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ide: trivial sparse annotations
[linux-2.6/pdupreez.git] / drivers / video / matrox / matroxfb_misc.c
blob5b5f072fc1a818f57ec989daaac4c0afef79ddb4
1 /*
2 *
3 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
4 *
5 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
6 *
7 * Portions Copyright (c) 2001 Matrox Graphics Inc.
8 *
9 * Version: 1.65 2002/08/14
10 *
11 * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
12 *
13 * Contributors: "menion?" <menion@mindless.com>
14 * Betatesting, fixes, ideas
15 *
16 * "Kurt Garloff" <garloff@suse.de>
17 * Betatesting, fixes, ideas, videomodes, videomodes timmings
18 *
19 * "Tom Rini" <trini@kernel.crashing.org>
20 * MTRR stuff, PPC cleanups, betatesting, fixes, ideas
21 *
22 * "Bibek Sahu" <scorpio@dodds.net>
23 * Access device through readb|w|l and write b|w|l
24 * Extensive debugging stuff
25 *
26 * "Daniel Haun" <haund@usa.net>
27 * Testing, hardware cursor fixes
28 *
29 * "Scott Wood" <sawst46+@pitt.edu>
30 * Fixes
31 *
32 * "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
33 * Betatesting
34 *
35 * "Kelly French" <targon@hazmat.com>
36 * "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
37 * Betatesting, bug reporting
38 *
39 * "Pablo Bianucci" <pbian@pccp.com.ar>
40 * Fixes, ideas, betatesting
41 *
42 * "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
43 * Fixes, enhandcements, ideas, betatesting
44 *
45 * "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
46 * PPC betatesting, PPC support, backward compatibility
47 *
48 * "Paul Womar" <Paul@pwomar.demon.co.uk>
49 * "Owen Waller" <O.Waller@ee.qub.ac.uk>
50 * PPC betatesting
51 *
52 * "Thomas Pornin" <pornin@bolet.ens.fr>
53 * Alpha betatesting
54 *
55 * "Pieter van Leuven" <pvl@iae.nl>
56 * "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
57 * G100 testing
58 *
59 * "H. Peter Arvin" <hpa@transmeta.com>
60 * Ideas
61 *
62 * "Cort Dougan" <cort@cs.nmt.edu>
63 * CHRP fixes and PReP cleanup
64 *
65 * "Mark Vojkovich" <mvojkovi@ucsd.edu>
66 * G400 support
67 *
68 * "David C. Hansen" <haveblue@us.ibm.com>
69 * Fixes
70 *
71 * "Ian Romanick" <idr@us.ibm.com>
72 * Find PInS data in BIOS on PowerPC systems.
73 *
74 * (following author is not in any relation with this code, but his code
75 * is included in this driver)
76 *
77 * Based on framebuffer driver for VBE 2.0 compliant graphic boards
78 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
79 *
80 * (following author is not in any relation with this code, but his ideas
81 * were used when writing this driver)
82 *
83 * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
84 *
85 */
86
87
88 #include "matroxfb_misc.h"
89 #include <linux/interrupt.h>
90 #include <linux/matroxfb.h>
91
92 void matroxfb_DAC_out(CPMINFO int reg, int val) {
93 DBG_REG(__func__)
94 mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
95 mga_outb(M_RAMDAC_BASE+M_X_DATAREG, val);
96 }
97
98 int matroxfb_DAC_in(CPMINFO int reg) {
99 DBG_REG(__func__)
100 mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
101 return mga_inb(M_RAMDAC_BASE+M_X_DATAREG);
102 }
103
