2 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyrifht (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
7 * Mostly written by Mark Lord <mlord@pobox.com>
8 * and Gadi Oxman <gadio@netvision.net.il>
9 * and Andre Hedrick <andre@linux-ide.org>
11 * See linux/MAINTAINERS for address of current maintainer.
13 * This is the multiple IDE interface driver, as evolved from hd.c.
14 * It supports up to MAX_HWIFS IDE interfaces, on one or more IRQs
16 * There can be up to two drives per interface, as per the ATA-2 spec.
22 * | It traverses the request-list, using interrupts to jump between functions.
23 * | As nearly all functions can be called within interrupts, we may not sleep.
24 * | Special care is recommended. Have Fun!
26 * | modified by Drew Eckhardt to check nr of hd's from the CMOS.
28 * | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
29 * | in the early extended-partition checks and added DM partitions.
31 * | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
33 * | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
34 * | and general streamlining by Mark Lord (mlord@pobox.com).
36 * October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
38 * Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
39 * Delman Lee (delman@ieee.org) ("Mr. atdisk2")
40 * Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
42 * This was a rewrite of just about everything from hd.c, though some original
43 * code is still sprinkled about. Think of it as a major evolution, with
44 * inspiration from lots of linux users, esp. hamish@zot.apana.org.au
47 #define REVISION "Revision: 7.00alpha2"
49 #define _IDE_C /* Tell ide.h it's really us */
51 #include <linux/module.h>
52 #include <linux/types.h>
53 #include <linux/string.h>
54 #include <linux/kernel.h>
55 #include <linux/timer.h>
57 #include <linux/interrupt.h>
58 #include <linux/major.h>
59 #include <linux/errno.h>
60 #include <linux/genhd.h>
61 #include <linux/blkpg.h>
62 #include <linux/slab.h>
63 #include <linux/init.h>
64 #include <linux/pci.h>
65 #include <linux/delay.h>
66 #include <linux/ide.h>
67 #include <linux/completion.h>
68 #include <linux/reboot.h>
69 #include <linux/cdrom.h>
70 #include <linux/seq_file.h>
71 #include <linux/device.h>
72 #include <linux/bitops.h>
74 #include <asm/byteorder.h>
76 #include <asm/uaccess.h>
80 /* default maximum number of failures */
81 #define IDE_DEFAULT_MAX_FAILURES 1
83 static const u8 ide_hwif_to_major
[] = { IDE0_MAJOR
, IDE1_MAJOR
,
84 IDE2_MAJOR
, IDE3_MAJOR
,
85 IDE4_MAJOR
, IDE5_MAJOR
,
86 IDE6_MAJOR
, IDE7_MAJOR
,
87 IDE8_MAJOR
, IDE9_MAJOR
};
89 static int idebus_parameter
; /* holds the "idebus=" parameter */
90 static int system_bus_speed
; /* holds what we think is VESA/PCI bus speed */
92 DEFINE_MUTEX(ide_cfg_mtx
);
93 __cacheline_aligned_in_smp
DEFINE_SPINLOCK(ide_lock
);
95 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
96 int ide_scan_direction
; /* THIS was formerly 2.2.x pci=reverse */
101 #ifdef CONFIG_BLK_DEV_IDEACPI
103 int ide_noacpitfs
= 1;
104 int ide_noacpionboot
= 1;
108 * This is declared extern in ide.h, for access by other IDE modules:
110 ide_hwif_t ide_hwifs
[MAX_HWIFS
]; /* master data repository */
112 EXPORT_SYMBOL(ide_hwifs
);
115 * Do not even *think* about calling this!
117 void ide_init_port_data(ide_hwif_t
*hwif
, unsigned int index
)
121 /* bulk initialize hwif & drive info with zeros */
122 memset(hwif
, 0, sizeof(ide_hwif_t
));
124 /* fill in any non-zero initial values */
126 hwif
->major
= ide_hwif_to_major
[index
];
131 hwif
->name
[3] = '0' + index
;
133 hwif
->bus_state
= BUSSTATE_ON
;
135 init_completion(&hwif
->gendev_rel_comp
);
137 default_hwif_iops(hwif
);
138 default_hwif_transport(hwif
);
139 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
140 ide_drive_t
*drive
= &hwif
->drives
[unit
];
142 drive
->media
= ide_disk
;
143 drive
->select
.all
= (unit
<<4)|0xa0;
146 drive
->ready_stat
= READY_STAT
;
147 drive
->bad_wstat
= BAD_W_STAT
;
148 drive
->special
.b
.recalibrate
= 1;
149 drive
->special
.b
.set_geometry
= 1;
150 drive
->name
[0] = 'h';
151 drive
->name
[1] = 'd';
152 drive
->name
[2] = 'a' + (index
* MAX_DRIVES
) + unit
;
153 drive
->max_failures
= IDE_DEFAULT_MAX_FAILURES
;
154 drive
->using_dma
= 0;
156 INIT_LIST_HEAD(&drive
->list
);
157 init_completion(&drive
->gendev_rel_comp
);
160 EXPORT_SYMBOL_GPL(ide_init_port_data
);
162 static void init_hwif_default(ide_hwif_t
*hwif
, unsigned int index
)
166 memset(&hw
, 0, sizeof(hw_regs_t
));
168 ide_init_hwif_ports(&hw
, ide_default_io_base(index
), 0, &hwif
->irq
);
170 memcpy(hwif
->io_ports
, hw
.io_ports
, sizeof(hw
.io_ports
));
172 hwif
->noprobe
= !hwif
->io_ports
[IDE_DATA_OFFSET
];
173 #ifdef CONFIG_BLK_DEV_HD
174 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == HD_DATA
)
175 hwif
->noprobe
= 1; /* may be overridden by ide_setup() */
180 * init_ide_data() sets reasonable default values into all fields
181 * of all instances of the hwifs and drives, but only on the first call.
182 * Subsequent calls have no effect (they don't wipe out anything).
184 * This routine is normally called at driver initialization time,
185 * but may also be called MUCH earlier during kernel "command-line"
186 * parameter processing. As such, we cannot depend on any other parts
187 * of the kernel (such as memory allocation) to be functioning yet.
189 * This is too bad, as otherwise we could dynamically allocate the
190 * ide_drive_t structs as needed, rather than always consuming memory
191 * for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
193 * FIXME: We should stuff the setup data into __init and copy the
194 * relevant hwifs/allocate them properly during boot.
196 #define MAGIC_COOKIE 0x12345678
197 static void __init
init_ide_data (void)
201 static unsigned long magic_cookie
= MAGIC_COOKIE
;
203 if (magic_cookie
!= MAGIC_COOKIE
)
204 return; /* already initialized */
207 /* Initialise all interface structures */
208 for (index
= 0; index
< MAX_HWIFS
; ++index
) {
209 hwif
= &ide_hwifs
[index
];
210 ide_init_port_data(hwif
, index
);
211 init_hwif_default(hwif
, index
);
212 #if !defined(CONFIG_PPC32) || !defined(CONFIG_PCI)
214 ide_init_default_irq(hwif
->io_ports
[IDE_DATA_OFFSET
]);
220 * ide_system_bus_speed - guess bus speed
222 * ide_system_bus_speed() returns what we think is the system VESA/PCI
223 * bus speed (in MHz). This is used for calculating interface PIO timings.
224 * The default is 40 for known PCI systems, 50 otherwise.
225 * The "idebus=xx" parameter can be used to override this value.
226 * The actual value to be used is computed/displayed the first time
227 * through. Drivers should only use this as a last resort.
229 * Returns a guessed speed in MHz.
232 static int ide_system_bus_speed(void)
235 static struct pci_device_id pci_default
[] = {
236 { PCI_DEVICE(PCI_ANY_ID
, PCI_ANY_ID
) },
240 #define pci_default 0
241 #endif /* CONFIG_PCI */
243 /* user supplied value */
244 if (idebus_parameter
)
245 return idebus_parameter
;
247 /* safe default value for PCI or VESA and PCI*/
248 return pci_dev_present(pci_default
) ? 33 : 50;
251 ide_hwif_t
* ide_find_port(unsigned long base
)
256 for (i
= 0; i
< MAX_HWIFS
; i
++) {
257 hwif
= &ide_hwifs
[i
];
258 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == base
)
262 for (i
= 0; i
< MAX_HWIFS
; i
++) {
263 hwif
= &ide_hwifs
[i
];
264 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == 0)
273 EXPORT_SYMBOL_GPL(ide_find_port
);
275 static struct resource
* hwif_request_region(ide_hwif_t
*hwif
,
276 unsigned long addr
, int num
)
278 struct resource
*res
= request_region(addr
, num
, hwif
->name
);
281 printk(KERN_ERR
"%s: I/O resource 0x%lX-0x%lX not free.\n",
282 hwif
->name
, addr
, addr
+num
-1);
287 * ide_hwif_request_regions - request resources for IDE
288 * @hwif: interface to use
290 * Requests all the needed resources for an interface.
291 * Right now core IDE code does this work which is deeply wrong.
292 * MMIO leaves it to the controller driver,
293 * PIO will migrate this way over time.
296 int ide_hwif_request_regions(ide_hwif_t
*hwif
)
303 addr
= hwif
->io_ports
[IDE_CONTROL_OFFSET
];
304 if (addr
&& !hwif_request_region(hwif
, addr
, 1))
305 goto control_region_busy
;
307 addr
= hwif
->io_ports
[IDE_DATA_OFFSET
];
308 if ((addr
| 7) == hwif
->io_ports
[IDE_STATUS_OFFSET
]) {
309 if (!hwif_request_region(hwif
, addr
, 8))
310 goto data_region_busy
;
314 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++) {
315 addr
= hwif
->io_ports
[i
];
316 if (!hwif_request_region(hwif
, addr
, 1)) {
318 release_region(addr
, 1);
319 goto data_region_busy
;
325 addr
= hwif
->io_ports
[IDE_CONTROL_OFFSET
];
327 release_region(addr
, 1);
329 /* If any errors are return, we drop the hwif interface. */
334 * ide_hwif_release_regions - free IDE resources
336 * Note that we only release the standard ports,
337 * and do not even try to handle any extra ports
338 * allocated for weird IDE interface chipsets.
340 * Note also that we don't yet handle mmio resources here. More
341 * importantly our caller should be doing this so we need to
342 * restructure this as a helper function for drivers.
345 void ide_hwif_release_regions(ide_hwif_t
*hwif
)
351 if (hwif
->io_ports
[IDE_CONTROL_OFFSET
])
352 release_region(hwif
->io_ports
[IDE_CONTROL_OFFSET
], 1);
353 if (hwif
->straight8
) {
354 release_region(hwif
->io_ports
[IDE_DATA_OFFSET
], 8);
357 for (i
= IDE_DATA_OFFSET
; i
<= IDE_STATUS_OFFSET
; i
++)
358 if (hwif
->io_ports
[i
])
359 release_region(hwif
->io_ports
[i
], 1);
363 * ide_hwif_restore - restore hwif to template
364 * @hwif: hwif to update
365 * @tmp_hwif: template
367 * Restore hwif to a previous state by copying most settings
371 static void ide_hwif_restore(ide_hwif_t
*hwif
, ide_hwif_t
*tmp_hwif
)
373 hwif
->hwgroup
= tmp_hwif
->hwgroup
;
375 hwif
->gendev
.parent
= tmp_hwif
->gendev
.parent
;
377 hwif
->proc
= tmp_hwif
->proc
;
379 hwif
->major
= tmp_hwif
->major
;
380 hwif
->straight8
= tmp_hwif
->straight8
;
381 hwif
->bus_state
= tmp_hwif
->bus_state
;
383 hwif
->host_flags
= tmp_hwif
->host_flags
;
385 hwif
->pio_mask
= tmp_hwif
->pio_mask
;
387 hwif
->ultra_mask
= tmp_hwif
->ultra_mask
;
388 hwif
->mwdma_mask
= tmp_hwif
->mwdma_mask
;
389 hwif
->swdma_mask
= tmp_hwif
->swdma_mask
;
391 hwif
->cbl
= tmp_hwif
->cbl
;
393 hwif
->chipset
= tmp_hwif
->chipset
;
394 hwif
->hold
= tmp_hwif
->hold
;
396 hwif
->dev
= tmp_hwif
->dev
;
398 #ifdef CONFIG_BLK_DEV_IDEPCI
399 hwif
->cds
= tmp_hwif
->cds
;
402 hwif
->set_pio_mode
= tmp_hwif
->set_pio_mode
;
403 hwif
->set_dma_mode
= tmp_hwif
->set_dma_mode
;
404 hwif
->mdma_filter
= tmp_hwif
->mdma_filter
;
405 hwif
->udma_filter
= tmp_hwif
->udma_filter
;
406 hwif
->selectproc
= tmp_hwif
->selectproc
;
407 hwif
->reset_poll
= tmp_hwif
->reset_poll
;
408 hwif
->pre_reset
= tmp_hwif
->pre_reset
;
409 hwif
->resetproc
= tmp_hwif
->resetproc
;
410 hwif
->maskproc
= tmp_hwif
->maskproc
;
411 hwif
->quirkproc
