2 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyright (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 #include <linux/module.h>
48 #include <linux/types.h>
49 #include <linux/string.h>
50 #include <linux/kernel.h>
51 #include <linux/interrupt.h>
52 #include <linux/major.h>
53 #include <linux/errno.h>
54 #include <linux/genhd.h>
55 #include <linux/slab.h>
56 #include <linux/init.h>
57 #include <linux/pci.h>
58 #include <linux/ide.h>
59 #include <linux/hdreg.h>
60 #include <linux/completion.h>
61 #include <linux/device.h>
64 /* default maximum number of failures */
65 #define IDE_DEFAULT_MAX_FAILURES 1
67 struct class *ide_port_class
;
69 static const u8 ide_hwif_to_major
[] = { IDE0_MAJOR
, IDE1_MAJOR
,
70 IDE2_MAJOR
, IDE3_MAJOR
,
71 IDE4_MAJOR
, IDE5_MAJOR
,
72 IDE6_MAJOR
, IDE7_MAJOR
,
73 IDE8_MAJOR
, IDE9_MAJOR
};
75 DEFINE_MUTEX(ide_cfg_mtx
);
77 __cacheline_aligned_in_smp
DEFINE_SPINLOCK(ide_lock
);
78 EXPORT_SYMBOL(ide_lock
);
80 static void ide_port_init_devices_data(ide_hwif_t
*);
83 * Do not even *think* about calling this!
85 void ide_init_port_data(ide_hwif_t
*hwif
, unsigned int index
)
87 /* bulk initialize hwif & drive info with zeros */
88 memset(hwif
, 0, sizeof(ide_hwif_t
));
90 /* fill in any non-zero initial values */
92 hwif
->major
= ide_hwif_to_major
[index
];
97 hwif
->name
[3] = '0' + index
;
99 init_completion(&hwif
->gendev_rel_comp
);
101 hwif
->tp_ops
= &default_tp_ops
;
103 ide_port_init_devices_data(hwif
);
106 static void ide_port_init_devices_data(ide_hwif_t
*hwif
)
110 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
111 ide_drive_t
*drive
= &hwif
->drives
[unit
];
112 u8 j
= (hwif
->index
* MAX_DRIVES
) + unit
;
114 memset(drive
, 0, sizeof(*drive
));
116 drive
->media
= ide_disk
;
117 drive
->select
= (unit
<< 4) | ATA_DEVICE_OBS
;
119 drive
->ready_stat
= ATA_DRDY
;
120 drive
->bad_wstat
= BAD_W_STAT
;
121 drive
->special
.b
.recalibrate
= 1;
122 drive
->special
.b
.set_geometry
= 1;
123 drive
->name
[0] = 'h';
124 drive
->name
[1] = 'd';
125 drive
->name
[2] = 'a' + j
;
126 drive
->max_failures
= IDE_DEFAULT_MAX_FAILURES
;
128 INIT_LIST_HEAD(&drive
->list
);
129 init_completion(&drive
->gendev_rel_comp
);
133 /* Called with ide_lock held. */
134 static void __ide_port_unregister_devices(ide_hwif_t
*hwif
)
138 for (i
= 0; i
< MAX_DRIVES
; i
++) {
139 ide_drive_t
*drive
= &hwif
->drives
[i
];
141 if (drive
->dev_flags
& IDE_DFLAG_PRESENT
) {
142 spin_unlock_irq(&ide_lock
);
143 device_unregister(&drive
->gendev
);
144 wait_for_completion(&drive
->gendev_rel_comp
);
145 spin_lock_irq(&ide_lock
);
150 void ide_port_unregister_devices(ide_hwif_t
*hwif
)
152 mutex_lock(&ide_cfg_mtx
);
153 spin_lock_irq(&ide_lock
);
154 __ide_port_unregister_devices(hwif
);
156 ide_port_init_devices_data(hwif
);
157 spin_unlock_irq(&ide_lock
);
158 mutex_unlock(&ide_cfg_mtx
);
160 EXPORT_SYMBOL_GPL(ide_port_unregister_devices
);
163 * ide_unregister - free an IDE interface
164 * @hwif: IDE interface
166 * Perform the final unregister of an IDE interface. At the moment
167 * we don't refcount interfaces so this will also get split up.
