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b43: Workaround DMA quirks
[linux-2.6/sactl.git] / drivers / video / ffb.c
blobd7e24889650e25e83d3b1ebf82bbb3ccd08bb3ff
1 /* ffb.c: Creator/Elite3D frame buffer driver
2 *
3 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
5 *
6 * Driver layout based loosely on tgafb.c, see that file for credits.
7 */
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/errno.h>
12 #include <linux/string.h>
13 #include <linux/slab.h>
14 #include <linux/delay.h>
15 #include <linux/init.h>
16 #include <linux/fb.h>
17 #include <linux/mm.h>
18 #include <linux/timer.h>
19
20 #include <asm/io.h>
21 #include <asm/upa.h>
22 #include <asm/prom.h>
23 #include <asm/of_device.h>
24 #include <asm/fbio.h>
25
26 #include "sbuslib.h"
27
28 /*
29 * Local functions.
30 */
31
32 static int ffb_setcolreg(unsigned, unsigned, unsigned, unsigned,
33 unsigned, struct fb_info *);
34 static int ffb_blank(int, struct fb_info *);
35 static void ffb_init_fix(struct fb_info *);
36
37 static void ffb_imageblit(struct fb_info *, const struct fb_image *);
38 static void ffb_fillrect(struct fb_info *, const struct fb_fillrect *);
39 static void ffb_copyarea(struct fb_info *, const struct fb_copyarea *);
40 static int ffb_sync(struct fb_info *);
41 static int ffb_mmap(struct fb_info *, struct vm_area_struct *);
42 static int ffb_ioctl(struct fb_info *, unsigned int, unsigned long);
43 static int ffb_pan_display(struct fb_var_screeninfo *, struct fb_info *);
44
45 /*
46 * Frame buffer operations
47 */
48
49 static struct fb_ops ffb_ops = {
50 .owner = THIS_MODULE,
51 .fb_setcolreg = ffb_setcolreg,
52 .fb_blank = ffb_blank,
53 .fb_pan_display = ffb_pan_display,
54 .fb_fillrect = ffb_fillrect,
55 .fb_copyarea = ffb_copyarea,
56 .fb_imageblit = ffb_imageblit,
57 .fb_sync = ffb_sync,
58 .fb_mmap = ffb_mmap,
59 .fb_ioctl = ffb_ioctl,
60 #ifdef CONFIG_COMPAT
61 .fb_compat_ioctl = sbusfb_compat_ioctl,
62 #endif
63 };
64
65 /* Register layout and definitions */
66 #define FFB_SFB8R_VOFF 0x00000000
67 #define FFB_SFB8G_VOFF 0x00400000
68 #define FFB_SFB8B_VOFF 0x00800000
69 #define FFB_SFB8X_VOFF 0x00c00000
70 #define FFB_SFB32_VOFF 0x01000000
71 #define FFB_SFB64_VOFF 0x02000000
72 #define FFB_FBC_REGS_VOFF 0x04000000
73 #define FFB_BM_FBC_REGS_VOFF 0x04002000
74 #define FFB_DFB8R_VOFF 0x04004000
75 #define FFB_DFB8G_VOFF 0x04404000
76 #define FFB_DFB8B_VOFF 0x04804000
77 #define FFB_DFB8X_VOFF 0x04c04000
78 #define FFB_DFB24_VOFF 0x05004000
79 #define FFB_DFB32_VOFF 0x06004000
80 #define FFB_DFB422A_VOFF 0x07004000 /* DFB 422 mode write to A */
81 #define FFB_DFB422AD_VOFF 0x07804000 /* DFB 422 mode with line doubling */
82 #define FFB_DFB24B_VOFF 0x08004000 /* DFB 24bit mode write to B */
83 #define FFB_DFB422B_VOFF 0x09004000 /* DFB 422 mode write to B */
84 #define FFB_DFB422BD_VOFF 0x09804000 /* DFB 422 mode with line doubling */
85 #define FFB_SFB16Z_VOFF 0x0a004000 /* 16bit mode Z planes */
86 #define FFB_SFB8Z_VOFF 0x0a404000 /* 8bit mode Z planes */
87 #define FFB_SFB422_VOFF 0x0ac04000 /* SFB 422 mode write to A/B */
88 #define FFB_SFB422D_VOFF 0x0b404000 /* SFB 422 mode with line doubling */
89 #define FFB_FBC_KREGS_VOFF 0x0bc04000
90 #define FFB_DAC_VOFF 0x0bc06000
91 #define FFB_PROM_VOFF 0x0bc08000
92 #define FFB_EXP_VOFF 0x0bc18000
93
94 #define FFB_SFB8R_POFF 0x04000000UL
