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-rw-r--r--drivers/video/ffb.c1092
1 files changed, 1092 insertions, 0 deletions
diff --git a/drivers/video/ffb.c b/drivers/video/ffb.c
new file mode 100644
index 000000000000..10cd05059fe9
--- /dev/null
+++ b/drivers/video/ffb.c
@@ -0,0 +1,1092 @@
1/* ffb.c: Creator/Elite3D frame buffer driver
2 *
3 * Copyright (C) 2003 David S. Miller (davem@redhat.com)
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/oplib.h>
23#include <asm/fbio.h>
24
25#include "sbuslib.h"
26
27/*
28 * Local functions.
29 */
30
31static int ffb_setcolreg(unsigned, unsigned, unsigned, unsigned,
32 unsigned, struct fb_info *);
33static int ffb_blank(int, struct fb_info *);
34static void ffb_init_fix(struct fb_info *);
35
36static void ffb_imageblit(struct fb_info *, const struct fb_image *);
37static void ffb_fillrect(struct fb_info *, const struct fb_fillrect *);
38static void ffb_copyarea(struct fb_info *, const struct fb_copyarea *);
39static int ffb_sync(struct fb_info *);
40static int ffb_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
41static int ffb_ioctl(struct inode *, struct file *, unsigned int,
42 unsigned long, struct fb_info *);
43static int ffb_pan_display(struct fb_var_screeninfo *, struct fb_info *);
44
45/*
46 * Frame buffer operations
47 */
48
49static 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
61 /* XXX Use FFB hw cursor once fb cursor API is better understood... */
62 .fb_cursor = soft_cursor,
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
186struct ffb_fbc {
187 /* Next vertex registers */
188 u32 xxx1[3];
189 volatile u32 alpha;
190 volatile u32 red;
191 volatile u32 green;
192 volatile u32 blue;
193 volatile u32 depth;
194 volatile u32 y;
195 volatile u32 x;
196 u32 xxx2[2];
197 volatile u32 ryf;
198 volatile u32 rxf;
199 u32 xxx3[2];
200
201 volatile u32 dmyf;
202 volatile u32 dmxf;
203 u32 xxx4[2];
204 volatile u32 ebyi;
205 volatile u32 ebxi;
206 u32 xxx5[2];
207 volatile u32 by;
208 volatile u32 bx;
209 u32 dy;
210 u32 dx;
211 volatile u32 bh;
212 volatile u32 bw;
213 u32 xxx6[2];
214
215 u32 xxx7[32];
216
217 /* Setup unit vertex state register */
218 volatile u32 suvtx;
219 u32 xxx8[63];
220
221 /* Control registers */
222 volatile u32 ppc;
223 volatile u32 wid;
224 volatile u32 fg;
225 volatile u32 bg;
226 volatile u32 consty;
227 volatile u32 constz;
228 volatile u32 xclip;
229 volatile u32 dcss;
230 volatile u32 vclipmin;
231 volatile u32 vclipmax;
232 volatile u32 vclipzmin;
233 volatile u32 vclipzmax;
234 volatile u32 dcsf;
235 volatile u32 dcsb;
236 volatile u32 dczf;
237 volatile u32 dczb;
238
239 u32 xxx9;
240 volatile u32 blendc;
241 volatile u32 blendc1;
242 volatile u32 blendc2;
243 volatile u32 fbramitc;
244 volatile u32 fbc;
245 volatile u32 rop;
246 volatile u32 cmp;
247 volatile u32 matchab;
248 volatile u32 matchc;
249 volatile u32 magnab;
250 volatile u32 magnc;
251 volatile u32 fbcfg0;
252 volatile u32 fbcfg1;
253 volatile u32 fbcfg2;
254 volatile u32 fbcfg3;
255
256 u32 ppcfg;
257 volatile u32 pick;
258 volatile u32 fillmode;
259 volatile u32 fbramwac;
260 volatile u32 pmask;
261 volatile u32 xpmask;
262 volatile u32 ypmask;
263 volatile u32 zpmask;
264 volatile u32 clip0min;
265 volatile u32 clip0max;
266 volatile u32 clip1min;
267 volatile u32 clip1max;
268 volatile u32 clip2min;
269 volatile u32 clip2max;
270 volatile u32 clip3min;
271 volatile u32 clip3max;
272
273 /* New 3dRAM III support regs */
274 volatile u32 rawblend2;
275 volatile u32 rawpreblend;
276 volatile u32 rawstencil;
277 volatile u32 rawstencilctl;
278 volatile u32 threedram1;
279 volatile u32 threedram2;
280 volatile u32 passin;
281 volatile u32 rawclrdepth;
282 volatile u32 rawpmask;
283 volatile u32 rawcsrc;
284 volatile u32 rawmatch;
285 volatile u32 rawmagn;
286 volatile u32 rawropblend;
287 volatile u32 rawcmp;
288 volatile u32 rawwac;
289 volatile u32 fbramid;
290
291 volatile u32 drawop;
292 u32 xxx10[2];
293 volatile u32 fontlpat;
294 u32 xxx11;
295 volatile u32 fontxy;
296 volatile u32 fontw;
297 volatile u32 fontinc;
298 volatile u32 font;
299 u32 xxx12[3];
300 volatile u32 blend2;
301 volatile u32 preblend;
302 volatile u32 stencil;
303 volatile u32 stencilctl;
304
305 u32 xxx13[4];
306 volatile u32 dcss1;
307 volatile u32 dcss2;
308 volatile u32 dcss3;
309 volatile u32 widpmask;
310 volatile u32 dcs2;
311 volatile u32 dcs3;
312 volatile u32 dcs4;
313 u32 xxx14;
314 volatile u32 dcd2;
315 volatile u32 dcd3;
316 volatile u32 dcd4;
317 u32 xxx15;
318
319 volatile u32 pattern[32];
320
321 u32 xxx16[256];
322
323 volatile u32 devid;
324 u32 xxx17[63];
325
326 volatile u32 ucsr;
327 u32 xxx18[31];
328
329 volatile u32 mer;
330};
331
332struct ffb_dac {
333 volatile u32 type;
334 volatile u32 value;
335 volatile u32 type2;
336 volatile u32 value2;
337};
338
339struct ffb_par {
340 spinlock_t lock;
341 struct ffb_fbc *fbc;
342 struct ffb_dac *dac;
343
344 u32 flags;
345#define FFB_FLAG_AFB 0x00000001
346#define FFB_FLAG_BLANKED 0x00000002
347
348 u32 fg_cache __attribute__((aligned (8)));
349 u32 bg_cache;
350 u32 rop_cache;
351
352 int fifo_cache;
353
354 unsigned long physbase;
355 unsigned long fbsize;
356
357 char name[64];
358 int prom_node;
359 int prom_parent_node;
360 int dac_rev;
361 int board_type;
362 struct list_head list;
363};
364
365static void FFBFifo(struct ffb_par *par, int n)
366{
367 struct ffb_fbc *fbc;
368 int cache = par->fifo_cache;
369
370 if (cache - n < 0) {
371 fbc = par->fbc;
372 do { cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
373 } while (cache - n < 0);
374 }
375 par->fifo_cache = cache - n;
376}
377
378static void FFBWait(struct ffb_par *par)
379{
380 struct ffb_fbc *fbc;
381 int limit = 10000;
382
383 fbc = par->fbc;
384 do {
385 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
386 break;
387 if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
388 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
389 }
390 udelay(10);
391 } while(--limit > 0);
392}
393
394static int ffb_sync(struct fb_info *p)
395{
396 struct ffb_par *par = (struct ffb_par *) p->par;
397
398 FFBWait(par);
399 return 0;
400}
401
402static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
403{
404 if (par->rop_cache != rop) {
405 FFBFifo(par, 1);
406 upa_writel(rop, &par->fbc->rop);
407 par->rop_cache = rop;
408 }
409}
410
411static void ffb_switch_from_graph(struct ffb_par *par)
412{
413 struct ffb_fbc *fbc = par->fbc;
414 struct ffb_dac *dac = par->dac;
415 unsigned long flags;
416
417 spin_lock_irqsave(&par->lock, flags);
418 FFBWait(par);
419 par->fifo_cache = 0;
420 FFBFifo(par, 7);
421 upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
422 FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
423 &fbc->ppc);
424 upa_writel(0x2000707f, &fbc->fbc);
425 upa_writel(par->rop_cache, &fbc->rop);
426 upa_writel(0xffffffff, &fbc->pmask);
427 upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
428 upa_writel(par->fg_cache, &fbc->fg);
429 upa_writel(par->bg_cache, &fbc->bg);
430 FFBWait(par);
431
432 /* Disable cursor. */
433 upa_writel(0x100, &dac->type2);
434 if (par->dac_rev <= 2)
435 upa_writel(0, &dac->value2);
436 else
437 upa_writel(3, &dac->value2);
438
439 spin_unlock_irqrestore(&par->lock, flags);
440}
441
442static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
443{
444 struct ffb_par *par = (struct ffb_par *) info->par;
445
446 /* We just use this to catch switches out of
447 * graphics mode.
448 */
449 ffb_switch_from_graph(par);
450
451 if (var->xoffset || var->yoffset || var->vmode)
452 return -EINVAL;
453 return 0;
454}
455
456/**
457 * ffb_fillrect - REQUIRED function. Can use generic routines if
458 * non acclerated hardware and packed pixel based.
459 * Draws a rectangle on the screen.
460 *
461 * @info: frame buffer structure that represents a single frame buffer
462 * @rect: structure defining the rectagle and operation.
463 */
464static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
465{
466 struct ffb_par *par = (struct ffb_par *) info->par;
467 struct ffb_fbc *fbc = par->fbc;
468 unsigned long flags;
469 u32 fg;
470
471 if (rect->rop != ROP_COPY && rect->rop != ROP_XOR)
472 BUG();
473
474 fg = ((u32 *)info->pseudo_palette)[rect->color];
475
476 spin_lock_irqsave(&par->lock, flags);
477
478 if (fg != par->fg_cache) {
479 FFBFifo(par, 1);
480 upa_writel(fg, &fbc->fg);
481 par->fg_cache = fg;
482 }
483
484 ffb_rop(par, (rect->rop == ROP_COPY ?
485 FFB_ROP_NEW :
486 FFB_ROP_NEW_XOR_OLD));
487
488 FFBFifo(par, 5);
489 upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
490 upa_writel(rect->dy, &fbc->by);
491 upa_writel(rect->dx, &fbc->bx);
492 upa_writel(rect->height, &fbc->bh);
493 upa_writel(rect->width, &fbc->bw);
494
495 spin_unlock_irqrestore(&par->lock, flags);
496}
497
498/**
499 * ffb_copyarea - REQUIRED function. Can use generic routines if
500 * non acclerated hardware and packed pixel based.
501 * Copies on area of the screen to another area.
502 *
503 * @info: frame buffer structure that represents a single frame buffer
504 * @area: structure defining the source and destination.
505 */
506
507static void
508ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
509{
510 struct ffb_par *par = (struct ffb_par *) info->par;
511 struct ffb_fbc *fbc = par->fbc;
512 unsigned long flags;
513
514 if (area->dx != area->sx ||
515 area->dy == area->sy) {
516 cfb_copyarea(info, area);
517 return;
518 }
519
520 spin_lock_irqsave(&par->lock, flags);
521
522 ffb_rop(par, FFB_ROP_OLD);
523
524 FFBFifo(par, 7);
525 upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
526 upa_writel(area->sy, &fbc->by);
527 upa_writel(area->sx, &fbc->bx);
528 upa_writel(area->dy, &fbc->dy);
529 upa_writel(area->dx, &fbc->dx);
530 upa_writel(area->height, &fbc->bh);
531 upa_writel(area->width, &fbc->bw);
532
533 spin_unlock_irqrestore(&par->lock, flags);
534}
535
536/**
537 * ffb_imageblit - REQUIRED function. Can use generic routines if
538 * non acclerated hardware and packed pixel based.
539 * Copies a image from system memory to the screen.
540 *
541 * @info: frame buffer structure that represents a single frame buffer
542 * @image: structure defining the image.
543 */
544static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
545{
546 struct ffb_par *par = (struct ffb_par *) info->par;
547 struct ffb_fbc *fbc = par->fbc;
548 const u8 *data = image->data;
549 unsigned long flags;
550 u32 fg, bg, xy;
551 u64 fgbg;
552 int i, width, stride;
553
554 if (image->depth > 1) {
555 cfb_imageblit(info, image);
556 return;
557 }
558
559 fg = ((u32 *)info->pseudo_palette)[image->fg_color];
560 bg = ((u32 *)info->pseudo_palette)[image->bg_color];
561 fgbg = ((u64) fg << 32) | (u64) bg;
562 xy = (image->dy << 16) | image->dx;
563 width = image->width;
564 stride = ((width + 7) >> 3);
565
566 spin_lock_irqsave(&par->lock, flags);
567
568 if (fgbg != *(u64 *)&par->fg_cache) {
569 FFBFifo(par, 2);
570 upa_writeq(fgbg, &fbc->fg);
571 *(u64 *)&par->fg_cache = fgbg;
572 }
573
574 if (width >= 32) {
575 FFBFifo(par, 1);
576 upa_writel(32, &fbc->fontw);
577 }
578
579 while (width >= 32) {
580 const u8 *next_data = data + 4;
581
582 FFBFifo(par, 1);
583 upa_writel(xy, &fbc->fontxy);
584 xy += (32 << 0);
585
586 for (i = 0; i < image->height; i++) {
587 u32 val = (((u32)data[0] << 24) |
588 ((u32)data[1] << 16) |
589 ((u32)data[2] << 8) |
590 ((u32)data[3] << 0));
591 FFBFifo(par, 1);
592 upa_writel(val, &fbc->font);
593
594 data += stride;
595 }
596
597 data = next_data;
598 width -= 32;
599 }
600
601 if (width) {
602 FFBFifo(par, 2);
603 upa_writel(width, &fbc->fontw);
604 upa_writel(xy, &fbc->fontxy);
605
606 for (i = 0; i < image->height; i++) {
607 u32 val = (((u32)data[0] << 24) |
608 ((u32)data[1] << 16) |
609 ((u32)data[2] << 8) |
610 ((u32)data[3] << 0));
611 FFBFifo(par, 1);
612 upa_writel(val, &fbc->font);
613
614 data += stride;
615 }
616 }
617
618 spin_unlock_irqrestore(&par->lock, flags);
619}
620
621static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
622{
623 var->red.offset = 0;
624 var->red.length = 8;
625 var->green.offset = 8;
626 var->green.length = 8;
627 var->blue.offset = 16;
628 var->blue.length = 8;
629 var->transp.offset = 0;
630 var->transp.length = 0;
631}
632
633/**
634 * ffb_setcolreg - Optional function. Sets a color register.
635 * @regno: boolean, 0 copy local, 1 get_user() function
636 * @red: frame buffer colormap structure
637 * @green: The green value which can be up to 16 bits wide
638 * @blue: The blue value which can be up to 16 bits wide.
639 * @transp: If supported the alpha value which can be up to 16 bits wide.
640 * @info: frame buffer info structure
641 */
642static int ffb_setcolreg(unsigned regno,
643 unsigned red, unsigned green, unsigned blue,
644 unsigned transp, struct fb_info *info)
645{
646 u32 value;
647
648 if (regno >= 256)
649 return 1;
650
651 red >>= 8;
652 green >>= 8;
653 blue >>= 8;
654
655 value = (blue << 16) | (green << 8) | red;
656 ((u32 *)info->pseudo_palette)[regno] = value;
657
658 return 0;
659}
660
661/**
662 * ffb_blank - Optional function. Blanks the display.
663 * @blank_mode: the blank mode we want.
664 * @info: frame buffer structure that represents a single frame buffer
665 */
666static int
667ffb_blank(int blank, struct fb_info *info)
668{
669 struct ffb_par *par = (struct ffb_par *) info->par;
670 struct ffb_dac *dac = par->dac;
671 unsigned long flags;
672 u32 tmp;
673
674 spin_lock_irqsave(&par->lock, flags);
675
676 FFBWait(par);
677
678 switch (blank) {
679 case FB_BLANK_UNBLANK: /* Unblanking */
680 upa_writel(0x6000, &dac->type);
681 tmp = (upa_readl(&dac->value) | 0x1);
682 upa_writel(0x6000, &dac->type);
683 upa_writel(tmp, &dac->value);
684 par->flags &= ~FFB_FLAG_BLANKED;
685 break;
686
687 case FB_BLANK_NORMAL: /* Normal blanking */
688 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
689 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
690 case FB_BLANK_POWERDOWN: /* Poweroff */
691 upa_writel(0x6000, &dac->type);
692 tmp = (upa_readl(&dac->value) & ~0x1);
693 upa_writel(0x6000, &dac->type);
694 upa_writel(tmp, &dac->value);
695 par->flags |= FFB_FLAG_BLANKED;
696 break;
697 }
698
699 spin_unlock_irqrestore(&par->lock, flags);
700
701 return 0;
702}
703
704static struct sbus_mmap_map ffb_mmap_map[] = {
705 {
706 .voff = FFB_SFB8R_VOFF,
707 .poff = FFB_SFB8R_POFF,
708 .size = 0x0400000
709 },
710 {
711 .voff = FFB_SFB8G_VOFF,
712 .poff = FFB_SFB8G_POFF,
713 .size = 0x0400000
714 },
715 {
716 .voff = FFB_SFB8B_VOFF,
717 .poff = FFB_SFB8B_POFF,
718 .size = 0x0400000
719 },
720 {
721 .voff = FFB_SFB8X_VOFF,
722 .poff = FFB_SFB8X_POFF,
723 .size = 0x0400000
724 },
725 {
726 .voff = FFB_SFB32_VOFF,
727 .poff = FFB_SFB32_POFF,
728 .size = 0x1000000
729 },
730 {
731 .voff = FFB_SFB64_VOFF,
732 .poff = FFB_SFB64_POFF,
733 .size = 0x2000000
734 },
735 {
736 .voff = FFB_FBC_REGS_VOFF,
737 .poff = FFB_FBC_REGS_POFF,
738 .size = 0x0002000
739 },
740 {
741 .voff = FFB_BM_FBC_REGS_VOFF,
742 .poff = FFB_BM_FBC_REGS_POFF,
743 .size = 0x0002000
744 },
745 {
746 .voff = FFB_DFB8R_VOFF,
747 .poff = FFB_DFB8R_POFF,
748 .size = 0x0400000
749 },
750 {
751 .voff = FFB_DFB8G_VOFF,
752 .poff = FFB_DFB8G_POFF,
753 .size = 0x0400000
754 },
755 {
756 .voff = FFB_DFB8B_VOFF,
757 .poff = FFB_DFB8B_POFF,
758 .size = 0x0400000
759 },
760 {
761 .voff = FFB_DFB8X_VOFF,
762 .poff = FFB_DFB8X_POFF,
763 .size = 0x0400000
764 },
765 {
766 .voff = FFB_DFB24_VOFF,
767 .poff = FFB_DFB24_POFF,
768 .size = 0x1000000
769 },
770 {
771 .voff = FFB_DFB32_VOFF,
772 .poff = FFB_DFB32_POFF,
773 .size = 0x1000000
774 },
775 {
776 .voff = FFB_FBC_KREGS_VOFF,
777 .poff = FFB_FBC_KREGS_POFF,
778 .size = 0x0002000
779 },
780 {
781 .voff = FFB_DAC_VOFF,
782 .poff = FFB_DAC_POFF,
783 .size = 0x0002000
784 },
785 {
786 .voff = FFB_PROM_VOFF,
787 .poff = FFB_PROM_POFF,
788 .size = 0x0010000
789 },
790 {
791 .voff = FFB_EXP_VOFF,
792 .poff = FFB_EXP_POFF,
793 .size = 0x0002000
794 },
795 {
796 .voff = FFB_DFB422A_VOFF,
797 .poff = FFB_DFB422A_POFF,
798 .size = 0x0800000
799 },
800 {
801 .voff = FFB_DFB422AD_VOFF,
802 .poff = FFB_DFB422AD_POFF,
803 .size = 0x0800000
804 },
805 {
806 .voff = FFB_DFB24B_VOFF,
807 .poff = FFB_DFB24B_POFF,
808 .size = 0x1000000
809 },
810 {
811 .voff = FFB_DFB422B_VOFF,
812 .poff = FFB_DFB422B_POFF,
813 .size = 0x0800000
814 },
815 {
816 .voff = FFB_DFB422BD_VOFF,
817 .poff = FFB_DFB422BD_POFF,
818 .size = 0x0800000
819 },
820 {
821 .voff = FFB_SFB16Z_VOFF,
822 .poff = FFB_SFB16Z_POFF,
823 .size = 0x0800000
824 },
825 {
826 .voff = FFB_SFB8Z_VOFF,
827 .poff = FFB_SFB8Z_POFF,
828 .size = 0x0800000
829 },
830 {
831 .voff = FFB_SFB422_VOFF,
