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ahci: implement AHCI_HFLAG_NO_FPDMA_AA and update NV quirks 

It turns out different generations of MCPs have differing quirks.

* MCP 65-73 : FPDMA AA broken, lies about PMP support, forgets to report NCQ
* MCP 77-79 : FPDMA AA broken, lies about PMP support
* MCP 89    : FPDMA AA broken

Instead of turngin off FPDMA AA on all NVIDIAs, implement
HFLAG_NO_FPDMA_AA, define additional board IDs and apply necessary
quirks.

This fixes bko#15481 and the list of quirks is verified by Peer Chen.

  http://bugzilla.kernel.org/show_bug.cgi?id=15481

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Peer Chen <pchen@nvidia.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2010-03-30 10:28:32 +09:00 committed by Jeff Garzik
parent ec569af858
commit 83f2b9630c
2 changed files with 29 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/ata/ahci.c
View File

@ -63,6 +63,8 @@ enum board_ids {
/* board IDs for specific chipsets in alphabetical order */
board_ahci_mcp65,
board_ahci_mcp77,
board_ahci_mcp89,
board_ahci_mv,
board_ahci_sb600,
board_ahci_sb700, /* for SB700 and SB800 */
@ -72,9 +74,7 @@ enum board_ids {
board_ahci_mcp_linux = board_ahci_mcp65,
board_ahci_mcp67 = board_ahci_mcp65,
board_ahci_mcp73 = board_ahci_mcp65,
board_ahci_mcp77 = board_ahci,
board_ahci_mcp79 = board_ahci,
board_ahci_mcp89 = board_ahci,
board_ahci_mcp79 = board_ahci_mcp77,
};
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
@ -135,7 +135,24 @@ static const struct ata_port_info ahci_port_info[] = {
/* by chipsets */
[board_ahci_mcp65] =
{
AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ),
AHCI_HFLAGS (AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |
AHCI_HFLAG_YES_NCQ),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_mcp77] =
{
AHCI_HFLAGS (AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_mcp89] =
{
AHCI_HFLAGS (AHCI_HFLAG_NO_FPDMA_AA),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
@ -1103,12 +1120,13 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* prepare host */
if (hpriv->cap & HOST_CAP_NCQ) {
pi.flags |= ATA_FLAG_NCQ;
/* Auto-activate optimization is supposed to be supported on
all AHCI controllers indicating NCQ support, but it seems
to be broken at least on some NVIDIA MCP79 chipsets.
Until we get info on which NVIDIA chipsets don't have this
issue, if any, disable AA on all NVIDIA AHCIs. */
if (pdev->vendor != PCI_VENDOR_ID_NVIDIA)
/*
* Auto-activate optimization is supposed to be
* supported on all AHCI controllers indicating NCQ
* capability, but it seems to be broken on some
* chipsets including NVIDIAs.
*/
if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))
pi.flags |= ATA_FLAG_FPDMA_AA;
}

1
drivers/ata/ahci.h
View File

@ -208,6 +208,7 @@ enum {
AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
link offline */
AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
/* ap->flags bits */