104 void matroxfb_var2my(struct fb_var_screeninfo* var, struct my_timming* mt) {
105 unsigned int pixclock = var->pixclock;
106
107 DBG(__func__)
108
109 if (!pixclock) pixclock = 10000; /* 10ns = 100MHz */
110 mt->pixclock = 1000000000 / pixclock;
111 if (mt->pixclock < 1) mt->pixclock = 1;
112 mt->mnp = -1;
113 mt->dblscan = var->vmode & FB_VMODE_DOUBLE;
114 mt->interlaced = var->vmode & FB_VMODE_INTERLACED;
115 mt->HDisplay = var->xres;
116 mt->HSyncStart = mt->HDisplay + var->right_margin;
117 mt->HSyncEnd = mt->HSyncStart + var->hsync_len;
118 mt->HTotal = mt->HSyncEnd + var->left_margin;
119 mt->VDisplay = var->yres;
120 mt->VSyncStart = mt->VDisplay + var->lower_margin;
121 mt->VSyncEnd = mt->VSyncStart + var->vsync_len;
122 mt->VTotal = mt->VSyncEnd + var->upper_margin;
123 mt->sync = var->sync;
124 }
125
126 int matroxfb_PLL_calcclock(const struct matrox_pll_features* pll, unsigned int freq, unsigned int fmax,
127 unsigned int* in, unsigned int* feed, unsigned int* post) {
128 unsigned int bestdiff = ~0;
129 unsigned int bestvco = 0;
130 unsigned int fxtal = pll->ref_freq;
131 unsigned int fwant;
132 unsigned int p;
133
134 DBG(__func__)
135
136 fwant = freq;
137
138 #ifdef DEBUG
139 printk(KERN_ERR "post_shift_max: %d\n", pll->post_shift_max);
140 printk(KERN_ERR "ref_freq: %d\n", pll->ref_freq);
141 printk(KERN_ERR "freq: %d\n", freq);
142 printk(KERN_ERR "vco_freq_min: %d\n", pll->vco_freq_min);
143 printk(KERN_ERR "in_div_min: %d\n", pll->in_div_min);
144 printk(KERN_ERR "in_div_max: %d\n", pll->in_div_max);
145 printk(KERN_ERR "feed_div_min: %d\n", pll->feed_div_min);
146 printk(KERN_ERR "feed_div_max: %d\n", pll->feed_div_max);
147 printk(KERN_ERR "fmax: %d\n", fmax);
148 #endif
149 for (p = 1; p <= pll->post_shift_max; p++) {
150 if (fwant * 2 > fmax)
151 break;
152 fwant *= 2;
153 }
154 if (fwant < pll->vco_freq_min) fwant = pll->vco_freq_min;
155 if (fwant > fmax) fwant = fmax;
156 for (; p-- > 0; fwant >>= 1, bestdiff >>= 1) {
157 unsigned int m;
158
159 if (fwant < pll->vco_freq_min) break;
160 for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
161 unsigned int diff, fvco;
162 unsigned int n;
163
164 n = (fwant * (m + 1) + (fxtal >> 1)) / fxtal - 1;
165 if (n > pll->feed_div_max)
166 break;
167 if (n < pll->feed_div_min)
168 n = pll->feed_div_min;
169 fvco = (fxtal * (n + 1)) / (m + 1);
170 if (fvco < fwant)
171 diff = fwant - fvco;
172 else
173 diff = fvco - fwant;
174 if (diff < bestdiff) {
175 bestdiff = diff;
176 *post = p;
177 *in = m;
178 *feed = n;
179 bestvco = fvco;
180 }
181 }
182 }
183 dprintk(KERN_ERR "clk: %02X %02X %02X %d %d %d\n", *in, *feed, *post, fxtal, bestvco, fwant);
184 return bestvco;
185 }
186
187 int matroxfb_vgaHWinit(WPMINFO struct my_timming* m) {
188 unsigned int hd, hs, he, hbe, ht;
189 unsigned int vd, vs, ve, vt, lc;
190 unsigned int wd;
191 unsigned int divider;
192 int i;
193 struct matrox_hw_state * const hw = &ACCESS_FBINFO(hw);
194
195 DBG(__func__)
196
197 hw->SEQ[0] = 0x00;
198 hw->SEQ[1] = 0x01; /* or 0x09 */
199 hw->SEQ[2] = 0x0F; /* bitplanes */
200 hw->SEQ[3] = 0x00;
201 hw->SEQ[4] = 0x0E;
202 /* CRTC 0..7, 9, 16..19, 21, 22 are reprogrammed by Matrox Millennium code... Hope that by MGA1064 too */
203 if (m->dblscan) {
204 m->VTotal <<= 1;
205 m->VDisplay <<= 1;
206 m->VSyncStart <<= 1;
207 m->VSyncEnd <<= 1;
208 }
209 if (m->interlaced) {
210 m->VTotal >>= 1;
211 m->VDisplay >>= 1;
212 m->VSyncStart >>= 1;
213 m->VSyncEnd >>= 1;
214 }
215
216 /* GCTL is ignored when not using 0xA0000 aperture */
217 hw->GCTL[0] = 0x00;
218 hw->GCTL[1] = 0x00;
219 hw->GCTL[2] = 0x00;
220 hw->GCTL[3] = 0x00;
221 hw->GCTL[4] = 0x00;
222 hw->GCTL[5] = 0x40;
223 hw->GCTL[6] = 0x05;
224 hw->GCTL[7] = 0x0F;
225 hw->GCTL[8] = 0xFF;
226
227 /* Whole ATTR is ignored in PowerGraphics mode */
228 for (i = 0; i < 16; i++)
229 hw->ATTR[i] = i;
230 hw->ATTR[16] = 0x41;
231 hw->ATTR[17] = 0xFF;
232 hw->ATTR[18] = 0x0F;
233 hw->ATTR[19] = 0x00;
234 hw->ATTR[20] = 0x00;
235
236 hd = m->HDisplay >> 3;
237 hs = m->HSyncStart >> 3;
238 he = m->HSyncEnd >> 3;
239 ht = m->HTotal >> 3;
240 /* standard timmings are in 8pixels, but for interleaved we cannot */
241 /* do it for 4bpp (because of (4bpp >> 1(interleaved))/4 == 0) */
242 /* using 16 or more pixels per unit can save us */
243 divider = ACCESS_FBINFO(curr.final_bppShift);
244 while (divider & 3) {
245 hd >>= 1;
246 hs >>= 1;
247 he >>= 1;
248 ht >>= 1;
249 divider <<= 1;
250 }
251 divider = divider / 4;
252 /* divider can be from 1 to 8 */
253 while (divider > 8) {
254 hd <<= 1;
255 hs <<= 1;
256 he <<= 1;
257 ht <<= 1;
258 divider >>= 1;
259 }
260 hd = hd - 1;
261 hs = hs - 1;
262 he = he - 1;
263 ht = ht - 1;
264 vd = m->VDisplay - 1;
265 vs = m->VSyncStart - 1;
266 ve = m->VSyncEnd - 1;
267 vt = m->VTotal - 2;
268 lc = vd;
269 /* G200 cannot work with (ht & 7) == 6 */
270 if (((ht & 0x07) == 0x06) || ((ht & 0x0F) == 0x04))
271 ht++;
272 hbe = ht;
273 wd = ACCESS_FBINFO(fbcon).var.xres_virtual * ACCESS_FBINFO(curr.final_bppShift) / 64;
274
275 hw->CRTCEXT[0] = 0;
276 hw->CRTCEXT[5] = 0;
277 if (m->interlaced) {
278 hw->CRTCEXT[0] = 0x80;
279 hw->CRTCEXT[5] = (hs + he - ht) >> 1;
280 if (!m->dblscan)
281 wd <<= 1;
282 vt &= ~1;
283 }
284 hw->CRTCEXT[0] |= (wd & 0x300) >> 4;
285 hw->CRTCEXT[1] = (((ht - 4) & 0x100) >> 8) |
286 ((hd & 0x100) >> 7) | /* blanking */
287 ((hs & 0x100) >> 6) | /* sync start */
288 (hbe & 0x040); /* end hor. blanking */
289 /* FIXME: Enable vidrst only on G400, and only if TV-out is used */
290 if (ACCESS_FBINFO(outputs[1]).src == MATROXFB_SRC_CRTC1)
291 hw->CRTCEXT[1] |= 0x88; /* enable horizontal and vertical vidrst */
292 hw->CRTCEXT[2] = ((vt & 0xC00) >> 10) |
293 ((vd & 0x400) >> 8) | /* disp end */
294 ((vd & 0xC00) >> 7) | /* vblanking start */
295 ((vs & 0xC00) >> 5) |
296 ((lc & 0x400) >> 3);
297 hw->CRTCEXT[3] = (divider - 1) | 0x80;
298 hw->CRTCEXT[4] = 0;
299
300 hw->CRTC[0] = ht-4;
301 hw->CRTC[1] = hd;
302 hw->CRTC[2] = hd;
303 hw->CRTC[3] = (hbe & 0x1F) | 0x80;
304 hw->CRTC[4] = hs;
305 hw->CRTC[5] = ((hbe & 0x20) << 2) | (he & 0x1F);
306 hw->CRTC[6] = vt & 0xFF;
307 hw->CRTC[7] = ((vt & 0x100) >> 8) |
308 ((vd & 0x100) >> 7) |
309 ((vs & 0x100) >> 6) |
310 ((vd & 0x100) >> 5) |
311 ((lc & 0x100) >> 4) |
312 ((vt & 0x200) >> 4) |
313 ((vd & 0x200) >> 3) |