832 .poff = FFB_SFB422_POFF,
833 .size = 0x0800000
834 },
835 {
836 .voff = FFB_SFB422D_VOFF,
837 .poff = FFB_SFB422D_POFF,
838 .size = 0x0800000
839 },
840 { .size = 0 }
841};
842
843static int ffb_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
844{
845 struct ffb_par *par = (struct ffb_par *)info->par;
846
847 return sbusfb_mmap_helper(ffb_mmap_map,
848 par->physbase, par->fbsize,
849 0, vma);
850}
851
852static int ffb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
853 unsigned long arg, struct fb_info *info)
854{
855 struct ffb_par *par = (struct ffb_par *) info->par;
856
857 return sbusfb_ioctl_helper(cmd, arg, info,
858 FBTYPE_CREATOR, 24, par->fbsize);
859}
860
861/*
862 * Initialisation
863 */
864
865static void
866ffb_init_fix(struct fb_info *info)
867{
868 struct ffb_par *par = (struct ffb_par *)info->par;
869 const char *ffb_type_name;
870
871 if (!(par->flags & FFB_FLAG_AFB)) {
872 if ((par->board_type & 0x7) == 0x3)
873 ffb_type_name = "Creator 3D";
874 else
875 ffb_type_name = "Creator";
876 } else
877 ffb_type_name = "Elite 3D";
878
879 strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
880
881 info->fix.type = FB_TYPE_PACKED_PIXELS;
882 info->fix.visual = FB_VISUAL_TRUECOLOR;
883
884 /* Framebuffer length is the same regardless of resolution. */
885 info->fix.line_length = 8192;
886
887 info->fix.accel = FB_ACCEL_SUN_CREATOR;
888}
889
890static int ffb_apply_upa_parent_ranges(int parent,
891 struct linux_prom64_registers *regs)
892{
893 struct linux_prom64_ranges ranges[PROMREG_MAX];
894 char name[128];
895 int len, i;
896
897 prom_getproperty(parent, "name", name, sizeof(name));
898 if (strcmp(name, "upa") != 0)
899 return 0;
900
901 len = prom_getproperty(parent, "ranges", (void *) ranges, sizeof(ranges));
902 if (len <= 0)
903 return 1;
904
905 len /= sizeof(struct linux_prom64_ranges);
906 for (i = 0; i < len; i++) {
907 struct linux_prom64_ranges *rng = &ranges[i];
908 u64 phys_addr = regs->phys_addr;
909
910 if (phys_addr >= rng->ot_child_base &&
911 phys_addr < (rng->ot_child_base + rng->or_size)) {
912 regs->phys_addr -= rng->ot_child_base;
913 regs->phys_addr += rng->ot_parent_base;
914 return 0;
915 }
916 }
917
918 return 1;
919}
920
921struct all_info {
922 struct fb_info info;
923 struct ffb_par par;
924 u32 pseudo_palette[256];
925 struct list_head list;
926};
927static LIST_HEAD(ffb_list);
928
929static void ffb_init_one(int node, int parent)
930{
931 struct linux_prom64_registers regs[2*PROMREG_MAX];
932 struct ffb_fbc *fbc;
933 struct ffb_dac *dac;
934 struct all_info *all;
935
936 if (prom_getproperty(node, "reg", (void *) regs, sizeof(regs)) <= 0) {
937 printk("ffb: Cannot get reg device node property.\n");
938 return;
939 }
940
941 if (ffb_apply_upa_parent_ranges(parent, &regs[0])) {
942 printk("ffb: Cannot apply parent ranges to regs.\n");
943 return;
944 }
945
946 all = kmalloc(sizeof(*all), GFP_KERNEL);
947 if (!all) {
948 printk(KERN_ERR "ffb: Cannot allocate memory.\n");
949 return;
950 }
951 memset(all, 0, sizeof(*all));
952
953 INIT_LIST_HEAD(&all->list);
954
955 spin_lock_init(&all->par.lock);
956 all->par.fbc = (struct ffb_fbc *)(regs[0].phys_addr + FFB_FBC_REGS_POFF);
957 all->par.dac = (struct ffb_dac *)(regs[0].phys_addr + FFB_DAC_POFF);
958 all->par.rop_cache = FFB_ROP_NEW;
959 all->par.physbase = regs[0].phys_addr;
960 all->par.prom_node = node;
961 all->par.prom_parent_node = parent;
962
963 /* Don't mention copyarea, so SCROLL_REDRAW is always
964 * used. It is the fastest on this chip.