= tmp_hwif
->quirkproc
;
412 hwif
->busproc
= tmp_hwif
->busproc
;
414 hwif
->ata_input_data
= tmp_hwif
->ata_input_data
;
415 hwif
->ata_output_data
= tmp_hwif
->ata_output_data
;
416 hwif
->atapi_input_bytes
= tmp_hwif
->atapi_input_bytes
;
417 hwif
->atapi_output_bytes
= tmp_hwif
->atapi_output_bytes
;
419 hwif
->dma_host_set
= tmp_hwif
->dma_host_set
;
420 hwif
->dma_setup
= tmp_hwif
->dma_setup
;
421 hwif
->dma_exec_cmd
= tmp_hwif
->dma_exec_cmd
;
422 hwif
->dma_start
= tmp_hwif
->dma_start
;
423 hwif
->ide_dma_end
= tmp_hwif
->ide_dma_end
;
424 hwif
->ide_dma_test_irq
= tmp_hwif
->ide_dma_test_irq
;
425 hwif
->ide_dma_clear_irq
= tmp_hwif
->ide_dma_clear_irq
;
426 hwif
->dma_lost_irq
= tmp_hwif
->dma_lost_irq
;
427 hwif
->dma_timeout
= tmp_hwif
->dma_timeout
;
429 hwif
->OUTB
= tmp_hwif
->OUTB
;
430 hwif
->OUTBSYNC
= tmp_hwif
->OUTBSYNC
;
431 hwif
->OUTW
= tmp_hwif
->OUTW
;
432 hwif
->OUTSW
= tmp_hwif
->OUTSW
;
433 hwif
->OUTSL
= tmp_hwif
->OUTSL
;
435 hwif
->INB
= tmp_hwif
->INB
;
436 hwif
->INW
= tmp_hwif
->INW
;
437 hwif
->INSW
= tmp_hwif
->INSW
;
438 hwif
->INSL
= tmp_hwif
->INSL
;
440 hwif
->sg_max_nents
= tmp_hwif
->sg_max_nents
;
442 hwif
->mmio
= tmp_hwif
->mmio
;
443 hwif
->rqsize
= tmp_hwif
->rqsize
;
445 #ifndef CONFIG_BLK_DEV_IDECS
446 hwif
->irq
= tmp_hwif
->irq
;
449 hwif
->dma_base
= tmp_hwif
->dma_base
;
450 hwif
->dma_command
= tmp_hwif
->dma_command
;
451 hwif
->dma_vendor1
= tmp_hwif
->dma_vendor1
;
452 hwif
->dma_status
= tmp_hwif
->dma_status
;
453 hwif
->dma_vendor3
= tmp_hwif
->dma_vendor3
;
454 hwif
->dma_prdtable
= tmp_hwif
->dma_prdtable
;
456 hwif
->config_data
= tmp_hwif
->config_data
;
457 hwif
->select_data
= tmp_hwif
->select_data
;
458 hwif
->extra_base
= tmp_hwif
->extra_base
;
459 hwif
->extra_ports
= tmp_hwif
->extra_ports
;
461 hwif
->hwif_data
= tmp_hwif
->hwif_data
;
464 void ide_remove_port_from_hwgroup(ide_hwif_t
*hwif
)
466 ide_hwgroup_t
*hwgroup
= hwif
->hwgroup
;
468 spin_lock_irq(&ide_lock
);
470 * Remove us from the hwgroup, and free
471 * the hwgroup if we were the only member
473 if (hwif
->next
== hwif
) {
474 BUG_ON(hwgroup
->hwif
!= hwif
);
477 /* There is another interface in hwgroup.
478 * Unlink us, and set hwgroup->drive and ->hwif to
481 ide_hwif_t
*g
= hwgroup
->hwif
;
483 while (g
->next
!= hwif
)
485 g
->next
= hwif
->next
;
486 if (hwgroup
->hwif
== hwif
) {
487 /* Chose a random hwif for hwgroup->hwif.
488 * It's guaranteed that there are no drives
489 * left in the hwgroup.
491 BUG_ON(hwgroup
->drive
!= NULL
);
494 BUG_ON(hwgroup
->hwif
== hwif
);
496 spin_unlock_irq(&ide_lock
);
500 * ide_unregister - free an IDE interface
501 * @index: index of interface (will change soon to a pointer)
502 * @init_default: init default hwif flag
503 * @restore: restore hwif flag
505 * Perform the final unregister of an IDE interface. At the moment
506 * we don't refcount interfaces so this will also get split up.
509 * The caller must not hold the IDE locks
510 * The drive present/vanishing is not yet properly locked
511 * Take care with the callbacks. These have been split to avoid
512 * deadlocking the IDE layer. The shutdown callback is called
513 * before we take the lock and free resources. It is up to the
514 * caller to be sure there is no pending I/O here, and that
515 * the interface will not be reopened (present/vanishing locking
516 * isn't yet done BTW). After we commit to the final kill we
517 * call the cleanup callback with the ide locks held.
519 * Unregister restores the hwif structures to the default state.
520 * This is raving bonkers.
523 void ide_unregister(unsigned int index
, int init_default
, int restore
)
526 ide_hwif_t
*hwif
, *g
;
527 static ide_hwif_t tmp_hwif
; /* protected by ide_cfg_mtx */
528 ide_hwgroup_t
*hwgroup
;
529 int irq_count
= 0, unit
;
531 BUG_ON(index
>= MAX_HWIFS
);
533 BUG_ON(in_interrupt());
534 BUG_ON(irqs_disabled());
535 mutex_lock(&ide_cfg_mtx
);
536 spin_lock_irq(&ide_lock
);
537 hwif
= &ide_hwifs
[index
];
540 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
541 drive
= &hwif
->drives
[unit
];
544 spin_unlock_irq(&ide_lock
);
545 device_unregister(&drive
->gendev
);
546 wait_for_completion(&drive
->gendev_rel_comp
);
547 spin_lock_irq(&ide_lock
);
551 spin_unlock_irq(&ide_lock
);
553 ide_proc_unregister_port(hwif
);
555 hwgroup
= hwif
->hwgroup
;
557 * free the irq if we were the only hwif using it
561 if (g
->irq
== hwif
->irq
)
564 } while (g
!= hwgroup
->hwif
);
566 free_irq(hwif
->irq
, hwgroup
);
568 ide_remove_port_from_hwgroup(hwif
);
570 device_unregister(&hwif
->gendev
);
571 wait_for_completion(&hwif
->gendev_rel_comp
);
574 * Remove us from the kernel's knowledge
576 blk_unregister_region(MKDEV(hwif
->major
, 0), MAX_DRIVES
<<PARTN_BITS
);
577 kfree(hwif
->sg_table
);
578 unregister_blkdev(hwif
->major
, hwif
->name
);
579 spin_lock_irq(&ide_lock
);
581 if (hwif
->dma_base
) {
582 (void) ide_release_dma(hwif
);
585 hwif
->dma_command
= 0;
586 hwif
->dma_vendor1
= 0;
587 hwif
->dma_status
= 0;
588 hwif
->dma_vendor3
= 0;
589 hwif
->dma_prdtable
= 0;
591 hwif
->extra_base
= 0;
592 hwif
->extra_ports
= 0;
596 * Note that we only release the standard ports,
597 * and do not even try to handle any extra ports
598 * allocated for weird IDE interface chipsets.
