[SCSI] mvsas: add support for 94xx; layout change; bug fixes

This version contains following main changes
  - Switch to new layout to support more types of ASIC.
  - SSP TMF supported and related Error Handing enhanced.
  - Support flash feature with delay 2*HZ when PHY changed.
  - Support Marvell 94xx series ASIC for 6G SAS/SATA, which has 2
88SE64xx chips but any different register description.
  - Support SPI flash for HBA-related configuration info.
  - Other patch enhanced from kernel side such as increasing PHY type

[jejb: fold back in DMA_BIT_MASK changes]
Signed-off-by: Ying Chu <jasonchu@marvell.com>
Signed-off-by: Andy Yan <ayan@marvell.com>
Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/mvsas/Kconfig

@@ -1,35 +1,42 @@
 #
-# Kernel configuration file for 88SE64XX SAS/SATA driver.
+# Kernel configuration file for 88SE64XX/88SE94XX SAS/SATA driver.
 #
 # Copyright 2007 Red Hat, Inc.
 # Copyright 2008 Marvell. <kewei@marvell.com>
 #
 # This file is licensed under GPLv2.
 #
-# This file is part of the 88SE64XX driver.
+# This file is part of the 88SE64XX/88SE94XX driver.
 #
-# The 88SE64XX driver is free software; you can redistribute
+# The 88SE64XX/88SE94XX driver is free software; you can redistribute
 # it and/or modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; version 2 of the
 # License.
 #
-# The 88SE64XX driver is distributed in the hope that it will be
+# The 88SE64XX/88SE94XX driver is distributed in the hope that it will be
 # useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with 88SE64XX Driver; if not, write to the Free Software
+# along with 88SE64XX/88SE94XX Driver; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #
 #
 
 config SCSI_MVSAS
-	tristate "Marvell 88SE64XX SAS/SATA support"
+	tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support"
 	depends on PCI
 	select SCSI_SAS_LIBSAS
 	select FW_LOADER
 	help
-		This driver supports Marvell's SAS/SATA 3Gb/s PCI-E 88SE64XX
-		chip based host adapters.
+		This driver supports Marvell's SAS/SATA 3Gb/s PCI-E 88SE64XX and 6Gb/s
+		PCI-E 88SE94XX chip based host adapters.
 
+config SCSI_MVSAS_DEBUG
+	bool "Compile in debug mode"
+	default y
+	depends on SCSI_MVSAS
+	help
+		Compiles the 88SE64XX/88SE94XX driver in debug mode.  In debug mode,
+		the driver prints some messages to the console.

drivers/scsi/mvsas/Makefile

@@ -1,5 +1,5 @@
 #
-# Makefile for Marvell 88SE64xx SAS/SATA driver.
+# Makefile for Marvell 88SE64xx/88SE84xx SAS/SATA driver.
 #
 # Copyright 2007 Red Hat, Inc.
 # Copyright 2008 Marvell. <kewei@marvell.com>
@@ -21,7 +21,12 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 # USA
 
+ifeq ($(CONFIG_SCSI_MVSAS_DEBUG),y)
+	EXTRA_CFLAGS += -DMV_DEBUG
+endif
+
 obj-$(CONFIG_SCSI_MVSAS) += mvsas.o
 mvsas-y +=  mv_init.o  \
            mv_sas.o   \
-           mv_64xx.o
+           mv_64xx.o  \
+           mv_94xx.o