This source file includes following definitions.
- matroxfb_DAC_out
- matroxfb_DAC_in
- matroxfb_var2my
- matroxfb_PLL_calcclock
- matroxfb_vgaHWinit
- matroxfb_vgaHWrestore
- get_pins
- get_bios_version
- get_bios_output
- get_bios_tvout
- parse_bios
- parse_pins1
- default_pins1
- parse_pins2
- default_pins2
- parse_pins3
- default_pins3
- parse_pins4
- default_pins4
- parse_pins5
- default_pins5
- matroxfb_set_limits
- matroxfb_read_pins
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89 #include "matroxfb_misc.h"
90 #include <linux/interrupt.h>
91 #include <linux/matroxfb.h>
92
93 void matroxfb_DAC_out(const struct matrox_fb_info *minfo, int reg, int val)
94 {
95 DBG_REG(__func__)
96 mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
97 mga_outb(M_RAMDAC_BASE+M_X_DATAREG, val);
98 }
99
100 int matroxfb_DAC_in(const struct matrox_fb_info *minfo, int reg)
101 {
102 DBG_REG(__func__)
103 mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
104 return mga_inb(M_RAMDAC_BASE+M_X_DATAREG);
105 }
106
107 void matroxfb_var2my(struct fb_var_screeninfo* var, struct my_timming* mt) {
108 unsigned int pixclock = var->pixclock;
109
110 DBG(__func__)
111
112 if (!pixclock) pixclock = 10000;
113 mt->pixclock = 1000000000 / pixclock;
114 if (mt->pixclock < 1) mt->pixclock = 1;
115 mt->mnp = -1;
116 mt->dblscan = var->vmode & FB_VMODE_DOUBLE;
117 mt->interlaced = var->vmode & FB_VMODE_INTERLACED;
118 mt->HDisplay = var->xres;
119 mt->HSyncStart = mt->HDisplay + var->right_margin;
120 mt->HSyncEnd = mt->HSyncStart + var->hsync_len;
121 mt->HTotal = mt->HSyncEnd + var->left_margin;
122 mt->VDisplay = var->yres;
123 mt->VSyncStart = mt->VDisplay + var->lower_margin;
124 mt->VSyncEnd = mt->VSyncStart + var->vsync_len;
125 mt->VTotal = mt->VSyncEnd + var->upper_margin;
126 mt->sync = var->sync;
127 }
128
129 int matroxfb_PLL_calcclock(const struct matrox_pll_features* pll, unsigned int freq, unsigned int fmax,
130 unsigned int* in, unsigned int* feed, unsigned int* post) {
131 unsigned int bestdiff = ~0;
132 unsigned int bestvco = 0;
133 unsigned int fxtal = pll->ref_freq;
134 unsigned int fwant;
135 unsigned int p;
136
137 DBG(__func__)
138
139 fwant = freq;
140
141 #ifdef DEBUG
142 printk(KERN_ERR "post_shift_max: %d\n", pll->post_shift_max);
143 printk(KERN_ERR "ref_freq: %d\n", pll->ref_freq);
144 printk(KERN_ERR "freq: %d\n", freq);
145 printk(KERN_ERR "vco_freq_min: %d\n", pll->vco_freq_min);
146 printk(KERN_ERR "in_div_min: %d\n", pll->in_div_min);
147 printk(KERN_ERR "in_div_max: %d\n", pll->in_div_max);
148 printk(KERN_ERR "feed_div_min: %d\n", pll->feed_div_min);
149 printk(KERN_ERR "feed_div_max: %d\n", pll->feed_div_max);
150 printk(KERN_ERR "fmax: %d\n", fmax);
151 #endif
152 for (p = 1; p <= pll->post_shift_max; p++) {
153 if (fwant * 2 > fmax)
154 break;
155 fwant *= 2;
156 }
