// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
*
* (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
*
* Portions Copyright (c) 2001 Matrox Graphics Inc.
*
* Version: 1.65 2002/08/14
*
* MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
*
* Contributors: "menion?" <menion@mindless.com>
* Betatesting, fixes, ideas
*
* "Kurt Garloff" <garloff@suse.de>
* Betatesting, fixes, ideas, videomodes, videomodes timmings
*
* "Tom Rini" <trini@kernel.crashing.org>
* MTRR stuff, PPC cleanups, betatesting, fixes, ideas
*
* "Bibek Sahu" <scorpio@dodds.net>
* Access device through readb|w|l and write b|w|l
* Extensive debugging stuff
*
* "Daniel Haun" <haund@usa.net>
* Testing, hardware cursor fixes
*
* "Scott Wood" <sawst46+@pitt.edu>
* Fixes
*
* "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
* Betatesting
*
* "Kelly French" <targon@hazmat.com>
* "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
* Betatesting, bug reporting
*
* "Pablo Bianucci" <pbian@pccp.com.ar>
* Fixes, ideas, betatesting
*
* "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
* Fixes, enhandcements, ideas, betatesting
*
* "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
* PPC betatesting, PPC support, backward compatibility
*
* "Paul Womar" <Paul@pwomar.demon.co.uk>
* "Owen Waller" <O.Waller@ee.qub.ac.uk>
* PPC betatesting
*
* "Thomas Pornin" <pornin@bolet.ens.fr>
* Alpha betatesting
*
* "Pieter van Leuven" <pvl@iae.nl>
* "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
* G100 testing
*
* "H. Peter Arvin" <hpa@transmeta.com>
* Ideas
*
* "Cort Dougan" <cort@cs.nmt.edu>
* CHRP fixes and PReP cleanup
*
* "Mark Vojkovich" <mvojkovi@ucsd.edu>
* G400 support
*
* "David C. Hansen" <haveblue@us.ibm.com>
* Fixes
*
* "Ian Romanick" <idr@us.ibm.com>
* Find PInS data in BIOS on PowerPC systems.
*
* (following author is not in any relation with this code, but his code
* is included in this driver)
*
* Based on framebuffer driver for VBE 2.0 compliant graphic boards
* (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
*
* (following author is not in any relation with this code, but his ideas
* were used when writing this driver)
*
* FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
*
*/
#include <linux/export.h>
#include "matroxfb_misc.h"
#include <linux/interrupt.h>
#include <linux/matroxfb.h>
void matroxfb_DAC_out(const struct matrox_fb_info *minfo, int reg, int val)
{
DBG_REG(__func__)
mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
mga_outb(M_RAMDAC_BASE+M_X_DATAREG, val);
}
int matroxfb_DAC_in(const struct matrox_fb_info *minfo, int reg)
{
DBG_REG(__func__)
mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
return mga_inb(M_RAMDAC_BASE+M_X_DATAREG);
}
void matroxfb_var2my(struct fb_var_screeninfo* var, struct my_timming* mt) {
