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-rw-r--r--Documentation/scsi/hptiop.txt30
1 files changed, 21 insertions, 9 deletions
diff --git a/Documentation/scsi/hptiop.txt b/Documentation/scsi/hptiop.txt
index d28a31247d4..a6eb4add1be 100644
--- a/Documentation/scsi/hptiop.txt
+++ b/Documentation/scsi/hptiop.txt
@@ -1,9 +1,9 @@
-HIGHPOINT ROCKETRAID 3xxx RAID DRIVER (hptiop)
+HIGHPOINT ROCKETRAID 3xxx/4xxx ADAPTER DRIVER (hptiop)
Controller Register Map
-------------------------
-The controller IOP is accessed via PCI BAR0.
+For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
BAR0 offset Register
0x10 Inbound Message Register 0
@@ -18,6 +18,24 @@ The controller IOP is accessed via PCI BAR0.
0x40 Inbound Queue Port
0x44 Outbound Queue Port
+For Marvell IOP based adapters, the IOP is accessed via PCI BAR0 and BAR1:
+
+ BAR0 offset Register
+ 0x20400 Inbound Doorbell Register
+ 0x20404 Inbound Interrupt Mask Register
+ 0x20408 Outbound Doorbell Register
+ 0x2040C Outbound Interrupt Mask Register
+
+ BAR1 offset Register
+ 0x0 Inbound Queue Head Pointer
+ 0x4 Inbound Queue Tail Pointer
+ 0x8 Outbound Queue Head Pointer
+ 0xC Outbound Queue Tail Pointer
+ 0x10 Inbound Message Register
+ 0x14 Outbound Message Register
+ 0x40-0x1040 Inbound Queue
+ 0x1040-0x2040 Outbound Queue
+
I/O Request Workflow
----------------------
@@ -73,15 +91,9 @@ The driver exposes following sysfs attributes:
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.
+Copyright (C) 2006-2007 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