157 if (fwant < pll->vco_freq_min) fwant = pll->vco_freq_min;
158 if (fwant > fmax) fwant = fmax;
159 for (; p-- > 0; fwant >>= 1, bestdiff >>= 1) {
160 unsigned int m;
161
162 if (fwant < pll->vco_freq_min) break;
163 for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
164 unsigned int diff, fvco;
165 unsigned int n;
166
167 n = (fwant * (m + 1) + (fxtal >> 1)) / fxtal - 1;
168 if (n > pll->feed_div_max)
169 break;
170 if (n < pll->feed_div_min)
171 n = pll->feed_div_min;
172 fvco = (fxtal * (n + 1)) / (m + 1);
173 if (fvco < fwant)
174 diff = fwant - fvco;
175 else
176 diff = fvco - fwant;
177 if (diff < bestdiff) {
178 bestdiff = diff;
179 *post = p;
180 *in = m;
181 *feed = n;
182 bestvco = fvco;
183 }
184 }
185 }
186 dprintk(KERN_ERR "clk: %02X %02X %02X %d %d %d\n", *in, *feed, *post, fxtal, bestvco, fwant);
187 return bestvco;
188 }
189
190 int matroxfb_vgaHWinit(struct matrox_fb_info *minfo, struct my_timming *m)
191 {
192 unsigned int hd, hs, he, hbe, ht;
193 unsigned int vd, vs, ve, vt, lc;
194 unsigned int wd;
195 unsigned int divider;
196 int i;
197 struct matrox_hw_state * const hw = &minfo->hw;
198
199 DBG(__func__)
200
201 hw->SEQ[0] = 0x00;
202 hw->SEQ[1] = 0x01;
203 hw->SEQ[2] = 0x0F;
204 hw->SEQ[3] = 0x00;
205 hw->SEQ[4] = 0x0E;
206
207 if (m->dblscan) {
208 m->VTotal <<= 1;
209 m->VDisplay <<= 1;
210 m->VSyncStart <<= 1;
211 m->VSyncEnd <<= 1;
212 }
213 if (m->interlaced) {
214 m->VTotal >>= 1;
215 m->VDisplay >>= 1;
216 m->VSyncStart >>= 1;
217 m->VSyncEnd >>= 1;
218 }
219
220
221 hw->GCTL[0] = 0x00;
222 hw->GCTL[1] = 0x00;
223 hw->GCTL[2] = 0x00;
224 hw->GCTL[3] = 0x00;
225 hw->GCTL[4] = 0x00;
226 hw->GCTL[5] = 0x40;
227 hw->GCTL[6] = 0x05;
228 hw->GCTL[7] = 0x0F;
229 hw->GCTL[8] = 0xFF;
230
231
232 for (i = 0; i < 16; i++)
233 hw->ATTR[i] = i;
234 hw->ATTR[16] = 0x41;
235 hw->ATTR[17] = 0xFF;
236 hw->ATTR[18] = 0x0F;
237 hw->ATTR[19] = 0x00;
238 hw->ATTR[20] = 0x00;
239
240 hd = m->HDisplay >> 3;
241 hs = m->HSyncStart >> 3;
242 he = m->HSyncEnd >> 3;
243 ht = m->HTotal >> 3;
244
245
246
247 divider = minfo->curr.final_bppShift;
248 while (divider & 3) {
249 hd >>= 1;
250 hs >>= 1;
251 he >>= 1;
252 ht >>= 1;
253 divider <<= 1;
254 }
255 divider = divider / 4;
256
257 while (divider > 8) {
258 hd <<= 1;
259 hs <<= 1;
260 he <<= 1;
261 ht <<= 1;
262 divider >>= 1;
263 }
264 hd = hd - 1;
265 hs = hs - 1;
266 he = he - 1;
267 ht = ht - 1;
268 vd = m->VDisplay - 1;
269 vs = m->VSyncStart - 1;
270 ve = m->VSyncEnd - 1;
271 vt = m->VTotal - 2;
272 lc = vd;
273
274 if (((ht & 0x07) == 0x06) || ((ht & 0x0F) == 0x04))
275 ht++;
276 hbe = ht;
277 wd = minfo->fbcon.var.xres_virtual * minfo->curr.final_bppShift / 64;
278
279 hw->CRTCEXT[0] = 0;
280 hw->CRTCEXT[5] = 0;
281 if (m->interlaced) {
282 hw->CRTCEXT[0] = 0x80;
283 hw->CRTCEXT[5] = (hs + he - ht) >> 1;
284 if (!m->dblscan)
285 wd <<= 1;
286 vt &= ~1;
287 }
288 hw->CRTCEXT[0] |= (wd & 0x300) >> 4;
289 hw->CRTCEXT[1] = (((ht - 4) & 0x100) >> 8) |
290 ((hd & 0x100) >> 7) |
291 ((hs & 0x100) >> 6) |
292 (hbe & 0x040);
293
294 if (minfo->outputs[1].src == MATROXFB_SRC_CRTC1)
295 hw->CRTCEXT[1] |= 0x88;
296 hw->CRTCEXT[2] = ((vt & 0xC00) >> 10) |
297 ((vd & 0x400) >> 8) |
298 ((vd & 0xC00) >> 7) |
299 ((vs & 0xC00) >> 5) |
300 ((lc & 0x400) >> 3);
301 hw->CRTCEXT[3] = (divider - 1) | 0x80;
302 hw->CRTCEXT[4] = 0;
303
304 hw->CRTC[0] = ht-4;
305 hw->CRTC[1] = hd;
306 hw->CRTC[2] = hd;
307 hw->CRTC[3] = (hbe & 0x1F) | 0x80;
308 hw->CRTC[4] = hs;
309 hw->CRTC[5] = ((hbe & 0x20) << 2) | (he & 0x1F);
310 hw->CRTC[6] = vt & 0xFF;
311 hw->CRTC[7] = ((vt & 0x100) >> 8) |
312 ((vd & 0x100) >> 7) |
313 ((vs & 0x100) >> 6) |
314 ((vd & 0x100) >> 5) |
315 ((lc & 0x100) >> 4) |
316 ((vt & 0x200) >> 4) |
317 ((vd & 0x200) >> 3) |
318 ((vs & 0x200) >> 2);
319 hw->CRTC[8] = 0x00;
320 hw->CRTC[9] = ((vd & 0x200) >> 4) |
321 ((lc & 0x200) >> 3);
322 if (m->dblscan && !m->interlaced)
323 hw->CRTC[9] |= 0x80;
324 for (i = 10; i < 16; i++)
325 hw->CRTC[i] = 0x00;
326 hw->CRTC[16] = vs ;
327 hw->CRTC[17] = (ve & 0x0F) | 0x20;
328 hw->CRTC[18] = vd ;
329 hw->CRTC[19] = wd ;
330 hw->CRTC[20] = 0x00;
331 hw->CRTC[21] = vd ;
332 hw->CRTC[22] = (vt + 1) ;
333 hw->CRTC[23] = 0xC3;
334 hw->CRTC[24] = lc;
335 return 0;
336 };
337
338 void matroxfb_vgaHWrestore(struct matrox_fb_info *minfo)
339 {
340 int i;
341 struct matrox_hw_state * const hw = &minfo->hw;
342 CRITFLAGS
343
344 DBG(__func__)
345
346 dprintk(KERN_INFO "MiscOutReg: %02X\n", hw->MiscOutReg);
347 dprintk(KERN_INFO "SEQ regs: ");
348 for (i = 0; i < 5; i++)
349 dprintk("%02X:", hw->SEQ[i]);
350 dprintk("\n");
351 dprintk(KERN_INFO "GDC regs: ");
352 for (i = 0; i < 9; i++)
353 dprintk("%02X:", hw->GCTL[i]);
354 dprintk("\n");
355 dprintk(KERN_INFO "CRTC regs: ");
356 for (i = 0; i < 25; i++)
357 dprintk("%02X:", hw->CRTC[i]);
358 dprintk("\n");
359 dprintk(KERN_INFO "ATTR regs: ");
360 for (i = 0; i < 21; i++)
361 dprintk("%02X:", hw->ATTR[i]);
362 dprintk("\n");
363
364 CRITBEGIN
365
366 mga_inb(M_ATTR_RESET);
367 mga_outb(M_ATTR_INDEX, 0);
368 mga_outb(M_MISC_REG, hw->MiscOutReg);
369 for (i = 1; i < 5; i++)
370 mga_setr(M_SEQ_INDEX, i, hw->SEQ[i]);
371 mga_setr(M_CRTC_INDEX, 17, hw->CRTC[17] & 0x7F);
372 for (i = 0; i < 25; i++)
373 mga_setr(M_CRTC_INDEX, i, hw->CRTC[i]);
374 for (i = 0; i < 9; i++)
375 mga_setr(M_GRAPHICS_INDEX, i, hw->GCTL[i]);
376 for (i = 0; i < 21; i++) {
377 mga_inb(M_ATTR_RESET);
378 mga_outb(M_ATTR_INDEX, i);
379 mga_outb(M_ATTR_INDEX, hw->ATTR[i]);
380 }
381 mga_outb(M_PALETTE_MASK, 0xFF);
382 mga_outb(M_DAC_REG, 0x00);
383 for (i = 0; i < 768; i++)
384 mga_outb(M_DAC_VAL, hw->DACpal[i]);
385 mga_inb(M_ATTR_RESET);
386 mga_outb(M_ATTR_INDEX, 0x20);
387
388 CRITEND
389 }
390
391 static void get_pins(unsigned char __iomem* pins, struct matrox_bios* bd) {
392 unsigned int b0 = readb(pins);
393
394 if (b0 == 0x2E && readb(pins+1) == 0x41) {
395 unsigned int pins_len = readb(pins+2);
396 unsigned int i;
397 unsigned char cksum;
398 unsigned char* dst = bd->pins;
399
400 if (pins_len < 3 || pins_len > 128) {
401 return;
402 }
403 *dst++ = 0x2E;
404 *dst++ = 0x41;
405 *dst++ = pins_len;
406 cksum = 0x2E + 0x41 + pins_len;
407 for (i = 3; i < pins_len; i++) {
408 cksum += *dst++ = readb(pins+i);
409 }
410 if (cksum) {
411 return;
412 }
413 bd->pins_len = pins_len;
414 } else if (b0 == 0x40 && readb(pins+1) == 0x00) {
415 unsigned int i;
416 unsigned char* dst = bd->pins;
417
418 *dst++ = 0x40;
419 *dst++ = 0;
420 for (i = 2; i < 0x40; i++) {
421 *dst++ = readb(pins+i);
422 }
423 bd->pins_len = 0x40;
424 }
425 }
426
427 static void get_bios_version(unsigned char __iomem * vbios, struct matrox_bios* bd) {
428 unsigned int pcir_offset;
429
430 pcir_offset = readb(vbios + 24) | (readb(vbios + 25) << 8);
431 if (pcir_offset >= 26 && pcir_offset < 0xFFE0 &&
432 readb(vbios + pcir_offset ) == 'P' &&
433 readb(vbios + pcir_offset + 1) == 'C' &&
434 readb(vbios + pcir_offset + 2) == 'I' &&
435 readb(vbios + pcir_offset + 3) == 'R') {
436 unsigned char h;
437
438 h = readb(vbios + pcir_offset + 0x12);
439 bd->version.vMaj = (h >> 4) & 0xF;
440 bd->version.vMin = h & 0xF;
441 bd->version.vRev = readb(vbios + pcir_offset + 0x13);
442 } else {
443 unsigned char h;
444
445 h = readb(vbios + 5);
446 bd->version.vMaj = (h >> 4) & 0xF;
447 bd->version.vMin = h & 0xF;
448 bd->version.vRev = 0;
449 }
450 }
451
452 static void get_bios_output(unsigned char __iomem* vbios, struct matrox_bios* bd) {
453 unsigned char b;
454
455 b = readb(vbios + 0x7FF1);
456 if (b == 0xFF) {
457 b = 0;
458 }
459 bd->output.state = b;
460 }
461
462 static void get_bios_tvout(unsigned char __iomem* vbios, struct matrox_bios* bd) {
463 unsigned int i;
464
465
466 bd->output.tvout = 0;
467 if (readb(vbios + 0x1D) != 'I' ||
468 readb(vbios + 0x1E) != 'B' ||
469 readb(vbios + 0x1F) != 'M' ||
470 readb(vbios + 0x20) != ' ') {
471 return;
472 }
473 for (i = 0x2D; i < 0x2D + 128; i++) {
474 unsigned char b = readb(vbios + i);
475
476 if (b == '(' && readb(vbios + i + 1) == 'V') {
477 if (readb(vbios + i + 6) == 'T' &&
478 readb(vbios + i + 7) == 'V' &&
479 readb(vbios + i + 8) == 'O') {
480 bd->output.tvout = 1;
481 }
482 return;
483 }
484 if (b == 0)
485 break;
486 }
487 }
488
489 static void parse_bios(unsigned char __iomem* vbios, struct matrox_bios* bd) {
490 unsigned int pins_offset;
491
492 if (readb(vbios) != 0x55 || readb(vbios + 1) != 0xAA) {
493 return;
494 }
495 bd->bios_valid = 1;
496 get_bios_version(vbios, bd);
497 get_bios_output(vbios, bd);
