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31
0
0
0
15
14
13
R
0
0
0
5.8 Shared Memory
5-32
Register: 0x050
Host Index Register
Read/Write
0
0
0
0
0
0
0
0
The
Host Index Register
(AltReplyPost method) to enable Host resident reply post queues. The
Host Index provides an indication of which Reply Post MFA's the Host
has processed and is used to generate Reply Interrupts when the
AltReplyPost option is enabled.
R
Reserved
Reserved for future use.
HIVal
Host Index Value (Read/Write)
A region of Shared Memory (LSIFC929 local memory mapped to System
Addresses) is provided to allow the Host to write Request Message
Frames into. This is the default method (PUSH model) for Request
Message Frame transport, where the Host itself copies the Request
Message Frame into the LSIFC929 local memory. The total size of
Shared Memory is configured by the I/O Processor on reset. Supported
values are 32 Kbytes, 64 Kbytes, 128 Kbytes (default), 256 Kbytes, and
512 Kbytes. Shared memory is accessible only through Mem0 space
starting at address 0x080.
Registers
Copyright © 2000, 2001 by LSI Logic Corporation. All rights reserved.
R
0
0
0
0
HIVal
0
0
0
0
is used with the Outbound Reply Option
0
0
0
0
0
0
0
0
[31:14]
16
0
0
0
[13:0]
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