am53c974: add new driver

This patch adds a new implementation for the Tekram DC-390T /
AMD AM53c974 SCSI controller, based on the generic
esp_scsi infrastructure.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/Kconfig

@@ -1357,6 +1357,24 @@ config SCSI_DC390T
 	  To compile this driver as a module, choose M here: the
 	  module will be called tmscsim.
 
+config SCSI_AM53C974
+	tristate "Tekram DC390(T) and Am53/79C974 SCSI support (new driver)"
+	depends on PCI && SCSI
+	select SCSI_SPI_ATTRS
+	---help---
+	  This driver supports PCI SCSI host adapters based on the Am53C974A
+	  chip, e.g. Tekram DC390(T), DawiControl 2974 and some onboard
+	  PCscsi/PCnet (Am53/79C974) solutions.
+	  This is a new implementation base on the generic esp_scsi driver.
+
+	  Documentation can be found in <file:Documentation/scsi/tmscsim.txt>.
+
+	  Note that this driver does NOT support Tekram DC390W/U/F, which are
+	  based on NCR/Symbios chips. Use "NCR53C8XX SCSI support" for those.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called am53c974.
+
 config SCSI_T128
 	tristate "Trantor T128/T128F/T228 SCSI support"
 	depends on ISA && SCSI

drivers/scsi/Makefile

@@ -101,6 +101,7 @@ obj-$(CONFIG_SCSI_7000FASST)	+= wd7000.o
 obj-$(CONFIG_SCSI_EATA)		+= eata.o
 obj-$(CONFIG_SCSI_DC395x)	+= dc395x.o
 obj-$(CONFIG_SCSI_DC390T)	+= tmscsim.o
+obj-$(CONFIG_SCSI_AM53C974)	+= esp_scsi.o	am53c974.o
 obj-$(CONFIG_MEGARAID_LEGACY)	+= megaraid.o
 obj-$(CONFIG_MEGARAID_NEWGEN)	+= megaraid/
 obj-$(CONFIG_MEGARAID_SAS)	+= megaraid/