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 - guess bus speed
326 * ide_system_bus_speed() returns what we think is the system VESA/PCI
327 * bus speed (in MHz). This is used for calculating interface PIO timings.
328 * The default is 40 for known PCI systems, 50 otherwise.
329 * The "idebus=xx" parameter can be used to override this value.
330 * The actual value to be used is computed/displayed the first time
331 * through. Drivers should only use this as a last resort.
333 * Returns a guessed speed in MHz.
336 int ide_system_bus_speed (void)
338 if (!system_bus_speed) {
339 if (idebus_parameter) {
340 /* user supplied value */
341 system_bus_speed = idebus_parameter;
342 } else if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID, NULL) != NULL) {
343 /* safe default value for PCI */
344 system_bus_speed = 33;
346 /* safe default value for VESA and PCI */
347 system_bus_speed = 50;
349 printk(KERN_INFO "ide: Assuming %dMHz system bus speed "
350 "for PIO modes%s\n", system_bus_speed,
351 idebus_parameter ? "" : "; override with idebus=xx");
353 return system_bus_speed;
357 * current_capacity - drive capacity
358 * @drive: drive to query
360 * Return the current capacity (in sectors) of a drive according to
361 * its current geometry/LBA settings. Empty removables are reported
365 sector_t current_capacity (ide_drive_t *drive)
369 return DRIVER(drive)->capacity(drive);
372 EXPORT_SYMBOL(current_capacity);
375 * ide_dump_status - translate ATA error
376 * @drive: drive the error occured on
377 * @msg: information string
380 * Error reporting, in human readable form (luxurious, but a memory hog).
381 * Combines the drive name, message and status byte to provide a
382 * user understandable explanation of the device error.
385 u8 ide_dump_status (ide_drive_t *drive, const char *msg, u8 stat)
387 ide_hwif_t *hwif = HWIF(drive);
391 local_irq_set(flags);
392 printk(KERN_WARNING "%s: %s: status=0x%02x", drive->name, msg, stat);
394 if (stat & BUSY_STAT) {
397 if (stat & READY_STAT) printk("DriveReady ");
398 if (stat & WRERR_STAT) printk("DeviceFault ");
399 if (stat & SEEK_STAT) printk("SeekComplete ");
400 if (stat & DRQ_STAT) printk("DataRequest ");
401 if (stat & ECC_STAT) printk("CorrectedError ");
402 if (stat & INDEX_STAT) printk("Index ");
403 if (stat & ERR_STAT) printk("Error ");
407 if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
408 err = hwif->INB(IDE_ERROR_REG);
409 printk("%s: %s: error=0x%02x", drive->name, msg, err);
410 if (drive->media == ide_disk) {
412 if (err & ABRT_ERR) printk("DriveStatusError ");
413 if (err & ICRC_ERR) printk("Bad%s ", (err & ABRT_ERR) ? "CRC" : "Sector");
414 if (err & ECC_ERR) printk("UncorrectableError ");
415 if (err & ID_ERR) printk("SectorIdNotFound ");
416 if (err & TRK0_ERR) printk("TrackZeroNotFound ");
417 if (err & MARK_ERR) printk("AddrMarkNotFound ");
419 if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR || (err & (ECC_ERR|ID_ERR|MARK_ERR))) {
420 if ((drive->id->command_set_2 & 0x0400) &&
421 (drive->id->cfs_enable_2 & 0x0400) &&
422 (drive->addressing == 1)) {
425 u32 low = ide_read_24(drive);
426 hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
427 high = ide_read_24(drive);
429 sectors = ((u64)high << 24) | low;
430 printk(", LBAsect=%llu, high=%d, low=%d",
434 u8 cur = hwif->INB(IDE_SELECT_REG);
435 if (cur & 0x40) { /* using LBA? */
436 printk(", LBAsect=%ld", (unsigned long)
438 |(hwif->INB(IDE_HCYL_REG)<<16)
439 |(hwif->INB(IDE_LCYL_REG)<<8)
440 | hwif->INB(IDE_SECTOR_REG));
442 printk(", CHS=%d/%d/%d",
443 (hwif->INB(IDE_HCYL_REG)<<8) +
444 hwif->INB(IDE_LCYL_REG),
446 hwif->INB(IDE_SECTOR_REG));
449 if (HWGROUP(drive) && HWGROUP(drive)->rq)
450 printk(", sector=%llu", (unsigned long long)HWGROUP(drive)->rq->sector);
459 spin_lock(&ide_lock);
462 rq = HWGROUP(drive)->rq;
463 spin_unlock(&ide_lock);
466 if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK)) {
467 char *args = rq->buffer;
470 } else if (rq->flags & REQ_DRIVE_TASKFILE) {
471 ide_task_t *args = rq->special;
473 task_struct_t *tf = (task_struct_t *) args->tfRegister;
474 opcode = tf->command;
478 printk("ide: failed opcode was %x\n", opcode);
481 local_irq_restore(flags);
485 EXPORT_SYMBOL(ide_dump_status);
487 static int ide_open (struct inode * inode, struct file * filp)
493 * drives_lock protects the list of drives, drivers_lock the
494 * list of drivers. Currently nobody takes both at once.
497 static spinlock_t drives_lock = SPIN_LOCK_UNLOCKED;
498 static spinlock_t drivers_lock = SPIN_LOCK_UNLOCKED;
499 static LIST_HEAD(drivers);
501 /* Iterator for the driver list. */
503 static void *m_start(struct seq_file *m, loff_t *pos)
507 spin_lock(&drivers_lock);
508 list_for_each(p, &drivers)
510 return list_entry(p, ide_driver_t, drivers);
514 static void *m_next(struct seq_file *m, void *v, loff_t *pos)
516 struct list_head *p = ((ide_driver_t *)v)->drivers.next;
518 return p==&drivers ? NULL : list_entry(p, ide_driver_t, drivers);
521 static void m_stop(struct seq_file *m, void *v)
523 spin_unlock(&drivers_lock);
526 static int show_driver(struct seq_file *m, void *v)
528 ide_driver_t *driver = v;
529 seq_printf(m, "%s version %s\n", driver->name, driver->version);
533 struct seq_operations ide_drivers_op = {
540 #ifdef CONFIG_PROC_FS
541 struct proc_dir_entry *proc_ide_root;
543 ide_proc_entry_t generic_subdriver_entries[] = {
544 { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
545 { NULL, 0, NULL, NULL }
549 static struct resource* hwif_request_region(ide_hwif_t *hwif,
550 unsigned long addr, int num)
552 struct resource *res = request_region(addr, num, hwif->name);
555 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
556 hwif->name, addr, addr+num-1);
561 * ide_hwif_request_regions - request resources for IDE
562 * @hwif: interface to use
564 * Requests all the needed resources for an interface.
565 * Right now core IDE code does this work which is deeply wrong.
566 * MMIO leaves it to the controller driver,
567 * PIO will migrate this way over time.
570 int ide_hwif_request_regions(ide_hwif_t *hwif)
577 BUG_ON(hwif->mmio == 1);
578 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
579 if (addr && !hwif_request_region(hwif, addr, 1))
580 goto control_region_busy;
582 addr = hwif->io_ports[IDE_DATA_OFFSET];
583 if ((addr | 7) == hwif->io_ports[IDE_STATUS_OFFSET]) {
584 if (!hwif_request_region(hwif, addr, 8))
585 goto data_region_busy;
589 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
590 addr = hwif->io_ports[i];
591 if (!hwif_request_region(hwif, addr, 1)) {
593 release_region(addr, 1);
594 goto data_region_busy;
600 addr = hwif->io_ports[IDE_CONTROL_OFFSET];
602 release_region(addr, 1);
604 /* If any errors are return, we drop the hwif interface. */
609 * ide_hwif_release_regions - free IDE resources
611 * Note that we only release the standard ports,
612 * and do not even try to handle any extra ports
613 * allocated for weird IDE interface chipsets.
