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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 | ||
43514ed1 BZ |
108 | static void ide_port_init_devices_data(ide_hwif_t *); |
109 | ||
1da177e4 LT |
110 | /* |
111 | * Do not even *think* about calling this! | |
112 | */ | |
cbb010c1 | 113 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 | 114 | { |
1da177e4 LT |
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); | |
43514ed1 BZ |
133 | |
134 | ide_port_init_devices_data(hwif); | |
135 | } | |
136 | EXPORT_SYMBOL_GPL(ide_init_port_data); | |
137 | ||
138 | static void ide_port_init_devices_data(ide_hwif_t *hwif) | |
139 | { | |
140 | int unit; | |
141 | ||
1da177e4 LT |
142 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
143 | ide_drive_t *drive = &hwif->drives[unit]; | |
43514ed1 BZ |
144 | u8 j = (hwif->index * MAX_DRIVES) + unit; |
145 | ||
146 | memset(drive, 0, sizeof(*drive)); | |
1da177e4 LT |
147 | |
148 | drive->media = ide_disk; | |
149 | drive->select.all = (unit<<4)|0xa0; | |
150 | drive->hwif = hwif; | |
151 | drive->ctl = 0x08; | |
152 | drive->ready_stat = READY_STAT; | |
153 | drive->bad_wstat = BAD_W_STAT; | |
154 | drive->special.b.recalibrate = 1; | |
155 | drive->special.b.set_geometry = 1; | |
156 | drive->name[0] = 'h'; | |
157 | drive->name[1] = 'd'; | |
43514ed1 | 158 | drive->name[2] = 'a' + j; |
1da177e4 | 159 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; |
43514ed1 | 160 | |
1da177e4 | 161 | INIT_LIST_HEAD(&drive->list); |
f36d4024 | 162 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
163 | } |
164 | } | |
43514ed1 | 165 | |
1da177e4 LT |
166 | |
167 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
168 | { | |
169 | hw_regs_t hw; | |
170 | ||
171 | memset(&hw, 0, sizeof(hw_regs_t)); | |
172 | ||
173 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
174 | ||
1da177e4 LT |
175 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
176 | ||
177 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; | |
178 | #ifdef CONFIG_BLK_DEV_HD | |
179 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) | |
180 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ | |
181 | #endif | |
182 | } | |
183 | ||
1da177e4 LT |
184 | /* |
185 | * init_ide_data() sets reasonable default values into all fields | |
186 | * of all instances of the hwifs and drives, but only on the first call. | |
187 | * Subsequent calls have no effect (they don't wipe out anything). | |
188 | * | |
189 | * This routine is normally called at driver initialization time, | |
190 | * but may also be called MUCH earlier during kernel "command-line" | |
191 | * parameter processing. As such, we cannot depend on any other parts | |
192 | * of the kernel (such as memory allocation) to be functioning yet. | |
193 | * | |
194 | * This is too bad, as otherwise we could dynamically allocate the | |
195 | * ide_drive_t structs as needed, rather than always consuming memory | |
196 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
197 | * | |
198 | * FIXME: We should stuff the setup data into __init and copy the | |
199 | * relevant hwifs/allocate them properly during boot. | |
200 | */ | |
201 | #define MAGIC_COOKIE 0x12345678 | |
202 | static void __init init_ide_data (void) | |
203 | { | |
204 | ide_hwif_t *hwif; | |
205 | unsigned int index; | |
206 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
207 | ||
208 | if (magic_cookie != MAGIC_COOKIE) | |
209 | return; /* already initialized */ | |
210 | magic_cookie = 0; | |
211 | ||
212 | /* Initialise all interface structures */ | |
213 | for (index = 0; index < MAX_HWIFS; ++index) { | |
214 | hwif = &ide_hwifs[index]; | |
cbb010c1 | 215 | ide_init_port_data(hwif, index); |
1da177e4 LT |
216 | init_hwif_default(hwif, index); |
217 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
9239b333 | 218 | hwif->irq = |
1da177e4 LT |
219 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
220 | #endif | |
221 | } | |
1da177e4 LT |
222 | } |
223 | ||
224 | /** | |
225 | * ide_system_bus_speed - guess bus speed | |
226 | * | |
227 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
228 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
229 | * The default is 40 for known PCI systems, 50 otherwise. | |
230 | * The "idebus=xx" parameter can be used to override this value. | |
231 | * The actual value to be used is computed/displayed the first time | |
232 | * through. Drivers should only use this as a last resort. | |
233 | * | |
234 | * Returns a guessed speed in MHz. | |
235 | */ | |
236 | ||
237 | static int ide_system_bus_speed(void) | |
238 | { | |
239 | #ifdef CONFIG_PCI | |
240 | static struct pci_device_id pci_default[] = { | |
241 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
242 | { } | |
243 | }; | |
244 | #else | |
245 | #define pci_default 0 | |
246 | #endif /* CONFIG_PCI */ | |
247 | ||
537f06c5 BZ |
248 | /* user supplied value */ |
249 | if (idebus_parameter) | |
250 | return idebus_parameter; | |
251 | ||
252 | /* safe default value for PCI or VESA and PCI*/ | |
253 | return pci_dev_present(pci_default) ? 33 : 50; | |
1da177e4 LT |
254 | } |
255 | ||
baa8f3e9 BZ |
256 | ide_hwif_t * ide_find_port(unsigned long base) |
257 | { | |
258 | ide_hwif_t *hwif; | |
259 | int i; | |
260 | ||
261 | for (i = 0; i < MAX_HWIFS; i++) { | |
262 | hwif = &ide_hwifs[i]; | |
263 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
264 | goto found; | |
265 | } | |
266 | ||
267 | for (i = 0; i < MAX_HWIFS; i++) { | |
268 | hwif = &ide_hwifs[i]; | |
2625cd52 | 269 | if (hwif->chipset == ide_unknown) |
baa8f3e9 BZ |
270 | goto found; |
271 | } | |
272 | ||
273 | hwif = NULL; | |
274 | found: | |
275 | return hwif; | |
276 | } | |
277 | ||
278 | EXPORT_SYMBOL_GPL(ide_find_port); | |
279 | ||
1da177e4 LT |
280 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
281 | unsigned long addr, int num) | |
282 | { | |
283 | struct resource *res = request_region(addr, num, hwif->name); | |
284 | ||
285 | if (!res) | |
286 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
287 | hwif->name, addr, addr+num-1); | |
288 | return res; | |
289 | } | |
290 | ||
291 | /** | |
292 | * ide_hwif_request_regions - request resources for IDE | |
293 | * @hwif: interface to use | |
294 | * | |
295 | * Requests all the needed resources for an interface. | |
296 | * Right now core IDE code does this work which is deeply wrong. | |
297 | * MMIO leaves it to the controller driver, | |
298 | * PIO will migrate this way over time. | |
299 | */ | |
300 | ||
301 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
302 | { | |
303 | unsigned long addr; | |
304 | unsigned int i; | |
305 | ||
2ad1e558 | 306 | if (hwif->mmio) |
1da177e4 | 307 | return 0; |
1da177e4 LT |
308 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
309 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
310 | goto control_region_busy; | |
311 | hwif->straight8 = 0; | |
312 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
313 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
314 | if (!hwif_request_region(hwif, addr, 8)) | |
315 | goto data_region_busy; | |
316 | hwif->straight8 = 1; | |
317 | return 0; | |
318 | } | |
319 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
320 | addr = hwif->io_ports[i]; | |
321 | if (!hwif_request_region(hwif, addr, 1)) { | |
322 | while (--i) | |
323 | release_region(addr, 1); | |
324 | goto data_region_busy; | |
325 | } | |
326 | } | |
327 | return 0; | |
328 | ||
329 | data_region_busy: | |
330 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
331 | if (addr) | |
332 | release_region(addr, 1); | |
333 | control_region_busy: | |
334 | /* If any errors are return, we drop the hwif interface. */ | |
335 | return -EBUSY; | |
336 | } | |
337 | ||
338 | /** | |
339 | * ide_hwif_release_regions - free IDE resources | |
340 | * | |
341 | * Note that we only release the standard ports, | |
342 | * and do not even try to handle any extra ports | |
343 | * allocated for weird IDE interface chipsets. | |
344 | * | |
345 | * Note also that we don't yet handle mmio resources here. More | |
346 | * importantly our caller should be doing this so we need to | |
347 | * restructure this as a helper function for drivers. | |
348 | */ | |
349 | ||
350 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
351 | { | |
352 | u32 i = 0; | |
353 | ||
2ad1e558 | 354 | if (hwif->mmio) |
1da177e4 LT |
355 | return; |
356 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
357 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
358 | if (hwif->straight8) { | |
359 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
360 | return; | |
361 | } | |
362 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
363 | if (hwif->io_ports[i]) | |
364 | release_region(hwif->io_ports[i], 1); | |
365 | } | |
366 | ||
367 | /** | |
368 | * ide_hwif_restore - restore hwif to template | |
369 | * @hwif: hwif to update | |
370 | * @tmp_hwif: template | |
371 | * | |
020e322d | 372 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
373 | * from the template. |
374 | */ | |
375 | ||
376 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
377 | { | |
378 | hwif->hwgroup = tmp_hwif->hwgroup; | |
379 | ||
380 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
381 | ||
382 | hwif->proc = tmp_hwif->proc; | |
383 | ||
384 | hwif->major = tmp_hwif->major; | |
385 | hwif->straight8 = tmp_hwif->straight8; | |
386 | hwif->bus_state = tmp_hwif->bus_state; | |
387 | ||
6a824c92 BZ |
388 | hwif->host_flags = tmp_hwif->host_flags; |
389 | ||
4099d143 BZ |
390 | hwif->pio_mask = tmp_hwif->pio_mask; |
391 | ||
1da177e4 LT |
392 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
393 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
394 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
395 | ||
49521f97 BZ |
396 | hwif->cbl = tmp_hwif->cbl; |
397 | ||
1da177e4 LT |
398 | hwif->chipset = tmp_hwif->chipset; |
399 | hwif->hold = tmp_hwif->hold; | |
400 | ||
36501650 BZ |
401 | hwif->dev = tmp_hwif->dev; |
402 | ||
1da177e4 | 403 | #ifdef CONFIG_BLK_DEV_IDEPCI |
1da177e4 LT |
404 | hwif->cds = tmp_hwif->cds; |
405 | #endif | |
406 | ||
26bcb879 | 407 | hwif->set_pio_mode = tmp_hwif->set_pio_mode; |
88b2b32b | 408 | hwif->set_dma_mode = tmp_hwif->set_dma_mode; |
b4e44369 | 409 | hwif->mdma_filter = tmp_hwif->mdma_filter; |
2d5eaa6d | 410 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
411 | hwif->selectproc = tmp_hwif->selectproc; |
412 | hwif->reset_poll = tmp_hwif->reset_poll; | |
413 | hwif->pre_reset = tmp_hwif->pre_reset; | |
414 | hwif->resetproc = tmp_hwif->resetproc; | |
1da177e4 LT |
415 | hwif->maskproc = tmp_hwif->maskproc; |
416 | hwif->quirkproc = tmp_hwif->quirkproc; | |
417 | hwif->busproc = tmp_hwif->busproc; | |
418 | ||
419 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
420 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
421 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
422 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
423 | ||
15ce926a | 424 | hwif->dma_host_set = tmp_hwif->dma_host_set; |
1da177e4 LT |
425 | hwif->dma_setup = tmp_hwif->dma_setup; |
426 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
427 | hwif->dma_start = tmp_hwif->dma_start; | |
428 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
1da177e4 | 429 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 430 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
841d2a9b | 431 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 432 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
433 | |
434 | hwif->OUTB = tmp_hwif->OUTB; | |
435 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
436 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
437 | hwif->OUTSW = tmp_hwif->OUTSW; |
438 | hwif->OUTSL = tmp_hwif->OUTSL; | |
439 | ||
440 | hwif->INB = tmp_hwif->INB; | |
441 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
442 | hwif->INSW = tmp_hwif->INSW; |
443 | hwif->INSL = tmp_hwif->INSL; | |
444 | ||
445 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
446 | ||
447 | hwif->mmio = tmp_hwif->mmio; | |
448 | hwif->rqsize = tmp_hwif->rqsize; | |
1da177e4 LT |
449 | |
450 | #ifndef CONFIG_BLK_DEV_IDECS | |
451 | hwif->irq = tmp_hwif->irq; | |
452 | #endif | |
453 | ||
454 | hwif->dma_base = tmp_hwif->dma_base; | |
1da177e4 LT |
455 | hwif->dma_command = tmp_hwif->dma_command; |
456 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
457 | hwif->dma_status = tmp_hwif->dma_status; | |
458 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
459 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
460 | ||
1da177e4 LT |
461 | hwif->config_data = tmp_hwif->config_data; |
462 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
463 | hwif->extra_base = tmp_hwif->extra_base; |
464 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
465 | |
466 | hwif->hwif_data = tmp_hwif->hwif_data; | |
467 | } | |
468 | ||
fbd13088 | 469 | void ide_remove_port_from_hwgroup(ide_hwif_t *hwif) |
96e5ad30 BZ |
470 | { |
471 | ide_hwgroup_t *hwgroup = hwif->hwgroup; | |
472 | ||
473 | spin_lock_irq(&ide_lock); | |
474 | /* | |
475 | * Remove us from the hwgroup, and free | |
476 | * the hwgroup if we were the only member | |
477 | */ | |
478 | if (hwif->next == hwif) { | |
479 | BUG_ON(hwgroup->hwif != hwif); | |
480 | kfree(hwgroup); | |
481 | } else { | |
482 | /* There is another interface in hwgroup. | |