965 */
966 all->info.flags = (FBINFO_DEFAULT |
967 /* FBINFO_HWACCEL_COPYAREA | */
968 FBINFO_HWACCEL_FILLRECT |
969 FBINFO_HWACCEL_IMAGEBLIT);
970 all->info.fbops = &ffb_ops;
971 all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
972 all->info.par = &all->par;
973 all->info.pseudo_palette = all->pseudo_palette;
974
975 sbusfb_fill_var(&all->info.var, all->par.prom_node, 32);
976 all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
977 all->info.var.yres *
978 4);
979 ffb_fixup_var_rgb(&all->info.var);
980
981 all->info.var.accel_flags = FB_ACCELF_TEXT;
982
983 prom_getstring(node, "name", all->par.name, sizeof(all->par.name));
984 if (!strcmp(all->par.name, "SUNW,afb"))
985 all->par.flags |= FFB_FLAG_AFB;
986
987 all->par.board_type = prom_getintdefault(node, "board_type", 0);
988
989 fbc = all->par.fbc;
990 if((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
991 upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
992
993 ffb_switch_from_graph(&all->par);
994
995 dac = all->par.dac;
996 upa_writel(0x8000, &dac->type);
997 all->par.dac_rev = upa_readl(&dac->value) >> 0x1c;
998
999 /* Elite3D has different DAC revision numbering, and no DAC revisions
1000 * have the reversed meaning of cursor enable.
1001 */
1002 if (all->par.flags & FFB_FLAG_AFB)
1003 all->par.dac_rev = 10;
1004
1005 /* Unblank it just to be sure. When there are multiple
1006 * FFB/AFB cards in the system, or it is not the OBP
1007 * chosen console, it will have video outputs off in
1008 * the DAC.
1009 */
1010 ffb_blank(0, &all->info);
1011
1012 if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
1013 printk(KERN_ERR "ffb: Could not allocate color map.\n");
1014 kfree(all);
1015 return;
1016 }
1017
1018 ffb_init_fix(&all->info);
1019
1020 if (register_framebuffer(&all->info) < 0) {
1021 printk(KERN_ERR "ffb: Could not register framebuffer.\n");
1022 fb_dealloc_cmap(&all->info.cmap);
1023 kfree(all);
1024 return;
1025 }
1026
1027 list_add(&all->list, &ffb_list);
1028
1029 printk("ffb: %s at %016lx type %d DAC %d\n",
1030 ((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
1031 regs[0].phys_addr, all->par.board_type, all->par.dac_rev);
1032}
1033
1034static void ffb_scan_siblings(int root)
1035{
1036 int node, child;
1037
1038 child = prom_getchild(root);
1039 for (node = prom_searchsiblings(child, "SUNW,ffb"); node;
1040 node = prom_searchsiblings(prom_getsibling(node), "SUNW,ffb"))
1041 ffb_init_one(node, root);
1042 for (node = prom_searchsiblings(child, "SUNW,afb"); node;
1043 node = prom_searchsiblings(prom_getsibling(node), "SUNW,afb"))
1044 ffb_init_one(node, root);
1045}
1046
1047int __init ffb_init(void)
1048{
1049 int root;
1050
1051 if (fb_get_options("ffb", NULL))
1052 return -ENODEV;
1053
1054 ffb_scan_siblings(prom_root_node);
1055
1056 root = prom_getchild(prom_root_node);
1057 for (root = prom_searchsiblings(root, "upa"); root;
1058 root = prom_searchsiblings(prom_getsibling(root), "upa"))
1059 ffb_scan_siblings(root);
1060
1061 return 0;
1062}
1063
1064void __exit ffb_exit(void)
1065{
1066 struct list_head *pos, *tmp;
1067
1068 list_for_each_safe(pos, tmp, &ffb_list) {
1069 struct all_info *all = list_entry(pos, typeof(*all), list);
1070
1071 unregister_framebuffer(&all->info);
1072 fb_dealloc_cmap(&all->info.cmap);
1073 kfree(all);
1074 }
1075}
1076
1077int __init
1078ffb_setup(char *arg)
1079{
1080 /* No cmdline options yet... */
1081 return 0;
1082}
1083
1084module_init(ffb_init);
1085
1086#ifdef MODULE
1087module_exit(ffb_exit);
1088#endif
1089
1090MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
1091MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
1092MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-16 11:06:42 -0500