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/aperture.h>
68#include <linux/module.h>
69#include <linux/kernel.h>
70#include <linux/errno.h>
71#include <linux/string.h>
72#include <linux/mm.h>
73#include <linux/slab.h>
74#include <linux/fb.h>
75#include <linux/init.h>
76#include <linux/pci.h>
77#include <asm/io.h>
78
79#include <video/tdfx.h>
80
81#define DPRINTK(a, b...) pr_debug("fb: %s: " a, __func__ , ## b)
82
83#define BANSHEE_MAX_PIXCLOCK 270000
84#define VOODOO3_MAX_PIXCLOCK 300000
85#define VOODOO5_MAX_PIXCLOCK 350000
86
87static const struct fb_fix_screeninfo tdfx_fix = {
88 .type = FB_TYPE_PACKED_PIXELS,
89 .visual = FB_VISUAL_PSEUDOCOLOR,
90 .ypanstep = 1,
91 .ywrapstep = 1,
92 .accel = FB_ACCEL_3DFX_BANSHEE
93};
94
95static const struct fb_var_screeninfo tdfx_var = {
96 /* "640x480, 8 bpp @ 60 Hz */
97 .xres = 640,
98 .yres = 480,
99 .xres_virtual = 640,
100 .yres_virtual = 1024,
101 .bits_per_pixel = 8,
102 .red = {0, 8, 0},
103 .blue = {0, 8, 0},
104 .green = {0, 8, 0},
105 .activate = FB_ACTIVATE_NOW,
106 .height = -1,
107 .width = -1,
108 .accel_flags = FB_ACCELF_TEXT,
109 .pixclock = 39722,
110 .left_margin = 40,
111 .right_margin = 24,
112 .upper_margin = 32,
113 .lower_margin = 11,
114 .hsync_len = 96,
115 .vsync_len = 2,
116 .vmode = FB_VMODE_NONINTERLACED
117};
118
119/*
120 * PCI driver prototypes
121 */
122static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id);
123static void tdfxfb_remove(struct pci_dev *pdev);
124
125static const struct pci_device_id tdfxfb_id_table[] = {
126 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_BANSHEE,
127 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
128 0xff0000, 0 },
129 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO3,
130 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
131 0xff0000, 0 },
132 { PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO5,
133 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
134 0xff0000, 0 },
135 { 0, }
136};
137
138static struct pci_driver tdfxfb_driver = {
139 .name = "tdfxfb",
140 .id_table = tdfxfb_id_table,
141 .probe = tdfxfb_probe,
142 .remove = tdfxfb_remove,
143};
144
145MODULE_DEVICE_TABLE(pci, tdfxfb_id_table);
146
147/*
148 * Driver data
149 */
150static int nopan;
151static int nowrap = 1; /* not implemented (yet) */
152static int hwcursor = 1;
153static char *mode_option;
154static bool nomtrr;
155
156/* -------------------------------------------------------------------------
157 * Hardware-specific funcions
158 * ------------------------------------------------------------------------- */
159
160static inline u8 vga_inb(struct tdfx_par *par, u32 reg)
161{
162 return inb(port: par->iobase + reg - 0x300);
163}
164
165static inline void vga_outb(struct tdfx_par *par, u32 reg, u8 val)
166{
167 outb(value: val, port: par->iobase + reg - 0x300);
168}
169
170static inline void gra_outb(struct tdfx_par *par, u32 idx, u8 val)
171{
172 vga_outb(par, GRA_I, val: idx);
173 wmb();
174 vga_outb(par, GRA_D, val);
175 wmb();
176}
177
178static inline void seq_outb(struct tdfx_par *par, u32 idx, u8 val)
179{
180 vga_outb(par, SEQ_I, val: idx);
181 wmb();
182 vga_outb(par, SEQ_D, val);
183 wmb();
184}
185
186static inline u8 seq_inb(struct tdfx_par *par, u32 idx)
187{
188 vga_outb(par, SEQ_I, val: idx);
189 mb();
190 return vga_inb(par, SEQ_D);
191}
192
193static inline void crt_outb(struct tdfx_par *par, u32 idx, u8 val)
194{
195 vga_outb(par, CRT_I, val: idx);
196 wmb();
197 vga_outb(par, CRT_D, val);
198 wmb();
199}
200
201static inline u8 crt_inb(struct tdfx_par *par, u32 idx)
202{
203 vga_outb(par, CRT_I, val: idx);
204 mb();
205 return vga_inb(par, CRT_D);
206}
207
208static inline void att_outb(struct tdfx_par *par, u32 idx, u8 val)
209{
210 vga_inb(par, IS1_R);
211 vga_outb(par, ATT_IW, val: idx);
212 vga_outb(par, ATT_IW, val);
213}
214
215static inline void vga_disable_video(struct tdfx_par *par)
216{
217 unsigned char s;
218
219 s = seq_inb(par, idx: 0x01) | 0x20;
220 seq_outb(par, idx: 0x00, val: 0x01);
221 seq_outb(par, idx: 0x01, val: s);
222 seq_outb(par, idx: 0x00, val: 0x03);
223}
224
225static inline void vga_enable_video(struct tdfx_par *par)
226{
227 unsigned char s;
228
229 s = seq_inb(par, idx: 0x01) & 0xdf;
230 seq_outb(par, idx: 0x00, val: 0x01);
231 seq_outb(par, idx: 0x01, val: s);
232 seq_outb(par, idx: 0x00, val: 0x03);
233}
234
235static inline void vga_enable_palette(struct tdfx_par *par)
236{
237 vga_inb(par, IS1_R);
238 mb();
239 vga_outb(par, ATT_IW, val: 0x20);
240}
241
242static inline u32 tdfx_inl(struct tdfx_par *par, unsigned int reg)
243{
244 return readl(addr: par->regbase_virt + reg);
245}
246
247static inline void tdfx_outl(struct tdfx_par *par, unsigned int reg, u32 val)
248{
249 writel(val, addr: par->regbase_virt + reg);
250}
251
252static 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
260static 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, size: 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 */
279static inline void do_setpalentry(struct tdfx_par *par, unsigned regno, u32 c)
280{
281 banshee_make_room(par, size: 2);
282 tdfx_outl(par, DACADDR, val: regno);
283 /* read after write makes it working */
284 tdfx_inl(par, DACADDR);
285 tdfx_outl(par, DACDATA, val: c);
286}
287
288static 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
