diff options
| -rw-r--r-- | drivers/ata/libata-core.c | 21 | ||||
| -rw-r--r-- | include/linux/ata.h | 9 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 |
3 files changed, 30 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 3ed3cf2f556..ec3ce120a51 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4241,6 +4241,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE, }, { "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE, }, + /* Devices which get the IVB wrong */ + { "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, }, + { "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, }, + /* End Marker */ { } }; @@ -4302,6 +4306,21 @@ static int ata_dma_blacklisted(const struct ata_device *dev) } /** + * ata_is_40wire - check drive side detection + * @dev: device + * + * Perform drive side detection decoding, allowing for device vendors + * who can't follow the documentation. + */ + +static int ata_is_40wire(struct ata_device *dev) +{ + if (dev->horkage & ATA_HORKAGE_IVB) + return ata_drive_40wire_relaxed(dev->id); + return ata_drive_40wire(dev->id); +} + +/** * ata_dev_xfermask - Compute supported xfermask of the given device * @dev: Device to compute xfermask for * @@ -4370,7 +4389,7 @@ static void ata_dev_xfermask(struct ata_device *dev) if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) /* UDMA/44 or higher would be available */ if ((ap->cbl == ATA_CBL_PATA40) || - (ata_drive_40wire(dev->id) && + (ata_is_40wire(dev) && (ap->cbl == ATA_CBL_PATA_UNK || ap->cbl == ATA_CBL_PATA80))) { ata_dev_printk(dev, KERN_WARNING, diff --git a/include/linux/ata.h b/include/linux/ata.h index 304825b1c97..5c4e54a2a8d 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -537,6 +537,15 @@ static inline int ata_drive_40wire(const u16 *dev_id) return 1; } +static inline int ata_drive_40wire_relaxed(const u16 *dev_id) +{ + if (ata_id_is_sata(dev_id)) + return 0; /* SATA */ + if ((dev_id[93] & 0x2000) == 0x2000) + return 0; /* 80 wire */ + return 1; +} + static inline int atapi_cdb_len(const u16 *dev_id) { u16 tmp = dev_id[0] & 0x3; diff --git a/include/linux/libata.h b/include/linux/libata.h index 1e277852ba4..56a5673aeba 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -339,6 +339,7 @@ enum { ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ + ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ |