Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
3 | * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
4 | */ |
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 | * | |
1da177e4 LT |
18 | * ... |
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 | |
1da177e4 LT |
45 | */ |
46 | ||
1da177e4 LT |
47 | #define _IDE_C /* Tell ide.h it's really us */ |
48 | ||
1da177e4 LT |
49 | #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> | |
1da177e4 LT |
65 | #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 | ||
f74c9141 BZ |
81 | struct class *ide_port_class; |
82 | ||
1da177e4 LT |
83 | static 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 | ||
89 | static int idebus_parameter; /* holds the "idebus=" parameter */ | |
90 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ | |
1da177e4 | 91 | |
ef29888e | 92 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 LT |
93 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
94 | ||
1da177e4 | 95 | int noautodma = 0; |
1da177e4 | 96 | |
e3a59b4d HR |
97 | #ifdef CONFIG_BLK_DEV_IDEACPI |
98 | int ide_noacpi = 0; | |
99 | int ide_noacpitfs = 1; | |
100 | int ide_noacpionboot = 1; | |
101 | #endif | |
102 | ||
1da177e4 | 103 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
1da177e4 | 104 | |
43514ed1 BZ |
105 | static void ide_port_init_devices_data(ide_hwif_t *); |
106 | ||
1da177e4 LT |
107 | /* |
108 | * Do not even *think* about calling this! | |
109 | */ | |
cbb010c1 | 110 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 111 | { |
1da177e4 LT |
112 | /* bulk initialize hwif & drive info with zeros */ |
113 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
114 | ||
115 | /* fill in any non-zero initial values */ | |
116 | hwif->index = index; | |
117 | hwif->major = ide_hwif_to_major[index]; | |
118 | ||
119 | hwif->name[0] = 'i'; | |
120 | hwif->name[1] = 'd'; | |
121 | hwif->name[2] = 'e'; | |
122 | hwif->name[3] = '0' + index; | |
123 | ||
124 | hwif->bus_state = BUSSTATE_ON; | |
125 | ||
f36d4024 | 126 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
127 | |
128 | default_hwif_iops(hwif); | |
129 | default_hwif_transport(hwif); | |
43514ed1 BZ |
130 | |
131 | ide_port_init_devices_data(hwif); | |
132 | } | |
133 | EXPORT_SYMBOL_GPL(ide_init_port_data); | |
134 | ||
135 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
136 | { | |
137 | int unit; | |
138 | ||
1da177e4 LT |
139 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
140 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
141 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
142 | ||
143 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
144 | |
145 | drive->media = ide_disk; | |
146 | drive->select.all = (unit<<4)|0xa0; | |
147 | drive->hwif = hwif; | |
148 | drive->ctl = 0x08; | |
149 | drive->ready_stat = READY_STAT; | |
150 | drive->bad_wstat = BAD_W_STAT; | |
151 | drive->special.b.recalibrate = 1; | |
152 | drive->special.b.set_geometry = 1; | |
153 | drive->name[0] = 'h'; | |
154 | drive->name[1] = 'd'; | |
43514ed1 | 155 | drive->name[2] = 'a' + j; |
1da177e4 | 156 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 157 | |
1da177e4 | 158 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 159 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
160 | } |
161 | } | |
43514ed1 | 162 | |
1da177e4 LT |
163 | /* |
164 | * init_ide_data() sets reasonable default values into all fields | |
165 | * of all instances of the hwifs and drives, but only on the first call. | |
166 | * Subsequent calls have no effect (they don't wipe out anything). | |
167 | * | |
168 | * This routine is normally called at driver initialization time, | |
169 | * but may also be called MUCH earlier during kernel "command-line" | |
170 | * parameter processing. As such, we cannot depend on any other parts | |
171 | * of the kernel (such as memory allocation) to be functioning yet. | |
172 | * | |
173 | * This is too bad, as otherwise we could dynamically allocate the | |
174 | * ide_drive_t structs as needed, rather than always consuming memory | |
175 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
176 | * | |
177 | * FIXME: We should stuff the setup data into __init and copy the | |
178 | * relevant hwifs/allocate them properly during boot. | |
179 | */ | |
180 | #define MAGIC_COOKIE 0x12345678 | |
181 | static void __init init_ide_data (void) | |
182 | { | |
1da177e4 LT |
183 | unsigned int index; |
184 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
185 | ||
186 | if (magic_cookie != MAGIC_COOKIE) | |
187 | return; /* already initialized */ | |
188 | magic_cookie = 0; | |
189 | ||
190 | /* Initialise all interface structures */ | |
191 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 BZ |
192 | ide_hwif_t *hwif = &ide_hwifs[index]; |
193 | ||
cbb010c1 | 194 | ide_init_port_data(hwif, index); |
1da177e4 | 195 | } |
1da177e4 LT |
196 | } |
197 | ||
198 | /** | |
199 | * ide_system_bus_speed - guess bus speed | |
200 | * | |
201 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
202 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
203 | * The default is 40 for known PCI systems, 50 otherwise. | |
204 | * The "idebus=xx" parameter can be used to override this value. | |
205 | * The actual value to be used is computed/displayed the first time | |
206 | * through. Drivers should only use this as a last resort. | |
207 | * | |
208 | * Returns a guessed speed in MHz. | |
209 | */ | |
210 | ||
211 | static int ide_system_bus_speed(void) | |
212 | { | |
213 | #ifdef CONFIG_PCI | |
214 | static struct pci_device_id pci_default[] = { | |
215 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
216 | { } | |
217 | }; | |
218 | #else | |
219 | #define pci_default 0 | |
220 | #endif /* CONFIG_PCI */ | |
221 | ||
537f06c5 BZ |
222 | /* user supplied value */ |
223 | if (idebus_parameter) | |
224 | return idebus_parameter; | |
225 | ||
226 | /* safe default value for PCI or VESA and PCI*/ | |
227 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
228 | } |
229 | ||
1da177e4 LT |
230 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
231 | unsigned long addr, int num) | |
232 | { | |
233 | struct resource *res = request_region(addr, num, hwif->name); | |
234 | ||
235 | if (!res) | |
236 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
237 | hwif->name, addr, addr+num-1); | |
238 | return res; | |
239 | } | |
240 | ||
241 | /** | |
242 | * ide_hwif_request_regions - request resources for IDE | |
243 | * @hwif: interface to use | |
244 | * | |
245 | * Requests all the needed resources for an interface. | |
246 | * Right now core IDE code does this work which is deeply wrong. | |
247 | * MMIO leaves it to the controller driver, | |
248 | * PIO will migrate this way over time. | |
249 | */ | |
250 | ||
251 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
252 | { | |
253 | unsigned long addr; | |
1da177e4 | 254 | |
2ad1e558 | 255 | if (hwif->mmio) |
1da177e4 | 256 | return 0; |
05230e23 | 257 | |
1da177e4 | 258 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
05230e23 | 259 | |
1da177e4 LT |
260 | if (addr && !hwif_request_region(hwif, addr, 1)) |
261 | goto control_region_busy; | |
05230e23 | 262 | |
1da177e4 | 263 | addr = hwif->io_ports[IDE_DATA_OFFSET]; |
05230e23 BZ |
264 | BUG_ON((addr | 7) != hwif->io_ports[IDE_STATUS_OFFSET]); |
265 | ||
266 | if (!hwif_request_region(hwif, addr, 8)) | |
267 | goto data_region_busy; | |
268 | ||
1da177e4 LT |
269 | return 0; |
270 | ||
271 | data_region_busy: | |
272 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
273 | if (addr) | |
274 | release_region(addr, 1); | |
275 | control_region_busy: | |
276 | /* If any errors are return, we drop the hwif interface. */ | |
277 | return -EBUSY; | |
278 | } | |
279 | ||
280 | /** | |
281 | * ide_hwif_release_regions - free IDE resources | |
282 | * | |
283 | * Note that we only release the standard ports, | |
284 | * and do not even try to handle any extra ports | |
285 | * allocated for weird IDE interface chipsets. | |
286 | * | |
287 | * Note also that we don't yet handle mmio resources here. More | |
288 | * importantly our caller should be doing this so we need to | |
289 | * restructure this as a helper function for drivers. | |
290 | */ | |
291 | ||
292 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
293 | { | |
2ad1e558 | 294 | if (hwif->mmio) |
1da177e4 | 295 | return; |
05230e23 | 296 | |
1da177e4 LT |
297 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) |
298 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
05230e23 BZ |
299 | |
300 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
1da177e4 LT |
301 | } |
302 | ||
fbd13088 | 303 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
304 | { |
305 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
306 | ||
307 | spin_lock_irq(&ide_lock); | |
308 | /* | |
309 | * Remove us from the hwgroup, and free | |
310 | * the hwgroup if we were the only member | |
311 | */ | |
312 | if (hwif->next == hwif) { | |
313 | BUG_ON(hwgroup->hwif != hwif); | |
314 | kfree(hwgroup); | |
315 | } else { | |
316 | /* There is another interface in hwgroup. | |
317 | * Unlink us, and set hwgroup->drive and ->hwif to | |
318 | * something sane. | |
319 | */ | |
320 | ide_hwif_t *g = hwgroup->hwif; | |
321 | ||
322 | while (g->next != hwif) | |
323 | g = g->next; | |
324 | g->next = hwif->next; | |
325 | if (hwgroup->hwif == hwif) { | |
326 | /* Chose a random hwif for hwgroup->hwif. | |
327 | * It's guaranteed that there are no drives | |
328 | * left in the hwgroup. | |
329 | */ | |
330 | BUG_ON(hwgroup->drive != NULL); | |
331 | hwgroup->hwif = g; | |
332 | } | |
333 | BUG_ON(hwgroup->hwif == hwif); | |
334 | } | |
335 | spin_unlock_irq(&ide_lock); | |
336 | } | |
337 | ||
71bf9f6f | 338 | /* Called with ide_lock held. */ |
2dde7861 | 339 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
340 | { |
341 | int i; | |
342 | ||
343 | for (i = 0; i < MAX_DRIVES; i++) { | |
344 | ide_drive_t *drive = &hwif->drives[i]; | |
345 | ||
346 | if (drive->present) { | |
347 | spin_unlock_irq(&ide_lock); | |
348 | device_unregister(&drive->gendev); | |
349 | wait_for_completion(&drive->gendev_rel_comp); | |
350 | spin_lock_irq(&ide_lock); | |
351 | } | |
352 | } | |
353 | } | |
354 | ||
2dde7861 BZ |
355 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
356 | { | |
357 | mutex_lock(&ide_cfg_mtx); | |
358 | spin_lock_irq(&ide_lock); | |
359 | __ide_port_unregister_devices(hwif); | |
360 | hwif->present = 0; | |
361 | ide_port_init_devices_data(hwif); | |
362 | spin_unlock_irq(&ide_lock); | |
363 | mutex_unlock(&ide_cfg_mtx); | |
364 | } | |
365 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
366 | ||
1da177e4 | 367 | /** |
020e322d | 368 | * ide_unregister - free an IDE interface |
1da177e4 LT |
369 | * @index: index of interface (will change soon to a pointer) |
370 | * | |
371 | * Perform the final unregister of an IDE interface. At the moment | |
372 | * we don't refcount interfaces so this will also get split up. | |
373 | * | |
374 | * Locking: | |
375 | * The caller must not hold the IDE locks | |
376 | * The drive present/vanishing is not yet properly locked | |
377 | * Take care with the callbacks. These have been split to avoid | |
378 | * deadlocking the IDE layer. The shutdown callback is called | |
379 | * before we take the lock and free resources. It is up to the | |
380 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
381 | * the interface will not be reopened (present/vanishing locking |
