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 LT |
103 | /* |
104 | * This is declared extern in ide.h, for access by other IDE modules: | |
105 | */ | |
106 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ | |
107 | ||
108 | EXPORT_SYMBOL(ide_hwifs); | |
109 | ||
43514ed1 BZ |
110 | static void ide_port_init_devices_data(ide_hwif_t *); |
111 | ||
1da177e4 LT |
112 | /* |
113 | * Do not even *think* about calling this! | |
114 | */ | |
cbb010c1 | 115 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 116 | { |
1da177e4 LT |
117 | /* bulk initialize hwif & drive info with zeros */ |
118 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
119 | ||
120 | /* fill in any non-zero initial values */ | |
121 | hwif->index = index; | |
122 | hwif->major = ide_hwif_to_major[index]; | |
123 | ||
124 | hwif->name[0] = 'i'; | |
125 | hwif->name[1] = 'd'; | |
126 | hwif->name[2] = 'e'; | |
127 | hwif->name[3] = '0' + index; | |
128 | ||
129 | hwif->bus_state = BUSSTATE_ON; | |
130 | ||
f36d4024 | 131 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
132 | |
133 | default_hwif_iops(hwif); | |
134 | default_hwif_transport(hwif); | |
43514ed1 BZ |
135 | |
136 | ide_port_init_devices_data(hwif); | |
137 | } | |
138 | EXPORT_SYMBOL_GPL(ide_init_port_data); | |
139 | ||
140 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
141 | { | |
142 | int unit; | |
143 | ||
1da177e4 LT |
144 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
145 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
146 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
147 | ||
148 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
149 | |
150 | drive->media = ide_disk; | |
151 | drive->select.all = (unit<<4)|0xa0; | |
152 | drive->hwif = hwif; | |
153 | drive->ctl = 0x08; | |
154 | drive->ready_stat = READY_STAT; | |
155 | drive->bad_wstat = BAD_W_STAT; | |
156 | drive->special.b.recalibrate = 1; | |
157 | drive->special.b.set_geometry = 1; | |
158 | drive->name[0] = 'h'; | |
159 | drive->name[1] = 'd'; | |
43514ed1 | 160 | drive->name[2] = 'a' + j; |
1da177e4 | 161 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 162 | |
1da177e4 | 163 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 164 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
165 | } |
166 | } | |
43514ed1 | 167 | |
0e33555f BZ |
168 | #ifndef CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS |
169 | # define ide_default_io_base(index) (0) | |
170 | # define ide_init_default_irq(base) (0) | |
171 | #endif | |
1da177e4 | 172 | |
1da177e4 LT |
173 | /* |
174 | * init_ide_data() sets reasonable default values into all fields | |
175 | * of all instances of the hwifs and drives, but only on the first call. | |
176 | * Subsequent calls have no effect (they don't wipe out anything). | |
177 | * | |
178 | * This routine is normally called at driver initialization time, | |
179 | * but may also be called MUCH earlier during kernel "command-line" | |
180 | * parameter processing. As such, we cannot depend on any other parts | |
181 | * of the kernel (such as memory allocation) to be functioning yet. | |
182 | * | |
183 | * This is too bad, as otherwise we could dynamically allocate the | |
184 | * ide_drive_t structs as needed, rather than always consuming memory | |
185 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
186 | * | |
187 | * FIXME: We should stuff the setup data into __init and copy the | |
188 | * relevant hwifs/allocate them properly during boot. | |
189 | */ | |
190 | #define MAGIC_COOKIE 0x12345678 | |
191 | static void __init init_ide_data (void) | |
192 | { | |
1da177e4 LT |
193 | unsigned int index; |
194 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
05734266 | 195 | hw_regs_t hw; |
1da177e4 LT |
196 | |
197 | if (magic_cookie != MAGIC_COOKIE) | |
198 | return; /* already initialized */ | |
199 | magic_cookie = 0; | |
200 | ||
201 | /* Initialise all interface structures */ | |
202 | for (index = 0; index < MAX_HWIFS; ++index) { | |
05734266 | 203 | ide_hwif_t *hwif = &ide_hwifs[index]; |
e6bfa38a BZ |
204 | unsigned long io_addr = ide_default_io_base(index); |
205 | unsigned long ctl_addr = ide_default_io_ctl(io_addr); | |
05734266 | 206 | |
cbb010c1 | 207 | ide_init_port_data(hwif, index); |
05734266 | 208 | |
e6bfa38a | 209 | #ifdef CONFIG_IDE_ARCH_OBSOLETE_INIT |
05734266 | 210 | memset(&hw, 0, sizeof(hw)); |
e6bfa38a | 211 | ide_std_init_ports(&hw, io_addr, ctl_addr); |
05734266 | 212 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
e6bfa38a | 213 | #endif |
05734266 | 214 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; |
5d682e44 | 215 | #if !defined(CONFIG_PPC32) || defined(CONFIG_PPLUS) || !defined(CONFIG_PCI) |
9239b333 | 216 | hwif->irq = |
1da177e4 LT |
217 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
218 | #endif | |
219 | } | |
1da177e4 LT |
220 | } |
221 | ||
222 | /** | |
223 | * ide_system_bus_speed - guess bus speed | |
224 | * | |
225 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
226 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
227 | * The default is 40 for known PCI systems, 50 otherwise. | |
228 | * The "idebus=xx" parameter can be used to override this value. | |
229 | * The actual value to be used is computed/displayed the first time | |
230 | * through. Drivers should only use this as a last resort. | |
231 | * | |
232 | * Returns a guessed speed in MHz. | |
233 | */ | |
234 | ||
235 | static int ide_system_bus_speed(void) | |
236 | { | |
237 | #ifdef CONFIG_PCI | |
238 | static struct pci_device_id pci_default[] = { | |
239 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
240 | { } | |
241 | }; | |
242 | #else | |
243 | #define pci_default 0 | |
244 | #endif /* CONFIG_PCI */ | |
245 | ||
537f06c5 BZ |
246 | /* user supplied value */ |
247 | if (idebus_parameter) | |
248 | return idebus_parameter; | |
249 | ||
250 | /* safe default value for PCI or VESA and PCI*/ | |
251 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
252 | } |
253 | ||
baa8f3e9 BZ |
254 | ide_hwif_t * ide_find_port(unsigned long base) |
255 | { | |
256 | ide_hwif_t *hwif; | |
257 | int i; | |
258 | ||
259 | for (i = 0; i < MAX_HWIFS; i++) { | |
260 | hwif = &ide_hwifs[i]; | |
261 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
262 | goto found; | |
263 | } | |
264 | ||
265 | for (i = 0; i < MAX_HWIFS; i++) { | |
266 | hwif = &ide_hwifs[i]; | |
2625cd52 | 267 | if (hwif->chipset == ide_unknown) |
baa8f3e9 BZ |
268 | goto found; |
269 | } | |
270 | ||
271 | hwif = NULL; | |
272 | found: | |
273 | return hwif; | |
274 | } | |
275 | ||
276 | EXPORT_SYMBOL_GPL(ide_find_port); | |
277 | ||
1da177e4 LT |
278 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
279 | unsigned long addr, int num) | |
280 | { | |
281 | struct resource *res = request_region(addr, num, hwif->name); | |
282 | ||
283 | if (!res) | |
284 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
285 | hwif->name, addr, addr+num-1); | |
286 | return res; | |
287 | } | |
288 | ||
289 | /** | |
290 | * ide_hwif_request_regions - request resources for IDE | |
291 | * @hwif: interface to use | |
292 | * | |
293 | * Requests all the needed resources for an interface. | |
294 | * Right now core IDE code does this work which is deeply wrong. | |
295 | * MMIO leaves it to the controller driver, | |
296 | * PIO will migrate this way over time. | |
297 | */ | |
298 | ||
299 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
300 | { | |
301 | unsigned long addr; | |
302 | unsigned int i; | |
303 | ||
2ad1e558 | 304 | if (hwif->mmio) |
1da177e4 | 305 | return 0; |
1da177e4 LT |
306 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
307 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
308 | goto control_region_busy; | |
309 | hwif->straight8 = 0; | |
310 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
311 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
312 | if (!hwif_request_region(hwif, addr, 8)) | |
313 | goto data_region_busy; | |
314 | hwif->straight8 = 1; | |
315 | return 0; | |
316 | } | |
317 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
318 | addr = hwif->io_ports[i]; | |
319 | if (!hwif_request_region(hwif, addr, 1)) { | |
320 | while (--i) | |
321 | release_region(addr, 1); | |
322 | goto data_region_busy; | |
323 | } | |
324 | } | |
325 | return 0; | |
326 | ||
327 | data_region_busy: | |
328 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
329 | if (addr) | |
330 | release_region(addr, 1); | |
331 | control_region_busy: | |
332 | /* If any errors are return, we drop the hwif interface. */ | |
333 | return -EBUSY; | |
334 | } | |
335 | ||
336 | /** | |
337 | * ide_hwif_release_regions - free IDE resources | |
338 | * | |
339 | * Note that we only release the standard ports, | |
340 | * and do not even try to handle any extra ports | |
341 | * allocated for weird IDE interface chipsets. | |
342 | * | |
343 | * Note also that we don't yet handle mmio resources here. More | |
344 | * importantly our caller should be doing this so we need to | |
345 | * restructure this as a helper function for drivers. | |
346 | */ | |
347 | ||
348 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
349 | { | |
350 | u32 i = 0; | |
351 | ||
2ad1e558 | 352 | if (hwif->mmio) |
1da177e4 LT |
353 | return; |
354 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
355 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
356 | if (hwif->straight8) { | |
357 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
358 | return; | |
359 | } | |
360 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
361 | if (hwif->io_ports[i]) | |
362 | release_region(hwif->io_ports[i], 1); | |
363 | } | |
364 | ||
fbd13088 | 365 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
366 | { |
367 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
368 | ||
369 | spin_lock_irq(&ide_lock); | |
370 | /* | |
371 | * Remove us from the hwgroup, and free | |
372 | * the hwgroup if we were the only member | |
373 | */ | |
374 | if (hwif->next == hwif) { | |
375 | BUG_ON(hwgroup->hwif != hwif); | |
376 | kfree(hwgroup); | |
377 | } else { | |
378 | /* There is another interface in hwgroup. | |
379 | * Unlink us, and set hwgroup->drive and ->hwif to | |
380 | * something sane. | |
381 | */ | |
382 | ide_hwif_t *g = hwgroup->hwif; | |
383 | ||
384 | while (g->next != hwif) | |
385 | g = g->next; | |
386 | g->next = hwif->next; | |
387 | if (hwgroup->hwif == hwif) { | |
388 | /* Chose a random hwif for hwgroup->hwif. | |
389 | * It's guaranteed that there are no drives | |
390 | * left in the hwgroup. | |
391 | */ | |
392 | BUG_ON(hwgroup->drive != NULL); | |
393 | hwgroup->hwif = g; | |
394 | } | |
395 | BUG_ON(hwgroup->hwif == hwif); | |
396 | } | |
397 | spin_unlock_irq(&ide_lock); | |
398 | } | |
399 | ||
71bf9f6f | 400 | /* Called with ide_lock held. */ |
2dde7861 | 401 | static void __ide_port_unregister_devices(ide_hwif_t *hwif) |
71bf9f6f BZ |
402 | { |
403 | int i; | |
404 | ||
405 | for (i = 0; i < MAX_DRIVES; i++) { | |
406 | ide_drive_t *drive = &hwif->drives[i]; | |
407 | ||
408 | if (drive->present) { | |
409 | spin_unlock_irq(&ide_lock); | |
410 | device_unregister(&drive->gendev); | |
411 | wait_for_completion(&drive->gendev_rel_comp); | |
412 | spin_lock_irq(&ide_lock); | |
413 | } | |
414 | } | |
415 | } | |
416 | ||
2dde7861 BZ |
417 | void ide_port_unregister_devices(ide_hwif_t *hwif) |
418 | { | |
419 | mutex_lock(&ide_cfg_mtx); | |
420 | spin_lock_irq(&ide_lock); | |
421 | __ide_port_unregister_devices(hwif); | |
422 | hwif->present = 0; | |
423 | ide_port_init_devices_data(hwif); | |
424 | spin_unlock_irq(&ide_lock); | |
425 | mutex_unlock(&ide_cfg_mtx); | |
426 | } | |
427 | EXPORT_SYMBOL_GPL(ide_port_unregister_devices); | |
428 | ||
1da177e4 | 429 | /** |
020e322d | 430 | * ide_unregister - free an IDE interface |
1da177e4 LT |
431 | * @index: index of interface (will change soon to a pointer) |