498 get_bios_tvout(vbios, bd);
499 #if defined(__powerpc__)
500
501
502
503
504
505
506
507
508 for ( pins_offset = 0 ; pins_offset <= 0xFF80 ; pins_offset++ ) {
509 unsigned char header[3];
510
511 header[0] = readb(vbios + pins_offset);
512 header[1] = readb(vbios + pins_offset + 1);
513 header[2] = readb(vbios + pins_offset + 2);
514 if ( (header[0] == 0x2E) && (header[1] == 0x41)
515 && ((header[2] == 0x40) || (header[2] == 0x80)) ) {
516 printk(KERN_INFO "PInS data found at offset %u\n",
517 pins_offset);
518 get_pins(vbios + pins_offset, bd);
519 break;
520 }
521 }
522 #else
523 pins_offset = readb(vbios + 0x7FFC) | (readb(vbios + 0x7FFD) << 8);
524 if (pins_offset <= 0xFF80) {
525 get_pins(vbios + pins_offset, bd);
526 }
527 #endif
528 }
529
530 static int parse_pins1(struct matrox_fb_info *minfo,
531 const struct matrox_bios *bd)
532 {
533 unsigned int maxdac;
534
535 switch (bd->pins[22]) {
536 case 0: maxdac = 175000; break;
537 case 1: maxdac = 220000; break;
538 default: maxdac = 240000; break;
539 }
540 if (get_unaligned_le16(bd->pins + 24)) {
541 maxdac = get_unaligned_le16(bd->pins + 24) * 10;
542 }
543 minfo->limits.pixel.vcomax = maxdac;
544 minfo->values.pll.system = get_unaligned_le16(bd->pins + 28) ?
545 get_unaligned_le16(bd->pins + 28) * 10 : 50000;
546
547 minfo->features.pll.ref_freq = 14318;
548 minfo->values.reg.mctlwtst = 0x00030101;
549 return 0;
550 }
551
552 static void default_pins1(struct matrox_fb_info *minfo)
553 {
554
555 minfo->limits.pixel.vcomax = 220000;
556 minfo->values.pll.system = 50000;
557 minfo->features.pll.ref_freq = 14318;
558 minfo->values.reg.mctlwtst = 0x00030101;
559 }
560
561 static int parse_pins2(struct matrox_fb_info *minfo,
562 const struct matrox_bios *bd)
563 {
564 minfo->limits.pixel.vcomax =
565 minfo->limits.system.vcomax = (bd->pins[41] == 0xFF) ? 230000 : ((bd->pins[41] + 100) * 1000);
566 minfo->values.reg.mctlwtst = ((bd->pins[51] & 0x01) ? 0x00000001 : 0) |
567 ((bd->pins[51] & 0x02) ? 0x00000100 : 0) |
568 ((bd->pins[51] & 0x04) ? 0x00010000 : 0) |
569 ((bd->pins[51] & 0x08) ? 0x00020000 : 0);
570 minfo->values.pll.system = (bd->pins[43] == 0xFF) ? 50000 : ((bd->pins[43] + 100) * 1000);
571 minfo->features.pll.ref_freq = 14318;
572 return 0;
573 }
574
575 static void default_pins2(struct matrox_fb_info *minfo)
576 {
577
578 minfo->limits.pixel.vcomax =
579 minfo->limits.system.vcomax = 230000;
580 minfo->values.reg.mctlwtst = 0x00030101;
581 minfo->values.pll.system = 50000;
582 minfo->features.pll.ref_freq = 14318;
583 }
584
585 static int parse_pins3(struct matrox_fb_info *minfo,
586 const struct matrox_bios *bd)
587 {
588 minfo->limits.pixel.vcomax =
589 minfo->limits.system.vcomax = (bd->pins[36] == 0xFF) ? 230000 : ((bd->pins[36] + 100) * 1000);
590 minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 48) == 0xFFFFFFFF ?
