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
->input_data(drive
, NULL
, id
, SECTOR_SIZE
);
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 struct ide_io_ports
*io_ports
= &hwif
->io_ports
;
268 int use_altstatus
= 0, rc
;
269 unsigned long timeout
;
272 /* take a deep breath */
275 if (io_ports
->ctl_addr
) {
276 a
= ide_read_altstatus(drive
);
277 s
= ide_read_status(drive
);
278 if ((a
^ s
) & ~INDEX_STAT
)
279 /* ancient Seagate drives, broken interfaces */
280 printk(KERN_INFO
"%s: probing with STATUS(0x%02x) "
281 "instead of ALTSTATUS(0x%02x)\n",
284 /* use non-intrusive polling */
288 /* set features register for atapi
289 * identify command to be sure of reply
291 if ((cmd
== WIN_PIDENTIFY
))
292 /* disable dma & overlap */
293 hwif
->OUTB(0, io_ports
->feature_addr
);
295 /* ask drive for ID */
296 hwif
->OUTBSYNC(drive
, cmd
, io_ports
->command_addr
);
298 timeout
= ((cmd
== WIN_IDENTIFY
) ? WAIT_WORSTCASE
: WAIT_PIDENTIFY
) / 2;
301 if (time_after(jiffies
, timeout
)) {
302 /* drive timed-out */
305 /* give drive a breather */
307 s
= use_altstatus
? ide_read_altstatus(drive
)
308 : ide_read_status(drive
);
309 } while (s
& BUSY_STAT
);
311 /* wait for IRQ and DRQ_STAT */
313 s
= ide_read_status(drive
);
315 if (OK_STAT(s
, DRQ_STAT
, BAD_R_STAT
)) {
318 /* local CPU only; some systems need this */
319 local_irq_save(flags
);
320 /* drive returned ID */
321 do_identify(drive
, cmd
);
322 /* drive responded with ID */
324 /* clear drive IRQ */
325 (void)ide_read_status(drive
);
326 local_irq_restore(flags
);
328 /* drive refused ID */
335 * try_to_identify - try to identify a drive
336 * @drive: drive to probe
337 * @cmd: command to use
339 * Issue the identify command and then do IRQ probing to
340 * complete the identification when needed by finding the
341 * IRQ the drive is attached to
344 static int try_to_identify (ide_drive_t
*drive
, u8 cmd
)
346 ide_hwif_t
*hwif
= HWIF(drive
);
349 unsigned long cookie
= 0;
352 * Disable device irq unless we need to
353 * probe for it. Otherwise we'll get spurious
354 * interrupts during the identify-phase that
355 * the irq handler isn't expecting.
357 if (hwif
->io_ports
.ctl_addr
) {
360 cookie
= probe_irq_on();
362 ide_set_irq(drive
, autoprobe
);
365 retval
= actual_try_to_identify(drive
, cmd
);
370 ide_set_irq(drive
, 0);
371 /* clear drive IRQ */
372 (void)ide_read_status(drive
);
374 irq
= probe_irq_off(cookie
);
379 /* Mmmm.. multiple IRQs..
380 * don't know which was ours
382 printk("%s: IRQ probe failed (0x%lx)\n",
383 drive
->name
, cookie
);
390 static int ide_busy_sleep(ide_hwif_t
*hwif
)
392 unsigned long timeout
= jiffies
+ WAIT_WORSTCASE
;
397 stat
= hwif
->INB(hwif
->io_ports
.status_addr
);
398 if ((stat
& BUSY_STAT
) == 0)
400 } while (time_before(jiffies
, timeout
));
406 * do_probe - probe an IDE device
407 * @drive: drive to probe
408 * @cmd: command to use
410 * do_probe() has the difficult job of finding a drive if it exists,
411 * without getting hung up if it doesn't exist, without trampling on
412 * ethernet cards, and without leaving any IRQs dangling to haunt us later.
414 * If a drive is "known" to exist (from CMOS or kernel parameters),
415 * but does not respond right away, the probe will "hang in there"
416 * for the maximum wait time (about 30 seconds), otherwise it will
417 * exit much more quickly.
419 * Returns: 0 device was identified
420 * 1 device timed-out (no response to identify request)
421 * 2 device aborted the command (refused to identify itself)
422 * 3 bad status from device (possible for ATAPI drives)
423 * 4 probe was not attempted because failure was obvious
426 static int do_probe (ide_drive_t
*drive
, u8 cmd
)
428 ide_hwif_t
*hwif
= HWIF(drive
);
429 struct ide_io_ports
*io_ports
= &hwif
->io_ports
;
433 if (drive
->present
) {
434 /* avoid waiting for inappropriate probes */
435 if ((drive
->media
!= ide_disk
) && (cmd
== WIN_IDENTIFY
))
439 printk("probing for %s: present=%d, media=%d, probetype=%s\n",
440 drive
->name
, drive
->present
, drive
->media
,
441 (cmd
== WIN_IDENTIFY
) ? "ATA" : "ATAPI");
444 /* needed for some systems
445 * (e.g. crw9624 as drive0 with disk as slave)
450 if (hwif
->INB(io_ports
->device_addr
) != drive
->select
.all
&&
452 if (drive
->select
.b
.unit
!= 0) {
453 /* exit with drive0 selected */
454 SELECT_DRIVE(&hwif
->drives
[0]);
455 /* allow BUSY_STAT to assert & clear */
458 /* no i/f present: mmm.. this should be a 4 -ml */
462 stat
= ide_read_status(drive
);
464 if (OK_STAT(stat
, READY_STAT
, BUSY_STAT
) ||
465 drive
->present
|| cmd
== WIN_PIDENTIFY
) {
466 /* send cmd and wait */
467 if ((rc
= try_to_identify(drive
, cmd
))) {
468 /* failed: try again */
469 rc
= try_to_identify(drive
,cmd
);
472 stat
= ide_read_status(drive
);
474 if (stat
== (BUSY_STAT
| READY_STAT
))
477 if (rc
== 1 && cmd
== WIN_PIDENTIFY
) {
478 printk(KERN_ERR
"%s: no response (status = 0x%02x), "
479 "resetting drive\n", drive
->name
, stat
);
481 hwif
->OUTB(drive
->select
.all
, io_ports
->device_addr
);
483 hwif
->OUTBSYNC(drive
, WIN_SRST
, io_ports
->command_addr
);
484 (void)ide_busy_sleep(hwif
);
485 rc
= try_to_identify(drive
, cmd
);
488 /* ensure drive IRQ is clear */
489 stat
= ide_read_status(drive
);
492 printk(KERN_ERR
"%s: no response (status = 0x%02x)\n",
495 /* not present or maybe ATAPI */
498 if (drive
->select
.b
.unit
!= 0) {
499 /* exit with drive0 selected */
500 SELECT_DRIVE(&hwif
->drives
[0]);
502 /* ensure drive irq is clear */
503 (void)ide_read_status(drive
);
511 static void enable_nest (ide_drive_t
*drive
)
513 ide_hwif_t
*hwif
= HWIF(drive
);
516 printk("%s: enabling %s -- ", hwif
->name
, drive
->id
->model
);
519 hwif
->OUTBSYNC(drive
, EXABYTE_ENABLE_NEST
, hwif
->io_ports
.command_addr
);
521 if (ide_busy_sleep(hwif
)) {
522 printk(KERN_CONT
"failed (timeout)\n");
528 stat
= ide_read_status(drive
);
530 if (!OK_STAT(stat
, 0, BAD_STAT
))
531 printk(KERN_CONT
"failed (status = 0x%02x)\n", stat
);
533 printk(KERN_CONT
"success\n");
535 /* if !(success||timed-out) */
536 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
537 /* look for ATAPI device */
538 (void) do_probe(drive
, WIN_PIDENTIFY
);
543 * probe_for_drives - upper level drive probe
544 * @drive: drive to probe for
546 * probe_for_drive() tests for existence of a given drive using do_probe()
547 * and presents things to the user as needed.
549 * Returns: 0 no device was found
550 * 1 device was found (note: drive->present might
554 static inline u8
probe_for_drive (ide_drive_t
*drive
)
557 * In order to keep things simple we have an id
558 * block for all drives at all times. If the device
559 * is pre ATA or refuses ATA/ATAPI identify we
560 * will add faked data to this.
562 * Also note that 0 everywhere means "can't do X"
565 drive
->id
= kzalloc(SECTOR_WORDS
*4, GFP_KERNEL
);
567 if(drive
->id
== NULL
)
569 printk(KERN_ERR
"ide: out of memory for id data.\n");
572 strcpy(drive
->id
->model
, "UNKNOWN");
577 /* if !(success||timed-out) */
578 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
579 /* look for ATAPI device */
580 (void) do_probe(drive
, WIN_PIDENTIFY
);
583 /* drive not found */
585 if (strstr(drive
->id
->model
, "E X A B Y T E N E S T"))
588 /* identification failed? */
589 if (!drive
->id_read
) {
590 if (drive
->media
== ide_disk
) {
591 printk(KERN_INFO
"%s: non-IDE drive, CHS=%d/%d/%d\n",
592 drive
->name
, drive
->cyl
,
593 drive
->head
, drive
->sect
);
594 } else if (drive
->media
== ide_cdrom
) {
595 printk(KERN_INFO
"%s: ATAPI cdrom (?)\n", drive
->name
);
598 printk(KERN_WARNING
"%s: Unknown device on bus refused identification. Ignoring.\n", drive
->name
);
602 /* drive was found */
606 /* The drive wasn't being helpful. Add generic info only */
607 if (drive
->id_read
== 0) {
612 if (drive
->media
== ide_disk
) {
613 ide_disk_init_chs(drive
);
614 ide_disk_init_mult_count(drive
);
617 return drive
->present
;
620 static void hwif_release_dev (struct device
*dev
)
622 ide_hwif_t
*hwif
= container_of(dev
, ide_hwif_t
, gendev
);
624 complete(&hwif
->gendev_rel_comp
);
627 static int ide_register_port(ide_hwif_t
*hwif
)
631 /* register with global device tree */
632 strlcpy(hwif
->gendev
.bus_id
,hwif
->name
,BUS_ID_SIZE
);
633 hwif
->gendev
.driver_data
= hwif
;
634 if (hwif
->gendev
.parent
== NULL
) {
636 hwif
->gendev
.parent
= hwif
->dev
;
638 /* Would like to do = &device_legacy */
639 hwif
->gendev
.parent
= NULL
;
641 hwif
->gendev
.release
= hwif_release_dev
;
642 ret
= device_register(&hwif
->gendev
);
644 printk(KERN_WARNING
"IDE: %s: device_register error: %d\n",
649 get_device(&hwif
->gendev
);
651 hwif
->portdev
= device_create_drvdata(ide_port_class
, &hwif
->gendev
,
652 MKDEV(0, 0), hwif
, hwif
->name
);
653 if (IS_ERR(hwif
->portdev
)) {
654 ret
= PTR_ERR(hwif
->portdev
);
655 device_unregister(&hwif
->gendev
);
662 * ide_port_wait_ready - wait for port to become ready
665 * This is needed on some PPCs and a bunch of BIOS-less embedded
666 * platforms. Typical cases are:
668 * - The firmware hard reset the disk before booting the kernel,
669 * the drive is still doing it's poweron-reset sequence, that
670 * can take up to 30 seconds.
672 * - The firmware does nothing (or no firmware), the device is
673 * still in POST state (same as above actually).
675 * - Some CD/DVD/Writer combo drives tend to drive the bus during
676 * their reset sequence even when they are non-selected slave
677 * devices, thus preventing discovery of the main HD.
679 * Doing this wait-for-non-busy should not harm any existing
680 * configuration and fix some issues like the above.
684 * Returns 0 on success, error code (< 0) otherwise.
687 static int ide_port_wait_ready(ide_hwif_t
*hwif
)
691 printk(KERN_DEBUG
"Probing IDE interface %s...\n", hwif
->name
);
693 /* Let HW settle down a bit from whatever init state we
697 /* Wait for BSY bit to go away, spec timeout is 30 seconds,
698 * I know of at least one disk who takes 31 seconds, I use 35
701 rc
= ide_wait_not_busy(hwif
, 35000);
705 /* Now make sure both master & slave are ready */
706 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
707 ide_drive_t
*drive
= &hwif
->drives
[unit
];
709 /* Ignore disks that we will not probe for later. */
710 if (!drive
->noprobe
|| drive
->present
) {
712 ide_set_irq(drive
, 1);
714 rc
= ide_wait_not_busy(hwif
, 35000);
718 printk(KERN_DEBUG
"%s: ide_wait_not_busy() skipped\n",
722 /* Exit function with master reselected (let's be sane) */
724 SELECT_DRIVE(&hwif
->drives
[0]);
730 * ide_undecoded_slave - look for bad CF adapters
733 * Analyse the drives on the interface and attempt to decide if we
734 * have the same drive viewed twice. This occurs with crap CF adapters
735 * and PCMCIA sometimes.
738 void ide_undecoded_slave(ide_drive_t
*drive1
)
740 ide_drive_t
*drive0
= &drive1
->hwif
->drives
[0];
742 if ((drive1
->dn
& 1) == 0 || drive0
->present
== 0)
745 /* If the models don't match they are not the same product */
746 if (strcmp(drive0
->id
->model
, drive1
->id
->model
))
749 /* Serial numbers do not match */
750 if (strncmp(drive0
->id
->serial_no
, drive1
->id
->serial_no
, 20))
753 /* No serial number, thankfully very rare for CF */
754 if (drive0
->id
->serial_no
[0] == 0)
757 /* Appears to be an IDE flash adapter with decode bugs */
758 printk(KERN_WARNING
"ide-probe: ignoring undecoded slave\n");
763 EXPORT_SYMBOL_GPL(ide_undecoded_slave
);
765 static int ide_probe_port(ide_hwif_t
*hwif
)
769 int unit
, rc
= -ENODEV
;
771 BUG_ON(hwif
->present
);
773 if (hwif
->drives
[0].noprobe
&& hwif
->drives
[1].noprobe
)
777 * We must always disable IRQ, as probe_for_drive will assert IRQ, but
778 * we'll install our IRQ driver much later...
782 disable_irq(hwif
->irq
);
784 local_irq_set(flags
);
786 if (ide_port_wait_ready(hwif
) == -EBUSY
)
787 printk(KERN_DEBUG
"%s: Wait for ready failed before probe !\n", hwif
->name
);
790 * Second drive should only exist if first drive was found,
791 * but a lot of cdrom drives are configured as single slaves.
793 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
794 ide_drive_t
*drive
= &hwif
->drives
[unit
];
795 drive
->dn
= (hwif
->channel
? 2 : 0) + unit
;
796 (void) probe_for_drive(drive
);
801 local_irq_restore(flags
);
804 * Use cached IRQ number. It might be (and is...) changed by probe
813 static void ide_port_tune_devices(ide_hwif_t
*hwif
)
815 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
818 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
819 ide_drive_t
*drive
= &hwif
->drives
[unit
];
821 if (drive
->present
&& port_ops
&& port_ops
->quirkproc
)
822 port_ops
->quirkproc(drive
);
825 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
826 ide_drive_t
*drive
= &hwif
->drives
[unit
];
828 if (drive
->present
) {
829 ide_set_max_pio(drive
);
838 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
839 ide_drive_t
*drive
= &hwif
->drives
[unit
];
841 if (hwif
->host_flags
& IDE_HFLAG_NO_IO_32BIT
)
842 drive
->no_io_32bit
= 1;
844 drive
->no_io_32bit
= drive
->id
->dword_io
? 1 : 0;
850 * save_match() is used to simplify logic in init_irq() below.
