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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 | ||
6d208b39 | 93 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
ade2daf9 | 94 | int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
1da177e4 LT |
95 | #endif |
96 | ||
1da177e4 | 97 | int noautodma = 0; |
1da177e4 | 98 | |
e3a59b4d HR |
99 | #ifdef CONFIG_BLK_DEV_IDEACPI |
100 | int ide_noacpi = 0; | |
101 | int ide_noacpitfs = 1; | |
102 | int ide_noacpionboot = 1; | |
103 | #endif | |
104 | ||
1da177e4 LT |
105 | /* |
106 | * This is declared extern in ide.h, for access by other IDE modules: | |
107 | */ | |
108 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ | |
109 | ||
110 | EXPORT_SYMBOL(ide_hwifs); | |
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 LT |
116 | { |
117 | unsigned int unit; | |
118 | ||
119 | /* bulk initialize hwif & drive info with zeros */ | |
120 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
121 | ||
122 | /* fill in any non-zero initial values */ | |
123 | hwif->index = index; | |
124 | hwif->major = ide_hwif_to_major[index]; | |
125 | ||
126 | hwif->name[0] = 'i'; | |
127 | hwif->name[1] = 'd'; | |
128 | hwif->name[2] = 'e'; | |
129 | hwif->name[3] = '0' + index; | |
130 | ||
131 | hwif->bus_state = BUSSTATE_ON; | |
132 | ||
f36d4024 | 133 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
134 | |
135 | default_hwif_iops(hwif); | |
136 | default_hwif_transport(hwif); | |
137 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
138 | ide_drive_t *drive = &hwif->drives[unit]; | |
139 | ||
140 | drive->media = ide_disk; | |
141 | drive->select.all = (unit<<4)|0xa0; | |
142 | drive->hwif = hwif; | |
143 | drive->ctl = 0x08; | |
144 | drive->ready_stat = READY_STAT; | |
145 | drive->bad_wstat = BAD_W_STAT; | |
146 | drive->special.b.recalibrate = 1; | |
147 | drive->special.b.set_geometry = 1; | |
148 | drive->name[0] = 'h'; | |
149 | drive->name[1] = 'd'; | |
150 | drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; | |
151 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; | |
152 | drive->using_dma = 0; | |
1da177e4 LT |
153 | drive->vdma = 0; |
154 | INIT_LIST_HEAD(&drive->list); | |
f36d4024 | 155 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
156 | } |
157 | } | |
cbb010c1 | 158 | EXPORT_SYMBOL_GPL(ide_init_port_data); |
1da177e4 LT |
159 | |
160 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
161 | { | |
162 | hw_regs_t hw; | |
163 | ||
164 | memset(&hw, 0, sizeof(hw_regs_t)); | |
165 | ||
166 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
167 | ||
1da177e4 LT |
168 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
169 | ||
170 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; | |
171 | #ifdef CONFIG_BLK_DEV_HD | |
172 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) | |
173 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ | |
174 | #endif | |
175 | } | |
176 | ||
1da177e4 LT |
177 | /* |
178 | * init_ide_data() sets reasonable default values into all fields | |
179 | * of all instances of the hwifs and drives, but only on the first call. | |
180 | * Subsequent calls have no effect (they don't wipe out anything). | |
181 | * | |
182 | * This routine is normally called at driver initialization time, | |
183 | * but may also be called MUCH earlier during kernel "command-line" | |
184 | * parameter processing. As such, we cannot depend on any other parts | |
185 | * of the kernel (such as memory allocation) to be functioning yet. | |
186 | * | |
187 | * This is too bad, as otherwise we could dynamically allocate the | |
188 | * ide_drive_t structs as needed, rather than always consuming memory | |
189 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
190 | * | |
191 | * FIXME: We should stuff the setup data into __init and copy the | |
192 | * relevant hwifs/allocate them properly during boot. | |
193 | */ | |
194 | #define MAGIC_COOKIE 0x12345678 | |
195 | static void __init init_ide_data (void) | |
196 | { | |
197 | ide_hwif_t *hwif; | |
198 | unsigned int index; | |
199 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
200 | ||
201 | if (magic_cookie != MAGIC_COOKIE) | |
202 | return; /* already initialized */ | |
203 | magic_cookie = 0; | |
204 | ||
205 | /* Initialise all interface structures */ | |
206 | for (index = 0; index < MAX_HWIFS; ++index) { | |
207 | hwif = &ide_hwifs[index]; | |
cbb010c1 | 208 | ide_init_port_data(hwif, index); |
1da177e4 LT |
209 | init_hwif_default(hwif, index); |
210 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
9239b333 | 211 | hwif->irq = |
1da177e4 LT |
212 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
213 | #endif | |
214 | } | |
1da177e4 LT |
215 | } |
216 | ||
217 | /** | |
218 | * ide_system_bus_speed - guess bus speed | |
219 | * | |
220 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
221 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
222 | * The default is 40 for known PCI systems, 50 otherwise. | |
223 | * The "idebus=xx" parameter can be used to override this value. | |
224 | * The actual value to be used is computed/displayed the first time | |
225 | * through. Drivers should only use this as a last resort. | |
226 | * | |
227 | * Returns a guessed speed in MHz. | |
228 | */ | |
229 | ||
230 | static int ide_system_bus_speed(void) | |
231 | { | |
232 | #ifdef CONFIG_PCI | |
233 | static struct pci_device_id pci_default[] = { | |
234 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
235 | { } | |
236 | }; | |
237 | #else | |
238 | #define pci_default 0 | |
239 | #endif /* CONFIG_PCI */ | |
240 | ||
537f06c5 BZ |
241 | /* user supplied value */ |
242 | if (idebus_parameter) | |
243 | return idebus_parameter; | |
244 | ||
245 | /* safe default value for PCI or VESA and PCI*/ | |
246 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
247 | } |
248 | ||
baa8f3e9 BZ |
249 | ide_hwif_t * ide_find_port(unsigned long base) |
250 | { | |
251 | ide_hwif_t *hwif; | |
252 | int i; | |
253 | ||
254 | for (i = 0; i < MAX_HWIFS; i++) { | |
255 | hwif = &ide_hwifs[i]; | |
256 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
257 | goto found; | |
258 | } | |
259 | ||
260 | for (i = 0; i < MAX_HWIFS; i++) { | |
261 | hwif = &ide_hwifs[i]; | |
262 | if (hwif->io_ports[IDE_DATA_OFFSET] == 0) | |
263 | goto found; | |
264 | } | |
265 | ||
266 | hwif = NULL; | |
267 | found: | |
268 | return hwif; | |
269 | } | |
270 | ||
271 | EXPORT_SYMBOL_GPL(ide_find_port); | |
272 | ||
1da177e4 LT |
273 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
274 | unsigned long addr, int num) | |
275 | { | |
276 | struct resource *res = request_region(addr, num, hwif->name); | |
277 | ||
278 | if (!res) | |
279 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
280 | hwif->name, addr, addr+num-1); | |
281 | return res; | |
282 | } | |
283 | ||
284 | /** | |
285 | * ide_hwif_request_regions - request resources for IDE | |