432 | * | |
433 | * Perform the final unregister of an IDE interface. At the moment | |
434 | * we don't refcount interfaces so this will also get split up. | |
435 | * | |
436 | * Locking: | |
437 | * The caller must not hold the IDE locks | |
438 | * The drive present/vanishing is not yet properly locked | |
439 | * Take care with the callbacks. These have been split to avoid | |
440 | * deadlocking the IDE layer. The shutdown callback is called | |
441 | * before we take the lock and free resources. It is up to the | |
442 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
443 | * the interface will not be reopened (present/vanishing locking |
444 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
445 | * call the cleanup callback with the ide locks held. |
446 | * | |
447 | * Unregister restores the hwif structures to the default state. | |
448 | * This is raving bonkers. | |
449 | */ | |
450 | ||
93de00fd | 451 | void ide_unregister(unsigned int index) |
1da177e4 | 452 | { |
1da177e4 | 453 | ide_hwif_t *hwif, *g; |
1da177e4 | 454 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 455 | int irq_count = 0; |
1da177e4 LT |
456 | |
457 | BUG_ON(index >= MAX_HWIFS); | |
458 | ||
459 | BUG_ON(in_interrupt()); | |
460 | BUG_ON(irqs_disabled()); | |
ef29888e | 461 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
462 | spin_lock_irq(&ide_lock); |
463 | hwif = &ide_hwifs[index]; | |
464 | if (!hwif->present) | |
465 | goto abort; | |
2dde7861 | 466 | __ide_port_unregister_devices(hwif); |
1da177e4 LT |
467 | hwif->present = 0; |
468 | ||
469 | spin_unlock_irq(&ide_lock); | |
470 | ||
5cbf79cd | 471 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
472 | |
473 | hwgroup = hwif->hwgroup; | |
474 | /* | |
475 | * free the irq if we were the only hwif using it | |
476 | */ | |
477 | g = hwgroup->hwif; | |
478 | do { | |
479 | if (g->irq == hwif->irq) | |
480 | ++irq_count; | |
481 | g = g->next; | |
482 | } while (g != hwgroup->hwif); | |
483 | if (irq_count == 1) | |
484 | free_irq(hwif->irq, hwgroup); | |
485 | ||
96e5ad30 | 486 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 487 | |
f74c9141 | 488 | device_unregister(hwif->portdev); |
1da177e4 | 489 | device_unregister(&hwif->gendev); |
f36d4024 | 490 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
491 | |
492 | /* | |
493 | * Remove us from the kernel's knowledge | |
494 | */ | |
495 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
496 | kfree(hwif->sg_table); | |
497 | unregister_blkdev(hwif->major, hwif->name); | |
498 | spin_lock_irq(&ide_lock); | |
499 | ||
93de00fd BZ |
500 | if (hwif->dma_base) |
501 | (void)ide_release_dma(hwif); | |
1da177e4 | 502 | |
7cba97f1 BZ |
503 | ide_hwif_release_regions(hwif); |
504 | ||
1da177e4 | 505 | /* restore hwif data to pristine status */ |
cbb010c1 | 506 | ide_init_port_data(hwif, index); |
1da177e4 | 507 | |
1da177e4 LT |
508 | abort: |
509 | spin_unlock_irq(&ide_lock); | |
ef29888e | 510 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
511 | } |
512 | ||
513 | EXPORT_SYMBOL(ide_unregister); | |
514 | ||
57c802e8 BZ |
515 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
516 | { | |
517 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
518 | hwif->irq = hw->irq; | |
519 | hwif->noprobe = 0; | |
520 | hwif->chipset = hw->chipset; | |
521 | hwif->gendev.parent = hw->dev; | |
522 | hwif->ack_intr = hw->ack_intr; | |
523 | } | |
524 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
525 | ||
1da177e4 LT |
526 | /* |
527 | * Locks for IDE setting functionality | |
528 | */ | |
529 | ||
f9383c42 | 530 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 531 | |
f9383c42 | 532 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 533 | |
1da177e4 LT |
534 | /** |
535 | * ide_spin_wait_hwgroup - wait for group | |
536 | * @drive: drive in the group | |
537 | * | |
538 | * Wait for an IDE device group to go non busy and then return | |
539 | * holding the ide_lock which guards the hwgroup->busy status | |
540 | * and right to use it. | |
541 | */ | |
542 | ||
543 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
544 | { | |
545 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
546 | unsigned long timeout = jiffies + (3 * HZ); | |
547 | ||
548 | spin_lock_irq(&ide_lock); | |
549 | ||
550 | while (hwgroup->busy) { | |
551 | unsigned long lflags; | |
552 | spin_unlock_irq(&ide_lock); | |
553 | local_irq_set(lflags); | |
554 | if (time_after(jiffies, timeout)) { | |
555 | local_irq_restore(lflags); | |
556 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
557 | return -EBUSY; | |
558 | } | |
559 | local_irq_restore(lflags); | |
560 | spin_lock_irq(&ide_lock); | |
561 | } | |
562 | return 0; | |
563 | } | |
564 | ||
565 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
566 | ||
7662d046 | 567 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 568 | { |
1497943e BZ |
569 | if (drive->no_io_32bit) |
570 | return -EPERM; | |
571 | ||
572 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
573 | return -EINVAL; | |
574 | ||
644a9d76 BZ |
575 | if (ide_spin_wait_hwgroup(drive)) |
576 | return -EBUSY; | |
577 | ||
1da177e4 | 578 | drive->io_32bit = arg; |
644a9d76 BZ |
579 | |
580 | spin_unlock_irq(&ide_lock); | |
581 | ||
1da177e4 LT |
582 | return 0; |
583 | } | |
584 | ||
1497943e BZ |
585 | static int set_ksettings(ide_drive_t *drive, int arg) |
586 | { | |
587 | if (arg < 0 || arg > 1) | |
588 | return -EINVAL; | |
589 | ||
590 | if (ide_spin_wait_hwgroup(drive)) | |
591 | return -EBUSY; | |
592 | drive->keep_settings = arg; | |
593 | spin_unlock_irq(&ide_lock); | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
7662d046 | 598 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
599 | { |
600 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
601 | ide_hwif_t *hwif = drive->hwif; |
602 | int err = -EPERM; | |
603 | ||
1497943e BZ |
604 | if (arg < 0 || arg > 1) |
