out;
406
407 err = -EBUSY;
408 if (ide_spin_wait_hwgroup(drive))
409 goto out;
410 /*
411 * set ->busy flag, unlock and let it ride
412 */
413 hwif->hwgroup->busy = 1;
414 spin_unlock_irq(&ide_lock);
415
416 err = 0;
417
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 if (arg) {
Bartlomiej Zolnierkiewicz23b1bd42008-01-25 22:17:19 +0100419 if (ide_set_dma(drive))
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200420 err = -EIO;
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +0100421 } else
422 ide_dma_off(drive);
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200423
424 /*
425 * lock, clear ->busy flag and unlock before leaving
426 */
427 spin_lock_irq(&ide_lock);
428 hwif->hwgroup->busy = 0;
429 spin_unlock_irq(&ide_lock);
430out:
431 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432#else
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200433 if (arg < 0 || arg > 1)
434 return -EINVAL;
435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 return -EPERM;
437#endif
438}
439
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200440int set_pio_mode(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441{
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200442 struct request *rq;
Bartlomiej Zolnierkiewicz784506c2008-04-26 17:36:43 +0200443 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200444 const struct ide_port_ops *port_ops = hwif->port_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200446 if (arg < 0 || arg > 255)
447 return -EINVAL;
448
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200449 if (port_ops == NULL || port_ops->set_pio_mode == NULL ||
Bartlomiej Zolnierkiewicz784506c2008-04-26 17:36:43 +0200450 (hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 return -ENOSYS;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 if (drive->special.b.set_tune)
454 return -EBUSY;
Bartlomiej Zolnierkiewicz145b75e2008-01-26 20:13:11 +0100455
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200456 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
457 rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
Bartlomiej Zolnierkiewicz145b75e2008-01-26 20:13:11 +0100458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 drive->tune_req = (u8) arg;
460 drive->special.b.set_tune = 1;
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200461
462 blk_execute_rq(drive->queue, NULL, rq, 0);
463 blk_put_request(rq);
464
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 return 0;
466}
467
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200468static int set_unmaskirq(ide_drive_t *drive, int arg)
469{
470 if (drive->no_unmask)
471 return -EPERM;
472
473 if (arg < 0 || arg > 1)
474 return -EINVAL;
475
476 if (ide_spin_wait_hwgroup(drive))
477 return -EBUSY;
478 drive->unmask = arg;
479 spin_unlock_irq(&ide_lock);
480
481 return 0;
482}
483
David Brownellb887d2e2006-08-14 23:11:05 -0700484static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485{
486 ide_drive_t *drive = dev->driver_data;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100487 ide_hwif_t *hwif = HWIF(drive);
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200488 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 struct request_pm_state rqpm;
490 ide_task_t args;
Shaohua Li5e321322007-10-11 23:53:58 +0200491 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100493 /* Call ACPI _GTM only once */
494 if (!(drive->dn % 2))
495 ide_acpi_get_timing(hwif);
496
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 memset(&rqpm, 0, sizeof(rqpm));
498 memset(&args, 0, sizeof(args));
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200499 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
500 rq->cmd_type = REQ_TYPE_PM_SUSPEND;
501 rq->special = &args;
502 rq->data = &rqpm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 rqpm.pm_step = ide_pm_state_start_suspend;
David Brownellb887d2e2006-08-14 23:11:05 -0700504 if (mesg.event == PM_EVENT_PRETHAW)