591 0x01250A21 : get_unaligned_le32(bd->pins + 48);
592
593 minfo->values.reg.memrdbk = ((bd->pins[57] << 21) & 0x1E000000) |
594 ((bd->pins[57] << 22) & 0x00C00000) |
595 ((bd->pins[56] << 1) & 0x000001E0) |
596 ( bd->pins[56] & 0x0000000F);
597 minfo->values.reg.opt = (bd->pins[54] & 7) << 10;
598 minfo->values.reg.opt2 = bd->pins[58] << 12;
599 minfo->features.pll.ref_freq = (bd->pins[52] & 0x20) ? 14318 : 27000;
600 return 0;
601 }
602
603 static void default_pins3(struct matrox_fb_info *minfo)
604 {
605
606 minfo->limits.pixel.vcomax =
607 minfo->limits.system.vcomax = 230000;
608 minfo->values.reg.mctlwtst = 0x01250A21;
609 minfo->values.reg.memrdbk = 0x00000000;
610 minfo->values.reg.opt = 0x00000C00;
611 minfo->values.reg.opt2 = 0x00000000;
612 minfo->features.pll.ref_freq = 27000;
613 }
614
615 static int parse_pins4(struct matrox_fb_info *minfo,
616 const struct matrox_bios *bd)
617 {
618 minfo->limits.pixel.vcomax = (bd->pins[ 39] == 0xFF) ? 230000 : bd->pins[ 39] * 4000;
619 minfo->limits.system.vcomax = (bd->pins[ 38] == 0xFF) ? minfo->limits.pixel.vcomax : bd->pins[ 38] * 4000;
620 minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 71);
621 minfo->values.reg.memrdbk = ((bd->pins[87] << 21) & 0x1E000000) |
622 ((bd->pins[87] << 22) & 0x00C00000) |
623 ((bd->pins[86] << 1) & 0x000001E0) |
624 ( bd->pins[86] & 0x0000000F);
625 minfo->values.reg.opt = ((bd->pins[53] << 15) & 0x00400000) |
626 ((bd->pins[53] << 22) & 0x10000000) |
627 ((bd->pins[53] << 7) & 0x00001C00);
628 minfo->values.reg.opt3 = get_unaligned_le32(bd->pins + 67);
629 minfo->values.pll.system = (bd->pins[ 65] == 0xFF) ? 200000 : bd->pins[ 65] * 4000;
630 minfo->features.pll.ref_freq = (bd->pins[ 92] & 0x01) ? 14318 : 27000;
631 return 0;
632 }
633
634 static void default_pins4(struct matrox_fb_info *minfo)
635 {
636
637 minfo->limits.pixel.vcomax =
638 minfo->limits.system.vcomax = 252000;
639 minfo->values.reg.mctlwtst = 0x04A450A1;
640 minfo->values.reg.memrdbk = 0x000000E7;
641 minfo->values.reg.opt = 0x10000400;
642 minfo->values.reg.opt3 = 0x0190A419;
643 minfo->values.pll.system = 200000;
644 minfo->features.pll.ref_freq = 27000;
645 }
646
647 static int parse_pins5(struct matrox_fb_info *minfo,
648 const struct matrox_bios *bd)
649 {
650 unsigned int mult;
651
652 mult = bd->pins[4]?8000:6000;
653
654 minfo->limits.pixel.vcomax = (bd->pins[ 38] == 0xFF) ? 600000 : bd->pins[ 38] * mult;
655 minfo->limits.system.vcomax = (bd->pins[ 36] == 0xFF) ? minfo->limits.pixel.vcomax : bd->pins[ 36] * mult;
656 minfo->limits.video.vcomax = (bd->pins[ 37] == 0xFF) ? minfo->limits.system.vcomax : bd->pins[ 37] * mult;
657 minfo->limits.pixel.vcomin = (bd->pins[123] == 0xFF) ? 256000 : bd->pins[123] * mult;
658 minfo->limits.system.vcomin = (bd->pins[121] == 0xFF) ? minfo->limits.pixel.vcomin : bd->pins[121] * mult;