382 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
383 | * call the cleanup callback with the ide locks held. |
384 | * | |
385 | * Unregister restores the hwif structures to the default state. | |
386 | * This is raving bonkers. | |
387 | */ | |
388 | ||
93de00fd | 389 | void ide_unregister(unsigned int index) |
1da177e4 | 390 | { |
1da177e4 | 391 | ide_hwif_t *hwif, *g; |
1da177e4 | 392 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 393 | int irq_count = 0; |
1da177e4 LT |
394 | |
395 | BUG_ON(index >= MAX_HWIFS); | |
396 | ||
397 | BUG_ON(in_interrupt()); | |
398 | BUG_ON(irqs_disabled()); | |
ef29888e | 399 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
400 | spin_lock_irq(&ide_lock); |
401 | hwif = &ide_hwifs[index]; | |
402 | if (!hwif->present) | |
403 | goto abort; | |
2dde7861 | 404 | __ide_port_unregister_devices(hwif); |
1da177e4 LT |
405 | hwif->present = 0; |
406 | ||
407 | spin_unlock_irq(&ide_lock); | |
408 | ||
5cbf79cd | 409 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
410 | |
411 | hwgroup = hwif->hwgroup; | |
412 | /* | |
413 | * free the irq if we were the only hwif using it | |
414 | */ | |
415 | g = hwgroup->hwif; | |
416 | do { | |
417 | if (g->irq == hwif->irq) | |
418 | ++irq_count; | |
419 | g = g->next; | |
420 | } while (g != hwgroup->hwif); | |
421 | if (irq_count == 1) | |
422 | free_irq(hwif->irq, hwgroup); | |
423 | ||
96e5ad30 | 424 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 425 | |
f74c9141 | 426 | device_unregister(hwif->portdev); |
1da177e4 | 427 | device_unregister(&hwif->gendev); |
f36d4024 | 428 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
429 | |
430 | /* | |
431 | * Remove us from the kernel's knowledge | |
432 | */ | |
433 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
434 | kfree(hwif->sg_table); | |
435 | unregister_blkdev(hwif->major, hwif->name); | |
436 | spin_lock_irq(&ide_lock); | |
437 | ||
93de00fd BZ |
438 | if (hwif->dma_base) |
439 | (void)ide_release_dma(hwif); | |
1da177e4 | 440 | |
7cba97f1 BZ |
441 | ide_hwif_release_regions(hwif); |
442 | ||
1da177e4 | 443 | /* restore hwif data to pristine status */ |
cbb010c1 | 444 | ide_init_port_data(hwif, index); |
1da177e4 | 445 | |
1da177e4 LT |
446 | abort: |
447 | spin_unlock_irq(&ide_lock); | |
ef29888e | 448 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
449 | } |
450 | ||
451 | EXPORT_SYMBOL(ide_unregister); | |
452 | ||
57c802e8 BZ |
453 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
454 | { | |
455 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
456 | hwif->irq = hw->irq; | |
57c802e8 BZ |
457 | hwif->chipset = hw->chipset; |
458 | hwif->gendev.parent = hw->dev; | |
459 | hwif->ack_intr = hw->ack_intr; | |
460 | } | |
461 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
462 | ||
1da177e4 LT |
463 | /* |
464 | * Locks for IDE setting functionality | |
465 | */ | |
466 | ||
f9383c42 | 467 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 468 | |
f9383c42 | 469 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 470 | |
1da177e4 LT |
471 | /** |
472 | * ide_spin_wait_hwgroup - wait for group | |
473 | * @drive: drive in the group | |
474 | * | |
475 | * Wait for an IDE device group to go non busy and then return | |
476 | * holding the ide_lock which guards the hwgroup->busy status | |
477 | * and right to use it. | |
478 | */ | |
479 | ||
480 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
481 | { | |
482 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
483 | unsigned long timeout = jiffies + (3 * HZ); | |
484 | ||
485 | spin_lock_irq(&ide_lock); | |
486 | ||
487 | while (hwgroup->busy) { | |
488 | unsigned long lflags; | |
489 | spin_unlock_irq(&ide_lock); | |
490 | local_irq_set(lflags); | |
491 | if (time_after(jiffies, timeout)) { | |
492 | local_irq_restore(lflags); | |
493 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
494 | return -EBUSY; | |
495 | } | |
496 | local_irq_restore(lflags); | |
497 | spin_lock_irq(&ide_lock); | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | ||
502 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
503 | ||
7662d046 | 504 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 505 | { |
1497943e BZ |
506 | if (drive->no_io_32bit) |
507 | return -EPERM; | |
508 | ||
509 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
510 | return -EINVAL; | |
511 | ||
644a9d76 BZ |
512 | if (ide_spin_wait_hwgroup(drive)) |
513 | return -EBUSY; | |
514 | ||
1da177e4 | 515 | drive->io_32bit = arg; |
644a9d76 BZ |
516 | |
517 | spin_unlock_irq(&ide_lock); | |
518 | ||
1da177e4 LT |
519 | return 0; |
520 | } | |
521 | ||
1497943e BZ |
522 | static int set_ksettings(ide_drive_t *drive, int arg) |
523 | { | |
524 | if (arg < 0 || arg > 1) | |
525 | return -EINVAL; | |
526 | ||
527 | if (ide_spin_wait_hwgroup(drive)) | |
528 | return -EBUSY; | |
529 | drive->keep_settings = arg; | |
530 | spin_unlock_irq(&ide_lock); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
7662d046 | 535 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
536 | { |
537 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
538 | ide_hwif_t *hwif = drive->hwif; |
539 | int err = -EPERM; | |
540 | ||
1497943e BZ |
541 | if (arg < 0 || arg > 1) |
542 | return -EINVAL; | |
543 | ||
1da177e4 | 544 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
545 | goto out; |
546 | ||
15ce926a | 547 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
548 | goto out; |
549 | ||
550 | err = -EBUSY; | |
551 | if (ide_spin_wait_hwgroup(drive)) | |
552 | goto out; | |
553 | /* | |
554 | * set ->busy flag, unlock and let it ride | |
555 | */ | |
556 | hwif->hwgroup->busy = 1; | |
557 | spin_unlock_irq(&ide_lock); | |
558 | ||
559 | err = 0; | |
560 | ||
1da177e4 | 561 | if (arg) { |
23b1bd45 | 562 | if (ide_set_dma(drive)) |
87996204 | 563 | err = -EIO; |
7469aaf6 BZ |
564 | } else |
565 | ide_dma_off(drive); | |
87996204 BZ |
566 | |
567 | /* | |
568 | * lock, clear ->busy flag and unlock before leaving | |
569 | */ | |
570 | spin_lock_irq(&ide_lock); | |
571 | hwif->hwgroup->busy = 0; | |
572 | spin_unlock_irq(&ide_lock); | |
573 | out: | |
574 | return err; | |
1da177e4 | 575 | #else |
1497943e BZ |
576 | if (arg < 0 || arg > 1) |
577 | return -EINVAL; | |
578 | ||
1da177e4 LT |
579 | return -EPERM; |
580 | #endif | |
581 | } | |
582 | ||
7662d046 | 583 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
584 | { |
585 | struct request rq; | |
784506cb | 586 | ide_hwif_t *hwif = drive->hwif; |
ac95beed | 587 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1da177e4 | 588 | |
1497943e BZ |
589 | if (arg < 0 || arg > 255) |
590 | return -EINVAL; | |
591 | ||
ac95beed | 592 | if (port_ops == NULL || port_ops->set_pio_mode == NULL || |
784506cb | 593 | (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)) |
1da177e4 | 594 | return -ENOSYS; |
26bcb879 | 595 | |
1da177e4 LT |
596 | if (drive->special.b.set_tune) |
597 | return -EBUSY; | |
145b75e9 | 598 | |
1da177e4 | 599 | ide_init_drive_cmd(&rq); |
852738f3 | 600 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 601 | |
1da177e4 LT |
602 | drive->tune_req = (u8) arg; |
603 | drive->special.b.set_tune = 1; | |
604 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
605 | return 0; | |
606 | } | |
607 | ||
1497943e BZ |
608 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
609 | { | |
610 | if (drive->no_unmask) | |
611 | return -EPERM; | |
612 | ||
613 | if (arg < 0 || arg > 1) | |
614 | return -EINVAL; | |
615 | ||
616 | if (ide_spin_wait_hwgroup(drive)) | |
617 | return -EBUSY; | |
618 | drive->unmask = arg; | |
619 | spin_unlock_irq(&ide_lock); | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
1da177e4 LT |
624 | /** |
625 | * system_bus_clock - clock guess | |
626 | * | |
627 | * External version of the bus clock guess used by very old IDE drivers | |
628 | * for things like VLB timings. Should not be used. | |
629 | */ | |
630 | ||
631 | int system_bus_clock (void) | |
632 | { | |
537f06c5 | 633 | return system_bus_speed; |
1da177e4 LT |
634 | } |
635 | ||
636 | EXPORT_SYMBOL(system_bus_clock); | |
637 | ||
b887d2e6 | 638 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
639 | { |
640 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 641 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
642 | struct request rq; |
643 | struct request_pm_state rqpm; | |
644 | ide_task_t args; | |
5e32132b | 645 | int ret; |
1da177e4 | 646 | |
e3a59b4d HR |
647 | /* Call ACPI _GTM only once */ |
648 | if (!(drive->dn % 2)) | |
649 | ide_acpi_get_timing(hwif); | |
650 | ||
1da177e4 LT |
651 | memset(&rq, 0, sizeof(rq)); |
652 | memset(&rqpm, 0, sizeof(rqpm)); | |
653 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 654 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 655 | rq.special = &args; |
c00895ab | 656 | rq.data = &rqpm; |
1da177e4 | 657 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
658 | if (mesg.event == PM_EVENT_PRETHAW) |
659 | mesg.event = PM_EVENT_FREEZE; | |
660 | rqpm.pm_state = mesg.event; | |
1da177e4 | 661 | |
5e32132b SL |
662 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
663 | /* only call ACPI _PS3 after both drivers are suspended */ | |
664 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
665 | && hwif->drives[1].present) | |
666 | || !hwif->drives[0].present | |
667 | || !hwif->drives[1].present)) | |
668 | ide_acpi_set_state(hwif, 0); | |
669 | return ret; | |
1da177e4 LT |
670 | } |
671 | ||
672 | static int generic_ide_resume(struct device *dev) | |
673 | { | |
674 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 675 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
676 | struct request rq; |
677 | struct request_pm_state rqpm; | |
678 | ide_task_t args; | |
0d2157f7 | 679 | int err; |
1da177e4 | 680 | |
e3a59b4d | 681 | /* Call ACPI _STM only once */ |
5e32132b SL |
682 | if (!(drive->dn % 2)) { |
683 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 684 | ide_acpi_push_timing(hwif); |
5e32132b | 685 | } |
e3a59b4d HR |
686 | |
687 | ide_acpi_exec_tfs(drive); | |
688 | ||
1da177e4 LT |
689 | memset(&rq, 0, sizeof(rq)); |
690 | memset(&rqpm, 0, sizeof(rqpm)); | |
691 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 692 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 693 | rq.special = &args; |
c00895ab | 694 | rq.data = &rqpm; |
1da177e4 | 695 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 696 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 697 | |
0d2157f7 LT |
698 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
699 | ||
ce9b2b0a RW |
700 | if (err == 0 && dev->driver) { |
701 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
702 | ||
703 | if (drv->resume) | |
704 | drv->resume(drive); | |
705 | } | |
0d2157f7 LT |
706 | |
707 | return err; | |
1da177e4 LT |
708 | } |
709 | ||
710 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
711 | unsigned int cmd, unsigned long arg) | |
712 | { | |
1497943e | 713 | unsigned long flags; |
1da177e4 | 714 | ide_driver_t *drv; |
1da177e4 | 715 | void __user *p = (void __user *)arg; |
1985026d | 716 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 717 | u8 *val; |
1da177e4 | 718 | |
1497943e BZ |
719 | switch (cmd) { |
720 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
721 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
722 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
723 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
724 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
725 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