505 mesg.event = PM_EVENT_FREEZE;
506 rqpm.pm_state = mesg.event;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200508 ret = blk_execute_rq(drive->queue, NULL, rq, 0);
509 blk_put_request(rq);
Shaohua Li5e321322007-10-11 23:53:58 +0200510 /* only call ACPI _PS3 after both drivers are suspended */
511 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
512 && hwif->drives[1].present)
513 || !hwif->drives[0].present
514 || !hwif->drives[1].present))
515 ide_acpi_set_state(hwif, 0);
516 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517}
518
519static int generic_ide_resume(struct device *dev)
520{
521 ide_drive_t *drive = dev->driver_data;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100522 ide_hwif_t *hwif = HWIF(drive);
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200523 struct request *rq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 struct request_pm_state rqpm;
525 ide_task_t args;
Lee Trager0d2157f2007-06-08 15:14:30 +0200526 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100528 /* Call ACPI _STM only once */
Shaohua Li5e321322007-10-11 23:53:58 +0200529 if (!(drive->dn % 2)) {
530 ide_acpi_set_state(hwif, 1);
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100531 ide_acpi_push_timing(hwif);
Shaohua Li5e321322007-10-11 23:53:58 +0200532 }
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100533
534 ide_acpi_exec_tfs(drive);
535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 memset(&rqpm, 0, sizeof(rqpm));
537 memset(&args, 0, sizeof(args));
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200538 rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
539 rq->cmd_type = REQ_TYPE_PM_RESUME;
540 rq->cmd_flags |= REQ_PREEMPT;
541 rq->special = &args;
542 rq->data = &rqpm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 rqpm.pm_step = ide_pm_state_start_resume;
Pavel Machekca078ba2005-09-03 15:56:57 -0700544 rqpm.pm_state = PM_EVENT_ON;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545
FUJITA Tomonori5b114712008-07-15 21:21:44 +0200546 err = blk_execute_rq(drive->queue, NULL, rq, 1);
547 blk_put_request(rq);
Lee Trager0d2157f2007-06-08 15:14:30 +0200548
Rafael J. Wysockice9b2b02007-06-16 02:24:43 +0200549 if (err == 0 && dev->driver) {
550 ide_driver_t *drv = to_ide_driver(dev->driver);
551
552 if (drv->resume)
553 drv->resume(drive);
554 }
Lee Trager0d2157f2007-06-08 15:14:30 +0200555
556 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557}
558
559int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
560 unsigned int cmd, unsigned long arg)
561{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200562 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 ide_driver_t *drv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 void __user *p = (void __user *)arg;
Linus Torvalds19850262007-07-17 15:57:42 -0700565 int err = 0, (*setfunc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200566 u8 *val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200568 switch (cmd) {
569 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
570 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
571 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
572 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
573 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
574 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
575 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
576 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
577 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
580 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 case HDIO_OBSOLETE_IDENTITY:
582 case HDIO_GET_IDENTITY:
583 if (bdev != bdev->bd_contains)
584 return -EINVAL;
585 if (drive->id_read == 0)
586 return -ENOMSG;
587 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
588 return -EFAULT;
589 return 0;
590
591 case HDIO_GET_NICE:
592 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