95 #define FFB_SFB8G_POFF 0x04400000UL
96 #define FFB_SFB8B_POFF 0x04800000UL
97 #define FFB_SFB8X_POFF 0x04c00000UL
98 #define FFB_SFB32_POFF 0x05000000UL
99 #define FFB_SFB64_POFF 0x06000000UL
100 #define FFB_FBC_REGS_POFF 0x00600000UL
101 #define FFB_BM_FBC_REGS_POFF 0x00600000UL
102 #define FFB_DFB8R_POFF 0x01000000UL
103 #define FFB_DFB8G_POFF 0x01400000UL
104 #define FFB_DFB8B_POFF 0x01800000UL
105 #define FFB_DFB8X_POFF 0x01c00000UL
106 #define FFB_DFB24_POFF 0x02000000UL
107 #define FFB_DFB32_POFF 0x03000000UL
108 #define FFB_FBC_KREGS_POFF 0x00610000UL
109 #define FFB_DAC_POFF 0x00400000UL
110 #define FFB_PROM_POFF 0x00000000UL
111 #define FFB_EXP_POFF 0x00200000UL
112 #define FFB_DFB422A_POFF 0x09000000UL
113 #define FFB_DFB422AD_POFF 0x09800000UL
114 #define FFB_DFB24B_POFF 0x0a000000UL
115 #define FFB_DFB422B_POFF 0x0b000000UL
116 #define FFB_DFB422BD_POFF 0x0b800000UL
117 #define FFB_SFB16Z_POFF 0x0c800000UL
118 #define FFB_SFB8Z_POFF 0x0c000000UL
119 #define FFB_SFB422_POFF 0x0d000000UL
120 #define FFB_SFB422D_POFF 0x0d800000UL
121
122 /* Draw operations */
123 #define FFB_DRAWOP_DOT 0x00
124 #define FFB_DRAWOP_AADOT 0x01
125 #define FFB_DRAWOP_BRLINECAP 0x02
126 #define FFB_DRAWOP_BRLINEOPEN 0x03
127 #define FFB_DRAWOP_DDLINE 0x04
128 #define FFB_DRAWOP_AALINE 0x05
129 #define FFB_DRAWOP_TRIANGLE 0x06
130 #define FFB_DRAWOP_POLYGON 0x07
131 #define FFB_DRAWOP_RECTANGLE 0x08
132 #define FFB_DRAWOP_FASTFILL 0x09
133 #define FFB_DRAWOP_BCOPY 0x0a
134 #define FFB_DRAWOP_VSCROLL 0x0b
135
136 /* Pixel processor control */
137 /* Force WID */
138 #define FFB_PPC_FW_DISABLE 0x800000
139 #define FFB_PPC_FW_ENABLE 0xc00000
140 /* Auxiliary clip */
141 #define FFB_PPC_ACE_DISABLE 0x040000
142 #define FFB_PPC_ACE_AUX_SUB 0x080000
143 #define FFB_PPC_ACE_AUX_ADD 0x0c0000
144 /* Depth cue */
145 #define FFB_PPC_DCE_DISABLE 0x020000
146 #define FFB_PPC_DCE_ENABLE 0x030000
147 /* Alpha blend */
148 #define FFB_PPC_ABE_DISABLE 0x008000
149 #define FFB_PPC_ABE_ENABLE 0x00c000
150 /* View clip */
151 #define FFB_PPC_VCE_DISABLE 0x001000
152 #define FFB_PPC_VCE_2D 0x002000
153 #define FFB_PPC_VCE_3D 0x003000
154 /* Area pattern */
155 #define FFB_PPC_APE_DISABLE 0x000800
156 #define FFB_PPC_APE_ENABLE 0x000c00
157 /* Transparent background */
158 #define FFB_PPC_TBE_OPAQUE 0x000200
159 #define FFB_PPC_TBE_TRANSPARENT 0x000300
160 /* Z source */
161 #define FFB_PPC_ZS_VAR 0x000080
162 #define FFB_PPC_ZS_CONST 0x0000c0
163 /* Y source */
164 #define FFB_PPC_YS_VAR 0x000020
165 #define FFB_PPC_YS_CONST 0x000030
166 /* X source */
167 #define FFB_PPC_XS_WID 0x000004
168 #define FFB_PPC_XS_VAR 0x000008
169 #define FFB_PPC_XS_CONST 0x00000c
170 /* Color (BGR) source */
171 #define FFB_PPC_CS_VAR 0x000002
172 #define FFB_PPC_CS_CONST 0x000003
173
174 #define FFB_ROP_NEW 0x83
175 #define FFB_ROP_OLD 0x85
176 #define FFB_ROP_NEW_XOR_OLD 0x86
177
178 #define FFB_UCSR_FIFO_MASK 0x00000fff
179 #define FFB_UCSR_FB_BUSY 0x01000000
180 #define FFB_UCSR_RP_BUSY 0x02000000
181 #define FFB_UCSR_ALL_BUSY (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)
182 #define FFB_UCSR_READ_ERR 0x40000000
183 #define FFB_UCSR_FIFO_OVFL 0x80000000
184 #define FFB_UCSR_ALL_ERRORS (FFB_UCSR_READ_ERR|FFB_UCSR_FIFO_OVFL)
185
186 struct ffb_fbc {
187 /* Next vertex registers */
188 u32 xxx1[3];
