]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/video/fbdev/tdfxfb.c
projects / mirror_ubuntu-jammy-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
treewide: Add SPDX license identifier for more missed files
[mirror_ubuntu-jammy-kernel.git] / drivers / video / fbdev / tdfxfb.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 *
4 * tdfxfb.c
5 *
6 * Author: Hannu Mallat <hmallat@cc.hut.fi>
7 *
8 * Copyright © 1999 Hannu Mallat
9 * All rights reserved
10 *
11 * Created : Thu Sep 23 18:17:43 1999, hmallat
12 * Last modified: Tue Nov 2 21:19:47 1999, hmallat
13 *
14 * I2C part copied from the i2c-voodoo3.c driver by:
15 * Frodo Looijaard <frodol@dds.nl>,
16 * Philip Edelbrock <phil@netroedge.com>,
17 * Ralph Metzler <rjkm@thp.uni-koeln.de>, and
18 * Mark D. Studebaker <mdsxyz123@yahoo.com>
19 *
20 * Lots of the information here comes from the Daryll Strauss' Banshee
21 * patches to the XF86 server, and the rest comes from the 3dfx
22 * Banshee specification. I'm very much indebted to Daryll for his
23 * work on the X server.
24 *
25 * Voodoo3 support was contributed Harold Oga. Lots of additions
26 * (proper acceleration, 24 bpp, hardware cursor) and bug fixes by Attila
27 * Kesmarki. Thanks guys!
28 *
29 * Voodoo1 and Voodoo2 support aren't relevant to this driver as they
30 * behave very differently from the Voodoo3/4/5. For anyone wanting to
31 * use frame buffer on the Voodoo1/2, see the sstfb driver (which is
32 * located at http://www.sourceforge.net/projects/sstfb).
33 *
34 * While I _am_ grateful to 3Dfx for releasing the specs for Banshee,
35 * I do wish the next version is a bit more complete. Without the XF86
36 * patches I couldn't have gotten even this far... for instance, the
37 * extensions to the VGA register set go completely unmentioned in the
38 * spec! Also, lots of references are made to the 'SST core', but no
39 * spec is publicly available, AFAIK.
40 *
41 * The structure of this driver comes pretty much from the Permedia
42 * driver by Ilario Nardinocchi, which in turn is based on skeletonfb.
43 *
44 * TODO:
45 * - multihead support (basically need to support an array of fb_infos)
46 * - support other architectures (PPC, Alpha); does the fact that the VGA
47 * core can be accessed only thru I/O (not memory mapped) complicate
48 * things?
49 *
50 * Version history:
51 *
52 * 0.1.4 (released 2002-05-28) ported over to new fbdev api by James Simmons
53 *
54 * 0.1.3 (released 1999-11-02) added Attila's panning support, code
55 * reorg, hwcursor address page size alignment
56 * (for mmapping both frame buffer and regs),
57 * and my changes to get rid of hardcoded
58 * VGA i/o register locations (uses PCI
59 * configuration info now)
60 * 0.1.2 (released 1999-10-19) added Attila Kesmarki's bug fixes and
61 * improvements
62 * 0.1.1 (released 1999-10-07) added Voodoo3 support by Harold Oga.
63 * 0.1.0 (released 1999-10-06) initial version
64 *
65 */
66
67 #include <linux/module.h>
68 #include <linux/kernel.h>
69 #include <linux/errno.h>
70 #include <linux/string.h>
71 #include <linux/mm.h>
72 #include <linux/slab.h>
73 #include <linux/fb.h>
74 #include <linux/init.h>
75 #include <linux/pci.h>
76 #include <asm/io.h>
77
78 #include <video/tdfx.h>
79
80 #define DPRINTK(a, b...) pr_debug("fb: %s: " a, __func__ , ## b)
81
82 #define BANSHEE_MAX_PIXCLOCK 270000
83 #define VOODOO3_MAX_PIXCLOCK 300000
84 #define VOODOO5_MAX_PIXCLOCK 350000
85
86 static const struct fb_fix_screeninfo tdfx_fix = {
87 .type = FB_TYPE_PACKED_PIXELS,
88 .visual = FB_VISUAL_PSEUDOCOLOR,
89 .ypanstep = 1,
90 .ywrapstep = 1,
91 .accel = FB_ACCEL_3DFX_BANSHEE
92 };
93
94 static const struct fb_var_screeninfo tdfx_var = {
95 /* "640x480, 8 bpp @ 60 Hz */
96 .xres = 640,
97 .yres = 480,
98 .xres_virtual = 640,
99 .yres_virtual = 1024,
100 .bits_per_pixel = 8,
101 .red = {0, 8, 0},
102 .blue = {0, 8, 0},
103 .green = {0, 8, 0},
104 .activate = FB_ACTIVATE_NOW,
105 .height = -1,
106 .width = -1,
107 .accel_flags = FB_ACCELF_TEXT,
108 .pixclock = 39722,
109 .left_margin = 40,
110 .right_margin = 24,
111 .upper_margin = 32,
112 .lower_margin = 11,
113 .hsync_len = 96,
114 .vsync_len = 2,
115 .vmode = FB_VMODE_NONINTERLACED
116 };
117
118 /*
119 * PCI driver prototypes
120 */
121 static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id);
122 static void tdfxfb_remove(struct pci_dev *pdev);
123
124 static const struct pci_device_id tdfxfb_id_table[] = {
125 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE,
126 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
127 0xff0000, 0 },
128 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3,
129 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
130 0xff0000, 0 },
131 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO5,
132 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
133 0xff0000, 0 },
134 { 0, }
135 };
136
137 static struct pci_driver tdfxfb_driver = {
138 .name = "tdfxfb",
139 .id_table = tdfxfb_id_table,
140 .probe = tdfxfb_probe,
141 .remove = tdfxfb_remove,
142 };
143
144 MODULE_DEVICE_TABLE(pci, tdfxfb_id_table);
145
146 /*
147 * Driver data
148 */
149 static int nopan;
150 static int nowrap = 1; /* not implemented (yet) */
151 static int hwcursor = 1;
152 static char *mode_option;
153 static bool nomtrr;
154
155 /* -------------------------------------------------------------------------
156 * Hardware-specific funcions
157 * ------------------------------------------------------------------------- */
158
159 static inline u8 vga_inb(struct tdfx_par *par, u32 reg)
160 {
161 return inb(par->iobase + reg - 0x300);
162 }
163
164 static inline void vga_outb(struct tdfx_par *par, u32 reg, u8 val)
165 {
166 outb(val, par->iobase + reg - 0x300);
167 }
168
169 static inline void gra_outb(struct tdfx_par *par, u32 idx, u8 val)
170 {
171 vga_outb(par, GRA_I, idx);
172 wmb();
173 vga_outb(par, GRA_D, val);
174 wmb();
175 }
176
177 static inline void seq_outb(struct tdfx_par *par, u32 idx, u8 val)
178 {
179 vga_outb(par, SEQ_I, idx);
180 wmb();
181 vga_outb(par, SEQ_D, val);
182 wmb();
183 }
184
185 static inline u8 seq_inb(struct tdfx_par *par, u32 idx)
186 {
187 vga_outb(par, SEQ_I, idx);
188 mb();
189 return vga_inb(par, SEQ_D);
190 }
191
192 static inline void crt_outb(struct tdfx_par *par, u32 idx, u8 val)
193 {
194 vga_outb(par, CRT_I, idx);
195 wmb();
196 vga_outb(par, CRT_D, val);
197 wmb();
198 }
199
200 static inline u8 crt_inb(struct tdfx_par *par, u32 idx)
201 {
202 vga_outb(par, CRT_I, idx);
203 mb();
204 return vga_inb(par, CRT_D);
205 }
206
207 static inline void att_outb(struct tdfx_par *par, u32 idx, u8 val)
208 {
209 unsigned char tmp;
210
211 tmp = vga_inb(par, IS1_R);
212 vga_outb(par, ATT_IW, idx);
213 vga_outb(par, ATT_IW, val);
214 }
215
216 static inline void vga_disable_video(struct tdfx_par *par)
217 {
218 unsigned char s;
219
220 s = seq_inb(par, 0x01) | 0x20;
221 seq_outb(par, 0x00, 0x01);
222 seq_outb(par, 0x01, s);
223 seq_outb(par, 0x00, 0x03);
224 }
225
226 static inline void vga_enable_video(struct tdfx_par *par)
227 {
228 unsigned char s;
229
230 s = seq_inb(par, 0x01) & 0xdf;
231 seq_outb(par, 0x00, 0x01);
232 seq_outb(par, 0x01, s);
233 seq_outb(par, 0x00, 0x03);
234 }
235
236 static inline void vga_enable_palette(struct tdfx_par *par)
237 {
238 vga_inb(par, IS1_R);
239 mb();
240 vga_outb(par, ATT_IW, 0x20);
241 }
242
243 static inline u32 tdfx_inl(struct tdfx_par *par, unsigned int reg)
244 {
245 return readl(par->regbase_virt + reg);
246 }
247
248 static inline void tdfx_outl(struct tdfx_par *par, unsigned int reg, u32 val)
249 {
250 writel(val, par->regbase_virt + reg);
251 }
252
253 static inline void banshee_make_room(struct tdfx_par *par, int size)
254 {
255 /* Note: The Voodoo3's onboard FIFO has 32 slots. This loop
256 * won't quit if you ask for more. */
257 while ((tdfx_inl(par, STATUS) & 0x1f) < size - 1)
258 cpu_relax();
259 }
260
261 static int banshee_wait_idle(struct fb_info *info)
262 {
263 struct tdfx_par *par = info->par;
264 int i = 0;
265
266 banshee_make_room(par, 1);
267 tdfx_outl(par, COMMAND_3D, COMMAND_3D_NOP);
268
269 do {
270 if ((tdfx_inl(par, STATUS) & STATUS_BUSY) == 0)
271 i++;
272 } while (i < 3);
273
274 return 0;
275 }
276
277 /*
278 * Set the color of a palette entry in 8bpp mode
279 */
280 static inline void do_setpalentry(struct tdfx_par *par, unsigned regno, u32 c)
281 {
282 banshee_make_room(par, 2);
283 tdfx_outl(par, DACADDR, regno);
284 /* read after write makes it working */
285 tdfx_inl(par, DACADDR);
286 tdfx_outl(par, DACDATA, c);
287 }
288
289 static u32 do_calc_pll(int freq, int *freq_out)
290 {
291 int m, n, k, best_m, best_n, best_k, best_error;
292 int fref = 14318;
293
294 best_error = freq;
295 best_n = best_m = best_k = 0;
296
297 for (k = 3; k >= 0; k--) {
298 for (m = 63; m >= 0; m--) {
299 /*
300 * Estimate value of n that produces target frequency
301 * with current m and k
302 */
303 int n_estimated = ((freq * (m + 2) << k) / fref) - 2;
304
305 /* Search neighborhood of estimated n */
306 for (n = max(0, n_estimated);
307 n <= min(255, n_estimated + 1);
308 n++) {
309 /*
310 * Calculate PLL freqency with current m, k and
311 * estimated n
312 */
313 int f = (fref * (n + 2) / (m + 2)) >> k;
314 int error = abs(f - freq);
315
316 /*
317 * If this is the closest we've come to the
318 * target frequency then remember n, m and k
319 */
320 if (error < best_error) {
321 best_error = error;
322 best_n = n;
323 best_m = m;
324 best_k = k;
325 }
326 }
327 }
328 }
329
330 n = best_n;
331 m = best_m;
332 k = best_k;
333 *freq_out = (fref * (n + 2) / (m + 2)) >> k;
334
335 return (n << 8) | (m << 2) | k;
336 }
337
338 static void do_write_regs(struct fb_info *info, struct banshee_reg *reg)
339 {
340 struct tdfx_par *par = info->par;
341 int i;
342
343 banshee_wait_idle(info);
344
345 tdfx_outl(par, MISCINIT1, tdfx_inl(par, MISCINIT1) | 0x01);
346
347 crt_outb(par, 0x11, crt_inb(par, 0x11) & 0x7f); /* CRT unprotect */
348
349 banshee_make_room(par, 3);
350 tdfx_outl(par, VGAINIT1, reg->vgainit1 & 0x001FFFFF);
351 tdfx_outl(par, VIDPROCCFG, reg->vidcfg & ~0x00000001);
352 #if 0
353 tdfx_outl(par, PLLCTRL1, reg->mempll);
354 tdfx_outl(par, PLLCTRL2, reg->gfxpll);
355 #endif
356 tdfx_outl(par, PLLCTRL0, reg->vidpll);
357
358 vga_outb(par, MISC_W, reg->misc[0x00] | 0x01);
359
360 for (i = 0; i < 5; i++)
361 seq_outb(par, i, reg->seq[i]);
362
363 for (i = 0; i < 25; i++)
364 crt_outb(par, i, reg->crt[i]);
365
366 for (i = 0; i < 9; i++)
367 gra_outb(par, i, reg->gra[i]);
368
369 for (i = 0; i < 21; i++)
370 att_outb(par, i, reg->att[i]);
371
372 crt_outb(par, 0x1a, reg->ext[0]);
373 crt_outb(par, 0x1b, reg->ext[1]);
374
375 vga_enable_palette(par);
376 vga_enable_video(par);
377
378 banshee_make_room(par, 9);
379 tdfx_outl(par, VGAINIT0, reg->vgainit0);
380 tdfx_outl(par, DACMODE, reg->dacmode);
381 tdfx_outl(par, VIDDESKSTRIDE, reg->stride);
382 tdfx_outl(par, HWCURPATADDR, reg->curspataddr);
383
384 tdfx_outl(par, VIDSCREENSIZE, reg->screensize);
385 tdfx_outl(par, VIDDESKSTART, reg->startaddr);
386 tdfx_outl(par, VIDPROCCFG, reg->vidcfg);
387 tdfx_outl(par, VGAINIT1, reg->vgainit1);
388 tdfx_outl(par, MISCINIT0, reg->miscinit0);
389
390 banshee_make_room(par, 8);
391 tdfx_outl(par, SRCBASE, reg->startaddr);
392 tdfx_outl(par, DSTBASE, reg->startaddr);
393 tdfx_outl(par, COMMANDEXTRA_2D, 0);
394 tdfx_outl(par, CLIP0MIN, 0);
395 tdfx_outl(par, CLIP0MAX, 0x0fff0fff);
396 tdfx_outl(par, CLIP1MIN, 0);
397 tdfx_outl(par, CLIP1MAX, 0x0fff0fff);
398 tdfx_outl(par, SRCXY, 0);
399
400 banshee_wait_idle(info);
401 }
402
403 static unsigned long do_lfb_size(struct tdfx_par *par, unsigned short dev_id)
404 {
405 u32 draminit0 = tdfx_inl(par, DRAMINIT0);
406 u32 draminit1 = tdfx_inl(par, DRAMINIT1);
407 u32 miscinit1;
408 int num_chips = (draminit0 & DRAMINIT0_SGRAM_NUM) ? 8 : 4;
409 int chip_size; /* in MB */
410 int has_sgram = draminit1 & DRAMINIT1_MEM_SDRAM;
411
412 if (dev_id < PCI_DEVICE_ID_3DFX_VOODOO5) {
413 /* Banshee/Voodoo3 */
414 chip_size = 2;
415 if (has_sgram && !(draminit0 & DRAMINIT0_SGRAM_TYPE))
416 chip_size = 1;
417 } else {
418 /* Voodoo4/5 */
419 has_sgram = 0;
420 chip_size = draminit0 & DRAMINIT0_SGRAM_TYPE_MASK;
421 chip_size = 1 << (chip_size >> DRAMINIT0_SGRAM_TYPE_SHIFT);
422 }
423
424 /* disable block writes for SDRAM */
425 miscinit1 = tdfx_inl(par, MISCINIT1);
426 miscinit1 |= has_sgram ? 0 : MISCINIT1_2DBLOCK_DIS;
427 miscinit1 |= MISCINIT1_CLUT_INV;
428
429 banshee_make_room(par, 1);
430 tdfx_outl(par, MISCINIT1, miscinit1);
431 return num_chips * chip_size * 1024l * 1024;
432 }
433
434 /* ------------------------------------------------------------------------- */
435
436 static int tdfxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
437 {
438 struct tdfx_par *par = info->par;
439 u32 lpitch;
440
441 if (var->bits_per_pixel != 8 && var->bits_per_pixel != 16 &&
442 var->bits_per_pixel != 24 && var->bits_per_pixel != 32) {
443 DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
444 return -EINVAL;
445 }
446
447 if (var->xres != var->xres_virtual)
448 var->xres_virtual = var->xres;
449
450 if (var->yres > var->yres_virtual)
451 var->yres_virtual = var->yres;
452
453 if (var->xoffset) {
454 DPRINTK("xoffset not supported\n");
455 return -EINVAL;
456 }
457 var->yoffset = 0;
458
459 /*
460 * Banshee doesn't support interlace, but Voodoo4/5 and probably
461 * Voodoo3 do.
462 * no direct information about device id now?
463 * use max_pixclock for this...
464 */
465 if (((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) &&
466 (par->max_pixclock < VOODOO3_MAX_PIXCLOCK)) {
467 DPRINTK("interlace not supported\n");
468 return -EINVAL;
469 }
470
471 if (info->monspecs.hfmax && info->monspecs.vfmax &&
472 info->monspecs.dclkmax && fb_validate_mode(var, info) < 0) {
473 DPRINTK("mode outside monitor's specs\n");
474 return -EINVAL;
475 }
476
477 var->xres = (var->xres + 15) & ~15; /* could sometimes be 8 */
478 lpitch = var->xres * ((var->bits_per_pixel + 7) >> 3);
479
480 if (var->xres < 320 || var->xres > 2048) {
481 DPRINTK("width not supported: %u\n", var->xres);
482 return -EINVAL;
483 }
484
485 if (var->yres < 200 || var->yres > 2048) {
486 DPRINTK("height not supported: %u\n", var->yres);
487 return -EINVAL;
488 }
489
490 if (lpitch * var->yres_virtual > info->fix.smem_len) {
491 var->yres_virtual = info->fix.smem_len / lpitch;
492 if (var->yres_virtual < var->yres) {
493 DPRINTK("no memory for screen (%ux%ux%u)\n",
494 var->xres, var->yres_virtual,
495 var->bits_per_pixel);
496 return -EINVAL;
497 }
498 }
499
500 if (PICOS2KHZ(var->pixclock) > par->max_pixclock) {
501 DPRINTK("pixclock too high (%ldKHz)\n",
502 PICOS2KHZ(var->pixclock));
503 return -EINVAL;
504 }
505
506 var->transp.offset = 0;
507 var->transp.length = 0;
508 switch (var->bits_per_pixel) {
509 case 8:
510 var->red.length = 8;
511 var->red.offset = 0;
512 var->green = var->red;
513 var->blue = var->red;
514 break;
515 case 16:
516 var->red.offset = 11;
517 var->red.length = 5;
518 var->green.offset = 5;
519 var->green.length = 6;
520 var->blue.offset = 0;
521 var->blue.length = 5;
522 break;
523 case 32:
524 var->transp.offset = 24;
525 var->transp.length = 8;
526 /* fall through */
527 case 24:
528 var->red.offset = 16;
529 var->green.offset = 8;
530 var->blue.offset = 0;
531 var->red.length = var->green.length = var->blue.length = 8;
532 break;
533 }
534 var->width = -1;
535 var->height = -1;
536
537 var->accel_flags = FB_ACCELF_TEXT;
538
539 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
540 var->xres, var->yres, var->bits_per_pixel);
541 return 0;
542 }
543
544 static int tdfxfb_set_par(struct fb_info *info)
545 {
546 struct tdfx_par *par = info->par;
547 u32 hdispend = info->var.xres;
548 u32 hsyncsta = hdispend + info->var.right_margin;
549 u32 hsyncend = hsyncsta + info->var.hsync_len;
550 u32 htotal = hsyncend + info->var.left_margin;
551 u32 hd, hs, he, ht, hbs, hbe;
552 u32 vd, vs, ve, vt, vbs, vbe;
553 struct banshee_reg reg;
554 int fout, freq;
555 u32 wd;
556 u32 cpp = (info->var.bits_per_pixel + 7) >> 3;
557
558 memset(&reg, 0, sizeof(reg));
559
560 reg.vidcfg = VIDCFG_VIDPROC_ENABLE | VIDCFG_DESK_ENABLE |
561 VIDCFG_CURS_X11 |
562 ((cpp - 1) << VIDCFG_PIXFMT_SHIFT) |
563 (cpp != 1 ? VIDCFG_CLUT_BYPASS : 0);
564
565 /* PLL settings */
566 freq = PICOS2KHZ(info->var.pixclock);
567
568 reg.vidcfg &= ~VIDCFG_2X;
569
570 if (freq > par->max_pixclock / 2) {
571 freq = freq > par->max_pixclock ? par->max_pixclock : freq;
572 reg.dacmode |= DACMODE_2X;
573 reg.vidcfg |= VIDCFG_2X;
574 hdispend >>= 1;
575 hsyncsta >>= 1;
576 hsyncend >>= 1;
577 htotal >>= 1;
578 }
579
580 wd = (hdispend >> 3) - 1;
581 hd = wd;
582 hs = (hsyncsta >> 3) - 1;
583 he = (hsyncend >> 3) - 1;
584 ht = (htotal >> 3) - 1;
585 hbs = hd;
586 hbe = ht;
587
588 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
589 vd = (info->var.yres << 1) - 1;
590 vs = vd + (info->var.lower_margin << 1);
591 ve = vs + (info->var.vsync_len << 1);
592 vt = ve + (info->var.upper_margin << 1) - 1;
593 reg.screensize = info->var.xres | (info->var.yres << 13);
594 reg.vidcfg |= VIDCFG_HALF_MODE;
595 reg.crt[0x09] = 0x80;
596 } else {
597 vd = info->var.yres - 1;
598 vs = vd + info->var.lower_margin;
599 ve = vs + info->var.vsync_len;
600 vt = ve + info->var.upper_margin - 1;
601 reg.screensize = info->var.xres | (info->var.yres << 12);
602 reg.vidcfg &= ~VIDCFG_HALF_MODE;
603 }
604 vbs = vd;
605 vbe = vt;
606
607 /* this is all pretty standard VGA register stuffing */
608 reg.misc[0x00] = 0x0f |
609 (info->var.xres < 400 ? 0xa0 :
610 info->var.xres < 480 ? 0x60 :
611 info->var.xres < 768 ? 0xe0 : 0x20);
612
613 reg.gra[0x05] = 0x40;
614 reg.gra[0x06] = 0x05;
615 reg.gra[0x07] = 0x0f;
616 reg.gra[0x08] = 0xff;
617
618 reg.att[0x00] = 0x00;
619 reg.att[0x01] = 0x01;
620 reg.att[0x02] = 0x02;
621 reg.att[0x03] = 0x03;
622 reg.att[0x04] = 0x04;
623 reg.att[0x05] = 0x05;
624 reg.att[0x06] = 0x06;
625 reg.att[0x07] = 0x07;
626 reg.att[0x08] = 0x08;
627 reg.att[0x09] = 0x09;
628 reg.att[0x0a] = 0x0a;
629 reg.att[0x0b] = 0x0b;
630 reg.att[0x0c] = 0x0c;
631 reg.att[0x0d] = 0x0d;
632 reg.att[0x0e] = 0x0e;
633 reg.att[0x0f] = 0x0f;
634 reg.att[0x10] = 0x41;
635 reg.att[0x12] = 0x0f;
636
637 reg.seq[0x00] = 0x03;
638 reg.seq[0x01] = 0x01; /* fixme: clkdiv2? */
639 reg.seq[0x02] = 0x0f;
640 reg.seq[0x03] = 0x00;
641 reg.seq[0x04] = 0x0e;
642
643 reg.crt[0x00] = ht - 4;
644 reg.crt[0x01] = hd;
645 reg.crt[0x02] = hbs;
646 reg.crt[0x03] = 0x80 | (hbe & 0x1f);
647 reg.crt[0x04] = hs;
648 reg.crt[0x05] = ((hbe & 0x20) << 2) | (he & 0x1f);
649 reg.crt[0x06] = vt;
650 reg.crt[0x07] = ((vs & 0x200) >> 2) |
651 ((vd & 0x200) >> 3) |
652 ((vt & 0x200) >> 4) | 0x10 |
653 ((vbs & 0x100) >> 5) |
654 ((vs & 0x100) >> 6) |
655 ((vd & 0x100) >> 7) |
656 ((vt & 0x100) >> 8);
657 reg.crt[0x09] |= 0x40 | ((vbs & 0x200) >> 4);
658 reg.crt[0x10] = vs;
659 reg.crt[0x11] = (ve & 0x0f) | 0x20;
660 reg.crt[0x12] = vd;
661 reg.crt[0x13] = wd;
662 reg.crt[0x15] = vbs;
663 reg.crt[0x16] = vbe + 1;
664 reg.crt[0x17] = 0xc3;
665 reg.crt[0x18] = 0xff;
666
667 /* Banshee's nonvga stuff */
668 reg.ext[0x00] = (((ht & 0x100) >> 8) |
669 ((hd & 0x100) >> 6) |
670 ((hbs & 0x100) >> 4) |
671 ((hbe & 0x40) >> 1) |
672 ((hs & 0x100) >> 2) |
673 ((he & 0x20) << 2));
674 reg.ext[0x01] = (((vt & 0x400) >> 10) |
675 ((vd & 0x400) >> 8) |
676 ((vbs & 0x400) >> 6) |
677 ((vbe & 0x400) >> 4));
678
679 reg.vgainit0 = VGAINIT0_8BIT_DAC |
680 VGAINIT0_EXT_ENABLE |
681 VGAINIT0_WAKEUP_3C3 |
682 VGAINIT0_ALT_READBACK |
683 VGAINIT0_EXTSHIFTOUT;
684 reg.vgainit1 = tdfx_inl(par, VGAINIT1) & 0x1fffff;
685
686 if (hwcursor)
687 reg.curspataddr = info->fix.smem_len;
688
689 reg.cursloc = 0;
690
691 reg.cursc0 = 0;
692 reg.cursc1 = 0xffffff;
693
694 reg.stride = info->var.xres * cpp;
695 reg.startaddr = info->var.yoffset * reg.stride
696 + info->var.xoffset * cpp;
697
698 reg.vidpll = do_calc_pll(freq, &fout);
699 #if 0
700 reg.mempll = do_calc_pll(..., &fout);
701 reg.gfxpll = do_calc_pll(..., &fout);
702 #endif
703
704 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
705 reg.vidcfg |= VIDCFG_INTERLACE;
706 reg.miscinit0 = tdfx_inl(par, MISCINIT0);
707
708 #if defined(__BIG_ENDIAN)
709 switch (info->var.bits_per_pixel) {
710 case 8:
711 case 24:
712 reg.miscinit0 &= ~(1 << 30);
713 reg.miscinit0 &= ~(1 << 31);
714 break;
715 case 16:
716 reg.miscinit0 |= (1 << 30);
717 reg.miscinit0 |= (1 << 31);
718 break;
719 case 32:
720 reg.miscinit0 |= (1 << 30);
721 reg.miscinit0 &= ~(1 << 31);
722 break;
723 }
724 #endif
725 do_write_regs(info, &reg);
726
727 /* Now change fb_fix_screeninfo according to changes in par */
728 info->fix.line_length = reg.stride;
729 info->fix.visual = (info->var.bits_per_pixel == 8)
730 ? FB_VISUAL_PSEUDOCOLOR
731 : FB_VISUAL_TRUECOLOR;
732 DPRINTK("Graphics mode is now set at %dx%d depth %d\n",
733 info->var.xres, info->var.yres, info->var.bits_per_pixel);
734 return 0;
735 }
736
737 /* A handy macro shamelessly pinched from matroxfb */
738 #define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
739
740 static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
741 unsigned blue, unsigned transp,
742 struct fb_info *info)
743 {
744 struct tdfx_par *par = info->par;
745 u32 rgbcol;
746
747 if (regno >= info->cmap.len || regno > 255)
748 return 1;
749
750 /* grayscale works only partially under directcolor */
751 if (info->var.grayscale) {
752 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
753 blue = (red * 77 + green * 151 + blue * 28) >> 8;
754 green = blue;
755 red = blue;
756 }
757
758 switch (info->fix.visual) {
759 case FB_VISUAL_PSEUDOCOLOR:
760 rgbcol = (((u32)red & 0xff00) << 8) |
761 (((u32)green & 0xff00) << 0) |
762 (((u32)blue & 0xff00) >> 8);
763 do_setpalentry(par, regno, rgbcol);
764 break;
765 /* Truecolor has no hardware color palettes. */
766 case FB_VISUAL_TRUECOLOR:
767 if (regno < 16) {
768 rgbcol = (CNVT_TOHW(red, info->var.red.length) <<
769 info->var.red.offset) |
770 (CNVT_TOHW(green, info->var.green.length) <<
771 info->var.green.offset) |
772 (CNVT_TOHW(blue, info->var.blue.length) <<
773 info->var.blue.offset) |
774 (CNVT_TOHW(transp, info->var.transp.length) <<
775 info->var.transp.offset);
776 par->palette[regno] = rgbcol;
777 }
778
779 break;
780 default:
781 DPRINTK("bad depth %u\n", info->var.bits_per_pixel);
782 break;
783 }
784
785 return 0;
786 }
787
788 /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
789 static int tdfxfb_blank(int blank, struct fb_info *info)
790 {
791 struct tdfx_par *par = info->par;
792 int vgablank = 1;
793 u32 dacmode = tdfx_inl(par, DACMODE);
794
795 dacmode &= ~(BIT(1) | BIT(3));
796
797 switch (blank) {
798 case FB_BLANK_UNBLANK: /* Screen: On; HSync: On, VSync: On */
799 vgablank = 0;
800 break;
801 case FB_BLANK_NORMAL: /* Screen: Off; HSync: On, VSync: On */
802 break;
803 case FB_BLANK_VSYNC_SUSPEND: /* Screen: Off; HSync: On, VSync: Off */
804 dacmode |= BIT(3);
805 break;
806 case FB_BLANK_HSYNC_SUSPEND: /* Screen: Off; HSync: Off, VSync: On */
807 dacmode |= BIT(1);
808 break;
809 case FB_BLANK_POWERDOWN: /* Screen: Off; HSync: Off, VSync: Off */
810 dacmode |= BIT(1) | BIT(3);
811 break;
812 }
813
814 banshee_make_room(par, 1);
815 tdfx_outl(par, DACMODE, dacmode);
816 if (vgablank)
817 vga_disable_video(par);
818 else
819 vga_enable_video(par);
820 return 0;
821 }
822
823 /*
824 * Set the starting position of the visible screen to var->yoffset
825 */
826 static int tdfxfb_pan_display(struct fb_var_screeninfo *var,
827 struct fb_info *info)
828 {
829 struct tdfx_par *par = info->par;
830 u32 addr = var->yoffset * info->fix.line_length;
831
832 if (nopan || var->xoffset)
833 return -EINVAL;
834
835 banshee_make_room(par, 1);
836 tdfx_outl(par, VIDDESKSTART, addr);
837
838 return 0;
839 }
840
841 #ifdef CONFIG_FB_3DFX_ACCEL
842 /*
843 * FillRect 2D command (solidfill or invert (via ROP_XOR))
844 */
845 static void tdfxfb_fillrect(struct fb_info *info,
846 const struct fb_fillrect *rect)
847 {
848 struct tdfx_par *par = info->par;
849 u32 bpp = info->var.bits_per_pixel;
850 u32 stride = info->fix.line_length;
851 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
852 int tdfx_rop;
853 u32 dx = rect->dx;
854 u32 dy = rect->dy;
855 u32 dstbase = 0;
856
857 if (rect->rop == ROP_COPY)
858 tdfx_rop = TDFX_ROP_COPY;
859 else
860 tdfx_rop = TDFX_ROP_XOR;
861
862 /* assume always rect->height < 4096 */
863 if (dy + rect->height > 4095) {
864 dstbase = stride * dy;
865 dy = 0;
866 }
867 /* assume always rect->width < 4096 */
868 if (dx + rect->width > 4095) {
869 dstbase += dx * bpp >> 3;
870 dx = 0;
871 }
872 banshee_make_room(par, 6);
873 tdfx_outl(par, DSTFORMAT, fmt);
874 if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
875 tdfx_outl(par, COLORFORE, rect->color);
876 } else { /* FB_VISUAL_TRUECOLOR */
877 tdfx_outl(par, COLORFORE, par->palette[rect->color]);
878 }
879 tdfx_outl(par, COMMAND_2D, COMMAND_2D_FILLRECT | (tdfx_rop << 24));
880 tdfx_outl(par, DSTBASE, dstbase);
881 tdfx_outl(par, DSTSIZE, rect->width | (rect->height << 16));
882 tdfx_outl(par, LAUNCH_2D, dx | (dy << 16));
883 }
884
885 /*
886 * Screen-to-Screen BitBlt 2D command (for the bmove fb op.)
887 */
888 static void tdfxfb_copyarea(struct fb_info *info,
889 const struct fb_copyarea *area)
890 {
891 struct tdfx_par *par = info->par;
892 u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
893 u32 bpp = info->var.bits_per_pixel;
894 u32 stride = info->fix.line_length;
895 u32 blitcmd = COMMAND_2D_S2S_BITBLT | (TDFX_ROP_COPY << 24);
896 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
897 u32 dstbase = 0;
898 u32 srcbase = 0;
899
900 /* assume always area->height < 4096 */
901 if (sy + area->height > 4095) {
902 srcbase = stride * sy;
903 sy = 0;
904 }
905 /* assume always area->width < 4096 */
906 if (sx + area->width > 4095) {
907 srcbase += sx * bpp >> 3;
908 sx = 0;
909 }
910 /* assume always area->height < 4096 */
911 if (dy + area->height > 4095) {
912 dstbase = stride * dy;
913 dy = 0;
914 }
915 /* assume always area->width < 4096 */
916 if (dx + area->width > 4095) {
917 dstbase += dx * bpp >> 3;
918 dx = 0;
919 }
920
921 if (area->sx <= area->dx) {
922 /* -X */
923 blitcmd |= BIT(14);
924 sx += area->width - 1;
925 dx += area->width - 1;
926 }
927 if (area->sy <= area->dy) {
928 /* -Y */
929 blitcmd |= BIT(15);
930 sy += area->height - 1;
931 dy += area->height - 1;
932 }
933
934 banshee_make_room(par, 8);
935
936 tdfx_outl(par, SRCFORMAT, fmt);
937 tdfx_outl(par, DSTFORMAT, fmt);
938 tdfx_outl(par, COMMAND_2D, blitcmd);
939 tdfx_outl(par, DSTSIZE, area->width | (area->height << 16));
940 tdfx_outl(par, DSTXY, dx | (dy << 16));
941 tdfx_outl(par, SRCBASE, srcbase);
942 tdfx_outl(par, DSTBASE, dstbase);
943 tdfx_outl(par, LAUNCH_2D, sx | (sy << 16));
944 }
945
946 static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image)
947 {
948 struct tdfx_par *par = info->par;
949 int size = image->height * ((image->width * image->depth + 7) >> 3);
950 int fifo_free;
951 int i, stride = info->fix.line_length;
952 u32 bpp = info->var.bits_per_pixel;
953 u32 dstfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
954 u8 *chardata = (u8 *) image->data;
955 u32 srcfmt;
956 u32 dx = image->dx;
957 u32 dy = image->dy;
958 u32 dstbase = 0;
959
960 if (image->depth != 1) {
961 #ifdef BROKEN_CODE
962 banshee_make_room(par, 6 + ((size + 3) >> 2));
963 srcfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13) |
964 0x400000;
965 #else
966 cfb_imageblit(info, image);
967 #endif
968 return;
969 }
970 banshee_make_room(par, 9);
971 switch (info->fix.visual) {
972 case FB_VISUAL_PSEUDOCOLOR:
973 tdfx_outl(par, COLORFORE, image->fg_color);
974 tdfx_outl(par, COLORBACK, image->bg_color);
975 break;
976 case FB_VISUAL_TRUECOLOR:
977 default:
978 tdfx_outl(par, COLORFORE,
979 par->palette[image->fg_color]);
980 tdfx_outl(par, COLORBACK,
981 par->palette[image->bg_color]);
982 }
983 #ifdef __BIG_ENDIAN
984 srcfmt = 0x400000 | BIT(20);
985 #else
986 srcfmt = 0x400000;
987 #endif
988 /* assume always image->height < 4096 */
989 if (dy + image->height > 4095) {
990 dstbase = stride * dy;
991 dy = 0;
992 }
993 /* assume always image->width < 4096 */
994 if (dx + image->width > 4095) {
995 dstbase += dx * bpp >> 3;
996 dx = 0;
997 }
998
999 tdfx_outl(par, DSTBASE, dstbase);
1000 tdfx_outl(par, SRCXY, 0);
1001 tdfx_outl(par, DSTXY, dx | (dy << 16));
1002 tdfx_outl(par, COMMAND_2D,
1003 COMMAND_2D_H2S_BITBLT | (TDFX_ROP_COPY << 24));
1004 tdfx_outl(par, SRCFORMAT, srcfmt);
1005 tdfx_outl(par, DSTFORMAT, dstfmt);
1006 tdfx_outl(par, DSTSIZE, image->width | (image->height << 16));
1007
1008 /* A count of how many free FIFO entries we've requested.
1009 * When this goes negative, we need to request more. */
1010 fifo_free = 0;
1011
1012 /* Send four bytes at a time of data */
1013 for (i = (size >> 2); i > 0; i--) {
1014 if (--fifo_free < 0) {
1015 fifo_free = 31;
1016 banshee_make_room(par, fifo_free);
1017 }
1018 tdfx_outl(par, LAUNCH_2D, *(u32 *)chardata);
1019 chardata += 4;
1020 }
1021
1022 /* Send the leftovers now */
1023 banshee_make_room(par, 3);
1024 switch (size % 4) {
1025 case 0:
1026 break;
1027 case 1:
1028 tdfx_outl(par, LAUNCH_2D, *chardata);
1029 break;
1030 case 2:
1031 tdfx_outl(par, LAUNCH_2D, *(u16 *)chardata);
1032 break;
1033 case 3:
1034 tdfx_outl(par, LAUNCH_2D,
1035 *(u16 *)chardata | (chardata[3] << 24));
1036 break;
1037 }
1038 }
1039 #endif /* CONFIG_FB_3DFX_ACCEL */
1040
1041 static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1042 {
1043 struct tdfx_par *par = info->par;
1044 u32 vidcfg;
1045
1046 if (!hwcursor)
1047 return -EINVAL; /* just to force soft_cursor() call */
1048
1049 /* Too large of a cursor or wrong bpp :-( */
1050 if (cursor->image.width > 64 ||
1051 cursor->image.height > 64 ||
1052 cursor->image.depth > 1)
1053 return -EINVAL;
1054
1055 vidcfg = tdfx_inl(par, VIDPROCCFG);
1056 if (cursor->enable)
1057 tdfx_outl(par, VIDPROCCFG, vidcfg | VIDCFG_HWCURSOR_ENABLE);
1058 else
1059 tdfx_outl(par, VIDPROCCFG, vidcfg & ~VIDCFG_HWCURSOR_ENABLE);
1060
1061 /*
1062 * If the cursor is not be changed this means either we want the
1063 * current cursor state (if enable is set) or we want to query what
1064 * we can do with the cursor (if enable is not set)
1065 */
1066 if (!cursor->set)
1067 return 0;
1068
1069 /* fix cursor color - XFree86 forgets to restore it properly */
1070 if (cursor->set & FB_CUR_SETCMAP) {
1071 struct fb_cmap cmap = info->cmap;
1072 u32 bg_idx = cursor->image.bg_color;
1073 u32 fg_idx = cursor->image.fg_color;
1074 unsigned long bg_color, fg_color;
1075
1076 fg_color = (((u32)cmap.red[fg_idx] & 0xff00) << 8) |
1077 (((u32)cmap.green[fg_idx] & 0xff00) << 0) |
1078 (((u32)cmap.blue[fg_idx] & 0xff00) >> 8);
1079 bg_color = (((u32)cmap.red[bg_idx] & 0xff00) << 8) |
1080 (((u32)cmap.green[bg_idx] & 0xff00) << 0) |
1081 (((u32)cmap.blue[bg_idx] & 0xff00) >> 8);
1082 banshee_make_room(par, 2);
1083 tdfx_outl(par, HWCURC0, bg_color);
1084 tdfx_outl(par, HWCURC1, fg_color);
1085 }
1086
1087 if (cursor->set & FB_CUR_SETPOS) {
1088 int x = cursor->image.dx;
1089 int y = cursor->image.dy - info->var.yoffset;
1090
1091 x += 63;
1092 y += 63;
1093 banshee_make_room(par, 1);
1094 tdfx_outl(par, HWCURLOC, (y << 16) + x);
1095 }
1096 if (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE)) {
1097 /*
1098 * Voodoo 3 and above cards use 2 monochrome cursor patterns.
1099 * The reason is so the card can fetch 8 words at a time
1100 * and are stored on chip for use for the next 8 scanlines.
1101 * This reduces the number of times for access to draw the
1102 * cursor for each screen refresh.
1103 * Each pattern is a bitmap of 64 bit wide and 64 bit high
1104 * (total of 8192 bits or 1024 bytes). The two patterns are
1105 * stored in such a way that pattern 0 always resides in the
1106 * lower half (least significant 64 bits) of a 128 bit word
1107 * and pattern 1 the upper half. If you examine the data of
1108 * the cursor image the graphics card uses then from the
1109 * beginning you see line one of pattern 0, line one of
1110 * pattern 1, line two of pattern 0, line two of pattern 1,
1111 * etc etc. The linear stride for the cursor is always 16 bytes
1112 * (128 bits) which is the maximum cursor width times two for
1113 * the two monochrome patterns.
1114 */
1115 u8 __iomem *cursorbase = info->screen_base + info->fix.smem_len;
1116 u8 *bitmap = (u8 *)cursor->image.data;
1117 u8 *mask = (u8 *)cursor->mask;
1118 int i;
1119
1120 fb_memset(cursorbase, 0, 1024);
1121
1122 for (i = 0; i < cursor->image.height; i++) {
1123 int h = 0;
1124 int j = (cursor->image.width + 7) >> 3;
1125
1126 for (; j > 0; j--) {
1127 u8 data = *mask ^ *bitmap;
1128 if (cursor->rop == ROP_COPY)
1129 data = *mask & *bitmap;
1130 /* Pattern 0. Copy the cursor mask to it */
1131 fb_writeb(*mask, cursorbase + h);
1132 mask++;
1133 /* Pattern 1. Copy the cursor bitmap to it */
1134 fb_writeb(data, cursorbase + h + 8);
1135 bitmap++;
1136 h++;
1137 }
1138 cursorbase += 16;
1139 }
1140 }
1141 return 0;
1142 }
1143
1144 static struct fb_ops tdfxfb_ops = {
1145 .owner = THIS_MODULE,
1146 .fb_check_var = tdfxfb_check_var,
1147 .fb_set_par = tdfxfb_set_par,
1148 .fb_setcolreg = tdfxfb_setcolreg,
1149 .fb_blank = tdfxfb_blank,
1150 .fb_pan_display = tdfxfb_pan_display,
1151 .fb_sync = banshee_wait_idle,
1152 .fb_cursor = tdfxfb_cursor,
1153 #ifdef CONFIG_FB_3DFX_ACCEL
1154 .fb_fillrect = tdfxfb_fillrect,
1155 .fb_copyarea = tdfxfb_copyarea,
1156 .fb_imageblit = tdfxfb_imageblit,
1157 #else
1158 .fb_fillrect = cfb_fillrect,
1159 .fb_copyarea = cfb_copyarea,
1160 .fb_imageblit = cfb_imageblit,
1161 #endif
1162 };
1163
1164 #ifdef CONFIG_FB_3DFX_I2C
1165 /* The voo GPIO registers don't have individual masks for each bit
1166 so we always have to read before writing. */
1167
1168 static void tdfxfb_i2c_setscl(void *data, int val)
1169 {
1170 struct tdfxfb_i2c_chan *chan = data;
1171 struct tdfx_par *par = chan->par;
1172 unsigned int r;
1173
1174 r = tdfx_inl(par, VIDSERPARPORT);
1175 if (val)
1176 r |= I2C_SCL_OUT;
1177 else
1178 r &= ~I2C_SCL_OUT;
1179 tdfx_outl(par, VIDSERPARPORT, r);
1180 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1181 }
1182
1183 static void tdfxfb_i2c_setsda(void *data, int val)
1184 {
1185 struct tdfxfb_i2c_chan *chan = data;
1186 struct tdfx_par *par = chan->par;
1187 unsigned int r;
1188
1189 r = tdfx_inl(par, VIDSERPARPORT);
1190 if (val)
1191 r |= I2C_SDA_OUT;
1192 else
1193 r &= ~I2C_SDA_OUT;
1194 tdfx_outl(par, VIDSERPARPORT, r);
1195 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1196 }
1197
1198 /* The GPIO pins are open drain, so the pins always remain outputs.
1199 We rely on the i2c-algo-bit routines to set the pins high before
1200 reading the input from other chips. */
1201
1202 static int tdfxfb_i2c_getscl(void *data)
1203 {
1204 struct tdfxfb_i2c_chan *chan = data;
1205 struct tdfx_par *par = chan->par;
1206
1207 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SCL_IN));
1208 }
1209
1210 static int tdfxfb_i2c_getsda(void *data)
1211 {
1212 struct tdfxfb_i2c_chan *chan = data;
1213 struct tdfx_par *par = chan->par;
1214
1215 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SDA_IN));
1216 }
1217
1218 static void tdfxfb_ddc_setscl(void *data, int val)
1219 {
1220 struct tdfxfb_i2c_chan *chan = data;
1221 struct tdfx_par *par = chan->par;
1222 unsigned int r;
1223
1224 r = tdfx_inl(par, VIDSERPARPORT);
1225 if (val)
1226 r |= DDC_SCL_OUT;
1227 else
1228 r &= ~DDC_SCL_OUT;
1229 tdfx_outl(par, VIDSERPARPORT, r);
1230 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1231 }
1232
1233 static void tdfxfb_ddc_setsda(void *data, int val)
1234 {
1235 struct tdfxfb_i2c_chan *chan = data;
1236 struct tdfx_par *par = chan->par;
1237 unsigned int r;
1238
1239 r = tdfx_inl(par, VIDSERPARPORT);
1240 if (val)
1241 r |= DDC_SDA_OUT;
1242 else
1243 r &= ~DDC_SDA_OUT;
1244 tdfx_outl(par, VIDSERPARPORT, r);
1245 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1246 }
1247
1248 static int tdfxfb_ddc_getscl(void *data)
1249 {
1250 struct tdfxfb_i2c_chan *chan = data;
1251 struct tdfx_par *par = chan->par;
1252
1253 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SCL_IN));
1254 }
1255
1256 static int tdfxfb_ddc_getsda(void *data)
1257 {
1258 struct tdfxfb_i2c_chan *chan = data;
1259 struct tdfx_par *par = chan->par;
1260
1261 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SDA_IN));
1262 }
1263
1264 static int tdfxfb_setup_ddc_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1265 struct device *dev)
1266 {
1267 int rc;
1268
1269 strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
1270 chan->adapter.owner = THIS_MODULE;
1271 chan->adapter.class = I2C_CLASS_DDC;
1272 chan->adapter.algo_data = &chan->algo;
1273 chan->adapter.dev.parent = dev;
1274 chan->algo.setsda = tdfxfb_ddc_setsda;
1275 chan->algo.setscl = tdfxfb_ddc_setscl;
1276 chan->algo.getsda = tdfxfb_ddc_getsda;
1277 chan->algo.getscl = tdfxfb_ddc_getscl;
1278 chan->algo.udelay = 10;
1279 chan->algo.timeout = msecs_to_jiffies(500);
1280 chan->algo.data = chan;
1281
1282 i2c_set_adapdata(&chan->adapter, chan);
1283
1284 rc = i2c_bit_add_bus(&chan->adapter);
1285 if (rc == 0)
1286 DPRINTK("I2C bus %s registered.\n", name);
1287 else
1288 chan->par = NULL;
1289
1290 return rc;
1291 }
1292
1293 static int tdfxfb_setup_i2c_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1294 struct device *dev)
1295 {
1296 int rc;
1297
1298 strlcpy(chan->adapter.name, name, sizeof(chan->adapter.name));
1299 chan->adapter.owner = THIS_MODULE;
1300 chan->adapter.algo_data = &chan->algo;
1301 chan->adapter.dev.parent = dev;
1302 chan->algo.setsda = tdfxfb_i2c_setsda;
1303 chan->algo.setscl = tdfxfb_i2c_setscl;
1304 chan->algo.getsda = tdfxfb_i2c_getsda;
1305 chan->algo.getscl = tdfxfb_i2c_getscl;
1306 chan->algo.udelay = 10;
1307 chan->algo.timeout = msecs_to_jiffies(500);
1308 chan->algo.data = chan;
1309
1310 i2c_set_adapdata(&chan->adapter, chan);
1311
1312 rc = i2c_bit_add_bus(&chan->adapter);
1313 if (rc == 0)
1314 DPRINTK("I2C bus %s registered.\n", name);
1315 else
1316 chan->par = NULL;
1317
1318 return rc;
1319 }
1320
1321 static void tdfxfb_create_i2c_busses(struct fb_info *info)
1322 {
1323 struct tdfx_par *par = info->par;
1324
1325 tdfx_outl(par, VIDINFORMAT, 0x8160);
1326 tdfx_outl(par, VIDSERPARPORT, 0xcffc0020);
1327
1328 par->chan[0].par = par;
1329 par->chan[1].par = par;
1330
1331 tdfxfb_setup_ddc_bus(&par->chan[0], "Voodoo3-DDC", info->dev);
1332 tdfxfb_setup_i2c_bus(&par->chan[1], "Voodoo3-I2C", info->dev);
1333 }
1334
1335 static void tdfxfb_delete_i2c_busses(struct tdfx_par *par)
1336 {
1337 if (par->chan[0].par)
1338 i2c_del_adapter(&par->chan[0].adapter);
1339 par->chan[0].par = NULL;
1340
1341 if (par->chan[1].par)
1342 i2c_del_adapter(&par->chan[1].adapter);
1343 par->chan[1].par = NULL;
1344 }
1345
1346 static int tdfxfb_probe_i2c_connector(struct tdfx_par *par,
1347 struct fb_monspecs *specs)
1348 {
1349 u8 *edid = NULL;
1350
1351 DPRINTK("Probe DDC Bus\n");
1352 if (par->chan[0].par)
1353 edid = fb_ddc_read(&par->chan[0].adapter);
1354
1355 if (edid) {
1356 fb_edid_to_monspecs(edid, specs);
1357 kfree(edid);
1358 return 0;
1359 }
1360 return 1;
1361 }
1362 #endif /* CONFIG_FB_3DFX_I2C */
1363
1364 /**
1365 * tdfxfb_probe - Device Initializiation
1366 *
1367 * @pdev: PCI Device to initialize
1368 * @id: PCI Device ID
1369 *
1370 * Initializes and allocates resources for PCI device @pdev.
1371 *
1372 */
1373 static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1374 {
1375 struct tdfx_par *default_par;
1376 struct fb_info *info;
1377 int err, lpitch;
1378 struct fb_monspecs *specs;
1379 bool found;
1380
1381 err = pci_enable_device(pdev);
1382 if (err) {
1383 printk(KERN_ERR "tdfxfb: Can't enable pdev: %d\n", err);
1384 return err;
1385 }
1386
1387 info = framebuffer_alloc(sizeof(struct tdfx_par), &pdev->dev);
1388
1389 if (!info)
1390 return -ENOMEM;
1391
1392 default_par = info->par;
1393 info->fix = tdfx_fix;
1394
1395 /* Configure the default fb_fix_screeninfo first */
1396 switch (pdev->device) {
1397 case PCI_DEVICE_ID_3DFX_BANSHEE:
1398 strcpy(info->fix.id, "3Dfx Banshee");
1399 default_par->max_pixclock = BANSHEE_MAX_PIXCLOCK;
1400 break;
1401 case PCI_DEVICE_ID_3DFX_VOODOO3:
1402 strcpy(info->fix.id, "3Dfx Voodoo3");
1403 default_par->max_pixclock = VOODOO3_MAX_PIXCLOCK;
1404 break;
1405 case PCI_DEVICE_ID_3DFX_VOODOO5:
1406 strcpy(info->fix.id, "3Dfx Voodoo5");
1407 default_par->max_pixclock = VOODOO5_MAX_PIXCLOCK;
1408 break;
1409 }
1410
1411 info->fix.mmio_start = pci_resource_start(pdev, 0);
1412 info->fix.mmio_len = pci_resource_len(pdev, 0);
1413 if (!request_mem_region(info->fix.mmio_start, info->fix.mmio_len,
1414 "tdfx regbase")) {
1415 printk(KERN_ERR "tdfxfb: Can't reserve regbase\n");
1416 goto out_err;
1417 }
1418
1419 default_par->regbase_virt =
1420 ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
1421 if (!default_par->regbase_virt) {
1422 printk(KERN_ERR "fb: Can't remap %s register area.\n",
1423 info->fix.id);
1424 goto out_err_regbase;
1425 }
1426
1427 info->fix.smem_start = pci_resource_start(pdev, 1);
1428 info->fix.smem_len = do_lfb_size(default_par, pdev->device);
1429 if (!info->fix.smem_len) {
1430 printk(KERN_ERR "fb: Can't count %s memory.\n", info->fix.id);
1431 goto out_err_regbase;
1432 }
1433
1434 if (!request_mem_region(info->fix.smem_start,
1435 pci_resource_len(pdev, 1), "tdfx smem")) {
1436 printk(KERN_ERR "tdfxfb: Can't reserve smem\n");
1437 goto out_err_regbase;
1438 }
1439
1440 info->screen_base = ioremap_wc(info->fix.smem_start,
1441 info->fix.smem_len);
1442 if (!info->screen_base) {
1443 printk(KERN_ERR "fb: Can't remap %s framebuffer.\n",
1444 info->fix.id);
1445 goto out_err_screenbase;
1446 }
1447
1448 default_par->iobase = pci_resource_start(pdev, 2);
1449
1450 if (!request_region(pci_resource_start(pdev, 2),
1451 pci_resource_len(pdev, 2), "tdfx iobase")) {
1452 printk(KERN_ERR "tdfxfb: Can't reserve iobase\n");
1453 goto out_err_screenbase;
1454 }
1455
1456 printk(KERN_INFO "fb: %s memory = %dK\n", info->fix.id,
1457 info->fix.smem_len >> 10);
1458
1459 if (!nomtrr)
1460 default_par->wc_cookie= arch_phys_wc_add(info->fix.smem_start,
1461 info->fix.smem_len);
1462
1463 info->fix.ypanstep = nopan ? 0 : 1;
1464 info->fix.ywrapstep = nowrap ? 0 : 1;
1465
1466 info->fbops = &tdfxfb_ops;
1467 info->pseudo_palette = default_par->palette;
1468 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1469 #ifdef CONFIG_FB_3DFX_ACCEL
1470 info->flags |= FBINFO_HWACCEL_FILLRECT |
1471 FBINFO_HWACCEL_COPYAREA |
1472 FBINFO_HWACCEL_IMAGEBLIT |
1473 FBINFO_READS_FAST;
1474 #endif
1475 /* reserve 8192 bits for cursor */
1476 /* the 2.4 driver says PAGE_MASK boundary is not enough for Voodoo4 */
1477 if (hwcursor)
1478 info->fix.smem_len = (info->fix.smem_len - 1024) &
1479 (PAGE_MASK << 1);
1480 specs = &info->monspecs;
1481 found = false;
1482 info->var.bits_per_pixel = 8;
1483 #ifdef CONFIG_FB_3DFX_I2C
1484 tdfxfb_create_i2c_busses(info);
1485 err = tdfxfb_probe_i2c_connector(default_par, specs);
1486
1487 if (!err) {
1488 if (specs->modedb == NULL)
1489 DPRINTK("Unable to get Mode Database\n");
1490 else {
1491 const struct fb_videomode *m;
1492
1493 fb_videomode_to_modelist(specs->modedb,
1494 specs->modedb_len,
1495 &info->modelist);
1496 m = fb_find_best_display(specs, &info->modelist);
1497 if (m) {
1498 fb_videomode_to_var(&info->var, m);
1499 /* fill all other info->var's fields */
1500 if (tdfxfb_check_var(&info->var, info) < 0)
1501 info->var = tdfx_var;
1502 else
1503 found = true;
1504 }
1505 }
1506 }
1507 #endif
1508 if (!mode_option && !found)
1509 mode_option = "640x480@60";
1510
1511 if (mode_option) {
1512 err = fb_find_mode(&info->var, info, mode_option,
1513 specs->modedb, specs->modedb_len,
1514 NULL, info->var.bits_per_pixel);
1515 if (!err || err == 4)
1516 info->var = tdfx_var;
1517 }
1518
1519 if (found) {
1520 fb_destroy_modedb(specs->modedb);
1521 specs->modedb = NULL;
1522 }
1523
1524 /* maximize virtual vertical length */
1525 lpitch = info->var.xres_virtual * ((info->var.bits_per_pixel + 7) >> 3);
1526 info->var.yres_virtual = info->fix.smem_len / lpitch;
1527 if (info->var.yres_virtual < info->var.yres)
1528 goto out_err_iobase;
1529
1530 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
1531 printk(KERN_ERR "tdfxfb: Can't allocate color map\n");
1532 goto out_err_iobase;
1533 }
1534
1535 if (register_framebuffer(info) < 0) {
1536 printk(KERN_ERR "tdfxfb: can't register framebuffer\n");
1537 fb_dealloc_cmap(&info->cmap);
1538 goto out_err_iobase;
1539 }
1540 /*
1541 * Our driver data
1542 */
1543 pci_set_drvdata(pdev, info);
1544 return 0;
1545
1546 out_err_iobase:
1547 #ifdef CONFIG_FB_3DFX_I2C
1548 tdfxfb_delete_i2c_busses(default_par);
1549 #endif
1550 arch_phys_wc_del(default_par->wc_cookie);
1551 release_region(pci_resource_start(pdev, 2),
1552 pci_resource_len(pdev, 2));
1553 out_err_screenbase:
1554 if (info->screen_base)
1555 iounmap(info->screen_base);
1556 release_mem_region(info->fix.smem_start, pci_resource_len(pdev, 1));
1557 out_err_regbase:
1558 /*
1559 * Cleanup after anything that was remapped/allocated.
1560 */
1561 if (default_par->regbase_virt)
1562 iounmap(default_par->regbase_virt);
1563 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1564 out_err:
1565 framebuffer_release(info);
1566 return -ENXIO;
1567 }
1568
1569 #ifndef MODULE
1570 static void __init tdfxfb_setup(char *options)
1571 {
1572 char *this_opt;
1573
1574 if (!options || !*options)
1575 return;
1576
1577 while ((this_opt = strsep(&options, ",")) != NULL) {
1578 if (!*this_opt)
1579 continue;
1580 if (!strcmp(this_opt, "nopan")) {
1581 nopan = 1;
1582 } else if (!strcmp(this_opt, "nowrap")) {
1583 nowrap = 1;
1584 } else if (!strncmp(this_opt, "hwcursor=", 9)) {
1585 hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
1586 } else if (!strncmp(this_opt, "nomtrr", 6)) {
1587 nomtrr = 1;
1588 } else {
1589 mode_option = this_opt;
1590 }
1591 }
1592 }
1593 #endif
1594
1595 /**
1596 * tdfxfb_remove - Device removal
1597 *
1598 * @pdev: PCI Device to cleanup
1599 *
1600 * Releases all resources allocated during the course of the driver's
1601 * lifetime for the PCI device @pdev.
1602 *
1603 */
1604 static void tdfxfb_remove(struct pci_dev *pdev)
1605 {
1606 struct fb_info *info = pci_get_drvdata(pdev);
1607 struct tdfx_par *par = info->par;
1608
1609 unregister_framebuffer(info);
1610 #ifdef CONFIG_FB_3DFX_I2C
1611 tdfxfb_delete_i2c_busses(par);
1612 #endif
1613 arch_phys_wc_del(par->wc_cookie);
1614 iounmap(par->regbase_virt);
1615 iounmap(info->screen_base);
1616
1617 /* Clean up after reserved regions */
1618 release_region(pci_resource_start(pdev, 2),
1619 pci_resource_len(pdev, 2));
1620 release_mem_region(pci_resource_start(pdev, 1),
1621 pci_resource_len(pdev, 1));
1622 release_mem_region(pci_resource_start(pdev, 0),
1623 pci_resource_len(pdev, 0));
1624 fb_dealloc_cmap(&info->cmap);
1625 framebuffer_release(info);
1626 }
1627
1628 static int __init tdfxfb_init(void)
1629 {
1630 #ifndef MODULE
1631 char *option = NULL;
1632
1633 if (fb_get_options("tdfxfb", &option))
1634 return -ENODEV;
1635
1636 tdfxfb_setup(option);
1637 #endif
1638 return pci_register_driver(&tdfxfb_driver);
1639 }
1640
1641 static void __exit tdfxfb_exit(void)
1642 {
1643 pci_unregister_driver(&tdfxfb_driver);
1644 }
1645
1646 MODULE_AUTHOR("Hannu Mallat <hmallat@cc.hut.fi>");
1647 MODULE_DESCRIPTION("3Dfx framebuffer device driver");
1648 MODULE_LICENSE("GPL");
1649
1650 module_param(hwcursor, int, 0644);
1651 MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1652 "(1=enable, 0=disable, default=1)");
1653 module_param(mode_option, charp, 0);
1654 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
1655 module_param(nomtrr, bool, 0);
1656 MODULE_PARM_DESC(nomtrr, "Disable MTRR support (default: enabled)");
1657
1658 module_init(tdfxfb_init);
1659 module_exit(tdfxfb_exit);
Ubuntu Jammy Linux kernel mirror