blob: 67ce697a9d51f98036ecb8e907788ee37bd18898 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bartlomiej Zolnierkiewicz59bca8c2008-02-01 23:09:33 +01002 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 */
5
6/*
7 * Mostly written by Mark Lord <mlord@pobox.com>
8 * and Gadi Oxman <gadio@netvision.net.il>
9 * and Andre Hedrick <andre@linux-ide.org>
10 *
11 * See linux/MAINTAINERS for address of current maintainer.
12 *
13 * This is the multiple IDE interface driver, as evolved from hd.c.
14 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
15 * (usually 14 & 15).
16 * There can be up to two drives per interface, as per the ATA-2 spec.
17 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 * ...
19 *
20 * From hd.c:
21 * |
22 * | It traverses the request-list, using interrupts to jump between functions.
23 * | As nearly all functions can be called within interrupts, we may not sleep.
24 * | Special care is recommended. Have Fun!
25 * |
26 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
27 * |
28 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
29 * | in the early extended-partition checks and added DM partitions.
30 * |
31 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
32 * |
33 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
34 * | and general streamlining by Mark Lord (mlord@pobox.com).
35 *
36 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
37 *
38 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
39 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
40 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
41 *
42 * This was a rewrite of just about everything from hd.c, though some original
43 * code is still sprinkled about. Think of it as a major evolution, with
44 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 */
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#define _IDE_C /* Tell ide.h it's really us */
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/module.h>
50#include <linux/types.h>
51#include <linux/string.h>
52#include <linux/kernel.h>
53#include <linux/timer.h>
54#include <linux/mm.h>
55#include <linux/interrupt.h>
56#include <linux/major.h>
57#include <linux/errno.h>
58#include <linux/genhd.h>
59#include <linux/blkpg.h>
60#include <linux/slab.h>
61#include <linux/init.h>
62#include <linux/pci.h>
63#include <linux/delay.h>
64#include <linux/ide.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#include <linux/completion.h>
66#include <linux/reboot.h>
67#include <linux/cdrom.h>
68#include <linux/seq_file.h>
69#include <linux/device.h>
70#include <linux/bitops.h>
71
72#include <asm/byteorder.h>
73#include <asm/irq.h>
74#include <asm/uaccess.h>
75#include <asm/io.h>
76
77
78/* default maximum number of failures */
79#define IDE_DEFAULT_MAX_FAILURES 1
80
81static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
82 IDE2_MAJOR, IDE3_MAJOR,
83 IDE4_MAJOR, IDE5_MAJOR,
84 IDE6_MAJOR, IDE7_MAJOR,
85 IDE8_MAJOR, IDE9_MAJOR };
86
87static int idebus_parameter; /* holds the "idebus=" parameter */
88static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
Matthias Kaehlckeef298882007-07-09 23:17:55 +020090DEFINE_MUTEX(ide_cfg_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
92
Linus Torvalds1da177e2005-04-16 15:20:36 -070093int noautodma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
Hannes Reineckee3a59b42007-02-07 18:19:37 +010095#ifdef CONFIG_BLK_DEV_IDEACPI
96int ide_noacpi = 0;
97int ide_noacpitfs = 1;
98int ide_noacpionboot = 1;
99#endif
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101/*
102 * This is declared extern in ide.h, for access by other IDE modules:
103 */
104ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
105
106EXPORT_SYMBOL(ide_hwifs);
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108/*
109 * Do not even *think* about calling this!
110 */
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100111void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112{
113 unsigned int unit;
114
115 /* bulk initialize hwif & drive info with zeros */
116 memset(hwif, 0, sizeof(ide_hwif_t));
117
118 /* fill in any non-zero initial values */
119 hwif->index = index;
120 hwif->major = ide_hwif_to_major[index];
121
122 hwif->name[0] = 'i';
123 hwif->name[1] = 'd';
124 hwif->name[2] = 'e';
125 hwif->name[3] = '0' + index;
126
127 hwif->bus_state = BUSSTATE_ON;
128
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800129 init_completion(&hwif->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 default_hwif_iops(hwif);
132 default_hwif_transport(hwif);
133 for (unit = 0; unit < MAX_DRIVES; ++unit) {
134 ide_drive_t *drive = &hwif->drives[unit];
135
136 drive->media = ide_disk;
137 drive->select.all = (unit<<4)|0xa0;
138 drive->hwif = hwif;
139 drive->ctl = 0x08;
140 drive->ready_stat = READY_STAT;
141 drive->bad_wstat = BAD_W_STAT;
142 drive->special.b.recalibrate = 1;
143 drive->special.b.set_geometry = 1;
144 drive->name[0] = 'h';
145 drive->name[1] = 'd';
146 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
147 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
148 drive->using_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 drive->vdma = 0;
150 INIT_LIST_HEAD(&drive->list);
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800151 init_completion(&drive->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 }
153}
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100154EXPORT_SYMBOL_GPL(ide_init_port_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
157{
158 hw_regs_t hw;
159
160 memset(&hw, 0, sizeof(hw_regs_t));
161
162 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
165
166 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
167#ifdef CONFIG_BLK_DEV_HD
168 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
169 hwif->noprobe = 1; /* may be overridden by ide_setup() */
170#endif
171}
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173/*
174 * init_ide_data() sets reasonable default values into all fields
175 * of all instances of the hwifs and drives, but only on the first call.
176 * Subsequent calls have no effect (they don't wipe out anything).
177 *
178 * This routine is normally called at driver initialization time,
179 * but may also be called MUCH earlier during kernel "command-line"
180 * parameter processing. As such, we cannot depend on any other parts
181 * of the kernel (such as memory allocation) to be functioning yet.
182 *
183 * This is too bad, as otherwise we could dynamically allocate the
184 * ide_drive_t structs as needed, rather than always consuming memory
185 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
186 *
187 * FIXME: We should stuff the setup data into __init and copy the
188 * relevant hwifs/allocate them properly during boot.
189 */
190#define MAGIC_COOKIE 0x12345678
191static void __init init_ide_data (void)
192{
193 ide_hwif_t *hwif;
194 unsigned int index;
195 static unsigned long magic_cookie = MAGIC_COOKIE;
196
197 if (magic_cookie != MAGIC_COOKIE)
198 return; /* already initialized */
199 magic_cookie = 0;
200
201 /* Initialise all interface structures */
202 for (index = 0; index < MAX_HWIFS; ++index) {
203 hwif = &ide_hwifs[index];
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100204 ide_init_port_data(hwif, index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 init_hwif_default(hwif, index);
206#if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +0200207 hwif->irq =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
209#endif
210 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211}
212
213/**
214 * ide_system_bus_speed - guess bus speed
215 *
216 * ide_system_bus_speed() returns what we think is the system VESA/PCI
217 * bus speed (in MHz). This is used for calculating interface PIO timings.
218 * The default is 40 for known PCI systems, 50 otherwise.
219 * The "idebus=xx" parameter can be used to override this value.
220 * The actual value to be used is computed/displayed the first time
221 * through. Drivers should only use this as a last resort.
222 *
223 * Returns a guessed speed in MHz.