615 * Note also that we don't yet handle mmio resources here. More
616 * importantly our caller should be doing this so we need to
617 * restructure this as a helper function for drivers.
620 void ide_hwif_release_regions(ide_hwif_t *hwif)
626 if (hwif->io_ports[IDE_CONTROL_OFFSET])
627 release_region(hwif->io_ports[IDE_CONTROL_OFFSET], 1);
628 if (hwif->straight8) {
629 release_region(hwif->io_ports[IDE_DATA_OFFSET], 8);
632 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
633 if (hwif->io_ports[i])
634 release_region(hwif->io_ports[i], 1);
638 * ide_hwif_restore - restore hwif to template
639 * @hwif: hwif to update
640 * @tmp_hwif: template
642 * Restore hwif to a previous state by copying most settngs
646 static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
648 hwif->hwgroup = tmp_hwif->hwgroup;
650 hwif->gendev.parent = tmp_hwif->gendev.parent;
652 hwif->proc = tmp_hwif->proc;
654 hwif->major = tmp_hwif->major;
655 hwif->straight8 = tmp_hwif->straight8;
656 hwif->bus_state = tmp_hwif->bus_state;
658 hwif->atapi_dma = tmp_hwif->atapi_dma;
659 hwif->ultra_mask = tmp_hwif->ultra_mask;
660 hwif->mwdma_mask = tmp_hwif->mwdma_mask;
661 hwif->swdma_mask = tmp_hwif->swdma_mask;
663 hwif->chipset = tmp_hwif->chipset;
664 hwif->hold = tmp_hwif->hold;
666 #ifdef CONFIG_BLK_DEV_IDEPCI
667 hwif->pci_dev = tmp_hwif->pci_dev;
668 hwif->cds = tmp_hwif->cds;
671 hwif->identify = tmp_hwif->identify;
672 hwif->tuneproc = tmp_hwif->tuneproc;
673 hwif->speedproc = tmp_hwif->speedproc;
674 hwif->selectproc = tmp_hwif->selectproc;
675 hwif->reset_poll = tmp_hwif->reset_poll;
676 hwif->pre_reset = tmp_hwif->pre_reset;
677 hwif->resetproc = tmp_hwif->resetproc;
678 hwif->intrproc = tmp_hwif->intrproc;
679 hwif->maskproc = tmp_hwif->maskproc;
680 hwif->quirkproc = tmp_hwif->quirkproc;
681 hwif->busproc = tmp_hwif->busproc;
683 hwif->ata_input_data = tmp_hwif->ata_input_data;
684 hwif->ata_output_data = tmp_hwif->ata_output_data;
685 hwif->atapi_input_bytes = tmp_hwif->atapi_input_bytes;
686 hwif->atapi_output_bytes = tmp_hwif->atapi_output_bytes;
688 hwif->ide_dma_read = tmp_hwif->ide_dma_read;
689 hwif->ide_dma_write = tmp_hwif->ide_dma_write;
690 hwif->ide_dma_begin = tmp_hwif->ide_dma_begin;
691 hwif->ide_dma_end = tmp_hwif->ide_dma_end;
692 hwif->ide_dma_check = tmp_hwif->ide_dma_check;
693 hwif->ide_dma_on = tmp_hwif->ide_dma_on;
694 hwif->ide_dma_off_quietly = tmp_hwif->ide_dma_off_quietly;
695 hwif->ide_dma_test_irq = tmp_hwif->ide_dma_test_irq;
696 hwif->ide_dma_host_on = tmp_hwif->ide_dma_host_on;
697 hwif->ide_dma_host_off = tmp_hwif->ide_dma_host_off;
698 hwif->ide_dma_verbose = tmp_hwif->ide_dma_verbose;
699 hwif->ide_dma_lostirq = tmp_hwif->ide_dma_lostirq;
700 hwif->ide_dma_timeout = tmp_hwif->ide_dma_timeout;
702 hwif->OUTB = tmp_hwif->OUTB;
703 hwif->OUTBSYNC = tmp_hwif->OUTBSYNC;
704 hwif->OUTW = tmp_hwif->OUTW;
705 hwif->OUTL = tmp_hwif->OUTL;
706 hwif->OUTSW = tmp_hwif->OUTSW;
707 hwif->OUTSL = tmp_hwif->OUTSL;
709 hwif->INB = tmp_hwif->INB;
710 hwif->INW = tmp_hwif->INW;
711 hwif->INL = tmp_hwif->INL;
712 hwif->INSW = tmp_hwif->INSW;
713 hwif->INSL = tmp_hwif->INSL;
715 hwif->mmio = tmp_hwif->mmio;
716 hwif->rqsize = tmp_hwif->rqsize;
717 hwif->no_lba48 = tmp_hwif->no_lba48;
719 #ifndef CONFIG_BLK_DEV_IDECS
720 hwif->irq = tmp_hwif->irq;
723 hwif->dma_base = tmp_hwif->dma_base;
724 hwif->dma_master = tmp_hwif->dma_master;
725 hwif->dma_command = tmp_hwif->dma_command;
726 hwif->dma_vendor1 = tmp_hwif->dma_vendor1;
727 hwif->dma_status = tmp_hwif->dma_status;
728 hwif->dma_vendor3 = tmp_hwif->dma_vendor3;
729 hwif->dma_prdtable = tmp_hwif->dma_prdtable;
731 hwif->dma_extra = tmp_hwif->dma_extra;
732 hwif->config_data = tmp_hwif->config_data;
733 hwif->select_data = tmp_hwif->select_data;
734 hwif->autodma = tmp_hwif->autodma;
735 hwif->udma_four = tmp_hwif->udma_four;
736 hwif->no_dsc = tmp_hwif->no_dsc;
738 hwif->hwif_data = tmp_hwif->hwif_data;
742 * ide_unregister - free an ide interface
743 * @index: index of interface (will change soon to a pointer)
745 * Perform the final unregister of an IDE interface. At the moment
746 * we don't refcount interfaces so this will also get split up.
749 * The caller must not hold the IDE locks
750 * The drive present/vanishing is not yet properly locked
751 * Take care with the callbacks. These have been split to avoid
752 * deadlocking the IDE layer. The shutdown callback is called
753 * before we take the lock and free resources. It is up to the
754 * caller to be sure there is no pending I/O here, and that
755 * the interfce will not be reopened (present/vanishing locking
756 * isnt yet done btw). After we commit to the final kill we
757 * call the cleanup callback with the ide locks held.
759 * Unregister restores the hwif structures to the default state.
760 * This is raving bonkers.
763 void ide_unregister(unsigned int index)
766 ide_hwif_t *hwif, *g;
767 static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */
768 ide_hwgroup_t *hwgroup;
769 int irq_count = 0, unit, i;
771 BUG_ON(index >= MAX_HWIFS);
773 BUG_ON(in_interrupt());
774 BUG_ON(irqs_disabled());
776 spin_lock_irq(&ide_lock);
777 hwif = &ide_hwifs[index];
780 for (unit = 0; unit < MAX_DRIVES; ++unit) {
781 drive = &hwif->drives[unit];
784 if (drive->usage || DRIVER(drive)->busy)
790 spin_unlock_irq(&ide_lock);
792 for (unit = 0; unit < MAX_DRIVES; ++unit) {
793 drive = &hwif->drives[unit];
796 DRIVER(drive)->cleanup(drive);
799 #ifdef CONFIG_PROC_FS
800 destroy_proc_ide_drives(hwif);
803 hwgroup = hwif->hwgroup;
805 * free the irq if we were the only hwif using it
809 if (g->irq == hwif->irq)
812 } while (g != hwgroup->hwif);
814 free_irq(hwif->irq, hwgroup);
816 spin_lock_irq(&ide_lock);
818 * Note that we only release the standard ports,
819 * and do not even try to handle any extra ports
820 * allocated for weird IDE interface chipsets.