189 u32 alpha;
190 u32 red;
191 u32 green;
192 u32 blue;
193 u32 depth;
194 u32 y;
195 u32 x;
196 u32 xxx2[2];
197 u32 ryf;
198 u32 rxf;
199 u32 xxx3[2];
200
201 u32 dmyf;
202 u32 dmxf;
203 u32 xxx4[2];
204 u32 ebyi;
205 u32 ebxi;
206 u32 xxx5[2];
207 u32 by;
208 u32 bx;
209 u32 dy;
210 u32 dx;
211 u32 bh;
212 u32 bw;
213 u32 xxx6[2];
214
215 u32 xxx7[32];
216
217 /* Setup unit vertex state register */
218 u32 suvtx;
219 u32 xxx8[63];
220
221 /* Control registers */
222 u32 ppc;
223 u32 wid;
224 u32 fg;
225 u32 bg;
226 u32 consty;
227 u32 constz;
228 u32 xclip;
229 u32 dcss;
230 u32 vclipmin;
231 u32 vclipmax;
232 u32 vclipzmin;
233 u32 vclipzmax;
234 u32 dcsf;
235 u32 dcsb;
236 u32 dczf;
237 u32 dczb;
238
239 u32 xxx9;
240 u32 blendc;
241 u32 blendc1;
242 u32 blendc2;
243 u32 fbramitc;
244 u32 fbc;
245 u32 rop;
246 u32 cmp;
247 u32 matchab;
248 u32 matchc;
249 u32 magnab;
250 u32 magnc;
251 u32 fbcfg0;
252 u32 fbcfg1;
253 u32 fbcfg2;
254 u32 fbcfg3;
255
256 u32 ppcfg;
257 u32 pick;
258 u32 fillmode;
259 u32 fbramwac;
260 u32 pmask;
261 u32 xpmask;
262 u32 ypmask;
263 u32 zpmask;
264 u32 clip0min;
265 u32 clip0max;
266 u32 clip1min;
267 u32 clip1max;
268 u32 clip2min;
269 u32 clip2max;
270 u32 clip3min;
271 u32 clip3max;
272
273 /* New 3dRAM III support regs */
274 u32 rawblend2;
275 u32 rawpreblend;
276 u32 rawstencil;
277 u32 rawstencilctl;
278 u32 threedram1;
279 u32 threedram2;
280 u32 passin;
281 u32 rawclrdepth;
282 u32 rawpmask;
283 u32 rawcsrc;
284 u32 rawmatch;
285 u32 rawmagn;
286 u32 rawropblend;
287 u32 rawcmp;
288 u32 rawwac;
289 u32 fbramid;
290
291 u32 drawop;
292 u32 xxx10[2];
293 u32 fontlpat;
294 u32 xxx11;
295 u32 fontxy;
296 u32 fontw;
297 u32 fontinc;
298 u32 font;
299 u32 xxx12[3];
300 u32 blend2;
301 u32 preblend;
302 u32 stencil;
303 u32 stencilctl;
304
305 u32 xxx13[4];
306 u32 dcss1;
307 u32 dcss2;
308 u32 dcss3;
309 u32 widpmask;
310 u32 dcs2;
311 u32 dcs3;
312 u32 dcs4;
313 u32 xxx14;
314 u32 dcd2;
315 u32 dcd3;
316 u32 dcd4;
317 u32 xxx15;
318
319 u32 pattern[32];
320
321 u32 xxx16[256];
322
323 u32 devid;
324 u32 xxx17[63];
325
326 u32 ucsr;
327 u32 xxx18[31];
328
329 u32 mer;
330 };
331
332 struct ffb_dac {
333 u32 type;
334 u32 value;
335 u32 type2;
336 u32 value2;
337 };
338
339 #define FFB_DAC_UCTRL 0x1001 /* User Control */
340 #define FFB_DAC_UCTRL_MANREV 0x00000f00 /* 4-bit Manufacturing Revision */
341 #define FFB_DAC_UCTRL_MANREV_SHIFT 8
342 #define FFB_DAC_TGEN 0x6000 /* Timing Generator */
343 #define FFB_DAC_TGEN_VIDE 0x00000001 /* Video Enable */
344 #define FFB_DAC_DID 0x8000 /* Device Identification */
345 #define FFB_DAC_DID_PNUM 0x0ffff000 /* Device Part Number */
346 #define FFB_DAC_DID_PNUM_SHIFT 12
347 #define FFB_DAC_DID_REV 0xf0000000 /* Device Revision */
348 #define FFB_DAC_DID_REV_SHIFT 28
349
350 #define FFB_DAC_CUR_CTRL 0x100
351 #define FFB_DAC_CUR_CTRL_P0 0x00000001
352 #define FFB_DAC_CUR_CTRL_P1 0x00000002
353
354 struct ffb_par {
355 spinlock_t lock;
356 struct ffb_fbc __iomem *fbc;
357 struct ffb_dac __iomem *dac;
358
359 u32 flags;
360 #define FFB_FLAG_AFB 0x00000001 /* AFB m3 or m6 */
361 #define FFB_FLAG_BLANKED 0x00000002 /* screen is blanked */
362 #define FFB_FLAG_INVCURSOR 0x00000004 /* DAC has inverted cursor logic */
363
364 u32 fg_cache __attribute__((aligned (8)));
365 u32 bg_cache;
366 u32 rop_cache;
367
368 int fifo_cache;
369
370 unsigned long physbase;
371 unsigned long fbsize;
372
373 int board_type;
374
375 u32 pseudo_palette[16];
376 };
377
378 static void FFBFifo(struct ffb_par *par, int n)
379 {
380 struct ffb_fbc __iomem *fbc;
381 int cache = par->fifo_cache;
382
383 if (cache - n < 0) {
384 fbc = par->fbc;
385 do {
386 cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK);
387 cache -= 8;
388 } while (cache - n < 0);
389 }
390 par->fifo_cache = cache - n;
391 }
392
393 static void FFBWait(struct ffb_par *par)
394 {
395 struct ffb_fbc __iomem *fbc;
396 int limit = 10000;
397
398 fbc = par->fbc;
399 do {
400 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
401 break;
402 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
403 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
404 }
405 udelay(10);
406 } while (--limit > 0);
407 }
408
409 static int ffb_sync(struct fb_info *p)
410 {
411 struct ffb_par *par = (struct ffb_par *)p->par;
412
413 FFBWait(par);
414 return 0;
415 }
416
417 static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
418 {
419 if (par->rop_cache != rop) {
420 FFBFifo(par, 1);
421 upa_writel(rop, &par->fbc->rop);
422 par->rop_cache = rop;
423 }
424 }
425
426 static void ffb_switch_from_graph(struct ffb_par *par)
427 {
428 struct ffb_fbc __iomem *fbc = par->fbc;
429 struct ffb_dac __iomem *dac = par->dac;
430 unsigned long flags;
431
432 spin_lock_irqsave(&par->lock, flags);
433 FFBWait(par);
434 par->fifo_cache = 0;
435 FFBFifo(par, 7);
436 upa_writel(FFB_PPC_VCE_DISABLE | FFB_PPC_TBE_OPAQUE |
437 FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
438 &fbc->ppc);
439 upa_writel(0x2000707f, &fbc->fbc);
440 upa_writel(par->rop_cache, &fbc->rop);
441 upa_writel(0xffffffff, &fbc->pmask);
442 upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
443 upa_writel(par->fg_cache, &fbc->fg);
444 upa_writel(par->bg_cache, &fbc->bg);
445 FFBWait(par);
446
447 /* Disable cursor. */
448 upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
449 if (par->flags & FFB_FLAG_INVCURSOR)
450 upa_writel(0, &dac->value2);
451 else
452 upa_writel((FFB_DAC_CUR_CTRL_P0 |
453 FFB_DAC_CUR_CTRL_P1), &dac->value2);
454
455 spin_unlock_irqrestore(&par->lock, flags);
456 }
457
458 static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
459 {
460 struct ffb_par *par = (struct ffb_par *)info->par;
461
462 /* We just use this to catch switches out of
463 * graphics mode.
464 */
465 ffb_switch_from_graph(par);
466
467 if (var->xoffset || var->yoffset || var->vmode)
468 return -EINVAL;
469 return 0;
470 }
471
472 /**
473 * ffb_fillrect - Draws a rectangle on the screen.
474 *
475 * @info: frame buffer structure that represents a single frame buffer
476 * @rect: structure defining the rectagle and operation.
477 */
478 static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
479 {
480 struct ffb_par *par = (struct ffb_par *)info->par;
481 struct ffb_fbc __iomem *fbc = par->fbc;
482 unsigned long flags;
483 u32 fg;
484
485 BUG_ON(rect->rop != ROP_COPY && rect->rop != ROP_XOR);
486
487 fg = ((u32 *)info->pseudo_palette)[rect->color];
488
489 spin_lock_irqsave(&par->lock, flags);
490
491 if (fg != par->fg_cache) {
492 FFBFifo(par, 1);
493 upa_writel(fg, &fbc->fg);
494 par->fg_cache = fg;
495 }
496
497 ffb_rop(par, rect->rop == ROP_COPY ?
498 FFB_ROP_NEW :
499 FFB_ROP_NEW_XOR_OLD);
500
501 FFBFifo(par, 5);
502 upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
503 upa_writel(rect->dy, &fbc->by);
504 upa_writel(rect->dx, &fbc->bx);
505 upa_writel(rect->height, &fbc->bh);
506 upa_writel(rect->width, &fbc->bw);
507
508 spin_unlock_irqrestore(&par->lock, flags);
509 }
510
511 /**
512 * ffb_copyarea - Copies on area of the screen to another area.
513 *
514 * @info: frame buffer structure that represents a single frame buffer
515 * @area: structure defining the source and destination.
516 */
517
518 static void ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
519 {
520 struct ffb_par *par = (struct ffb_par *)info->par;
521 struct ffb_fbc __iomem *fbc = par->fbc;
522 unsigned long flags;
523
524 if (area->dx != area->sx ||
525 area->dy == area->sy) {
526 cfb_copyarea(info, area);
527 return;
528 }
529
530 spin_lock_irqsave(&par->lock, flags);
531
532 ffb_rop(par, FFB_ROP_OLD);
533
534 FFBFifo(par, 7);
535 upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
536 upa_writel(area->sy, &fbc->by);
537 upa_writel(area->sx, &fbc->bx);
538 upa_writel(area->dy, &fbc->dy);
539 upa_writel(area->dx, &fbc->dx);
540 upa_writel(area->height, &fbc->bh);
541 upa_writel(area->width, &fbc->bw);
542
543 spin_unlock_irqrestore(&par->lock, flags);
544 }
545
546 /**
547 * ffb_imageblit - Copies a image from system memory to the screen.
548 *
549 * @info: frame buffer structure that represents a single frame buffer
550 * @image: structure defining the image.
551 */
552 static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
553 {
554 struct ffb_par *par = (struct ffb_par *)info->par;
555 struct ffb_fbc __iomem *fbc = par->fbc;
556 const u8 *data = image->data;
557 unsigned long flags;
558 u32 fg, bg, xy;
559 u64 fgbg;
560 int i, width, stride;
561
562 if (image->depth > 1) {
563 cfb_imageblit(info, image);
564 return;
565 }
566
567 fg = ((u32 *)info->pseudo_palette)[image->fg_color];
568 bg = ((u32 *)info->pseudo_palette)[image->bg_color];
569 fgbg = ((u64) fg << 32) | (u64) bg;
570 xy = (image->dy << 16) | image->dx;
571 width = image->width;
572 stride = ((width + 7) >> 3);
573
574 spin_lock_irqsave(&par->lock, flags);
575
576 if (fgbg != *(u64 *)&par->fg_cache) {
577 FFBFifo(par, 2);
578 upa_writeq(fgbg, &fbc->fg);
579 *(u64 *)&par->fg_cache = fgbg;
580 }
581
582 if (width >= 32) {
583 FFBFifo(par, 1);
584 upa_writel(32, &fbc->fontw);
585 }
586
587 while (width >= 32) {
588 const u8 *next_data = data + 4;
589
590 FFBFifo(par, 1);
591 upa_writel(xy, &fbc->fontxy);
592 xy += (32 << 0);
593
594 for (i = 0; i < image->height; i++) {
595 u32 val = (((u32)data[0] << 24) |
596 ((u32)data[1] << 16) |
597 ((u32)data[2] << 8) |
598 ((u32)data[3] << 0));
599 FFBFifo(par, 1);
600 upa_writel(val, &fbc->font);
601
602 data += stride;
603 }
604
605 data = next_data;
606 width -= 32;
607 }
608
609 if (width) {
610 FFBFifo(par, 2);
611 upa_writel(width, &fbc->fontw);
612 upa_writel(xy, &fbc->fontxy);
613
614 for (i = 0; i < image->height; i++) {
615 u32 val = (((u32)data[0] << 24) |
616 ((u32)data[1] << 16) |
617 ((u32)data[2] << 8) |
618 ((u32)data[3] << 0));
619 FFBFifo(par, 1);
620 upa_writel(val, &fbc->font);
621
622 data += stride;
623 }
624 }
625
626 spin_unlock_irqrestore(&par->lock, flags);
627 }
628
629 static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
630 {
631 var->red.offset = 0;
632 var->red.length = 8;
633 var->green.offset = 8;
634 var->green.length = 8;
635 var->blue.offset = 16;
636 var->blue.length = 8;
637 var->transp.offset = 0;
638 var->transp.length = 0;
639 }
640
641 /**
642 * ffb_setcolreg - Sets a color register.
643 *
644 * @regno: boolean, 0 copy local, 1 get_user() function
645 * @red: frame buffer colormap structure
646 * @green: The green value which can be up to 16 bits wide
647 * @blue: The blue value which can be up to 16 bits wide.
648 * @transp: If supported the alpha value which can be up to 16 bits wide.
649 * @info: frame buffer info structure
650 */
651 static int ffb_setcolreg(unsigned regno,
652 unsigned red, unsigned green, unsigned blue,
653 unsigned transp, struct fb_info *info)
654 {
655 u32 value;
656
657 if (regno >= 16)
658 return 1;
659
660 red >>= 8;
661 green >>= 8;
662 blue >>= 8;
663
664 value = (blue << 16) | (green << 8) | red;
665 ((u32 *)info->pseudo_palette)[regno] = value;
666
667 return 0;
668 }
669
670 /**
671 * ffb_blank - Optional function. Blanks the display.
672 * @blank_mode: the blank mode we want.
673 * @info: frame buffer structure that represents a single frame buffer
674 */
675 static int ffb_blank(int blank, struct fb_info *info)
676 {
677 struct ffb_par *par = (struct ffb_par *)info->par;
678 struct ffb_dac __iomem *dac = par->dac;
679 unsigned long flags;
680 u32 val;
681 int i;
682
683 spin_lock_irqsave(&par->lock, flags);
684
685 FFBWait(par);
686
687 upa_writel(FFB_DAC_TGEN, &dac->type);
688 val = upa_readl(&dac->value);
689 switch (blank) {
690 case FB_BLANK_UNBLANK: /* Unblanking */
691 val |= FFB_DAC_TGEN_VIDE;
692 par->flags &= ~FFB_FLAG_BLANKED;
693 break;
694
695 case FB_BLANK_NORMAL: /* Normal blanking */
696 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
697 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
698 case FB_BLANK_POWERDOWN: /* Poweroff */
699 val &= ~FFB_DAC_TGEN_VIDE;
700 par->flags |= FFB_FLAG_BLANKED;
701 break;
702 }
703 upa_writel(FFB_DAC_TGEN, &dac->type);
704 upa_writel(val, &dac->value);
705 for (i = 0; i < 10; i++) {
706 upa_writel(FFB_DAC_TGEN, &dac->type);
707 upa_readl(&dac->value);
708 }
709
710 spin_unlock_irqrestore(&par->lock, flags);
711
712 return 0;
713 }
714
715 static struct sbus_mmap_map ffb_mmap_map[] = {
716 {
717 .voff = FFB_SFB8R_VOFF,
718 .poff = FFB_SFB8R_POFF,
719 .size = 0x0400000
720 },
721 {
722 .voff = FFB_SFB8G_VOFF,
723 .poff = FFB_SFB8G_POFF,
724 .size = 0x0400000
725 },
726 {
727 .voff = FFB_SFB8B_VOFF,
728 .poff = FFB_SFB8B_POFF,
729 .size = 0x0400000
730 },
731 {
732 .voff = FFB_SFB8X_VOFF,
733 .poff = FFB_SFB8X_POFF,
734 .size = 0x0400000
735 },
736 {
737 .voff = FFB_SFB32_VOFF,
738 .poff = FFB_SFB32_POFF,
739 .size = 0x1000000
740 },
741 {
742 .voff = FFB_SFB64_VOFF,
743 .poff = FFB_SFB64_POFF,
744 .size = 0x2000000
745 },
746 {
747 .voff = FFB_FBC_REGS_VOFF,
748 .poff = FFB_FBC_REGS_POFF,
749 .size = 0x0002000
750 },
751 {
752 .voff = FFB_BM_FBC_REGS_VOFF,
753 .poff = FFB_BM_FBC_REGS_POFF,
754 .size = 0x0002000
755 },
756 {
757 .voff = FFB_DFB8R_VOFF,
758 .poff = FFB_DFB8R_POFF,
759 .size = 0x0400000
760 },
761 {
762 .voff = FFB_DFB8G_VOFF,
763 .poff = FFB_DFB8G_POFF,
764 .size = 0x0400000
765 },
766 {
767 .voff = FFB_DFB8B_VOFF,
768 .poff = FFB_DFB8B_POFF,
769 .size = 0x0400000
770 },
771 {
772 .voff = FFB_DFB8X_VOFF,
773 .poff = FFB_DFB8X_POFF,
774 .size = 0x0400000
775 },
776 {
777 .voff = FFB_DFB24_VOFF,
778 .poff = FFB_DFB24_POFF,
779 .size = 0x1000000
780 },
781 {
782 .voff = FFB_DFB32_VOFF,
783 .poff = FFB_DFB32_POFF,
784 .size = 0x1000000
785 },
786 {