224 */
225
226static int ide_system_bus_speed(void)
227{
228#ifdef CONFIG_PCI
229 static struct pci_device_id pci_default[] = {
230 { PCI_DEVICE(PCI_ANY_ID, PCI_ANY_ID) },
231 { }
232 };
233#else
234#define pci_default 0
235#endif /* CONFIG_PCI */
236
Bartlomiej Zolnierkiewicz537f06c2008-02-01 23:09:35 +0100237 /* user supplied value */
238 if (idebus_parameter)
239 return idebus_parameter;
240
241 /* safe default value for PCI or VESA and PCI*/
242 return pci_dev_present(pci_default) ? 33 : 50;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243}
244
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200245ide_hwif_t * ide_find_port(unsigned long base)
246{
247 ide_hwif_t *hwif;
248 int i;
249
250 for (i = 0; i < MAX_HWIFS; i++) {
251 hwif = &ide_hwifs[i];
252 if (hwif->io_ports[IDE_DATA_OFFSET] == base)
253 goto found;
254 }
255
256 for (i = 0; i < MAX_HWIFS; i++) {
257 hwif = &ide_hwifs[i];
Bartlomiej Zolnierkiewicz2625cd52008-04-18 00:46:21 +0200258 if (hwif->chipset == ide_unknown)
Bartlomiej Zolnierkiewiczbaa8f3e2007-10-20 00:32:31 +0200259 goto found;
260 }
261
262 hwif = NULL;
263found:
264 return hwif;
265}
266
267EXPORT_SYMBOL_GPL(ide_find_port);
268
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269static struct resource* hwif_request_region(ide_hwif_t *hwif,
270 unsigned long addr, int num)
271{
272 struct resource *res = request_region(addr, num, hwif->name);
273
274 if (!res)
275 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
276 hwif->name, addr, addr+num-1);
277 return res;
278}
279
280/**
281 * ide_hwif_request_regions - request resources for IDE
282 * @hwif: interface to use
283 *
284 * Requests all the needed resources for an interface.
285 * Right now core IDE code does this work which is deeply wrong.
286 * MMIO leaves it to the controller driver,
287 * PIO will migrate this way over time.
288 */
289
290int ide_hwif_request_regions(ide_hwif_t *hwif)
291{
292 unsigned long addr;
293 unsigned int i;
294
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100295 if (hwif->mmio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
298 if (addr && !hwif_request_region(hwif, addr, 1))
299 goto control_region_busy;
300 hwif->straight8 = 0;
301 addr = hwif->io_ports[IDE_DATA_OFFSET];
302 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
303 if (!hwif_request_region(hwif, addr, 8))
304 goto data_region_busy;
305 hwif->straight8 = 1;
306 return 0;
307 }
308 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
309 addr = hwif->io_ports[i];
310 if (!hwif_request_region(hwif, addr, 1)) {
311 while (--i)
312 release_region(addr, 1);
313 goto data_region_busy;
314 }
315 }
316 return 0;
317
318data_region_busy:
319 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
320 if (addr)
321 release_region(addr, 1);
322control_region_busy:
323 /* If any errors are return, we drop the hwif interface. */
324 return -EBUSY;
325}
326
327/**
328 * ide_hwif_release_regions - free IDE resources
329 *
330 * Note that we only release the standard ports,
331 * and do not even try to handle any extra ports
332 * allocated for weird IDE interface chipsets.
333 *
334 * Note also that we don't yet handle mmio resources here. More
335 * importantly our caller should be doing this so we need to
336 * restructure this as a helper function for drivers.
337 */
338
339void ide_hwif_release_regions(ide_hwif_t *hwif)
340{
341 u32 i = 0;
342
Bartlomiej Zolnierkiewicz2ad1e552007-02-17 02:40:25 +0100343 if (hwif->mmio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 return;
345 if (hwif->io_ports[IDE_CONTROL_OFFSET])
346 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
347 if (hwif->straight8) {
348 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
349 return;
350 }
351 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
352 if (hwif->io_ports[i])
353 release_region(hwif->io_ports[i], 1);
354}
355
356/**
357 * ide_hwif_restore - restore hwif to template
358 * @hwif: hwif to update
359 * @tmp_hwif: template
360 *
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700361 * Restore hwif to a previous state by copying most settings
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 * from the template.
363 */
364
365static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
366{
367 hwif->hwgroup = tmp_hwif->hwgroup;
368
369 hwif->gendev.parent = tmp_hwif->gendev.parent;
370
371 hwif->proc = tmp_hwif->proc;
372
373 hwif->major = tmp_hwif->major;
374 hwif->straight8 = tmp_hwif->straight8;
375 hwif->bus_state = tmp_hwif->bus_state;
376
Bartlomiej Zolnierkiewicz6a824c92007-07-20 01:11:58 +0200377 hwif->host_flags = tmp_hwif->host_flags;
378
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200379 hwif->pio_mask = tmp_hwif->pio_mask;
380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 hwif->ultra_mask = tmp_hwif->ultra_mask;
382 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
383 hwif->swdma_mask = tmp_hwif->swdma_mask;
384
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200385 hwif->cbl = tmp_hwif->cbl;
386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 hwif->chipset = tmp_hwif->chipset;
388 hwif->hold = tmp_hwif->hold;
389
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100390 hwif->dev = tmp_hwif->dev;
391
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392#ifdef CONFIG_BLK_DEV_IDEPCI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 hwif->cds = tmp_hwif->cds;
394#endif
395
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200396 hwif->set_pio_mode = tmp_hwif->set_pio_mode;
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200397 hwif->set_dma_mode = tmp_hwif->set_dma_mode;
Sergei Shtylyovb4e44362007-10-11 23:53:58 +0200398 hwif->mdma_filter = tmp_hwif->mdma_filter;
Bartlomiej Zolnierkiewicz2d5eaa62007-05-10 00:01:08 +0200399 hwif->udma_filter = tmp_hwif->udma_filter;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 hwif->selectproc = tmp_hwif->selectproc;
401 hwif->reset_poll = tmp_hwif->reset_poll;
402 hwif->pre_reset = tmp_hwif->pre_reset;
403 hwif->resetproc = tmp_hwif->resetproc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 hwif->maskproc = tmp_hwif->maskproc;
405 hwif->quirkproc = tmp_hwif->quirkproc;
406 hwif->busproc = tmp_hwif->busproc;
407
408 hwif->ata_input_data = tmp_hwif->ata_input_data;
409 hwif->ata_output_data = tmp_hwif->ata_output_data;
410 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
411 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
412
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100413 hwif->dma_host_set = tmp_hwif->dma_host_set;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 hwif->dma_setup = tmp_hwif->dma_setup;
415 hwif->dma_exec_cmd = tmp_hwif->dma_exec_cmd;
416 hwif->dma_start = tmp_hwif->dma_start;
417 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
Albert Leef0dd8712007-02-17 02:40:21 +0100419 hwif->ide_dma_clear_irq = tmp_hwif->ide_dma_clear_irq;
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200420 hwif->dma_lost_irq = tmp_hwif->dma_lost_irq;
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200421 hwif->dma_timeout = tmp_hwif->dma_timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 hwif->OUTB = tmp_hwif->OUTB;
424 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
425 hwif->OUTW = tmp_hwif->OUTW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 hwif->OUTSW = tmp_hwif->OUTSW;
427 hwif->OUTSL = tmp_hwif->OUTSL;
428
429 hwif->INB = tmp_hwif->INB;
430 hwif->INW = tmp_hwif->INW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 hwif->INSW = tmp_hwif->INSW;
432 hwif->INSL = tmp_hwif->INSL;
433
434 hwif->sg_max_nents = tmp_hwif->sg_max_nents;
435
436 hwif->mmio = tmp_hwif->mmio;
437 hwif->rqsize = tmp_hwif->rqsize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438
439#ifndef CONFIG_BLK_DEV_IDECS
440 hwif->irq = tmp_hwif->irq;
441#endif
442
443 hwif->dma_base = tmp_hwif->dma_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 hwif->dma_command = tmp_hwif->dma_command;
445 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
446 hwif->dma_status = tmp_hwif->dma_status;
447 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
448 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
449
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 hwif->config_data = tmp_hwif->config_data;
451 hwif->select_data = tmp_hwif->select_data;
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700452 hwif->extra_base = tmp_hwif->extra_base;
453 hwif->extra_ports = tmp_hwif->extra_ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454
455 hwif->hwif_data = tmp_hwif->hwif_data;
456}
457
Bartlomiej Zolnierkiewiczfbd13082008-02-01 23:09:36 +0100458void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
Bartlomiej Zolnierkiewicz96e5ad32008-02-01 23:09:35 +0100459{
460 ide_hwgroup_t *hwgroup = hwif->hwgroup;
461
462 spin_lock_irq(&ide_lock);
463 /*
464 * Remove us from the hwgroup, and free
465 * the hwgroup if we were the only member
466 */
467 if (hwif->next == hwif) {
468 BUG_ON(hwgroup->hwif != hwif);
469 kfree(hwgroup);
470 } else {
471 /* There is another interface in hwgroup.