822 ide_hwif_release_regions(hwif);
825 * Remove us from the hwgroup, and free
826 * the hwgroup if we were the only member
828 for (i = 0; i < MAX_DRIVES; ++i) {
829 drive = &hwif->drives[i];
830 if (drive->devfs_name[0] != '\0') {
831 devfs_remove(drive->devfs_name);
832 drive->devfs_name[0] = '\0';
836 if (drive == drive->next) {
837 /* special case: last drive from hwgroup. */
838 BUG_ON(hwgroup->drive != drive);
839 hwgroup->drive = NULL;
843 walk = hwgroup->drive;
844 while (walk->next != drive)
846 walk->next = drive->next;
847 if (hwgroup->drive == drive) {
848 hwgroup->drive = drive->next;
849 hwgroup->hwif = HWIF(hwgroup->drive);
852 BUG_ON(hwgroup->drive == drive);
853 if (drive->id != NULL) {
858 /* Messed up locking ... */
859 spin_unlock_irq(&ide_lock);
860 blk_cleanup_queue(drive->queue);
861 device_unregister(&drive->gendev);
862 down(&drive->gendev_rel_sem);
863 spin_lock_irq(&ide_lock);
866 if (hwif->next == hwif) {
867 BUG_ON(hwgroup->hwif != hwif);
870 /* There is another interface in hwgroup.
871 * Unlink us, and set hwgroup->drive and ->hwif to
875 while (g->next != hwif)
877 g->next = hwif->next;
878 if (hwgroup->hwif == hwif) {
879 /* Chose a random hwif for hwgroup->hwif.
880 * It's guaranteed that there are no drives
881 * left in the hwgroup.
883 BUG_ON(hwgroup->drive != NULL);
886 BUG_ON(hwgroup->hwif == hwif);
889 /* More messed up locking ... */
890 spin_unlock_irq(&ide_lock);
891 device_unregister(&hwif->gendev);
892 down(&hwif->gendev_rel_sem);
895 * Remove us from the kernel's knowledge
897 blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
898 for (i = 0; i < MAX_DRIVES; i++) {
899 struct gendisk *disk = hwif->drives[i].disk;
900 hwif->drives[i].disk = NULL;
903 unregister_blkdev(hwif->major, hwif->name);
904 spin_lock_irq(&ide_lock);
906 if (hwif->dma_base) {
907 (void) ide_release_dma(hwif);
910 hwif->dma_master = 0;
911 hwif->dma_command = 0;
912 hwif->dma_vendor1 = 0;
913 hwif->dma_status = 0;
914 hwif->dma_vendor3 = 0;
915 hwif->dma_prdtable = 0;
918 /* copy original settings */
921 /* restore hwif data to pristine status */
922 init_hwif_data(hwif, index);
923 init_hwif_default(hwif, index);
925 ide_hwif_restore(hwif, &tmp_hwif);
928 spin_unlock_irq(&ide_lock);
932 EXPORT_SYMBOL(ide_unregister);
936 * ide_setup_ports - set up IDE interface ports
937 * @hw: register descriptions
938 * @base: base register
939 * @offsets: table of register offsets
940 * @ctrl: control register
942 * @irq: interrupt lie
944 * Setup hw_regs_t structure described by parameters. You
945 * may set up the hw structure yourself OR use this routine to
946 * do it for you. This is basically a helper
950 void ide_setup_ports ( hw_regs_t *hw,
951 unsigned long base, int *offsets,
952 unsigned long ctrl, unsigned long intr,
953 ide_ack_intr_t *ack_intr,
955 * ide_io_ops_t *iops,
961 for (i = 0; i < IDE_NR_PORTS; i++) {
962 if (offsets[i] == -1) {
964 case IDE_CONTROL_OFFSET:
965 hw->io_ports[i] = ctrl;
967 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
969 hw->io_ports[i] = intr;
971 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
977 hw->io_ports[i] = base + offsets[i];
982 hw->ack_intr = ack_intr;
989 * ide_register_hw - register IDE interface
990 * @hw: hardware registers
991 * @hwifp: pointer to returned hwif
993 * Register an IDE interface, specifying exactly the registers etc.
994 * Set init=1 iff calling before probes have taken place.
996 * Returns -1 on error.
999 int ide_register_hw (hw_regs_t *hw, ide_hwif_t **hwifp)
1001 int index, retry = 1;
1005 for (index = 0; index < MAX_HWIFS; ++index) {
1006 hwif = &ide_hwifs[index];
1007 if (hwif->hw.io_ports[IDE_DATA_OFFSET] == hw->io_ports[IDE_DATA_OFFSET])
1010 for (index = 0; index < MAX_HWIFS; ++index) {
1011 hwif = &ide_hwifs[index];
1014 if ((!hwif->present && !hwif->mate && !initializing) ||
1015 (!hwif->hw.io_ports[IDE_DATA_OFFSET] && initializing))
1018 for (index = 0; index < MAX_HWIFS; index++)
1019 ide_unregister(index);
1024 ide_unregister(index);
1025 else if (!hwif->hold) {
1026 init_hwif_data(hwif, index);
1027 init_hwif_default(hwif, index);
1031 memcpy(&hwif->hw, hw, sizeof(*hw));
1032 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports));
1033 hwif->irq = hw->irq;
1035 hwif->chipset = hw->chipset;
1037 if (!initializing) {
1038 probe_hwif_init(hwif);
1039 create_proc_ide_interfaces();
1045 return (initializing || hwif->present) ? index : -1;
1048 EXPORT_SYMBOL(ide_register_hw);
1051 * Locks for IDE setting functionality
1054 DECLARE_MUTEX(ide_setting_sem);
1057 * ide_add_setting - add an ide setting option
1058 * @drive: drive to use
1059 * @name: setting name
1060 * @rw: true if the function is read write
1061 * @read_ioctl: function to call on read
1062 * @write_ioctl: function to call on write
1063 * @data_type: type of data
1064 * @min: range minimum
1065 * @max: range maximum
1066 * @mul_factor: multiplication scale
1067 * @div_factor: divison scale
1068 * @data: private data field
1071 * Removes the setting named from the device if it is present.
1072 * The function takes the settings_lock to protect against
1073 * parallel changes. This function must not be called from IRQ
1074 * context. Returns 0 on success or -1 on failure.
1076 * BUGS: This code is seriously over-engineered. There is also
1077 * magic about how the driver specific features are setup. If
1078 * a driver is attached we assume the driver settings are auto
1082 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)
1084 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
1086 down(&ide_setting_sem);
1087 while ((*p) && strcmp((*p)->name, name) < 0)
1089 if ((setting = kmalloc(sizeof(*setting), GFP_KERNEL)) == NULL)
1091 memset(setting, 0, sizeof(*setting));
1092 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL)
1094 strcpy(setting->name, name);
1096 setting->read_ioctl = read_ioctl;
1097 setting->write_ioctl = write_ioctl;
1098 setting->data_type = data_type;
1101 setting->mul_factor = mul_factor;
1102 setting->div_factor = div_factor;
1103 setting->data = data;
1107 if (drive->driver != &idedefault_driver)
1108 setting->auto_remove = 1;
1110 up(&ide_setting_sem);
1113 up(&ide_setting_sem);
1119 EXPORT_SYMBOL(ide_add_setting);
1122 * __ide_remove_setting - remove an ide setting option
1123 * @drive: drive to use
1124 * @name: setting name
1126 * Removes the setting named from the device if it is present.
