Commit | Line | Data |
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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 |
1da177e4 LT |
98 | static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
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 | */ | |
119 | static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) | |
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 | } | |
162 | ||
163 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
164 | { | |
165 | hw_regs_t hw; | |
166 | ||
167 | memset(&hw, 0, sizeof(hw_regs_t)); | |
168 | ||
169 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
170 | ||
171 | memcpy(&hwif->hw, &hw, sizeof(hw)); | |
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 | ||
181 | extern void ide_arm_init(void); | |
182 | ||
183 | /* | |
184 | * init_ide_data() sets reasonable default values into all fields | |
185 | * of all instances of the hwifs and drives, but only on the first call. | |
186 | * Subsequent calls have no effect (they don't wipe out anything). | |
187 | * | |
188 | * This routine is normally called at driver initialization time, | |
189 | * but may also be called MUCH earlier during kernel "command-line" | |
190 | * parameter processing. As such, we cannot depend on any other parts | |
191 | * of the kernel (such as memory allocation) to be functioning yet. | |
192 | * | |
193 | * This is too bad, as otherwise we could dynamically allocate the | |
194 | * ide_drive_t structs as needed, rather than always consuming memory | |
195 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
196 | * | |
197 | * FIXME: We should stuff the setup data into __init and copy the | |
198 | * relevant hwifs/allocate them properly during boot. | |
199 | */ | |
200 | #define MAGIC_COOKIE 0x12345678 | |
201 | static void __init init_ide_data (void) | |
202 | { | |
203 | ide_hwif_t *hwif; | |
204 | unsigned int index; | |
205 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
206 | ||
207 | if (magic_cookie != MAGIC_COOKIE) | |
208 | return; /* already initialized */ | |
209 | magic_cookie = 0; | |
210 | ||
211 | /* Initialise all interface structures */ | |
212 | for (index = 0; index < MAX_HWIFS; ++index) { | |
213 | hwif = &ide_hwifs[index]; | |
214 | init_hwif_data(hwif, index); | |
215 | init_hwif_default(hwif, index); | |
216 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
217 | hwif->irq = hwif->hw.irq = | |
218 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); | |
219 | #endif | |
220 | } | |
221 | #ifdef CONFIG_IDE_ARM | |
1da177e4 | 222 | ide_arm_init(); |
1da177e4 LT |
223 | #endif |
224 | } | |
225 | ||
226 | /** | |
227 | * ide_system_bus_speed - guess bus speed | |
228 | * | |
229 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
230 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
231 | * The default is 40 for known PCI systems, 50 otherwise. | |
232 | * The "idebus=xx" parameter can be used to override this value. | |
233 | * The actual value to be used is computed/displayed the first time | |
234 | * through. Drivers should only use this as a last resort. | |
235 | * | |
236 | * Returns a guessed speed in MHz. | |
237 | */ | |
238 | ||
239 | static int ide_system_bus_speed(void) | |
240 | { | |
241 | #ifdef CONFIG_PCI | |
242 | static struct pci_device_id pci_default[] = { | |
243 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
244 | { } | |
245 | }; | |
246 | #else | |
247 | #define pci_default 0 | |
248 | #endif /* CONFIG_PCI */ | |
249 | ||
250 | if (!system_bus_speed) { | |
251 | if (idebus_parameter) { | |
252 | /* user supplied value */ | |
253 | system_bus_speed = idebus_parameter; | |
254 | } else if (pci_dev_present(pci_default)) { | |
255 | /* safe default value for PCI */ | |
256 | system_bus_speed = 33; | |
257 | } else { | |
258 | /* safe default value for VESA and PCI */ | |
259 | system_bus_speed = 50; | |
260 | } | |
261 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " | |
262 | "for PIO modes%s\n", system_bus_speed, | |
263 | idebus_parameter ? "" : "; override with idebus=xx"); | |
264 | } | |
265 | return system_bus_speed; | |
266 | } | |
267 | ||
baa8f3e9 BZ |
268 | ide_hwif_t * ide_find_port(unsigned long base) |
269 | { | |
270 | ide_hwif_t *hwif; | |
271 | int i; | |
272 | ||
273 | for (i = 0; i < MAX_HWIFS; i++) { | |
274 | hwif = &ide_hwifs[i]; | |
275 | if (hwif->io_ports[IDE_DATA_OFFSET] == base) | |
276 | goto found; | |
277 | } | |
278 | ||
279 | for (i = 0; i < MAX_HWIFS; i++) { | |
280 | hwif = &ide_hwifs[i]; | |
281 | if (hwif->io_ports[IDE_DATA_OFFSET] == 0) | |
282 | goto found; | |
283 | } | |
284 | ||
285 | hwif = NULL; | |
286 | found: | |
287 | return hwif; | |
288 | } | |
289 | ||
290 | EXPORT_SYMBOL_GPL(ide_find_port); | |
291 | ||
1da177e4 LT |
292 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
293 | unsigned long addr, int num) | |
294 | { | |
295 | struct resource *res = request_region(addr, num, hwif->name); | |
296 | ||
297 | if (!res) | |
298 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
299 | hwif->name, addr, addr+num-1); | |
300 | return res; | |
301 | } | |
302 | ||
303 | /** | |
304 | * ide_hwif_request_regions - request resources for IDE | |
305 | * @hwif: interface to use | |
306 | * | |
307 | * Requests all the needed resources for an interface. | |
308 | * Right now core IDE code does this work which is deeply wrong. | |
309 | * MMIO leaves it to the controller driver, | |
310 | * PIO will migrate this way over time. | |
311 | */ | |
312 | ||
313 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
314 | { | |
315 | unsigned long addr; | |
316 | unsigned int i; | |
317 | ||
2ad1e558 | 318 | if (hwif->mmio) |
1da177e4 | 319 | return 0; |
1da177e4 LT |
320 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
321 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
322 | goto control_region_busy; | |
323 | hwif->straight8 = 0; | |
324 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
325 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
326 | if (!hwif_request_region(hwif, addr, 8)) | |
327 | goto data_region_busy; | |
328 | hwif->straight8 = 1; | |
329 | return 0; | |
330 | } | |
331 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
332 | addr = hwif->io_ports[i]; | |
333 | if (!hwif_request_region(hwif, addr, 1)) { | |
334 | while (--i) | |
335 | release_region(addr, 1); | |
336 | goto data_region_busy; | |
337 | } | |
338 | } | |
339 | return 0; | |
340 | ||
341 | data_region_busy: | |
342 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
343 | if (addr) | |
344 | release_region(addr, 1); | |
345 | control_region_busy: | |
346 | /* If any errors are return, we drop the hwif interface. */ | |
347 | return -EBUSY; | |
348 | } | |
349 | ||
350 | /** | |
351 | * ide_hwif_release_regions - free IDE resources | |
352 | * | |
353 | * Note that we only release the standard ports, | |
354 | * and do not even try to handle any extra ports | |
355 | * allocated for weird IDE interface chipsets. | |
356 | * | |
357 | * Note also that we don't yet handle mmio resources here. More | |
358 | * importantly our caller should be doing this so we need to | |