852 * A loophole here is that we may not know about a particular
853 * hwif's irq until after that hwif is actually probed/initialized..
854 * This could be a problem for the case where an hwif is on a
855 * dual interface that requires serialization (eg. cmd640) and another
856 * hwif using one of the same irqs is initialized beforehand.
858 * This routine detects and reports such situations, but does not fix them.
860 static void save_match(ide_hwif_t
*hwif
, ide_hwif_t
*new, ide_hwif_t
**match
)
862 ide_hwif_t
*m
= *match
;
864 if (m
&& m
->hwgroup
&& m
->hwgroup
!= new->hwgroup
) {
867 printk("%s: potential irq problem with %s and %s\n",
868 hwif
->name
, new->name
, m
->name
);
870 if (!m
|| m
->irq
!= hwif
->irq
) /* don't undo a prior perfect match */
873 #endif /* MAX_HWIFS > 1 */
878 static int ide_init_queue(ide_drive_t
*drive
)
880 struct request_queue
*q
;
881 ide_hwif_t
*hwif
= HWIF(drive
);
882 int max_sectors
= 256;
883 int max_sg_entries
= PRD_ENTRIES
;
886 * Our default set up assumes the normal IDE case,
887 * that is 64K segmenting, standard PRD setup
888 * and LBA28. Some drivers then impose their own
889 * limits and LBA48 we could raise it but as yet
893 q
= blk_init_queue_node(do_ide_request
, &ide_lock
, hwif_to_node(hwif
));
897 q
->queuedata
= drive
;
898 blk_queue_segment_boundary(q
, 0xffff);
900 if (hwif
->rqsize
< max_sectors
)
901 max_sectors
= hwif
->rqsize
;
902 blk_queue_max_sectors(q
, max_sectors
);
905 /* When we have an IOMMU, we may have a problem where pci_map_sg()
906 * creates segments that don't completely match our boundary
907 * requirements and thus need to be broken up again. Because it
908 * doesn't align properly either, we may actually have to break up
909 * to more segments than what was we got in the first place, a max
910 * worst case is twice as many.
911 * This will be fixed once we teach pci_map_sg() about our boundary
912 * requirements, hopefully soon. *FIXME*
914 if (!PCI_DMA_BUS_IS_PHYS
)
915 max_sg_entries
>>= 1;
916 #endif /* CONFIG_PCI */
918 blk_queue_max_hw_segments(q
, max_sg_entries
);
919 blk_queue_max_phys_segments(q
, max_sg_entries
);
921 /* assign drive queue */
924 /* needs drive->queue to be set */
925 ide_toggle_bounce(drive
, 1);
930 static void ide_add_drive_to_hwgroup(ide_drive_t
*drive
)
932 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
934 spin_lock_irq(&ide_lock
);
935 if (!hwgroup
->drive
) {
936 /* first drive for hwgroup. */
938 hwgroup
->drive
= drive
;
939 hwgroup
->hwif
= HWIF(hwgroup
->drive
);
941 drive
->next
= hwgroup
->drive
->next
;
942 hwgroup
->drive
->next
= drive
;
944 spin_unlock_irq(&ide_lock
);
948 * For any present drive:
949 * - allocate the block device queue
950 * - link drive into the hwgroup
952 static void ide_port_setup_devices(ide_hwif_t
*hwif
)
956 mutex_lock(&ide_cfg_mtx
);
957 for (i
= 0; i
< MAX_DRIVES
; i
++) {
958 ide_drive_t
*drive
= &hwif
->drives
[i
];
963 if (ide_init_queue(drive
)) {
964 printk(KERN_ERR
"ide: failed to init %s\n",
969 ide_add_drive_to_hwgroup(drive
);
971 mutex_unlock(&ide_cfg_mtx
);
975 * This routine sets up the irq for an ide interface, and creates a new
976 * hwgroup for the irq/hwif if none was previously assigned.
978 * Much of the code is for correctly detecting/handling irq sharing
979 * and irq serialization situations. This is somewhat complex because
980 * it handles static as well as dynamic (PCMCIA) IDE interfaces.
982 static int init_irq (ide_hwif_t
*hwif
)
984 struct ide_io_ports
*io_ports
= &hwif
->io_ports
;
986 ide_hwgroup_t
*hwgroup
;
987 ide_hwif_t
*match
= NULL
;
990 BUG_ON(in_interrupt());
991 BUG_ON(irqs_disabled());
992 BUG_ON(hwif
== NULL
);
994 mutex_lock(&ide_cfg_mtx
);
995 hwif
->hwgroup
= NULL
;
998 * Group up with any other hwifs that share our irq(s).
