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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 | * | |
19 | * Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64 | |
20 | * Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64 | |
21 | * Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64 | |
22 | * Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64 | |
23 | * ... | |
24 | * | |
25 | * From hd.c: | |
26 | * | | |
27 | * | It traverses the request-list, using interrupts to jump between functions. | |
28 | * | As nearly all functions can be called within interrupts, we may not sleep. | |
29 | * | Special care is recommended. Have Fun! | |
30 | * | | |
31 | * | modified by Drew Eckhardt to check nr of hd's from the CMOS. | |
32 | * | | |
33 | * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug | |
34 | * | in the early extended-partition checks and added DM partitions. | |
35 | * | | |
36 | * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI). | |
37 | * | | |
38 | * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads", | |
39 | * | and general streamlining by Mark Lord (mlord@pobox.com). | |
40 | * | |
41 | * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by: | |
42 | * | |
43 | * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg) | |
44 | * Delman Lee (delman@ieee.org) ("Mr. atdisk2") | |
45 | * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom) | |
46 | * | |
47 | * This was a rewrite of just about everything from hd.c, though some original | |
48 | * code is still sprinkled about. Think of it as a major evolution, with | |
49 | * inspiration from lots of linux users, esp. hamish@zot.apana.org.au | |
50 | * | |
51 | * Version 1.0 ALPHA initial code, primary i/f working okay | |
52 | * Version 1.3 BETA dual i/f on shared irq tested & working! | |
53 | * Version 1.4 BETA added auto probing for irq(s) | |
54 | * Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms, | |
55 | * ... | |
56 | * Version 5.50 allow values as small as 20 for idebus= | |
57 | * Version 5.51 force non io_32bit in drive_cmd_intr() | |
58 | * change delay_10ms() to delay_50ms() to fix problems | |
59 | * Version 5.52 fix incorrect invalidation of removable devices | |
60 | * add "hdx=slow" command line option | |
61 | * Version 5.60 start to modularize the driver; the disk and ATAPI | |
62 | * drivers can be compiled as loadable modules. | |
63 | * move IDE probe code to ide-probe.c | |
64 | * move IDE disk code to ide-disk.c | |
65 | * add support for generic IDE device subdrivers | |
66 | * add m68k code from Geert Uytterhoeven | |
67 | * probe all interfaces by default | |
68 | * add ioctl to (re)probe an interface | |
69 | * Version 6.00 use per device request queues | |
70 | * attempt to optimize shared hwgroup performance | |
71 | * add ioctl to manually adjust bandwidth algorithms | |
72 | * add kerneld support for the probe module | |
73 | * fix bug in ide_error() | |
74 | * fix bug in the first ide_get_lock() call for Atari | |
75 | * don't flush leftover data for ATAPI devices | |
76 | * Version 6.01 clear hwgroup->active while the hwgroup sleeps | |
77 | * support HDIO_GETGEO for floppies | |
78 | * Version 6.02 fix ide_ack_intr() call | |
79 | * check partition table on floppies | |
80 | * Version 6.03 handle bad status bit sequencing in ide_wait_stat() | |
81 | * Version 6.10 deleted old entries from this list of updates | |
82 | * replaced triton.c with ide-dma.c generic PCI DMA | |
83 | * added support for BIOS-enabled UltraDMA | |
84 | * rename all "promise" things to "pdc4030" | |
85 | * fix EZ-DRIVE handling on small disks | |
86 | * Version 6.11 fix probe error in ide_scan_devices() | |
87 | * fix ancient "jiffies" polling bugs | |
88 | * mask all hwgroup interrupts on each irq entry | |
89 | * Version 6.12 integrate ioctl and proc interfaces | |
90 | * fix parsing of "idex=" command line parameter | |
91 | * Version 6.13 add support for ide4/ide5 courtesy rjones@orchestream.com | |
92 | * Version 6.14 fixed IRQ sharing among PCI devices | |
93 | * Version 6.15 added SMP awareness to IDE drivers | |
94 | * Version 6.16 fixed various bugs; even more SMP friendly | |
95 | * Version 6.17 fix for newest EZ-Drive problem | |
96 | * Version 6.18 default unpartitioned-disk translation now "BIOS LBA" | |
97 | * Version 6.19 Re-design for a UNIFORM driver for all platforms, | |
98 | * model based on suggestions from Russell King and | |
99 | * Geert Uytterhoeven | |
100 | * Promise DC4030VL now supported. | |
101 | * add support for ide6/ide7 | |
102 | * delay_50ms() changed to ide_delay_50ms() and exported. | |
103 | * Version 6.20 Added/Fixed Generic ATA-66 support and hwif detection. | |
104 | * Added hdx=flash to allow for second flash disk | |
105 | * detection w/o the hang loop. | |
106 | * Added support for ide8/ide9 | |
107 | * Added idex=ata66 for the quirky chipsets that are | |
108 | * ATA-66 compliant, but have yet to determine a method | |
109 | * of verification of the 80c cable presence. | |
110 | * Specifically Promise's PDC20262 chipset. | |
111 | * Version 6.21 Fixing/Fixed SMP spinlock issue with insight from an old | |
112 | * hat that clarified original low level driver design. | |
113 | * Version 6.30 Added SMP support; fixed multmode issues. -ml | |
114 | * Version 6.31 Debug Share INTR's and request queue streaming | |
115 | * Native ATA-100 support | |
116 | * Prep for Cascades Project | |
117 | * Version 7.00alpha First named revision of ide rearrange | |
118 | * | |
119 | * Some additional driver compile-time options are in ./include/linux/ide.h | |
120 | * | |
121 | * To do, in likely order of completion: | |
122 | * - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f | |
123 | * | |
124 | */ | |
125 | ||
126 | #define REVISION "Revision: 7.00alpha2" | |
127 | #define VERSION "Id: ide.c 7.00a2 20020906" | |
128 | ||
1da177e4 LT |
129 | #define _IDE_C /* Tell ide.h it's really us */ |
130 | ||
1da177e4 LT |
131 | #include <linux/module.h> |
132 | #include <linux/types.h> | |
133 | #include <linux/string.h> | |
134 | #include <linux/kernel.h> | |
135 | #include <linux/timer.h> | |
136 | #include <linux/mm.h> | |
137 | #include <linux/interrupt.h> | |
138 | #include <linux/major.h> | |
139 | #include <linux/errno.h> | |
140 | #include <linux/genhd.h> | |
141 | #include <linux/blkpg.h> | |
142 | #include <linux/slab.h> | |
143 | #include <linux/init.h> | |
144 | #include <linux/pci.h> | |
145 | #include <linux/delay.h> | |
146 | #include <linux/ide.h> | |
1da177e4 LT |
147 | #include <linux/completion.h> |
148 | #include <linux/reboot.h> | |
149 | #include <linux/cdrom.h> | |
150 | #include <linux/seq_file.h> | |
151 | #include <linux/device.h> | |
152 | #include <linux/bitops.h> | |
153 | ||
154 | #include <asm/byteorder.h> | |
155 | #include <asm/irq.h> | |
156 | #include <asm/uaccess.h> | |
157 | #include <asm/io.h> | |
158 | ||
159 | ||
160 | /* default maximum number of failures */ | |
161 | #define IDE_DEFAULT_MAX_FAILURES 1 | |
162 | ||
163 | static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, | |
164 | IDE2_MAJOR, IDE3_MAJOR, | |
165 | IDE4_MAJOR, IDE5_MAJOR, | |
166 | IDE6_MAJOR, IDE7_MAJOR, | |
167 | IDE8_MAJOR, IDE9_MAJOR }; | |
168 | ||
169 | static int idebus_parameter; /* holds the "idebus=" parameter */ | |
170 | static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ | |
1da177e4 | 171 | |
ef29888e | 172 | DEFINE_MUTEX(ide_cfg_mtx); |
1da177e4 LT |
173 | __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); |
174 | ||
6d208b39 | 175 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 LT |
176 | static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ |
177 | #endif | |
178 | ||
1da177e4 | 179 | int noautodma = 0; |
1da177e4 LT |
180 | |
181 | EXPORT_SYMBOL(noautodma); | |
182 | ||
e3a59b4d HR |
183 | #ifdef CONFIG_BLK_DEV_IDEACPI |
184 | int ide_noacpi = 0; | |
185 | int ide_noacpitfs = 1; | |
186 | int ide_noacpionboot = 1; | |
187 | #endif | |
188 | ||
1da177e4 LT |
189 | /* |
190 | * This is declared extern in ide.h, for access by other IDE modules: | |
191 | */ | |
192 | ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ | |
193 | ||
194 | EXPORT_SYMBOL(ide_hwifs); | |
195 | ||
1da177e4 LT |
196 | /* |
197 | * Do not even *think* about calling this! | |
198 | */ | |
199 | static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) | |