359 | * restructure this as a helper function for drivers. | |
360 | */ | |
361 | ||
362 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
363 | { | |
364 | u32 i = 0; | |
365 | ||
2ad1e558 | 366 | if (hwif->mmio) |
1da177e4 LT |
367 | return; |
368 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
369 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
370 | if (hwif->straight8) { | |
371 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
372 | return; | |
373 | } | |
374 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
375 | if (hwif->io_ports[i]) | |
376 | release_region(hwif->io_ports[i], 1); | |
377 | } | |
378 | ||
379 | /** | |
380 | * ide_hwif_restore - restore hwif to template | |
381 | * @hwif: hwif to update | |
382 | * @tmp_hwif: template | |
383 | * | |
020e322d | 384 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
385 | * from the template. |
386 | */ | |
387 | ||
388 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
389 | { | |
390 | hwif->hwgroup = tmp_hwif->hwgroup; | |
391 | ||
392 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
393 | ||
394 | hwif->proc = tmp_hwif->proc; | |
395 | ||
396 | hwif->major = tmp_hwif->major; | |
397 | hwif->straight8 = tmp_hwif->straight8; | |
398 | hwif->bus_state = tmp_hwif->bus_state; | |
399 | ||
6a824c92 BZ |
400 | hwif->host_flags = tmp_hwif->host_flags; |
401 | ||
4099d143 BZ |
402 | hwif->pio_mask = tmp_hwif->pio_mask; |
403 | ||
1da177e4 LT |
404 | hwif->ultra_mask = tmp_hwif->ultra_mask; |
405 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
406 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
407 | ||
49521f97 BZ |
408 | hwif->cbl = tmp_hwif->cbl; |
409 | ||
1da177e4 LT |
410 | hwif->chipset = tmp_hwif->chipset; |
411 | hwif->hold = tmp_hwif->hold; | |
412 | ||
413 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
414 | hwif->pci_dev = tmp_hwif->pci_dev; | |
415 | hwif->cds = tmp_hwif->cds; | |
416 | #endif | |
417 | ||
fd9bb539 BZ |
418 | hwif->fixup = tmp_hwif->fixup; |
419 | ||
26bcb879 | 420 | hwif->set_pio_mode = tmp_hwif->set_pio_mode; |
88b2b32b | 421 | hwif->set_dma_mode = tmp_hwif->set_dma_mode; |
b4e44369 | 422 | hwif->mdma_filter = tmp_hwif->mdma_filter; |
2d5eaa6d | 423 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
424 | hwif->selectproc = tmp_hwif->selectproc; |
425 | hwif->reset_poll = tmp_hwif->reset_poll; | |
426 | hwif->pre_reset = tmp_hwif->pre_reset; | |
427 | hwif->resetproc = tmp_hwif->resetproc; | |
428 | hwif->intrproc = tmp_hwif->intrproc; | |
429 | hwif->maskproc = tmp_hwif->maskproc; | |
430 | hwif->quirkproc = tmp_hwif->quirkproc; | |
431 | hwif->busproc = tmp_hwif->busproc; | |
432 | ||
433 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
434 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
435 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
436 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
437 | ||
438 | hwif->dma_setup = tmp_hwif->dma_setup; | |
439 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
440 | hwif->dma_start = tmp_hwif->dma_start; | |
441 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
1da177e4 | 442 | hwif->ide_dma_on = tmp_hwif->ide_dma_on; |
7469aaf6 | 443 | hwif->dma_off_quietly = tmp_hwif->dma_off_quietly; |
1da177e4 | 444 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 445 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
ccf35289 | 446 | hwif->dma_host_on = tmp_hwif->dma_host_on; |
7469aaf6 | 447 | hwif->dma_host_off = tmp_hwif->dma_host_off; |
841d2a9b | 448 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 449 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
450 | |
451 | hwif->OUTB = tmp_hwif->OUTB; | |
452 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
453 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
454 | hwif->OUTSW = tmp_hwif->OUTSW; |
455 | hwif->OUTSL = tmp_hwif->OUTSL; | |
456 | ||
457 | hwif->INB = tmp_hwif->INB; | |
458 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
459 | hwif->INSW = tmp_hwif->INSW; |
460 | hwif->INSL = tmp_hwif->INSL; | |
461 | ||
462 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
463 | ||
464 | hwif->mmio = tmp_hwif->mmio; | |
465 | hwif->rqsize = tmp_hwif->rqsize; | |
1da177e4 LT |
466 | |
467 | #ifndef CONFIG_BLK_DEV_IDECS | |
468 | hwif->irq = tmp_hwif->irq; | |
469 | #endif | |
470 | ||
471 | hwif->dma_base = tmp_hwif->dma_base; | |
472 | hwif->dma_master = tmp_hwif->dma_master; | |
473 | hwif->dma_command = tmp_hwif->dma_command; | |
474 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
475 | hwif->dma_status = tmp_hwif->dma_status; | |
476 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
477 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
478 | ||
1da177e4 LT |
479 | hwif->config_data = tmp_hwif->config_data; |
480 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
481 | hwif->extra_base = tmp_hwif->extra_base; |
482 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
483 | |
484 | hwif->hwif_data = tmp_hwif->hwif_data; | |
485 | } | |
486 | ||
487 | /** | |
020e322d | 488 | * ide_unregister - free an IDE interface |
1da177e4 LT |
489 | * @index: index of interface (will change soon to a pointer) |
490 | * | |
491 | * Perform the final unregister of an IDE interface. At the moment | |
492 | * we don't refcount interfaces so this will also get split up. | |
493 | * | |
494 | * Locking: | |
495 | * The caller must not hold the IDE locks | |
496 | * The drive present/vanishing is not yet properly locked | |
497 | * Take care with the callbacks. These have been split to avoid | |
498 | * deadlocking the IDE layer. The shutdown callback is called | |
499 | * before we take the lock and free resources. It is up to the | |
500 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
501 | * the interface will not be reopened (present/vanishing locking |
502 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
503 | * call the cleanup callback with the ide locks held. |
504 | * | |
505 | * Unregister restores the hwif structures to the default state. | |
506 | * This is raving bonkers. | |
507 | */ | |
508 | ||
509 | void ide_unregister(unsigned int index) | |
510 | { | |
511 | ide_drive_t *drive; | |
512 | ide_hwif_t *hwif, *g; | |
ef29888e | 513 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 514 | ide_hwgroup_t *hwgroup; |
8604affd | 515 | int irq_count = 0, unit; |
1da177e4 LT |
516 | |
517 | BUG_ON(index >= MAX_HWIFS); | |
518 | ||
519 | BUG_ON(in_interrupt()); | |
520 | BUG_ON(irqs_disabled()); | |
ef29888e | 521 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
522 | spin_lock_irq(&ide_lock); |
523 | hwif = &ide_hwifs[index]; | |
524 | if (!hwif->present) | |
525 | goto abort; | |
526 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
527 | drive = &hwif->drives[unit]; | |
94f6c59d | 528 | if (!drive->present) |
1da177e4 | 529 | continue; |
8604affd BZ |
530 | spin_unlock_irq(&ide_lock); |
531 | device_unregister(&drive->gendev); | |
f36d4024 | 532 | wait_for_completion(&drive->gendev_rel_comp); |
8604affd | 533 | spin_lock_irq(&ide_lock); |
1da177e4 LT |
534 | } |
535 | hwif->present = 0; | |
536 | ||
537 | spin_unlock_irq(&ide_lock); | |
538 | ||
5cbf79cd | 539 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
540 | |
541 | hwgroup = hwif->hwgroup; | |
542 | /* | |
543 | * free the irq if we were the only hwif using it | |
544 | */ | |
545 | g = hwgroup->hwif; | |
546 | do { | |
547 | if (g->irq == hwif->irq) | |
548 | ++irq_count; | |
549 | g = g->next; | |
550 | } while (g != hwgroup->hwif); | |
551 | if (irq_count == 1) | |
552 | free_irq(hwif->irq, hwgroup); | |
553 | ||
554 | spin_lock_irq(&ide_lock); | |
555 | /* | |
556 | * Note that we only release the standard ports, | |
557 | * and do not even try to handle any extra ports | |
558 | * allocated for weird IDE interface chipsets. | |
559 | */ | |
560 | ide_hwif_release_regions(hwif); | |
561 | ||
562 | /* | |
563 | * Remove us from the hwgroup, and free | |
564 | * the hwgroup if we were the only member | |
565 | */ | |
1da177e4 LT |
566 | if (hwif->next == hwif) { |
567 | BUG_ON(hwgroup->hwif != hwif); | |
568 | kfree(hwgroup); | |
569 | } else { | |
570 | /* There is another interface in hwgroup. | |
571 | * Unlink us, and set hwgroup->drive and ->hwif to | |
572 | * something sane. | |
573 | */ | |
574 | g = hwgroup->hwif; | |
575 | while (g->next != hwif) | |
576 | g = g->next; | |
577 | g->next = hwif->next; | |
578 | if (hwgroup->hwif == hwif) { | |
579 | /* Chose a random hwif for hwgroup->hwif. | |
580 | * It's guaranteed that there are no drives | |
581 | * left in the hwgroup. | |
582 | */ | |
583 | BUG_ON(hwgroup->drive != NULL); | |
584 | hwgroup->hwif = g; | |
585 | } | |
586 | BUG_ON(hwgroup->hwif == hwif); | |
587 | } | |
588 | ||
589 | /* More messed up locking ... */ | |
590 | spin_unlock_irq(&ide_lock); | |
591 | device_unregister(&hwif->gendev); | |
f36d4024 | 592 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
593 | |
594 | /* | |
595 | * Remove us from the kernel's knowledge | |
596 | */ | |
597 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
598 | kfree(hwif->sg_table); | |
599 | unregister_blkdev(hwif->major, hwif->name); | |
600 | spin_lock_irq(&ide_lock); | |
601 | ||
602 | if (hwif->dma_base) { | |
603 | (void) ide_release_dma(hwif); | |
604 | ||
605 | hwif->dma_base = 0; | |
606 | hwif->dma_master = 0; | |
607 | hwif->dma_command = 0; | |
608 | hwif->dma_vendor1 = 0; | |
609 | hwif->dma_status = 0; | |
610 | hwif->dma_vendor3 = 0; | |
611 | hwif->dma_prdtable = 0; | |
020e322d SS |
612 | |
613 | hwif->extra_base = 0; | |
614 | hwif->extra_ports = 0; | |
1da177e4 LT |
615 | } |
616 | ||
617 | /* copy original settings */ | |
618 | tmp_hwif = *hwif; | |
619 | ||
620 | /* restore hwif data to pristine status */ | |
621 | init_hwif_data(hwif, index); | |
622 | init_hwif_default(hwif, index); | |
623 | ||
624 | ide_hwif_restore(hwif, &tmp_hwif); | |
625 | ||
626 | abort: | |
627 | spin_unlock_irq(&ide_lock); | |
ef29888e | 628 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
629 | } |
630 | ||
631 | EXPORT_SYMBOL(ide_unregister); | |
632 | ||
633 | ||
634 | /** | |
635 | * ide_setup_ports - set up IDE interface ports | |
636 | * @hw: register descriptions | |
637 | * @base: base register | |
638 | * @offsets: table of register offsets | |
639 | * @ctrl: control register | |
640 | * @ack_irq: IRQ ack | |
641 | * @irq: interrupt lie | |
642 | * | |
643 | * Setup hw_regs_t structure described by parameters. You | |
644 | * may set up the hw structure yourself OR use this routine to | |
645 | * do it for you. This is basically a helper | |
646 | * | |
647 | */ | |
648 | ||
649 | void ide_setup_ports ( hw_regs_t *hw, | |
650 | unsigned long base, int *offsets, | |
651 | unsigned long ctrl, unsigned long intr, | |
652 | ide_ack_intr_t *ack_intr, | |
653 | /* | |
654 | * ide_io_ops_t *iops, | |
655 | */ | |
656 | int irq) | |
657 | { | |
658 | int i; | |
659 | ||
2c3e0262 | 660 | memset(hw, 0, sizeof(hw_regs_t)); |
1da177e4 LT |
661 | for (i = 0; i < IDE_NR_PORTS; i++) { |
662 | if (offsets[i] == -1) { | |
663 | switch(i) { | |
664 | case IDE_CONTROL_OFFSET: | |
665 | hw->io_ports[i] = ctrl; | |
666 | break; | |
667 | #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) | |
668 | case IDE_IRQ_OFFSET: | |
669 | hw->io_ports[i] = intr; | |
670 | break; | |
671 | #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ | |
672 | default: | |
673 | hw->io_ports[i] = 0; | |
674 | break; | |
675 | } | |
676 | } else { | |
677 | hw->io_ports[i] = base + offsets[i]; | |
678 | } | |
679 | } | |
680 | hw->irq = irq; | |
681 | hw->dma = NO_DMA; | |
682 | hw->ack_intr = ack_intr; | |
683 | /* | |
684 | * hw->iops = iops; | |
685 | */ | |
686 | } | |
687 | ||
688 | /** | |
fd9bb539 | 689 | * ide_register_hw - register IDE interface |
1da177e4 | 690 | * @hw: hardware registers |
fd9bb539 | 691 | * @fixup: fixup function |
869c56ee | 692 | * @initializing: set while initializing built-in drivers |
1da177e4 | 693 | * @hwifp: pointer to returned hwif |
1da177e4 LT |
694 | * |
695 | * Register an IDE interface, specifying exactly the registers etc. | |
696 | * Set init=1 iff calling before probes have taken place. | |
697 | * | |
698 | * Returns -1 on error. | |
699 | */ | |
700 | ||
fd9bb539 BZ |
701 | int ide_register_hw(hw_regs_t *hw, void (*fixup)(ide_hwif_t *), |
702 | int initializing, ide_hwif_t **hwifp) | |
1da177e4 LT |
703 | { |
704 | int index, retry = 1; | |
705 | ide_hwif_t *hwif; | |
706 | ||
707 | do { | |
708 | for (index = 0; index < MAX_HWIFS; ++index) { | |
709 | hwif = &ide_hwifs[index]; | |
710 | if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) | |
711 | goto found; | |
712 | } | |
713 | for (index = 0; index < MAX_HWIFS; ++index) { | |
714 | hwif = &ide_hwifs[index]; | |
715 | if (hwif->hold) | |
716 | continue; | |
717 | if ((!hwif->present && !hwif->mate && !initializing) || | |
718 | (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing)) | |
719 | goto found; | |
720 | } | |
721 | for (index = 0; index < MAX_HWIFS; index++) | |
722 | ide_unregister(index); | |
723 | } while (retry--); | |
724 | return -1; | |
725 | found: | |
726 | if (hwif->present) | |
727 | ide_unregister(index); | |
728 | else if (!hwif->hold) { | |
729 | init_hwif_data(hwif, index); | |
730 | init_hwif_default(hwif, index); | |
731 | } | |
732 | if (hwif->present) | |
733 | return -1; | |
734 | memcpy(&hwif->hw, hw, sizeof(*hw)); | |
735 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); | |
736 | hwif->irq = hw->irq; | |
737 | hwif->noprobe = 0; | |
fd9bb539 | 738 | hwif->fixup = fixup; |
1da177e4 | 739 | hwif->chipset = hw->chipset; |
4349d5cd | 740 | hwif->gendev.parent = hw->dev; |
1da177e4 | 741 | |
8447d9d5 BZ |
742 | if (initializing == 0) { |
743 | u8 idx[4] = { index, 0xff, 0xff, 0xff }; | |
744 | ||
745 | ide_device_add(idx); | |
1da177e4 LT |
746 | } |
747 | ||
748 | if (hwifp) | |
749 | *hwifp = hwif; | |
750 | ||
751 | return (initializing || hwif->present) ? index : -1; | |
752 | } | |
753 | ||
1da177e4 LT |
754 | EXPORT_SYMBOL(ide_register_hw); |
755 | ||
756 | /* | |
757 | * Locks for IDE setting functionality | |
758 | */ | |
759 | ||
f9383c42 | 760 | DEFINE_MUTEX(ide_setting_mtx); |
1da177e4 | 761 | |
f9383c42 | 762 | EXPORT_SYMBOL_GPL(ide_setting_mtx); |
1497943e | 763 | |
1da177e4 LT |
764 | /** |