286 | * @hwif: interface to use | |
287 | * | |
288 | * Requests all the needed resources for an interface. | |
289 | * Right now core IDE code does this work which is deeply wrong. | |
290 | * MMIO leaves it to the controller driver, | |
291 | * PIO will migrate this way over time. | |
292 | */ | |
293 | ||
294 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
295 | { | |
296 | unsigned long addr; | |
297 | unsigned int i; | |
298 | ||
2ad1e558 | 299 | if (hwif->mmio) |
1da177e4 | 300 | return 0; |
1da177e4 LT |
301 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
302 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
303 | goto control_region_busy; | |
304 | hwif->straight8 = 0; | |
305 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
306 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
307 | if (!hwif_request_region(hwif, addr, 8)) | |
308 | goto data_region_busy; | |
309 | hwif->straight8 = 1; | |
310 | return 0; | |
311 | } | |
312 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
313 | addr = hwif->io_ports[i]; | |
314 | if (!hwif_request_region(hwif, addr, 1)) { | |
315 | while (--i) | |
316 | release_region(addr, 1); | |
317 | goto data_region_busy; | |
318 | } | |
319 | } | |
320 | return 0; | |
321 | ||
322 | data_region_busy: | |
323 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
324 | if (addr) | |
325 | release_region(addr, 1); | |
326 | control_region_busy: | |
327 | /* If any errors are return, we drop the hwif interface. */ | |
328 | return -EBUSY; | |
329 | } | |
330 | ||
331 | /** | |
332 | * ide_hwif_release_regions - free IDE resources | |
333 | * | |
334 | * Note that we only release the standard ports, | |
335 | * and do not even try to handle any extra ports | |
336 | * allocated for weird IDE interface chipsets. | |
337 | * | |
338 | * Note also that we don't yet handle mmio resources here. More | |
339 | * importantly our caller should be doing this so we need to | |
340 | * restructure this as a helper function for drivers. | |
341 | */ | |
342 | ||
343 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
344 | { | |
345 | u32 i = 0; | |
346 | ||
2ad1e558 | 347 | if (hwif->mmio) |
1da177e4 LT |
348 | return; |
349 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
350 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
351 | if (hwif->straight8) { | |
352 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
353 | return; | |
354 | } | |
355 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
356 | if (hwif->io_ports[i]) | |
357 | release_region(hwif->io_ports[i], 1); | |
358 | } | |
359 | ||
360 | /** | |
361 | * ide_hwif_restore - restore hwif to template | |
362 | * @hwif: hwif to update | |
363 | * @tmp_hwif: template | |
364 | * | |
020e322d | 365 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
366 | * from the template. |
367 | */ | |
368 | ||
369 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
370 | { | |
371 | hwif->hwgroup = tmp_hwif->hwgroup; | |
372 | ||
373 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
374 | ||
375 | hwif->proc = tmp_hwif->proc; | |
376 | ||
377 | hwif->major = tmp_hwif->major; | |
378 | hwif->straight8 = tmp_hwif->straight8; | |
379 | hwif->bus_state = tmp_hwif->bus_state; | |
380 | ||
6a824c92 BZ |
381 | hwif->host_flags = tmp_hwif->host_flags; |
382 | ||
4099d143 BZ |
383 | hwif->pio_mask = tmp_hwif->pio_mask; |
384 | ||
1da177e4 LT |
385 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
386 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
387 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
388 | ||
49521f97 BZ |
389 | hwif->cbl = tmp_hwif->cbl; |
390 | ||
1da177e4 LT |
391 | hwif->chipset = tmp_hwif->chipset; |
392 | hwif->hold = tmp_hwif->hold; | |
393 | ||
36501650 BZ |
394 | hwif->dev = tmp_hwif->dev; |
395 | ||
1da177e4 | 396 | #ifdef CONFIG_BLK_DEV_IDEPCI |
1da177e4 LT |
397 | hwif->cds = tmp_hwif->cds; |
398 | #endif | |
399 | ||
26bcb879 | 400 | hwif->set_pio_mode = tmp_hwif->set_pio_mode; |
88b2b32b | 401 | hwif->set_dma_mode = tmp_hwif->set_dma_mode; |
b4e44369 | 402 | hwif->mdma_filter = tmp_hwif->mdma_filter; |
2d5eaa6d | 403 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
404 | hwif->selectproc = tmp_hwif->selectproc; |
405 | hwif->reset_poll = tmp_hwif->reset_poll; | |
406 | hwif->pre_reset = tmp_hwif->pre_reset; | |
407 | hwif->resetproc = tmp_hwif->resetproc; | |
1da177e4 LT |
408 | hwif->maskproc = tmp_hwif->maskproc; |
409 | hwif->quirkproc = tmp_hwif->quirkproc; | |
410 | hwif->busproc = tmp_hwif->busproc; | |
411 | ||
412 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
413 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
414 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
415 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
416 | ||
15ce926a | 417 | hwif->dma_host_set = tmp_hwif->dma_host_set; |
1da177e4 LT |
418 | hwif->dma_setup = tmp_hwif->dma_setup; |
419 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
420 | hwif->dma_start = tmp_hwif->dma_start; | |
421 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
1da177e4 | 422 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 423 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
841d2a9b | 424 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 425 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
426 | |
427 | hwif->OUTB = tmp_hwif->OUTB; | |
428 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
429 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
430 | hwif->OUTSW = tmp_hwif->OUTSW; |
431 | hwif->OUTSL = tmp_hwif->OUTSL; | |
432 | ||
433 | hwif->INB = tmp_hwif->INB; | |
434 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
435 | hwif->INSW = tmp_hwif->INSW; |
436 | hwif->INSL = tmp_hwif->INSL; | |
437 | ||
438 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
439 | ||
440 | hwif->mmio = tmp_hwif->mmio; | |
441 | hwif->rqsize = tmp_hwif->rqsize; | |
1da177e4 LT |
442 | |
443 | #ifndef CONFIG_BLK_DEV_IDECS | |
444 | hwif->irq = tmp_hwif->irq; | |
445 | #endif | |
446 | ||
447 | hwif->dma_base = tmp_hwif->dma_base; | |
1da177e4 LT |
448 | hwif->dma_command = tmp_hwif->dma_command; |
449 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
450 | hwif->dma_status = tmp_hwif->dma_status; | |
451 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
452 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
453 | ||
1da177e4 LT |
454 | hwif->config_data = tmp_hwif->config_data; |
455 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
456 | hwif->extra_base = tmp_hwif->extra_base; |
457 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
458 | |
459 | hwif->hwif_data = tmp_hwif->hwif_data; | |
460 | } | |
461 | ||
fbd13088 | 462 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
463 | { |
464 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
465 | ||
466 | spin_lock_irq(&ide_lock); | |
467 | /* | |
