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[PATCH] g_file_storage: fix obscure race condition
[linux/fpc-iii.git] / drivers / video / matrox / matroxfb_misc.c
blobd9d3e9f6c08e245d54c8cf0621b340e03708fcc3
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 writting this driver)
82 *
83 * FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
84 *
85 */
86
87 /* make checkconfig does not check includes for this... */
88 #include <linux/config.h>
89
90 #include "matroxfb_misc.h"
91 #include <linux/interrupt.h>
92 #include <linux/matroxfb.h>
93
94 void matroxfb_DAC_out(CPMINFO int reg, int val) {
95 DBG_REG(__FUNCTION__)
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(CPMINFO int reg) {
101 DBG_REG(__FUNCTION__)
102 mga_outb(M_RAMDAC_BASE+M_X_INDEX, reg);
103 return mga_inb(M_RAMDAC_BASE+M_X_DATAREG);
104 }
105
106 void matroxfb_var2my(struct fb_var_screeninfo* var, struct my_timming* mt) {
107 unsigned int pixclock = var->pixclock;
108
109 DBG(__FUNCTION__)
110
111 if (!pixclock) pixclock = 10000; /* 10ns = 100MHz */
112 mt->pixclock = 1000000000 / pixclock;
113 if (mt->pixclock < 1) mt->pixclock = 1;
114 mt->mnp = -1;
115 mt->dblscan = var->vmode & FB_VMODE_DOUBLE;
116 mt->interlaced = var->vmode & FB_VMODE_INTERLACED;
117 mt->HDisplay = var->xres;
118 mt->HSyncStart = mt->HDisplay + var->right_margin;
119 mt->HSyncEnd = mt->HSyncStart + var->hsync_len;
120 mt->HTotal = mt->HSyncEnd + var->left_margin;
121 mt->VDisplay = var->yres;
122 mt->VSyncStart = mt->VDisplay + var->lower_margin;
123 mt->VSyncEnd = mt->VSyncStart + var->vsync_len;
124 mt->VTotal = mt->VSyncEnd + var->upper_margin;
125 mt->sync = var->sync;
126 }
127
128 int matroxfb_PLL_calcclock(const struct matrox_pll_features* pll, unsigned int freq, unsigned int fmax,
129 unsigned int* in, unsigned int* feed, unsigned int* post) {
130 unsigned int bestdiff = ~0;
131 unsigned int bestvco = 0;
132 unsigned int fxtal = pll->ref_freq;
133 unsigned int fwant;
134 unsigned int p;
135
136 DBG(__FUNCTION__)
137
138 fwant = freq;
139
140 #ifdef DEBUG
141 printk(KERN_ERR "post_shift_max: %d\n", pll->post_shift_max);
142 printk(KERN_ERR "ref_freq: %d\n", pll->ref_freq);
143 printk(KERN_ERR "freq: %d\n", freq);
144 printk(KERN_ERR "vco_freq_min: %d\n", pll->vco_freq_min);
145 printk(KERN_ERR "in_div_min: %d\n", pll->in_div_min);
146 printk(KERN_ERR "in_div_max: %d\n", pll->in_div_max);
147 printk(KERN_ERR "feed_div_min: %d\n", pll->feed_div_min);
148 printk(KERN_ERR "feed_div_max: %d\n", pll->feed_div_max);
149 printk(KERN_ERR "fmax: %d\n", fmax);
150 #endif
151 for (p = 1; p <= pll->post_shift_max; p++) {
152 if (fwant * 2 > fmax)
153 break;
154 fwant *= 2;
155 }
156 if (fwant < pll->vco_freq_min) fwant = pll->vco_freq_min;
157 if (fwant > fmax) fwant = fmax;
158 for (; p-- > 0; fwant >>= 1, bestdiff >>= 1) {
159 unsigned int m;
160
161 if (fwant < pll->vco_freq_min) break;
162 for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
163 unsigned int diff, fvco;
164 unsigned int n;
165
166 n = (fwant * (m + 1) + (fxtal >> 1)) / fxtal - 1;
167 if (n > pll->feed_div_max)
168 break;
169 if (n < pll->feed_div_min)
170 n = pll->feed_div_min;
171 fvco = (fxtal * (n + 1)) / (m + 1);
172 if (fvco < fwant)
173 diff = fwant - fvco;
174 else
175 diff = fvco - fwant;
176 if (diff < bestdiff) {
177 bestdiff = diff;
178 *post = p;
179 *in = m;
180 *feed = n;
181 bestvco = fvco;
182 }
183 }
184 }
185 dprintk(KERN_ERR "clk: %02X %02X %02X %d %d %d\n", *in, *feed, *post, fxtal, bestvco, fwant);
186 return bestvco;
187 }
188
189 int matroxfb_vgaHWinit(WPMINFO struct my_timming* m) {
190 unsigned int hd, hs, he, hbe, ht;
191 unsigned int vd, vs, ve, vt, lc;
192 unsigned int wd;
193 unsigned int divider;
194 int i;
195 int fwidth;
196 struct matrox_hw_state * const hw = &ACCESS_FBINFO(hw);
197
198 fwidth = 8;
199
200 DBG(__FUNCTION__)
201
202 hw->SEQ[0] = 0x00;
203 hw->SEQ[1] = 0x01; /* or 0x09 */
204 hw->SEQ[2] = 0x0F; /* bitplanes */
205 hw->SEQ[3] = 0x00;
206 hw->SEQ[4] = 0x0E;
207 /* CRTC 0..7, 9, 16..19, 21, 22 are reprogrammed by Matrox Millennium code... Hope that by MGA1064 too */
208 if (m->dblscan) {
209 m->VTotal <<= 1;
210 m->VDisplay <<= 1;
211 m->VSyncStart <<= 1;
212 m->VSyncEnd <<= 1;
213 }
214 if (m->interlaced) {
215 m->VTotal >>= 1;
216 m->VDisplay >>= 1;
217 m->VSyncStart >>= 1;
218 m->VSyncEnd >>= 1;
219 }
220
221 /* GCTL is ignored when not using 0xA0000 aperture */
222 hw->GCTL[0] = 0x00;
223 hw->GCTL[1] = 0x00;
224 hw->GCTL[2] = 0x00;
225 hw->GCTL[3] = 0x00;
226 hw->GCTL[4] = 0x00;
227 hw->GCTL[5] = 0x40;
228 hw->GCTL[6] = 0x05;
229 hw->GCTL[7] = 0x0F;
230 hw->GCTL[8] = 0xFF;
231
232 /* Whole ATTR is ignored in PowerGraphics mode */
233 for (i = 0; i < 16; i++)
234 hw->ATTR[i] = i;
235 hw->ATTR[16] = 0x41;
236 hw->ATTR[17] = 0xFF;
237 hw->ATTR[18] = 0x0F;
238 if (fwidth == 9)
239 hw->ATTR[19] = 0x08;
240 else
241 hw->ATTR[19] = 0x00;
242 hw->ATTR[20] = 0x00;
243
244 hd = m->HDisplay >> 3;
245 hs = m->HSyncStart >> 3;
246 he = m->HSyncEnd >> 3;
247 ht = m->HTotal >> 3;
248 /* standard timmings are in 8pixels, but for interleaved we cannot */
249 /* do it for 4bpp (because of (4bpp >> 1(interleaved))/4 == 0) */
250 /* using 16 or more pixels per unit can save us */
251 divider = ACCESS_FBINFO(curr.final_bppShift);
252 while (divider & 3) {
253 hd >>= 1;
254 hs >>= 1;
255 he >>= 1;
256 ht >>= 1;
257 divider <<= 1;
258 }
259 divider = divider / 4;
260 /* divider can be from 1 to 8 */
261 while (divider > 8) {
262 hd <<= 1;
263 hs <<= 1;
264 he <<= 1;
265 ht <<= 1;
266 divider >>= 1;
267 }
268 hd = hd - 1;
269 hs = hs - 1;
270 he = he - 1;
271 ht = ht - 1;
272 vd = m->VDisplay - 1;
273 vs = m->VSyncStart - 1;
274 ve = m->VSyncEnd - 1;
275 vt = m->VTotal - 2;
276 lc = vd;
277 /* G200 cannot work with (ht & 7) == 6 */
278 if (((ht & 0x07) == 0x06) || ((ht & 0x0F) == 0x04))
279 ht++;
280 hbe = ht;
281 wd = ACCESS_FBINFO(fbcon).var.xres_virtual * ACCESS_FBINFO(curr.final_bppShift) / 64;
282
283 hw->CRTCEXT[0] = 0;
284 hw->CRTCEXT[5] = 0;
285 if (m->interlaced) {
286 hw->CRTCEXT[0] = 0x80;
287 hw->CRTCEXT[5] = (hs + he - ht) >> 1;
288 if (!m->dblscan)
289 wd <<= 1;
290 vt &= ~1;
291 }