726 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
727 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
728 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 729 | } |
1da177e4 LT |
730 | |
731 | switch (cmd) { | |
1da177e4 LT |
732 | case HDIO_OBSOLETE_IDENTITY: |
733 | case HDIO_GET_IDENTITY: | |
734 | if (bdev != bdev->bd_contains) | |
735 | return -EINVAL; | |
736 | if (drive->id_read == 0) | |
737 | return -ENOMSG; | |
738 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
739 | return -EFAULT; | |
740 | return 0; | |
741 | ||
742 | case HDIO_GET_NICE: | |
743 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
744 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 745 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 746 | (long __user *) arg); |
1da177e4 LT |
747 | #ifdef CONFIG_IDE_TASK_IOCTL |
748 | case HDIO_DRIVE_TASKFILE: | |
749 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
750 | return -EACCES; | |
751 | switch(drive->media) { | |
752 | case ide_disk: | |
753 | return ide_taskfile_ioctl(drive, cmd, arg); | |
754 | default: | |
755 | return -ENOMSG; | |
756 | } | |
757 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
758 | ||
759 | case HDIO_DRIVE_CMD: | |
760 | if (!capable(CAP_SYS_RAWIO)) | |
761 | return -EACCES; | |
762 | return ide_cmd_ioctl(drive, cmd, arg); | |
763 | ||
764 | case HDIO_DRIVE_TASK: | |
765 | if (!capable(CAP_SYS_RAWIO)) | |
766 | return -EACCES; | |
767 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
768 | case HDIO_SET_NICE: |
769 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
770 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
771 | return -EPERM; | |
772 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
773 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
774 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
775 | drive->dsc_overlap = 0; | |
776 | return -EPERM; | |
777 | } | |
778 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
779 | return 0; | |
780 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
781 | if (!capable(CAP_SYS_ADMIN)) |
782 | return -EACCES; | |
783 | ||
1da177e4 LT |
784 | /* |
785 | * Abort the current command on the | |
786 | * group if there is one, taking | |
787 | * care not to allow anything else | |
788 | * to be queued and to die on the | |
789 | * spot if we miss one somehow | |
790 | */ | |
791 | ||
792 | spin_lock_irqsave(&ide_lock, flags); | |
793 | ||
913759ac AC |
794 | if (HWGROUP(drive)->resetting) { |
795 | spin_unlock_irqrestore(&ide_lock, flags); | |
796 | return -EBUSY; | |
797 | } | |
798 | ||
1da177e4 LT |
799 | ide_abort(drive, "drive reset"); |
800 | ||
125e1874 | 801 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 802 | |
1da177e4 LT |
803 | /* Ensure nothing gets queued after we |
804 | drop the lock. Reset will clear the busy */ | |
dbecebca | 805 | |
1da177e4 LT |
806 | HWGROUP(drive)->busy = 1; |
807 | spin_unlock_irqrestore(&ide_lock, flags); | |
808 | (void) ide_do_reset(drive); | |
809 | ||
810 | return 0; | |
1da177e4 LT |
811 | case HDIO_GET_BUSSTATE: |
812 | if (!capable(CAP_SYS_ADMIN)) | |
813 | return -EACCES; | |
814 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
815 | return -EFAULT; | |
816 | return 0; | |
817 | ||
818 | case HDIO_SET_BUSSTATE: | |
819 | if (!capable(CAP_SYS_ADMIN)) | |
820 | return -EACCES; | |
1da177e4 LT |
821 | return -EOPNOTSUPP; |
822 | default: | |
823 | return -EINVAL; | |
824 | } | |
1497943e BZ |
825 | |
826 | read_val: | |
f9383c42 | 827 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
828 | spin_lock_irqsave(&ide_lock, flags); |
829 | err = *val; | |
830 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 831 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
832 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
833 | ||
834 | set_val: | |
835 | if (bdev != bdev->bd_contains) | |
836 | err = -EINVAL; | |
837 | else { | |
838 | if (!capable(CAP_SYS_ADMIN)) | |
839 | err = -EACCES; | |
840 | else { | |
f9383c42 | 841 | mutex_lock(&ide_setting_mtx); |
1497943e | 842 | err = setfunc(drive, arg); |
f9383c42 | 843 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
844 | } |
845 | } | |
846 | return err; | |
1da177e4 LT |
847 | } |
848 | ||
849 | EXPORT_SYMBOL(generic_ide_ioctl); | |
850 | ||
851 | /* | |
852 | * stridx() returns the offset of c within s, | |
853 | * or -1 if c is '\0' or not found within s. | |
854 | */ | |
855 | static int __init stridx (const char *s, char c) | |
856 | { | |
857 | char *i = strchr(s, c); | |
858 | return (i && c) ? i - s : -1; | |
859 | } | |
860 | ||
861 | /* | |
862 | * match_parm() does parsing for ide_setup(): | |
863 | * | |
864 | * 1. the first char of s must be '='. | |
865 | * 2. if the remainder matches one of the supplied keywords, | |
866 | * the index (1 based) of the keyword is negated and returned. | |
867 | * 3. if the remainder is a series of no more than max_vals numbers | |
868 | * separated by commas, the numbers are saved in vals[] and a | |
869 | * count of how many were saved is returned. Base10 is assumed, | |
870 | * and base16 is allowed when prefixed with "0x". | |
871 | * 4. otherwise, zero is returned. | |
872 | */ | |
873 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
874 | { | |
875 | static const char *decimal = "0123456789"; | |
876 | static const char *hex = "0123456789abcdef"; | |
877 | int i, n; | |
878 | ||
879 | if (*s++ == '=') { | |
880 | /* | |
881 | * Try matching against the supplied keywords, | |
882 | * and return -(index+1) if we match one | |
883 | */ | |
884 | if (keywords != NULL) { | |
885 | for (i = 0; *keywords != NULL; ++i) { | |
886 | if (!strcmp(s, *keywords++)) | |
887 | return -(i+1); | |
888 | } | |
889 | } | |
