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>
42 static ide_hwif_t ide_hwifs
[MAX_HWIFS
]; /* master data repository */
45 * generic_id - add a generic drive id
46 * @drive: drive to make an ID block for
48 * Add a fake id field to the drive we are passed. This allows
49 * use to skip a ton of NULL checks (which people always miss)
50 * and make drive properties unconditional outside of this file
53 static void generic_id(ide_drive_t
*drive
)
55 drive
->id
->cyls
= drive
->cyl
;
56 drive
->id
->heads
= drive
->head
;
57 drive
->id
->sectors
= drive
->sect
;
58 drive
->id
->cur_cyls
= drive
->cyl
;
59 drive
->id
->cur_heads
= drive
->head
;
60 drive
->id
->cur_sectors
= drive
->sect
;
63 static void ide_disk_init_chs(ide_drive_t
*drive
)
65 struct hd_driveid
*id
= drive
->id
;
67 /* Extract geometry if we did not already have one for the drive */
68 if (!drive
->cyl
|| !drive
->head
|| !drive
->sect
) {
69 drive
->cyl
= drive
->bios_cyl
= id
->cyls
;
70 drive
->head
= drive
->bios_head
= id
->heads
;
71 drive
->sect
= drive
->bios_sect
= id
->sectors
;
74 /* Handle logical geometry translation by the drive */
75 if ((id
->field_valid
& 1) && id
->cur_cyls
&&
76 id
->cur_heads
&& (id
->cur_heads
<= 16) && id
->cur_sectors
) {
77 drive
->cyl
= id
->cur_cyls
;
78 drive
->head
= id
->cur_heads
;
79 drive
->sect
= id
->cur_sectors
;
82 /* Use physical geometry if what we have still makes no sense */
83 if (drive
->head
> 16 && id
->heads
&& id
->heads
<= 16) {
84 drive
->cyl
= id
->cyls
;
85 drive
->head
= id
->heads
;
86 drive
->sect
= id
->sectors
;
90 static void ide_disk_init_mult_count(ide_drive_t
*drive
)
92 struct hd_driveid
*id
= drive
->id
;
94 drive
->mult_count
= 0;
95 if (id
->max_multsect
) {
96 #ifdef CONFIG_IDEDISK_MULTI_MODE
97 id
->multsect
= ((id
->max_multsect
/2) > 1) ? id
->max_multsect
: 0;
98 id
->multsect_valid
= id
->multsect
? 1 : 0;
99 drive
->mult_req
= id
->multsect_valid
? id
->max_multsect
: 0;
100 drive
->special
.b
.set_multmode
= drive
->mult_req
? 1 : 0;
101 #else /* original, pre IDE-NFG, per request of AC */
103 if (drive
->mult_req
> id
->max_multsect
)
104 drive
->mult_req
= id
->max_multsect
;
105 if (drive
->mult_req
|| ((id
->multsect_valid
& 1) && id
->multsect
))
106 drive
->special
.b
.set_multmode
= 1;
112 * do_identify - identify a drive
113 * @drive: drive to identify
116 * Called when we have issued a drive identify command to
117 * read and parse the results. This function is run with
118 * interrupts disabled.
121 static inline void do_identify (ide_drive_t
*drive
, u8 cmd
)
123 ide_hwif_t
*hwif
= HWIF(drive
);
125 struct hd_driveid
*id
;
128 /* read 512 bytes of id info */
129 hwif
->input_data(drive
, NULL
, id
, SECTOR_SIZE
);
134 printk(KERN_INFO
"%s: dumping identify data\n", drive
->name
);
135 ide_dump_identify((u8
*)id
);
139 #if defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
141 * EATA SCSI controllers do a hardware ATA emulation:
142 * Ignore them if there is a driver for them available.
144 if ((id
->model
[0] == 'P' && id
->model
[1] == 'M') ||
145 (id
->model
[0] == 'S' && id
->model
[1] == 'K')) {
146 printk("%s: EATA SCSI HBA %.10s\n", drive
->name
, id
->model
);
149 #endif /* CONFIG_SCSI_EATA || CONFIG_SCSI_EATA_PIO */
152 * WIN_IDENTIFY returns little-endian info,
153 * WIN_PIDENTIFY *usually* returns little-endian info.
155 if (cmd
== WIN_PIDENTIFY
) {
156 if ((id
->model
[0] == 'N' && id
->model
[1] == 'E') /* NEC */
157 || (id
->model
[0] == 'F' && id
->model
[1] == 'X') /* Mitsumi */
158 || (id
->model
[0] == 'P' && id
->model
[1] == 'i'))/* Pioneer */
159 /* Vertos drives may still be weird */
162 ide_fixstring(id
->model
, sizeof(id
->model
), bswap
);
163 ide_fixstring(id
->fw_rev
, sizeof(id
->fw_rev
), bswap
);
164 ide_fixstring(id
->serial_no
, sizeof(id
->serial_no
), bswap
);
166 /* we depend on this a lot! */
167 id
->model
[sizeof(id
->model
)-1] = '\0';
169 if (strstr(id
->model
, "E X A B Y T E N E S T"))
172 printk("%s: %s, ", drive
->name
, id
->model
);
177 * Check for an ATAPI device
179 if (cmd
== WIN_PIDENTIFY
) {
180 u8 type
= (id
->config
>> 8) & 0x1f;
184 if (!strstr(id
->model
, "CD-ROM")) {
185 if (!strstr(id
->model
, "oppy") &&
186 !strstr(id
->model
, "poyp") &&
187 !strstr(id
->model
, "ZIP"))
188 printk("cdrom or floppy?, assuming ");
189 if (drive
->media
!= ide_cdrom
) {
191 drive
->removable
= 1;
195 /* Early cdrom models used zero */
198 drive
->removable
= 1;
200 /* kludge for Apple PowerBook internal zip */
201 if (!strstr(id
->model
, "CD-ROM") &&
202 strstr(id
->model
, "ZIP")) {
208 printk ("CD/DVD-ROM");
215 drive
->removable
= 1;
218 printk("UNKNOWN (type %d)", type
);
223 /* an ATAPI device ignores DRDY */
224 drive
->ready_stat
= 0;
229 * Not an ATAPI device: looks like a "regular" hard disk
233 * 0x848a = CompactFlash device
234 * These are *not* removable in Linux definition of the term
237 if ((id
->config
!= 0x848a) && (id
->config
& (1<<7)))
238 drive
->removable
= 1;
240 drive
->media
= ide_disk
;
241 printk("%s DISK drive\n", (id
->config
== 0x848a) ? "CFA" : "ATA" );
252 * actual_try_to_identify - send ata/atapi identify
253 * @drive: drive to identify
254 * @cmd: command to use
256 * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
257 * and waits for a response. It also monitors irqs while this is
258 * happening, in hope of automatically determining which one is
259 * being used by the interface.
261 * Returns: 0 device was identified
262 * 1 device timed-out (no response to identify request)
263 * 2 device aborted the command (refused to identify itself)
266 static int actual_try_to_identify (ide_drive_t
*drive
, u8 cmd
)
268 ide_hwif_t
*hwif
= HWIF(drive
);
269 struct ide_io_ports
*io_ports
= &hwif
->io_ports
;
270 int use_altstatus
= 0, rc
;
271 unsigned long timeout
;
274 /* take a deep breath */
277 if (io_ports
->ctl_addr
) {
278 a
= hwif
->read_altstatus(hwif
);
279 s
= hwif
->read_status(hwif
);
280 if ((a
^ s
) & ~INDEX_STAT
)
281 /* ancient Seagate drives, broken interfaces */
282 printk(KERN_INFO
"%s: probing with STATUS(0x%02x) "
283 "instead of ALTSTATUS(0x%02x)\n",
286 /* use non-intrusive polling */
290 /* set features register for atapi
291 * identify command to be sure of reply
293 if (cmd
== WIN_PIDENTIFY
) {
296 memset(&task
, 0, sizeof(task
));
297 /* disable DMA & overlap */
298 task
.tf_flags
= IDE_TFLAG_OUT_FEATURE
;
300 drive
->hwif
->tf_load(drive
, &task
);
303 /* ask drive for ID */
304 hwif
->exec_command(hwif
, cmd
);
306 timeout
= ((cmd
== WIN_IDENTIFY
) ? WAIT_WORSTCASE
: WAIT_PIDENTIFY
) / 2;
309 if (time_after(jiffies
, timeout
)) {
310 /* drive timed-out */
313 /* give drive a breather */
315 s
= use_altstatus
? hwif
->read_altstatus(hwif
)
316 : hwif
->read_status(hwif
);
317 } while (s
& BUSY_STAT
);
319 /* wait for IRQ and DRQ_STAT */
321 s
= hwif
->read_status(hwif
);
323 if (OK_STAT(s
, DRQ_STAT
, BAD_R_STAT
)) {
326 /* local CPU only; some systems need this */
327 local_irq_save(flags
);
328 /* drive returned ID */
329 do_identify(drive
, cmd
);
330 /* drive responded with ID */
332 /* clear drive IRQ */
333 (void)hwif
->read_status(hwif
);
334 local_irq_restore(flags
);
336 /* drive refused ID */
343 * try_to_identify - try to identify a drive
344 * @drive: drive to probe
345 * @cmd: command to use
347 * Issue the identify command and then do IRQ probing to
348 * complete the identification when needed by finding the
349 * IRQ the drive is attached to
352 static int try_to_identify (ide_drive_t
*drive
, u8 cmd
)
354 ide_hwif_t
*hwif
= HWIF(drive
);
357 unsigned long cookie
= 0;
360 * Disable device irq unless we need to
361 * probe for it. Otherwise we'll get spurious
362 * interrupts during the identify-phase that
363 * the irq handler isn't expecting.
365 if (hwif
->io_ports
.ctl_addr
) {
368 cookie
= probe_irq_on();
370 hwif
->set_irq(hwif
, autoprobe
);
373 retval
= actual_try_to_identify(drive
, cmd
);
378 hwif
->set_irq(hwif
, 0);
379 /* clear drive IRQ */
380 (void)hwif
->read_status(hwif
);
382 irq
= probe_irq_off(cookie
);
387 /* Mmmm.. multiple IRQs..
388 * don't know which was ours
390 printk("%s: IRQ probe failed (0x%lx)\n",
391 drive
->name
, cookie
);
398 static int ide_busy_sleep(ide_hwif_t
*hwif
)
400 unsigned long timeout
= jiffies
+ WAIT_WORSTCASE
;
405 stat
= hwif
->read_status(hwif
);
406 if ((stat
& BUSY_STAT
) == 0)
408 } while (time_before(jiffies
, timeout
));
413 static u8
ide_read_device(ide_drive_t
*drive
)
417 memset(&task
, 0, sizeof(task
));
418 task
.tf_flags
= IDE_TFLAG_IN_DEVICE
;
420 drive
->hwif
->tf_read(drive
, &task
);
422 return task
.tf
.device
;
426 * do_probe - probe an IDE device
427 * @drive: drive to probe
428 * @cmd: command to use
430 * do_probe() has the difficult job of finding a drive if it exists,
431 * without getting hung up if it doesn't exist, without trampling on
432 * ethernet cards, and without leaving any IRQs dangling to haunt us later.
434 * If a drive is "known" to exist (from CMOS or kernel parameters),
435 * but does not respond right away, the probe will "hang in there"
436 * for the maximum wait time (about 30 seconds), otherwise it will
437 * exit much more quickly.