472 * Unlink us, and set hwgroup->drive and ->hwif to
473 * something sane.
474 */
475 ide_hwif_t *g = hwgroup->hwif;
476
477 while (g->next != hwif)
478 g = g->next;
479 g->next = hwif->next;
480 if (hwgroup->hwif == hwif) {
481 /* Chose a random hwif for hwgroup->hwif.
482 * It's guaranteed that there are no drives
483 * left in the hwgroup.
484 */
485 BUG_ON(hwgroup->drive != NULL);
486 hwgroup->hwif = g;
487 }
488 BUG_ON(hwgroup->hwif == hwif);
489 }
490 spin_unlock_irq(&ide_lock);
491}
492
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493/**
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700494 * ide_unregister - free an IDE interface
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 * @index: index of interface (will change soon to a pointer)
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +0100496 * @init_default: init default hwif flag
497 * @restore: restore hwif flag
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 *
499 * Perform the final unregister of an IDE interface. At the moment
500 * we don't refcount interfaces so this will also get split up.
501 *
502 * Locking:
503 * The caller must not hold the IDE locks
504 * The drive present/vanishing is not yet properly locked
505 * Take care with the callbacks. These have been split to avoid
506 * deadlocking the IDE layer. The shutdown callback is called
507 * before we take the lock and free resources. It is up to the
508 * caller to be sure there is no pending I/O here, and that
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700509 * the interface will not be reopened (present/vanishing locking
510 * isn't yet done BTW). After we commit to the final kill we
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 * call the cleanup callback with the ide locks held.
512 *
513 * Unregister restores the hwif structures to the default state.
514 * This is raving bonkers.
515 */
516
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +0100517void ide_unregister(unsigned int index, int init_default, int restore)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518{
519 ide_drive_t *drive;
520 ide_hwif_t *hwif, *g;
Matthias Kaehlckeef298882007-07-09 23:17:55 +0200521 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 ide_hwgroup_t *hwgroup;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200523 int irq_count = 0, unit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525 BUG_ON(index >= MAX_HWIFS);
526
527 BUG_ON(in_interrupt());
528 BUG_ON(irqs_disabled());
Matthias Kaehlckeef298882007-07-09 23:17:55 +0200529 mutex_lock(&ide_cfg_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 spin_lock_irq(&ide_lock);
531 hwif = &ide_hwifs[index];
532 if (!hwif->present)
533 goto abort;
534 for (unit = 0; unit < MAX_DRIVES; ++unit) {
535 drive = &hwif->drives[unit];
Greg Kroah-Hartman94f6c592005-06-20 21:15:16 -0700536 if (!drive->present)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 continue;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200538 spin_unlock_irq(&ide_lock);
539 device_unregister(&drive->gendev);
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800540 wait_for_completion(&drive->gendev_rel_comp);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200541 spin_lock_irq(&ide_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 }
543 hwif->present = 0;
544
545 spin_unlock_irq(&ide_lock);
546
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200547 ide_proc_unregister_port(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548
549 hwgroup = hwif->hwgroup;
550 /*
551 * free the irq if we were the only hwif using it
552 */
553 g = hwgroup->hwif;
554 do {
555 if (g->irq == hwif->irq)
556 ++irq_count;
557 g = g->next;
558 } while (g != hwgroup->hwif);
559 if (irq_count == 1)
560 free_irq(hwif->irq, hwgroup);
561
Bartlomiej Zolnierkiewicz96e5ad32008-02-01 23:09:35 +0100562 ide_remove_port_from_hwgroup(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 device_unregister(&hwif->gendev);
Aleksey Makarovf36d4022006-01-09 15:59:27 -0800565 wait_for_completion(&hwif->gendev_rel_comp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566
567 /*
568 * Remove us from the kernel's knowledge
569 */
570 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
571 kfree(hwif->sg_table);
572 unregister_blkdev(hwif->major, hwif->name);
573 spin_lock_irq(&ide_lock);
574
575 if (hwif->dma_base) {
576 (void) ide_release_dma(hwif);
577
578 hwif->dma_base = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 hwif->dma_command = 0;
580 hwif->dma_vendor1 = 0;
581 hwif->dma_status = 0;
582 hwif->dma_vendor3 = 0;
583 hwif->dma_prdtable = 0;
Sergei Shtylylov020e3222006-10-03 01:14:13 -0700584
585 hwif->extra_base = 0;
586 hwif->extra_ports = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 }
588
Bartlomiej Zolnierkiewicz7cba97f2008-02-01 23:09:35 +0100589 ide_hwif_release_regions(hwif);
590
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 /* copy original settings */
592 tmp_hwif = *hwif;
593
594 /* restore hwif data to pristine status */
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100595 ide_init_port_data(hwif, index);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +0100597 if (init_default)
598 init_hwif_default(hwif, index);
599
600 if (restore)
601 ide_hwif_restore(hwif, &tmp_hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602
603abort:
604 spin_unlock_irq(&ide_lock);
Matthias Kaehlckeef298882007-07-09 23:17:55 +0200605 mutex_unlock(&ide_cfg_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606}
607
608EXPORT_SYMBOL(ide_unregister);
609
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100610void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
611{
612 memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
613 hwif->irq = hw->irq;
614 hwif->noprobe = 0;
615 hwif->chipset = hw->chipset;
616 hwif->gendev.parent = hw->dev;
617 hwif->ack_intr = hw->ack_intr;
618}
619EXPORT_SYMBOL_GPL(ide_init_port_hw);
620
Bartlomiej Zolnierkiewicz9e016a72008-02-02 19:56:39 +0100621ide_hwif_t *ide_deprecated_find_port(unsigned long base)
622{
623 ide_hwif_t *hwif;
624 int i;
625
626 for (i = 0; i < MAX_HWIFS; i++) {
627 hwif = &ide_hwifs[i];
628 if (hwif->io_ports[IDE_DATA_OFFSET] == base)
629 goto found;
630 }
631
632 for (i = 0; i < MAX_HWIFS; i++) {
633 hwif = &ide_hwifs[i];
634 if (hwif->hold)
635 continue;
636 if (!hwif->present && hwif->mate == NULL)
637 goto found;
638 }
639
640 hwif = NULL;
641found:
642 return hwif;
643}
644EXPORT_SYMBOL_GPL(ide_deprecated_find_port);
645
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646/**
Bartlomiej Zolnierkiewiczfd9bb532007-10-20 00:32:31 +0200647 * ide_register_hw - register IDE interface
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 * @hw: hardware registers
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100649 * @quirkproc: quirkproc function
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 * @hwifp: pointer to returned hwif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 *
652 * Register an IDE interface, specifying exactly the registers etc.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 *
654 * Returns -1 on error.