483 | * Unlink us, and set hwgroup->drive and ->hwif to | |
484 | * something sane. | |
485 | */ | |
486 | ide_hwif_t *g = hwgroup->hwif; | |
487 | ||
488 | while (g->next != hwif) | |
489 | g = g->next; | |
490 | g->next = hwif->next; | |
491 | if (hwgroup->hwif == hwif) { | |
492 | /* Chose a random hwif for hwgroup->hwif. | |
493 | * It's guaranteed that there are no drives | |
494 | * left in the hwgroup. | |
495 | */ | |
496 | BUG_ON(hwgroup->drive != NULL); | |
497 | hwgroup->hwif = g; | |
498 | } | |
499 | BUG_ON(hwgroup->hwif == hwif); | |
500 | } | |
501 | spin_unlock_irq(&ide_lock); | |
502 | } | |
503 | ||
71bf9f6f BZ |
504 | /* Called with ide_lock held. */ |
505 | static void ide_port_unregister_devices(ide_hwif_t *hwif) | |
506 | { | |
507 | int i; | |
508 | ||
509 | for (i = 0; i < MAX_DRIVES; i++) { | |
510 | ide_drive_t *drive = &hwif->drives[i]; | |
511 | ||
512 | if (drive->present) { | |
513 | spin_unlock_irq(&ide_lock); | |
514 | device_unregister(&drive->gendev); | |
515 | wait_for_completion(&drive->gendev_rel_comp); | |
516 | spin_lock_irq(&ide_lock); | |
517 | } | |
518 | } | |
519 | } | |
520 | ||
1da177e4 | 521 | /** |
020e322d | 522 | * ide_unregister - free an IDE interface |
1da177e4 | 523 | * @index: index of interface (will change soon to a pointer) |
f82c2b17 BZ |
524 | * @init_default: init default hwif flag |
525 | * @restore: restore hwif flag | |
1da177e4 LT |
526 | * |
527 | * Perform the final unregister of an IDE interface. At the moment | |
528 | * we don't refcount interfaces so this will also get split up. | |
529 | * | |
530 | * Locking: | |
531 | * The caller must not hold the IDE locks | |
532 | * The drive present/vanishing is not yet properly locked | |
533 | * Take care with the callbacks. These have been split to avoid | |
534 | * deadlocking the IDE layer. The shutdown callback is called | |
535 | * before we take the lock and free resources. It is up to the | |
536 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
537 | * the interface will not be reopened (present/vanishing locking |
538 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
539 | * call the cleanup callback with the ide locks held. |
540 | * | |
541 | * Unregister restores the hwif structures to the default state. | |
542 | * This is raving bonkers. | |
543 | */ | |
544 | ||
f82c2b17 | 545 | void ide_unregister(unsigned int index, int init_default, int restore) |
1da177e4 | 546 | { |
1da177e4 | 547 | ide_hwif_t *hwif, *g; |
ef29888e | 548 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 549 | ide_hwgroup_t *hwgroup; |
71bf9f6f | 550 | int irq_count = 0; |
1da177e4 LT |
551 | |
552 | BUG_ON(index >= MAX_HWIFS); | |
553 | ||
554 | BUG_ON(in_interrupt()); | |
555 | BUG_ON(irqs_disabled()); | |
ef29888e | 556 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
557 | spin_lock_irq(&ide_lock); |
558 | hwif = &ide_hwifs[index]; | |
559 | if (!hwif->present) | |
560 | goto abort; | |
71bf9f6f | 561 | ide_port_unregister_devices(hwif); |
1da177e4 LT |
562 | hwif->present = 0; |
563 | ||
564 | spin_unlock_irq(&ide_lock); | |
565 | ||
5cbf79cd | 566 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
567 | |
568 | hwgroup = hwif->hwgroup; | |
569 | /* | |
570 | * free the irq if we were the only hwif using it | |
571 | */ | |
572 | g = hwgroup->hwif; | |
573 | do { | |
574 | if (g->irq == hwif->irq) | |
575 | ++irq_count; | |
576 | g = g->next; | |
577 | } while (g != hwgroup->hwif); | |
578 | if (irq_count == 1) | |
579 | free_irq(hwif->irq, hwgroup); | |
580 | ||
96e5ad30 | 581 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 582 | |
1da177e4 | 583 | device_unregister(&hwif->gendev); |
f36d4024 | 584 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
585 | |
586 | /* | |
587 | * Remove us from the kernel's knowledge | |
588 | */ | |
589 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
590 | kfree(hwif->sg_table); | |
591 | unregister_blkdev(hwif->major, hwif->name); | |
592 | spin_lock_irq(&ide_lock); | |
593 | ||
594 | if (hwif->dma_base) { | |
595 | (void) ide_release_dma(hwif); | |
596 | ||
597 | hwif->dma_base = 0; | |
1da177e4 LT |
598 | hwif->dma_command = 0; |
599 | hwif->dma_vendor1 = 0; | |
600 | hwif->dma_status = 0; | |
601 | hwif->dma_vendor3 = 0; | |
602 | hwif->dma_prdtable = 0; | |
020e322d SS |
603 | |
604 | hwif->extra_base = 0; | |
605 | hwif->extra_ports = 0; | |
1da177e4 LT |
606 | } |
607 | ||
7cba97f1 BZ |
608 | ide_hwif_release_regions(hwif); |
609 | ||
1da177e4 LT |
610 | /* copy original settings */ |
611 | tmp_hwif = *hwif; | |
612 | ||
613 | /* restore hwif data to pristine status */ | |
cbb010c1 | 614 | ide_init_port_data(hwif, index); |
1da177e4 | 615 | |
f82c2b17 BZ |
616 | if (init_default) |
617 | init_hwif_default(hwif, index); | |
618 | ||
619 | if (restore) | |
620 | ide_hwif_restore(hwif, &tmp_hwif); | |
1da177e4 LT |
621 | |
622 | abort: | |
623 | spin_unlock_irq(&ide_lock); | |
ef29888e | 624 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
625 | } |
626 | ||
627 | EXPORT_SYMBOL(ide_unregister); | |
628 | ||
57c802e8 BZ |
629 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
630 | { | |
631 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
632 | hwif->irq = hw->irq; | |
633 | hwif->noprobe = 0; | |
634 | hwif->chipset = hw->chipset; | |
635 | hwif->gendev.parent = hw->dev; | |
636 | hwif->ack_intr = hw->ack_intr; | |
637 | } | |
638 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
639 | ||
1da177e4 | 640 | /** |
fd9bb539 | 641 | * ide_register_hw - register IDE interface |
1da177e4 | 642 | * @hw: hardware registers |
f01393e4 | 643 | * @quirkproc: quirkproc function |
1da177e4 | 644 | * @hwifp: pointer to returned hwif |
1da177e4 LT |
645 | * |
646 | * Register an IDE interface, specifying exactly the registers etc. | |
1da177e4 LT |
647 | * |
648 | * Returns -1 on error. | |
649 | */ | |
650 | ||
f01393e4 | 651 | int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *), |
cbb010c1 | 652 | ide_hwif_t **hwifp) |
1da177e4 LT |
653 | { |
654 | int index, retry = 1; | |
655 | ide_hwif_t *hwif; | |
cbb010c1 | 656 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
795d74b5 | 657 | |
1da177e4 | 658 | do { |
4f0eee4d | 659 | hwif = ide_find_port(hw->io_ports[IDE_DATA_OFFSET]); |
9e016a71 BZ |
660 | if (hwif) |
661 | goto found; | |
1da177e4 | 662 | for (index = 0; index < MAX_HWIFS; index++) |
f82c2b17 | 663 | ide_unregister(index, 1, 1); |
1da177e4 LT |
664 | } while (retry--); |
665 | return -1; | |
666 | found: | |
0c6025d4 | 667 | index = hwif->index; |
1da177e4 | 668 | if (hwif->present) |
f82c2b17 | 669 | ide_unregister(index, 0, 1); |
ead741df | 670 | else if (!hwif->hold) |
cbb010c1 | 671 | ide_init_port_data(hwif, index); |
57c802e8 BZ |
672 | |
673 | ide_init_port_hw(hwif, hw); | |
f01393e4 | 674 | hwif->quirkproc = quirkproc; |
1da177e4 | 675 | |
cbb010c1 | 676 | idx[0] = index; |
8447d9d5 | 677 | |
c413b9b9 | 678 | ide_device_add(idx, NULL); |
1da177e4 LT |
679 | |
680 | if (hwifp) | |
681 | *hwifp = hwif; | |
682 | ||
cbb010c1 | 683 | return hwif->present ? index : -1; |
1da177e4 LT |
684 | } |
685 | ||
1da177e4 LT |
686 | EXPORT_SYMBOL(ide_register_hw); |
687 | ||
688 | /* | |
689 | * Locks for IDE setting functionality | |
690 | */ | |
691 | ||
f9383c42 | 692 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 693 | |
f9383c42 | 694 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 695 | |
1da177e4 LT |
696 | /** |
697 | * ide_spin_wait_hwgroup - wait for group | |
698 | * @drive: drive in the group | |
699 | * | |
700 | * Wait for an IDE device group to go non busy and then return | |
701 | * holding the ide_lock which guards the hwgroup->busy status | |
702 | * and right to use it. | |
703 | */ | |
704 | ||
705 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
706 | { | |
707 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
708 | unsigned long timeout = jiffies + (3 * HZ); | |
709 | ||
710 | spin_lock_irq(&ide_lock); | |
711 | ||
712 | while (hwgroup->busy) { | |
713 | unsigned long lflags; | |
714 | spin_unlock_irq(&ide_lock); | |
715 | local_irq_set(lflags); | |
716 | if (time_after(jiffies, timeout)) { | |
717 | local_irq_restore(lflags); | |
718 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
719 | return -EBUSY; | |
720 | } | |
721 | local_irq_restore(lflags); | |
722 | spin_lock_irq(&ide_lock); | |
723 | } | |
724 | return 0; | |
725 | } | |
726 | ||
727 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
728 | ||
7662d046 | 729 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 730 | { |
1497943e BZ |
731 | if (drive->no_io_32bit) |
732 | return -EPERM; | |
733 | ||
734 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
735 | return -EINVAL; | |
736 | ||
644a9d76 BZ |
737 | if (ide_spin_wait_hwgroup(drive)) |
738 | return -EBUSY; | |
739 | ||
1da177e4 | 740 | drive->io_32bit = arg; |
644a9d76 BZ |
741 | |
742 | spin_unlock_irq(&ide_lock); | |
743 | ||
1da177e4 LT |
744 | return 0; |
745 | } | |
746 | ||
1497943e BZ |
747 | static int set_ksettings(ide_drive_t *drive, int arg) |
748 | { | |
749 | if (arg < 0 || arg > 1) | |
750 | return -EINVAL; | |
751 | ||
752 | if (ide_spin_wait_hwgroup(drive)) | |
753 | return -EBUSY; | |
754 | drive->keep_settings = arg; | |
755 | spin_unlock_irq(&ide_lock); | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
7662d046 | 760 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
761 | { |
762 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
763 | ide_hwif_t *hwif = drive->hwif; |
764 | int err = -EPERM; | |
765 | ||
1497943e BZ |
766 | if (arg < 0 || arg > 1) |
767 | return -EINVAL; | |
768 | ||
1da177e4 | 769 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
770 | goto out; |
771 | ||
15ce926a | 772 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
773 | goto out; |
774 | ||
775 | err = -EBUSY; | |
776 | if (ide_spin_wait_hwgroup(drive)) | |
777 | goto out; | |
778 | /* | |
779 | * set ->busy flag, unlock and let it ride | |
780 | */ | |
781 | hwif->hwgroup->busy = 1; | |
782 | spin_unlock_irq(&ide_lock); | |
783 | ||
784 | err = 0; | |
785 | ||
1da177e4 | 786 | if (arg) { |
23b1bd45 | 787 | if (ide_set_dma(drive)) |
87996204 | 788 | err = -EIO; |
7469aaf6 BZ |
789 | } else |
790 | ide_dma_off(drive); | |
87996204 BZ |
791 | |
792 | /* | |
793 | * lock, clear ->busy flag and unlock before leaving | |
794 | */ | |
795 | spin_lock_irq(&ide_lock); | |
796 | hwif->hwgroup->busy = 0; | |
797 | spin_unlock_irq(&ide_lock); | |
798 | out: | |
799 | return err; | |
1da177e4 | 800 | #else |
1497943e BZ |
801 | if (arg < 0 || arg > 1) |
802 | return -EINVAL; | |
803 | ||
1da177e4 LT |
804 | return -EPERM; |
805 | #endif | |
806 | } | |
807 | ||
7662d046 | 808 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
809 | { |
810 | struct request rq; | |
811 | ||
1497943e BZ |
812 | if (arg < 0 || arg > 255) |
813 | return -EINVAL; | |
814 | ||
26bcb879 | 815 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 816 | return -ENOSYS; |
26bcb879 | 817 | |
1da177e4 LT |
818 | if (drive->special.b.set_tune) |
819 | return -EBUSY; | |
145b75e9 | 820 | |
1da177e4 | 821 | ide_init_drive_cmd(&rq); |
852738f3 | 822 | rq.cmd_type = REQ_TYPE_ATA_TASKFILE; |
145b75e9 | 823 | |
1da177e4 LT |
824 | drive->tune_req = (u8) arg; |
825 | drive->special.b.set_tune = 1; | |
826 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
827 | return 0; | |
828 | } | |
829 | ||
1497943e BZ |
830 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
831 | { | |
832 | if (drive->no_unmask) | |
833 | return -EPERM; | |
834 | ||
835 | if (arg < 0 || arg > 1) | |
836 | return -EINVAL; | |
837 | ||
838 | if (ide_spin_wait_hwgroup(drive)) | |
839 | return -EBUSY; | |
840 | drive->unmask = arg; | |
841 | spin_unlock_irq(&ide_lock); | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
1da177e4 LT |
846 | /** |
847 | * system_bus_clock - clock guess | |
848 | * | |
849 | * External version of the bus clock guess used by very old IDE drivers | |
850 | * for things like VLB timings. Should not be used. | |
851 | */ | |
852 | ||
853 | int system_bus_clock (void) | |
854 | { | |
537f06c5 | 855 | return system_bus_speed; |
1da177e4 LT |
856 | } |
857 | ||
858 | EXPORT_SYMBOL(system_bus_clock); | |
859 | ||
b887d2e6 | 860 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
861 | { |
862 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 863 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
864 | struct request rq; |
865 | struct request_pm_state rqpm; | |
866 | ide_task_t args; | |
5e32132b | 867 | int ret; |
1da177e4 | 868 | |
e3a59b4d HR |
869 | /* Call ACPI _GTM only once */ |
870 | if (!(drive->dn % 2)) | |
871 | ide_acpi_get_timing(hwif); | |
872 | ||
1da177e4 LT |
873 | memset(&rq, 0, sizeof(rq)); |
874 | memset(&rqpm, 0, sizeof(rqpm)); | |
875 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 876 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 877 | rq.special = &args; |
c00895ab | 878 | rq.data = &rqpm; |
1da177e4 | 879 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
880 | if (mesg.event == PM_EVENT_PRETHAW) |
881 | mesg.event = PM_EVENT_FREEZE; | |
882 | rqpm.pm_state = mesg.event; | |
1da177e4 | 883 | |
5e32132b SL |
884 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
885 | /* only call ACPI _PS3 after both drivers are suspended */ | |
886 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
887 | && hwif->drives[1].present) | |
888 | || !hwif->drives[0].present | |
889 | || !hwif->drives[1].present)) | |
890 | ide_acpi_set_state(hwif, 0); | |
891 | return ret; | |
1da177e4 LT |
892 | } |
893 | ||
894 | static int generic_ide_resume(struct device *dev) | |
895 | { | |
896 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 897 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
898 | struct request rq; |
899 | struct request_pm_state rqpm; | |
900 | ide_task_t args; | |
0d2157f7 | 901 | int err; |
1da177e4 | 902 | |
e3a59b4d | 903 | /* Call ACPI _STM only once */ |
5e32132b SL |
904 | if (!(drive->dn % 2)) { |
905 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 906 | ide_acpi_push_timing(hwif); |
5e32132b | 907 | } |
e3a59b4d HR |
908 | |
909 | ide_acpi_exec_tfs(drive); | |
910 | ||
1da177e4 LT |
911 | memset(&rq, 0, sizeof(rq)); |
912 | memset(&rqpm, 0, sizeof(rqpm)); | |
913 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 914 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 915 | rq.special = &args; |
c00895ab | 916 | rq.data = &rqpm; |
1da177e4 | 917 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 918 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 919 | |
0d2157f7 LT |
920 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
921 | ||
ce9b2b0a RW |
922 | if (err == 0 && dev->driver) { |
923 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
924 | ||
925 | if (drv->resume) | |
926 | drv->resume(drive); | |
927 | } | |
0d2157f7 LT |
928 | |
929 | return err; | |
1da177e4 LT |
930 | } |
931 | ||
932 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
933 | unsigned int cmd, unsigned long arg) | |
934 | { | |
1497943e | 935 | unsigned long flags; |
1da177e4 | 936 | ide_driver_t *drv; |
1da177e4 | 937 | void __user *p = (void __user *)arg; |
1985026d | 938 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 939 | u8 *val; |
1da177e4 | 940 | |
1497943e BZ |
941 | switch (cmd) { |
942 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
943 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
944 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
945 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
946 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
947 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
948 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
949 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
950 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 951 | } |
1da177e4 LT |
952 | |
953 | switch (cmd) { | |
1da177e4 LT |
954 | case HDIO_OBSOLETE_IDENTITY: |
955 | case HDIO_GET_IDENTITY: | |
956 | if (bdev != bdev->bd_contains) | |
957 | return -EINVAL; | |
958 | if (drive->id_read == 0) | |
959 | return -ENOMSG; | |
960 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
961 | return -EFAULT; | |
962 | return 0; | |
963 | ||
964 | case HDIO_GET_NICE: | |
965 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
966 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
92b83c8f | 967 | drive->nice1 << IDE_NICE_1, |
1da177e4 | 968 | (long __user *) arg); |
1da177e4 LT |
969 | #ifdef CONFIG_IDE_TASK_IOCTL |
970 | case HDIO_DRIVE_TASKFILE: | |
971 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
972 | return -EACCES; | |
973 | switch(drive->media) { | |
974 | case ide_disk: | |
975 | return ide_taskfile_ioctl(drive, cmd, arg); | |
976 | default: | |
977 | return -ENOMSG; | |
978 | } | |
979 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
980 | ||
981 | case HDIO_DRIVE_CMD: | |
982 | if (!capable(CAP_SYS_RAWIO)) | |
983 | return -EACCES; | |
984 | return ide_cmd_ioctl(drive, cmd, arg); | |
985 | ||
986 | case HDIO_DRIVE_TASK: | |
987 | if (!capable(CAP_SYS_RAWIO)) | |
988 | return -EACCES; | |
989 | return ide_task_ioctl(drive, cmd, arg); | |
990 | ||
991 | case HDIO_SCAN_HWIF: | |
992 | { | |
993 | hw_regs_t hw; | |
994 | int args[3]; | |
995 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
996 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
997 | return -EFAULT; | |
998 | memset(&hw, 0, sizeof(hw)); | |
999 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
1000 | (unsigned long) args[1], NULL); | |
1001 | hw.irq = args[2]; | |
cbb010c1 | 1002 | if (ide_register_hw(&hw, NULL, NULL) == -1) |
1da177e4 LT |
1003 | return -EIO; |
1004 | return 0; | |
1005 | } | |
1006 | case HDIO_UNREGISTER_HWIF: | |
1007 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1008 | /* (arg > MAX_HWIFS) checked in function */ | |
f82c2b17 | 1009 | ide_unregister(arg, 1, 1); |
1da177e4 LT |
1010 | return 0; |
1011 | case HDIO_SET_NICE: | |
1012 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1013 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1014 | return -EPERM; | |
1015 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1016 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1017 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1018 | drive->dsc_overlap = 0; | |
1019 | return -EPERM; | |
1020 | } | |
1021 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1022 | return 0; | |
1023 | case HDIO_DRIVE_RESET: | |
dbecebca BZ |
1024 | if (!capable(CAP_SYS_ADMIN)) |
1025 | return -EACCES; | |
1026 | ||
1da177e4 LT |
1027 | /* |
1028 | * Abort the current command on the | |
1029 | * group if there is one, taking | |
1030 | * care not to allow anything else | |
1031 | * to be queued and to die on the | |
1032 | * spot if we miss one somehow | |
1033 | */ | |
1034 | ||
1035 | spin_lock_irqsave(&ide_lock, flags); | |
1036 | ||
913759ac AC |
1037 | if (HWGROUP(drive)->resetting) { |
1038 | spin_unlock_irqrestore(&ide_lock, flags); | |
1039 | return -EBUSY; | |
1040 | } | |
1041 | ||
1da177e4 LT |
1042 | ide_abort(drive, "drive reset"); |
1043 | ||
125e1874 | 1044 | BUG_ON(HWGROUP(drive)->handler); |
dbecebca | 1045 | |
1da177e4 LT |
1046 | /* Ensure nothing gets queued after we |
1047 | drop the lock. Reset will clear the busy */ | |
dbecebca | 1048 | |
1da177e4 LT |
1049 | HWGROUP(drive)->busy = 1; |
1050 | spin_unlock_irqrestore(&ide_lock, flags); | |
1051 | (void) ide_do_reset(drive); | |
1052 | ||
1053 | return 0; | |
1da177e4 LT |
1054 | case HDIO_GET_BUSSTATE: |
1055 | if (!capable(CAP_SYS_ADMIN)) | |
1056 | return -EACCES; | |
1057 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1058 | return -EFAULT; | |
1059 | return 0; | |
1060 | ||
1061 | case HDIO_SET_BUSSTATE: | |
1062 | if (!capable(CAP_SYS_ADMIN)) | |
1063 | return -EACCES; | |
1064 | if (HWIF(drive)->busproc) | |
1065 | return HWIF(drive)->busproc(drive, (int)arg); | |
1066 | return -EOPNOTSUPP; | |
1067 | default: | |
1068 | return -EINVAL; | |
1069 | } | |
1497943e BZ |
1070 | |
1071 | read_val: | |
