[SCSI] mpt2sas v00.100.11.15

* This is new scsi lld device driver from LSI supporting the SAS 2.0
  standard. I have split patchs by filename.

* Here is list of new 6gb host controllers:

  LSI SAS2004
  LSI SAS2008
  LSI SAS2108
  LSI SAS2116

* Here are the changes in the 4th posting of this patch set:

(1) fix compile errors when SCSI_MPT2SAS_LOGGING is not enabled
(2) add mpt2sas to the SCSI Mid Layer Makefile
(3) append mpt2sas_ to the naming of all non-static functions
(4) fix oops for SMP_PASSTHRU
(5) doorbell algorithm imported changes from windows driver

* Here are the changes in the 3rd posting of this patch set:

(1) add readl following writel from the function that disables interrupts
(2) replace 0xFFFFFFFFFFFFFFFFULL with ~0ULL
(3) when calling pci_enable_msix, only pass one msix entry (instead of 15).
(4) remove the "current HW implementation uses..... " comment in the sources
(5) merged bug fix for SIGIO/POLLIN notifcation; reported by the storlib team.

* Here are the changes in the 2nd posting of this patch set:

(1) use little endian types in the mpi headers
(2) merged in bug fix's from inhouse drivers.

Signed-off-by: Eric Moore <eric.moore@lsi.com>
Tested-by: peter Bogdanovic <pbog@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/Kconfig

@@ -571,6 +571,7 @@ config SCSI_ARCMSR_AER
 	  To enable this function, choose Y here.
 
 source "drivers/scsi/megaraid/Kconfig.megaraid"
+source "drivers/scsi/mpt2sas/Kconfig"
 
 config SCSI_HPTIOP
 	tristate "HighPoint RocketRAID 3xxx/4xxx Controller support"

drivers/scsi/Makefile

@@ -99,6 +99,7 @@ obj-$(CONFIG_SCSI_DC390T)	+= tmscsim.o
 obj-$(CONFIG_MEGARAID_LEGACY)	+= megaraid.o
 obj-$(CONFIG_MEGARAID_NEWGEN)	+= megaraid/
 obj-$(CONFIG_MEGARAID_SAS)	+= megaraid/
+obj-$(CONFIG_SCSI_MPT2SAS)	+= mpt2sas/
 obj-$(CONFIG_SCSI_ACARD)	+= atp870u.o
 obj-$(CONFIG_SCSI_SUNESP)	+= esp_scsi.o	sun_esp.o
 obj-$(CONFIG_SCSI_GDTH)		+= gdth.o

drivers/scsi/mpt2sas/Kconfig

@@ -0,0 +1,66 @@
+#
+# Kernel configuration file for the MPT2SAS
+#
+# This code is based on drivers/scsi/mpt2sas/Kconfig
+# Copyright (C) 2007-2008  LSI Corporation
+#  (mailto:DL-MPTFusionLinux@lsi.com)
+
+# This program 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; either version 2
+# of the License, or (at your option) any later version.
+
+# This program 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.
+
+# NO WARRANTY
+# THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
+# CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
+# LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
+# MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
+# solely responsible for determining the appropriateness of using and
+# distributing the Program and assumes all risks associated with its
+# exercise of rights under this Agreement, including but not limited to
+# the risks and costs of program errors, damage to or loss of data,
+# programs or equipment, and unavailability or interruption of operations.
+
+# DISCLAIMER OF LIABILITY
+# NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+# TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+# USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
+# HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+# USA.
+
+config SCSI_MPT2SAS
+	tristate "LSI MPT Fusion SAS 2.0 Device Driver"
+	depends on PCI && SCSI
+	select SCSI_SAS_ATTRS
+	---help---
+	This driver supports PCI-Express SAS 6Gb/s Host Adapters.
+
+config SCSI_MPT2SAS_MAX_SGE
+	int "LSI MPT Fusion Max number of SG Entries (16 - 128)"
+	depends on PCI && SCSI && SCSI_MPT2SAS
+	default "128"
+	range 16 128
+	---help---
+	This option allows you to specify the maximum number of scatter-
+	gather entries per I/O. The driver default is 128, which matches
+	SAFE_PHYS_SEGMENTS.  However, it may decreased down to 16.
+	Decreasing this parameter will reduce memory requirements
+	on a per controller instance.
+
+config SCSI_MPT2SAS_LOGGING
+	bool "LSI MPT Fusion logging facility"
+	depends on PCI && SCSI && SCSI_MPT2SAS
+	---help---
+	This turns on a logging facility.

drivers/scsi/mpt2sas/Makefile

@@ -0,0 +1,7 @@
+# mpt2sas makefile
+obj-$(CONFIG_SCSI_MPT2SAS) += mpt2sas.o
+mpt2sas-y +=  mpt2sas_base.o        \
+		mpt2sas_config.o    \
+		mpt2sas_scsih.o     \
+		mpt2sas_transport.o \
+		mpt2sas_ctl.o