468 | * Remove us from the hwgroup, and free | |
469 | * the hwgroup if we were the only member | |
470 | */ | |
471 | if (hwif->next == hwif) { | |
472 | BUG_ON(hwgroup->hwif != hwif); | |
473 | kfree(hwgroup); | |
474 | } else { | |
475 | /* There is another interface in hwgroup. | |
476 | * Unlink us, and set hwgroup->drive and ->hwif to | |
477 | * something sane. | |
478 | */ | |
479 | ide_hwif_t *g = hwgroup->hwif; | |
480 | ||
481 | while (g->next != hwif) | |
482 | g = g->next; | |
483 | g->next = hwif->next; | |
484 | if (hwgroup->hwif == hwif) { | |
485 | /* Chose a random hwif for hwgroup->hwif. | |
486 | * It's guaranteed that there are no drives | |
487 | * left in the hwgroup. | |
488 | */ | |
489 | BUG_ON(hwgroup->drive != NULL); | |
490 | hwgroup->hwif = g; | |
491 | } | |
492 | BUG_ON(hwgroup->hwif == hwif); | |
493 | } | |
494 | spin_unlock_irq(&ide_lock); | |
495 | } | |
496 | ||
1da177e4 | 497 | /** |
020e322d | 498 | * ide_unregister - free an IDE interface |
1da177e4 | 499 | * @index: index of interface (will change soon to a pointer) |
f82c2b17 BZ |
500 | * @init_default: init default hwif flag |
501 | * @restore: restore hwif flag | |
1da177e4 LT |
502 | * |
503 | * Perform the final unregister of an IDE interface. At the moment | |
504 | * we don't refcount interfaces so this will also get split up. | |
505 | * | |
506 | * Locking: | |
507 | * The caller must not hold the IDE locks | |
508 | * The drive present/vanishing is not yet properly locked | |
509 | * Take care with the callbacks. These have been split to avoid | |
510 | * deadlocking the IDE layer. The shutdown callback is called | |
511 | * before we take the lock and free resources. It is up to the | |
512 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
513 | * the interface will not be reopened (present/vanishing locking |
514 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
515 | * call the cleanup callback with the ide locks held. |
516 | * | |
517 | * Unregister restores the hwif structures to the default state. | |
518 | * This is raving bonkers. | |
519 | */ | |
520 | ||
f82c2b17 | 521 | void ide_unregister(unsigned int index, int init_default, int restore) |
1da177e4 LT |
522 | { |
523 | ide_drive_t *drive; | |
524 | ide_hwif_t *hwif, *g; | |
ef29888e | 525 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 526 | ide_hwgroup_t *hwgroup; |
8604affd | 527 | int irq_count = 0, unit; |
1da177e4 LT |
528 | |
529 | BUG_ON(index >= MAX_HWIFS); | |
530 | ||
531 | BUG_ON(in_interrupt()); | |
532 | BUG_ON(irqs_disabled()); | |
ef29888e | 533 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
534 | spin_lock_irq(&ide_lock); |
535 | hwif = &ide_hwifs[index]; | |
536 | if (!hwif->present) | |
537 | goto abort; | |
538 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
539 | drive = &hwif->drives[unit]; | |
94f6c59d | 540 | if (!drive->present) |
1da177e4 | 541 | continue; |
8604affd BZ |
542 | spin_unlock_irq(&ide_lock); |
543 | device_unregister(&drive->gendev); | |
f36d4024 | 544 | wait_for_completion(&drive->gendev_rel_comp); |
8604affd | 545 | spin_lock_irq(&ide_lock); |
1da177e4 LT |
546 | } |
547 | hwif->present = 0; | |
548 | ||
549 | spin_unlock_irq(&ide_lock); | |
550 | ||
5cbf79cd | 551 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
552 | |
553 | hwgroup = hwif->hwgroup; | |
554 | /* | |
555 | * free the irq if we were the only hwif using it | |
556 | */ | |
557 | g = hwgroup->hwif; | |
558 | do { | |
559 | if (g->irq == hwif->irq) | |
560 | ++irq_count; | |
561 | g = g->next; | |
562 | } while (g != hwgroup->hwif); | |
563 | if (irq_count == 1) | |
564 | free_irq(hwif->irq, hwgroup); | |
565 | ||
96e5ad30 | 566 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 567 | |
1da177e4 | 568 | device_unregister(&hwif->gendev); |
f36d4024 | 569 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
570 | |
571 | /* | |
572 | * Remove us from the kernel's knowledge | |
573 | */ | |
574 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
575 | kfree(hwif->sg_table); | |
576 | unregister_blkdev(hwif->major, hwif->name); | |
577 | spin_lock_irq(&ide_lock); | |
578 | ||
579 | if (hwif->dma_base) { | |
580 | (void) ide_release_dma(hwif); | |
581 | ||
582 | hwif->dma_base = 0; | |
1da177e4 LT |
583 | hwif->dma_command = 0; |
584 | hwif->dma_vendor1 = 0; | |
585 | hwif->dma_status = 0; | |
586 | hwif->dma_vendor3 = 0; | |
587 | hwif->dma_prdtable = 0; | |
020e322d SS |
588 | |
589 | hwif->extra_base = 0; | |
590 | hwif->extra_ports = 0; | |
1da177e4 LT |
591 | } |
592 | ||
7cba97f1 BZ |
593 | ide_hwif_release_regions(hwif); |
594 | ||
1da177e4 LT |
595 | /* copy original settings */ |
596 | tmp_hwif = *hwif; | |
597 | ||
598 | /* restore hwif data to pristine status */ | |
cbb010c1 | 599 | ide_init_port_data(hwif, index); |
1da177e4 | 600 | |
f82c2b17 BZ |
601 | if (init_default) |
602 | init_hwif_default(hwif, index); | |
603 | ||
604 | if (restore) | |
605 | ide_hwif_restore(hwif, &tmp_hwif); | |
1da177e4 LT |
606 | |
607 | abort: | |
608 | spin_unlock_irq(&ide_lock); | |
ef29888e | 609 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
610 | } |
611 | ||
612 | EXPORT_SYMBOL(ide_unregister); | |
613 | ||
57c802e8 BZ |
614 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
615 | { | |
616 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
617 | hwif->irq = hw->irq; | |
618 | hwif->noprobe = 0; | |
619 | hwif->chipset = hw->chipset; | |
620 | hwif->gendev.parent = hw->dev; | |
621 | hwif->ack_intr = hw->ack_intr; | |
622 | } | |
623 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
624 | ||
9e016a71 BZ |
625 | ide_hwif_t *ide_deprecated_find_port(unsigned long base) |
626 | { | |
627 | ide_hwif_t *hwif; | |
628 | int i; | |
629 | ||
630 | for (i = 0; i < MAX_HWIFS; i++) { | |
631 | hwif = &ide_hwifs[i]; | |
632 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
633 | goto found; | |
634 | } | |
635 | ||
636 | for (i = 0; i < MAX_HWIFS; i++) { | |
637 | hwif = &ide_hwifs[i]; | |
638 | if (hwif->hold) | |
639 | continue; | |
640 | if (!hwif->present && hwif->mate == NULL) | |
641 | goto found; | |
642 | } | |
643 | ||
644 | hwif = NULL; | |
645 | found: | |
646 | return hwif; | |
647 | } | |
648 | EXPORT_SYMBOL_GPL(ide_deprecated_find_port); | |
649 | ||
1da177e4 | 650 | /** |
fd9bb539 | 651 | * ide_register_hw - register IDE interface |
1da177e4 | 652 | * @hw: hardware registers |
f01393e4 | 653 | * @quirkproc: quirkproc function |
1da177e4 | 654 | * @hwifp: pointer to returned hwif |
1da177e4 LT |
655 | * |
656 | * Register an IDE interface, specifying exactly the registers etc. | |
1da177e4 LT |
657 | * |
658 | * Returns -1 on error. | |
659 | */ | |
660 | ||
f01393e4 | 661 | int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *), |
cbb010c1 | 662 | ide_hwif_t **hwifp) |
1da177e4 LT |
663 | { |
664 | int index, retry = 1; | |
665 | ide_hwif_t *hwif; | |
cbb010c1 | 666 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
795d74b5 | 667 | |
1da177e4 | 668 | do { |
9e016a71 | 669 | hwif = ide_deprecated_find_port(hw->io_ports[IDE_DATA_OFFSET]); |
9e016a71 BZ |
670 | if (hwif) |
671 | goto found; | |
1da177e4 | 672 | for (index = 0; index < MAX_HWIFS; index++) |
f82c2b17 | 673 | ide_unregister(index, 1, 1); |
1da177e4 LT |
674 | } while (retry--); |
675 | return -1; | |
676 | found: | |
0c6025d4 | 677 | index = hwif->index; |
1da177e4 | 678 | if (hwif->present) |
f82c2b17 | 679 | ide_unregister(index, 0, 1); |
ead741df | 680 | else if (!hwif->hold) |
cbb010c1 | 681 | ide_init_port_data(hwif, index); |
57c802e8 BZ |
682 | |
683 | ide_init_port_hw(hwif, hw); | |
f01393e4 | 684 | hwif->quirkproc = quirkproc; |
1da177e4 | 685 | |
cbb010c1 | 686 | idx[0] = index; |
8447d9d5 | 687 | |
c413b9b9 | 688 | ide_device_add(idx, NULL); |
1da177e4 LT |
689 | |
690 | if (hwifp) | |
691 | *hwifp = hwif; | |
692 | ||
cbb010c1 | 693 | return hwif->present ? index : -1; |
1da177e4 LT |
694 | } |
695 | ||
1da177e4 LT |
696 | EXPORT_SYMBOL(ide_register_hw); |
697 | ||
698 | /* | |
699 | * Locks for IDE setting functionality | |
700 | */ | |
701 | ||
f9383c42 | 702 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 703 | |
f9383c42 | 704 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 705 | |
1da177e4 LT |
706 | /** |
707 | * ide_spin_wait_hwgroup - wait for group | |
708 | * @drive: drive in the group | |
709 | * | |
710 | * Wait for an IDE device group to go non busy and then return | |
711 | * holding the ide_lock which guards the hwgroup->busy status | |
712 | * and right to use it. | |
713 | */ | |
714 | ||
715 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
716 | { | |
717 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
718 | unsigned long timeout = jiffies + (3 * HZ); | |
719 | ||
720 | spin_lock_irq(&ide_lock); | |
721 | ||
722 | while (hwgroup->busy) { | |
723 | unsigned long lflags; | |
724 | spin_unlock_irq(&ide_lock); | |
725 | local_irq_set(lflags); | |
726 | if (time_after(jiffies, timeout)) { | |
727 | local_irq_restore(lflags); | |
728 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
729 | return -EBUSY; | |
730 | } | |
731 | local_irq_restore(lflags); | |
732 | spin_lock_irq(&ide_lock); | |
733 | } | |
734 | return 0; | |
735 | } | |
736 | ||
737 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
738 | ||
7662d046 | 739 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 740 | { |
1497943e BZ |
741 | if (drive->no_io_32bit) |
742 | return -EPERM; | |
743 | ||
744 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
745 | return -EINVAL; | |
746 | ||
644a9d76 BZ |
747 | if (ide_spin_wait_hwgroup(drive)) |
748 | return -EBUSY; | |
749 | ||
1da177e4 | 750 | drive->io_32bit = arg; |
644a9d76 BZ |
751 | |
752 | spin_unlock_irq(&ide_lock); | |
753 | ||
1da177e4 LT |
754 | return 0; |
755 | } | |
756 | ||
1497943e BZ |
757 | static int set_ksettings(ide_drive_t *drive, int arg) |
758 | { | |
759 | if (arg < 0 || arg > 1) | |
760 | return -EINVAL; | |
761 | ||
762 | if (ide_spin_wait_hwgroup(drive)) | |
763 | return -EBUSY; | |
764 | drive->keep_settings = arg; | |
765 | spin_unlock_irq(&ide_lock); | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
7662d046 | 770 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
771 | { |
772 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
773 | ide_hwif_t *hwif = drive->hwif; |
774 | int err = -EPERM; | |
775 | ||
1497943e BZ |
776 | if (arg < 0 || arg > 1) |
777 | return -EINVAL; | |
778 | ||
1da177e4 | 779 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
780 | goto out; |
781 | ||
15ce926a | 782 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
783 | goto out; |
784 | ||
785 | err = -EBUSY; | |
786 | if (ide_spin_wait_hwgroup(drive)) | |
787 | goto out; | |
788 | /* | |
789 | * set ->busy flag, unlock and let it ride | |
790 | */ | |
791 | hwif->hwgroup->busy = 1; | |
792 | spin_unlock_irq(&ide_lock); | |
793 | ||
794 | err = 0; | |
795 | ||
1da177e4 | 796 | if (arg) { |
23b1bd45 | 797 | if (ide_set_dma(drive)) |
87996204 | 798 | err = -EIO; |
7469aaf6 BZ |
799 | } else |
800 | ide_dma_off(drive); | |
87996204 BZ |
801 | |
802 | /* | |
803 | * lock, clear ->busy flag and unlock before leaving | |
804 | */ | |
805 | spin_lock_irq(&ide_lock); | |
806 | hwif->hwgroup->busy = 0; | |
807 | spin_unlock_irq(&ide_lock); | |
808 | out: | |
809 | return err; | |
1da177e4 | 810 | #else |
1497943e BZ |
811 | if (arg < 0 || arg > 1) |
812 | return -EINVAL; | |
813 | ||
1da177e4 LT |
814 | return -EPERM; |
815 | #endif | |
816 | } | |
817 | ||
7662d046 | 818 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
819 | { |
820 | struct request rq; | |
821 | ||
1497943e BZ |
822 | if (arg < 0 || arg > 255) |
823 | return -EINVAL; | |
824 | ||
26bcb879 | 825 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 826 | return -ENOSYS; |
26bcb879 | 827 | |
1da177e4 LT |
828 | if (drive->special.b.set_tune) |
829 | return -EBUSY; | |
145b75e9 | 830 | |
1da177e4 | 831 | ide_init_drive_cmd(&rq); |
852738f3 | 832 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 833 | |
1da177e4 LT |
834 | drive->tune_req = (u8) arg; |
835 | drive->special.b.set_tune = 1; | |
836 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
837 | return 0; | |
838 | } | |
839 | ||
1497943e BZ |
840 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
841 | { | |
842 | if (drive->no_unmask) | |
843 | return -EPERM; | |
844 | ||
845 | if (arg < 0 || arg > 1) | |
846 | return -EINVAL; | |
847 | ||
848 | if (ide_spin_wait_hwgroup(drive)) | |
849 | return -EBUSY; | |
850 | drive->unmask = arg; | |
851 | spin_unlock_irq(&ide_lock); | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
1da177e4 LT |
856 | /** |
857 | * system_bus_clock - clock guess | |
858 | * | |
859 | * External version of the bus clock guess used by very old IDE drivers | |
860 | * for things like VLB timings. Should not be used. | |
861 | */ | |
862 | ||
863 | int system_bus_clock (void) | |
864 | { | |
537f06c5 | 865 | return system_bus_speed; |
1da177e4 LT |
866 | } |
867 | ||
868 | EXPORT_SYMBOL(system_bus_clock); | |
869 | ||
b887d2e6 | 870 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
871 | { |
872 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 873 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
874 | struct request rq; |
875 | struct request_pm_state rqpm; | |
876 | ide_task_t args; | |
5e32132b | 877 | int ret; |
1da177e4 | 878 | |
e3a59b4d HR |
879 | /* Call ACPI _GTM only once */ |
880 | if (!(drive->dn % 2)) | |
881 | ide_acpi_get_timing(hwif); | |
882 | ||
1da177e4 LT |
883 | memset(&rq, 0, sizeof(rq)); |
884 | memset(&rqpm, 0, sizeof(rqpm)); | |
885 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 886 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 887 | rq.special = &args; |
c00895ab | 888 | rq.data = &rqpm; |
