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authorTejun Heo <tj@kernel.org>2010-03-30 10:28:32 +0900
committerJeff Garzik <jgarzik@redhat.com>2010-05-14 17:08:02 -0400
commit83f2b9630c5875ee872c11d98a0e26888514c1b3 (patch)
tree434dedfdcca76d8fdb7cdb919ac1d149b349e90c /drivers/ata
parentec569af8584e977a3474c197da53ae2ba5823caf (diff)
downloadlinux-83f2b9630c5875ee872c11d98a0e26888514c1b3.tar.bz2
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>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/ahci.c38
-rw-r--r--drivers/ata/ahci.h1
2 files changed, 29 insertions, 10 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ec1221879f9a..c44d11237db4 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -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;
}
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 111a878d9188..733def27df07 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -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 */