765 | * ide_spin_wait_hwgroup - wait for group | |
766 | * @drive: drive in the group | |
767 | * | |
768 | * Wait for an IDE device group to go non busy and then return | |
769 | * holding the ide_lock which guards the hwgroup->busy status | |
770 | * and right to use it. | |
771 | */ | |
772 | ||
773 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
774 | { | |
775 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
776 | unsigned long timeout = jiffies + (3 * HZ); | |
777 | ||
778 | spin_lock_irq(&ide_lock); | |
779 | ||
780 | while (hwgroup->busy) { | |
781 | unsigned long lflags; | |
782 | spin_unlock_irq(&ide_lock); | |
783 | local_irq_set(lflags); | |
784 | if (time_after(jiffies, timeout)) { | |
785 | local_irq_restore(lflags); | |
786 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
787 | return -EBUSY; | |
788 | } | |
789 | local_irq_restore(lflags); | |
790 | spin_lock_irq(&ide_lock); | |
791 | } | |
792 | return 0; | |
793 | } | |
794 | ||
795 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
796 | ||
7662d046 | 797 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 798 | { |
1497943e BZ |
799 | if (drive->no_io_32bit) |
800 | return -EPERM; | |
801 | ||
802 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
803 | return -EINVAL; | |
804 | ||
1da177e4 LT |
805 | drive->io_32bit = arg; |
806 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
807 | if (HWIF(drive)->chipset == ide_dtc2278) | |
808 | HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; | |
809 | #endif /* CONFIG_BLK_DEV_DTC2278 */ | |
810 | return 0; | |
811 | } | |
812 | ||
1497943e BZ |
813 | static int set_ksettings(ide_drive_t *drive, int arg) |
814 | { | |
815 | if (arg < 0 || arg > 1) | |
816 | return -EINVAL; | |
817 | ||
818 | if (ide_spin_wait_hwgroup(drive)) | |
819 | return -EBUSY; | |
820 | drive->keep_settings = arg; | |
821 | spin_unlock_irq(&ide_lock); | |
822 | ||
823 | return 0; | |
824 | } | |
825 | ||
7662d046 | 826 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
827 | { |
828 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
829 | ide_hwif_t *hwif = drive->hwif; |
830 | int err = -EPERM; | |
831 | ||
1497943e BZ |
832 | if (arg < 0 || arg > 1) |
833 | return -EINVAL; | |
834 | ||
1da177e4 | 835 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
836 | goto out; |
837 | ||
0ae2e178 | 838 | if (hwif->ide_dma_on == NULL) |
87996204 BZ |
839 | goto out; |
840 | ||
841 | err = -EBUSY; | |
842 | if (ide_spin_wait_hwgroup(drive)) | |
843 | goto out; | |
844 | /* | |
845 | * set ->busy flag, unlock and let it ride | |
846 | */ | |
847 | hwif->hwgroup->busy = 1; | |
848 | spin_unlock_irq(&ide_lock); | |
849 | ||
850 | err = 0; | |
851 | ||
1da177e4 | 852 | if (arg) { |
793a9722 | 853 | hwif->dma_off_quietly(drive); |
87996204 BZ |
854 | if (ide_set_dma(drive) || hwif->ide_dma_on(drive)) |
855 | err = -EIO; | |
7469aaf6 BZ |
856 | } else |
857 | ide_dma_off(drive); | |
87996204 BZ |
858 | |
859 | /* | |
860 | * lock, clear ->busy flag and unlock before leaving | |
861 | */ | |
862 | spin_lock_irq(&ide_lock); | |
863 | hwif->hwgroup->busy = 0; | |
864 | spin_unlock_irq(&ide_lock); | |
865 | out: | |
866 | return err; | |
1da177e4 | 867 | #else |
1497943e BZ |
868 | if (arg < 0 || arg > 1) |
869 | return -EINVAL; | |
870 | ||
1da177e4 LT |
871 | return -EPERM; |
872 | #endif | |
873 | } | |
874 | ||
7662d046 | 875 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
876 | { |
877 | struct request rq; | |
878 | ||
1497943e BZ |
879 | if (arg < 0 || arg > 255) |
880 | return -EINVAL; | |
881 | ||
26bcb879 | 882 | if (drive->hwif->set_pio_mode == NULL) |
1da177e4 | 883 | return -ENOSYS; |
26bcb879 | 884 | |
1da177e4 LT |
885 | if (drive->special.b.set_tune) |
886 | return -EBUSY; | |
887 | ide_init_drive_cmd(&rq); | |
888 | drive->tune_req = (u8) arg; | |
889 | drive->special.b.set_tune = 1; | |
890 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
891 | return 0; | |
892 | } | |
893 | ||
1497943e BZ |
894 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
895 | { | |
896 | if (drive->no_unmask) | |
897 | return -EPERM; | |
898 | ||
899 | if (arg < 0 || arg > 1) | |
900 | return -EINVAL; | |
901 | ||
902 | if (ide_spin_wait_hwgroup(drive)) | |
903 | return -EBUSY; | |
904 | drive->unmask = arg; | |
905 | spin_unlock_irq(&ide_lock); | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
1da177e4 LT |
910 | /** |
911 | * system_bus_clock - clock guess | |
912 | * | |
913 | * External version of the bus clock guess used by very old IDE drivers | |
914 | * for things like VLB timings. Should not be used. | |
915 | */ | |
916 | ||
917 | int system_bus_clock (void) | |
918 | { | |
919 | return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); | |
920 | } | |
921 | ||
922 | EXPORT_SYMBOL(system_bus_clock); | |
923 | ||
b887d2e6 | 924 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
925 | { |
926 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 927 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
928 | struct request rq; |
929 | struct request_pm_state rqpm; | |
930 | ide_task_t args; | |
5e32132b | 931 | int ret; |
1da177e4 | 932 | |
e3a59b4d HR |
933 | /* Call ACPI _GTM only once */ |
934 | if (!(drive->dn % 2)) | |
935 | ide_acpi_get_timing(hwif); | |
936 | ||
1da177e4 LT |
937 | memset(&rq, 0, sizeof(rq)); |
938 | memset(&rqpm, 0, sizeof(rqpm)); | |
939 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 940 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 941 | rq.special = &args; |
c00895ab | 942 | rq.data = &rqpm; |
1da177e4 | 943 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
944 | if (mesg.event == PM_EVENT_PRETHAW) |
945 | mesg.event = PM_EVENT_FREEZE; | |
946 | rqpm.pm_state = mesg.event; | |
1da177e4 | 947 | |
5e32132b SL |
948 | ret = ide_do_drive_cmd(drive, &rq, ide_wait); |
949 | /* only call ACPI _PS3 after both drivers are suspended */ | |
950 | if (!ret && (((drive->dn % 2) && hwif->drives[0].present | |
951 | && hwif->drives[1].present) | |
952 | || !hwif->drives[0].present | |
953 | || !hwif->drives[1].present)) | |
954 | ide_acpi_set_state(hwif, 0); | |
955 | return ret; | |
1da177e4 LT |
956 | } |
957 | ||
958 | static int generic_ide_resume(struct device *dev) | |
959 | { | |
960 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 961 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
962 | struct request rq; |
963 | struct request_pm_state rqpm; | |
964 | ide_task_t args; | |
0d2157f7 | 965 | int err; |
1da177e4 | 966 | |
e3a59b4d | 967 | /* Call ACPI _STM only once */ |
5e32132b SL |
968 | if (!(drive->dn % 2)) { |
969 | ide_acpi_set_state(hwif, 1); | |
e3a59b4d | 970 | ide_acpi_push_timing(hwif); |
5e32132b | 971 | } |
e3a59b4d HR |
972 | |
973 | ide_acpi_exec_tfs(drive); | |
974 | ||
1da177e4 LT |
975 | memset(&rq, 0, sizeof(rq)); |
976 | memset(&rqpm, 0, sizeof(rqpm)); | |
977 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 978 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 979 | rq.special = &args; |
c00895ab | 980 | rq.data = &rqpm; |
1da177e4 | 981 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 982 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 983 | |
0d2157f7 LT |
984 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
985 | ||
ce9b2b0a RW |
986 | if (err == 0 && dev->driver) { |
987 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
988 | ||
989 | if (drv->resume) | |
990 | drv->resume(drive); | |
991 | } | |
0d2157f7 LT |
992 | |
993 | return err; | |
1da177e4 LT |
994 | } |
995 | ||
996 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
997 | unsigned int cmd, unsigned long arg) | |
998 | { | |
1497943e | 999 | unsigned long flags; |
1da177e4 | 1000 | ide_driver_t *drv; |
1da177e4 | 1001 | void __user *p = (void __user *)arg; |
1985026d | 1002 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1497943e | 1003 | u8 *val; |
1da177e4 | 1004 | |
1497943e BZ |
1005 | switch (cmd) { |
1006 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
1007 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
1008 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
1009 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
1010 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
1011 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
1012 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
1013 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
1014 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 1015 | } |
1da177e4 LT |
1016 | |
1017 | switch (cmd) { | |
1da177e4 LT |
1018 | case HDIO_OBSOLETE_IDENTITY: |
1019 | case HDIO_GET_IDENTITY: | |
1020 | if (bdev != bdev->bd_contains) | |
1021 | return -EINVAL; | |
1022 | if (drive->id_read == 0) | |
1023 | return -ENOMSG; | |
1024 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
1025 | return -EFAULT; | |
1026 | return 0; | |
1027 | ||
1028 | case HDIO_GET_NICE: | |
1029 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
1030 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
1031 | drive->nice0 << IDE_NICE_0 | | |
1032 | drive->nice1 << IDE_NICE_1 | | |
1033 | drive->nice2 << IDE_NICE_2, | |
1034 | (long __user *) arg); | |
1035 | ||
1036 | #ifdef CONFIG_IDE_TASK_IOCTL | |
1037 | case HDIO_DRIVE_TASKFILE: | |
1038 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
1039 | return -EACCES; | |
1040 | switch(drive->media) { | |
1041 | case ide_disk: | |
1042 | return ide_taskfile_ioctl(drive, cmd, arg); | |
1043 | default: | |
1044 | return -ENOMSG; | |
1045 | } | |
1046 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
1047 | ||
1048 | case HDIO_DRIVE_CMD: | |
1049 | if (!capable(CAP_SYS_RAWIO)) | |
1050 | return -EACCES; | |
1051 | return ide_cmd_ioctl(drive, cmd, arg); | |
1052 | ||
1053 | case HDIO_DRIVE_TASK: | |
1054 | if (!capable(CAP_SYS_RAWIO)) | |
1055 | return -EACCES; | |
1056 | return ide_task_ioctl(drive, cmd, arg); | |
1057 | ||
1058 | case HDIO_SCAN_HWIF: | |
1059 | { | |
1060 | hw_regs_t hw; | |
1061 | int args[3]; | |
1062 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1063 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
1064 | return -EFAULT; | |
1065 | memset(&hw, 0, sizeof(hw)); | |
1066 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
1067 | (unsigned long) args[1], NULL); | |
1068 | hw.irq = args[2]; | |
fd9bb539 | 1069 | if (ide_register_hw(&hw, NULL, 0, NULL) == -1) |
1da177e4 LT |
1070 | return -EIO; |
1071 | return 0; | |
1072 | } | |
1073 | case HDIO_UNREGISTER_HWIF: | |
1074 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1075 | /* (arg > MAX_HWIFS) checked in function */ | |
1076 | ide_unregister(arg); | |
1077 | return 0; | |
1078 | case HDIO_SET_NICE: | |
1079 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1080 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1081 | return -EPERM; | |
1082 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1083 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1084 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1085 | drive->dsc_overlap = 0; | |
1086 | return -EPERM; | |
1087 | } | |
1088 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1089 | return 0; | |
1090 | case HDIO_DRIVE_RESET: | |
1091 | { | |
1092 | unsigned long flags; | |
1093 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1094 | ||
1095 | /* | |
1096 | * Abort the current command on the | |
1097 | * group if there is one, taking | |
1098 | * care not to allow anything else | |
1099 | * to be queued and to die on the | |
1100 | * spot if we miss one somehow | |
1101 | */ | |
1102 | ||
1103 | spin_lock_irqsave(&ide_lock, flags); | |
1104 | ||
913759ac AC |
1105 | if (HWGROUP(drive)->resetting) { |
1106 | spin_unlock_irqrestore(&ide_lock, flags); | |
1107 | return -EBUSY; | |
1108 | } | |
1109 | ||
1da177e4 LT |
1110 | ide_abort(drive, "drive reset"); |
1111 | ||
125e1874 | 1112 | BUG_ON(HWGROUP(drive)->handler); |
1da177e4 LT |
1113 | |
1114 | /* Ensure nothing gets queued after we | |
1115 | drop the lock. Reset will clear the busy */ | |
1116 | ||
1117 | HWGROUP(drive)->busy = 1; | |
1118 | spin_unlock_irqrestore(&ide_lock, flags); | |
1119 | (void) ide_do_reset(drive); | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
1da177e4 LT |
1124 | case HDIO_GET_BUSSTATE: |
1125 | if (!capable(CAP_SYS_ADMIN)) | |
1126 | return -EACCES; | |
1127 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1128 | return -EFAULT; | |
1129 | return 0; | |
1130 | ||
1131 | case HDIO_SET_BUSSTATE: | |
1132 | if (!capable(CAP_SYS_ADMIN)) | |
1133 | return -EACCES; | |
1134 | if (HWIF(drive)->busproc) | |
1135 | return HWIF(drive)->busproc(drive, (int)arg); | |
1136 | return -EOPNOTSUPP; | |
1137 | default: | |
1138 | return -EINVAL; | |
1139 | } | |
1497943e BZ |
1140 | |
1141 | read_val: | |
f9383c42 | 1142 | mutex_lock(&ide_setting_mtx); |
1497943e BZ |
1143 | spin_lock_irqsave(&ide_lock, flags); |
1144 | err = *val; | |
1145 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 1146 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1147 | return err >= 0 ? put_user(err, (long __user *)arg) : err; |
1148 | ||
1149 | set_val: | |
1150 | if (bdev != bdev->bd_contains) | |
1151 | err = -EINVAL; | |
1152 | else { | |
1153 | if (!capable(CAP_SYS_ADMIN)) | |
1154 | err = -EACCES; | |
1155 | else { | |
f9383c42 | 1156 | mutex_lock(&ide_setting_mtx); |
1497943e | 1157 | err = setfunc(drive, arg); |
f9383c42 | 1158 | mutex_unlock(&ide_setting_mtx); |
1497943e BZ |
1159 | } |
1160 | } | |
1161 | return err; | |
1da177e4 LT |
1162 | } |
1163 | ||
1164 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1165 | ||
1166 | /* | |
1167 | * stridx() returns the offset of c within s, | |
1168 | * or -1 if c is '\0' or not found within s. | |
1169 | */ | |
1170 | static int __init stridx (const char *s, char c) | |
1171 | { | |
1172 | char *i = strchr(s, c); | |
1173 | return (i && c) ? i - s : -1; | |
1174 | } | |
1175 | ||
1176 | /* | |
1177 | * match_parm() does parsing for ide_setup(): | |
1178 | * | |
1179 | * 1. the first char of s must be '='. | |
1180 | * 2. if the remainder matches one of the supplied keywords, | |
1181 | * the index (1 based) of the keyword is negated and returned. | |
1182 | * 3. if the remainder is a series of no more than max_vals numbers | |
1183 | * separated by commas, the numbers are saved in vals[] and a | |
1184 | * count of how many were saved is returned. Base10 is assumed, | |
1185 | * and base16 is allowed when prefixed with "0x". | |
1186 | * 4. otherwise, zero is returned. | |
1187 | */ | |
1188 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1189 | { | |
1190 | static const char *decimal = "0123456789"; | |
1191 | static const char *hex = "0123456789abcdef"; | |
1192 | int i, n; | |
1193 | ||
1194 | if (*s++ == '=') { | |
1195 | /* | |
1196 | * Try matching against the supplied keywords, | |
1197 | * and return -(index+1) if we match one | |
1198 | */ | |
1199 | if (keywords != NULL) { | |
1200 | for (i = 0; *keywords != NULL; ++i) { | |
1201 | if (!strcmp(s, *keywords++)) | |
1202 | return -(i+1); | |
1203 | } | |
1204 | } | |
1205 | /* | |
1206 | * Look for a series of no more than "max_vals" | |
1207 | * numeric values separated by commas, in base10, | |
1208 | * or base16 when prefixed with "0x". | |
1209 | * Return a count of how many were found. | |
1210 | */ | |
1211 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1212 | vals[n] = i; | |
1213 | while ((i = stridx(decimal, *++s)) >= 0) | |
1214 | vals[n] = (vals[n] * 10) + i; | |
1215 | if (*s == 'x' && !vals[n]) { | |
1216 | while ((i = stridx(hex, *++s)) >= 0) | |
1217 | vals[n] = (vals[n] * 0x10) + i; | |
1218 | } | |
1219 | if (++n == max_vals) | |
1220 | break; | |
1221 | if (*s == ',' || *s == ';') | |
1222 | ++s; | |
1223 | } | |
1224 | if (!*s) | |
1225 | return n; | |
1226 | } | |
1227 | return 0; /* zero = nothing matched */ | |
1228 | } | |
1229 | ||
1230 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
84913882 | 1231 | extern int probe_ali14xx; |
1da177e4 LT |
1232 | extern int ali14xx_init(void); |
1233 | #endif | |
1234 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
84913882 | 1235 | extern int probe_umc8672; |
1da177e4 LT |
1236 | extern int umc8672_init(void); |
1237 | #endif | |
1238 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
84913882 | 1239 | extern int probe_dtc2278; |
1da177e4 LT |
1240 | extern int dtc2278_init(void); |
1241 | #endif | |
1242 | #ifdef CONFIG_BLK_DEV_HT6560B | |
84913882 | 1243 | extern int probe_ht6560b; |
1da177e4 LT |
1244 | extern int ht6560b_init(void); |
1245 | #endif | |
1246 | #ifdef CONFIG_BLK_DEV_QD65XX | |
84913882 | 1247 | extern int probe_qd65xx; |
1da177e4 LT |
1248 | extern int qd65xx_init(void); |
1249 | #endif | |
1250 | ||
1251 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1252 | ||
1253 | /* | |
1254 | * ide_setup() gets called VERY EARLY during initialization, | |
1255 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1256 | * | |
1257 | * Remember to update Documentation/ide.txt if you change something here. | |
1258 | */ | |
1259 | static int __init ide_setup(char *s) | |
1260 | { | |
1261 | int i, vals[3]; | |
1262 | ide_hwif_t *hwif; | |
1263 | ide_drive_t *drive; | |
1264 | unsigned int hw, unit; | |
1265 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1266 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1267 | ||
1268 | ||
1269 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1270 | return 0; /* driver and not us */ | |
1271 | ||
1272 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1273 | return 0; | |
1274 | ||
1275 | printk(KERN_INFO "ide_setup: %s", s); | |
1276 | init_ide_data (); | |
1277 | ||
1278 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1279 | if (!strcmp(s, "ide=doubler")) { | |
1280 | extern int ide_doubler; | |
1281 | ||
1282 | printk(" : Enabled support for IDE doublers\n"); | |
1283 | ide_doubler = 1; | |
1284 | return 1; | |
1285 | } | |
1286 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1287 | ||
1288 | if (!strcmp(s, "ide=nodma")) { | |
1289 | printk(" : Prevented DMA\n"); | |
1290 | noautodma = 1; | |
c223701c | 1291 | goto obsolete_option; |
1da177e4 LT |
1292 | } |
1293 | ||
6d208b39 | 1294 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 LT |
1295 | if (!strcmp(s, "ide=reverse")) { |
1296 | ide_scan_direction = 1; | |
1297 | printk(" : Enabled support for IDE inverse scan order.\n"); | |
1298 | return 1; | |
1299 | } | |
6d208b39 | 1300 | #endif |
1da177e4 | 1301 | |
e3a59b4d HR |
1302 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1303 | if (!strcmp(s, "ide=noacpi")) { | |
1304 | //printk(" : Disable IDE ACPI support.\n"); | |
1305 | ide_noacpi = 1; | |
1306 | return 1; | |
1307 | } | |
1308 | if (!strcmp(s, "ide=acpigtf")) { | |
1309 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1310 | ide_noacpitfs = 0; | |
1311 | return 1; | |
1312 | } | |
1313 | if (!strcmp(s, "ide=acpionboot")) { | |
1314 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1315 | ide_noacpionboot = 0; | |
1316 | return 1; | |
1317 | } | |
1318 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1319 | ||
1da177e4 LT |
1320 | /* |
1321 | * Look for drive options: "hdx=" | |
1322 | */ | |
1323 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1324 | const char *hd_words[] = { | |
c223701c | 1325 | "none", "noprobe", "nowerr", "cdrom", "nodma", |
1da177e4 | 1326 | "autotune", "noautotune", "minus8", "swapdata", "bswap", |
36193484 | 1327 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1328 | unit = s[2] - 'a'; |
1329 | hw = unit / MAX_DRIVES; | |
1330 | unit = unit % MAX_DRIVES; | |
1331 | hwif = &ide_hwifs[hw]; | |
1332 | drive = &hwif->drives[unit]; | |
1333 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1334 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
1335 | goto done; | |
1336 | } | |
1337 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1338 | case -1: /* "none" */ | |
1339 | case -2: /* "noprobe" */ | |
1340 | drive->noprobe = 1; | |
1341 | goto done; | |
1342 | case -3: /* "nowerr" */ | |
1343 | drive->bad_wstat = BAD_R_STAT; | |
1344 | hwif->noprobe = 0; | |
1345 | goto done; | |
1346 | case -4: /* "cdrom" */ | |
1347 | drive->present = 1; | |
1348 | drive->media = ide_cdrom; | |
1349 | /* an ATAPI device ignores DRDY */ | |
1350 | drive->ready_stat = 0; | |
1351 | hwif->noprobe = 0; | |
1352 | goto done; | |
c223701c BZ |
1353 | case -5: /* nodma */ |
1354 | drive->nodma = 1; | |
1355 | goto done; | |
1da177e4 LT |
1356 | case -6: /* "autotune" */ |
1357 | drive->autotune = IDE_TUNE_AUTO; | |
1358 | goto obsolete_option; | |
1359 | case -7: /* "noautotune" */ | |
1360 | drive->autotune = IDE_TUNE_NOAUTO; | |
1361 | goto obsolete_option; | |
1362 | case -9: /* "swapdata" */ | |
1363 | case -10: /* "bswap" */ | |
1364 | drive->bswap = 1; | |
1365 | goto done; | |
36193484 JA |
1366 | case -11: /* noflush */ |
1367 | drive->noflush = 1; | |
1368 | goto done; | |
1da177e4 LT |
1369 | case -12: /* "remap" */ |
1370 | drive->remap_0_to_1 = 1; | |
1371 | goto done; | |
1372 | case -13: /* "remap63" */ | |
1373 | drive->sect0 = 63; | |
1374 | goto done; | |
1375 | case -14: /* "scsi" */ | |
1376 | drive->scsi = 1; | |
1377 | goto done; | |
1378 | case 3: /* cyl,head,sect */ | |
1379 | drive->media = ide_disk; | |
1380 | drive->ready_stat = READY_STAT; | |
1381 | drive->cyl = drive->bios_cyl = vals[0]; | |
1382 | drive->head = drive->bios_head = vals[1]; | |
1383 | drive->sect = drive->bios_sect = vals[2]; | |
1384 | drive->present = 1; | |
1385 | drive->forced_geom = 1; | |
1386 | hwif->noprobe = 0; | |
1387 | goto done; | |
1388 | default: | |
1389 | goto bad_option; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1394 | goto bad_option; | |
1395 | /* | |
1396 | * Look for bus speed option: "idebus=" | |
1397 | */ | |
1398 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1399 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1400 | goto bad_option; | |
1401 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1402 | idebus_parameter = vals[0]; | |
1403 | } else | |
1404 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1405 | goto done; | |
1406 | } | |
1407 | /* | |
1408 | * Look for interface options: "idex=" | |
1409 | */ | |
1410 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1411 | /* | |
1412 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1413 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1414 | */ | |
1415 | static const char *ide_words[] = { | |
b6209a90 | 1416 | "noprobe", "serialize", "minus3", "minus4", |
1b516940 | 1417 | "reset", "minus6", "ata66", "minus8", "minus9", |
1da177e4 LT |
1418 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", |
1419 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
1420 | hw = s[3] - '0'; | |
1421 | hwif = &ide_hwifs[hw]; | |
1422 | i = match_parm(&s[4], ide_words, vals, 3); | |
1423 | ||
1424 | /* | |
1425 | * Cryptic check to ensure chipset not already set for hwif. | |
1426 | * Note: we can't depend on hwif->chipset here. | |
1427 | */ | |
1428 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1429 | /* chipset already specified */ | |
1430 | if (is_chipset_set[hw]) | |
1431 | goto bad_option; | |
1432 | if (i > -18 && i <= -11) { | |
1433 | /* these drivers are for "ide0=" only */ | |
1434 | if (hw != 0) | |
1435 | goto bad_hwif; | |
1436 | /* chipset already specified for 2nd port */ | |
1437 | if (is_chipset_set[hw+1]) | |
1438 | goto bad_option; | |
1439 | } | |
1440 | is_chipset_set[hw] = 1; | |
1441 | printk("\n"); | |
1442 | } | |
1443 | ||
1444 | switch (i) { | |
1445 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1446 | case -17: /* "ali14xx" */ | |
1447 | probe_ali14xx = 1; | |
1448 | goto done; | |
1449 | #endif | |
1450 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1451 | case -16: /* "umc8672" */ | |
1452 | probe_umc8672 = 1; | |
1453 | goto done; | |
1454 | #endif | |
1455 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1456 | case -15: /* "dtc2278" */ | |
1457 | probe_dtc2278 = 1; | |
1458 | goto done; | |
1459 | #endif | |
1460 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1461 | case -14: /* "cmd640_vlb" */ | |
1462 | { | |
1463 | extern int cmd640_vlb; /* flag for cmd640.c */ | |
1464 | cmd640_vlb = 1; | |
1465 | goto done; | |
1466 | } | |
1467 | #endif | |
1468 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1469 | case -13: /* "ht6560b" */ | |
1470 | probe_ht6560b = 1; | |
1471 | goto done; | |
1472 | #endif | |
1473 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1474 | case -12: /* "qd65xx" */ | |
1475 | probe_qd65xx = 1; | |
1476 | goto done; | |
1477 | #endif | |
1478 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1479 | case -11: /* "four" drives on one set of ports */ | |
1480 | { | |
1481 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1482 | mate->drives[0].select.all ^= 0x20; | |
1483 | mate->drives[1].select.all ^= 0x20; | |
1484 | hwif->chipset = mate->chipset = ide_4drives; | |
1485 | mate->irq = hwif->irq; | |
1486 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1487 | hwif->mate = mate; |
1488 | mate->mate = hwif; | |
1489 | hwif->serialized = mate->serialized = 1; | |
1490 | goto obsolete_option; | |
1da177e4 LT |
1491 | } |
1492 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1493 | case -10: /* minus10 */ | |
1494 | case -9: /* minus9 */ | |
1495 | case -8: /* minus8 */ | |
1b516940 | 1496 | case -6: |
b6209a90 BZ |
1497 | case -4: |
1498 | case -3: | |
1da177e4 LT |
1499 | goto bad_option; |
1500 | case -7: /* ata66 */ | |
1501 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
49521f97 BZ |
1502 | /* |
1503 | * Use ATA_CBL_PATA40_SHORT so drive side | |
1504 | * cable detection is also overriden. | |
1505 | */ | |
1506 | hwif->cbl = ATA_CBL_PATA40_SHORT; | |
1da177e4 LT |
1507 | goto obsolete_option; |
1508 | #else | |
1509 | goto bad_hwif; | |
1510 | #endif | |
1da177e4 LT |
1511 | case -5: /* "reset" */ |
1512 | hwif->reset = 1; | |
1513 | goto obsolete_option; | |
1da177e4 | 1514 | case -2: /* "serialize" */ |
1da177e4 LT |
1515 | hwif->mate = &ide_hwifs[hw^1]; |
1516 | hwif->mate->mate = hwif; | |
1517 | hwif->serialized = hwif->mate->serialized = 1; | |
1518 | goto obsolete_option; | |
1519 | ||
1520 | case -1: /* "noprobe" */ | |
1521 | hwif->noprobe = 1; | |
1522 | goto done; | |
1523 | ||
1524 | case 1: /* base */ | |
1525 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1526 | case 2: /* base,ctl */ | |
1527 | vals[2] = 0; /* default irq = probe for it */ | |
1528 | case 3: /* base,ctl,irq */ | |
1529 | hwif->hw.irq = vals[2]; | |
1530 | ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); | |
1531 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); | |
1532 | hwif->irq = vals[2]; | |
1533 | hwif->noprobe = 0; | |
1534 | hwif->chipset = ide_forced; | |
1535 | goto obsolete_option; | |
1536 | ||
1537 | case 0: goto bad_option; | |
1538 | default: | |
1539 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1540 | return 1; | |
1541 | } | |
1542 | } | |
1543 | bad_option: | |
1544 | printk(" -- BAD OPTION\n"); | |
1545 | return 1; | |
1546 | obsolete_option: | |
1547 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1548 | return 1; | |
1549 | bad_hwif: | |
1550 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1551 | done: | |
1552 | printk("\n"); | |
1553 | return 1; | |
1554 | } | |
1555 | ||
eb797227 AV |
1556 | extern void __init pnpide_init(void); |
1557 | extern void __exit pnpide_exit(void); | |
1558 | extern void __init h8300_ide_init(void); | |
1da177e4 LT |
1559 | |
1560 | /* | |
1561 | * probe_for_hwifs() finds/initializes "known" IDE interfaces | |
1562 | */ | |
1563 | static void __init probe_for_hwifs (void) | |
1564 | { | |
6d208b39 | 1565 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 | 1566 | ide_scan_pcibus(ide_scan_direction); |
6d208b39 | 1567 | #endif |
1da177e4 LT |
1568 | |
1569 | #ifdef CONFIG_ETRAX_IDE | |
1570 | { | |
1571 | extern void init_e100_ide(void); | |
1572 | init_e100_ide(); | |
1573 | } | |
1574 | #endif /* CONFIG_ETRAX_IDE */ | |
1575 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1576 | { | |
1577 | extern void ide_probe_for_cmd640x(void); | |
1578 | ide_probe_for_cmd640x(); | |
1579 | } | |
1580 | #endif /* CONFIG_BLK_DEV_CMD640 */ | |
1581 | #ifdef CONFIG_BLK_DEV_IDE_PMAC | |
1582 | { | |
9e5755bc AM |
1583 | extern int pmac_ide_probe(void); |
1584 | (void)pmac_ide_probe(); | |
1da177e4 LT |
1585 | } |
1586 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ | |
1587 | #ifdef CONFIG_BLK_DEV_GAYLE | |
1588 | { | |
1589 | extern void gayle_init(void); | |
1590 | gayle_init(); | |
1591 | } | |
1592 | #endif /* CONFIG_BLK_DEV_GAYLE */ | |
1593 | #ifdef CONFIG_BLK_DEV_FALCON_IDE | |