655 */
656
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100657int ide_register_hw(hw_regs_t *hw, void (*quirkproc)(ide_drive_t *),
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100658 ide_hwif_t **hwifp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659{
660 int index, retry = 1;
661 ide_hwif_t *hwif;
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100662 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
Bartlomiej Zolnierkiewicz795d74b2008-01-26 20:13:03 +0100663
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 do {
Bartlomiej Zolnierkiewicz9e016a72008-02-02 19:56:39 +0100665 hwif = ide_deprecated_find_port(hw->io_ports[IDE_DATA_OFFSET]);
Bartlomiej Zolnierkiewicz9e016a72008-02-02 19:56:39 +0100666 if (hwif)
667 goto found;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 for (index = 0; index < MAX_HWIFS; index++)
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +0100669 ide_unregister(index, 1, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 } while (retry--);
671 return -1;
672found:
Peter Teoh0c6025d2008-03-07 21:53:49 +0100673 index = hwif->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 if (hwif->present)
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +0100675 ide_unregister(index, 0, 1);
Bartlomiej Zolnierkiewiczead741d2008-02-02 19:56:38 +0100676 else if (!hwif->hold)
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100677 ide_init_port_data(hwif, index);
Bartlomiej Zolnierkiewicz57c802e2008-01-26 20:13:05 +0100678
679 ide_init_port_hw(hwif, hw);
Bartlomiej Zolnierkiewiczf01393e2008-01-26 20:13:03 +0100680 hwif->quirkproc = quirkproc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100682 idx[0] = index;
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200683
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100684 ide_device_add(idx, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685
686 if (hwifp)
687 *hwifp = hwif;
688
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +0100689 return hwif->present ? index : -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690}
691
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692EXPORT_SYMBOL(ide_register_hw);
693
694/*
695 * Locks for IDE setting functionality
696 */
697
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200698DEFINE_MUTEX(ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200700EXPORT_SYMBOL_GPL(ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200701
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 * ide_spin_wait_hwgroup - wait for group
704 * @drive: drive in the group
705 *
706 * Wait for an IDE device group to go non busy and then return
707 * holding the ide_lock which guards the hwgroup->busy status
708 * and right to use it.
709 */
710
711int ide_spin_wait_hwgroup (ide_drive_t *drive)
712{
713 ide_hwgroup_t *hwgroup = HWGROUP(drive);
714 unsigned long timeout = jiffies + (3 * HZ);
715
716 spin_lock_irq(&ide_lock);
717
718 while (hwgroup->busy) {
719 unsigned long lflags;
720 spin_unlock_irq(&ide_lock);
721 local_irq_set(lflags);
722 if (time_after(jiffies, timeout)) {
723 local_irq_restore(lflags);
724 printk(KERN_ERR "%s: channel busy\n", drive->name);
725 return -EBUSY;
726 }
727 local_irq_restore(lflags);
728 spin_lock_irq(&ide_lock);
729 }
730 return 0;
731}
732
733EXPORT_SYMBOL(ide_spin_wait_hwgroup);
734
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200735int set_io_32bit(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200737 if (drive->no_io_32bit)
738 return -EPERM;
739
740 if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
741 return -EINVAL;
742
Bartlomiej Zolnierkiewicz644a9d72007-12-12 23:32:00 +0100743 if (ide_spin_wait_hwgroup(drive))
744 return -EBUSY;
745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 drive->io_32bit = arg;
Bartlomiej Zolnierkiewicz644a9d72007-12-12 23:32:00 +0100747
748 spin_unlock_irq(&ide_lock);
749
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 return 0;
751}
752
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200753static int set_ksettings(ide_drive_t *drive, int arg)
754{
755 if (arg < 0 || arg > 1)
756 return -EINVAL;
757
758 if (ide_spin_wait_hwgroup(drive))
759 return -EBUSY;
760 drive->keep_settings = arg;
761 spin_unlock_irq(&ide_lock);
762
763 return 0;
764}
765
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200766int set_using_dma(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767{
768#ifdef CONFIG_BLK_DEV_IDEDMA
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200769 ide_hwif_t *hwif = drive->hwif;
770 int err = -EPERM;
771
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200772 if (arg < 0 || arg > 1)
773 return -EINVAL;
774
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 if (!drive->id || !(drive->id->capability & 1))
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200776 goto out;
777
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100778 if (hwif->dma_host_set == NULL)
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200779 goto out;
780
781 err = -EBUSY;
782 if (ide_spin_wait_hwgroup(drive))
783 goto out;
784 /*
785 * set ->busy flag, unlock and let it ride
786 */
787 hwif->hwgroup->busy = 1;
788 spin_unlock_irq(&ide_lock);
789
790 err = 0;
791
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 if (arg) {
Bartlomiej Zolnierkiewicz23b1bd42008-01-25 22:17:19 +0100793 if (ide_set_dma(drive))
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200794 err = -EIO;
Bartlomiej Zolnierkiewicz7469aaf2007-02-17 02:40:26 +0100795 } else
796 ide_dma_off(drive);
Bartlomiej Zolnierkiewicz87996202007-03-26 23:03:19 +0200797
798 /*
799 * lock, clear ->busy flag and unlock before leaving
800 */
801 spin_lock_irq(&ide_lock);
802 hwif->hwgroup->busy = 0;
803 spin_unlock_irq(&ide_lock);
804out:
805 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806#else
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200807 if (arg < 0 || arg > 1)
808 return -EINVAL;
809
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 return -EPERM;
811#endif
812}
813
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200814int set_pio_mode(ide_drive_t *drive, int arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815{
816 struct request rq;
817
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200818 if (arg < 0 || arg > 255)
819 return -EINVAL;
820
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200821 if (drive->hwif->set_pio_mode == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 return -ENOSYS;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200823
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 if (drive->special.b.set_tune)
825 return -EBUSY;
Bartlomiej Zolnierkiewicz145b75e2008-01-26 20:13:11 +0100826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 ide_init_drive_cmd(&rq);
Bartlomiej Zolnierkiewicz852738f2008-01-26 20:13:12 +0100828 rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
Bartlomiej Zolnierkiewicz145b75e2008-01-26 20:13:11 +0100829
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830 drive->tune_req = (u8) arg;
831 drive->special.b.set_tune = 1;
832 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
833 return 0;
834}
835
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200836static int set_unmaskirq(ide_drive_t *drive, int arg)
837{
838 if (drive->no_unmask)
839 return -EPERM;
840
841 if (arg < 0 || arg > 1)
842 return -EINVAL;
843
844 if (ide_spin_wait_hwgroup(drive))
845 return -EBUSY;
846 drive->unmask = arg;
847 spin_unlock_irq(&ide_lock);
848
849 return 0;
850}
851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852/**
853 * system_bus_clock - clock guess
854 *
855 * External version of the bus clock guess used by very old IDE drivers
856 * for things like VLB timings. Should not be used.
