2 * linux/drivers/ide/ide.c Version 7.00beta2 Mar 05 2003
4 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
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>
12 * See linux/MAINTAINERS for address of current maintainer.
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
17 * There can be up to two drives per interface, as per the ATA-2 spec.
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
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!
31 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
33 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
34 * | in the early extended-partition checks and added DM partitions.
36 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
38 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
39 * | and general streamlining by Mark Lord (mlord@pobox.com).
41 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
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)
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
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,
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
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
119 * Some additional driver compile-time options are in ./include/linux/ide.h
121 * To do, in likely order of completion:
122 * - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f
126 #define REVISION "Revision: 7.00alpha2"
127 #define VERSION "Id: ide.c 7.00a2 20020906"
129 #undef REALLY_SLOW_IO /* most systems can safely undef this */
131 #define _IDE_C /* Tell ide.h it's really us */
133 #include <linux/config.h>
134 #include <linux/module.h>
135 #include <linux/types.h>
136 #include <linux/string.h>
137 #include <linux/kernel.h>
138 #include <linux/timer.h>
139 #include <linux/mm.h>
140 #include <linux/interrupt.h>
141 #include <linux/major.h>
142 #include <linux/errno.h>
143 #include <linux/genhd.h>
144 #include <linux/blkpg.h>
145 #include <linux/slab.h>
146 #include <linux/init.h>
147 #include <linux/pci.h>
148 #include <linux/delay.h>
149 #include <linux/ide.h>
150 #include <linux/devfs_fs_kernel.h>
151 #include <linux/completion.h>
152 #include <linux/reboot.h>
153 #include <linux/cdrom.h>
154 #include <linux/seq_file.h>
155 #include <linux/device.h>
157 #include <asm/byteorder.h>
159 #include <asm/uaccess.h>
161 #include <asm/bitops.h>
164 /* default maximum number of failures */
165 #define IDE_DEFAULT_MAX_FAILURES 1
167 static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
168 IDE2_MAJOR, IDE3_MAJOR,
169 IDE4_MAJOR, IDE5_MAJOR,
170 IDE6_MAJOR, IDE7_MAJOR,
171 IDE8_MAJOR, IDE9_MAJOR };
173 static int idebus_parameter; /* holds the "idebus=" parameter */
174 static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
175 static int initializing; /* set while initializing built-in drivers */
177 DECLARE_MUTEX(ide_cfg_sem);
178 spinlock_t ide_lock __cacheline_aligned_in_smp = SPIN_LOCK_UNLOCKED;
180 #ifdef CONFIG_BLK_DEV_IDEPCI
181 static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */
184 #ifdef CONFIG_IDEDMA_AUTO
190 EXPORT_SYMBOL(noautodma);
193 * This is declared extern in ide.h, for access by other IDE modules:
195 ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
197 EXPORT_SYMBOL(ide_hwifs);
199 extern ide_driver_t idedefault_driver;
200 static void setup_driver_defaults(ide_driver_t *driver);
203 * Do not even *think* about calling this!
205 static void init_hwif_data(ide_hwif_t *hwif, unsigned int index)
209 /* bulk initialize hwif & drive info with zeros */
210 memset(hwif, 0, sizeof(ide_hwif_t));
212 /* fill in any non-zero initial values */
214 hwif->major = ide_hwif_to_major[index];
219 hwif->name[3] = '0' + index;
221 hwif->bus_state = BUSSTATE_ON;
223 hwif->atapi_dma = 0; /* disable all atapi dma */
224 hwif->ultra_mask = 0x80; /* disable all ultra */
225 hwif->mwdma_mask = 0x80; /* disable all mwdma */
226 hwif->swdma_mask = 0x80; /* disable all swdma */
228 sema_init(&hwif->gendev_rel_sem, 0);
230 default_hwif_iops(hwif);
231 default_hwif_transport(hwif);
232 for (unit = 0; unit < MAX_DRIVES; ++unit) {
233 ide_drive_t *drive = &hwif->drives[unit];
235 drive->media = ide_disk;
236 drive->select.all = (unit<<4)|0xa0;
239 drive->ready_stat = READY_STAT;
240 drive->bad_wstat = BAD_W_STAT;
241 drive->special.b.recalibrate = 1;
242 drive->special.b.set_geometry = 1;
243 drive->name[0] = 'h';
244 drive->name[1] = 'd';
245 drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
246 drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
247 drive->using_dma = 0;
249 drive->driver = &idedefault_driver;
251 INIT_LIST_HEAD(&drive->list);
252 sema_init(&drive->gendev_rel_sem, 0);
256 static void init_hwif_default(ide_hwif_t *hwif, unsigned int index)
260 memset(&hw, 0, sizeof(hw_regs_t));
262 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, &hwif->irq);
264 memcpy(&hwif->hw, &hw, sizeof(hw));
265 memcpy(hwif->io_ports, hw.io_ports, sizeof(hw.io_ports));
267 hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
268 #ifdef CONFIG_BLK_DEV_HD
269 if (hwif->io_ports[IDE_DATA_OFFSET] == HD_DATA)
270 hwif->noprobe = 1; /* may be overridden by ide_setup() */
274 extern void ide_arm_init(void);
277 * init_ide_data() sets reasonable default values into all fields
278 * of all instances of the hwifs and drives, but only on the first call.
279 * Subsequent calls have no effect (they don't wipe out anything).
281 * This routine is normally called at driver initialization time,
282 * but may also be called MUCH earlier during kernel "command-line"
283 * parameter processing. As such, we cannot depend on any other parts
284 * of the kernel (such as memory allocation) to be functioning yet.
286 * This is too bad, as otherwise we could dynamically allocate the
287 * ide_drive_t structs as needed, rather than always consuming memory
288 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
290 * FIXME: We should stuff the setup data into __init and copy the
291 * relevant hwifs/allocate them properly during boot.
293 #define MAGIC_COOKIE 0x12345678
294 static void __init init_ide_data (void)
298 static unsigned long magic_cookie = MAGIC_COOKIE;
300 if (magic_cookie != MAGIC_COOKIE)
301 return; /* already initialized */
304 setup_driver_defaults(&idedefault_driver);
306 /* Initialise all interface structures */
307 for (index = 0; index < MAX_HWIFS; ++index) {
308 hwif = &ide_hwifs[index];
309 init_hwif_data(hwif, index);
310 init_hwif_default(hwif, index);
311 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
312 hwif->irq = hwif->hw.irq =
313 ide_init_default_irq(hwif->io_ports[IDE_DATA_OFFSET]);
316 #ifdef CONFIG_IDE_ARM
324 * ide_system_bus_speed() returns what we think is the system VESA/PCI
325 * bus speed (in MHz). This is used for calculating interface PIO timings.
326 * The default is 40 for known PCI systems, 50 otherwise.
327 * The "idebus=xx" parameter can be used to override this value.
328 * The actual value to be used is computed/displayed the first time through.
330 int ide_system_bus_speed (void)
332 if (!system_bus_speed) {
333 if (idebus_parameter) {
334 /* user supplied value */
335 system_bus_speed = idebus_parameter;
336 } else if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID, NULL) != NULL) {
337 /* safe default value for PCI */
338 system_bus_speed = 33;
340 /* safe default value for VESA and PCI */
341 system_bus_speed = 50;
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");
347 return system_bus_speed;
351 * current_capacity() returns the capacity (in sectors) of a drive
352 * according to its current geometry/LBA settings.
354 sector_t current_capacity (ide_drive_t *drive)
358 return DRIVER(drive)->capacity(drive);
361 EXPORT_SYMBOL(current_capacity);
364 * Error reporting, in human readable form (luxurious, but a memory hog).
366 u8 ide_dump_status (ide_drive_t *drive, const char *msg, u8 stat)
368 ide_hwif_t *hwif = HWIF(drive);
372 local_irq_set(flags);
373 printk(KERN_WARNING "%s: %s: status=0x%02x", drive->name, msg, stat);
374 #if FANCY_STATUS_DUMPS
376 if (stat & BUSY_STAT) {
379 if (stat & READY_STAT) printk("DriveReady ");
380 if (stat & WRERR_STAT) printk("DeviceFault ");
381 if (stat & SEEK_STAT) printk("SeekComplete ");
382 if (stat & DRQ_STAT) printk("DataRequest ");
383 if (stat & ECC_STAT) printk("CorrectedError ");
384 if (stat & INDEX_STAT) printk("Index ");
385 if (stat & ERR_STAT) printk("Error ");
388 #endif /* FANCY_STATUS_DUMPS */
390 if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
391 err = hwif->INB(IDE_ERROR_REG);
392 printk("%s: %s: error=0x%02x", drive->name, msg, err);
393 #if FANCY_STATUS_DUMPS
394 if (drive->media == ide_disk) {
396 if (err & ABRT_ERR) printk("DriveStatusError ");
397 if (err & ICRC_ERR) printk("Bad%s ", (err & ABRT_ERR) ? "CRC" : "Sector");
398 if (err & ECC_ERR) printk("UncorrectableError ");
399 if (err & ID_ERR) printk("SectorIdNotFound ");
400 if (err & TRK0_ERR) printk("TrackZeroNotFound ");
401 if (err & MARK_ERR) printk("AddrMarkNotFound ");
403 if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || (err & (ECC_ERR|ID_ERR|MARK_ERR))) {
404 if ((drive->id->command_set_2 & 0x0400) &&
405 (drive->id->cfs_enable_2 & 0x0400) &&
406 (drive->addressing == 1)) {
409 u32 low = ide_read_24(drive);
410 hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
411 high = ide_read_24(drive);
413 sectors = ((u64)high << 24) | low;
414 printk(", LBAsect=%llu, high=%d, low=%d",
418 u8 cur = hwif->INB(IDE_SELECT_REG);
419 if (cur & 0x40) { /* using LBA? */
420 printk(", LBAsect=%ld", (unsigned long)
422 |(hwif->INB(IDE_HCYL_REG)<<16)
423 |(hwif->INB(IDE_LCYL_REG)<<8)
424 | hwif->INB(IDE_SECTOR_REG));
426 printk(", CHS=%d/%d/%d",
427 (hwif->INB(IDE_HCYL_REG)<<8) +
428 hwif->INB(IDE_LCYL_REG),
430 hwif->INB(IDE_SECTOR_REG));
433 if (HWGROUP(drive) && HWGROUP(drive)->rq)
434 printk(", sector=%llu", (unsigned long long)HWGROUP(drive)->rq->sector);
437 #endif /* FANCY_STATUS_DUMPS */
440 local_irq_restore(flags);
444 EXPORT_SYMBOL(ide_dump_status);
446 static int ide_open (struct inode * inode, struct file * filp)
451 static spinlock_t drives_lock = SPIN_LOCK_UNLOCKED;
452 static spinlock_t drivers_lock = SPIN_LOCK_UNLOCKED;
453 static LIST_HEAD(drivers);
456 static void *m_start(struct seq_file *m, loff_t *pos)
460 spin_lock(&drivers_lock);
461 list_for_each(p, &drivers)
463 return list_entry(p, ide_driver_t, drivers);
466 static void *m_next(struct seq_file *m, void *v, loff_t *pos)
468 struct list_head *p = ((ide_driver_t *)v)->drivers.next;
470 return p==&drivers ? NULL : list_entry(p, ide_driver_t, drivers);
472 static void m_stop(struct seq_file *m, void *v)
474 spin_unlock(&drivers_lock);
476 static int show_driver(struct seq_file *m, void *v)
478 ide_driver_t *driver = v;
479 seq_printf(m, "%s version %s\n", driver->name, driver->version);
482 struct seq_operations ide_drivers_op = {
489 #ifdef CONFIG_PROC_FS
490 struct proc_dir_entry *proc_ide_root;
492 ide_proc_entry_t generic_subdriver_entries[] = {
493 { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
494 { NULL, 0, NULL, NULL }
498 static struct resource* hwif_request_region(ide_hwif_t *hwif,
499 unsigned long addr, int num)
501 struct resource *res = request_region(addr, num, hwif->name);
504 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
505 hwif->name, addr, addr+num-1);
510 * ide_hwif_request_regions - request resources for IDE
511 * @hwif: interface to use
513 * Requests all the needed resources for an interface.
514 * Right now core IDE code does this work which is deeply wrong.
515 * MMIO leaves it to the controller driver,
516 * PIO will migrate this way over time.
518 int ide_hwif_request_regions(ide_hwif_t *hwif)
525 BUG_ON(hwif->mmio == 1);
526 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
527 if (addr && !hwif_request_region(hwif, addr, 1))
528 goto control_region_busy;
530 addr = hwif->io_ports[IDE_DATA_OFFSET];
531 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
532 if (!hwif_request_region(hwif, addr, 8))
533 goto data_region_busy;
537 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
538 addr = hwif->io_ports[i];
539 if (!hwif_request_region(hwif, addr, 1)) {
541 release_region(addr, 1);
542 goto data_region_busy;
548 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
550 release_region(addr, 1);
552 /* If any errors are return, we drop the hwif interface. */
557 * ide_hwif_release_regions - free IDE resources
559 * Note that we only release the standard ports,
560 * and do not even try to handle any extra ports
561 * allocated for weird IDE interface chipsets.
563 * Note also that we don't yet handle mmio resources here. More
564 * importantly our caller should be doing this so we need to
565 * restructure this as a helper function for drivers.
