ref: 485a3301e6119f0c85d7869d469fc0a0888e49c1
dir: /sys/src/cmd/aux/vga/hiqvideo.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include "pci.h"
#include "vga.h"
/*
* Chips and Technologies HiQVideo.
* Extensions in the 69000 over the 65550 are not fully taken into account.
* Depths other than 8 are too slow.
*/
enum {
Frx = 0x3D0, /* Flat Panel Extensions Index */
Mrx = 0x3D2, /* Multimedia Extensions Index */
Xrx = 0x3D6, /* Configuration Extensions Index */
};
typedef struct {
Pcidev* pci;
uchar fr[256];
uchar mr[256];
uchar xr[256];
} HiQVideo;
static uchar
hiqvideoxi(long port, uchar index)
{
uchar data;
outportb(port, index);
data = inportb(port+1);
return data;
}
static void
hiqvideoxo(long port, uchar index, uchar data)
{
outportb(port, index);
outportb(port+1, data);
}
static void
snarf(Vga* vga, Ctlr* ctlr)
{
int i;
Pcidev *p;
HiQVideo *hqv;
if(vga->private == nil){
vga->private = alloc(sizeof(HiQVideo));
hqv = vga->private;
p = vga->pci;
if(p == nil)
p = pcimatch(nil, 0x102C, 0);
if(p == nil || p->vid != 0x102C)
error("%s: not found\n", ctlr->name);
switch(p->did){
case 0x00C0: /* 69000 HiQVideo */
vga->f[1] = 135000000;
vga->vmz = 2048*1024;
break;
case 0x00E0: /* 65550 HiQV32 */
case 0x00E4: /* 65554 HiQV32 */
case 0x00E5: /* 65555 HiQV32 */
vga->f[1] = 90000000;
vga->vmz = 2048*1024;
break;
default:
error("%s: DID %4.4uX unsupported\n",
ctlr->name, p->did);
}
hqv->pci = p;
}
hqv = vga->private;
for(i = 0; i < 0x50; i++)
hqv->fr[i] = hiqvideoxi(Frx, i);
for(i = 0; i < 0x60; i++)
hqv->mr[i] = hiqvideoxi(Mrx, i);
for(i = 0x30; i < 0x80; i++)
vga->crt[i] = vgaxi(Crtx, i);
for(i = 0; i < 0x100; i++)
hqv->xr[i] = hiqvideoxi(Xrx, i);
switch(hqv->pci->did){
case 0x00C0: /* 69000 HiQVideo */
vga->f[1] = 135000000;
vga->vmz = 2048*1024;
break;
case 0x00E0: /* 65550 HiQV32 */
case 0x00E4: /* 65554 HiQV32 */
case 0x00E5: /* 65555 HiQV32 */
/*
* Check VCC to determine max clock.
* 5V allows a higher rate.
*/
if(hqv->fr[0x0A] & 0x02)
vga->f[1] = 110000000;
else
vga->f[1] = 80000000;
switch((hqv->xr[0x43]>>1) & 0x03){
case 0:
vga->vmz = 1*1024*1024;
break;
case 1:
vga->vmz = 2*1024*1024;
break;
default:
vga->vmz = 16*1024*1024;
break;
}
break;
}
ctlr->flag |= Fsnarf;
}
static void
options(Vga*, Ctlr* ctlr)
{
ctlr->flag |= Hlinear|Foptions;
}
static void
clock(Vga* vga, Ctlr* ctlr)
{
double f, fmin, fvco, m;
ulong n, nmin, nmax, pd, rd;
/*
* Constraints:
* 1. 1MHz <= Fref <= 60MHz
* 2. 150KHz <= Fref/(RD*N) <= 2MHz
* 3. 48MHz < Fvco <= 220MHz
* 4. 3 <= M <= 1023
* 5. 3 <= N <= 1023
*/
f = vga->f[0];
/*
* Although pd = 0 is valid, things seems more stable
* starting at 1.
*/
for(pd = 1; pd < 6; pd++){
f = vga->f[0]*(1<<pd);
if(f > 48000000 && f <= 220000000)
break;
}
if(pd >= 6)
error("%s: dclk %lud out of range\n", ctlr->name, vga->f[0]);
vga->p[0] = pd;
/*
* The reference divisor has only two possible values, 1 and 4.
*/
fmin = f;
for(rd = 1; rd <= 4; rd += 3){
/*
* Find the range for n (constraint 2).
*/
for(nmin = 3; nmin <= 1023; nmin++){
if(RefFreq/(rd*nmin) <= 2000000)
break;
}
for(nmax = 1023; nmax >= 3; nmax--){
if(RefFreq/(rd*nmax) >= 150000)
break;
}
/*
* Now find the closest match for M and N.