1127 * The caller must hold the setting semaphore.
1130 static void __ide_remove_setting (ide_drive_t *drive, char *name)
1132 ide_settings_t **p, *setting;
1134 p = (ide_settings_t **) &drive->settings;
1136 while ((*p) && strcmp((*p)->name, name))
1138 if ((setting = (*p)) == NULL)
1141 (*p) = setting->next;
1143 kfree(setting->name);
1148 * ide_find_setting_by_ioctl - find a drive specific ioctl
1149 * @drive: drive to scan
1150 * @cmd: ioctl command to handle
1152 * Scan's the device setting table for a matching entry and returns
1153 * this or NULL if no entry is found. The caller must hold the
1157 static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd)
1159 ide_settings_t *setting = drive->settings;
1162 if (setting->read_ioctl == cmd || setting->write_ioctl == cmd)
1164 setting = setting->next;
1171 * ide_find_setting_by_name - find a drive specific setting
1172 * @drive: drive to scan
1173 * @name: setting name
1175 * Scan's the device setting table for a matching entry and returns
1176 * this or NULL if no entry is found. The caller must hold the
1180 ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name)
1182 ide_settings_t *setting = drive->settings;
1185 if (strcmp(setting->name, name) == 0)
1187 setting = setting->next;
1193 * auto_remove_settings - remove driver specific settings
1196 * Automatically remove all the driver specific settings for this
1197 * drive. This function may sleep and must not be called from IRQ
1198 * context. The caller must hold ide_setting_sem.
1201 static void auto_remove_settings (ide_drive_t *drive)
1203 ide_settings_t *setting;
1205 setting = drive->settings;
1207 if (setting->auto_remove) {
1208 __ide_remove_setting(drive, setting->name);
1211 setting = setting->next;
1216 * ide_read_setting - read an IDE setting
1217 * @drive: drive to read from
1218 * @setting: drive setting
1220 * Read a drive setting and return the value. The caller
1221 * must hold the ide_setting_sem when making this call.
1223 * BUGS: the data return and error are the same return value
1224 * so an error -EINVAL and true return of the same value cannot
1228 int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting)
1231 unsigned long flags;
1233 if ((setting->rw & SETTING_READ)) {
1234 spin_lock_irqsave(&ide_lock, flags);
1235 switch(setting->data_type) {
1237 val = *((u8 *) setting->data);
1240 val = *((u16 *) setting->data);
1244 val = *((u32 *) setting->data);
1247 spin_unlock_irqrestore(&ide_lock, flags);
1253 * ide_spin_wait_hwgroup - wait for group
1254 * @drive: drive in the group
1256 * Wait for an IDE device group to go non busy and then return
1257 * holding the ide_lock which guards the hwgroup->busy status
1258 * and right to use it.
1261 int ide_spin_wait_hwgroup (ide_drive_t *drive)
1263 ide_hwgroup_t *hwgroup = HWGROUP(drive);
1264 unsigned long timeout = jiffies + (3 * HZ);
1266 spin_lock_irq(&ide_lock);
1268 while (hwgroup->busy) {
1269 unsigned long lflags;
1270 spin_unlock_irq(&ide_lock);
1271 local_irq_set(lflags);
1272 if (time_after(jiffies, timeout)) {
1273 local_irq_restore(lflags);
1274 printk(KERN_ERR "%s: channel busy\n", drive->name);
1277 local_irq_restore(lflags);
1278 spin_lock_irq(&ide_lock);
1283 EXPORT_SYMBOL(ide_spin_wait_hwgroup);
1286 * ide_write_setting - read an IDE setting
1287 * @drive: drive to read from
1288 * @setting: drive setting
1291 * Write a drive setting if it is possible. The caller
1292 * must hold the ide_setting_sem when making this call.
1294 * BUGS: the data return and error are the same return value
1295 * so an error -EINVAL and true return of the same value cannot
1298 * FIXME: This should be changed to enqueue a special request
1299 * to the driver to change settings, and then wait on a sema for completion.
1300 * The current scheme of polling is kludgy, though safe enough.
1303 int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val)
1308 if (!capable(CAP_SYS_ADMIN))
1310 if (!(setting->rw & SETTING_WRITE))
1312 if (val < setting->min || val > setting->max)
1315 return setting->set(drive, val);
1316 if (ide_spin_wait_hwgroup(drive))
1318 switch (setting->data_type) {
1320 *((u8 *) setting->data) = val;
1323 *((u16 *) setting->data) = val;
1326 *((u32 *) setting->data) = val;
1329 p = (u32 *) setting->data;
1330 for (i = 0; i < 1 << PARTN_BITS; i++, p++)
1334 spin_unlock_irq(&ide_lock);
1338 static int set_io_32bit(ide_drive_t *drive, int arg)
1340 drive->io_32bit = arg;
1341 #ifdef CONFIG_BLK_DEV_DTC2278
1342 if (HWIF(drive)->chipset == ide_dtc2278)
1343 HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
1344 #endif /* CONFIG_BLK_DEV_DTC2278 */
1348 static int set_using_dma (ide_drive_t *drive, int arg)
1350 #ifdef CONFIG_BLK_DEV_IDEDMA
1351 if (!drive->id || !(drive->id->capability & 1))
1353 if (HWIF(drive)->ide_dma_check == NULL)
1356 if (HWIF(drive)->ide_dma_check(drive)) return -EIO;
1357 if (HWIF(drive)->ide_dma_on(drive)) return -EIO;
1359 if (__ide_dma_off(drive))
1368 static int set_pio_mode (ide_drive_t *drive, int arg)
1372 if (!HWIF(drive)->tuneproc)
1374 if (drive->special.b.set_tune)
1376 ide_init_drive_cmd(&rq);
1377 drive->tune_req = (u8) arg;
1378 drive->special.b.set_tune = 1;
1379 (void) ide_do_drive_cmd(drive, &rq, ide_wait);
1383 static int set_xfer_rate (ide_drive_t *drive, int arg)
1385 int err = ide_wait_cmd(drive,
1386 WIN_SETFEATURES, (u8) arg,
1387 SETFEATURES_XFER, 0, NULL);
1390 ide_set_xfer_rate(drive, (u8) arg);
1391 ide_driveid_update(drive);
1397 * ide_add_generic_settings - generic ide settings
1398 * @drive: drive being configured
1400 * Add the generic parts of the system settings to the /proc files and
1401 * ioctls for this IDE device. The caller must not be holding the
1405 void ide_add_generic_settings (ide_drive_t *drive)
1408 * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function
1410 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);
1411 ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL);
1412 ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL);
1413 ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode);
1414 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);
1415 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);
1416 ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL);
1417 ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate);
1418 ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL);
1422 * system_bus_clock - clock guess
1424 * External version of the bus clock guess used by very old IDE drivers
1425 * for things like VLB timings. Should not be used.
1428 int system_bus_clock (void)
1430 return((int) ((!system_bus_speed) ? ide_system_bus_speed() : system_bus_speed ));
1433 EXPORT_SYMBOL(system_bus_clock);
1436 * Locking is badly broken here - since way back. That sucker is
1437 * root-only, but that's not an excuse... The real question is what
1438 * exclusion rules do we want here.