567 void ide_hwif_release_regions(ide_hwif_t *hwif)
573 if (hwif->io_ports[IDE_CONTROL_OFFSET])
574 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
575 if (hwif->straight8) {
576 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
579 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
580 if (hwif->io_ports[i])
581 release_region(hwif->io_ports[i], 1);
584 /* restore hwif to a sane state */
585 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
587 hwif->hwgroup = tmp_hwif->hwgroup;
589 hwif->gendev.parent = tmp_hwif->gendev.parent;
591 hwif->proc = tmp_hwif->proc;
593 hwif->major = tmp_hwif->major;
594 hwif->straight8 = tmp_hwif->straight8;
595 hwif->bus_state = tmp_hwif->bus_state;
597 hwif->atapi_dma = tmp_hwif->atapi_dma;
598 hwif->ultra_mask = tmp_hwif->ultra_mask;
599 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
600 hwif->swdma_mask = tmp_hwif->swdma_mask;
602 hwif->chipset = tmp_hwif->chipset;
603 hwif->hold = tmp_hwif->hold;
605 #ifdef CONFIG_BLK_DEV_IDEPCI
606 hwif->pci_dev = tmp_hwif->pci_dev;
607 hwif->cds = tmp_hwif->cds;
610 hwif->identify = tmp_hwif->identify;
611 hwif->tuneproc = tmp_hwif->tuneproc;
612 hwif->speedproc = tmp_hwif->speedproc;
613 hwif->selectproc = tmp_hwif->selectproc;
614 hwif->reset_poll = tmp_hwif->reset_poll;
615 hwif->pre_reset = tmp_hwif->pre_reset;
616 hwif->resetproc = tmp_hwif->resetproc;
617 hwif->intrproc = tmp_hwif->intrproc;
618 hwif->maskproc = tmp_hwif->maskproc;
619 hwif->quirkproc = tmp_hwif->quirkproc;
620 hwif->busproc = tmp_hwif->busproc;
622 hwif->ata_input_data = tmp_hwif->ata_input_data;
623 hwif->ata_output_data = tmp_hwif->ata_output_data;
624 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
625 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
627 hwif->ide_dma_read = tmp_hwif->ide_dma_read;
628 hwif->ide_dma_write = tmp_hwif->ide_dma_write;
629 hwif->ide_dma_begin = tmp_hwif->ide_dma_begin;
630 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
631 hwif->ide_dma_check = tmp_hwif->ide_dma_check;
632 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
633 hwif->ide_dma_off_quietly = tmp_hwif->ide_dma_off_quietly;
634 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
635 hwif->ide_dma_host_on = tmp_hwif->ide_dma_host_on;
636 hwif->ide_dma_host_off = tmp_hwif->ide_dma_host_off;
637 hwif->ide_dma_verbose = tmp_hwif->ide_dma_verbose;
638 hwif->ide_dma_lostirq = tmp_hwif->ide_dma_lostirq;
639 hwif->ide_dma_timeout = tmp_hwif->ide_dma_timeout;
641 hwif->OUTB = tmp_hwif->OUTB;
642 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
643 hwif->OUTW = tmp_hwif->OUTW;
644 hwif->OUTL = tmp_hwif->OUTL;
645 hwif->OUTSW = tmp_hwif->OUTSW;
646 hwif->OUTSL = tmp_hwif->OUTSL;
648 hwif->INB = tmp_hwif->INB;
649 hwif->INW = tmp_hwif->INW;
650 hwif->INL = tmp_hwif->INL;
651 hwif->INSW = tmp_hwif->INSW;
652 hwif->INSL = tmp_hwif->INSL;
654 hwif->mmio = tmp_hwif->mmio;
655 hwif->rqsize = tmp_hwif->rqsize;
656 hwif->no_lba48 = tmp_hwif->no_lba48;
658 #ifndef CONFIG_BLK_DEV_IDECS
659 hwif->irq = tmp_hwif->irq;
662 hwif->dma_base = tmp_hwif->dma_base;
663 hwif->dma_master = tmp_hwif->dma_master;
664 hwif->dma_command = tmp_hwif->dma_command;
665 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
666 hwif->dma_status = tmp_hwif->dma_status;
667 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
668 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
670 hwif->dma_extra = tmp_hwif->dma_extra;
671 hwif->config_data = tmp_hwif->config_data;
672 hwif->select_data = tmp_hwif->select_data;
673 hwif->autodma = tmp_hwif->autodma;
674 hwif->udma_four = tmp_hwif->udma_four;
675 hwif->no_dsc = tmp_hwif->no_dsc;
677 hwif->hwif_data = tmp_hwif->hwif_data;
681 * ide_unregister - free an ide interface
682 * @index: index of interface (will change soon to a pointer)
684 * Perform the final unregister of an IDE interface. At the moment
685 * we don't refcount interfaces so this will also get split up.
688 * The caller must not hold the IDE locks
689 * The drive present/vanishing is not yet properly locked
690 * Take care with the callbacks. These have been split to avoid
691 * deadlocking the IDE layer. The shutdown callback is called
692 * before we take the lock and free resources. It is up to the
693 * caller to be sure there is no pending I/O here, and that
694 * the interfce will not be reopened (present/vanishing locking
695 * isnt yet done btw). After we commit to the final kill we
696 * call the cleanup callback with the ide locks held.
698 * Unregister restores the hwif structures to the default state.
699 * This is raving bonkers.
702 void ide_unregister(unsigned int index)
705 ide_hwif_t *hwif, *g, *tmp_hwif;
706 ide_hwgroup_t *hwgroup;
707 int irq_count = 0, unit, i;
709 BUG_ON(index >= MAX_HWIFS);
711 tmp_hwif = kmalloc(sizeof(*tmp_hwif), GFP_KERNEL|__GFP_NOFAIL);
713 printk(KERN_ERR "%s: unable to allocate memory\n", __FUNCTION__);
717 BUG_ON(in_interrupt());
718 BUG_ON(irqs_disabled());
720 spin_lock_irq(&ide_lock);
721 hwif = &ide_hwifs[index];
724 for (unit = 0; unit < MAX_DRIVES; ++unit) {
725 drive = &hwif->drives[unit];
728 if (drive->usage || DRIVER(drive)->busy)
734 spin_unlock_irq(&ide_lock);
736 for (unit = 0; unit < MAX_DRIVES; ++unit) {
737 drive = &hwif->drives[unit];
740 DRIVER(drive)->cleanup(drive);
743 #ifdef CONFIG_PROC_FS
744 destroy_proc_ide_drives(hwif);
747 hwgroup = hwif->hwgroup;
749 * free the irq if we were the only hwif using it
753 if (g->irq == hwif->irq)
756 } while (g != hwgroup->hwif);
758 free_irq(hwif->irq, hwgroup);
760 spin_lock_irq(&ide_lock);
762 * Note that we only release the standard ports,
763 * and do not even try to handle any extra ports
764 * allocated for weird IDE interface chipsets.
766 ide_hwif_release_regions(hwif);
769 * Remove us from the hwgroup, and free
770 * the hwgroup if we were the only member
772 for (i = 0; i < MAX_DRIVES; ++i) {
773 drive = &hwif->drives[i];
774 if (drive->devfs_name[0] != '\0') {
775 devfs_remove(drive->devfs_name);
776 drive->devfs_name[0] = '\0';
780 if (drive == drive->next) {
781 /* special case: last drive from hwgroup. */
782 BUG_ON(hwgroup->drive != drive);
783 hwgroup->drive = NULL;
787 walk = hwgroup->drive;
788 while (walk->next != drive)
790 walk->next = drive->next;
791 if (hwgroup->drive == drive) {
792 hwgroup->drive = drive->next;
793 hwgroup->hwif = HWIF(hwgroup->drive);
796 BUG_ON(hwgroup->drive == drive);
797 if (drive->id != NULL) {
802 /* Messed up locking ... */
803 spin_unlock_irq(&ide_lock);
804 blk_cleanup_queue(drive->queue);
805 device_unregister(&drive->gendev);
806 down(&drive->gendev_rel_sem);
807 spin_lock_irq(&ide_lock);
810 if (hwif->next == hwif) {
811 BUG_ON(hwgroup->hwif != hwif);
814 /* There is another interface in hwgroup.
815 * Unlink us, and set hwgroup->drive and ->hwif to
819 while (g->next != hwif)
821 g->next = hwif->next;
822 if (hwgroup->hwif == hwif) {
823 /* Chose a random hwif for hwgroup->hwif.
824 * It's guaranteed that there are no drives
825 * left in the hwgroup.