*/
for(n = nmin; n < nmax; n++){
for(m = 3; m <= vga->m[1]; m++){
fvco = (RefFreq*4*m)/(rd*n);
if(fvco < 48000000 || fvco > 220000000)
continue;
fvco -= f;
if(fvco < 0)
fvco = -fvco;
if(fvco < fmin){
fmin = fvco;
vga->m[0] = m;
vga->n[0] = n;
vga->p[0] = pd;
vga->r[0] = rd;
}
}
}
}
}
static void
init(Vga* vga, Ctlr* ctlr)
{
HiQVideo *hqv;
hqv = vga->private;
if(vga->f[0] == 0)
vga->f[0] = vga->mode->frequency;
vga->misc &= ~0x0C;
hqv->fr[0x03] &= ~0x0C;
switch(vga->mode->z){
case 8:
case 16:
case 32:
break;
default:
error("depth %d not supported\n", vga->mode->z);
}
/*
* FR[0x01] == 1 for CRT, 2 for LCD.
* Don't programme the clock if it's an LCD.
*/
if((hqv->fr[0x01] & 0x03) == 0x02){
vga->misc |= 0x08;
hqv->fr[0x03] |= 0x08;
}
else{
/*
* Clock bits. If the desired video clock is
* one of the two standard VGA clocks it can just be
* set using bits <3:2> of vga->misc or Fr03,
* otherwise the DCLK PLL needs to be programmed.
*/
if(vga->f[0] == VgaFreq0){
/* nothing to do */;
}
else if(vga->f[0] == VgaFreq1){
vga->misc |= 0x04;
hqv->fr[0x03] |= 0x04;
}
else{
if(vga->f[0] > vga->f[1])
error("%s: invalid dclk - %lud\n",
ctlr->name, vga->f[0]);
if((hqv->fr[0x01] & 0x03) != 0x02){
vga->m[1] = 1023;
clock(vga, ctlr);
hqv->xr[0xC8] = (vga->m[0]-2) & 0xFF;
hqv->xr[0xCA] = ((vga->m[0]-2) & 0x300)>>8;
hqv->xr[0xC9] = (vga->n[0]-2) & 0xFF;
hqv->xr[0xCA] |= ((vga->n[0]-2) & 0x300)>>4;
hqv->xr[0xCB] = (vga->p[0]<<4)|(vga->r[0] == 1);
}
vga->misc |= 0x08;
hqv->fr[0x03] |= 0x08;
}
}
if(vga->mode->y >= 480)
vga->misc &= ~0xC0;
/*
* 10 bits should be enough, but set the extended mode anyway.
*/
hqv->xr[0x09] |= 0x01;
vga->crt[0x30] = ((vga->mode->vt-2)>>8) & 0x0F;
vga->crt[0x31] = ((vga->mode->y-1)>>8) & 0x0F;
vga->crt[0x32] = (vga->mode->vrs>>8) & 0x0F;
vga->crt[0x33] = (vga->mode->vrs>>8) & 0x0F;
vga->crt[0x38] = (((vga->mode->ht>>3)-5)>>8) & 0x01;
vga->crt[0x3C] = (vga->mode->ehb>>3) & 0xC0;
vga->crt[0x41] = (vga->crt[0x13]>>8) & 0x0F;
vga->crt[0x40] = 0x80;
hqv->xr[0x40] |= 0x03;
hqv->xr[0x80] |= 0x10;
hqv->xr[0x81] &= ~0x0F;
switch(vga->mode->z){
case 8:
hqv->xr[0x81] |= 0x12;
break;
case 16:
hqv->xr[0x81] |= 0x15;
break;
case 32:
hqv->xr[0x81] |= 0x16;
break;
}
hqv->xr[0x0A] = 0x01;
if(vga->linear && (ctlr->flag & Hlinear))
ctlr->flag |= Ulinear;
vga->attribute[0x11] = 0;
ctlr->flag |= Finit;
}
static void
load(Vga* vga, Ctlr* ctlr)
{
HiQVideo *hqv;
hqv = vga->private;
hiqvideoxo(Xrx, 0x0E, 0x00);
while((vgai(Status1) & 0x08) == 0x08)
;
while((vgai(Status1) & 0x08) == 0)
;
vgaxo(Seqx, 0x07, 0x00);
/*
* Set the clock if necessary.
*/
if((vga->misc & 0x0C) == 0x08 && (hqv->fr[0x01] & 0x03) != 0x02){
vgao(MiscW, vga->misc & ~0x0C);
hiqvideoxo(Frx, 0x03, hqv->fr[0x03] & ~0x0C);
hiqvideoxo(Xrx, 0xC8, hqv->xr[0xC8]);
hiqvideoxo(Xrx, 0xC9, hqv->xr[0xC9]);
hiqvideoxo(Xrx, 0xCA, hqv->xr[0xCA]);
hiqvideoxo(Xrx, 0xCB, hqv->xr[0xCB]);
}
hiqvideoxo(Frx, 0x03, hqv->fr[0x03]);
vgao(MiscW, vga->misc);
hiqvideoxo(Xrx, 0x09, hqv->xr[0x09]);
vgaxo(Crtx, 0x30, vga->crt[0x30]);
vgaxo(Crtx, 0x31, vga->crt[0x31]);
vgaxo(Crtx, 0x32, vga->crt[0x32]);
vgaxo(Crtx, 0x33, vga->crt[0x33]);
vgaxo(Crtx, 0x38, vga->crt[0x38]);
vgaxo(Crtx, 0x3C, vga->crt[0x3C]);
vgaxo(Crtx, 0x41, vga->crt[0x41]);
vgaxo(Crtx, 0x40, vga->crt[0x40]);
hiqvideoxo(Xrx, 0x40, hqv->xr[0x40]);
hiqvideoxo(Xrx, 0x80, hqv->xr[0x80]);
hiqvideoxo(Xrx, 0x81, hqv->xr[0x81]);
if(ctlr->flag & Ulinear){
hqv->xr[0x05] = vga->vmb>>16;
hqv->xr[0x06] = vga->vmb>>24;
hiqvideoxo(Xrx, 0x05, hqv->xr[0x05]);
hiqvideoxo(Xrx, 0x06, hqv->xr[0x06]);
hqv->xr[0x0A] = 0x02;
}
hiqvideoxo(Xrx, 0x0A, hqv->xr[0x0A]);
ctlr->flag |= Fload;
}
static ulong
dumpmclk(uchar data[4])
{
double f, m, n;
int pds, rds;
m = data[0] & 0x7F;
n = data[1] & 0x7F;
pds = 1<<((data[2] & 0x70)>>4);
if(data[2] & 0x01)
rds = 1;
else
rds = 4;
f = (RefFreq*4*(m+2))/(rds*(n+2));
f /= pds;
return f;
}
static ulong
dumpvclk(uchar data[4])
{
double f, m, n;
int pds, rds;
m = ((data[2] & 0x03)<<8)|data[0];
n = (((data[2] & 0x30)>>4)<<8)|data[1];
pds = 1<<((data[3] & 0x70)>>4);
if(data[3] & 0x01)
rds = 1;
else
rds = 4;
f = (RefFreq*4*(m+2))/(rds*(n+2));
f /= pds;
return f;
}
static void
dump(Vga* vga, Ctlr* ctlr)
{
int i;
char *name;
HiQVideo *hqv;
name = ctlr->name;
hqv = vga->private;
printitem(name, "Fr00");
for(i = 0; i < 0x50; i++)
printreg(hqv->fr[i]);
printitem(name, "Mr00");
for(i = 0; i < 0x60; i++)
printreg(hqv->mr[i]);
printitem(name, "Crt30");
for(i = 0x30; i < 0x80; i++)
printreg(vga->crt[i]);
printitem(name, "Xr00");
for(i = 0; i < 0x100; i++)
printreg(hqv->xr[i]);
printitem(ctlr->name, "CLK0");
for(i = 0; i < 4; i++)
printreg(hqv->xr[0xC0+i]);
Bprint(&stdout, "%23ld", dumpvclk(&hqv->xr[0xC0]));
printitem(ctlr->name, "CLK1");
for(i = 0; i < 4; i++)
printreg(hqv->xr[0xC4+i]);
Bprint(&stdout, "%23ld", dumpvclk(&hqv->xr[0xC4]));
printitem(ctlr->name, "CLK2");
for(i = 0; i < 4; i++)
printreg(hqv->xr[0xC8+i]);
Bprint(&stdout, "%23ld", dumpvclk(&hqv->xr[0xC8]));
printitem(ctlr->name, "MCLK");
for(i = 0; i < 4; i++)
printreg(hqv->xr[0xCC+i]);
Bprint(&stdout, "%23ld", dumpmclk(&hqv->xr[0xCC]));
printitem(ctlr->name, "m n pd rd");
Bprint(&stdout, "%9ld %8ld - %8ld %8ld\n",
vga->m[0], vga->n[0], vga->p[0], vga->r[0]);
}
Ctlr hiqvideo = {
"hiqvideo", /* name */
snarf, /* snarf */
options, /* options */
init, /* init */
load, /* load */
dump, /* dump */
};
Ctlr hiqvideohwgc = {
"hiqvideohwgc", /* name */
0, /* snarf */
0, /* options */
0, /* init */
0, /* load */
0, /* dump */
};