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9bd7496f5d
linux/drivers/ide
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Mikulas Patocka 9bd7496f5d ide: Serialize CMD643 and CMD646 to fix a hardware bug with SSD 
CMD646 corrupts data on concurrent transfers on both channels when IDE SSD is
connected to one of the channels.

Setup that demonstrates this hardware bug: Ultra 5, onboard CMD646, rev 3.
/dev/hda is 8GB Seagate ST38410A in MWDMA2
/dev/hdd is 32GB SSD SiliconHardDisk in MWDMA2

- When reading /dev/hdd (for example with dd or fsck), reads from /dev/hda
  are corrupted, there are twiddled single bits 1->0 and some full 32-bit
  words corrupted, sometimes commands fail (which switches /dev/hda to
  PIO mode but the corruptions happen even in PIO).
- Reads from /dev/hdd don't seem to be corrupted (i.e. fsck passes fine).
- When I connected normal rotating harddisk to /dev/hdd, there was no
  corruption, so the corruption is something specific to SSD.
- I tried the same setup on a PCI card with CMD649 and saw no corruption.

This patch serializes the operation for CMD646 and 643 (I didn't test
CMD643 but it may have the same hw bug too because it's earlier design).
CMD649 is good. I don't know anything about CMD 648.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Frans Pop <elendil@planet.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-29 03:02:06 -07:00
..
aec62xx.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
ali14xx.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
alim15x3.c alim15x3: Remove historical hacks, re-enable init_hwif for PowerPC 2009-04-30 18:38:01 +02:00
amd74xx.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
at91_ide.c at91_ide: remove headers specific for at91sam9263 2009-08-15 18:55:09 -07:00
atiixp.c ahci: Add AMD SB900 SATA/IDE controller device IDs 2009-09-11 02:31:27 -04:00
au1xxx-ide.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
buddha.c ide: move ack_intr() method into 'struct ide_port_ops' (take 2) 2009-06-15 18:52:58 +02:00
cmd64x.c ide: Serialize CMD643 and CMD646 to fix a hardware bug with SSD 2009-10-29 03:02:06 -07:00
cmd640.c cmd640: implement test_irq() method 2009-06-15 18:52:58 +02:00
cs5520.c ide cs5520: Initialize second port's interrupt number. 2009-06-24 02:36:17 -07:00
cs5530.c ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3) 2009-03-31 20:15:27 +02:00
cs5535.c ide: remove useless subdirs from drivers/ide/ 2008-10-21 20:57:23 +02:00
cs5536.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
cy82c693.c ide: remove HWIF() macro 2009-01-06 17:20:52 +01:00
delkin_cb.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
dtc2278.c ide: add IDE_HFLAG_DTC2278 host flag 2009-03-27 12:46:28 +01:00
falconide.c ide: move ack_intr() method into 'struct ide_port_ops' (take 2) 2009-06-15 18:52:58 +02:00
gayle.c ide: move ack_intr() method into 'struct ide_port_ops' (take 2) 2009-06-15 18:52:58 +02:00
hpt366.c ide: add IDE_DFLAG_NIEN_QUIRK device flag 2009-06-07 15:37:10 +02:00
ht6560b.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
icside.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
ide_platform.c ide: remove driver_data direct access of struct device 2009-06-15 21:30:26 -07:00
ide-4drives.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
ide-acpi.c ide: fix resume for CONFIG_BLK_DEV_IDEACPI=y 2009-06-29 19:20:42 -07:00
ide-atapi.c Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-06-20 10:11:11 -07:00
ide-cd_ioctl.c ide: remove IDE_AFLAG_NO_DOORLOCKING 2008-10-17 18:09:11 +02:00
ide-cd_verbose.c block: replace sizeof(rq->cmd) with BLK_MAX_CDB 2008-04-29 14:48:55 +02:00
ide-cd.c const: make block_device_operations const 2009-09-22 07:17:25 -07:00
ide-cd.h ide-cd: convert to using generic sense request 2009-04-28 07:37:30 +02:00
ide-cs.c pcmcia: add CNF-CDROM-ID for ide 2009-08-14 13:09:32 -07:00
ide-devsets.c ide: always kill the whole request on error 2009-06-25 23:57:16 -07:00
ide-disk_ioctl.c [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-disk_proc.c ide: convert to ->proc_fops 2009-09-01 17:52:57 -07:00
ide-disk.c ide: fix memory leak when flush command is issued 2009-07-21 20:23:46 -07:00
ide-disk.h [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-dma-sff.c ide: remove wmb() from ide-dma-sff.c and scc_pata.c 2009-04-08 14:12:49 +02:00
ide-dma.c ide: relax DMA info validity checking 2009-06-24 00:32:32 -07:00
ide-eh.c ide: always kill the whole request on error 2009-06-25 23:57:16 -07:00
ide-floppy_ioctl.c ide-atapi: remove pc->buf 2009-05-15 06:44:38 +02:00
ide-floppy_proc.c ide: convert to ->proc_fops 2009-09-01 17:52:57 -07:00
ide-floppy.c ide: always kill the whole request on error 2009-06-25 23:57:16 -07:00
ide-floppy.h [PATCH] switch ide_disk_ops ->ioctl() to sane prototype 2008-10-21 07:47:30 -04:00
ide-gd.c const: make block_device_operations const 2009-09-22 07:17:25 -07:00
ide-gd.h ide: move ->failed_pc to ide_drive_t 2009-03-27 12:46:34 +01:00
ide-generic.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
ide-h8300.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
ide-io-std.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
ide-io.c Revert "ide: improve handling of Power Management requests" 2009-07-06 12:39:27 -07:00
ide-ioctls.c ide: fix races in handling of user-space SET XFER commands 2009-08-07 10:43:00 -07:00
ide-iops.c ide: fixup for fujitsu disk 2009-09-15 01:36:25 -07:00
ide-legacy.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
ide-lib.c Merge branch 'master' into for-2.6.31 2009-05-22 20:28:35 +02:00
ide-park.c ide: use blk_run_queue() instead of blk_start_queueing() 2009-04-28 07:37:28 +02:00
ide-pci-generic.c ide_pci_generic: add quirk for Netcell ATA RAID 2009-05-30 20:06:54 +02:00
ide-pio-blacklist.c ide: move PIO blacklist to ide-pio-blacklist.c 2008-07-16 20:33:39 +02:00
ide-pm.c ide: fix resume for CONFIG_BLK_DEV_IDEACPI=y 2009-06-29 19:20:42 -07:00
ide-pnp.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
ide-probe.c Revert "Revert "ide: try to use PIO Mode 0 during probe if possible"" 2009-10-07 04:07:18 -07:00
ide-proc.c ide: use printk_once 2009-09-22 16:29:00 -07:00
ide-scan-pci.c ide: replace remaining __FUNCTION__ occurrences 2008-04-26 22:25:20 +02:00
ide-sysfs.c ide: move sysfs support to ide-sysfs.c 2009-01-02 16:12:48 +01:00
ide-tape.c const: make block_device_operations const 2009-09-22 07:17:25 -07:00
ide-taskfile.c ide: fix races in handling of user-space SET XFER commands 2009-08-07 10:43:00 -07:00
ide-timings.c ide: add support for CFA specified transfer modes (take 3) 2009-03-31 20:15:28 +02:00
ide-xfer-mode.c ide: don't enable IORDY at a probe time 2009-06-15 18:52:54 +02:00
ide.c ide: preserve Host Protected Area by default (v2) 2009-06-07 13:52:52 +02:00
it821x.c ide: add ->dma_clear method and remove ->dma_timeout one 2009-03-31 20:15:19 +02:00
it8172.c ide: IORDY handling fixes 2009-06-15 18:52:53 +02:00
it8213.c ide: IORDY handling fixes 2009-06-15 18:52:53 +02:00
jmicron.c ide: Switch to a common address 2008-11-02 21:40:08 +01:00
Kconfig trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
macide.c ide: move ack_intr() method into 'struct ide_port_ops' (take 2) 2009-06-15 18:52:58 +02:00
Makefile ide: merge ide_arm and ide_generic host drivers 2009-03-31 20:15:24 +02:00
ns87415.c ide: refactor tf_read() method 2009-04-08 14:13:03 +02:00
opti621.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
palm_bk3710.c IDE: palm_bk3710: convert clock usage after clkdev conversion 2009-08-15 18:55:08 -07:00
pdc202xx_new.c ide: respect quirk_drives[] list on all controllers 2009-06-07 15:37:09 +02:00
pdc202xx_old.c pdc202xx_old: implement test_irq() method (take 2) 2009-06-15 18:52:59 +02:00
piix.c ide: IORDY handling fixes 2009-06-15 18:52:53 +02:00
pmac.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
q40ide.c ide: move ack_intr() method into 'struct ide_port_ops' (take 2) 2009-06-15 18:52:58 +02:00
qd65xx.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
qd65xx.h ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
rapide.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
rz1000.c rz1000: apply chipset quirks early (v2) 2008-12-29 20:27:33 +01:00
sc1200.c ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3) 2009-03-31 20:15:27 +02:00
scc_pata.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
serverworks.c ide: fix ->init_chipset method to return 'int' value 2009-03-24 23:22:53 +01:00
setup-pci.c ide: re-implement ide_pci_init_one() on top of ide_pci_init_two() 2009-06-10 14:37:21 +02:00
sgiioc4.c sgiioc4: coding style cleanup 2009-06-15 18:52:55 +02:00
siimage.c siimage: implement test_irq() method 2009-06-15 18:53:00 +02:00
sis5513.c sis5513: fix PIO setup for ATAPI devices 2009-10-07 04:07:17 -07:00
sl82c105.c ide: do not access ide_drive_t 'drive_data' field directly 2009-06-15 22:13:44 +02:00
slc90e66.c ide: IORDY handling fixes 2009-06-15 18:52:53 +02:00
tc86c001.c ide: convert to rq pos and nr_sectors accessors 2009-05-11 09:50:54 +02:00
triflex.c ide: remove HWIF() macro 2009-01-06 17:20:52 +01:00
trm290.c ide: turn selectproc() method into dev_select() method (take 5) 2009-03-31 20:15:32 +02:00
tx4938ide.c ide: remove hw_regs_t typedef 2009-05-17 19:12:25 +02:00
tx4939ide.c Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-06-12 09:29:42 -07:00
umc8672.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
via82cxxx.c via82cxxx: Add VIA VX855 PCI Device ID 2009-05-22 16:23:39 +02:00