diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2006-10-10 14:28:11 -0700 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-01 22:40:25 -0500 |
| commit | fc085150b491bfc186efbca90a14cf907a3060a9 (patch) | |
| tree | b5bf8b6eb6d0dabd8699e6b41c239619590659e2 /drivers/ata | |
| parent | 2f27ce03628acdb81ead4abe914c713e04a3229e (diff) | |
[PATCH] libata: add 40pin "short" cable support, honour drive side speed detection
[deweerdt@free.fr: build fix]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Frederik Deweerdt <deweerdt@free.fr>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ata_piix.c | 31 | ||||
| -rw-r--r-- | drivers/ata/libata-core.c | 7 | ||||
| -rw-r--r-- | drivers/ata/pata_ali.c | 2 |
3 files changed, 38 insertions, 2 deletions
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 720174d628f..14b726b9f98 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -93,7 +93,7 @@ #include <linux/libata.h> #define DRV_NAME "ata_piix" -#define DRV_VERSION "2.00ac6" +#define DRV_VERSION "2.00ac7" enum { PIIX_IOCFG = 0x54, /* IDE I/O configuration register */ @@ -571,6 +571,23 @@ module_param(force_pcs, int, 0444); MODULE_PARM_DESC(force_pcs, "force honoring or ignoring PCS to work around " "device mis-detection (0=default, 1=ignore PCS, 2=honor PCS)"); +struct ich_laptop { + u16 device; + u16 subvendor; + u16 subdevice; +}; + +/* + * List of laptops that use short cables rather than 80 wire + */ + +static const struct ich_laptop ich_laptop[] = { + /* devid, subvendor, subdev */ + { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */ + /* end marker */ + { 0, } +}; + /** * piix_pata_cbl_detect - Probe host controller cable detect info * @ap: Port for which cable detect info is desired @@ -585,12 +602,24 @@ MODULE_PARM_DESC(force_pcs, "force honoring or ignoring PCS to work around " static void ich_pata_cbl_detect(struct ata_port *ap) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); + const struct ich_laptop *lap = &ich_laptop[0]; u8 tmp, mask; /* no 80c support in host controller? */ if ((ap->udma_mask & ~ATA_UDMA_MASK_40C) == 0) goto cbl40; + /* Check for specials - Acer Aspire 5602WLMi */ + while (lap->device) { + if (lap->device == pdev->device && + lap->subvendor == pdev->subsystem_vendor && + lap->subdevice == pdev->subsystem_device) { + ap->cbl = ATA_CBL_PATA40_SHORT; + return; + } + lap++; + } + /* check BIOS cable detect results */ mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC; pci_read_config_byte(pdev, PIIX_IOCFG, &tmp); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 915a55a6cc1..b896119cccd 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3119,6 +3119,13 @@ static void ata_dev_xfermask(struct ata_device *dev) */ if (ap->cbl == ATA_CBL_PATA40) xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); + /* Apply drive side cable rule. Unknown or 80 pin cables reported + * host side are checked drive side as well. Cases where we know a + * 40wire cable is used safely for 80 are not checked here. + */ + if (ata_drive_40wire(dev->id) && (ap->cbl == ATA_CBL_PATA_UNK || ap->cbl == ATA_CBL_PATA80)) + xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); + xfer_mask &= ata_pack_xfermask(dev->pio_mask, dev->mwdma_mask, dev->udma_mask); diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c index 64eed99f681..e6d2b840e87 100644 --- a/drivers/ata/pata_ali.c +++ b/drivers/ata/pata_ali.c @@ -78,7 +78,7 @@ static int ali_c2_cable_detect(struct ata_port *ap) implement the detect logic */ if (ali_cable_override(pdev)) - return ATA_CBL_PATA80; + return ATA_CBL_PATA40_SHORT; /* Host view cable detect 0x4A bit 0 primary bit 1 secondary Bit set for 40 pin */ |