600 ide_hwif_release_regions(hwif
);
602 /* copy original settings */
605 /* restore hwif data to pristine status */
606 ide_init_port_data(hwif
, index
);
609 init_hwif_default(hwif
, index
);
612 ide_hwif_restore(hwif
, &tmp_hwif
);
615 spin_unlock_irq(&ide_lock
);
616 mutex_unlock(&ide_cfg_mtx
);
619 EXPORT_SYMBOL(ide_unregister
);
623 * ide_setup_ports - set up IDE interface ports
624 * @hw: register descriptions
625 * @base: base register
626 * @offsets: table of register offsets
627 * @ctrl: control register
629 * @irq: interrupt lie
631 * Setup hw_regs_t structure described by parameters. You
632 * may set up the hw structure yourself OR use this routine to
633 * do it for you. This is basically a helper
637 void ide_setup_ports ( hw_regs_t
*hw
,
638 unsigned long base
, int *offsets
,
639 unsigned long ctrl
, unsigned long intr
,
640 ide_ack_intr_t
*ack_intr
,
642 * ide_io_ops_t *iops,
648 memset(hw
, 0, sizeof(hw_regs_t
));
649 for (i
= 0; i
< IDE_NR_PORTS
; i
++) {
650 if (offsets
[i
] == -1) {
652 case IDE_CONTROL_OFFSET
:
653 hw
->io_ports
[i
] = ctrl
;
655 #if defined(CONFIG_AMIGA) || defined(CONFIG_MAC)
657 hw
->io_ports
[i
] = intr
;
659 #endif /* (CONFIG_AMIGA) || (CONFIG_MAC) */
665 hw
->io_ports
[i
] = base
+ offsets
[i
];
669 hw
->ack_intr
= ack_intr
;
675 void ide_init_port_hw(ide_hwif_t
*hwif
, hw_regs_t
*hw
)
677 memcpy(hwif
->io_ports
, hw
->io_ports
, sizeof(hwif
->io_ports
));
680 hwif
->chipset
= hw
->chipset
;
681 hwif
->gendev
.parent
= hw
->dev
;
682 hwif
->ack_intr
= hw
->ack_intr
;
684 EXPORT_SYMBOL_GPL(ide_init_port_hw
);
686 ide_hwif_t
*ide_deprecated_find_port(unsigned long base
)
691 for (i
= 0; i
< MAX_HWIFS
; i
++) {
692 hwif
= &ide_hwifs
[i
];
693 if (hwif
->io_ports
[IDE_DATA_OFFSET
] == base
)
697 for (i
= 0; i
< MAX_HWIFS
; i
++) {
698 hwif
= &ide_hwifs
[i
];
701 if (!hwif
->present
&& hwif
->mate
== NULL
)
709 EXPORT_SYMBOL_GPL(ide_deprecated_find_port
);
712 * ide_register_hw - register IDE interface
713 * @hw: hardware registers
714 * @quirkproc: quirkproc function
715 * @hwifp: pointer to returned hwif
717 * Register an IDE interface, specifying exactly the registers etc.
719 * Returns -1 on error.
722 int ide_register_hw(hw_regs_t
*hw
, void (*quirkproc
)(ide_drive_t
*),
725 int index
, retry
= 1;
727 u8 idx
[4] = { 0xff, 0xff, 0xff, 0xff };
730 hwif
= ide_deprecated_find_port(hw
->io_ports
[IDE_DATA_OFFSET
]);
734 for (index
= 0; index
< MAX_HWIFS
; index
++)
735 ide_unregister(index
, 1, 1);
740 ide_unregister(index
, 0, 1);
741 else if (!hwif
->hold
)
742 ide_init_port_data(hwif
, index
);
744 ide_init_port_hw(hwif
, hw
);
745 hwif
->quirkproc
= quirkproc
;
749 ide_device_add(idx
, NULL
);
754 return hwif
->present
? index
: -1;
757 EXPORT_SYMBOL(ide_register_hw
);
760 * Locks for IDE setting functionality
763 DEFINE_MUTEX(ide_setting_mtx
);
765 EXPORT_SYMBOL_GPL(ide_setting_mtx
);
768 * ide_spin_wait_hwgroup - wait for group
769 * @drive: drive in the group
771 * Wait for an IDE device group to go non busy and then return
772 * holding the ide_lock which guards the hwgroup->busy status
773 * and right to use it.
776 int ide_spin_wait_hwgroup (ide_drive_t
*drive
)
778 ide_hwgroup_t
*hwgroup
= HWGROUP(drive
);
779 unsigned long timeout
= jiffies
+ (3 * HZ
);
781 spin_lock_irq(&ide_lock
);
783 while (hwgroup
->busy
) {
784 unsigned long lflags
;
785 spin_unlock_irq(&ide_lock
);
786 local_irq_set(lflags
);
787 if (time_after(jiffies
, timeout
)) {
788 local_irq_restore(lflags
);
789 printk(KERN_ERR
"%s: channel busy\n", drive
->name
);
792 local_irq_restore(lflags
);
793 spin_lock_irq(&ide_lock
);
798 EXPORT_SYMBOL(ide_spin_wait_hwgroup
);
800 int set_io_32bit(ide_drive_t
*drive
, int arg
)
802 if (drive
->no_io_32bit
)
805 if (arg
< 0 || arg
> 1 + (SUPPORT_VLB_SYNC
<< 1))
808 if (ide_spin_wait_hwgroup(drive
))
811 drive
->io_32bit
= arg
;
813 spin_unlock_irq(&ide_lock
);
818 static int set_ksettings(ide_drive_t
*drive
, int arg
)
820 if (arg
< 0 || arg
> 1)
823 if (ide_spin_wait_hwgroup(drive
))
825 drive
->keep_settings
= arg
;
826 spin_unlock_irq(&ide_lock
);
831 int set_using_dma(ide_drive_t
*drive
, int arg
)
833 #ifdef CONFIG_BLK_DEV_IDEDMA
834 ide_hwif_t
*hwif
= drive
->hwif
;
837 if (arg
< 0 || arg
> 1)
840 if (!drive
->id
|| !(drive
->id
->capability
& 1))
843 if (hwif
->dma_host_set
== NULL
)
847 if (ide_spin_wait_hwgroup(drive
))
850 * set ->busy flag, unlock and let it ride
852 hwif
->hwgroup
->busy
= 1;
853 spin_unlock_irq(&ide_lock
);
858 if (ide_set_dma(drive
))
864 * lock, clear ->busy flag and unlock before leaving
866 spin_lock_irq(&ide_lock
);
867 hwif
->hwgroup
->busy
= 0;
868 spin_unlock_irq(&ide_lock
);
872 if (arg
< 0 || arg
> 1)
879 int set_pio_mode(ide_drive_t
*drive
, int arg
)
883 if (arg
< 0 || arg
> 255)
886 if (drive
->hwif
->set_pio_mode
== NULL
)
889 if (drive
->special
.b
.set_tune
)
892 ide_init_drive_cmd(&rq
);
893 rq
.cmd_type
= REQ_TYPE_ATA_TASKFILE
;
895 drive
->tune_req
= (u8
) arg
;
896 drive
->special
.b
.set_tune
= 1;
897 (void) ide_do_drive_cmd(drive
, &rq
, ide_wait
);
901 static int set_unmaskirq(ide_drive_t
*drive
, int arg
)
903 if (drive
->no_unmask
)
906 if (arg
< 0 || arg
> 1)
909 if (ide_spin_wait_hwgroup(drive
))
912 spin_unlock_irq(&ide_lock
);
918 * system_bus_clock - clock guess
920 * External version of the bus clock guess used by very old IDE drivers
921 * for things like VLB timings. Should not be used.