1594 | { | |
1595 | extern void falconide_init(void); | |
1596 | falconide_init(); | |
1597 | } | |
1598 | #endif /* CONFIG_BLK_DEV_FALCON_IDE */ | |
1599 | #ifdef CONFIG_BLK_DEV_MAC_IDE | |
1600 | { | |
1601 | extern void macide_init(void); | |
1602 | macide_init(); | |
1603 | } | |
1604 | #endif /* CONFIG_BLK_DEV_MAC_IDE */ | |
1605 | #ifdef CONFIG_BLK_DEV_Q40IDE | |
1606 | { | |
1607 | extern void q40ide_init(void); | |
1608 | q40ide_init(); | |
1609 | } | |
1610 | #endif /* CONFIG_BLK_DEV_Q40IDE */ | |
1611 | #ifdef CONFIG_BLK_DEV_BUDDHA | |
1612 | { | |
1613 | extern void buddha_init(void); | |
1614 | buddha_init(); | |
1615 | } | |
1616 | #endif /* CONFIG_BLK_DEV_BUDDHA */ | |
1617 | #ifdef CONFIG_BLK_DEV_IDEPNP | |
1618 | pnpide_init(); | |
1619 | #endif | |
1620 | #ifdef CONFIG_H8300 | |
1621 | h8300_ide_init(); | |
1622 | #endif | |
1623 | } | |
1624 | ||
1da177e4 LT |
1625 | /* |
1626 | * Probe module | |
1627 | */ | |
1628 | ||
1629 | EXPORT_SYMBOL(ide_lock); | |
1630 | ||
8604affd BZ |
1631 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1632 | { | |
1633 | return 1; | |
1634 | } | |
1635 | ||
263756ec KS |
1636 | static char *media_string(ide_drive_t *drive) |
1637 | { | |
1638 | switch (drive->media) { | |
1639 | case ide_disk: | |
1640 | return "disk"; | |
1641 | case ide_cdrom: | |
1642 | return "cdrom"; | |
1643 | case ide_tape: | |
1644 | return "tape"; | |
1645 | case ide_floppy: | |
1646 | return "floppy"; | |
a7a832de DK |
1647 | case ide_optical: |
1648 | return "optical"; | |
263756ec KS |
1649 | default: |
1650 | return "UNKNOWN"; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1655 | { | |
1656 | ide_drive_t *drive = to_ide_device(dev); | |
1657 | return sprintf(buf, "%s\n", media_string(drive)); | |
1658 | } | |
1659 | ||
1660 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1661 | { | |
1662 | ide_drive_t *drive = to_ide_device(dev); | |
1663 | return sprintf(buf, "%s\n", drive->name); | |
1664 | } | |
1665 | ||
1666 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1667 | { | |
1668 | ide_drive_t *drive = to_ide_device(dev); | |
1669 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1670 | } | |
1671 | ||
1672 | static struct device_attribute ide_dev_attrs[] = { | |
1673 | __ATTR_RO(media), | |
1674 | __ATTR_RO(drivename), | |
1675 | __ATTR_RO(modalias), | |
1676 | __ATTR_NULL | |
1677 | }; | |
1678 | ||
7eff2e7a | 1679 | static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) |
263756ec KS |
1680 | { |
1681 | ide_drive_t *drive = to_ide_device(dev); | |
7eff2e7a KS |
1682 | |
1683 | add_uevent_var(env, "MEDIA=%s", media_string(drive)); | |
1684 | add_uevent_var(env, "DRIVENAME=%s", drive->name); | |
1685 | add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); | |
263756ec KS |
1686 | return 0; |
1687 | } | |
1688 | ||
4031bbe4 RK |
1689 | static int generic_ide_probe(struct device *dev) |
1690 | { | |
1691 | ide_drive_t *drive = to_ide_device(dev); | |
1692 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1693 | ||
1694 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1695 | } | |
1696 | ||
1697 | static int generic_ide_remove(struct device *dev) | |
1698 | { | |
1699 | ide_drive_t *drive = to_ide_device(dev); | |
1700 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1701 | ||
1702 | if (drv->remove) | |
1703 | drv->remove(drive); | |
1704 | ||
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static void generic_ide_shutdown(struct device *dev) | |
1709 | { | |
1710 | ide_drive_t *drive = to_ide_device(dev); | |
1711 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1712 | ||
1713 | if (dev->driver && drv->shutdown) | |
1714 | drv->shutdown(drive); | |
1715 | } | |
1716 | ||
1da177e4 LT |
1717 | struct bus_type ide_bus_type = { |
1718 | .name = "ide", | |
8604affd | 1719 | .match = ide_bus_match, |
263756ec | 1720 | .uevent = ide_uevent, |
4031bbe4 RK |
1721 | .probe = generic_ide_probe, |
1722 | .remove = generic_ide_remove, | |
1723 | .shutdown = generic_ide_shutdown, | |
263756ec | 1724 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1725 | .suspend = generic_ide_suspend, |
1726 | .resume = generic_ide_resume, | |
1727 | }; | |
1728 | ||
8604affd BZ |
1729 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1730 | ||
1da177e4 LT |
1731 | /* |
1732 | * This is gets invoked once during initialization, to set *everything* up | |
1733 | */ | |
1734 | static int __init ide_init(void) | |
1735 | { | |
349ae23f RD |
1736 | int ret; |
1737 | ||
1da177e4 | 1738 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); |
1da177e4 LT |
1739 | system_bus_speed = ide_system_bus_speed(); |
1740 | ||
349ae23f RD |
1741 | ret = bus_register(&ide_bus_type); |
1742 | if (ret < 0) { | |
1743 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1744 | return ret; | |
1745 | } | |
1da177e4 LT |
1746 | |
1747 | init_ide_data(); | |
1748 | ||
5cbf79cd | 1749 | proc_ide_create(); |
1da177e4 LT |
1750 | |
1751 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1752 | if (probe_ali14xx) | |
1753 | (void)ali14xx_init(); | |
1754 | #endif | |
1755 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1756 | if (probe_umc8672) | |
1757 | (void)umc8672_init(); | |
1758 | #endif | |
1759 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1760 | if (probe_dtc2278) | |
1761 | (void)dtc2278_init(); | |
1762 | #endif | |
1763 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1764 | if (probe_ht6560b) | |
1765 | (void)ht6560b_init(); | |
1766 | #endif | |
1767 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1768 | if (probe_qd65xx) | |
1769 | (void)qd65xx_init(); | |
1770 | #endif | |
1771 | ||
1da177e4 LT |
1772 | /* Probe for special PCI and other "known" interface chipsets. */ |
1773 | probe_for_hwifs(); | |
1da177e4 | 1774 | |
1da177e4 LT |
1775 | return 0; |
1776 | } | |
1777 | ||
1778 | #ifdef MODULE | |
1779 | static char *options = NULL; | |
1780 | module_param(options, charp, 0); | |
1781 | MODULE_LICENSE("GPL"); | |
1782 | ||
1783 | static void __init parse_options (char *line) | |
1784 | { | |
1785 | char *next = line; | |
1786 | ||
1787 | if (line == NULL || !*line) | |
1788 | return; | |
1789 | while ((line = next) != NULL) { | |
1790 | if ((next = strchr(line,' ')) != NULL) | |
1791 | *next++ = 0; | |
1792 | if (!ide_setup(line)) | |
1793 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1794 | } | |
1795 | } | |
1796 | ||
fbd8ad30 | 1797 | int __init init_module (void) |
1da177e4 LT |
1798 | { |
1799 | parse_options(options); | |
1800 | return ide_init(); | |
1801 | } | |
1802 | ||
eb797227 | 1803 | void __exit cleanup_module (void) |
1da177e4 LT |
1804 | { |
1805 | int index; | |
1806 | ||
1807 | for (index = 0; index < MAX_HWIFS; ++index) | |
1808 | ide_unregister(index); | |
1809 | ||
6855036a TH |
1810 | #ifdef CONFIG_BLK_DEV_IDEPNP |
1811 | pnpide_exit(); | |
1812 | #endif | |
1813 | ||
1da177e4 | 1814 | proc_ide_destroy(); |
1da177e4 LT |
1815 | |
1816 | bus_unregister(&ide_bus_type); | |
1817 | } | |
1818 | ||
1819 | #else /* !MODULE */ | |
1820 | ||
1821 | __setup("", ide_setup); | |
1822 | ||
1823 | module_init(ide_init); | |
1824 | ||
1825 | #endif /* MODULE */ |