337static 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, val: tdfx_inl(par, MISCINIT1) | 0x01);
345
346 crt_outb(par, idx: 0x11, val: crt_inb(par, idx: 0x11) & 0x7f); /* CRT unprotect */
347
348 banshee_make_room(par, size: 3);
349 tdfx_outl(par, VGAINIT1, val: reg->vgainit1 & 0x001FFFFF);
350 tdfx_outl(par, VIDPROCCFG, val: 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, val: reg->vidpll);
356
357 vga_outb(par, MISC_W, val: reg->misc[0x00] | 0x01);
358
359 for (i = 0; i < 5; i++)
360 seq_outb(par, idx: i, val: reg->seq[i]);
361
362 for (i = 0; i < 25; i++)
363 crt_outb(par, idx: i, val: reg->crt[i]);
364
365 for (i = 0; i < 9; i++)
366 gra_outb(par, idx: i, val: reg->gra[i]);
367
368 for (i = 0; i < 21; i++)
369 att_outb(par, idx: i, val: reg->att[i]);
370
371 crt_outb(par, idx: 0x1a, val: reg->ext[0]);
372 crt_outb(par, idx: 0x1b, val: reg->ext[1]);
373
374 vga_enable_palette(par);
375 vga_enable_video(par);
376
377 banshee_make_room(par, size: 9);
378 tdfx_outl(par, VGAINIT0, val: reg->vgainit0);
379 tdfx_outl(par, DACMODE, val: reg->dacmode);
380 tdfx_outl(par, VIDDESKSTRIDE, val: reg->stride);
381 tdfx_outl(par, HWCURPATADDR, val: reg->curspataddr);
382
383 tdfx_outl(par, VIDSCREENSIZE, val: reg->screensize);
384 tdfx_outl(par, VIDDESKSTART, val: reg->startaddr);
385 tdfx_outl(par, VIDPROCCFG, val: reg->vidcfg);
386 tdfx_outl(par, VGAINIT1, val: reg->vgainit1);
387 tdfx_outl(par, MISCINIT0, val: reg->miscinit0);
388
389 banshee_make_room(par, size: 8);
390 tdfx_outl(par, SRCBASE, val: reg->startaddr);
391 tdfx_outl(par, DSTBASE, val: reg->startaddr);
392 tdfx_outl(par, COMMANDEXTRA_2D, val: 0);
393 tdfx_outl(par, CLIP0MIN, val: 0);
394 tdfx_outl(par, CLIP0MAX, val: 0x0fff0fff);
395 tdfx_outl(par, CLIP1MIN, val: 0);
396 tdfx_outl(par, CLIP1MAX, val: 0x0fff0fff);
397 tdfx_outl(par, SRCXY, val: 0);
398
399 banshee_wait_idle(info);
400}
401
402static 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, size: 1);
429 tdfx_outl(par, MISCINIT1, val: miscinit1);
430 return num_chips * chip_size * 1024l * 1024;
431}
432
433/* ------------------------------------------------------------------------- */
434
435static 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 fallthrough;
526 case 24:
527 var->red.offset = 16;
528 var->green.offset = 8;
529 var->blue.offset = 0;
530 var->red.length = var->green.length = var->blue.length = 8;
531 break;
532 }
533 var->width = -1;
534 var->height = -1;
535
536 var->accel_flags = FB_ACCELF_TEXT;
537
538 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
539 var->xres, var->yres, var->bits_per_pixel);
540 return 0;
541}
542
543static int tdfxfb_set_par(struct fb_info *info)
544{
545 struct tdfx_par *par = info->par;
546 u32 hdispend = info->var.xres;
547 u32 hsyncsta = hdispend + info->var.right_margin;
548 u32 hsyncend = hsyncsta + info->var.hsync_len;
549 u32 htotal = hsyncend + info->var.left_margin;
550 u32 hd, hs, he, ht, hbs, hbe;
551 u32 vd, vs, ve, vt, vbs, vbe;
552 struct banshee_reg reg;
553 int fout, freq;
554 u32 wd;
555 u32 cpp = (info->var.bits_per_pixel + 7) >> 3;
556
557 memset(&reg, 0, sizeof(reg));
558
559 reg.vidcfg = VIDCFG_VIDPROC_ENABLE | VIDCFG_DESK_ENABLE |
560 VIDCFG_CURS_X11 |
561 ((cpp - 1) << VIDCFG_PIXFMT_SHIFT) |
562 (cpp != 1 ? VIDCFG_CLUT_BYPASS : 0);
563
564 /* PLL settings */
565 freq = PICOS2KHZ(info->var.pixclock);
566
567 reg.vidcfg &= ~VIDCFG_2X;
568
569 if (freq > par->max_pixclock / 2) {
570 freq = freq > par->max_pixclock ? par->max_pixclock : freq;
571 reg.dacmode |= DACMODE_2X;
572 reg.vidcfg |= VIDCFG_2X;
573 hdispend >>= 1;
574 hsyncsta >>= 1;
575 hsyncend >>= 1;
576 htotal >>= 1;
577 }
578
579 wd = (hdispend >> 3) - 1;
580 hd = wd;
581 hs = (hsyncsta >> 3) - 1;
582 he = (hsyncend >> 3) - 1;
583 ht = (htotal >> 3) - 1;
584 hbs = hd;
585 hbe = ht;
586
587 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE) {
588 vd = (info->var.yres << 1) - 1;
589 vs = vd + (info->var.lower_margin << 1);
590 ve = vs + (info->var.vsync_len << 1);
591 vt = ve + (info->var.upper_margin << 1) - 1;
592 reg.screensize = info->var.xres | (info->var.yres << 13);
593 reg.vidcfg |= VIDCFG_HALF_MODE;
594 reg.crt[0x09] = 0x80;
595 } else {
596 vd = info->var.yres - 1;
597 vs = vd + info->var.lower_margin;
598 ve = vs + info->var.vsync_len;
599 vt = ve + info->var.upper_margin - 1;
600 reg.screensize = info->var.xres | (info->var.yres << 12);
601 reg.vidcfg &= ~VIDCFG_HALF_MODE;
602 }
603 vbs = vd;
604 vbe = vt;
605
606 /* this is all pretty standard VGA register stuffing */
607 reg.misc[0x00] = 0x0f |
608 (info->var.xres < 400 ? 0xa0 :
609 info->var.xres < 480 ? 0x60 :
610 info->var.xres < 768 ? 0xe0 : 0x20);
611
612 reg.gra[0x05] = 0x40;
613 reg.gra[0x06] = 0x05;
614 reg.gra[0x07] = 0x0f;
615 reg.gra[0x08] = 0xff;
616
617 reg.att[0x00] = 0x00;
618 reg.att[0x01] = 0x01;
619 reg.att[0x02] = 0x02;
620 reg.att[0x03] = 0x03;
621 reg.att[0x04] = 0x04;
622 reg.att[0x05] = 0x05;
623 reg.att[0x06] = 0x06;
624 reg.att[0x07] = 0x07;
625 reg.att[0x08] = 0x08;
626 reg.att[0x09] = 0x09;
627 reg.att[0x0a] = 0x0a;
628 reg.att[0x0b] = 0x0b;
629 reg.att[0x0c] = 0x0c;
630 reg.att[0x0d] = 0x0d;
631 reg.att[0x0e] = 0x0e;
632 reg.att[0x0f] = 0x0f;
633 reg.att[0x10] = 0x41;
634 reg.att[0x12] = 0x0f;
635
636 reg.seq[0x00] = 0x03;
637 reg.seq[0x01] = 0x01; /* fixme: clkdiv2? */
638 reg.seq[0x02] = 0x0f;
639 reg.seq[0x03] = 0x00;
640 reg.seq[0x04] = 0x0e;
641
642 reg.crt[0x00] = ht - 4;
643 reg.crt[0x01] = hd;
644 reg.crt[0x02] = hbs;
645 reg.crt[0x03] = 0x80 | (hbe & 0x1f);
646 reg.crt[0x04] = hs;
647 reg.crt[0x05] = ((hbe & 0x20) << 2) | (he & 0x1f);
648 reg.crt[0x06] = vt;
649 reg.crt[0x07] = ((vs & 0x200) >> 2) |
650 ((vd & 0x200) >> 3) |
651 ((vt & 0x200) >> 4) | 0x10 |
652 ((vbs & 0x100) >> 5) |
653 ((vs & 0x100) >> 6) |
654 ((vd & 0x100) >> 7) |
655 ((vt & 0x100) >> 8);
656 reg.crt[0x09] |= 0x40 | ((vbs & 0x200) >> 4);
657 reg.crt[0x10] = vs;
658 reg.crt[0x11] = (ve & 0x0f) | 0x20;
659 reg.crt[0x12] = vd;
660 reg.crt[0x13] = wd;
661 reg.crt[0x15] = vbs;
662 reg.crt[0x16] = vbe + 1;
663 reg.crt[0x17] = 0xc3;
664 reg.crt[0x18] = 0xff;
665
666 /* Banshee's nonvga stuff */
667 reg.ext[0x00] = (((ht & 0x100) >> 8) |
668 ((hd & 0x100) >> 6) |
669 ((hbs & 0x100) >> 4) |
670 ((hbe & 0x40) >> 1) |
671 ((hs & 0x100) >> 2) |
672 ((he & 0x20) << 2));
673 reg.ext[0x01] = (((vt & 0x400) >> 10) |
674 ((vd & 0x400) >> 8) |
675 ((vbs & 0x400) >> 6) |
676 ((vbe & 0x400) >> 4));
677
678 reg.vgainit0 = VGAINIT0_8BIT_DAC |
679 VGAINIT0_EXT_ENABLE |
680 VGAINIT0_WAKEUP_3C3 |
681 VGAINIT0_ALT_READBACK |
682 VGAINIT0_EXTSHIFTOUT;
683 reg.vgainit1 = tdfx_inl(par, VGAINIT1) & 0x1fffff;
684
685 if (hwcursor)
686 reg.curspataddr = info->fix.smem_len;
687
688 reg.cursloc = 0;
689
690 reg.cursc0 = 0;
691 reg.cursc1 = 0xffffff;
692
693 reg.stride = info->var.xres * cpp;
694 reg.startaddr = info->var.yoffset * reg.stride
695 + info->var.xoffset * cpp;
696
697 reg.vidpll = do_calc_pll(freq, freq_out: &fout);
698#if 0
699 reg.mempll = do_calc_pll(..., &fout);
700 reg.gfxpll = do_calc_pll(..., &fout);
701#endif
702
703 if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED)
704 reg.vidcfg |= VIDCFG_INTERLACE;
705 reg.miscinit0 = tdfx_inl(par, MISCINIT0);
706
707#if defined(__BIG_ENDIAN)
708 switch (info->var.bits_per_pixel) {
709 case 8:
710 case 24:
711 reg.miscinit0 &= ~(1 << 30);
712 reg.miscinit0 &= ~(1 << 31);
713 break;
714 case 16:
715 reg.miscinit0 |= (1 << 30);
716 reg.miscinit0 |= (1 << 31);
717 break;
718 case 32:
719 reg.miscinit0 |= (1 << 30);
720 reg.miscinit0 &= ~(1 << 31);
721 break;
722 }
723#endif
724 do_write_regs(info, reg: &reg);
725
726 /* Now change fb_fix_screeninfo according to changes in par */
727 info->fix.line_length = reg.stride;
728 info->fix.visual = (info->var.bits_per_pixel == 8)
729 ? FB_VISUAL_PSEUDOCOLOR
730 : FB_VISUAL_TRUECOLOR;
731 DPRINTK("Graphics mode is now set at %dx%d depth %d\n",
732 info->var.xres, info->var.yres, info->var.bits_per_pixel);
733 return 0;
734}
735
736/* A handy macro shamelessly pinched from matroxfb */
737#define CNVT_TOHW(val, width) ((((val) << (width)) + 0x7FFF - (val)) >> 16)
738
739static int tdfxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
740 unsigned blue, unsigned transp,
741 struct fb_info *info)
742{
743 struct tdfx_par *par = info->par;
744 u32 rgbcol;
745
746 if (regno >= info->cmap.len || regno > 255)
747 return 1;
748
749 /* grayscale works only partially under directcolor */
750 if (info->var.grayscale) {
751 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
752 blue = (red * 77 + green * 151 + blue * 28) >> 8;
753 green = blue;
754 red = blue;
755 }
756
757 switch (info->fix.visual) {
758 case FB_VISUAL_PSEUDOCOLOR:
759 rgbcol = (((u32)red & 0xff00) << 8) |
760 (((u32)green & 0xff00) << 0) |
761 (((u32)blue & 0xff00) >> 8);
762 do_setpalentry(par, regno, c: rgbcol);
763 break;
764 /* Truecolor has no hardware color palettes. */
765 case FB_VISUAL_TRUECOLOR:
766 if (regno < 16) {
767 rgbcol = (CNVT_TOHW(red, info->var.red.length) <<
768 info->var.red.offset) |
769 (CNVT_TOHW(green, info->var.green.length) <<
770 info->var.green.offset) |
771 (CNVT_TOHW(blue, info->var.blue.length) <<
772 info->var.blue.offset) |
773 (CNVT_TOHW(transp, info->var.transp.length) <<
774 info->var.transp.offset);
775 par->palette[regno] = rgbcol;
776 }
777
778 break;
779 default:
780 DPRINTK("bad depth %u\n", info->var.bits_per_pixel);
781 break;
782 }
783
784 return 0;
785}
786
787/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
788static int tdfxfb_blank(int blank, struct fb_info *info)
789{
790 struct tdfx_par *par = info->par;
791 int vgablank = 1;
792 u32 dacmode = tdfx_inl(par, DACMODE);
793
794 dacmode &= ~(BIT(1) | BIT(3));
795
796 switch (blank) {
797 case FB_BLANK_UNBLANK: /* Screen: On; HSync: On, VSync: On */
798 vgablank = 0;
799 break;
800 case FB_BLANK_NORMAL: /* Screen: Off; HSync: On, VSync: On */
801 break;
802 case FB_BLANK_VSYNC_SUSPEND: /* Screen: Off; HSync: On, VSync: Off */
803 dacmode |= BIT(3);
804 break;
805 case FB_BLANK_HSYNC_SUSPEND: /* Screen: Off; HSync: Off, VSync: On */
806 dacmode |= BIT(1);
807 break;
808 case FB_BLANK_POWERDOWN: /* Screen: Off; HSync: Off, VSync: Off */
809 dacmode |= BIT(1) | BIT(3);
810 break;
811 }
812
813 banshee_make_room(par, size: 1);
814 tdfx_outl(par, DACMODE, val: dacmode);
815 if (vgablank)
816 vga_disable_video(par);
817 else
818 vga_enable_video(par);
819 return 0;
820}
821
822/*
823 * Set the starting position of the visible screen to var->yoffset
824 */
825static int tdfxfb_pan_display(struct fb_var_screeninfo *var,
826 struct fb_info *info)
827{
828 struct tdfx_par *par = info->par;
829 u32 addr = var->yoffset * info->fix.line_length;
830
831 if (nopan || var->xoffset)
832 return -EINVAL;
833
834 banshee_make_room(par, size: 1);
835 tdfx_outl(par, VIDDESKSTART, val: addr);
836
837 return 0;
838}
839
840#ifdef CONFIG_FB_3DFX_ACCEL
841/*
842 * FillRect 2D command (solidfill or invert (via ROP_XOR))
843 */
844static void tdfxfb_fillrect(struct fb_info *info,
845 const struct fb_fillrect *rect)
846{
847 struct tdfx_par *par = info->par;
848 u32 bpp = info->var.bits_per_pixel;
849 u32 stride = info->fix.line_length;
850 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
851 int tdfx_rop;
852 u32 dx = rect->dx;
853 u32 dy = rect->dy;
854 u32 dstbase = 0;
855
856 if (rect->rop == ROP_COPY)
857 tdfx_rop = TDFX_ROP_COPY;
858 else
859 tdfx_rop = TDFX_ROP_XOR;
860
861 /* assume always rect->height < 4096 */
862 if (dy + rect->height > 4095) {
863 dstbase = stride * dy;
864 dy = 0;
865 }
866 /* assume always rect->width < 4096 */
867 if (dx + rect->width > 4095) {
868 dstbase += dx * bpp >> 3;
869 dx = 0;
870 }
871 banshee_make_room(par, size: 6);
872 tdfx_outl(par, DSTFORMAT, val: fmt);
873 if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
874 tdfx_outl(par, COLORFORE, val: rect->color);
875 } else { /* FB_VISUAL_TRUECOLOR */
876 tdfx_outl(par, COLORFORE, val: par->palette[rect->color]);
877 }
878 tdfx_outl(par, COMMAND_2D, COMMAND_2D_FILLRECT | (tdfx_rop << 24));
879 tdfx_outl(par, DSTBASE, val: dstbase);
880 tdfx_outl(par, DSTSIZE, val: rect->width | (rect->height << 16));
881 tdfx_outl(par, LAUNCH_2D, val: dx | (dy << 16));
882}
883
884/*
885 * Screen-to-Screen BitBlt 2D command (for the bmove fb op.)
886 */
887static void tdfxfb_copyarea(struct fb_info *info,
888 const struct fb_copyarea *area)
889{
890 struct tdfx_par *par = info->par;
891 u32 sx = area->sx, sy = area->sy, dx = area->dx, dy = area->dy;
892 u32 bpp = info->var.bits_per_pixel;
893 u32 stride = info->fix.line_length;
894 u32 blitcmd = COMMAND_2D_S2S_BITBLT | (TDFX_ROP_COPY << 24);
895 u32 fmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
896 u32 dstbase = 0;
897 u32 srcbase = 0;
898
899 /* assume always area->height < 4096 */
900 if (sy + area->height > 4095) {
901 srcbase = stride * sy;
902 sy = 0;
903 }
904 /* assume always area->width < 4096 */
905 if (sx + area->width > 4095) {
906 srcbase += sx * bpp >> 3;
907 sx = 0;
908 }
909 /* assume always area->height < 4096 */
910 if (dy + area->height > 4095) {
911 dstbase = stride * dy;
912 dy = 0;
913 }
914 /* assume always area->width < 4096 */
915 if (dx + area->width > 4095) {
916 dstbase += dx * bpp >> 3;
917 dx = 0;
918 }
919
920 if (area->sx <= area->dx) {
921 /* -X */
922 blitcmd |= BIT(14);
923 sx += area->width - 1;
924 dx += area->width - 1;
925 }
926 if (area->sy <= area->dy) {
927 /* -Y */
928 blitcmd |= BIT(15);
929 sy += area->height - 1;
930 dy += area->height - 1;
931 }
932
933 banshee_make_room(par, size: 8);
934
935 tdfx_outl(par, SRCFORMAT, val: fmt);
936 tdfx_outl(par, DSTFORMAT, val: fmt);
937 tdfx_outl(par, COMMAND_2D, val: blitcmd);
938 tdfx_outl(par, DSTSIZE, val: area->width | (area->height << 16));
939 tdfx_outl(par, DSTXY, val: dx | (dy << 16));
940 tdfx_outl(par, SRCBASE, val: srcbase);
941 tdfx_outl(par, DSTBASE, val: dstbase);
942 tdfx_outl(par, LAUNCH_2D, val: sx | (sy << 16));
943}
944
945static void tdfxfb_imageblit(struct fb_info *info, const struct fb_image *image)
946{
947 struct tdfx_par *par = info->par;
948 int size = image->height * ((image->width * image->depth + 7) >> 3);
949 int fifo_free;
950 int i, stride = info->fix.line_length;
951 u32 bpp = info->var.bits_per_pixel;
952 u32 dstfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13);
953 u8 *chardata = (u8 *) image->data;
954 u32 srcfmt;
955 u32 dx = image->dx;
956 u32 dy = image->dy;
957 u32 dstbase = 0;
958
959 if (image->depth != 1) {
960#ifdef BROKEN_CODE
961 banshee_make_room(par, 6 + ((size + 3) >> 2));
962 srcfmt = stride | ((bpp + ((bpp == 8) ? 0 : 8)) << 13) |
963 0x400000;
964#else
965 cfb_imageblit(info, image);
966#endif
967 return;
968 }
969 banshee_make_room(par, size: 9);
970 switch (info->fix.visual) {
971 case FB_VISUAL_PSEUDOCOLOR:
972 tdfx_outl(par, COLORFORE, val: image->fg_color);
973 tdfx_outl(par, COLORBACK, val: image->bg_color);
974 break;
975 case FB_VISUAL_TRUECOLOR:
976 default:
977 tdfx_outl(par, COLORFORE,
978 val: par->palette[image->fg_color]);
979 tdfx_outl(par, COLORBACK,
980 val: par->palette[image->bg_color]);
981 }
982#ifdef __BIG_ENDIAN
983 srcfmt = 0x400000 | BIT(20);
984#else
985 srcfmt = 0x400000;
986#endif
987 /* assume always image->height < 4096 */
988 if (dy + image->height > 4095) {
989 dstbase = stride * dy;
990 dy = 0;
991 }
992 /* assume always image->width < 4096 */
993 if (dx + image->width > 4095) {
994 dstbase += dx * bpp >> 3;
995 dx = 0;
996 }
997
998 tdfx_outl(par, DSTBASE, val: dstbase);
999 tdfx_outl(par, SRCXY, val: 0);
1000 tdfx_outl(par, DSTXY, val: dx | (dy << 16));
1001 tdfx_outl(par, COMMAND_2D,
1002 COMMAND_2D_H2S_BITBLT | (TDFX_ROP_COPY << 24));
1003 tdfx_outl(par, SRCFORMAT, val: srcfmt);
1004 tdfx_outl(par, DSTFORMAT, val: dstfmt);
1005 tdfx_outl(par, DSTSIZE, val: image->width | (image->height << 16));
1006
1007 /* A count of how many free FIFO entries we've requested.
1008 * When this goes negative, we need to request more. */
1009 fifo_free = 0;
1010
1011 /* Send four bytes at a time of data */
1012 for (i = (size >> 2); i > 0; i--) {
1013 if (--fifo_free < 0) {
1014 fifo_free = 31;
1015 banshee_make_room(par, size: fifo_free);
1016 }
1017 tdfx_outl(par, LAUNCH_2D, val: *(u32 *)chardata);
1018 chardata += 4;
1019 }
1020
1021 /* Send the leftovers now */
1022 banshee_make_room(par, size: 3);
1023 switch (size % 4) {
1024 case 0:
1025 break;
1026 case 1:
1027 tdfx_outl(par, LAUNCH_2D, val: *chardata);
1028 break;
1029 case 2:
1030 tdfx_outl(par, LAUNCH_2D, val: *(u16 *)chardata);
1031 break;
1032 case 3:
1033 tdfx_outl(par, LAUNCH_2D,
1034 val: *(u16 *)chardata | (chardata[3] << 24));
1035 break;
1036 }
1037}
1038#endif /* CONFIG_FB_3DFX_ACCEL */
1039
1040static int tdfxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1041{
1042 struct tdfx_par *par = info->par;
1043 u32 vidcfg;
1044
1045 if (!hwcursor)
1046 return -EINVAL; /* just to force soft_cursor() call */
1047
1048 /* Too large of a cursor or wrong bpp :-( */
1049 if (cursor->image.width > 64 ||
1050 cursor->image.height > 64 ||
1051 cursor->image.depth > 1)
1052 return -EINVAL;
1053
1054 vidcfg = tdfx_inl(par, VIDPROCCFG);
1055 if (cursor->enable)
1056 tdfx_outl(par, VIDPROCCFG, val: vidcfg | VIDCFG_HWCURSOR_ENABLE);
1057 else
1058 tdfx_outl(par, VIDPROCCFG, val: vidcfg & ~VIDCFG_HWCURSOR_ENABLE);
1059
1060 /*
1061 * If the cursor is not be changed this means either we want the
1062 * current cursor state (if enable is set) or we want to query what
1063 * we can do with the cursor (if enable is not set)
1064 */
1065 if (!cursor->set)
1066 return 0;
1067
1068 /* fix cursor color - XFree86 forgets to restore it properly */
1069 if (cursor->set & FB_CUR_SETCMAP) {
1070 struct fb_cmap cmap = info->cmap;
1071 u32 bg_idx = cursor->image.bg_color;
1072 u32 fg_idx = cursor->image.fg_color;
1073 unsigned long bg_color, fg_color;
1074
1075 fg_color = (((u32)cmap.red[fg_idx] & 0xff00) << 8) |
1076 (((u32)cmap.green[fg_idx] & 0xff00) << 0) |
1077 (((u32)cmap.blue[fg_idx] & 0xff00) >> 8);
1078 bg_color = (((u32)cmap.red[bg_idx] & 0xff00) << 8) |
1079 (((u32)cmap.green[bg_idx] & 0xff00) << 0) |
1080 (((u32)cmap.blue[bg_idx] & 0xff00) >> 8);
1081 banshee_make_room(par, size: 2);
1082 tdfx_outl(par, HWCURC0, val: bg_color);
1083 tdfx_outl(par, HWCURC1, val: fg_color);
1084 }
1085
1086 if (cursor->set & FB_CUR_SETPOS) {
1087 int x = cursor->image.dx;
1088 int y = cursor->image.dy - info->var.yoffset;
1089
1090 x += 63;
1091 y += 63;
1092 banshee_make_room(par, size: 1);
1093 tdfx_outl(par, HWCURLOC, val: (y << 16) + x);
1094 }
1095 if (cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE)) {
1096 /*
1097 * Voodoo 3 and above cards use 2 monochrome cursor patterns.
1098 * The reason is so the card can fetch 8 words at a time
1099 * and are stored on chip for use for the next 8 scanlines.
1100 * This reduces the number of times for access to draw the
1101 * cursor for each screen refresh.
1102 * Each pattern is a bitmap of 64 bit wide and 64 bit high
1103 * (total of 8192 bits or 1024 bytes). The two patterns are
1104 * stored in such a way that pattern 0 always resides in the
1105 * lower half (least significant 64 bits) of a 128 bit word
1106 * and pattern 1 the upper half. If you examine the data of
1107 * the cursor image the graphics card uses then from the
1108 * beginning you see line one of pattern 0, line one of
1109 * pattern 1, line two of pattern 0, line two of pattern 1,
1110 * etc etc. The linear stride for the cursor is always 16 bytes
1111 * (128 bits) which is the maximum cursor width times two for
1112 * the two monochrome patterns.