924 int system_bus_clock (void)
926 return system_bus_speed
;
929 EXPORT_SYMBOL(system_bus_clock
);
931 static int generic_ide_suspend(struct device
*dev
, pm_message_t mesg
)
933 ide_drive_t
*drive
= dev
->driver_data
;
934 ide_hwif_t
*hwif
= HWIF(drive
);
936 struct request_pm_state rqpm
;
940 /* Call ACPI _GTM only once */
941 if (!(drive
->dn
% 2))
942 ide_acpi_get_timing(hwif
);
944 memset(&rq
, 0, sizeof(rq
));
945 memset(&rqpm
, 0, sizeof(rqpm
));
946 memset(&args
, 0, sizeof(args
));
947 rq
.cmd_type
= REQ_TYPE_PM_SUSPEND
;
950 rqpm
.pm_step
= ide_pm_state_start_suspend
;
951 if (mesg
.event
== PM_EVENT_PRETHAW
)
952 mesg
.event
= PM_EVENT_FREEZE
;
953 rqpm
.pm_state
= mesg
.event
;
955 ret
= ide_do_drive_cmd(drive
, &rq
, ide_wait
);
956 /* only call ACPI _PS3 after both drivers are suspended */
957 if (!ret
&& (((drive
->dn
% 2) && hwif
->drives
[0].present
958 && hwif
->drives
[1].present
)
959 || !hwif
->drives
[0].present
960 || !hwif
->drives
[1].present
))
961 ide_acpi_set_state(hwif
, 0);
965 static int generic_ide_resume(struct device
*dev
)
967 ide_drive_t
*drive
= dev
->driver_data
;
968 ide_hwif_t
*hwif
= HWIF(drive
);
970 struct request_pm_state rqpm
;
974 /* Call ACPI _STM only once */
975 if (!(drive
->dn
% 2)) {
976 ide_acpi_set_state(hwif
, 1);
977 ide_acpi_push_timing(hwif
);
980 ide_acpi_exec_tfs(drive
);
982 memset(&rq
, 0, sizeof(rq
));
983 memset(&rqpm
, 0, sizeof(rqpm
));
984 memset(&args
, 0, sizeof(args
));
985 rq
.cmd_type
= REQ_TYPE_PM_RESUME
;
988 rqpm
.pm_step
= ide_pm_state_start_resume
;
989 rqpm
.pm_state
= PM_EVENT_ON
;
991 err
= ide_do_drive_cmd(drive
, &rq
, ide_head_wait
);
993 if (err
== 0 && dev
->driver
) {
994 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
1003 int generic_ide_ioctl(ide_drive_t
*drive
, struct file
*file
, struct block_device
*bdev
,
1004 unsigned int cmd
, unsigned long arg
)
1006 unsigned long flags
;
1008 void __user
*p
= (void __user
*)arg
;
1009 int err
= 0, (*setfunc
)(ide_drive_t
*, int);
1013 case HDIO_GET_32BIT
: val
= &drive
->io_32bit
; goto read_val
;
1014 case HDIO_GET_KEEPSETTINGS
: val
= &drive
->keep_settings
; goto read_val
;
1015 case HDIO_GET_UNMASKINTR
: val
= &drive
->unmask
; goto read_val
;
1016 case HDIO_GET_DMA
: val
= &drive
->using_dma
; goto read_val
;
1017 case HDIO_SET_32BIT
: setfunc
= set_io_32bit
; goto set_val
;
1018 case HDIO_SET_KEEPSETTINGS
: setfunc
= set_ksettings
; goto set_val
;
1019 case HDIO_SET_PIO_MODE
: setfunc
= set_pio_mode
; goto set_val
;
1020 case HDIO_SET_UNMASKINTR
: setfunc
= set_unmaskirq
; goto set_val
;
1021 case HDIO_SET_DMA
: setfunc
= set_using_dma
; goto set_val
;
1025 case HDIO_OBSOLETE_IDENTITY
:
1026 case HDIO_GET_IDENTITY
:
1027 if (bdev
!= bdev
->bd_contains
)
1029 if (drive
->id_read
== 0)
1031 if (copy_to_user(p
, drive
->id
, (cmd
== HDIO_GET_IDENTITY
) ? sizeof(*drive
->id
) : 142))
1036 return put_user(drive
->dsc_overlap
<< IDE_NICE_DSC_OVERLAP
|
1037 drive
->atapi_overlap
<< IDE_NICE_ATAPI_OVERLAP
|
1038 drive
->nice1
<< IDE_NICE_1
,
1039 (long __user
*) arg
);
1040 #ifdef CONFIG_IDE_TASK_IOCTL
1041 case HDIO_DRIVE_TASKFILE
:
1042 if (!capable(CAP_SYS_ADMIN
) || !capable(CAP_SYS_RAWIO
))
1044 switch(drive
->media
) {
1046 return ide_taskfile_ioctl(drive
, cmd
, arg
);
1050 #endif /* CONFIG_IDE_TASK_IOCTL */
1052 case HDIO_DRIVE_CMD
:
1053 if (!capable(CAP_SYS_RAWIO
))
1055 return ide_cmd_ioctl(drive
, cmd
, arg
);
1057 case HDIO_DRIVE_TASK
:
1058 if (!capable(CAP_SYS_RAWIO
))
1060 return ide_task_ioctl(drive
, cmd
, arg
);
1062 case HDIO_SCAN_HWIF
:
1066 if (!capable(CAP_SYS_RAWIO
)) return -EACCES
;
1067 if (copy_from_user(args
, p
, 3 * sizeof(int)))
1069 memset(&hw
, 0, sizeof(hw
));
1070 ide_init_hwif_ports(&hw
, (unsigned long) args
[0],
1071 (unsigned long) args
[1], NULL
);
1073 if (ide_register_hw(&hw
, NULL
, NULL
) == -1)
1077 case HDIO_UNREGISTER_HWIF
:
1078 if (!capable(CAP_SYS_RAWIO
)) return -EACCES
;
1079 /* (arg > MAX_HWIFS) checked in function */
1080 ide_unregister(arg
, 1, 1);