200 | { | |
201 | unsigned int unit; | |
202 | ||
203 | /* bulk initialize hwif & drive info with zeros */ | |
204 | memset(hwif, 0, sizeof(ide_hwif_t)); | |
205 | ||
206 | /* fill in any non-zero initial values */ | |
207 | hwif->index = index; | |
208 | hwif->major = ide_hwif_to_major[index]; | |
209 | ||
210 | hwif->name[0] = 'i'; | |
211 | hwif->name[1] = 'd'; | |
212 | hwif->name[2] = 'e'; | |
213 | hwif->name[3] = '0' + index; | |
214 | ||
215 | hwif->bus_state = BUSSTATE_ON; | |
216 | ||
217 | hwif->atapi_dma = 0; /* disable all atapi dma */ | |
1da177e4 | 218 | |
f36d4024 | 219 | init_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
220 | |
221 | default_hwif_iops(hwif); | |
222 | default_hwif_transport(hwif); | |
223 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
224 | ide_drive_t *drive = &hwif->drives[unit]; | |
225 | ||
226 | drive->media = ide_disk; | |
227 | drive->select.all = (unit<<4)|0xa0; | |
228 | drive->hwif = hwif; | |
229 | drive->ctl = 0x08; | |
230 | drive->ready_stat = READY_STAT; | |
231 | drive->bad_wstat = BAD_W_STAT; | |
232 | drive->special.b.recalibrate = 1; | |
233 | drive->special.b.set_geometry = 1; | |
234 | drive->name[0] = 'h'; | |
235 | drive->name[1] = 'd'; | |
236 | drive->name[2] = 'a' + (index * MAX_DRIVES) + unit; | |
237 | drive->max_failures = IDE_DEFAULT_MAX_FAILURES; | |
238 | drive->using_dma = 0; | |
1da177e4 LT |
239 | drive->vdma = 0; |
240 | INIT_LIST_HEAD(&drive->list); | |
f36d4024 | 241 | init_completion(&drive->gendev_rel_comp); |
1da177e4 LT |
242 | } |
243 | } | |
244 | ||
245 | static void init_hwif_default(ide_hwif_t *hwif, unsigned int index) | |
246 | { | |
247 | hw_regs_t hw; | |
248 | ||
249 | memset(&hw, 0, sizeof(hw_regs_t)); | |
250 | ||
251 | ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq); | |
252 | ||
253 | memcpy(&hwif->hw, &hw, sizeof(hw)); | |
254 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports)); | |
255 | ||
256 | hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET]; | |
257 | #ifdef CONFIG_BLK_DEV_HD | |
258 | if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA) | |
259 | hwif->noprobe = 1; /* may be overridden by ide_setup() */ | |
260 | #endif | |
261 | } | |
262 | ||
263 | extern void ide_arm_init(void); | |
264 | ||
265 | /* | |
266 | * init_ide_data() sets reasonable default values into all fields | |
267 | * of all instances of the hwifs and drives, but only on the first call. | |
268 | * Subsequent calls have no effect (they don't wipe out anything). | |
269 | * | |
270 | * This routine is normally called at driver initialization time, | |
271 | * but may also be called MUCH earlier during kernel "command-line" | |
272 | * parameter processing. As such, we cannot depend on any other parts | |
273 | * of the kernel (such as memory allocation) to be functioning yet. | |
274 | * | |
275 | * This is too bad, as otherwise we could dynamically allocate the | |
276 | * ide_drive_t structs as needed, rather than always consuming memory | |
277 | * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them. | |
278 | * | |
279 | * FIXME: We should stuff the setup data into __init and copy the | |
280 | * relevant hwifs/allocate them properly during boot. | |
281 | */ | |
282 | #define MAGIC_COOKIE 0x12345678 | |
283 | static void __init init_ide_data (void) | |
284 | { | |
285 | ide_hwif_t *hwif; | |
286 | unsigned int index; | |
287 | static unsigned long magic_cookie = MAGIC_COOKIE; | |
288 | ||
289 | if (magic_cookie != MAGIC_COOKIE) | |
290 | return; /* already initialized */ | |
291 | magic_cookie = 0; | |
292 | ||
293 | /* Initialise all interface structures */ | |
294 | for (index = 0; index < MAX_HWIFS; ++index) { | |
295 | hwif = &ide_hwifs[index]; | |
296 | init_hwif_data(hwif, index); | |
297 | init_hwif_default(hwif, index); | |
298 | #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI) | |
299 | hwif->irq = hwif->hw.irq = | |
300 | ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]); | |
301 | #endif | |
302 | } | |
303 | #ifdef CONFIG_IDE_ARM | |
1da177e4 | 304 | ide_arm_init(); |
1da177e4 LT |
305 | #endif |
306 | } | |
307 | ||
308 | /** | |
309 | * ide_system_bus_speed - guess bus speed | |
310 | * | |
311 | * ide_system_bus_speed() returns what we think is the system VESA/PCI | |
312 | * bus speed (in MHz). This is used for calculating interface PIO timings. | |
313 | * The default is 40 for known PCI systems, 50 otherwise. | |
314 | * The "idebus=xx" parameter can be used to override this value. | |
315 | * The actual value to be used is computed/displayed the first time | |
316 | * through. Drivers should only use this as a last resort. | |
317 | * | |
318 | * Returns a guessed speed in MHz. | |
319 | */ | |
320 | ||
321 | static int ide_system_bus_speed(void) | |
322 | { | |
323 | #ifdef CONFIG_PCI | |
324 | static struct pci_device_id pci_default[] = { | |
325 | { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) }, | |
326 | { } | |
327 | }; | |
328 | #else | |
329 | #define pci_default 0 | |
330 | #endif /* CONFIG_PCI */ | |
331 | ||
332 | if (!system_bus_speed) { | |
333 | if (idebus_parameter) { | |
334 | /* user supplied value */ | |
335 | system_bus_speed = idebus_parameter; | |
336 | } else if (pci_dev_present(pci_default)) { | |
337 | /* safe default value for PCI */ | |
338 | system_bus_speed = 33; | |
339 | } else { | |
340 | /* safe default value for VESA and PCI */ | |
341 | system_bus_speed = 50; | |
342 | } | |
343 | printk(KERN_INFO "ide: Assuming %dMHz system bus speed " | |
344 | "for PIO modes%s\n", system_bus_speed, | |
345 | idebus_parameter ? "" : "; override with idebus=xx"); | |
346 | } | |
347 | return system_bus_speed; | |
348 | } | |
349 | ||
1da177e4 LT |
350 | static struct resource* hwif_request_region(ide_hwif_t *hwif, |
351 | unsigned long addr, int num) | |
352 | { | |
353 | struct resource *res = request_region(addr, num, hwif->name); | |
354 | ||
355 | if (!res) | |
356 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
357 | hwif->name, addr, addr+num-1); | |
358 | return res; | |
359 | } | |
360 | ||
361 | /** | |
362 | * ide_hwif_request_regions - request resources for IDE | |
363 | * @hwif: interface to use | |
364 | * | |
365 | * Requests all the needed resources for an interface. | |
366 | * Right now core IDE code does this work which is deeply wrong. | |
367 | * MMIO leaves it to the controller driver, | |
368 | * PIO will migrate this way over time. | |
369 | */ | |
370 | ||
371 | int ide_hwif_request_regions(ide_hwif_t *hwif) | |
372 | { | |
373 | unsigned long addr; | |
374 | unsigned int i; | |
375 | ||
2ad1e558 | 376 | if (hwif->mmio) |
1da177e4 | 377 | return 0; |
1da177e4 LT |
378 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; |
379 | if (addr && !hwif_request_region(hwif, addr, 1)) | |
380 | goto control_region_busy; | |
381 | hwif->straight8 = 0; | |
382 | addr = hwif->io_ports[IDE_DATA_OFFSET]; | |
383 | if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) { | |
384 | if (!hwif_request_region(hwif, addr, 8)) | |
385 | goto data_region_busy; | |
386 | hwif->straight8 = 1; | |
387 | return 0; | |
388 | } | |
389 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { | |
390 | addr = hwif->io_ports[i]; | |
391 | if (!hwif_request_region(hwif, addr, 1)) { | |
392 | while (--i) | |
393 | release_region(addr, 1); | |
394 | goto data_region_busy; | |
395 | } | |
396 | } | |
397 | return 0; | |
398 | ||
399 | data_region_busy: | |
400 | addr = hwif->io_ports[IDE_CONTROL_OFFSET]; | |
401 | if (addr) | |
402 | release_region(addr, 1); | |
403 | control_region_busy: | |
404 | /* If any errors are return, we drop the hwif interface. */ | |
405 | return -EBUSY; | |
406 | } | |
407 | ||
408 | /** | |
409 | * ide_hwif_release_regions - free IDE resources | |
410 | * | |
411 | * Note that we only release the standard ports, | |
412 | * and do not even try to handle any extra ports | |
413 | * allocated for weird IDE interface chipsets. | |
414 | * | |
415 | * Note also that we don't yet handle mmio resources here. More | |
416 | * importantly our caller should be doing this so we need to | |
417 | * restructure this as a helper function for drivers. | |
418 | */ | |
419 | ||
420 | void ide_hwif_release_regions(ide_hwif_t *hwif) | |
421 | { | |
422 | u32 i = 0; | |
423 | ||