292 hw->CRTCEXT[0] |= (wd & 0x300) >> 4;
293 hw->CRTCEXT[1] = (((ht - 4) & 0x100) >> 8) |
294 ((hd & 0x100) >> 7) | /* blanking */
295 ((hs & 0x100) >> 6) | /* sync start */
296 (hbe & 0x040); /* end hor. blanking */
297 /* FIXME: Enable vidrst only on G400, and only if TV-out is used */
298 if (ACCESS_FBINFO(outputs[1]).src == MATROXFB_SRC_CRTC1)
299 hw->CRTCEXT[1] |= 0x88; /* enable horizontal and vertical vidrst */
300 hw->CRTCEXT[2] = ((vt & 0xC00) >> 10) |
301 ((vd & 0x400) >> 8) | /* disp end */
302 ((vd & 0xC00) >> 7) | /* vblanking start */
303 ((vs & 0xC00) >> 5) |
304 ((lc & 0x400) >> 3);
305 hw->CRTCEXT[3] = (divider - 1) | 0x80;
306 hw->CRTCEXT[4] = 0;
307
308 hw->CRTC[0] = ht-4;
309 hw->CRTC[1] = hd;
310 hw->CRTC[2] = hd;
311 hw->CRTC[3] = (hbe & 0x1F) | 0x80;
312 hw->CRTC[4] = hs;
313 hw->CRTC[5] = ((hbe & 0x20) << 2) | (he & 0x1F);
314 hw->CRTC[6] = vt & 0xFF;
315 hw->CRTC[7] = ((vt & 0x100) >> 8) |
316 ((vd & 0x100) >> 7) |
317 ((vs & 0x100) >> 6) |
318 ((vd & 0x100) >> 5) |
319 ((lc & 0x100) >> 4) |
320 ((vt & 0x200) >> 4) |
321 ((vd & 0x200) >> 3) |
322 ((vs & 0x200) >> 2);
323 hw->CRTC[8] = 0x00;
324 hw->CRTC[9] = ((vd & 0x200) >> 4) |
325 ((lc & 0x200) >> 3);
326 if (m->dblscan && !m->interlaced)
327 hw->CRTC[9] |= 0x80;
328 for (i = 10; i < 16; i++)
329 hw->CRTC[i] = 0x00;
330 hw->CRTC[16] = vs /* & 0xFF */;
331 hw->CRTC[17] = (ve & 0x0F) | 0x20;
332 hw->CRTC[18] = vd /* & 0xFF */;
333 hw->CRTC[19] = wd /* & 0xFF */;
334 hw->CRTC[20] = 0x00;
335 hw->CRTC[21] = vd /* & 0xFF */;
336 hw->CRTC[22] = (vt + 1) /* & 0xFF */;
337 hw->CRTC[23] = 0xC3;
338 hw->CRTC[24] = lc;
339 return 0;
340 };
341
342 void matroxfb_vgaHWrestore(WPMINFO2) {
343 int i;
344 struct matrox_hw_state * const hw = &ACCESS_FBINFO(hw);
345 CRITFLAGS
346
347 DBG(__FUNCTION__)
348
349 dprintk(KERN_INFO "MiscOutReg: %02X\n", hw->MiscOutReg);
350 dprintk(KERN_INFO "SEQ regs: ");
351 for (i = 0; i < 5; i++)
352 dprintk("%02X:", hw->SEQ[i]);
353 dprintk("\n");
354 dprintk(KERN_INFO "GDC regs: ");
355 for (i = 0; i < 9; i++)
356 dprintk("%02X:", hw->GCTL[i]);
357 dprintk("\n");
358 dprintk(KERN_INFO "CRTC regs: ");
359 for (i = 0; i < 25; i++)
360 dprintk("%02X:", hw->CRTC[i]);
361 dprintk("\n");
362 dprintk(KERN_INFO "ATTR regs: ");
363 for (i = 0; i < 21; i++)
364 dprintk("%02X:", hw->ATTR[i]);
365 dprintk("\n");
366
367 CRITBEGIN
368
369 mga_inb(M_ATTR_RESET);
370 mga_outb(M_ATTR_INDEX, 0);
371 mga_outb(M_MISC_REG, hw->MiscOutReg);
372 for (i = 1; i < 5; i++)
373 mga_setr(M_SEQ_INDEX, i, hw->SEQ[i]);
374 mga_setr(M_CRTC_INDEX, 17, hw->CRTC[17] & 0x7F);
375 for (i = 0; i < 25; i++)
376 mga_setr(M_CRTC_INDEX, i, hw->CRTC[i]);
377 for (i = 0; i < 9; i++)
378 mga_setr(M_GRAPHICS_INDEX, i, hw->GCTL[i]);
379 for (i = 0; i < 21; i++) {
380 mga_inb(M_ATTR_RESET);
381 mga_outb(M_ATTR_INDEX, i);
382 mga_outb(M_ATTR_INDEX, hw->ATTR[i]);
383 }
384 mga_outb(M_PALETTE_MASK, 0xFF);
385 mga_outb(M_DAC_REG, 0x00);
386 for (i = 0; i < 768; i++)
387 mga_outb(M_DAC_VAL, hw->DACpal[i]);
388 mga_inb(M_ATTR_RESET);
389 mga_outb(M_ATTR_INDEX, 0x20);
390
391 CRITEND
392 }
393
394 static void get_pins(unsigned char __iomem* pins, struct matrox_bios* bd) {
395 unsigned int b0 = readb(pins);
396
397 if (b0 == 0x2E && readb(pins+1) == 0x41) {
398 unsigned int pins_len = readb(pins+2);
399 unsigned int i;
400 unsigned char cksum;
401 unsigned char* dst = bd->pins;
402
403 if (pins_len < 3 || pins_len > 128) {
404 return;
405 }
406 *dst++ = 0x2E;
407 *dst++ = 0x41;
408 *dst++ = pins_len;
409 cksum = 0x2E + 0x41 + pins_len;
410 for (i = 3; i < pins_len; i++) {
411 cksum += *dst++ = readb(pins+i);
412 }
413 if (cksum) {
414 return;
415 }
416 bd->pins_len = pins_len;
417 } else if (b0 == 0x40 && readb(pins+1) == 0x00) {
418 unsigned int i;
419 unsigned char* dst = bd->pins;
420
421 *dst++ = 0x40;
422 *dst++ = 0;
423 for (i = 2; i < 0x40; i++) {
424 *dst++ = readb(pins+i);
425 }
426 bd->pins_len = 0x40;
427 }
428 }
429
430 static void get_bios_version(unsigned char __iomem * vbios, struct matrox_bios* bd) {
431 unsigned int pcir_offset;
432
433 pcir_offset = readb(vbios + 24) | (readb(vbios + 25) << 8);
434 if (pcir_offset >= 26 && pcir_offset < 0xFFE0 &&
435 readb(vbios + pcir_offset ) == 'P' &&
436 readb(vbios + pcir_offset + 1) == 'C' &&
437 readb(vbios + pcir_offset + 2) == 'I' &&
438 readb(vbios + pcir_offset + 3) == 'R') {
439 unsigned char h;
440
441 h = readb(vbios + pcir_offset + 0x12);
442 bd->version.vMaj = (h >> 4) & 0xF;
443 bd->version.vMin = h & 0xF;
444 bd->version.vRev = readb(vbios + pcir_offset + 0x13);
445 } else {
446 unsigned char h;
447
448 h = readb(vbios + 5);
449 bd->version.vMaj = (h >> 4) & 0xF;
450 bd->version.vMin = h & 0xF;
451 bd->version.vRev = 0;
452 }
453 }
454
455 static void get_bios_output(unsigned char __iomem* vbios, struct matrox_bios* bd) {
456 unsigned char b;
457
458 b = readb(vbios + 0x7FF1);
459 if (b == 0xFF) {
460 b = 0;
461 }
462 bd->output.state = b;
463 }
464
465 static void get_bios_tvout(unsigned char __iomem* vbios, struct matrox_bios* bd) {
466 unsigned int i;
467
468 /* Check for 'IBM .*(V....TVO' string - it means TVO BIOS */
469 bd->output.tvout = 0;
470 if (readb(vbios + 0x1D) != 'I' ||
471 readb(vbios + 0x1E) != 'B' ||
472 readb(vbios + 0x1F) != 'M' ||
473 readb(vbios + 0x20) != ' ') {
474 return;
475 }
476 for (i = 0x2D; i < 0x2D + 128; i++) {
477 unsigned char b = readb(vbios + i);
478
479 if (b == '(' && readb(vbios + i + 1) == 'V') {
480 if (readb(vbios + i + 6) == 'T' &&
481 readb(vbios + i + 7) == 'V' &&
482 readb(vbios + i + 8) == 'O') {
483 bd->output.tvout = 1;
484 }
485 return;
486 }
487 if (b == 0)
488 break;
489 }
490 }
491
492 static void parse_bios(unsigned char __iomem* vbios, struct matrox_bios* bd) {
493 unsigned int pins_offset;
494
495 if (readb(vbios) != 0x55 || readb(vbios + 1) != 0xAA) {
496 return;
497 }
498 bd->bios_valid = 1;
499 get_bios_version(vbios, bd);
500 get_bios_output(vbios, bd);
501 get_bios_tvout(vbios, bd);
502 #if defined(__powerpc__)
503 /* On PowerPC cards, the PInS offset isn't stored at the end of the
504 * BIOS image. Instead, you must search the entire BIOS image for
505 * the magic PInS signature.
506 *
507 * This actually applies to all OpenFirmware base cards. Since these
508 * cards could be put in a MIPS or SPARC system, should the condition
509 * be something different?
510 */
511 for ( pins_offset = 0 ; pins_offset <= 0xFF80 ; pins_offset++ ) {
512 unsigned char header[3];
513
514 header[0] = readb(vbios + pins_offset);
515 header[1] = readb(vbios + pins_offset + 1);
516 header[2] = readb(vbios + pins_offset + 2);
517 if ( (header[0] == 0x2E) && (header[1] == 0x41)
518 && ((header[2] == 0x40) || (header[2] == 0x80)) ) {
519 printk(KERN_INFO "PInS data found at offset %u\n",
520 pins_offset);
521 get_pins(vbios + pins_offset, bd);
522 break;
523 }
524 }
525 #else
526 pins_offset = readb(vbios + 0x7FFC) | (readb(vbios + 0x7FFD) << 8);
527 if (pins_offset <= 0xFF80) {
528 get_pins(vbios + pins_offset, bd);
529 }
530 #endif
531 }
532
533 #define get_u16(x) (le16_to_cpu(get_unaligned((__u16*)(x))))
534 #define get_u32(x) (le32_to_cpu(get_unaligned((__u32*)(x))))
535 static int parse_pins1(WPMINFO const struct matrox_bios* bd) {
536 unsigned int maxdac;
537
538 switch (bd->pins[22]) {
539 case 0: maxdac = 175000; break;
540 case 1: maxdac = 220000; break;
541 default: maxdac = 240000; break;
542 }
543 if (get_u16(bd->pins + 24)) {
544 maxdac = get_u16(bd->pins + 24) * 10;
545 }
546 MINFO->limits.pixel.vcomax = maxdac;
547 MINFO->values.pll.system = get_u16(bd->pins + 28) ? get_u16(bd->pins + 28) * 10 : 50000;
548 /* ignore 4MB, 8MB, module clocks */
549 MINFO->features.pll.ref_freq = 14318;
550 MINFO->values.reg.mctlwtst = 0x00030101;
551 return 0;
552 }
553
554 static void default_pins1(WPMINFO2) {
555 /* Millennium */
556 MINFO->limits.pixel.vcomax = 220000;
557 MINFO->values.pll.system = 50000;
558 MINFO->features.pll.ref_freq = 14318;
559 MINFO->values.reg.mctlwtst = 0x00030101;
560 }
561
562 static int parse_pins2(WPMINFO const struct matrox_bios* bd) {
563 MINFO->limits.pixel.vcomax =
564 MINFO->limits.system.vcomax = (bd->pins[41] == 0xFF) ? 230000 : ((bd->pins[41] + 100) * 1000);
565 MINFO->values.reg.mctlwtst = ((bd->pins[51] & 0x01) ? 0x00000001 : 0) |
566 ((bd->pins[51] & 0x02) ? 0x00000100 : 0) |
567 ((bd->pins[51] & 0x04) ? 0x00010000 : 0) |
568 ((bd->pins[51] & 0x08) ? 0x00020000 : 0);
569 MINFO->values.pll.system = (bd->pins[43] == 0xFF) ? 50000 : ((bd->pins[43] + 100) * 1000);
570 MINFO->features.pll.ref_freq = 14318;
571 return 0;
572 }
573
574 static void default_pins2(WPMINFO2) {
575 /* Millennium II, Mystique */
576 MINFO->limits.pixel.vcomax =
577 MINFO->limits.system.vcomax = 230000;
578 MINFO->values.reg.mctlwtst = 0x00030101;
579 MINFO->values.pll.system = 50000;
580 MINFO->features.pll.ref_freq = 14318;
581 }
582
583 static int parse_pins3(WPMINFO const struct matrox_bios* bd) {
584 MINFO->limits.pixel.vcomax =
585 MINFO->limits.system.vcomax = (bd->pins[36] == 0xFF) ? 230000 : ((bd->pins[36] + 100) * 1000);