439 * Returns: 0 device was identified
440 * 1 device timed-out (no response to identify request)
441 * 2 device aborted the command (refused to identify itself)
442 * 3 bad status from device (possible for ATAPI drives)
443 * 4 probe was not attempted because failure was obvious
446 static int do_probe (ide_drive_t
*drive
, u8 cmd
)
448 ide_hwif_t
*hwif
= HWIF(drive
);
452 if (drive
->present
) {
453 /* avoid waiting for inappropriate probes */
454 if ((drive
->media
!= ide_disk
) && (cmd
== WIN_IDENTIFY
))
458 printk("probing for %s: present=%d, media=%d, probetype=%s\n",
459 drive
->name
, drive
->present
, drive
->media
,
460 (cmd
== WIN_IDENTIFY
) ? "ATA" : "ATAPI");
463 /* needed for some systems
464 * (e.g. crw9624 as drive0 with disk as slave)
470 if (ide_read_device(drive
) != drive
->select
.all
&& !drive
->present
) {
471 if (drive
->select
.b
.unit
!= 0) {
472 /* exit with drive0 selected */
473 SELECT_DRIVE(&hwif
->drives
[0]);
474 /* allow BUSY_STAT to assert & clear */
477 /* no i/f present: mmm.. this should be a 4 -ml */
481 stat
= hwif
->read_status(hwif
);
483 if (OK_STAT(stat
, READY_STAT
, BUSY_STAT
) ||
484 drive
->present
|| cmd
== WIN_PIDENTIFY
) {
485 /* send cmd and wait */
486 if ((rc
= try_to_identify(drive
, cmd
))) {
487 /* failed: try again */
488 rc
= try_to_identify(drive
,cmd
);
491 stat
= hwif
->read_status(hwif
);
493 if (stat
== (BUSY_STAT
| READY_STAT
))
496 if (rc
== 1 && cmd
== WIN_PIDENTIFY
) {
497 printk(KERN_ERR
"%s: no response (status = 0x%02x), "
498 "resetting drive\n", drive
->name
, stat
);
502 hwif
->exec_command(hwif
, WIN_SRST
);
503 (void)ide_busy_sleep(hwif
);
504 rc
= try_to_identify(drive
, cmd
);
507 /* ensure drive IRQ is clear */
508 stat
= hwif
->read_status(hwif
);
511 printk(KERN_ERR
"%s: no response (status = 0x%02x)\n",
514 /* not present or maybe ATAPI */
517 if (drive
->select
.b
.unit
!= 0) {
518 /* exit with drive0 selected */
519 SELECT_DRIVE(&hwif
->drives
[0]);
521 /* ensure drive irq is clear */
522 (void)hwif
->read_status(hwif
);
530 static void enable_nest (ide_drive_t
*drive
)
532 ide_hwif_t
*hwif
= HWIF(drive
);
535 printk("%s: enabling %s -- ", hwif
->name
, drive
->id
->model
);
538 hwif
->exec_command(hwif
, EXABYTE_ENABLE_NEST
);
540 if (ide_busy_sleep(hwif
)) {
541 printk(KERN_CONT
"failed (timeout)\n");
547 stat
= hwif
->read_status(hwif
);
549 if (!OK_STAT(stat
, 0, BAD_STAT
))
550 printk(KERN_CONT
"failed (status = 0x%02x)\n", stat
);
552 printk(KERN_CONT
"success\n");
554 /* if !(success||timed-out) */
555 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
556 /* look for ATAPI device */
557 (void) do_probe(drive
, WIN_PIDENTIFY
);
562 * probe_for_drives - upper level drive probe
563 * @drive: drive to probe for
565 * probe_for_drive() tests for existence of a given drive using do_probe()
566 * and presents things to the user as needed.
568 * Returns: 0 no device was found
569 * 1 device was found (note: drive->present might
573 static inline u8
probe_for_drive (ide_drive_t
*drive
)
576 * In order to keep things simple we have an id
577 * block for all drives at all times. If the device
578 * is pre ATA or refuses ATA/ATAPI identify we
579 * will add faked data to this.
581 * Also note that 0 everywhere means "can't do X"
584 drive
->id
= kzalloc(SECTOR_WORDS
*4, GFP_KERNEL
);
586 if(drive
->id
== NULL
)
588 printk(KERN_ERR
"ide: out of memory for id data.\n");
591 strcpy(drive
->id
->model
, "UNKNOWN");
596 /* if !(success||timed-out) */
597 if (do_probe(drive
, WIN_IDENTIFY
) >= 2) {
598 /* look for ATAPI device */
599 (void) do_probe(drive
, WIN_PIDENTIFY
);
602 /* drive not found */
604 if (strstr(drive
->id
->model
, "E X A B Y T E N E S T"))
607 /* identification failed? */
608 if (!drive
->id_read
) {
609 if (drive
->media
== ide_disk
) {
610 printk(KERN_INFO
"%s: non-IDE drive, CHS=%d/%d/%d\n",
611 drive
->name
, drive
->cyl
,
612 drive
->head
, drive
->sect
);
613 } else if (drive
->media
== ide_cdrom
) {
614 printk(KERN_INFO
"%s: ATAPI cdrom (?)\n", drive
->name
);
617 printk(KERN_WARNING
"%s: Unknown device on bus refused identification. Ignoring.\n", drive
->name
);
621 /* drive was found */
625 /* The drive wasn't being helpful. Add generic info only */
626 if (drive
->id_read
== 0) {
631 if (drive
->media
== ide_disk
) {
632 ide_disk_init_chs(drive
);
633 ide_disk_init_mult_count(drive
);
636 return drive
->present
;
639 static void hwif_release_dev (struct device
*dev
)
641 ide_hwif_t
*hwif
= container_of(dev
, ide_hwif_t
, gendev
);
643 complete(&hwif
->gendev_rel_comp
);
646 static int ide_register_port(ide_hwif_t
*hwif
)
650 /* register with global device tree */
651 strlcpy(hwif
->gendev
.bus_id
,hwif
->name
,BUS_ID_SIZE
);
652 hwif
->gendev
.driver_data
= hwif
;
653 if (hwif
->gendev
.parent
== NULL
) {
655 hwif
->gendev
.parent
= hwif
->dev
;
657 /* Would like to do = &device_legacy */
658 hwif
->gendev
.parent
= NULL
;
660 hwif
->gendev
.release
= hwif_release_dev
;
661 ret
= device_register(&hwif
->gendev
);
663 printk(KERN_WARNING
"IDE: %s: device_register error: %d\n",
668 hwif
->portdev
= device_create_drvdata(ide_port_class
, &hwif
->gendev
,
669 MKDEV(0, 0), hwif
, hwif
->name
);
670 if (IS_ERR(hwif
->portdev
)) {
671 ret
= PTR_ERR(hwif
->portdev
);
672 device_unregister(&hwif
->gendev
);
679 * ide_port_wait_ready - wait for port to become ready
682 * This is needed on some PPCs and a bunch of BIOS-less embedded
683 * platforms. Typical cases are:
685 * - The firmware hard reset the disk before booting the kernel,
686 * the drive is still doing it's poweron-reset sequence, that
687 * can take up to 30 seconds.