1083 if (!capable(CAP_SYS_ADMIN
)) return -EACCES
;
1084 if (arg
!= (arg
& ((1 << IDE_NICE_DSC_OVERLAP
) | (1 << IDE_NICE_1
))))
1086 drive
->dsc_overlap
= (arg
>> IDE_NICE_DSC_OVERLAP
) & 1;
1087 drv
= *(ide_driver_t
**)bdev
->bd_disk
->private_data
;
1088 if (drive
->dsc_overlap
&& !drv
->supports_dsc_overlap
) {
1089 drive
->dsc_overlap
= 0;
1092 drive
->nice1
= (arg
>> IDE_NICE_1
) & 1;
1094 case HDIO_DRIVE_RESET
:
1096 unsigned long flags
;
1097 if (!capable(CAP_SYS_ADMIN
)) return -EACCES
;
1100 * Abort the current command on the
1101 * group if there is one, taking
1102 * care not to allow anything else
1103 * to be queued and to die on the
1104 * spot if we miss one somehow
1107 spin_lock_irqsave(&ide_lock
, flags
);
1109 if (HWGROUP(drive
)->resetting
) {
1110 spin_unlock_irqrestore(&ide_lock
, flags
);
1114 ide_abort(drive
, "drive reset");
1116 BUG_ON(HWGROUP(drive
)->handler
);
1118 /* Ensure nothing gets queued after we
1119 drop the lock. Reset will clear the busy */
1121 HWGROUP(drive
)->busy
= 1;
1122 spin_unlock_irqrestore(&ide_lock
, flags
);
1123 (void) ide_do_reset(drive
);
1128 case HDIO_GET_BUSSTATE
:
1129 if (!capable(CAP_SYS_ADMIN
))
1131 if (put_user(HWIF(drive
)->bus_state
, (long __user
*)arg
))
1135 case HDIO_SET_BUSSTATE
:
1136 if (!capable(CAP_SYS_ADMIN
))
1138 if (HWIF(drive
)->busproc
)
1139 return HWIF(drive
)->busproc(drive
, (int)arg
);
1146 mutex_lock(&ide_setting_mtx
);
1147 spin_lock_irqsave(&ide_lock
, flags
);
1149 spin_unlock_irqrestore(&ide_lock
, flags
);
1150 mutex_unlock(&ide_setting_mtx
);
1151 return err
>= 0 ? put_user(err
, (long __user
*)arg
) : err
;
1154 if (bdev
!= bdev
->bd_contains
)
1157 if (!capable(CAP_SYS_ADMIN
))
1160 mutex_lock(&ide_setting_mtx
);
1161 err
= setfunc(drive
, arg
);
1162 mutex_unlock(&ide_setting_mtx
);
1168 EXPORT_SYMBOL(generic_ide_ioctl
);
1171 * stridx() returns the offset of c within s,
1172 * or -1 if c is '\0' or not found within s.
1174 static int __init
stridx (const char *s
, char c
)
1176 char *i
= strchr(s
, c
);
1177 return (i
&& c
) ? i
- s
: -1;
1181 * match_parm() does parsing for ide_setup():
1183 * 1. the first char of s must be '='.
1184 * 2. if the remainder matches one of the supplied keywords,
1185 * the index (1 based) of the keyword is negated and returned.
1186 * 3. if the remainder is a series of no more than max_vals numbers
1187 * separated by commas, the numbers are saved in vals[] and a
1188 * count of how many were saved is returned. Base10 is assumed,
1189 * and base16 is allowed when prefixed with "0x".
1190 * 4. otherwise, zero is returned.
1192 static int __init
match_parm (char *s
, const char *keywords
[], int vals
[], int max_vals
)
1194 static const char *decimal
= "0123456789";
1195 static const char *hex
= "0123456789abcdef";
1200 * Try matching against the supplied keywords,
1201 * and return -(index+1) if we match one
1203 if (keywords
!= NULL
) {
1204 for (i
= 0; *keywords
!= NULL
; ++i
) {
1205 if (!strcmp(s
, *keywords
++))
1210 * Look for a series of no more than "max_vals"
1211 * numeric values separated by commas, in base10,
1212 * or base16 when prefixed with "0x".
1213 * Return a count of how many were found.
1215 for (n
= 0; (i
= stridx(decimal
, *s
)) >= 0;) {
1217 while ((i
= stridx(decimal
, *++s
)) >= 0)
1218 vals
[n
] = (vals
[n
] * 10) + i
;
1219 if (*s
== 'x' && !vals
[n
]) {
1220 while ((i
= stridx(hex
, *++s
)) >= 0)
1221 vals
[n
] = (vals
[n
] * 0x10) + i
;
1223 if (++n
== max_vals
)
1225 if (*s
== ',' || *s
== ';')
1231 return 0; /* zero = nothing matched */
1234 extern int probe_ali14xx
;
1235 extern int probe_umc8672
;
1236 extern int probe_dtc2278
;
1237 extern int probe_ht6560b
;
1238 extern int probe_qd65xx
;
1239 extern int cmd640_vlb
;
1241 static int __initdata is_chipset_set
[MAX_HWIFS
];
1244 * ide_setup() gets called VERY EARLY during initialization,
1245 * to handle kernel "command line" strings beginning with "hdx=" or "ide".
1247 * Remember to update Documentation/ide.txt if you change something here.