659 minfo->limits.video.vcomin = (bd->pins[122] == 0xFF) ? minfo->limits.system.vcomin : bd->pins[122] * mult;
660 minfo->values.pll.system =
661 minfo->values.pll.video = (bd->pins[ 92] == 0xFF) ? 284000 : bd->pins[ 92] * 4000;
662 minfo->values.reg.opt = get_unaligned_le32(bd->pins + 48);
663 minfo->values.reg.opt2 = get_unaligned_le32(bd->pins + 52);
664 minfo->values.reg.opt3 = get_unaligned_le32(bd->pins + 94);
665 minfo->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 98);
666 minfo->values.reg.memmisc = get_unaligned_le32(bd->pins + 102);
667 minfo->values.reg.memrdbk = get_unaligned_le32(bd->pins + 106);
668 minfo->features.pll.ref_freq = (bd->pins[110] & 0x01) ? 14318 : 27000;
669 minfo->values.memory.ddr = (bd->pins[114] & 0x60) == 0x20;
670 minfo->values.memory.dll = (bd->pins[115] & 0x02) != 0;
671 minfo->values.memory.emrswen = (bd->pins[115] & 0x01) != 0;
672 minfo->values.reg.maccess = minfo->values.memory.emrswen ? 0x00004000 : 0x00000000;
673 if (bd->pins[115] & 4) {
674 minfo->values.reg.mctlwtst_core = minfo->values.reg.mctlwtst;
675 } else {
676 u_int32_t wtst_xlat[] = { 0, 1, 5, 6, 7, 5, 2, 3 };
677 minfo->values.reg.mctlwtst_core = (minfo->values.reg.mctlwtst & ~7) |
678 wtst_xlat[minfo->values.reg.mctlwtst & 7];
679 }
680 minfo->max_pixel_clock_panellink = bd->pins[47] * 4000;
681 return 0;
682 }
683
684 static void default_pins5(struct matrox_fb_info *minfo)
685 {
686
687 minfo->limits.pixel.vcomax =
688 minfo->limits.system.vcomax =
689 minfo->limits.video.vcomax = 600000;
690 minfo->limits.pixel.vcomin =
691 minfo->limits.system.vcomin =
692 minfo->limits.video.vcomin = 256000;
693 minfo->values.pll.system =
694 minfo->values.pll.video = 284000;
695 minfo->values.reg.opt = 0x404A1160;
696 minfo->values.reg.opt2 = 0x0000AC00;
697 minfo->values.reg.opt3 = 0x0090A409;
698 minfo->values.reg.mctlwtst_core =
699 minfo->values.reg.mctlwtst = 0x0C81462B;
700 minfo->values.reg.memmisc = 0x80000004;
701 minfo->values.reg.memrdbk = 0x01001103;
702 minfo->features.pll.ref_freq = 27000;
703 minfo->values.memory.ddr = 1;
704 minfo->values.memory.dll = 1;
705 minfo->values.memory.emrswen = 1;
706 minfo->values.reg.maccess = 0x00004000;
707 }
708
709 static int matroxfb_set_limits(struct matrox_fb_info *minfo,
710 const struct matrox_bios *bd)
711 {
712 unsigned int pins_version;
713 static const unsigned int pinslen[] = { 64, 64, 64, 128, 128 };
714
715 switch (minfo->chip) {
716 case MGA_2064: default_pins1(minfo); break;
717 case MGA_2164:
718 case MGA_1064:
719 case MGA_1164: default_pins2(minfo); break;
720 case MGA_G100:
721 case MGA_G200: default_pins3(minfo); break;
722 case MGA_G400: default_pins4(minfo); break;
723 case MGA_G450:
724 case MGA_G550: default_pins5(minfo); break;
725 }
726 if (!bd->bios_valid) {
727 printk(KERN_INFO "matroxfb: Your Matrox device does not have BIOS\n");
728 return -1;
729 }
730 if (bd->pins_len < 64) {