787 .voff = FFB_FBC_KREGS_VOFF,
788 .poff = FFB_FBC_KREGS_POFF,
789 .size = 0x0002000
790 },
791 {
792 .voff = FFB_DAC_VOFF,
793 .poff = FFB_DAC_POFF,
794 .size = 0x0002000
795 },
796 {
797 .voff = FFB_PROM_VOFF,
798 .poff = FFB_PROM_POFF,
799 .size = 0x0010000
800 },
801 {
802 .voff = FFB_EXP_VOFF,
803 .poff = FFB_EXP_POFF,
804 .size = 0x0002000
805 },
806 {
807 .voff = FFB_DFB422A_VOFF,
808 .poff = FFB_DFB422A_POFF,
809 .size = 0x0800000
810 },
811 {
812 .voff = FFB_DFB422AD_VOFF,
813 .poff = FFB_DFB422AD_POFF,
814 .size = 0x0800000
815 },
816 {
817 .voff = FFB_DFB24B_VOFF,
818 .poff = FFB_DFB24B_POFF,
819 .size = 0x1000000
820 },
821 {
822 .voff = FFB_DFB422B_VOFF,
823 .poff = FFB_DFB422B_POFF,
824 .size = 0x0800000
825 },
826 {
827 .voff = FFB_DFB422BD_VOFF,
828 .poff = FFB_DFB422BD_POFF,
829 .size = 0x0800000
830 },
831 {
832 .voff = FFB_SFB16Z_VOFF,
833 .poff = FFB_SFB16Z_POFF,
834 .size = 0x0800000
835 },
836 {
837 .voff = FFB_SFB8Z_VOFF,
838 .poff = FFB_SFB8Z_POFF,
839 .size = 0x0800000
840 },
841 {
842 .voff = FFB_SFB422_VOFF,
843 .poff = FFB_SFB422_POFF,
844 .size = 0x0800000
845 },
846 {
847 .voff = FFB_SFB422D_VOFF,
848 .poff = FFB_SFB422D_POFF,
849 .size = 0x0800000
850 },
851 { .size = 0 }
852 };
853
854 static int ffb_mmap(struct fb_info *info, struct vm_area_struct *vma)
855 {
856 struct ffb_par *par = (struct ffb_par *)info->par;
857
858 return sbusfb_mmap_helper(ffb_mmap_map,
859 par->physbase, par->fbsize,
860 0, vma);
861 }
862
863 static int ffb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
864 {
865 struct ffb_par *par = (struct ffb_par *)info->par;
866
867 return sbusfb_ioctl_helper(cmd, arg, info,
868 FBTYPE_CREATOR, 24, par->fbsize);
869 }
870
871 /*
872 * Initialisation
873 */
874
875 static void ffb_init_fix(struct fb_info *info)
876 {
877 struct ffb_par *par = (struct ffb_par *)info->par;
878 const char *ffb_type_name;
879
880 if (!(par->flags & FFB_FLAG_AFB)) {
881 if ((par->board_type & 0x7) == 0x3)
882 ffb_type_name = "Creator 3D";
883 else
884 ffb_type_name = "Creator";
885 } else
886 ffb_type_name = "Elite 3D";
887
888 strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
889
890 info->fix.type = FB_TYPE_PACKED_PIXELS;
891 info->fix.visual = FB_VISUAL_TRUECOLOR;
892
893 /* Framebuffer length is the same regardless of resolution. */
894 info->fix.line_length = 8192;
895
896 info->fix.accel = FB_ACCEL_SUN_CREATOR;
897 }
898
899 static int __devinit ffb_probe(struct of_device *op,
900 const struct of_device_id *match)
901 {
902 struct device_node *dp = op->node;
903 struct ffb_fbc __iomem *fbc;
904 struct ffb_dac __iomem *dac;
905 struct fb_info *info;
906 struct ffb_par *par;
907 u32 dac_pnum, dac_rev, dac_mrev;
908 int err;
909
910 info = framebuffer_alloc(sizeof(struct ffb_par), &op->dev);
911
912 err = -ENOMEM;
913 if (!info)
914 goto out_err;
915
916 par = info->par;
917
918 spin_lock_init(&par->lock);
919 par->fbc = of_ioremap(&op->resource[2], 0,
920 sizeof(struct ffb_fbc), "ffb fbc");
921 if (!par->fbc)
922 goto out_release_fb;
923
924 par->dac = of_ioremap(&op->resource[1], 0,
925 sizeof(struct ffb_dac), "ffb dac");
926 if (!par->dac)
927 goto out_unmap_fbc;
928
929 par->rop_cache = FFB_ROP_NEW;
930 par->physbase = op->resource[0].start;
931
932 /* Don't mention copyarea, so SCROLL_REDRAW is always
933 * used. It is the fastest on this chip.