827 BUG_ON(hwgroup->drive != NULL);
830 BUG_ON(hwgroup->hwif == hwif);
833 /* More messed up locking ... */
834 spin_unlock_irq(&ide_lock);
835 device_unregister(&hwif->gendev);
836 down(&hwif->gendev_rel_sem);
839 * Remove us from the kernel's knowledge
841 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
842 for (i = 0; i < MAX_DRIVES; i++) {
843 struct gendisk *disk = hwif->drives[i].disk;
844 hwif->drives[i].disk = NULL;
847 unregister_blkdev(hwif->major, hwif->name);
848 spin_lock_irq(&ide_lock);
850 if (hwif->dma_base) {
851 (void) ide_release_dma(hwif);
854 hwif->dma_master = 0;
855 hwif->dma_command = 0;
856 hwif->dma_vendor1 = 0;
857 hwif->dma_status = 0;
858 hwif->dma_vendor3 = 0;
859 hwif->dma_prdtable = 0;
862 /* copy original settings */
865 /* restore hwif data to pristine status */
866 init_hwif_data(hwif, index);
867 init_hwif_default(hwif, index);
869 ide_hwif_restore(hwif, tmp_hwif);
872 spin_unlock_irq(&ide_lock);
878 EXPORT_SYMBOL(ide_unregister);
882 * ide_setup_ports - set up IDE interface ports
883 * @hw: register descriptions
884 * @base: base register
885 * @offsets: table of register offsets
886 * @ctrl: control register
888 * @irq: interrupt lie
890 * Setup hw_regs_t structure described by parameters. You
891 * may set up the hw structure yourself OR use this routine to
892 * do it for you. This is basically a helper
896 void ide_setup_ports ( hw_regs_t *hw,
897 unsigned long base, int *offsets,
898 unsigned long ctrl, unsigned long intr,
899 ide_ack_intr_t *ack_intr,
901 * ide_io_ops_t *iops,
907 for (i = 0; i < IDE_NR_PORTS; i++) {
908 if (offsets[i] == -1) {
910 case IDE_CONTROL_OFFSET:
911 hw->io_ports[i] = ctrl;
913 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
915 hw->io_ports[i] = intr;
917 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
923 hw->io_ports[i] = base + offsets[i];
928 hw->ack_intr = ack_intr;
935 * Register an IDE interface, specifying exactly the registers etc
936 * Set init=1 iff calling before probes have taken place.
938 int ide_register_hw (hw_regs_t *hw, ide_hwif_t **hwifp)
940 int index, retry = 1;
944 for (index = 0; index < MAX_HWIFS; ++index) {
945 hwif = &ide_hwifs[index];
946 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
949 for (index = 0; index < MAX_HWIFS; ++index) {
950 hwif = &ide_hwifs[index];
953 if ((!hwif->present && !hwif->mate && !initializing) ||
954 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
957 for (index = 0; index < MAX_HWIFS; index++)
958 ide_unregister(index);
963 ide_unregister(index);
964 else if (!hwif->hold) {
965 init_hwif_data(hwif, index);
966 init_hwif_default(hwif, index);
970 memcpy(&hwif->hw, hw, sizeof(*hw));
971 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
974 hwif->chipset = hw->chipset;
977 probe_hwif_init(hwif);
978 create_proc_ide_interfaces();
984 return (initializing || hwif->present) ? index : -1;
987 EXPORT_SYMBOL(ide_register_hw);
990 * Locks for IDE setting functionality
993 DECLARE_MUTEX(ide_setting_sem);
996 * ide_add_setting - add an ide setting option
997 * @drive: drive to use
998 * @name: setting name
999 * @rw: true if the function is read write
1000 * @read_ioctl: function to call on read
1001 * @write_ioctl: function to call on write
1002 * @data_type: type of data
1003 * @min: range minimum
1004 * @max: range maximum
1005 * @mul_factor: multiplication scale
1006 * @div_factor: divison scale
1007 * @data: private data field
1010 * Removes the setting named from the device if it is present.
1011 * The function takes the settings_lock to protect against
1012 * parallel changes. This function must not be called from IRQ
1013 * context. Returns 0 on success or -1 on failure.
1015 * BUGS: This code is seriously over-engineered. There is also
1016 * magic about how the driver specific features are setup. If
1017 * a driver is attached we assume the driver settings are auto
1021 int ide_add_setting (ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set)
1023 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
1025 down(&ide_setting_sem);
1026 while ((*p) && strcmp((*p)->name, name) < 0)
1028 if ((setting = kmalloc(sizeof(*setting), GFP_KERNEL)) == NULL)
1030 memset(setting, 0, sizeof(*setting));
1031 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL)
1033 strcpy(setting->name, name);
1035 setting->read_ioctl = read_ioctl;
1036 setting->write_ioctl = write_ioctl;
1037 setting->data_type = data_type;
1040 setting->mul_factor = mul_factor;
1041 setting->div_factor = div_factor;
1042 setting->data = data;
1046 if (drive->driver != &idedefault_driver)
1047 setting->auto_remove = 1;
1049 up(&ide_setting_sem);
1052 up(&ide_setting_sem);
1058 EXPORT_SYMBOL(ide_add_setting);
1061 * __ide_remove_setting - remove an ide setting option
1062 * @drive: drive to use
1063 * @name: setting name
1065 * Removes the setting named from the device if it is present.
1066 * The caller must hold the setting semaphore.
1069 static void __ide_remove_setting (ide_drive_t *drive, char *name)
1071 ide_settings_t **p, *setting;
1073 p = (ide_settings_t **) &drive->settings;
1075 while ((*p) && strcmp((*p)->name, name))
1077 if ((setting = (*p)) == NULL)
1080 (*p) = setting->next;
1082 kfree(setting->name);
1087 * ide_find_setting_by_ioctl - find a drive specific ioctl
1088 * @drive: drive to scan
1089 * @cmd: ioctl command to handle
1091 * Scan's the device setting table for a matching entry and returns
1092 * this or NULL if no entry is found. The caller must hold the
1096 static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd)
1098 ide_settings_t *setting = drive->settings;
1101 if (setting->read_ioctl == cmd || setting->write_ioctl == cmd)
1103 setting = setting->next;
1110 * ide_find_setting_by_name - find a drive specific setting
1111 * @drive: drive to scan
1112 * @name: setting name
1114 * Scan's the device setting table for a matching entry and returns
1115 * this or NULL if no entry is found. The caller must hold the
1119 ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name)
1121 ide_settings_t *setting = drive->settings;
1124 if (strcmp(setting->name, name) == 0)
1126 setting = setting->next;
1132 * auto_remove_settings - remove driver specific settings
1135 * Automatically remove all the driver specific settings for this
1136 * drive. This function may sleep and must not be called from IRQ
1137 * context. The caller must hold ide_setting_sem.
1140 static void auto_remove_settings (ide_drive_t *drive)
1142 ide_settings_t *setting;
1144 setting = drive->settings;
1146 if (setting->auto_remove) {
1147 __ide_remove_setting(drive, setting->name);
1150 setting = setting->next;
1155 * ide_read_setting - read an IDE setting
1156 * @drive: drive to read from
1157 * @setting: drive setting
1159 * Read a drive setting and return the value. The caller
1160 * must hold the ide_setting_sem when making this call.
1162 * BUGS: the data return and error are the same return value
1163 * so an error -EINVAL and true return of the same value cannot
1167 int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting)
1170 unsigned long flags;
1172 if ((setting->rw & SETTING_READ)) {
1173 spin_lock_irqsave(&ide_lock, flags);
1174 switch(setting->data_type) {
1176 val = *((u8 *) setting->data);
1179 val = *((u16 *) setting->data);
1183 val = *((u32 *) setting->data);
1186 spin_unlock_irqrestore(&ide_lock, flags);
1191 int ide_spin_wait_hwgroup (ide_drive_t *drive)
1193 ide_hwgroup_t *hwgroup = HWGROUP(drive);
1194 unsigned long timeout = jiffies + (3 * HZ);
1196 spin_lock_irq(&ide_lock);
1198 while (hwgroup->busy) {
1199 unsigned long lflags;
1200 spin_unlock_irq(&ide_lock);
1201 local_irq_set(lflags);
1202 if (time_after(jiffies, timeout)) {
1203 local_irq_restore(lflags);
1204 printk(KERN_ERR "%s: channel busy\n", drive->name);
1207 local_irq_restore(lflags);
1208 spin_lock_irq(&ide_lock);
1213 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
1216 * ide_write_setting - read an IDE setting
1217 * @drive: drive to read from
1218 * @setting: drive setting
1221 * Write a drive setting if it is possible. The caller
1222 * must hold the ide_setting_sem when making this call.
1224 * BUGS: the data return and error are the same return value
1225 * so an error -EINVAL and true return of the same value cannot
1228 * FIXME: This should be changed to enqueue a special request
1229 * to the driver to change settings, and then wait on a sema for completion.
