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linux-zen-server/drivers/video/fbdev/matrox/matroxfb_misc.c

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2023-08-30 17:53:23 +02:00
// 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 "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] = 0x00;
hw->SEQ[1] = 0x01; /* or 0x09 */
hw->SEQ[2] = 0x0F; /* bitplanes */
hw->SEQ[3] = 0x00;
hw->SEQ[4] = 0x0E;
/* 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] = 0x00;
hw->GCTL[1] = 0x00;
hw->GCTL[2] = 0x00;
hw->GCTL[3] = 0x00;
hw->GCTL[4] = 0x00;
hw->GCTL[5] = 0x40;
hw->GCTL[6] = 0x05;
hw->GCTL[7] = 0x0F;
hw->GCTL[8] = 0xFF;
/* Whole ATTR is ignored in PowerGraphics mode */
for (i = 0; i < 16; i++)
hw->ATTR[i] = i;
hw->ATTR[16] = 0x41;
hw->ATTR[17] = 0xFF;
hw->ATTR[18] = 0x0F;
hw->ATTR[19] = 0x00;
hw->ATTR[20] = 0x00;
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 & 0x07) == 0x06) || ((ht & 0x0F) == 0x04))
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] = 0x80;
hw->CRTCEXT[5] = (hs + he - ht) >> 1;
if (!m->dblscan)
wd <<= 1;
vt &= ~1;
}
hw->CRTCEXT[0] |= (wd & 0x300) >> 4;
hw->CRTCEXT[1] = (((ht - 4) & 0x100) >> 8) |
((hd & 0x100) >> 7) | /* blanking */
((hs & 0x100) >> 6) | /* sync start */
(hbe & 0x040); /* 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] |= 0x88; /* enable horizontal and vertical vidrst */
hw->CRTCEXT[2] = ((vt & 0xC00) >> 10) |
((vd & 0x400) >> 8) | /* disp end */
((vd & 0xC00) >> 7) | /* vblanking start */
((vs & 0xC00) >> 5) |
((lc & 0x400) >> 3);
hw->CRTCEXT[3] = (divider - 1) | 0x80;
hw->CRTCEXT[4] = 0;
hw->CRTC[0] = ht-4;
hw->CRTC[1] = hd;
hw->CRTC[2] = hd;
hw->CRTC[3] = (hbe & 0x1F) | 0x80;
hw->CRTC[4] = hs;
hw->CRTC[5] = ((hbe & 0x20) << 2) | (he & 0x1F);
hw->CRTC[6] = vt & 0xFF;
hw->CRTC[7] = ((vt & 0x100) >> 8) |
((vd & 0x100) >> 7) |
((vs & 0x100) >> 6) |
((vd & 0x100) >> 5) |
((lc & 0x100) >> 4) |
((vt & 0x200) >> 4) |
((vd & 0x200) >> 3) |
((vs & 0x200) >> 2);
hw->CRTC[8] = 0x00;
hw->CRTC[9] = ((vd & 0x200) >> 4) |
((lc & 0x200) >> 3);
if (m->dblscan && !m->interlaced)
hw->CRTC[9] |= 0x80;
for (i = 10; i < 16; i++)
hw->CRTC[i] = 0x00;
hw->CRTC[16] = vs /* & 0xFF */;
hw->CRTC[17] = (ve & 0x0F) | 0x20;
hw->CRTC[18] = vd /* & 0xFF */;
hw->CRTC[19] = wd /* & 0xFF */;
hw->CRTC[20] = 0x00;
hw->CRTC[21] = vd /* & 0xFF */;
hw->CRTC[22] = (vt + 1) /* & 0xFF */;
hw->CRTC[23] = 0xC3;
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] & 0x7F);
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, 0xFF);
mga_outb(M_DAC_REG, 0x00);
for (i = 0; i < 768; i++)
mga_outb(M_DAC_VAL, hw->DACpal[i]);
mga_inb(M_ATTR_RESET);
mga_outb(M_ATTR_INDEX, 0x20);
CRITEND
}
static void get_pins(unsigned char __iomem* pins, struct matrox_bios* bd) {
unsigned int b0 = readb(pins);
if (b0 == 0x2E && readb(pins+1) == 0x41) {
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++ = 0x2E;
*dst++ = 0x41;
*dst++ = pins_len;
cksum = 0x2E + 0x41 + 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 == 0x40 && readb(pins+1) == 0x00) {
unsigned int i;
unsigned char* dst = bd->pins;
*dst++ = 0x40;
*dst++ = 0;
for (i = 2; i < 0x40; i++) {
*dst++ = readb(pins+i);
}
bd->pins_len = 0x40;
}
}
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 < 0xFFE0 &&
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 + 0x12);
bd->version.vMaj = (h >> 4) & 0xF;
bd->version.vMin = h & 0xF;
bd->version.vRev = readb(vbios + pcir_offset + 0x13);
} else {
unsigned char h;
h = readb(vbios + 5);
bd->version.vMaj = (h >> 4) & 0xF;
bd->version.vMin = h & 0xF;
bd->version.vRev = 0;
}
}
static void get_bios_output(unsigned char __iomem* vbios, struct matrox_bios* bd) {
unsigned char b;
b = readb(vbios + 0x7FF1);
if (b == 0xFF) {
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 + 0x1D) != 'I' ||
readb(vbios + 0x1E) != 'B' ||
readb(vbios + 0x1F) != 'M' ||
readb(vbios + 0x20) != ' ') {
return;
}
for (i = 0x2D; i < 0x2D + 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) != 0x55 || readb(vbios + 1) != 0xAA) {
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 <= 0xFF80 ; 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] == 0x2E) && (header[1] == 0x41)
&& ((header[2] == 0x40) || (header[2] == 0x80)) ) {
printk(KERN_INFO "PInS data found at offset %u\n",
pins_offset);
get_pins(vbios + pins_offset, bd);
break;
}
}
#else
pins_offset = readb(vbios + 0x7FFC) | (readb(vbios + 0x7FFD) << 8);
if (pins_offset <= 0xFF80) {
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 = 0x00030101;
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 = 0x00030101;
}
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] == 0xFF) ? 230000 : ((bd->pins[41] + 100) * 1000);
minfo->values.reg.mctlwtst = ((bd->pins[51] & 0x01) ? 0x00000001 : 0) |
((bd->pins[51] & 0x02) ? 0x00000100 : 0) |
((bd->pins[51] & 0x04) ? 0x00010000 : 0) |
((bd->pins[51] & 0x08) ? 0x00020000 : 0);
minfo->values.pll.system = (bd->pins[43] == 0xFF) ? 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 = 0x00030101;
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] == 0xFF) ? 230000 : ((bd->pins[36] + 100) * 1000);
minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 48) == 0xFFFFFFFF ?