2ad1e558 | 424 | if (hwif->mmio) |
1da177e4 LT |
425 | return; |
426 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
427 | release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1); | |
428 | if (hwif->straight8) { | |
429 | release_region(hwif->io_ports[IDE_DATA_OFFSET], 8); | |
430 | return; | |
431 | } | |
432 | for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) | |
433 | if (hwif->io_ports[i]) | |
434 | release_region(hwif->io_ports[i], 1); | |
435 | } | |
436 | ||
437 | /** | |
438 | * ide_hwif_restore - restore hwif to template | |
439 | * @hwif: hwif to update | |
440 | * @tmp_hwif: template | |
441 | * | |
020e322d | 442 | * Restore hwif to a previous state by copying most settings |
1da177e4 LT |
443 | * from the template. |
444 | */ | |
445 | ||
446 | static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) | |
447 | { | |
448 | hwif->hwgroup = tmp_hwif->hwgroup; | |
449 | ||
450 | hwif->gendev.parent = tmp_hwif->gendev.parent; | |
451 | ||
452 | hwif->proc = tmp_hwif->proc; | |
453 | ||
454 | hwif->major = tmp_hwif->major; | |
455 | hwif->straight8 = tmp_hwif->straight8; | |
456 | hwif->bus_state = tmp_hwif->bus_state; | |
457 | ||
458 | hwif->atapi_dma = tmp_hwif->atapi_dma; | |
459 | hwif->ultra_mask = tmp_hwif->ultra_mask; | |
460 | hwif->mwdma_mask = tmp_hwif->mwdma_mask; | |
461 | hwif->swdma_mask = tmp_hwif->swdma_mask; | |
462 | ||
463 | hwif->chipset = tmp_hwif->chipset; | |
464 | hwif->hold = tmp_hwif->hold; | |
465 | ||
466 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
467 | hwif->pci_dev = tmp_hwif->pci_dev; | |
468 | hwif->cds = tmp_hwif->cds; | |
469 | #endif | |
470 | ||
471 | hwif->tuneproc = tmp_hwif->tuneproc; | |
472 | hwif->speedproc = tmp_hwif->speedproc; | |
2d5eaa6d | 473 | hwif->udma_filter = tmp_hwif->udma_filter; |
1da177e4 LT |
474 | hwif->selectproc = tmp_hwif->selectproc; |
475 | hwif->reset_poll = tmp_hwif->reset_poll; | |
476 | hwif->pre_reset = tmp_hwif->pre_reset; | |
477 | hwif->resetproc = tmp_hwif->resetproc; | |
478 | hwif->intrproc = tmp_hwif->intrproc; | |
479 | hwif->maskproc = tmp_hwif->maskproc; | |
480 | hwif->quirkproc = tmp_hwif->quirkproc; | |
481 | hwif->busproc = tmp_hwif->busproc; | |
482 | ||
483 | hwif->ata_input_data = tmp_hwif->ata_input_data; | |
484 | hwif->ata_output_data = tmp_hwif->ata_output_data; | |
485 | hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes; | |
486 | hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes; | |
487 | ||
488 | hwif->dma_setup = tmp_hwif->dma_setup; | |
489 | hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd; | |
490 | hwif->dma_start = tmp_hwif->dma_start; | |
491 | hwif->ide_dma_end = tmp_hwif->ide_dma_end; | |
492 | hwif->ide_dma_check = tmp_hwif->ide_dma_check; | |
493 | hwif->ide_dma_on = tmp_hwif->ide_dma_on; | |
7469aaf6 | 494 | hwif->dma_off_quietly = tmp_hwif->dma_off_quietly; |
1da177e4 | 495 | hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq; |
f0dd8712 | 496 | hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq; |
ccf35289 | 497 | hwif->dma_host_on = tmp_hwif->dma_host_on; |
7469aaf6 | 498 | hwif->dma_host_off = tmp_hwif->dma_host_off; |
841d2a9b | 499 | hwif->dma_lost_irq = tmp_hwif->dma_lost_irq; |
c283f5db | 500 | hwif->dma_timeout = tmp_hwif->dma_timeout; |
1da177e4 LT |
501 | |
502 | hwif->OUTB = tmp_hwif->OUTB; | |
503 | hwif->OUTBSYNC = tmp_hwif->OUTBSYNC; | |
504 | hwif->OUTW = tmp_hwif->OUTW; | |
1da177e4 LT |
505 | hwif->OUTSW = tmp_hwif->OUTSW; |
506 | hwif->OUTSL = tmp_hwif->OUTSL; | |
507 | ||
508 | hwif->INB = tmp_hwif->INB; | |
509 | hwif->INW = tmp_hwif->INW; | |
1da177e4 LT |
510 | hwif->INSW = tmp_hwif->INSW; |
511 | hwif->INSL = tmp_hwif->INSL; | |
512 | ||
513 | hwif->sg_max_nents = tmp_hwif->sg_max_nents; | |
514 | ||
515 | hwif->mmio = tmp_hwif->mmio; | |
516 | hwif->rqsize = tmp_hwif->rqsize; | |
517 | hwif->no_lba48 = tmp_hwif->no_lba48; | |
518 | ||
519 | #ifndef CONFIG_BLK_DEV_IDECS | |
520 | hwif->irq = tmp_hwif->irq; | |
521 | #endif | |
522 | ||
523 | hwif->dma_base = tmp_hwif->dma_base; | |
524 | hwif->dma_master = tmp_hwif->dma_master; | |
525 | hwif->dma_command = tmp_hwif->dma_command; | |
526 | hwif->dma_vendor1 = tmp_hwif->dma_vendor1; | |
527 | hwif->dma_status = tmp_hwif->dma_status; | |
528 | hwif->dma_vendor3 = tmp_hwif->dma_vendor3; | |
529 | hwif->dma_prdtable = tmp_hwif->dma_prdtable; | |
530 | ||
1da177e4 LT |
531 | hwif->config_data = tmp_hwif->config_data; |
532 | hwif->select_data = tmp_hwif->select_data; | |
020e322d SS |
533 | hwif->extra_base = tmp_hwif->extra_base; |
534 | hwif->extra_ports = tmp_hwif->extra_ports; | |
1da177e4 LT |
535 | hwif->autodma = tmp_hwif->autodma; |
536 | hwif->udma_four = tmp_hwif->udma_four; | |
1da177e4 LT |
537 | |
538 | hwif->hwif_data = tmp_hwif->hwif_data; | |
539 | } | |
540 | ||
541 | /** | |
020e322d | 542 | * ide_unregister - free an IDE interface |
1da177e4 LT |
543 | * @index: index of interface (will change soon to a pointer) |
544 | * | |
545 | * Perform the final unregister of an IDE interface. At the moment | |
546 | * we don't refcount interfaces so this will also get split up. | |
547 | * | |
548 | * Locking: | |
549 | * The caller must not hold the IDE locks | |
550 | * The drive present/vanishing is not yet properly locked | |
551 | * Take care with the callbacks. These have been split to avoid | |
552 | * deadlocking the IDE layer. The shutdown callback is called | |
553 | * before we take the lock and free resources. It is up to the | |
554 | * caller to be sure there is no pending I/O here, and that | |
020e322d SS |
555 | * the interface will not be reopened (present/vanishing locking |
556 | * isn't yet done BTW). After we commit to the final kill we | |
1da177e4 LT |
557 | * call the cleanup callback with the ide locks held. |
558 | * | |
559 | * Unregister restores the hwif structures to the default state. | |
560 | * This is raving bonkers. | |
561 | */ | |
562 | ||
563 | void ide_unregister(unsigned int index) | |
564 | { | |
565 | ide_drive_t *drive; | |
566 | ide_hwif_t *hwif, *g; | |
ef29888e | 567 | static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */ |
1da177e4 | 568 | ide_hwgroup_t *hwgroup; |
8604affd | 569 | int irq_count = 0, unit; |
1da177e4 LT |
570 | |
571 | BUG_ON(index >= MAX_HWIFS); | |
572 | ||
573 | BUG_ON(in_interrupt()); | |
574 | BUG_ON(irqs_disabled()); | |
ef29888e | 575 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
576 | spin_lock_irq(&ide_lock); |
577 | hwif = &ide_hwifs[index]; | |
578 | if (!hwif->present) | |
579 | goto abort; | |
580 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
581 | drive = &hwif->drives[unit]; | |
94f6c59d | 582 | if (!drive->present) |
1da177e4 | 583 | continue; |
8604affd BZ |
584 | spin_unlock_irq(&ide_lock); |
585 | device_unregister(&drive->gendev); | |
f36d4024 | 586 | wait_for_completion(&drive->gendev_rel_comp); |
8604affd | 587 | spin_lock_irq(&ide_lock); |
1da177e4 LT |
588 | } |
589 | hwif->present = 0; | |
590 | ||
591 | spin_unlock_irq(&ide_lock); | |
592 | ||
5cbf79cd | 593 | ide_proc_unregister_port(hwif); |
1da177e4 LT |
594 | |
595 | hwgroup = hwif->hwgroup; | |
596 | /* | |
597 | * free the irq if we were the only hwif using it | |
598 | */ | |
599 | g = hwgroup->hwif; | |
600 | do { | |
601 | if (g->irq == hwif->irq) | |
602 | ++irq_count; | |
603 | g = g->next; | |
604 | } while (g != hwgroup->hwif); | |
605 | if (irq_count == 1) | |
606 | free_irq(hwif->irq, hwgroup); | |
607 | ||
608 | spin_lock_irq(&ide_lock); | |
609 | /* | |
610 | * Note that we only release the standard ports, | |
611 | * and do not even try to handle any extra ports | |
612 | * allocated for weird IDE interface chipsets. | |
613 | */ | |
614 | ide_hwif_release_regions(hwif); | |
615 | ||
616 | /* | |
617 | * Remove us from the hwgroup, and free | |
618 | * the hwgroup if we were the only member | |
619 | */ | |
1da177e4 LT |
620 | if (hwif->next == hwif) { |
621 | BUG_ON(hwgroup->hwif != hwif); | |
622 | kfree(hwgroup); | |
623 | } else { | |
624 | /* There is another interface in hwgroup. | |
625 | * Unlink us, and set hwgroup->drive and ->hwif to | |
626 | * something sane. | |
627 | */ | |
628 | g = hwgroup->hwif; | |
629 | while (g->next != hwif) | |
630 | g = g->next; | |
631 | g->next = hwif->next; | |
632 | if (hwgroup->hwif == hwif) { | |
633 | /* Chose a random hwif for hwgroup->hwif. | |
634 | * It's guaranteed that there are no drives | |
635 | * left in the hwgroup. | |
636 | */ | |
637 | BUG_ON(hwgroup->drive != NULL); | |
638 | hwgroup->hwif = g; | |
639 | } | |
640 | BUG_ON(hwgroup->hwif == hwif); | |
641 | } | |
642 | ||
643 | /* More messed up locking ... */ | |
644 | spin_unlock_irq(&ide_lock); | |
645 | device_unregister(&hwif->gendev); | |
f36d4024 | 646 | wait_for_completion(&hwif->gendev_rel_comp); |
1da177e4 LT |
647 | |
648 | /* | |
649 | * Remove us from the kernel's knowledge | |
650 | */ | |
651 | blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS); | |
652 | kfree(hwif->sg_table); | |
653 | unregister_blkdev(hwif->major, hwif->name); | |
654 | spin_lock_irq(&ide_lock); | |
655 | ||
656 | if (hwif->dma_base) { | |
657 | (void) ide_release_dma(hwif); | |
658 | ||
659 | hwif->dma_base = 0; | |
660 | hwif->dma_master = 0; | |
661 | hwif->dma_command = 0; | |
662 | hwif->dma_vendor1 = 0; | |
663 | hwif->dma_status = 0; | |
664 | hwif->dma_vendor3 = 0; | |
665 | hwif->dma_prdtable = 0; | |
020e322d SS |
666 | |
667 | hwif->extra_base = 0; | |
668 | hwif->extra_ports = 0; | |
1da177e4 LT |
669 | } |
670 | ||
671 | /* copy original settings */ | |
672 | tmp_hwif = *hwif; | |
673 | ||
674 | /* restore hwif data to pristine status */ | |
675 | init_hwif_data(hwif, index); | |
676 | init_hwif_default(hwif, index); | |
677 | ||
678 | ide_hwif_restore(hwif, &tmp_hwif); | |
679 | ||
680 | abort: | |
681 | spin_unlock_irq(&ide_lock); | |
ef29888e | 682 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
683 | } |
684 | ||
685 | EXPORT_SYMBOL(ide_unregister); | |
686 | ||
687 | ||
688 | /** | |
689 | * ide_setup_ports - set up IDE interface ports | |
690 | * @hw: register descriptions | |
691 | * @base: base register | |
692 | * @offsets: table of register offsets | |
693 | * @ctrl: control register | |
694 | * @ack_irq: IRQ ack | |
695 | * @irq: interrupt lie | |
696 | * | |
697 | * Setup hw_regs_t structure described by parameters. You | |
698 | * may set up the hw structure yourself OR use this routine to | |
699 | * do it for you. This is basically a helper | |
700 | * | |
701 | */ | |
702 | ||
703 | void ide_setup_ports ( hw_regs_t *hw, | |
704 | unsigned long base, int *offsets, | |
705 | unsigned long ctrl, unsigned long intr, | |
706 | ide_ack_intr_t *ack_intr, | |
707 | /* | |
708 | * ide_io_ops_t *iops, | |
709 | */ | |
710 | int irq) | |
711 | { | |
712 | int i; | |
713 | ||
2c3e0262 | 714 | memset(hw, 0, sizeof(hw_regs_t)); |
1da177e4 LT |
715 | for (i = 0; i < IDE_NR_PORTS; i++) { |
716 | if (offsets[i] == -1) { | |
717 | switch(i) { | |
718 | case IDE_CONTROL_OFFSET: | |
719 | hw->io_ports[i] = ctrl; | |
720 | break; | |
721 | #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC) | |
722 | case IDE_IRQ_OFFSET: | |
723 | hw->io_ports[i] = intr; | |
724 | break; | |
725 | #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */ | |
726 | default: | |
727 | hw->io_ports[i] = 0; | |
728 | break; | |
729 | } | |
730 | } else { | |
731 | hw->io_ports[i] = base + offsets[i]; | |
732 | } | |
733 | } | |
734 | hw->irq = irq; | |
735 | hw->dma = NO_DMA; | |
736 | hw->ack_intr = ack_intr; | |
737 | /* | |
738 | * hw->iops = iops; | |
739 | */ | |
740 | } | |
741 | ||
742 | /** | |
743 | * ide_register_hw_with_fixup - register IDE interface | |
744 | * @hw: hardware registers | |
869c56ee | 745 | * @initializing: set while initializing built-in drivers |
1da177e4 LT |
746 | * @hwifp: pointer to returned hwif |
747 | * @fixup: fixup function | |
748 | * | |
749 | * Register an IDE interface, specifying exactly the registers etc. | |
750 | * Set init=1 iff calling before probes have taken place. | |
751 | * | |
752 | * Returns -1 on error. | |
753 | */ | |
754 | ||
869c56ee BZ |
755 | int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing, |
756 | ide_hwif_t **hwifp, | |
757 | void(*fixup)(ide_hwif_t *hwif)) | |
1da177e4 LT |
758 | { |
759 | int index, retry = 1; | |
760 | ide_hwif_t *hwif; | |
761 | ||
762 | do { | |
763 | for (index = 0; index < MAX_HWIFS; ++index) { | |
764 | hwif = &ide_hwifs[index]; | |
765 | if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET]) | |
766 | goto found; | |
767 | } | |
768 | for (index = 0; index < MAX_HWIFS; ++index) { | |
769 | hwif = &ide_hwifs[index]; | |
770 | if (hwif->hold) | |
771 | continue; | |
772 | if ((!hwif->present && !hwif->mate && !initializing) || | |
773 | (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing)) | |
774 | goto found; | |
775 | } | |
776 | for (index = 0; index < MAX_HWIFS; index++) | |
777 | ide_unregister(index); | |
778 | } while (retry--); | |
779 | return -1; | |
780 | found: | |
781 | if (hwif->present) | |
782 | ide_unregister(index); | |
783 | else if (!hwif->hold) { | |
784 | init_hwif_data(hwif, index); | |
785 | init_hwif_default(hwif, index); | |
786 | } | |
787 | if (hwif->present) | |
788 | return -1; | |
789 | memcpy(&hwif->hw, hw, sizeof(*hw)); | |
790 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); | |
791 | hwif->irq = hw->irq; | |
792 | hwif->noprobe = 0; | |
793 | hwif->chipset = hw->chipset; | |
4349d5cd | 794 | hwif->gendev.parent = hw->dev; |
1da177e4 LT |
795 | |
796 | if (!initializing) { | |
797 | probe_hwif_init_with_fixup(hwif, fixup); | |
5cbf79cd | 798 | ide_proc_register_port(hwif); |
1da177e4 LT |
799 | } |
800 | ||
801 | if (hwifp) | |
802 | *hwifp = hwif; | |
803 | ||
804 | return (initializing || hwif->present) ? index : -1; | |
805 | } | |
806 | ||
807 | EXPORT_SYMBOL(ide_register_hw_with_fixup); | |
808 | ||
869c56ee | 809 | int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp) |
1da177e4 | 810 | { |
869c56ee | 811 | return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL); |
1da177e4 LT |
812 | } |
813 | ||
814 | EXPORT_SYMBOL(ide_register_hw); | |
815 | ||
816 | /* | |
817 | * Locks for IDE setting functionality | |
818 | */ | |
819 | ||
820 | DECLARE_MUTEX(ide_setting_sem); | |
821 | ||
1497943e BZ |
822 | EXPORT_SYMBOL_GPL(ide_setting_sem); |
823 | ||
1da177e4 LT |
824 | /** |
825 | * ide_spin_wait_hwgroup - wait for group | |
826 | * @drive: drive in the group | |
827 | * | |
828 | * Wait for an IDE device group to go non busy and then return | |
829 | * holding the ide_lock which guards the hwgroup->busy status | |
830 | * and right to use it. | |
831 | */ | |
832 | ||
833 | int ide_spin_wait_hwgroup (ide_drive_t *drive) | |
834 | { | |
835 | ide_hwgroup_t *hwgroup = HWGROUP(drive); | |
836 | unsigned long timeout = jiffies + (3 * HZ); | |
837 | ||
838 | spin_lock_irq(&ide_lock); | |
839 | ||
840 | while (hwgroup->busy) { | |
841 | unsigned long lflags; | |
842 | spin_unlock_irq(&ide_lock); | |
843 | local_irq_set(lflags); | |
844 | if (time_after(jiffies, timeout)) { | |
845 | local_irq_restore(lflags); | |
846 | printk(KERN_ERR "%s: channel busy\n", drive->name); | |
847 | return -EBUSY; | |
848 | } | |
849 | local_irq_restore(lflags); | |
850 | spin_lock_irq(&ide_lock); | |
851 | } | |
852 | return 0; | |
853 | } | |
854 | ||
855 | EXPORT_SYMBOL(ide_spin_wait_hwgroup); | |
856 | ||
7662d046 | 857 | int set_io_32bit(ide_drive_t *drive, int arg) |
1da177e4 | 858 | { |
1497943e BZ |
859 | if (drive->no_io_32bit) |
860 | return -EPERM; | |
861 | ||
862 | if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) | |
863 | return -EINVAL; | |
864 | ||
1da177e4 LT |
865 | drive->io_32bit = arg; |
866 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
867 | if (HWIF(drive)->chipset == ide_dtc2278) | |
868 | HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg; | |
869 | #endif /* CONFIG_BLK_DEV_DTC2278 */ | |
870 | return 0; | |
871 | } | |
872 | ||
1497943e BZ |
873 | static int set_ksettings(ide_drive_t *drive, int arg) |
874 | { | |
875 | if (arg < 0 || arg > 1) | |
876 | return -EINVAL; | |
877 | ||
878 | if (ide_spin_wait_hwgroup(drive)) | |
879 | return -EBUSY; | |
880 | drive->keep_settings = arg; | |
881 | spin_unlock_irq(&ide_lock); | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
7662d046 | 886 | int set_using_dma(ide_drive_t *drive, int arg) |
1da177e4 LT |
887 | { |
888 | #ifdef CONFIG_BLK_DEV_IDEDMA | |
87996204 BZ |
889 | ide_hwif_t *hwif = drive->hwif; |
890 | int err = -EPERM; | |
891 | ||
1497943e BZ |
892 | if (arg < 0 || arg > 1) |
893 | return -EINVAL; | |
894 | ||
1da177e4 | 895 | if (!drive->id || !(drive->id->capability & 1)) |