f9383c42 | 1072 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1073 | spin_lock_irqsave(&ide_lock, flags); |
1074 | err = *val; | |
1075 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1076 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1077 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1078 | ||
1079 | set_val: | |
1080 | if (bdev != bdev->bd_contains) | |
1081 | err = -EINVAL; | |
1082 | else { | |
1083 | if (!capable(CAP_SYS_ADMIN)) | |
1084 | err = -EACCES; | |
1085 | else { | |
f9383c42 | 1086 | mutex_lock(&ide_setting_mtx); |
1497943e | 1087 | err = setfunc(drive, arg); |
f9383c42 | 1088 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1089 | } |
1090 | } | |
1091 | return err; | |
1da177e4 LT |
1092 | } |
1093 | ||
1094 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1095 | ||
1096 | /* | |
1097 | * stridx() returns the offset of c within s, | |
1098 | * or -1 if c is '\0' or not found within s. | |
1099 | */ | |
1100 | static int __init stridx (const char *s, char c) | |
1101 | { | |
1102 | char *i = strchr(s, c); | |
1103 | return (i && c) ? i - s : -1; | |
1104 | } | |
1105 | ||
1106 | /* | |
1107 | * match_parm() does parsing for ide_setup(): | |
1108 | * | |
1109 | * 1. the first char of s must be '='. | |
1110 | * 2. if the remainder matches one of the supplied keywords, | |
1111 | * the index (1 based) of the keyword is negated and returned. | |
1112 | * 3. if the remainder is a series of no more than max_vals numbers | |
1113 | * separated by commas, the numbers are saved in vals[] and a | |
1114 | * count of how many were saved is returned. Base10 is assumed, | |
1115 | * and base16 is allowed when prefixed with "0x". | |
1116 | * 4. otherwise, zero is returned. | |
1117 | */ | |
1118 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1119 | { | |
1120 | static const char *decimal = "0123456789"; | |
1121 | static const char *hex = "0123456789abcdef"; | |
1122 | int i, n; | |
1123 | ||
1124 | if (*s++ == '=') { | |
1125 | /* | |
1126 | * Try matching against the supplied keywords, | |
1127 | * and return -(index+1) if we match one | |
1128 | */ | |
1129 | if (keywords != NULL) { | |
1130 | for (i = 0; *keywords != NULL; ++i) { | |
1131 | if (!strcmp(s, *keywords++)) | |
1132 | return -(i+1); | |
1133 | } | |
1134 | } | |
1135 | /* | |
1136 | * Look for a series of no more than "max_vals" | |
1137 | * numeric values separated by commas, in base10, | |
1138 | * or base16 when prefixed with "0x". | |
1139 | * Return a count of how many were found. | |
1140 | */ | |
1141 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1142 | vals[n] = i; | |
1143 | while ((i = stridx(decimal, *++s)) >= 0) | |
1144 | vals[n] = (vals[n] * 10) + i; | |
1145 | if (*s == 'x' && !vals[n]) { | |
1146 | while ((i = stridx(hex, *++s)) >= 0) | |
1147 | vals[n] = (vals[n] * 0x10) + i; | |
1148 | } | |
1149 | if (++n == max_vals) | |
1150 | break; | |
1151 | if (*s == ',' || *s == ';') | |
1152 | ++s; | |
1153 | } | |
1154 | if (!*s) | |
1155 | return n; | |
1156 | } | |
1157 | return 0; /* zero = nothing matched */ | |
1158 | } | |
1159 | ||
84913882 | 1160 | extern int probe_ali14xx; |
84913882 | 1161 | extern int probe_umc8672; |
84913882 | 1162 | extern int probe_dtc2278; |
84913882 | 1163 | extern int probe_ht6560b; |
84913882 | 1164 | extern int probe_qd65xx; |
ade2daf9 | 1165 | extern int cmd640_vlb; |
1da177e4 LT |
1166 | |
1167 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1168 | ||
1169 | /* | |
1170 | * ide_setup() gets called VERY EARLY during initialization, | |
1171 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1172 | * | |
1c10e938 | 1173 | * Remember to update Documentation/ide/ide.txt if you change something here. |
1da177e4 LT |
1174 | */ |
1175 | static int __init ide_setup(char *s) | |
1176 | { | |
1177 | int i, vals[3]; | |
1178 | ide_hwif_t *hwif; | |
1179 | ide_drive_t *drive; | |
1180 | unsigned int hw, unit; | |
1181 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1182 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1183 | ||
1184 | ||
1185 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1186 | return 0; /* driver and not us */ | |
1187 | ||
1188 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1189 | return 0; | |
1190 | ||
1191 | printk(KERN_INFO "ide_setup: %s", s); | |
1192 | init_ide_data (); | |
1193 | ||
1194 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1195 | if (!strcmp(s, "ide=doubler")) { | |
1196 | extern int ide_doubler; | |
1197 | ||
1198 | printk(" : Enabled support for IDE doublers\n"); | |
1199 | ide_doubler = 1; | |
1200 | return 1; | |
1201 | } | |
1202 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1203 | ||
1204 | if (!strcmp(s, "ide=nodma")) { | |
1205 | printk(" : Prevented DMA\n"); | |
1206 | noautodma = 1; | |
c223701c | 1207 | goto obsolete_option; |
1da177e4 LT |
1208 | } |
1209 | ||
e3a59b4d HR |
1210 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1211 | if (!strcmp(s, "ide=noacpi")) { | |
1212 | //printk(" : Disable IDE ACPI support.\n"); | |
1213 | ide_noacpi = 1; | |
1214 | return 1; | |
1215 | } | |
1216 | if (!strcmp(s, "ide=acpigtf")) { | |
1217 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1218 | ide_noacpitfs = 0; | |
1219 | return 1; | |
1220 | } | |
1221 | if (!strcmp(s, "ide=acpionboot")) { | |
1222 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1223 | ide_noacpionboot = 0; | |
1224 | return 1; | |
1225 | } | |
1226 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1227 | ||
1da177e4 LT |
1228 | /* |
1229 | * Look for drive options: "hdx=" | |
1230 | */ | |
1231 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1232 | const char *hd_words[] = { | |
c223701c | 1233 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 1234 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 1235 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1236 | unit = s[2] - 'a'; |
1237 | hw = unit / MAX_DRIVES; | |
1238 | unit = unit % MAX_DRIVES; | |
1239 | hwif = &ide_hwifs[hw]; | |
1240 | drive = &hwif->drives[unit]; | |
1241 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1242 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
15220d9b | 1243 | goto obsolete_option; |
1da177e4 LT |
1244 | } |
1245 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1246 | case -1: /* "none" */ | |
1247 | case -2: /* "noprobe" */ | |
1248 | drive->noprobe = 1; | |
1249 | goto done; | |
1250 | case -3: /* "nowerr" */ | |
1251 | drive->bad_wstat = BAD_R_STAT; | |
1252 | hwif->noprobe = 0; | |
1253 | goto done; | |
1254 | case -4: /* "cdrom" */ | |
1255 | drive->present = 1; | |
1256 | drive->media = ide_cdrom; | |
1257 | /* an ATAPI device ignores DRDY */ | |
1258 | drive->ready_stat = 0; | |
1259 | hwif->noprobe = 0; | |