1113 */
1114 u8 __iomem *cursorbase = info->screen_base + info->fix.smem_len;
1115 u8 *bitmap = (u8 *)cursor->image.data;
1116 u8 *mask = (u8 *)cursor->mask;
1117 int i;
1118
1119 fb_memset_io(addr: cursorbase, c: 0, n: 1024);
1120
1121 for (i = 0; i < cursor->image.height; i++) {
1122 int h = 0;
1123 int j = (cursor->image.width + 7) >> 3;
1124
1125 for (; j > 0; j--) {
1126 u8 data = *mask ^ *bitmap;
1127 if (cursor->rop == ROP_COPY)
1128 data = *mask & *bitmap;
1129 /* Pattern 0. Copy the cursor mask to it */
1130 fb_writeb(b: *mask, addr: cursorbase + h);
1131 mask++;
1132 /* Pattern 1. Copy the cursor bitmap to it */
1133 fb_writeb(b: data, addr: cursorbase + h + 8);
1134 bitmap++;
1135 h++;
1136 }
1137 cursorbase += 16;
1138 }
1139 }
1140 return 0;
1141}
1142
1143static const struct fb_ops tdfxfb_ops = {
1144 .owner = THIS_MODULE,
1145 __FB_DEFAULT_IOMEM_OPS_RDWR,
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_DEFAULT_IOMEM_OPS_DRAW,
1159#endif
1160 __FB_DEFAULT_IOMEM_OPS_MMAP,
1161};
1162
1163#ifdef CONFIG_FB_3DFX_I2C
1164/* The voo GPIO registers don't have individual masks for each bit
1165 so we always have to read before writing. */
1166
1167static void tdfxfb_i2c_setscl(void *data, int val)
1168{
1169 struct tdfxfb_i2c_chan *chan = data;
1170 struct tdfx_par *par = chan->par;
1171 unsigned int r;
1172
1173 r = tdfx_inl(par, VIDSERPARPORT);
1174 if (val)
1175 r |= I2C_SCL_OUT;
1176 else
1177 r &= ~I2C_SCL_OUT;
1178 tdfx_outl(par, VIDSERPARPORT, val: r);
1179 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1180}
1181
1182static void tdfxfb_i2c_setsda(void *data, int val)
1183{
1184 struct tdfxfb_i2c_chan *chan = data;
1185 struct tdfx_par *par = chan->par;
1186 unsigned int r;
1187
1188 r = tdfx_inl(par, VIDSERPARPORT);
1189 if (val)
1190 r |= I2C_SDA_OUT;
1191 else
1192 r &= ~I2C_SDA_OUT;
1193 tdfx_outl(par, VIDSERPARPORT, val: r);
1194 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1195}
1196
1197/* The GPIO pins are open drain, so the pins always remain outputs.
1198 We rely on the i2c-algo-bit routines to set the pins high before
1199 reading the input from other chips. */
1200
1201static int tdfxfb_i2c_getscl(void *data)
1202{
1203 struct tdfxfb_i2c_chan *chan = data;
1204 struct tdfx_par *par = chan->par;
1205
1206 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SCL_IN));
1207}
1208
1209static int tdfxfb_i2c_getsda(void *data)
1210{
1211 struct tdfxfb_i2c_chan *chan = data;
1212 struct tdfx_par *par = chan->par;
1213
1214 return (0 != (tdfx_inl(par, VIDSERPARPORT) & I2C_SDA_IN));
1215}
1216
1217static void tdfxfb_ddc_setscl(void *data, int val)
1218{
1219 struct tdfxfb_i2c_chan *chan = data;
1220 struct tdfx_par *par = chan->par;
1221 unsigned int r;
1222
1223 r = tdfx_inl(par, VIDSERPARPORT);
1224 if (val)
1225 r |= DDC_SCL_OUT;
1226 else
1227 r &= ~DDC_SCL_OUT;
1228 tdfx_outl(par, VIDSERPARPORT, val: r);
1229 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1230}
1231
1232static void tdfxfb_ddc_setsda(void *data, int val)
1233{
1234 struct tdfxfb_i2c_chan *chan = data;
1235 struct tdfx_par *par = chan->par;
1236 unsigned int r;
1237
1238 r = tdfx_inl(par, VIDSERPARPORT);
1239 if (val)
1240 r |= DDC_SDA_OUT;
1241 else
1242 r &= ~DDC_SDA_OUT;
1243 tdfx_outl(par, VIDSERPARPORT, val: r);
1244 tdfx_inl(par, VIDSERPARPORT); /* flush posted write */
1245}
1246
1247static int tdfxfb_ddc_getscl(void *data)
1248{
1249 struct tdfxfb_i2c_chan *chan = data;
1250 struct tdfx_par *par = chan->par;
1251
1252 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SCL_IN));
1253}
1254
1255static int tdfxfb_ddc_getsda(void *data)
1256{
1257 struct tdfxfb_i2c_chan *chan = data;
1258 struct tdfx_par *par = chan->par;
1259
1260 return (0 != (tdfx_inl(par, VIDSERPARPORT) & DDC_SDA_IN));
1261}
1262
1263static int tdfxfb_setup_ddc_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1264 struct device *dev)
1265{
1266 int rc;
1267
1268 strscpy(p: chan->adapter.name, q: name, size: sizeof(chan->adapter.name));
1269 chan->adapter.owner = THIS_MODULE;
1270 chan->adapter.class = I2C_CLASS_DDC;
1271 chan->adapter.algo_data = &chan->algo;
1272 chan->adapter.dev.parent = dev;
1273 chan->algo.setsda = tdfxfb_ddc_setsda;
1274 chan->algo.setscl = tdfxfb_ddc_setscl;
1275 chan->algo.getsda = tdfxfb_ddc_getsda;
1276 chan->algo.getscl = tdfxfb_ddc_getscl;
1277 chan->algo.udelay = 10;
1278 chan->algo.timeout = msecs_to_jiffies(m: 500);
1279 chan->algo.data = chan;
1280
1281 i2c_set_adapdata(adap: &chan->adapter, data: chan);
1282
1283 rc = i2c_bit_add_bus(&chan->adapter);
1284 if (rc == 0)
1285 DPRINTK("I2C bus %s registered.\n", name);
1286 else
1287 chan->par = NULL;
1288
1289 return rc;
1290}
1291
1292static int tdfxfb_setup_i2c_bus(struct tdfxfb_i2c_chan *chan, const char *name,
1293 struct device *dev)
1294{
1295 int rc;
1296
1297 strscpy(p: chan->adapter.name, q: name, size: sizeof(chan->adapter.name));
1298 chan->adapter.owner = THIS_MODULE;
1299 chan->adapter.algo_data = &chan->algo;
1300 chan->adapter.dev.parent = dev;
1301 chan->algo.setsda = tdfxfb_i2c_setsda;
1302 chan->algo.setscl = tdfxfb_i2c_setscl;
1303 chan->algo.getsda = tdfxfb_i2c_getsda;
1304 chan->algo.getscl = tdfxfb_i2c_getscl;
1305 chan->algo.udelay = 10;
1306 chan->algo.timeout = msecs_to_jiffies(m: 500);
1307 chan->algo.data = chan;
1308
1309 i2c_set_adapdata(adap: &chan->adapter, data: chan);
1310
1311 rc = i2c_bit_add_bus(&chan->adapter);
1312 if (rc == 0)
1313 DPRINTK("I2C bus %s registered.\n", name);
1314 else
1315 chan->par = NULL;
1316
1317 return rc;
1318}
1319
1320static void tdfxfb_create_i2c_busses(struct fb_info *info)
1321{
1322 struct tdfx_par *par = info->par;
1323
1324 tdfx_outl(par, VIDINFORMAT, val: 0x8160);
1325 tdfx_outl(par, VIDSERPARPORT, val: 0xcffc0020);
1326
1327 par->chan[0].par = par;
1328 par->chan[1].par = par;
1329
1330 tdfxfb_setup_ddc_bus(chan: &par->chan[0], name: "Voodoo3-DDC", dev: info->device);
1331 tdfxfb_setup_i2c_bus(chan: &par->chan[1], name: "Voodoo3-I2C", dev: info->device);
1332}
1333
1334static void tdfxfb_delete_i2c_busses(struct tdfx_par *par)
1335{
1336 if (par->chan[0].par)
1337 i2c_del_adapter(adap: &par->chan[0].adapter);
1338 par->chan[0].par = NULL;
1339
1340 if (par->chan[1].par)
1341 i2c_del_adapter(adap: &par->chan[1].adapter);
1342 par->chan[1].par = NULL;
1343}
1344
1345static int tdfxfb_probe_i2c_connector(struct tdfx_par *par,
1346 struct fb_monspecs *specs)
1347{
1348 u8 *edid = NULL;
1349
1350 DPRINTK("Probe DDC Bus\n");
1351 if (par->chan[0].par)
1352 edid = fb_ddc_read(adapter: &par->chan[0].adapter);
1353
1354 if (edid) {
1355 fb_edid_to_monspecs(edid, specs);
1356 kfree(objp: edid);
1357 return 0;
1358 }
1359 return 1;
1360}
1361#endif /* CONFIG_FB_3DFX_I2C */
1362
1363/**
1364 * tdfxfb_probe - Device Initializiation
1365 *
1366 * @pdev: PCI Device to initialize
1367 * @id: PCI Device ID
1368 *
1369 * Initializes and allocates resources for PCI device @pdev.