890 | /* | |
891 | * Look for a series of no more than "max_vals" | |
892 | * numeric values separated by commas, in base10, | |
893 | * or base16 when prefixed with "0x". | |
894 | * Return a count of how many were found. | |
895 | */ | |
896 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
897 | vals[n] = i; | |
898 | while ((i = stridx(decimal, *++s)) >= 0) | |
899 | vals[n] = (vals[n] * 10) + i; | |
900 | if (*s == 'x' && !vals[n]) { | |
901 | while ((i = stridx(hex, *++s)) >= 0) | |
902 | vals[n] = (vals[n] * 0x10) + i; | |
903 | } | |
904 | if (++n == max_vals) | |
905 | break; | |
906 | if (*s == ',' || *s == ';') | |
907 | ++s; | |
908 | } | |
909 | if (!*s) | |
910 | return n; | |
911 | } | |
912 | return 0; /* zero = nothing matched */ | |
913 | } | |
914 | ||
84913882 | 915 | extern int probe_ali14xx; |
84913882 | 916 | extern int probe_umc8672; |
84913882 | 917 | extern int probe_dtc2278; |
84913882 | 918 | extern int probe_ht6560b; |
84913882 | 919 | extern int probe_qd65xx; |
ade2daf9 | 920 | extern int cmd640_vlb; |
ffd4f6f0 | 921 | extern int probe_4drives; |
1da177e4 | 922 | |
9a0e77f2 | 923 | static int __initdata is_chipset_set; |
1da177e4 LT |
924 | |
925 | /* | |
926 | * ide_setup() gets called VERY EARLY during initialization, | |
927 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
928 | * | |
1c10e938 | 929 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
930 | */ |
931 | static int __init ide_setup(char *s) | |
932 | { | |
933 | int i, vals[3]; | |
934 | ide_hwif_t *hwif; | |
935 | ide_drive_t *drive; | |
936 | unsigned int hw, unit; | |
937 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
938 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
939 | ||
940 | ||
941 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
942 | return 0; /* driver and not us */ | |
943 | ||
944 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
945 | return 0; | |
946 | ||
947 | printk(KERN_INFO "ide_setup: %s", s); | |
948 | init_ide_data (); | |
949 | ||
950 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
951 | if (!strcmp(s, "ide=doubler")) { | |
952 | extern int ide_doubler; | |
953 | ||
954 | printk(" : Enabled support for IDE doublers\n"); | |
955 | ide_doubler = 1; | |
956 | return 1; | |
957 | } | |
958 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
959 | ||
960 | if (!strcmp(s, "ide=nodma")) { | |
961 | printk(" : Prevented DMA\n"); | |
962 | noautodma = 1; | |
c223701c | 963 | goto obsolete_option; |
1da177e4 LT |
964 | } |
965 | ||
e3a59b4d HR |
966 | #ifdef CONFIG_BLK_DEV_IDEACPI |
967 | if (!strcmp(s, "ide=noacpi")) { | |
968 | //printk(" : Disable IDE ACPI support.\n"); | |
969 | ide_noacpi = 1; | |
970 | return 1; | |
971 | } | |
972 | if (!strcmp(s, "ide=acpigtf")) { | |
973 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
974 | ide_noacpitfs = 0; | |
975 | return 1; | |
976 | } | |
977 | if (!strcmp(s, "ide=acpionboot")) { | |
978 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
979 | ide_noacpionboot = 0; | |
980 | return 1; | |
981 | } | |
982 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
983 | ||
1da177e4 LT |
984 | /* |
985 | * Look for drive options: "hdx=" | |
986 | */ | |
987 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
988 | const char *hd_words[] = { | |
c223701c | 989 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 990 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 991 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
992 | unit = s[2] - 'a'; |
993 | hw = unit / MAX_DRIVES; | |
994 | unit = unit % MAX_DRIVES; | |
995 | hwif = &ide_hwifs[hw]; | |
996 | drive = &hwif->drives[unit]; | |
997 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
998 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 999 | goto obsolete_option; |
1da177e4 LT |
1000 | } |
1001 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1002 | case -1: /* "none" */ | |
1003 | case -2: /* "noprobe" */ | |
1004 | drive->noprobe = 1; | |
1005 | goto done; | |
1006 | case -3: /* "nowerr" */ | |
1007 | drive->bad_wstat = BAD_R_STAT; | |
1da177e4 LT |
1008 | goto done; |
1009 | case -4: /* "cdrom" */ | |
1010 | drive->present = 1; | |
1011 | drive->media = ide_cdrom; | |
1012 | /* an ATAPI device ignores DRDY */ | |
1013 | drive->ready_stat = 0; | |
1da177e4 | 1014 | goto done; |
c223701c BZ |
1015 | case -5: /* nodma */ |
1016 | drive->nodma = 1; | |
1017 | goto done; | |
1da177e4 LT |
1018 | case -6: /* "autotune" */ |
1019 | drive->autotune = IDE_TUNE_AUTO; | |
1020 | goto obsolete_option; | |
1021 | case -7: /* "noautotune" */ | |
1022 | drive->autotune = IDE_TUNE_NOAUTO; | |
1023 | goto obsolete_option; | |
36193484 JA |
1024 | case -11: /* noflush */ |
1025 | drive->noflush = 1; | |
1026 | goto done; | |
1da177e4 LT |
1027 | case -12: /* "remap" */ |
1028 | drive->remap_0_to_1 = 1; | |
d708c40d | 1029 | goto obsolete_option; |
1da177e4 LT |
1030 | case -13: /* "remap63" */ |
1031 | drive->sect0 = 63; | |
d708c40d | 1032 | goto obsolete_option; |
1da177e4 LT |
1033 | case -14: /* "scsi" */ |
1034 | drive->scsi = 1; | |
15220d9b | 1035 | goto obsolete_option; |
1da177e4 LT |
1036 | case 3: /* cyl,head,sect */ |
1037 | drive->media = ide_disk; | |
1038 | drive->ready_stat = READY_STAT; | |
1039 | drive->cyl = drive->bios_cyl = vals[0]; | |
1040 | drive->head = drive->bios_head = vals[1]; | |
1041 | drive->sect = drive->bios_sect = vals[2]; | |
1042 | drive->present = 1; | |
1043 | drive->forced_geom = 1; | |
1da177e4 LT |
1044 | goto done; |
1045 | default: | |
1046 | goto bad_option; | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1051 | goto bad_option; | |
1052 | /* | |
1053 | * Look for bus speed option: "idebus=" | |
1054 | */ | |