1440 int ide_replace_subdriver (ide_drive_t *drive, const char *driver)
1442 if (!drive->present || drive->usage || drive->dead)
1444 if (DRIVER(drive)->cleanup(drive))
1446 strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
1447 if (ata_attach(drive)) {
1448 spin_lock(&drives_lock);
1449 list_del_init(&drive->list);
1450 spin_unlock(&drives_lock);
1451 drive->driver_req[0] = 0;
1454 drive->driver_req[0] = 0;
1456 if (DRIVER(drive)!= &idedefault_driver && !strcmp(DRIVER(drive)->name, driver))
1463 * ata_attach - attach an ATA/ATAPI device
1464 * @drive: drive to attach
1466 * Takes a drive that is as yet not assigned to any midlayer IDE
1467 * driver (or is assigned to the default driver) and figures out
1468 * which driver would like to own it. If nobody claims the drive
1469 * then it is automatically attached to the default driver used for
1470 * unclaimed objects.
1472 * A return of zero indicates attachment to a driver, of one
1473 * attachment to the default driver.
1475 * Takes drivers_lock.
1478 int ata_attach(ide_drive_t *drive)
1480 struct list_head *p;
1481 spin_lock(&drivers_lock);
1482 list_for_each(p, &drivers) {
1483 ide_driver_t *driver = list_entry(p, ide_driver_t, drivers);
1484 if (!try_module_get(driver->owner))
1486 spin_unlock(&drivers_lock);
1487 if (driver->attach(drive) == 0) {
1488 module_put(driver->owner);
1489 drive->gendev.driver = &driver->gen_driver;
1492 spin_lock(&drivers_lock);
1493 module_put(driver->owner);
1495 drive->gendev.driver = &idedefault_driver.gen_driver;
1496 spin_unlock(&drivers_lock);
1497 if(idedefault_driver.attach(drive) != 0)
1498 panic("ide: default attach failed");
1502 static int generic_ide_suspend(struct device *dev, u32 state)
1504 ide_drive_t *drive = dev->driver_data;
1506 struct request_pm_state rqpm;
1509 memset(&rq, 0, sizeof(rq));
1510 memset(&rqpm, 0, sizeof(rqpm));
1511 memset(&args, 0, sizeof(args));
1512 rq.flags = REQ_PM_SUSPEND;
1515 rqpm.pm_step = ide_pm_state_start_suspend;
1516 rqpm.pm_state = state;
1518 return ide_do_drive_cmd(drive, &rq, ide_wait);
1521 static int generic_ide_resume(struct device *dev)
1523 ide_drive_t *drive = dev->driver_data;
1525 struct request_pm_state rqpm;
1528 memset(&rq, 0, sizeof(rq));
1529 memset(&rqpm, 0, sizeof(rqpm));
1530 memset(&args, 0, sizeof(args));
1531 rq.flags = REQ_PM_RESUME;
1534 rqpm.pm_step = ide_pm_state_start_resume;
1537 return ide_do_drive_cmd(drive, &rq, ide_head_wait);
1540 int generic_ide_ioctl(struct file *file, struct block_device *bdev,
1541 unsigned int cmd, unsigned long arg)
1543 ide_drive_t *drive = bdev->bd_disk->private_data;
1544 ide_settings_t *setting;
1546 void __user *p = (void __user *)arg;
1548 down(&ide_setting_sem);
1549 if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) {
1550 if (cmd == setting->read_ioctl) {
1551 err = ide_read_setting(drive, setting);
1552 up(&ide_setting_sem);
1553 return err >= 0 ? put_user(err, (long __user *)arg) : err;
1555 if (bdev != bdev->bd_contains)
1558 err = ide_write_setting(drive, setting, arg);
1559 up(&ide_setting_sem);
1563 up(&ide_setting_sem);
1568 struct hd_geometry geom;
1569 if (!p || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL;
1570 geom.heads = drive->bios_head;
1571 geom.sectors = drive->bios_sect;
1572 geom.cylinders = (u16)drive->bios_cyl; /* truncate */
1573 geom.start = get_start_sect(bdev);
1574 if (copy_to_user(p, &geom, sizeof(struct hd_geometry)))
1579 case HDIO_OBSOLETE_IDENTITY:
1580 case HDIO_GET_IDENTITY:
1581 if (bdev != bdev->bd_contains)
1583 if (drive->id_read == 0)
1585 if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
1590 return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
1591 drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
1592 drive->nice0 << IDE_NICE_0 |
1593 drive->nice1 << IDE_NICE_1 |
1594 drive->nice2 << IDE_NICE_2,
1595 (long __user *) arg);
1597 #ifdef CONFIG_IDE_TASK_IOCTL
1598 case HDIO_DRIVE_TASKFILE:
1599 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
1601 switch(drive->media) {
1603 return ide_taskfile_ioctl(drive, cmd, arg);
1607 #endif /* CONFIG_IDE_TASK_IOCTL */
1609 case HDIO_DRIVE_CMD:
1610 if (!capable(CAP_SYS_RAWIO))
1612 return ide_cmd_ioctl(drive, cmd, arg);
1614 case HDIO_DRIVE_TASK:
1615 if (!capable(CAP_SYS_RAWIO))
1617 return ide_task_ioctl(drive, cmd, arg);
1619 case HDIO_SCAN_HWIF:
1623 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1624 if (copy_from_user(args, p, 3 * sizeof(int)))
1626 memset(&hw, 0, sizeof(hw));
1627 ide_init_hwif_ports(&hw, (unsigned long) args[0],
1628 (unsigned long) args[1], NULL);
1630 if (ide_register_hw(&hw, NULL) == -1)
1634 case HDIO_UNREGISTER_HWIF:
1635 if (!capable(CAP_SYS_RAWIO)) return -EACCES;
1636 /* (arg > MAX_HWIFS) checked in function */
1637 ide_unregister(arg);
1640 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1641 if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
1643 drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
1644 if (drive->dsc_overlap && !DRIVER(drive)->supports_dsc_overlap) {
1645 drive->dsc_overlap = 0;
1648 drive->nice1 = (arg >> IDE_NICE_1) & 1;
1650 case HDIO_DRIVE_RESET:
1652 unsigned long flags;
1653 if (!capable(CAP_SYS_ADMIN)) return -EACCES;
1656 * Abort the current command on the
1657 * group if there is one, taking
1658 * care not to allow anything else
1659 * to be queued and to die on the
1660 * spot if we miss one somehow
1663 spin_lock_irqsave(&ide_lock, flags);
1665 DRIVER(drive)->abort(drive, "drive reset");
1666 if(HWGROUP(drive)->handler)
1669 /* Ensure nothing gets queued after we
1670 drop the lock. Reset will clear the busy */
1672 HWGROUP(drive)->busy = 1;
1673 spin_unlock_irqrestore(&ide_lock, flags);
1674 (void) ide_do_reset(drive);
1675 if (drive->suspend_reset) {
1677 * APM WAKE UP todo !!
1678 * int nogoodpower = 1;
1679 * while(nogoodpower) {
1680 * check_power1() or check_power2()
1683 * HWIF(drive)->multiproc(drive);
1685 return ioctl_by_bdev(bdev, BLKRRPART, 0);
1691 case CDROMCLOSETRAY:
1692 return scsi_cmd_ioctl(file, bdev->bd_disk, cmd, p);
1694 case HDIO_GET_BUSSTATE:
1695 if (!capable(CAP_SYS_ADMIN))
1697 if (put_user(HWIF(drive)->bus_state, (long __user *)arg))
1701 case HDIO_SET_BUSSTATE:
1702 if (!capable(CAP_SYS_ADMIN))
1704 if (HWIF(drive)->busproc)
1705 return HWIF(drive)->busproc(drive, (int)arg);
1712 EXPORT_SYMBOL(generic_ide_ioctl);
1715 * stridx() returns the offset of c within s,
1716 * or -1 if c is '\0' or not found within s.