1249 static int __init
ide_setup(char *s
)
1254 unsigned int hw
, unit
;
1255 const char max_drive
= 'a' + ((MAX_HWIFS
* MAX_DRIVES
) - 1);
1256 const char max_hwif
= '0' + (MAX_HWIFS
- 1);
1259 if (strncmp(s
,"hd",2) == 0 && s
[2] == '=') /* hd= is for hd.c */
1260 return 0; /* driver and not us */
1262 if (strncmp(s
,"ide",3) && strncmp(s
,"idebus",6) && strncmp(s
,"hd",2))
1265 printk(KERN_INFO
"ide_setup: %s", s
);
1268 #ifdef CONFIG_BLK_DEV_IDEDOUBLER
1269 if (!strcmp(s
, "ide=doubler")) {
1270 extern int ide_doubler
;
1272 printk(" : Enabled support for IDE doublers\n");
1276 #endif /* CONFIG_BLK_DEV_IDEDOUBLER */
1278 if (!strcmp(s
, "ide=nodma")) {
1279 printk(" : Prevented DMA\n");
1281 goto obsolete_option
;
1284 #ifdef CONFIG_IDEPCI_PCIBUS_ORDER
1285 if (!strcmp(s
, "ide=reverse")) {
1286 ide_scan_direction
= 1;
1287 printk(" : Enabled support for IDE inverse scan order.\n");
1292 #ifdef CONFIG_BLK_DEV_IDEACPI
1293 if (!strcmp(s
, "ide=noacpi")) {
1294 //printk(" : Disable IDE ACPI support.\n");
1298 if (!strcmp(s
, "ide=acpigtf")) {
1299 //printk(" : Enable IDE ACPI _GTF support.\n");
1303 if (!strcmp(s
, "ide=acpionboot")) {
1304 //printk(" : Call IDE ACPI methods on boot.\n");
1305 ide_noacpionboot
= 0;
1308 #endif /* CONFIG_BLK_DEV_IDEACPI */
1311 * Look for drive options: "hdx="
1313 if (s
[0] == 'h' && s
[1] == 'd' && s
[2] >= 'a' && s
[2] <= max_drive
) {
1314 const char *hd_words
[] = {
1315 "none", "noprobe", "nowerr", "cdrom", "nodma",
1316 "autotune", "noautotune", "-8", "-9", "-10",
1317 "noflush", "remap", "remap63", "scsi", NULL
};
1319 hw
= unit
/ MAX_DRIVES
;
1320 unit
= unit
% MAX_DRIVES
;
1321 hwif
= &ide_hwifs
[hw
];
1322 drive
= &hwif
->drives
[unit
];
1323 if (strncmp(s
+ 4, "ide-", 4) == 0) {
1324 strlcpy(drive
->driver_req
, s
+ 4, sizeof(drive
->driver_req
));
1327 switch (match_parm(&s
[3], hd_words
, vals
, 3)) {
1328 case -1: /* "none" */
1329 case -2: /* "noprobe" */
1332 case -3: /* "nowerr" */
1333 drive
->bad_wstat
= BAD_R_STAT
;
1336 case -4: /* "cdrom" */
1338 drive
->media
= ide_cdrom
;
1339 /* an ATAPI device ignores DRDY */
1340 drive
->ready_stat
= 0;
1343 case -5: /* nodma */
1346 case -6: /* "autotune" */
1347 drive
->autotune
= IDE_TUNE_AUTO
;
1348 goto obsolete_option
;
1349 case -7: /* "noautotune" */
1350 drive
->autotune
= IDE_TUNE_NOAUTO
;
1351 goto obsolete_option
;
1352 case -11: /* noflush */
1355 case -12: /* "remap" */
1356 drive
->remap_0_to_1
= 1;
1358 case -13: /* "remap63" */
1361 case -14: /* "scsi" */
1364 case 3: /* cyl,head,sect */
1365 drive
->media
= ide_disk
;
1366 drive
->ready_stat
= READY_STAT
;
1367 drive
->cyl
= drive
->bios_cyl
= vals
[0];
1368 drive
->head
= drive
->bios_head
= vals
[1];
1369 drive
->sect
= drive
->bios_sect
= vals
[2];
1371 drive
->forced_geom
= 1;
1379 if (s
[0] != 'i' || s
[1] != 'd' || s
[2] != 'e')
1382 * Look for bus speed option: "idebus="
1384 if (s
[3] == 'b' && s
[4] == 'u' && s
[5] == 's') {
1385 if (match_parm(&s
[6], NULL
, vals
, 1) != 1)
1387 if (vals
[0] >= 20 && vals
[0] <= 66) {
1388 idebus_parameter
= vals
[0];
1390 printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
1394 * Look for interface options: "idex="
1396 if (s
[3] >= '0' && s
[3] <= max_hwif
) {
1398 * Be VERY CAREFUL changing this: note hardcoded indexes below
1399 * (-8, -9, -10) are reserved to ease the hardcoding.
1401 static const char *ide_words
[] = {
1402 "noprobe", "serialize", "minus3", "minus4",
1403 "reset", "minus6", "ata66", "minus8", "minus9",
1404 "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb",
1405 "dtc2278", "umc8672", "ali14xx", NULL
};
1410 hwif
= &ide_hwifs
[hw
];
1411 i
= match_parm(&s
[4], ide_words
, vals
, 3);
1414 * Cryptic check to ensure chipset not already set for hwif.
1415 * Note: we can't depend on hwif->chipset here.
1417 if ((i
>= -18 && i
<= -11) || (i
> 0 && i
<= 3)) {
1418 /* chipset already specified */
1419 if (is_chipset_set
[hw
])
1421 if (i
> -18 && i
<= -11) {
1422 /* these drivers are for "ide0=" only */
1425 /* chipset already specified for 2nd port */
1426 if (is_chipset_set
[hw
+1])
1429 is_chipset_set
[hw
] = 1;
1434 #ifdef CONFIG_BLK_DEV_ALI14XX
1435 case -17: /* "ali14xx" */
1439 #ifdef CONFIG_BLK_DEV_UMC8672
1440 case -16: /* "umc8672" */
1444 #ifdef CONFIG_BLK_DEV_DTC2278
1445 case -15: /* "dtc2278" */
1449 #ifdef CONFIG_BLK_DEV_CMD640
1450 case -14: /* "cmd640_vlb" */
1454 #ifdef CONFIG_BLK_DEV_HT6560B
1455 case -13: /* "ht6560b" */
1459 #ifdef CONFIG_BLK_DEV_QD65XX
1460 case -12: /* "qd65xx" */
1464 #ifdef CONFIG_BLK_DEV_4DRIVES
1465 case -11: /* "four" drives on one set of ports */
1467 ide_hwif_t
*mate
= &ide_hwifs
[hw
^1];
1468 mate
->drives
[0].select
.all
^= 0x20;
1469 mate
->drives
[1].select
.all
^= 0x20;
1470 hwif
->chipset
= mate
->chipset
= ide_4drives
;
1471 mate
->irq
= hwif
->irq
;
1472 memcpy(mate
->io_ports
, hwif
->io_ports
, sizeof(hwif
->io_ports
));
1475 hwif
->serialized
= mate
->serialized
= 1;
1476 goto obsolete_option
;
1478 #endif /* CONFIG_BLK_DEV_4DRIVES */
1479 case -10: /* minus10 */
1480 case -9: /* minus9 */
1481 case -8: /* minus8 */
1486 case -7: /* ata66 */
1487 #ifdef CONFIG_BLK_DEV_IDEPCI
1489 * Use ATA_CBL_PATA40_SHORT so drive side
1490 * cable detection is also overriden.