1055 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1056 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1057 | goto bad_option; | |
1058 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1059 | idebus_parameter = vals[0]; | |
1060 | } else | |
1061 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1062 | goto done; | |
1063 | } | |
1064 | /* | |
1065 | * Look for interface options: "idex=" | |
1066 | */ | |
1067 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1068 | /* | |
1069 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1070 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1071 | */ | |
1072 | static const char *ide_words[] = { | |
f01674e4 | 1073 | "minus1", "serialize", "minus3", "minus4", |
1b516940 | 1074 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1075 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1076 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 | 1077 | |
1da177e4 LT |
1078 | hw = s[3] - '0'; |
1079 | hwif = &ide_hwifs[hw]; | |
1080 | i = match_parm(&s[4], ide_words, vals, 3); | |
1081 | ||
1082 | /* | |
1083 | * Cryptic check to ensure chipset not already set for hwif. | |
1084 | * Note: we can't depend on hwif->chipset here. | |
1085 | */ | |
9a0e77f2 | 1086 | if (i >= -18 && i <= -11) { |
1da177e4 | 1087 | /* chipset already specified */ |
9a0e77f2 | 1088 | if (is_chipset_set) |
1da177e4 | 1089 | goto bad_option; |
9a0e77f2 BZ |
1090 | /* these drivers are for "ide0=" only */ |
1091 | if (hw != 0) | |
1092 | goto bad_hwif; | |
1093 | is_chipset_set = 1; | |
1da177e4 LT |
1094 | printk("\n"); |
1095 | } | |
1096 | ||
1097 | switch (i) { | |
1098 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1099 | case -17: /* "ali14xx" */ | |
1100 | probe_ali14xx = 1; | |
9c027c68 | 1101 | goto obsolete_option; |
1da177e4 LT |
1102 | #endif |
1103 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1104 | case -16: /* "umc8672" */ | |
1105 | probe_umc8672 = 1; | |
9c027c68 | 1106 | goto obsolete_option; |
1da177e4 LT |
1107 | #endif |
1108 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1109 | case -15: /* "dtc2278" */ | |
1110 | probe_dtc2278 = 1; | |
9c027c68 | 1111 | goto obsolete_option; |
1da177e4 LT |
1112 | #endif |
1113 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1114 | case -14: /* "cmd640_vlb" */ | |
1da177e4 | 1115 | cmd640_vlb = 1; |
9c027c68 | 1116 | goto obsolete_option; |
1da177e4 LT |
1117 | #endif |
1118 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1119 | case -13: /* "ht6560b" */ | |
1120 | probe_ht6560b = 1; | |
9c027c68 | 1121 | goto obsolete_option; |
1da177e4 LT |
1122 | #endif |
1123 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1124 | case -12: /* "qd65xx" */ | |
1125 | probe_qd65xx = 1; | |
9c027c68 | 1126 | goto obsolete_option; |
1da177e4 LT |
1127 | #endif |
1128 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1129 | case -11: /* "four" drives on one set of ports */ | |
ffd4f6f0 | 1130 | probe_4drives = 1; |
b6209a90 | 1131 | goto obsolete_option; |
ffd4f6f0 | 1132 | #endif |
1da177e4 LT |
1133 | case -10: /* minus10 */ |
1134 | case -9: /* minus9 */ | |
1135 | case -8: /* minus8 */ | |
1b516940 | 1136 | case -6: |
b6209a90 BZ |
1137 | case -4: |
1138 | case -3: | |
1da177e4 LT |
1139 | goto bad_option; |
1140 | case -7: /* ata66 */ | |
1141 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1142 | /* |
1143 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1144 | * cable detection is also overriden. | |
1145 | */ | |
1146 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1147 | goto obsolete_option; |
1148 | #else | |
1149 | goto bad_hwif; | |
1150 | #endif | |
1da177e4 LT |
1151 | case -5: /* "reset" */ |
1152 | hwif->reset = 1; | |
1153 | goto obsolete_option; | |
1da177e4 | 1154 | case -2: /* "serialize" */ |
1da177e4 LT |
1155 | hwif->mate = &ide_hwifs[hw^1]; |
1156 | hwif->mate->mate = hwif; | |
1157 | hwif->serialized = hwif->mate->serialized = 1; | |
1158 | goto obsolete_option; | |
1159 | ||
f01674e4 | 1160 | case -1: |
9a0e77f2 BZ |
1161 | case 0: |
1162 | case 1: | |
1163 | case 2: | |
1164 | case 3: | |
1165 | goto bad_option; | |
1da177e4 LT |
1166 | default: |
1167 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1168 | return 1; | |
1169 | } | |
1170 | } | |
1171 | bad_option: | |
1172 | printk(" -- BAD OPTION\n"); | |
1173 | return 1; | |
1174 | obsolete_option: | |
1175 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1176 | return 1; | |
1177 | bad_hwif: | |
1178 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1179 | done: | |
1180 | printk("\n"); | |
1181 | return 1; | |
1182 | } | |
1183 | ||
1da177e4 LT |
1184 | EXPORT_SYMBOL(ide_lock); |
1185 | ||
8604affd BZ |
1186 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1187 | { | |
1188 | return 1; | |
1189 | } | |
1190 | ||
263756ec KS |
1191 | static char *media_string(ide_drive_t *drive) |
1192 | { | |
1193 | switch (drive->media) { | |
1194 | case ide_disk: | |
1195 | return "disk"; | |
1196 | case ide_cdrom: | |
1197 | return "cdrom"; | |
1198 | case ide_tape: | |
1199 | return "tape"; | |
1200 | case ide_floppy: | |
1201 | return "floppy"; | |
a7a832de DK |
1202 | case ide_optical: |
1203 | return "optical"; | |
263756ec KS |
1204 | default: |
1205 | return "UNKNOWN"; | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1210 | { | |
1211 | ide_drive_t *drive = to_ide_device(dev); | |
1212 | return sprintf(buf, "%s\n", media_string(drive)); | |
1213 | } | |
1214 | ||
1215 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1216 | { | |
1217 | ide_drive_t *drive = to_ide_device(dev); | |
1218 | return sprintf(buf, "%s\n", drive->name); | |
1219 | } | |
1220 | ||
1221 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1222 | { | |
1223 | ide_drive_t *drive = to_ide_device(dev); | |