1da177e4 | 889 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
890 | if (mesg.event == PM_EVENT_PRETHAW) |
891 | mesg.event = PM_EVENT_FREEZE; | |
892 | rqpm.pm_state = mesg.event; | |
1da177e4 | 893 | |
5e32132b SL |
894 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
895 | /* only call ACPI _PS3 after both drivers are suspended */ | |
896 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
897 | && hwif->drives[1].present) | |
898 | || !hwif->drives[0].present | |
899 | || !hwif->drives[1].present)) | |
900 | ide_acpi_set_state(hwif, 0); | |
901 | return ret; | |
1da177e4 LT |
902 | } |
903 | ||
904 | static int generic_ide_resume(struct device *dev) | |
905 | { | |
906 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 907 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
908 | struct request rq; |
909 | struct request_pm_state rqpm; | |
910 | ide_task_t args; | |
0d2157f7 | 911 | int err; |
1da177e4 | 912 | |
e3a59b4d | 913 | /* Call ACPI _STM only once */ |
5e32132b SL |
914 | if (!(drive->dn % 2)) { |
915 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 916 | ide_acpi_push_timing(hwif); |
5e32132b | 917 | } |
e3a59b4d HR |
918 | |
919 | ide_acpi_exec_tfs(drive); | |
920 | ||
1da177e4 LT |
921 | memset(&rq, 0, sizeof(rq)); |
922 | memset(&rqpm, 0, sizeof(rqpm)); | |
923 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 924 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 925 | rq.special = &args; |
c00895ab | 926 | rq.data = &rqpm; |
1da177e4 | 927 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 928 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 929 | |
0d2157f7 LT |
930 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
931 | ||
ce9b2b0a RW |
932 | if (err == 0 && dev->driver) { |
933 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
934 | ||
935 | if (drv->resume) | |
936 | drv->resume(drive); | |
937 | } | |
0d2157f7 LT |
938 | |
939 | return err; | |
1da177e4 LT |
940 | } |
941 | ||
942 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
943 | unsigned int cmd, unsigned long arg) | |
944 | { | |
1497943e | 945 | unsigned long flags; |
1da177e4 | 946 | ide_driver_t *drv; |
1da177e4 | 947 | void __user *p = (void __user *)arg; |
1985026d | 948 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 949 | u8 *val; |
1da177e4 | 950 | |
1497943e BZ |
951 | switch (cmd) { |
952 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
953 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
954 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
955 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
956 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
957 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
958 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
959 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
960 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 961 | } |
1da177e4 LT |
962 | |
963 | switch (cmd) { | |
1da177e4 LT |
964 | case HDIO_OBSOLETE_IDENTITY: |
965 | case HDIO_GET_IDENTITY: | |
966 | if (bdev != bdev->bd_contains) | |
967 | return -EINVAL; | |
968 | if (drive->id_read == 0) | |
969 | return -ENOMSG; | |
970 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
971 | return -EFAULT; | |
972 | return 0; | |
973 | ||
974 | case HDIO_GET_NICE: | |
975 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
976 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 977 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 978 | (long __user *) arg); |
1da177e4 LT |
979 | #ifdef CONFIG_IDE_TASK_IOCTL |
980 | case HDIO_DRIVE_TASKFILE: | |
981 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
982 | return -EACCES; | |
983 | switch(drive->media) { | |
984 | case ide_disk: | |
985 | return ide_taskfile_ioctl(drive, cmd, arg); | |
986 | default: | |
987 | return -ENOMSG; | |
988 | } | |
989 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
990 | ||
991 | case HDIO_DRIVE_CMD: | |
992 | if (!capable(CAP_SYS_RAWIO)) | |
993 | return -EACCES; | |
994 | return ide_cmd_ioctl(drive, cmd, arg); | |
995 | ||
996 | case HDIO_DRIVE_TASK: | |
997 | if (!capable(CAP_SYS_RAWIO)) | |
998 | return -EACCES; | |
999 | return ide_task_ioctl(drive, cmd, arg); | |
1000 | ||
1001 | case HDIO_SCAN_HWIF: | |
1002 | { | |
1003 | hw_regs_t hw; | |
1004 | int args[3]; | |
1005 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1006 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
1007 | return -EFAULT; | |
1008 | memset(&hw, 0, sizeof(hw)); | |
1009 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
1010 | (unsigned long) args[1], NULL); | |
1011 | hw.irq = args[2]; | |
cbb010c1 | 1012 | if (ide_register_hw(&hw, NULL, NULL) == -1) |
1da177e4 LT |
1013 | return -EIO; |
1014 | return 0; | |
1015 | } | |
1016 | case HDIO_UNREGISTER_HWIF: | |
1017 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1018 | /* (arg > MAX_HWIFS) checked in function */ | |
f82c2b17 | 1019 | ide_unregister(arg, 1, 1); |
1da177e4 LT |
1020 | return 0; |
1021 | case HDIO_SET_NICE: | |
1022 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1023 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1024 | return -EPERM; | |
1025 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1026 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1027 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1028 | drive->dsc_overlap = 0; | |
1029 | return -EPERM; | |
1030 | } | |
1031 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1032 | return 0; | |
1033 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
1034 | if (!capable(CAP_SYS_ADMIN)) |
1035 | return -EACCES; | |
1036 | ||
1da177e4 LT |
1037 | /* |
1038 | * Abort the current command on the | |
1039 | * group if there is one, taking | |
1040 | * care not to allow anything else | |
1041 | * to be queued and to die on the | |
1042 | * spot if we miss one somehow | |
1043 | */ | |
1044 | ||
1045 | spin_lock_irqsave(&ide_lock, flags); | |
1046 | ||
913759ac AC |
1047 | if (HWGROUP(drive)->resetting) { |
1048 | spin_unlock_irqrestore(&ide_lock, flags); | |
1049 | return -EBUSY; | |
1050 | } | |
1051 | ||
1da177e4 LT |
1052 | ide_abort(drive, "drive reset"); |
1053 | ||
125e1874 | 1054 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 1055 | |
1da177e4 LT |
1056 | /* Ensure nothing gets queued after we |
1057 | drop the lock. Reset will clear the busy */ | |
dbecebca | 1058 | |
1da177e4 LT |
1059 | HWGROUP(drive)->busy = 1; |
1060 | spin_unlock_irqrestore(&ide_lock, flags); | |
1061 | (void) ide_do_reset(drive); | |
1062 | ||
1063 | return 0; | |
1da177e4 LT |
1064 | case HDIO_GET_BUSSTATE: |
1065 | if (!capable(CAP_SYS_ADMIN)) | |
1066 | return -EACCES; | |
1067 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1068 | return -EFAULT; | |
1069 | return 0; | |
1070 | ||
1071 | case HDIO_SET_BUSSTATE: | |
1072 | if (!capable(CAP_SYS_ADMIN)) | |
1073 | return -EACCES; | |
