2 * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
3 * Copyright (C) 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 IDE probe module, as evolved from hd.c and ide.c.
15 * -- increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot
19 #include <linux/module.h>
20 #include <linux/types.h>
21 #include <linux/string.h>
22 #include <linux/kernel.h>
23 #include <linux/timer.h>
25 #include <linux/interrupt.h>
26 #include <linux/major.h>
27 #include <linux/errno.h>
28 #include <linux/genhd.h>
29 #include <linux/slab.h>
30 #include <linux/delay.h>
31 #include <linux/ide.h>
32 #include <linux/spinlock.h>
33 #include <linux/kmod.h>
34 #include <linux/pci.h>
35 #include <linux/scatterlist.h>
37 #include <asm/byteorder.h>
39 #include <asm/uaccess.h>
43 * generic_id - add a generic drive id
44 * @drive: drive to make an ID block for
46 * Add a fake id field to the drive we are passed. This allows
47 * use to skip a ton of NULL checks (which people always miss)
48 * and make drive properties unconditional outside of this file
51 static void generic_id(ide_drive_t
*drive
)
53 drive
->id
->cyls
= drive
->cyl
;
54 drive
->id
->heads
= drive
->head
;
55 drive
->id
->sectors
= drive
->sect
;
56 drive
->id
->cur_cyls
= drive
->cyl
;
57 drive
->id
->cur_heads
= drive
->head
;
58 drive
->id
->cur_sectors
= drive
->sect
;
61 static void ide_disk_init_chs(ide_drive_t
*drive
)
63 struct hd_driveid
*id
= drive
->id
;
65 /* Extract geometry if we did not already have one for the drive */
66 if (!drive
->cyl
|| !drive
->head
|| !drive
->sect
) {
67 drive
->cyl
= drive
->bios_cyl
= id
->cyls
;
68 drive
->head
= drive
->bios_head
= id
->heads
;
69 drive
->sect
= drive
->bios_sect
= id
->sectors
;
72 /* Handle logical geometry translation by the drive */
73 if ((id
->field_valid
& 1) && id
->cur_cyls
&&
74 id
->cur_heads
&& (id
->cur_heads
<= 16) && id
->cur_sectors
) {
75 drive
->cyl
= id
->cur_cyls
;
76 drive
->head
= id
->cur_heads
;
77 drive
->sect
= id
->cur_sectors
;
80 /* Use physical geometry if what we have still makes no sense */
81 if (drive
->head
> 16 && id
->heads
&& id
->heads
<= 16) {
82 drive
->cyl
= id
->cyls
;
83 drive
->head
= id
->heads
;
84 drive
->sect
= id
->sectors
;
88 static void ide_disk_init_mult_count(ide_drive_t
*drive
)
90 struct hd_driveid
*id
= drive
->id
;
92 drive
->mult_count
= 0;
93 if (id
->max_multsect
) {
94 #ifdef CONFIG_IDEDISK_MULTI_MODE
95 id
->multsect
= ((id
->max_multsect
/2) > 1) ? id
->max_multsect
: 0;
96 id
->multsect_valid
= id
->multsect
? 1 : 0;
97 drive
->mult_req
= id
->multsect_valid
? id
->max_multsect
: 0;
98 drive
->special
.b
.set_multmode
= drive
->mult_req
? 1 : 0;
99 #else /* original, pre IDE-NFG, per request of AC */
101 if (drive
->mult_req
> id
->max_multsect
)
102 drive
->mult_req
= id
->max_multsect
;
103 if (drive
->mult_req
|| ((id
->multsect_valid
& 1) && id
->multsect
))
104 drive
->special
.b
.set_multmode
= 1;
110 * do_identify - identify a drive
111 * @drive: drive to identify
114 * Called when we have issued a drive identify command to
115 * read and parse the results. This function is run with
116 * interrupts disabled.
119 static inline void do_identify (ide_drive_t
*drive
, u8 cmd
)
121 ide_hwif_t
*hwif
= HWIF(drive
);
123 struct hd_driveid
*id
;
126 /* read 512 bytes of id info */
127 hwif
->ata_input_data(drive
, id
, SECTOR_WORDS
);
132 printk(KERN_INFO
"%s: dumping identify data\n", drive
->name
);
133 ide_dump_identify((u8
*)id
);
137 #if defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
139 * EATA SCSI controllers do a hardware ATA emulation:
140 * Ignore them if there is a driver for them available.
142 if ((id
->model
[0] == 'P' && id
->model
[1] == 'M') ||
143 (id
->model
[0] == 'S' && id
->model
[1] == 'K')) {
144 printk("%s: EATA SCSI HBA %.10s\n", drive
->name
, id
->model
);
147 #endif /* CONFIG_SCSI_EATA || CONFIG_SCSI_EATA_PIO */
150 * WIN_IDENTIFY returns little-endian info,
151 * WIN_PIDENTIFY *usually* returns little-endian info.
153 if (cmd
== WIN_PIDENTIFY
) {
154 if ((id
->model
[0] == 'N' && id
->model
[1] == 'E') /* NEC */
155 || (id
->model
[0] == 'F' && id
->model
[1] == 'X') /* Mitsumi */
156 || (id
->model
[0] == 'P' && id
->model
[1] == 'i'))/* Pioneer */
157 /* Vertos drives may still be weird */
160 ide_fixstring(id
->model
, sizeof(id
->model
), bswap
);
161 ide_fixstring(id
->fw_rev
, sizeof(id
->fw_rev
), bswap
);
162 ide_fixstring(id
->serial_no
, sizeof(id
->serial_no
), bswap
);
164 /* we depend on this a lot! */
165 id
->model
[sizeof(id
->model
)-1] = '\0';
167 if (strstr(id
->model
, "E X A B Y T E N E S T"))
170 printk("%s: %s, ", drive
->name
, id
->model
);
175 * Check for an ATAPI device
177 if (cmd
== WIN_PIDENTIFY
) {
178 u8 type
= (id
->config
>> 8) & 0x1f;
182 if (!strstr(id
->model
, "CD-ROM")) {
183 if (!strstr(id
->model
, "oppy") &&
184 !strstr(id
->model
, "poyp") &&
185 !strstr(id
->model
, "ZIP"))
186 printk("cdrom or floppy?, assuming ");
187 if (drive
->media
!= ide_cdrom
) {
189 drive
->removable
= 1;
193 /* Early cdrom models used zero */
196 drive
->removable
= 1;
198 /* kludge for Apple PowerBook internal zip */
199 if (!strstr(id
->model
, "CD-ROM") &&
200 strstr(id
->model
, "ZIP")) {
206 printk ("CD/DVD-ROM");
213 drive
->removable
= 1;
216 printk("UNKNOWN (type %d)", type
);
221 /* an ATAPI device ignores DRDY */
222 drive
->ready_stat
= 0;
227 * Not an ATAPI device: looks like a "regular" hard disk
231 * 0x848a = CompactFlash device
232 * These are *not* removable in Linux definition of the term
235 if ((id
->config
!= 0x848a) && (id
->config
& (1<<7)))
236 drive
->removable
= 1;
238 drive
->media
= ide_disk
;
239 printk("%s DISK drive\n", (id
->config
== 0x848a) ? "CFA" : "ATA" );
250 * actual_try_to_identify - send ata/atapi identify
251 * @drive: drive to identify
252 * @cmd: command to use
254 * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
255 * and waits for a response. It also monitors irqs while this is
256 * happening, in hope of automatically determining which one is
257 * being used by the interface.
259 * Returns: 0 device was identified
260 * 1 device timed-out (no response to identify request)
261 * 2 device aborted the command (refused to identify itself)
264 static int actual_try_to_identify (ide_drive_t
*drive
, u8 cmd
)
266 ide_hwif_t
*hwif
= HWIF(drive
);
267 int use_altstatus
= 0, rc
;
268 unsigned long timeout
;
271 /* take a deep breath */
274 if (hwif
->io_ports
[IDE_CONTROL_OFFSET
]) {
275 a
= ide_read_altstatus(drive
);
276 s
= ide_read_status(drive
);
277 if ((a
^ s
) & ~INDEX_STAT
)
278 /* ancient Seagate drives, broken interfaces */
279 printk(KERN_INFO
"%s: probing with STATUS(0x%02x) "
280 "instead of ALTSTATUS(0x%02x)\n",
283 /* use non-intrusive polling */
287 /* set features register for atapi
288 * identify command to be sure of reply
290 if ((cmd
== WIN_PIDENTIFY
))
291 /* disable dma & overlap */
292 hwif
->OUTB(0, hwif
->io_ports
[IDE_FEATURE_OFFSET
]);
294 /* ask drive for ID */
295 hwif
->OUTB(cmd
, hwif
->io_ports
[IDE_COMMAND_OFFSET
]);
297 timeout
= ((cmd
== WIN_IDENTIFY
) ? WAIT_WORSTCASE
: WAIT_PIDENTIFY
) / 2;
300 if (time_after(jiffies
, timeout
)) {
301 /* drive timed-out */
304 /* give drive a breather */
306 s
= use_altstatus
? ide_read_altstatus(drive
)
307 : ide_read_status(drive
);
308 } while (s
& BUSY_STAT
);
310 /* wait for IRQ and DRQ_STAT */
312 s
= ide_read_status(drive
);
314 if (OK_STAT(s
, DRQ_STAT
, BAD_R_STAT
)) {
317 /* local CPU only; some systems need this */
318 local_irq_save(flags
);
319 /* drive returned ID */
320 do_identify(drive
, cmd
);
321 /* drive responded with ID */
323 /* clear drive IRQ */
324 (void)ide_read_status(drive
);
325 local_irq_restore(flags
);
327 /* drive refused ID */
334 * try_to_identify - try to identify a drive
335 * @drive: drive to probe
336 * @cmd: command to use
338 * Issue the identify command and then do IRQ probing to
339 * complete the identification when needed by finding the
340 * IRQ the drive is attached to
343 static int try_to_identify (ide_drive_t
*drive
, u8 cmd
)
345 ide_hwif_t
*hwif
= HWIF(drive
);
348 unsigned long cookie
= 0;
351 * Disable device irq unless we need to
352 * probe for it. Otherwise we'll get spurious
353 * interrupts during the identify-phase that
354 * the irq handler isn't expecting.
356 if (hwif
->io_ports
[IDE_CONTROL_OFFSET
]) {
359 cookie
= probe_irq_on();
361 ide_set_irq(drive
, autoprobe
);
364 retval
= actual_try_to_identify(drive
, cmd
);
369 ide_set_irq(drive
, 0);
370 /* clear drive IRQ */
371 (void)ide_read_status(drive
);
373 irq
= probe_irq_off(cookie
);
378 /* Mmmm.. multiple IRQs..
379 * don't know which was ours
381 printk("%s: IRQ probe failed (0x%lx)\n",
382 drive
->name
, cookie
);
389 static int ide_busy_sleep(ide_hwif_t
*hwif
)
391 unsigned long timeout
= jiffies
+ WAIT_WORSTCASE
;
396 stat
= hwif
->INB(hwif
->io_ports
[IDE_STATUS_OFFSET
]);
397 if ((stat
& BUSY_STAT
) == 0)
399 } while (time_before(jiffies
, timeout
));
405 * do_probe - probe an IDE device
406 * @drive: drive to probe
407 * @cmd: command to use
409 * do_probe() has the difficult job of finding a drive if it exists,
410 * without getting hung up if it doesn't exist, without trampling on
411 * ethernet cards, and without leaving any IRQs dangling to haunt us later.
413 * If a drive is "known" to exist (from CMOS or kernel parameters),
414 * but does not respond right away, the probe will "hang in there"
415 * for the maximum wait time (about 30 seconds), otherwise it will
416 * exit much more quickly.
418 * Returns: 0 device was identified
419 * 1 device timed-out (no response to identify request)
420 * 2 device aborted the command (refused to identify itself)
421 * 3 bad status from device (possible for ATAPI drives)
422 * 4 probe was not attempted because failure was obvious
425 static int do_probe (ide_drive_t
*drive
, u8 cmd
)
427 ide_hwif_t
*hwif
= HWIF(drive
);
431 if (drive
->present
) {
432 /* avoid waiting for inappropriate probes */
433 if ((drive
->media
!= ide_disk
) && (cmd
== WIN_IDENTIFY
))
437 printk("probing for %s: present=%d, media=%d, probetype=%s\n",
438 drive
->name
, drive
->present
, drive
->media
,
439 (cmd
== WIN_IDENTIFY
) ? "ATA" : "ATAPI");
442 /* needed for some systems
443 * (e.g. crw9624 as drive0 with disk as slave)
448 if (hwif
->INB(hwif
->io_ports
[IDE_SELECT_OFFSET
]) != drive
->select
.all
&&
450 if (drive
->select
.b
.unit
!= 0) {
451 /* exit with drive0 selected */
452 SELECT_DRIVE(&hwif
->drives
[0]);
453 /* allow BUSY_STAT to assert & clear */
456 /* no i/f present: mmm.. this should be a 4 -ml */
460 stat
= ide_read_status(drive
);
462 if (OK_STAT(stat
, READY_STAT
, BUSY_STAT
) ||
463 drive
->present
|| cmd
== WIN_PIDENTIFY
) {
464 /* send cmd and wait */
465 if ((rc
= try_to_identify(drive
, cmd
))) {
466 /* failed: try again */
467 rc
= try_to_identify(drive
,cmd
);
470 stat
= ide_read_status(drive
);
472 if (stat
== (BUSY_STAT
| READY_STAT
))
475 if ((rc
== 1 && cmd
== WIN_PIDENTIFY
) &&
476 ((drive
->autotune
== IDE_TUNE_DEFAULT
) ||
477 (drive
->autotune
== IDE_TUNE_AUTO
))) {
478 printk(KERN_ERR
"%s: no response (status = 0x%02x), "
479 "resetting drive\n", drive
->name
, stat
);
481 hwif
->OUTB(drive
->select
.all
,
482 hwif
->io_ports
[IDE_SELECT_OFFSET
]);
485 hwif
->io_ports
[IDE_COMMAND_OFFSET
]);
486 (void)ide_busy_sleep(hwif
);
487 rc
= try_to_identify(drive
, cmd
);
490 /* ensure drive IRQ is clear */
491 stat
= ide_read_status(drive
);
494 printk(KERN_ERR
"%s: no response (status = 0x%02x)\n",
497 /* not present or maybe ATAPI */
500 if (drive
->select
.b
.unit
!= 0) {
501 /* exit with drive0 selected */
502 SELECT_DRIVE(&hwif
->drives
[0]);
504 /* ensure drive irq is clear */
505 (void)ide_read_status(drive
);
513 static void enable_nest (ide_drive_t
*drive
)
515 ide_hwif_t
*hwif
= HWIF(drive
);
518 printk("%s: enabling %s -- ", hwif
->name
, drive
->id
->model
);
521 hwif
->OUTB(EXABYTE_ENABLE_NEST
, hwif
->io_ports
[IDE_COMMAND_OFFSET
]);
523 if (ide_busy_sleep(hwif
)) {
524 printk(KERN_CONT
"failed (timeout)\n");
530 stat
= ide_read_status(drive
);
532 if (!OK_STAT(stat
, 0, BAD_STAT
))
533 printk(KERN_CONT
"failed (status = 0x%02x)\n", stat
);
535 printk(KERN_CONT
"success\n");
537 /* if !(success||timed-out) */
538 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
539 /* look for ATAPI device */
540 (void) do_probe(drive
, WIN_PIDENTIFY
);
545 * probe_for_drives - upper level drive probe
546 * @drive: drive to probe for
548 * probe_for_drive() tests for existence of a given drive using do_probe()
549 * and presents things to the user as needed.
551 * Returns: 0 no device was found
552 * 1 device was found (note: drive->present might
556 static inline u8
probe_for_drive (ide_drive_t
*drive
)
559 * In order to keep things simple we have an id
560 * block for all drives at all times. If the device
561 * is pre ATA or refuses ATA/ATAPI identify we
562 * will add faked data to this.
564 * Also note that 0 everywhere means "can't do X"
567 drive
->id
= kzalloc(SECTOR_WORDS
*4, GFP_KERNEL
);
569 if(drive
->id
== NULL
)
571 printk(KERN_ERR
"ide: out of memory for id data.\n");
574 strcpy(drive
->id
->model
, "UNKNOWN");
579 /* if !(success||timed-out) */
580 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
581 /* look for ATAPI device */
582 (void) do_probe(drive
, WIN_PIDENTIFY
);
585 /* drive not found */
587 if (strstr(drive
->id
->model
, "E X A B Y T E N E S T"))
590 /* identification failed? */
591 if (!drive
->id_read
) {
592 if (drive
->media
== ide_disk
) {
593 printk(KERN_INFO
"%s: non-IDE drive, CHS=%d/%d/%d\n",
594 drive
->name
, drive
->cyl
,
595 drive
->head
, drive
->sect
);
596 } else if (drive
->media
== ide_cdrom
) {
597 printk(KERN_INFO
"%s: ATAPI cdrom (?)\n", drive
->name
);
600 printk(KERN_WARNING
"%s: Unknown device on bus refused identification. Ignoring.\n", drive
->name
);
604 /* drive was found */
608 /* The drive wasn't being helpful. Add generic info only */
609 if (drive
->id_read
== 0) {
614 if (drive
->media
== ide_disk
) {
615 ide_disk_init_chs(drive
);
616 ide_disk_init_mult_count(drive
);
619 return drive
->present
;
622 static void hwif_release_dev (struct device
*dev
)
624 ide_hwif_t
*hwif
= container_of(dev
, ide_hwif_t
, gendev
);
626 complete(&hwif
->gendev_rel_comp
);
629 static int ide_register_port(ide_hwif_t
*hwif
)
633 /* register with global device tree */
634 strlcpy(hwif
->gendev
.bus_id
,hwif
->name
,BUS_ID_SIZE
);
635 hwif
->gendev
.driver_data
= hwif
;
636 if (hwif
->gendev
.parent
== NULL
) {
638 hwif
->gendev
.parent
= hwif
->dev
;
640 /* Would like to do = &device_legacy */
641 hwif
->gendev
.parent
= NULL
;
643 hwif
->gendev
.release
= hwif_release_dev
;
644 ret
= device_register(&hwif
->gendev
);
646 printk(KERN_WARNING
"IDE: %s: device_register error: %d\n",
651 get_device(&hwif
->gendev
);
653 hwif
->portdev
= device_create(ide_port_class
, &hwif
->gendev
,
654 MKDEV(0, 0), hwif
->name
);
655 if (IS_ERR(hwif
->portdev
)) {
656 ret
= PTR_ERR(hwif
->portdev
);
657 device_unregister(&hwif
->gendev
);
659 dev_set_drvdata(hwif
->portdev
, hwif
);
665 * ide_port_wait_ready - wait for port to become ready
668 * This is needed on some PPCs and a bunch of BIOS-less embedded
669 * platforms. Typical cases are:
671 * - The firmware hard reset the disk before booting the kernel,
672 * the drive is still doing it's poweron-reset sequence, that
673 * can take up to 30 seconds.
675 * - The firmware does nothing (or no firmware), the device is
676 * still in POST state (same as above actually).
678 * - Some CD/DVD/Writer combo drives tend to drive the bus during
679 * their reset sequence even when they are non-selected slave
680 * devices, thus preventing discovery of the main HD.
682 * Doing this wait-for-non-busy should not harm any existing
683 * configuration and fix some issues like the above.
687 * Returns 0 on success, error code (< 0) otherwise.
690 static int ide_port_wait_ready(ide_hwif_t
*hwif
)
694 printk(KERN_DEBUG
"Probing IDE interface %s...\n", hwif
->name
);
696 /* Let HW settle down a bit from whatever init state we
700 /* Wait for BSY bit to go away, spec timeout is 30 seconds,
701 * I know of at least one disk who takes 31 seconds, I use 35
704 rc
= ide_wait_not_busy(hwif
, 35000);
708 /* Now make sure both master & slave are ready */
709 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
710 ide_drive_t
*drive
= &hwif
->drives
[unit
];
712 /* Ignore disks that we will not probe for later. */
713 if (!drive
->noprobe
|| drive
->present
) {
715 ide_set_irq(drive
, 1);
717 rc
= ide_wait_not_busy(hwif
, 35000);
721 printk(KERN_DEBUG
"%s: ide_wait_not_busy() skipped\n",
725 /* Exit function with master reselected (let's be sane) */
727 SELECT_DRIVE(&hwif
->drives
[0]);
733 * ide_undecoded_slave - look for bad CF adapters
736 * Analyse the drives on the interface and attempt to decide if we
737 * have the same drive viewed twice. This occurs with crap CF adapters
738 * and PCMCIA sometimes.
741 void ide_undecoded_slave(ide_drive_t
*drive1
)
743 ide_drive_t
*drive0
= &drive1
->hwif
->drives
[0];
745 if ((drive1
->dn
& 1) == 0 || drive0
->present
== 0)
748 /* If the models don't match they are not the same product */
749 if (strcmp(drive0
->id
->model
, drive1
->id
->model
))
752 /* Serial numbers do not match */
753 if (strncmp(drive0
->id
->serial_no
, drive1
->id
->serial_no
, 20))
756 /* No serial number, thankfully very rare for CF */
757 if (drive0
->id
->serial_no
[0] == 0)
760 /* Appears to be an IDE flash adapter with decode bugs */
761 printk(KERN_WARNING
"ide-probe: ignoring undecoded slave\n");
766 EXPORT_SYMBOL_GPL(ide_undecoded_slave
);
768 static int ide_probe_port(ide_hwif_t
*hwif
)
772 int unit
, rc
= -ENODEV
;
774 BUG_ON(hwif
->present
);
776 if (hwif
->drives
[0].noprobe
&& hwif
->drives
[1].noprobe
)
780 * We must always disable IRQ, as probe_for_drive will assert IRQ, but
781 * we'll install our IRQ driver much later...
785 disable_irq(hwif
->irq
);
787 local_irq_set(flags
);
789 if (ide_port_wait_ready(hwif
) == -EBUSY
)
790 printk(KERN_DEBUG
"%s: Wait for ready failed before probe !\n", hwif
->name
);
793 * Second drive should only exist if first drive was found,
794 * but a lot of cdrom drives are configured as single slaves.
796 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
797 ide_drive_t
*drive
= &hwif
->drives
[unit
];
798 drive
->dn
= (hwif
->channel
? 2 : 0) + unit
;
799 (void) probe_for_drive(drive
);
803 if (hwif
->io_ports
[IDE_CONTROL_OFFSET
] && hwif
->reset
) {
804 printk(KERN_WARNING
"%s: reset\n", hwif
->name
);
805 hwif
->OUTB(12, hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
807 hwif
->OUTB(8, hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
808 (void)ide_busy_sleep(hwif
);
810 local_irq_restore(flags
);
812 * Use cached IRQ number. It might be (and is...) changed by probe
821 static void ide_port_tune_devices(ide_hwif_t
*hwif
)
823 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
826 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
827 ide_drive_t
*drive
= &hwif
->drives
[unit
];
829 if (drive
->present
&& port_ops
&& port_ops
->quirkproc
)
830 port_ops
->quirkproc(drive
);
833 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
834 ide_drive_t
*drive
= &hwif
->drives
[unit
];
836 if (drive
->present
) {
837 if (drive
->autotune
== IDE_TUNE_AUTO
)
838 ide_set_max_pio(drive
);
840 if (drive
->autotune
!= IDE_TUNE_DEFAULT
&&
841 drive
->autotune
!= IDE_TUNE_AUTO
)
846 if (hwif
->dma_host_set
)
851 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
852 ide_drive_t
*drive
= &hwif
->drives
[unit
];
854 if (hwif
->host_flags
& IDE_HFLAG_NO_IO_32BIT
)
855 drive
->no_io_32bit
= 1;
857 drive
->no_io_32bit
= drive
->id
->dword_io
? 1 : 0;
863 * save_match() is used to simplify logic in init_irq() below.
865 * A loophole here is that we may not know about a particular
866 * hwif's irq until after that hwif is actually probed/initialized..
867 * This could be a problem for the case where an hwif is on a
868 * dual interface that requires serialization (eg. cmd640) and another
869 * hwif using one of the same irqs is initialized beforehand.
871 * This routine detects and reports such situations, but does not fix them.
873 static void save_match(ide_hwif_t
*hwif
, ide_hwif_t
*new, ide_hwif_t
**match
)
875 ide_hwif_t
*m
= *match
;
877 if (m
&& m
->hwgroup
&& m
->hwgroup
!= new->hwgroup
) {
880 printk("%s: potential irq problem with %s and %s\n",
881 hwif
->name
, new->name
, m
->name
);
883 if (!m
|| m
->irq
!= hwif
->irq
) /* don't undo a prior perfect match */
886 #endif /* MAX_HWIFS > 1 */
891 static int ide_init_queue(ide_drive_t
*drive
)
893 struct request_queue
*q
;
894 ide_hwif_t
*hwif
= HWIF(drive
);
895 int max_sectors
= 256;
896 int max_sg_entries
= PRD_ENTRIES
;
899 * Our default set up assumes the normal IDE case,
900 * that is 64K segmenting, standard PRD setup
901 * and LBA28. Some drivers then impose their own
902 * limits and LBA48 we could raise it but as yet
906 q
= blk_init_queue_node(do_ide_request
, &ide_lock
, hwif_to_node(hwif
));
910 q
->queuedata
= drive
;
911 blk_queue_segment_boundary(q
, 0xffff);
913 if (hwif
->rqsize
< max_sectors
)
914 max_sectors
= hwif
->rqsize
;
915 blk_queue_max_sectors(q
, max_sectors
);
918 /* When we have an IOMMU, we may have a problem where pci_map_sg()
919 * creates segments that don't completely match our boundary
920 * requirements and thus need to be broken up again. Because it
921 * doesn't align properly either, we may actually have to break up
922 * to more segments than what was we got in the first place, a max
923 * worst case is twice as many.
924 * This will be fixed once we teach pci_map_sg() about our boundary
925 * requirements, hopefully soon. *FIXME*
927 if (!PCI_DMA_BUS_IS_PHYS
)
928 max_sg_entries
>>= 1;
929 #endif /* CONFIG_PCI */
931 blk_queue_max_hw_segments(q
, max_sg_entries
);
932 blk_queue_max_phys_segments(q
, max_sg_entries
);
934 /* assign drive queue */
937 /* needs drive->queue to be set */
938 ide_toggle_bounce(drive
, 1);
943 static void ide_add_drive_to_hwgroup(ide_drive_t
*drive
)
945 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
947 spin_lock_irq(&ide_lock
);
948 if (!hwgroup
->drive
) {
949 /* first drive for hwgroup. */
951 hwgroup
->drive
= drive
;
952 hwgroup
->hwif
= HWIF(hwgroup
->drive
);
954 drive
->next
= hwgroup
->drive
->next
;
955 hwgroup
->drive
->next
= drive
;
957 spin_unlock_irq(&ide_lock
);
961 * For any present drive:
962 * - allocate the block device queue
963 * - link drive into the hwgroup
965 static void ide_port_setup_devices(ide_hwif_t
*hwif
)
969 mutex_lock(&ide_cfg_mtx
);
970 for (i
= 0; i
< MAX_DRIVES
; i
++) {
971 ide_drive_t
*drive
= &hwif
->drives
[i
];
976 if (ide_init_queue(drive
)) {
977 printk(KERN_ERR
"ide: failed to init %s\n",
982 ide_add_drive_to_hwgroup(drive
);
984 mutex_unlock(&ide_cfg_mtx
);
988 * This routine sets up the irq for an ide interface, and creates a new
989 * hwgroup for the irq/hwif if none was previously assigned.
991 * Much of the code is for correctly detecting/handling irq sharing
992 * and irq serialization situations. This is somewhat complex because
993 * it handles static as well as dynamic (PCMCIA) IDE interfaces.
995 static int init_irq (ide_hwif_t
*hwif
)
998 ide_hwgroup_t
*hwgroup
;
999 ide_hwif_t
*match
= NULL
;
1002 BUG_ON(in_interrupt());
1003 BUG_ON(irqs_disabled());
1004 BUG_ON(hwif
== NULL
);
1006 mutex_lock(&ide_cfg_mtx
);
1007 hwif
->hwgroup
= NULL
;
1010 * Group up with any other hwifs that share our irq(s).
1012 for (index
= 0; index
< MAX_HWIFS
; index
++) {
1013 ide_hwif_t
*h
= &ide_hwifs
[index
];
1014 if (h
->hwgroup
) { /* scan only initialized hwif's */
1015 if (hwif
->irq
== h
->irq
) {
1016 hwif
->sharing_irq
= h
->sharing_irq
= 1;
1017 if (hwif
->chipset
!= ide_pci
||
1018 h
->chipset
!= ide_pci
) {
1019 save_match(hwif
, h
, &match
);
1022 if (hwif
->serialized
) {
1023 if (hwif
->mate
&& hwif
->mate
->irq
== h
->irq
)
1024 save_match(hwif
, h
, &match
);
1026 if (h
->serialized
) {
1027 if (h
->mate
&& hwif
->irq
== h
->mate
->irq
)
1028 save_match(hwif
, h
, &match
);
1032 #endif /* MAX_HWIFS > 1 */
1034 * If we are still without a hwgroup, then form a new one
1037 hwgroup
= match
->hwgroup
;
1038 hwif
->hwgroup
= hwgroup
;
1040 * Link us into the hwgroup.
1041 * This must be done early, do ensure that unexpected_intr
1042 * can find the hwif and prevent irq storms.
1043 * No drives are attached to the new hwif, choose_drive
1044 * can't do anything stupid (yet).
1045 * Add ourself as the 2nd entry to the hwgroup->hwif
1046 * linked list, the first entry is the hwif that owns
1047 * hwgroup->handler - do not change that.