87996204 BZ |
896 | goto out; |
897 | ||
898 | if (hwif->ide_dma_check == NULL) | |
899 | goto out; | |
900 | ||
901 | err = -EBUSY; | |
902 | if (ide_spin_wait_hwgroup(drive)) | |
903 | goto out; | |
904 | /* | |
905 | * set ->busy flag, unlock and let it ride | |
906 | */ | |
907 | hwif->hwgroup->busy = 1; | |
908 | spin_unlock_irq(&ide_lock); | |
909 | ||
910 | err = 0; | |
911 | ||
1da177e4 | 912 | if (arg) { |
793a9722 | 913 | hwif->dma_off_quietly(drive); |
87996204 BZ |
914 | if (ide_set_dma(drive) || hwif->ide_dma_on(drive)) |
915 | err = -EIO; | |
7469aaf6 BZ |
916 | } else |
917 | ide_dma_off(drive); | |
87996204 BZ |
918 | |
919 | /* | |
920 | * lock, clear ->busy flag and unlock before leaving | |
921 | */ | |
922 | spin_lock_irq(&ide_lock); | |
923 | hwif->hwgroup->busy = 0; | |
924 | spin_unlock_irq(&ide_lock); | |
925 | out: | |
926 | return err; | |
1da177e4 | 927 | #else |
1497943e BZ |
928 | if (arg < 0 || arg > 1) |
929 | return -EINVAL; | |
930 | ||
1da177e4 LT |
931 | return -EPERM; |
932 | #endif | |
933 | } | |
934 | ||
7662d046 | 935 | int set_pio_mode(ide_drive_t *drive, int arg) |
1da177e4 LT |
936 | { |
937 | struct request rq; | |
938 | ||
1497943e BZ |
939 | if (arg < 0 || arg > 255) |
940 | return -EINVAL; | |
941 | ||
1da177e4 LT |
942 | if (!HWIF(drive)->tuneproc) |
943 | return -ENOSYS; | |
944 | if (drive->special.b.set_tune) | |
945 | return -EBUSY; | |
946 | ide_init_drive_cmd(&rq); | |
947 | drive->tune_req = (u8) arg; | |
948 | drive->special.b.set_tune = 1; | |
949 | (void) ide_do_drive_cmd(drive, &rq, ide_wait); | |
950 | return 0; | |
951 | } | |
952 | ||
1497943e BZ |
953 | static int set_unmaskirq(ide_drive_t *drive, int arg) |
954 | { | |
955 | if (drive->no_unmask) | |
956 | return -EPERM; | |
957 | ||
958 | if (arg < 0 || arg > 1) | |
959 | return -EINVAL; | |
960 | ||
961 | if (ide_spin_wait_hwgroup(drive)) | |
962 | return -EBUSY; | |
963 | drive->unmask = arg; | |
964 | spin_unlock_irq(&ide_lock); | |
965 | ||
966 | return 0; | |
967 | } | |
968 | ||
1da177e4 LT |
969 | /** |
970 | * system_bus_clock - clock guess | |
971 | * | |
972 | * External version of the bus clock guess used by very old IDE drivers | |
973 | * for things like VLB timings. Should not be used. | |
974 | */ | |
975 | ||
976 | int system_bus_clock (void) | |
977 | { | |
978 | return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed )); | |
979 | } | |
980 | ||
981 | EXPORT_SYMBOL(system_bus_clock); | |
982 | ||
b887d2e6 | 983 | static int generic_ide_suspend(struct device *dev, pm_message_t mesg) |
1da177e4 LT |
984 | { |
985 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 986 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
987 | struct request rq; |
988 | struct request_pm_state rqpm; | |
989 | ide_task_t args; | |
990 | ||
e3a59b4d HR |
991 | /* Call ACPI _GTM only once */ |
992 | if (!(drive->dn % 2)) | |
993 | ide_acpi_get_timing(hwif); | |
994 | ||
1da177e4 LT |
995 | memset(&rq, 0, sizeof(rq)); |
996 | memset(&rqpm, 0, sizeof(rqpm)); | |
997 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 998 | rq.cmd_type = REQ_TYPE_PM_SUSPEND; |
1da177e4 | 999 | rq.special = &args; |
c00895ab | 1000 | rq.data = &rqpm; |
1da177e4 | 1001 | rqpm.pm_step = ide_pm_state_start_suspend; |
b887d2e6 DB |
1002 | if (mesg.event == PM_EVENT_PRETHAW) |
1003 | mesg.event = PM_EVENT_FREEZE; | |
1004 | rqpm.pm_state = mesg.event; | |
1da177e4 LT |
1005 | |
1006 | return ide_do_drive_cmd(drive, &rq, ide_wait); | |
1007 | } | |
1008 | ||
1009 | static int generic_ide_resume(struct device *dev) | |
1010 | { | |
1011 | ide_drive_t *drive = dev->driver_data; | |
e3a59b4d | 1012 | ide_hwif_t *hwif = HWIF(drive); |
1da177e4 LT |
1013 | struct request rq; |
1014 | struct request_pm_state rqpm; | |
1015 | ide_task_t args; | |
0d2157f7 | 1016 | int err; |
1da177e4 | 1017 | |
e3a59b4d HR |
1018 | /* Call ACPI _STM only once */ |
1019 | if (!(drive->dn % 2)) | |
1020 | ide_acpi_push_timing(hwif); | |
1021 | ||
1022 | ide_acpi_exec_tfs(drive); | |
1023 | ||
1da177e4 LT |
1024 | memset(&rq, 0, sizeof(rq)); |
1025 | memset(&rqpm, 0, sizeof(rqpm)); | |
1026 | memset(&args, 0, sizeof(args)); | |
4aff5e23 | 1027 | rq.cmd_type = REQ_TYPE_PM_RESUME; |
1da177e4 | 1028 | rq.special = &args; |
c00895ab | 1029 | rq.data = &rqpm; |
1da177e4 | 1030 | rqpm.pm_step = ide_pm_state_start_resume; |
ca078bae | 1031 | rqpm.pm_state = PM_EVENT_ON; |
1da177e4 | 1032 | |
0d2157f7 LT |
1033 | err = ide_do_drive_cmd(drive, &rq, ide_head_wait); |
1034 | ||
ce9b2b0a RW |
1035 | if (err == 0 && dev->driver) { |
1036 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1037 | ||
1038 | if (drv->resume) | |
1039 | drv->resume(drive); | |
1040 | } | |
0d2157f7 LT |
1041 | |
1042 | return err; | |
1da177e4 LT |
1043 | } |
1044 | ||
1045 | int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, | |
1046 | unsigned int cmd, unsigned long arg) | |
1047 | { | |
1497943e | 1048 | unsigned long flags; |
1da177e4 | 1049 | ide_driver_t *drv; |
1da177e4 | 1050 | void __user *p = (void __user *)arg; |
1497943e BZ |
1051 | int err = 0, (*setfunc)(ide_drive_t *, int); |
1052 | u8 *val; | |
1da177e4 | 1053 | |
1497943e BZ |
1054 | switch (cmd) { |
1055 | case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; | |
1056 | case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; | |
1057 | case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; | |
1058 | case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; | |
1059 | case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; | |
1060 | case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; | |
1061 | case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; | |
1062 | case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; | |
1063 | case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; | |
1da177e4 | 1064 | } |
1da177e4 LT |
1065 | |
1066 | switch (cmd) { | |
1da177e4 LT |
1067 | case HDIO_OBSOLETE_IDENTITY: |
1068 | case HDIO_GET_IDENTITY: | |
1069 | if (bdev != bdev->bd_contains) | |
1070 | return -EINVAL; | |
1071 | if (drive->id_read == 0) | |
1072 | return -ENOMSG; | |
1073 | if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142)) | |
1074 | return -EFAULT; | |
1075 | return 0; | |
1076 | ||
1077 | case HDIO_GET_NICE: | |
1078 | return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | | |
1079 | drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP | | |
1080 | drive->nice0 << IDE_NICE_0 | | |
1081 | drive->nice1 << IDE_NICE_1 | | |
1082 | drive->nice2 << IDE_NICE_2, | |
1083 | (long __user *) arg); | |
1084 | ||
1085 | #ifdef CONFIG_IDE_TASK_IOCTL | |
1086 | case HDIO_DRIVE_TASKFILE: | |
1087 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
1088 | return -EACCES; | |
1089 | switch(drive->media) { | |
1090 | case ide_disk: | |
1091 | return ide_taskfile_ioctl(drive, cmd, arg); | |
1092 | default: | |
1093 | return -ENOMSG; | |
1094 | } | |
1095 | #endif /* CONFIG_IDE_TASK_IOCTL */ | |
1096 | ||
1097 | case HDIO_DRIVE_CMD: | |
1098 | if (!capable(CAP_SYS_RAWIO)) | |
1099 | return -EACCES; | |
1100 | return ide_cmd_ioctl(drive, cmd, arg); | |
1101 | ||
1102 | case HDIO_DRIVE_TASK: | |
1103 | if (!capable(CAP_SYS_RAWIO)) | |
1104 | return -EACCES; | |
1105 | return ide_task_ioctl(drive, cmd, arg); | |
1106 | ||
1107 | case HDIO_SCAN_HWIF: | |
1108 | { | |
1109 | hw_regs_t hw; | |
1110 | int args[3]; | |
1111 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1112 | if (copy_from_user(args, p, 3 * sizeof(int))) | |
1113 | return -EFAULT; | |
1114 | memset(&hw, 0, sizeof(hw)); | |
1115 | ide_init_hwif_ports(&hw, (unsigned long) args[0], | |
1116 | (unsigned long) args[1], NULL); | |
1117 | hw.irq = args[2]; | |
869c56ee | 1118 | if (ide_register_hw(&hw, 0, NULL) == -1) |
1da177e4 LT |
1119 | return -EIO; |
1120 | return 0; | |
1121 | } | |
1122 | case HDIO_UNREGISTER_HWIF: | |
1123 | if (!capable(CAP_SYS_RAWIO)) return -EACCES; | |
1124 | /* (arg > MAX_HWIFS) checked in function */ | |
1125 | ide_unregister(arg); | |
1126 | return 0; | |
1127 | case HDIO_SET_NICE: | |
1128 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1129 | if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) | |
1130 | return -EPERM; | |
1131 | drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; | |
1132 | drv = *(ide_driver_t **)bdev->bd_disk->private_data; | |