1370 *
1371 */
1372static int tdfxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1373{
1374 struct tdfx_par *default_par;
1375 struct fb_info *info;
1376 int err, lpitch;
1377 struct fb_monspecs *specs;
1378 bool found;
1379
1380 err = aperture_remove_conflicting_pci_devices(pdev, name: "tdfxfb");
1381 if (err)
1382 return err;
1383
1384 err = pci_enable_device(dev: pdev);
1385 if (err) {
1386 printk(KERN_ERR "tdfxfb: Can't enable pdev: %d\n", err);
1387 return err;
1388 }
1389
1390 info = framebuffer_alloc(size: sizeof(struct tdfx_par), dev: &pdev->dev);
1391
1392 if (!info)
1393 return -ENOMEM;
1394
1395 default_par = info->par;
1396 info->fix = tdfx_fix;
1397
1398 /* Configure the default fb_fix_screeninfo first */
1399 switch (pdev->device) {
1400 case PCI_DEVICE_ID_3DFX_BANSHEE:
1401 strcpy(p: info->fix.id, q: "3Dfx Banshee");
1402 default_par->max_pixclock = BANSHEE_MAX_PIXCLOCK;
1403 break;
1404 case PCI_DEVICE_ID_3DFX_VOODOO3:
1405 strcpy(p: info->fix.id, q: "3Dfx Voodoo3");
1406 default_par->max_pixclock = VOODOO3_MAX_PIXCLOCK;
1407 break;
1408 case PCI_DEVICE_ID_3DFX_VOODOO5:
1409 strcpy(p: info->fix.id, q: "3Dfx Voodoo5");
1410 default_par->max_pixclock = VOODOO5_MAX_PIXCLOCK;
1411 break;
1412 }
1413
1414 info->fix.mmio_start = pci_resource_start(pdev, 0);
1415 info->fix.mmio_len = pci_resource_len(pdev, 0);
1416 if (!request_mem_region(info->fix.mmio_start, info->fix.mmio_len,
1417 "tdfx regbase")) {
1418 printk(KERN_ERR "tdfxfb: Can't reserve regbase\n");
1419 goto out_err;
1420 }
1421
1422 default_par->regbase_virt =
1423 ioremap(offset: info->fix.mmio_start, size: info->fix.mmio_len);
1424 if (!default_par->regbase_virt) {
1425 printk(KERN_ERR "fb: Can't remap %s register area.\n",
1426 info->fix.id);
1427 goto out_err_regbase;
1428 }
1429
1430 info->fix.smem_start = pci_resource_start(pdev, 1);
1431 info->fix.smem_len = do_lfb_size(par: default_par, dev_id: pdev->device);
1432 if (!info->fix.smem_len) {
1433 printk(KERN_ERR "fb: Can't count %s memory.\n", info->fix.id);
1434 goto out_err_regbase;
1435 }
1436
1437 if (!request_mem_region(info->fix.smem_start,
1438 pci_resource_len(pdev, 1), "tdfx smem")) {
1439 printk(KERN_ERR "tdfxfb: Can't reserve smem\n");
1440 goto out_err_regbase;
1441 }
1442
1443 info->screen_base = ioremap_wc(offset: info->fix.smem_start,
1444 size: info->fix.smem_len);
1445 if (!info->screen_base) {
1446 printk(KERN_ERR "fb: Can't remap %s framebuffer.\n",
1447 info->fix.id);
1448 goto out_err_screenbase;
1449 }
1450
1451 default_par->iobase = pci_resource_start(pdev, 2);
1452
1453 if (!request_region(pci_resource_start(pdev, 2),
1454 pci_resource_len(pdev, 2), "tdfx iobase")) {
1455 printk(KERN_ERR "tdfxfb: Can't reserve iobase\n");
1456 goto out_err_screenbase;
1457 }
1458
1459 printk(KERN_INFO "fb: %s memory = %dK\n", info->fix.id,
1460 info->fix.smem_len >> 10);
1461
1462 if (!nomtrr)
1463 default_par->wc_cookie= arch_phys_wc_add(base: info->fix.smem_start,
1464 size: info->fix.smem_len);
1465
1466 info->fix.ypanstep = nopan ? 0 : 1;
1467 info->fix.ywrapstep = nowrap ? 0 : 1;
1468
1469 info->fbops = &tdfxfb_ops;
1470 info->pseudo_palette = default_par->palette;
1471 info->flags = FBINFO_HWACCEL_YPAN;
1472#ifdef CONFIG_FB_3DFX_ACCEL
1473 info->flags |= FBINFO_HWACCEL_FILLRECT |
1474 FBINFO_HWACCEL_COPYAREA |
1475 FBINFO_HWACCEL_IMAGEBLIT |
1476 FBINFO_READS_FAST;
1477#endif
1478 /* reserve 8192 bits for cursor */
1479 /* the 2.4 driver says PAGE_MASK boundary is not enough for Voodoo4 */
1480 if (hwcursor)
1481 info->fix.smem_len = (info->fix.smem_len - 1024) &
1482 (PAGE_MASK << 1);
1483 specs = &info->monspecs;
1484 found = false;
1485 info->var.bits_per_pixel = 8;
1486#ifdef CONFIG_FB_3DFX_I2C
1487 tdfxfb_create_i2c_busses(info);
1488 err = tdfxfb_probe_i2c_connector(par: default_par, specs);
1489
1490 if (!err) {
1491 if (specs->modedb == NULL)
1492 DPRINTK("Unable to get Mode Database\n");
1493 else {
1494 const struct fb_videomode *m;
1495
1496 fb_videomode_to_modelist(modedb: specs->modedb,
1497 num: specs->modedb_len,
1498 head: &info->modelist);
1499 m = fb_find_best_display(specs, head: &info->modelist);
1500 if (m) {
1501 fb_videomode_to_var(var: &info->var, mode: m);
1502 /* fill all other info->var's fields */
1503 if (tdfxfb_check_var(var: &info->var, info) < 0)
1504 info->var = tdfx_var;
1505 else
1506 found = true;
1507 }
1508 }
1509 }
1510#endif
1511 if (!mode_option && !found)
1512 mode_option = "640x480@60";
1513
1514 if (mode_option) {
1515 err = fb_find_mode(var: &info->var, info, mode_option,
1516 db: specs->modedb, dbsize: specs->modedb_len,
1517 NULL, default_bpp: info->var.bits_per_pixel);
1518 if (!err || err == 4)
1519 info->var = tdfx_var;
1520 }
1521
1522 if (found) {
1523 fb_destroy_modedb(modedb: specs->modedb);
1524 specs->modedb = NULL;
1525 }
1526
1527 /* maximize virtual vertical length */
1528 lpitch = info->var.xres_virtual * ((info->var.bits_per_pixel + 7) >> 3);
1529 info->var.yres_virtual = info->fix.smem_len / lpitch;
1530 if (info->var.yres_virtual < info->var.yres)
1531 goto out_err_iobase;
1532
1533 if (fb_alloc_cmap(cmap: &info->cmap, len: 256, transp: 0) < 0) {
1534 printk(KERN_ERR "tdfxfb: Can't allocate color map\n");
1535 goto out_err_iobase;
1536 }
1537
1538 if (register_framebuffer(fb_info: info) < 0) {
1539 printk(KERN_ERR "tdfxfb: can't register framebuffer\n");
1540 fb_dealloc_cmap(cmap: &info->cmap);
1541 goto out_err_iobase;
1542 }
1543 /*
1544 * Our driver data
1545 */
1546 pci_set_drvdata(pdev, data: info);
1547 return 0;
1548
1549out_err_iobase:
1550#ifdef CONFIG_FB_3DFX_I2C
1551 tdfxfb_delete_i2c_busses(par: default_par);
1552#endif
1553 arch_phys_wc_del(handle: default_par->wc_cookie);
1554 release_region(pci_resource_start(pdev, 2),
1555 pci_resource_len(pdev, 2));
1556out_err_screenbase:
1557 if (info->screen_base)
1558 iounmap(addr: info->screen_base);
1559 release_mem_region(info->fix.smem_start, pci_resource_len(pdev, 1));
1560out_err_regbase:
1561 /*
1562 * Cleanup after anything that was remapped/allocated.
1563 */
1564 if (default_par->regbase_virt)
1565 iounmap(addr: default_par->regbase_virt);
1566 release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
1567out_err:
1568 framebuffer_release(info);
1569 return -ENXIO;
1570}
1571
1572#ifndef MODULE
1573static void __init tdfxfb_setup(char *options)
1574{
1575 char *this_opt;
1576
1577 if (!options || !*options)
1578 return;
1579
1580 while ((this_opt = strsep(&options, ",")) != NULL) {
1581 if (!*this_opt)
1582 continue;
1583 if (!strcmp(this_opt, "nopan")) {
1584 nopan = 1;
1585 } else if (!strcmp(this_opt, "nowrap")) {
1586 nowrap = 1;
1587 } else if (!strncmp(this_opt, "hwcursor=", 9)) {
1588 hwcursor = simple_strtoul(this_opt + 9, NULL, 0);
1589 } else if (!strncmp(this_opt, "nomtrr", 6)) {
1590 nomtrr = 1;
1591 } else {
1592 mode_option = this_opt;
1593 }
1594 }
1595}
1596#endif
1597
1598/**
1599 * tdfxfb_remove - Device removal
1600 *
1601 * @pdev: PCI Device to cleanup
1602 *
1603 * Releases all resources allocated during the course of the driver's
1604 * lifetime for the PCI device @pdev.
1605 *
1606 */
1607static void tdfxfb_remove(struct pci_dev *pdev)
1608{
1609 struct fb_info *info = pci_get_drvdata(pdev);
1610 struct tdfx_par *par = info->par;
1611
1612 unregister_framebuffer(fb_info: info);
1613#ifdef CONFIG_FB_3DFX_I2C
1614 tdfxfb_delete_i2c_busses(par);
1615#endif
1616 arch_phys_wc_del(handle: par->wc_cookie);
1617 iounmap(addr: par->regbase_virt);
1618 iounmap(addr: info->screen_base);
1619
1620 /* Clean up after reserved regions */
1621 release_region(pci_resource_start(pdev, 2),
1622 pci_resource_len(pdev, 2));
1623 release_mem_region(pci_resource_start(pdev, 1),
1624 pci_resource_len(pdev, 1));
1625 release_mem_region(pci_resource_start(pdev, 0),
1626 pci_resource_len(pdev, 0));
1627 fb_dealloc_cmap(cmap: &info->cmap);
1628 framebuffer_release(info);
1629}
1630
1631static int __init tdfxfb_init(void)
1632{
1633#ifndef MODULE
1634 char *option = NULL;
1635#endif
1636
1637 if (fb_modesetting_disabled(drvname: "tdfxfb"))
1638 return -ENODEV;
1639
1640#ifndef MODULE
1641 if (fb_get_options(name: "tdfxfb", option: &option))
1642 return -ENODEV;
1643
1644 tdfxfb_setup(options: option);
1645#endif
1646 return pci_register_driver(&tdfxfb_driver);
1647}
1648
1649static void __exit tdfxfb_exit(void)
1650{
1651 pci_unregister_driver(dev: &tdfxfb_driver);
1652}
1653
1654MODULE_AUTHOR("Hannu Mallat <hmallat@cc.hut.fi>");
1655MODULE_DESCRIPTION("3Dfx framebuffer device driver");
1656MODULE_LICENSE("GPL");
1657
1658module_param(hwcursor, int, 0644);
1659MODULE_PARM_DESC(hwcursor, "Enable hardware cursor "
1660 "(1=enable, 0=disable, default=1)");
1661module_param(mode_option, charp, 0);
1662MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
1663module_param(nomtrr, bool, 0);
1664MODULE_PARM_DESC(nomtrr, "Disable MTRR support (default: enabled)");
1665
1666module_init(tdfxfb_init);
1667module_exit(tdfxfb_exit);
1668

source code of linux/drivers/video/fbdev/tdfxfb.c