1230 * The current scheme of polling is kludgy, though safe enough.
1232 int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val)
1237 if (!capable(CAP_SYS_ADMIN))
1239 if (!(setting->rw & SETTING_WRITE))
1241 if (val < setting->min || val > setting->max)
1244 return setting->set(drive, val);
1245 if (ide_spin_wait_hwgroup(drive))
1247 switch (setting->data_type) {
1249 *((u8 *) setting->data) = val;
1252 *((u16 *) setting->data) = val;
1255 *((u32 *) setting->data) = val;
1258 p = (u32 *) setting->data;
1259 for (i = 0; i < 1 << PARTN_BITS; i++, p++)
1263 spin_unlock_irq(&ide_lock);
1267 static int set_io_32bit(ide_drive_t *drive, int arg)
1269 drive->io_32bit = arg;
1270 #ifdef CONFIG_BLK_DEV_DTC2278
1271 if (HWIF(drive)->chipset == ide_dtc2278)
1272 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
1273 #endif /* CONFIG_BLK_DEV_DTC2278 */
1277 static int set_using_dma (ide_drive_t *drive, int arg)
1279 #ifdef CONFIG_BLK_DEV_IDEDMA
1280 if (!drive->id || !(drive->id->capability & 1))
1282 if (HWIF(drive)->ide_dma_check == NULL)
1285 if (HWIF(drive)->ide_dma_check(drive)) return -EIO;
1286 if (HWIF(drive)->ide_dma_on(drive)) return -EIO;
1288 if (__ide_dma_off(drive))
1297 static int set_pio_mode (ide_drive_t *drive, int arg)
1301 if (!HWIF(drive)->tuneproc)
1303 if (drive->special.b.set_tune)
1305 ide_init_drive_cmd(&rq);
1306 drive->tune_req = (u8) arg;
1307 drive->special.b.set_tune = 1;
1308 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
1312 static int set_xfer_rate (ide_drive_t *drive, int arg)
1314 int err = ide_wait_cmd(drive,
1315 WIN_SETFEATURES, (u8) arg,
1316 SETFEATURES_XFER, 0, NULL);
1319 ide_set_xfer_rate(drive, (u8) arg);
1320 ide_driveid_update(drive);
1325 int ide_atapi_to_scsi (ide_drive_t *drive, int arg)
1327 if (drive->media == ide_disk) {
1332 if (DRIVER(drive)->cleanup(drive)) {
1337 drive->scsi = (u8) arg;
1342 void ide_add_generic_settings (ide_drive_t *drive)
1345 * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function
1347 ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit);
1348 ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL);
1349 ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL);
1350 ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode);
1351 ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL);
1352 ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma);
1353 ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL);
1354 ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate);
1355 ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL);
1356 if (drive->media != ide_disk)
1357 ide_add_setting(drive, "ide-scsi", SETTING_RW, -1, HDIO_SET_IDE_SCSI, TYPE_BYTE, 0, 1, 1, 1, &drive->scsi, ide_atapi_to_scsi);
1360 int system_bus_clock (void)
1362 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
1365 EXPORT_SYMBOL(system_bus_clock);
1368 * Locking is badly broken here - since way back. That sucker is
1369 * root-only, but that's not an excuse... The real question is what
1370 * exclusion rules do we want here.
1372 int ide_replace_subdriver (ide_drive_t *drive, const char *driver)
1374 if (!drive->present || drive->usage || drive->dead)
1376 if (DRIVER(drive)->cleanup(drive))
1378 strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
1379 if (ata_attach(drive)) {
1380 spin_lock(&drives_lock);
1381 list_del_init(&drive->list);
1382 spin_unlock(&drives_lock);
1383 drive->driver_req[0] = 0;
1386 drive->driver_req[0] = 0;
1388 if (DRIVER(drive)!= &idedefault_driver && !strcmp(DRIVER(drive)->name, driver))
1394 int ata_attach(ide_drive_t *drive)
1396 struct list_head *p;
1397 spin_lock(&drivers_lock);
1398 list_for_each(p, &drivers) {
1399 ide_driver_t *driver = list_entry(p, ide_driver_t, drivers);
1400 if (!try_module_get(driver->owner))
1402 spin_unlock(&drivers_lock);
1403 if (driver->attach(drive) == 0) {
1404 module_put(driver->owner);
1405 drive->gendev.driver = &driver->gen_driver;
1408 spin_lock(&drivers_lock);
1409 module_put(driver->owner);
1411 drive->gendev.driver = &idedefault_driver.gen_driver;
1412 spin_unlock(&drivers_lock);
1413 if(idedefault_driver.attach(drive) != 0)
1414 panic("ide: default attach failed");
1418 static int generic_ide_suspend(struct device *dev, u32 state)
1420 ide_drive_t *drive = dev->driver_data;
1422 struct request_pm_state rqpm;
1425 memset(&rq, 0, sizeof(rq));
1426 memset(&rqpm, 0, sizeof(rqpm));
1427 memset(&args, 0, sizeof(args));
1428 rq.flags = REQ_PM_SUSPEND;
1431 rqpm.pm_step = ide_pm_state_start_suspend;
1432 rqpm.pm_state = state;
1434 return ide_do_drive_cmd(drive, &rq, ide_wait);
1437 static int generic_ide_resume(struct device *dev)
1439 ide_drive_t *drive = dev->driver_data;
1441 struct request_pm_state rqpm;
1444 memset(&rq, 0, sizeof(rq));
1445 memset(&rqpm, 0, sizeof(rqpm));
1446 memset(&args, 0, sizeof(args));
1447 rq.flags = REQ_PM_RESUME;
1450 rqpm.pm_step = ide_pm_state_start_resume;
1453 return ide_do_drive_cmd(drive, &rq, ide_head_wait);
1456 int generic_ide_ioctl(struct block_device *bdev, unsigned int cmd,
1459 ide_drive_t *drive = bdev->bd_disk->private_data;
1460 ide_settings_t *setting;
1462 void __user *p = (void __user *)arg;
1464 down(&ide_setting_sem);
1465 if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) {
1466 if (cmd == setting->read_ioctl) {
1467 err = ide_read_setting(drive, setting);
1468 up(&ide_setting_sem);
1469 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1471 if (bdev != bdev->bd_contains)
1474 err = ide_write_setting(drive, setting, arg);
1475 up(&ide_setting_sem);
1479 up(&ide_setting_sem);
1484 struct hd_geometry geom;
1485 if (!p || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL;
1486 geom.heads = drive->bios_head;
1487 geom.sectors = drive->bios_sect;
1488 geom.cylinders = (u16)drive->bios_cyl; /* truncate */
1489 geom.start = get_start_sect(bdev);
1490 if (copy_to_user(p, &geom, sizeof(struct hd_geometry)))
1495 case HDIO_OBSOLETE_IDENTITY:
1496 case HDIO_GET_IDENTITY:
1497 if (bdev != bdev->bd_contains)
1499 if (drive->id_read == 0)
1501 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1506 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1507 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1508 drive->nice0 << IDE_NICE_0 |
1509 drive->nice1 << IDE_NICE_1 |
1510 drive->nice2 << IDE_NICE_2,
1511 (long __user *) arg);
1513 #ifdef CONFIG_IDE_TASK_IOCTL
1514 case HDIO_DRIVE_TASKFILE:
1515 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1517 switch(drive->media) {
1519 return ide_taskfile_ioctl(drive, cmd, arg);
1523 #endif /* CONFIG_IDE_TASK_IOCTL */
1525 case HDIO_DRIVE_CMD:
1526 if (!capable(CAP_SYS_RAWIO))
1528 return ide_cmd_ioctl(drive, cmd, arg);
1530 case HDIO_DRIVE_TASK:
1531 if (!capable(CAP_SYS_RAWIO))
1533 return ide_task_ioctl(drive, cmd, arg);
1535 case HDIO_SCAN_HWIF:
1539 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1540 if (copy_from_user(args, p, 3 * sizeof(int)))
1542 memset(&hw, 0, sizeof(hw));
1543 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1544 (unsigned long) args[1], NULL);
1546 if (ide_register_hw(&hw, NULL) == -1)
1550 case HDIO_UNREGISTER_HWIF:
1551 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1552 /* (arg > MAX_HWIFS) checked in function */
1553 ide_unregister(arg);
1556 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1557 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1559 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1560 if (drive->dsc_overlap && !DRIVER(drive)->supports_dsc_overlap) {
1561 drive->dsc_overlap = 0;
1564 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1566 case HDIO_DRIVE_RESET:
1568 unsigned long flags;
1569 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1572 * Abort the current command on the
1573 * group if there is one, taking
1574 * care not to allow anything else
1575 * to be queued and to die on the
1576 * spot if we miss one somehow
1579 spin_lock_irqsave(&ide_lock, flags);
1581 DRIVER(drive)->abort(drive, "drive reset");
1582 if(HWGROUP(drive)->handler)
1585 /* Ensure nothing gets queued after we
1586 drop the lock. Reset will clear the busy */
1588 HWGROUP(drive)->busy = 1;
1589 spin_unlock_irqrestore(&ide_lock, flags);
1590 (void) ide_do_reset(drive);
1591 if (drive->suspend_reset) {
1593 * APM WAKE UP todo !!