unsigned int pixclock = var->pixclock;
DBG(__func__)
if (!pixclock) pixclock = 10000 ; /* 10ns = 100MHz */
mt->pixclock = 1000000000 / pixclock;
if (mt->pixclock < 1 ) mt->pixclock = 1 ;
mt->mnp = -1 ;
mt->dblscan = var->vmode & FB_VMODE_DOUBLE;
mt->interlaced = var->vmode & FB_VMODE_INTERLACED;
mt->HDisplay = var->xres;
mt->HSyncStart = mt->HDisplay + var->right_margin;
mt->HSyncEnd = mt->HSyncStart + var->hsync_len;
mt->HTotal = mt->HSyncEnd + var->left_margin;
mt->VDisplay = var->yres;
mt->VSyncStart = mt->VDisplay + var->lower_margin;
mt->VSyncEnd = mt->VSyncStart + var->vsync_len;
mt->VTotal = mt->VSyncEnd + var->upper_margin;
mt->sync = var->sync;
}
int matroxfb_PLL_calcclock(const struct matrox_pll_features* pll, unsigned int freq, unsigned int fmax,
unsigned int * in, unsigned int * feed, unsigned int * post) {
unsigned int bestdiff = ~0 ;
unsigned int bestvco = 0 ;
unsigned int fxtal = pll->ref_freq;
unsigned int fwant;
unsigned int p;
DBG(__func__)
fwant = freq;
#ifdef DEBUG
printk(KERN_ERR "post_shift_max: %d\n" , pll->post_shift_max);
printk(KERN_ERR "ref_freq: %d\n" , pll->ref_freq);
printk(KERN_ERR "freq: %d\n" , freq);
printk(KERN_ERR "vco_freq_min: %d\n" , pll->vco_freq_min);
printk(KERN_ERR "in_div_min: %d\n" , pll->in_div_min);
printk(KERN_ERR "in_div_max: %d\n" , pll->in_div_max);
printk(KERN_ERR "feed_div_min: %d\n" , pll->feed_div_min);
printk(KERN_ERR "feed_div_max: %d\n" , pll->feed_div_max);
printk(KERN_ERR "fmax: %d\n" , fmax);
#endif
for (p = 1 ; p <= pll->post_shift_max; p++) {
if (fwant * 2 > fmax)
break ;
fwant *= 2 ;
}
if (fwant < pll->vco_freq_min) fwant = pll->vco_freq_min;
if (fwant > fmax) fwant = fmax;
for (; p-- > 0 ; fwant >>= 1 , bestdiff >>= 1 ) {
unsigned int m;
if (fwant < pll->vco_freq_min) break ;
for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
unsigned int diff, fvco;
unsigned int n;
n = (fwant * (m + 1 ) + (fxtal >> 1 )) / fxtal - 1 ;
if (n > pll->feed_div_max)
break ;
if (n < pll->feed_div_min)
n = pll->feed_div_min;
fvco = (fxtal * (n + 1 )) / (m + 1 );
if (fvco < fwant)
diff = fwant - fvco;
else
diff = fvco - fwant;
if (diff < bestdiff) {
bestdiff = diff;
*post = p;
*in = m;
*feed = n;
bestvco = fvco;
}
}
}
dprintk(KERN_ERR "clk: %02X %02X %02X %d %d %d\n" , *in, *feed, *post, fxtal, bestvco, fwant);
return bestvco;
}
int matroxfb_vgaHWinit(struct matrox_fb_info *minfo, struct my_timming *m)
{
unsigned int hd, hs, he, hbe, ht;
unsigned int vd, vs, ve, vt, lc;
unsigned int wd;
unsigned int divider;
int i;
struct matrox_hw_state * const hw = &minfo->hw;
DBG(__func__)
hw->SEQ[0 ] = 0 x00;
hw->SEQ[1 ] = 0 x01; /* or 0x09 */
hw->SEQ[2 ] = 0 x0F; /* bitplanes */
hw->SEQ[3 ] = 0 x00;
hw->SEQ[4 ] = 0 x0E;
/* CRTC 0..7, 9, 16..19, 21, 22 are reprogrammed by Matrox Millennium code... Hope that by MGA1064 too */
if (m->dblscan) {
m->VTotal <<= 1 ;
m->VDisplay <<= 1 ;
m->VSyncStart <<= 1 ;
m->VSyncEnd <<= 1 ;
}
if (m->interlaced) {
m->VTotal >>= 1 ;
m->VDisplay >>= 1 ;
m->VSyncStart >>= 1 ;
m->VSyncEnd >>= 1 ;
}
/* GCTL is ignored when not using 0xA0000 aperture */
hw->GCTL[0 ] = 0 x00;
hw->GCTL[1 ] = 0 x00;
hw->GCTL[2 ] = 0 x00;
hw->GCTL[3 ] = 0 x00;
hw->GCTL[4 ] = 0 x00;
hw->GCTL[5 ] = 0 x40;
hw->GCTL[6 ] = 0 x05;
hw->GCTL[7 ] = 0 x0F;
hw->GCTL[8 ] = 0 xFF;
/* Whole ATTR is ignored in PowerGraphics mode */
for (i = 0 ; i < 16 ; i++)
hw->ATTR[i] = i;
hw->ATTR[16 ] = 0 x41;
hw->ATTR[17 ] = 0 xFF;
hw->ATTR[18 ] = 0 x0F;
hw->ATTR[19 ] = 0 x00;
hw->ATTR[20 ] = 0 x00;
hd = m->HDisplay >> 3 ;
hs = m->HSyncStart >> 3 ;
he = m->HSyncEnd >> 3 ;
ht = m->HTotal >> 3 ;
/* standard timmings are in 8pixels, but for interleaved we cannot */
/* do it for 4bpp (because of (4bpp >> 1(interleaved))/4 == 0) */
/* using 16 or more pixels per unit can save us */
divider = minfo->curr.final_bppShift;
while (divider & 3 ) {
hd >>= 1 ;
hs >>= 1 ;
he >>= 1 ;
ht >>= 1 ;
divider <<= 1 ;
}
divider = divider / 4 ;
/* divider can be from 1 to 8 */
while (divider > 8 ) {
hd <<= 1 ;
hs <<= 1 ;
he <<= 1 ;
ht <<= 1 ;
divider >>= 1 ;
}
hd = hd - 1 ;
hs = hs - 1 ;
he = he - 1 ;
ht = ht - 1 ;
vd = m->VDisplay - 1 ;
vs = m->VSyncStart - 1 ;
ve = m->VSyncEnd - 1 ;
vt = m->VTotal - 2 ;
lc = vd;
/* G200 cannot work with (ht & 7) == 6 */
if (((ht & 0 x07) == 0 x06) || ((ht & 0 x0F) == 0 x04))
ht++;
hbe = ht;
wd = minfo->fbcon.var.xres_virtual * minfo->curr.final_bppShift / 64 ;
hw->CRTCEXT[0 ] = 0 ;
hw->CRTCEXT[5 ] = 0 ;
if (m->interlaced) {
hw->CRTCEXT[0 ] = 0 x80;
hw->CRTCEXT[5 ] = (hs + he - ht) >> 1 ;
if (!m->dblscan)
wd <<= 1 ;
vt &= ~1 ;
}
hw->CRTCEXT[0 ] |= (wd & 0 x300) >> 4 ;
hw->CRTCEXT[1 ] = (((ht - 4 ) & 0 x100) >> 8 ) |
((hd & 0 x100) >> 7 ) | /* blanking */
((hs & 0 x100) >> 6 ) | /* sync start */
(hbe & 0 x040); /* end hor. blanking */
/* FIXME: Enable vidrst only on G400, and only if TV-out is used */
if (minfo->outputs[1 ].src == MATROXFB_SRC_CRTC1)
hw->CRTCEXT[1 ] |= 0 x88; /* enable horizontal and vertical vidrst */
hw->CRTCEXT[2 ] = ((vt & 0 xC00) >> 10 ) |
((vd & 0 x400) >> 8 ) | /* disp end */
((vd & 0 xC00) >> 7 ) | /* vblanking start */
((vs & 0 xC00) >> 5 ) |
((lc & 0 x400) >> 3 );
hw->CRTCEXT[3 ] = (divider - 1 ) | 0 x80;
hw->CRTCEXT[4 ] = 0 ;
hw->CRTC[0 ] = ht-4 ;
hw->CRTC[1 ] = hd;
hw->CRTC[2 ] = hd;
hw->CRTC[3 ] = (hbe & 0 x1F) | 0 x80;
hw->CRTC[4 ] = hs;
hw->CRTC[5 ] = ((hbe & 0 x20) << 2 ) | (he & 0 x1F);
hw->CRTC[6 ] = vt & 0 xFF;
hw->CRTC[7 ] = ((vt & 0 x100) >> 8 ) |
((vd & 0 x100) >> 7 ) |
((vs & 0 x100) >> 6 ) |
((vd & 0 x100) >> 5 ) |
((lc & 0 x100) >> 4 ) |
((vt & 0 x200) >> 4 ) |
((vd & 0 x200) >> 3 ) |
((vs & 0 x200) >> 2 );
hw->CRTC[8 ] = 0 x00;
hw->CRTC[9 ] = ((vd & 0 x200) >> 4 ) |