689 * - The firmware does nothing (or no firmware), the device is
690 * still in POST state (same as above actually).
692 * - Some CD/DVD/Writer combo drives tend to drive the bus during
693 * their reset sequence even when they are non-selected slave
694 * devices, thus preventing discovery of the main HD.
696 * Doing this wait-for-non-busy should not harm any existing
697 * configuration and fix some issues like the above.
701 * Returns 0 on success, error code (< 0) otherwise.
704 static int ide_port_wait_ready(ide_hwif_t
*hwif
)
708 printk(KERN_DEBUG
"Probing IDE interface %s...\n", hwif
->name
);
710 /* Let HW settle down a bit from whatever init state we
714 /* Wait for BSY bit to go away, spec timeout is 30 seconds,
715 * I know of at least one disk who takes 31 seconds, I use 35
718 rc
= ide_wait_not_busy(hwif
, 35000);
722 /* Now make sure both master & slave are ready */
723 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
724 ide_drive_t
*drive
= &hwif
->drives
[unit
];
726 /* Ignore disks that we will not probe for later. */
727 if (!drive
->noprobe
|| drive
->present
) {
729 hwif
->set_irq(hwif
, 1);
731 rc
= ide_wait_not_busy(hwif
, 35000);
735 printk(KERN_DEBUG
"%s: ide_wait_not_busy() skipped\n",
739 /* Exit function with master reselected (let's be sane) */
741 SELECT_DRIVE(&hwif
->drives
[0]);
747 * ide_undecoded_slave - look for bad CF adapters
750 * Analyse the drives on the interface and attempt to decide if we
751 * have the same drive viewed twice. This occurs with crap CF adapters
752 * and PCMCIA sometimes.
755 void ide_undecoded_slave(ide_drive_t
*drive1
)
757 ide_drive_t
*drive0
= &drive1
->hwif
->drives
[0];
759 if ((drive1
->dn
& 1) == 0 || drive0
->present
== 0)
762 /* If the models don't match they are not the same product */
763 if (strcmp(drive0
->id
->model
, drive1
->id
->model
))
766 /* Serial numbers do not match */
767 if (strncmp(drive0
->id
->serial_no
, drive1
->id
->serial_no
, 20))
770 /* No serial number, thankfully very rare for CF */
771 if (drive0
->id
->serial_no
[0] == 0)
774 /* Appears to be an IDE flash adapter with decode bugs */
775 printk(KERN_WARNING
"ide-probe: ignoring undecoded slave\n");
780 EXPORT_SYMBOL_GPL(ide_undecoded_slave
);
782 static int ide_probe_port(ide_hwif_t
*hwif
)
786 int unit
, rc
= -ENODEV
;
788 BUG_ON(hwif
->present
);
790 if (hwif
->drives
[0].noprobe
&& hwif
->drives
[1].noprobe
)
794 * We must always disable IRQ, as probe_for_drive will assert IRQ, but
795 * we'll install our IRQ driver much later...
799 disable_irq(hwif
->irq
);
801 local_irq_set(flags
);
803 if (ide_port_wait_ready(hwif
) == -EBUSY
)
804 printk(KERN_DEBUG
"%s: Wait for ready failed before probe !\n", hwif
->name
);
807 * Second drive should only exist if first drive was found,
808 * but a lot of cdrom drives are configured as single slaves.
810 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
811 ide_drive_t
*drive
= &hwif
->drives
[unit
];
812 drive
->dn
= (hwif
->channel
? 2 : 0) + unit
;
813 (void) probe_for_drive(drive
);
818 local_irq_restore(flags
);
821 * Use cached IRQ number. It might be (and is...) changed by probe
830 static void ide_port_tune_devices(ide_hwif_t
*hwif
)
832 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
835 for (unit
= 0; unit
< MAX_DRIVES
; unit
++) {
836 ide_drive_t
*drive
= &hwif
->drives
[unit
];
838 if (drive
->present
&& port_ops
&& port_ops
->quirkproc
)
839 port_ops
->quirkproc(drive
);
842 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
843 ide_drive_t
*drive
= &hwif
->drives
[unit
];
845 if (drive
->present
) {
846 ide_set_max_pio(drive
);
855 for (unit
= 0; unit
< MAX_DRIVES
; ++unit
) {
856 ide_drive_t
*drive
= &hwif
->drives
[unit
];
858 if (hwif
->host_flags
& IDE_HFLAG_NO_IO_32BIT
)
859 drive
->no_io_32bit
= 1;
861 drive
->no_io_32bit
= drive
->id
->dword_io
? 1 : 0;
867 * save_match() is used to simplify logic in init_irq() below.
869 * A loophole here is that we may not know about a particular
870 * hwif's irq until after that hwif is actually probed/initialized..
871 * This could be a problem for the case where an hwif is on a
872 * dual interface that requires serialization (eg. cmd640) and another
873 * hwif using one of the same irqs is initialized beforehand.
875 * This routine detects and reports such situations, but does not fix them.
877 static void save_match(ide_hwif_t
*hwif
, ide_hwif_t
*new, ide_hwif_t
**match
)
879 ide_hwif_t
*m
= *match
;
881 if (m
&& m
->hwgroup
&& m
->hwgroup
!= new->hwgroup
) {
884 printk("%s: potential irq problem with %s and %s\n",
885 hwif
->name
, new->name
, m
->name
);
887 if (!m
|| m
->irq
!= hwif
->irq
) /* don't undo a prior perfect match */
890 #endif /* MAX_HWIFS > 1 */
895 static int ide_init_queue(ide_drive_t
*drive
)
897 struct request_queue
*q
;
898 ide_hwif_t
*hwif
= HWIF(drive
);
899 int max_sectors
= 256;
900 int max_sg_entries
= PRD_ENTRIES
;
903 * Our default set up assumes the normal IDE case,
904 * that is 64K segmenting, standard PRD setup
905 * and LBA28. Some drivers then impose their own
906 * limits and LBA48 we could raise it but as yet
910 q
= blk_init_queue_node(do_ide_request
, &ide_lock
, hwif_to_node(hwif
));
914 q
->queuedata
= drive
;
915 blk_queue_segment_boundary(q
, 0xffff);
917 if (hwif
->rqsize
< max_sectors
)
918 max_sectors
= hwif
->rqsize
;
919 blk_queue_max_sectors(q
, max_sectors
);
922 /* When we have an IOMMU, we may have a problem where pci_map_sg()
923 * creates segments that don't completely match our boundary
924 * requirements and thus need to be broken up again. Because it
925 * doesn't align properly either, we may actually have to break up
926 * to more segments than what was we got in the first place, a max
927 * worst case is twice as many.
928 * This will be fixed once we teach pci_map_sg() about our boundary
929 * requirements, hopefully soon. *FIXME*
931 if (!PCI_DMA_BUS_IS_PHYS
)
932 max_sg_entries
>>= 1;
933 #endif /* CONFIG_PCI */
935 blk_queue_max_hw_segments(q
, max_sg_entries
);
936 blk_queue_max_phys_segments(q
, max_sg_entries
);
938 /* assign drive queue */
941 /* needs drive->queue to be set */
942 ide_toggle_bounce(drive
, 1);
947 static void ide_add_drive_to_hwgroup(ide_drive_t
*drive
)
949 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
951 spin_lock_irq(&ide_lock
);
952 if (!hwgroup
->drive
) {
953 /* first drive for hwgroup. */
955 hwgroup
->drive
= drive
;
956 hwgroup
->hwif
= HWIF(hwgroup
->drive
);
958 drive
->next
= hwgroup
->drive
->next
;
959 hwgroup
->drive
->next
= drive
;
961 spin_unlock_irq(&ide_lock
);
965 * For any present drive:
966 * - allocate the block device queue
967 * - link drive into the hwgroup
969 static void ide_port_setup_devices(ide_hwif_t
*hwif
)
973 mutex_lock(&ide_cfg_mtx
);
974 for (i
= 0; i
< MAX_DRIVES
; i
++) {
975 ide_drive_t
*drive
= &hwif
->drives
[i
];
980 if (ide_init_queue(drive
)) {
981 printk(KERN_ERR
"ide: failed to init %s\n",
986 ide_add_drive_to_hwgroup(drive
);
988 mutex_unlock(&ide_cfg_mtx
);
992 * This routine sets up the irq for an ide interface, and creates a new
993 * hwgroup for the irq/hwif if none was previously assigned.
995 * Much of the code is for correctly detecting/handling irq sharing
996 * and irq serialization situations. This is somewhat complex because
997 * it handles static as well as dynamic (PCMCIA) IDE interfaces.
999 static int init_irq (ide_hwif_t
*hwif
)
1001 struct ide_io_ports
*io_ports
= &hwif
->io_ports
;
1003 ide_hwgroup_t
*hwgroup
;
1004 ide_hwif_t
*match
= NULL
;
1007 BUG_ON(in_interrupt());
1008 BUG_ON(irqs_disabled());
1009 BUG_ON(hwif
== NULL
);
1011 mutex_lock(&ide_cfg_mtx
);
1012 hwif
->hwgroup
= NULL
;
1015 * Group up with any other hwifs that share our irq(s).
1017 for (index
= 0; index
< MAX_HWIFS
; index
++) {
1018 ide_hwif_t
*h
= &ide_hwifs
[index
];
1019 if (h
->hwgroup
) { /* scan only initialized hwif's */
1020 if (hwif
->irq
== h
->irq
) {
1021 hwif
->sharing_irq
= h
->sharing_irq
= 1;
1022 if (hwif
->chipset
!= ide_pci
||
1023 h
->chipset
!= ide_pci
) {
1024 save_match(hwif
, h
, &match
);
1027 if (hwif
->serialized
) {
1028 if (hwif
->mate
&& hwif
->mate
->irq
== h
->irq
)
1029 save_match(hwif
, h
, &match
);
1031 if (h
->serialized
) {
1032 if (h
->mate
&& hwif
->irq
== h
->mate
->irq
)
1033 save_match(hwif
, h
, &match
);
1037 #endif /* MAX_HWIFS > 1 */
1039 * If we are still without a hwgroup, then form a new one
1042 hwgroup
= match
->hwgroup
;
1043 hwif
->hwgroup
= hwgroup
;
1045 * Link us into the hwgroup.
1046 * This must be done early, do ensure that unexpected_intr
1047 * can find the hwif and prevent irq storms.
1048 * No drives are attached to the new hwif, choose_drive
1049 * can't do anything stupid (yet).
1050 * Add ourself as the 2nd entry to the hwgroup->hwif
1051 * linked list, the first entry is the hwif that owns
1052 * hwgroup->handler - do not change that.
1054 spin_lock_irq(&ide_lock
);
1055 hwif
->next
= hwgroup
->hwif
->next
;
1056 hwgroup
->hwif
->next
= hwif
;
1057 BUG_ON(hwif
->next
== hwif
);
1058 spin_unlock_irq(&ide_lock
);
1060 hwgroup
= kmalloc_node(sizeof(*hwgroup
), GFP_KERNEL
|__GFP_ZERO
,
1061 hwif_to_node(hwif
));
1062 if (hwgroup
== NULL
)
1065 hwif
->hwgroup
= hwgroup
;
1066 hwgroup
->hwif
= hwif
->next
= hwif
;
1068 init_timer(&hwgroup
->timer
);
1069 hwgroup
->timer
.function
= &ide_timer_expiry
;
1070 hwgroup
->timer
.data
= (unsigned long) hwgroup
;
1074 * Allocate the irq, if not already obtained for another hwif
1076 if (!match
|| match
->irq
!= hwif
->irq
) {
1078 #if defined(__mc68000__)
1080 #endif /* __mc68000__ */
1082 if (IDE_CHIPSET_IS_PCI(hwif
->chipset
))
1085 if (io_ports
->ctl_addr
)
1086 hwif
->set_irq(hwif
, 1);
1088 if (request_irq(hwif
->irq
,&ide_intr
,sa
,hwif
->name
,hwgroup
))
1092 if (!hwif
->rqsize
) {
1093 if ((hwif
->host_flags
& IDE_HFLAG_NO_LBA48
) ||
1094 (hwif
->host_flags
& IDE_HFLAG_NO_LBA48_DMA
))
1097 hwif
->rqsize
= 65536;
1100 #if !defined(__mc68000__)
1101 printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif
->name
,
1102 io_ports
->data_addr
, io_ports
->status_addr
,
1103 io_ports
->ctl_addr
, hwif
->irq
);
1105 printk("%s at 0x%08lx on irq %d", hwif
->name
,
1106 io_ports
->data_addr
, hwif
->irq
);
1107 #endif /* __mc68000__ */
1109 printk(" (%sed with %s)",
1110 hwif
->sharing_irq
? "shar" : "serializ", match
->name
);
1113 mutex_unlock(&ide_cfg_mtx
);
1116 ide_remove_port_from_hwgroup(hwif
);
1118 mutex_unlock(&ide_cfg_mtx
);
1122 static int ata_lock(dev_t dev
, void *data
)
1124 /* FIXME: we want to pin hwif down */
1128 static struct kobject
*ata_probe(dev_t dev
, int *part
, void *data
)
1130 ide_hwif_t
*hwif
= data
;
1131 int unit
= *part
>> PARTN_BITS
;
1132 ide_drive_t
*drive
= &hwif
->drives
[unit
];
1133 if (!drive
->present
)
1136 if (drive
->media
== ide_disk
)
1137 request_module("ide-disk");
1139 request_module("ide-scsi");
1140 if (drive
->media
== ide_cdrom
|| drive
->media
== ide_optical
)
1141 request_module("ide-cd");
1142 if (drive
->media
== ide_tape
)
1143 request_module("ide-tape");
1144 if (drive
->media
== ide_floppy
)
1145 request_module("ide-floppy");
1150 static struct kobject
*exact_match(dev_t dev
, int *part
, void *data
)
1152 struct gendisk
*p
= data
;
1153 *part
&= (1 << PARTN_BITS
) - 1;
1154 return &p
->dev
.kobj
;
1157 static int exact_lock(dev_t dev
, void *data
)
1159 struct gendisk
*p
= data
;
1166 void ide_register_region(struct gendisk
*disk
)
1168 blk_register_region(MKDEV(disk
->major
, disk
->first_minor
),
1169 disk
->minors
, NULL
, exact_match
, exact_lock
, disk
);
1172 EXPORT_SYMBOL_GPL(ide_register_region
);
1174 void ide_unregister_region(struct gendisk
*disk
)
1176 blk_unregister_region(MKDEV(disk
->major
, disk
->first_minor
),
1180 EXPORT_SYMBOL_GPL(ide_unregister_region
);
1182 void ide_init_disk(struct gendisk
*disk
, ide_drive_t
*drive
)
1184 ide_hwif_t
*hwif
= drive
->hwif
;
1185 unsigned int unit
= (drive
->select
.all
>> 4) & 1;
1187 disk
->major
= hwif
->major
;
1188 disk
->first_minor
= unit
<< PARTN_BITS
;
1189 sprintf(disk
->disk_name
, "hd%c", 'a' + hwif
->index
* MAX_DRIVES
+ unit
);
1190 disk
->queue
= drive
->queue
;
1193 EXPORT_SYMBOL_GPL(ide_init_disk
);
1195 static void ide_remove_drive_from_hwgroup(ide_drive_t
*drive
)
1197 ide_hwgroup_t
*hwgroup
= drive
->hwif
->hwgroup
;
1199 if (drive
== drive
->next
) {
1200 /* special case: last drive from hwgroup. */
1201 BUG_ON(hwgroup
->drive
!= drive
);
1202 hwgroup
->drive
= NULL
;
1206 walk
= hwgroup
->drive
;
1207 while (walk
->next
!= drive
)
1209 walk
->next
= drive
->next
;
1210 if (hwgroup
->drive
== drive
) {
1211 hwgroup
->drive
= drive
->next
;
1212 hwgroup
->hwif
= hwgroup
->drive
->hwif
;
1215 BUG_ON(hwgroup
->drive
== drive
);
1218 static void drive_release_dev (struct device
*dev
)
1220 ide_drive_t
*drive
= container_of(dev
, ide_drive_t
, gendev
);
1222 ide_proc_unregister_device(drive
);
1224 spin_lock_irq(&ide_lock
);
1225 ide_remove_drive_from_hwgroup(drive
);
1229 /* Messed up locking ... */
1230 spin_unlock_irq(&ide_lock
);
1231 blk_cleanup_queue(drive
->queue
);
1232 spin_lock_irq(&ide_lock
);
1233 drive
->queue
= NULL
;
1234 spin_unlock_irq(&ide_lock
);
1236 complete(&drive
->gendev_rel_comp
);
1239 static int hwif_init(ide_hwif_t
*hwif
)
1244 hwif
->irq
= __ide_default_irq(hwif
->io_ports
.data_addr
);
1246 printk("%s: DISABLED, NO IRQ\n", hwif
->name
);
1251 if (register_blkdev(hwif
->major
, hwif
->name
))
1254 if (!hwif
->sg_max_nents
)
1255 hwif
->sg_max_nents
= PRD_ENTRIES
;
1257 hwif
->sg_table
= kmalloc(sizeof(struct scatterlist
)*hwif
->sg_max_nents
,
1259 if (!hwif
->sg_table
) {
1260 printk(KERN_ERR
"%s: unable to allocate SG table.\n", hwif
->name
);
1264 sg_init_table(hwif
->sg_table
, hwif
->sg_max_nents
);
1266 if (init_irq(hwif
) == 0)
1269 old_irq
= hwif
->irq
;
1271 * It failed to initialise. Find the default IRQ for
1272 * this port and try that.
1274 hwif
->irq
= __ide_default_irq(hwif
->io_ports
.data_addr
);
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;
1340 if (port_ops
&& port_ops
->init_dev
)
1341 port_ops
->init_dev(drive
);
1345 static void ide_init_port(ide_hwif_t
*hwif
, unsigned int port
,
1346 const struct ide_port_info
*d
)
1348 hwif
->channel
= port
;
1351 hwif
->chipset
= d
->chipset
;
1356 if ((!hwif
->irq
&& (d
->host_flags
& IDE_HFLAG_LEGACY_IRQS
)) ||
1357 (d
->host_flags
& IDE_HFLAG_FORCE_LEGACY_IRQS
))
1358 hwif
->irq
= port
? 15 : 14;
1360 /* ->host_flags may be set by ->init_iops (or even earlier...) */
1361 hwif
->host_flags
|= d
->host_flags
;
1362 hwif
->pio_mask
= d
->pio_mask
;
1364 /* ->set_pio_mode for DTC2278 is currently limited to port 0 */
1365 if (hwif
->chipset
!= ide_dtc2278
|| hwif
->channel
== 0)
1366 hwif
->port_ops
= d
->port_ops
;
1368 hwif
->swdma_mask
= d
->swdma_mask
;
1369 hwif
->mwdma_mask
= d
->mwdma_mask
;
1370 hwif
->ultra_mask
= d
->udma_mask
;
1372 if ((d
->host_flags
& IDE_HFLAG_NO_DMA
) == 0) {
1376 rc
= d
->init_dma(hwif
, d
);
1378 rc
= ide_hwif_setup_dma(hwif
, d
);
1381 printk(KERN_INFO
"%s: DMA disabled\n", hwif
->name
);
1383 hwif
->swdma_mask
= 0;
1384 hwif
->mwdma_mask
= 0;
1385 hwif
->ultra_mask
= 0;
1386 } else if (d
->dma_ops
)
1387 hwif
->dma_ops
= d
->dma_ops
;
1390 if ((d
->host_flags
& IDE_HFLAG_SERIALIZE
) ||
1391 ((d
->host_flags
& IDE_HFLAG_SERIALIZE_DMA
) && hwif
->dma_base
)) {
1393 hwif
->mate
->serialized
= hwif
->serialized
= 1;
1396 if (d
->host_flags
& IDE_HFLAG_RQSIZE_256
)
1399 /* call chipset specific routine for each enabled port */
1404 static void ide_port_cable_detect(ide_hwif_t
*hwif
)
1406 const struct ide_port_ops
*port_ops
= hwif
->port_ops
;
1408 if (port_ops
&& port_ops
->cable_detect
&& (hwif
->ultra_mask
& 0x78)) {
1409 if (hwif
->cbl
!= ATA_CBL_PATA40_SHORT
)
1410 hwif
->cbl
= port_ops
->cable_detect(hwif
);
1414 static ssize_t
store_delete_devices(struct device
*portdev
,
1415 struct device_attribute
*attr
,
1416 const char *buf
, size_t n
)
1418 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1420 if (strncmp(buf
, "1", n
))
1423 ide_port_unregister_devices(hwif
);
1428 static DEVICE_ATTR(delete_devices
, S_IWUSR
, NULL
, store_delete_devices
);
1430 static ssize_t
store_scan(struct device
*portdev
,
1431 struct device_attribute
*attr
,
1432 const char *buf
, size_t n
)
1434 ide_hwif_t
*hwif
= dev_get_drvdata(portdev
);
1436 if (strncmp(buf
, "1", n
))
1439 ide_port_unregister_devices(hwif
);
1440 ide_port_scan(hwif
);
1445 static DEVICE_ATTR(scan
, S_IWUSR
, NULL
, store_scan
);
1447 static struct device_attribute
*ide_port_attrs
[] = {
1448 &dev_attr_delete_devices
,
1453 static int ide_sysfs_register_port(ide_hwif_t
*hwif
)
1457 for (i
= 0; ide_port_attrs
[i
]; i
++) {
1458 rc
= device_create_file(hwif
->portdev
, ide_port_attrs
[i
]);
1467 * ide_find_port_slot - find free ide_hwifs[] slot
1470 * Return the new hwif. If we are out of free slots return NULL.
1473 ide_hwif_t
*ide_find_port_slot(const struct ide_port_info
*d
)
1477 u8 bootable
= (d
&& (d
->host_flags
& IDE_HFLAG_NON_BOOTABLE
)) ? 0 : 1;
1480 * Claim an unassigned slot.
1482 * Give preference to claiming other slots before claiming ide0/ide1,
1483 * just in case there's another interface yet-to-be-scanned
1484 * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults).
1486 * Unless there is a bootable card that does not use the standard
1487 * ports 0x1f0/0x170 (the ide0/ide1 defaults).
