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1da177e4 LT |
1 | /* |
2 | * linux/drivers/ide/ide.c Version 7.00beta2 Mar 05 2003 | |
3 | * | |
4 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Mostly written by Mark Lord <mlord@pobox.com> | |
9 | * and Gadi Oxman <gadio@netvision.net.il> | |
10 | * and Andre Hedrick <andre@linux-ide.org> | |
11 | * | |
12 | * See linux/MAINTAINERS for address of current maintainer. | |
13 | * | |
14 | * This is the multiple IDE interface driver, as evolved from hd.c. | |
15 | * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs | |
16 | * (usually 14 & 15). | |
17 | * There can be up to two drives per interface, as per the ATA-2 spec. | |
18 | * | |
1da177e4 LT |
19 | * ... |
20 | * | |
21 | * From hd.c: | |
22 | * | | |
23 | * | It traverses the request-list, using interrupts to jump between functions. | |
24 | * | As nearly all functions can be called within interrupts, we may not sleep. | |
25 | * | Special care is recommended. Have Fun! | |
26 | * | | |
27 | * | modified by Drew Eckhardt to check nr of hd's from the CMOS. | |
28 | * | | |
29 | * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug | |
30 | * | in the early extended-partition checks and added DM partitions. | |
31 | * | | |
32 | * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). | |
33 | * | | |
34 | * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", | |
35 | * | and general streamlining by Mark Lord (mlord@pobox.com). | |
36 | * | |
37 | * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: | |
38 | * | |
39 | * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) | |
40 | * Delman Lee (delman@ieee.org) ("Mr. atdisk2") | |
41 | * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) | |
42 | * | |
43 | * This was a rewrite of just about everything from hd.c, though some original | |
44 | * code is still sprinkled about. Think of it as a major evolution, with | |
45 | * inspiration from lots of linux users, esp. hamish@zot.apana.org.au | |
1da177e4 LT |
46 | */ |
47 | ||
48 | #define REVISION "Revision: 7.00alpha2" | |
49 | #define VERSION "Id: ide.c 7.00a2 20020906" | |
50 | ||
1da177e4 LT |
51 | #define _IDE_C /* Tell ide.h it's really us */ |
52 | ||
1da177e4 LT |
53 | #include <linux/module.h> |
54 | #include <linux/types.h> | |
55 | #include <linux/string.h> | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/timer.h> | |
58 | #include <linux/mm.h> | |
59 | #include <linux/interrupt.h> | |
60 | #include <linux/major.h> | |
61 | #include <linux/errno.h> | |
62 | #include <linux/genhd.h> | |
63 | #include <linux/blkpg.h> | |
64 | #include <linux/slab.h> | |
65 | #include <linux/init.h> | |
66 | #include <linux/pci.h> | |
67 | #include <linux/delay.h> | |
68 | #include <linux/ide.h> | |
1da177e4 LT |
69 | #include <linux/completion.h> |
70 | #include <linux/reboot.h> | |
71 | #include <linux/cdrom.h> | |
72 | #include <linux/seq_file.h> | |
73 | #include <linux/device.h> | |
74 | #include <linux/bitops.h> | |
75 | ||
76 | #include <asm/byteorder.h> | |
77 | #include <asm/irq.h> | |
78 | #include <asm/uaccess.h> | |
79 | #include <asm/io.h> | |
80 | ||
81 | ||
82 | /* default maximum number of failures */ | |
83 | #define IDE_DEFAULT_MAX_FAILURES 1 | |
84 | ||
85 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, | |
86 | IDE2_MAJOR, IDE3_MAJOR, | |
87 | IDE4_MAJOR, IDE5_MAJOR, | |
88 | IDE6_MAJOR, IDE7_MAJOR, | |
89 | IDE8_MAJOR, IDE9_MAJOR }; | |
90 | ||
91 | static int idebus_parameter; /* holds the "idebus=" parameter */ | |
92 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ | |
1da177e4 | 93 | |
ef29888e | 94 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 LT |
95 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
96 | ||
6d208b39 | 97 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
ade2daf9 | 98 | int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
1da177e4 LT |
99 | #endif |
100 | ||
1da177e4 | 101 | int noautodma = 0; |
1da177e4 | 102 | |
e3a59b4d HR |
103 | #ifdef CONFIG_BLK_DEV_IDEACPI |
104 | int ide_noacpi = 0; | |
105 | int ide_noacpitfs = 1; | |
106 | int ide_noacpionboot = 1; | |
107 | #endif | |
108 | ||
1da177e4 LT |
109 | /* |
110 | * This is declared extern in ide.h, for access by other IDE modules: | |
111 | */ | |
112 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ | |
113 | ||
114 | EXPORT_SYMBOL(ide_hwifs); | |
115 | ||
1da177e4 LT |
116 | /* |
117 | * Do not even *think* about calling this! | |
118 | */ | |
cbb010c1 | 119 | void ide_init_port_data(ide_hwif_t *hwif, unsigned int index) |
1da177e4 LT |
120 | { |
121 | unsigned int unit; | |
122 | ||
123 | /* bulk initialize hwif & drive info with zeros */ | |
124 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
125 | ||
126 | /* fill in any non-zero initial values */ | |
127 | hwif->index = index; | |
128 | hwif->major = ide_hwif_to_major[index]; | |
129 | ||
130 | hwif->name[0] = 'i'; | |
131 | hwif->name[1] = 'd'; | |
132 | hwif->name[2] = 'e'; | |
133 | hwif->name[3] = '0' + index; | |
134 | ||
135 | hwif->bus_state = BUSSTATE_ON; | |
136 | ||
f36d4024 | 137 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
138 | |
139 | default_hwif_iops(hwif); | |
140 | default_hwif_transport(hwif); | |
141 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
142 | ide_drive_t *drive = &hwif->drives[unit]; | |
143 | ||
144 | drive->media = ide_disk; | |
145 | drive->select.all = (unit<<4)|0xa0; | |
146 | drive->hwif = hwif; | |
147 | drive->ctl = 0x08; | |
148 | drive->ready_stat = READY_STAT; | |
149 | drive->bad_wstat = BAD_W_STAT; | |
150 | drive->special.b.recalibrate = 1; | |
151 | drive->special.b.set_geometry = 1; | |
152 | drive->name[0] = 'h'; | |
153 | drive->name[1] = 'd'; | |
154 | drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; | |
155 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; | |
156 | drive->using_dma = 0; | |
1da177e4 LT |
157 | drive->vdma = 0; |
158 | INIT_LIST_HEAD(&drive->list); | |
f36d4024 | 159 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
160 | } |
161 | } | |
cbb010c1 | 162 | EXPORT_SYMBOL_GPL(ide_init_port_data); |
1da177e4 LT |
163 | |
164 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
165 | { | |
166 | hw_regs_t hw; | |
167 | ||
168 | memset(&hw, 0, sizeof(hw_regs_t)); | |
169 | ||
170 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
171 | ||
1da177e4 LT |
172 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); |
173 | ||
174 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; | |
175 | #ifdef CONFIG_BLK_DEV_HD | |
176 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) | |
177 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ | |
178 | #endif | |
179 | } | |
180 | ||
1da177e4 LT |
181 | /* |
182 | * init_ide_data() sets reasonable default values into all fields | |
183 | * of all instances of the hwifs and drives, but only on the first call. | |
184 | * Subsequent calls have no effect (they don't wipe out anything). | |
185 | * | |
186 | * This routine is normally called at driver initialization time, | |
187 | * but may also be called MUCH earlier during kernel "command-line" | |
188 | * parameter processing. As such, we cannot depend on any other parts | |
189 | * of the kernel (such as memory allocation) to be functioning yet. | |
190 | * | |
191 | * This is too bad, as otherwise we could dynamically allocate the | |
192 | * ide_drive_t structs as needed, rather than always consuming memory | |
193 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
194 | * | |
195 | * FIXME: We should stuff the setup data into __init and copy the | |
196 | * relevant hwifs/allocate them properly during boot. | |
197 | */ | |
198 | #define MAGIC_COOKIE 0x12345678 | |
199 | static void __init init_ide_data (void) | |
200 | { | |
201 | ide_hwif_t *hwif; | |
202 | unsigned int index; | |
203 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
204 | ||
205 | if (magic_cookie != MAGIC_COOKIE) | |
206 | return; /* already initialized */ | |
207 | magic_cookie = 0; | |
208 | ||
209 | /* Initialise all interface structures */ | |
210 | for (index = 0; index < MAX_HWIFS; ++index) { | |
211 | hwif = &ide_hwifs[index]; | |
cbb010c1 | 212 | ide_init_port_data(hwif, index); |
1da177e4 LT |
213 | init_hwif_default(hwif, index); |
214 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
9239b333 | 215 | hwif->irq = |
1da177e4 LT |
216 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); |
217 | #endif | |
218 | } | |
1da177e4 LT |
219 | } |
220 | ||
221 | /** | |
222 | * ide_system_bus_speed - guess bus speed | |
223 | * | |
224 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
225 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
226 | * The default is 40 for known PCI systems, 50 otherwise. | |
227 | * The "idebus=xx" parameter can be used to override this value. | |
228 | * The actual value to be used is computed/displayed the first time | |
229 | * through. Drivers should only use this as a last resort. | |
230 | * | |
231 | * Returns a guessed speed in MHz. | |
232 | */ | |
233 | ||
234 | static int ide_system_bus_speed(void) | |
235 | { | |
236 | #ifdef CONFIG_PCI | |
237 | static struct pci_device_id pci_default[] = { | |
238 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
239 | { } | |
240 | }; | |
241 | #else | |
242 | #define pci_default 0 | |
243 | #endif /* CONFIG_PCI */ | |
244 | ||
245 | if (!system_bus_speed) { | |
246 | if (idebus_parameter) { | |
247 | /* user supplied value */ | |
248 | system_bus_speed = idebus_parameter; | |
249 | } else if (pci_dev_present(pci_default)) { | |
250 | /* safe default value for PCI */ | |
251 | system_bus_speed = 33; | |
252 | } else { | |
253 | /* safe default value for VESA and PCI */ | |
254 | system_bus_speed = 50; | |
255 | } | |
256 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " | |
257 | "for PIO modes%s\n", system_bus_speed, | |
258 | idebus_parameter ? "" : "; override with idebus=xx"); | |
259 | } | |
260 | return system_bus_speed; | |
261 | } | |
262 | ||
baa8f3e9 BZ |
263 | ide_hwif_t * ide_find_port(unsigned long base) |
264 | { | |
265 | ide_hwif_t *hwif; | |
266 | int i; | |
267 | ||
268 | for (i = 0; i < MAX_HWIFS; i++) { | |
269 | hwif = &ide_hwifs[i]; | |
270 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
271 | goto found; | |
272 | } | |
273 | ||
274 | for (i = 0; i < MAX_HWIFS; i++) { | |
275 | hwif = &ide_hwifs[i]; | |
276 | if (hwif->io_ports[IDE_DATA_OFFSET] == 0) | |
277 | goto found; | |
278 | } | |
279 | ||
280 | hwif = NULL; | |
281 | found: | |
282 | return hwif; | |
283 | } | |
284 | ||
285 | EXPORT_SYMBOL_GPL(ide_find_port); | |
286 | ||
1da177e4 LT |
287 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
288 | unsigned long addr, int num) | |
289 | { | |
290 | struct resource *res = request_region(addr, num, hwif->name); | |
291 | ||
292 | if (!res) | |
293 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
294 | hwif->name, addr, addr+num-1); | |
295 | return res; | |
296 | } | |
297 | ||
298 | /** | |
299 | * ide_hwif_request_regions - request resources for IDE | |
300 | * @hwif: interface to use | |
301 | * | |
302 | * Requests all the needed resources for an interface. | |
303 | * Right now core IDE code does this work which is deeply wrong. | |
304 | * MMIO leaves it to the controller driver, | |
305 | * PIO will migrate this way over time. | |
306 | */ | |
307 | ||
308 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
309 | { | |
310 | unsigned long addr; | |
311 | unsigned int i; | |
312 | ||
2ad1e558 | 313 | if (hwif->mmio) |
1da177e4 | 314 | return 0; |
1da177e4 LT |
315 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
316 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
317 | goto control_region_busy; | |
318 | hwif->straight8 = 0; | |
319 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
320 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
321 | if (!hwif_request_region(hwif, addr, 8)) | |
322 | goto data_region_busy; | |
323 | hwif->straight8 = 1; | |
324 | return 0; | |
325 | } | |
326 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
327 | addr = hwif->io_ports[i]; | |
328 | if (!hwif_request_region(hwif, addr, 1)) { | |
329 | while (--i) | |
330 | release_region(addr, 1); | |
331 | goto data_region_busy; | |
332 | } | |
333 | } | |
334 | return 0; | |
335 | ||
336 | data_region_busy: | |
337 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
338 | if (addr) | |
339 | release_region(addr, 1); | |
340 | control_region_busy: | |
341 | /* If any errors are return, we drop the hwif interface. */ | |
342 | return -EBUSY; | |
343 | } | |
344 | ||
345 | /** | |
346 | * ide_hwif_release_regions - free IDE resources | |
347 | * | |
348 | * Note that we only release the standard ports, | |
349 | * and do not even try to handle any extra ports | |
350 | * allocated for weird IDE interface chipsets. | |
351 | * | |
352 | * Note also that we don't yet handle mmio resources here. More | |
353 | * importantly our caller should be doing this so we need to | |
354 | * restructure this as a helper function for drivers. | |
355 | */ | |
356 | ||
357 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
358 | { | |
359 | u32 i = 0; | |
360 | ||
2ad1e558 | 361 | if (hwif->mmio) |
1da177e4 LT |
362 | return; |
363 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
364 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
365 | if (hwif->straight8) { | |
366 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
367 | return; | |
368 | } | |
369 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
370 | if (hwif->io_ports[i]) | |
371 | release_region(hwif->io_ports[i], 1); | |
372 | } | |
373 | ||
374 | /** | |
375 | * ide_hwif_restore - restore hwif to template | |
376 | * @hwif: hwif to update | |
377 | * @tmp_hwif: template | |
378 | * | |
020e322d | 379 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
380 | * from the template. |
381 | */ | |
382 | ||
383 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
384 | { | |
385 | hwif->hwgroup = tmp_hwif->hwgroup; | |
386 | ||
387 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
388 | ||
389 | hwif->proc = tmp_hwif->proc; | |
390 | ||
391 | hwif->major = tmp_hwif->major; | |
392 | hwif->straight8 = tmp_hwif->straight8; | |
393 | hwif->bus_state = tmp_hwif->bus_state; | |
394 | ||
6a824c92 BZ |
395 | hwif->host_flags = tmp_hwif->host_flags; |
396 | ||
4099d143 BZ |
397 | hwif->pio_mask = tmp_hwif->pio_mask; |
398 | ||
1da177e4 LT |
399 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
400 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
401 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
402 | ||
49521f97 BZ |
403 | hwif->cbl = tmp_hwif->cbl; |
404 | ||
1da177e4 LT |
405 | hwif->chipset = tmp_hwif->chipset; |
406 | hwif->hold = tmp_hwif->hold; | |
407 | ||
408 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
409 | hwif->pci_dev = tmp_hwif->pci_dev; | |
410 | hwif->cds = tmp_hwif->cds; | |
411 | #endif | |
412 | ||
26bcb879 | 413 | hwif->set_pio_mode = tmp_hwif->set_pio_mode; |