((lc & 0 x200) >> 3 );
if (m->dblscan && !m->interlaced)
hw->CRTC[9 ] |= 0 x80;
for (i = 10 ; i < 16 ; i++)
hw->CRTC[i] = 0 x00;
hw->CRTC[16 ] = vs /* & 0xFF */;
hw->CRTC[17 ] = (ve & 0 x0F) | 0 x20;
hw->CRTC[18 ] = vd /* & 0xFF */;
hw->CRTC[19 ] = wd /* & 0xFF */;
hw->CRTC[20 ] = 0 x00;
hw->CRTC[21 ] = vd /* & 0xFF */;
hw->CRTC[22 ] = (vt + 1 ) /* & 0xFF */;
hw->CRTC[23 ] = 0 xC3;
hw->CRTC[24 ] = lc;
return 0 ;
};
void matroxfb_vgaHWrestore(struct matrox_fb_info *minfo)
{
int i;
struct matrox_hw_state * const hw = &minfo->hw;
CRITFLAGS
DBG(__func__)
dprintk(KERN_INFO "MiscOutReg: %02X\n" , hw->MiscOutReg);
dprintk(KERN_INFO "SEQ regs: " );
for (i = 0 ; i < 5 ; i++)
dprintk("%02X:" , hw->SEQ[i]);
dprintk("\n" );
dprintk(KERN_INFO "GDC regs: " );
for (i = 0 ; i < 9 ; i++)
dprintk("%02X:" , hw->GCTL[i]);
dprintk("\n" );
dprintk(KERN_INFO "CRTC regs: " );
for (i = 0 ; i < 25 ; i++)
dprintk("%02X:" , hw->CRTC[i]);
dprintk("\n" );
dprintk(KERN_INFO "ATTR regs: " );
for (i = 0 ; i < 21 ; i++)
dprintk("%02X:" , hw->ATTR[i]);
dprintk("\n" );
CRITBEGIN
mga_inb(M_ATTR_RESET);
mga_outb(M_ATTR_INDEX, 0 );
mga_outb(M_MISC_REG, hw->MiscOutReg);
for (i = 1 ; i < 5 ; i++)
mga_setr(M_SEQ_INDEX, i, hw->SEQ[i]);
mga_setr(M_CRTC_INDEX, 17 , hw->CRTC[17 ] & 0 x7F);
for (i = 0 ; i < 25 ; i++)
mga_setr(M_CRTC_INDEX, i, hw->CRTC[i]);
for (i = 0 ; i < 9 ; i++)
mga_setr(M_GRAPHICS_INDEX, i, hw->GCTL[i]);
for (i = 0 ; i < 21 ; i++) {
mga_inb(M_ATTR_RESET);
mga_outb(M_ATTR_INDEX, i);
mga_outb(M_ATTR_INDEX, hw->ATTR[i]);
}
mga_outb(M_PALETTE_MASK, 0 xFF);
mga_outb(M_DAC_REG, 0 x00);
for (i = 0 ; i < 768 ; i++)
mga_outb(M_DAC_VAL, hw->DACpal[i]);
mga_inb(M_ATTR_RESET);
mga_outb(M_ATTR_INDEX, 0 x20);
CRITEND
}
static void get_pins(unsigned char __iomem* pins, struct matrox_bios* bd) {
unsigned int b0 = readb(pins);
if (b0 == 0 x2E && readb(pins+1 ) == 0 x41) {
unsigned int pins_len = readb(pins+2 );
unsigned int i;
unsigned char cksum;
unsigned char * dst = bd->pins;
if (pins_len < 3 || pins_len > 128 ) {
return ;
}
*dst++ = 0 x2E;
*dst++ = 0 x41;
*dst++ = pins_len;
cksum = 0 x2E + 0 x41 + pins_len;
for (i = 3 ; i < pins_len; i++) {
cksum += *dst++ = readb(pins+i);
}
if (cksum) {
return ;
}
bd->pins_len = pins_len;
} else if (b0 == 0 x40 && readb(pins+1 ) == 0 x00) {
unsigned int i;
unsigned char * dst = bd->pins;
*dst++ = 0 x40;
*dst++ = 0 ;
for (i = 2 ; i < 0 x40; i++) {
*dst++ = readb(pins+i);
}
bd->pins_len = 0 x40;
}
}
static void get_bios_version(unsigned char __iomem * vbios, struct matrox_bios* bd) {
unsigned int pcir_offset;
pcir_offset = readb(vbios + 24 ) | (readb(vbios + 25 ) << 8 );
if (pcir_offset >= 26 && pcir_offset < 0 xFFE0 &&
readb(vbios + pcir_offset ) == 'P' &&
readb(vbios + pcir_offset + 1 ) == 'C' &&
readb(vbios + pcir_offset + 2 ) == 'I' &&