1074 | if (HWIF(drive)->busproc) | |
1075 | return HWIF(drive)->busproc(drive, (int)arg); | |
1076 | return -EOPNOTSUPP; | |
1077 | default: | |
1078 | return -EINVAL; | |
1079 | } | |
1497943e BZ |
1080 | |
1081 | read_val: | |
f9383c42 | 1082 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1083 | spin_lock_irqsave(&ide_lock, flags); |
1084 | err = *val; | |
1085 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1086 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1087 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1088 | ||
1089 | set_val: | |
1090 | if (bdev != bdev->bd_contains) | |
1091 | err = -EINVAL; | |
1092 | else { | |
1093 | if (!capable(CAP_SYS_ADMIN)) | |
1094 | err = -EACCES; | |
1095 | else { | |
f9383c42 | 1096 | mutex_lock(&ide_setting_mtx); |
1497943e | 1097 | err = setfunc(drive, arg); |
f9383c42 | 1098 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1099 | } |
1100 | } | |
1101 | return err; | |
1da177e4 LT |
1102 | } |
1103 | ||
1104 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1105 | ||
1106 | /* | |
1107 | * stridx() returns the offset of c within s, | |
1108 | * or -1 if c is '\0' or not found within s. | |
1109 | */ | |
1110 | static int __init stridx (const char *s, char c) | |
1111 | { | |
1112 | char *i = strchr(s, c); | |
1113 | return (i && c) ? i - s : -1; | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * match_parm() does parsing for ide_setup(): | |
1118 | * | |
1119 | * 1. the first char of s must be '='. | |
1120 | * 2. if the remainder matches one of the supplied keywords, | |
1121 | * the index (1 based) of the keyword is negated and returned. | |
1122 | * 3. if the remainder is a series of no more than max_vals numbers | |
1123 | * separated by commas, the numbers are saved in vals[] and a | |
1124 | * count of how many were saved is returned. Base10 is assumed, | |
1125 | * and base16 is allowed when prefixed with "0x". | |
1126 | * 4. otherwise, zero is returned. | |
1127 | */ | |
1128 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1129 | { | |
1130 | static const char *decimal = "0123456789"; | |
1131 | static const char *hex = "0123456789abcdef"; | |
1132 | int i, n; | |
1133 | ||
1134 | if (*s++ == '=') { | |
1135 | /* | |
1136 | * Try matching against the supplied keywords, | |
1137 | * and return -(index+1) if we match one | |
1138 | */ | |
1139 | if (keywords != NULL) { | |
1140 | for (i = 0; *keywords != NULL; ++i) { | |
1141 | if (!strcmp(s, *keywords++)) | |
1142 | return -(i+1); | |
1143 | } | |
1144 | } | |
1145 | /* | |
1146 | * Look for a series of no more than "max_vals" | |
1147 | * numeric values separated by commas, in base10, | |
1148 | * or base16 when prefixed with "0x". | |
1149 | * Return a count of how many were found. | |
1150 | */ | |
1151 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1152 | vals[n] = i; | |
1153 | while ((i = stridx(decimal, *++s)) >= 0) | |
1154 | vals[n] = (vals[n] * 10) + i; | |
1155 | if (*s == 'x' && !vals[n]) { | |
1156 | while ((i = stridx(hex, *++s)) >= 0) | |
1157 | vals[n] = (vals[n] * 0x10) + i; | |
1158 | } | |
1159 | if (++n == max_vals) | |
1160 | break; | |
1161 | if (*s == ',' || *s == ';') | |
1162 | ++s; | |
1163 | } | |
1164 | if (!*s) | |
1165 | return n; | |
1166 | } | |
1167 | return 0; /* zero = nothing matched */ | |
1168 | } | |
1169 | ||
84913882 | 1170 | extern int probe_ali14xx; |
84913882 | 1171 | extern int probe_umc8672; |
84913882 | 1172 | extern int probe_dtc2278; |
84913882 | 1173 | extern int probe_ht6560b; |
84913882 | 1174 | extern int probe_qd65xx; |
ade2daf9 | 1175 | extern int cmd640_vlb; |
1da177e4 LT |
1176 | |
1177 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1178 | ||
1179 | /* | |
1180 | * ide_setup() gets called VERY EARLY during initialization, | |
1181 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1182 | * | |
1c10e938 | 1183 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
1184 | */ |
1185 | static int __init ide_setup(char *s) | |
1186 | { | |
1187 | int i, vals[3]; | |
1188 | ide_hwif_t *hwif; | |
1189 | ide_drive_t *drive; | |
1190 | unsigned int hw, unit; | |
1191 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1192 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1193 | ||
1194 | ||
1195 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1196 | return 0; /* driver and not us */ | |
1197 | ||
1198 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1199 | return 0; | |
1200 | ||
1201 | printk(KERN_INFO "ide_setup: %s", s); | |
1202 | init_ide_data (); | |
1203 | ||
1204 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1205 | if (!strcmp(s, "ide=doubler")) { | |
1206 | extern int ide_doubler; | |
1207 | ||
1208 | printk(" : Enabled support for IDE doublers\n"); | |
1209 | ide_doubler = 1; | |
1210 | return 1; | |
1211 | } | |
1212 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1213 | ||
1214 | if (!strcmp(s, "ide=nodma")) { | |
1215 | printk(" : Prevented DMA\n"); | |
1216 | noautodma = 1; | |
c223701c | 1217 | goto obsolete_option; |
1da177e4 LT |
1218 | } |
1219 | ||
6d208b39 | 1220 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 LT |
1221 | if (!strcmp(s, "ide=reverse")) { |
1222 | ide_scan_direction = 1; | |
1223 | printk(" : Enabled support for IDE inverse scan order.\n"); | |
2952755c | 1224 | goto obsolete_option; |
1da177e4 | 1225 | } |
6d208b39 | 1226 | #endif |
1da177e4 | 1227 | |
e3a59b4d HR |
1228 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1229 | if (!strcmp(s, "ide=noacpi")) { | |
1230 | //printk(" : Disable IDE ACPI support.\n"); | |
1231 | ide_noacpi = 1; | |
1232 | return 1; | |
1233 | } | |
1234 | if (!strcmp(s, "ide=acpigtf")) { | |
1235 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1236 | ide_noacpitfs = 0; | |
1237 | return 1; | |
1238 | } | |
1239 | if (!strcmp(s, "ide=acpionboot")) { | |
1240 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1241 | ide_noacpionboot = 0; | |
1242 | return 1; | |
1243 | } | |
1244 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1245 | ||
1da177e4 LT |
1246 | /* |
1247 | * Look for drive options: "hdx=" | |
1248 | */ | |
1249 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1250 | const char *hd_words[] = { | |
c223701c | 1251 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 1252 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 1253 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1254 | unit = s[2] - 'a'; |
1255 | hw = unit / MAX_DRIVES; | |
1256 | unit = unit % MAX_DRIVES; | |
1257 | hwif = &ide_hwifs[hw]; | |
1258 | drive = &hwif->drives[unit]; | |
1259 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1260 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 1261 | goto obsolete_option; |
1da177e4 LT |
1262 | } |
1263 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1264 | case -1: /* "none" */ | |
1265 | case -2: /* "noprobe" */ | |