1133 | if (drive->dsc_overlap && !drv->supports_dsc_overlap) { | |
1134 | drive->dsc_overlap = 0; | |
1135 | return -EPERM; | |
1136 | } | |
1137 | drive->nice1 = (arg >> IDE_NICE_1) & 1; | |
1138 | return 0; | |
1139 | case HDIO_DRIVE_RESET: | |
1140 | { | |
1141 | unsigned long flags; | |
1142 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; | |
1143 | ||
1144 | /* | |
1145 | * Abort the current command on the | |
1146 | * group if there is one, taking | |
1147 | * care not to allow anything else | |
1148 | * to be queued and to die on the | |
1149 | * spot if we miss one somehow | |
1150 | */ | |
1151 | ||
1152 | spin_lock_irqsave(&ide_lock, flags); | |
1153 | ||
913759ac AC |
1154 | if (HWGROUP(drive)->resetting) { |
1155 | spin_unlock_irqrestore(&ide_lock, flags); | |
1156 | return -EBUSY; | |
1157 | } | |
1158 | ||
1da177e4 LT |
1159 | ide_abort(drive, "drive reset"); |
1160 | ||
125e1874 | 1161 | BUG_ON(HWGROUP(drive)->handler); |
1da177e4 LT |
1162 | |
1163 | /* Ensure nothing gets queued after we | |
1164 | drop the lock. Reset will clear the busy */ | |
1165 | ||
1166 | HWGROUP(drive)->busy = 1; | |
1167 | spin_unlock_irqrestore(&ide_lock, flags); | |
1168 | (void) ide_do_reset(drive); | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
1173 | case CDROMEJECT: | |
1174 | case CDROMCLOSETRAY: | |
1175 | return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p); | |
1176 | ||
1177 | case HDIO_GET_BUSSTATE: | |
1178 | if (!capable(CAP_SYS_ADMIN)) | |
1179 | return -EACCES; | |
1180 | if (put_user(HWIF(drive)->bus_state, (long __user *)arg)) | |
1181 | return -EFAULT; | |
1182 | return 0; | |
1183 | ||
1184 | case HDIO_SET_BUSSTATE: | |
1185 | if (!capable(CAP_SYS_ADMIN)) | |
1186 | return -EACCES; | |
1187 | if (HWIF(drive)->busproc) | |
1188 | return HWIF(drive)->busproc(drive, (int)arg); | |
1189 | return -EOPNOTSUPP; | |
1190 | default: | |
1191 | return -EINVAL; | |
1192 | } | |
1497943e BZ |
1193 | |
1194 | read_val: | |
1195 | down(&ide_setting_sem); | |
1196 | spin_lock_irqsave(&ide_lock, flags); | |
1197 | err = *val; | |
1198 | spin_unlock_irqrestore(&ide_lock, flags); | |
1199 | up(&ide_setting_sem); | |
1200 | return err >= 0 ? put_user(err, (long __user *)arg) : err; | |
1201 | ||
1202 | set_val: | |
1203 | if (bdev != bdev->bd_contains) | |
1204 | err = -EINVAL; | |
1205 | else { | |
1206 | if (!capable(CAP_SYS_ADMIN)) | |
1207 | err = -EACCES; | |
1208 | else { | |
1209 | down(&ide_setting_sem); | |
1210 | err = setfunc(drive, arg); | |
1211 | up(&ide_setting_sem); | |
1212 | } | |
1213 | } | |
1214 | return err; | |
1da177e4 LT |
1215 | } |
1216 | ||
1217 | EXPORT_SYMBOL(generic_ide_ioctl); | |
1218 | ||
1219 | /* | |
1220 | * stridx() returns the offset of c within s, | |
1221 | * or -1 if c is '\0' or not found within s. | |
1222 | */ | |
1223 | static int __init stridx (const char *s, char c) | |
1224 | { | |
1225 | char *i = strchr(s, c); | |
1226 | return (i && c) ? i - s : -1; | |
1227 | } | |
1228 | ||
1229 | /* | |
1230 | * match_parm() does parsing for ide_setup(): | |
1231 | * | |
1232 | * 1. the first char of s must be '='. | |
1233 | * 2. if the remainder matches one of the supplied keywords, | |
1234 | * the index (1 based) of the keyword is negated and returned. | |
1235 | * 3. if the remainder is a series of no more than max_vals numbers | |
1236 | * separated by commas, the numbers are saved in vals[] and a | |
1237 | * count of how many were saved is returned. Base10 is assumed, | |
1238 | * and base16 is allowed when prefixed with "0x". | |
1239 | * 4. otherwise, zero is returned. | |
1240 | */ | |
1241 | static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals) | |
1242 | { | |
1243 | static const char *decimal = "0123456789"; | |
1244 | static const char *hex = "0123456789abcdef"; | |
1245 | int i, n; | |
1246 | ||
1247 | if (*s++ == '=') { | |
1248 | /* | |
1249 | * Try matching against the supplied keywords, | |
1250 | * and return -(index+1) if we match one | |
1251 | */ | |
1252 | if (keywords != NULL) { | |
1253 | for (i = 0; *keywords != NULL; ++i) { | |
1254 | if (!strcmp(s, *keywords++)) | |
1255 | return -(i+1); | |
1256 | } | |
1257 | } | |
1258 | /* | |
1259 | * Look for a series of no more than "max_vals" | |
1260 | * numeric values separated by commas, in base10, | |
1261 | * or base16 when prefixed with "0x". | |
1262 | * Return a count of how many were found. | |
1263 | */ | |
1264 | for (n = 0; (i = stridx(decimal, *s)) >= 0;) { | |
1265 | vals[n] = i; | |
1266 | while ((i = stridx(decimal, *++s)) >= 0) | |
1267 | vals[n] = (vals[n] * 10) + i; | |
1268 | if (*s == 'x' && !vals[n]) { | |
1269 | while ((i = stridx(hex, *++s)) >= 0) | |
1270 | vals[n] = (vals[n] * 0x10) + i; | |
1271 | } | |
1272 | if (++n == max_vals) | |
1273 | break; | |
1274 | if (*s == ',' || *s == ';') | |
1275 | ++s; | |
1276 | } | |
1277 | if (!*s) | |
1278 | return n; | |
1279 | } | |
1280 | return 0; /* zero = nothing matched */ | |
1281 | } | |
1282 | ||
1283 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
84913882 | 1284 | extern int probe_ali14xx; |
1da177e4 LT |
1285 | extern int ali14xx_init(void); |
1286 | #endif | |
1287 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
84913882 | 1288 | extern int probe_umc8672; |
1da177e4 LT |
1289 | extern int umc8672_init(void); |
1290 | #endif | |
1291 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
84913882 | 1292 | extern int probe_dtc2278; |
1da177e4 LT |
1293 | extern int dtc2278_init(void); |
1294 | #endif | |
1295 | #ifdef CONFIG_BLK_DEV_HT6560B | |
84913882 | 1296 | extern int probe_ht6560b; |
1da177e4 LT |
1297 | extern int ht6560b_init(void); |
1298 | #endif | |
1299 | #ifdef CONFIG_BLK_DEV_QD65XX | |
84913882 | 1300 | extern int probe_qd65xx; |
1da177e4 LT |
1301 | extern int qd65xx_init(void); |
1302 | #endif | |
1303 | ||
1304 | static int __initdata is_chipset_set[MAX_HWIFS]; | |
1305 | ||
1306 | /* | |
1307 | * ide_setup() gets called VERY EARLY during initialization, | |
1308 | * to handle kernel "command line" strings beginning with "hdx=" or "ide". | |
1309 | * | |
1310 | * Remember to update Documentation/ide.txt if you change something here. | |
1311 | */ | |
1312 | static int __init ide_setup(char *s) | |
1313 | { | |
1314 | int i, vals[3]; | |
1315 | ide_hwif_t *hwif; | |
1316 | ide_drive_t *drive; | |
1317 | unsigned int hw, unit; | |
1318 | const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); | |
1319 | const char max_hwif = '0' + (MAX_HWIFS - 1); | |
1320 | ||
1321 | ||
1322 | if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */ | |
1323 | return 0; /* driver and not us */ | |
1324 | ||
1325 | if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2)) | |
1326 | return 0; | |
1327 | ||
1328 | printk(KERN_INFO "ide_setup: %s", s); | |
1329 | init_ide_data (); | |
1330 | ||
1331 | #ifdef CONFIG_BLK_DEV_IDEDOUBLER | |
1332 | if (!strcmp(s, "ide=doubler")) { | |
1333 | extern int ide_doubler; | |
1334 | ||
1335 | printk(" : Enabled support for IDE doublers\n"); | |
1336 | ide_doubler = 1; | |
1337 | return 1; | |
1338 | } | |
1339 | #endif /* CONFIG_BLK_DEV_IDEDOUBLER */ | |
1340 | ||
1341 | if (!strcmp(s, "ide=nodma")) { | |
1342 | printk(" : Prevented DMA\n"); | |
1343 | noautodma = 1; | |
1344 | return 1; | |
1345 | } | |
1346 | ||
6d208b39 | 1347 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 LT |
1348 | if (!strcmp(s, "ide=reverse")) { |
1349 | ide_scan_direction = 1; | |
1350 | printk(" : Enabled support for IDE inverse scan order.\n"); | |
1351 | return 1; | |
1352 | } | |
6d208b39 | 1353 | #endif |
1da177e4 | 1354 | |
e3a59b4d HR |
1355 | #ifdef CONFIG_BLK_DEV_IDEACPI |
1356 | if (!strcmp(s, "ide=noacpi")) { | |
1357 | //printk(" : Disable IDE ACPI support.\n"); | |
1358 | ide_noacpi = 1; | |
1359 | return 1; | |
1360 | } | |
1361 | if (!strcmp(s, "ide=acpigtf")) { | |
1362 | //printk(" : Enable IDE ACPI _GTF support.\n"); | |
1363 | ide_noacpitfs = 0; | |
1364 | return 1; | |
1365 | } | |
1366 | if (!strcmp(s, "ide=acpionboot")) { | |
1367 | //printk(" : Call IDE ACPI methods on boot.\n"); | |
1368 | ide_noacpionboot = 0; | |
1369 | return 1; | |
1370 | } | |
1371 | #endif /* CONFIG_BLK_DEV_IDEACPI */ | |
1372 | ||
1da177e4 LT |
1373 | /* |
1374 | * Look for drive options: "hdx=" | |
1375 | */ | |
1376 | if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { | |
1377 | const char *hd_words[] = { | |
b6209a90 | 1378 | "none", "noprobe", "nowerr", "cdrom", "minus5", |
1da177e4 | 1379 | "autotune", "noautotune", "minus8", "swapdata", "bswap", |
36193484 | 1380 | "noflush", "remap", "remap63", "scsi", NULL }; |
1da177e4 LT |
1381 | unit = s[2] - 'a'; |
1382 | hw = unit / MAX_DRIVES; | |
1383 | unit = unit % MAX_DRIVES; | |
1384 | hwif = &ide_hwifs[hw]; | |
1385 | drive = &hwif->drives[unit]; | |
1386 | if (strncmp(s + 4, "ide-", 4) == 0) { | |
1387 | strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req)); | |
1388 | goto done; | |
1389 | } | |
1390 | switch (match_parm(&s[3], hd_words, vals, 3)) { | |
1391 | case -1: /* "none" */ | |
1392 | case -2: /* "noprobe" */ | |
1393 | drive->noprobe = 1; | |
1394 | goto done; | |
1395 | case -3: /* "nowerr" */ | |
1396 | drive->bad_wstat = BAD_R_STAT; | |
1397 | hwif->noprobe = 0; | |
1398 | goto done; | |
1399 | case -4: /* "cdrom" */ | |
1400 | drive->present = 1; | |
1401 | drive->media = ide_cdrom; | |
1402 | /* an ATAPI device ignores DRDY */ | |
1403 | drive->ready_stat = 0; | |
1404 | hwif->noprobe = 0; | |
1405 | goto done; | |
1da177e4 LT |
1406 | case -6: /* "autotune" */ |
1407 | drive->autotune = IDE_TUNE_AUTO; | |
1408 | goto obsolete_option; | |
1409 | case -7: /* "noautotune" */ | |
1410 | drive->autotune = IDE_TUNE_NOAUTO; | |
1411 | goto obsolete_option; | |
1412 | case -9: /* "swapdata" */ | |
1413 | case -10: /* "bswap" */ | |
1414 | drive->bswap = 1; | |
1415 | goto done; | |
36193484 JA |
1416 | case -11: /* noflush */ |
1417 | drive->noflush = 1; | |
1418 | goto done; | |
1da177e4 LT |
1419 | case -12: /* "remap" */ |
1420 | drive->remap_0_to_1 = 1; | |
1421 | goto done; | |
1422 | case -13: /* "remap63" */ | |
1423 | drive->sect0 = 63; | |
1424 | goto done; | |
1425 | case -14: /* "scsi" */ | |
1426 | drive->scsi = 1; | |
1427 | goto done; | |
1428 | case 3: /* cyl,head,sect */ | |
1429 | drive->media = ide_disk; | |
1430 | drive->ready_stat = READY_STAT; | |
1431 | drive->cyl = drive->bios_cyl = vals[0]; | |
1432 | drive->head = drive->bios_head = vals[1]; | |
1433 | drive->sect = drive->bios_sect = vals[2]; | |
1434 | drive->present = 1; | |
1435 | drive->forced_geom = 1; | |
1436 | hwif->noprobe = 0; | |
1437 | goto done; | |
1438 | default: | |
1439 | goto bad_option; | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e') | |
1444 | goto bad_option; | |
1445 | /* | |
1446 | * Look for bus speed option: "idebus=" | |
1447 | */ | |
1448 | if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') { | |
1449 | if (match_parm(&s[6], NULL, vals, 1) != 1) | |
1450 | goto bad_option; | |
1451 | if (vals[0] >= 20 && vals[0] <= 66) { | |
1452 | idebus_parameter = vals[0]; | |
1453 | } else | |
1454 | printk(" -- BAD BUS SPEED! Expected value from 20 to 66"); | |
1455 | goto done; | |
1456 | } | |
1457 | /* | |
1458 | * Look for interface options: "idex=" | |
1459 | */ | |
1460 | if (s[3] >= '0' && s[3] <= max_hwif) { | |
1461 | /* | |
1462 | * Be VERY CAREFUL changing this: note hardcoded indexes below | |
1463 | * (-8, -9, -10) are reserved to ease the hardcoding. | |
1464 | */ | |
1465 | static const char *ide_words[] = { | |
b6209a90 | 1466 | "noprobe", "serialize", "minus3", "minus4", |
1da177e4 LT |
1467 | "reset", "dma", "ata66", "minus8", "minus9", |
1468 | "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", | |
1469 | "dtc2278", "umc8672", "ali14xx", NULL }; | |
1470 | hw = s[3] - '0'; | |
1471 | hwif = &ide_hwifs[hw]; | |
1472 | i = match_parm(&s[4], ide_words, vals, 3); | |
1473 | ||
1474 | /* | |
1475 | * Cryptic check to ensure chipset not already set for hwif. | |
1476 | * Note: we can't depend on hwif->chipset here. | |
1477 | */ | |
1478 | if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) { | |
1479 | /* chipset already specified */ | |
1480 | if (is_chipset_set[hw]) | |
1481 | goto bad_option; | |
1482 | if (i > -18 && i <= -11) { | |
1483 | /* these drivers are for "ide0=" only */ | |
1484 | if (hw != 0) | |
1485 | goto bad_hwif; | |
1486 | /* chipset already specified for 2nd port */ | |
1487 | if (is_chipset_set[hw+1]) | |
1488 | goto bad_option; | |
1489 | } | |
1490 | is_chipset_set[hw] = 1; | |
1491 | printk("\n"); | |
1492 | } | |
1493 | ||
1494 | switch (i) { | |
1495 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1496 | case -17: /* "ali14xx" */ | |
1497 | probe_ali14xx = 1; | |
1498 | goto done; | |
1499 | #endif | |
1500 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1501 | case -16: /* "umc8672" */ | |
1502 | probe_umc8672 = 1; | |
1503 | goto done; | |
1504 | #endif | |
1505 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1506 | case -15: /* "dtc2278" */ | |
1507 | probe_dtc2278 = 1; | |
1508 | goto done; | |
1509 | #endif | |
1510 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1511 | case -14: /* "cmd640_vlb" */ | |
1512 | { | |
1513 | extern int cmd640_vlb; /* flag for cmd640.c */ | |
1514 | cmd640_vlb = 1; | |
1515 | goto done; | |
1516 | } | |
1517 | #endif | |
1518 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1519 | case -13: /* "ht6560b" */ | |
1520 | probe_ht6560b = 1; | |
1521 | goto done; | |
1522 | #endif | |
1523 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1524 | case -12: /* "qd65xx" */ | |
1525 | probe_qd65xx = 1; | |
1526 | goto done; | |
1527 | #endif | |
1528 | #ifdef CONFIG_BLK_DEV_4DRIVES | |
1529 | case -11: /* "four" drives on one set of ports */ | |
1530 | { | |
1531 | ide_hwif_t *mate = &ide_hwifs[hw^1]; | |
1532 | mate->drives[0].select.all ^= 0x20; | |
1533 | mate->drives[1].select.all ^= 0x20; | |
1534 | hwif->chipset = mate->chipset = ide_4drives; | |
1535 | mate->irq = hwif->irq; | |
1536 | memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); | |
b6209a90 BZ |
1537 | hwif->mate = mate; |
1538 | mate->mate = hwif; | |
1539 | hwif->serialized = mate->serialized = 1; | |
1540 | goto obsolete_option; | |
1da177e4 LT |
1541 | } |
1542 | #endif /* CONFIG_BLK_DEV_4DRIVES */ | |
1543 | case -10: /* minus10 */ | |
1544 | case -9: /* minus9 */ | |
1545 | case -8: /* minus8 */ | |
b6209a90 BZ |
1546 | case -4: |
1547 | case -3: | |
1da177e4 LT |
1548 | goto bad_option; |
1549 | case -7: /* ata66 */ | |
1550 | #ifdef CONFIG_BLK_DEV_IDEPCI | |
1551 | hwif->udma_four = 1; | |
1552 | goto obsolete_option; | |
1553 | #else | |
1554 | goto bad_hwif; | |
1555 | #endif | |
1556 | case -6: /* dma */ | |
1557 | hwif->autodma = 1; | |
1558 | goto obsolete_option; | |
1559 | case -5: /* "reset" */ | |
1560 | hwif->reset = 1; | |
1561 | goto obsolete_option; | |
1da177e4 | 1562 | case -2: /* "serialize" */ |
1da177e4 LT |
1563 | hwif->mate = &ide_hwifs[hw^1]; |
1564 | hwif->mate->mate = hwif; | |
1565 | hwif->serialized = hwif->mate->serialized = 1; | |
1566 | goto obsolete_option; | |
1567 | ||
1568 | case -1: /* "noprobe" */ | |
1569 | hwif->noprobe = 1; | |
1570 | goto done; | |
1571 | ||
1572 | case 1: /* base */ | |
1573 | vals[1] = vals[0] + 0x206; /* default ctl */ | |
1574 | case 2: /* base,ctl */ | |
1575 | vals[2] = 0; /* default irq = probe for it */ | |
1576 | case 3: /* base,ctl,irq */ | |
1577 | hwif->hw.irq = vals[2]; | |
1578 | ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); | |
1579 | memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); | |
1580 | hwif->irq = vals[2]; | |
1581 | hwif->noprobe = 0; | |
1582 | hwif->chipset = ide_forced; | |
1583 | goto obsolete_option; | |
1584 | ||
1585 | case 0: goto bad_option; | |
1586 | default: | |
1587 | printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n"); | |
1588 | return 1; | |
1589 | } | |
1590 | } | |
1591 | bad_option: | |
1592 | printk(" -- BAD OPTION\n"); | |
1593 | return 1; | |
1594 | obsolete_option: | |
1595 | printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); | |
1596 | return 1; | |
1597 | bad_hwif: | |
1598 | printk("-- NOT SUPPORTED ON ide%d", hw); | |
1599 | done: | |
1600 | printk("\n"); | |
1601 | return 1; | |
1602 | } | |
1603 | ||
eb797227 AV |
1604 | extern void __init pnpide_init(void); |
1605 | extern void __exit pnpide_exit(void); | |
1606 | extern void __init h8300_ide_init(void); | |
1da177e4 LT |
1607 | |
1608 | /* | |
1609 | * probe_for_hwifs() finds/initializes "known" IDE interfaces | |
1610 | */ | |
1611 | static void __init probe_for_hwifs (void) | |
1612 | { | |