1049 spin_lock_irq(&ide_lock
);
1050 hwif
->next
= hwgroup
->hwif
->next
;
1051 hwgroup
->hwif
->next
= hwif
;
1052 BUG_ON(hwif
->next
== hwif
);
1053 spin_unlock_irq(&ide_lock
);
1055 hwgroup
= kmalloc_node(sizeof(*hwgroup
), GFP_KERNEL
|__GFP_ZERO
,
1056 hwif_to_node(hwif
));
1057 if (hwgroup
== NULL
)
1060 hwif
->hwgroup
= hwgroup
;
1061 hwgroup
->hwif
= hwif
->next
= hwif
;
1063 init_timer(&hwgroup
->timer
);
1064 hwgroup
->timer
.function
= &ide_timer_expiry
;
1065 hwgroup
->timer
.data
= (unsigned long) hwgroup
;
1069 * Allocate the irq, if not already obtained for another hwif
1071 if (!match
|| match
->irq
!= hwif
->irq
) {
1073 #if defined(__mc68000__)
1075 #endif /* __mc68000__ */
1077 if (IDE_CHIPSET_IS_PCI(hwif
->chipset
))
1080 if (hwif
->io_ports
[IDE_CONTROL_OFFSET
])
1082 hwif
->OUTB(0x08, hwif
->io_ports
[IDE_CONTROL_OFFSET
]);
1084 if (request_irq(hwif
->irq
,&ide_intr
,sa
,hwif
->name
,hwgroup
))
1088 if (!hwif
->rqsize
) {
1089 if ((hwif
->host_flags
& IDE_HFLAG_NO_LBA48
) ||
1090 (hwif
->host_flags
& IDE_HFLAG_NO_LBA48_DMA
))
1093 hwif
->rqsize
= 65536;
1096 #if !defined(__mc68000__)
1097 printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif
->name
,
1098 hwif
->io_ports
[IDE_DATA_OFFSET
],
1099 hwif
->io_ports
[IDE_DATA_OFFSET
]+7,
1100 hwif
->io_ports
[IDE_CONTROL_OFFSET
], hwif
->irq
);
1102 printk("%s at 0x%08lx on irq %d", hwif
->name
,
1103 hwif
->io_ports
[IDE_DATA_OFFSET
], hwif
->irq
);
1104 #endif /* __mc68000__ */
1106 printk(" (%sed with %s)",
1107 hwif
->sharing_irq
? "shar" : "serializ", match
->name
);
1110 mutex_unlock(&ide_cfg_mtx
);
1113 ide_remove_port_from_hwgroup(hwif
);
1115 mutex_unlock(&ide_cfg_mtx
);
1119 static int ata_lock(dev_t dev
, void *data
)
1121 /* FIXME: we want to pin hwif down */
1125 static struct kobject
*ata_probe(dev_t dev
, int *part
, void *data
)
1127 ide_hwif_t
*hwif
= data
;
1128 int unit
= *part
>> PARTN_BITS
;
1129 ide_drive_t
*drive
= &hwif
->drives
[unit
];
1130 if (!drive
->present
)
1133 if (drive
->media
== ide_disk
)
1134 request_module("ide-disk");
1136 request_module("ide-scsi");
1137 if (drive
->media
== ide_cdrom
|| drive
->media
== ide_optical
)
1138 request_module("ide-cd");
1139 if (drive
->media
== ide_tape
)
1140 request_module("ide-tape");
1141 if (drive
->media
== ide_floppy
)
1142 request_module("ide-floppy");
1147 static struct kobject
*exact_match(dev_t dev
, int *part
, void *data
)
1149 struct gendisk
*p
= data
;
1150 *part
&= (1 << PARTN_BITS
) - 1;
1151 return &p
->dev
.kobj
;
1154 static int exact_lock(dev_t dev
, void *data
)
1156 struct gendisk
*p
= data
;
1163 void ide_register_region(struct gendisk
*disk
)
1165 blk_register_region(MKDEV(disk
->major
, disk
->first_minor
),
1166 disk
->minors
, NULL
, exact_match
, exact_lock
, disk
);
1169 EXPORT_SYMBOL_GPL(ide_register_region
);
1171 void ide_unregister_region(struct gendisk
*disk
)
1173 blk_unregister_region(MKDEV(disk
->major
, disk
->first_minor
),
1177 EXPORT_SYMBOL_GPL(ide_unregister_region
);
1179 void ide_init_disk(struct gendisk
*disk
, ide_drive_t
*drive
)
1181 ide_hwif_t
*hwif
= drive
->hwif
;
1182 unsigned int unit
= (drive
->select
.all
>> 4) & 1;
1184 disk
->major
= hwif
->major
;
1185 disk
->first_minor
= unit
<< PARTN_BITS
;
1186 sprintf(disk
->disk_name
, "hd%c", 'a' + hwif
->index
* MAX_DRIVES
+ unit
);
1187 disk
->queue
= drive
->queue
;
1190 EXPORT_SYMBOL_GPL(ide_init_disk
);
1192 static void ide_remove_drive_from_hwgroup(ide_drive_t
*drive
)
1194 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
1196 if (drive
== drive
->next
) {
1197 /* special case: last drive from hwgroup. */
1198 BUG_ON(hwgroup
->drive
!= drive
);
1199 hwgroup
->drive
= NULL
;
1203 walk
= hwgroup
->drive
;
1204 while (walk
->next
!= drive
)
1206 walk
->next
= drive
->next
;
1207 if (hwgroup
->drive
== drive
) {
1208 hwgroup
->drive
= drive
->next
;
1209 hwgroup
->hwif
= hwgroup
->drive
->hwif
;
1212 BUG_ON(hwgroup
->drive
== drive
);
1215 static void drive_release_dev (struct device
*dev
)
1217 ide_drive_t
*drive
= container_of(dev
, ide_drive_t
, gendev
);
1219 ide_proc_unregister_device(drive
);
1221 spin_lock_irq(&ide_lock
);
1222 ide_remove_drive_from_hwgroup(drive
);
1226 /* Messed up locking ... */
1227 spin_unlock_irq(&ide_lock
);
1228 blk_cleanup_queue(drive
->queue
);
1229 spin_lock_irq(&ide_lock
);
1230 drive
->queue
= NULL
;
1231 spin_unlock_irq(&ide_lock
);
1233 complete(&drive
->gendev_rel_comp
);
1236 #ifndef ide_default_irq
1237 #define ide_default_irq(irq) 0
1240 static int hwif_init(ide_hwif_t
*hwif
)
1245 if (!(hwif
->irq
= ide_default_irq(hwif
->io_ports
[IDE_DATA_OFFSET
])))
1247 printk("%s: DISABLED, NO IRQ\n", hwif
->name
);
1252 if (register_blkdev(hwif
->major
, hwif
->name
))
1255 if (!hwif
->sg_max_nents
)
1256 hwif
->sg_max_nents
= PRD_ENTRIES
;
1258 hwif
->sg_table
= kmalloc(sizeof(struct scatterlist
)*hwif
->sg_max_nents
,
1260 if (!hwif
->sg_table
) {
1261 printk(KERN_ERR
"%s: unable to allocate SG table.\n", hwif
->name
);
1265 sg_init_table(hwif
->sg_table
, hwif
->sg_max_nents
);
1267 if (init_irq(hwif
) == 0)
1270 old_irq
= hwif
->irq
;
1272 * It failed to initialise. Find the default IRQ for
1273 * this port and try that.
1275 if (!(hwif
->irq
= ide_default_irq(hwif
->io_ports
[IDE_DATA_OFFSET
]))) {
1276 printk("%s: Disabled unable to get IRQ %d.\n",
1277 hwif
->name
, old_irq
);
1280 if (init_irq(hwif
)) {
1281 printk("%s: probed IRQ %d and default IRQ %d failed.\n",
1282 hwif
->name
, old_irq
, hwif
->irq
);
1285 printk("%s: probed IRQ %d failed, using default.\n",
1286 hwif
->name
, hwif
->irq
);
1289 blk_register_region(MKDEV(hwif
->major
, 0), MAX_DRIVES
<< PARTN_BITS
,
1290 THIS_MODULE
, ata_probe
, ata_lock
, hwif
);
1294 unregister_blkdev(hwif
->major
, hwif
->name
);
1298 static void hwif_register_devices(ide_hwif_t
*hwif
)
1302 for (i
= 0; i
< MAX_DRIVES
; i
++) {
1303 ide_drive_t
*drive
= &hwif
->drives
[i
];
1304 struct device
*dev
= &drive
->gendev
;
1307 if (!drive
->present
)
1310 ide_add_generic_settings(drive
);
1312 snprintf(dev
->bus_id
, BUS_ID_SIZE
, "%u.%u", hwif
->index
, i
);
1313 dev
->parent
= &hwif
->gendev
;
1314 dev
->bus
= &ide_bus_type
;
1315 dev
->driver_data
= drive
;
1316 dev
->release
= drive_release_dev
;
1318 ret
= device_register(dev
);
1320 printk(KERN_WARNING
"IDE: %s: device_register error: "
1321 "%d\n", __func__
, ret
);
1325 static void ide_port_init_devices(ide_hwif_t
*hwif
)
1327 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
1330 for (i
= 0; i
< MAX_DRIVES
; i
++) {
1331 ide_drive_t
*drive
= &hwif
->drives
[i
];
1333 if (hwif
->host_flags
& IDE_HFLAG_IO_32BIT
)
1334 drive
->io_32bit
= 1;
1335 if (hwif
->host_flags
& IDE_HFLAG_UNMASK_IRQS
)
1337 if (hwif
->host_flags
& IDE_HFLAG_NO_UNMASK_IRQS
)
1338 drive
->no_unmask
= 1;
1339 if ((hwif
->host_flags
& IDE_HFLAG_NO_AUTOTUNE
) == 0)
1340 drive
->autotune
= 1;
1343 if (port_ops
&& port_ops
->port_init_devs
)
1344 port_ops
->port_init_devs(hwif
);
1347 static void ide_init_port(ide_hwif_t
*hwif
, unsigned int port
,
1348 const struct ide_port_info
*d
)
1350 if (d
->chipset
!= ide_etrax100
)
1351 hwif
->channel
= port
;
1354 hwif
->chipset
= d
->chipset
;
1359 if ((d
->host_flags
& IDE_HFLAG_NO_DMA
) == 0)
1360 ide_hwif_setup_dma(hwif
, d
);
1362 if ((!hwif
->irq
&& (d
->host_flags
& IDE_HFLAG_LEGACY_IRQS
)) ||
1363 (d
->host_flags
& IDE_HFLAG_FORCE_LEGACY_IRQS
))
1364 hwif
->irq
= port
? 15 : 14;
1366 hwif
->host_flags
= d
->host_flags
;
1367 hwif
->pio_mask
= d
->pio_mask
;
1369 /* ->set_pio_mode for DTC2278 is currently limited to port 0 */
1370 if (hwif
->chipset
!= ide_dtc2278
|| hwif
->channel
== 0)
1371 hwif
->port_ops
= d
->port_ops
;
1373 if ((d
->host_flags
& IDE_HFLAG_SERIALIZE
) && hwif
->mate
)
1374 hwif
->mate
->serialized
= hwif
->serialized
= 1;
1376 hwif
->swdma_mask
= d
->swdma_mask
;
1377 hwif
->mwdma_mask
= d
->mwdma_mask
;
1378 hwif
->ultra_mask
= d
->udma_mask
;
1380 /* reset DMA masks only for SFF-style DMA controllers */
1381 if ((d
->host_flags
& IDE_HFLAG_NO_DMA
) == 0 && hwif
->dma_base
== 0)
1382 hwif
->swdma_mask
= hwif
->mwdma_mask
= hwif
->ultra_mask
= 0;
1384 if (d
->host_flags
& IDE_HFLAG_RQSIZE_256
)
1387 /* call chipset specific routine for each enabled port */
1392 static void ide_port_cable_detect(ide_hwif_t
*hwif
)
1394 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
1396 if (port_ops
&& port_ops
->cable_detect
&& (hwif
->ultra_mask
& 0x78)) {
1397 if (hwif
->cbl
!= ATA_CBL_PATA40_SHORT
)
1398 hwif
->cbl
= port_ops
->cable_detect(hwif
);
1402 static ssize_t
store_delete_devices(struct device
*portdev
,
1403 struct device_attribute
*attr
,
1404 const char *buf
, size_t n
)
1406 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1408 if (strncmp(buf
, "1", n
))
1411 ide_port_unregister_devices(hwif
);
1416 static DEVICE_ATTR(delete_devices
, S_IWUSR
, NULL
, store_delete_devices
);
1418 static ssize_t
store_scan(struct device
*portdev
,
1419 struct device_attribute
*attr
,
1420 const char *buf
, size_t n
)
1422 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1424 if (strncmp(buf
, "1", n
))
1427 ide_port_unregister_devices(hwif
);
1428 ide_port_scan(hwif
);
1433 static DEVICE_ATTR(scan
, S_IWUSR
, NULL
, store_scan
);
1435 static struct device_attribute
*ide_port_attrs
[] = {
1436 &dev_attr_delete_devices
,
1441 static int ide_sysfs_register_port(ide_hwif_t
*hwif
)
1445 for (i
= 0; ide_port_attrs
[i
]; i
++) {
1446 rc
= device_create_file(hwif
->portdev
, ide_port_attrs
[i
]);
1455 * ide_find_port_slot - find free ide_hwifs[] slot
1458 * Return the new hwif. If we are out of free slots return NULL.