170 * The caller must not hold the IDE locks
171 * The drive present/vanishing is not yet properly locked
172 * Take care with the callbacks. These have been split to avoid
173 * deadlocking the IDE layer. The shutdown callback is called
174 * before we take the lock and free resources. It is up to the
175 * caller to be sure there is no pending I/O here, and that
176 * the interface will not be reopened (present/vanishing locking
177 * isn't yet done BTW). After we commit to the final kill we
178 * call the cleanup callback with the ide locks held.
180 * Unregister restores the hwif structures to the default state.
181 * This is raving bonkers.
184 void ide_unregister(ide_hwif_t
*hwif
)
187 ide_hwgroup_t
*hwgroup
;
190 BUG_ON(in_interrupt());
191 BUG_ON(irqs_disabled());
193 mutex_lock(&ide_cfg_mtx
);
195 spin_lock_irq(&ide_lock
);
197 __ide_port_unregister_devices(hwif
);
200 spin_unlock_irq(&ide_lock
);
202 ide_proc_unregister_port(hwif
);
204 hwgroup
= hwif
->hwgroup
;
206 * free the irq if we were the only hwif using it
210 if (g
->irq
== hwif
->irq
)
213 } while (g
!= hwgroup
->hwif
);
215 free_irq(hwif
->irq
, hwgroup
);
217 ide_remove_port_from_hwgroup(hwif
);
219 device_unregister(hwif
->portdev
);
220 device_unregister(&hwif
->gendev
);
221 wait_for_completion(&hwif
->gendev_rel_comp
);
224 * Remove us from the kernel's knowledge
226 blk_unregister_region(MKDEV(hwif
->major
, 0), MAX_DRIVES
<<PARTN_BITS
);
227 kfree(hwif
->sg_table
);
228 unregister_blkdev(hwif
->major
, hwif
->name
);
230 ide_release_dma_engine(hwif
);
232 mutex_unlock(&ide_cfg_mtx
);
235 void ide_init_port_hw(ide_hwif_t
*hwif
, hw_regs_t
*hw
)
237 memcpy(&hwif
->io_ports
, &hw
->io_ports
, sizeof(hwif
->io_ports
));
239 hwif
->chipset
= hw
->chipset
;
241 hwif
->gendev
.parent
= hw
->parent
? hw
->parent
: hw
->dev
;
242 hwif
->ack_intr
= hw
->ack_intr
;
243 hwif
->config_data
= hw
->config
;
247 * Locks for IDE setting functionality
250 DEFINE_MUTEX(ide_setting_mtx
);
252 ide_devset_get(io_32bit
, io_32bit
);
254 static int set_io_32bit(ide_drive_t
*drive
, int arg
)
256 if (drive
->dev_flags
& IDE_DFLAG_NO_IO_32BIT
)
259 if (arg
< 0 || arg
> 1 + (SUPPORT_VLB_SYNC
<< 1))
262 drive
->io_32bit
= arg
;
267 ide_devset_get_flag(ksettings
, IDE_DFLAG_KEEP_SETTINGS
);
269 static int set_ksettings(ide_drive_t
*drive
, int arg
)
271 if (arg
< 0 || arg
> 1)
275 drive
->dev_flags
|= IDE_DFLAG_KEEP_SETTINGS
;
277 drive
->dev_flags
&= ~IDE_DFLAG_KEEP_SETTINGS
;
282 ide_devset_get_flag(using_dma
, IDE_DFLAG_USING_DMA
);
284 static int set_using_dma(ide_drive_t
*drive
, int arg
)
286 #ifdef CONFIG_BLK_DEV_IDEDMA
289 if (arg
< 0 || arg
> 1)
292 if (ata_id_has_dma(drive
->id
) == 0)
295 if (drive
->hwif
->dma_ops
== NULL
)
301 if (ide_set_dma(drive
))
309 if (arg
< 0 || arg
> 1)
317 * handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
319 static int set_pio_mode_abuse(ide_hwif_t
*hwif
, u8 req_pio
)
328 return (hwif
->host_flags
& IDE_HFLAG_ABUSE_DMA_MODES
) ? 1 : 0;
331 return (hwif
->host_flags
& IDE_HFLAG_ABUSE_PREFETCH
) ? 1 : 0;
334 return (hwif
->host_flags
& IDE_HFLAG_ABUSE_FAST_DEVSEL
) ? 1 : 0;
340 static int set_pio_mode(ide_drive_t
*drive
, int arg
)
342 ide_hwif_t
*hwif
= drive
->hwif
;
343 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
345 if (arg
< 0 || arg
> 255)
348 if (port_ops
== NULL
|| port_ops
->set_pio_mode
== NULL
||
349 (hwif
->host_flags
& IDE_HFLAG_NO_SET_MODE
))
352 if (set_pio_mode_abuse(drive
->hwif
, arg
)) {
353 if (arg
== 8 || arg
== 9) {
356 /* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
357 spin_lock_irqsave(&ide_lock
, flags
);
358 port_ops
->set_pio_mode(drive
, arg
);
359 spin_unlock_irqrestore(&ide_lock
, flags
);
361 port_ops
->set_pio_mode(drive
, arg
);
363 int keep_dma
= !!(drive
->dev_flags
& IDE_DFLAG_USING_DMA
);
365 ide_set_pio(drive
, arg
);
367 if (hwif
->host_flags
& IDE_HFLAG_SET_PIO_MODE_KEEP_DMA
) {
376 ide_devset_get_flag(unmaskirq
, IDE_DFLAG_UNMASK
);
378 static int set_unmaskirq(ide_drive_t
*drive
, int arg
)
380 if (drive
->dev_flags
& IDE_DFLAG_NO_UNMASK
)
383 if (arg
< 0 || arg
> 1)
387 drive
->dev_flags
|= IDE_DFLAG_UNMASK
;
389 drive
->dev_flags
&= ~IDE_DFLAG_UNMASK
;
394 ide_ext_devset_rw_sync(io_32bit
, io_32bit
);
395 ide_ext_devset_rw_sync(keepsettings
, ksettings
);
396 ide_ext_devset_rw_sync(unmaskirq
, unmaskirq
);
397 ide_ext_devset_rw_sync(using_dma
, using_dma
);
398 __IDE_DEVSET(pio_mode
, DS_SYNC
, NULL
, set_pio_mode
);
400 static int generic_ide_suspend(struct device
*dev
, pm_message_t mesg
)
402 ide_drive_t
*drive
= dev
->driver_data
, *pair
= ide_get_pair_dev(drive
);
403 ide_hwif_t
*hwif
= HWIF(drive
);
405 struct request_pm_state rqpm
;
409 /* call ACPI _GTM only once */
410 if ((drive
->dn
& 1) == 0 || pair
== NULL
)
411 ide_acpi_get_timing(hwif
);
413 memset(&rqpm
, 0, sizeof(rqpm
));
414 memset(&args
, 0, sizeof(args
));
415 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
416 rq
->cmd_type
= REQ_TYPE_PM_SUSPEND
;
419 rqpm
.pm_step
= IDE_PM_START_SUSPEND
;
420 if (mesg
.event
== PM_EVENT_PRETHAW
)
421 mesg
.event
= PM_EVENT_FREEZE
;
422 rqpm
.pm_state
= mesg
.event
;
424 ret
= blk_execute_rq(drive
->queue
, NULL
, rq
, 0);
427 /* call ACPI _PS3 only after both devices are suspended */
428 if (ret
== 0 && ((drive
->dn
& 1) || pair
== NULL
))
429 ide_acpi_set_state(hwif
, 0);
434 static int generic_ide_resume(struct device
*dev
)
436 ide_drive_t
*drive
= dev
->driver_data
, *pair
= ide_get_pair_dev(drive
);
437 ide_hwif_t
*hwif
= HWIF(drive
);
439 struct request_pm_state rqpm
;
443 /* call ACPI _PS0 / _STM only once */
444 if ((drive
->dn
& 1) == 0 || pair
== NULL
) {
445 ide_acpi_set_state(hwif
, 1);
446 ide_acpi_push_timing(hwif
);
449 ide_acpi_exec_tfs(drive
);
451 memset(&rqpm
, 0, sizeof(rqpm
));
452 memset(&args
, 0, sizeof(args
));
453 rq
= blk_get_request(drive
->queue
, READ
, __GFP_WAIT
);
454 rq
->cmd_type
= REQ_TYPE_PM_RESUME
;
455 rq
->cmd_flags
|= REQ_PREEMPT
;
458 rqpm
.pm_step
= IDE_PM_START_RESUME
;
459 rqpm
.pm_state
= PM_EVENT_ON
;
461 err
= blk_execute_rq(drive
->queue
, NULL
, rq
, 1);
464 if (err
== 0 && dev
->driver
) {
465 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
475 * ide_device_get - get an additional reference to a ide_drive_t
476 * @drive: device to get a reference to
478 * Gets a reference to the ide_drive_t and increments the use count of the
479 * underlying LLDD module.
481 int ide_device_get(ide_drive_t
*drive
)
483 struct device
*host_dev
;
484 struct module
*module
;
486 if (!get_device(&drive
->gendev
))
489 host_dev
= drive
->hwif
->host
->dev
[0];
490 module
= host_dev
? host_dev
->driver
->owner
: NULL
;
492 if (module
&& !try_module_get(module
)) {
493 put_device(&drive
->gendev
);
499 EXPORT_SYMBOL_GPL(ide_device_get
);
502 * ide_device_put - release a reference to a ide_drive_t
503 * @drive: device to release a reference on
505 * Release a reference to the ide_drive_t and decrements the use count of
506 * the underlying LLDD module.
508 void ide_device_put(ide_drive_t
*drive
)
510 #ifdef CONFIG_MODULE_UNLOAD
511 struct device
*host_dev
= drive
->hwif
->host
->dev
[0];
512 struct module
*module
= host_dev
? host_dev
->driver
->owner
: NULL
;
517 put_device(&drive
->gendev
);
519 EXPORT_SYMBOL_GPL(ide_device_put
);
521 static int ide_bus_match(struct device
*dev
, struct device_driver
*drv
)
526 static char *media_string(ide_drive_t
*drive
)
528 switch (drive
->media
) {
544 static ssize_t
media_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
546 ide_drive_t
*drive
= to_ide_device(dev
);
547 return sprintf(buf
, "%s\n", media_string(drive
));
550 static ssize_t
drivename_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
552 ide_drive_t
*drive
= to_ide_device(dev
);
553 return sprintf(buf
, "%s\n", drive
->name
);
556 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
558 ide_drive_t
*drive
= to_ide_device(dev
);
559 return sprintf(buf
, "ide:m-%s\n", media_string(drive
));
562 static ssize_t
model_show(struct device
*dev
, struct device_attribute
*attr
,
565 ide_drive_t
*drive
= to_ide_device(dev
);
566 return sprintf(buf
, "%s\n", (char *)&drive
->id
[ATA_ID_PROD
]);
569 static ssize_t
firmware_show(struct device
*dev
, struct device_attribute
*attr
,
572 ide_drive_t
*drive
= to_ide_device(dev
);
573 return sprintf(buf
, "%s\n", (char *)&drive
->id
[ATA_ID_FW_REV
]);
576 static ssize_t
serial_show(struct device
*dev
, struct device_attribute
*attr
,
579 ide_drive_t
*drive
= to_ide_device(dev
);
580 return sprintf(buf
, "%s\n", (char *)&drive
->id
[ATA_ID_SERNO
]);
583 static struct device_attribute ide_dev_attrs
[] = {
585 __ATTR_RO(drivename
),
589 __ATTR(serial
, 0400, serial_show
, NULL
),
590 __ATTR(unload_heads
, 0644, ide_park_show
, ide_park_store
),
594 static int ide_uevent(struct device
*dev
, struct kobj_uevent_env
*env
)
596 ide_drive_t
*drive
= to_ide_device(dev
);
598 add_uevent_var(env
, "MEDIA=%s", media_string(drive
));
599 add_uevent_var(env
, "DRIVENAME=%s", drive
->name
);
600 add_uevent_var(env
, "MODALIAS=ide:m-%s", media_string(drive
));
604 static int generic_ide_probe(struct device
*dev
)
606 ide_drive_t
*drive
= to_ide_device(dev
);
607 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
609 return drv
->probe
? drv
->probe(drive
) : -ENODEV
;
612 static int generic_ide_remove(struct device
*dev
)
614 ide_drive_t
*drive
= to_ide_device(dev
);
615 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
623 static void generic_ide_shutdown(struct device
*dev
)
625 ide_drive_t
*drive
= to_ide_device(dev
);
626 ide_driver_t
*drv
= to_ide_driver(dev
->driver
);
628 if (dev
->driver
&& drv
->shutdown
)
629 drv
->shutdown(drive
);
632 struct bus_type ide_bus_type
= {
634 .match
= ide_bus_match
,
635 .uevent
= ide_uevent
,
636 .probe
= generic_ide_probe
,
637 .remove
= generic_ide_remove
,
638 .shutdown
= generic_ide_shutdown
,
639 .dev_attrs
= ide_dev_attrs
,
640 .suspend
= generic_ide_suspend
,
641 .resume
= generic_ide_resume
,
644 EXPORT_SYMBOL_GPL(ide_bus_type
);
647 EXPORT_SYMBOL_GPL(ide_vlb_clk
);
649 module_param_named(vlb_clock
, ide_vlb_clk
, int, 0);
650 MODULE_PARM_DESC(vlb_clock
, "VLB clock frequency (in MHz)");
653 EXPORT_SYMBOL_GPL(ide_pci_clk
);
655 module_param_named(pci_clock
, ide_pci_clk
, int, 0);
656 MODULE_PARM_DESC(pci_clock
, "PCI bus clock frequency (in MHz)");
658 static int ide_set_dev_param_mask(const char *s
, struct kernel_param
*kp
)
661 unsigned int *dev_param_mask
= (unsigned int *)kp
->arg
;
663 if (sscanf(s
, "%d.%d:%d", &a
, &b
, &j
) != 3 &&
664 sscanf(s
, "%d.%d", &a
, &b
) != 2)
667 i
= a
* MAX_DRIVES
+ b
;
669 if (i
>= MAX_HWIFS
* MAX_DRIVES
|| j
< 0 || j
> 1)
673 *dev_param_mask
|= (1 << i
);
675 *dev_param_mask
&= (1 << i
);
680 static unsigned int ide_nodma
;
682 module_param_call(nodma
, ide_set_dev_param_mask
, NULL
, &ide_nodma
, 0);
683 MODULE_PARM_DESC(nodma
, "disallow DMA for a device");
685 static unsigned int ide_noflush
;
687 module_param_call(noflush
, ide_set_dev_param_mask
, NULL
, &ide_noflush
, 0);
688 MODULE_PARM_DESC(noflush
, "disable flush requests for a device");
690 static unsigned int ide_noprobe
;
692 module_param_call(noprobe
, ide_set_dev_param_mask
, NULL
, &ide_noprobe
, 0);
693 MODULE_PARM_DESC(noprobe
, "skip probing for a device");
695 static unsigned int ide_nowerr
;
697 module_param_call(nowerr
, ide_set_dev_param_mask
, NULL
, &ide_nowerr
, 0);
698 MODULE_PARM_DESC(nowerr
, "ignore the ATA_DF bit for a device");
700 static unsigned int ide_cdroms
;
702 module_param_call(cdrom
, ide_set_dev_param_mask
, NULL
, &ide_cdroms
, 0);
703 MODULE_PARM_DESC(cdrom
, "force device as a CD-ROM");
711 static unsigned int ide_disks
;
712 static struct chs_geom ide_disks_chs
[MAX_HWIFS
* MAX_DRIVES
];
714 static int ide_set_disk_chs(const char *str
, struct kernel_param
*kp
)
716 int a
, b
, c
= 0, h
= 0, s
= 0, i
, j
= 1;
718 if (sscanf(str
, "%d.%d:%d,%d,%d", &a
, &b
, &c
, &h
, &s
) != 5 &&
719 sscanf(str
, "%d.%d:%d", &a
, &b
, &j
) != 3)
722 i
= a
* MAX_DRIVES
+ b
;
724 if (i
>= MAX_HWIFS
* MAX_DRIVES
|| j
< 0 || j
> 1)
727 if (c
> INT_MAX
|| h
> 255 || s
> 255)
731 ide_disks
|= (1 << i
);
733 ide_disks
&= (1 << i
);
735 ide_disks_chs
[i
].cyl
= c
;
736 ide_disks_chs
[i
].head
= h
;
737 ide_disks_chs
[i
].sect
= s
;
742 module_param_call(chs
, ide_set_disk_chs
, NULL
, NULL
, 0);
743 MODULE_PARM_DESC(chs
, "force device as a disk (using CHS)");
745 static void ide_dev_apply_params(ide_drive_t
*drive
, u8 unit
)
747 int i
= drive
->hwif
->index
* MAX_DRIVES
+ unit
;
749 if (ide_nodma
& (1 << i
)) {
750 printk(KERN_INFO
"ide: disallowing DMA for %s\n", drive
->name
);
751 drive
->dev_flags
|= IDE_DFLAG_NODMA
;
753 if (ide_noflush
& (1 << i
)) {
754 printk(KERN_INFO
"ide: disabling flush requests for %s\n",
756 drive
->dev_flags
|= IDE_DFLAG_NOFLUSH
;
758 if (ide_noprobe
& (1 << i
)) {
759 printk(KERN_INFO
"ide: skipping probe for %s\n", drive
->name
);
760 drive
->dev_flags
|= IDE_DFLAG_NOPROBE
;
762 if (ide_nowerr
& (1 << i
)) {
763 printk(KERN_INFO
"ide: ignoring the ATA_DF bit for %s\n",
765 drive
->bad_wstat
= BAD_R_STAT
;
767 if (ide_cdroms
& (1 << i
)) {
768 printk(KERN_INFO
"ide: forcing %s as a CD-ROM\n", drive
->name
);
769 drive
->dev_flags
|= IDE_DFLAG_PRESENT
;
770 drive
->media
= ide_cdrom
;
771 /* an ATAPI device ignores DRDY */
772 drive
->ready_stat
= 0;
774 if (ide_disks
& (1 << i
)) {
775 drive
->cyl
= drive
->bios_cyl
= ide_disks_chs
[i
].cyl
;
776 drive
->head
= drive
->bios_head
= ide_disks_chs
[i
].head
;
777 drive
->sect
= drive
->bios_sect
= ide_disks_chs
[i
].sect
;
779 printk(KERN_INFO
"ide: forcing %s as a disk (%d/%d/%d)\n",
781 drive
->cyl
, drive
->head
, drive
->sect
);
783 drive
->dev_flags
|= IDE_DFLAG_FORCED_GEOM
| IDE_DFLAG_PRESENT
;
784 drive
->media
= ide_disk
;
785 drive
->ready_stat
= ATA_DRDY
;
789 static unsigned int ide_ignore_cable
;
791 static int ide_set_ignore_cable(const char *s
, struct kernel_param
*kp
)
795 if (sscanf(s
, "%d:%d", &i
, &j
) != 2 && sscanf(s
, "%d", &i
) != 1)
798 if (i
>= MAX_HWIFS
|| j
< 0 || j
> 1)
802 ide_ignore_cable
|= (1 << i
);
804 ide_ignore_cable
&= (1 << i
);
809 module_param_call(ignore_cable
, ide_set_ignore_cable
, NULL
, NULL
, 0);
810 MODULE_PARM_DESC(ignore_cable
, "ignore cable detection");
812 void ide_port_apply_params(ide_hwif_t
*hwif
)
816 if (ide_ignore_cable
& (1 << hwif
->index
)) {
817 printk(KERN_INFO
"ide: ignoring cable detection for %s\n",
819 hwif
->cbl
= ATA_CBL_PATA40_SHORT
;
822 for (i
= 0; i
< MAX_DRIVES
; i
++)
823 ide_dev_apply_params(&hwif
->drives
[i
], i
);
827 * This is gets invoked once during initialization, to set *everything* up
829 static int __init
ide_init(void)
833 printk(KERN_INFO
"Uniform Multi-Platform E-IDE driver\n");
835 ret
= bus_register(&ide_bus_type
);
837 printk(KERN_WARNING
"IDE: bus_register error: %d\n", ret
);
841 ide_port_class
= class_create(THIS_MODULE
, "ide_port");
842 if (IS_ERR(ide_port_class
)) {
843 ret
= PTR_ERR(ide_port_class
);
852 bus_unregister(&ide_bus_type
);
857 static void __exit
ide_exit(void)
861 class_destroy(ide_port_class
);
863 bus_unregister(&ide_bus_type
);
866 module_init(ide_init
);
867 module_exit(ide_exit
);
869 MODULE_LICENSE("GPL");