linux-toradex.git/drivers/ata, branch v3.2.39

ahci: Add support for Enmotus Bobcat device.

2013-02-20T03:15:28+00:00

commit 7f9c9f8e24590e7dcd26ca408458c43df5b83e61 upstream.

Silicon does not support standard AHCI BAR assignment.  Add
vendor/device exception to force BAR 2.

Signed-off-by: Hugh Daschbach 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

ahci: support the STA2X11 I/O Hub

2013-02-20T03:15:28+00:00

commit 318893e1429a9d50569a0379d1e20b0ecc45c555 upstream.

The AHCI controller found in the STA2X11 chip uses BAR number 0
instead of 5. Also, the chip's fixup code sets a special DMA mask
for all of its PCI functions, and the mask must be preserved here.

Signed-off-by: Alessandro Rubini 
Acked-by: Giancarlo Asnaghi 
Cc: Alan Cox 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

ahci: Add identifiers for ASM106x devices

2013-02-06T04:33:52+00:00

commit 7b4f6ecacb14f384adc1a5a67ad95eb082c02bd1 upstream.

They don't always appear as AHCI class devices but instead as IDE class.

Based on an initial patch by Hiroaki Nito

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42804
Signed-off-by: Alan Cox 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

fix Null pointer dereference on disk error

2013-01-03T03:33:41+00:00

commit 26cd4d65deba587f3cf2329b6869ce02bcbe68ec upstream.

Following oops were observed when disk error happened:

[ 4272.896937] sd 0:0:0:0: [sda] Unhandled error code
[ 4272.896939] sd 0:0:0:0: [sda] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
[ 4272.896942] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 00 5a de a7 00 00 08 00
[ 4272.896951] end_request: I/O error, dev sda, sector 5955239
[ 4291.574947] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 4291.658305] IP: [] ahci_activity_show+0x1/0x40
[ 4291.730090] PGD 76dbbc067 PUD 6c4fba067 PMD 0
[ 4291.783408] Oops: 0000 [#1] SMP
[ 4291.822100] last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/sw_activity
[ 4291.934235] CPU 9
[ 4291.958301] Pid: 27942, comm: hwinfo ......

ata_scsi_find_dev could return NULL, so ata_scsi_activity_{show,store} should check if atadev is NULL.

Signed-off-by: Xiaotian Feng 
Cc: James Bottomley 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

libata: set dma_mode to 0xff in reset

2013-01-03T03:33:26+00:00

commit 5416912af75de9cba5d1c75b99a7888b0bbbd2fb upstream.

ata_device->dma_mode's initial value is zero, which is not a valid dma
mode, but ata_dma_enabled will return true for this value. This patch
sets dma_mode to 0xff in reset function, so that ata_dma_enabled will
not return true for this case, or it will cause problem for pata_acpi.

The corrsponding bugzilla page is at:
https://bugzilla.kernel.org/show_bug.cgi?id=49151

Reported-by: Phillip Wood 
Signed-off-by: Aaron Lu 
Tested-by: Szymon Janc 
Tested-by: Dutra Julio 
Acked-by: Alan Cox 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

sata_promise: fix hardreset lockdep error

2013-01-03T03:33:19+00:00

commit 3100d49d3cd236443faae9d81137c81b22d36003 upstream.

sata_promise's pdc_hard_reset_port() needs to serialize because it
flips a port-specific bit in controller register that's shared by
all ports. The code takes the ata host lock for this, but that's
broken because an interrupt may arrive on our irq during the hard
reset sequence, and that too will take the ata host lock. With
lockdep enabled a big nasty warning is seen.

Fixed by adding private state to the ata host structure, containing
a second lock used only for serializing the hard reset sequences.
This eliminated the lockdep warnings both on my test rig and on
the original reporter's machine.

Signed-off-by: Mikael Pettersson 
Tested-by: Adko Branil 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

sata_svw: check DMA start bit before reset

2013-01-03T03:32:49+00:00

commit b03e66a6be91f8389fcd902ab6c1563db1c9c06b upstream.

If kdump is triggered with pending IO, controller may not respond causing
kdump to fail.

http://marc.info/?l=linux-ide&m=133032255424658&w=2

During error recovery ata_do_dev_read_id never completes due hang
in mmio_insw.

ata_do_dev_read_id
 ata_sff_data_xfer
  ioread16_rep
   mmio_insw

if DMA start bit is cleared before reset, PIO command is successful
and kdump succeeds.

Signed-off-by: David Milburn 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

Prevent interface errors with Seagate FreeAgent GoFlex

2012-10-10T02:31:10+00:00

commit c531077f40abc9f2129c4c83a30b3f8d6ce1c0e7 upstream.

When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure,
interface errors are always seen until 1.5Gbps is negotiated [1]. This
occurs using any disk in the enclosure, and when the disk is connected
directly with a generic passive eSATAp cable, we see stable 3Gbps
operation as expected.

Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset
and renegotiation incurs.

Signed-off-by: Daniel J Blueman 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

ahci: Add alternate identifier for the 88SE9172

2012-09-19T14:05:22+00:00

commit 17c60c6b763cb5b83b0185e7d38d01d18e55a05a upstream.

This can also appear as 0x9192. Reported in bugzilla and confirmed with the
board documentation for these boards.

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42970
Signed-off-by: Alan Cox 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings

ahci: Detect Marvell 88SE9172 SATA controller

2012-05-30T23:43:48+00:00

commit 642d89252201c4155fc3946bf9cdea409e5d263e upstream.

The Marvell 88SE9172 SATA controller (PCI ID 1b4b 917a) already worked
once it was detected, but was missing an ahci_pci_tbl entry.

Boot tested on a Gigabyte Z68X-UD3H-B3 motherboard.

Signed-off-by: Matt Johnson 
Signed-off-by: Jeff Garzik 
Signed-off-by: Ben Hutchings