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Commit | Line | Data |
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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 | ||
81 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, | |
82 | IDE2_MAJOR, IDE3_MAJOR, | |
83 | IDE4_MAJOR, IDE5_MAJOR, | |
84 | IDE6_MAJOR, IDE7_MAJOR, | |
85 | IDE8_MAJOR, IDE9_MAJOR }; | |
86 | ||
87 | static int idebus_parameter; /* holds the "idebus=" parameter */ | |
88 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ | |
1da177e4 | 89 | |
ef29888e | 90 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 LT |
91 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
92 | ||
1da177e4 | 93 | int noautodma = 0; |
1da177e4 | 94 | |
e3a59b4d HR |
95 | #ifdef CONFIG_BLK_DEV_IDEACPI |
96 | int ide_noacpi = 0; | |
97 | int ide_noacpitfs = 1; | |
98 | int ide_noacpionboot = 1; | |
99 | #endif | |
100 | ||
1da177e4 LT |
101 | /* |
102 | * This is declared extern in ide.h, for access by other IDE modules: | |
103 | */ | |
104 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ | |
105 | ||
106 | EXPORT_SYMBOL(ide_hwifs); | |
107 | ||
1da177e4 LT |
108 | /* |
109 | * Do not even *think* about calling this! | |
110 | */ | |
cbb010c1 | 111 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 LT |
112 | { |
113 | unsigned int unit; | |
114 | ||
115 | /* bulk initialize hwif & drive info with zeros */ | |
116 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
117 | ||
118 | /* fill in any non-zero initial values */ | |
119 | hwif->index = index; | |
120 | hwif->major = ide_hwif_to_major[index]; | |
121 | ||
122 | hwif->name[0] = 'i'; | |
123 | hwif->name[1] = 'd'; | |
124 | hwif->name[2] = 'e'; | |
125 | hwif->name[3] = '0' + index; | |
126 | ||
127 | hwif->bus_state = BUSSTATE_ON; | |
128 | ||
f36d4024 | 129 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
130 | |
131 | default_hwif_iops(hwif); | |
132 | default_hwif_transport(hwif); | |
133 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
134 | ide_drive_t *drive = &hwif->drives[unit]; | |
135 | ||
136 | drive->media = ide_disk; | |
137 | drive->select.all = (unit<<4)|0xa0; | |
138 | drive->hwif = hwif; | |
139 | drive->ctl = 0x08; | |
140 | drive->ready_stat = READY_STAT; | |
141 | drive->bad_wstat = BAD_W_STAT; | |
142 | drive->special.b.recalibrate = 1; | |
143 | drive->special.b.set_geometry = 1; | |
144 | drive->name[0] = 'h'; | |
145 | drive->name[1] = 'd'; | |
146 | drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; | |
147 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; | |
148 | drive->using_dma = 0; | |
1da177e4 LT |
149 | drive->vdma = 0; |
150 | INIT_LIST_HEAD(&drive->list); | |
f36d4024 | 151 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
152 | } |
153 | } | |
cbb010c1 | 154 | EXPORT_SYMBOL_GPL(ide_init_port_data); |
1da177e4 LT |
155 | |
156 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
157 | { | |
158 | hw_regs_t hw; | |
159 | ||
160 | memset(&hw, 0, sizeof(hw_regs_t)); | |
161 | ||
162 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
163 | ||
1da177e4 LT |
164 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
165 | ||
166 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; | |
167 | #ifdef CONFIG_BLK_DEV_HD | |
168 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) | |
169 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ | |
170 | #endif | |
171 | } | |
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 | { | |
193 | ide_hwif_t *hwif; | |
194 | unsigned int index; | |
195 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
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) { | |
203 | hwif = &ide_hwifs[index]; | |
cbb010c1 | 204 | ide_init_port_data(hwif, index); |
1da177e4 LT |
205 | init_hwif_default(hwif, index); |
206 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
9239b333 | 207 | hwif->irq = |
1da177e4 LT |
208 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
209 | #endif | |
210 | } | |
1da177e4 LT |
211 | } |
212 | ||
213 | /** | |
214 | * ide_system_bus_speed - guess bus speed | |
215 | * | |
216 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
217 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
218 | * The default is 40 for known PCI systems, 50 otherwise. | |
219 | * The "idebus=xx" parameter can be used to override this value. | |
220 | * The actual value to be used is computed/displayed the first time | |
221 | * through. Drivers should only use this as a last resort. | |
222 | * | |
223 | * Returns a guessed speed in MHz. | |
224 | */ | |
225 | ||
226 | static int ide_system_bus_speed(void) | |
227 | { | |
228 | #ifdef CONFIG_PCI | |
229 | static struct pci_device_id pci_default[] = { | |
230 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
231 | { } | |
232 | }; | |
233 | #else | |
234 | #define pci_default 0 | |
235 | #endif /* CONFIG_PCI */ | |
236 | ||
537f06c5 BZ |
237 | /* user supplied value */ |
238 | if (idebus_parameter) | |
239 | return idebus_parameter; | |
240 | ||
241 | /* safe default value for PCI or VESA and PCI*/ | |
242 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
243 | } |
244 | ||
baa8f3e9 BZ |
245 | ide_hwif_t * ide_find_port(unsigned long base) |
246 | { | |
247 | ide_hwif_t *hwif; | |
248 | int i; | |
249 | ||
250 | for (i = 0; i < MAX_HWIFS; i++) { | |
251 | hwif = &ide_hwifs[i]; | |
252 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
253 | goto found; | |
254 | } | |
255 | ||
256 | for (i = 0; i < MAX_HWIFS; i++) { | |
257 | hwif = &ide_hwifs[i]; | |
2625cd52 | 258 | if (hwif->chipset == ide_unknown) |
baa8f3e9 BZ |
259 | goto found; |
260 | } | |
261 | ||
262 | hwif = NULL; | |
263 | found: | |
264 | return hwif; | |
265 | } | |
266 | ||
267 | EXPORT_SYMBOL_GPL(ide_find_port); | |
268 | ||
1da177e4 LT |
269 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
270 | unsigned long addr, int num) | |
271 | { | |
272 | struct resource *res = request_region(addr, num, hwif->name); | |
273 | ||
274 | if (!res) | |
275 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
276 | hwif->name, addr, addr+num-1); | |
277 | return res; | |
278 | } | |
279 | ||
280 | /** | |
281 | * ide_hwif_request_regions - request resources for IDE | |
282 | * @hwif: interface to use | |
283 | * | |
284 | * Requests all the needed resources for an interface. | |
285 | * Right now core IDE code does this work which is deeply wrong. | |
286 | * MMIO leaves it to the controller driver, | |
287 | * PIO will migrate this way over time. | |
288 | */ | |
289 | ||
290 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
291 | { | |
292 | unsigned long addr; | |
293 | unsigned int i; | |
294 | ||
2ad1e558 | 295 | if (hwif->mmio) |