857 */
858
859int system_bus_clock (void)
860{
Bartlomiej Zolnierkiewicz537f06c2008-02-01 23:09:35 +0100861 return system_bus_speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862}
863
864EXPORT_SYMBOL(system_bus_clock);
865
David Brownellb887d2e2006-08-14 23:11:05 -0700866static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867{
868 ide_drive_t *drive = dev->driver_data;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100869 ide_hwif_t *hwif = HWIF(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 struct request rq;
871 struct request_pm_state rqpm;
872 ide_task_t args;
Shaohua Li5e321322007-10-11 23:53:58 +0200873 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100875 /* Call ACPI _GTM only once */
876 if (!(drive->dn % 2))
877 ide_acpi_get_timing(hwif);
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 memset(&rq, 0, sizeof(rq));
880 memset(&rqpm, 0, sizeof(rqpm));
881 memset(&args, 0, sizeof(args));
Jens Axboe4aff5e22006-08-10 08:44:47 +0200882 rq.cmd_type = REQ_TYPE_PM_SUSPEND;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 rq.special = &args;
Jens Axboec00895a2006-09-30 20:29:12 +0200884 rq.data = &rqpm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885 rqpm.pm_step = ide_pm_state_start_suspend;
David Brownellb887d2e2006-08-14 23:11:05 -0700886 if (mesg.event == PM_EVENT_PRETHAW)
887 mesg.event = PM_EVENT_FREEZE;
888 rqpm.pm_state = mesg.event;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
Shaohua Li5e321322007-10-11 23:53:58 +0200890 ret = ide_do_drive_cmd(drive, &rq, ide_wait);
891 /* only call ACPI _PS3 after both drivers are suspended */
892 if (!ret && (((drive->dn % 2) && hwif->drives[0].present
893 && hwif->drives[1].present)
894 || !hwif->drives[0].present
895 || !hwif->drives[1].present))
896 ide_acpi_set_state(hwif, 0);
897 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898}
899
900static int generic_ide_resume(struct device *dev)
901{
902 ide_drive_t *drive = dev->driver_data;
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100903 ide_hwif_t *hwif = HWIF(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 struct request rq;
905 struct request_pm_state rqpm;
906 ide_task_t args;
Lee Trager0d2157f2007-06-08 15:14:30 +0200907 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100909 /* Call ACPI _STM only once */
Shaohua Li5e321322007-10-11 23:53:58 +0200910 if (!(drive->dn % 2)) {
911 ide_acpi_set_state(hwif, 1);
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100912 ide_acpi_push_timing(hwif);
Shaohua Li5e321322007-10-11 23:53:58 +0200913 }
Hannes Reineckee3a59b42007-02-07 18:19:37 +0100914
915 ide_acpi_exec_tfs(drive);
916
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 memset(&rq, 0, sizeof(rq));
918 memset(&rqpm, 0, sizeof(rqpm));
919 memset(&args, 0, sizeof(args));
Jens Axboe4aff5e22006-08-10 08:44:47 +0200920 rq.cmd_type = REQ_TYPE_PM_RESUME;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 rq.special = &args;
Jens Axboec00895a2006-09-30 20:29:12 +0200922 rq.data = &rqpm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 rqpm.pm_step = ide_pm_state_start_resume;
Pavel Machekca078ba2005-09-03 15:56:57 -0700924 rqpm.pm_state = PM_EVENT_ON;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
Lee Trager0d2157f2007-06-08 15:14:30 +0200926 err = ide_do_drive_cmd(drive, &rq, ide_head_wait);
927
Rafael J. Wysockice9b2b02007-06-16 02:24:43 +0200928 if (err == 0 && dev->driver) {
929 ide_driver_t *drv = to_ide_driver(dev->driver);
930
931 if (drv->resume)
932 drv->resume(drive);
933 }
Lee Trager0d2157f2007-06-08 15:14:30 +0200934
935 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936}
937
938int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
939 unsigned int cmd, unsigned long arg)
940{
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200941 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942 ide_driver_t *drv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 void __user *p = (void __user *)arg;
Linus Torvalds19850262007-07-17 15:57:42 -0700944 int err = 0, (*setfunc)(ide_drive_t *, int);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200945 u8 *val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +0200947 switch (cmd) {
948 case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val;
949 case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val;
950 case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val;
951 case HDIO_GET_DMA: val = &drive->using_dma; goto read_val;
952 case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val;
953 case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val;
954 case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val;
955 case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val;
956 case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958
959 switch (cmd) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 case HDIO_OBSOLETE_IDENTITY:
961 case HDIO_GET_IDENTITY:
962 if (bdev != bdev->bd_contains)
963 return -EINVAL;
964 if (drive->id_read == 0)
965 return -ENOMSG;
966 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
967 return -EFAULT;
968 return 0;
969
970 case HDIO_GET_NICE:
971 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
972 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
Bartlomiej Zolnierkiewicz92b83c82008-02-02 19:56:45 +0100973 drive->nice1 << IDE_NICE_1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 (long __user *) arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975#ifdef CONFIG_IDE_TASK_IOCTL
976 case HDIO_DRIVE_TASKFILE:
977 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
978 return -EACCES;
979 switch(drive->media) {
980 case ide_disk:
981 return ide_taskfile_ioctl(drive, cmd, arg);
982 default:
983 return -ENOMSG;
984 }
985#endif /* CONFIG_IDE_TASK_IOCTL */
986
987 case HDIO_DRIVE_CMD:
988 if (!capable(CAP_SYS_RAWIO))
989 return -EACCES;
990 return ide_cmd_ioctl(drive, cmd, arg);
991
992 case HDIO_DRIVE_TASK:
993 if (!capable(CAP_SYS_RAWIO))
994 return -EACCES;
995 return ide_task_ioctl(drive, cmd, arg);
996
997 case HDIO_SCAN_HWIF:
998 {
999 hw_regs_t hw;
1000 int args[3];
1001 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1002 if (copy_from_user(args, p, 3 * sizeof(int)))
1003 return -EFAULT;
1004 memset(&hw, 0, sizeof(hw));
1005 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1006 (unsigned long) args[1], NULL);
1007 hw.irq = args[2];
Bartlomiej Zolnierkiewiczcbb010c2008-01-26 20:13:06 +01001008 if (ide_register_hw(&hw, NULL, NULL) == -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 return -EIO;
1010 return 0;
1011 }
1012 case HDIO_UNREGISTER_HWIF:
1013 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1014 /* (arg > MAX_HWIFS) checked in function */
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +01001015 ide_unregister(arg, 1, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016 return 0;
1017 case HDIO_SET_NICE:
1018 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1019 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1020 return -EPERM;
1021 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1022 drv = *(ide_driver_t **)bdev->bd_disk->private_data;
1023 if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
1024 drive->dsc_overlap = 0;
1025 return -EPERM;
1026 }
1027 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1028 return 0;
1029 case HDIO_DRIVE_RESET:
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +01001030 if (!capable(CAP_SYS_ADMIN))
1031 return -EACCES;
1032
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 /*
1034 * Abort the current command on the
1035 * group if there is one, taking
1036 * care not to allow anything else
1037 * to be queued and to die on the
1038 * spot if we miss one somehow
1039 */
1040
1041 spin_lock_irqsave(&ide_lock, flags);
1042
Alan Cox913759a2006-10-03 01:14:33 -07001043 if (HWGROUP(drive)->resetting) {
1044 spin_unlock_irqrestore(&ide_lock, flags);
1045 return -EBUSY;
1046 }
1047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 ide_abort(drive, "drive reset");
1049
Eric Sesterhenn125e1872006-06-23 02:06:06 -07001050 BUG_ON(HWGROUP(drive)->handler);
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +01001051
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 /* Ensure nothing gets queued after we
1053 drop the lock. Reset will clear the busy */
Bartlomiej Zolnierkiewiczdbecebc2008-02-26 21:50:35 +01001054
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 HWGROUP(drive)->busy = 1;
1056 spin_unlock_irqrestore(&ide_lock, flags);
1057 (void) ide_do_reset(drive);
1058
1059 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 case HDIO_GET_BUSSTATE:
1061 if (!capable(CAP_SYS_ADMIN))
1062 return -EACCES;
1063 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1064 return -EFAULT;
1065 return 0;
1066
1067 case HDIO_SET_BUSSTATE:
1068 if (!capable(CAP_SYS_ADMIN))
1069 return -EACCES;
1070 if (HWIF(drive)->busproc)
1071 return HWIF(drive)->busproc(drive, (int)arg);
1072 return -EOPNOTSUPP;
1073 default:
1074 return -EINVAL;
1075 }
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +02001076
1077read_val:
Matthias Kaehlckef9383c42007-07-09 23:17:56 +02001078 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +02001079 spin_lock_irqsave(&ide_lock, flags);
1080 err = *val;
1081 spin_unlock_irqrestore(&ide_lock, flags);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +02001082 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +02001083 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1084
1085set_val:
1086 if (bdev != bdev->bd_contains)
1087 err = -EINVAL;
1088 else {
1089 if (!capable(CAP_SYS_ADMIN))
1090 err = -EACCES;
1091 else {
Matthias Kaehlckef9383c42007-07-09 23:17:56 +02001092 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +02001093 err = setfunc(drive, arg);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +02001094 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz14979432007-05-10 00:01:10 +02001095 }
1096 }
1097 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098}
1099
1100EXPORT_SYMBOL(generic_ide_ioctl);
1101
1102/*
1103 * stridx() returns the offset of c within s,
1104 * or -1 if c is '\0' or not found within s.