586 MINFO->values.reg.mctlwtst = get_u32(bd->pins + 48) == 0xFFFFFFFF ? 0x01250A21 : get_u32(bd->pins + 48);
587 /* memory config */
588 MINFO->values.reg.memrdbk = ((bd->pins[57] << 21) & 0x1E000000) |
589 ((bd->pins[57] << 22) & 0x00C00000) |
590 ((bd->pins[56] << 1) & 0x000001E0) |
591 ( bd->pins[56] & 0x0000000F);
592 MINFO->values.reg.opt = (bd->pins[54] & 7) << 10;
593 MINFO->values.reg.opt2 = bd->pins[58] << 12;
594 MINFO->features.pll.ref_freq = (bd->pins[52] & 0x20) ? 14318 : 27000;
595 return 0;
596 }
597
598 static void default_pins3(WPMINFO2) {
599 /* G100, G200 */
600 MINFO->limits.pixel.vcomax =
601 MINFO->limits.system.vcomax = 230000;
602 MINFO->values.reg.mctlwtst = 0x01250A21;
603 MINFO->values.reg.memrdbk = 0x00000000;
604 MINFO->values.reg.opt = 0x00000C00;
605 MINFO->values.reg.opt2 = 0x00000000;
606 MINFO->features.pll.ref_freq = 27000;
607 }
608
609 static int parse_pins4(WPMINFO const struct matrox_bios* bd) {
610 MINFO->limits.pixel.vcomax = (bd->pins[ 39] == 0xFF) ? 230000 : bd->pins[ 39] * 4000;
611 MINFO->limits.system.vcomax = (bd->pins[ 38] == 0xFF) ? MINFO->limits.pixel.vcomax : bd->pins[ 38] * 4000;
612 MINFO->values.reg.mctlwtst = get_u32(bd->pins + 71);
613 MINFO->values.reg.memrdbk = ((bd->pins[87] << 21) & 0x1E000000) |
614 ((bd->pins[87] << 22) & 0x00C00000) |
615 ((bd->pins[86] << 1) & 0x000001E0) |
616 ( bd->pins[86] & 0x0000000F);
617 MINFO->values.reg.opt = ((bd->pins[53] << 15) & 0x00400000) |
618 ((bd->pins[53] << 22) & 0x10000000) |
619 ((bd->pins[53] << 7) & 0x00001C00);
620 MINFO->values.reg.opt3 = get_u32(bd->pins + 67);
621 MINFO->values.pll.system = (bd->pins[ 65] == 0xFF) ? 200000 : bd->pins[ 65] * 4000;
622 MINFO->features.pll.ref_freq = (bd->pins[ 92] & 0x01) ? 14318 : 27000;
623 return 0;
624 }
625
626 static void default_pins4(WPMINFO2) {
627 /* G400 */
628 MINFO->limits.pixel.vcomax =
629 MINFO->limits.system.vcomax = 252000;
630 MINFO->values.reg.mctlwtst = 0x04A450A1;
631 MINFO->values.reg.memrdbk = 0x000000E7;
632 MINFO->values.reg.opt = 0x10000400;
633 MINFO->values.reg.opt3 = 0x0190A419;
634 MINFO->values.pll.system = 200000;
635 MINFO->features.pll.ref_freq = 27000;
636 }
637
638 static int parse_pins5(WPMINFO const struct matrox_bios* bd) {
639 unsigned int mult;
640
641 mult = bd->pins[4]?8000:6000;
642
643 MINFO->limits.pixel.vcomax = (bd->pins[ 38] == 0xFF) ? 600000 : bd->pins[ 38] * mult;
644 MINFO->limits.system.vcomax = (bd->pins[ 36] == 0xFF) ? MINFO->limits.pixel.vcomax : bd->pins[ 36] * mult;
645 MINFO->limits.video.vcomax = (bd->pins[ 37] == 0xFF) ? MINFO->limits.system.vcomax : bd->pins[ 37] * mult;
646 MINFO->limits.pixel.vcomin = (bd->pins[123] == 0xFF) ? 256000 : bd->pins[123] * mult;
647 MINFO->limits.system.vcomin = (bd->pins[121] == 0xFF) ? MINFO->limits.pixel.vcomin : bd->pins[121] * mult;
648 MINFO->limits.video.vcomin = (bd->pins[122] == 0xFF) ? MINFO->limits.system.vcomin : bd->pins[122] * mult;