593 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
Bartlomiej Zolnierkiewicz92b83c82008-02-02 19:56:45 +0100594 drive->nice1 << IDE_NICE_1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 (long __user *) arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596#ifdef CONFIG_IDE_TASK_IOCTL
597 case HDIO_DRIVE_TASKFILE:
598 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
599 return -EACCES;
600 switch(drive->media) {
601 case ide_disk:
602 return ide_taskfile_ioctl(drive, cmd, arg);
603 default:
604 return -ENOMSG;
605 }
606#endif /* CONFIG_IDE_TASK_IOCTL */
607
608 case HDIO_DRIVE_CMD:
609 if (!capable(CAP_SYS_RAWIO))
610 return -EACCES;
611 return ide_cmd_ioctl(drive, cmd, arg);
612
613 case HDIO_DRIVE_TASK:
614 if (!capable(CAP_SYS_RAWIO))
615 return -EACCES;
616 return ide_task_ioctl(drive, cmd, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 case HDIO_SET_NICE:
618 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
619 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
620 return -EPERM;
621 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
622 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
623 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
624 drive->dsc_overlap = 0;
625 return -EPERM;
626 }
627 drive->nice1 = (arg >> IDE_NICE_1) & 1;
628 return 0;
629 case HDIO_DRIVE_RESET:
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +0100630 if (!capable(CAP_SYS_ADMIN))
631 return -EACCES;
632
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 /*
634 * Abort the current command on the
635 * group if there is one, taking
636 * care not to allow anything else
637 * to be queued and to die on the
638 * spot if we miss one somehow
639 */
640
641 spin_lock_irqsave(&ide_lock, flags);
642
Alan Cox913759a2006-10-03 01:14:33 -0700643 if (HWGROUP(drive)->resetting) {
644 spin_unlock_irqrestore(&ide_lock, flags);
645 return -EBUSY;
646 }
647
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 ide_abort(drive, "drive reset");
649
Eric Sesterhenn125e1872006-06-23 02:06:06 -0700650 BUG_ON(HWGROUP(drive)->handler);
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +0100651
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 /* Ensure nothing gets queued after we
653 drop the lock. Reset will clear the busy */
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +0100654
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 HWGROUP(drive)->busy = 1;
656 spin_unlock_irqrestore(&ide_lock, flags);
657 (void) ide_do_reset(drive);
658
659 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 case HDIO_GET_BUSSTATE:
661 if (!capable(CAP_SYS_ADMIN))
662 return -EACCES;
663 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
664 return -EFAULT;
665 return 0;
666
667 case HDIO_SET_BUSSTATE:
668 if (!capable(CAP_SYS_ADMIN))
669 return -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 return -EOPNOTSUPP;
671 default:
672 return -EINVAL;
673 }
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200674
675read_val:
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200676 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200677 spin_lock_irqsave(&ide_lock, flags);
678 err = *val;
679 spin_unlock_irqrestore(&ide_lock, flags);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200680 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200681 return err >= 0 ? put_user(err, (long __user *)arg) : err;
682
683set_val:
684 if (bdev != bdev->bd_contains)
685 err = -EINVAL;
686 else {
687 if (!capable(CAP_SYS_ADMIN))
688 err = -EACCES;
689 else {
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200690 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200691 err = setfunc(drive, arg);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200692 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200693 }
694 }
695 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696}
697
698EXPORT_SYMBOL(generic_ide_ioctl);