0x01250A21 : get_unaligned_le32(bd->pins + 48);
/* memory config */
minfo->values.reg.memrdbk = ((bd->pins[57] << 21) & 0x1E000000) |
((bd->pins[57] << 22) & 0x00C00000) |
((bd->pins[56] << 1) & 0x000001E0) |
( bd->pins[56] & 0x0000000F);
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] & 0x20) ? 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 = 0x01250A21;
minfo->values.reg.memrdbk = 0x00000000;
minfo->values.reg.opt = 0x00000C00;
minfo->values.reg.opt2 = 0x00000000;
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] == 0xFF) ? 230000 : bd->pins[ 39] * 4000;
minfo->limits.system.vcomax = (bd->pins[ 38] == 0xFF) ? 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) & 0x1E000000) |
((bd->pins[87] << 22) & 0x00C00000) |
((bd->pins[86] << 1) & 0x000001E0) |
( bd->pins[86] & 0x0000000F);
minfo->values.reg.opt = ((bd->pins[53] << 15) & 0x00400000) |
((bd->pins[53] << 22) & 0x10000000) |
((bd->pins[53] << 7) & 0x00001C00);
minfo->values.reg.opt3 = get_unaligned_le32(bd->pins + 67);
minfo->values.pll.system = (bd->pins[ 65] == 0xFF) ? 200000 : bd->pins[ 65] * 4000;
minfo->features.pll.ref_freq = (bd->pins[ 92] & 0x01) ? 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 = 0x04A450A1;
minfo->values.reg.memrdbk = 0x000000E7;
minfo->values.reg.opt = 0x10000400;
minfo->values.reg.opt3 = 0x0190A419;
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] == 0xFF) ? 600000 : bd->pins[ 38] * mult;
minfo->limits.system.vcomax = (bd->pins[ 36] == 0xFF) ? minfo->limits.pixel.vcomax : bd->pins[ 36] * mult;
minfo->limits.video.vcomax = (bd->pins[ 37] == 0xFF) ? minfo->limits.system.vcomax : bd->pins[ 37] * mult;
minfo->limits.pixel.vcomin = (bd->pins[123] == 0xFF) ? 256000 : bd->pins[123] * mult;
minfo->limits.system.vcomin = (bd->pins[121] == 0xFF) ? minfo->limits.pixel.vcomin : bd->pins[121] * mult;
minfo->limits.video.vcomin = (bd->pins[122] == 0xFF) ? minfo->limits.system.vcomin : bd->pins[122] * mult;
minfo->values.pll.system =
minfo->values.pll.video = (bd->pins[ 92] == 0xFF) ? 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] & 0x01) ? 14318 : 27000;
minfo->values.memory.ddr = (bd->pins[114] & 0x60) == 0x20;
minfo->values.memory.dll = (bd->pins[115] & 0x02) != 0;
minfo->values.memory.emrswen = (bd->pins[115] & 0x01) != 0;
minfo->values.reg.maccess = minfo->values.memory.emrswen ? 0x00004000 : 0x00000000;
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 = 0x404A1160;
minfo->values.reg.opt2 = 0x0000AC00;
minfo->values.reg.opt3 = 0x0090A409;
minfo->values.reg.mctlwtst_core =
minfo->values.reg.mctlwtst = 0x0C81462B;
minfo->values.reg.memmisc = 0x80000004;
minfo->values.reg.memrdbk = 0x01001103;
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 = 0x00004000;
}
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] == 0x2E && bd->pins[1] == 0x41) {
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(0x000C0000, 65536);
if (!b) {
printk(KERN_INFO "matroxfb: Unable to map legacy BIOS\n");
} else {
unsigned int ven = readb(b+0x64+0) | (readb(b+0x64+1) << 8);
unsigned int dev = readb(b+0x64+2) | (readb(b+0x64+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 & 0x1C00) >> 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");