readb(vbios + pcir_offset + 3 ) == 'R' ) {
unsigned char h;
h = readb(vbios + pcir_offset + 0 x12);
bd->version.vMaj = (h >> 4 ) & 0 xF;
bd->version.vMin = h & 0 xF;
bd->version.vRev = readb(vbios + pcir_offset + 0 x13);
} else {
unsigned char h;
h = readb(vbios + 5 );
bd->version.vMaj = (h >> 4 ) & 0 xF;
bd->version.vMin = h & 0 xF;
bd->version.vRev = 0 ;
}
}
static void get_bios_output(unsigned char __iomem* vbios, struct matrox_bios* bd) {
unsigned char b;
b = readb(vbios + 0 x7FF1);
if (b == 0 xFF) {
b = 0 ;
}
bd->output.state = b;
}
static void get_bios_tvout(unsigned char __iomem* vbios, struct matrox_bios* bd) {
unsigned int i;
/* Check for 'IBM .*(V....TVO' string - it means TVO BIOS */
bd->output.tvout = 0 ;
if (readb(vbios + 0 x1D) != 'I' ||
readb(vbios + 0 x1E) != 'B' ||
readb(vbios + 0 x1F) != 'M' ||
readb(vbios + 0 x20) != ' ' ) {
return ;
}
for (i = 0 x2D; i < 0 x2D + 128 ; i++) {
unsigned char b = readb(vbios + i);
if (b == '(' && readb(vbios + i + 1 ) == 'V' ) {
if (readb(vbios + i + 6 ) == 'T' &&
readb(vbios + i + 7 ) == 'V' &&
readb(vbios + i + 8 ) == 'O' ) {
bd->output.tvout = 1 ;
}
return ;
}
if (b == 0 )
break ;
}
}
static void parse_bios(unsigned char __iomem* vbios, struct matrox_bios* bd) {
unsigned int pins_offset;
if (readb(vbios) != 0 x55 || readb(vbios + 1 ) != 0 xAA) {
return ;
}
bd->bios_valid = 1 ;
get_bios_version(vbios, bd);
get_bios_output(vbios, bd);
get_bios_tvout(vbios, bd);
#if defined (__powerpc__)
/* On PowerPC cards, the PInS offset isn't stored at the end of the
* BIOS image. Instead, you must search the entire BIOS image for
* the magic PInS signature.
*
* This actually applies to all OpenFirmware base cards. Since these
* cards could be put in a MIPS or SPARC system, should the condition
* be something different?
*/
for ( pins_offset = 0 ; pins_offset <= 0 xFF80 ; pins_offset++ ) {
unsigned char header[3 ];
header[0 ] = readb(vbios + pins_offset);
header[1 ] = readb(vbios + pins_offset + 1 );
header[2 ] = readb(vbios + pins_offset + 2 );
if ( (header[0 ] == 0 x2E) && (header[1 ] == 0 x41)
&& ((header[2 ] == 0 x40) || (header[2 ] == 0 x80)) ) {
printk(KERN_INFO "PInS data found at offset %u\n" ,
pins_offset);
get_pins(vbios + pins_offset, bd);
break ;
}
}
#else
pins_offset = readb(vbios + 0 x7FFC) | (readb(vbios + 0 x7FFD) << 8 );
if (pins_offset <= 0 xFF80) {
get_pins(vbios + pins_offset, bd);
}
#endif
}
static int parse_pins1(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
unsigned int maxdac;
switch (bd->pins[22 ]) {
case 0 : maxdac = 175000 ; break ;
case 1 : maxdac = 220000 ; break ;
default : maxdac = 240000 ; break ;
}
if (get_unaligned_le16(bd->pins + 24 )) {
maxdac = get_unaligned_le16(bd->pins + 24 ) * 10 ;
}
minfo->limits.pixel.vcomax = maxdac;
minfo->values.pll.system = get_unaligned_le16(bd->pins + 28 ) ?
