[PATCH] sata_qstor: new basic driver for Pacific Digital

This is a new basic libata SATA driver
for the Pacific Digital QStor SATA/RAID card.

It features ordinary per-drive SATA with single-request DMA
for R/W commands, and PIO for everything else.

It currently does not implement any of the hardware RAID support,
nor hot-plug, nor the tagged/native command-queuing features.

On the other hand, it is small and simple as a result.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/scsi/Kconfig

@@ -457,6 +457,14 @@ config SCSI_SATA_PROMISE
 
 	  If unsure, say N.
 
+config SCSI_SATA_QSTOR
+	tristate "Pacific Digital SATA QStor support"
+	depends on SCSI_SATA && PCI
+	help
+	  This option enables support for Pacific Digital Serial ATA QStor.
+
+	  If unsure, say N.
+
 config SCSI_SATA_SX4
 	tristate "Promise SATA SX4 support"
 	depends on SCSI_SATA && PCI && EXPERIMENTAL

drivers/scsi/Makefile

@@ -125,6 +125,7 @@ obj-$(CONFIG_SCSI_SATA_AHCI)	+= libata.o ahci.o
 obj-$(CONFIG_SCSI_SATA_SVW)	+= libata.o sata_svw.o
 obj-$(CONFIG_SCSI_ATA_PIIX)	+= libata.o ata_piix.o
 obj-$(CONFIG_SCSI_SATA_PROMISE)	+= libata.o sata_promise.o
+obj-$(CONFIG_SCSI_SATA_QSTOR)	+= libata.o sata_qstor.o
 obj-$(CONFIG_SCSI_SATA_SIL)	+= libata.o sata_sil.o
 obj-$(CONFIG_SCSI_SATA_VIA)	+= libata.o sata_via.o
 obj-$(CONFIG_SCSI_SATA_VITESSE)	+= libata.o sata_vsc.o