1da177e4 | 296 | return 0; |
1da177e4 LT |
297 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
298 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
299 | goto control_region_busy; | |
300 | hwif->straight8 = 0; | |
301 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
302 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
303 | if (!hwif_request_region(hwif, addr, 8)) | |
304 | goto data_region_busy; | |
305 | hwif->straight8 = 1; | |
306 | return 0; | |
307 | } | |
308 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
309 | addr = hwif->io_ports[i]; | |
310 | if (!hwif_request_region(hwif, addr, 1)) { | |
311 | while (--i) | |
312 | release_region(addr, 1); | |
313 | goto data_region_busy; | |
314 | } | |
315 | } | |
316 | return 0; | |
317 | ||
318 | data_region_busy: | |
319 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
320 | if (addr) | |
321 | release_region(addr, 1); | |
322 | control_region_busy: | |
323 | /* If any errors are return, we drop the hwif interface. */ | |
324 | return -EBUSY; | |
325 | } | |
326 | ||
327 | /** | |
328 | * ide_hwif_release_regions - free IDE resources | |
329 | * | |
330 | * Note that we only release the standard ports, | |
331 | * and do not even try to handle any extra ports | |
332 | * allocated for weird IDE interface chipsets. | |
333 | * | |
334 | * Note also that we don't yet handle mmio resources here. More | |
335 | * importantly our caller should be doing this so we need to | |
336 | * restructure this as a helper function for drivers. | |
337 | */ | |
338 | ||
339 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
340 | { | |
341 | u32 i = 0; | |
342 | ||
2ad1e558 | 343 | if (hwif->mmio) |
1da177e4 LT |
344 | return; |
345 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
346 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
347 | if (hwif->straight8) { | |
348 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
349 | return; | |
350 | } | |
351 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
352 | if (hwif->io_ports[i]) | |
353 | release_region(hwif->io_ports[i], 1); | |
354 | } | |
355 | ||
356 | /** | |
357 | * ide_hwif_restore - restore hwif to template | |
358 | * @hwif: hwif to update | |
359 | * @tmp_hwif: template | |
360 | * | |
020e322d | 361 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
362 | * from the template. |
363 | */ | |
364 | ||
365 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
366 | { | |
367 | hwif->hwgroup = tmp_hwif->hwgroup; | |
368 | ||
369 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
370 | ||
371 | hwif->proc = tmp_hwif->proc; | |
372 | ||
373 | hwif->major = tmp_hwif->major; | |
374 | hwif->straight8 = tmp_hwif->straight8; | |
375 | hwif->bus_state = tmp_hwif->bus_state; | |
376 | ||
6a824c92 BZ |
377 | hwif->host_flags = tmp_hwif->host_flags; |
378 | ||
4099d143 BZ |
379 | hwif->pio_mask = tmp_hwif->pio_mask; |
380 | ||
1da177e4 LT |
381 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
382 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
383 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
384 | ||
49521f97 BZ |
385 | hwif->cbl = tmp_hwif->cbl; |
386 | ||
1da177e4 LT |
387 | hwif->chipset = tmp_hwif->chipset; |
388 | hwif->hold = tmp_hwif->hold; | |
389 | ||
36501650 BZ |
390 | hwif->dev = tmp_hwif->dev; |
391 | ||
1da177e4 | 392 | #ifdef CONFIG_BLK_DEV_IDEPCI |
1da177e4 LT |
393 | hwif->cds = tmp_hwif->cds; |
394 | #endif | |
395 | ||
26bcb879 | 396 | hwif->set_pio_mode = tmp_hwif->set_pio_mode; |
88b2b32b | 397 | hwif->set_dma_mode = tmp_hwif->set_dma_mode; |
b4e44369 | 398 | hwif->mdma_filter = tmp_hwif->mdma_filter; |
2d5eaa6d | 399 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
400 | hwif->selectproc = tmp_hwif->selectproc; |
401 | hwif->reset_poll = tmp_hwif->reset_poll; | |
402 | hwif->pre_reset = tmp_hwif->pre_reset; | |
403 | hwif->resetproc = tmp_hwif->resetproc; | |
1da177e4 LT |
404 | hwif->maskproc = tmp_hwif->maskproc; |
405 | hwif->quirkproc = tmp_hwif->quirkproc; | |
406 | hwif->busproc = tmp_hwif->busproc; | |
407 | ||
408 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
409 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
410 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
411 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
412 | ||
15ce926a | 413 | hwif->dma_host_set = tmp_hwif->dma_host_set; |
1da177e4 LT |
414 | hwif->dma_setup = tmp_hwif->dma_setup; |
415 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
416 | hwif->dma_start = tmp_hwif->dma_start; | |
417 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
1da177e4 | 418 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 419 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
841d2a9b | 420 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 421 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
422 | |
423 | hwif->OUTB = tmp_hwif->OUTB; | |
424 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
425 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
426 | hwif->OUTSW = tmp_hwif->OUTSW; |
427 | hwif->OUTSL = tmp_hwif->OUTSL; | |
428 | ||
429 | hwif->INB = tmp_hwif->INB; | |
430 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
431 | hwif->INSW = tmp_hwif->INSW; |
432 | hwif->INSL = tmp_hwif->INSL; | |
433 | ||
434 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
435 | ||
436 | hwif->mmio = tmp_hwif->mmio; | |
437 | hwif->rqsize = tmp_hwif->rqsize; | |
1da177e4 LT |
438 | |
439 | #ifndef CONFIG_BLK_DEV_IDECS | |
440 | hwif->irq = tmp_hwif->irq; | |
441 | #endif | |
442 | ||
443 | hwif->dma_base = tmp_hwif->dma_base; | |
1da177e4 LT |
444 | hwif->dma_command = tmp_hwif->dma_command; |
445 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
446 | hwif->dma_status = tmp_hwif->dma_status; | |
447 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
448 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
449 | ||
1da177e4 LT |
450 | hwif->config_data = tmp_hwif->config_data; |
451 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
452 | hwif->extra_base = tmp_hwif->extra_base; |
453 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
454 | |
455 | hwif->hwif_data = tmp_hwif->hwif_data; | |
456 | } | |
457 | ||
fbd13088 | 458 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
459 | { |
460 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
461 | ||
462 | spin_lock_irq(&ide_lock); | |
463 | /* | |
464 | * Remove us from the hwgroup, and free | |
465 | * the hwgroup if we were the only member | |
466 | */ | |
467 | if (hwif->next == hwif) { | |
468 | BUG_ON(hwgroup->hwif != hwif); | |
469 | kfree(hwgroup); | |
470 | } else { | |
471 | /* There is another interface in hwgroup. | |
472 | * Unlink us, and set hwgroup->drive and ->hwif to | |
473 | * something sane. | |
474 | */ | |
475 | ide_hwif_t *g = hwgroup->hwif; | |
476 | ||
477 | while (g->next != hwif) | |
478 | g = g->next; | |
479 | g->next = hwif->next; | |
480 | if (hwgroup->hwif == hwif) { | |
481 | /* Chose a random hwif for hwgroup->hwif. | |
482 | * It's guaranteed that there are no drives | |
483 | * left in the hwgroup. | |
484 | */ | |
485 | BUG_ON(hwgroup->drive != NULL); | |
486 | hwgroup->hwif = g; | |
487 | } | |
488 | BUG_ON(hwgroup->hwif == hwif); | |
489 | } | |
490 | spin_unlock_irq(&ide_lock); | |
491 | } | |
492 | ||
71bf9f6f BZ |
493 | /* Called with ide_lock held. */ |
494 | static void ide_port_unregister_devices(ide_hwif_t *hwif) | |
495 | { | |
496 | int i; | |
497 | ||
498 | for (i = 0; i < MAX_DRIVES; i++) { | |
499 | ide_drive_t *drive = &hwif->drives[i]; | |
500 | ||
501 | if (drive->present) { | |
502 | spin_unlock_irq(&ide_lock); | |
503 | device_unregister(&drive->gendev); | |
504 | wait_for_completion(&drive->gendev_rel_comp); | |
505 | spin_lock_irq(&ide_lock); | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
1da177e4 | 510 | /** |
020e322d | 511 | * ide_unregister - free an IDE interface |
1da177e4 | 512 | * @index: index of interface (will change soon to a pointer) |
f82c2b17 BZ |
513 | * @init_default: init default hwif flag |
514 | * @restore: restore hwif flag | |
1da177e4 LT |
515 | * |
516 | * Perform the final unregister of an IDE interface. At the moment | |
517 | * we don't refcount interfaces so this will also get split up. | |
518 | * | |
519 | * Locking: | |
520 | * The caller must not hold the IDE locks | |
521 | * The drive present/vanishing is not yet properly locked | |
522 | * Take care with the callbacks. These have been split to avoid | |
523 | * deadlocking the IDE layer. The shutdown callback is called | |
524 | * before we take the lock and free resources. It is up to the | |
525 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
526 | * the interface will not be reopened (present/vanishing locking |
527 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
528 | * call the cleanup callback with the ide locks held. |
529 | * | |
530 | * Unregister restores the hwif structures to the default state. | |
531 | * This is raving bonkers. | |
532 | */ | |
533 | ||
f82c2b17 | 534 | void ide_unregister(unsigned int index, int init_default, int restore) |
1da177e4 | 535 | { |
1da177e4 | 536 | ide_hwif_t *hwif, *g; |
ef29888e | 537 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 538 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 539 | int irq_count = 0; |
1da177e4 LT |
540 | |
541 | BUG_ON(index >= MAX_HWIFS); | |
542 | ||
543 | BUG_ON(in_interrupt()); | |
544 | BUG_ON(irqs_disabled()); | |
ef29888e | 545 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
546 | spin_lock_irq(&ide_lock); |
547 | hwif = &ide_hwifs[index]; | |
548 | if (!hwif->present) | |
549 | goto abort; | |
71bf9f6f | 550 | ide_port_unregister_devices(hwif); |
1da177e4 LT |
551 | hwif->present = 0; |
552 | ||
553 | spin_unlock_irq(&ide_lock); | |
554 | ||
5cbf79cd | 555 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
556 | |
557 | hwgroup = hwif->hwgroup; | |
558 | /* | |
559 | * free the irq if we were the only hwif using it | |
560 | */ | |
561 | g = hwgroup->hwif; | |
562 | do { | |
563 | if (g->irq == hwif->irq) | |
564 | ++irq_count; | |
565 | g = g->next; | |
566 | } while (g != hwgroup->hwif); | |
567 | if (irq_count == 1) | |
568 | free_irq(hwif->irq, hwgroup); | |
569 | ||
96e5ad30 | 570 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 571 | |
1da177e4 | 572 | device_unregister(&hwif->gendev); |
f36d4024 | 573 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
574 | |
575 | /* | |
576 | * Remove us from the kernel's knowledge | |
577 | */ | |
578 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
579 | kfree(hwif->sg_table); | |
580 | unregister_blkdev(hwif->major, hwif->name); | |
581 | spin_lock_irq(&ide_lock); | |
582 | ||
583 | if (hwif->dma_base) { | |
584 | (void) ide_release_dma(hwif); | |
585 | ||
586 | hwif->dma_base = 0; | |
1da177e4 LT |
587 | hwif->dma_command = 0; |
588 | hwif->dma_vendor1 = 0; | |
589 | hwif->dma_status = 0; | |
590 | hwif->dma_vendor3 = 0; | |
591 | hwif->dma_prdtable = 0; | |
020e322d SS |
592 | |
593 | hwif->extra_base = 0; | |
594 | hwif->extra_ports = 0; | |
1da177e4 LT |
595 | } |
596 | ||
7cba97f1 BZ |
597 | ide_hwif_release_regions(hwif); |
598 | ||
1da177e4 LT |
599 | /* copy original settings */ |
600 | tmp_hwif = *hwif; | |
601 | ||
602 | /* restore hwif data to pristine status */ | |
cbb010c1 | 603 | ide_init_port_data(hwif, index); |
1da177e4 | 604 | |
f82c2b17 BZ |
605 | if (init_default) |
606 | init_hwif_default(hwif, index); | |
607 | ||
608 | if (restore) | |
609 | ide_hwif_restore(hwif, &tmp_hwif); | |
1da177e4 LT |
610 | |
611 | abort: | |
612 | spin_unlock_irq(&ide_lock); | |
ef29888e | 613 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
614 | } |
615 | ||
616 | EXPORT_SYMBOL(ide_unregister); | |
617 | ||
57c802e8 BZ |
618 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
619 | { | |
620 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
621 | hwif->irq = hw->irq; | |
622 | hwif->noprobe = 0; | |
623 | hwif->chipset = hw->chipset; | |
624 | hwif->gendev.parent = hw->dev; | |
625 | hwif->ack_intr = hw->ack_intr; | |
626 | } | |
627 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
628 | ||
1da177e4 | 629 | /** |
fd9bb539 | 630 | * ide_register_hw - register IDE interface |
1da177e4 | 631 | * @hw: hardware registers |
f01393e4 | 632 | * @quirkproc: quirkproc function |
1da177e4 | 633 | * @hwifp: pointer to returned hwif |
1da177e4 LT |
634 | * |
635 | * Register an IDE interface, specifying exactly the registers etc. | |
1da177e4 LT |
636 | * |
637 | * Returns -1 on error. | |
638 | */ | |
639 | ||
f01393e4 | 640 | int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *), |
cbb010c1 | 641 | ide_hwif_t **hwifp) |
1da177e4 LT |
642 | { |
643 | int index, retry = 1; | |
644 | ide_hwif_t *hwif; | |
cbb010c1 | 645 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
795d74b5 | 646 | |
1da177e4 | 647 | do { |
4f0eee4d | 648 | hwif = ide_find_port(hw->io_ports[IDE_DATA_OFFSET]); |
9e016a71 BZ |
649 | if (hwif) |
650 | goto found; | |
1da177e4 | 651 | for (index = 0; index < MAX_HWIFS; index++) |
f82c2b17 | 652 | ide_unregister(index, 1, 1); |
1da177e4 LT |
653 | } while (retry--); |
654 | return -1; | |
655 | found: | |
0c6025d4 | 656 | index = hwif->index; |
1da177e4 | 657 | if (hwif->present) |
f82c2b17 | 658 | ide_unregister(index, 0, 1); |
ead741df | 659 | else if (!hwif->hold) |
cbb010c1 | 660 | ide_init_port_data(hwif, index); |
