diff options
| author | Tejun Heo <tj@kernel.org> | 2009-09-16 04:18:03 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-10-06 00:26:29 -0400 |
| commit | f80ae7e45a0e03da188494c6e947a5c8b0cdfb4a (patch) | |
| tree | f5e6e64cdce07c6e202ba3d0f96a54845550a031 /drivers/ata/ahci.c | |
| parent | 110f66d25c33c2259b1125255fa7063ab07b8340 (diff) | |
ahci: filter FPDMA non-zero offset enable for Aspire 3810T
Curiously, Aspire 3810T issues many SATA feature enable commands via
_GTF, of which one is invalid and another is not supported by the
drive. In the process, it also enables FPDMA non-zero offset.
However, the feature also needs to be supported and enabled from the
controller and it's wrong to enable it from _GTF unless the controller
can do it by default.
Currently, this ends up enabling FPDMA non-zero offset only on the
drive side leading to NCQ command failures and eventual disabling of
NCQ. This patch makes libata filter out FPDMA non-zero offset enable
for the machine.
This was reported by Marcus Meissner in bnc#522790.
https://bugzilla.novell.com/show_bug.cgi?id=522790
Reported-by: Marcus Meissner <meissner@novell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index a47d309df2f2..4edca6eb73ae 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -2884,6 +2884,50 @@ static bool ahci_broken_online(struct pci_dev *pdev) return pdev->bus->number == (val >> 8) && pdev->devfn == (val & 0xff); } +static void ahci_gtf_filter_workaround(struct ata_host *host) +{ + static const struct dmi_system_id sysids[] = { + /* + * Aspire 3810T issues a bunch of SATA enable commands + * via _GTF including an invalid one and one which is + * rejected by the device. Among the successful ones + * is FPDMA non-zero offset enable which when enabled + * only on the drive side leads to NCQ command + * failures. Filter it out. + */ + { + .ident = "Aspire 3810T", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3810T"), + }, + .driver_data = (void *)ATA_ACPI_FILTER_FPDMA_OFFSET, + }, + { } + }; + const struct dmi_system_id *dmi = dmi_first_match(sysids); + unsigned int filter; + int i; + + if (!dmi) + return; + + filter = (unsigned long)dmi->driver_data; + dev_printk(KERN_INFO, host->dev, + "applying extra ACPI _GTF filter 0x%x for %s\n", + filter, dmi->ident); + + for (i = 0; i < host->n_ports; i++) { + struct ata_port *ap = host->ports[i]; + struct ata_link *link; + struct ata_device *dev; + + ata_for_each_link(link, ap, EDGE) + ata_for_each_dev(dev, link, ALL) + dev->gtf_filter |= filter; + } +} + static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { static int printed_version; @@ -3049,6 +3093,9 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* apply workaround for ASUS P5W DH Deluxe mainboard */ ahci_p5wdh_workaround(host); + /* apply gtf filter quirk */ + ahci_gtf_filter_workaround(host); + /* initialize adapter */ rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64); if (rc) |