1105 */
1106static int __init stridx (const char *s, char c)
1107{
1108 char *i = strchr(s, c);
1109 return (i && c) ? i - s : -1;
1110}
1111
1112/*
1113 * match_parm() does parsing for ide_setup():
1114 *
1115 * 1. the first char of s must be '='.
1116 * 2. if the remainder matches one of the supplied keywords,
1117 * the index (1 based) of the keyword is negated and returned.
1118 * 3. if the remainder is a series of no more than max_vals numbers
1119 * separated by commas, the numbers are saved in vals[] and a
1120 * count of how many were saved is returned. Base10 is assumed,
1121 * and base16 is allowed when prefixed with "0x".
1122 * 4. otherwise, zero is returned.
1123 */
1124static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1125{
1126 static const char *decimal = "0123456789";
1127 static const char *hex = "0123456789abcdef";
1128 int i, n;
1129
1130 if (*s++ == '=') {
1131 /*
1132 * Try matching against the supplied keywords,
1133 * and return -(index+1) if we match one
1134 */
1135 if (keywords != NULL) {
1136 for (i = 0; *keywords != NULL; ++i) {
1137 if (!strcmp(s, *keywords++))
1138 return -(i+1);
1139 }
1140 }
1141 /*
1142 * Look for a series of no more than "max_vals"
1143 * numeric values separated by commas, in base10,
1144 * or base16 when prefixed with "0x".
1145 * Return a count of how many were found.
1146 */
1147 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1148 vals[n] = i;
1149 while ((i = stridx(decimal, *++s)) >= 0)
1150 vals[n] = (vals[n] * 10) + i;
1151 if (*s == 'x' && !vals[n]) {
1152 while ((i = stridx(hex, *++s)) >= 0)
1153 vals[n] = (vals[n] * 0x10) + i;
1154 }
1155 if (++n == max_vals)
1156 break;
1157 if (*s == ',' || *s == ';')
1158 ++s;
1159 }
1160 if (!*s)
1161 return n;
1162 }
1163 return 0; /* zero = nothing matched */
1164}
1165
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001166extern int probe_ali14xx;
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001167extern int probe_umc8672;
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001168extern int probe_dtc2278;
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001169extern int probe_ht6560b;
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +01001170extern int probe_qd65xx;
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +01001171extern int cmd640_vlb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172
1173static int __initdata is_chipset_set[MAX_HWIFS];
1174
1175/*
1176 * ide_setup() gets called VERY EARLY during initialization,
1177 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1178 *
Randy Dunlap1c10e932008-03-07 21:53:50 +01001179 * Remember to update Documentation/ide/ide.txt if you change something here.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001180 */
1181static int __init ide_setup(char *s)
1182{
1183 int i, vals[3];
1184 ide_hwif_t *hwif;
1185 ide_drive_t *drive;
1186 unsigned int hw, unit;
1187 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1188 const char max_hwif = '0' + (MAX_HWIFS - 1);
1189
1190
1191 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1192 return 0; /* driver and not us */
1193
1194 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1195 return 0;
1196
1197 printk(KERN_INFO "ide_setup: %s", s);
1198 init_ide_data ();
1199
1200#ifdef CONFIG_BLK_DEV_IDEDOUBLER
1201 if (!strcmp(s, "ide=doubler")) {
1202 extern int ide_doubler;
1203
1204 printk(" : Enabled support for IDE doublers\n");
1205 ide_doubler = 1;
1206 return 1;
1207 }
1208#endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1209
1210 if (!strcmp(s, "ide=nodma")) {
1211 printk(" : Prevented DMA\n");
1212 noautodma = 1;
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +02001213 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 }
1215
Hannes Reineckee3a59b42007-02-07 18:19:37 +01001216#ifdef CONFIG_BLK_DEV_IDEACPI
1217 if (!strcmp(s, "ide=noacpi")) {
1218 //printk(" : Disable IDE ACPI support.\n");
1219 ide_noacpi = 1;
1220 return 1;
1221 }
1222 if (!strcmp(s, "ide=acpigtf")) {
1223 //printk(" : Enable IDE ACPI _GTF support.\n");
1224 ide_noacpitfs = 0;
1225 return 1;
1226 }
1227 if (!strcmp(s, "ide=acpionboot")) {
1228 //printk(" : Call IDE ACPI methods on boot.\n");
1229 ide_noacpionboot = 0;
1230 return 1;
1231 }
1232#endif /* CONFIG_BLK_DEV_IDEACPI */
1233
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 /*
1235 * Look for drive options: "hdx="
1236 */
1237 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1238 const char *hd_words[] = {
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +02001239 "none", "noprobe", "nowerr", "cdrom", "nodma",
Bartlomiej Zolnierkiewicz9e47be02008-01-26 20:13:09 +01001240 "autotune", "noautotune", "-8", "-9", "-10",
Jens Axboe36193482006-07-28 08:54:59 +02001241 "noflush", "remap", "remap63", "scsi", NULL };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242 unit = s[2] - 'a';
1243 hw = unit / MAX_DRIVES;
1244 unit = unit % MAX_DRIVES;
1245 hwif = &ide_hwifs[hw];
1246 drive = &hwif->drives[unit];
1247 if (strncmp(s + 4, "ide-", 4) == 0) {
1248 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
Bartlomiej Zolnierkiewicz15220d92008-03-22 16:40:21 +01001249 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250 }
1251 switch (match_parm(&s[3], hd_words, vals, 3)) {
1252 case -1: /* "none" */
1253 case -2: /* "noprobe" */
1254 drive->noprobe = 1;
1255 goto done;
1256 case -3: /* "nowerr" */
1257 drive->bad_wstat = BAD_R_STAT;
1258 hwif->noprobe = 0;
1259 goto done;
1260 case -4: /* "cdrom" */
1261 drive->present = 1;
1262 drive->media = ide_cdrom;
1263 /* an ATAPI device ignores DRDY */
1264 drive->ready_stat = 0;
1265 hwif->noprobe = 0;
1266 goto done;
Bartlomiej Zolnierkiewiczc2237012007-10-16 22:29:58 +02001267 case -5: /* nodma */
1268 drive->nodma = 1;
1269 goto done;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 case -6: /* "autotune" */
1271 drive->autotune = IDE_TUNE_AUTO;
1272 goto obsolete_option;
1273 case -7: /* "noautotune" */
1274 drive->autotune = IDE_TUNE_NOAUTO;
1275 goto obsolete_option;
Jens Axboe36193482006-07-28 08:54:59 +02001276 case -11: /* noflush */
1277 drive->noflush = 1;
1278 goto done;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 case -12: /* "remap" */
1280 drive->remap_0_to_1 = 1;
Bartlomiej Zolnierkiewiczd708c402008-03-22 16:40:22 +01001281 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282 case -13: /* "remap63" */
1283 drive->sect0 = 63;
Bartlomiej Zolnierkiewiczd708c402008-03-22 16:40:22 +01001284 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 case -14: /* "scsi" */
1286 drive->scsi = 1;
Bartlomiej Zolnierkiewicz15220d92008-03-22 16:40:21 +01001287 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 case 3: /* cyl,head,sect */
1289 drive->media = ide_disk;
1290 drive->ready_stat = READY_STAT;
1291 drive->cyl = drive->bios_cyl = vals[0];
1292 drive->head = drive->bios_head = vals[1];
1293 drive->sect = drive->bios_sect = vals[2];
1294 drive->present = 1;
1295 drive->forced_geom = 1;
1296 hwif->noprobe = 0;
1297 goto done;
1298 default:
1299 goto bad_option;
1300 }
1301 }
1302
1303 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1304 goto bad_option;
1305 /*
1306 * Look for bus speed option: "idebus="
1307 */
1308 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1309 if (match_parm(&s[6], NULL, vals, 1) != 1)
1310 goto bad_option;
1311 if (vals[0] >= 20 && vals[0] <= 66) {
1312 idebus_parameter = vals[0];
1313 } else
1314 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1315 goto done;
1316 }
1317 /*
1318 * Look for interface options: "idex="
1319 */
1320 if (s[3] >= '0' && s[3] <= max_hwif) {
1321 /*
1322 * Be VERY CAREFUL changing this: note hardcoded indexes below
1323 * (-8, -9, -10) are reserved to ease the hardcoding.