1000 for (index
= 0; index
< MAX_HWIFS
; index
++) {
1001 ide_hwif_t
*h
= &ide_hwifs
[index
];
1002 if (h
->hwgroup
) { /* scan only initialized hwif's */
1003 if (hwif
->irq
== h
->irq
) {
1004 hwif
->sharing_irq
= h
->sharing_irq
= 1;
1005 if (hwif
->chipset
!= ide_pci
||
1006 h
->chipset
!= ide_pci
) {
1007 save_match(hwif
, h
, &match
);
1010 if (hwif
->serialized
) {
1011 if (hwif
->mate
&& hwif
->mate
->irq
== h
->irq
)
1012 save_match(hwif
, h
, &match
);
1014 if (h
->serialized
) {
1015 if (h
->mate
&& hwif
->irq
== h
->mate
->irq
)
1016 save_match(hwif
, h
, &match
);
1020 #endif /* MAX_HWIFS > 1 */
1022 * If we are still without a hwgroup, then form a new one
1025 hwgroup
= match
->hwgroup
;
1026 hwif
->hwgroup
= hwgroup
;
1028 * Link us into the hwgroup.
1029 * This must be done early, do ensure that unexpected_intr
1030 * can find the hwif and prevent irq storms.
1031 * No drives are attached to the new hwif, choose_drive
1032 * can't do anything stupid (yet).
1033 * Add ourself as the 2nd entry to the hwgroup->hwif
1034 * linked list, the first entry is the hwif that owns
1035 * hwgroup->handler - do not change that.
1037 spin_lock_irq(&ide_lock
);
1038 hwif
->next
= hwgroup
->hwif
->next
;
1039 hwgroup
->hwif
->next
= hwif
;
1040 BUG_ON(hwif
->next
== hwif
);
1041 spin_unlock_irq(&ide_lock
);
1043 hwgroup
= kmalloc_node(sizeof(*hwgroup
), GFP_KERNEL
|__GFP_ZERO
,
1044 hwif_to_node(hwif
));
1045 if (hwgroup
== NULL
)
1048 hwif
->hwgroup
= hwgroup
;
1049 hwgroup
->hwif
= hwif
->next
= hwif
;
1051 init_timer(&hwgroup
->timer
);
1052 hwgroup
->timer
.function
= &ide_timer_expiry
;
1053 hwgroup
->timer
.data
= (unsigned long) hwgroup
;
1057 * Allocate the irq, if not already obtained for another hwif
1059 if (!match
|| match
->irq
!= hwif
->irq
) {
1061 #if defined(__mc68000__)
1063 #endif /* __mc68000__ */
1065 if (IDE_CHIPSET_IS_PCI(hwif
->chipset
))
1068 if (io_ports
->ctl_addr
)
1070 hwif
->OUTB(0x08, io_ports
->ctl_addr
);
1072 if (request_irq(hwif
->irq
,&ide_intr
,sa
,hwif
->name
,hwgroup
))
1076 if (!hwif
->rqsize
) {
1077 if ((hwif
->host_flags
& IDE_HFLAG_NO_LBA48
) ||
1078 (hwif
->host_flags
& IDE_HFLAG_NO_LBA48_DMA
))
1081 hwif
->rqsize
= 65536;
1084 #if !defined(__mc68000__)
1085 printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif
->name
,
1086 io_ports
->data_addr
, io_ports
->status_addr
,
1087 io_ports
->ctl_addr
, hwif
->irq
);
1089 printk("%s at 0x%08lx on irq %d", hwif
->name
,
1090 io_ports
->data_addr
, hwif
->irq
);
1091 #endif /* __mc68000__ */
1093 printk(" (%sed with %s)",
1094 hwif
->sharing_irq
? "shar" : "serializ", match
->name
);
1097 mutex_unlock(&ide_cfg_mtx
);
1100 ide_remove_port_from_hwgroup(hwif
);
1102 mutex_unlock(&ide_cfg_mtx
);
1106 static int ata_lock(dev_t dev
, void *data
)
1108 /* FIXME: we want to pin hwif down */
1112 static struct kobject
*ata_probe(dev_t dev
, int *part
, void *data
)
1114 ide_hwif_t
*hwif
= data
;
1115 int unit
= *part
>> PARTN_BITS
;
1116 ide_drive_t
*drive
= &hwif
->drives
[unit
];
1117 if (!drive
->present
)
1120 if (drive
->media
== ide_disk
)
1121 request_module("ide-disk");
1123 request_module("ide-scsi");
1124 if (drive
->media
== ide_cdrom
|| drive
->media
== ide_optical
)
1125 request_module("ide-cd");
1126 if (drive
->media
== ide_tape
)
1127 request_module("ide-tape");
1128 if (drive
->media
== ide_floppy
)
1129 request_module("ide-floppy");
1134 static struct kobject
*exact_match(dev_t dev
, int *part
, void *data
)
1136 struct gendisk
*p
= data
;
1137 *part
&= (1 << PARTN_BITS
) - 1;
1138 return &p
->dev
.kobj
;
1141 static int exact_lock(dev_t dev
, void *data
)
1143 struct gendisk
*p
= data
;
1150 void ide_register_region(struct gendisk
*disk
)
1152 blk_register_region(MKDEV(disk