1594 * int nogoodpower = 1;
1595 * while(nogoodpower) {
1596 * check_power1() or check_power2()
1599 * HWIF(drive)->multiproc(drive);
1601 return ioctl_by_bdev(bdev, BLKRRPART, 0);
1607 case CDROMCLOSETRAY:
1608 return scsi_cmd_ioctl(bdev->bd_disk, cmd, p);
1610 case HDIO_GET_BUSSTATE:
1611 if (!capable(CAP_SYS_ADMIN))
1613 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1617 case HDIO_SET_BUSSTATE:
1618 if (!capable(CAP_SYS_ADMIN))
1620 if (HWIF(drive)->busproc)
1621 return HWIF(drive)->busproc(drive, (int)arg);
1628 EXPORT_SYMBOL(generic_ide_ioctl);
1631 * stridx() returns the offset of c within s,
1632 * or -1 if c is '\0' or not found within s.
1634 static int __init stridx (const char *s, char c)
1636 char *i = strchr(s, c);
1637 return (i && c) ? i - s : -1;
1641 * match_parm() does parsing for ide_setup():
1643 * 1. the first char of s must be '='.
1644 * 2. if the remainder matches one of the supplied keywords,
1645 * the index (1 based) of the keyword is negated and returned.
1646 * 3. if the remainder is a series of no more than max_vals numbers
1647 * separated by commas, the numbers are saved in vals[] and a
1648 * count of how many were saved is returned. Base10 is assumed,
1649 * and base16 is allowed when prefixed with "0x".
1650 * 4. otherwise, zero is returned.
1652 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1654 static const char *decimal = "0123456789";
1655 static const char *hex = "0123456789abcdef";
1660 * Try matching against the supplied keywords,
1661 * and return -(index+1) if we match one
1663 if (keywords != NULL) {
1664 for (i = 0; *keywords != NULL; ++i) {
1665 if (!strcmp(s, *keywords++))
1670 * Look for a series of no more than "max_vals"
1671 * numeric values separated by commas, in base10,
1672 * or base16 when prefixed with "0x".
1673 * Return a count of how many were found.
1675 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1677 while ((i = stridx(decimal, *++s)) >= 0)
1678 vals[n] = (vals[n] * 10) + i;
1679 if (*s == 'x' && !vals[n]) {
1680 while ((i = stridx(hex, *++s)) >= 0)
1681 vals[n] = (vals[n] * 0x10) + i;
1683 if (++n == max_vals)
1685 if (*s == ',' || *s == ';')
1691 return 0; /* zero = nothing matched */
1694 #ifdef CONFIG_BLK_DEV_PDC4030
1695 static int __initdata probe_pdc4030;
1697 #ifdef CONFIG_BLK_DEV_ALI14XX
1698 static int __initdata probe_ali14xx;
1699 extern int ali14xx_init(void);
1701 #ifdef CONFIG_BLK_DEV_UMC8672
1702 static int __initdata probe_umc8672;
1703 extern int umc8672_init(void);
1705 #ifdef CONFIG_BLK_DEV_DTC2278
1706 static int __initdata probe_dtc2278;
1707 extern int dtc2278_init(void);
1709 #ifdef CONFIG_BLK_DEV_HT6560B
1710 static int __initdata probe_ht6560b;
1711 extern int ht6560b_init(void);
1713 #ifdef CONFIG_BLK_DEV_QD65XX
1714 static int __initdata probe_qd65xx;
1715 extern int qd65xx_init(void);
1718 static int __initdata is_chipset_set[MAX_HWIFS];
1721 * ide_setup() gets called VERY EARLY during initialization,
1722 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1724 * Remember to update Documentation/ide.txt if you change something here.
1726 int __init ide_setup (char *s)
1731 unsigned int hw, unit;
1732 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1733 const char max_hwif = '0' + (MAX_HWIFS - 1);
1736 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1737 return 0; /* driver and not us */
1739 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1742 printk(KERN_INFO "ide_setup: %s", s);
1745 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1746 if (!strcmp(s, "ide=doubler")) {
1747 extern int ide_doubler;
1749 printk(" : Enabled support for IDE doublers\n");
1753 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1755 if (!strcmp(s, "ide=nodma")) {
1756 printk("IDE: Prevented DMA\n");
1761 #ifdef CONFIG_BLK_DEV_IDEPCI
1762 if (!strcmp(s, "ide=reverse")) {
1763 ide_scan_direction = 1;
1764 printk(" : Enabled support for IDE inverse scan order.\n");
1767 #endif /* CONFIG_BLK_DEV_IDEPCI */
1770 * Look for drive options: "hdx="
1772 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1773 const char *hd_words[] = {
1774 "none", "noprobe", "nowerr", "cdrom", "serialize",
1775 "autotune", "noautotune", "stroke", "swapdata", "bswap",
1776 "minus11", "remap", "remap63", "scsi", NULL };
1778 hw = unit / MAX_DRIVES;
1779 unit = unit % MAX_DRIVES;
1780 hwif = &ide_hwifs[hw];
1781 drive = &hwif->drives[unit];
1782 if (strncmp(s + 4, "ide-", 4) == 0) {
1783 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1786 switch (match_parm(&s[3], hd_words, vals, 3)) {
1787 case -1: /* "none" */
1788 case -2: /* "noprobe" */
1791 case -3: /* "nowerr" */
1792 drive->bad_wstat = BAD_R_STAT;
1795 case -4: /* "cdrom" */
1797 drive->media = ide_cdrom;
1800 case -5: /* "serialize" */
1801 printk(" -- USE \"ide%d=serialize\" INSTEAD", hw);
1803 case -6: /* "autotune" */
1804 drive->autotune = IDE_TUNE_AUTO;
1806 case -7: /* "noautotune" */
1807 drive->autotune = IDE_TUNE_NOAUTO;
1809 case -8: /* stroke */
1812 case -9: /* "swapdata" */
1813 case -10: /* "bswap" */
1816 case -12: /* "remap" */
1817 drive->remap_0_to_1 = 1;
1819 case -13: /* "remap63" */
1822 case -14: /* "scsi" */
1825 case 3: /* cyl,head,sect */
1826 drive->media = ide_disk;
1827 drive->cyl = drive->bios_cyl = vals[0];
1828 drive->head = drive->bios_head = vals[1];
1829 drive->sect = drive->bios_sect = vals[2];
1831 drive->forced_geom = 1;
1839 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1842 * Look for bus speed option: "idebus="
1844 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1845 if (match_parm(&s[6], NULL, vals, 1) != 1)
1847 if (vals[0] >= 20 && vals[0] <= 66) {
1848 idebus_parameter = vals[0];
1850 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1854 * Look for interface options: "idex="
1856 if (s[3] >= '0' && s[3] <= max_hwif) {
1858 * Be VERY CAREFUL changing this: note hardcoded indexes below
1859 * (-8, -9, -10) are reserved to ease the hardcoding.
1861 static const char *ide_words[] = {
1862 "noprobe", "serialize", "autotune", "noautotune",
1863 "reset", "dma", "ata66", "minus8", "minus9",
1864 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1865 "dtc2278", "umc8672", "ali14xx", "dc4030", NULL };
1867 hwif = &ide_hwifs[hw];
1868 i = match_parm(&s[4], ide_words, vals, 3);
1871 * Cryptic check to ensure chipset not already set for hwif.
1872 * Note: we can't depend on hwif->chipset here.
1874 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1875 /* chipset already specified */
1876 if (is_chipset_set[hw])
1878 if (i > -18 && i <= -11) {
1879 /* these drivers are for "ide0=" only */
1882 /* chipset already specified for 2nd port */
1883 if (is_chipset_set[hw+1])
1886 is_chipset_set[hw] = 1;
1891 #ifdef CONFIG_BLK_DEV_PDC4030
1892 case -18: /* "dc4030" */
1896 #ifdef CONFIG_BLK_DEV_ALI14XX
1897 case -17: /* "ali14xx" */
1901 #ifdef CONFIG_BLK_DEV_UMC8672
1902 case -16: /* "umc8672" */
1906 #ifdef CONFIG_BLK_DEV_DTC2278
1907 case -15: /* "dtc2278" */
1911 #ifdef CONFIG_BLK_DEV_CMD640
1912 case -14: /* "cmd640_vlb" */
1914 extern int cmd640_vlb; /* flag for cmd640.c */
1919 #ifdef CONFIG_BLK_DEV_HT6560B
1920 case -13: /* "ht6560b" */
1924 #ifdef CONFIG_BLK_DEV_QD65XX
1925 case -12: /* "qd65xx" */
1929 #ifdef CONFIG_BLK_DEV_4DRIVES
1930 case -11: /* "four" drives on one set of ports */
1932 ide_hwif_t *mate = &ide_hwifs[hw^1];
1933 mate->drives[0].select.all ^= 0x20;
1934 mate->drives[1].select.all ^= 0x20;
1935 hwif->chipset = mate->chipset = ide_4drives;
1936 mate->irq = hwif->irq;
1937 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
1940 #endif /* CONFIG_BLK_DEV_4DRIVES */
1941 case -10: /* minus10 */
1942 case -9: /* minus9 */
1943 case -8: /* minus8 */
1945 case -7: /* ata66 */
1946 #ifdef CONFIG_BLK_DEV_IDEPCI
1947 hwif->udma_four = 1;
1955 case -5: /* "reset" */
1958 case -4: /* "noautotune" */
1959 hwif->drives[0].autotune = IDE_TUNE_NOAUTO;
1960 hwif->drives[1].autotune = IDE_TUNE_NOAUTO;
1962 case -3: /* "autotune" */
1963 hwif->drives[0].autotune = IDE_TUNE_AUTO;
1964 hwif->drives[1].autotune = IDE_TUNE_AUTO;
1966 case -2: /* "serialize" */
1968 hwif->mate = &ide_hwifs[hw^1];
1969 hwif->mate->mate = hwif;
1970 hwif->serialized = hwif->mate->serialized = 1;
1973 case -1: /* "noprobe" */
1978 vals[1] = vals[0] + 0x206; /* default ctl */
1979 case 2: /* base,ctl */
1980 vals[2] = 0; /* default irq = probe for it */
1981 case 3: /* base,ctl,irq */
1982 hwif->hw.irq = vals[2];
1983 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
1984 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
1985 hwif->irq = vals[2];
1987 hwif->chipset = ide_forced;
1990 case 0: goto bad_option;
1992 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1997 printk(" -- BAD OPTION\n");
2000 printk("-- NOT SUPPORTED ON ide%d", hw);
2006 extern void pnpide_init(void);
2007 extern void h8300_ide_init(void);
2010 * probe_for_hwifs() finds/initializes "known" IDE interfaces
2012 static void __init probe_for_hwifs (void)
2014 #ifdef CONFIG_BLK_DEV_IDEPCI
2015 ide_scan_pcibus(ide_scan_direction);
2016 #endif /* CONFIG_BLK_DEV_IDEPCI */
2018 #ifdef CONFIG_ETRAX_IDE
2020 extern void init_e100_ide(void);
2023 #endif /* CONFIG_ETRAX_IDE */
2024 #ifdef CONFIG_BLK_DEV_CMD640
2026 extern void ide_probe_for_cmd640x(void);
2027 ide_probe_for_cmd640x();
2029 #endif /* CONFIG_BLK_DEV_CMD640 */
2030 #ifdef CONFIG_BLK_DEV_PDC4030
2032 extern int pdc4030_init(void);
2034 (void)pdc4030_init();
2036 #endif /* CONFIG_BLK_DEV_PDC4030 */
2037 #ifdef CONFIG_BLK_DEV_IDE_PMAC
2039 extern void pmac_ide_probe(void);
2042 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
2043 #ifdef CONFIG_BLK_DEV_GAYLE
2045 extern void gayle_init(void);
2048 #endif /* CONFIG_BLK_DEV_GAYLE */
2049 #ifdef CONFIG_BLK_DEV_FALCON_IDE
2051 extern void falconide_init(void);
2054 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
2055 #ifdef CONFIG_BLK_DEV_MAC_IDE
2057 extern void macide_init(void);
2060 #endif /* CONFIG_BLK_DEV_MAC_IDE */
2061 #ifdef CONFIG_BLK_DEV_Q40IDE
2063 extern void q40ide_init(void);
2066 #endif /* CONFIG_BLK_DEV_Q40IDE */
2067 #ifdef CONFIG_BLK_DEV_BUDDHA
2069 extern void buddha_init(void);
2072 #endif /* CONFIG_BLK_DEV_BUDDHA */
2073 #ifdef CONFIG_BLK_DEV_IDEPNP
2082 * Actually unregister the subdriver. Called with the
2083 * request lock dropped.