1324 */
1325 static const char *ide_words[] = {
Bartlomiej Zolnierkiewiczb6209a92007-03-03 17:48:55 +01001326 "noprobe", "serialize", "minus3", "minus4",
Bartlomiej Zolnierkiewicz1b516942007-10-16 22:29:57 +02001327 "reset", "minus6", "ata66", "minus8", "minus9",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1329 "dtc2278", "umc8672", "ali14xx", NULL };
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +02001330
1331 hw_regs_t hwregs;
1332
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 hw = s[3] - '0';
1334 hwif = &ide_hwifs[hw];
1335 i = match_parm(&s[4], ide_words, vals, 3);
1336
1337 /*
1338 * Cryptic check to ensure chipset not already set for hwif.
1339 * Note: we can't depend on hwif->chipset here.
1340 */
1341 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1342 /* chipset already specified */
1343 if (is_chipset_set[hw])
1344 goto bad_option;
1345 if (i > -18 && i <= -11) {
1346 /* these drivers are for "ide0=" only */
1347 if (hw != 0)
1348 goto bad_hwif;
1349 /* chipset already specified for 2nd port */
1350 if (is_chipset_set[hw+1])
1351 goto bad_option;
1352 }
1353 is_chipset_set[hw] = 1;
1354 printk("\n");
1355 }
1356
1357 switch (i) {
1358#ifdef CONFIG_BLK_DEV_ALI14XX
1359 case -17: /* "ali14xx" */
1360 probe_ali14xx = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001361 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362#endif
1363#ifdef CONFIG_BLK_DEV_UMC8672
1364 case -16: /* "umc8672" */
1365 probe_umc8672 = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001366 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367#endif
1368#ifdef CONFIG_BLK_DEV_DTC2278
1369 case -15: /* "dtc2278" */
1370 probe_dtc2278 = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001371 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372#endif
1373#ifdef CONFIG_BLK_DEV_CMD640
1374 case -14: /* "cmd640_vlb" */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375 cmd640_vlb = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001376 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377#endif
1378#ifdef CONFIG_BLK_DEV_HT6560B
1379 case -13: /* "ht6560b" */
1380 probe_ht6560b = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001381 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382#endif
1383#ifdef CONFIG_BLK_DEV_QD65XX
1384 case -12: /* "qd65xx" */
1385 probe_qd65xx = 1;
Bartlomiej Zolnierkiewicz9c027c62008-03-22 16:40:21 +01001386 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387#endif
1388#ifdef CONFIG_BLK_DEV_4DRIVES
1389 case -11: /* "four" drives on one set of ports */
1390 {
1391 ide_hwif_t *mate = &ide_hwifs[hw^1];
1392 mate->drives[0].select.all ^= 0x20;
1393 mate->drives[1].select.all ^= 0x20;
1394 hwif->chipset = mate->chipset = ide_4drives;
1395 mate->irq = hwif->irq;
1396 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
Bartlomiej Zolnierkiewiczb6209a92007-03-03 17:48:55 +01001397 hwif->mate = mate;
1398 mate->mate = hwif;
1399 hwif->serialized = mate->serialized = 1;
1400 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401 }
1402#endif /* CONFIG_BLK_DEV_4DRIVES */
1403 case -10: /* minus10 */
1404 case -9: /* minus9 */
1405 case -8: /* minus8 */
Bartlomiej Zolnierkiewicz1b516942007-10-16 22:29:57 +02001406 case -6:
Bartlomiej Zolnierkiewiczb6209a92007-03-03 17:48:55 +01001407 case -4:
1408 case -3:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001409 goto bad_option;
1410 case -7: /* ata66 */
1411#ifdef CONFIG_BLK_DEV_IDEPCI
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +02001412 /*
1413 * Use ATA_CBL_PATA40_SHORT so drive side
1414 * cable detection is also overriden.