605 | return -EINVAL; | |
606 | ||
1da177e4 | 607 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
608 | goto out; |
609 | ||
15ce926a | 610 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
611 | goto out; |
612 | ||
613 | err = -EBUSY; | |
614 | if (ide_spin_wait_hwgroup(drive)) | |
615 | goto out; | |
616 | /* | |
617 | * set ->busy flag, unlock and let it ride | |
618 | */ | |
619 | hwif->hwgroup->busy = 1; | |
620 | spin_unlock_irq(&ide_lock); | |
621 | ||
622 | err = 0; | |
623 | ||
1da177e4 | 624 | if (arg) { |
23b1bd45 | 625 | if (ide_set_dma(drive)) |
87996204 | 626 | err = -EIO; |
7469aaf6 BZ |
627 | } else |
628 | ide_dma_off(drive); | |
87996204 BZ |
629 | |
630 | /* | |
631 | * lock, clear ->busy flag and unlock before leaving | |
632 | */ | |
633 | spin_lock_irq(&ide_lock); | |
634 | hwif->hwgroup->busy = 0; | |
635 | spin_unlock_irq(&ide_lock); | |
636 | out: | |
637 | return err; | |
1da177e4 | 638 | #else |
1497943e BZ |
639 | if (arg < 0 || arg > 1) |
640 | return -EINVAL; | |
641 | ||
1da177e4 LT |
642 | return -EPERM; |
643 | #endif | |
644 | } | |
645 | ||
7662d046 | 646 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
647 | { |
648 | struct request rq; | |
649 | ||
1497943e BZ |
650 | if (arg < 0 || arg > 255) |
651 | return -EINVAL; | |
652 | ||
26bcb879 | 653 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 654 | return -ENOSYS; |
26bcb879 | 655 | |
1da177e4 LT |
656 | if (drive->special.b.set_tune) |
657 | return -EBUSY; | |
145b75e9 | 658 | |
1da177e4 | 659 | ide_init_drive_cmd(&rq); |
852738f3 | 660 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 661 | |
1da177e4 LT |
662 | drive->tune_req = (u8) arg; |
663 | drive->special.b.set_tune = 1; | |
664 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
665 | return 0; | |
666 | } | |
667 | ||
1497943e BZ |
668 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
669 | { | |
670 | if (drive->no_unmask) | |
671 | return -EPERM; | |
672 | ||
673 | if (arg < 0 || arg > 1) | |
674 | return -EINVAL; | |
675 | ||
676 | if (ide_spin_wait_hwgroup(drive)) | |
677 | return -EBUSY; | |
678 | drive->unmask = arg; | |
679 | spin_unlock_irq(&ide_lock); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
1da177e4 LT |
684 | /** |
685 | * system_bus_clock - clock guess | |
686 | * | |
687 | * External version of the bus clock guess used by very old IDE drivers | |
688 | * for things like VLB timings. Should not be used. | |
689 | */ | |
690 | ||
691 | int system_bus_clock (void) | |
692 | { | |
537f06c5 | 693 | return system_bus_speed; |
1da177e4 LT |
694 | } |
695 | ||
696 | EXPORT_SYMBOL(system_bus_clock); | |
697 | ||
b887d2e6 | 698 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
699 | { |
700 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 701 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
702 | struct request rq; |
703 | struct request_pm_state rqpm; | |
704 | ide_task_t args; | |
5e32132b | 705 | int ret; |
1da177e4 | 706 | |
e3a59b4d HR |
707 | /* Call ACPI _GTM only once */ |
708 | if (!(drive->dn % 2)) | |
709 | ide_acpi_get_timing(hwif); | |
710 | ||
1da177e4 LT |
711 | memset(&rq, 0, sizeof(rq)); |
712 | memset(&rqpm, 0, sizeof(rqpm)); | |
713 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 714 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 715 | rq.special = &args; |
c00895ab | 716 | rq.data = &rqpm; |
1da177e4 | 717 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
718 | if (mesg.event == PM_EVENT_PRETHAW) |
719 | mesg.event = PM_EVENT_FREEZE; | |
720 | rqpm.pm_state = mesg.event; | |
1da177e4 | 721 | |
5e32132b SL |
722 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
723 | /* only call ACPI _PS3 after both drivers are suspended */ | |
724 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
725 | && hwif->drives[1].present) | |
726 | || !hwif->drives[0].present | |
727 | || !hwif->drives[1].present)) | |
728 | ide_acpi_set_state(hwif, 0); | |
729 | return ret; | |
1da177e4 LT |
730 | } |
731 | ||
732 | static int generic_ide_resume(struct device *dev) | |
733 | { | |
734 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 735 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
736 | struct request rq; |
737 | struct request_pm_state rqpm; | |
738 | ide_task_t args; | |
0d2157f7 | 739 | int err; |
1da177e4 | 740 | |
e3a59b4d | 741 | /* Call ACPI _STM only once */ |
5e32132b SL |
742 | if (!(drive->dn % 2)) { |
743 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 744 | ide_acpi_push_timing(hwif); |
5e32132b | 745 | } |
e3a59b4d HR |
746 | |
747 | ide_acpi_exec_tfs(drive); | |
748 | ||
1da177e4 LT |
749 | memset(&rq, 0, sizeof(rq)); |
750 | memset(&rqpm, 0, sizeof(rqpm)); | |
751 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 752 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 753 | rq.special = &args; |
c00895ab | 754 | rq.data = &rqpm; |
1da177e4 | 755 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 756 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 757 | |
0d2157f7 LT |
758 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
759 | ||
ce9b2b0a RW |
760 | if (err == 0 && dev->driver) { |
761 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
762 | ||
763 | if (drv->resume) | |
764 | drv->resume(drive); | |
765 | } | |
0d2157f7 LT |
766 | |
767 | return err; | |
1da177e4 LT |
768 | } |
769 | ||
770 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
771 | unsigned int cmd, unsigned long arg) | |
772 | { | |
1497943e | 773 | unsigned long flags; |
1da177e4 | 774 | ide_driver_t *drv; |
1da177e4 | 775 | void __user *p = (void __user *)arg; |
1985026d | 776 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 777 | u8 *val; |
1da177e4 | 778 | |
1497943e BZ |
779 | switch (cmd) { |
780 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
781 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
782 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
783 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
784 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
785 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
786 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
787 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
788 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 789 | } |
1da177e4 LT |
790 | |
791 | switch (cmd) { | |
1da177e4 LT |
792 | case HDIO_OBSOLETE_IDENTITY: |
793 | case HDIO_GET_IDENTITY: | |
794 | if (bdev != bdev->bd_contains) | |
795 | return -EINVAL; | |
796 | if (drive->id_read == 0) | |
797 | return -ENOMSG; | |
798 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
799 | return -EFAULT; | |
800 | return 0; | |
801 | ||
802 | case HDIO_GET_NICE: | |
803 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
804 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 805 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 806 | (long __user *) arg); |
1da177e4 LT |
807 | #ifdef CONFIG_IDE_TASK_IOCTL |
808 | case HDIO_DRIVE_TASKFILE: | |
809 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
810 | return -EACCES; | |
811 | switch(drive->media) { | |
812 | case ide_disk: | |
813 | return ide_taskfile_ioctl(drive, cmd, arg); | |
814 | default: | |
815 | return -ENOMSG; | |
816 | } | |
817 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
818 | ||
819 | case HDIO_DRIVE_CMD: | |
820 | if (!capable(CAP_SYS_RAWIO)) | |
821 | return -EACCES; | |
822 | return ide_cmd_ioctl(drive, cmd, arg); | |
823 | ||
824 | case HDIO_DRIVE_TASK: | |
825 | if (!capable(CAP_SYS_RAWIO)) | |
826 | return -EACCES; | |
827 | return ide_task_ioctl(drive, cmd, arg); | |
1da177e4 LT |
828 | case HDIO_SET_NICE: |
829 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
830 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
831 | return -EPERM; | |
832 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
833 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
834 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
835 | drive->dsc_overlap = 0; | |
836 | return -EPERM; | |
837 | } | |
838 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
839 | return 0; | |
840 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
841 | if (!capable(CAP_SYS_ADMIN)) |
842 | return -EACCES; | |
843 | ||
1da177e4 LT |
844 | /* |
845 | * Abort the current command on the | |
846 | * group if there is one, taking | |
847 | * care not to allow anything else | |
848 | * to be queued and to die on the | |
849 | * spot if we miss one somehow | |
850 | */ | |
851 | ||
852 | spin_lock_irqsave(&ide_lock, flags); | |
853 | ||
913759ac AC |
854 | if (HWGROUP(drive)->resetting) { |
855 | spin_unlock_irqrestore(&ide_lock, flags); | |
856 | return -EBUSY; | |
857 | } | |
858 | ||
1da177e4 LT |
859 | ide_abort(drive, "drive reset"); |
860 | ||
125e1874 | 861 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 862 | |
1da177e4 LT |
863 | /* Ensure nothing gets queued after we |
864 | drop the lock. Reset will clear the busy */ | |
dbecebca | 865 | |
1da177e4 LT |
866 | HWGROUP(drive)->busy = 1; |
867 | spin_unlock_irqrestore(&ide_lock, flags); | |
868 | (void) ide_do_reset(drive); | |
869 | ||
870 | return 0; | |
1da177e4 LT |
871 | case HDIO_GET_BUSSTATE: |
872 | if (!capable(CAP_SYS_ADMIN)) | |
873 | return -EACCES; | |
874 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
875 | return -EFAULT; | |
876 | return 0; | |
877 | ||
878 | case HDIO_SET_BUSSTATE: | |
879 | if (!capable(CAP_SYS_ADMIN)) | |
880 | return -EACCES; | |
1da177e4 LT |
881 | return -EOPNOTSUPP; |
882 | default: | |
883 | return -EINVAL; | |
884 | } | |
1497943e BZ |
885 | |
886 | read_val: | |
f9383c42 | 887 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
888 | spin_lock_irqsave(&ide_lock, flags); |
889 | err = *val; | |
890 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 891 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
892 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
893 | ||
894 | set_val: | |
895 | if (bdev != bdev->bd_contains) | |
896 | err = -EINVAL; | |
897 | else { | |
898 | if (!capable(CAP_SYS_ADMIN)) | |
899 | err = -EACCES; | |
900 | else { | |
f9383c42 | 901 | mutex_lock(&ide_setting_mtx); |
1497943e | 902 | err = setfunc(drive, arg); |
f9383c42 | 903 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
904 | } |
905 | } | |
906 | return err; | |
1da177e4 LT |
907 | } |
908 | ||
909 | EXPORT_SYMBOL(generic_ide_ioctl); | |
910 | ||
911 | /* | |
912 | * stridx() returns the offset of c within s, | |
913 | * or -1 if c is '\0' or not found within s. | |
914 | */ | |
915 | static int __init stridx (const char *s, char c) | |
916 | { | |
917 | char *i = strchr(s, c); | |
918 | return (i && c) ? i - s : -1; | |
919 | } | |
920 | ||
921 | /* | |
922 | * match_parm() does parsing for ide_setup(): | |
923 | * | |
924 | * 1. the first char of s must be '='. | |
925 | * 2. if the remainder matches one of the supplied keywords, | |
926 | * the index (1 based) of the keyword is negated and returned. | |
927 | * 3. if the remainder is a series of no more than max_vals numbers | |
928 | * separated by commas, the numbers are saved in vals[] and a | |
929 | * count of how many were saved is returned. Base10 is assumed, | |
930 | * and base16 is allowed when prefixed with "0x". | |
931 | * 4. otherwise, zero is returned. | |
932 | */ | |
933 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
934 | { | |
935 | static const char *decimal = "0123456789"; | |
936 | static const char *hex = "0123456789abcdef"; | |
937 | int i, n; | |
938 | ||
939 | if (*s++ == '=') { | |
940 | /* | |
941 | * Try matching against the supplied keywords, | |
942 | * and return -(index+1) if we match one | |
943 | */ | |
944 | if (keywords != NULL) { | |
945 | for (i = 0; *keywords != NULL; ++i) { | |
946 | if (!strcmp(s, *keywords++)) | |
947 | return -(i+1); | |
948 | } | |
949 | } | |
950 | /* | |
951 | * Look for a series of no more than "max_vals" | |