->major
, disk
->first_minor
),
1153 disk
->minors
, NULL
, exact_match
, exact_lock
, disk
);
1156 EXPORT_SYMBOL_GPL(ide_register_region
);
1158 void ide_unregister_region(struct gendisk
*disk
)
1160 blk_unregister_region(MKDEV(disk
->major
, disk
->first_minor
),
1164 EXPORT_SYMBOL_GPL(ide_unregister_region
);
1166 void ide_init_disk(struct gendisk
*disk
, ide_drive_t
*drive
)
1168 ide_hwif_t
*hwif
= drive
->hwif
;
1169 unsigned int unit
= (drive
->select
.all
>> 4) & 1;
1171 disk
->major
= hwif
->major
;
1172 disk
->first_minor
= unit
<< PARTN_BITS
;
1173 sprintf(disk
->disk_name
, "hd%c", 'a' + hwif
->index
* MAX_DRIVES
+ unit
);
1174 disk
->queue
= drive
->queue
;
1177 EXPORT_SYMBOL_GPL(ide_init_disk
);
1179 static void ide_remove_drive_from_hwgroup(ide_drive_t
*drive
)
1181 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
1183 if (drive
== drive
->next
) {
1184 /* special case: last drive from hwgroup. */
1185 BUG_ON(hwgroup
->drive
!= drive
);
1186 hwgroup
->drive
= NULL
;
1190 walk
= hwgroup
->drive
;
1191 while (walk
->next
!= drive
)
1193 walk
->next
= drive
->next
;
1194 if (hwgroup
->drive
== drive
) {
1195 hwgroup
->drive
= drive
->next
;
1196 hwgroup
->hwif
= hwgroup
->drive
->hwif
;
1199 BUG_ON(hwgroup
->drive
== drive
);
1202 static void drive_release_dev (struct device
*dev
)
1204 ide_drive_t
*drive
= container_of(dev
, ide_drive_t
, gendev
);
1206 ide_proc_unregister_device(drive
);
1208 spin_lock_irq(&ide_lock
);
1209 ide_remove_drive_from_hwgroup(drive
);
1213 /* Messed up locking ... */
1214 spin_unlock_irq(&ide_lock
);
1215 blk_cleanup_queue(drive
->queue
);
1216 spin_lock_irq(&ide_lock
);
1217 drive
->queue
= NULL
;
1218 spin_unlock_irq(&ide_lock
);
1220 complete(&drive
->gendev_rel_comp
);
1223 #ifndef ide_default_irq
1224 #define ide_default_irq(irq) 0
1227 static int hwif_init(ide_hwif_t
*hwif
)
1232 hwif
->irq
= ide_default_irq(hwif
->io_ports
.data_addr
);
1234 printk("%s: DISABLED, NO IRQ\n", hwif
->name
);
1239 if (register_blkdev(hwif
->major
, hwif
->name
))
1242 if (!hwif
->sg_max_nents
)
1243 hwif
->sg_max_nents
= PRD_ENTRIES
;
1245 hwif
->sg_table
= kmalloc(sizeof(struct scatterlist
)*hwif
->sg_max_nents
,
1247 if (!hwif
->sg_table
) {
1248 printk(KERN_ERR
"%s: unable to allocate SG table.\n", hwif
->name
);
1252 sg_init_table(hwif
->sg_table
, hwif
->sg_max_nents
);
1254 if (init_irq(hwif
) == 0)
1257 old_irq
= hwif
->irq
;
1259 * It failed to initialise. Find the default IRQ for
1260 * this port and try that.
1262 hwif
->irq
= ide_default_irq(hwif
->io_ports
.data_addr
);
1264 printk("%s: Disabled unable to get IRQ %d.\n",
1265 hwif
->name
, old_irq
);
1268 if (init_irq(hwif
)) {
1269 printk("%s: probed IRQ %d and default IRQ %d failed.\n",
1270 hwif
->name
, old_irq
, hwif
->irq
);
1273 printk("%s: probed IRQ %d failed, using default.\n",
1274 hwif
->name
, hwif
->irq
);
1277 blk_register_region(MKDEV(hwif
->major
, 0), MAX_DRIVES
<< PARTN_BITS
,
1278 THIS_MODULE
, ata_probe
, ata_lock
, hwif
);
1282 unregister_blkdev(hwif
->major
, hwif
->name
);
1286 static void hwif_register_devices(ide_hwif_t
*hwif
)
1290 for (i
= 0; i
< MAX_DRIVES
; i
++) {
1291 ide_drive_t
*drive
= &hwif
->drives
[i
];
1292 struct device
*dev
= &drive
->gendev
;
1295 if (!drive
->present
)
1298 ide_add_generic_settings(drive
);
1300 snprintf(dev
->bus_id
, BUS_ID_SIZE
, "%u.%u", hwif
->index
, i
);
1301 dev
->parent
= &hwif
->gendev
;
1302 dev
->bus
= &ide_bus_type
;
1303 dev
->driver_data
= drive
;
1304 dev
->release
= drive_release_dev
;
1306 ret
= device_register(dev
);
1308 printk(KERN_WARNING
"IDE: %s: device_register error: "
1309 "%d\n", __func__
, ret
);
1313 static void ide_port_init_devices(ide_hwif_t
*hwif
)
1315 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
1318 for (i
= 0; i
< MAX_DRIVES
; i
++) {
1319 ide_drive_t
*drive
= &hwif
->drives
[i
];
1321 if (hwif
->host_flags
& IDE_HFLAG_IO_32BIT
)
1322 drive
->io_32bit
= 1;
1323 if (hwif
->host_flags
& IDE_HFLAG_UNMASK_IRQS
)
1325 if (hwif
->host_flags
& IDE_HFLAG_NO_UNMASK_IRQS
)
1326 drive
->no_unmask
= 1;
1329 if (port_ops
&& port_ops
->port_init_devs
)
1330 port_ops
->port_init_devs(hwif
);
1333 static void ide_init_port(ide_hwif_t
*hwif
, unsigned int port
,
1334 const struct ide_port_info
*d
)
1336 hwif
->channel
= port
;
1339 hwif
->chipset
= d
->chipset
;
1344 if ((!hwif
->irq
&& (d
->host_flags
& IDE_HFLAG_LEGACY_IRQS
)) ||
1345 (d
->host_flags
& IDE_HFLAG_FORCE_LEGACY_IRQS
))
1346 hwif
->irq
= port
? 15 : 14;
1348 /* ->host_flags may be set by ->init_iops (or even earlier...) */
1349 hwif
->host_flags
|= d
->host_flags
;
1350 hwif
->pio_mask
= d
->pio_mask
;
1352 /* ->set_pio_mode for DTC2278 is currently limited to port 0 */
1353 if (hwif
->chipset
!= ide_dtc2278
|| hwif
->channel
== 0)
1354 hwif
->port_ops
= d
->port_ops
;
1356 hwif
->swdma_mask
= d
->swdma_mask
;
1357 hwif
->mwdma_mask
= d
->mwdma_mask
;
1358 hwif
->ultra_mask
= d
->udma_mask
;
1360 if ((d
->host_flags
& IDE_HFLAG_NO_DMA
) == 0) {
1364 rc
= d
->init_dma(hwif
, d
);
1366 rc
= ide_hwif_setup_dma(hwif
, d
);
1369 printk(KERN_INFO
"%s: DMA disabled\n", hwif
->name
);
1370 hwif
->swdma_mask
= 0;
1371 hwif
->mwdma_mask
= 0;
1372 hwif
->ultra_mask
= 0;
1373 } else if (d
->dma_ops
)
1374 hwif
->dma_ops
= d
->dma_ops
;
1377 if ((d
->host_flags
& IDE_HFLAG_SERIALIZE
) ||
1378 ((d
->host_flags
& IDE_HFLAG_SERIALIZE_DMA
) && hwif
->dma_base
)) {
1380 hwif
->mate
->serialized
= hwif
->serialized
= 1;
1383 if (d
->host_flags
& IDE_HFLAG_RQSIZE_256
)
1386 /* call chipset specific routine for each enabled port */
1391 static void ide_port_cable_detect(ide_hwif_t
*hwif
)
1393 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
1395 if (port_ops
&& port_ops
->cable_detect
&& (hwif
->ultra_mask
& 0x78)) {
1396 if (hwif
->cbl
!= ATA_CBL_PATA40_SHORT
)
1397 hwif
->cbl
= port_ops
->cable_detect(hwif
);
1401 static ssize_t
store_delete_devices(struct device
*portdev
,
1402 struct device_attribute
*attr
,
1403 const char *buf
, size_t n
)
1405 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1407 if (strncmp(buf
, "1", n
))
1410 ide_port_unregister_devices(hwif
);
1415 static DEVICE_ATTR(delete_devices
, S_IWUSR
, NULL
, store_delete_devices
);
1417 static ssize_t
store_scan(struct device
*portdev
,
1418 struct device_attribute
*attr
,
1419 const char *buf
, size_t n
)
1421 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1423 if (strncmp(buf
, "1", n
))
1426 ide_port_unregister_devices(hwif
);
1427 ide_port_scan(hwif
);
1432 static DEVICE_ATTR(scan
, S_IWUSR
, NULL
, store_scan
);
1434 static struct device_attribute
*ide_port_attrs
[] = {
1435 &dev_attr_delete_devices
,
1440 static int ide_sysfs_register_port(ide_hwif_t
*hwif
)
1444 for (i
= 0; ide_port_attrs
[i
]; i
++) {
1445 rc
= device_create_file(hwif
->portdev
, ide_port_attrs
[i
]);
1454 * ide_find_port_slot - find free ide_hwifs[] slot
1457 * Return the new hwif. If we are out of free slots return NULL.
1460 ide_hwif_t
*ide_find_port_slot(const struct ide_port_info
*d
)
1464 u8 bootable
= (d
&& (d
->host_flags
& IDE_HFLAG_NON_BOOTABLE
)) ? 0 : 1;
1467 * Claim an unassigned slot.
1469 * Give preference to claiming other slots before claiming ide0/ide1,
1470 * just in case there's another interface yet-to-be-scanned
1471 * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults).
1473 * Unless there is a bootable card that does not use the standard
1474 * ports 0x1f0/0x170 (the ide0/ide1 defaults).
