1 /*
2 * Copyright 1992-2003 by Alan Hourihane, North Wales, UK.
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of Alan Hourihane not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission. Alan Hourihane makes no representations
11 * about the suitability of this software for any purpose. It is provided
12 * "as is" without express or implied warranty.
13 *
14 * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20 * PERFORMANCE OF THIS SOFTWARE.
21 *
22 * Author: Alan Hourihane, alanh@fairlite.demon.co.uk
23 */
24
25 #ifdef HAVE_CONFIG_H
26 #include "config.h"
27 #endif
28
29 /* All drivers should typically include these */
30 #include "xf86.h"
31 #include "xf86_OSproc.h"
32
33 /* Drivers that need to access the PCI config space directly need this */
34 #include "xf86Pci.h"
35
36 #include "compiler.h"
37 #include "trident.h"
38 #include "trident_regs.h"
39
TVGA8900SetRead(ScreenPtr pScreen,int bank)40 int TVGA8900SetRead(ScreenPtr pScreen, int bank)
41 {
42 ScrnInfoPtr pScrn;
43 TRIDENTPtr pTrident;
44 pScrn = xf86ScreenToScrn(pScreen);
45 pTrident = TRIDENTPTR(pScrn);
46 OUTW(0x3c4, 0xC000 | (((bank & 0x3f) ^ 0x02)<<8)|0x0E);
47 return 0;
48 }
TGUISetRead(ScreenPtr pScreen,int bank)49 int TGUISetRead(ScreenPtr pScreen, int bank)
50 {
51 ScrnInfoPtr pScrn;
52 TRIDENTPtr pTrident;
53 pScrn = xf86ScreenToScrn(pScreen);
54 pTrident = TRIDENTPTR(pScrn);
55 OUTB(0x3d9, bank & 0xff);
56 return 0;
57 }
TVGA8900SetWrite(ScreenPtr pScreen,int bank)58 int TVGA8900SetWrite(ScreenPtr pScreen, int bank)
59 {
60 ScrnInfoPtr pScrn;
61 TRIDENTPtr pTrident;
62 pScrn = xf86ScreenToScrn(pScreen);
63 pTrident = TRIDENTPTR(pScrn);
64 OUTW(0x3c4, 0xC000 | (((bank & 0x3f) ^ 0x02)<<8)|0x0E);
65 return 0;
66 }
TGUISetWrite(ScreenPtr pScreen,int bank)67 int TGUISetWrite(ScreenPtr pScreen, int bank)
68 {
69 ScrnInfoPtr pScrn;
70 TRIDENTPtr pTrident;
71 pScrn = xf86ScreenToScrn(pScreen);
72 pTrident = TRIDENTPTR(pScrn);
73 OUTB(0x3d8, bank & 0xff);
74 return 0;
75 }
TVGA8900SetReadWrite(ScreenPtr pScreen,int bank)76 int TVGA8900SetReadWrite(ScreenPtr pScreen, int bank)
77 {
78 ScrnInfoPtr pScrn;
79 TRIDENTPtr pTrident;
80 pScrn = xf86ScreenToScrn(pScreen);
81 pTrident = TRIDENTPTR(pScrn);
82 OUTW(0x3c4, 0xC000 | (((bank & 0x3f) ^ 0x02)<<8)|0x0E);
83 return 0;
84 }
TGUISetReadWrite(ScreenPtr pScreen,int bank)85 int TGUISetReadWrite(ScreenPtr pScreen, int bank)
86 {
87 ScrnInfoPtr pScrn;
88 TRIDENTPtr pTrident;
89 pScrn = xf86ScreenToScrn(pScreen);
90 pTrident = TRIDENTPTR(pScrn);
91 OUTB(0x3d8, bank & 0xff);
92 OUTB(0x3d9, bank & 0xff);
93 return 0;
94 }
95