649 MINFO->values.pll.system =
650 MINFO->values.pll.video = (bd->pins[ 92] == 0xFF) ? 284000 : bd->pins[ 92] * 4000;
651 MINFO->values.reg.opt = get_u32(bd->pins+ 48);
652 MINFO->values.reg.opt2 = get_u32(bd->pins+ 52);
653 MINFO->values.reg.opt3 = get_u32(bd->pins+ 94);
654 MINFO->values.reg.mctlwtst = get_u32(bd->pins+ 98);
655 MINFO->values.reg.memmisc = get_u32(bd->pins+102);
656 MINFO->values.reg.memrdbk = get_u32(bd->pins+106);
657 MINFO->features.pll.ref_freq = (bd->pins[110] & 0x01) ? 14318 : 27000;
658 MINFO->values.memory.ddr = (bd->pins[114] & 0x60) == 0x20;
659 MINFO->values.memory.dll = (bd->pins[115] & 0x02) != 0;
660 MINFO->values.memory.emrswen = (bd->pins[115] & 0x01) != 0;
661 MINFO->values.reg.maccess = MINFO->values.memory.emrswen ? 0x00004000 : 0x00000000;
662 if (bd->pins[115] & 4) {
663 MINFO->values.reg.mctlwtst_core = MINFO->values.reg.mctlwtst;
664 } else {
665 u_int32_t wtst_xlat[] = { 0, 1, 5, 6, 7, 5, 2, 3 };
666 MINFO->values.reg.mctlwtst_core = (MINFO->values.reg.mctlwtst & ~7) |
667 wtst_xlat[MINFO->values.reg.mctlwtst & 7];
668 }
669 return 0;
670 }
671
672 static void default_pins5(WPMINFO2) {
673 /* Mine 16MB G450 with SDRAM DDR */
674 MINFO->limits.pixel.vcomax =
675 MINFO->limits.system.vcomax =
676 MINFO->limits.video.vcomax = 600000;
677 MINFO->limits.pixel.vcomin =
678 MINFO->limits.system.vcomin =
679 MINFO->limits.video.vcomin = 256000;
680 MINFO->values.pll.system =
681 MINFO->values.pll.video = 284000;
682 MINFO->values.reg.opt = 0x404A1160;
683 MINFO->values.reg.opt2 = 0x0000AC00;
684 MINFO->values.reg.opt3 = 0x0090A409;
685 MINFO->values.reg.mctlwtst_core =
686 MINFO->values.reg.mctlwtst = 0x0C81462B;
687 MINFO->values.reg.memmisc = 0x80000004;
688 MINFO->values.reg.memrdbk = 0x01001103;
689 MINFO->features.pll.ref_freq = 27000;
690 MINFO->values.memory.ddr = 1;
691 MINFO->values.memory.dll = 1;
692 MINFO->values.memory.emrswen = 1;
693 MINFO->values.reg.maccess = 0x00004000;
694 }
695
696 static int matroxfb_set_limits(WPMINFO const struct matrox_bios* bd) {
697 unsigned int pins_version;
698 static const unsigned int pinslen[] = { 64, 64, 64, 128, 128 };
699
700 switch (ACCESS_FBINFO(chip)) {
701 case MGA_2064: default_pins1(PMINFO2); break;
702 case MGA_2164:
703 case MGA_1064:
704 case MGA_1164: default_pins2(PMINFO2); break;
705 case MGA_G100:
706 case MGA_G200: default_pins3(PMINFO2); break;
707 case MGA_G400: default_pins4(PMINFO2); break;
708 case MGA_G450:
709 case MGA_G550: default_pins5(PMINFO2); break;
710 }
711 if (!bd->bios_valid) {
712 printk(KERN_INFO "matroxfb: Your Matrox device does not have BIOS\n");
713 return -1;
714 }
715 if (bd->pins_len < 64) {
716 printk(KERN_INFO "matroxfb: BIOS on your Matrox device does not contain powerup info\n");
717 return -1;
718 }
719 if (bd->pins[0] == 0x2E && bd->pins[1] == 0x41) {
720 pins_version = bd->pins[5];
721 if (pins_version < 2 || pins_version > 5) {