314 ((vs & 0x200) >> 2);
315 hw->CRTC[8] = 0x00;
316 hw->CRTC[9] = ((vd & 0x200) >> 4) |
317 ((lc & 0x200) >> 3);
318 if (m->dblscan && !m->interlaced)
319 hw->CRTC[9] |= 0x80;
320 for (i = 10; i < 16; i++)
321 hw->CRTC[i] = 0x00;
322 hw->CRTC[16] = vs /* & 0xFF */;
323 hw->CRTC[17] = (ve & 0x0F) | 0x20;
324 hw->CRTC[18] = vd /* & 0xFF */;
325 hw->CRTC[19] = wd /* & 0xFF */;
326 hw->CRTC[20] = 0x00;
327 hw->CRTC[21] = vd /* & 0xFF */;
328 hw->CRTC[22] = (vt + 1) /* & 0xFF */;
329 hw->CRTC[23] = 0xC3;
330 hw->CRTC[24] = lc;
331 return 0;
332 };
333
334 void matroxfb_vgaHWrestore(WPMINFO2) {
335 int i;
336 struct matrox_hw_state * const hw = &ACCESS_FBINFO(hw);
337 CRITFLAGS
338
339 DBG(__func__)
340
341 dprintk(KERN_INFO "MiscOutReg: %02X\n", hw->MiscOutReg);
342 dprintk(KERN_INFO "SEQ regs: ");
343 for (i = 0; i < 5; i++)
344 dprintk("%02X:", hw->SEQ[i]);
345 dprintk("\n");
346 dprintk(KERN_INFO "GDC regs: ");
347 for (i = 0; i < 9; i++)
348 dprintk("%02X:", hw->GCTL[i]);
349 dprintk("\n");
350 dprintk(KERN_INFO "CRTC regs: ");
351 for (i = 0; i < 25; i++)
352 dprintk("%02X:", hw->CRTC[i]);
353 dprintk("\n");
354 dprintk(KERN_INFO "ATTR regs: ");
355 for (i = 0; i < 21; i++)
356 dprintk("%02X:", hw->ATTR[i]);
357 dprintk("\n");
358
359 CRITBEGIN
360
361 mga_inb(M_ATTR_RESET);
362 mga_outb(M_ATTR_INDEX, 0);
363 mga_outb(M_MISC_REG, hw->MiscOutReg);
364 for (i = 1; i < 5; i++)
365 mga_setr(M_SEQ_INDEX, i, hw->SEQ[i]);
366 mga_setr(M_CRTC_INDEX, 17, hw->CRTC[17] & 0x7F);
367 for (i = 0; i < 25; i++)
368 mga_setr(M_CRTC_INDEX, i, hw->CRTC[i]);
369 for (i = 0; i < 9; i++)
370 mga_setr(M_GRAPHICS_INDEX, i, hw->GCTL[i]);
371 for (i = 0; i < 21; i++) {
372 mga_inb(M_ATTR_RESET);
373 mga_outb(M_ATTR_INDEX, i);
374 mga_outb(M_ATTR_INDEX, hw->ATTR[i]);
375 }
376 mga_outb(M_PALETTE_MASK, 0xFF);
377 mga_outb(M_DAC_REG, 0x00);
378 for (i = 0; i < 768; i++)
379 mga_outb(M_DAC_VAL, hw->DACpal[i]);
380 mga_inb(M_ATTR_RESET);
381 mga_outb(M_ATTR_INDEX, 0x20);
382
383 CRITEND
384 }
385
386 static void get_pins(unsigned char __iomem* pins, struct matrox_bios* bd) {
387 unsigned int b0 = readb(pins);
388
389 if (b0 == 0x2E && readb(pins+1) == 0x41) {
390 unsigned int pins_len = readb(pins+2);
391 unsigned int i;
392 unsigned char cksum;
393 unsigned char* dst = bd->pins;
394
395 if (pins_len < 3 || pins_len > 128) {
396 return;
397 }
398 *dst++ = 0x2E;
399 *dst++ = 0x41;
400 *dst++ = pins_len;
401 cksum = 0x2E + 0x41 + pins_len;
402 for (i = 3; i < pins_len; i++) {
403 cksum += *dst++ = readb(pins+i);
404 }
405 if (cksum) {
406 return;
407 }
408 bd->pins_len = pins_len;
409 } else if (b0 == 0x40 && readb(pins+1) == 0x00) {
410 unsigned int i;
411 unsigned char* dst = bd->pins;
412
413 *dst++ = 0x40;
414 *dst++ = 0;
415 for (i = 2; i < 0x40; i++) {
416 *dst++ = readb(pins+i);
417 }
418 bd->pins_len = 0x40;
419 }
420 }
421
422 static void get_bios_version(unsigned char __iomem * vbios, struct matrox_bios* bd) {
423 unsigned int pcir_offset;
424
425 pcir_offset = readb(vbios + 24) | (readb(vbios + 25) << 8);
426 if (pcir_offset >= 26 && pcir_offset < 0xFFE0 &&
427 readb(vbios + pcir_offset ) == 'P' &&