699
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200700static int ide_bus_match(struct device *dev, struct device_driver *drv)
701{
702 return 1;
703}
704
Kay Sievers263756e2005-12-12 18:03:44 +0100705static char *media_string(ide_drive_t *drive)
706{
707 switch (drive->media) {
708 case ide_disk:
709 return "disk";
710 case ide_cdrom:
711 return "cdrom";
712 case ide_tape:
713 return "tape";
714 case ide_floppy:
715 return "floppy";
Danny Kukawkaa7a832d2007-04-10 22:39:14 +0200716 case ide_optical:
717 return "optical";
Kay Sievers263756e2005-12-12 18:03:44 +0100718 default:
719 return "UNKNOWN";
720 }
721}
722
723static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
724{
725 ide_drive_t *drive = to_ide_device(dev);
726 return sprintf(buf, "%s\n", media_string(drive));
727}
728
729static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
730{
731 ide_drive_t *drive = to_ide_device(dev);
732 return sprintf(buf, "%s\n", drive->name);
733}
734
735static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
736{
737 ide_drive_t *drive = to_ide_device(dev);
738 return sprintf(buf, "ide:m-%s\n", media_string(drive));
739}
740
Bartlomiej Zolnierkiewicze11b9032007-12-12 23:31:58 +0100741static ssize_t model_show(struct device *dev, struct device_attribute *attr,
742 char *buf)
743{
744 ide_drive_t *drive = to_ide_device(dev);
745 return sprintf(buf, "%s\n", drive->id->model);
746}
747
748static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
749 char *buf)
750{
751 ide_drive_t *drive = to_ide_device(dev);
752 return sprintf(buf, "%s\n", drive->id->fw_rev);
753}
754
755static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
756 char *buf)
757{
758 ide_drive_t *drive = to_ide_device(dev);
759 return sprintf(buf, "%s\n", drive->id->serial_no);
760}
761
Kay Sievers263756e2005-12-12 18:03:44 +0100762static struct device_attribute ide_dev_attrs[] = {
763 __ATTR_RO(media),
764 __ATTR_RO(drivename),
765 __ATTR_RO(modalias),
Bartlomiej Zolnierkiewicze11b9032007-12-12 23:31:58 +0100766 __ATTR_RO(model),
767 __ATTR_RO(firmware),
768 __ATTR(serial, 0400, serial_show, NULL),
Kay Sievers263756e2005-12-12 18:03:44 +0100769 __ATTR_NULL
770};
771
Kay Sievers7eff2e72007-08-14 15:15:12 +0200772static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
Kay Sievers263756e2005-12-12 18:03:44 +0100773{
774 ide_drive_t *drive = to_ide_device(dev);
Kay Sievers263756e2005-12-12 18:03:44 +0100775
Kay Sievers7eff2e72007-08-14 15:15:12 +0200776 add_uevent_var(env, "MEDIA=%s", media_string(drive));
777 add_uevent_var(env, "DRIVENAME=%s", drive->name);
778 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
Kay Sievers263756e2005-12-12 18:03:44 +0100779 return 0;
780}
781
Russell King4031bbe2006-01-06 11:41:00 +0000782static int generic_ide_probe(struct device *dev)
783{
784 ide_drive_t *drive = to_ide_device(dev);
785 ide_driver_t *drv = to_ide_driver(dev->driver);
786
787 return drv->probe ? drv->probe(drive) : -ENODEV;
788}
789
790static int generic_ide_remove(struct device *dev)
791{
792 ide_drive_t *drive = to_ide_device(dev);
793 ide_driver_t *drv = to_ide_driver(dev->driver);
794
795 if (drv->remove)
796 drv->remove(drive);
797
798 return 0;
799}
800
801static void generic_ide_shutdown(struct device *dev)
802{
803 ide_drive_t *drive = to_ide_device(dev);
804 ide_driver_t *drv = to_ide_driver(dev->driver);
805
806 if (dev->driver && drv->shutdown)
807 drv->shutdown(drive);
808}
809
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810struct bus_type ide_bus_type = {
811 .name = "ide",
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200812 .match = ide_bus_match,
Kay Sievers263756e2005-12-12 18:03:44 +0100813 .uevent = ide_uevent,
Russell King4031bbe2006-01-06 11:41:00 +0000814 .probe = generic_ide_probe,
815 .remove = generic_ide_remove,
816 .shutdown = generic_ide_shutdown,
Kay Sievers263756e2005-12-12 18:03:44 +0100817 .dev_attrs = ide_dev_attrs,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 .suspend = generic_ide_suspend,
