[libata] mark certain hardware (or drivers) with a no-atapi flag
Some hardware does not support the PACKET command at all.
Other hardware supports ATAPI, but the driver does something nasty such
as calling BUG() when an ATAPI command is issued.
For these such cases, we mark them with a new flag, ATA_FLAG_NO_ATAPI.
Initial version contributed by Ben Collins.
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 379e870..72ddba9 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2173,9 +2173,12 @@
if (unlikely(!ata_dev_present(dev)))
return NULL;
- if (!atapi_enabled) {
- if (unlikely(dev->class == ATA_DEV_ATAPI))
+ if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) {
+ if (unlikely(dev->class == ATA_DEV_ATAPI)) {
+ printk(KERN_WARNING "ata%u(%u): WARNING: ATAPI is %s, device ignored.\n",
+ ap->id, dev->devno, atapi_enabled ? "not supported with this driver" : "disabled");
return NULL;
+ }
}
return dev;
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index ab7432a..9321cdf 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -86,7 +86,8 @@
MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
MV_COMMON_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO),
+ ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
+ ATA_FLAG_NO_ATAPI),
MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
CRQB_FLAG_READ = (1 << 0),
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index 8a8e3e3..2691625 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -70,6 +70,9 @@
PDC_HAS_PATA = (1 << 1), /* PDC20375 has PATA */
PDC_RESET = (1 << 11), /* HDMA reset */
+
+ PDC_COMMON_FLAGS = ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST |
+ ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI,
};
@@ -162,8 +165,7 @@
/* board_2037x */
{
.sht = &pdc_ata_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SRST | ATA_FLAG_MMIO,
+ .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
@@ -173,8 +175,7 @@
/* board_20319 */
{
.sht = &pdc_ata_sht,
- .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SRST | ATA_FLAG_MMIO,
+ .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
@@ -184,8 +185,7 @@
/* board_20619 */
{
.sht = &pdc_ata_sht,
- .host_flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST |
- ATA_FLAG_MMIO | ATA_FLAG_SLAVE_POSS,
+ .host_flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index dcc3ad9..ac7b0d8 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -220,7 +220,8 @@
{
.sht = &pdc_sata_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
- ATA_FLAG_SRST | ATA_FLAG_MMIO,
+ ATA_FLAG_SRST | ATA_FLAG_MMIO |
+ ATA_FLAG_NO_ATAPI,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 ; FIXME */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index f2dbb68..41ea7db 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -122,6 +122,7 @@
ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once
* proper HSM is in place. */
ATA_FLAG_DEBUGMSG = (1 << 10),
+ ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */
