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PCI PM: Avoid touching devices behind bridges in unknown state
[linux-2.6/verdex.git] / drivers / video / cyblafb.c
blob9704b73135f54588e08c1c57075bf61491c67dd7
1 /*
2 * Frame buffer driver for Trident Cyberblade/i1 graphics core
3 *
4 * Copyright 2005 Knut Petersen <Knut_Petersen@t-online.de>
5 *
6 * CREDITS:
7 * tridentfb.c by Jani Monoses
8 * see files above for further credits
9 *
10 */
11
12 #define CYBLAFB_DEBUG 0
13 #define CYBLAFB_KD_GRAPHICS_QUIRK 1
14
15 #define CYBLAFB_PIXMAPSIZE 8192
16
17 #include <linux/module.h>
18 #include <linux/string.h>
19 #include <linux/fb.h>
20 #include <linux/init.h>
21 #include <linux/pci.h>
22 #include <asm/types.h>
23 #include <video/cyblafb.h>
24
25 #define VERSION "0.62"
26
27 struct cyblafb_par {
28 u32 pseudo_pal[16];
29 struct fb_ops ops;
30 };
31
32 static struct fb_fix_screeninfo cyblafb_fix __devinitdata = {
33 .id = "CyBla",
34 .type = FB_TYPE_PACKED_PIXELS,
35 .xpanstep = 1,
36 .ypanstep = 1,
37 .ywrapstep = 1,
38 .visual = FB_VISUAL_PSEUDOCOLOR,
39 .accel = FB_ACCEL_NONE,
40 };
41
42 static char *mode __devinitdata = NULL;
43 static int bpp __devinitdata = 8;
44 static int ref __devinitdata = 75;
45 static int fp __devinitdata;
46 static int crt __devinitdata;
47 static int memsize __devinitdata;
48
49 static int basestride;
50 static int vesafb;
51 static int nativex;
52 static int center;
53 static int stretch;
54 static int pciwb = 1;
55 static int pcirb = 1;
56 static int pciwr = 1;
57 static int pcirr = 1;
58 static int disabled;
59 static int verbosity;
60 static int displaytype;
61
62 static void __iomem *io_virt; // iospace virtual memory address
63
64 module_param(mode, charp, 0);
65 module_param(bpp, int, 0);
66 module_param(ref, int, 0);
67 module_param(fp, int, 0);
68 module_param(crt, int, 0);
69 module_param(nativex, int, 0);
70 module_param(center, int, 0);
71 module_param(stretch, int, 0);
72 module_param(pciwb, int, 0);
73 module_param(pcirb, int, 0);
74 module_param(pciwr, int, 0);
75 module_param(pcirr, int, 0);
76 module_param(memsize, int, 0);
77 module_param(verbosity, int, 0);
78
79 //=========================================
80 //
81 // Well, we have to fix the upper layers.
82 // Until this has been done, we work around
83 // the bugs.
84 //
85 //=========================================
86
87 #if (CYBLAFB_KD_GRAPHICS_QUIRK && CYBLAFB_DEBUG)
88 if (disabled) { \
89 printk("********\n");\
90 dump_stack();\
91 return val;\
92 }
93
94 #elif CYBLAFB_KD_GRAPHICS_QUIRK
95 #define KD_GRAPHICS_RETURN(val)\
96 if (disabled) {\
97 return val;\
98 }
99 #else
100 #define KD_GRAPHICS_RETURN(val)
101 #endif
102
103 //=========================================
104 //
105 // Port access macros for memory mapped io
106 //
107 //=========================================
108
109 #define out8(r, v) writeb(v, io_virt + r)
110 #define out32(r, v) writel(v, io_virt + r)
111 #define in8(r) readb(io_virt + r)
112 #define in32(r) readl(io_virt + r)
113
114 //======================================
115 //
116 // Hardware access inline functions
117 //
118 //======================================
119
120 static inline u8 read3X4(u32 reg)
121 {
122 out8(0x3D4, reg);
123 return in8(0x3D5);
124 }
125
126 static inline u8 read3C4(u32 reg)
127 {
128 out8(0x3C4, reg);
129 return in8(0x3C5);
130 }
131
132 static inline u8 read3CE(u32 reg)
133 {
134 out8(0x3CE, reg);
135 return in8(0x3CF);
136 }
137
138 static inline void write3X4(u32 reg, u8 val)
139 {
140 out8(0x3D4, reg);
141 out8(0x3D5, val);
142 }
143
144 static inline void write3C4(u32 reg, u8 val)
145 {
146 out8(0x3C4, reg);
147 out8(0x3C5, val);
148 }
149
150 static inline void write3CE(u32 reg, u8 val)
151 {
152 out8(0x3CE, reg);
153 out8(0x3CF, val);
154 }
155
156 static inline void write3C0(u32 reg, u8 val)
157 {
158 in8(0x3DA); // read to reset index
159 out8(0x3C0, reg);
160 out8(0x3C0, val);
161 }
162
163 //=================================================
164 //
165 // Enable memory mapped io and unprotect registers
166 //
167 //=================================================
168
169 static void enable_mmio(void)
170 {
171 u8 tmp;
172
173 outb(0x0B, 0x3C4);
174 inb(0x3C5); // Set NEW mode
175 outb(SR0E, 0x3C4); // write enable a lot of extended ports
176 outb(0x80, 0x3C5);
177
178 outb(SR11, 0x3C4); // write enable those extended ports that
179 outb(0x87, 0x3C5); // are not affected by SR0E_New
180
181 outb(CR1E, 0x3d4); // clear write protect bit for port 0x3c2
182 tmp = inb(0x3d5) & 0xBF;
183 outb(CR1E, 0x3d4);
184 outb(tmp, 0x3d5);
185
186 outb(CR39, 0x3D4);
187 outb(inb(0x3D5) | 0x01, 0x3D5); // Enable mmio
188 }
189
190 //=================================================
191 //
192 // Set pixel clock VCLK1
193 // - multipliers set elswhere
194 // - freq in units of 0.01 MHz
195 //
196 // Hardware bug: SR18 >= 250 is broken for the
197 // cyberblade/i1
198 //
199 //=================================================
200
201 static void set_vclk(struct cyblafb_par *par, int freq)
202 {
203 u32 m, n, k;
204 int f, fi, d, di;
205 u8 lo = 0, hi = 0;
206
207 d = 2000;
208 k = freq >= 10000 ? 0 : freq >= 5000 ? 1 : freq >= 2500 ? 2 : 3;
209 for (m = 0; m < 64; m++)
210 for (n = 0; n < 250; n++) {
211 fi = (int)(((5864727 * (n + 8)) /
212 ((m + 2) * (1 << k))) >> 12);
213 if ((di = abs(fi - freq)) < d) {
214 d = di;
215 f = fi;
216 lo = (u8) n;
217 hi = (u8) ((k << 6) | m);
218 }
219 }
220 write3C4(SR19, hi);
221 write3C4(SR18, lo);
222 if (verbosity > 0)
223 output("pixclock = %d.%02d MHz, k/m/n %x %x %x\n",
224 freq / 100, freq % 100, (hi & 0xc0) >> 6, hi & 0x3f, lo);
225 }
226
227 //================================================
228 //
229 // Cyberblade specific Graphics Engine (GE) setup
230 //
231 //================================================
232
233 static void cyblafb_setup_GE(int pitch, int bpp)
234 {
235 KD_GRAPHICS_RETURN();
236
237 switch (bpp) {
238 case 8:
239 basestride = ((pitch >> 3) << 20) | (0 << 29);
240 break;
241 case 15:
242 basestride = ((pitch >> 3) << 20) | (5 << 29);
243 break;
244 case 16:
245 basestride = ((pitch >> 3) << 20) | (1 << 29);
246 break;
247 case 24:
248 case 32:
249 basestride = ((pitch >> 3) << 20) | (2 << 29);
250 break;
251 }
252
253 write3X4(CR36, 0x90); // reset GE
254 write3X4(CR36, 0x80); // enable GE
255 out32(GE24, 1 << 7); // reset all GE pointers by toggling
256 out32(GE24, 0); // d7 of GE24
257 write3X4(CR2D, 0x00); // GE Timinigs, no delays
258 out32(GE6C, 0); // Pattern and Style, p 129, ok
259 }
260
261 //=====================================================================
262 //
263 // Cyberblade specific syncing
264 //
265 // A timeout might be caused by disabled mmio.
266 // Cause:
267 // - bit CR39 & 1 == 0 upon return, X trident driver bug
268 // - kdm bug (KD_GRAPHICS not set on first switch)
269 // - kernel design flaw (it believes in the correctness
270 // of kdm/X
271 // First we try to sync ignoring that problem, as most of the
272 // time that will succeed immediately and the enable_mmio()
273 // would only degrade performance.
274 //
275 //=====================================================================
276
277 static int cyblafb_sync(struct fb_info *info)
278 {
279 u32 status, i = 100000;
280
281 KD_GRAPHICS_RETURN(0);
282
283 while (((status = in32(GE20)) & 0xFe800000) && i != 0)
284 i--;
285
286 if (i == 0) {
287 enable_mmio();
288 i = 1000000;
289 while (((status = in32(GE20)) & 0xFA800000) && i != 0)
290 i--;
291 if (i == 0) {
292 output("GE Timeout, status: %x\n", status);
293 if (status & 0x80000000)
294 output("Bresenham Engine : Busy\n");
295 if (status & 0x40000000)
296 output("Setup Engine : Busy\n");
297 if (status & 0x20000000)
298 output("SP / DPE : Busy\n");
299 if (status & 0x10000000)
300 output("Memory Interface : Busy\n");
301 if (status & 0x08000000)
302 output("Com Lst Proc : Busy\n");
303 if (status & 0x04000000)
304 output("Block Write : Busy\n");
305 if (status & 0x02000000)
306 output("Command Buffer : Full\n");
307 if (status & 0x01000000)
308 output("RESERVED : Busy\n");
309 if (status & 0x00800000)
310 output("PCI Write Buffer : Busy\n");
311 cyblafb_setup_GE(info->var.xres,
312 info->var.bits_per_pixel);
313 }
314 }
315
316 return 0;
317 }
318
319 //==============================
320 //
321 // Cyberblade specific fillrect
322 //
323 //==============================
324
325 static void cyblafb_fillrect(struct fb_info *info, const struct fb_fillrect *fr)
326 {
327 u32 bpp = info->var.bits_per_pixel, col, desty, height;
328
329 KD_GRAPHICS_RETURN();
330
331 switch (bpp) {
332 default:
333 case 8:
334 col = fr->color;
335 col |= col << 8;
336 col |= col << 16;
337 break;
338 case 16:
339 col = ((u32 *) (info->pseudo_palette))[fr->color];
340 col |= col << 16;
341 break;
342 case 32:
343 col = ((u32 *) (info->pseudo_palette))[fr->color];
344 break;
345 }
346
347 desty = fr->dy;
348 height = fr->height;
349 while (height) {
350 out32(GEB8, basestride | ((desty * info->var.xres_virtual *
351 bpp) >> 6));
352 out32(GE60, col);
353 out32(GE48, fr->rop ? 0x66 : ROP_S);
354 out32(GE44, 0x20000000 | 1 << 19 | 1 << 4 | 2 << 2);
355 out32(GE08, point(fr->dx, 0));
356 out32(GE0C, point(fr->dx + fr->width - 1,
357 height > 4096 ? 4095 : height - 1));
358 if (likely(height <= 4096))
359 return;
360 desty += 4096;
361 height -= 4096;
362 }
363 }
364
365 //================================================
366 //
367 // Cyberblade specific copyarea
368 //
369 // This function silently assumes that it never
370 // will be called with width or height exceeding
371 // 4096.
372 //
373 //================================================
374
375 static void cyblafb_copyarea(struct fb_info *info, const struct fb_copyarea *ca)
376 {
377 u32 s1, s2, d1, d2, direction;
378
379 KD_GRAPHICS_RETURN();
380
381 s1 = point(ca->sx, 0);
382 s2 = point(ca->sx + ca->width - 1, ca->height - 1);
383 d1 = point(ca->dx, 0);
384 d2 = point(ca->dx + ca->width - 1, ca->height - 1);
385
386 if ((ca->sy > ca->dy) || ((ca->sy == ca->dy) && (ca->sx > ca->dx)))
387 direction = 0;
388 else
389 direction = 2;
390
391 out32(GEB8, basestride | ((ca->dy * info->var.xres_virtual *
392 info->var.bits_per_pixel) >> 6));
393 out32(GEC8, basestride | ((ca->sy * info->var.xres_virtual *
394 info->var.bits_per_pixel) >> 6));
395 out32(GE44, 0xa0000000 | 1 << 19 | 1 << 2 | direction);
396 out32(GE00, direction ? s2 : s1);
397 out32(GE04, direction ? s1 : s2);
398 out32(GE08, direction ? d2 : d1);
399 out32(GE0C, direction ? d1 : d2);
400 }
401
402 //=======================================================================
403 //
404 // Cyberblade specific imageblit
405 //
406 // Accelerated for the most usual case, blitting 1 - bit deep
407 // character images. Everything else is passed to the generic imageblit
408 // unless it is so insane that it is better to printk an alert.
409 //
410 // Hardware bug: _Never_ blit across pixel column 2048, that will lock
411 // the system. We split those blit requests into three blitting
412 // operations.
413 //
414 //=======================================================================
415
416 static void cyblafb_imageblit(struct fb_info *info,
417 const struct fb_image *image)
418 {
419 u32 fgcol, bgcol;
420 u32 *pd = (u32 *) image->data;
421 u32 bpp = info->var.bits_per_pixel;
422
423 KD_GRAPHICS_RETURN();
424
425 // Used only for drawing the penguine (image->depth > 1)
426 if (image->depth != 1) {
427 cfb_imageblit(info, image);
428 return;
429 }
430 // That should never happen, but it would be fatal
431 if (image->width == 0 || image->height == 0) {
432 output("imageblit: width/height 0 detected\n");
433 return;
434 }
435
436 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
437 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
438 fgcol = ((u32 *) (info->pseudo_palette))[image->fg_color];
439 bgcol = ((u32 *) (info->pseudo_palette))[image->bg_color];
440 } else {
441 fgcol = image->fg_color;
442 bgcol = image->bg_color;
443 }
444
445 switch (bpp) {
446 case 8:
447 fgcol |= fgcol << 8;
448 bgcol |= bgcol << 8;
449 case 16:
450 fgcol |= fgcol << 16;
451 bgcol |= bgcol << 16;
452 default:
453 break;
454 }
455
456 out32(GEB8, basestride | ((image->dy * info->var.xres_virtual *
457 bpp) >> 6));
458 out32(GE60, fgcol);
459 out32(GE64, bgcol);
460
461 if (!(image->dx < 2048 && (image->dx + image->width - 1) >= 2048)) {
462 u32 dds = ((image->width + 31) >> 5) * image->height;
463 out32(GE44, 0xa0000000 | 1 << 20 | 1 << 19);
464 out32(GE08, point(image->dx, 0));
465 out32(GE0C, point(image->dx + image->width - 1,
466 image->height - 1));
467 while (dds--)
468 out32(GE9C, *pd++);
469 } else {
470 int i, j;
471 u32 ddstotal = (image->width + 31) >> 5;
472 u32 ddsleft = (2048 - image->dx + 31) >> 5;
473 u32 skipleft = ddstotal - ddsleft;
474
475 out32(GE44, 0xa0000000 | 1 << 20 | 1 << 19);
476 out32(GE08, point(image->dx, 0));
477 out32(GE0C, point(2048 - 1, image->height - 1));
478 for (i = 0; i < image->height; i++) {
479 for (j = 0; j < ddsleft; j++)
480 out32(GE9C, *pd++);
481 pd += skipleft;
482 }
483
484 if (image->dx % 32) {
485 out32(GE44, 0xa0000000 | 1 << 20 | 1 << 19);
486 out32(GE08, point(2048, 0));
487 if (image->width > ddsleft << 5)
488 out32(GE0C, point(image->dx + (ddsleft << 5) -
489 1, image->height - 1));
490 else
491 out32(GE0C, point(image->dx + image->width - 1,
492 image->height - 1));
493 pd = ((u32 *) image->data) + ddstotal - skipleft - 1;
494 for (i = 0; i < image->height; i++) {
495 out32(GE9C, swab32(swab32(*pd) << ((32 -
496 (image->dx & 31)) & 31)));
497 pd += ddstotal;
498 }
499 }
500
501 if (skipleft) {
502 out32(GE44, 0xa0000000 | 1 << 20 | 1 << 19);
503 out32(GE08, point(image->dx + (ddsleft << 5), 0));
504 out32(GE0C, point(image->dx + image->width - 1,
505 image->height - 1));
506 pd = (u32 *) image->data;
507 for (i = 0; i < image->height; i++) {
508 pd += ddsleft;
509 for (j = 0; j < skipleft; j++)
510 out32(GE9C, *pd++);
511 }
512 }
513 }
514 }
515
516 //==========================================================
517 //
518 // Check if video mode is acceptable. We change var->??? if
519 // video mode is slightly off or return error otherwise.
520 // info->??? must not be changed!
521 //
522 //==========================================================
523
524 static int cyblafb_check_var(struct fb_var_screeninfo *var,
525 struct fb_info *info)
526 {
527 int bpp = var->bits_per_pixel;
528
529 //
530 // we try to support 8, 16, 24 and 32 bpp modes,
531 // default to 8
532 //
533 // there is a 24 bpp mode, but for now we change requests to 32 bpp
534 // (This is what tridentfb does ... will be changed in the future)
535 //
536 //
537 if (bpp % 8 != 0 || bpp < 8 || bpp > 32)
538 bpp = 8;
539 if (bpp == 24)
540 bpp = var->bits_per_pixel = 32;
541
542 //
543 // interlaced modes are broken, fail if one is requested
544 //
545 if (var->vmode & FB_VMODE_INTERLACED)
546 return -EINVAL;
547
548 //
549 // fail if requested resolution is higher than physical
550 // flatpanel resolution
551 //
552 if ((displaytype == DISPLAY_FP) && nativex && var->xres > nativex)
553 return -EINVAL;
554
555 //
556 // we do not allow vclk to exceed 230 MHz. If the requested
557 // vclk is too high, we default to 200 MHz
558 //
559 if ((bpp == 32 ? 200000000 : 100000000) / var->pixclock > 23000)
560 var->pixclock = (bpp == 32 ? 200000000 : 100000000) / 20000;
561
562 //
563 // enforce (h|v)sync_len limits
564 //
565 var->hsync_len &= ~7;
566 if(var->hsync_len > 248)
567 var->hsync_len = 248;
568
569 var->vsync_len &= 15;
570
571 //
572 // Enforce horizontal and vertical hardware limits.
573 // 1600x1200 is mentioned as a maximum, but higher resolutions could
574 // work with slow refresh, small margins and short sync.
575 //
576 var->xres &= ~7;
577
578 if (((var->xres + var->left_margin + var->right_margin +
579 var->hsync_len) > (bpp == 32 ? 2040 : 4088)) ||
580 ((var->yres + var->upper_margin + var->lower_margin +
581 var->vsync_len) > 2047))
582 return -EINVAL;
583
584 if ((var->xres > 1600) || (var->yres > 1200))
585 output("Mode %dx%d exceeds documented limits.\n",
586 var->xres, var->yres);
587 //
588 // try to be smart about (x|y)res_virtual problems.
589 //
590 if (var->xres > var->xres_virtual)
591 var->xres_virtual = var->xres;
592 if (var->yres > var->yres_virtual)
593 var->yres_virtual = var->yres;
594
595 if (bpp == 8 || bpp == 16) {
596 if (var->xres_virtual > 4088)
597 var->xres_virtual = 4088;
598 } else {
599 if (var->xres_virtual > 2040)
600 var->xres_virtual = 2040;
601 }
602 var->xres_virtual &= ~7;
603 while (var->xres_virtual * var->yres_virtual * bpp / 8 >
604 info->fix.smem_len) {
605 if (var->yres_virtual > var->yres)
606 var->yres_virtual--;
607 else if (var->xres_virtual > var->xres)
608 var->xres_virtual -= 8;
609 else
610 return -EINVAL;
611 }
612
613 switch (bpp) {
614 case 8:
615 var->red.offset = 0;
616 var->green.offset = 0;
617 var->blue.offset = 0;
618 var->red.length = 6;
619 var->green.length = 6;
620 var->blue.length = 6;
621 break;
622 case 16:
623 var->red.offset = 11;
624 var->green.offset = 5;
625 var->blue.offset = 0;
626 var->red.length = 5;
627 var->green.length = 6;
628 var->blue.length = 5;
629 break;
630 case 32:
631 var->red.offset = 16;
632 var->green.offset = 8;
633 var->blue.offset = 0;
634 var->red.length = 8;
635 var->green.length = 8;
636 var->blue.length = 8;
637 break;
638 default:
639 return -EINVAL;
640 }
641
642 return 0;
643 }
644
645 //=====================================================================
646 //
647 // Pan the display
648 //
649 // The datasheets defines crt start address to be 20 bits wide and
650 // to be programmed to CR0C, CR0D, CR1E and CR27. Actually there is
651 // CR2B[5] as an undocumented extension bit. Epia BIOS 2.07 does use
652 // it, so it is also safe to be used here. BTW: datasheet CR0E on page
653 // 90 really is CR1E, the real CRE is documented on page 72.
654 //
655 // BUT:
656 //
657 // As of internal version 0.60 we do not use vga panning any longer.
658 // Vga panning did not allow us the use of all available video memory
659 // and thus prevented ywrap scrolling. We do use the "right view"
660 // register now.
661 //
662 //
663 //=====================================================================
664
665 static int cyblafb_pan_display(struct fb_var_screeninfo *var,
666 struct fb_info *info)
667 {
668 KD_GRAPHICS_RETURN(0);
669
670 info->var.xoffset = var->xoffset;
671 info->var.yoffset = var->yoffset;
672 out32(GE10, 0x80000000 | ((var->xoffset + (var->yoffset *
673 var->xres_virtual)) * var->bits_per_pixel / 32));
674 return 0;
675 }
676
677 //============================================
678 //
679 // This will really help in case of a bug ...
680 // dump most gaphics core registers.
681 //
682 //============================================
683
684 static void regdump(struct cyblafb_par *par)
685 {
686 int i;
687
688 if (verbosity < 2)
689 return;
690
691 printk("\n");
692 for (i = 0; i <= 0xff; i++) {
693 outb(i, 0x3d4);
694 printk("CR%02x=%02x ", i, inb(0x3d5));
695 if (i % 16 == 15)
696 printk("\n");
697 }
698
699 outb(0x30, 0x3ce);
700 outb(inb(0x3cf) | 0x40, 0x3cf);
701 for (i = 0; i <= 0x1f; i++) {
702 if (i == 0 || (i > 2 && i < 8) || i == 0x10 || i == 0x11
703 || i == 0x16) {
704 outb(i, 0x3d4);
705 printk("CR%02x=%02x ", i, inb(0x3d5));
706 } else
707 printk("------- ");
708 if (i % 16 == 15)
709 printk("\n");
710 }
711 outb(0x30, 0x3ce);
712 outb(inb(0x3cf) & 0xbf, 0x3cf);
713
714 printk("\n");
715 for (i = 0; i <= 0x7f; i++) {
716 outb(i, 0x3ce);
717 printk("GR%02x=%02x ", i, inb(0x3cf));
718 if (i % 16 == 15)
719 printk("\n");
720 }
721
722 printk("\n");
723 for (i = 0; i <= 0xff; i++) {
724 outb(i, 0x3c4);
725 printk("SR%02x=%02x ", i, inb(0x3c5));
726 if (i % 16 == 15)
727 printk("\n");
728 }
729
730 printk("\n");
731 for (i = 0; i <= 0x1F; i++) {
732 inb(0x3da); // next access is index!
733 outb(i, 0x3c0);
734 printk("AR%02x=%02x ", i, inb(0x3c1));
735 if (i % 16 == 15)
736 printk("\n");
737 }
738 printk("\n");
739
740 inb(0x3DA); // reset internal flag to 3c0 index
741 outb(0x20, 0x3C0); // enable attr
742
743 return;
744 }
745
746 //=======================================================================
747 //
748 // Save State
749 //
750 // This function is called while a switch to KD_TEXT is in progress,
751 // before any of the other functions are called.
752 //
753 //=======================================================================
754
755 static void cyblafb_save_state(struct fb_info *info)
756 {
757 struct cyblafb_par *par = info->par;
758 if (verbosity > 0)
759 output("Switching to KD_TEXT\n");
760 disabled = 0;
761 regdump(par);
762 enable_mmio();
763 return;
764 }
765
766 //=======================================================================
767 //
768 // Restore State
769 //
770 // This function is called while a switch to KD_GRAPHICS is in progress,
771 // We have to turn on vga style panning registers again because the
772 // trident driver of X does not know about GE10.
773 //
774 //=======================================================================
775
776 static void cyblafb_restore_state(struct fb_info *info)
777 {
778 if (verbosity > 0)
779 output("Switching to KD_GRAPHICS\n");
780 out32(GE10, 0);
781 disabled = 1;
782 return;
783 }
784
785 //======================================
786 //
787 // Set hardware to requested video mode
788 //
789 //======================================
790
791 static int cyblafb_set_par(struct fb_info *info)
792 {
793 struct cyblafb_par *par = info->par;
794 u32 htotal, hdispend, hsyncstart, hsyncend, hblankstart,
795 hblankend, preendfetch, vtotal, vdispend, vsyncstart,
796 vsyncend, vblankstart, vblankend;
797 struct fb_var_screeninfo *var = &info->var;
798 int bpp = var->bits_per_pixel;
799 int i;
800
801 KD_GRAPHICS_RETURN(0);
802
803 if (verbosity > 0)
804 output("Switching to new mode: "
805 "fbset -g %d %d %d %d %d -t %d %d %d %d %d %d %d\n",
806 var->xres, var->yres, var->xres_virtual,
807 var->yres_virtual, var->bits_per_pixel, var->pixclock,
808 var->left_margin, var->right_margin, var->upper_margin,
809 var->lower_margin, var->hsync_len, var->vsync_len);
810
811 htotal = (var->xres + var->left_margin + var->right_margin +
812 var->hsync_len) / 8 - 5;
813 hdispend = var->xres / 8 - 1;
814 hsyncstart = (var->xres + var->right_margin) / 8;
815 hsyncend = var->hsync_len / 8;
816 hblankstart = hdispend + 1;
817 hblankend = htotal + 3; // should be htotal + 5, bios does it this way
818 preendfetch = ((var->xres >> 3) + 1) * ((bpp + 1) >> 3);
819
820 vtotal = var->yres + var->upper_margin + var->lower_margin +
821 var->vsync_len - 2;
822 vdispend = var->yres - 1;
823 vsyncstart = var->yres + var->lower_margin;
824 vblankstart = var->yres;
825 vblankend = vtotal; // should be vtotal + 2, but bios does it this way
826 vsyncend = var->vsync_len;
827
828 enable_mmio(); // necessary! ... check X ...
829
830 write3X4(CR11, read3X4(CR11) & 0x7F); // unlock cr00 .. cr07
831
832 write3CE(GR30, 8);
833
834 if ((displaytype == DISPLAY_FP) && var->xres < nativex) {
835
836 // stretch or center ?
837
838 out8(0x3C2, 0xEB);
839
840 write3CE(GR30, read3CE(GR30) | 0x81); // shadow mode on
841
842 if (center) {
843 write3CE(GR52, (read3CE(GR52) & 0x7C) | 0x80);
844 write3CE(GR53, (read3CE(GR53) & 0x7C) | 0x80);
845 } else if (stretch) {
846 write3CE(GR5D, 0);
847 write3CE(GR52, (read3CE(GR52) & 0x7C) | 1);
848 write3CE(GR53, (read3CE(GR53) & 0x7C) | 1);
849 }
850
851 } else {
852 out8(0x3C2, 0x2B);
853 write3CE(GR30, 8);
854 }
855
856 //
857 // Setup CRxx regs
858 //
859
860 write3X4(CR00, htotal & 0xFF);
861 write3X4(CR01, hdispend & 0xFF);
862 write3X4(CR02, hblankstart & 0xFF);
863 write3X4(CR03, hblankend & 0x1F);
864 write3X4(CR04, hsyncstart & 0xFF);
865 write3X4(CR05, (hsyncend & 0x1F) | ((hblankend & 0x20) << 2));
866 write3X4(CR06, vtotal & 0xFF);
867 write3X4(CR07, (vtotal & 0x100) >> 8 |
868 (vdispend & 0x100) >> 7 |
869 (vsyncstart & 0x100) >> 6 |
870 (vblankstart & 0x100) >> 5 |
871 0x10 |
872 (vtotal & 0x200) >> 4 |
873 (vdispend & 0x200) >> 3 | (vsyncstart & 0x200) >> 2);
874 write3X4(CR08, 0);
875 write3X4(CR09, (vblankstart & 0x200) >> 4 | 0x40 | // FIX !!!
876 ((info->var.vmode & FB_VMODE_DOUBLE) ? 0x80 : 0));
877 write3X4(CR0A, 0); // Init to some reasonable default
878 write3X4(CR0B, 0); // Init to some reasonable default
879 write3X4(CR0C, 0); // Offset 0
880 write3X4(CR0D, 0); // Offset 0
881 write3X4(CR0E, 0); // Init to some reasonable default
882 write3X4(CR0F, 0); // Init to some reasonable default
883 write3X4(CR10, vsyncstart & 0xFF);
884 write3X4(CR11, (vsyncend & 0x0F));
885 write3X4(CR12, vdispend & 0xFF);
886 write3X4(CR13, ((info->var.xres_virtual * bpp) / (4 * 16)) & 0xFF);
887 write3X4(CR14, 0x40); // double word mode
888 write3X4(CR15, vblankstart & 0xFF);
889 write3X4(CR16, vblankend & 0xFF);
890 write3X4(CR17, 0xE3);
891 write3X4(CR18, 0xFF);
892 // CR19: needed for interlaced modes ... ignore it for now
893 write3X4(CR1A, 0x07); // Arbitration Control Counter 1
894 write3X4(CR1B, 0x07); // Arbitration Control Counter 2
895 write3X4(CR1C, 0x07); // Arbitration Control Counter 3
896 write3X4(CR1D, 0x00); // Don't know, doesn't hurt ; -)
897 write3X4(CR1E, (info->var.vmode & FB_VMODE_INTERLACED) ? 0x84 : 0x80);
898 // CR1F: do not set, contains BIOS info about memsize
899 write3X4(CR20, 0x20); // enabe wr buf, disable 16bit planar mode
900 write3X4(CR21, 0x20); // enable linear memory access
901 // CR22: RO cpu latch readback
902 // CR23: ???
903 // CR24: RO AR flag state
904 // CR25: RAMDAC rw timing, pclk buffer tristate control ????
905 // CR26: ???
906 write3X4(CR27, (vdispend & 0x400) >> 6 |
907 (vsyncstart & 0x400) >> 5 |
908 (vblankstart & 0x400) >> 4 |
909 (vtotal & 0x400) >> 3 |
910 0x8);
911 // CR28: ???
912 write3X4(CR29, (read3X4(CR29) & 0xCF) | ((((info->var.xres_virtual *
913 bpp) / (4 * 16)) & 0x300) >> 4));
914 write3X4(CR2A, read3X4(CR2A) | 0x40);
915 write3X4(CR2B, (htotal & 0x100) >> 8 |
916 (hdispend & 0x100) >> 7 |
917 // (0x00 & 0x100) >> 6 | hinterlace para bit 8 ???
918 (hsyncstart & 0x100) >> 5 |
919 (hblankstart & 0x100) >> 4);
920 // CR2C: ???
921 // CR2D: initialized in cyblafb_setup_GE()
922 write3X4(CR2F, 0x92); // conservative, better signal quality
923 // CR30: reserved
924 // CR31: reserved
925 // CR32: reserved
926 // CR33: reserved
927 // CR34: disabled in CR36
928 // CR35: disabled in CR36
929 // CR36: initialized in cyblafb_setup_GE
930 // CR37: i2c, ignore for now
931 write3X4(CR38, (bpp == 8) ? 0x00 : //
932 (bpp == 16) ? 0x05 : // highcolor
933 (bpp == 24) ? 0x29 : // packed 24bit truecolor
934 (bpp == 32) ? 0x09 : 0); // truecolor, 16 bit pixelbus
935 write3X4(CR39, 0x01 | // MMIO enable
936 (pcirb ? 0x02 : 0) | // pci read burst enable
937 (pciwb ? 0x04 : 0)); // pci write burst enable
938 write3X4(CR55, 0x1F | // pci clocks * 2 for STOP# during 1st data phase
939 (pcirr ? 0x40 : 0) | // pci read retry enable
940 (pciwr ? 0x80 : 0)); // pci write retry enable
941 write3X4(CR56, preendfetch >> 8 < 2 ? (preendfetch >> 8 & 0x01) | 2
942 : 0);
943 write3X4(CR57, preendfetch >> 8 < 2 ? preendfetch & 0xff : 0);
944 write3X4(CR58, 0x82); // Bios does this .... don't know more
945 //
946 // Setup SRxx regs
947 //
948 write3C4(SR00, 3);
949 write3C4(SR01, 1); //set char clock 8 dots wide
950 write3C4(SR02, 0x0F); //enable 4 maps needed in chain4 mode
951 write3C4(SR03, 0); //no character map select
952 write3C4(SR04, 0x0E); //memory mode: ext mem, even, chain4
953
954 out8(0x3C4, 0x0b);
955 in8(0x3C5); // Set NEW mode
956 write3C4(SR0D, 0x00); // test ... check
957
958 set_vclk(par, (bpp == 32 ? 200000000 : 100000000)
959 / info->var.pixclock); //SR18, SR19
960
961 //
962 // Setup GRxx regs
963 //
964 write3CE(GR00, 0x00); // test ... check
965 write3CE(GR01, 0x00); // test ... check
966 write3CE(GR02, 0x00); // test ... check
967 write3CE(GR03, 0x00); // test ... check
968 write3CE(GR04, 0x00); // test ... check
969 write3CE(GR05, 0x40); // no CGA compat, allow 256 col
970 write3CE(GR06, 0x05); // graphics mode
971 write3CE(GR07, 0x0F); // planes?
972 write3CE(GR08, 0xFF); // test ... check
973 write3CE(GR0F, (bpp == 32) ? 0x1A : 0x12); // vclk / 2 if 32bpp, chain4
974 write3CE(GR20, 0xC0); // test ... check
975 write3CE(GR2F, 0xA0); // PCLK = VCLK, no skew,
976
977 //
978 // Setup ARxx regs
979 //
980 for (i = 0; i < 0x10; i++) // set AR00 .. AR0f
981 write3C0(i, i);
982 write3C0(AR10, 0x41); // graphics mode and support 256 color modes
983 write3C0(AR12, 0x0F); // planes
984 write3C0(AR13, 0); // horizontal pel panning
985 in8(0x3DA); // reset internal flag to 3c0 index
986 out8(0x3C0, 0x20); // enable attr
987
988 //
989 // Setup hidden RAMDAC command register
990 //
991 in8(0x3C8); // these reads are
992 in8(0x3C6); // necessary to
993 in8(0x3C6); // unmask the RAMDAC
994 in8(0x3C6); // command reg, otherwise
995 in8(0x3C6); // we would write the pixelmask reg!
996 out8(0x3C6, (bpp == 8) ? 0x00 : // 256 colors
997 (bpp == 15) ? 0x10 : //
998 (bpp == 16) ? 0x30 : // hicolor
999 (bpp == 24) ? 0xD0 : // truecolor
1000 (bpp == 32) ? 0xD0 : 0); // truecolor
1001 in8(0x3C8);
1002
1003 //
1004 // GR31 is not mentioned in the datasheet
1005 //
1006 if (displaytype == DISPLAY_FP)
1007 write3CE(GR31, (read3CE(GR31) & 0x8F) |
1008 ((info->var.yres > 1024) ? 0x50 :
1009 (info->var.yres > 768) ? 0x30 :
1010 (info->var.yres > 600) ? 0x20 :
1011 (info->var.yres > 480) ? 0x10 : 0));
1012
1013 info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR
1014 : FB_VISUAL_TRUECOLOR;
1015 info->fix.line_length = info->var.xres_virtual * (bpp >> 3);
1016 info->cmap.len = (bpp == 8) ? 256 : 16;
1017
1018 //
1019 // init acceleration engine
1020 //
1021 cyblafb_setup_GE(info->var.xres_virtual, info->var.bits_per_pixel);
1022
1023 //
1024 // Set/clear flags to allow proper scroll mode selection.
1025 //
1026 if (var->xres == var->xres_virtual)
1027 info->flags &= ~FBINFO_HWACCEL_XPAN;
1028 else
1029 info->flags |= FBINFO_HWACCEL_XPAN;
1030
1031 if (var->yres == var->yres_virtual)
1032 info->flags &= ~FBINFO_HWACCEL_YPAN;
1033 else
1034 info->flags |= FBINFO_HWACCEL_YPAN;
1035
1036 if (info->fix.smem_len !=
1037 var->xres_virtual * var->yres_virtual * bpp / 8)
1038 info->flags &= ~FBINFO_HWACCEL_YWRAP;
1039 else
1040 info->flags |= FBINFO_HWACCEL_YWRAP;
1041
1042 regdump(par);
1043
1044 return 0;
1045 }
1046
1047 //========================
1048 //
1049 // Set one color register
1050 //
1051 //========================
1052
1053 static int cyblafb_setcolreg(unsigned regno, unsigned red, unsigned green,
1054 unsigned blue, unsigned transp,
1055 struct fb_info *info)
1056 {
1057 int bpp = info->var.bits_per_pixel;
1058
1059 KD_GRAPHICS_RETURN(0);
1060
1061 if (regno >= info->cmap.len)
1062 return 1;
1063
1064 if (bpp == 8) {
1065 out8(0x3C6, 0xFF);
1066 out8(0x3C8, regno);
1067 out8(0x3C9, red >> 10);
1068 out8(0x3C9, green >> 10);
1069 out8(0x3C9, blue >> 10);
1070
1071 } else if (regno < 16) {
1072 if (bpp == 16) // RGB 565
1073 ((u32 *) info->pseudo_palette)[regno] =
1074 (red & 0xF800) |
1075 ((green & 0xFC00) >> 5) |
1076 ((blue & 0xF800) >> 11);
1077 else if (bpp == 32) // ARGB 8888
1078 ((u32 *) info->pseudo_palette)[regno] =
1079 ((transp & 0xFF00) << 16) |
1080 ((red & 0xFF00) << 8) |
1081 ((green & 0xFF00)) | ((blue & 0xFF00) >> 8);
1082 }
1083
1084 return 0;
1085 }
1086
1087 //==========================================================
1088 //
1089 // Try blanking the screen. For flat panels it does nothing
1090 //
1091 //==========================================================
1092
1093 static int cyblafb_blank(int blank_mode, struct fb_info *info)
1094 {
1095 unsigned char PMCont, DPMSCont;
1096
1097 KD_GRAPHICS_RETURN(0);
1098
1099 if (displaytype == DISPLAY_FP)
1100 return 0;
1101
1102 out8(0x83C8, 0x04); // DPMS Control
1103 PMCont = in8(0x83C6) & 0xFC;
1104
1105 DPMSCont = read3CE(GR23) & 0xFC;
1106
1107 switch (blank_mode) {
1108 case FB_BLANK_UNBLANK: // Screen: On, HSync: On, VSync: On
1109 case FB_BLANK_NORMAL: // Screen: Off, HSync: On, VSync: On
1110 PMCont |= 0x03;
1111 DPMSCont |= 0x00;
1112 break;
1113 case FB_BLANK_HSYNC_SUSPEND: // Screen: Off, HSync: Off, VSync: On
1114 PMCont |= 0x02;
1115 DPMSCont |= 0x01;
1116 break;
1117 case FB_BLANK_VSYNC_SUSPEND: // Screen: Off, HSync: On, VSync: Off
1118 PMCont |= 0x02;
1119 DPMSCont |= 0x02;
1120 break;
1121 case FB_BLANK_POWERDOWN: // Screen: Off, HSync: Off, VSync: Off
1122 PMCont |= 0x00;
1123 DPMSCont |= 0x03;
1124 break;
1125 }
1126
1127 write3CE(GR23, DPMSCont);
1128 out8(0x83C8, 4);
1129 out8(0x83C6, PMCont);
1130 //
1131 // let fbcon do a softblank for us
1132 //
1133 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
1134 }
1135
1136 static struct fb_ops cyblafb_ops __devinitdata = {
1137 .owner = THIS_MODULE,
1138 .fb_setcolreg = cyblafb_setcolreg,
1139 .fb_pan_display = cyblafb_pan_display,
1140 .fb_blank = cyblafb_blank,
1141 .fb_check_var = cyblafb_check_var,
1142 .fb_set_par = cyblafb_set_par,
1143 .fb_fillrect = cyblafb_fillrect,
1144 .fb_copyarea = cyblafb_copyarea,
1145 .fb_imageblit = cyblafb_imageblit,
1146 .fb_sync = cyblafb_sync,
1147 .fb_restore_state = cyblafb_restore_state,
1148 .fb_save_state = cyblafb_save_state,
1149 };
1150
1151 //==========================================================================
1152 //
1153 // getstartupmode() decides about the inital video mode
1154 //
1155 // There is no reason to use modedb, a lot of video modes there would
1156 // need altered timings to display correctly. So I decided that it is much
1157 // better to provide a limited optimized set of modes plus the option of
1158 // using the mode in effect at startup time (might be selected using the
1159 // vga=??? parameter). After that the user might use fbset to select any
1160 // mode he likes, check_var will not try to alter geometry parameters as
1161 // it would be necessary otherwise.
1162 //
1163 //==========================================================================
1164
1165 static int __devinit getstartupmode(struct fb_info *info)
1166 {
1167 u32 htotal, hdispend, hsyncstart, hsyncend, hblankstart, hblankend,
1168 vtotal, vdispend, vsyncstart, vsyncend, vblankstart, vblankend,
1169 cr00, cr01, cr02, cr03, cr04, cr05, cr2b,
1170 cr06, cr07, cr09, cr10, cr11, cr12, cr15, cr16, cr27,
1171 cr38, sr0d, sr18, sr19, gr0f, fi, pxclkdiv, vclkdiv, tmp, i;
1172
1173 struct modus {
1174 int xres; int vxres; int yres; int vyres;
1175 int bpp; int pxclk;
1176 int left_margin; int right_margin;
1177 int upper_margin; int lower_margin;
1178 int hsync_len; int vsync_len;
1179 } modedb[5] = {
1180 {
1181 0, 2048, 0, 4096, 0, 0, 0, 0, 0, 0, 0, 0}, {
1182 640, 2048, 480, 4096, 0, 0, -40, 24, 17, 0, 216, 3}, {
1183 800, 2048, 600, 4096, 0, 0, 96, 24, 14, 0, 136, 11}, {
1184 1024, 2048, 768, 4096, 0, 0, 144, 24, 29, 0, 120, 3}, {
1185 1280, 2048, 1024, 4096, 0, 0, 232, 16, 39, 0, 160, 3}
1186 };
1187
1188 outb(0x00, 0x3d4); cr00 = inb(0x3d5);
1189 outb(0x01, 0x3d4); cr01 = inb(0x3d5);
1190 outb(0x02, 0x3d4); cr02 = inb(0x3d5);
1191 outb(0x03, 0x3d4); cr03 = inb(0x3d5);
1192 outb(0x04, 0x3d4); cr04 = inb(0x3d5);
1193 outb(0x05, 0x3d4); cr05 = inb(0x3d5);
1194 outb(0x06, 0x3d4); cr06 = inb(0x3d5);
1195 outb(0x07, 0x3d4); cr07 = inb(0x3d5);
1196 outb(0x09, 0x3d4); cr09 = inb(0x3d5);
1197 outb(0x10, 0x3d4); cr10 = inb(0x3d5);
1198 outb(0x11, 0x3d4); cr11 = inb(0x3d5);
1199 outb(0x12, 0x3d4); cr12 = inb(0x3d5);
1200 outb(0x15, 0x3d4); cr15 = inb(0x3d5);
1201 outb(0x16, 0x3d4); cr16 = inb(0x3d5);
1202 outb(0x27, 0x3d4); cr27 = inb(0x3d5);
1203 outb(0x2b, 0x3d4); cr2b = inb(0x3d5);
1204 outb(0x38, 0x3d4); cr38 = inb(0x3d5);
1205
1206 outb(0x0b, 0x3c4);
1207 inb(0x3c5);
1208
1209 outb(0x0d, 0x3c4); sr0d = inb(0x3c5);
1210 outb(0x18, 0x3c4); sr18 = inb(0x3c5);
1211 outb(0x19, 0x3c4); sr19 = inb(0x3c5);
1212 outb(0x0f, 0x3ce); gr0f = inb(0x3cf);
1213
1214 htotal = cr00 | (cr2b & 0x01) << 8;
1215 hdispend = cr01 | (cr2b & 0x02) << 7;
1216 hblankstart = cr02 | (cr2b & 0x10) << 4;
1217 hblankend = (cr03 & 0x1f) | (cr05 & 0x80) >> 2;
1218 hsyncstart = cr04 | (cr2b & 0x08) << 5;
1219 hsyncend = cr05 & 0x1f;
1220
1221 modedb[0].xres = hblankstart * 8;
1222 modedb[0].hsync_len = hsyncend * 8;
1223 modedb[0].right_margin = hsyncstart * 8 - modedb[0].xres;
1224 modedb[0].left_margin = (htotal + 5) * 8 - modedb[0].xres -
1225 modedb[0].right_margin - modedb[0].hsync_len;
1226
1227 vtotal = cr06 | (cr07 & 0x01) << 8 | (cr07 & 0x20) << 4
1228 | (cr27 & 0x80) << 3;
1229 vdispend = cr12 | (cr07 & 0x02) << 7 | (cr07 & 0x40) << 3
1230 | (cr27 & 0x10) << 6;
1231 vsyncstart = cr10 | (cr07 & 0x04) << 6 | (cr07 & 0x80) << 2
1232 | (cr27 & 0x20) << 5;
1233 vsyncend = cr11 & 0x0f;
1234 vblankstart = cr15 | (cr07 & 0x08) << 5 | (cr09 & 0x20) << 4
1235 | (cr27 & 0x40) << 4;
1236 vblankend = cr16;
1237
1238 modedb[0].yres = vdispend + 1;
1239 modedb[0].vsync_len = vsyncend;
1240 modedb[0].lower_margin = vsyncstart - modedb[0].yres;
1241 modedb[0].upper_margin = vtotal - modedb[0].yres -
1242 modedb[0].lower_margin - modedb[0].vsync_len + 2;
1243
1244 tmp = cr38 & 0x3c;
1245 modedb[0].bpp = tmp == 0 ? 8 : tmp == 4 ? 16 : tmp == 28 ? 24 :
1246 tmp == 8 ? 32 : 8;
1247
1248 fi = ((5864727 * (sr18 + 8)) /
1249 (((sr19 & 0x3f) + 2) * (1 << ((sr19 & 0xc0) >> 6)))) >> 12;
1250 pxclkdiv = ((gr0f & 0x08) >> 3 | (gr0f & 0x40) >> 5) + 1;
1251 tmp = sr0d & 0x06;
1252 vclkdiv = tmp == 0 ? 2 : tmp == 2 ? 4 : tmp == 4 ? 8 : 3; // * 2 !
1253 modedb[0].pxclk = ((100000000 * pxclkdiv * vclkdiv) >> 1) / fi;
1254
1255 if (verbosity > 0)
1256 output("detected startup mode: "
1257 "fbset -g %d %d %d ??? %d -t %d %d %d %d %d %d %d\n",
1258 modedb[0].xres, modedb[0].yres, modedb[0].xres,
1259 modedb[0].bpp, modedb[0].pxclk, modedb[0].left_margin,
1260 modedb[0].right_margin, modedb[0].upper_margin,
1261 modedb[0].lower_margin, modedb[0].hsync_len,
1262 modedb[0].vsync_len);
1263
1264 //
1265 // We use this goto target in case of a failed check_var. No, I really
1266 // do not want to do it in another way!
1267 //
1268
1269 tryagain:
1270
1271 i = (mode == NULL) ? 0 :
1272 !strncmp(mode, "640x480", 7) ? 1 :
1273 !strncmp(mode, "800x600", 7) ? 2 :
1274 !strncmp(mode, "1024x768", 8) ? 3 :
1275 !strncmp(mode, "1280x1024", 9) ? 4 : 0;
1276
1277 ref = (ref < 50) ? 50 : (ref > 85) ? 85 : ref;
1278
1279 if (i == 0) {
1280 info->var.pixclock = modedb[i].pxclk;
1281 info->var.bits_per_pixel = modedb[i].bpp;
1282 } else {
1283 info->var.pixclock = (100000000 /
1284 ((modedb[i].left_margin +
1285 modedb[i].xres +
1286 modedb[i].right_margin +
1287 modedb[i].hsync_len) *
1288 (modedb[i].upper_margin +
1289 modedb[i].yres +
1290 modedb[i].lower_margin +
1291 modedb[i].vsync_len) * ref / 10000));
1292 info->var.bits_per_pixel = bpp;
1293 }
1294
1295 info->var.left_margin = modedb[i].left_margin;
1296 info->var.right_margin = modedb[i].right_margin;
1297 info->var.xres = modedb[i].xres;
1298 if (!(modedb[i].yres == 1280 && modedb[i].bpp == 32))
1299 info->var.xres_virtual = modedb[i].vxres;
1300 else
1301 info->var.xres_virtual = modedb[i].xres;
1302 info->var.xoffset = 0;
1303 info->var.hsync_len = modedb[i].hsync_len;
1304 info->var.upper_margin = modedb[i].upper_margin;
1305 info->var.yres = modedb[i].yres;
1306 info->var.yres_virtual = modedb[i].vyres;
1307 info->var.yoffset = 0;
1308 info->var.lower_margin = modedb[i].lower_margin;
1309 info->var.vsync_len = modedb[i].vsync_len;
1310 info->var.sync = 0;
1311 info->var.vmode = FB_VMODE_NONINTERLACED;
1312
1313 if (cyblafb_check_var(&info->var, info)) {
1314 // 640x480 - 8@75 should really never fail. One case would
1315 // be fp == 1 and nativex < 640 ... give up then
1316 if (i == 1 && bpp == 8 && ref == 75) {
1317 output("Can't find a valid mode :-(\n");
1318 return -EINVAL;
1319 }
1320 // Our detected mode is unlikely to fail. If it does,
1321 // try 640x480 - 8@75 ...
1322 if (i == 0) {
1323 mode = "640x480";
1324 bpp = 8;
1325 ref = 75;
1326 output("Detected mode failed check_var! "
1327 "Trying 640x480 - 8@75\n");
1328 goto tryagain;
1329 }
1330 // A specified video mode failed for some reason.
1331 // Try the startup mode first
1332 output("Specified mode '%s' failed check! "
1333 "Falling back to startup mode.\n", mode);
1334 mode = NULL;
1335 goto tryagain;
1336 }
1337
1338 return 0;
1339 }
1340
1341 //========================================================
1342 //
1343 // Detect activated memory size. Undefined values require
1344 // memsize parameter.
1345 //
1346 //========================================================
1347
1348 static unsigned int __devinit get_memsize(void)
1349 {
1350 unsigned char tmp;
1351 unsigned int k;
1352
1353 if (memsize)
1354 k = memsize * Kb;
1355 else {
1356 tmp = read3X4(CR1F) & 0x0F;
1357 switch (tmp) {
1358 case 0x03:
1359 k = 1 * 1024 * 1024;
1360 break;
1361 case 0x07:
1362 k = 2 * 1024 * 1024;
1363 break;
1364 case 0x0F:
1365 k = 4 * 1024 * 1024;
1366 break;
1367 case 0x04:
1368 k = 8 * 1024 * 1024;
1369 break;
1370 default:
1371 k = 1 * 1024 * 1024;
1372 output("Unknown memory size code %x in CR1F."
1373 " We default to 1 Mb for now, please"
1374 " do provide a memsize parameter!\n", tmp);
1375 }
1376 }
1377
1378 if (verbosity > 0)
1379 output("framebuffer size = %d Kb\n", k / Kb);
1380 return k;
1381 }
1382
1383 //=========================================================
1384 //
1385 // Detect if a flat panel monitor connected to the special
1386 // interface is active. Override is possible by fp and crt
1387 // parameters.
1388 //
1389 //=========================================================
1390
1391 static unsigned int __devinit get_displaytype(void)
1392 {
1393 if (fp)
1394 return DISPLAY_FP;
1395 if (crt)
1396 return DISPLAY_CRT;
1397 return (read3CE(GR33) & 0x10) ? DISPLAY_FP : DISPLAY_CRT;
1398 }
1399
1400 //=====================================
1401 //
1402 // Get native resolution of flat panel
1403 //
1404 //=====================================
1405
1406 static int __devinit get_nativex(void)
1407 {
1408 int x, y, tmp;
1409
1410 if (nativex)
1411 return nativex;
1412
1413 tmp = (read3CE(GR52) >> 4) & 3;
1414
1415 switch (tmp) {
1416 case 0: x = 1280; y = 1024;
1417 break;
1418 case 2: x = 1024; y = 768;
1419 break;
1420 case 3: x = 800; y = 600;
1421 break;
1422 case 4: x = 1400; y = 1050;
1423 break;
1424 case 1:
1425 default:
1426 x = 640; y = 480;
1427 break;
1428 }
1429
1430 if (verbosity > 0)
1431 output("%dx%d flat panel found\n", x, y);
1432 return x;
1433 }
1434
1435 static int __devinit cybla_pci_probe(struct pci_dev *dev,
1436 const struct pci_device_id *id)
1437 {
1438 struct fb_info *info;
1439 struct cyblafb_par *par;
1440
1441 info = framebuffer_alloc(sizeof(struct cyblafb_par), &dev->dev);
1442 if (!info)
1443 goto errout_alloc_info;
1444
1445 info->pixmap.addr = kzalloc(CYBLAFB_PIXMAPSIZE, GFP_KERNEL);
1446 if (!info->pixmap.addr) {
1447 output("allocation of pixmap buffer failed!\n");
1448 goto errout_alloc_pixmap;
1449 }
1450 info->pixmap.size = CYBLAFB_PIXMAPSIZE - 4;
1451 info->pixmap.buf_align = 4;
1452 info->pixmap.access_align = 32;
1453 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1454 info->pixmap.scan_align = 4;
1455
1456 par = info->par;
1457 par->ops = cyblafb_ops;
1458
1459 info->fix = cyblafb_fix;
1460 info->fbops = &par->ops;
1461 info->fix = cyblafb_fix;
1462
1463 if (pci_enable_device(dev)) {
1464 output("could not enable device!\n");
1465 goto errout_enable;
1466 }
1467 // might already be requested by vga console or vesafb,
1468 // so we do care about success
1469 if (!request_region(0x3c0, 0x20, "cyblafb")) {
1470 output("region 0x3c0/0x20 already reserved\n");
1471 vesafb |= 1;
1472
1473 }
1474 //
1475 // Graphics Engine Registers
1476 //
1477 if (!request_region(GEBase, 0x100, "cyblafb")) {
1478 output("region %#x/0x100 already reserved\n", GEBase);
1479 vesafb |= 2;
1480 }
1481
1482 regdump(par);
1483
1484 enable_mmio();
1485
1486 // setup MMIO region
1487 info->fix.mmio_start = pci_resource_start(dev, 1);
1488 info->fix.mmio_len = 0x20000;
1489
1490 if (!request_mem_region(info->fix.mmio_start,
1491 info->fix.mmio_len, "cyblafb")) {
1492 output("request_mem_region failed for mmio region!\n");
1493 goto errout_mmio_reqmem;
1494 }
1495
1496 io_virt = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
1497
1498 if (!io_virt) {
1499 output("ioremap failed for mmio region\n");
1500 goto errout_mmio_remap;
1501 }
1502 // setup framebuffer memory ... might already be requested
1503 // by vesafb. Not to fail in case of an unsuccessful request
1504 // is useful if both are loaded.
1505 info->fix.smem_start = pci_resource_start(dev, 0);
1506 info->fix.smem_len = get_memsize();
1507
1508 if (!request_mem_region(info->fix.smem_start,
1509 info->fix.smem_len, "cyblafb")) {
1510 output("region %#lx/%#x already reserved\n",
1511 info->fix.smem_start, info->fix.smem_len);
1512 vesafb |= 4;
1513 }
1514
1515 info->screen_base = ioremap_nocache(info->fix.smem_start,
1516 info->fix.smem_len);
1517
1518 if (!info->screen_base) {
1519 output("ioremap failed for smem region\n");
1520 goto errout_smem_remap;
1521 }
1522
1523 displaytype = get_displaytype();
1524
1525 if (displaytype == DISPLAY_FP)
1526 nativex = get_nativex();
1527
1528 info->flags = FBINFO_DEFAULT
1529 | FBINFO_HWACCEL_COPYAREA
1530 | FBINFO_HWACCEL_FILLRECT
1531 | FBINFO_HWACCEL_IMAGEBLIT
1532 | FBINFO_READS_FAST
1533 // | FBINFO_PARTIAL_PAN_OK
1534 | FBINFO_MISC_ALWAYS_SETPAR;
1535
1536 info->pseudo_palette = par->pseudo_pal;
1537
1538 if (getstartupmode(info))
1539 goto errout_findmode;
1540
1541 fb_alloc_cmap(&info->cmap, 256, 0);
1542
1543 if (register_framebuffer(info)) {
1544 output("Could not register CyBla framebuffer\n");
1545 goto errout_register;
1546 }
1547
1548 pci_set_drvdata(dev, info);
1549
1550 //
1551 // normal exit and error paths
1552 //
1553
1554 return 0;
1555
1556 errout_register:
1557 errout_findmode:
1558 iounmap(info->screen_base);
1559 errout_smem_remap:
1560 if (!(vesafb & 4))
1561 release_mem_region(info->fix.smem_start, info->fix.smem_len);
1562 iounmap(io_virt);
1563 errout_mmio_remap:
1564 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1565 errout_mmio_reqmem:
1566 if (!(vesafb & 1))
1567 release_region(0x3c0, 32);
1568 errout_enable:
1569 kfree(info->pixmap.addr);
1570 errout_alloc_pixmap:
1571 framebuffer_release(info);
1572 errout_alloc_info:
1573 output("CyblaFB version %s aborting init.\n", VERSION);
1574 return -ENODEV;
1575 }
1576
1577 static void __devexit cybla_pci_remove(struct pci_dev *dev)
1578 {
1579 struct fb_info *info = pci_get_drvdata(dev);
1580
1581 unregister_framebuffer(info);
1582 iounmap(io_virt);
1583 iounmap(info->screen_base);
1584 if (!(vesafb & 4))
1585 release_mem_region(info->fix.smem_start, info->fix.smem_len);
1586 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1587 fb_dealloc_cmap(&info->cmap);
1588 if (!(vesafb & 2))
1589 release_region(GEBase, 0x100);
1590 if (!(vesafb & 1))
1591 release_region(0x3c0, 32);
1592 kfree(info->pixmap.addr);
1593 framebuffer_release(info);
1594 output("CyblaFB version %s normal exit.\n", VERSION);
1595 }
1596
1597 //
1598 // List of boards that we are trying to support
1599 //
1600 static struct pci_device_id cybla_devices[] = {
1601 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1602 {0,}
1603 };
1604
1605 MODULE_DEVICE_TABLE(pci, cybla_devices);
1606
1607 static struct pci_driver cyblafb_pci_driver = {
1608 .name = "cyblafb",
1609 .id_table = cybla_devices,
1610 .probe = cybla_pci_probe,
1611 .remove = __devexit_p(cybla_pci_remove)
1612 };
1613
1614 //=============================================================
1615 //
1616 // kernel command line example:
1617 //
1618 // video=cyblafb:1280x1024, bpp=16, ref=50 ...
1619 //
1620 // modprobe command line example:
1621 //
1622 // modprobe cyblafb mode=1280x1024 bpp=16 ref=50 ...
1623 //
1624 //=============================================================
1625
1626 static int __devinit cyblafb_init(void)
1627 {
1628 #ifndef MODULE
1629 char *options = NULL;
1630 char *opt;
1631
1632 if (fb_get_options("cyblafb", &options))
1633 return -ENODEV;
1634
1635 if (options && *options)
1636 while ((opt = strsep(&options, ",")) != NULL) {
1637 if (!*opt)
1638 continue;
1639 else if (!strncmp(opt, "bpp=", 4))
1640 bpp = simple_strtoul(opt + 4, NULL, 0);
1641 else if (!strncmp(opt, "ref=", 4))
1642 ref = simple_strtoul(opt + 4, NULL, 0);
1643 else if (!strncmp(opt, "fp", 2))
1644 displaytype = DISPLAY_FP;
1645 else if (!strncmp(opt, "crt", 3))
1646 displaytype = DISPLAY_CRT;
1647 else if (!strncmp(opt, "nativex=", 8))
1648 nativex = simple_strtoul(opt + 8, NULL, 0);
1649 else if (!strncmp(opt, "center", 6))
1650 center = 1;
1651 else if (!strncmp(opt, "stretch", 7))
1652 stretch = 1;
1653 else if (!strncmp(opt, "pciwb=", 6))
1654 pciwb = simple_strtoul(opt + 6, NULL, 0);
1655 else if (!strncmp(opt, "pcirb=", 6))
1656 pcirb = simple_strtoul(opt + 6, NULL, 0);
1657 else if (!strncmp(opt, "pciwr=", 6))
1658 pciwr = simple_strtoul(opt + 6, NULL, 0);
1659 else if (!strncmp(opt, "pcirr=", 6))
1660 pcirr = simple_strtoul(opt + 6, NULL, 0);
1661 else if (!strncmp(opt, "memsize=", 8))
1662 memsize = simple_strtoul(opt + 8, NULL, 0);
1663 else if (!strncmp(opt, "verbosity=", 10))
1664 verbosity = simple_strtoul(opt + 10, NULL, 0);
1665 else
1666 mode = opt;
1667 }
1668 #endif
1669 output("CyblaFB version %s initializing\n", VERSION);
1670 return pci_register_driver(&cyblafb_pci_driver);
1671 }
1672
1673 static void __exit cyblafb_exit(void)
1674 {
1675 pci_unregister_driver(&cyblafb_pci_driver);
1676 }
1677
1678 module_init(cyblafb_init);
1679 module_exit(cyblafb_exit);
1680
1681 MODULE_AUTHOR("Knut Petersen <knut_petersen@t-online.de>");
1682 MODULE_DESCRIPTION("Framebuffer driver for Cyberblade/i1 graphics core");
1683 MODULE_LICENSE("GPL");
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