1718 static int __init stridx (const char *s, char c)
1720 char *i = strchr(s, c);
1721 return (i && c) ? i - s : -1;
1725 * match_parm() does parsing for ide_setup():
1727 * 1. the first char of s must be '='.
1728 * 2. if the remainder matches one of the supplied keywords,
1729 * the index (1 based) of the keyword is negated and returned.
1730 * 3. if the remainder is a series of no more than max_vals numbers
1731 * separated by commas, the numbers are saved in vals[] and a
1732 * count of how many were saved is returned. Base10 is assumed,
1733 * and base16 is allowed when prefixed with "0x".
1734 * 4. otherwise, zero is returned.
1736 static int __init match_parm (char *s, const char *keywords[], int vals[], int max_vals)
1738 static const char *decimal = "0123456789";
1739 static const char *hex = "0123456789abcdef";
1744 * Try matching against the supplied keywords,
1745 * and return -(index+1) if we match one
1747 if (keywords != NULL) {
1748 for (i = 0; *keywords != NULL; ++i) {
1749 if (!strcmp(s, *keywords++))
1754 * Look for a series of no more than "max_vals"
1755 * numeric values separated by commas, in base10,
1756 * or base16 when prefixed with "0x".
1757 * Return a count of how many were found.
1759 for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
1761 while ((i = stridx(decimal, *++s)) >= 0)
1762 vals[n] = (vals[n] * 10) + i;
1763 if (*s == 'x' && !vals[n]) {
1764 while ((i = stridx(hex, *++s)) >= 0)
1765 vals[n] = (vals[n] * 0x10) + i;
1767 if (++n == max_vals)
1769 if (*s == ',' || *s == ';')
1775 return 0; /* zero = nothing matched */
1778 #ifdef CONFIG_BLK_DEV_PDC4030
1779 static int __initdata probe_pdc4030;
1781 #ifdef CONFIG_BLK_DEV_ALI14XX
1782 static int __initdata probe_ali14xx;
1783 extern int ali14xx_init(void);
1785 #ifdef CONFIG_BLK_DEV_UMC8672
1786 static int __initdata probe_umc8672;
1787 extern int umc8672_init(void);
1789 #ifdef CONFIG_BLK_DEV_DTC2278
1790 static int __initdata probe_dtc2278;
1791 extern int dtc2278_init(void);
1793 #ifdef CONFIG_BLK_DEV_HT6560B
1794 static int __initdata probe_ht6560b;
1795 extern int ht6560b_init(void);
1797 #ifdef CONFIG_BLK_DEV_QD65XX
1798 static int __initdata probe_qd65xx;
1799 extern int qd65xx_init(void);
1802 static int __initdata is_chipset_set[MAX_HWIFS];
1805 * ide_setup() gets called VERY EARLY during initialization,
1806 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1808 * Remember to update Documentation/ide.txt if you change something here.
1810 int __init ide_setup (char *s)
1815 unsigned int hw, unit;
1816 const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
1817 const char max_hwif = '0' + (MAX_HWIFS - 1);
1820 if (strncmp(s,"hd",2) == 0 && s[2] == '=') /* hd= is for hd.c */
1821 return 0; /* driver and not us */
1823 if (strncmp(s,"ide",3) && strncmp(s,"idebus",6) && strncmp(s,"hd",2))
1826 printk(KERN_INFO "ide_setup: %s", s);
1829 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1830 if (!strcmp(s, "ide=doubler")) {
1831 extern int ide_doubler;
1833 printk(" : Enabled support for IDE doublers\n");
1837 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1839 if (!strcmp(s, "ide=nodma")) {
1840 printk("IDE: Prevented DMA\n");
1845 #ifdef CONFIG_BLK_DEV_IDEPCI
1846 if (!strcmp(s, "ide=reverse")) {
1847 ide_scan_direction = 1;
1848 printk(" : Enabled support for IDE inverse scan order.\n");
1851 #endif /* CONFIG_BLK_DEV_IDEPCI */
1854 * Look for drive options: "hdx="
1856 if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
1857 const char *hd_words[] = {
1858 "none", "noprobe", "nowerr", "cdrom", "serialize",
1859 "autotune", "noautotune", "stroke", "swapdata", "bswap",
1860 "minus11", "remap", "remap63", "scsi", NULL };
1862 hw = unit / MAX_DRIVES;
1863 unit = unit % MAX_DRIVES;
1864 hwif = &ide_hwifs[hw];
1865 drive = &hwif->drives[unit];
1866 if (strncmp(s + 4, "ide-", 4) == 0) {
1867 strlcpy(drive->driver_req, s + 4, sizeof(drive->driver_req));
1870 switch (match_parm(&s[3], hd_words, vals, 3)) {
1871 case -1: /* "none" */
1872 case -2: /* "noprobe" */
1875 case -3: /* "nowerr" */
1876 drive->bad_wstat = BAD_R_STAT;
1879 case -4: /* "cdrom" */
1881 drive->media = ide_cdrom;
1884 case -5: /* "serialize" */
1885 printk(" -- USE \"ide%d=serialize\" INSTEAD", hw);
1887 case -6: /* "autotune" */
1888 drive->autotune = IDE_TUNE_AUTO;
1890 case -7: /* "noautotune" */
1891 drive->autotune = IDE_TUNE_NOAUTO;
1893 case -8: /* stroke */
1896 case -9: /* "swapdata" */
1897 case -10: /* "bswap" */
1900 case -12: /* "remap" */
1901 drive->remap_0_to_1 = 1;
1903 case -13: /* "remap63" */
1906 case -14: /* "scsi" */
1909 case 3: /* cyl,head,sect */
1910 drive->media = ide_disk;
1911 drive->cyl = drive->bios_cyl = vals[0];
1912 drive->head = drive->bios_head = vals[1];
1913 drive->sect = drive->bios_sect = vals[2];
1915 drive->forced_geom = 1;
1923 if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
1926 * Look for bus speed option: "idebus="
1928 if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
1929 if (match_parm(&s[6], NULL, vals, 1) != 1)
1931 if (vals[0] >= 20 && vals[0] <= 66) {
1932 idebus_parameter = vals[0];
1934 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1938 * Look for interface options: "idex="
1940 if (s[3] >= '0' && s[3] <= max_hwif) {
1942 * Be VERY CAREFUL changing this: note hardcoded indexes below
1943 * (-8, -9, -10) are reserved to ease the hardcoding.
1945 static const char *ide_words[] = {
1946 "noprobe", "serialize", "autotune", "noautotune",
1947 "reset", "dma", "ata66", "minus8", "minus9",
1948 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1949 "dtc2278", "umc8672", "ali14xx", "dc4030", NULL };
1951 hwif = &ide_hwifs[hw];
1952 i = match_parm(&s[4], ide_words, vals, 3);
1955 * Cryptic check to ensure chipset not already set for hwif.
1956 * Note: we can't depend on hwif->chipset here.