428 readb(vbios + pcir_offset + 1) == 'C' &&
429 readb(vbios + pcir_offset + 2) == 'I' &&
430 readb(vbios + pcir_offset + 3) == 'R') {
431 unsigned char h;
432
433 h = readb(vbios + pcir_offset + 0x12);
434 bd->version.vMaj = (h >> 4) & 0xF;
435 bd->version.vMin = h & 0xF;
436 bd->version.vRev = readb(vbios + pcir_offset + 0x13);
437 } else {
438 unsigned char h;
439
440 h = readb(vbios + 5);
441 bd->version.vMaj = (h >> 4) & 0xF;
442 bd->version.vMin = h & 0xF;
443 bd->version.vRev = 0;
444 }
445 }
446
447 static void get_bios_output(unsigned char __iomem* vbios, struct matrox_bios* bd) {
448 unsigned char b;
449
450 b = readb(vbios + 0x7FF1);
451 if (b == 0xFF) {
452 b = 0;
453 }
454 bd->output.state = b;
455 }
456
457 static void get_bios_tvout(unsigned char __iomem* vbios, struct matrox_bios* bd) {
458 unsigned int i;
459
460 /* Check for 'IBM .*(V....TVO' string - it means TVO BIOS */
461 bd->output.tvout = 0;
462 if (readb(vbios + 0x1D) != 'I' ||
463 readb(vbios + 0x1E) != 'B' ||
464 readb(vbios + 0x1F) != 'M' ||
465 readb(vbios + 0x20) != ' ') {
466 return;
467 }
468 for (i = 0x2D; i < 0x2D + 128; i++) {
469 unsigned char b = readb(vbios + i);
470
471 if (b == '(' && readb(vbios + i + 1) == 'V') {
472 if (readb(vbios + i + 6) == 'T' &&
473 readb(vbios + i + 7) == 'V' &&
474 readb(vbios + i + 8) == 'O') {
475 bd->output.tvout = 1;
476 }
477 return;
478 }
479 if (b == 0)
480 break;
481 }
482 }
483
484 static void parse_bios(unsigned char __iomem* vbios, struct matrox_bios* bd) {
485 unsigned int pins_offset;
486
487 if (readb(vbios) != 0x55 || readb(vbios + 1) != 0xAA) {
488 return;
489 }
490 bd->bios_valid = 1;
491 get_bios_version(vbios, bd);
492 get_bios_output(vbios, bd);
493 get_bios_tvout(vbios, bd);
494 #if defined(__powerpc__)
495 /* On PowerPC cards, the PInS offset isn't stored at the end of the
496 * BIOS image. Instead, you must search the entire BIOS image for
497 * the magic PInS signature.
498 *
499 * This actually applies to all OpenFirmware base cards. Since these
500 * cards could be put in a MIPS or SPARC system, should the condition
501 * be something different?
502 */
503 for ( pins_offset = 0 ; pins_offset <= 0xFF80 ; pins_offset++ ) {
504 unsigned char header[3];
505
506 header[0] = readb(vbios + pins_offset);
507 header[1] = readb(vbios + pins_offset + 1);
508 header[2] = readb(vbios + pins_offset + 2);
509 if ( (header[0] == 0x2E) && (header[1] == 0x41)
510 && ((header[2] == 0x40) || (header[2] == 0x80)) ) {
511 printk(KERN_INFO "PInS data found at offset %u\n",
512 pins_offset);
513 get_pins(vbios + pins_offset, bd);
514 break;
515 }
516 }
517 #else
518 pins_offset = readb(vbios + 0x7FFC) | (readb(vbios + 0x7FFD) << 8);
519 if (pins_offset <= 0xFF80) {
520 get_pins(vbios + pins_offset, bd);
521 }
522 #endif
523 }
524
525 static int parse_pins1(WPMINFO const struct matrox_bios* bd) {
526 unsigned int maxdac;
527
528 switch (bd->pins[22]) {
529 case 0: maxdac = 175000; break;
530 case 1: maxdac = 220000; break;
531 default: maxdac = 240000; break;
532 }
533 if (get_unaligned_le16(bd->pins + 24)) {
534 maxdac = get_unaligned_le16(bd->pins + 24) * 10;
535 }
536 MINFO->limits.pixel.vcomax = maxdac;
537 MINFO->values.pll.system = get_unaligned_le16(bd->pins + 28) ?
538 get_unaligned_le16(bd->pins + 28) * 10 : 50000;
539 /* ignore 4MB, 8MB, module clocks */
540 MINFO->features.pll.ref_freq = 14318;
541 MINFO->values.reg.mctlwtst = 0x00030101;
542 return 0;
543 }
544
545 static void default_pins1(WPMINFO2) {
546 /* Millennium */
547 MINFO->limits.pixel.vcomax = 220000;
548 MINFO->values.pll.system = 50000;
549 MINFO->features.pll.ref_freq = 14318;
550 MINFO->values.reg.mctlwtst = 0x00030101;
551 }
552
553 static int parse_pins2(WPMINFO const struct matrox_bios* bd) {
554 MINFO->limits.pixel.vcomax =
555 MINFO->limits.system.vcomax = (bd->pins[41] == 0xFF) ? 230000 : ((bd->pins[41] + 100) * 1000);
556 MINFO->values.reg.mctlwtst = ((bd->pins[51] & 0x01) ? 0x00000001 : 0) |
557 ((bd->pins[51] & 0x02) ? 0x00000100 : 0) |
558 ((bd->pins[51] & 0x04) ? 0x00010000 : 0) |
559 ((bd->pins[51] & 0x08) ? 0x00020000 : 0);
560 MINFO->values.pll.system = (bd->pins[43] == 0xFF) ? 50000 : ((bd->pins[43] + 100) * 1000);
561 MINFO->features.pll.ref_freq = 14318;
562 return 0;
563 }
564
565 static void default_pins2(WPMINFO2) {
566 /* Millennium II, Mystique */
567 MINFO->limits.pixel.vcomax =
568 MINFO->limits.system.vcomax = 230000;
569 MINFO->values.reg.mctlwtst = 0x00030101;
570 MINFO->values.pll.system = 50000;
571 MINFO->features.pll.ref_freq = 14318;
572 }
573
574 static int parse_pins3(WPMINFO const struct matrox_bios* bd) {
575 MINFO->limits.pixel.vcomax =
576 MINFO->limits.system.vcomax = (bd->pins[36] == 0xFF) ? 230000 : ((bd->pins[36] + 100) * 1000);
577 MINFO->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 48) == 0xFFFFFFFF ?
578 0x01250A21 : get_unaligned_le32(bd->pins + 48);
579 /* memory config */
580 MINFO->values.reg.memrdbk = ((bd->pins[57] << 21) & 0x1E000000) |
581 ((bd->pins[57] << 22) & 0x00C00000) |
582 ((bd->pins[56] << 1) & 0x000001E0) |
583 ( bd->pins[56] & 0x0000000F);
584 MINFO->values.reg.opt = (bd->pins[54] & 7) << 10;
585 MINFO->values.reg.opt2 = bd->pins[58] << 12;
586 MINFO->features.pll.ref_freq = (bd->pins[52] & 0x20) ? 14318 : 27000;
587 return 0;
588 }
589
590 static void default_pins3(WPMINFO2) {
591 /* G100, G200 */
592 MINFO->limits.pixel.vcomax =
593 MINFO->limits.system.vcomax = 230000;
594 MINFO->values.reg.mctlwtst = 0x01250A21;
595 MINFO->values.reg.memrdbk = 0x00000000;
596 MINFO->values.reg.opt = 0x00000C00;
597 MINFO->values.reg.opt2 = 0x00000000;
598 MINFO->features.pll.ref_freq = 27000;
599 }
600
601 static int parse_pins4(WPMINFO const struct matrox_bios* bd) {
602 MINFO->limits.pixel.vcomax = (bd->pins[ 39] == 0xFF) ? 230000 : bd->pins[ 39] * 4000;
603 MINFO->limits.system.vcomax = (bd->pins[ 38] == 0xFF) ? MINFO->limits.pixel.vcomax : bd->pins[ 38] * 4000;
604 MINFO->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 71);
605 MINFO->values.reg.memrdbk = ((bd->pins[87] << 21) & 0x1E000000) |
606 ((bd->pins[87] << 22) & 0x00C00000) |
607 ((bd->pins[86] << 1) & 0x000001E0) |
608 ( bd->pins[86] & 0x0000000F);
609 MINFO->values.reg.opt = ((bd->pins[53] << 15) & 0x00400000) |
610 ((bd->pins[53] << 22) & 0x10000000) |
611 ((bd->pins[53] << 7) & 0x00001C00);
612 MINFO->values.reg.opt3 = get_unaligned_le32(bd->pins + 67);
613 MINFO->values.pll.system = (bd->pins[ 65] == 0xFF) ? 200000 : bd->pins[ 65] * 4000;
614 MINFO->features.pll.ref_freq = (bd->pins[ 92] & 0x01) ? 14318 : 27000;
615 return 0;
616 }
617
618 static void default_pins4(WPMINFO2) {
619 /* G400 */
620 MINFO->limits.pixel.vcomax =