1490 i
= (d
&& (d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
)) ? 1 : 0;
1492 for (; i
< MAX_HWIFS
; i
++) {
1493 hwif
= &ide_hwifs
[i
];
1494 if (hwif
->chipset
== ide_unknown
)
1498 for (i
= 2; i
< MAX_HWIFS
; i
++) {
1499 hwif
= &ide_hwifs
[i
];
1500 if (hwif
->chipset
== ide_unknown
)
1503 for (i
= 0; i
< 2 && i
< MAX_HWIFS
; i
++) {
1504 hwif
= &ide_hwifs
[i
];
1505 if (hwif
->chipset
== ide_unknown
)
1510 printk(KERN_ERR
"%s: no free slot for interface\n",
1511 d
? d
->name
: "ide");
1516 ide_init_port_data(hwif
, i
);
1519 EXPORT_SYMBOL_GPL(ide_find_port_slot
);
1521 int ide_device_add_all(u8
*idx
, const struct ide_port_info
*d
, hw_regs_t
**hws
)
1523 ide_hwif_t
*hwif
, *mate
= NULL
;
1526 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1527 if (idx
[i
] == 0xff) {
1532 hwif
= &ide_hwifs
[idx
[i
]];
1534 ide_init_port_hw(hwif
, hws
[i
]);
1535 ide_port_apply_params(hwif
);
1542 if ((i
& 1) && mate
) {
1547 mate
= (i
& 1) ? NULL
: hwif
;
1549 ide_init_port(hwif
, i
& 1, d
);
1550 ide_port_cable_detect(hwif
);
1551 ide_port_init_devices(hwif
);
1554 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1558 hwif
= &ide_hwifs
[idx
[i
]];
1560 if (ide_probe_port(hwif
) == 0)
1563 if (hwif
->chipset
!= ide_4drives
|| !hwif
->mate
||
1564 !hwif
->mate
->present
)
1565 ide_register_port(hwif
);
1568 ide_port_tune_devices(hwif
);
1571 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1575 hwif
= &ide_hwifs
[idx
[i
]];
1577 if (hwif_init(hwif
) == 0) {
1578 printk(KERN_INFO
"%s: failed to initialize IDE "
1579 "interface\n", hwif
->name
);
1586 ide_port_setup_devices(hwif
);
1588 ide_acpi_init(hwif
);
1591 ide_acpi_port_init_devices(hwif
);
1594 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1598 hwif
= &ide_hwifs
[idx
[i
]];
1600 if (hwif
->chipset
== ide_unknown
)
1601 hwif
->chipset
= ide_generic
;
1604 hwif_register_devices(hwif
);
1607 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1611 hwif
= &ide_hwifs
[idx
[i
]];
1613 ide_sysfs_register_port(hwif
);
1614 ide_proc_register_port(hwif
);
1617 ide_proc_port_register_devices(hwif
);
1622 EXPORT_SYMBOL_GPL(ide_device_add_all
);
1624 int ide_device_add(u8
*idx
, const struct ide_port_info
*d
, hw_regs_t
**hws
)
1626 hw_regs_t
*hws_all
[MAX_HWIFS
];
1627 u8 idx_all
[MAX_HWIFS
];
1630 for (i
= 0; i
< MAX_HWIFS
; i
++) {
1631 hws_all
[i
] = (i
< 4) ? hws
[i
] : NULL
;
1632 idx_all
[i
] = (i
< 4) ? idx
[i
] : 0xff;
1635 return ide_device_add_all(idx_all
, d
, hws_all
);
1637 EXPORT_SYMBOL_GPL(ide_device_add
);
1639 void ide_port_scan(ide_hwif_t
*hwif
)
1641 ide_port_apply_params(hwif
);
1642 ide_port_cable_detect(hwif
);
1643 ide_port_init_devices(hwif
);
1645 if (ide_probe_port(hwif
) < 0)
1650 ide_port_tune_devices(hwif
);
1651 ide_acpi_port_init_devices(hwif
);
1652 ide_port_setup_devices(hwif
);
1653 hwif_register_devices(hwif
);
1654 ide_proc_port_register_devices(hwif
);
1656 EXPORT_SYMBOL_GPL(ide_port_scan
);
1658 static void ide_legacy_init_one(u8
*idx
, hw_regs_t
**hws
, hw_regs_t
*hw
,
1659 u8 port_no
, const struct ide_port_info
*d
,
1660 unsigned long config
)
1663 unsigned long base
, ctl
;
1676 if (!request_region(base
, 8, d
->name
)) {
1677 printk(KERN_ERR
"%s: I/O resource 0x%lX-0x%lX not free.\n",
1678 d
->name
, base
, base
+ 7);
1682 if (!request_region(ctl
, 1, d
->name
)) {
1683 printk(KERN_ERR
"%s: I/O resource 0x%lX not free.\n",
1685 release_region(base
, 8);
1689 ide_std_init_ports(hw
, base
, ctl
);
1691 hw
->chipset
= d
->chipset
;
1693 hwif
= ide_find_port_slot(d
);
1695 hwif
->chipset
= hw
->chipset
;
1698 hwif
->config_data
= config
;
1701 idx
[port_no
] = hwif
->index
;
1705 int ide_legacy_device_add(const struct ide_port_info
*d
, unsigned long config
)
1707 u8 idx
[4] = { 0xff, 0xff, 0xff, 0xff };
1708 hw_regs_t hw
[2], *hws
[] = { NULL
, NULL
, NULL
, NULL
};
1710 memset(&hw
, 0, sizeof(hw
));
1712 if ((d
->host_flags
& IDE_HFLAG_QD_2ND_PORT
) == 0)
1713 ide_legacy_init_one(idx
, hws
, &hw
[0], 0, d
, config
);
1714 ide_legacy_init_one(idx
, hws
, &hw
[1], 1, d
, config
);
1716 if (idx
[0] == 0xff && idx
[1] == 0xff &&
1717 (d
->host_flags
& IDE_HFLAG_SINGLE
))
1720 ide_device_add(idx
, d
, hws
);
1724 EXPORT_SYMBOL_GPL(ide_legacy_device_add
);