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| author | Jeff Garzik <jeff@garzik.org> | 2006-08-24 10:51:38 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-08-24 10:51:38 +0400 |
| commit | 54a86bfc3d4601be9c36cd4e8a1bdc580c98fa6a (patch) | |
| tree | 41956fc365923a8c85037c51b8085076d7d8a303 /drivers/ata/ata_piix.c | |
| parent | 81ce3c4b4d3771866ce74b1c3856b45c3e2549fc (diff) | |
| parent | ac2164d5e425fa4755bdbab9641d8dab7239b6f5 (diff) | |
| download | linux-54a86bfc3d4601be9c36cd4e8a1bdc580c98fa6a.tar.xz | |
Merge branch 'upstream-fixes' into upstream
Diffstat (limited to 'drivers/ata/ata_piix.c')
| -rw-r--r-- | drivers/ata/ata_piix.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 6846b5629ed2..0ca4c3b78dc5 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -390,7 +390,8 @@ static struct ata_port_info piix_port_info[] = { /* ich5_sata */ { .sht = &piix_sht, - .host_flags = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, + .host_flags = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR | + PIIX_FLAG_IGNORE_PCS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = 0x7f, /* udma0-6 */ @@ -467,6 +468,11 @@ MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, piix_pci_tbl); MODULE_VERSION(DRV_VERSION); +static int force_pcs = 0; +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)"); + /** * piix_pata_cbl_detect - Probe host controller cable detect info * @ap: Port for which cable detect info is desired @@ -811,6 +817,7 @@ static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev) } static void __devinit piix_init_pcs(struct pci_dev *pdev, + struct ata_port_info *pinfo, const struct piix_map_db *map_db) { u16 pcs, new_pcs; @@ -824,6 +831,18 @@ static void __devinit piix_init_pcs(struct pci_dev *pdev, pci_write_config_word(pdev, ICH5_PCS, new_pcs); msleep(150); } + + if (force_pcs == 1) { + dev_printk(KERN_INFO, &pdev->dev, + "force ignoring PCS (0x%x)\n", new_pcs); + pinfo[0].host_flags |= PIIX_FLAG_IGNORE_PCS; + pinfo[1].host_flags |= PIIX_FLAG_IGNORE_PCS; + } else if (force_pcs == 2) { + dev_printk(KERN_INFO, &pdev->dev, + "force honoring PCS (0x%x)\n", new_pcs); + pinfo[0].host_flags &= ~PIIX_FLAG_IGNORE_PCS; + pinfo[1].host_flags &= ~PIIX_FLAG_IGNORE_PCS; + } } static void __devinit piix_init_sata_map(struct pci_dev *pdev, @@ -932,7 +951,8 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) if (host_flags & ATA_FLAG_SATA) { piix_init_sata_map(pdev, port_info, piix_map_db_table[ent->driver_data]); - piix_init_pcs(pdev, piix_map_db_table[ent->driver_data]); + piix_init_pcs(pdev, port_info, + piix_map_db_table[ent->driver_data]); } /* On ICH5, some BIOSen disable the interrupt using the |