952 | * numeric values separated by commas, in base10, | |
953 | * or base16 when prefixed with "0x". | |
954 | * Return a count of how many were found. | |
955 | */ | |
956 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
957 | vals[n] = i; | |
958 | while ((i = stridx(decimal, *++s)) >= 0) | |
959 | vals[n] = (vals[n] * 10) + i; | |
960 | if (*s == 'x' && !vals[n]) { | |
961 | while ((i = stridx(hex, *++s)) >= 0) | |
962 | vals[n] = (vals[n] * 0x10) + i; | |
963 | } | |
964 | if (++n == max_vals) | |
965 | break; | |
966 | if (*s == ',' || *s == ';') | |
967 | ++s; | |
968 | } | |
969 | if (!*s) | |
970 | return n; | |
971 | } | |
972 | return 0; /* zero = nothing matched */ | |
973 | } | |
974 | ||
84913882 | 975 | extern int probe_ali14xx; |
84913882 | 976 | extern int probe_umc8672; |
84913882 | 977 | extern int probe_dtc2278; |
84913882 | 978 | extern int probe_ht6560b; |
84913882 | 979 | extern int probe_qd65xx; |
ade2daf9 | 980 | extern int cmd640_vlb; |
1da177e4 | 981 | |
9a0e77f2 | 982 | static int __initdata is_chipset_set; |
1da177e4 LT |
983 | |
984 | /* | |
985 | * ide_setup() gets called VERY EARLY during initialization, | |
986 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
987 | * | |
1c10e938 | 988 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
989 | */ |
990 | static int __init ide_setup(char *s) | |
991 | { | |
992 | int i, vals[3]; | |
993 | ide_hwif_t *hwif; | |
994 | ide_drive_t *drive; | |
995 | unsigned int hw, unit; | |
996 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
997 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
998 | ||
999 | ||
1000 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1001 | return 0; /* driver and not us */ | |
1002 | ||
1003 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1004 | return 0; | |
1005 | ||
1006 | printk(KERN_INFO "ide_setup: %s", s); | |
1007 | init_ide_data (); | |
1008 | ||
1009 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1010 | if (!strcmp(s, "ide=doubler")) { | |
1011 | extern int ide_doubler; | |
1012 | ||
1013 | printk(" : Enabled support for IDE doublers\n"); | |
1014 | ide_doubler = 1; | |
1015 | return 1; | |
1016 | } | |
1017 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1018 | ||
1019 | if (!strcmp(s, "ide=nodma")) { | |
1020 | printk(" : Prevented DMA\n"); | |
1021 | noautodma = 1; | |
c223701c | 1022 | goto obsolete_option; |
1da177e4 LT |
1023 | } |
1024 | ||
e3a59b4d HR |
1025 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1026 | if (!strcmp(s, "ide=noacpi")) { | |
1027 | //printk(" : Disable IDE ACPI support.\n"); | |
1028 | ide_noacpi = 1; | |
1029 | return 1; | |
1030 | } | |
1031 | if (!strcmp(s, "ide=acpigtf")) { | |
1032 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1033 | ide_noacpitfs = 0; | |
1034 | return 1; | |
1035 | } | |
1036 | if (!strcmp(s, "ide=acpionboot")) { | |
1037 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1038 | ide_noacpionboot = 0; | |
1039 | return 1; | |
1040 | } | |
1041 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1042 | ||
1da177e4 LT |
1043 | /* |
1044 | * Look for drive options: "hdx=" | |
1045 | */ | |
1046 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1047 | const char *hd_words[] = { | |
c223701c | 1048 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 1049 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 1050 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1051 | unit = s[2] - 'a'; |
1052 | hw = unit / MAX_DRIVES; | |
1053 | unit = unit % MAX_DRIVES; | |
1054 | hwif = &ide_hwifs[hw]; | |
1055 | drive = &hwif->drives[unit]; | |
1056 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1057 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 1058 | goto obsolete_option; |
1da177e4 LT |
1059 | } |
1060 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1061 | case -1: /* "none" */ | |
1062 | case -2: /* "noprobe" */ | |
1063 | drive->noprobe = 1; | |
1064 | goto done; | |
1065 | case -3: /* "nowerr" */ | |
1066 | drive->bad_wstat = BAD_R_STAT; | |
1067 | hwif->noprobe = 0; | |
1068 | goto done; | |
1069 | case -4: /* "cdrom" */ | |
1070 | drive->present = 1; | |
1071 | drive->media = ide_cdrom; | |
1072 | /* an ATAPI device ignores DRDY */ | |
1073 | drive->ready_stat = 0; | |
1074 | hwif->noprobe = 0; | |
1075 | goto done; | |
c223701c BZ |
1076 | case -5: /* nodma */ |
1077 | drive->nodma = 1; | |
1078 | goto done; | |
1da177e4 LT |
1079 | case -6: /* "autotune" */ |
1080 | drive->autotune = IDE_TUNE_AUTO; | |
1081 | goto obsolete_option; | |
1082 | case -7: /* "noautotune" */ | |
1083 | drive->autotune = IDE_TUNE_NOAUTO; | |
1084 | goto obsolete_option; | |
36193484 JA |
1085 | case -11: /* noflush */ |
1086 | drive->noflush = 1; | |
1087 | goto done; | |
1da177e4 LT |
1088 | case -12: /* "remap" */ |
1089 | drive->remap_0_to_1 = 1; | |
d708c40d | 1090 | goto obsolete_option; |
1da177e4 LT |
1091 | case -13: /* "remap63" */ |
1092 | drive->sect0 = 63; | |
d708c40d | 1093 | goto obsolete_option; |
1da177e4 LT |
1094 | case -14: /* "scsi" */ |
1095 | drive->scsi = 1; | |
15220d9b | 1096 | goto obsolete_option; |
1da177e4 LT |
1097 | case 3: /* cyl,head,sect */ |
1098 | drive->media = ide_disk; | |
1099 | drive->ready_stat = READY_STAT; | |
1100 | drive->cyl = drive->bios_cyl = vals[0]; | |
1101 | drive->head = drive->bios_head = vals[1]; | |
1102 | drive->sect = drive->bios_sect = vals[2]; | |
1103 | drive->present = 1; | |
1104 | drive->forced_geom = 1; | |
1105 | hwif->noprobe = 0; | |
1106 | goto done; | |
1107 | default: | |
1108 | goto bad_option; | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1113 | goto bad_option; | |
1114 | /* | |
1115 | * Look for bus speed option: "idebus=" | |
1116 | */ | |
1117 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1118 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1119 | goto bad_option; | |
1120 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1121 | idebus_parameter = vals[0]; | |