get_unaligned_le16(bd->pins + 28 ) * 10 : 50000 ;
/* ignore 4MB, 8MB, module clocks */
minfo->features.pll.ref_freq = 14318 ;
minfo->values.reg.mctlwtst = 0 x00030101;
return 0 ;
}
static void default_pins1(struct matrox_fb_info *minfo)
{
/* Millennium */
minfo->limits.pixel.vcomax = 220000 ;
minfo->values.pll.system = 50000 ;
minfo->features.pll.ref_freq = 14318 ;
minfo->values.reg.mctlwtst = 0 x00030101;
}
static int parse_pins2(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax = (bd->pins[41 ] == 0 xFF) ? 230000 : ((bd->pins[41 ] + 100 ) * 1000 );
minfo->values.reg.mctlwtst = ((bd->pins[51 ] & 0 x01) ? 0 x00000001 : 0 ) |
((bd->pins[51 ] & 0 x02) ? 0 x00000100 : 0 ) |
((bd->pins[51 ] & 0 x04) ? 0 x00010000 : 0 ) |
((bd->pins[51 ] & 0 x08) ? 0 x00020000 : 0 );
minfo->values.pll.system = (bd->pins[43 ] == 0 xFF) ? 50000 : ((bd->pins[43 ] + 100 ) * 1000 );
minfo->features.pll.ref_freq = 14318 ;
return 0 ;
}
static void default_pins2(struct matrox_fb_info *minfo)
{
/* Millennium II, Mystique */
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax = 230000 ;
minfo->values.reg.mctlwtst = 0 x00030101;
minfo->values.pll.system = 50000 ;
minfo->features.pll.ref_freq = 14318 ;
}
static int parse_pins3(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax = (bd->pins[36 ] == 0 xFF) ? 230000 : ((bd->pins[36 ] + 100 ) * 1000 );
minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 48 ) == 0 xFFFFFFFF ?
0 x01250A21 : get_unaligned_le32(bd->pins + 48 );
/* memory config */
minfo->values.reg.memrdbk = ((bd->pins[57 ] << 21 ) & 0 x1E000000) |
((bd->pins[57 ] << 22 ) & 0 x00C00000) |
((bd->pins[56 ] << 1 ) & 0 x000001E0) |
( bd->pins[56 ] & 0 x0000000F);
minfo->values.reg.opt = (bd->pins[54 ] & 7 ) << 10 ;
minfo->values.reg.opt2 = bd->pins[58 ] << 12 ;
minfo->features.pll.ref_freq = (bd->pins[52 ] & 0 x20) ? 14318 : 27000 ;
return 0 ;
}
static void default_pins3(struct matrox_fb_info *minfo)
{
/* G100, G200 */
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax = 230000 ;
minfo->values.reg.mctlwtst = 0 x01250A21;
minfo->values.reg.memrdbk = 0 x00000000;
minfo->values.reg.opt = 0 x00000C00;
minfo->values.reg.opt2 = 0 x00000000;
minfo->features.pll.ref_freq = 27000 ;
}
static int parse_pins4(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
minfo->limits.pixel.vcomax = (bd->pins[ 39 ] == 0 xFF) ? 230000 : bd->pins[ 39 ] * 4000 ;
minfo->limits.system.vcomax = (bd->pins[ 38 ] == 0 xFF) ? minfo->limits.pixel.vcomax : bd->pins[ 38 ] * 4000 ;
minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 71 );
minfo->values.reg.memrdbk = ((bd->pins[87 ] << 21 ) & 0 x1E000000) |
((bd->pins[87 ] << 22 ) & 0 x00C00000) |
((bd->pins[86 ] << 1 ) & 0 x000001E0) |
( bd->pins[86 ] & 0 x0000000F);
minfo->values.reg.opt = ((bd->pins[53 ] << 15 ) & 0 x00400000) |
((bd->pins[53 ] << 22 ) & 0 x10000000) |
((bd->pins[53 ] << 7 ) & 0 x00001C00);
minfo->values.reg.opt3 = get_unaligned_le32(bd->pins + 67 );
minfo->values.pll.system = (bd->pins[ 65 ] == 0 xFF) ? 200000 : bd->pins[ 65 ] * 4000 ;
minfo->features.pll.ref_freq = (bd->pins[ 92 ] & 0 x01) ? 14318 : 27000 ;
return 0 ;
}
static void default_pins4(struct matrox_fb_info *minfo)
{
/* G400 */