1266 | drive->noprobe = 1; | |
1267 | goto done; | |
1268 | case -3: /* "nowerr" */ | |
1269 | drive->bad_wstat = BAD_R_STAT; | |
1270 | hwif->noprobe = 0; | |
1271 | goto done; | |
1272 | case -4: /* "cdrom" */ | |
1273 | drive->present = 1; | |
1274 | drive->media = ide_cdrom; | |
1275 | /* an ATAPI device ignores DRDY */ | |
1276 | drive->ready_stat = 0; | |
1277 | hwif->noprobe = 0; | |
1278 | goto done; | |
c223701c BZ |
1279 | case -5: /* nodma */ |
1280 | drive->nodma = 1; | |
1281 | goto done; | |
1da177e4 LT |
1282 | case -6: /* "autotune" */ |
1283 | drive->autotune = IDE_TUNE_AUTO; | |
1284 | goto obsolete_option; | |
1285 | case -7: /* "noautotune" */ | |
1286 | drive->autotune = IDE_TUNE_NOAUTO; | |
1287 | goto obsolete_option; | |
36193484 JA |
1288 | case -11: /* noflush */ |
1289 | drive->noflush = 1; | |
1290 | goto done; | |
1da177e4 LT |
1291 | case -12: /* "remap" */ |
1292 | drive->remap_0_to_1 = 1; | |
1293 | goto done; | |
1294 | case -13: /* "remap63" */ | |
1295 | drive->sect0 = 63; | |
1296 | goto done; | |
1297 | case -14: /* "scsi" */ | |
1298 | drive->scsi = 1; | |
15220d9b | 1299 | goto obsolete_option; |
1da177e4 LT |
1300 | case 3: /* cyl,head,sect */ |
1301 | drive->media = ide_disk; | |
1302 | drive->ready_stat = READY_STAT; | |
1303 | drive->cyl = drive->bios_cyl = vals[0]; | |
1304 | drive->head = drive->bios_head = vals[1]; | |
1305 | drive->sect = drive->bios_sect = vals[2]; | |
1306 | drive->present = 1; | |
1307 | drive->forced_geom = 1; | |
1308 | hwif->noprobe = 0; | |
1309 | goto done; | |
1310 | default: | |
1311 | goto bad_option; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1316 | goto bad_option; | |
1317 | /* | |
1318 | * Look for bus speed option: "idebus=" | |
1319 | */ | |
1320 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1321 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1322 | goto bad_option; | |
1323 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1324 | idebus_parameter = vals[0]; | |
1325 | } else | |
1326 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1327 | goto done; | |
1328 | } | |
1329 | /* | |
1330 | * Look for interface options: "idex=" | |
1331 | */ | |
1332 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1333 | /* | |
1334 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1335 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1336 | */ | |
1337 | static const char *ide_words[] = { | |
b6209a90 | 1338 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1339 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1340 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1341 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 BZ |
1342 | |
1343 | hw_regs_t hwregs; | |
1344 | ||
1da177e4 LT |
1345 | hw = s[3] - '0'; |
1346 | hwif = &ide_hwifs[hw]; | |
1347 | i = match_parm(&s[4], ide_words, vals, 3); | |
1348 | ||
1349 | /* | |
1350 | * Cryptic check to ensure chipset not already set for hwif. | |
1351 | * Note: we can't depend on hwif->chipset here. | |
1352 | */ | |
1353 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1354 | /* chipset already specified */ | |
1355 | if (is_chipset_set[hw]) | |
1356 | goto bad_option; | |
1357 | if (i > -18 && i <= -11) { | |
1358 | /* these drivers are for "ide0=" only */ | |
1359 | if (hw != 0) | |
1360 | goto bad_hwif; | |
1361 | /* chipset already specified for 2nd port */ | |
1362 | if (is_chipset_set[hw+1]) | |
1363 | goto bad_option; | |
1364 | } | |
1365 | is_chipset_set[hw] = 1; | |
1366 | printk("\n"); | |
1367 | } | |
1368 | ||
1369 | switch (i) { | |
1370 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1371 | case -17: /* "ali14xx" */ | |
1372 | probe_ali14xx = 1; | |
9c027c68 | 1373 | goto obsolete_option; |
1da177e4 LT |
1374 | #endif |
1375 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1376 | case -16: /* "umc8672" */ | |
1377 | probe_umc8672 = 1; | |
9c027c68 | 1378 | goto obsolete_option; |
1da177e4 LT |
1379 | #endif |
1380 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1381 | case -15: /* "dtc2278" */ | |
1382 | probe_dtc2278 = 1; | |
9c027c68 | 1383 | goto obsolete_option; |
1da177e4 LT |
1384 | #endif |
1385 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1386 | case -14: /* "cmd640_vlb" */ | |
1da177e4 | 1387 | cmd640_vlb = 1; |
9c027c68 | 1388 | goto obsolete_option; |
1da177e4 LT |
1389 | #endif |
1390 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1391 | case -13: /* "ht6560b" */ | |
1392 | probe_ht6560b = 1; | |
9c027c68 | 1393 | goto obsolete_option; |
1da177e4 LT |
1394 | #endif |
1395 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1396 | case -12: /* "qd65xx" */ | |
1397 | probe_qd65xx = 1; | |
9c027c68 | 1398 | goto obsolete_option; |
1da177e4 LT |
1399 | #endif |
1400 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1401 | case -11: /* "four" drives on one set of ports */ | |
1402 | { | |
1403 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1404 | mate->drives[0].select.all ^= 0x20; | |
1405 | mate->drives[1].select.all ^= 0x20; | |
1406 | hwif->chipset = mate->chipset = ide_4drives; | |
1407 | mate->irq = hwif->irq; | |
1408 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1409 | hwif->mate = mate; |
1410 | mate->mate = hwif; | |
1411 | hwif->serialized = mate->serialized = 1; | |
1412 | goto obsolete_option; | |
1da177e4 LT |
1413 | } |
1414 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1415 | case -10: /* minus10 */ | |
1416 | case -9: /* minus9 */ | |
1417 | case -8: /* minus8 */ | |
1b516940 | 1418 | case -6: |
b6209a90 BZ |
1419 | case -4: |
1420 | case -3: | |
1da177e4 LT |
1421 | goto bad_option; |
1422 | case -7: /* ata66 */ | |
1423 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1424 | /* |
1425 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1426 | * cable detection is also overriden. | |
1427 | */ | |
1428 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1429 | goto obsolete_option; |
1430 | #else | |
1431 | goto bad_hwif; | |
1432 | #endif | |
1da177e4 LT |
1433 | case -5: /* "reset" */ |
1434 | hwif->reset = 1; | |
1435 | goto obsolete_option; | |
1da177e4 | 1436 | case -2: /* "serialize" */ |
1da177e4 LT |
1437 | hwif->mate = &ide_hwifs[hw^1]; |
1438 | hwif->mate->mate = hwif; | |
1439 | hwif->serialized = hwif->mate->serialized = 1; | |
1440 | goto obsolete_option; | |
1441 | ||
1442 | case -1: /* "noprobe" */ | |
1443 | hwif->noprobe = 1; | |
c53ea18d | 1444 | goto obsolete_option; |
1da177e4 LT |
1445 | |
1446 | case 1: /* base */ | |
1447 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1448 | case 2: /* base,ctl */ | |
1449 | vals[2] = 0; /* default irq = probe for it */ | |
1450 | case 3: /* base,ctl,irq */ | |
9239b333 BZ |
1451 | memset(&hwregs, 0, sizeof(hwregs)); |
1452 | ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq); | |
1453 | memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports)); | |
1da177e4 LT |