722 printk(KERN_INFO "matroxfb: Unknown version (%u) of powerup info\n", pins_version);
723 return -1;
724 }
725 } else {
726 pins_version = 1;
727 }
728 if (bd->pins_len != pinslen[pins_version - 1]) {
729 printk(KERN_INFO "matroxfb: Invalid powerup info\n");
730 return -1;
731 }
732 switch (pins_version) {
733 case 1:
734 return parse_pins1(PMINFO bd);
735 case 2:
736 return parse_pins2(PMINFO bd);
737 case 3:
738 return parse_pins3(PMINFO bd);
739 case 4:
740 return parse_pins4(PMINFO bd);
741 case 5:
742 return parse_pins5(PMINFO bd);
743 default:
744 printk(KERN_DEBUG "matroxfb: Powerup info version %u is not yet supported\n", pins_version);
745 return -1;
746 }
747 }
748
749 void matroxfb_read_pins(WPMINFO2) {
750 u32 opt;
751 u32 biosbase;
752 u32 fbbase;
753 struct pci_dev* pdev = ACCESS_FBINFO(pcidev);
754
755 memset(&ACCESS_FBINFO(bios), 0, sizeof(ACCESS_FBINFO(bios)));
756 pci_read_config_dword(pdev, PCI_OPTION_REG, &opt);
757 pci_write_config_dword(pdev, PCI_OPTION_REG, opt | PCI_OPTION_ENABLE_ROM);
758 pci_read_config_dword(pdev, PCI_ROM_ADDRESS, &biosbase);
759 pci_read_config_dword(pdev, ACCESS_FBINFO(devflags.fbResource), &fbbase);
760 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, (fbbase & PCI_ROM_ADDRESS_MASK) | PCI_ROM_ADDRESS_ENABLE);
761 parse_bios(vaddr_va(ACCESS_FBINFO(video).vbase), &ACCESS_FBINFO(bios));
762 pci_write_config_dword(pdev, PCI_ROM_ADDRESS, biosbase);
763 pci_write_config_dword(pdev, PCI_OPTION_REG, opt);
764 #ifdef CONFIG_X86
765 if (!ACCESS_FBINFO(bios).bios_valid) {
766 unsigned char __iomem* b;
767
768 b = ioremap(0x000C0000, 65536);
769 if (!b) {
770 printk(KERN_INFO "matroxfb: Unable to map legacy BIOS\n");
771 } else {
772 unsigned int ven = readb(b+0x64+0) | (readb(b+0x64+1) << 8);
773 unsigned int dev = readb(b+0x64+2) | (readb(b+0x64+3) << 8);
774
775 if (ven != pdev->vendor || dev != pdev->device) {
776 printk(KERN_INFO "matroxfb: Legacy BIOS is for %04X:%04X, while this device is %04X:%04X\n",
777 ven, dev, pdev->vendor, pdev->device);
778 } else {
779 parse_bios(b, &ACCESS_FBINFO(bios));
780 }
781 iounmap(b);
782 }
783 }
784 #endif
785 matroxfb_set_limits(PMINFO &ACCESS_FBINFO(bios));
786 printk(KERN_INFO "PInS memtype = %u\n",
787 (ACCESS_FBINFO(values).reg.opt & 0x1C00) >> 10);
788 }
789
790 EXPORT_SYMBOL(matroxfb_DAC_in);
791 EXPORT_SYMBOL(matroxfb_DAC_out);
792 EXPORT_SYMBOL(matroxfb_var2my);
793 EXPORT_SYMBOL(matroxfb_PLL_calcclock);
794 #ifndef CONFIG_FB_MATROX_MULTIHEAD
795 struct matrox_fb_info matroxfb_global_mxinfo;
796 EXPORT_SYMBOL(matroxfb_global_mxinfo);
797 #endif
798 EXPORT_SYMBOL(matroxfb_vgaHWinit); /* DAC1064, Ti3026 */
799 EXPORT_SYMBOL(matroxfb_vgaHWrestore); /* DAC1064, Ti3026 */
800 EXPORT_SYMBOL(matroxfb_read_pins);
801
802 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
803 MODULE_DESCRIPTION("Miscellaneous support for Matrox video cards");
804 MODULE_LICENSE("GPL");
Linux with added FPC-III support