1492 hwif
->cbl
= ATA_CBL_PATA40_SHORT
;
1493 goto obsolete_option
;
1497 case -5: /* "reset" */
1499 goto obsolete_option
;
1500 case -2: /* "serialize" */
1501 hwif
->mate
= &ide_hwifs
[hw
^1];
1502 hwif
->mate
->mate
= hwif
;
1503 hwif
->serialized
= hwif
->mate
->serialized
= 1;
1504 goto obsolete_option
;
1506 case -1: /* "noprobe" */
1511 vals
[1] = vals
[0] + 0x206; /* default ctl */
1512 case 2: /* base,ctl */
1513 vals
[2] = 0; /* default irq = probe for it */
1514 case 3: /* base,ctl,irq */
1515 memset(&hwregs
, 0, sizeof(hwregs
));
1516 ide_init_hwif_ports(&hwregs
, vals
[0], vals
[1], &hwif
->irq
);
1517 memcpy(hwif
->io_ports
, hwregs
.io_ports
, sizeof(hwif
->io_ports
));
1518 hwif
->irq
= vals
[2];
1520 hwif
->chipset
= ide_forced
;
1521 goto obsolete_option
;
1523 case 0: goto bad_option
;
1525 printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
1530 printk(" -- BAD OPTION\n");
1533 printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n");
1536 printk("-- NOT SUPPORTED ON ide%d", hw
);
1542 EXPORT_SYMBOL(ide_lock
);
1544 static int ide_bus_match(struct device
*dev
, struct device_driver
*drv
)
1549 static char *media_string(ide_drive_t
*drive
)
1551 switch (drive
->media
) {
1567 static ssize_t
media_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1569 ide_drive_t
*drive
= to_ide_device(dev
);
1570 return sprintf(buf
, "%s\n", media_string(drive
));
1573 static ssize_t
drivename_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1575 ide_drive_t
*drive
= to_ide_device(dev
);
1576 return sprintf(buf
, "%s\n", drive
->name
);
1579 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1581 ide_drive_t
*drive
= to_ide_device(dev
);
1582 return sprintf(buf
, "ide:m-%s\n", media_string(drive
));
1585 static ssize_t
model_show(struct device
*dev
, struct device_attribute
*attr
,
1588 ide_drive_t
*drive
= to_ide_device(dev
);
1589 return sprintf(buf
, "%s\n", drive
->id
->model
);
1592 static ssize_t
firmware_show(struct device
*dev
, struct device_attribute
*attr
,
1595 ide_drive_t
*drive
= to_ide_device(dev
);
1596 return sprintf(buf
, "%s\n", drive
->id
->fw_rev
);
1599 static ssize_t
serial_show(struct device
*dev
, struct device_attribute
*attr
,
1602 ide_drive_t
*drive
= to_ide_device(dev
);
1603 return sprintf(buf
, "%s\n", drive
->id
->serial_no
);
1606 static struct device_attribute ide_dev_attrs
[] = {
1608 __ATTR_RO(drivename
),
1609 __ATTR_RO(modalias
),
1611 __ATTR_RO(firmware
),
1612 __ATTR(serial
, 0400, serial_show
, NULL
),
1616 static int ide_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
1618 ide_drive_t
*drive
= to_ide_device(dev
);
1620 add_uevent_var(env
, "MEDIA=%s", media_string(drive
));
1621 add_uevent_var(env
, "DRIVENAME=%s", drive
->name
);
1622 add_uevent_var(env
, "MODALIAS=ide:m-%s", media_string(drive
));
1626 static int generic_ide_probe(struct device
*dev
)
1628 ide_drive_t
*drive
= to_ide_device(dev
);
1629 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
1631 return drv
->probe
? drv
->probe(drive
) : -ENODEV
;
1634 static int generic_ide_remove(struct device
*dev
)
1636 ide_drive_t
*drive
= to_ide_device(dev
);
1637 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
1645 static void generic_ide_shutdown(struct device
*dev
)
1647 ide_drive_t
*drive
= to_ide_device(dev
);
1648 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
1650 if (dev
->driver
&& drv
->shutdown
)
1651 drv
->shutdown(drive
);
1654 struct bus_type ide_bus_type
= {
1656 .match
= ide_bus_match
,
1657 .uevent
= ide_uevent
,
1658 .probe
= generic_ide_probe
,
1659 .remove
= generic_ide_remove
,
1660 .shutdown
= generic_ide_shutdown
,
1661 .dev_attrs
= ide_dev_attrs
,
1662 .suspend
= generic_ide_suspend
,
1663 .resume
= generic_ide_resume
,
1666 EXPORT_SYMBOL_GPL(ide_bus_type
);
1669 * This is gets invoked once during initialization, to set *everything* up
1671 static int __init
ide_init(void)
1675 printk(KERN_INFO
"Uniform Multi-Platform E-IDE driver " REVISION
"\n");
1676 system_bus_speed
= ide_system_bus_speed();
1678 printk(KERN_INFO
"ide: Assuming %dMHz system bus speed "
1679 "for PIO modes%s\n", system_bus_speed
,
1680 idebus_parameter
? "" : "; override with idebus=xx");
1682 ret
= bus_register(&ide_bus_type
);
1684 printk(KERN_WARNING
"IDE: bus_register error: %d\n", ret
);
1696 static char *options
= NULL
;
1697 module_param(options
, charp
, 0);
1698 MODULE_LICENSE("GPL");
1700 static void __init
parse_options (char *line
)
1704 if (line
== NULL
|| !*line
)
1706 while ((line
= next
) != NULL
) {
1707 if ((next
= strchr(line
,' ')) != NULL
)
1709 if (!ide_setup(line
))
1710 printk (KERN_INFO
"Unknown option '%s'\n", line
);
1714 int __init
init_module (void)
1716 parse_options(options
);
1720 void __exit
cleanup_module (void)
1724 for (index
= 0; index
< MAX_HWIFS
; ++index
)
1725 ide_unregister(index
, 0, 0);
1729 bus_unregister(&ide_bus_type
);
1734 __setup("", ide_setup
);
1736 module_init(ide_init
);