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Linux 4.18.10
[linux/fpc-iii.git] / drivers / video / fbdev / tdfxfb.c
blobdec1fed9880eaa75b6d3dcf3bb6bbb24bed454f4
1 /*
2 *
3 * tdfxfb.c
4 *
5 * Author: Hannu Mallat <hmallat@cc.hut.fi>
6 *
7 * Copyright © 1999 Hannu Mallat
8 * All rights reserved
9 *
10 * Created : Thu Sep 23 18:17:43 1999, hmallat
11 * Last modified: Tue Nov 2 21:19:47 1999, hmallat
12 *
13 * I2C part copied from the i2c-voodoo3.c driver by:
14 * Frodo Looijaard <frodol@dds.nl>,
15 * Philip Edelbrock <phil@netroedge.com>,
16 * Ralph Metzler <rjkm@thp.uni-koeln.de>, and
17 * Mark D. Studebaker <mdsxyz123@yahoo.com>
18 *
19 * Lots of the information here comes from the Daryll Strauss' Banshee
20 * patches to the XF86 server, and the rest comes from the 3dfx
21 * Banshee specification. I'm very much indebted to Daryll for his
22 * work on the X server.
23 *
24 * Voodoo3 support was contributed Harold Oga. Lots of additions
25 * (proper acceleration, 24 bpp, hardware cursor) and bug fixes by Attila
26 * Kesmarki. Thanks guys!
27 *
28 * Voodoo1 and Voodoo2 support aren't relevant to this driver as they
29 * behave very differently from the Voodoo3/4/5. For anyone wanting to
30 * use frame buffer on the Voodoo1/2, see the sstfb driver (which is
31 * located at http://www.sourceforge.net/projects/sstfb).
32 *
33 * While I _am_ grateful to 3Dfx for releasing the specs for Banshee,
34 * I do wish the next version is a bit more complete. Without the XF86
35 * patches I couldn't have gotten even this far... for instance, the
36 * extensions to the VGA register set go completely unmentioned in the
37 * spec! Also, lots of references are made to the 'SST core', but no
38 * spec is publicly available, AFAIK.
39 *
40 * The structure of this driver comes pretty much from the Permedia
41 * driver by Ilario Nardinocchi, which in turn is based on skeletonfb.
42 *
43 * TODO:
44 * - multihead support (basically need to support an array of fb_infos)
45 * - support other architectures (PPC, Alpha); does the fact that the VGA
46 * core can be accessed only thru I/O (not memory mapped) complicate
47 * things?
48 *
49 * Version history:
50 *
51 * 0.1.4 (released 2002-05-28) ported over to new fbdev api by James Simmons
52 *
53 * 0.1.3 (released 1999-11-02) added Attila's panning support, code
54 * reorg, hwcursor address page size alignment
55 * (for mmapping both frame buffer and regs),
56 * and my changes to get rid of hardcoded
57 * VGA i/o register locations (uses PCI
58 * configuration info now)
59 * 0.1.2 (released 1999-10-19) added Attila Kesmarki's bug fixes and
60 * improvements
61 * 0.1.1 (released 1999-10-07) added Voodoo3 support by Harold Oga.
62 * 0.1.0 (released 1999-10-06) initial version
63 *
64 */
65
66 #include <linux/module.h>
67 #include <linux/kernel.h>
68 #include <linux/errno.h>
69 #include <linux/string.h>
70 #include <linux/mm.h>
71 #include <linux/slab.h>
72 #include <linux/fb.h>
73 #include <linux/init.h>
74 #include <linux/pci.h>
75 #include <asm/io.h>
76
77 #include <video/tdfx.h>
78
79 #define DPRINTK(a, b...) pr_debug("fb: %s: " a, __func__ , ## b)
80
81 #define BANSHEE_MAX_PIXCLOCK 270000
82 #define VOODOO3_MAX_PIXCLOCK 300000
83 #define VOODOO5_MAX_PIXCLOCK 350000
84
85 static const struct fb_fix_screeninfo tdfx_fix = {
86 .type = FB_TYPE_PACKED_PIXELS,
87 .visual = FB_VISUAL_PSEUDOCOLOR,
88 .ypanstep = 1,
89 .ywrapstep = 1,
90 .accel = FB_ACCEL_3DFX_BANSHEE
91 };
92
93 static const struct fb_var_screeninfo tdfx_var = {
94 /* "640x480, 8 bpp @ 60 Hz */
95 .xres = 640,
96 .yres = 480,
97 .xres_virtual = 640,
98 .yres_virtual = 1024,
99 .bits_per_pixel = 8,
100 .red = {0, 8, 0},
101 .blue = {0, 8, 0},
102 .green = {0, 8, 0},
103 .activate = FB_ACTIVATE_NOW,
104 .height = -1,
105 .width = -1,
106 .accel_flags = FB_ACCELF_TEXT,
107 .pixclock = 39722,
108 .left_margin = 40,
109 .right_margin = 24,
110 .upper_margin = 32,
111 .lower_margin = 11,
112 .hsync_len = 96,
113 .vsync_len = 2,
114 .vmode = FB_VMODE_NONINTERLACED
115 };
116
117 /*
118 * PCI driver prototypes
119 */
120 static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id);
121 static void tdfxfb_remove(struct pci_dev *pdev);
122
123 static const struct pci_device_id tdfxfb_id_table[] = {
124 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE,
125 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
126 0xff0000, 0 },
127 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3,
128 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
129 0xff0000, 0 },
130 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO5,
131 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
132 0xff0000, 0 },
133 { 0, }
134 };
135
136 static struct pci_driver tdfxfb_driver = {
137 .name = "tdfxfb",
138 .id_table = tdfxfb_id_table,
139 .probe = tdfxfb_probe,
140 .remove = tdfxfb_remove,
141 };
142
143 MODULE_DEVICE_TABLE(pci, tdfxfb_id_table);
144
145 /*
146 * Driver data
147 */
148 static int nopan;
149 static int nowrap = 1; /* not implemented (yet) */
150 static int hwcursor = 1;
151 static char *mode_option;
152 static bool nomtrr;
153
154 /* -------------------------------------------------------------------------
155 * Hardware-specific funcions
156 * ------------------------------------------------------------------------- */
157
158 static inline u8 vga_inb(struct tdfx_par *par, u32 reg)
159 {
160 return inb(par->iobase + reg - 0x300);
161 }
162
163 static inline void vga_outb(struct tdfx_par *par, u32 reg, u8 val)
164 {
165 outb(val, par->iobase + reg - 0x300);
166 }
167
168 static inline void gra_outb(struct tdfx_par *par, u32 idx, u8 val)
169 {
170 vga_outb(par, GRA_I, idx);
171 wmb();
172 vga_outb(par, GRA_D, val);
173 wmb();
174 }
175
176 static inline void seq_outb(struct tdfx_par *par, u32 idx, u8 val)
177 {
178 vga_outb(par, SEQ_I, idx);
179 wmb();
180 vga_outb(par, SEQ_D, val);
181 wmb();
182 }
183
184 static inline u8 seq_inb(struct tdfx_par *par, u32 idx)
185 {
186 vga_outb(par, SEQ_I, idx);
187 mb();
188 return vga_inb(par, SEQ_D);
189 }
190
191 static inline void crt_outb(struct tdfx_par *par, u32 idx, u8 val)
192 {
193 vga_outb(par, CRT_I, idx);
194 wmb();
195 vga_outb(par, CRT_D, val);
196 wmb();
197 }
198
199 static inline u8 crt_inb(struct tdfx_par *par, u32 idx)
200 {
201 vga_outb(par, CRT_I, idx);
202 mb();
203 return vga_inb(par, CRT_D);
204 }
205
206 static inline void att_outb(struct tdfx_par *par, u32 idx, u8 val)
207 {
208 unsigned char tmp;
209
210 tmp = vga_inb(par, IS1_R);
211 vga_outb(par, ATT_IW, idx);
212 vga_outb(par, ATT_IW, val);
213 }
214
215 static inline void vga_disable_video(struct tdfx_par *par)
216 {
217 unsigned char s;
218
219 s = seq_inb(par, 0x01) | 0x20;
220 seq_outb(par, 0x00, 0x01);
221 seq_outb(par, 0x01, s);
222 seq_outb(par, 0x00, 0x03);
223 }
224
225 static inline void vga_enable_video(struct tdfx_par *par)
226 {
227 unsigned char s;
228
229 s = seq_inb(par, 0x01) & 0xdf;
230 seq_outb(par, 0x00, 0x01);
231 seq_outb(par, 0x01, s);
232 seq_outb(par, 0x00, 0x03);
233 }
234
235 static inline void vga_enable_palette(struct tdfx_par *par)
236 {
237 vga_inb(par, IS1_R);
238 mb();
239 vga_outb(par, ATT_IW, 0x20);
240 }
241
242 static inline u32 tdfx_inl(struct tdfx_par *par, unsigned int reg)
243 {
244 return readl(par->regbase_virt + reg);
245 }
246
247 static inline void tdfx_outl(struct tdfx_par *par, unsigned int reg, u32 val)
248 {
249 writel(val, par->regbase_virt + reg);
250 }
251
252 static inline void banshee_make_room(struct tdfx_par *par, int size)
253 {
254 /* Note: The Voodoo3's onboard FIFO has 32 slots. This loop
255 * won't quit if you ask for more. */
256 while ((tdfx_inl(par, STATUS) & 0x1f) < size - 1)
257 cpu_relax();
258 }
259
260 static int banshee_wait_idle(struct fb_info *info)
261 {
262 struct tdfx_par *par = info->par;
263 int i = 0;
264
265 banshee_make_room(par, 1);
266 tdfx_outl(par, COMMAND_3D, COMMAND_3D_NOP);
267
268 do {
269 if ((tdfx_inl(par, STATUS) & STATUS_BUSY) == 0)
270 i++;
271 } while (i < 3);
272
273 return 0;
274 }
275
276 /*
277 * Set the color of a palette entry in 8bpp mode
278 */
279 static inline void do_setpalentry(struct tdfx_par *par, unsigned regno, u32 c)
280 {
281 banshee_make_room(par, 2);
282 tdfx_outl(par, DACADDR, regno);
283 /* read after write makes it working */
284 tdfx_inl(par, DACADDR);
285 tdfx_outl(par, DACDATA, c);
286 }
287
288 static u32 do_calc_pll(int freq, int *freq_out)
289 {
290 int m, n, k, best_m, best_n, best_k, best_error;
291 int fref = 14318;
292
293 best_error = freq;
294 best_n = best_m = best_k = 0;
295
296 for (k = 3; k >= 0; k--) {
297 for (m = 63; m >= 0; m--) {
298 /*
299 * Estimate value of n that produces target frequency
300 * with current m and k
301 */
302 int n_estimated = ((freq * (m + 2) << k) / fref) - 2;
303
304 /* Search neighborhood of estimated n */
305 for (n = max(0, n_estimated);
306 n <= min(255, n_estimated + 1);
307 n++) {
308 /*
309 * Calculate PLL freqency with current m, k and
310 * estimated n
311 */
312 int f = (fref * (n + 2) / (m + 2)) >> k;
313 int error = abs(f - freq);
314
315 /*
316 * If this is the closest we've come to the
317 * target frequency then remember n, m and k
318 */
319 if (error < best_error) {
320 best_error = error;
321 best_n = n;
322 best_m = m;
323 best_k = k;
324 }
325 }
326 }
327 }
328
329 n = best_n;
330 m = best_m;
331 k = best_k;
332 *freq_out = (fref * (n + 2) / (m + 2)) >> k;
333
334 return (n << 8) | (m << 2) | k;
335 }
336
337 static void do_write_regs(struct fb_info *info, struct banshee_reg *reg)
338 {
339 struct tdfx_par *par = info->par;
340 int i;
341
342 banshee_wait_idle(info);
343
344 tdfx_outl(par, MISCINIT1, tdfx_inl(par, MISCINIT1) | 0x01);
345
346 crt_outb(par, 0x11, crt_inb(par, 0x11) & 0x7f); /* CRT unprotect */
347
348 banshee_make_room(par, 3);
349 tdfx_outl(par, VGAINIT1, reg->vgainit1 & 0x001FFFFF);
350 tdfx_outl(par, VIDPROCCFG, reg->vidcfg & ~0x00000001);
351 #if 0
352 tdfx_outl(par, PLLCTRL1, reg->mempll);
353 tdfx_outl(par, PLLCTRL2, reg->gfxpll);
354 #endif
355 tdfx_outl(par, PLLCTRL0, reg->vidpll);
356
357 vga_outb(par, MISC_W, reg->misc[0x00] | 0x01);
358
359 for (i = 0; i < 5; i++)
360 seq_outb(par, i, reg->seq[i]);
361
362 for (i = 0; i < 25; i++)
363 crt_outb(par, i, reg->crt[i]);
364
365 for (i = 0; i < 9; i++)
366 gra_outb(par, i, reg->gra[i]);
367
368 for (i = 0; i < 21; i++)
369 att_outb(par, i, reg->att[i]);
370
371 crt_outb(par, 0x1a, reg->ext[0]);
372 crt_outb(par, 0x1b, reg->ext[1]);
373
374 vga_enable_palette(par);
375 vga_enable_video(par);
376
377 banshee_make_room(par, 9);
378 tdfx_outl(par, VGAINIT0, reg->vgainit0);
379 tdfx_outl(par, DACMODE, reg->dacmode);
380 tdfx_outl(par, VIDDESKSTRIDE, reg->stride);
381 tdfx_outl(par, HWCURPATADDR, reg->curspataddr);
382
383 tdfx_outl(par, VIDSCREENSIZE, reg->screensize);
384 tdfx_outl(par, VIDDESKSTART, reg->startaddr);
385 tdfx_outl(par, VIDPROCCFG, reg->vidcfg);
386 tdfx_outl(par, VGAINIT1, reg->vgainit1);
387 tdfx_outl(par, MISCINIT0, reg->miscinit0);
388
389 banshee_make_room(par, 8);
390 tdfx_outl(par, SRCBASE, reg->startaddr);
391 tdfx_outl(par, DSTBASE, reg->startaddr);
392 tdfx_outl(par, COMMANDEXTRA_2D, 0);
393 tdfx_outl(par, CLIP0MIN, 0);
394 tdfx_outl(par, CLIP0MAX, 0x0fff0fff);
395 tdfx_outl(par, CLIP1MIN, 0);
396 tdfx_outl(par, CLIP1MAX, 0x0fff0fff);
397 tdfx_outl(par, SRCXY, 0);
398
399 banshee_wait_idle(info);
400 }
401
402 static unsigned long do_lfb_size(struct tdfx_par *par, unsigned short dev_id)
403 {
404 u32 draminit0 = tdfx_inl(par, DRAMINIT0);
405 u32 draminit1 = tdfx_inl(par, DRAMINIT1);
406 u32 miscinit1;
407 int num_chips = (draminit0 & DRAMINIT0_SGRAM_NUM) ? 8 : 4;
408 int chip_size; /* in MB */
409 int has_sgram = draminit1 & DRAMINIT1_MEM_SDRAM;
410
411 if (dev_id < PCI_DEVICE_ID_3DFX_VOODOO5) {
412 /* Banshee/Voodoo3 */
413 chip_size = 2;
414 if (has_sgram && !(draminit0 & DRAMINIT0_SGRAM_TYPE))
415 chip_size = 1;
416 } else {
417 /* Voodoo4/5 */
418 has_sgram = 0;
419 chip_size = draminit0 & DRAMINIT0_SGRAM_TYPE_MASK;
420 chip_size = 1 << (chip_size >> DRAMINIT0_SGRAM_TYPE_SHIFT);
421 }
422
423 /* disable block writes for SDRAM */
424 miscinit1 = tdfx_inl(par, MISCINIT1);
425 miscinit1 |= has_sgram ? 0 : MISCINIT1_2DBLOCK_DIS;
426 miscinit1 |= MISCINIT1_CLUT_INV;
427
428 banshee_make_room(par, 1);
429 tdfx_outl(par, MISCINIT1, miscinit1);
430 return num_chips * chip_size * 1024l * 1024;
431 }
432
433 /* ------------------------------------------------------------------------- */
434
435 static int tdfxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
436 {
437 struct tdfx_par *par = info->par;
438 u32 lpitch;
439
440 if (var->bits_per_pixel != 8 && var->bits_per_pixel != 16 &&
441 var->bits_per_pixel != 24 && var->bits_per_pixel != 32) {
442 DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
443 return -EINVAL;
444 }
445
446 if (var->xres != var->xres_virtual)
447 var->xres_virtual = var->xres;
448
449 if (var->yres > var->yres_virtual)
450 var->yres_virtual = var->yres;
451
452 if (var->xoffset) {
453 DPRINTK("xoffset not supported\n");
454 return -EINVAL;
455 }
456 var->yoffset = 0;
457
458 /*
459 * Banshee doesn't support interlace, but Voodoo4/5 and probably
460 * Voodoo3 do.