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax = 252000 ;
minfo->values.reg.mctlwtst = 0 x04A450A1;
minfo->values.reg.memrdbk = 0 x000000E7;
minfo->values.reg.opt = 0 x10000400;
minfo->values.reg.opt3 = 0 x0190A419;
minfo->values.pll.system = 200000 ;
minfo->features.pll.ref_freq = 27000 ;
}
static int parse_pins5(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
unsigned int mult;
mult = bd->pins[4 ]?8000 :6000 ;
minfo->limits.pixel.vcomax = (bd->pins[ 38 ] == 0 xFF) ? 600000 : bd->pins[ 38 ] * mult;
minfo->limits.system.vcomax = (bd->pins[ 36 ] == 0 xFF) ? minfo->limits.pixel.vcomax : bd->pins[ 36 ] * mult;
minfo->limits.video.vcomax = (bd->pins[ 37 ] == 0 xFF) ? minfo->limits.system.vcomax : bd->pins[ 37 ] * mult;
minfo->limits.pixel.vcomin = (bd->pins[123 ] == 0 xFF) ? 256000 : bd->pins[123 ] * mult;
minfo->limits.system.vcomin = (bd->pins[121 ] == 0 xFF) ? minfo->limits.pixel.vcomin : bd->pins[121 ] * mult;
minfo->limits.video.vcomin = (bd->pins[122 ] == 0 xFF) ? minfo->limits.system.vcomin : bd->pins[122 ] * mult;
minfo->values.pll.system =
minfo->values.pll.video = (bd->pins[ 92 ] == 0 xFF) ? 284000 : bd->pins[ 92 ] * 4000 ;
minfo->values.reg.opt = get_unaligned_le32(bd->pins + 48 );
minfo->values.reg.opt2 = get_unaligned_le32(bd->pins + 52 );
minfo->values.reg.opt3 = get_unaligned_le32(bd->pins + 94 );
minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 98 );
minfo->values.reg.memmisc = get_unaligned_le32(bd->pins + 102 );
minfo->values.reg.memrdbk = get_unaligned_le32(bd->pins + 106 );
minfo->features.pll.ref_freq = (bd->pins[110 ] & 0 x01) ? 14318 : 27000 ;
minfo->values.memory.ddr = (bd->pins[114 ] & 0 x60) == 0 x20;
minfo->values.memory.dll = (bd->pins[115 ] & 0 x02) != 0 ;
minfo->values.memory.emrswen = (bd->pins[115 ] & 0 x01) != 0 ;
minfo->values.reg.maccess = minfo->values.memory.emrswen ? 0 x00004000 : 0 x00000000;
if (bd->pins[115 ] & 4 ) {
minfo->values.reg.mctlwtst_core = minfo->values.reg.mctlwtst;
} else {
static const u8 wtst_xlat[] = {
0 , 1 , 5 , 6 , 7 , 5 , 2 , 3
};
minfo->values.reg.mctlwtst_core = (minfo->values.reg.mctlwtst & ~7 ) |
wtst_xlat[minfo->values.reg.mctlwtst & 7 ];
}
minfo->max_pixel_clock_panellink = bd->pins[47 ] * 4000 ;
return 0 ;
}
static void default_pins5(struct matrox_fb_info *minfo)
{
/* Mine 16MB G450 with SDRAM DDR */
minfo->limits.pixel.vcomax =
minfo->limits.system.vcomax =
minfo->limits.video.vcomax = 600000 ;
minfo->limits.pixel.vcomin =
minfo->limits.system.vcomin =
minfo->limits.video.vcomin = 256000 ;
minfo->values.pll.system =
minfo->values.pll.video = 284000 ;
minfo->values.reg.opt = 0 x404A1160;
minfo->values.reg.opt2 = 0 x0000AC00;
minfo->values.reg.opt3 = 0 x0090A409;
minfo->values.reg.mctlwtst_core =
minfo->values.reg.mctlwtst = 0 x0C81462B;
minfo->values.reg.memmisc = 0 x80000004;
minfo->values.reg.memrdbk = 0 x01001103;
minfo->features.pll.ref_freq = 27000 ;
minfo->values.memory.ddr = 1 ;
minfo->values.memory.dll = 1 ;
minfo->values.memory.emrswen = 1 ;
minfo->values.reg.maccess = 0 x00004000;
}
static int matroxfb_set_limits(struct matrox_fb_info *minfo,
const struct matrox_bios *bd)
{
unsigned int pins_version;
static const unsigned int pinslen[] = { 64 , 64 , 64 , 128 , 128 };
