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Commit ede1e6f8 authored May 16, 2006 by HighPoint Linux Team Committed by James Bottomley Jun 10, 2006

[SCSI] hptiop: HighPoint RocketRAID 3xxx controller driver



HighPoint RocketRAID 3220/3320 series 8 channel PCI-X SATA RAID Host
Adapters.

Fixes from original submission:

Merge Andrew Morton's patches:
- Provide locking for global list
- Fix debug printks
- uninline function with multiple callsites
- coding style fixups
- remove unneeded casts of void*
- kfree(NULL) is legal
- Don't "succeed" if register_chrdev() failed - otherwise we'll later
  unregister a not-registered chrdev.
- Don't return from hptiop_do_ioctl() with the spinlock held.
- uninline __hpt_do_ioctl()

Update for Arjan van de Ven's comments:
- put all asm/ includes after the linux/ ones
- replace mdelay with msleep
- add pci posting flush
- do not set pci command reqister in map_pci_bar
- do not try merging sg elements in hptiop_buildsgl()
- remove unused outstandingcommands member from hba structure
- remove unimplemented hptiop_abort() handler
- remove typedef u32 hpt_id_t

Other updates:
- fix endianess

Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

parent cbd5f69b

Documentation/scsi/hptiop.txt

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Original line number	Diff line number	Diff line
		HIGHPOINT ROCKETRAID 3xxx RAID DRIVER (hptiop)

		Controller Register Map
		-------------------------

		The controller IOP is accessed via PCI BAR0.

		BAR0 offset Register
		0x10 Inbound Message Register 0
		0x14 Inbound Message Register 1
		0x18 Outbound Message Register 0
		0x1C Outbound Message Register 1
		0x20 Inbound Doorbell Register
		0x24 Inbound Interrupt Status Register
		0x28 Inbound Interrupt Mask Register
		0x30 Outbound Interrupt Status Register
		0x34 Outbound Interrupt Mask Register
		0x40 Inbound Queue Port
		0x44 Outbound Queue Port


		I/O Request Workflow
		----------------------

		All queued requests are handled via inbound/outbound queue port.
		A request packet can be allocated in either IOP or host memory.

		To send a request to the controller:

		- Get a free request packet by reading the inbound queue port or
		allocate a free request in host DMA coherent memory.

		The value returned from the inbound queue port is an offset
		relative to the IOP BAR0.

		Requests allocated in host memory must be aligned on 32-bytes boundary.

		- Fill the packet.

		- Post the packet to IOP by writing it to inbound queue. For requests
		allocated in IOP memory, write the offset to inbound queue port. For
		requests allocated in host memory, write (0x80000000\|(bus_addr>>5))
		to the inbound queue port.

		- The IOP process the request. When the request is completed, it
		will be put into outbound queue. An outbound interrupt will be
		generated.

		For requests allocated in IOP memory, the request offset is posted to
		outbound queue.

		For requests allocated in host memory, (0x80000000\|(bus_addr>>5))
		is posted to the outbound queue. If IOP_REQUEST_FLAG_OUTPUT_CONTEXT
		flag is set in the request, the low 32-bit context value will be
		posted instead.

		- The host read the outbound queue and complete the request.

		For requests allocated in IOP memory, the host driver free the request
		by writing it to the outbound queue.

		Non-queued requests (reset/flush etc) can be sent via inbound message
		register 0. An outbound message with the same value indicates the completion
		of an inbound message.


		User-level Interface
		---------------------

		The driver exposes following sysfs attributes:

		NAME R/W Description
		driver-version R driver version string
		firmware-version R firmware version string

		The driver registers char device "hptiop" to communicate with HighPoint RAID
		management software. Its ioctl routine acts as a general binary interface
		between the IOP firmware and HighPoint RAID management software. New management
		functions can be implemented in application/firmware without modification
		in driver code.


		-----------------------------------------------------------------------------
		Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.

		This file 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.

		linux@highpoint-tech.com
		http://www.highpoint-tech.com

MAINTAINERS

+6 −0

Original line number	Diff line number	Diff line
		@@ -1117,6 +1117,12 @@ L: linux-hams@vger.kernel.org
		W: http://www.nt.tuwien.ac.at/~kkudielk/Linux/
		S: Maintained

		HIGHPOINT ROCKETRAID 3xxx RAID DRIVER
		P: HighPoint Linux Team
		M: linux@highpoint-tech.com
		W: http://www.highpoint-tech.com
		S: Supported

		HIPPI
		P: Jes Sorensen
		M: jes@trained-monkey.org

drivers/scsi/Kconfig

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Original line number	Diff line number	Diff line
		@@ -530,6 +530,16 @@ config SCSI_PDC_ADMA

		If unsure, say N.

		config SCSI_HPTIOP
		tristate "HighPoint RocketRAID 3xxx Controller support"
		depends on SCSI && PCI
		help
		This option enables support for HighPoint RocketRAID 3xxx
		controllers.

		To compile this driver as a module, choose M here; the module
		will be called hptiop. If unsure, say N.

		config SCSI_SATA_QSTOR
		tristate "Pacific Digital SATA QStor support"
		depends on SCSI_SATA && PCI

drivers/scsi/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -136,6 +136,7 @@ obj-$(CONFIG_SCSI_SATA_NV) += libata.o sata_nv.o
		obj-$(CONFIG_SCSI_SATA_ULI) += libata.o sata_uli.o
		obj-$(CONFIG_SCSI_SATA_MV) += libata.o sata_mv.o
		obj-$(CONFIG_SCSI_PDC_ADMA) += libata.o pdc_adma.o
		obj-$(CONFIG_SCSI_HPTIOP) += hptiop.o

		obj-$(CONFIG_ARM) += arm/

drivers/scsi/hptiop.c

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File added.

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