1122 | } else | |
1123 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1124 | goto done; | |
1125 | } | |
1126 | /* | |
1127 | * Look for interface options: "idex=" | |
1128 | */ | |
1129 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1130 | /* | |
1131 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1132 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1133 | */ | |
1134 | static const char *ide_words[] = { | |
b6209a90 | 1135 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1136 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1137 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1138 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 | 1139 | |
1da177e4 LT |
1140 | hw = s[3] - '0'; |
1141 | hwif = &ide_hwifs[hw]; | |
1142 | i = match_parm(&s[4], ide_words, vals, 3); | |
1143 | ||
1144 | /* | |
1145 | * Cryptic check to ensure chipset not already set for hwif. | |
1146 | * Note: we can't depend on hwif->chipset here. | |
1147 | */ | |
9a0e77f2 | 1148 | if (i >= -18 && i <= -11) { |
1da177e4 | 1149 | /* chipset already specified */ |
9a0e77f2 | 1150 | if (is_chipset_set) |
1da177e4 | 1151 | goto bad_option; |
9a0e77f2 BZ |
1152 | /* these drivers are for "ide0=" only */ |
1153 | if (hw != 0) | |
1154 | goto bad_hwif; | |
1155 | is_chipset_set = 1; | |
1da177e4 LT |
1156 | printk("\n"); |
1157 | } | |
1158 | ||
1159 | switch (i) { | |
1160 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1161 | case -17: /* "ali14xx" */ | |
1162 | probe_ali14xx = 1; | |
9c027c68 | 1163 | goto obsolete_option; |
1da177e4 LT |
1164 | #endif |
1165 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1166 | case -16: /* "umc8672" */ | |
1167 | probe_umc8672 = 1; | |
9c027c68 | 1168 | goto obsolete_option; |
1da177e4 LT |
1169 | #endif |
1170 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1171 | case -15: /* "dtc2278" */ | |
1172 | probe_dtc2278 = 1; | |
9c027c68 | 1173 | goto obsolete_option; |
1da177e4 LT |
1174 | #endif |
1175 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1176 | case -14: /* "cmd640_vlb" */ | |
1da177e4 | 1177 | cmd640_vlb = 1; |
9c027c68 | 1178 | goto obsolete_option; |
1da177e4 LT |
1179 | #endif |
1180 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1181 | case -13: /* "ht6560b" */ | |
1182 | probe_ht6560b = 1; | |
9c027c68 | 1183 | goto obsolete_option; |
1da177e4 LT |
1184 | #endif |
1185 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1186 | case -12: /* "qd65xx" */ | |
1187 | probe_qd65xx = 1; | |
9c027c68 | 1188 | goto obsolete_option; |
1da177e4 LT |
1189 | #endif |
1190 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1191 | case -11: /* "four" drives on one set of ports */ | |
1192 | { | |
1193 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1194 | mate->drives[0].select.all ^= 0x20; | |
1195 | mate->drives[1].select.all ^= 0x20; | |
1196 | hwif->chipset = mate->chipset = ide_4drives; | |
1197 | mate->irq = hwif->irq; | |
1198 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1199 | hwif->mate = mate; |
1200 | mate->mate = hwif; | |
1201 | hwif->serialized = mate->serialized = 1; | |
1202 | goto obsolete_option; | |
1da177e4 LT |
1203 | } |
1204 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1205 | case -10: /* minus10 */ | |
1206 | case -9: /* minus9 */ | |
1207 | case -8: /* minus8 */ | |
1b516940 | 1208 | case -6: |
b6209a90 BZ |
1209 | case -4: |
1210 | case -3: | |
1da177e4 LT |
1211 | goto bad_option; |
1212 | case -7: /* ata66 */ | |
1213 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1214 | /* |
1215 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1216 | * cable detection is also overriden. | |
1217 | */ | |
1218 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1219 | goto obsolete_option; |
1220 | #else | |
1221 | goto bad_hwif; | |
1222 | #endif | |
1da177e4 LT |
1223 | case -5: /* "reset" */ |
1224 | hwif->reset = 1; | |
1225 | goto obsolete_option; | |
1da177e4 | 1226 | case -2: /* "serialize" */ |
1da177e4 LT |
1227 | hwif->mate = &ide_hwifs[hw^1]; |
1228 | hwif->mate->mate = hwif; | |
1229 | hwif->serialized = hwif->mate->serialized = 1; | |
1230 | goto obsolete_option; | |
1231 | ||
1232 | case -1: /* "noprobe" */ | |
1233 | hwif->noprobe = 1; | |
c53ea18d | 1234 | goto obsolete_option; |
9a0e77f2 BZ |
1235 | case 0: |
1236 | case 1: | |
1237 | case 2: | |
1238 | case 3: | |
1239 | goto bad_option; | |
1da177e4 LT |
1240 | default: |
1241 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1242 | return 1; | |
1243 | } | |
1244 | } | |
1245 | bad_option: | |
1246 | printk(" -- BAD OPTION\n"); | |
1247 | return 1; | |
1248 | obsolete_option: | |
1249 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1250 | return 1; | |
1251 | bad_hwif: | |
1252 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1253 | done: | |
1254 | printk("\n"); | |
1255 | return 1; | |
1256 | } | |
1257 | ||
1da177e4 LT |
1258 | EXPORT_SYMBOL(ide_lock); |
1259 | ||
8604affd BZ |
1260 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1261 | { | |
1262 | return 1; | |
1263 | } | |
1264 | ||
263756ec KS |
1265 | static char *media_string(ide_drive_t *drive) |
1266 | { | |
1267 | switch (drive->media) { | |
1268 | case ide_disk: | |
1269 | return "disk"; | |
1270 | case ide_cdrom: | |
1271 | return "cdrom"; | |
1272 | case ide_tape: | |
1273 | return "tape"; | |
1274 | case ide_floppy: | |
1275 | return "floppy"; | |
a7a832de DK |
1276 | case ide_optical: |
1277 | return "optical"; | |
263756ec KS |
1278 | default: |
1279 | return "UNKNOWN"; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1284 | { | |
1285 | ide_drive_t *drive = to_ide_device(dev); | |
1286 | return sprintf(buf, "%s\n", media_string(drive)); | |
1287 | } | |
1288 | ||
1289 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1290 | { | |
1291 | ide_drive_t *drive = to_ide_device(dev); | |
1292 | return sprintf(buf, "%s\n", drive->name); | |