1260 | goto done; | |
c223701c BZ |
1261 | case -5: /* nodma */ |
1262 | drive->nodma = 1; | |
1263 | goto done; | |
1da177e4 LT |
1264 | case -6: /* "autotune" */ |
1265 | drive->autotune = IDE_TUNE_AUTO; | |
1266 | goto obsolete_option; | |
1267 | case -7: /* "noautotune" */ | |
1268 | drive->autotune = IDE_TUNE_NOAUTO; | |
1269 | goto obsolete_option; | |
36193484 JA |
1270 | case -11: /* noflush */ |
1271 | drive->noflush = 1; | |
1272 | goto done; | |
1da177e4 LT |
1273 | case -12: /* "remap" */ |
1274 | drive->remap_0_to_1 = 1; | |
d708c40d | 1275 | goto obsolete_option; |
1da177e4 LT |
1276 | case -13: /* "remap63" */ |
1277 | drive->sect0 = 63; | |
d708c40d | 1278 | goto obsolete_option; |
1da177e4 LT |
1279 | case -14: /* "scsi" */ |
1280 | drive->scsi = 1; | |
15220d9b | 1281 | goto obsolete_option; |
1da177e4 LT |
1282 | case 3: /* cyl,head,sect */ |
1283 | drive->media = ide_disk; | |
1284 | drive->ready_stat = READY_STAT; | |
1285 | drive->cyl = drive->bios_cyl = vals[0]; | |
1286 | drive->head = drive->bios_head = vals[1]; | |
1287 | drive->sect = drive->bios_sect = vals[2]; | |
1288 | drive->present = 1; | |
1289 | drive->forced_geom = 1; | |
1290 | hwif->noprobe = 0; | |
1291 | goto done; | |
1292 | default: | |
1293 | goto bad_option; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1298 | goto bad_option; | |
1299 | /* | |
1300 | * Look for bus speed option: "idebus=" | |
1301 | */ | |
1302 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1303 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1304 | goto bad_option; | |
1305 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1306 | idebus_parameter = vals[0]; | |
1307 | } else | |
1308 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1309 | goto done; | |
1310 | } | |
1311 | /* | |
1312 | * Look for interface options: "idex=" | |
1313 | */ | |
1314 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1315 | /* | |
1316 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1317 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1318 | */ | |
1319 | static const char *ide_words[] = { | |
b6209a90 | 1320 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1321 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1322 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1323 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 BZ |
1324 | |
1325 | hw_regs_t hwregs; | |
1326 | ||
1da177e4 LT |
1327 | hw = s[3] - '0'; |
1328 | hwif = &ide_hwifs[hw]; | |
1329 | i = match_parm(&s[4], ide_words, vals, 3); | |
1330 | ||
1331 | /* | |
1332 | * Cryptic check to ensure chipset not already set for hwif. | |
1333 | * Note: we can't depend on hwif->chipset here. | |
1334 | */ | |
1335 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1336 | /* chipset already specified */ | |
1337 | if (is_chipset_set[hw]) | |
1338 | goto bad_option; | |
1339 | if (i > -18 && i <= -11) { | |
1340 | /* these drivers are for "ide0=" only */ | |
1341 | if (hw != 0) | |
1342 | goto bad_hwif; | |
1343 | /* chipset already specified for 2nd port */ | |
1344 | if (is_chipset_set[hw+1]) | |
1345 | goto bad_option; | |
1346 | } | |
1347 | is_chipset_set[hw] = 1; | |
1348 | printk("\n"); | |
1349 | } | |
1350 | ||
1351 | switch (i) { | |
1352 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1353 | case -17: /* "ali14xx" */ | |
1354 | probe_ali14xx = 1; | |
9c027c68 | 1355 | goto obsolete_option; |
1da177e4 LT |
1356 | #endif |
1357 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1358 | case -16: /* "umc8672" */ | |
1359 | probe_umc8672 = 1; | |
9c027c68 | 1360 | goto obsolete_option; |
1da177e4 LT |
1361 | #endif |
1362 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1363 | case -15: /* "dtc2278" */ | |
1364 | probe_dtc2278 = 1; | |
9c027c68 | 1365 | goto obsolete_option; |
1da177e4 LT |
1366 | #endif |
1367 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1368 | case -14: /* "cmd640_vlb" */ | |
1da177e4 | 1369 | cmd640_vlb = 1; |
9c027c68 | 1370 | goto obsolete_option; |
1da177e4 LT |
1371 | #endif |
1372 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1373 | case -13: /* "ht6560b" */ | |
1374 | probe_ht6560b = 1; | |
9c027c68 | 1375 | goto obsolete_option; |
1da177e4 LT |
1376 | #endif |
1377 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1378 | case -12: /* "qd65xx" */ | |
1379 | probe_qd65xx = 1; | |
9c027c68 | 1380 | goto obsolete_option; |
1da177e4 LT |
1381 | #endif |
1382 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1383 | case -11: /* "four" drives on one set of ports */ | |
1384 | { | |
1385 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1386 | mate->drives[0].select.all ^= 0x20; | |
1387 | mate->drives[1].select.all ^= 0x20; | |
1388 | hwif->chipset = mate->chipset = ide_4drives; | |
1389 | mate->irq = hwif->irq; | |
1390 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1391 | hwif->mate = mate; |
1392 | mate->mate = hwif; | |
1393 | hwif->serialized = mate->serialized = 1; | |
1394 | goto obsolete_option; | |
1da177e4 LT |
1395 | } |
1396 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1397 | case -10: /* minus10 */ | |
1398 | case -9: /* minus9 */ | |
1399 | case -8: /* minus8 */ | |
1b516940 | 1400 | case -6: |
b6209a90 BZ |
1401 | case -4: |
1402 | case -3: | |
1da177e4 LT |
1403 | goto bad_option; |
1404 | case -7: /* ata66 */ | |
1405 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1406 | /* |
1407 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1408 | * cable detection is also overriden. | |
1409 | */ | |
1410 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1411 | goto obsolete_option; |
1412 | #else | |
1413 | goto bad_hwif; | |
1414 | #endif | |
1da177e4 LT |
1415 | case -5: /* "reset" */ |
1416 | hwif->reset = 1; | |
1417 | goto obsolete_option; | |
1da177e4 | 1418 | case -2: /* "serialize" */ |
1da177e4 LT |
1419 | hwif->mate = &ide_hwifs[hw^1]; |
1420 | hwif->mate->mate = hwif; | |
1421 | hwif->serialized = hwif->mate->serialized = 1; | |
1422 | goto obsolete_option; | |
1423 | ||
1424 | case -1: /* "noprobe" */ | |
1425 | hwif->noprobe = 1; | |
c53ea18d | 1426 | goto obsolete_option; |
1da177e4 LT |
1427 | |
1428 | case 1: /* base */ | |
1429 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1430 | case 2: /* base,ctl */ | |
1431 | vals[2] = 0; /* default irq = probe for it */ | |
1432 | case 3: /* base,ctl,irq */ | |
9239b333 BZ |
1433 | memset(&hwregs, 0, sizeof(hwregs)); |
1434 | ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq); | |
1435 | memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports)); | |
1da177e4 LT |
1436 | hwif->irq = vals[2]; |
1437 | hwif->noprobe = 0; | |
1438 | hwif->chipset = ide_forced; | |
