AMD-761 Datasheet, PDF (158/264 Pages) Advanced Micro Devices – AMD-761-TM System Controller Software/BIOS Design Guide

Preliminary Information
AMD-761™ System Controller Software/BIOS Design Guide
24081D—February 2002
GART Cache Control
Bar1 + 0x0C
31
30
29
28
27
26
25
24
Bit
Reserved
Reset
0
0
0
0
0
0
0
0
R/W
R
23
22
21
20
19
18
17
16
Bit
Reserved
Reset
0
0
0
0
0
0
0
0
R/W
R
15
14
13
12
11
10
9
8
Bit
Reserved
Reset
0
0
0
0
0
0
0
0
R/W
R
7
6
5
4
3
2
1
0
Bit
Reserved
GART_Cache
_Inval
Reset
0
0
0
1
0
0
0
0
R/W
R
R/W1S
Register Description
Bit Definitions
Bit Name
31–1 Reserved
0 GART_Cache
_Inval
Programming Notes
GART Cache Control (Bar1 + 0x0C)
Function
Reserved
GART Cache Invalidate
This bit is written by the AMD-761™ miniport driver. When set to 1, the AMD-761 system
controller invalidates the entire GART directory and table cache. When the invalidate
operation is completed, the AMD-761 system controller resets this bit to 0.
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AMD-761™ System Controller Programmer’s Interface
Chapter 2