1293 | } | |
1294 | ||
1295 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1296 | { | |
1297 | ide_drive_t *drive = to_ide_device(dev); | |
1298 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1299 | } | |
1300 | ||
e11b9035 BZ |
1301 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1302 | char *buf) | |
1303 | { | |
1304 | ide_drive_t *drive = to_ide_device(dev); | |
1305 | return sprintf(buf, "%s\n", drive->id->model); | |
1306 | } | |
1307 | ||
1308 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1309 | char *buf) | |
1310 | { | |
1311 | ide_drive_t *drive = to_ide_device(dev); | |
1312 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1313 | } | |
1314 | ||
1315 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1316 | char *buf) | |
1317 | { | |
1318 | ide_drive_t *drive = to_ide_device(dev); | |
1319 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1320 | } | |
1321 | ||
263756ec KS |
1322 | static struct device_attribute ide_dev_attrs[] = { |
1323 | __ATTR_RO(media), | |
1324 | __ATTR_RO(drivename), | |
1325 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1326 | __ATTR_RO(model), |
1327 | __ATTR_RO(firmware), | |
1328 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1329 | __ATTR_NULL |
1330 | }; | |
1331 | ||
7eff2e7a | 1332 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1333 | { |
1334 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1335 | |
1336 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1337 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1338 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1339 | return 0; |
1340 | } | |
1341 | ||
4031bbe4 RK |
1342 | static int generic_ide_probe(struct device *dev) |
1343 | { | |
1344 | ide_drive_t *drive = to_ide_device(dev); | |
1345 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1346 | ||
1347 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1348 | } | |
1349 | ||
1350 | static int generic_ide_remove(struct device *dev) | |
1351 | { | |
1352 | ide_drive_t *drive = to_ide_device(dev); | |
1353 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1354 | ||
1355 | if (drv->remove) | |
1356 | drv->remove(drive); | |
1357 | ||
1358 | return 0; | |
1359 | } | |
1360 | ||
1361 | static void generic_ide_shutdown(struct device *dev) | |
1362 | { | |
1363 | ide_drive_t *drive = to_ide_device(dev); | |
1364 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1365 | ||
1366 | if (dev->driver && drv->shutdown) | |
1367 | drv->shutdown(drive); | |
1368 | } | |
1369 | ||
1da177e4 LT |
1370 | struct bus_type ide_bus_type = { |
1371 | .name = "ide", | |
8604affd | 1372 | .match = ide_bus_match, |
263756ec | 1373 | .uevent = ide_uevent, |
4031bbe4 RK |
1374 | .probe = generic_ide_probe, |
1375 | .remove = generic_ide_remove, | |
1376 | .shutdown = generic_ide_shutdown, | |
263756ec | 1377 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1378 | .suspend = generic_ide_suspend, |
1379 | .resume = generic_ide_resume, | |
1380 | }; | |
1381 | ||
8604affd BZ |
1382 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1383 | ||
f74c9141 BZ |
1384 | static void ide_port_class_release(struct device *portdev) |
1385 | { | |
1386 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1387 | ||
1388 | put_device(&hwif->gendev); | |
1389 | } | |
1390 | ||
1da177e4 LT |
1391 | /* |
1392 | * This is gets invoked once during initialization, to set *everything* up | |
1393 | */ | |
1394 | static int __init ide_init(void) | |
1395 | { | |
349ae23f RD |
1396 | int ret; |
1397 | ||
eba8ff94 | 1398 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1399 | system_bus_speed = ide_system_bus_speed(); |
1400 | ||
537f06c5 BZ |
1401 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1402 | "for PIO modes%s\n", system_bus_speed, | |
1403 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1404 | ||
349ae23f RD |
1405 | ret = bus_register(&ide_bus_type); |
1406 | if (ret < 0) { | |
1407 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1408 | return ret; | |
1409 | } | |
1da177e4 | 1410 | |
f74c9141 BZ |
1411 | ide_port_class = class_create(THIS_MODULE, "ide_port"); |
1412 | if (IS_ERR(ide_port_class)) { | |
1413 | ret = PTR_ERR(ide_port_class); | |
1414 | goto out_port_class; | |
1415 | } | |
1416 | ide_port_class->dev_release = ide_port_class_release; | |
1417 | ||
1da177e4 LT |
1418 | init_ide_data(); |
1419 | ||
5cbf79cd | 1420 | proc_ide_create(); |
1da177e4 | 1421 | |
1da177e4 | 1422 | return 0; |
f74c9141 BZ |
1423 | |
1424 | out_port_class: | |
1425 | bus_unregister(&ide_bus_type); | |
1426 | ||
1427 | return ret; | |
1da177e4 LT |
1428 | } |
1429 | ||
1430 | #ifdef MODULE | |
1431 | static char *options = NULL; | |
1432 | module_param(options, charp, 0); | |
1433 | MODULE_LICENSE("GPL"); | |
1434 | ||
1435 | static void __init parse_options (char *line) | |
1436 | { | |
1437 | char *next = line; | |
1438 | ||
1439 | if (line == NULL || !*line) | |
1440 | return; | |
1441 | while ((line = next) != NULL) { | |
1442 | if ((next = strchr(line,' ')) != NULL) | |
1443 | *next++ = 0; | |
1444 | if (!ide_setup(line)) | |
1445 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1446 | } | |
1447 | } | |
1448 | ||
fbd8ad30 | 1449 | int __init init_module (void) |
1da177e4 LT |
1450 | { |
1451 | parse_options(options); | |
1452 | return ide_init(); | |
1453 | } | |
1454 | ||
eb797227 | 1455 | void __exit cleanup_module (void) |
1da177e4 LT |
1456 | { |
1457 | int index; | |
1458 | ||
1459 | for (index = 0; index < MAX_HWIFS; ++index) | |
93de00fd | 1460 | ide_unregister(index); |
1da177e4 | 1461 | |
1da177e4 | 1462 | proc_ide_destroy(); |
1da177e4 | 1463 | |
f74c9141 BZ |
1464 | class_destroy(ide_port_class); |
1465 | ||
1da177e4 LT |
1466 | bus_unregister(&ide_bus_type); |
1467 | } | |
1468 | ||
1469 | #else /* !MODULE */ | |
1470 | ||
1471 | __setup("", ide_setup); | |
1472 | ||
1473 | module_init(ide_init); | |
1474 | ||
1475 | #endif /* MODULE */ |