819 .resume = generic_ide_resume,
820};
821
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200822EXPORT_SYMBOL_GPL(ide_bus_type);
823
Bartlomiej Zolnierkiewiczebae41a2008-04-27 15:38:29 +0200824int ide_vlb_clk;
825EXPORT_SYMBOL_GPL(ide_vlb_clk);
826
827module_param_named(vlb_clock, ide_vlb_clk, int, 0);
828MODULE_PARM_DESC(vlb_clock, "VLB clock frequency (in MHz)");
829
830int ide_pci_clk;
831EXPORT_SYMBOL_GPL(ide_pci_clk);
832
833module_param_named(pci_clock, ide_pci_clk, int, 0);
834MODULE_PARM_DESC(pci_clock, "PCI bus clock frequency (in MHz)");
835
Bartlomiej Zolnierkiewicz6e875432008-04-27 15:38:30 +0200836static int ide_set_dev_param_mask(const char *s, struct kernel_param *kp)
837{
838 int a, b, i, j = 1;
839 unsigned int *dev_param_mask = (unsigned int *)kp->arg;
840
841 if (sscanf(s, "%d.%d:%d", &a, &b, &j) != 3 &&
842 sscanf(s, "%d.%d", &a, &b) != 2)
843 return -EINVAL;
844
845 i = a * MAX_DRIVES + b;
846
847 if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1)
848 return -EINVAL;
849
850 if (j)
851 *dev_param_mask |= (1 << i);
852 else
853 *dev_param_mask &= (1 << i);
854
855 return 0;
856}
857
858static unsigned int ide_nodma;
859
860module_param_call(nodma, ide_set_dev_param_mask, NULL, &ide_nodma, 0);
861MODULE_PARM_DESC(nodma, "disallow DMA for a device");
862
863static unsigned int ide_noflush;
864
865module_param_call(noflush, ide_set_dev_param_mask, NULL, &ide_noflush, 0);
866MODULE_PARM_DESC(noflush, "disable flush requests for a device");
867
868static unsigned int ide_noprobe;
869
870module_param_call(noprobe, ide_set_dev_param_mask, NULL, &ide_noprobe, 0);
871MODULE_PARM_DESC(noprobe, "skip probing for a device");
872
873static unsigned int ide_nowerr;
874
875module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0);
876MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device");
877
Bartlomiej Zolnierkiewicz4706a7e2008-04-27 15:38:30 +0200878static unsigned int ide_cdroms;
879
880module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0);
881MODULE_PARM_DESC(cdrom, "force device as a CD-ROM");
882
883struct chs_geom {
884 unsigned int cyl;
885 u8 head;
886 u8 sect;
887};
888
889static unsigned int ide_disks;
890static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES];
891
892static int ide_set_disk_chs(const char *str, struct kernel_param *kp)
893{
894 int a, b, c = 0, h = 0, s = 0, i, j = 1;
895
896 if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 &&
897 sscanf(str, "%d.%d:%d", &a, &b, &j) != 3)
898 return -EINVAL;
899
900 i = a * MAX_DRIVES + b;
901
902 if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1)
903 return -EINVAL;
904
905 if (c > INT_MAX || h > 255 || s > 255)
906 return -EINVAL;
907
908 if (j)
909 ide_disks |= (1 << i);
910 else
911 ide_disks &= (1 << i);
912
913 ide_disks_chs[i].cyl = c;
914 ide_disks_chs[i].head = h;
915 ide_disks_chs[i].sect = s;
916
917 return 0;
918}
919
920module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0);
921MODULE_PARM_DESC(chs, "force device as a disk (using CHS)");
922
Bartlomiej Zolnierkiewicz6e875432008-04-27 15:38:30 +0200923static void ide_dev_apply_params(ide_drive_t *drive)
924{
925 int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit;
926
927 if (ide_nodma & (1 << i)) {
928 printk(KERN_INFO "ide: disallowing DMA for %s\n", drive->name);
929 drive->nodma = 1;
930 }
931 if (ide_noflush & (1 << i)) {
932 printk(KERN_INFO "ide: disabling flush requests for %s\n",
933 drive->name);
934 drive->noflush = 1;
935 }
936 if (ide_noprobe & (1 << i)) {
937 printk(KERN_INFO "ide: skipping probe for %s\n", drive->name);
938 drive->noprobe = 1;
939 }
940 if (ide_nowerr & (1 << i)) {
941 printk(KERN_INFO "ide: ignoring the WRERR_STAT bit for %s\n",
942 drive->name);
943 drive->bad_wstat = BAD_R_STAT;
944 }
Bartlomiej Zolnierkiewicz4706a7e2008-04-27 15:38:30 +0200945 if (ide_cdroms & (1 << i)) {
946 printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name);
947 drive->present = 1;
948 drive->media = ide_cdrom;
949 /* an ATAPI device ignores DRDY */
950 drive->ready_stat = 0;
951 }
952 if (ide_disks & (1 << i)) {
953 drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl;
954 drive->head = drive->bios_head = ide_disks_chs[i].head;
955 drive->sect = drive->bios_sect = ide_disks_chs[i].sect;
956 drive->forced_geom = 1;
957 printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n",
958 drive->name,
959 drive->cyl, drive->head, drive->sect);
960 drive->present = 1;
961 drive->media = ide_disk;
962 drive->ready_stat = READY_STAT;
963 }
Bartlomiej Zolnierkiewicz6e875432008-04-27 15:38:30 +0200964}
965
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +0200966static unsigned int ide_ignore_cable;
967
968static int ide_set_ignore_cable(const char *s, struct kernel_param *kp)
969{
970 int i, j = 1;
971
972 if (sscanf(s, "%d:%d", &i, &j) != 2 && sscanf(s, "%d", &i) != 1)
973 return -EINVAL;
974
975 if (i >= MAX_HWIFS || j < 0 || j > 1)
976 return -EINVAL;
977
978 if (j)
979 ide_ignore_cable |= (1 << i);
980 else
981 ide_ignore_cable &= (1 << i);
982
983 return 0;
984}
985
986module_param_call(ignore_cable, ide_set_ignore_cable, NULL, NULL, 0);
987MODULE_PARM_DESC(ignore_cable, "ignore cable detection");
988
989void ide_port_apply_params(ide_hwif_t *hwif)
990{
Bartlomiej Zolnierkiewicz6e875432008-04-27 15:38:30 +0200991 int i;
992
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +0200993 if (ide_ignore_cable & (1 << hwif->index)) {
994 printk(KERN_INFO "ide: ignoring cable detection for %s\n",
995 hwif->name);
996 hwif->cbl = ATA_CBL_PATA40_SHORT;
997 }
Bartlomiej Zolnierkiewicz6e875432008-04-27 15:38:30 +0200998
999 for (i = 0; i < MAX_DRIVES; i++)
1000 ide_dev_apply_params(&hwif->drives[i]);
Bartlomiej Zolnierkiewicz9fd91d92008-04-27 15:38:23 +02001001}
1002
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003/*
1004 * This is gets invoked once during initialization, to set *everything* up
1005 */
1006static int __init ide_init(void)
1007{
Randy Dunlap349ae232006-10-03 01:14:23 -07001008 int ret;
1009
Bartlomiej Zolnierkiewiczeba8ff92008-02-11 00:32:13 +01001010 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n");
Bartlomiej Zolnierkiewicz537f06c2008-02-01 23:09:35 +01001011
Randy Dunlap349ae232006-10-03 01:14:23 -07001012 ret = bus_register(&ide_bus_type);
1013 if (ret < 0) {
1014 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1015 return ret;
1016 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001018 ide_port_class = class_create(THIS_MODULE, "ide_port");
1019 if (IS_ERR(ide_port_class)) {
1020 ret = PTR_ERR(ide_port_class);
1021 goto out_port_class;
1022 }
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001023
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024 init_ide_data();
1025
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001026 proc_ide_create();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 return 0;
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001029
1030out_port_class:
1031 bus_unregister(&ide_bus_type);
1032
1033 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034}
1035
Bartlomiej Zolnierkiewicz931ee0d2008-07-15 21:21:47 +02001036static void __exit ide_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 proc_ide_destroy();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039
Bartlomiej Zolnierkiewiczf74c9142008-04-18 00:46:23 +02001040 class_destroy(ide_port_class);
1041
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 bus_unregister(&ide_bus_type);
1043}
1044
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045module_init(ide_init);
Bartlomiej Zolnierkiewicz931ee0d2008-07-15 21:21:47 +02001046module_exit(ide_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047
Bartlomiej Zolnierkiewicz931ee0d2008-07-15 21:21:47 +02001048MODULE_LICENSE("GPL");