1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/tseng/tseng_bank.c,v 1.4 2000/08/08 08:58:06 eich Exp $ */
#include "tseng.h"
/*
* Tseng really screwed up when they decided to combine the read and write
* bank selectors into one register. Now we need to cache the bank
* registers, because IO reads are too expensive.
*/
int
ET4000W32SetRead(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (pTseng->cache_SegSelL & 0x0f) | (iBank << 4);
pTseng->cache_SegSelH = (pTseng->cache_SegSelH & 0x03) | (iBank & 0x30);
outb(0x3CB, pTseng->cache_SegSelH);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
int
ET4000W32SetWrite(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (pTseng->cache_SegSelL & 0xf0) | (iBank & 0x0f);
pTseng->cache_SegSelH = (pTseng->cache_SegSelH & 0x30) | (iBank >> 4);
outb(0x3CB, pTseng->cache_SegSelH);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
int
ET4000W32SetReadWrite(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (iBank & 0x0f) | (iBank << 4);
pTseng->cache_SegSelH = (iBank & 0x30) | (iBank >> 4);
outb(0x3CB, pTseng->cache_SegSelH);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
int
ET4000SetRead(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (pTseng->cache_SegSelL & 0x0f) | (iBank << 4);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
int
ET4000SetWrite(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (pTseng->cache_SegSelL & 0xf0) | (iBank & 0x0f);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
int
ET4000SetReadWrite(ScreenPtr pScreen, unsigned int iBank)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
TsengPtr pTseng = TsengPTR(pScrn);
pTseng->cache_SegSelL = (iBank & 0x0f) | (iBank << 4);
outb(0x3CD, pTseng->cache_SegSelL);
return 0;
}
|