57c802e8 BZ |
661 | |
662 | ide_init_port_hw(hwif, hw); | |
f01393e4 | 663 | hwif->quirkproc = quirkproc; |
1da177e4 | 664 | |
cbb010c1 | 665 | idx[0] = index; |
8447d9d5 | 666 | |
c413b9b9 | 667 | ide_device_add(idx, NULL); |
1da177e4 LT |
668 | |
669 | if (hwifp) | |
670 | *hwifp = hwif; | |
671 | ||
cbb010c1 | 672 | return hwif->present ? index : -1; |
1da177e4 LT |
673 | } |
674 | ||
1da177e4 LT |
675 | EXPORT_SYMBOL(ide_register_hw); |
676 | ||
677 | /* | |
678 | * Locks for IDE setting functionality | |
679 | */ | |
680 | ||
f9383c42 | 681 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 682 | |
f9383c42 | 683 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 684 | |
1da177e4 LT |
685 | /** |
686 | * ide_spin_wait_hwgroup - wait for group | |
687 | * @drive: drive in the group | |
688 | * | |
689 | * Wait for an IDE device group to go non busy and then return | |
690 | * holding the ide_lock which guards the hwgroup->busy status | |
691 | * and right to use it. | |
692 | */ | |
693 | ||
694 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
695 | { | |
696 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
697 | unsigned long timeout = jiffies + (3 * HZ); | |
698 | ||
699 | spin_lock_irq(&ide_lock); | |
700 | ||
701 | while (hwgroup->busy) { | |
702 | unsigned long lflags; | |
703 | spin_unlock_irq(&ide_lock); | |
704 | local_irq_set(lflags); | |
705 | if (time_after(jiffies, timeout)) { | |
706 | local_irq_restore(lflags); | |
707 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
708 | return -EBUSY; | |
709 | } | |
710 | local_irq_restore(lflags); | |
711 | spin_lock_irq(&ide_lock); | |
712 | } | |
713 | return 0; | |
714 | } | |
715 | ||
716 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
717 | ||
7662d046 | 718 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 719 | { |
1497943e BZ |
720 | if (drive->no_io_32bit) |
721 | return -EPERM; | |
722 | ||
723 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
724 | return -EINVAL; | |
725 | ||
644a9d76 BZ |
726 | if (ide_spin_wait_hwgroup(drive)) |
727 | return -EBUSY; | |
728 | ||
1da177e4 | 729 | drive->io_32bit = arg; |
644a9d76 BZ |
730 | |
731 | spin_unlock_irq(&ide_lock); | |
732 | ||
1da177e4 LT |
733 | return 0; |
734 | } | |
735 | ||
1497943e BZ |
736 | static int set_ksettings(ide_drive_t *drive, int arg) |
737 | { | |
738 | if (arg < 0 || arg > 1) | |
739 | return -EINVAL; | |
740 | ||
741 | if (ide_spin_wait_hwgroup(drive)) | |
742 | return -EBUSY; | |
743 | drive->keep_settings = arg; | |
744 | spin_unlock_irq(&ide_lock); | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
7662d046 | 749 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
750 | { |
751 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
752 | ide_hwif_t *hwif = drive->hwif; |
753 | int err = -EPERM; | |
754 | ||
1497943e BZ |
755 | if (arg < 0 || arg > 1) |
756 | return -EINVAL; | |
757 | ||
1da177e4 | 758 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
759 | goto out; |
760 | ||
15ce926a | 761 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
762 | goto out; |
763 | ||
764 | err = -EBUSY; | |
765 | if (ide_spin_wait_hwgroup(drive)) | |
766 | goto out; | |
767 | /* | |
768 | * set ->busy flag, unlock and let it ride | |
769 | */ | |
770 | hwif->hwgroup->busy = 1; | |
771 | spin_unlock_irq(&ide_lock); | |
772 | ||
773 | err = 0; | |
774 | ||
1da177e4 | 775 | if (arg) { |
23b1bd45 | 776 | if (ide_set_dma(drive)) |
87996204 | 777 | err = -EIO; |
7469aaf6 BZ |
778 | } else |
779 | ide_dma_off(drive); | |
87996204 BZ |
780 | |
781 | /* | |
782 | * lock, clear ->busy flag and unlock before leaving | |
783 | */ | |
784 | spin_lock_irq(&ide_lock); | |
785 | hwif->hwgroup->busy = 0; | |
786 | spin_unlock_irq(&ide_lock); | |
787 | out: | |
788 | return err; | |
1da177e4 | 789 | #else |
1497943e BZ |
790 | if (arg < 0 || arg > 1) |
791 | return -EINVAL; | |
792 | ||
1da177e4 LT |
793 | return -EPERM; |
794 | #endif | |
795 | } | |
796 | ||
7662d046 | 797 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
798 | { |
799 | struct request rq; | |
800 | ||
1497943e BZ |
801 | if (arg < 0 || arg > 255) |
802 | return -EINVAL; | |
803 | ||
26bcb879 | 804 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 805 | return -ENOSYS; |
26bcb879 | 806 | |
1da177e4 LT |
807 | if (drive->special.b.set_tune) |
808 | return -EBUSY; | |
145b75e9 | 809 | |
1da177e4 | 810 | ide_init_drive_cmd(&rq); |
852738f3 | 811 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 812 | |
1da177e4 LT |
813 | drive->tune_req = (u8) arg; |
814 | drive->special.b.set_tune = 1; | |
815 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
816 | return 0; | |
817 | } | |
818 | ||
1497943e BZ |
819 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
820 | { | |
821 | if (drive->no_unmask) | |
822 | return -EPERM; | |
823 | ||
824 | if (arg < 0 || arg > 1) | |
825 | return -EINVAL; | |
826 | ||
827 | if (ide_spin_wait_hwgroup(drive)) | |
828 | return -EBUSY; | |
829 | drive->unmask = arg; | |
830 | spin_unlock_irq(&ide_lock); | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
1da177e4 LT |
835 | /** |
836 | * system_bus_clock - clock guess | |
837 | * | |
838 | * External version of the bus clock guess used by very old IDE drivers | |
839 | * for things like VLB timings. Should not be used. | |
840 | */ | |
841 | ||
842 | int system_bus_clock (void) | |
843 | { | |
537f06c5 | 844 | return system_bus_speed; |
1da177e4 LT |
845 | } |
846 | ||
847 | EXPORT_SYMBOL(system_bus_clock); | |
848 | ||
b887d2e6 | 849 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
850 | { |
851 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 852 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
853 | struct request rq; |
854 | struct request_pm_state rqpm; | |
855 | ide_task_t args; | |
5e32132b | 856 | int ret; |
1da177e4 | 857 | |
e3a59b4d HR |
858 | /* Call ACPI _GTM only once */ |
859 | if (!(drive->dn % 2)) | |
860 | ide_acpi_get_timing(hwif); | |
861 | ||
1da177e4 LT |
862 | memset(&rq, 0, sizeof(rq)); |
863 | memset(&rqpm, 0, sizeof(rqpm)); | |
864 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 865 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 866 | rq.special = &args; |
c00895ab | 867 | rq.data = &rqpm; |
1da177e4 | 868 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
869 | if (mesg.event == PM_EVENT_PRETHAW) |
870 | mesg.event = PM_EVENT_FREEZE; | |
871 | rqpm.pm_state = mesg.event; | |
1da177e4 | 872 | |
5e32132b SL |
873 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
874 | /* only call ACPI _PS3 after both drivers are suspended */ | |
875 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
876 | && hwif->drives[1].present) | |
877 | || !hwif->drives[0].present | |
878 | || !hwif->drives[1].present)) | |
879 | ide_acpi_set_state(hwif, 0); | |
880 | return ret; | |
1da177e4 LT |
881 | } |
882 | ||
883 | static int generic_ide_resume(struct device *dev) | |
884 | { | |
885 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 886 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
887 | struct request rq; |
888 | struct request_pm_state rqpm; | |
889 | ide_task_t args; | |
0d2157f7 | 890 | int err; |
1da177e4 | 891 | |
e3a59b4d | 892 | /* Call ACPI _STM only once */ |
5e32132b SL |
893 | if (!(drive->dn % 2)) { |
894 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 895 | ide_acpi_push_timing(hwif); |
5e32132b | 896 | } |
e3a59b4d HR |
897 | |
898 | ide_acpi_exec_tfs(drive); | |
899 | ||
1da177e4 LT |
900 | memset(&rq, 0, sizeof(rq)); |
901 | memset(&rqpm, 0, sizeof(rqpm)); | |
902 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 903 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 904 | rq.special = &args; |
c00895ab | 905 | rq.data = &rqpm; |
1da177e4 | 906 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 907 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 908 | |
0d2157f7 LT |
909 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
910 | ||
ce9b2b0a RW |
911 | if (err == 0 && dev->driver) { |
912 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
913 | ||
914 | if (drv->resume) | |
915 | drv->resume(drive); | |
916 | } | |
0d2157f7 LT |
917 | |
918 | return err; | |
1da177e4 LT |
919 | } |
920 | ||
921 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
922 | unsigned int cmd, unsigned long arg) | |
923 | { | |
1497943e | 924 | unsigned long flags; |
1da177e4 | 925 | ide_driver_t *drv; |
1da177e4 | 926 | void __user *p = (void __user *)arg; |
1985026d | 927 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 928 | u8 *val; |
1da177e4 | 929 | |
1497943e BZ |
930 | switch (cmd) { |
931 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
932 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
933 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
934 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
935 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
936 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
937 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
938 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
939 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 940 | } |
1da177e4 LT |
941 | |
942 | switch (cmd) { | |
1da177e4 LT |
943 | case HDIO_OBSOLETE_IDENTITY: |
944 | case HDIO_GET_IDENTITY: | |
945 | if (bdev != bdev->bd_contains) | |
946 | return -EINVAL; | |
947 | if (drive->id_read == 0) | |
948 | return -ENOMSG; | |
949 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
950 | return -EFAULT; | |
951 | return 0; | |
952 | ||
953 | case HDIO_GET_NICE: | |
954 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
955 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 956 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 957 | (long __user *) arg); |
1da177e4 LT |
958 | #ifdef CONFIG_IDE_TASK_IOCTL |
959 | case HDIO_DRIVE_TASKFILE: | |
960 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
961 | return -EACCES; | |
962 | switch(drive->media) { | |
963 | case ide_disk: | |
964 | return ide_taskfile_ioctl(drive, cmd, arg); | |
965 | default: | |
966 | return -ENOMSG; | |
967 | } | |
968 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
969 | ||
970 | case HDIO_DRIVE_CMD: | |
971 | if (!capable(CAP_SYS_RAWIO)) | |
972 | return -EACCES; | |
973 | return ide_cmd_ioctl(drive, cmd, arg); | |
974 | ||
975 | case HDIO_DRIVE_TASK: | |
976 | if (!capable(CAP_SYS_RAWIO)) | |
977 | return -EACCES; | |
978 | return ide_task_ioctl(drive, cmd, arg); | |
979 | ||
980 | case HDIO_SCAN_HWIF: | |
981 | { | |
982 | hw_regs_t hw; | |
983 | int args[3]; | |
984 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
985 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
986 | return -EFAULT; | |
987 | memset(&hw, 0, sizeof(hw)); | |
988 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
989 | (unsigned long) args[1], NULL); | |
990 | hw.irq = args[2]; | |
cbb010c1 | 991 | if (ide_register_hw(&hw, NULL, NULL) == -1) |
1da177e4 LT |
992 | return -EIO; |
993 | return 0; | |
994 | } | |
995 | case HDIO_UNREGISTER_HWIF: | |
996 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
997 | /* (arg > MAX_HWIFS) checked in function */ | |
f82c2b17 | 998 | ide_unregister(arg, 1, 1); |
1da177e4 LT |
999 | return 0; |
1000 | case HDIO_SET_NICE: | |
1001 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1002 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1003 | return -EPERM; | |
1004 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1005 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1006 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1007 | drive->dsc_overlap = 0; | |
1008 | return -EPERM; | |
1009 | } | |
1010 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1011 | return 0; | |
1012 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
1013 | if (!capable(CAP_SYS_ADMIN)) |
1014 | return -EACCES; | |
1015 | ||
1da177e4 LT |
1016 | /* |
1017 | * Abort the current command on the | |
1018 | * group if there is one, taking | |
1019 | * care not to allow anything else | |
1020 | * to be queued and to die on the | |
1021 | * spot if we miss one somehow | |
1022 | */ | |
1023 | ||
1024 | spin_lock_irqsave(&ide_lock, flags); | |
1025 | ||
913759ac AC |
1026 | if (HWGROUP(drive)->resetting) { |
1027 | spin_unlock_irqrestore(&ide_lock, flags); | |
1028 | return -EBUSY; | |
1029 | } | |
1030 | ||
1da177e4 LT |
1031 | ide_abort(drive, "drive reset"); |
1032 | ||
125e1874 | 1033 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 1034 | |
1da177e4 LT |
1035 | /* Ensure nothing gets queued after we |
1036 | drop the lock. Reset will clear the busy */ | |
dbecebca | 1037 | |
1da177e4 LT |
1038 | HWGROUP(drive)->busy = 1; |
1039 | spin_unlock_irqrestore(&ide_lock, flags); | |
1040 | (void) ide_do_reset(drive); | |
1041 | ||
1042 | return 0; | |
1da177e4 LT |
1043 | case HDIO_GET_BUSSTATE: |
1044 | if (!capable(CAP_SYS_ADMIN)) | |
1045 | return -EACCES; | |
1046 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1047 | return -EFAULT; | |
1048 | return 0; | |
1049 | ||
1050 | case HDIO_SET_BUSSTATE: | |
1051 | if (!capable(CAP_SYS_ADMIN)) | |
1052 | return -EACCES; | |
1053 | if (HWIF(drive)->busproc) | |
1054 | return HWIF(drive)->busproc(drive, (int)arg); | |
1055 | return -EOPNOTSUPP; | |
1056 | default: | |
1057 | return -EINVAL; | |
1058 | } | |
1497943e BZ |
1059 | |
1060 | read_val: | |
f9383c42 | 1061 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1062 | spin_lock_irqsave(&ide_lock, flags); |