461 * no direct information about device id now?
462 * use max_pixclock for this...
463 */
464 if (((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) &&
465 (par->max_pixclock < VOODOO3_MAX_PIXCLOCK)) {
466 DPRINTK("interlace not supported\n");
467 return -EINVAL;
468 }
469
470 if (info->monspecs.hfmax && info->monspecs.vfmax &&
471 info->monspecs.dclkmax && fb_validate_mode(var, info) < 0) {
472 DPRINTK("mode outside monitor's specs\n");
473 return -EINVAL;
474 }
475
476 var->xres = (var->xres + 15) & ~15; /* could sometimes be 8 */
477 lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3);
478
479 if (var->xres < 320 || var->xres > 2048) {
480 DPRINTK("width not supported: %u\n", var->xres);
481 return -EINVAL;
482 }
483
484 if (var->yres < 200 || var->yres > 2048) {
485 DPRINTK("height not supported: %u\n", var->yres);
486 return -EINVAL;
487 }
488
489 if (lpitch * var->yres_virtual > info->fix.smem_len) {
490 var->yres_virtual = info->fix.smem_len / lpitch;
491 if (var->yres_virtual < var->yres) {
492 DPRINTK("no memory for screen (%ux%ux%u)\n",
493 var->xres, var->yres_virtual,
494 var->bits_per_pixel);
495 return -EINVAL;
496 }
497 }
498
499 if (PICOS2KHZ(var->pixclock) > par->max_pixclock) {
500 DPRINTK("pixclock too high (%ldKHz)\n",
501 PICOS2KHZ(var->pixclock));
502 return -EINVAL;
503 }
504
505 var->transp.offset = 0;
506 var->transp.length = 0;
507 switch (var->bits_per_pixel) {
508 case 8:
509 var->red.length = 8;
510 var->red.offset = 0;
511 var->green = var->red;
512 var->blue = var->red;
513 break;
514 case 16:
515 var->red.offset = 11;
516 var->red.length = 5;
517 var->green.offset = 5;
518 var->green.length = 6;
519 var->blue.offset = 0;
520 var->blue.length = 5;
521 break;
522 case 32:
523 var->transp.offset = 24;
524 var->transp.length = 8;
525 case 24:
526 var->red.offset = 16;
527 var->green.offset = 8;
528 var->blue.offset = 0;
529 var->red.length = var->green.length = var->blue.length = 8;
530 break;
531 }
532 var->width = -1;
533 var->height = -1;
534
535 var->accel_flags = FB_ACCELF_TEXT;
536
537 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
538 var->xres, var->yres, var->bits_per_pixel);
539 return 0;
540 }
541
542 static int tdfxfb_set_par(struct fb_info *info)
543 {
544 struct tdfx_par *par = info->par;
545 u32 hdispend = info->var.xres;
546 u32 hsyncsta = hdispend + info->var.right_margin;
547 u32 hsyncend = hsyncsta + info->var.hsync_len;
548 u32 htotal = hsyncend + info->var.left_margin;
549 u32 hd, hs, he, ht, hbs, hbe;
550 u32 vd, vs, ve, vt, vbs, vbe;
551 struct banshee_reg reg;
552 int fout, freq;
553 u32 wd;
554 u32 cpp = (info->var.bits_per_pixel + 7) >> 3;
555
556 memset(&reg, 0, sizeof(reg));
557
558 reg.vidcfg = VIDCFG_VIDPROC_ENABLE | VIDCFG_DESK_ENABLE |
559 VIDCFG_CURS_X11 |
560 ((cpp - 1) << VIDCFG_PIXFMT_SHIFT) |
561 (cpp != 1 ? VIDCFG_CLUT_BYPASS : 0);
562
563 /* PLL settings */
564 freq = PICOS2KHZ(info->var.pixclock);
565
566 reg.vidcfg &= ~VIDCFG_2X;
567
568 if (freq > par->max_pixclock / 2) {
569 freq = freq > par->max_pixclock ? par->max_pixclock : freq;
570 reg.dacmode |= DACMODE_2X;
571 reg.vidcfg |= VIDCFG_2X;
572 hdispend >>= 1;
573 hsyncsta >>= 1;
574 hsyncend >>= 1;
575 htotal >>= 1;
576 }
577
578 wd = (hdispend >> 3) - 1;
579 hd = wd;
580 hs = (hsyncsta >> 3) - 1;
581 he = (hsyncend >> 3) - 1;
582 ht = (htotal >> 3) - 1;
583 hbs = hd;
584 hbe = ht;
585
586 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
587 vd = (info->var.yres << 1) - 1;
588 vs = vd + (info->var.lower_margin << 1);
589 ve = vs + (info->var.vsync_len << 1);
590 vt = ve + (info->var.upper_margin << 1) - 1;
591 reg.screensize = info->var.xres | (info->var.yres << 13);
592 reg.vidcfg |= VIDCFG_HALF_MODE;
593 reg.crt[0x09] = 0x80;
594 } else {
595 vd = info->var.yres - 1;
596 vs = vd + info->var.lower_margin;
597 ve = vs + info->var.vsync_len;
598 vt = ve + info->var.upper_margin - 1;
599 reg.screensize = info->var.xres | (info->var.yres << 12);
600 reg.vidcfg &= ~VIDCFG_HALF_MODE;
601 }
602 vbs = vd;
603 vbe = vt;
604
605 /* this is all pretty standard VGA register stuffing */
606 reg.misc[0x00] = 0x0f |
607 (info->var.xres < 400 ? 0xa0 :
608 info->var.xres < 480 ? 0x60 :
609 info->var.xres < 768 ? 0xe0 : 0x20);
610
611 reg.gra[0x05] = 0x40;
612 reg.gra[0x06] = 0x05;
613 reg.gra[0x07] = 0x0f;
614 reg.gra[0x08] = 0xff;
615
616 reg.att[0x00] = 0x00;
617 reg.att[0x01] = 0x01;
618 reg.att[0x02] = 0x02;
619 reg.att[0x03] = 0x03;
620 reg.att[0x04] = 0x04;
621 reg.att[0x05] = 0x05;
622 reg.att[0x06] = 0x06;
623 reg.att[0x07] = 0x07;
624 reg.att[0x08] = 0x08;
625 reg.att[0x09] = 0x09;
626 reg.att[0x0a] = 0x0a;
627 reg.att[0x0b] = 0x0b;
628 reg.att[0x0c] = 0x0c;
629 reg.att[0x0d] = 0x0d;
630 reg.att[0x0e] = 0x0e;
631 reg.att[0x0f] = 0x0f;
632 reg.att[0x10] = 0x41;
633 reg.att[0x12] = 0x0f;
634
635 reg.seq[0x00] = 0x03;
636 reg.seq[0x01] = 0x01; /* fixme: clkdiv2? */
637 reg.seq[0x02] = 0x0f;
638 reg.seq[0x03] = 0x00;
639 reg.seq[0x04] = 0x0e;
640
641 reg.crt[0x00] = ht - 4;
642 reg.crt[0x01] = hd;
643 reg.crt[0x02] = hbs;
644 reg.crt[0x03] = 0x80 | (hbe & 0x1f);
645 reg.crt[0x04] = hs;
646 reg.crt[0x05] = ((hbe & 0x20) << 2) | (he & 0x1f);
647 reg.crt[0x06] = vt;
648 reg.crt[0x07] = ((vs & 0x200) >> 2) |
649 ((vd & 0x200) >> 3) |
650 ((vt & 0x200) >> 4) | 0x10 |
651 ((vbs & 0x100) >> 5) |
652 ((vs & 0x100) >> 6) |
653 ((vd & 0x100) >> 7) |
654 ((vt & 0x100) >> 8);
655 reg.crt[0x09] |= 0x40 | ((vbs & 0x200) >> 4);
656 reg.crt[0x10] = vs;
657 reg.crt[0x11] = (ve & 0x0f) | 0x20;
658 reg.crt[0x12] = vd;
659 reg.crt[0x13] = wd;
660 reg.crt[0x15] = vbs;
661 reg.crt[0x16] = vbe + 1;
662 reg.crt[0x17] = 0xc3;
663 reg.crt[0x18] = 0xff;
664
665 /* Banshee's nonvga stuff */
666 reg.ext[0x00] = (((ht & 0x100) >> 8) |
667 ((hd & 0x100) >> 6) |
668 ((hbs & 0x100) >> 4) |
669 ((hbe & 0x40) >> 1) |
670 ((hs & 0x100) >> 2) |
671 ((he & 0x20) << 2));
672 reg.ext[0x01] = (((vt & 0x400) >> 10) |
673 ((vd & 0x400) >> 8) |
674 ((vbs & 0x400) >> 6) |
675 ((vbe & 0x400) >> 4));
676
677 reg.vgainit0 = VGAINIT0_8BIT_DAC |
678 VGAINIT0_EXT_ENABLE |
679 VGAINIT0_WAKEUP_3C3 |
680 VGAINIT0_ALT_READBACK |
681 VGAINIT0_EXTSHIFTOUT;
682 reg.vgainit1 = tdfx_inl(par, VGAINIT1) & 0x1fffff;
683
684 if (hwcursor)
685 reg.curspataddr = info->fix.smem_len;
686
687 reg.cursloc = 0;
688
689 reg.cursc0 = 0;
690 reg.cursc1 = 0xffffff;
691
692 reg.stride = info->var.xres * cpp;
693 reg.startaddr = info->var.yoffset * reg.stride
694 + info->var.xoffset * cpp;
695
696 reg.vidpll = do_calc_pll(freq, &fout);
697 #if 0
698 reg.mempll = do_calc_pll(..., &fout);
699 reg.gfxpll = do_calc_pll(..., &fout);
700 #endif
701
702 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
703 reg.vidcfg |= VIDCFG_INTERLACE;
704 reg.miscinit0 = tdfx_inl(par, MISCINIT0);
705
706 #if defined(__BIG_ENDIAN)
707 switch (info->var.bits_per_pixel) {
708 case 8:
709 case 24:
710 reg.miscinit0 &= ~(1 << 30);
711 reg.miscinit0 &= ~(1 << 31);
712 break;
713 case 16:
714 reg.miscinit0 |= (1 << 30);
715 reg.miscinit0 |= (1 << 31);
716 break;
717 case 32:
718 reg.miscinit0 |= (1 << 30);
719 reg.miscinit0 &= ~(1 << 31);
720 break;
721 }
722 #endif
723 do_write_regs(info, &reg);
724
725 /* Now change fb_fix_screeninfo according to changes in par */
726 info->fix.line_length = reg.stride;
727 info->fix.visual = (info->var.bits_per_pixel == 8)
728 ? FB_VISUAL_PSEUDOCOLOR
729 : FB_VISUAL_TRUECOLOR;
730 DPRINTK("Graphics mode is now set at %dx%d depth %d\n",
731 info->var.xres, info->var.yres, info->var.bits_per_pixel);
732 return 0;
733 }
734
735 /* A handy macro shamelessly pinched from matroxfb */
736 #define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
737
738 static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
739 unsigned blue, unsigned transp,
740 struct fb_info *info)
741 {
742 struct tdfx_par *par = info->par;
743 u32 rgbcol;
744
745 if (regno >= info->cmap.len || regno > 255)
746 return 1;
747
748 /* grayscale works only partially under directcolor */
749 if (info->var.grayscale) {
750 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
751 blue = (red * 77 + green * 151 + blue * 28) >> 8;
752 green = blue;
753 red = blue;
754 }
755
756 switch (info->fix.visual) {
757 case FB_VISUAL_PSEUDOCOLOR:
758 rgbcol = (((u32)red & 0xff00) << 8) |
759 (((u32)green & 0xff00) << 0) |
760 (((u32)blue & 0xff00) >> 8);
761 do_setpalentry(par, regno, rgbcol);
762 break;
763 /* Truecolor has no hardware color palettes. */
764 case FB_VISUAL_TRUECOLOR:
765 if (regno < 16) {
766 rgbcol = (CNVT_TOHW(red, info->var.red.length) <<
767 info->var.red.offset) |
768 (CNVT_TOHW(green, info->var.green.length) <<
769 info->var.green.offset) |
770 (CNVT_TOHW(blue, info->var.blue.length) <<
771 info->var.blue.offset) |
772 (CNVT_TOHW(transp, info->var.transp.length) <<
773 info->var.transp.offset);
774 par->palette[regno] = rgbcol;
775 }
776
777 break;
778 default:
779 DPRINTK("bad depth %u\n", info->var.bits_per_pixel);
780 break;
781 }
782
783 return 0;
784 }
785
786 /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
787 static int tdfxfb_blank(int blank, struct fb_info *info)
788 {
789 struct tdfx_par *par = info->par;
790 int vgablank = 1;
791 u32 dacmode = tdfx_inl(par, DACMODE);
792
793 dacmode &= ~(BIT(1) | BIT(3));
794
795 switch (blank) {
796 case FB_BLANK_UNBLANK: /* Screen: On; HSync: On, VSync: On */
797 vgablank = 0;
798 break;
799 case FB_BLANK_NORMAL: /* Screen: Off; HSync: On, VSync: On */
800 break;
801 case FB_BLANK_VSYNC_SUSPEND: /* Screen: Off; HSync: On, VSync: Off */
802 dacmode |= BIT(3);
803 break;
804 case FB_BLANK_HSYNC_SUSPEND: /* Screen: Off; HSync: Off, VSync: On */
805 dacmode |= BIT(1);
806 break;
807 case FB_BLANK_POWERDOWN: /* Screen: Off; HSync: Off, VSync: Off */
808 dacmode |= BIT(1) | BIT(3);
809 break;
810 }
811
812 banshee_make_room(par, 1);
813 tdfx_outl(par, DACMODE, dacmode);
814 if (vgablank)
815 vga_disable_video(par);
816 else
817 vga_enable_video(par);
818 return 0;
819 }
820
821 /*
822 * Set the starting position of the visible screen to var->yoffset
823 */
824 static int tdfxfb_pan_display(struct fb_var_screeninfo *var,
825 struct fb_info *info)
826 {
827 struct tdfx_par *par = info->par;
828 u32 addr = var->yoffset * info->fix.line_length;
829
830 if (nopan || var->xoffset)
831 return -EINVAL;
832
833 banshee_make_room(par, 1);
834 tdfx_outl(par, VIDDESKSTART, addr);
835
836 return 0;
837 }
838
839 #ifdef CONFIG_FB_3DFX_ACCEL
840 /*
841 * FillRect 2D command (solidfill or invert (via ROP_XOR))
842 */
843 static void tdfxfb_fillrect(struct fb_info *info,
844 const struct fb_fillrect *rect)
845 {
846 struct tdfx_par *par = info->par;
847 u32 bpp = info->var.bits_per_pixel;
848 u32 stride = info->fix.line_length;
849 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
850 int tdfx_rop;
851 u32 dx = rect->dx;
852 u32 dy = rect->dy;
853 u32 dstbase = 0;
854
855 if (rect->rop == ROP_COPY)
856 tdfx_rop = TDFX_ROP_COPY;
857 else
858 tdfx_rop = TDFX_ROP_XOR;
859
860 /* assume always rect->height < 4096 */
861 if (dy + rect->height > 4095) {
862 dstbase = stride * dy;
863 dy = 0;
864 }
865 /* assume always rect->width < 4096 */
866 if (dx + rect->width > 4095) {
867 dstbase += dx * bpp >> 3;
868 dx = 0;
869 }
870 banshee_make_room(par, 6);
871 tdfx_outl(par, DSTFORMAT, fmt);
872 if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
873 tdfx_outl(par, COLORFORE, rect->color);
874 } else { /* FB_VISUAL_TRUECOLOR */
875 tdfx_outl(par, COLORFORE, par->palette[rect->color]);
876 }
877 tdfx_outl(par, COMMAND_2D, COMMAND_2D_FILLRECT | (tdfx_rop << 24));
878 tdfx_outl(par, DSTBASE, dstbase);
879 tdfx_outl(par, DSTSIZE, rect->width | (rect->height << 16));
880 tdfx_outl(par, LAUNCH_2D, dx | (dy << 16));
881 }
882
883 /*
884 * Screen-to-Screen BitBlt 2D command (for the bmove fb op.)
885 */
886 static void tdfxfb_copyarea(struct fb_info *info,
887 const struct fb_copyarea *area)
888 {
889 struct tdfx_par *par = info->par;
890 u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
891 u32 bpp = info->var.bits_per_pixel;
892 u32 stride = info->fix.line_length;
893 u32 blitcmd = COMMAND_2D_S2S_BITBLT | (TDFX_ROP_COPY << 24);
894 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
895 u32 dstbase = 0;
896 u32 srcbase = 0;
897
898 /* assume always area->height < 4096 */
899 if (sy + area->height > 4095) {
900 srcbase = stride * sy;
901 sy = 0;
902 }
903 /* assume always area->width < 4096 */
904 if (sx + area->width > 4095) {
905 srcbase += sx * bpp >> 3;
906 sx = 0;
907 }
908 /* assume always area->height < 4096 */
909 if (dy + area->height > 4095) {
910 dstbase = stride * dy;
911 dy = 0;
912 }
913 /* assume always area->width < 4096 */
914 if (dx + area->width > 4095) {
915 dstbase += dx * bpp >> 3;
916 dx = 0;
917 }
918
919 if (area->sx <= area->dx) {
920 /* -X */
921 blitcmd |= BIT(14);
922 sx += area->width - 1;
923 dx += area->width - 1;
924 }
925 if (area->sy <= area->dy) {
926 /* -Y */
927 blitcmd |= BIT(15);
928 sy += area->height - 1;
929 dy += area->height - 1;
930 }
931
932 banshee_make_room(par, 8);
933
934 tdfx_outl(par, SRCFORMAT, fmt);
935 tdfx_outl(par, DSTFORMAT, fmt);
936 tdfx_outl(par, COMMAND_2D, blitcmd);
937 tdfx_outl(par, DSTSIZE, area->width | (area->height << 16));
938 tdfx_outl(par, DSTXY, dx | (dy << 16));
939 tdfx_outl(par, SRCBASE, srcbase);
940 tdfx_outl(par, DSTBASE, dstbase);
941 tdfx_outl(par, LAUNCH_2D, sx | (sy << 16));
942 }
943
944 static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image)
945 {
946 struct tdfx_par *par = info->par;
947 int size = image->height * ((image->width * image->depth + 7) >> 3);
948 int fifo_free;
949 int i, stride = info->fix.line_length;
950 u32 bpp = info->var.bits_per_pixel;
951 u32 dstfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
952 u8 *chardata = (u8 *) image->data;
953 u32 srcfmt;
954 u32 dx = image->dx;
955 u32 dy = image->dy;
956 u32 dstbase = 0;
957
958 if (image->depth != 1) {
959 #ifdef BROKEN_CODE
960 banshee_make_room(par, 6 + ((size + 3) >> 2));
961 srcfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13) |
962 0x400000;
963 #else
964 cfb_imageblit(info, image);
965 #endif
966 return;
967 }
968 banshee_make_room(par, 9);
969 switch (info->fix.visual) {
970 case FB_VISUAL_PSEUDOCOLOR:
971 tdfx_outl(par, COLORFORE, image->fg_color);
972 tdfx_outl(par, COLORBACK, image->bg_color);
973 break;
974 case FB_VISUAL_TRUECOLOR:
975 default:
976 tdfx_outl(par, COLORFORE,
977 par->palette[image->fg_color]);
978 tdfx_outl(par, COLORBACK,
979 par->palette[image->bg_color]);
980 }
981 #ifdef __BIG_ENDIAN
982 srcfmt = 0x400000 | BIT(20);
983 #else
984 srcfmt = 0x400000;
985 #endif
986 /* assume always image->height < 4096 */
987 if (dy + image->height > 4095) {
988 dstbase = stride * dy;
989 dy = 0;
990 }
991 /* assume always image->width < 4096 */
992 if (dx + image->width > 4095) {
993 dstbase += dx * bpp >> 3;
994 dx = 0;
995 }
996
997 tdfx_outl(par, DSTBASE, dstbase);
998 tdfx_outl(par, SRCXY, 0);
999 tdfx_outl(par, DSTXY, dx | (dy << 16));
1000 tdfx_outl(par, COMMAND_2D,
1001 COMMAND_2D_H2S_BITBLT | (TDFX_ROP_COPY << 24));
1002 tdfx_outl(par, SRCFORMAT, srcfmt);
1003 tdfx_outl(par, DSTFORMAT, dstfmt);
1004 tdfx_outl(par, DSTSIZE, image->width | (image->height << 16));
1005
1006 /* A count of how many free FIFO entries we've requested.
1007 * When this goes negative, we need to request more. */
1008 fifo_free = 0;
1009
1010 /* Send four bytes at a time of data */
1011 for (i = (size >> 2); i > 0; i--) {
1012 if (--fifo_free < 0) {
1013 fifo_free = 31;
1014 banshee_make_room(par, fifo_free);
1015 }
1016 tdfx_outl(par, LAUNCH_2D, *(u32 *)chardata);
1017 chardata += 4;
1018 }
1019
1020 /* Send the leftovers now */
1021 banshee_make_room(par, 3);
1022 switch (size % 4) {
1023 case 0:
1024 break;
1025 case 1:
1026 tdfx_outl(par, LAUNCH_2D, *chardata);
1027 break;
1028 case 2:
1029 tdfx_outl(par, LAUNCH_2D, *(u16 *)chardata);
1030 break;
1031 case 3:
1032 tdfx_outl(par, LAUNCH_2D,
1033 *(u16 *)chardata | (chardata[3] << 24));
1034 break;
1035 }
1036 }
1037 #endif /* CONFIG_FB_3DFX_ACCEL */
1038
1039 static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1040 {
1041 struct tdfx_par *par = info->par;
1042 u32 vidcfg;
1043
1044 if (!hwcursor)
1045 return -EINVAL; /* just to force soft_cursor() call */
1046
1047 /* Too large of a cursor or wrong bpp :-( */
1048 if (cursor->image.width > 64 ||
1049 cursor->image.height > 64 ||
1050 cursor->image.depth > 1)
1051 return -EINVAL;
1052
1053 vidcfg = tdfx_inl(par, VIDPROCCFG);
1054 if (cursor->enable)
1055 tdfx_outl(par, VIDPROCCFG, vidcfg | VIDCFG_HWCURSOR_ENABLE);
1056 else
1057 tdfx_outl(par, VIDPROCCFG, vidcfg & ~VIDCFG_HWCURSOR_ENABLE);
1058
1059 /*
1060 * If the cursor is not be changed this means either we want the
1061 * current cursor state (if enable is set) or we want to query what
1062 * we can do with the cursor (if enable is not set)
1063 */
1064 if (!cursor->set)
1065 return 0;
1066
1067 /* fix cursor color - XFree86 forgets to restore it properly */
1068 if (cursor->set & FB_CUR_SETCMAP) {
1069 struct fb_cmap cmap = info->cmap;
1070 u32 bg_idx = cursor->image.bg_color;
1071 u32 fg_idx = cursor->image.fg_color;
1072 unsigned long bg_color, fg_color;
1073
1074 fg_color = (((u32)cmap.red[fg_idx] & 0xff00) << 8) |
1075 (((u32)cmap.green[fg_idx] & 0xff00) << 0) |
1076 (((u32)cmap.blue[fg_idx] & 0xff00) >> 8);
1077 bg_color = (((u32)cmap.red[bg_idx] & 0xff00) << 8) |
1078 (((u32)cmap.green[bg_idx] & 0xff00) << 0) |
1079 (((u32)cmap.blue[bg_idx] & 0xff00) >> 8);
1080 banshee_make_room(par, 2);
1081 tdfx_outl(par, HWCURC0, bg_color);
1082 tdfx_outl(par, HWCURC1, fg_color);
1083 }
1084
1085 if (cursor->set & FB_CUR_SETPOS) {
1086 int x = cursor->image.dx;
1087 int y = cursor->image.dy - info->var.yoffset;
1088
1089 x += 63;
1090 y += 63;
1091 banshee_make_room(par, 1);
1092 tdfx_outl(par, HWCURLOC, (y << 16) + x);
1093 }
1094 if (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE)) {
1095 /*
1096 * Voodoo 3 and above cards use 2 monochrome cursor patterns.
1097 * The reason is so the card can fetch 8 words at a time
1098 * and are stored on chip for use for the next 8 scanlines.
1099 * This reduces the number of times for access to draw the
1100 * cursor for each screen refresh.
1101 * Each pattern is a bitmap of 64 bit wide and 64 bit high
1102 * (total of 8192 bits or 1024 bytes). The two patterns are
1103 * stored in such a way that pattern 0 always resides in the
1104 * lower half (least significant 64 bits) of a 128 bit word
1105 * and pattern 1 the upper half. If you examine the data of
1106 * the cursor image the graphics card uses then from the
1107 * beginning you see line one of pattern 0, line one of
1108 * pattern 1, line two of pattern 0, line two of pattern 1,
1109 * etc etc. The linear stride for the cursor is always 16 bytes
1110 * (128 bits) which is the maximum cursor width times two for
1111 * the two monochrome patterns.
1112 */
1113 u8 __iomem *cursorbase = info->screen_base + info->fix.smem_len;
1114 u8 *bitmap = (u8 *)cursor->image.data;
1115 u8 *mask = (u8 *)cursor->mask;
1116 int i;
1117
1118 fb_memset(cursorbase, 0, 1024);
1119
1120 for (i = 0; i < cursor->image.height; i++) {
1121 int h = 0;
1122 int j = (cursor->image.width + 7) >> 3;
1123
1124 for (; j > 0; j--) {
1125 u8 data = *mask ^ *bitmap;
1126 if (cursor->rop == ROP_COPY)
1127 data = *mask & *bitmap;
1128 /* Pattern 0. Copy the cursor mask to it */
1129 fb_writeb(*mask, cursorbase + h);
1130 mask++;
1131 /* Pattern 1. Copy the cursor bitmap to it */
1132 fb_writeb(data, cursorbase + h + 8);
1133 bitmap++;
1134 h++;
1135 }
1136 cursorbase += 16;
1137 }
1138 }
1139 return 0;
1140 }
1141
1142 static struct fb_ops tdfxfb_ops = {
1143 .owner = THIS_MODULE,
1144 .fb_check_var = tdfxfb_check_var,
1145 .fb_set_par = tdfxfb_set_par,
1146 .fb_setcolreg = tdfxfb_setcolreg,
1147 .fb_blank = tdfxfb_blank,
1148 .fb_pan_display = tdfxfb_pan_display,
1149 .fb_sync = banshee_wait_idle,
1150 .fb_cursor = tdfxfb_cursor,
1151 #ifdef CONFIG_FB_3DFX_ACCEL
1152 .fb_fillrect = tdfxfb_fillrect,
1153 .fb_copyarea = tdfxfb_copyarea,
1154 .fb_imageblit = tdfxfb_imageblit,
1155 #else
1156 .fb_fillrect = cfb_fillrect,
1157 .fb_copyarea = cfb_copyarea,
1158 .fb_imageblit = cfb_imageblit,
1159 #endif
1160 };
1161
1162 #ifdef CONFIG_FB_3DFX_I2C
1163 /* The voo GPIO registers don't have individual masks for each bit
1164 so we always have to read before writing. */
1165
1166 static void tdfxfb_i2c_setscl(void *data, int val)
1167 {
1168 struct tdfxfb_i2c_chan *chan = data;
1169 struct tdfx_par *par = chan->par;
1170 unsigned int r;
1171
1172 r = tdfx_inl(par, VIDSERPARPORT);
1173 if (val)
1174 r |= I2C_SCL_OUT;
1175 else
1176 r &= ~I2C_SCL_OUT;
1177 tdfx_outl(par, VIDSERPARPORT, r);
1178 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1179 }
1180
1181 static void tdfxfb_i2c_setsda(void *data, int val)
1182 {
1183 struct tdfxfb_i2c_chan *chan = data;
1184 struct tdfx_par *par = chan->par;
1185 unsigned int r;
1186
1187 r = tdfx_inl(par, VIDSERPARPORT);
1188 if (val)
1189 r |= I2C_SDA_OUT;
1190 else
1191 r &= ~I2C_SDA_OUT;
1192 tdfx_outl(par, VIDSERPARPORT, r);
1193 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1194 }
1195
1196 /* The GPIO pins are open drain, so the pins always remain outputs.
1197 We rely on the i2c-algo-bit routines to set the pins high before
1198 reading the input from other chips. */
1199
1200 static int tdfxfb_i2c_getscl(void *data)
1201 {
1202 struct tdfxfb_i2c_chan *chan = data;
1203 struct tdfx_par *par = chan->par;
1204
1205 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SCL_IN));
1206 }
1207
1208 static int tdfxfb_i2c_getsda(void *data)
1209 {
1210 struct tdfxfb_i2c_chan *chan = data;
1211 struct tdfx_par *par = chan->par;
1212
1213 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SDA_IN));
1214 }
1215
1216 static void tdfxfb_ddc_setscl(void *data, int val)
1217 {
1218 struct tdfxfb_i2c_chan *chan = data;
1219 struct tdfx_par *par = chan->par;
1220 unsigned int r;
1221
1222 r = tdfx_inl(par, VIDSERPARPORT);
1223 if (val)
1224 r |= DDC_SCL_OUT;
1225 else
1226 r &= ~DDC_SCL_OUT;
1227 tdfx_outl(par, VIDSERPARPORT, r);
1228 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1229 }
1230
1231 static void tdfxfb_ddc_setsda(void *data, int val)
1232 {
1233 struct tdfxfb_i2c_chan *chan = data;
1234 struct tdfx_par *par = chan->par;
1235 unsigned int r;
1236
1237 r = tdfx_inl(par, VIDSERPARPORT);
1238 if (val)
1239 r |= DDC_SDA_OUT;
1240 else
1241 r &= ~DDC_SDA_OUT;
1242 tdfx_outl(par, VIDSERPARPORT, r);
1243 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1244 }
1245
1246 static int tdfxfb_ddc_getscl(void *data)
1247 {
1248 struct tdfxfb_i2c_chan *chan = data;
1249 struct tdfx_par *par = chan->par;
1250
1251 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SCL_IN));
1252 }
1253
1254 static int tdfxfb_ddc_getsda(void *data)
1255 {
1256 struct tdfxfb_i2c_chan *chan = data;
1257 struct tdfx_par *par = chan->par;
1258
1259 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SDA_IN));
1260 }
1261
1262 static int tdfxfb_setup_ddc_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1263 struct device *dev)
1264 {
1265 int rc;
1266
1267 strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
1268 chan->adapter.owner = THIS_MODULE;
1269 chan->adapter.class = I2C_CLASS_DDC;
1270 chan->adapter.algo_data = &chan->algo;
1271 chan->adapter.dev.parent = dev;
1272 chan->algo.setsda = tdfxfb_ddc_setsda;
1273 chan->algo.setscl = tdfxfb_ddc_setscl;
1274 chan->algo.getsda = tdfxfb_ddc_getsda;
1275 chan->algo.getscl = tdfxfb_ddc_getscl;
1276 chan->algo.udelay = 10;
1277 chan->algo.timeout = msecs_to_jiffies(500);
1278 chan->algo.data = chan;
1279
1280 i2c_set_adapdata(&chan->adapter, chan);
1281
1282 rc = i2c_bit_add_bus(&chan->adapter);
1283 if (rc == 0)
1284 DPRINTK("I2C bus %s registered.\n", name);
1285 else
1286 chan->par = NULL;
1287
1288 return rc;
1289 }
1290
1291 static int tdfxfb_setup_i2c_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1292 struct device *dev)
1293 {
1294 int rc;
1295
1296 strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
1297 chan->adapter.owner = THIS_MODULE;
1298 chan->adapter.algo_data = &chan->algo;
1299 chan->adapter.dev.parent = dev;
1300 chan->algo.setsda = tdfxfb_i2c_setsda;
1301 chan->algo.setscl = tdfxfb_i2c_setscl;
1302 chan->algo.getsda = tdfxfb_i2c_getsda;
1303 chan->algo.getscl = tdfxfb_i2c_getscl;
1304 chan->algo.udelay = 10;
1305 chan->algo.timeout = msecs_to_jiffies(500);
1306 chan->algo.data = chan;
1307
1308 i2c_set_adapdata(&chan->adapter, chan);
1309
1310 rc = i2c_bit_add_bus(&chan->adapter);
1311 if (rc == 0)
1312 DPRINTK("I2C bus %s registered.\n", name);
1313 else
1314 chan->par = NULL;
1315
1316 return rc;
1317 }
1318
1319 static void tdfxfb_create_i2c_busses(struct fb_info *info)
1320 {
1321 struct tdfx_par *par = info->par;
1322
1323 tdfx_outl(par, VIDINFORMAT, 0x8160);
1324 tdfx_outl(par, VIDSERPARPORT, 0xcffc0020);
1325
1326 par->chan[0].par = par;
1327 par->chan[1].par = par;
1328
1329 tdfxfb_setup_ddc_bus(&par->chan[0], "Voodoo3-DDC", info->dev);
1330 tdfxfb_setup_i2c_bus(&par->chan[1], "Voodoo3-I2C", info->dev);
1331 }
1332
1333 static void tdfxfb_delete_i2c_busses(struct tdfx_par *par)
1334 {
1335 if (par->chan[0].par)
1336 i2c_del_adapter(&par->chan[0].adapter);
1337 par->chan[0].par = NULL;
1338
1339 if (par->chan[1].par)
1340 i2c_del_adapter(&par->chan[1].adapter);
1341 par->chan[1].par = NULL;
1342 }
1343
1344 static int tdfxfb_probe_i2c_connector(struct tdfx_par *par,
1345 struct fb_monspecs *specs)
1346 {
1347 u8 *edid = NULL;
1348
1349 DPRINTK("Probe DDC Bus\n");
1350 if (par->chan[0].par)
1351 edid = fb_ddc_read(&par->chan[0].adapter);
1352
1353 if (edid) {
1354 fb_edid_to_monspecs(edid, specs);
1355 kfree(edid);
1356 return 0;
1357 }
1358 return 1;
1359 }
1360 #endif /* CONFIG_FB_3DFX_I2C */
1361
1362 /**
1363 * tdfxfb_probe - Device Initializiation
1364 *
1365 * @pdev: PCI Device to initialize
1366 * @id: PCI Device ID
1367 *
1368 * Initializes and allocates resources for PCI device @pdev.
1369 *
1370 */
1371 static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1372 {
1373 struct tdfx_par *default_par;
1374 struct fb_info *info;
1375 int err, lpitch;
1376 struct fb_monspecs *specs;
1377 bool found;
1378
1379 err = pci_enable_device(pdev);
1380 if (err) {
1381 printk(KERN_ERR "tdfxfb: Can't enable pdev: %d\n", err);
1382 return err;
1383 }
1384
1385 info = framebuffer_alloc(sizeof(struct tdfx_par), &pdev->dev);
1386
1387 if (!info)
1388 return -ENOMEM;
1389
1390 default_par = info->par;
1391 info->fix = tdfx_fix;
1392
1393 /* Configure the default fb_fix_screeninfo first */
1394 switch (pdev->device) {
1395 case PCI_DEVICE_ID_3DFX_BANSHEE:
1396 strcpy(info->fix.id, "3Dfx Banshee");
1397 default_par->max_pixclock = BANSHEE_MAX_PIXCLOCK;
1398 break;
1399 case PCI_DEVICE_ID_3DFX_VOODOO3:
1400 strcpy(info->fix.id, "3Dfx Voodoo3");
1401 default_par->max_pixclock = VOODOO3_MAX_PIXCLOCK;
1402 break;
1403 case PCI_DEVICE_ID_3DFX_VOODOO5:
1404 strcpy(info->fix.id, "3Dfx Voodoo5");
1405 default_par->max_pixclock = VOODOO5_MAX_PIXCLOCK;
1406 break;
1407 }
1408
1409 info->fix.mmio_start = pci_resource_start(pdev, 0);
1410 info->fix.mmio_len = pci_resource_len(pdev, 0);
1411 if (!request_mem_region(info->fix.mmio_start, info->fix.mmio_len,
1412 "tdfx regbase")) {
1413 printk(KERN_ERR "tdfxfb: Can't reserve regbase\n");
1414 goto out_err;
1415 }
1416
1417 default_par->regbase_virt =
1418 ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
1419 if (!default_par->regbase_virt) {
1420 printk(KERN_ERR "fb: Can't remap %s register area.\n",
1421 info->fix.id);
1422 goto out_err_regbase;
1423 }
1424
1425 info->fix.smem_start = pci_resource_start(pdev, 1);
1426 info->fix.smem_len = do_lfb_size(default_par, pdev->device);
1427 if (!info->fix.smem_len) {
1428 printk(KERN_ERR "fb: Can't count %s memory.\n", info->fix.id);
1429 goto out_err_regbase;
1430 }
1431
1432 if (!request_mem_region(info->fix.smem_start,
1433 pci_resource_len(pdev, 1), "tdfx smem")) {
1434 printk(KERN_ERR "tdfxfb: Can't reserve smem\n");
1435 goto out_err_regbase;
1436 }
1437
1438 info->screen_base = ioremap_wc(info->fix.smem_start,
1439 info->fix.smem_len);
1440 if (!info->screen_base) {
1441 printk(KERN_ERR "fb: Can't remap %s framebuffer.\n",
1442 info->fix.id);
1443 goto out_err_screenbase;
1444 }
1445
1446 default_par->iobase = pci_resource_start(pdev, 2);
1447
1448 if (!request_region(pci_resource_start(pdev, 2),
1449 pci_resource_len(pdev, 2), "tdfx iobase")) {
1450 printk(KERN_ERR "tdfxfb: Can't reserve iobase\n");
1451 goto out_err_screenbase;
1452 }
1453
1454 printk(KERN_INFO "fb: %s memory = %dK\n", info->fix.id,
1455 info->fix.smem_len >> 10);
1456
1457 if (!nomtrr)
1458 default_par->wc_cookie= arch_phys_wc_add(info->fix.smem_start,
1459 info->fix.smem_len);
1460
1461 info->fix.ypanstep = nopan ? 0 : 1;
1462 info->fix.ywrapstep = nowrap ? 0 : 1;
1463
1464 info->fbops = &tdfxfb_ops;
1465 info->pseudo_palette = default_par->palette;
1466 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1467 #ifdef CONFIG_FB_3DFX_ACCEL
1468 info->flags |= FBINFO_HWACCEL_FILLRECT |
1469 FBINFO_HWACCEL_COPYAREA |
1470 FBINFO_HWACCEL_IMAGEBLIT |
1471 FBINFO_READS_FAST;
1472 #endif
1473 /* reserve 8192 bits for cursor */
1474 /* the 2.4 driver says PAGE_MASK boundary is not enough for Voodoo4 */
1475 if (hwcursor)
1476 info->fix.smem_len = (info->fix.smem_len - 1024) &
1477 (PAGE_MASK << 1);
1478 specs = &info->monspecs;
1479 found = false;
1480 info->var.bits_per_pixel = 8;
1481 #ifdef CONFIG_FB_3DFX_I2C
1482 tdfxfb_create_i2c_busses(info);
1483 err = tdfxfb_probe_i2c_connector(default_par, specs);
1484
1485 if (!err) {
1486 if (specs->modedb == NULL)
1487 DPRINTK("Unable to get Mode Database\n");
1488 else {
1489 const struct fb_videomode *m;
1490
1491 fb_videomode_to_modelist(specs->modedb,
1492 specs->modedb_len,
1493 &info->modelist);
1494 m = fb_find_best_display(specs, &info->modelist);
1495 if (m) {
1496 fb_videomode_to_var(&info->var, m);
1497 /* fill all other info->var's fields */
1498 if (tdfxfb_check_var(&info->var, info) < 0)
1499 info->var = tdfx_var;
1500 else
1501 found = true;
1502 }
1503 }
1504 }
1505 #endif
1506 if (!mode_option && !found)
1507 mode_option = "640x480@60";
1508
1509 if (mode_option) {
1510 err = fb_find_mode(&info->var, info, mode_option,
1511 specs->modedb, specs->modedb_len,
1512 NULL, info->var.bits_per_pixel);
1513 if (!err || err == 4)
1514 info->var = tdfx_var;
1515 }
1516
1517 if (found) {
1518 fb_destroy_modedb(specs->modedb);
1519 specs->modedb = NULL;
1520 }
1521
1522 /* maximize virtual vertical length */
1523 lpitch = info->var.xres_virtual * ((info->var.bits_per_pixel + 7) >> 3);
1524 info->var.yres_virtual = info->fix.smem_len / lpitch;
1525 if (info->var.yres_virtual < info->var.yres)
1526 goto out_err_iobase;
1527
1528 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
1529 printk(KERN_ERR "tdfxfb: Can't allocate color map\n");
1530 goto out_err_iobase;
1531 }
1532
1533 if (register_framebuffer(info) < 0) {
1534 printk(KERN_ERR "tdfxfb: can't register framebuffer\n");
1535 fb_dealloc_cmap(&info->cmap);
1536 goto out_err_iobase;
1537 }
1538 /*
1539 * Our driver data
1540 */
1541 pci_set_drvdata(pdev, info);
1542 return 0;
1543
1544 out_err_iobase:
1545 #ifdef CONFIG_FB_3DFX_I2C
1546 tdfxfb_delete_i2c_busses(default_par);
1547 #endif
1548 arch_phys_wc_del(default_par->wc_cookie);
1549 release_region(pci_resource_start(pdev, 2),
1550 pci_resource_len(pdev, 2));
1551 out_err_screenbase:
1552 if (info->screen_base)
1553 iounmap(info->screen_base);
1554 release_mem_region(info->fix.smem_start, pci_resource_len(pdev, 1));
1555 out_err_regbase:
1556 /*
1557 * Cleanup after anything that was remapped/allocated.
1558 */
1559 if (default_par->regbase_virt)
1560 iounmap(default_par->regbase_virt);
1561 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1562 out_err:
1563 framebuffer_release(info);
1564 return -ENXIO;
1565 }
1566
1567 #ifndef MODULE
1568 static void __init tdfxfb_setup(char *options)
1569 {
1570 char *this_opt;
1571
1572 if (!options || !*options)
1573 return;
1574
1575 while ((this_opt = strsep(&options, ",")) != NULL) {
1576 if (!*this_opt)
1577 continue;
1578 if (!strcmp(this_opt, "nopan")) {
1579 nopan = 1;
1580 } else if (!strcmp(this_opt, "nowrap")) {
1581 nowrap = 1;
1582 } else if (!strncmp(this_opt, "hwcursor=", 9)) {
1583 hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
1584 } else if (!strncmp(this_opt, "nomtrr", 6)) {
1585 nomtrr = 1;
1586 } else {
1587 mode_option = this_opt;
1588 }
1589 }
1590 }
1591 #endif
1592
1593 /**
1594 * tdfxfb_remove - Device removal
1595 *
1596 * @pdev: PCI Device to cleanup
1597 *
1598 * Releases all resources allocated during the course of the driver's
1599 * lifetime for the PCI device @pdev.
1600 *
1601 */
1602 static void tdfxfb_remove(struct pci_dev *pdev)
1603 {
1604 struct fb_info *info = pci_get_drvdata(pdev);
1605 struct tdfx_par *par = info->par;
1606
1607 unregister_framebuffer(info);
1608 #ifdef CONFIG_FB_3DFX_I2C
1609 tdfxfb_delete_i2c_busses(par);
1610 #endif
1611 arch_phys_wc_del(par->wc_cookie);
1612 iounmap(par->regbase_virt);
1613 iounmap(info->screen_base);
1614
1615 /* Clean up after reserved regions */
1616 release_region(pci_resource_start(pdev, 2),
1617 pci_resource_len(pdev, 2));
1618 release_mem_region(pci_resource_start(pdev, 1),
1619 pci_resource_len(pdev, 1));
1620 release_mem_region(pci_resource_start(pdev, 0),
1621 pci_resource_len(pdev, 0));
1622 fb_dealloc_cmap(&info->cmap);
1623 framebuffer_release(info);
1624 }
1625
1626 static int __init tdfxfb_init(void)
1627 {
1628 #ifndef MODULE
1629 char *option = NULL;
1630
1631 if (fb_get_options("tdfxfb", &option))
1632 return -ENODEV;
1633
1634 tdfxfb_setup(option);
1635 #endif
1636 return pci_register_driver(&tdfxfb_driver);
1637 }
1638
1639 static void __exit tdfxfb_exit(void)
1640 {
1641 pci_unregister_driver(&tdfxfb_driver);
1642 }
1643
1644 MODULE_AUTHOR("Hannu Mallat <hmallat@cc.hut.fi>");
1645 MODULE_DESCRIPTION("3Dfx framebuffer device driver");
1646 MODULE_LICENSE("GPL");
1647
1648 module_param(hwcursor, int, 0644);
1649 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1650 "(1=enable, 0=disable, default=1)");
1651 module_param(mode_option, charp, 0);
1652 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
1653 module_param(nomtrr, bool, 0);
1654 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (default: enabled)");
1655
1656 module_init(tdfxfb_init);
1657 module_exit(tdfxfb_exit);
Linux with added FPC-III support