1439 | goto obsolete_option; | |
1440 | ||
1441 | case 0: goto bad_option; | |
1442 | default: | |
1443 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1444 | return 1; | |
1445 | } | |
1446 | } | |
1447 | bad_option: | |
1448 | printk(" -- BAD OPTION\n"); | |
1449 | return 1; | |
1450 | obsolete_option: | |
1451 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1452 | return 1; | |
1453 | bad_hwif: | |
1454 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1455 | done: | |
1456 | printk("\n"); | |
1457 | return 1; | |
1458 | } | |
1459 | ||
1da177e4 LT |
1460 | EXPORT_SYMBOL(ide_lock); |
1461 | ||
8604affd BZ |
1462 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1463 | { | |
1464 | return 1; | |
1465 | } | |
1466 | ||
263756ec KS |
1467 | static char *media_string(ide_drive_t *drive) |
1468 | { | |
1469 | switch (drive->media) { | |
1470 | case ide_disk: | |
1471 | return "disk"; | |
1472 | case ide_cdrom: | |
1473 | return "cdrom"; | |
1474 | case ide_tape: | |
1475 | return "tape"; | |
1476 | case ide_floppy: | |
1477 | return "floppy"; | |
a7a832de DK |
1478 | case ide_optical: |
1479 | return "optical"; | |
263756ec KS |
1480 | default: |
1481 | return "UNKNOWN"; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1486 | { | |
1487 | ide_drive_t *drive = to_ide_device(dev); | |
1488 | return sprintf(buf, "%s\n", media_string(drive)); | |
1489 | } | |
1490 | ||
1491 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1492 | { | |
1493 | ide_drive_t *drive = to_ide_device(dev); | |
1494 | return sprintf(buf, "%s\n", drive->name); | |
1495 | } | |
1496 | ||
1497 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1498 | { | |
1499 | ide_drive_t *drive = to_ide_device(dev); | |
1500 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1501 | } | |
1502 | ||
e11b9035 BZ |
1503 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1504 | char *buf) | |
1505 | { | |
1506 | ide_drive_t *drive = to_ide_device(dev); | |
1507 | return sprintf(buf, "%s\n", drive->id->model); | |
1508 | } | |
1509 | ||
1510 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1511 | char *buf) | |
1512 | { | |
1513 | ide_drive_t *drive = to_ide_device(dev); | |
1514 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1515 | } | |
1516 | ||
1517 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1518 | char *buf) | |
1519 | { | |
1520 | ide_drive_t *drive = to_ide_device(dev); | |
1521 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1522 | } | |
1523 | ||
263756ec KS |
1524 | static struct device_attribute ide_dev_attrs[] = { |
1525 | __ATTR_RO(media), | |
1526 | __ATTR_RO(drivename), | |
1527 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1528 | __ATTR_RO(model), |
1529 | __ATTR_RO(firmware), | |
1530 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1531 | __ATTR_NULL |
1532 | }; | |
1533 | ||
7eff2e7a | 1534 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1535 | { |
1536 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1537 | |
1538 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1539 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1540 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1541 | return 0; |
1542 | } | |
1543 | ||
4031bbe4 RK |
1544 | static int generic_ide_probe(struct device *dev) |
1545 | { | |
1546 | ide_drive_t *drive = to_ide_device(dev); | |
1547 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1548 | ||
1549 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1550 | } | |
1551 | ||
1552 | static int generic_ide_remove(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 (drv->remove) | |
1558 | drv->remove(drive); | |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | static void generic_ide_shutdown(struct device *dev) | |
1564 | { | |
1565 | ide_drive_t *drive = to_ide_device(dev); | |
1566 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1567 | ||
1568 | if (dev->driver && drv->shutdown) | |
1569 | drv->shutdown(drive); | |
1570 | } | |
1571 | ||
1da177e4 LT |
1572 | struct bus_type ide_bus_type = { |
1573 | .name = "ide", | |
8604affd | 1574 | .match = ide_bus_match, |
263756ec | 1575 | .uevent = ide_uevent, |
4031bbe4 RK |
1576 | .probe = generic_ide_probe, |
1577 | .remove = generic_ide_remove, | |
1578 | .shutdown = generic_ide_shutdown, | |
263756ec | 1579 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1580 | .suspend = generic_ide_suspend, |
1581 | .resume = generic_ide_resume, | |
1582 | }; | |
1583 | ||
8604affd BZ |
1584 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1585 | ||
1da177e4 LT |
1586 | /* |
1587 | * This is gets invoked once during initialization, to set *everything* up | |
1588 | */ | |
1589 | static int __init ide_init(void) | |
1590 | { | |
349ae23f RD |
1591 | int ret; |
1592 | ||
eba8ff94 | 1593 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n"); |
1da177e4 LT |
1594 | system_bus_speed = ide_system_bus_speed(); |
1595 | ||
537f06c5 BZ |
1596 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " |
1597 | "for PIO modes%s\n", system_bus_speed, | |
1598 | idebus_parameter ? "" : "; override with idebus=xx"); | |
1599 | ||
349ae23f RD |
1600 | ret = bus_register(&ide_bus_type); |
1601 | if (ret < 0) { | |
1602 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1603 | return ret; | |
1604 | } | |
1da177e4 LT |
1605 | |
1606 | init_ide_data(); | |
1607 | ||
5cbf79cd | 1608 | proc_ide_create(); |
1da177e4 | 1609 | |
1da177e4 LT |
1610 | return 0; |
1611 | } | |
1612 | ||
1613 | #ifdef MODULE | |
1614 | static char *options = NULL; | |
1615 | module_param(options, charp, 0); | |
1616 | MODULE_LICENSE("GPL"); | |
1617 | ||
1618 | static void __init parse_options (char *line) | |
1619 | { | |
1620 | char *next = line; | |
1621 | ||
1622 | if (line == NULL || !*line) | |
1623 | return; | |
1624 | while ((line = next) != NULL) { | |
1625 | if ((next = strchr(line,' ')) != NULL) | |
1626 | *next++ = 0; | |
1627 | if (!ide_setup(line)) | |
1628 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1629 | } | |
1630 | } | |
1631 | ||
fbd8ad30 | 1632 | int __init init_module (void) |
1da177e4 LT |
1633 | { |
1634 | parse_options(options); | |
1635 | return ide_init(); | |
1636 | } | |
1637 | ||
eb797227 | 1638 | void __exit cleanup_module (void) |
1da177e4 LT |
1639 | { |
1640 | int index; | |
1641 | ||
1642 | for (index = 0; index < MAX_HWIFS; ++index) | |
f82c2b17 | 1643 | ide_unregister(index, 0, 0); |
1da177e4 | 1644 | |
1da177e4 | 1645 | proc_ide_destroy(); |
1da177e4 LT |
1646 | |
1647 | bus_unregister(&ide_bus_type); | |
1648 | } | |
1649 | ||
1650 | #else /* !MODULE */ | |
1651 | ||
1652 | __setup("", ide_setup); | |
1653 | ||
1654 | module_init(ide_init); | |
1655 | ||
1656 | #endif /* MODULE */ |