1224 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1225 | } | |
1226 | ||
e11b9035 BZ |
1227 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1228 | char *buf) | |
1229 | { | |
1230 | ide_drive_t *drive = to_ide_device(dev); | |
1231 | return sprintf(buf, "%s\n", drive->id->model); | |
1232 | } | |
1233 | ||
1234 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1235 | char *buf) | |
1236 | { | |
1237 | ide_drive_t *drive = to_ide_device(dev); | |
1238 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1239 | } | |
1240 | ||
1241 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1242 | char *buf) | |
1243 | { | |
1244 | ide_drive_t *drive = to_ide_device(dev); | |
1245 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1246 | } | |
1247 | ||
263756ec KS |
1248 | static struct device_attribute ide_dev_attrs[] = { |
1249 | __ATTR_RO(media), | |
1250 | __ATTR_RO(drivename), | |
1251 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1252 | __ATTR_RO(model), |
1253 | __ATTR_RO(firmware), | |
1254 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1255 | __ATTR_NULL |
1256 | }; | |
1257 | ||
7eff2e7a | 1258 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1259 | { |
1260 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1261 | |
1262 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1263 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1264 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1265 | return 0; |
1266 | } | |
1267 | ||
4031bbe4 RK |
1268 | static int generic_ide_probe(struct device *dev) |
1269 | { | |
1270 | ide_drive_t *drive = to_ide_device(dev); | |
1271 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1272 | ||
1273 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1274 | } | |
1275 | ||
1276 | static int generic_ide_remove(struct device *dev) | |
1277 | { | |
1278 | ide_drive_t *drive = to_ide_device(dev); | |
1279 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1280 | ||
1281 | if (drv->remove) | |
1282 | drv->remove(drive); | |
1283 | ||
1284 | return 0; | |
1285 | } | |
1286 | ||
1287 | static void generic_ide_shutdown(struct device *dev) | |
1288 | { | |
1289 | ide_drive_t *drive = to_ide_device(dev); | |
1290 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1291 | ||
1292 | if (dev->driver && drv->shutdown) | |
1293 | drv->shutdown(drive); | |
1294 | } | |
1295 | ||
1da177e4 LT |
1296 | struct bus_type ide_bus_type = { |
1297 | .name = "ide", | |
8604affd | 1298 | .match = ide_bus_match, |
263756ec | 1299 | .uevent = ide_uevent, |
4031bbe4 RK |
1300 | .probe = generic_ide_probe, |
1301 | .remove = generic_ide_remove, | |
1302 | .shutdown = generic_ide_shutdown, | |
263756ec | 1303 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1304 | .suspend = generic_ide_suspend, |
1305 | .resume = generic_ide_resume, | |
1306 | }; | |
1307 | ||
8604affd BZ |
1308 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1309 | ||
f74c9141 BZ |
1310 | static void ide_port_class_release(struct device *portdev) |
1311 | { | |
1312 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1313 | ||
1314 | put_device(&hwif->gendev); | |
1315 | } | |
1316 | ||
1da177e4 LT |
1317 | /* |
1318 | * This is gets invoked once during initialization, to set *everything* up | |
1319 | */ | |
1320 | static int __init ide_init(void) | |
1321 | { | |
349ae23f RD |
1322 | int ret; |
1323 | ||
eba8ff94 | 1324 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1325 | system_bus_speed = ide_system_bus_speed(); |
1326 | ||
537f06c5 BZ |
1327 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1328 | "for PIO modes%s\n", system_bus_speed, | |
1329 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1330 | ||
349ae23f RD |
1331 | ret = bus_register(&ide_bus_type); |
1332 | if (ret < 0) { | |
1333 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1334 | return ret; | |
1335 | } | |
1da177e4 | 1336 | |
f74c9141 BZ |
1337 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1338 | if (IS_ERR(ide_port_class)) { | |
1339 | ret = PTR_ERR(ide_port_class); | |
1340 | goto out_port_class; | |
1341 | } | |
1342 | ide_port_class->dev_release = ide_port_class_release; | |
1343 | ||
1da177e4 LT |
1344 | init_ide_data(); |
1345 | ||
5cbf79cd | 1346 | proc_ide_create(); |
1da177e4 | 1347 | |
1da177e4 | 1348 | return 0; |
f74c9141 BZ |
1349 | |
1350 | out_port_class: | |
1351 | bus_unregister(&ide_bus_type); | |
1352 | ||
1353 | return ret; | |
1da177e4 LT |
1354 | } |
1355 | ||
1356 | #ifdef MODULE | |
1357 | static char *options = NULL; | |
1358 | module_param(options, charp, 0); | |
1359 | MODULE_LICENSE("GPL"); | |
1360 | ||
1361 | static void __init parse_options (char *line) | |
1362 | { | |
1363 | char *next = line; | |
1364 | ||
1365 | if (line == NULL || !*line) | |
1366 | return; | |
1367 | while ((line = next) != NULL) { | |
1368 | if ((next = strchr(line,' ')) != NULL) | |
1369 | *next++ = 0; | |
1370 | if (!ide_setup(line)) | |
1371 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1372 | } | |
1373 | } | |
1374 | ||
fbd8ad30 | 1375 | int __init init_module (void) |
1da177e4 LT |
1376 | { |
1377 | parse_options(options); | |
1378 | return ide_init(); | |
1379 | } | |
1380 | ||
eb797227 | 1381 | void __exit cleanup_module (void) |
1da177e4 LT |
1382 | { |
1383 | int index; | |
1384 | ||
1385 | for (index = 0; index < MAX_HWIFS; ++index) | |
93de00fd | 1386 | ide_unregister(index); |
1da177e4 | 1387 | |
1da177e4 | 1388 | proc_ide_destroy(); |
1da177e4 | 1389 | |
f74c9141 BZ |
1390 | class_destroy(ide_port_class); |
1391 | ||
1da177e4 LT |
1392 | bus_unregister(&ide_bus_type); |
1393 | } | |
1394 | ||
1395 | #else /* !MODULE */ | |
1396 | ||
1397 | __setup("", ide_setup); | |
1398 | ||
1399 | module_init(ide_init); | |
1400 | ||
1401 | #endif /* MODULE */ |