switch (minfo->chip) {
case MGA_2064: default_pins1(minfo); break ;
case MGA_2164:
case MGA_1064:
case MGA_1164: default_pins2(minfo); break ;
case MGA_G100:
case MGA_G200: default_pins3(minfo); break ;
case MGA_G400: default_pins4(minfo); break ;
case MGA_G450:
case MGA_G550: default_pins5(minfo); break ;
}
if (!bd->bios_valid) {
printk(KERN_INFO "matroxfb: Your Matrox device does not have BIOS\n" );
return -1 ;
}
if (bd->pins_len < 64 ) {
printk(KERN_INFO "matroxfb: BIOS on your Matrox device does not contain powerup info\n" );
return -1 ;
}
if (bd->pins[0 ] == 0 x2E && bd->pins[1 ] == 0 x41) {
pins_version = bd->pins[5 ];
if (pins_version < 2 || pins_version > 5 ) {
printk(KERN_INFO "matroxfb: Unknown version (%u) of powerup info\n" , pins_version);
return -1 ;
}
} else {
pins_version = 1 ;
}
if (bd->pins_len != pinslen[pins_version - 1 ]) {
printk(KERN_INFO "matroxfb: Invalid powerup info\n" );
return -1 ;
}
switch (pins_version) {
case 1 :
return parse_pins1(minfo, bd);
case 2 :
return parse_pins2(minfo, bd);
case 3 :
return parse_pins3(minfo, bd);
case 4 :
return parse_pins4(minfo, bd);
case 5 :
return parse_pins5(minfo, bd);
default :
printk(KERN_DEBUG "matroxfb: Powerup info version %u is not yet supported\n" , pins_version);
return -1 ;
}
}
void matroxfb_read_pins(struct matrox_fb_info *minfo)
{
u32 opt;
u32 biosbase;
u32 fbbase;
struct pci_dev *pdev = minfo->pcidev;
memset(&minfo->bios, 0 , sizeof (minfo->bios));
pci_read_config_dword(pdev, PCI_OPTION_REG, &opt);
pci_write_config_dword(pdev, PCI_OPTION_REG, opt | PCI_OPTION_ENABLE_ROM);
pci_read_config_dword(pdev, PCI_ROM_ADDRESS, &biosbase);
pci_read_config_dword(pdev, minfo->devflags.fbResource, &fbbase);
pci_write_config_dword(pdev, PCI_ROM_ADDRESS, (fbbase & PCI_ROM_ADDRESS_MASK) | PCI_ROM_ADDRESS_ENABLE);
parse_bios(vaddr_va(minfo->video.vbase), &minfo->bios);
pci_write_config_dword(pdev, PCI_ROM_ADDRESS, biosbase);
pci_write_config_dword(pdev, PCI_OPTION_REG, opt);
#ifdef CONFIG_X86
if (!minfo->bios.bios_valid) {
unsigned char __iomem* b;
b = ioremap(0 x000C0000, 65536 );
if (!b) {
printk(KERN_INFO "matroxfb: Unable to map legacy BIOS\n" );
} else {
unsigned int ven = readb(b+0 x64+0 ) | (readb(b+0 x64+1 ) << 8 );
unsigned int dev = readb(b+0 x64+2 ) | (readb(b+0 x64+3 ) << 8 );
if (ven != pdev->vendor || dev != pdev->device) {
printk(KERN_INFO "matroxfb: Legacy BIOS is for %04X:%04X, while this device is %04X:%04X\n" ,
ven, dev, pdev->vendor, pdev->device);
} else {
parse_bios(b, &minfo->bios);
}
iounmap(b);
}
}
#endif
matroxfb_set_limits(minfo, &minfo->bios);
printk(KERN_INFO "PInS memtype = %u\n" ,
(minfo->values.reg.opt & 0 x1C00) >> 10 );
}
EXPORT_SYMBOL(matroxfb_DAC_in);
EXPORT_SYMBOL(matroxfb_DAC_out);
EXPORT_SYMBOL(matroxfb_var2my);
EXPORT_SYMBOL(matroxfb_PLL_calcclock);
EXPORT_SYMBOL(matroxfb_vgaHWinit); /* DAC1064, Ti3026 */
EXPORT_SYMBOL(matroxfb_vgaHWrestore); /* DAC1064, Ti3026 */
EXPORT_SYMBOL(matroxfb_read_pins);
MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>" );
MODULE_DESCRIPTION("Miscellaneous support for Matrox video cards" );
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-06-07)
¤
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