88b2b32b | 414 | hwif->set_dma_mode = tmp_hwif->set_dma_mode; |
b4e44369 | 415 | hwif->mdma_filter = tmp_hwif->mdma_filter; |
2d5eaa6d | 416 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
417 | hwif->selectproc = tmp_hwif->selectproc; |
418 | hwif->reset_poll = tmp_hwif->reset_poll; | |
419 | hwif->pre_reset = tmp_hwif->pre_reset; | |
420 | hwif->resetproc = tmp_hwif->resetproc; | |
1da177e4 LT |
421 | hwif->maskproc = tmp_hwif->maskproc; |
422 | hwif->quirkproc = tmp_hwif->quirkproc; | |
423 | hwif->busproc = tmp_hwif->busproc; | |
424 | ||
425 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
426 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
427 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
428 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
429 | ||
15ce926a | 430 | hwif->dma_host_set = tmp_hwif->dma_host_set; |
1da177e4 LT |
431 | hwif->dma_setup = tmp_hwif->dma_setup; |
432 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
433 | hwif->dma_start = tmp_hwif->dma_start; | |
434 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
1da177e4 | 435 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 436 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
841d2a9b | 437 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 438 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
439 | |
440 | hwif->OUTB = tmp_hwif->OUTB; | |
441 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
442 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
443 | hwif->OUTSW = tmp_hwif->OUTSW; |
444 | hwif->OUTSL = tmp_hwif->OUTSL; | |
445 | ||
446 | hwif->INB = tmp_hwif->INB; | |
447 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
448 | hwif->INSW = tmp_hwif->INSW; |
449 | hwif->INSL = tmp_hwif->INSL; | |
450 | ||
451 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
452 | ||
453 | hwif->mmio = tmp_hwif->mmio; | |
454 | hwif->rqsize = tmp_hwif->rqsize; | |
1da177e4 LT |
455 | |
456 | #ifndef CONFIG_BLK_DEV_IDECS | |
457 | hwif->irq = tmp_hwif->irq; | |
458 | #endif | |
459 | ||
460 | hwif->dma_base = tmp_hwif->dma_base; | |
1da177e4 LT |
461 | hwif->dma_command = tmp_hwif->dma_command; |
462 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
463 | hwif->dma_status = tmp_hwif->dma_status; | |
464 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
465 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
466 | ||
1da177e4 LT |
467 | hwif->config_data = tmp_hwif->config_data; |
468 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
469 | hwif->extra_base = tmp_hwif->extra_base; |
470 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
471 | |
472 | hwif->hwif_data = tmp_hwif->hwif_data; | |
473 | } | |
474 | ||
475 | /** | |
020e322d | 476 | * ide_unregister - free an IDE interface |
1da177e4 LT |
477 | * @index: index of interface (will change soon to a pointer) |
478 | * | |
479 | * Perform the final unregister of an IDE interface. At the moment | |
480 | * we don't refcount interfaces so this will also get split up. | |
481 | * | |
482 | * Locking: | |
483 | * The caller must not hold the IDE locks | |
484 | * The drive present/vanishing is not yet properly locked | |
485 | * Take care with the callbacks. These have been split to avoid | |
486 | * deadlocking the IDE layer. The shutdown callback is called | |
487 | * before we take the lock and free resources. It is up to the | |
488 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
489 | * the interface will not be reopened (present/vanishing locking |
490 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
491 | * call the cleanup callback with the ide locks held. |
492 | * | |
493 | * Unregister restores the hwif structures to the default state. | |
494 | * This is raving bonkers. | |
495 | */ | |
496 | ||
497 | void ide_unregister(unsigned int index) | |
498 | { | |
499 | ide_drive_t *drive; | |
500 | ide_hwif_t *hwif, *g; | |
ef29888e | 501 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 502 | ide_hwgroup_t *hwgroup; |
8604affd | 503 | int irq_count = 0, unit; |
1da177e4 LT |
504 | |
505 | BUG_ON(index >= MAX_HWIFS); | |
506 | ||
507 | BUG_ON(in_interrupt()); | |
508 | BUG_ON(irqs_disabled()); | |
ef29888e | 509 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
510 | spin_lock_irq(&ide_lock); |
511 | hwif = &ide_hwifs[index]; | |
512 | if (!hwif->present) | |
513 | goto abort; | |
514 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
515 | drive = &hwif->drives[unit]; | |
94f6c59d | 516 | if (!drive->present) |
1da177e4 | 517 | continue; |
8604affd BZ |
518 | spin_unlock_irq(&ide_lock); |
519 | device_unregister(&drive->gendev); | |
f36d4024 | 520 | wait_for_completion(&drive->gendev_rel_comp); |
8604affd | 521 | spin_lock_irq(&ide_lock); |
1da177e4 LT |
522 | } |
523 | hwif->present = 0; | |
524 | ||
525 | spin_unlock_irq(&ide_lock); | |
526 | ||
5cbf79cd | 527 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
528 | |
529 | hwgroup = hwif->hwgroup; | |
530 | /* | |
531 | * free the irq if we were the only hwif using it | |
532 | */ | |
533 | g = hwgroup->hwif; | |
534 | do { | |
535 | if (g->irq == hwif->irq) | |
536 | ++irq_count; | |
537 | g = g->next; | |
538 | } while (g != hwgroup->hwif); | |
539 | if (irq_count == 1) | |
540 | free_irq(hwif->irq, hwgroup); | |
541 | ||
542 | spin_lock_irq(&ide_lock); | |
543 | /* | |
544 | * Note that we only release the standard ports, | |
545 | * and do not even try to handle any extra ports | |
546 | * allocated for weird IDE interface chipsets. | |
547 | */ | |
548 | ide_hwif_release_regions(hwif); | |
549 | ||
550 | /* | |
551 | * Remove us from the hwgroup, and free | |
552 | * the hwgroup if we were the only member | |
553 | */ | |
1da177e4 LT |
554 | if (hwif->next == hwif) { |
555 | BUG_ON(hwgroup->hwif != hwif); | |
556 | kfree(hwgroup); | |
557 | } else { | |
558 | /* There is another interface in hwgroup. | |
559 | * Unlink us, and set hwgroup->drive and ->hwif to | |
560 | * something sane. | |
561 | */ | |
562 | g = hwgroup->hwif; | |
563 | while (g->next != hwif) | |
564 | g = g->next; | |
565 | g->next = hwif->next; | |
566 | if (hwgroup->hwif == hwif) { | |
567 | /* Chose a random hwif for hwgroup->hwif. | |
568 | * It's guaranteed that there are no drives | |
569 | * left in the hwgroup. | |
570 | */ | |
571 | BUG_ON(hwgroup->drive != NULL); | |
572 | hwgroup->hwif = g; | |
573 | } | |
574 | BUG_ON(hwgroup->hwif == hwif); | |
575 | } | |
576 | ||
577 | /* More messed up locking ... */ | |
578 | spin_unlock_irq(&ide_lock); | |
579 | device_unregister(&hwif->gendev); | |
f36d4024 | 580 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
581 | |
582 | /* | |
583 | * Remove us from the kernel's knowledge | |
584 | */ | |
585 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
586 | kfree(hwif->sg_table); | |
587 | unregister_blkdev(hwif->major, hwif->name); | |
588 | spin_lock_irq(&ide_lock); | |
589 | ||
590 | if (hwif->dma_base) { | |
591 | (void) ide_release_dma(hwif); | |
592 | ||
593 | hwif->dma_base = 0; | |
1da177e4 LT |
594 | hwif->dma_command = 0; |
595 | hwif->dma_vendor1 = 0; | |
596 | hwif->dma_status = 0; | |
597 | hwif->dma_vendor3 = 0; | |
598 | hwif->dma_prdtable = 0; | |
020e322d SS |
599 | |
600 | hwif->extra_base = 0; | |
601 | hwif->extra_ports = 0; | |
1da177e4 LT |
602 | } |
603 | ||
604 | /* copy original settings */ | |
605 | tmp_hwif = *hwif; | |
606 | ||
607 | /* restore hwif data to pristine status */ | |
cbb010c1 | 608 | ide_init_port_data(hwif, index); |
1da177e4 LT |
609 | init_hwif_default(hwif, index); |
610 | ||
611 | ide_hwif_restore(hwif, &tmp_hwif); | |
612 | ||
613 | abort: | |
614 | spin_unlock_irq(&ide_lock); | |
ef29888e | 615 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
616 | } |
617 | ||
618 | EXPORT_SYMBOL(ide_unregister); | |
619 | ||
620 | ||
621 | /** | |
622 | * ide_setup_ports - set up IDE interface ports | |
623 | * @hw: register descriptions | |
624 | * @base: base register | |
625 | * @offsets: table of register offsets | |
626 | * @ctrl: control register | |
627 | * @ack_irq: IRQ ack | |
628 | * @irq: interrupt lie | |
629 | * | |
630 | * Setup hw_regs_t structure described by parameters. You | |
631 | * may set up the hw structure yourself OR use this routine to | |
632 | * do it for you. This is basically a helper | |
633 | * | |
634 | */ | |
635 | ||
636 | void ide_setup_ports ( hw_regs_t *hw, | |
637 | unsigned long base, int *offsets, | |
638 | unsigned long ctrl, unsigned long intr, | |
639 | ide_ack_intr_t *ack_intr, | |
640 | /* | |
641 | * ide_io_ops_t *iops, | |
642 | */ | |
643 | int irq) | |
644 | { | |
645 | int i; | |
646 | ||
2c3e0262 | 647 | memset(hw, 0, sizeof(hw_regs_t)); |
1da177e4 LT |
648 | for (i = 0; i < IDE_NR_PORTS; i++) { |
649 | if (offsets[i] == -1) { | |
650 | switch(i) { | |
651 | case IDE_CONTROL_OFFSET: | |
652 | hw->io_ports[i] = ctrl; | |
653 | break; | |
654 | #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) | |
655 | case IDE_IRQ_OFFSET: | |
656 | hw->io_ports[i] = intr; | |
657 | break; | |
658 | #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ | |
659 | default: | |
660 | hw->io_ports[i] = 0; | |
661 | break; | |
662 | } | |
663 | } else { | |
664 | hw->io_ports[i] = base + offsets[i]; | |
665 | } | |
666 | } | |
667 | hw->irq = irq; | |
1da177e4 LT |
668 | hw->ack_intr = ack_intr; |
669 | /* | |
670 | * hw->iops = iops; | |
671 | */ | |
672 | } | |
673 | ||
57c802e8 BZ |
674 | void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw) |
675 | { | |
676 | memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports)); | |
677 | hwif->irq = hw->irq; | |
678 | hwif->noprobe = 0; | |
679 | hwif->chipset = hw->chipset; | |
680 | hwif->gendev.parent = hw->dev; | |
681 | hwif->ack_intr = hw->ack_intr; | |
682 | } | |
683 | EXPORT_SYMBOL_GPL(ide_init_port_hw); | |
684 | ||
1da177e4 | 685 | /** |
fd9bb539 | 686 | * ide_register_hw - register IDE interface |
1da177e4 | 687 | * @hw: hardware registers |
f01393e4 | 688 | * @quirkproc: quirkproc function |
1da177e4 | 689 | * @hwifp: pointer to returned hwif |
1da177e4 LT |
690 | * |
691 | * Register an IDE interface, specifying exactly the registers etc. | |
1da177e4 LT |
692 | * |
693 | * Returns -1 on error. | |
694 | */ | |
695 | ||
f01393e4 | 696 | int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *), |
cbb010c1 | 697 | ide_hwif_t **hwifp) |
1da177e4 LT |
698 | { |
699 | int index, retry = 1; | |
700 | ide_hwif_t *hwif; | |
cbb010c1 | 701 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
795d74b5 | 702 | |
1da177e4 LT |
703 | do { |
704 | for (index = 0; index < MAX_HWIFS; ++index) { | |
705 | hwif = &ide_hwifs[index]; | |
8f173b5b | 706 | if (hwif->io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) |
1da177e4 LT |
707 | goto found; |
708 | } | |
709 | for (index = 0; index < MAX_HWIFS; ++index) { | |
710 | hwif = &ide_hwifs[index]; | |
711 | if (hwif->hold) | |
712 | continue; | |
795d74b5 | 713 | if (!hwif->present && hwif->mate == NULL) |
1da177e4 LT |
714 | goto found; |
715 | } | |
716 | for (index = 0; index < MAX_HWIFS; index++) | |
717 | ide_unregister(index); | |
718 | } while (retry--); | |
719 | return -1; | |
720 | found: | |
721 | if (hwif->present) | |
722 | ide_unregister(index); | |
723 | else if (!hwif->hold) { | |
cbb010c1 | 724 | ide_init_port_data(hwif, index); |
1da177e4 LT |
725 | init_hwif_default(hwif, index); |
726 | } | |
727 | if (hwif->present) | |
728 | return -1; | |
57c802e8 BZ |
729 | |
730 | ide_init_port_hw(hwif, hw); | |
f01393e4 | 731 | hwif->quirkproc = quirkproc; |
1da177e4 | 732 | |
cbb010c1 | 733 | idx[0] = index; |
8447d9d5 | 734 | |
cbb010c1 | 735 | ide_device_add(idx); |
1da177e4 LT |
736 | |
737 | if (hwifp) | |
738 | *hwifp = hwif; | |
739 | ||
cbb010c1 | 740 | return hwif->present ? index : -1; |
1da177e4 LT |
741 | } |
742 | ||
1da177e4 LT |
743 | EXPORT_SYMBOL(ide_register_hw); |
744 | ||
745 | /* | |
746 | * Locks for IDE setting functionality | |
747 | */ | |
748 | ||
f9383c42 | 749 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 750 | |
f9383c42 | 751 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 752 | |
1da177e4 LT |
753 | /** |
754 | * ide_spin_wait_hwgroup - wait for group | |
755 | * @drive: drive in the group | |
756 | * | |
757 | * Wait for an IDE device group to go non busy and then return | |
758 | * holding the ide_lock which guards the hwgroup->busy status | |
759 | * and right to use it. | |
760 | */ | |
761 | ||
762 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
763 | { | |
764 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
765 | unsigned long timeout = jiffies + (3 * HZ); | |
766 | ||
767 | spin_lock_irq(&ide_lock); | |
768 | ||
769 | while (hwgroup->busy) { | |
770 | unsigned long lflags; | |
771 | spin_unlock_irq(&ide_lock); | |
772 | local_irq_set(lflags); | |
773 | if (time_after(jiffies, timeout)) { | |
774 | local_irq_restore(lflags); | |
775 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
776 | return -EBUSY; | |
777 | } | |
778 | local_irq_restore(lflags); | |
779 | spin_lock_irq(&ide_lock); | |
780 | } | |
781 | return 0; | |
782 | } | |
783 | ||
784 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
785 | ||
7662d046 | 786 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 787 | { |
1497943e BZ |
788 | if (drive->no_io_32bit) |
789 | return -EPERM; | |
790 | ||
791 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
792 | return -EINVAL; | |
793 | ||
644a9d76 BZ |
794 | if (ide_spin_wait_hwgroup(drive)) |
795 | return -EBUSY; | |
796 | ||
1da177e4 LT |
797 | drive->io_32bit = arg; |
798 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
799 | if (HWIF(drive)->chipset == ide_dtc2278) | |
800 | HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; | |
801 | #endif /* CONFIG_BLK_DEV_DTC2278 */ | |
644a9d76 BZ |
802 | |
803 | spin_unlock_irq(&ide_lock); | |
804 | ||
1da177e4 LT |
805 | return 0; |
806 | } | |
807 | ||
1497943e BZ |
808 | static int set_ksettings(ide_drive_t *drive, int arg) |
809 | { | |
810 | if (arg < 0 || arg > 1) | |
811 | return -EINVAL; | |
812 | ||
813 | if (ide_spin_wait_hwgroup(drive)) | |
814 | return -EBUSY; | |
815 | drive->keep_settings = arg; | |
816 | spin_unlock_irq(&ide_lock); | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
7662d046 | 821 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
822 | { |
823 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
824 | ide_hwif_t *hwif = drive->hwif; |
825 | int err = -EPERM; | |
826 | ||
1497943e BZ |
827 | if (arg < 0 || arg > 1) |
828 | return -EINVAL; | |
829 | ||
1da177e4 | 830 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
831 | goto out; |
832 | ||
15ce926a | 833 | if (hwif->dma_host_set == NULL) |
87996204 BZ |
834 | goto out; |
835 | ||
836 | err = -EBUSY; | |
837 | if (ide_spin_wait_hwgroup(drive)) | |
838 | goto out; | |
839 | /* | |
840 | * set ->busy flag, unlock and let it ride | |
841 | */ | |
842 | hwif->hwgroup->busy = 1; | |
843 | spin_unlock_irq(&ide_lock); | |
844 | ||
845 | err = 0; | |
846 | ||
1da177e4 | 847 | if (arg) { |
23b1bd45 | 848 | if (ide_set_dma(drive)) |
87996204 | 849 | err = -EIO; |
7469aaf6 BZ |
850 | } else |
851 | ide_dma_off(drive); | |
87996204 BZ |
852 | |
853 | /* | |
854 | * lock, clear ->busy flag and unlock before leaving | |
855 | */ | |
856 | spin_lock_irq(&ide_lock); | |
857 | hwif->hwgroup->busy = 0; | |
858 | spin_unlock_irq(&ide_lock); | |
859 | out: | |
860 | return err; | |
1da177e4 | 861 | #else |
1497943e BZ |
862 | if (arg < 0 || arg > 1) |
863 | return -EINVAL; | |
864 | ||
1da177e4 LT |
865 | return -EPERM; |
866 | #endif | |
867 | } | |
868 | ||
7662d046 | 869 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
870 | { |
871 | struct request rq; | |
872 | ||
1497943e BZ |
873 | if (arg < 0 || arg > 255) |
874 | return -EINVAL; | |
875 | ||
26bcb879 | 876 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 877 | return -ENOSYS; |
26bcb879 | 878 | |
1da177e4 LT |
879 | if (drive->special.b.set_tune) |
880 | return -EBUSY; | |
881 | ide_init_drive_cmd(&rq); | |
882 | drive->tune_req = (u8) arg; | |
883 | drive->special.b.set_tune = 1; | |
884 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
885 | return 0; | |
886 | } | |
887 | ||
1497943e BZ |
888 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
889 | { | |
890 | if (drive->no_unmask) | |
891 | return -EPERM; | |
892 | ||
893 | if (arg < 0 || arg > 1) | |
894 | return -EINVAL; | |
895 | ||
896 | if (ide_spin_wait_hwgroup(drive)) | |
897 | return -EBUSY; | |
898 | drive->unmask = arg; | |
899 | spin_unlock_irq(&ide_lock); | |
900 | ||
901 | return 0; | |
902 | } | |
903 | ||
1da177e4 LT |
904 | /** |
905 | * system_bus_clock - clock guess | |
906 | * | |
907 | * External version of the bus clock guess used by very old IDE drivers | |
908 | * for things like VLB timings. Should not be used. | |
909 | */ | |
910 | ||
911 | int system_bus_clock (void) | |
912 | { | |
913 | return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); | |
914 | } | |
915 | ||
916 | EXPORT_SYMBOL(system_bus_clock); | |
917 | ||
b887d2e6 | 918 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
919 | { |
920 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 921 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
922 | struct request rq; |
923 | struct request_pm_state rqpm; | |
924 | ide_task_t args; | |
5e32132b | 925 | int ret; |
1da177e4 | 926 | |
e3a59b4d HR |
927 | /* Call ACPI _GTM only once */ |
928 | if (!(drive->dn % 2)) | |
929 | ide_acpi_get_timing(hwif); | |
930 | ||
1da177e4 LT |
931 | memset(&rq, 0, sizeof(rq)); |
932 | memset(&rqpm, 0, sizeof(rqpm)); | |
933 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 934 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 935 | rq.special = &args; |
c00895ab | 936 | rq.data = &rqpm; |
1da177e4 | 937 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
938 | if (mesg.event == PM_EVENT_PRETHAW) |
939 | mesg.event = PM_EVENT_FREEZE; | |
940 | rqpm.pm_state = mesg.event; | |
1da177e4 | 941 | |
5e32132b SL |
942 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
943 | /* only call ACPI _PS3 after both drivers are suspended */ | |
944 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
945 | && hwif->drives[1].present) | |
946 | || !hwif->drives[0].present | |
947 | || !hwif->drives[1].present)) | |
948 | ide_acpi_set_state(hwif, 0); | |
949 | return ret; | |
1da177e4 LT |
950 | } |
951 | ||
952 | static int generic_ide_resume(struct device *dev) | |
953 | { | |
954 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 955 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
956 | struct request rq; |
957 | struct request_pm_state rqpm; | |
958 | ide_task_t args; | |
0d2157f7 | 959 | int err; |
1da177e4 | 960 | |
e3a59b4d | 961 | /* Call ACPI _STM only once */ |
5e32132b SL |
962 | if (!(drive->dn % 2)) { |
963 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 964 | ide_acpi_push_timing(hwif); |
5e32132b | 965 | } |
e3a59b4d HR |
966 | |
967 | ide_acpi_exec_tfs(drive); | |
968 | ||
1da177e4 LT |
969 | memset(&rq, 0, sizeof(rq)); |
970 | memset(&rqpm, 0, sizeof(rqpm)); | |
971 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 972 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 973 | rq.special = &args; |
c00895ab | 974 | rq.data = &rqpm; |
1da177e4 | 975 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 976 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 977 | |
0d2157f7 LT |
978 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
979 | ||
ce9b2b0a RW |
980 | if (err == 0 && dev->driver) { |
981 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
982 | ||
983 | if (drv->resume) | |
984 | drv->resume(drive); | |
985 | } | |
0d2157f7 LT |
986 | |
987 | return err; | |
1da177e4 LT |
988 | } |
989 | ||
990 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
991 | unsigned int cmd, unsigned long arg) | |
992 | { | |
1497943e | 993 | unsigned long flags; |
1da177e4 | 994 | ide_driver_t *drv; |
1da177e4 | 995 | void __user *p = (void __user *)arg; |
1985026d | 996 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 997 | u8 *val; |
1da177e4 | 998 | |
1497943e BZ |
999 | switch (cmd) { |
1000 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
1001 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
1002 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
1003 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
1004 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
1005 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
1006 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
1007 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
1008 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 1009 | } |
1da177e4 LT |
1010 | |
1011 | switch (cmd) { | |
1da177e4 LT |
1012 | case HDIO_OBSOLETE_IDENTITY: |
1013 | case HDIO_GET_IDENTITY: | |
1014 | if (bdev != bdev->bd_contains) | |
1015 | return -EINVAL; | |
1016 | if (drive->id_read == 0) | |
1017 | return -ENOMSG; | |
1018 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
1019 | return -EFAULT; | |
1020 | return 0; | |
1021 | ||
1022 | case HDIO_GET_NICE: | |
1023 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
1024 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
1025 | drive->nice0 << IDE_NICE_0 | | |
1026 | drive->nice1 << IDE_NICE_1 | | |
1027 | drive->nice2 << IDE_NICE_2, | |
1028 | (long __user *) arg); | |
1029 | ||
1030 | #ifdef CONFIG_IDE_TASK_IOCTL | |
1031 | case HDIO_DRIVE_TASKFILE: | |
1032 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
1033 | return -EACCES; | |
1034 | switch(drive->media) { | |
1035 | case ide_disk: | |
1036 | return ide_taskfile_ioctl(drive, cmd, arg); | |
1037 | default: | |
1038 | return -ENOMSG; | |
1039 | } | |
1040 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
1041 | ||
1042 | case HDIO_DRIVE_CMD: | |
1043 | if (!capable(CAP_SYS_RAWIO)) | |
1044 | return -EACCES; | |
1045 | return ide_cmd_ioctl(drive, cmd, arg); | |
1046 | ||
1047 | case HDIO_DRIVE_TASK: | |
1048 | if (!capable(CAP_SYS_RAWIO)) | |
1049 | return -EACCES; | |
1050 | return ide_task_ioctl(drive, cmd, arg); | |
1051 | ||
1052 | case HDIO_SCAN_HWIF: | |
1053 | { | |
1054 | hw_regs_t hw; | |
1055 | int args[3]; | |
1056 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1057 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
1058 | return -EFAULT; | |
1059 | memset(&hw, 0, sizeof(hw)); | |
1060 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
1061 | (unsigned long) args[1], NULL); | |
1062 | hw.irq = args[2]; | |
