Subversion Repositories planix.SVN

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include <u.h>
2 
#include <libc.h>
3 
#include <bio.h>
4 
 
5 
#include "pci.h"
6 
#include "vga.h"
7 
 
8 
/*
9 
 * S3 86C80[15] GUI Accelerator.
10 
 */
11 
static void
12 
snarf(Vga* vga, Ctlr* ctlr)
13 
{
14 
	s3generic.snarf(vga, ctlr);
15 
}
16 
 
17 
static void
18 
options(Vga*, Ctlr* ctlr)
19 
{
20 
	ctlr->flag |= Henhanced|Foptions;
21 
}
22 
 
23 
static void
24 
init(Vga* vga, Ctlr* ctlr)
25 
{
26 
	ulong x;
27 
 
28 
	s3generic.init(vga, ctlr);
29 
	vga->crt[0x3B] = vga->crt[0]-5;
30 
 
31 
	if(vga->mode->z > 8)
32 
		error("depth %d not supported\n", vga->mode->z);
33 
 
34 
	/*
35 
	 * Display memory access control.
36 
	 * Calculation of the M-parameter (Crt54) is
37 
	 * memory-system and dot-clock dependent, the
38 
	 * values below are guesses from dumping
39 
	 * registers.
40 
	 */
41 
	vga->crt[0x60] = 0xFF;
42 
	x = (vga->mode->x)/4;
43 
	vga->crt[0x61] = 0x80|((x>>8) & 0x07);
44 
	vga->crt[0x62] = (x & 0xFF);
45 
 
46 
	if(vga->mode->x <= 800)
47 
		vga->crt[0x54] = 0x88;
48 
	else if(vga->mode->x <= 1024)
49 
		vga->crt[0x54] = 0xF8;
50 
	else
51 
		vga->crt[0x54] = 0x40;
52 
}
53 
 
54 
static void
55 
load(Vga* vga, Ctlr* ctlr)
56 
{
57 
	ushort advfunc;
58 
 
59 
	s3generic.load(vga, ctlr);
60 
	vgaxo(Crtx, 0x60, vga->crt[0x60]);
61 
	vgaxo(Crtx, 0x61, vga->crt[0x61]);
62 
	vgaxo(Crtx, 0x62, vga->crt[0x62]);
63 
 
64 
	advfunc = 0x0000;
65 
	if(ctlr->flag & Uenhanced){
66 
		if(vga->mode->x == 1024 || vga->mode->x == 800)
67 
			advfunc = 0x0057;
68 
		else
69 
			advfunc = 0x0053;
70 
	}
71 
	outportw(0x4AE8, advfunc);
72 
}
73 
 
74 
static void
75 
dump(Vga* vga, Ctlr* ctlr)
76 
{
77 
	s3generic.dump(vga, ctlr);
78 
}
79 
 
80 
Ctlr s3801 = {
81 
	"s3801",			/* name */
82 
	snarf,				/* snarf */
83 
	options,			/* options */
84 
	init,				/* init */
85 
	load,				/* load */
86 
	dump,				/* dump */
87 
};
88 
 
89 
Ctlr s3805 = {
90 
	"s3805",			/* name */
91 
	snarf,				/* snarf */
92 
	options,			/* options */
93 
	init,				/* init */
94 
	load,				/* load */
95 
	dump,				/* dump */
96 
};