731 printk(KERN_INFO "matroxfb: BIOS on your Matrox device does not contain powerup info\n");
732 return -1;
733 }
734 if (bd->pins[0] == 0x2E && bd->pins[1] == 0x41) {
735 pins_version = bd->pins[5];
736 if (pins_version < 2 || pins_version > 5) {
737 printk(KERN_INFO "matroxfb: Unknown version (%u) of powerup info\n", pins_version);
738 return -1;
739 }
740 } else {
741 pins_version = 1;
742 }
743 if (bd->pins_len != pinslen[pins_version - 1]) {
744 printk(KERN_INFO "matroxfb: Invalid powerup info\n");
745 return -1;
746 }
747 switch (pins_version) {
748 case 1:
749 return parse_pins1(minfo, bd);
750 case 2:
751 return parse_pins2(minfo, bd);
752 case 3:
753 return parse_pins3(minfo, bd);
754 case 4:
755 return parse_pins4(minfo, bd);
756 case 5:
757 return parse_pins5(minfo, bd);
758 default:
759 printk(KERN_DEBUG "matroxfb: Powerup info version %u is not yet supported\n", pins_version);
760 return -1;
761 }
762 }
763
764 void matroxfb_read_pins(struct matrox_fb_info *minfo)
765 {
766 u32 opt;
767 u32 biosbase;
768 u32 fbbase;
769 struct pci_dev *pdev = minfo->pcidev;
770
771 memset(&minfo->bios, 0, sizeof(minfo->bios));
772 pci_read_config_dword(pdev, PCI_OPTION_REG, &opt);
773 pci_write_config_dword(pdev, PCI_OPTION_REG, opt | PCI_OPTION_ENABLE_ROM);
774 pci_read_config_dword(pdev, PCI_ROM_ADDRESS, &biosbase);
775 pci_read_config_dword(pdev, minfo->devflags.fbResource, &fbbase);
776 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, (fbbase & PCI_ROM_ADDRESS_MASK) | PCI_ROM_ADDRESS_ENABLE);
777 parse_bios(vaddr_va(minfo->video.vbase), &minfo->bios);
778 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, biosbase);
779 pci_write_config_dword(pdev, PCI_OPTION_REG, opt);
780 #ifdef CONFIG_X86
781 if (!minfo->bios.bios_valid) {
782 unsigned char __iomem* b;
783
784 b = ioremap(0x000C0000, 65536);
785 if (!b) {
786 printk(KERN_INFO "matroxfb: Unable to map legacy BIOS\n");
787 } else {
788 unsigned int ven = readb(b+0x64+0) | (readb(b+0x64+1) << 8);
789 unsigned int dev = readb(b+0x64+2) | (readb(b+0x64+3) << 8);
790
791 if (ven != pdev->vendor || dev != pdev->device) {
792 printk(KERN_INFO "matroxfb: Legacy BIOS is for %04X:%04X, while this device is %04X:%04X\n",
793 ven, dev, pdev->vendor, pdev->device);
794 } else {
795 parse_bios(b, &minfo->bios);
796 }
797 iounmap(b);
798 }
799 }
800 #endif
801 matroxfb_set_limits(minfo, &minfo->bios);
802 printk(KERN_INFO "PInS memtype = %u\n",
803 (minfo->values.reg.opt & 0x1C00) >> 10);
804 }
805
806 EXPORT_SYMBOL(matroxfb_DAC_in);
807 EXPORT_SYMBOL(matroxfb_DAC_out);
808 EXPORT_SYMBOL(matroxfb_var2my);
809 EXPORT_SYMBOL(matroxfb_PLL_calcclock);
810 EXPORT_SYMBOL(matroxfb_vgaHWinit);
811 EXPORT_SYMBOL(matroxfb_vgaHWrestore);
812 EXPORT_SYMBOL(matroxfb_read_pins);
813
814 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
815 MODULE_DESCRIPTION("Miscellaneous support for Matrox video cards");
816 MODULE_LICENSE("GPL");