1063 | err = *val; | |
1064 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1065 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1066 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1067 | ||
1068 | set_val: | |
1069 | if (bdev != bdev->bd_contains) | |
1070 | err = -EINVAL; | |
1071 | else { | |
1072 | if (!capable(CAP_SYS_ADMIN)) | |
1073 | err = -EACCES; | |
1074 | else { | |
f9383c42 | 1075 | mutex_lock(&ide_setting_mtx); |
1497943e | 1076 | err = setfunc(drive, arg); |
f9383c42 | 1077 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1078 | } |
1079 | } | |
1080 | return err; | |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1084 | ||
1085 | /* | |
1086 | * stridx() returns the offset of c within s, | |
1087 | * or -1 if c is '\0' or not found within s. | |
1088 | */ | |
1089 | static int __init stridx (const char *s, char c) | |
1090 | { | |
1091 | char *i = strchr(s, c); | |
1092 | return (i && c) ? i - s : -1; | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * match_parm() does parsing for ide_setup(): | |
1097 | * | |
1098 | * 1. the first char of s must be '='. | |
1099 | * 2. if the remainder matches one of the supplied keywords, | |
1100 | * the index (1 based) of the keyword is negated and returned. | |
1101 | * 3. if the remainder is a series of no more than max_vals numbers | |
1102 | * separated by commas, the numbers are saved in vals[] and a | |
1103 | * count of how many were saved is returned. Base10 is assumed, | |
1104 | * and base16 is allowed when prefixed with "0x". | |
1105 | * 4. otherwise, zero is returned. | |
1106 | */ | |
1107 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1108 | { | |
1109 | static const char *decimal = "0123456789"; | |
1110 | static const char *hex = "0123456789abcdef"; | |
1111 | int i, n; | |
1112 | ||
1113 | if (*s++ == '=') { | |
1114 | /* | |
1115 | * Try matching against the supplied keywords, | |
1116 | * and return -(index+1) if we match one | |
1117 | */ | |
1118 | if (keywords != NULL) { | |
1119 | for (i = 0; *keywords != NULL; ++i) { | |
1120 | if (!strcmp(s, *keywords++)) | |
1121 | return -(i+1); | |
1122 | } | |
1123 | } | |
1124 | /* | |
1125 | * Look for a series of no more than "max_vals" | |
1126 | * numeric values separated by commas, in base10, | |
1127 | * or base16 when prefixed with "0x". | |
1128 | * Return a count of how many were found. | |
1129 | */ | |
1130 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1131 | vals[n] = i; | |
1132 | while ((i = stridx(decimal, *++s)) >= 0) | |
1133 | vals[n] = (vals[n] * 10) + i; | |
1134 | if (*s == 'x' && !vals[n]) { | |
1135 | while ((i = stridx(hex, *++s)) >= 0) | |
1136 | vals[n] = (vals[n] * 0x10) + i; | |
1137 | } | |
1138 | if (++n == max_vals) | |
1139 | break; | |
1140 | if (*s == ',' || *s == ';') | |
1141 | ++s; | |
1142 | } | |
1143 | if (!*s) | |
1144 | return n; | |
1145 | } | |
1146 | return 0; /* zero = nothing matched */ | |
1147 | } | |
1148 | ||
84913882 | 1149 | extern int probe_ali14xx; |
84913882 | 1150 | extern int probe_umc8672; |
84913882 | 1151 | extern int probe_dtc2278; |
84913882 | 1152 | extern int probe_ht6560b; |
84913882 | 1153 | extern int probe_qd65xx; |
ade2daf9 | 1154 | extern int cmd640_vlb; |
1da177e4 LT |
1155 | |
1156 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1157 | ||
1158 | /* | |
1159 | * ide_setup() gets called VERY EARLY during initialization, | |
1160 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1161 | * | |
1c10e938 | 1162 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
1163 | */ |
1164 | static int __init ide_setup(char *s) | |
1165 | { | |
1166 | int i, vals[3]; | |
1167 | ide_hwif_t *hwif; | |
1168 | ide_drive_t *drive; | |
1169 | unsigned int hw, unit; | |
1170 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1171 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1172 | ||
1173 | ||
1174 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1175 | return 0; /* driver and not us */ | |
1176 | ||
1177 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1178 | return 0; | |
1179 | ||
1180 | printk(KERN_INFO "ide_setup: %s", s); | |
1181 | init_ide_data (); | |
1182 | ||
1183 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1184 | if (!strcmp(s, "ide=doubler")) { | |
1185 | extern int ide_doubler; | |
1186 | ||
1187 | printk(" : Enabled support for IDE doublers\n"); | |
1188 | ide_doubler = 1; | |
1189 | return 1; | |
1190 | } | |
1191 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1192 | ||
1193 | if (!strcmp(s, "ide=nodma")) { | |
1194 | printk(" : Prevented DMA\n"); | |
1195 | noautodma = 1; | |
c223701c | 1196 | goto obsolete_option; |
1da177e4 LT |
1197 | } |
1198 | ||
e3a59b4d HR |
1199 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1200 | if (!strcmp(s, "ide=noacpi")) { | |
1201 | //printk(" : Disable IDE ACPI support.\n"); | |
1202 | ide_noacpi = 1; | |
1203 | return 1; | |
1204 | } | |
1205 | if (!strcmp(s, "ide=acpigtf")) { | |
1206 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1207 | ide_noacpitfs = 0; | |
1208 | return 1; | |
1209 | } | |
1210 | if (!strcmp(s, "ide=acpionboot")) { | |
1211 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1212 | ide_noacpionboot = 0; | |
1213 | return 1; | |
1214 | } | |
1215 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1216 | ||
1da177e4 LT |
1217 | /* |
1218 | * Look for drive options: "hdx=" | |
1219 | */ | |
1220 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1221 | const char *hd_words[] = { | |
c223701c | 1222 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 1223 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 1224 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1225 | unit = s[2] - 'a'; |
1226 | hw = unit / MAX_DRIVES; | |
1227 | unit = unit % MAX_DRIVES; | |
1228 | hwif = &ide_hwifs[hw]; | |
1229 | drive = &hwif->drives[unit]; | |
1230 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1231 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 1232 | goto obsolete_option; |
1da177e4 LT |
1233 | } |
1234 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1235 | case -1: /* "none" */ | |
1236 | case -2: /* "noprobe" */ | |
1237 | drive->noprobe = 1; | |
1238 | goto done; | |
1239 | case -3: /* "nowerr" */ | |
1240 | drive->bad_wstat = BAD_R_STAT; | |
1241 | hwif->noprobe = 0; | |
1242 | goto done; | |
1243 | case -4: /* "cdrom" */ | |
1244 | drive->present = 1; | |
1245 | drive->media = ide_cdrom; | |
1246 | /* an ATAPI device ignores DRDY */ | |
1247 | drive->ready_stat = 0; | |
1248 | hwif->noprobe = 0; | |
1249 | goto done; | |
c223701c BZ |
1250 | case -5: /* nodma */ |
1251 | drive->nodma = 1; | |
1252 | goto done; | |
1da177e4 LT |
1253 | case -6: /* "autotune" */ |
1254 | drive->autotune = IDE_TUNE_AUTO; | |
1255 | goto obsolete_option; | |
1256 | case -7: /* "noautotune" */ | |
1257 | drive->autotune = IDE_TUNE_NOAUTO; | |
1258 | goto obsolete_option; | |
36193484 JA |
1259 | case -11: /* noflush */ |
1260 | drive->noflush = 1; | |
1261 | goto done; | |
1da177e4 LT |
1262 | case -12: /* "remap" */ |
1263 | drive->remap_0_to_1 = 1; | |
d708c40d | 1264 | goto obsolete_option; |
1da177e4 LT |
1265 | case -13: /* "remap63" */ |
1266 | drive->sect0 = 63; | |
d708c40d | 1267 | goto obsolete_option; |
1da177e4 LT |
1268 | case -14: /* "scsi" */ |
1269 | drive->scsi = 1; | |
15220d9b | 1270 | goto obsolete_option; |
1da177e4 LT |
1271 | case 3: /* cyl,head,sect */ |
1272 | drive->media = ide_disk; | |
1273 | drive->ready_stat = READY_STAT; | |
1274 | drive->cyl = drive->bios_cyl = vals[0]; | |
1275 | drive->head = drive->bios_head = vals[1]; | |
1276 | drive->sect = drive->bios_sect = vals[2]; | |
1277 | drive->present = 1; | |
1278 | drive->forced_geom = 1; | |
1279 | hwif->noprobe = 0; | |
1280 | goto done; | |
1281 | default: | |
1282 | goto bad_option; | |
1283 | } | |
1284 | } | |
1285 | ||
1286 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1287 | goto bad_option; | |
1288 | /* | |
1289 | * Look for bus speed option: "idebus=" | |
1290 | */ | |
1291 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1292 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1293 | goto bad_option; | |
1294 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1295 | idebus_parameter = vals[0]; | |
1296 | } else | |
1297 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1298 | goto done; | |
1299 | } | |
1300 | /* | |
1301 | * Look for interface options: "idex=" | |
1302 | */ | |
1303 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1304 | /* | |
1305 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1306 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1307 | */ | |
1308 | static const char *ide_words[] = { | |
b6209a90 | 1309 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1310 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1311 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1312 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 BZ |
1313 | |
1314 | hw_regs_t hwregs; | |
1315 | ||
1da177e4 LT |
1316 | hw = s[3] - '0'; |
1317 | hwif = &ide_hwifs[hw]; | |
1318 | i = match_parm(&s[4], ide_words, vals, 3); | |
1319 | ||
1320 | /* | |
1321 | * Cryptic check to ensure chipset not already set for hwif. | |
1322 | * Note: we can't depend on hwif->chipset here. | |
1323 | */ | |
1324 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1325 | /* chipset already specified */ | |
1326 | if (is_chipset_set[hw]) | |
1327 | goto bad_option; | |
1328 | if (i > -18 && i <= -11) { | |
1329 | /* these drivers are for "ide0=" only */ | |
1330 | if (hw != 0) | |
1331 | goto bad_hwif; | |
1332 | /* chipset already specified for 2nd port */ | |
1333 | if (is_chipset_set[hw+1]) | |
1334 | goto bad_option; | |
1335 | } | |
1336 | is_chipset_set[hw] = 1; | |
1337 | printk("\n"); | |
1338 | } | |
1339 | ||
1340 | switch (i) { | |
1341 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1342 | case -17: /* "ali14xx" */ | |
1343 | probe_ali14xx = 1; | |
9c027c68 | 1344 | goto obsolete_option; |
1da177e4 LT |
1345 | #endif |
1346 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1347 | case -16: /* "umc8672" */ | |
1348 | probe_umc8672 = 1; | |
9c027c68 | 1349 | goto obsolete_option; |
1da177e4 LT |
1350 | #endif |
1351 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1352 | case -15: /* "dtc2278" */ | |
1353 | probe_dtc2278 = 1; | |
9c027c68 | 1354 | goto obsolete_option; |
1da177e4 LT |
1355 | #endif |
1356 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1357 | case -14: /* "cmd640_vlb" */ | |
1da177e4 | 1358 | cmd640_vlb = 1; |
9c027c68 | 1359 | goto obsolete_option; |
1da177e4 LT |
1360 | #endif |
1361 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1362 | case -13: /* "ht6560b" */ | |
1363 | probe_ht6560b = 1; | |
9c027c68 | 1364 | goto obsolete_option; |
1da177e4 LT |
1365 | #endif |
1366 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1367 | case -12: /* "qd65xx" */ | |
1368 | probe_qd65xx = 1; | |
9c027c68 | 1369 | goto obsolete_option; |
1da177e4 LT |
1370 | #endif |
1371 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1372 | case -11: /* "four" drives on one set of ports */ | |
1373 | { | |
1374 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1375 | mate->drives[0].select.all ^= 0x20; | |
1376 | mate->drives[1].select.all ^= 0x20; | |
1377 | hwif->chipset = mate->chipset = ide_4drives; | |
1378 | mate->irq = hwif->irq; | |
1379 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1380 | hwif->mate = mate; |
1381 | mate->mate = hwif; | |
1382 | hwif->serialized = mate->serialized = 1; | |
1383 | goto obsolete_option; | |
1da177e4 LT |
1384 | } |
1385 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1386 | case -10: /* minus10 */ | |
1387 | case -9: /* minus9 */ | |
1388 | case -8: /* minus8 */ | |
1b516940 | 1389 | case -6: |
b6209a90 BZ |
1390 | case -4: |
1391 | case -3: | |
1da177e4 LT |
1392 | goto bad_option; |
1393 | case -7: /* ata66 */ | |
1394 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1395 | /* |
1396 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1397 | * cable detection is also overriden. | |
1398 | */ | |
1399 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1400 | goto obsolete_option; |
1401 | #else | |
1402 | goto bad_hwif; | |
1403 | #endif | |
1da177e4 LT |
1404 | case -5: /* "reset" */ |
1405 | hwif->reset = 1; | |
1406 | goto obsolete_option; | |
1da177e4 | 1407 | case -2: /* "serialize" */ |
1da177e4 LT |
1408 | hwif->mate = &ide_hwifs[hw^1]; |
1409 | hwif->mate->mate = hwif; | |
1410 | hwif->serialized = hwif->mate->serialized = 1; | |
1411 | goto obsolete_option; | |
1412 | ||
1413 | case -1: /* "noprobe" */ | |
1414 | hwif->noprobe = 1; | |
c53ea18d | 1415 | goto obsolete_option; |
1da177e4 LT |
1416 | |
1417 | case 1: /* base */ | |
1418 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1419 | case 2: /* base,ctl */ | |
1420 | vals[2] = 0; /* default irq = probe for it */ | |
1421 | case 3: /* base,ctl,irq */ | |
9239b333 BZ |
1422 | memset(&hwregs, 0, sizeof(hwregs)); |
1423 | ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq); | |
1424 | memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports)); | |
1da177e4 LT |
1425 | hwif->irq = vals[2]; |
1426 | hwif->noprobe = 0; | |
1427 | hwif->chipset = ide_forced; | |
1428 | goto obsolete_option; | |
1429 | ||
1430 | case 0: goto bad_option; | |
1431 | default: | |