cbb010c1 | 1063 | if (ide_register_hw(&hw, NULL, NULL) == -1) |
1da177e4 LT |
1064 | return -EIO; |
1065 | return 0; | |
1066 | } | |
1067 | case HDIO_UNREGISTER_HWIF: | |
1068 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1069 | /* (arg > MAX_HWIFS) checked in function */ | |
1070 | ide_unregister(arg); | |
1071 | return 0; | |
1072 | case HDIO_SET_NICE: | |
1073 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1074 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1075 | return -EPERM; | |
1076 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1077 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1078 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1079 | drive->dsc_overlap = 0; | |
1080 | return -EPERM; | |
1081 | } | |
1082 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1083 | return 0; | |
1084 | case HDIO_DRIVE_RESET: | |
1085 | { | |
1086 | unsigned long flags; | |
1087 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1088 | ||
1089 | /* | |
1090 | * Abort the current command on the | |
1091 | * group if there is one, taking | |
1092 | * care not to allow anything else | |
1093 | * to be queued and to die on the | |
1094 | * spot if we miss one somehow | |
1095 | */ | |
1096 | ||
1097 | spin_lock_irqsave(&ide_lock, flags); | |
1098 | ||
913759ac AC |
1099 | if (HWGROUP(drive)->resetting) { |
1100 | spin_unlock_irqrestore(&ide_lock, flags); | |
1101 | return -EBUSY; | |
1102 | } | |
1103 | ||
1da177e4 LT |
1104 | ide_abort(drive, "drive reset"); |
1105 | ||
125e1874 | 1106 | BUG_ON(HWGROUP(drive)->handler); |
1da177e4 LT |
1107 | |
1108 | /* Ensure nothing gets queued after we | |
1109 | drop the lock. Reset will clear the busy */ | |
1110 | ||
1111 | HWGROUP(drive)->busy = 1; | |
1112 | spin_unlock_irqrestore(&ide_lock, flags); | |
1113 | (void) ide_do_reset(drive); | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
1da177e4 LT |
1118 | case HDIO_GET_BUSSTATE: |
1119 | if (!capable(CAP_SYS_ADMIN)) | |
1120 | return -EACCES; | |
1121 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1122 | return -EFAULT; | |
1123 | return 0; | |
1124 | ||
1125 | case HDIO_SET_BUSSTATE: | |
1126 | if (!capable(CAP_SYS_ADMIN)) | |
1127 | return -EACCES; | |
1128 | if (HWIF(drive)->busproc) | |
1129 | return HWIF(drive)->busproc(drive, (int)arg); | |
1130 | return -EOPNOTSUPP; | |
1131 | default: | |
1132 | return -EINVAL; | |
1133 | } | |
1497943e BZ |
1134 | |
1135 | read_val: | |
f9383c42 | 1136 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1137 | spin_lock_irqsave(&ide_lock, flags); |
1138 | err = *val; | |
1139 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1140 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1141 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1142 | ||
1143 | set_val: | |
1144 | if (bdev != bdev->bd_contains) | |
1145 | err = -EINVAL; | |
1146 | else { | |
1147 | if (!capable(CAP_SYS_ADMIN)) | |
1148 | err = -EACCES; | |
1149 | else { | |
f9383c42 | 1150 | mutex_lock(&ide_setting_mtx); |
1497943e | 1151 | err = setfunc(drive, arg); |
f9383c42 | 1152 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1153 | } |
1154 | } | |
1155 | return err; | |
1da177e4 LT |
1156 | } |
1157 | ||
1158 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1159 | ||
1160 | /* | |
1161 | * stridx() returns the offset of c within s, | |
1162 | * or -1 if c is '\0' or not found within s. | |
1163 | */ | |
1164 | static int __init stridx (const char *s, char c) | |
1165 | { | |
1166 | char *i = strchr(s, c); | |
1167 | return (i && c) ? i - s : -1; | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * match_parm() does parsing for ide_setup(): | |
1172 | * | |
1173 | * 1. the first char of s must be '='. | |
1174 | * 2. if the remainder matches one of the supplied keywords, | |
1175 | * the index (1 based) of the keyword is negated and returned. | |
1176 | * 3. if the remainder is a series of no more than max_vals numbers | |
1177 | * separated by commas, the numbers are saved in vals[] and a | |
1178 | * count of how many were saved is returned. Base10 is assumed, | |
1179 | * and base16 is allowed when prefixed with "0x". | |
1180 | * 4. otherwise, zero is returned. | |
1181 | */ | |
1182 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1183 | { | |
1184 | static const char *decimal = "0123456789"; | |
1185 | static const char *hex = "0123456789abcdef"; | |
1186 | int i, n; | |
1187 | ||
1188 | if (*s++ == '=') { | |
1189 | /* | |
1190 | * Try matching against the supplied keywords, | |
1191 | * and return -(index+1) if we match one | |
1192 | */ | |
1193 | if (keywords != NULL) { | |
1194 | for (i = 0; *keywords != NULL; ++i) { | |
1195 | if (!strcmp(s, *keywords++)) | |
1196 | return -(i+1); | |
1197 | } | |
1198 | } | |
1199 | /* | |
1200 | * Look for a series of no more than "max_vals" | |
1201 | * numeric values separated by commas, in base10, | |
1202 | * or base16 when prefixed with "0x". | |
1203 | * Return a count of how many were found. | |
1204 | */ | |
1205 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1206 | vals[n] = i; | |
1207 | while ((i = stridx(decimal, *++s)) >= 0) | |
1208 | vals[n] = (vals[n] * 10) + i; | |
1209 | if (*s == 'x' && !vals[n]) { | |
1210 | while ((i = stridx(hex, *++s)) >= 0) | |
1211 | vals[n] = (vals[n] * 0x10) + i; | |
1212 | } | |
1213 | if (++n == max_vals) | |
1214 | break; | |
1215 | if (*s == ',' || *s == ';') | |
1216 | ++s; | |
1217 | } | |
1218 | if (!*s) | |
1219 | return n; | |
1220 | } | |
1221 | return 0; /* zero = nothing matched */ | |
1222 | } | |
1223 | ||
84913882 | 1224 | extern int probe_ali14xx; |
84913882 | 1225 | extern int probe_umc8672; |
84913882 | 1226 | extern int probe_dtc2278; |
84913882 | 1227 | extern int probe_ht6560b; |
84913882 | 1228 | extern int probe_qd65xx; |
ade2daf9 | 1229 | extern int cmd640_vlb; |
1da177e4 LT |
1230 | |
1231 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1232 | ||
1233 | /* | |
1234 | * ide_setup() gets called VERY EARLY during initialization, | |
1235 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1236 | * | |
1237 | * Remember to update Documentation/ide.txt if you change something here. | |
1238 | */ | |
1239 | static int __init ide_setup(char *s) | |
1240 | { | |
1241 | int i, vals[3]; | |
1242 | ide_hwif_t *hwif; | |
1243 | ide_drive_t *drive; | |
1244 | unsigned int hw, unit; | |
1245 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1246 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1247 | ||
1248 | ||
1249 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1250 | return 0; /* driver and not us */ | |
1251 | ||
1252 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1253 | return 0; | |
1254 | ||
1255 | printk(KERN_INFO "ide_setup: %s", s); | |
1256 | init_ide_data (); | |
1257 | ||
1258 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1259 | if (!strcmp(s, "ide=doubler")) { | |
1260 | extern int ide_doubler; | |
1261 | ||
1262 | printk(" : Enabled support for IDE doublers\n"); | |
1263 | ide_doubler = 1; | |
1264 | return 1; | |
1265 | } | |
1266 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1267 | ||
1268 | if (!strcmp(s, "ide=nodma")) { | |
1269 | printk(" : Prevented DMA\n"); | |
1270 | noautodma = 1; | |
c223701c | 1271 | goto obsolete_option; |
1da177e4 LT |
1272 | } |
1273 | ||
6d208b39 | 1274 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 LT |
1275 | if (!strcmp(s, "ide=reverse")) { |
1276 | ide_scan_direction = 1; | |
1277 | printk(" : Enabled support for IDE inverse scan order.\n"); | |