934 */
935 info->flags = (FBINFO_DEFAULT |
936 /* FBINFO_HWACCEL_COPYAREA | */
937 FBINFO_HWACCEL_FILLRECT |
938 FBINFO_HWACCEL_IMAGEBLIT);
939
940 info->fbops = &ffb_ops;
941
942 info->screen_base = (char *) par->physbase + FFB_DFB24_POFF;
943 info->pseudo_palette = par->pseudo_palette;
944
945 sbusfb_fill_var(&info->var, dp->node, 32);
946 par->fbsize = PAGE_ALIGN(info->var.xres * info->var.yres * 4);
947 ffb_fixup_var_rgb(&info->var);
948
949 info->var.accel_flags = FB_ACCELF_TEXT;
950
951 if (!strcmp(dp->name, "SUNW,afb"))
952 par->flags |= FFB_FLAG_AFB;
953
954 par->board_type = of_getintprop_default(dp, "board_type", 0);
955
956 fbc = par->fbc;
957 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
958 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
959
960 dac = par->dac;
961 upa_writel(FFB_DAC_DID, &dac->type);
962 dac_pnum = upa_readl(&dac->value);
963 dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
964 dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
965
966 upa_writel(FFB_DAC_UCTRL, &dac->type);
967 dac_mrev = upa_readl(&dac->value);
968 dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
969 FFB_DAC_UCTRL_MANREV_SHIFT;
970
971 /* Elite3D has different DAC revision numbering, and no DAC revisions
972 * have the reversed meaning of cursor enable. Otherwise, Pacifica 1
973 * ramdacs with manufacturing revision less than 3 have inverted
974 * cursor logic. We identify Pacifica 1 as not Pacifica 2, the
975 * latter having a part number value of 0x236e.
976 */
977 if ((par->flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
978 par->flags &= ~FFB_FLAG_INVCURSOR;
979 } else {
980 if (dac_mrev < 3)
981 par->flags |= FFB_FLAG_INVCURSOR;
982 }
983
984 ffb_switch_from_graph(par);
985
986 /* Unblank it just to be sure. When there are multiple
987 * FFB/AFB cards in the system, or it is not the OBP
988 * chosen console, it will have video outputs off in
989 * the DAC.
990 */
991 ffb_blank(0, info);
992
993 if (fb_alloc_cmap(&info->cmap, 256, 0))
994 goto out_unmap_dac;
995
996 ffb_init_fix(info);
997
998 err = register_framebuffer(info);
999 if (err < 0)
1000 goto out_dealloc_cmap;
1001
1002 dev_set_drvdata(&op->dev, info);
1003
1004 printk("%s: %s at %016lx, type %d, "
1005 "DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
1006 dp->full_name,
1007 ((par->flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1008 par->physbase, par->board_type,
1009 dac_pnum, dac_rev, dac_mrev);
1010
1011 return 0;
1012
1013 out_dealloc_cmap:
1014 fb_dealloc_cmap(&info->cmap);
1015
1016 out_unmap_dac:
1017 of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1018
1019 out_unmap_fbc:
1020 of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1021
1022 out_release_fb:
1023 framebuffer_release(info);
1024
1025 out_err:
1026 return err;
1027 }
1028
1029 static int __devexit ffb_remove(struct of_device *op)
1030 {
1031 struct fb_info *info = dev_get_drvdata(&op->dev);
1032 struct ffb_par *par = info->par;
1033
1034 unregister_framebuffer(info);
1035 fb_dealloc_cmap(&info->cmap);
1036
1037 of_iounmap(&op->resource[2], par->fbc, sizeof(struct ffb_fbc));
1038 of_iounmap(&op->resource[1], par->dac, sizeof(struct ffb_dac));
1039
1040 framebuffer_release(info);
1041
1042 dev_set_drvdata(&op->dev, NULL);
1043
1044 return 0;
1045 }
1046
1047 static struct of_device_id ffb_match[] = {
1048 {
1049 .name = "SUNW,ffb",
1050 },
1051 {
1052 .name = "SUNW,afb",
1053 },
1054 {},
1055 };
1056 MODULE_DEVICE_TABLE(of, ffb_match);
1057
1058 static struct of_platform_driver ffb_driver = {
1059 .name = "ffb",
1060 .match_table = ffb_match,
1061 .probe = ffb_probe,
1062 .remove = __devexit_p(ffb_remove),
1063 };
1064
1065 int __init ffb_init(void)
1066 {
1067 if (fb_get_options("ffb", NULL))
1068 return -ENODEV;
1069
1070 return of_register_driver(&ffb_driver, &of_bus_type);
1071 }
1072
1073 void __exit ffb_exit(void)
1074 {
1075 of_unregister_driver(&ffb_driver);
1076 }
1077
1078 module_init(ffb_init);
1079 module_exit(ffb_exit);
1080
1081 MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1082 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
1083 MODULE_VERSION("2.0");
1084 MODULE_LICENSE("GPL");
SocketAccessConTroL development