1432 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1433 | return 1; | |
1434 | } | |
1435 | } | |
1436 | bad_option: | |
1437 | printk(" -- BAD OPTION\n"); | |
1438 | return 1; | |
1439 | obsolete_option: | |
1440 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1441 | return 1; | |
1442 | bad_hwif: | |
1443 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1444 | done: | |
1445 | printk("\n"); | |
1446 | return 1; | |
1447 | } | |
1448 | ||
1da177e4 LT |
1449 | EXPORT_SYMBOL(ide_lock); |
1450 | ||
8604affd BZ |
1451 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1452 | { | |
1453 | return 1; | |
1454 | } | |
1455 | ||
263756ec KS |
1456 | static char *media_string(ide_drive_t *drive) |
1457 | { | |
1458 | switch (drive->media) { | |
1459 | case ide_disk: | |
1460 | return "disk"; | |
1461 | case ide_cdrom: | |
1462 | return "cdrom"; | |
1463 | case ide_tape: | |
1464 | return "tape"; | |
1465 | case ide_floppy: | |
1466 | return "floppy"; | |
a7a832de DK |
1467 | case ide_optical: |
1468 | return "optical"; | |
263756ec KS |
1469 | default: |
1470 | return "UNKNOWN"; | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1475 | { | |
1476 | ide_drive_t *drive = to_ide_device(dev); | |
1477 | return sprintf(buf, "%s\n", media_string(drive)); | |
1478 | } | |
1479 | ||
1480 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1481 | { | |
1482 | ide_drive_t *drive = to_ide_device(dev); | |
1483 | return sprintf(buf, "%s\n", drive->name); | |
1484 | } | |
1485 | ||
1486 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1487 | { | |
1488 | ide_drive_t *drive = to_ide_device(dev); | |
1489 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1490 | } | |
1491 | ||
e11b9035 BZ |
1492 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1493 | char *buf) | |
1494 | { | |
1495 | ide_drive_t *drive = to_ide_device(dev); | |
1496 | return sprintf(buf, "%s\n", drive->id->model); | |
1497 | } | |
1498 | ||
1499 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1500 | char *buf) | |
1501 | { | |
1502 | ide_drive_t *drive = to_ide_device(dev); | |
1503 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1504 | } | |
1505 | ||
1506 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1507 | char *buf) | |
1508 | { | |
1509 | ide_drive_t *drive = to_ide_device(dev); | |
1510 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1511 | } | |
1512 | ||
263756ec KS |
1513 | static struct device_attribute ide_dev_attrs[] = { |
1514 | __ATTR_RO(media), | |
1515 | __ATTR_RO(drivename), | |
1516 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1517 | __ATTR_RO(model), |
1518 | __ATTR_RO(firmware), | |
1519 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1520 | __ATTR_NULL |
1521 | }; | |
1522 | ||
7eff2e7a | 1523 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1524 | { |
1525 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1526 | |
1527 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1528 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1529 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1530 | return 0; |
1531 | } | |
1532 | ||
4031bbe4 RK |
1533 | static int generic_ide_probe(struct device *dev) |
1534 | { | |
1535 | ide_drive_t *drive = to_ide_device(dev); | |
1536 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1537 | ||
1538 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1539 | } | |
1540 | ||
1541 | static int generic_ide_remove(struct device *dev) | |
1542 | { | |
1543 | ide_drive_t *drive = to_ide_device(dev); | |
1544 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1545 | ||
1546 | if (drv->remove) | |
1547 | drv->remove(drive); | |
1548 | ||
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static void generic_ide_shutdown(struct device *dev) | |
1553 | { | |
1554 | ide_drive_t *drive = to_ide_device(dev); | |
1555 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1556 | ||
1557 | if (dev->driver && drv->shutdown) | |
1558 | drv->shutdown(drive); | |
1559 | } | |
1560 | ||
1da177e4 LT |
1561 | struct bus_type ide_bus_type = { |
1562 | .name = "ide", | |
8604affd | 1563 | .match = ide_bus_match, |
263756ec | 1564 | .uevent = ide_uevent, |
4031bbe4 RK |
1565 | .probe = generic_ide_probe, |
1566 | .remove = generic_ide_remove, | |
1567 | .shutdown = generic_ide_shutdown, | |
263756ec | 1568 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1569 | .suspend = generic_ide_suspend, |
1570 | .resume = generic_ide_resume, | |
1571 | }; | |
1572 | ||
8604affd BZ |
1573 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1574 | ||
1da177e4 LT |
1575 | /* |
1576 | * This is gets invoked once during initialization, to set *everything* up | |
1577 | */ | |
1578 | static int __init ide_init(void) | |
1579 | { | |
349ae23f RD |
1580 | int ret; |
1581 | ||
eba8ff94 | 1582 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1583 | system_bus_speed = ide_system_bus_speed(); |
1584 | ||
537f06c5 BZ |
1585 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1586 | "for PIO modes%s\n", system_bus_speed, | |
1587 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1588 | ||
349ae23f RD |
1589 | ret = bus_register(&ide_bus_type); |
1590 | if (ret < 0) { | |
1591 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1592 | return ret; | |
1593 | } | |
1da177e4 LT |
1594 | |
1595 | init_ide_data(); | |
1596 | ||
5cbf79cd | 1597 | proc_ide_create(); |
1da177e4 | 1598 | |
1da177e4 LT |
1599 | return 0; |
1600 | } | |
1601 | ||
1602 | #ifdef MODULE | |
1603 | static char *options = NULL; | |
1604 | module_param(options, charp, 0); | |
1605 | MODULE_LICENSE("GPL"); | |
1606 | ||
1607 | static void __init parse_options (char *line) | |
1608 | { | |
1609 | char *next = line; | |
1610 | ||
1611 | if (line == NULL || !*line) | |
1612 | return; | |
1613 | while ((line = next) != NULL) { | |
1614 | if ((next = strchr(line,' ')) != NULL) | |
1615 | *next++ = 0; | |
1616 | if (!ide_setup(line)) | |
1617 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1618 | } | |
1619 | } | |
1620 | ||
fbd8ad30 | 1621 | int __init init_module (void) |
1da177e4 LT |
1622 | { |
1623 | parse_options(options); | |
1624 | return ide_init(); | |
1625 | } | |
1626 | ||
eb797227 | 1627 | void __exit cleanup_module (void) |
1da177e4 LT |
1628 | { |
1629 | int index; | |
1630 | ||
1631 | for (index = 0; index < MAX_HWIFS; ++index) | |
f82c2b17 | 1632 | ide_unregister(index, 0, 0); |
1da177e4 | 1633 | |
1da177e4 | 1634 | proc_ide_destroy(); |
1da177e4 LT |
1635 | |
1636 | bus_unregister(&ide_bus_type); | |
1637 | } | |
1638 | ||
1639 | #else /* !MODULE */ | |
1640 | ||
1641 | __setup("", ide_setup); | |
1642 | ||
1643 | module_init(ide_init); | |
1644 | ||
1645 | #endif /* MODULE */ |