1461 ide_hwif_t
*ide_find_port_slot(const struct ide_port_info
*d
)
1465 u8 bootable
= (d
&& (d
->host_flags
& IDE_HFLAG_NON_BOOTABLE
)) ? 0 : 1;
1468 * Claim an unassigned slot.
1470 * Give preference to claiming other slots before claiming ide0/ide1,
1471 * just in case there's another interface yet-to-be-scanned
1472 * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults).
1474 * Unless there is a bootable card that does not use the standard
1475 * ports 0x1f0/0x170 (the ide0/ide1 defaults).
1478 i
= (d
&& (d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
)) ? 1 : 0;
1480 for (; i
< MAX_HWIFS
; i
++) {
1481 hwif
= &ide_hwifs
[i
];
1482 if (hwif
->chipset
== ide_unknown
)
1486 for (i
= 2; i
< MAX_HWIFS
; i
++) {
1487 hwif
= &ide_hwifs
[i
];
1488 if (hwif
->chipset
== ide_unknown
)
1491 for (i
= 0; i
< 2 && i
< MAX_HWIFS
; i
++) {
1492 hwif
= &ide_hwifs
[i
];
1493 if (hwif
->chipset
== ide_unknown
)
1500 EXPORT_SYMBOL_GPL(ide_find_port_slot
);
1502 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*d
)
1504 ide_hwif_t
*hwif
, *mate
= NULL
;
1507 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1508 if (d
== NULL
|| idx
[i
] == 0xff) {
1513 hwif
= &ide_hwifs
[idx
[i
]];
1515 if (d
->chipset
!= ide_etrax100
&& (i
& 1) && mate
) {
1520 mate
= (i
& 1) ? NULL
: hwif
;
1522 ide_init_port(hwif
, i
& 1, d
);
1523 ide_port_cable_detect(hwif
);
1524 ide_port_init_devices(hwif
);
1527 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1531 hwif
= &ide_hwifs
[idx
[i
]];
1533 if (ide_probe_port(hwif
) == 0)
1536 if (hwif
->chipset
!= ide_4drives
|| !hwif
->mate
||
1537 !hwif
->mate
->present
)
1538 ide_register_port(hwif
);
1541 ide_port_tune_devices(hwif
);
1544 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1548 hwif
= &ide_hwifs
[idx
[i
]];
1550 if (hwif_init(hwif
) == 0) {
1551 printk(KERN_INFO
"%s: failed to initialize IDE "
1552 "interface\n", hwif
->name
);
1559 ide_port_setup_devices(hwif
);
1561 ide_acpi_init(hwif
);
1564 ide_acpi_port_init_devices(hwif
);
1567 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1571 hwif
= &ide_hwifs
[idx
[i
]];
1573 if (hwif
->chipset
== ide_unknown
)
1574 hwif
->chipset
= ide_generic
;
1577 hwif_register_devices(hwif
);
1580 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1584 hwif
= &ide_hwifs
[idx
[i
]];
1586 ide_sysfs_register_port(hwif
);
1587 ide_proc_register_port(hwif
);
1590 ide_proc_port_register_devices(hwif
);
1595 EXPORT_SYMBOL_GPL(ide_device_add_all
);
1597 int ide_device_add(u8 idx
[4], const struct ide_port_info
*d
)
1599 u8 idx_all
[MAX_HWIFS
];
1602 for (i
= 0; i
< MAX_HWIFS
; i
++)
1603 idx_all
[i
] = (i
< 4) ? idx
[i
] : 0xff;
1605 return ide_device_add_all(idx_all
, d
);
1607 EXPORT_SYMBOL_GPL(ide_device_add
);
1609 void ide_port_scan(ide_hwif_t
*hwif
)
1611 ide_port_cable_detect(hwif
);
1612 ide_port_init_devices(hwif
);
1614 if (ide_probe_port(hwif
) < 0)
1619 ide_port_tune_devices(hwif
);
1620 ide_acpi_port_init_devices(hwif
);
1621 ide_port_setup_devices(hwif
);
1622 hwif_register_devices(hwif
);
1623 ide_proc_port_register_devices(hwif
);
1625 EXPORT_SYMBOL_GPL(ide_port_scan
);
1627 static void ide_legacy_init_one(u8
*idx
, hw_regs_t
*hw
, u8 port_no
,
1628 const struct ide_port_info
*d
,
1629 unsigned long config
)
1632 unsigned long base
, ctl
;
1645 if (!request_region(base
, 8, d
->name
)) {
1646 printk(KERN_ERR
"%s: I/O resource 0x%lX-0x%lX not free.\n",
1647 d
->name
, base
, base
+ 7);
1651 if (!request_region(ctl
, 1, d
->name
)) {
1652 printk(KERN_ERR
"%s: I/O resource 0x%lX not free.\n",
1654 release_region(base
, 8);
1658 ide_std_init_ports(hw
, base
, ctl
);
1661 hwif
= ide_find_port_slot(d
);
1663 ide_init_port_hw(hwif
, hw
);
1666 hwif
->config_data
= config
;
1667 idx
[port_no
] = hwif
->index
;
1671 int ide_legacy_device_add(const struct ide_port_info
*d
, unsigned long config
)
1673 u8 idx
[4] = { 0xff, 0xff, 0xff, 0xff };
1676 memset(&hw
, 0, sizeof(hw
));
1678 if ((d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
) == 0)
1679 ide_legacy_init_one(idx
, &hw
[0], 0, d
, config
);
1680 ide_legacy_init_one(idx
, &hw
[1], 1, d
, config
);
1682 if (idx
[0] == 0xff && idx
[1] == 0xff &&
1683 (d
->host_flags
& IDE_HFLAG_SINGLE
))
1686 ide_device_add(idx
, d
);
1690 EXPORT_SYMBOL_GPL(ide_legacy_device_add
);