1278 | return 1; | |
1279 | } | |
6d208b39 | 1280 | #endif |
1da177e4 | 1281 | |
e3a59b4d HR |
1282 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1283 | if (!strcmp(s, "ide=noacpi")) { | |
1284 | //printk(" : Disable IDE ACPI support.\n"); | |
1285 | ide_noacpi = 1; | |
1286 | return 1; | |
1287 | } | |
1288 | if (!strcmp(s, "ide=acpigtf")) { | |
1289 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1290 | ide_noacpitfs = 0; | |
1291 | return 1; | |
1292 | } | |
1293 | if (!strcmp(s, "ide=acpionboot")) { | |
1294 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1295 | ide_noacpionboot = 0; | |
1296 | return 1; | |
1297 | } | |
1298 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1299 | ||
1da177e4 LT |
1300 | /* |
1301 | * Look for drive options: "hdx=" | |
1302 | */ | |
1303 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1304 | const char *hd_words[] = { | |
c223701c | 1305 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
9e47be0c | 1306 | "autotune", "noautotune", "-8", "-9", "-10", |
36193484 | 1307 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1308 | unit = s[2] - 'a'; |
1309 | hw = unit / MAX_DRIVES; | |
1310 | unit = unit % MAX_DRIVES; | |
1311 | hwif = &ide_hwifs[hw]; | |
1312 | drive = &hwif->drives[unit]; | |
1313 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1314 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
1315 | goto done; | |
1316 | } | |
1317 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1318 | case -1: /* "none" */ | |
1319 | case -2: /* "noprobe" */ | |
1320 | drive->noprobe = 1; | |
1321 | goto done; | |
1322 | case -3: /* "nowerr" */ | |
1323 | drive->bad_wstat = BAD_R_STAT; | |
1324 | hwif->noprobe = 0; | |
1325 | goto done; | |
1326 | case -4: /* "cdrom" */ | |
1327 | drive->present = 1; | |
1328 | drive->media = ide_cdrom; | |
1329 | /* an ATAPI device ignores DRDY */ | |
1330 | drive->ready_stat = 0; | |
1331 | hwif->noprobe = 0; | |
1332 | goto done; | |
c223701c BZ |
1333 | case -5: /* nodma */ |
1334 | drive->nodma = 1; | |
1335 | goto done; | |
1da177e4 LT |
1336 | case -6: /* "autotune" */ |
1337 | drive->autotune = IDE_TUNE_AUTO; | |
1338 | goto obsolete_option; | |
1339 | case -7: /* "noautotune" */ | |
1340 | drive->autotune = IDE_TUNE_NOAUTO; | |
1341 | goto obsolete_option; | |
36193484 JA |
1342 | case -11: /* noflush */ |
1343 | drive->noflush = 1; | |
1344 | goto done; | |
1da177e4 LT |
1345 | case -12: /* "remap" */ |
1346 | drive->remap_0_to_1 = 1; | |
1347 | goto done; | |
1348 | case -13: /* "remap63" */ | |
1349 | drive->sect0 = 63; | |
1350 | goto done; | |
1351 | case -14: /* "scsi" */ | |
1352 | drive->scsi = 1; | |
1353 | goto done; | |
1354 | case 3: /* cyl,head,sect */ | |
1355 | drive->media = ide_disk; | |
1356 | drive->ready_stat = READY_STAT; | |
1357 | drive->cyl = drive->bios_cyl = vals[0]; | |
1358 | drive->head = drive->bios_head = vals[1]; | |
1359 | drive->sect = drive->bios_sect = vals[2]; | |
1360 | drive->present = 1; | |
1361 | drive->forced_geom = 1; | |
1362 | hwif->noprobe = 0; | |
1363 | goto done; | |
1364 | default: | |
1365 | goto bad_option; | |
1366 | } | |
1367 | } | |
1368 | ||
1369 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1370 | goto bad_option; | |
1371 | /* | |
1372 | * Look for bus speed option: "idebus=" | |
1373 | */ | |
1374 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1375 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1376 | goto bad_option; | |
1377 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1378 | idebus_parameter = vals[0]; | |
1379 | } else | |
1380 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1381 | goto done; | |
1382 | } | |
1383 | /* | |
1384 | * Look for interface options: "idex=" | |
1385 | */ | |
1386 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1387 | /* | |
1388 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1389 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1390 | */ | |
1391 | static const char *ide_words[] = { | |
b6209a90 | 1392 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1393 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1394 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1395 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
9239b333 BZ |
1396 | |
1397 | hw_regs_t hwregs; | |
1398 | ||
1da177e4 LT |
1399 | hw = s[3] - '0'; |
1400 | hwif = &ide_hwifs[hw]; | |
1401 | i = match_parm(&s[4], ide_words, vals, 3); | |
1402 | ||
1403 | /* | |
1404 | * Cryptic check to ensure chipset not already set for hwif. | |
1405 | * Note: we can't depend on hwif->chipset here. | |
1406 | */ | |
1407 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1408 | /* chipset already specified */ | |
1409 | if (is_chipset_set[hw]) | |
1410 | goto bad_option; | |
1411 | if (i > -18 && i <= -11) { | |
1412 | /* these drivers are for "ide0=" only */ | |
1413 | if (hw != 0) | |
1414 | goto bad_hwif; | |
1415 | /* chipset already specified for 2nd port */ | |
1416 | if (is_chipset_set[hw+1]) | |
1417 | goto bad_option; | |
1418 | } | |
1419 | is_chipset_set[hw] = 1; | |
1420 | printk("\n"); | |
1421 | } | |
1422 | ||
1423 | switch (i) { | |
1424 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1425 | case -17: /* "ali14xx" */ | |
1426 | probe_ali14xx = 1; | |
1427 | goto done; | |
1428 | #endif | |
1429 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1430 | case -16: /* "umc8672" */ | |
1431 | probe_umc8672 = 1; | |
1432 | goto done; | |
1433 | #endif | |
1434 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1435 | case -15: /* "dtc2278" */ | |
1436 | probe_dtc2278 = 1; | |
1437 | goto done; | |
1438 | #endif | |
1439 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1440 | case -14: /* "cmd640_vlb" */ | |
1da177e4 LT |
1441 | cmd640_vlb = 1; |
1442 | goto done; | |
1da177e4 LT |
1443 | #endif |
1444 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1445 | case -13: /* "ht6560b" */ | |
1446 | probe_ht6560b = 1; | |
1447 | goto done; | |
1448 | #endif | |
1449 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1450 | case -12: /* "qd65xx" */ | |
1451 | probe_qd65xx = 1; | |
1452 | goto done; | |
1453 | #endif | |
1454 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1455 | case -11: /* "four" drives on one set of ports */ | |
1456 | { | |
1457 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1458 | mate->drives[0].select.all ^= 0x20; | |
1459 | mate->drives[1].select.all ^= 0x20; | |
1460 | hwif->chipset = mate->chipset = ide_4drives; | |
1461 | mate->irq = hwif->irq; | |
1462 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1463 | hwif->mate = mate; |
1464 | mate->mate = hwif; | |
1465 | hwif->serialized = mate->serialized = 1; | |
1466 | goto obsolete_option; | |
1da177e4 LT |
1467 | } |
1468 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1469 | case -10: /* minus10 */ | |
1470 | case -9: /* minus9 */ | |
1471 | case -8: /* minus8 */ | |
1b516940 | 1472 | case -6: |
b6209a90 BZ |
1473 | case -4: |
1474 | case -3: | |
1da177e4 LT |
1475 | goto bad_option; |
1476 | case -7: /* ata66 */ | |
1477 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1478 | /* |
1479 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1480 | * cable detection is also overriden. | |
1481 | */ | |
1482 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1483 | goto obsolete_option; |
1484 | #else | |
1485 | goto bad_hwif; | |
1486 | #endif | |
1da177e4 LT |
1487 | case -5: /* "reset" */ |
1488 | hwif->reset = 1; | |
1489 | goto obsolete_option; | |
1da177e4 | 1490 | case -2: /* "serialize" */ |