2086 static int default_cleanup (ide_drive_t *drive)
2088 return ide_unregister_subdriver(drive);
2091 static ide_startstop_t default_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
2093 ide_end_request(drive, 0, 0);
2097 static int default_end_request (ide_drive_t *drive, int uptodate, int nr_sects)
2099 return ide_end_request(drive, uptodate, nr_sects);
2102 static u8 default_sense (ide_drive_t *drive, const char *msg, u8 stat)
2104 return ide_dump_status(drive, msg, stat);
2107 static ide_startstop_t default_error (ide_drive_t *drive, const char *msg, u8 stat)
2109 return ide_error(drive, msg, stat);
2112 static void default_pre_reset (ide_drive_t *drive)
2116 static sector_t default_capacity (ide_drive_t *drive)
2121 static ide_startstop_t default_special (ide_drive_t *drive)
2123 special_t *s = &drive->special;
2126 drive->mult_req = 0;
2130 static int default_attach (ide_drive_t *drive)
2132 printk(KERN_ERR "%s: does not support hotswap of device class !\n",
2138 static ide_startstop_t default_abort (ide_drive_t *drive, const char *msg)
2140 return ide_abort(drive, msg);
2143 static ide_startstop_t default_start_power_step(ide_drive_t *drive,
2146 rq->pm->pm_step = ide_pm_state_completed;
2150 static void setup_driver_defaults (ide_driver_t *d)
2152 if (d->cleanup == NULL) d->cleanup = default_cleanup;
2153 if (d->do_request == NULL) d->do_request = default_do_request;
2154 if (d->end_request == NULL) d->end_request = default_end_request;
2155 if (d->sense == NULL) d->sense = default_sense;
2156 if (d->error == NULL) d->error = default_error;
2157 if (d->abort == NULL) d->abort = default_abort;
2158 if (d->pre_reset == NULL) d->pre_reset = default_pre_reset;
2159 if (d->capacity == NULL) d->capacity = default_capacity;
2160 if (d->special == NULL) d->special = default_special;
2161 if (d->attach == NULL) d->attach = default_attach;
2162 if (d->start_power_step == NULL)
2163 d->start_power_step = default_start_power_step;
2166 int ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
2168 unsigned long flags;
2170 BUG_ON(!drive->driver);
2172 spin_lock_irqsave(&ide_lock, flags);
2173 if (!drive->present || drive->driver != &idedefault_driver ||
2174 drive->usage || drive->dead) {
2175 spin_unlock_irqrestore(&ide_lock, flags);
2178 drive->driver = driver;
2179 spin_unlock_irqrestore(&ide_lock, flags);
2180 spin_lock(&drives_lock);
2181 list_add_tail(&drive->list, &driver->drives);
2182 spin_unlock(&drives_lock);
2183 // printk(KERN_INFO "%s: attached %s driver.\n", drive->name, driver->name);
2184 if ((drive->autotune == IDE_TUNE_DEFAULT) ||
2185 (drive->autotune == IDE_TUNE_AUTO)) {
2186 /* DMA timings and setup moved to ide-probe.c */
2187 drive->dsc_overlap = (drive->next != drive && driver->supports_dsc_overlap);
2190 drive->suspend_reset = 0;
2191 #ifdef CONFIG_PROC_FS
2192 if (drive->driver != &idedefault_driver) {
2193 ide_add_proc_entries(drive->proc, generic_subdriver_entries, drive);
2194 ide_add_proc_entries(drive->proc, driver->proc, drive);
2200 EXPORT_SYMBOL(ide_register_subdriver);
2202 int ide_unregister_subdriver (ide_drive_t *drive)
2204 unsigned long flags;
2206 down(&ide_setting_sem);
2207 spin_lock_irqsave(&ide_lock, flags);
2208 if (drive->usage || drive->driver == &idedefault_driver || DRIVER(drive)->busy) {
2209 spin_unlock_irqrestore(&ide_lock, flags);
2210 up(&ide_setting_sem);
2213 #ifdef CONFIG_PROC_FS
2214 ide_remove_proc_entries(drive->proc, DRIVER(drive)->proc);
2215 ide_remove_proc_entries(drive->proc, generic_subdriver_entries);
2217 auto_remove_settings(drive);
2218 drive->driver = &idedefault_driver;
2219 spin_unlock_irqrestore(&ide_lock, flags);
2220 up(&ide_setting_sem);
2221 spin_lock(&drives_lock);
2222 list_del_init(&drive->list);
2223 spin_unlock(&drives_lock);
2224 /* drive will be added to &idedefault_driver->drives in ata_attach() */
2228 EXPORT_SYMBOL(ide_unregister_subdriver);
2230 static int ide_drive_remove(struct device * dev)
2232 ide_drive_t * drive = container_of(dev,ide_drive_t,gendev);
2233 DRIVER(drive)->cleanup(drive);
2237 int ide_register_driver(ide_driver_t *driver)
2239 struct list_head list;
2240 struct list_head *list_loop;
2241 struct list_head *tmp_storage;
2243 setup_driver_defaults(driver);
2245 spin_lock(&drivers_lock);
2246 list_add(&driver->drivers, &drivers);
2247 spin_unlock(&drivers_lock);
2249 INIT_LIST_HEAD(&list);
2250 spin_lock(&drives_lock);
2251 list_splice_init(&idedefault_driver.drives, &list);
2252 spin_unlock(&drives_lock);
2254 list_for_each_safe(list_loop, tmp_storage, &list) {
2255 ide_drive_t *drive = container_of(list_loop, ide_drive_t, list);
2256 list_del_init(&drive->list);
2260 driver->gen_driver.name = (char *) driver->name;
2261 driver->gen_driver.bus = &ide_bus_type;
2262 driver->gen_driver.remove = ide_drive_remove;
2263 return driver_register(&driver->gen_driver);
2266 EXPORT_SYMBOL(ide_register_driver);
2268 void ide_unregister_driver(ide_driver_t *driver)
2272 spin_lock(&drivers_lock);
2273 list_del(&driver->drivers);
2274 spin_unlock(&drivers_lock);
2276 driver_unregister(&driver->gen_driver);
2278 while(!list_empty(&driver->drives)) {
2279 drive = list_entry(driver->drives.next, ide_drive_t, list);
2280 if (driver->cleanup(drive)) {
2281 printk(KERN_ERR "%s: cleanup_module() called while still busy\n", drive->name);
2288 EXPORT_SYMBOL(ide_unregister_driver);
2290 struct block_device_operations ide_fops[] = {{
2291 .owner = THIS_MODULE,
2295 EXPORT_SYMBOL(ide_fops);
2301 EXPORT_SYMBOL(ide_lock);
2303 struct bus_type ide_bus_type = {
2305 .suspend = generic_ide_suspend,
2306 .resume = generic_ide_resume,
2310 * This is gets invoked once during initialization, to set *everything* up
2312 int __init ide_init (void)
2314 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
2315 devfs_mk_dir("ide");
2316 system_bus_speed = ide_system_bus_speed();
2318 bus_register(&ide_bus_type);
2322 #ifdef CONFIG_PROC_FS
2323 proc_ide_root = proc_mkdir("ide", 0);
2326 #ifdef CONFIG_BLK_DEV_ALI14XX
2328 (void)ali14xx_init();
2330 #ifdef CONFIG_BLK_DEV_UMC8672
2332 (void)umc8672_init();
2334 #ifdef CONFIG_BLK_DEV_DTC2278
2336 (void)dtc2278_init();
2338 #ifdef CONFIG_BLK_DEV_HT6560B
2340 (void)ht6560b_init();
2342 #ifdef CONFIG_BLK_DEV_QD65XX
2344 (void)qd65xx_init();
2348 /* Probe for special PCI and other "known" interface chipsets. */
2352 #ifdef CONFIG_PROC_FS
2359 char *options = NULL;
2360 MODULE_PARM(options,"s");
2361 MODULE_LICENSE("GPL");
2363 static void __init parse_options (char *line)
2367 if (line == NULL || !*line)
2369 while ((line = next) != NULL) {
2370 if ((next = strchr(line,' ')) != NULL)
2372 if (!ide_setup(line))
2373 printk (KERN_INFO "Unknown option '%s'\n", line);
2377 int init_module (void)
2379 parse_options(options);
2383 void cleanup_module (void)
2387 for (index = 0; index < MAX_HWIFS; ++index) {
2388 ide_unregister(index);
2389 if (ide_hwifs[index].dma_base)
2390 (void) ide_release_dma(&ide_hwifs[index]);
2393 #ifdef CONFIG_PROC_FS
2396 devfs_remove("ide");
2398 bus_unregister(&ide_bus_type);
2403 __setup("", ide_setup);
2405 module_init(ide_init);