1454 | hwif->irq = vals[2]; |
1455 | hwif->noprobe = 0; | |
1456 | hwif->chipset = ide_forced; | |
1457 | goto obsolete_option; | |
1458 | ||
1459 | case 0: goto bad_option; | |
1460 | default: | |
1461 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1462 | return 1; | |
1463 | } | |
1464 | } | |
1465 | bad_option: | |
1466 | printk(" -- BAD OPTION\n"); | |
1467 | return 1; | |
1468 | obsolete_option: | |
1469 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1470 | return 1; | |
1471 | bad_hwif: | |
1472 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1473 | done: | |
1474 | printk("\n"); | |
1475 | return 1; | |
1476 | } | |
1477 | ||
1da177e4 LT |
1478 | EXPORT_SYMBOL(ide_lock); |
1479 | ||
8604affd BZ |
1480 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1481 | { | |
1482 | return 1; | |
1483 | } | |
1484 | ||
263756ec KS |
1485 | static char *media_string(ide_drive_t *drive) |
1486 | { | |
1487 | switch (drive->media) { | |
1488 | case ide_disk: | |
1489 | return "disk"; | |
1490 | case ide_cdrom: | |
1491 | return "cdrom"; | |
1492 | case ide_tape: | |
1493 | return "tape"; | |
1494 | case ide_floppy: | |
1495 | return "floppy"; | |
a7a832de DK |
1496 | case ide_optical: |
1497 | return "optical"; | |
263756ec KS |
1498 | default: |
1499 | return "UNKNOWN"; | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1504 | { | |
1505 | ide_drive_t *drive = to_ide_device(dev); | |
1506 | return sprintf(buf, "%s\n", media_string(drive)); | |
1507 | } | |
1508 | ||
1509 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1510 | { | |
1511 | ide_drive_t *drive = to_ide_device(dev); | |
1512 | return sprintf(buf, "%s\n", drive->name); | |
1513 | } | |
1514 | ||
1515 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1516 | { | |
1517 | ide_drive_t *drive = to_ide_device(dev); | |
1518 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1519 | } | |
1520 | ||
e11b9035 BZ |
1521 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1522 | char *buf) | |
1523 | { | |
1524 | ide_drive_t *drive = to_ide_device(dev); | |
1525 | return sprintf(buf, "%s\n", drive->id->model); | |
1526 | } | |
1527 | ||
1528 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1529 | char *buf) | |
1530 | { | |
1531 | ide_drive_t *drive = to_ide_device(dev); | |
1532 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1533 | } | |
1534 | ||
1535 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1536 | char *buf) | |
1537 | { | |
1538 | ide_drive_t *drive = to_ide_device(dev); | |
1539 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1540 | } | |
1541 | ||
263756ec KS |
1542 | static struct device_attribute ide_dev_attrs[] = { |
1543 | __ATTR_RO(media), | |
1544 | __ATTR_RO(drivename), | |
1545 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1546 | __ATTR_RO(model), |
1547 | __ATTR_RO(firmware), | |
1548 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1549 | __ATTR_NULL |
1550 | }; | |
1551 | ||
7eff2e7a | 1552 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1553 | { |
1554 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1555 | |
1556 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1557 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1558 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1559 | return 0; |
1560 | } | |
1561 | ||
4031bbe4 RK |
1562 | static int generic_ide_probe(struct device *dev) |
1563 | { | |
1564 | ide_drive_t *drive = to_ide_device(dev); | |
1565 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1566 | ||
1567 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1568 | } | |
1569 | ||
1570 | static int generic_ide_remove(struct device *dev) | |
1571 | { | |
1572 | ide_drive_t *drive = to_ide_device(dev); | |
1573 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1574 | ||
1575 | if (drv->remove) | |
1576 | drv->remove(drive); | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | static void generic_ide_shutdown(struct device *dev) | |
1582 | { | |
1583 | ide_drive_t *drive = to_ide_device(dev); | |
1584 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1585 | ||
1586 | if (dev->driver && drv->shutdown) | |
1587 | drv->shutdown(drive); | |
1588 | } | |
1589 | ||
1da177e4 LT |
1590 | struct bus_type ide_bus_type = { |
1591 | .name = "ide", | |
8604affd | 1592 | .match = ide_bus_match, |
263756ec | 1593 | .uevent = ide_uevent, |
4031bbe4 RK |
1594 | .probe = generic_ide_probe, |
1595 | .remove = generic_ide_remove, | |
1596 | .shutdown = generic_ide_shutdown, | |
263756ec | 1597 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1598 | .suspend = generic_ide_suspend, |
1599 | .resume = generic_ide_resume, | |
1600 | }; | |
1601 | ||
8604affd BZ |
1602 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1603 | ||
1da177e4 LT |
1604 | /* |
1605 | * This is gets invoked once during initialization, to set *everything* up | |
1606 | */ | |
1607 | static int __init ide_init(void) | |
1608 | { | |
349ae23f RD |
1609 | int ret; |
1610 | ||
eba8ff94 | 1611 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1612 | system_bus_speed = ide_system_bus_speed(); |
1613 | ||
537f06c5 BZ |
1614 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1615 | "for PIO modes%s\n", system_bus_speed, | |
1616 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1617 | ||
349ae23f RD |
1618 | ret = bus_register(&ide_bus_type); |
1619 | if (ret < 0) { | |
1620 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1621 | return ret; | |
1622 | } | |
1da177e4 LT |
1623 | |
1624 | init_ide_data(); | |
1625 | ||
5cbf79cd | 1626 | proc_ide_create(); |
1da177e4 | 1627 | |
1da177e4 LT |
1628 | return 0; |
1629 | } | |
1630 | ||
1631 | #ifdef MODULE | |
1632 | static char *options = NULL; | |
1633 | module_param(options, charp, 0); | |
1634 | MODULE_LICENSE("GPL"); | |
1635 | ||
1636 | static void __init parse_options (char *line) | |
1637 | { | |
1638 | char *next = line; | |
1639 | ||
1640 | if (line == NULL || !*line) | |
1641 | return; | |
1642 | while ((line = next) != NULL) { | |
1643 | if ((next = strchr(line,' ')) != NULL) | |
1644 | *next++ = 0; | |
1645 | if (!ide_setup(line)) | |
1646 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1647 | } | |
1648 | } | |
1649 | ||
fbd8ad30 | 1650 | int __init init_module (void) |
1da177e4 LT |
1651 | { |
1652 | parse_options(options); | |
1653 | return ide_init(); | |
1654 | } | |
1655 | ||
eb797227 | 1656 | void __exit cleanup_module (void) |
1da177e4 LT |
1657 | { |
1658 | int index; | |
1659 | ||
1660 | for (index = 0; index < MAX_HWIFS; ++index) | |
f82c2b17 | 1661 | ide_unregister(index, 0, 0); |
1da177e4 | 1662 | |
1da177e4 | 1663 | proc_ide_destroy(); |
1da177e4 LT |
1664 | |
1665 | bus_unregister(&ide_bus_type); | |
1666 | } | |
1667 | ||
1668 | #else /* !MODULE */ | |
1669 | ||
1670 | __setup("", ide_setup); | |
1671 | ||
1672 | module_init(ide_init); | |
1673 | ||
1674 | #endif /* MODULE */ |