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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 d28a31247d4c..a6eb4add1be6 100644
--- a/Documentation/scsi/hptiop.txt
+++ b/Documentation/scsi/hptiop.txt
@@ -1,9 +1,9 @@
1HIGHPOINT ROCKETRAID 3xxx RAID DRIVER (hptiop) 1HIGHPOINT ROCKETRAID 3xxx/4xxx ADAPTER DRIVER (hptiop)
2 2
3Controller Register Map 3Controller Register Map
4------------------------- 4-------------------------
5 5
6The controller IOP is accessed via PCI BAR0. 6For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
7 7
8 BAR0 offset Register 8 BAR0 offset Register
9 0x10 Inbound Message Register 0 9 0x10 Inbound Message Register 0
@@ -18,6 +18,24 @@ The controller IOP is accessed via PCI BAR0.
18 0x40 Inbound Queue Port 18 0x40 Inbound Queue Port
19 0x44 Outbound Queue Port 19 0x44 Outbound Queue Port
20 20
21For Marvell IOP based adapters, the IOP is accessed via PCI BAR0 and BAR1:
22
23 BAR0 offset Register
24 0x20400 Inbound Doorbell Register
25 0x20404 Inbound Interrupt Mask Register
26 0x20408 Outbound Doorbell Register
27 0x2040C Outbound Interrupt Mask Register
28
29 BAR1 offset Register
30 0x0 Inbound Queue Head Pointer
31 0x4 Inbound Queue Tail Pointer
32 0x8 Outbound Queue Head Pointer
33 0xC Outbound Queue Tail Pointer
34 0x10 Inbound Message Register
35 0x14 Outbound Message Register
36 0x40-0x1040 Inbound Queue
37 0x1040-0x2040 Outbound Queue
38
21 39
22I/O Request Workflow 40I/O Request Workflow
23---------------------- 41----------------------
@@ -73,15 +91,9 @@ The driver exposes following sysfs attributes:
73 driver-version R driver version string 91 driver-version R driver version string
74 firmware-version R firmware version string 92 firmware-version R firmware version string
75 93
76The driver registers char device "hptiop" to communicate with HighPoint RAID
77management software. Its ioctl routine acts as a general binary interface
78between the IOP firmware and HighPoint RAID management software. New management
79functions can be implemented in application/firmware without modification
80in driver code.
81
82 94
83----------------------------------------------------------------------------- 95-----------------------------------------------------------------------------
84Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved. 96Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
85 97
86 This file is distributed in the hope that it will be useful, 98 This file is distributed in the hope that it will be useful,
87 but WITHOUT ANY WARRANTY; without even the implied warranty of 99 but WITHOUT ANY WARRANTY; without even the implied warranty of