1477 i
= (d
&& (d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
)) ? 1 : 0;
1479 for (; i
< MAX_HWIFS
; i
++) {
1480 hwif
= &ide_hwifs
[i
];
1481 if (hwif
->chipset
== ide_unknown
)
1485 for (i
= 2; i
< MAX_HWIFS
; i
++) {
1486 hwif
= &ide_hwifs
[i
];
1487 if (hwif
->chipset
== ide_unknown
)
1490 for (i
= 0; i
< 2 && i
< MAX_HWIFS
; i
++) {
1491 hwif
= &ide_hwifs
[i
];
1492 if (hwif
->chipset
== ide_unknown
)
1499 EXPORT_SYMBOL_GPL(ide_find_port_slot
);
1501 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*d
)
1503 ide_hwif_t
*hwif
, *mate
= NULL
;
1506 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1507 if (idx
[i
] == 0xff) {
1512 hwif
= &ide_hwifs
[idx
[i
]];
1514 ide_port_apply_params(hwif
);
1521 if ((i
& 1) && mate
) {
1526 mate
= (i
& 1) ? NULL
: hwif
;
1528 ide_init_port(hwif
, i
& 1, d
);
1529 ide_port_cable_detect(hwif
);
1530 ide_port_init_devices(hwif
);
1533 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1537 hwif
= &ide_hwifs
[idx
[i
]];
1539 if (ide_probe_port(hwif
) == 0)
1542 if (hwif
->chipset
!= ide_4drives
|| !hwif
->mate
||
1543 !hwif
->mate
->present
)
1544 ide_register_port(hwif
);
1547 ide_port_tune_devices(hwif
);
1550 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1554 hwif
= &ide_hwifs
[idx
[i
]];
1556 if (hwif_init(hwif
) == 0) {
1557 printk(KERN_INFO
"%s: failed to initialize IDE "
1558 "interface\n", hwif
->name
);
1565 ide_port_setup_devices(hwif
);
1567 ide_acpi_init(hwif
);
1570 ide_acpi_port_init_devices(hwif
);
1573 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1577 hwif
= &ide_hwifs
[idx
[i
]];
1579 if (hwif
->chipset
== ide_unknown
)
1580 hwif
->chipset
= ide_generic
;
1583 hwif_register_devices(hwif
);
1586 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1590 hwif
= &ide_hwifs
[idx
[i
]];
1592 ide_sysfs_register_port(hwif
);
1593 ide_proc_register_port(hwif
);
1596 ide_proc_port_register_devices(hwif
);
1601 EXPORT_SYMBOL_GPL(ide_device_add_all
);
1603 int ide_device_add(u8 idx
[4], const struct ide_port_info
*d
)
1605 u8 idx_all
[MAX_HWIFS
];
1608 for (i
= 0; i
< MAX_HWIFS
; i
++)
1609 idx_all
[i
] = (i
< 4) ? idx
[i
] : 0xff;
1611 return ide_device_add_all(idx_all
, d
);
1613 EXPORT_SYMBOL_GPL(ide_device_add
);
1615 void ide_port_scan(ide_hwif_t
*hwif
)
1617 ide_port_apply_params(hwif
);
1618 ide_port_cable_detect(hwif
);
1619 ide_port_init_devices(hwif
);
1621 if (ide_probe_port(hwif
) < 0)
1626 ide_port_tune_devices(hwif
);
1627 ide_acpi_port_init_devices(hwif
);
1628 ide_port_setup_devices(hwif
);
1629 hwif_register_devices(hwif
);
1630 ide_proc_port_register_devices(hwif
);
1632 EXPORT_SYMBOL_GPL(ide_port_scan
);
1634 static void ide_legacy_init_one(u8
*idx
, hw_regs_t
*hw
, u8 port_no
,
1635 const struct ide_port_info
*d
,
1636 unsigned long config
)
1639 unsigned long base
, ctl
;
1652 if (!request_region(base
, 8, d
->name
)) {
1653 printk(KERN_ERR
"%s: I/O resource 0x%lX-0x%lX not free.\n",
1654 d
->name
, base
, base
+ 7);
1658 if (!request_region(ctl
, 1, d
->name
)) {
1659 printk(KERN_ERR
"%s: I/O resource 0x%lX not free.\n",
1661 release_region(base
, 8);
1665 ide_std_init_ports(hw
, base
, ctl
);
1668 hwif
= ide_find_port_slot(d
);
1670 ide_init_port_hw(hwif
, hw
);
1672 hwif
->config_data
= config
;
1673 idx
[port_no
] = hwif
->index
;
1677 int ide_legacy_device_add(const struct ide_port_info
*d
, unsigned long config
)
1679 u8 idx
[4] = { 0xff, 0xff, 0xff, 0xff };
1682 memset(&hw
, 0, sizeof(hw
));
1684 if ((d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
) == 0)
1685 ide_legacy_init_one(idx
, &hw
[0], 0, d
, config
);
1686 ide_legacy_init_one(idx
, &hw
[1], 1, d
, config
);
1688 if (idx
[0] == 0xff && idx
[1] == 0xff &&
1689 (d
->host_flags
& IDE_HFLAG_SINGLE
))
1692 ide_device_add(idx
, d
);
1696 EXPORT_SYMBOL_GPL(ide_legacy_device_add
);