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-rw-r--r--Documentation/scsi/hptiop.txt21
1 files changed, 20 insertions, 1 deletions
diff --git a/Documentation/scsi/hptiop.txt b/Documentation/scsi/hptiop.txt
index a6eb4add1be..9605179711f 100644
--- a/Documentation/scsi/hptiop.txt
+++ b/Documentation/scsi/hptiop.txt
@@ -3,6 +3,25 @@ HIGHPOINT ROCKETRAID 3xxx/4xxx ADAPTER DRIVER (hptiop)
Controller Register Map
-------------------------
+For RR44xx Intel IOP based adapters, the controller IOP is accessed via PCI BAR0 and BAR2:
+
+ BAR0 offset Register
+ 0x11C5C Link Interface IRQ Set
+ 0x11C60 Link Interface IRQ Clear
+
+ BAR2 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
+
For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
BAR0 offset Register
@@ -93,7 +112,7 @@ The driver exposes following sysfs attributes:
-----------------------------------------------------------------------------
-Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
+Copyright (C) 2006-2009 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