1958 if ((i >= -18 && i <= -11) || (i > 0 && i <= 3)) {
1959 /* chipset already specified */
1960 if (is_chipset_set[hw])
1962 if (i > -18 && i <= -11) {
1963 /* these drivers are for "ide0=" only */
1966 /* chipset already specified for 2nd port */
1967 if (is_chipset_set[hw+1])
1970 is_chipset_set[hw] = 1;
1975 #ifdef CONFIG_BLK_DEV_PDC4030
1976 case -18: /* "dc4030" */
1980 #ifdef CONFIG_BLK_DEV_ALI14XX
1981 case -17: /* "ali14xx" */
1985 #ifdef CONFIG_BLK_DEV_UMC8672
1986 case -16: /* "umc8672" */
1990 #ifdef CONFIG_BLK_DEV_DTC2278
1991 case -15: /* "dtc2278" */
1995 #ifdef CONFIG_BLK_DEV_CMD640
1996 case -14: /* "cmd640_vlb" */
1998 extern int cmd640_vlb; /* flag for cmd640.c */
2003 #ifdef CONFIG_BLK_DEV_HT6560B
2004 case -13: /* "ht6560b" */
2008 #ifdef CONFIG_BLK_DEV_QD65XX
2009 case -12: /* "qd65xx" */
2013 #ifdef CONFIG_BLK_DEV_4DRIVES
2014 case -11: /* "four" drives on one set of ports */
2016 ide_hwif_t *mate = &ide_hwifs[hw^1];
2017 mate->drives[0].select.all ^= 0x20;
2018 mate->drives[1].select.all ^= 0x20;
2019 hwif->chipset = mate->chipset = ide_4drives;
2020 mate->irq = hwif->irq;
2021 memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports));
2024 #endif /* CONFIG_BLK_DEV_4DRIVES */
2025 case -10: /* minus10 */
2026 case -9: /* minus9 */
2027 case -8: /* minus8 */
2029 case -7: /* ata66 */
2030 #ifdef CONFIG_BLK_DEV_IDEPCI
2031 hwif->udma_four = 1;
2039 case -5: /* "reset" */
2042 case -4: /* "noautotune" */
2043 hwif->drives[0].autotune = IDE_TUNE_NOAUTO;
2044 hwif->drives[1].autotune = IDE_TUNE_NOAUTO;
2046 case -3: /* "autotune" */
2047 hwif->drives[0].autotune = IDE_TUNE_AUTO;
2048 hwif->drives[1].autotune = IDE_TUNE_AUTO;
2050 case -2: /* "serialize" */
2052 hwif->mate = &ide_hwifs[hw^1];
2053 hwif->mate->mate = hwif;
2054 hwif->serialized = hwif->mate->serialized = 1;
2057 case -1: /* "noprobe" */
2062 vals[1] = vals[0] + 0x206; /* default ctl */
2063 case 2: /* base,ctl */
2064 vals[2] = 0; /* default irq = probe for it */
2065 case 3: /* base,ctl,irq */
2066 hwif->hw.irq = vals[2];
2067 ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq);
2068 memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
2069 hwif->irq = vals[2];
2071 hwif->chipset = ide_forced;
2074 case 0: goto bad_option;
2076 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
2081 printk(" -- BAD OPTION\n");
2084 printk("-- NOT SUPPORTED ON ide%d", hw);
2090 extern void pnpide_init(void);
2091 extern void h8300_ide_init(void);
2094 * probe_for_hwifs() finds/initializes "known" IDE interfaces
2096 static void __init probe_for_hwifs (void)
2098 #ifdef CONFIG_BLK_DEV_IDEPCI
2099 ide_scan_pcibus(ide_scan_direction);
2100 #endif /* CONFIG_BLK_DEV_IDEPCI */
2102 #ifdef CONFIG_ETRAX_IDE
2104 extern void init_e100_ide(void);
2107 #endif /* CONFIG_ETRAX_IDE */
2108 #ifdef CONFIG_BLK_DEV_CMD640
2110 extern void ide_probe_for_cmd640x(void);
2111 ide_probe_for_cmd640x();
2113 #endif /* CONFIG_BLK_DEV_CMD640 */
2114 #ifdef CONFIG_BLK_DEV_PDC4030
2116 extern int pdc4030_init(void);
2118 (void)pdc4030_init();
2120 #endif /* CONFIG_BLK_DEV_PDC4030 */
2121 #ifdef CONFIG_BLK_DEV_IDE_PMAC
2123 extern void pmac_ide_probe(void);
2126 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
2127 #ifdef CONFIG_BLK_DEV_GAYLE
2129 extern void gayle_init(void);
2132 #endif /* CONFIG_BLK_DEV_GAYLE */
2133 #ifdef CONFIG_BLK_DEV_FALCON_IDE
2135 extern void falconide_init(void);
2138 #endif /* CONFIG_BLK_DEV_FALCON_IDE */
2139 #ifdef CONFIG_BLK_DEV_MAC_IDE
2141 extern void macide_init(void);
2144 #endif /* CONFIG_BLK_DEV_MAC_IDE */
2145 #ifdef CONFIG_BLK_DEV_Q40IDE
2147 extern void q40ide_init(void);
2150 #endif /* CONFIG_BLK_DEV_Q40IDE */
2151 #ifdef CONFIG_BLK_DEV_BUDDHA
2153 extern void buddha_init(void);
2156 #endif /* CONFIG_BLK_DEV_BUDDHA */
2157 #ifdef CONFIG_BLK_DEV_IDEPNP
2166 * Actually unregister the subdriver. Called with the
2167 * request lock dropped.
2170 static int default_cleanup (ide_drive_t *drive)
2172 return ide_unregister_subdriver(drive);
2175 static ide_startstop_t default_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
2177 ide_end_request(drive, 0, 0);
2181 static int default_end_request (ide_drive_t *drive, int uptodate, int nr_sects)
2183 return ide_end_request(drive, uptodate, nr_sects);
2186 static u8 default_sense (ide_drive_t *drive, const char *msg, u8 stat)
2188 return ide_dump_status(drive, msg, stat);
2191 static ide_startstop_t default_error (ide_drive_t *drive, const char *msg, u8 stat)
2193 return ide_error(drive, msg, stat);
2196 static void default_pre_reset (ide_drive_t *drive)
2200 static sector_t default_capacity (ide_drive_t *drive)
2205 static ide_startstop_t default_special (ide_drive_t *drive)
2207 special_t *s = &drive->special;
2210 drive->mult_req = 0;
2214 static int default_attach (ide_drive_t *drive)
2216 printk(KERN_ERR "%s: does not support hotswap of device class !\n",
2222 static ide_startstop_t default_abort (ide_drive_t *drive, const char *msg)
2224 return ide_abort(drive, msg);
2227 static ide_startstop_t default_start_power_step(ide_drive_t *drive,
2230 rq->pm->pm_step = ide_pm_state_completed;
2234 static void setup_driver_defaults (ide_driver_t *d)
2236 if (d->cleanup == NULL) d->cleanup = default_cleanup;
2237 if (d->do_request == NULL) d->do_request = default_do_request;
2238 if (d->end_request == NULL) d->end_request = default_end_request;
2239 if (d->sense == NULL) d->sense = default_sense;
2240 if (d->error == NULL) d->error = default_error;
2241 if (d->abort == NULL) d->abort = default_abort;
2242 if (d->pre_reset == NULL) d->pre_reset = default_pre_reset;
2243 if (d->capacity == NULL) d->capacity = default_capacity;
2244 if (d->special == NULL) d->special = default_special;
2245 if (d->attach == NULL) d->attach = default_attach;
2246 if (d->start_power_step == NULL)
2247 d->start_power_step = default_start_power_step;
2250 int ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
2252 unsigned long flags;
2254 BUG_ON(!drive->driver);
2256 spin_lock_irqsave(&ide_lock, flags);
2257 if (!drive->present || drive->driver != &idedefault_driver ||
2258 drive->usage || drive->dead) {
2259 spin_unlock_irqrestore(&ide_lock, flags);
2262 drive->driver = driver;
2263 spin_unlock_irqrestore(&ide_lock, flags);
2264 spin_lock(&drives_lock);
2265 list_add_tail(&drive->list, &driver->drives);
2266 spin_unlock(&drives_lock);
2267 // printk(KERN_INFO "%s: attached %s driver.\n", drive->name, driver->name);
2268 if ((drive->autotune == IDE_TUNE_DEFAULT) ||
2269 (drive->autotune == IDE_TUNE_AUTO)) {
2270 /* DMA timings and setup moved to ide-probe.c */
2271 drive->dsc_overlap = (drive->next != drive && driver->supports_dsc_overlap);
2274 drive->suspend_reset = 0;
2275 #ifdef CONFIG_PROC_FS
2276 if (drive->driver != &idedefault_driver) {
2277 ide_add_proc_entries(drive->proc, generic_subdriver_entries, drive);
2278 ide_add_proc_entries(drive->proc, driver->proc, drive);
2284 EXPORT_SYMBOL(ide_register_subdriver);
2287 * ide_unregister_subdriver - disconnect drive from driver
2288 * @drive: drive to unplug
2290 * Disconnect a drive from the driver it was attached to and then
2291 * clean up the various proc files and other objects attached to it.