1da177e4 LT |
1491 | hwif->mate = &ide_hwifs[hw^1]; |
1492 | hwif->mate->mate = hwif; | |
1493 | hwif->serialized = hwif->mate->serialized = 1; | |
1494 | goto obsolete_option; | |
1495 | ||
1496 | case -1: /* "noprobe" */ | |
1497 | hwif->noprobe = 1; | |
1498 | goto done; | |
1499 | ||
1500 | case 1: /* base */ | |
1501 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1502 | case 2: /* base,ctl */ | |
1503 | vals[2] = 0; /* default irq = probe for it */ | |
1504 | case 3: /* base,ctl,irq */ | |
9239b333 BZ |
1505 | memset(&hwregs, 0, sizeof(hwregs)); |
1506 | ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq); | |
1507 | memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports)); | |
1da177e4 LT |
1508 | hwif->irq = vals[2]; |
1509 | hwif->noprobe = 0; | |
1510 | hwif->chipset = ide_forced; | |
1511 | goto obsolete_option; | |
1512 | ||
1513 | case 0: goto bad_option; | |
1514 | default: | |
1515 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1516 | return 1; | |
1517 | } | |
1518 | } | |
1519 | bad_option: | |
1520 | printk(" -- BAD OPTION\n"); | |
1521 | return 1; | |
1522 | obsolete_option: | |
1523 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1524 | return 1; | |
1525 | bad_hwif: | |
1526 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1527 | done: | |
1528 | printk("\n"); | |
1529 | return 1; | |
1530 | } | |
1531 | ||
1da177e4 LT |
1532 | EXPORT_SYMBOL(ide_lock); |
1533 | ||
8604affd BZ |
1534 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1535 | { | |
1536 | return 1; | |
1537 | } | |
1538 | ||
263756ec KS |
1539 | static char *media_string(ide_drive_t *drive) |
1540 | { | |
1541 | switch (drive->media) { | |
1542 | case ide_disk: | |
1543 | return "disk"; | |
1544 | case ide_cdrom: | |
1545 | return "cdrom"; | |
1546 | case ide_tape: | |
1547 | return "tape"; | |
1548 | case ide_floppy: | |
1549 | return "floppy"; | |
a7a832de DK |
1550 | case ide_optical: |
1551 | return "optical"; | |
263756ec KS |
1552 | default: |
1553 | return "UNKNOWN"; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1558 | { | |
1559 | ide_drive_t *drive = to_ide_device(dev); | |
1560 | return sprintf(buf, "%s\n", media_string(drive)); | |
1561 | } | |
1562 | ||
1563 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1564 | { | |
1565 | ide_drive_t *drive = to_ide_device(dev); | |
1566 | return sprintf(buf, "%s\n", drive->name); | |
1567 | } | |
1568 | ||
1569 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1570 | { | |
1571 | ide_drive_t *drive = to_ide_device(dev); | |
1572 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1573 | } | |
1574 | ||
e11b9035 BZ |
1575 | static ssize_t model_show(struct device *dev, struct device_attribute *attr, |
1576 | char *buf) | |
1577 | { | |
1578 | ide_drive_t *drive = to_ide_device(dev); | |
1579 | return sprintf(buf, "%s\n", drive->id->model); | |
1580 | } | |
1581 | ||
1582 | static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, | |
1583 | char *buf) | |
1584 | { | |
1585 | ide_drive_t *drive = to_ide_device(dev); | |
1586 | return sprintf(buf, "%s\n", drive->id->fw_rev); | |
1587 | } | |
1588 | ||
1589 | static ssize_t serial_show(struct device *dev, struct device_attribute *attr, | |
1590 | char *buf) | |
1591 | { | |
1592 | ide_drive_t *drive = to_ide_device(dev); | |
1593 | return sprintf(buf, "%s\n", drive->id->serial_no); | |
1594 | } | |
1595 | ||
263756ec KS |
1596 | static struct device_attribute ide_dev_attrs[] = { |
1597 | __ATTR_RO(media), | |
1598 | __ATTR_RO(drivename), | |
1599 | __ATTR_RO(modalias), | |
e11b9035 BZ |
1600 | __ATTR_RO(model), |
1601 | __ATTR_RO(firmware), | |
1602 | __ATTR(serial, 0400, serial_show, NULL), | |
263756ec KS |
1603 | __ATTR_NULL |
1604 | }; | |
1605 | ||
7eff2e7a | 1606 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1607 | { |
1608 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1609 | |
1610 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1611 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1612 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1613 | return 0; |
1614 | } | |
1615 | ||
4031bbe4 RK |
1616 | static int generic_ide_probe(struct device *dev) |
1617 | { | |
1618 | ide_drive_t *drive = to_ide_device(dev); | |
1619 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1620 | ||
1621 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1622 | } | |
1623 | ||
1624 | static int generic_ide_remove(struct device *dev) | |
1625 | { | |
1626 | ide_drive_t *drive = to_ide_device(dev); | |
1627 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1628 | ||
1629 | if (drv->remove) | |
1630 | drv->remove(drive); | |
1631 | ||
1632 | return 0; | |
1633 | } | |
1634 | ||
1635 | static void generic_ide_shutdown(struct device *dev) | |
1636 | { | |
1637 | ide_drive_t *drive = to_ide_device(dev); | |
1638 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1639 | ||
1640 | if (dev->driver && drv->shutdown) | |
1641 | drv->shutdown(drive); | |
1642 | } | |
1643 | ||
1da177e4 LT |
1644 | struct bus_type ide_bus_type = { |
1645 | .name = "ide", | |
8604affd | 1646 | .match = ide_bus_match, |
263756ec | 1647 | .uevent = ide_uevent, |
4031bbe4 RK |
1648 | .probe = generic_ide_probe, |
1649 | .remove = generic_ide_remove, | |
1650 | .shutdown = generic_ide_shutdown, | |
263756ec | 1651 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1652 | .suspend = generic_ide_suspend, |
1653 | .resume = generic_ide_resume, | |
1654 | }; | |
1655 | ||
8604affd BZ |
1656 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1657 | ||
1da177e4 LT |
1658 | /* |
1659 | * This is gets invoked once during initialization, to set *everything* up | |
1660 | */ | |
1661 | static int __init ide_init(void) | |
1662 | { | |
349ae23f RD |
1663 | int ret; |
1664 | ||
1da177e4 | 1665 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); |
1da177e4 LT |
1666 | system_bus_speed = ide_system_bus_speed(); |
1667 | ||
349ae23f RD |
1668 | ret = bus_register(&ide_bus_type); |
1669 | if (ret < 0) { | |
1670 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1671 | return ret; | |
1672 | } | |
1da177e4 LT |
1673 | |
1674 | init_ide_data(); | |
1675 | ||
5cbf79cd | 1676 | proc_ide_create(); |
1da177e4 | 1677 | |
1da177e4 LT |
1678 | return 0; |
1679 | } | |
1680 | ||
1681 | #ifdef MODULE | |
1682 | static char *options = NULL; | |
1683 | module_param(options, charp, 0); | |
1684 | MODULE_LICENSE("GPL"); | |
1685 | ||
1686 | static void __init parse_options (char *line) | |
1687 | { | |
1688 | char *next = line; | |
1689 | ||
1690 | if (line == NULL || !*line) | |
1691 | return; | |
1692 | while ((line = next) != NULL) { | |
1693 | if ((next = strchr(line,' ')) != NULL) | |
1694 | *next++ = 0; | |
1695 | if (!ide_setup(line)) | |
1696 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1697 | } | |
1698 | } | |
1699 | ||
fbd8ad30 | 1700 | int __init init_module (void) |
1da177e4 LT |
1701 | { |
1702 | parse_options(options); | |
1703 | return ide_init(); | |
1704 | } | |
1705 | ||
eb797227 | 1706 | void __exit cleanup_module (void) |
1da177e4 LT |
1707 | { |
1708 | int index; | |
1709 | ||
1710 | for (index = 0; index < MAX_HWIFS; ++index) | |
1711 | ide_unregister(index); | |
1712 | ||
1da177e4 | 1713 | proc_ide_destroy(); |
1da177e4 LT |
1714 | |
1715 | bus_unregister(&ide_bus_type); | |
1716 | } | |
1717 | ||
1718 | #else /* !MODULE */ | |
1719 | ||
1720 | __setup("", ide_setup); | |
1721 | ||
1722 | module_init(ide_init); | |
1723 | ||
1724 | #endif /* MODULE */ |