6d208b39 | 1613 | #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
1da177e4 | 1614 | ide_scan_pcibus(ide_scan_direction); |
6d208b39 | 1615 | #endif |
1da177e4 LT |
1616 | |
1617 | #ifdef CONFIG_ETRAX_IDE | |
1618 | { | |
1619 | extern void init_e100_ide(void); | |
1620 | init_e100_ide(); | |
1621 | } | |
1622 | #endif /* CONFIG_ETRAX_IDE */ | |
1623 | #ifdef CONFIG_BLK_DEV_CMD640 | |
1624 | { | |
1625 | extern void ide_probe_for_cmd640x(void); | |
1626 | ide_probe_for_cmd640x(); | |
1627 | } | |
1628 | #endif /* CONFIG_BLK_DEV_CMD640 */ | |
1629 | #ifdef CONFIG_BLK_DEV_IDE_PMAC | |
1630 | { | |
9e5755bc AM |
1631 | extern int pmac_ide_probe(void); |
1632 | (void)pmac_ide_probe(); | |
1da177e4 LT |
1633 | } |
1634 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ | |
1635 | #ifdef CONFIG_BLK_DEV_GAYLE | |
1636 | { | |
1637 | extern void gayle_init(void); | |
1638 | gayle_init(); | |
1639 | } | |
1640 | #endif /* CONFIG_BLK_DEV_GAYLE */ | |
1641 | #ifdef CONFIG_BLK_DEV_FALCON_IDE | |
1642 | { | |
1643 | extern void falconide_init(void); | |
1644 | falconide_init(); | |
1645 | } | |
1646 | #endif /* CONFIG_BLK_DEV_FALCON_IDE */ | |
1647 | #ifdef CONFIG_BLK_DEV_MAC_IDE | |
1648 | { | |
1649 | extern void macide_init(void); | |
1650 | macide_init(); | |
1651 | } | |
1652 | #endif /* CONFIG_BLK_DEV_MAC_IDE */ | |
1653 | #ifdef CONFIG_BLK_DEV_Q40IDE | |
1654 | { | |
1655 | extern void q40ide_init(void); | |
1656 | q40ide_init(); | |
1657 | } | |
1658 | #endif /* CONFIG_BLK_DEV_Q40IDE */ | |
1659 | #ifdef CONFIG_BLK_DEV_BUDDHA | |
1660 | { | |
1661 | extern void buddha_init(void); | |
1662 | buddha_init(); | |
1663 | } | |
1664 | #endif /* CONFIG_BLK_DEV_BUDDHA */ | |
1665 | #ifdef CONFIG_BLK_DEV_IDEPNP | |
1666 | pnpide_init(); | |
1667 | #endif | |
1668 | #ifdef CONFIG_H8300 | |
1669 | h8300_ide_init(); | |
1670 | #endif | |
1671 | } | |
1672 | ||
1da177e4 LT |
1673 | /* |
1674 | * Probe module | |
1675 | */ | |
1676 | ||
1677 | EXPORT_SYMBOL(ide_lock); | |
1678 | ||
8604affd BZ |
1679 | static int ide_bus_match(struct device *dev, struct device_driver *drv) |
1680 | { | |
1681 | return 1; | |
1682 | } | |
1683 | ||
263756ec KS |
1684 | static char *media_string(ide_drive_t *drive) |
1685 | { | |
1686 | switch (drive->media) { | |
1687 | case ide_disk: | |
1688 | return "disk"; | |
1689 | case ide_cdrom: | |
1690 | return "cdrom"; | |
1691 | case ide_tape: | |
1692 | return "tape"; | |
1693 | case ide_floppy: | |
1694 | return "floppy"; | |
a7a832de DK |
1695 | case ide_optical: |
1696 | return "optical"; | |
263756ec KS |
1697 | default: |
1698 | return "UNKNOWN"; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1703 | { | |
1704 | ide_drive_t *drive = to_ide_device(dev); | |
1705 | return sprintf(buf, "%s\n", media_string(drive)); | |
1706 | } | |
1707 | ||
1708 | static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1709 | { | |
1710 | ide_drive_t *drive = to_ide_device(dev); | |
1711 | return sprintf(buf, "%s\n", drive->name); | |
1712 | } | |
1713 | ||
1714 | static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) | |
1715 | { | |
1716 | ide_drive_t *drive = to_ide_device(dev); | |
1717 | return sprintf(buf, "ide:m-%s\n", media_string(drive)); | |
1718 | } | |
1719 | ||
1720 | static struct device_attribute ide_dev_attrs[] = { | |
1721 | __ATTR_RO(media), | |
1722 | __ATTR_RO(drivename), | |
1723 | __ATTR_RO(modalias), | |
1724 | __ATTR_NULL | |
1725 | }; | |
1726 | ||
1727 | static int ide_uevent(struct device *dev, char **envp, int num_envp, | |
1728 | char *buffer, int buffer_size) | |
1729 | { | |
1730 | ide_drive_t *drive = to_ide_device(dev); | |
1731 | int i = 0; | |
1732 | int length = 0; | |
1733 | ||
1734 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, | |
1735 | "MEDIA=%s", media_string(drive)); | |
1736 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, | |
1737 | "DRIVENAME=%s", drive->name); | |
1738 | add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, | |
1739 | "MODALIAS=ide:m-%s", media_string(drive)); | |
1740 | envp[i] = NULL; | |
1741 | return 0; | |
1742 | } | |
1743 | ||
4031bbe4 RK |
1744 | static int generic_ide_probe(struct device *dev) |
1745 | { | |
1746 | ide_drive_t *drive = to_ide_device(dev); | |
1747 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1748 | ||
1749 | return drv->probe ? drv->probe(drive) : -ENODEV; | |
1750 | } | |
1751 | ||
1752 | static int generic_ide_remove(struct device *dev) | |
1753 | { | |
1754 | ide_drive_t *drive = to_ide_device(dev); | |
1755 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1756 | ||
1757 | if (drv->remove) | |
1758 | drv->remove(drive); | |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
1763 | static void generic_ide_shutdown(struct device *dev) | |
1764 | { | |
1765 | ide_drive_t *drive = to_ide_device(dev); | |
1766 | ide_driver_t *drv = to_ide_driver(dev->driver); | |
1767 | ||
1768 | if (dev->driver && drv->shutdown) | |
1769 | drv->shutdown(drive); | |
1770 | } | |
1771 | ||
1da177e4 LT |
1772 | struct bus_type ide_bus_type = { |
1773 | .name = "ide", | |
8604affd | 1774 | .match = ide_bus_match, |
263756ec | 1775 | .uevent = ide_uevent, |
4031bbe4 RK |
1776 | .probe = generic_ide_probe, |
1777 | .remove = generic_ide_remove, | |
1778 | .shutdown = generic_ide_shutdown, | |
263756ec | 1779 | .dev_attrs = ide_dev_attrs, |
1da177e4 LT |
1780 | .suspend = generic_ide_suspend, |
1781 | .resume = generic_ide_resume, | |
1782 | }; | |
1783 | ||
8604affd BZ |
1784 | EXPORT_SYMBOL_GPL(ide_bus_type); |
1785 | ||
1da177e4 LT |
1786 | /* |
1787 | * This is gets invoked once during initialization, to set *everything* up | |
1788 | */ | |
1789 | static int __init ide_init(void) | |
1790 | { | |
349ae23f RD |
1791 | int ret; |
1792 | ||
1da177e4 | 1793 | printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); |
1da177e4 LT |
1794 | system_bus_speed = ide_system_bus_speed(); |
1795 | ||
349ae23f RD |
1796 | ret = bus_register(&ide_bus_type); |
1797 | if (ret < 0) { | |
1798 | printk(KERN_WARNING "IDE: bus_register error: %d\n", ret); | |
1799 | return ret; | |
1800 | } | |
1da177e4 LT |
1801 | |
1802 | init_ide_data(); | |
1803 | ||
5cbf79cd | 1804 | proc_ide_create(); |
1da177e4 LT |
1805 | |
1806 | #ifdef CONFIG_BLK_DEV_ALI14XX | |
1807 | if (probe_ali14xx) | |
1808 | (void)ali14xx_init(); | |
1809 | #endif | |
1810 | #ifdef CONFIG_BLK_DEV_UMC8672 | |
1811 | if (probe_umc8672) | |
1812 | (void)umc8672_init(); | |
1813 | #endif | |
1814 | #ifdef CONFIG_BLK_DEV_DTC2278 | |
1815 | if (probe_dtc2278) | |
1816 | (void)dtc2278_init(); | |
1817 | #endif | |
1818 | #ifdef CONFIG_BLK_DEV_HT6560B | |
1819 | if (probe_ht6560b) | |
1820 | (void)ht6560b_init(); | |
1821 | #endif | |
1822 | #ifdef CONFIG_BLK_DEV_QD65XX | |
1823 | if (probe_qd65xx) | |
1824 | (void)qd65xx_init(); | |
1825 | #endif | |
1826 | ||
1da177e4 LT |
1827 | /* Probe for special PCI and other "known" interface chipsets. */ |
1828 | probe_for_hwifs(); | |
1da177e4 | 1829 | |
1da177e4 LT |
1830 | return 0; |
1831 | } | |
1832 | ||
1833 | #ifdef MODULE | |
1834 | static char *options = NULL; | |
1835 | module_param(options, charp, 0); | |
1836 | MODULE_LICENSE("GPL"); | |
1837 | ||
1838 | static void __init parse_options (char *line) | |
1839 | { | |
1840 | char *next = line; | |
1841 | ||
1842 | if (line == NULL || !*line) | |
1843 | return; | |
1844 | while ((line = next) != NULL) { | |
1845 | if ((next = strchr(line,' ')) != NULL) | |
1846 | *next++ = 0; | |
1847 | if (!ide_setup(line)) | |
1848 | printk (KERN_INFO "Unknown option '%s'\n", line); | |
1849 | } | |
1850 | } | |
1851 | ||
fbd8ad30 | 1852 | int __init init_module (void) |
1da177e4 LT |
1853 | { |
1854 | parse_options(options); | |
1855 | return ide_init(); | |
1856 | } | |
1857 | ||
eb797227 | 1858 | void __exit cleanup_module (void) |
1da177e4 LT |
1859 | { |
1860 | int index; | |
1861 | ||
1862 | for (index = 0; index < MAX_HWIFS; ++index) | |
1863 | ide_unregister(index); | |
1864 | ||
6855036a TH |
1865 | #ifdef CONFIG_BLK_DEV_IDEPNP |
1866 | pnpide_exit(); | |
1867 | #endif | |
1868 | ||
1da177e4 | 1869 | proc_ide_destroy(); |
1da177e4 LT |
1870 | |
1871 | bus_unregister(&ide_bus_type); | |
1872 | } | |
1873 | ||
1874 | #else /* !MODULE */ | |
1875 | ||
1876 | __setup("", ide_setup); | |
1877 | ||
1878 | module_init(ide_init); | |
1879 | ||
1880 | #endif /* MODULE */ |