621 MINFO->limits.system.vcomax = 252000;
622 MINFO->values.reg.mctlwtst = 0x04A450A1;
623 MINFO->values.reg.memrdbk = 0x000000E7;
624 MINFO->values.reg.opt = 0x10000400;
625 MINFO->values.reg.opt3 = 0x0190A419;
626 MINFO->values.pll.system = 200000;
627 MINFO->features.pll.ref_freq = 27000;
628 }
629
630 static int parse_pins5(WPMINFO const struct matrox_bios* bd) {
631 unsigned int mult;
632
633 mult = bd->pins[4]?8000:6000;
634
635 MINFO->limits.pixel.vcomax = (bd->pins[ 38] == 0xFF) ? 600000 : bd->pins[ 38] * mult;
636 MINFO->limits.system.vcomax = (bd->pins[ 36] == 0xFF) ? MINFO->limits.pixel.vcomax : bd->pins[ 36] * mult;
637 MINFO->limits.video.vcomax = (bd->pins[ 37] == 0xFF) ? MINFO->limits.system.vcomax : bd->pins[ 37] * mult;
638 MINFO->limits.pixel.vcomin = (bd->pins[123] == 0xFF) ? 256000 : bd->pins[123] * mult;
639 MINFO->limits.system.vcomin = (bd->pins[121] == 0xFF) ? MINFO->limits.pixel.vcomin : bd->pins[121] * mult;
640 MINFO->limits.video.vcomin = (bd->pins[122] == 0xFF) ? MINFO->limits.system.vcomin : bd->pins[122] * mult;
641 MINFO->values.pll.system =
642 MINFO->values.pll.video = (bd->pins[ 92] == 0xFF) ? 284000 : bd->pins[ 92] * 4000;
643 MINFO->values.reg.opt = get_unaligned_le32(bd->pins + 48);
644 MINFO->values.reg.opt2 = get_unaligned_le32(bd->pins + 52);
645 MINFO->values.reg.opt3 = get_unaligned_le32(bd->pins + 94);
646 MINFO->values.reg.mctlwtst = get_unaligned_le32(bd->pins + 98);
647 MINFO->values.reg.memmisc = get_unaligned_le32(bd->pins + 102);
648 MINFO->values.reg.memrdbk = get_unaligned_le32(bd->pins + 106);
649 MINFO->features.pll.ref_freq = (bd->pins[110] & 0x01) ? 14318 : 27000;
650 MINFO->values.memory.ddr = (bd->pins[114] & 0x60) == 0x20;
651 MINFO->values.memory.dll = (bd->pins[115] & 0x02) != 0;
652 MINFO->values.memory.emrswen = (bd->pins[115] & 0x01) != 0;
653 MINFO->values.reg.maccess = MINFO->values.memory.emrswen ? 0x00004000 : 0x00000000;
654 if (bd->pins[115] & 4) {
655 MINFO->values.reg.mctlwtst_core = MINFO->values.reg.mctlwtst;
656 } else {
657 u_int32_t wtst_xlat[] = { 0, 1, 5, 6, 7, 5, 2, 3 };
658 MINFO->values.reg.mctlwtst_core = (MINFO->values.reg.mctlwtst & ~7) |
659 wtst_xlat[MINFO->values.reg.mctlwtst & 7];
660 }
661 MINFO->max_pixel_clock_panellink = bd->pins[47] * 4000;
662 return 0;
663 }
664
665 static void default_pins5(WPMINFO2) {
666 /* Mine 16MB G450 with SDRAM DDR */
667 MINFO->limits.pixel.vcomax =
668 MINFO->limits.system.vcomax =
669 MINFO->limits.video.vcomax = 600000;
670 MINFO->limits.pixel.vcomin =
671 MINFO->limits.system.vcomin =
672 MINFO->limits.video.vcomin = 256000;
673 MINFO->values.pll.system =
674 MINFO->values.pll.video = 284000;
675 MINFO->values.reg.opt = 0x404A1160;
676 MINFO->values.reg.opt2 = 0x0000AC00;
677 MINFO->values.reg.opt3 = 0x0090A409;
678 MINFO->values.reg.mctlwtst_core =
679 MINFO->values.reg.mctlwtst = 0x0C81462B;
680 MINFO->values.reg.memmisc = 0x80000004;
681 MINFO->values.reg.memrdbk = 0x01001103;
682 MINFO->features.pll.ref_freq = 27000;
683 MINFO->values.memory.ddr = 1;
684 MINFO->values.memory.dll = 1;
685 MINFO->values.memory.emrswen = 1;
686 MINFO->values.reg.maccess = 0x00004000;
687 }
688
689 static int matroxfb_set_limits(WPMINFO const struct matrox_bios* bd) {
690 unsigned int pins_version;
691 static const unsigned int pinslen[] = { 64, 64, 64, 128, 128 };
692
693 switch (ACCESS_FBINFO(chip)) {
694 case MGA_2064: default_pins1(PMINFO2); break;
695 case MGA_2164:
696 case MGA_1064:
697 case MGA_1164: default_pins2(PMINFO2); break;
698 case MGA_G100:
699 case MGA_G200: default_pins3(PMINFO2); break;
700 case MGA_G400: default_pins4(PMINFO2); break;
701 case MGA_G450:
702 case MGA_G550: default_pins5(PMINFO2); break;
703 }
704 if (!bd->bios_valid) {
705 printk(KERN_INFO "matroxfb: Your Matrox device does not have BIOS\n");
706 return -1;
707 }
708 if (bd->pins_len < 64) {
709 printk(KERN_INFO "matroxfb: BIOS on your Matrox device does not contain powerup info\n");
710 return -1;
711 }
712 if (bd->pins[0] == 0x2E && bd->pins[1] == 0x41) {
713 pins_version = bd->pins[5];
714 if (pins_version < 2 || pins_version > 5) {
715 printk(KERN_INFO "matroxfb: Unknown version (%u) of powerup info\n", pins_version);
716 return -1;
717 }
718 } else {
719 pins_version = 1;
720 }
721 if (bd->pins_len != pinslen[pins_version - 1]) {
722 printk(KERN_INFO "matroxfb: Invalid powerup info\n");
723 return -1;
724 }
725 switch (pins_version) {
726 case 1:
727 return parse_pins1(PMINFO bd);
728 case 2:
729 return parse_pins2(PMINFO bd);
730 case 3:
731 return parse_pins3(PMINFO bd);
732 case 4:
733 return parse_pins4(PMINFO bd);
734 case 5:
735 return parse_pins5(PMINFO bd);
736 default:
737 printk(KERN_DEBUG "matroxfb: Powerup info version %u is not yet supported\n", pins_version);
738 return -1;
739 }
740 }
741
742 void matroxfb_read_pins(WPMINFO2) {
743 u32 opt;
744 u32 biosbase;
745 u32 fbbase;
746 struct pci_dev* pdev = ACCESS_FBINFO(pcidev);
747
748 memset(&ACCESS_FBINFO(bios), 0, sizeof(ACCESS_FBINFO(bios)));
749 pci_read_config_dword(pdev, PCI_OPTION_REG, &opt);
750 pci_write_config_dword(pdev, PCI_OPTION_REG, opt | PCI_OPTION_ENABLE_ROM);
751 pci_read_config_dword(pdev, PCI_ROM_ADDRESS, &biosbase);
752 pci_read_config_dword(pdev, ACCESS_FBINFO(devflags.fbResource), &fbbase);
753 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, (fbbase & PCI_ROM_ADDRESS_MASK) | PCI_ROM_ADDRESS_ENABLE);
754 parse_bios(vaddr_va(ACCESS_FBINFO(video).vbase), &ACCESS_FBINFO(bios));
755 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, biosbase);
756 pci_write_config_dword(pdev, PCI_OPTION_REG, opt);
757 #ifdef CONFIG_X86
758 if (!ACCESS_FBINFO(bios).bios_valid) {
759 unsigned char __iomem* b;
760
761 b = ioremap(0x000C0000, 65536);
762 if (!b) {
763 printk(KERN_INFO "matroxfb: Unable to map legacy BIOS\n");
764 } else {
765 unsigned int ven = readb(b+0x64+0) | (readb(b+0x64+1) << 8);
766 unsigned int dev = readb(b+0x64+2) | (readb(b+0x64+3) << 8);
767
768 if (ven != pdev->vendor || dev != pdev->device) {
769 printk(KERN_INFO "matroxfb: Legacy BIOS is for %04X:%04X, while this device is %04X:%04X\n",
770 ven, dev, pdev->vendor, pdev->device);
771 } else {
772 parse_bios(b, &ACCESS_FBINFO(bios));
773 }
774 iounmap(b);
775 }
776 }
777 #endif
778 matroxfb_set_limits(PMINFO &ACCESS_FBINFO(bios));
779 printk(KERN_INFO "PInS memtype = %u\n",
780 (ACCESS_FBINFO(values).reg.opt & 0x1C00) >> 10);
781 }
782
783 EXPORT_SYMBOL(matroxfb_DAC_in);
784 EXPORT_SYMBOL(matroxfb_DAC_out);
785 EXPORT_SYMBOL(matroxfb_var2my);
786 EXPORT_SYMBOL(matroxfb_PLL_calcclock);
787 #ifndef CONFIG_FB_MATROX_MULTIHEAD
788 struct matrox_fb_info matroxfb_global_mxinfo;
789 EXPORT_SYMBOL(matroxfb_global_mxinfo);
790 #endif
791 EXPORT_SYMBOL(matroxfb_vgaHWinit); /* DAC1064, Ti3026 */
792 EXPORT_SYMBOL(matroxfb_vgaHWrestore); /* DAC1064, Ti3026 */
793 EXPORT_SYMBOL(matroxfb_read_pins);
794
795 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
796 MODULE_DESCRIPTION("Miscellaneous support for Matrox video cards");
797 MODULE_LICENSE("GPL");
Linux branches of Pieter du Preez