2293 * Takes ide_setting_sem, ide_lock and drives_lock.
2294 * Caller must hold none of the locks.
2296 * No locking versus subdriver unload because we are moving to the
2297 * default driver anyway. Wants double checking.
2300 int ide_unregister_subdriver (ide_drive_t *drive)
2302 unsigned long flags;
2304 down(&ide_setting_sem);
2305 spin_lock_irqsave(&ide_lock, flags);
2306 if (drive->usage || drive->driver == &idedefault_driver || DRIVER(drive)->busy) {
2307 spin_unlock_irqrestore(&ide_lock, flags);
2308 up(&ide_setting_sem);
2311 #ifdef CONFIG_PROC_FS
2312 ide_remove_proc_entries(drive->proc, DRIVER(drive)->proc);
2313 ide_remove_proc_entries(drive->proc, generic_subdriver_entries);
2315 auto_remove_settings(drive);
2316 drive->driver = &idedefault_driver;
2317 spin_unlock_irqrestore(&ide_lock, flags);
2318 up(&ide_setting_sem);
2319 spin_lock(&drives_lock);
2320 list_del_init(&drive->list);
2321 spin_unlock(&drives_lock);
2322 /* drive will be added to &idedefault_driver->drives in ata_attach() */
2326 EXPORT_SYMBOL(ide_unregister_subdriver);
2328 static int ide_drive_remove(struct device * dev)
2330 ide_drive_t * drive = container_of(dev,ide_drive_t,gendev);
2331 DRIVER(drive)->cleanup(drive);
2336 * ide_register_driver - register IDE device driver
2337 * @driver: the IDE device driver
2339 * Register a new device driver and then scan the devices
2340 * on the IDE bus in case any should be attached to the
2341 * driver we have just registered. If so attach them.
2343 * Takes drivers_lock and drives_lock.
2346 int ide_register_driver(ide_driver_t *driver)
2348 struct list_head list;
2349 struct list_head *list_loop;
2350 struct list_head *tmp_storage;
2352 setup_driver_defaults(driver);
2354 spin_lock(&drivers_lock);
2355 list_add(&driver->drivers, &drivers);
2356 spin_unlock(&drivers_lock);
2358 INIT_LIST_HEAD(&list);
2359 spin_lock(&drives_lock);
2360 list_splice_init(&idedefault_driver.drives, &list);
2361 spin_unlock(&drives_lock);
2363 list_for_each_safe(list_loop, tmp_storage, &list) {
2364 ide_drive_t *drive = container_of(list_loop, ide_drive_t, list);
2365 list_del_init(&drive->list);
2369 driver->gen_driver.name = (char *) driver->name;
2370 driver->gen_driver.bus = &ide_bus_type;
2371 driver->gen_driver.remove = ide_drive_remove;
2372 return driver_register(&driver->gen_driver);
2375 EXPORT_SYMBOL(ide_register_driver);
2378 * ide_unregister_driver - unregister IDE device driver
2379 * @driver: the IDE device driver
2381 * Called when a driver module is being unloaded. We reattach any
2382 * devices to whatever driver claims them next (typically the default
2385 * Takes drivers_lock and called functions will take ide_setting_sem.
2388 void ide_unregister_driver(ide_driver_t *driver)
2392 spin_lock(&drivers_lock);
2393 list_del(&driver->drivers);
2394 spin_unlock(&drivers_lock);
2396 driver_unregister(&driver->gen_driver);
2398 while(!list_empty(&driver->drives)) {
2399 drive = list_entry(driver->drives.next, ide_drive_t, list);
2400 if (driver->cleanup(drive)) {
2401 printk(KERN_ERR "%s: cleanup_module() called while still busy\n", drive->name);
2408 EXPORT_SYMBOL(ide_unregister_driver);
2410 struct block_device_operations ide_fops[] = {{
2411 .owner = THIS_MODULE,
2415 EXPORT_SYMBOL(ide_fops);
2421 EXPORT_SYMBOL(ide_lock);
2423 struct bus_type ide_bus_type = {
2425 .suspend = generic_ide_suspend,
2426 .resume = generic_ide_resume,
2430 * This is gets invoked once during initialization, to set *everything* up
2432 int __init ide_init (void)
2434 printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n");
2435 devfs_mk_dir("ide");
2436 system_bus_speed = ide_system_bus_speed();
2438 bus_register(&ide_bus_type);
2442 #ifdef CONFIG_PROC_FS
2443 proc_ide_root = proc_mkdir("ide", NULL);
2446 #ifdef CONFIG_BLK_DEV_ALI14XX
2448 (void)ali14xx_init();
2450 #ifdef CONFIG_BLK_DEV_UMC8672
2452 (void)umc8672_init();
2454 #ifdef CONFIG_BLK_DEV_DTC2278
2456 (void)dtc2278_init();
2458 #ifdef CONFIG_BLK_DEV_HT6560B
2460 (void)ht6560b_init();
2462 #ifdef CONFIG_BLK_DEV_QD65XX
2464 (void)qd65xx_init();
2468 /* Probe for special PCI and other "known" interface chipsets. */
2472 #ifdef CONFIG_PROC_FS
2479 char *options = NULL;
2480 MODULE_PARM(options,"s");
2481 MODULE_LICENSE("GPL");
2483 static void __init parse_options (char *line)
2487 if (line == NULL || !*line)
2489 while ((line = next) != NULL) {
2490 if ((next = strchr(line,' ')) != NULL)
2492 if (!ide_setup(line))
2493 printk (KERN_INFO "Unknown option '%s'\n", line);
2497 int init_module (void)
2499 parse_options(options);
2503 void cleanup_module (void)
2507 for (index = 0; index < MAX_HWIFS; ++index) {
2508 ide_unregister(index);
2509 if (ide_hwifs[index].dma_base)
2510 (void) ide_release_dma(&ide_hwifs[index]);
2513 #ifdef CONFIG_PROC_FS
2516 devfs_remove("ide");
2518 bus_unregister(&ide_bus_type);
2523 __setup("", ide_setup);
2525 module_init(ide_init);