1415 */
1416 hwif->cbl = ATA_CBL_PATA40_SHORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001417 goto obsolete_option;
1418#else
1419 goto bad_hwif;
1420#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 case -5: /* "reset" */
1422 hwif->reset = 1;
1423 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424 case -2: /* "serialize" */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 hwif->mate = &ide_hwifs[hw^1];
1426 hwif->mate->mate = hwif;
1427 hwif->serialized = hwif->mate->serialized = 1;
1428 goto obsolete_option;
1429
1430 case -1: /* "noprobe" */
1431 hwif->noprobe = 1;
Bartlomiej Zolnierkiewiczc53ea182008-02-26 21:50:34 +01001432 goto obsolete_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433
1434 case 1: /* base */
1435 vals[1] = vals[0] + 0x206; /* default ctl */
1436 case 2: /* base,ctl */
1437 vals[2] = 0; /* default irq = probe for it */
1438 case 3: /* base,ctl,irq */
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +02001439 memset(&hwregs, 0, sizeof(hwregs));
1440 ide_init_hwif_ports(&hwregs, vals[0], vals[1], &hwif->irq);
1441 memcpy(hwif->io_ports, hwregs.io_ports, sizeof(hwif->io_ports));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 hwif->irq = vals[2];
1443 hwif->noprobe = 0;
1444 hwif->chipset = ide_forced;
1445 goto obsolete_option;
1446
1447 case 0: goto bad_option;
1448 default:
1449 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1450 return 1;
1451 }
1452 }
1453bad_option:
1454 printk(" -- BAD OPTION\n");
1455 return 1;
1456obsolete_option:
1457 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1458 return 1;
1459bad_hwif:
1460 printk("-- NOT SUPPORTED ON ide%d", hw);
1461done:
1462 printk("\n");
1463 return 1;
1464}
1465
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466EXPORT_SYMBOL(ide_lock);
1467
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001468static int ide_bus_match(struct device *dev, struct device_driver *drv)
1469{
1470 return 1;
1471}
1472
Kay Sievers263756e2005-12-12 18:03:44 +01001473static char *media_string(ide_drive_t *drive)
1474{
1475 switch (drive->media) {
1476 case ide_disk:
1477 return "disk";
1478 case ide_cdrom:
1479 return "cdrom";
1480 case ide_tape:
1481 return "tape";
1482 case ide_floppy:
1483 return "floppy";
Danny Kukawkaa7a832d2007-04-10 22:39:14 +02001484 case ide_optical:
1485 return "optical";
Kay Sievers263756e2005-12-12 18:03:44 +01001486 default:
1487 return "UNKNOWN";
1488 }
1489}
1490
1491static ssize_t media_show(struct device *dev, struct device_attribute *attr, char *buf)
1492{
1493 ide_drive_t *drive = to_ide_device(dev);
1494 return sprintf(buf, "%s\n", media_string(drive));
1495}
1496
1497static ssize_t drivename_show(struct device *dev, struct device_attribute *attr, char *buf)
1498{
1499 ide_drive_t *drive = to_ide_device(dev);
1500 return sprintf(buf, "%s\n", drive->name);
1501}
1502
1503static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
1504{
1505 ide_drive_t *drive = to_ide_device(dev);
1506 return sprintf(buf, "ide:m-%s\n", media_string(drive));
1507}
1508
Bartlomiej Zolnierkiewicze11b9032007-12-12 23:31:58 +01001509static ssize_t model_show(struct device *dev, struct device_attribute *attr,
1510 char *buf)
1511{
1512 ide_drive_t *drive = to_ide_device(dev);
1513 return sprintf(buf, "%s\n", drive->id->model);
1514}
1515
1516static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
1517 char *buf)
1518{
1519 ide_drive_t *drive = to_ide_device(dev);
1520 return sprintf(buf, "%s\n", drive->id->fw_rev);
1521}
1522
1523static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
1524 char *buf)
1525{
1526 ide_drive_t *drive = to_ide_device(dev);
1527 return sprintf(buf, "%s\n", drive->id->serial_no);
1528}
1529
Kay Sievers263756e2005-12-12 18:03:44 +01001530static struct device_attribute ide_dev_attrs[] = {
1531 __ATTR_RO(media),
1532 __ATTR_RO(drivename),
1533 __ATTR_RO(modalias),
Bartlomiej Zolnierkiewicze11b9032007-12-12 23:31:58 +01001534 __ATTR_RO(model),
1535 __ATTR_RO(firmware),
1536 __ATTR(serial, 0400, serial_show, NULL),
Kay Sievers263756e2005-12-12 18:03:44 +01001537 __ATTR_NULL
1538};
1539
Kay Sievers7eff2e72007-08-14 15:15:12 +02001540static int ide_uevent(struct device *dev, struct kobj_uevent_env *env)
Kay Sievers263756e2005-12-12 18:03:44 +01001541{
1542 ide_drive_t *drive = to_ide_device(dev);
Kay Sievers263756e2005-12-12 18:03:44 +01001543
Kay Sievers7eff2e72007-08-14 15:15:12 +02001544 add_uevent_var(env, "MEDIA=%s", media_string(drive));
1545 add_uevent_var(env, "DRIVENAME=%s", drive->name);
1546 add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive));
Kay Sievers263756e2005-12-12 18:03:44 +01001547 return 0;
1548}
1549
Russell King4031bbe2006-01-06 11:41:00 +00001550static int generic_ide_probe(struct device *dev)
1551{
1552 ide_drive_t *drive = to_ide_device(dev);
1553 ide_driver_t *drv = to_ide_driver(dev->driver);
1554
1555 return drv->probe ? drv->probe(drive) : -ENODEV;
1556}
1557
1558static int generic_ide_remove(struct device *dev)
1559{
1560 ide_drive_t *drive = to_ide_device(dev);
1561 ide_driver_t *drv = to_ide_driver(dev->driver);
1562
1563 if (drv->remove)
1564 drv->remove(drive);
1565
1566 return 0;
1567}
1568
1569static void generic_ide_shutdown(struct device *dev)
1570{
1571 ide_drive_t *drive = to_ide_device(dev);
1572 ide_driver_t *drv = to_ide_driver(dev->driver);
1573
1574 if (dev->driver && drv->shutdown)
1575 drv->shutdown(drive);
1576}
1577
Linus Torvalds1da177e2005-04-16 15:20:36 -07001578struct bus_type ide_bus_type = {
1579 .name = "ide",
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001580 .match = ide_bus_match,
Kay Sievers263756e2005-12-12 18:03:44 +01001581 .uevent = ide_uevent,
Russell King4031bbe2006-01-06 11:41:00 +00001582 .probe = generic_ide_probe,
1583 .remove = generic_ide_remove,
1584 .shutdown = generic_ide_shutdown,
Kay Sievers263756e2005-12-12 18:03:44 +01001585 .dev_attrs = ide_dev_attrs,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 .suspend = generic_ide_suspend,
1587 .resume = generic_ide_resume,
1588};
1589
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +02001590EXPORT_SYMBOL_GPL(ide_bus_type);
1591
Linus Torvalds1da177e2005-04-16 15:20:36 -07001592/*
1593 * This is gets invoked once during initialization, to set *everything* up
1594 */
1595static int __init ide_init(void)
1596{
Randy Dunlap349ae232006-10-03 01:14:23 -07001597 int ret;
1598
Bartlomiej Zolnierkiewiczeba8ff92008-02-11 00:32:13 +01001599 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 system_bus_speed = ide_system_bus_speed();
1601
Bartlomiej Zolnierkiewicz537f06c2008-02-01 23:09:35 +01001602 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
1603 "for PIO modes%s\n", system_bus_speed,
1604 idebus_parameter ? "" : "; override with idebus=xx");
1605
Randy Dunlap349ae232006-10-03 01:14:23 -07001606 ret = bus_register(&ide_bus_type);
1607 if (ret < 0) {
1608 printk(KERN_WARNING "IDE: bus_register error: %d\n", ret);
1609 return ret;
1610 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611
1612 init_ide_data();
1613
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +02001614 proc_ide_create();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001615
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 return 0;
1617}
1618
1619#ifdef MODULE
1620static char *options = NULL;
1621module_param(options, charp, 0);
1622MODULE_LICENSE("GPL");
1623
1624static void __init parse_options (char *line)
1625{
1626 char *next = line;
1627
1628 if (line == NULL || !*line)
1629 return;
1630 while ((line = next) != NULL) {
1631 if ((next = strchr(line,' ')) != NULL)
1632 *next++ = 0;
1633 if (!ide_setup(line))
1634 printk (KERN_INFO "Unknown option '%s'\n", line);
1635 }
1636}
1637
Sam Ravnborgfbd8ad32006-03-25 03:07:11 -08001638int __init init_module (void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639{
1640 parse_options(options);
1641 return ide_init();
1642}
1643
Al Viroeb797222007-02-01 13:52:38 +00001644void __exit cleanup_module (void)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645{
1646 int index;
1647
1648 for (index = 0; index < MAX_HWIFS; ++index)
Bartlomiej Zolnierkiewiczf82c2b12008-02-02 19:56:39 +01001649 ide_unregister(index, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 proc_ide_destroy();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652
1653 bus_unregister(&ide_bus_type);
1654}
1655
1656#else /* !MODULE */
1657
1658__setup("", ide_setup);
1659
1660module_init(ide_init);
1661
1662#endif /* MODULE */