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Linux-2.6.12-rc2
[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / video / virgefb.c
1 /*
2 * linux/drivers/video/virgefb.c -- CyberVision64/3D frame buffer device
3 *
4 * Copyright (C) 1997 André Heynatz
5 *
6 *
7 * This file is based on the CyberVision frame buffer device (cyberfb.c):
8 *
9 * Copyright (C) 1996 Martin Apel
10 * Geert Uytterhoeven
11 *
12 * Zorro II additions :
13 *
14 * Copyright (C) 1998-2000 Christian T. Steigies
15 *
16 * Initialization additions :
17 *
18 * Copyright (C) 1998-2000 Ken Tyler
19 *
20 * Parts of the Initialization code are based on Cyberfb.c by Allan Bair,
21 * and on the NetBSD CyberVision64 frame buffer driver by Michael Teske who gave
22 * permission for its use.
23 *
24 * Many thanks to Frank Mariak for his assistance with ZORRO 2 access and other
25 * mysteries.
26 *
27 *
28 *
29 * This file is subject to the terms and conditions of the GNU General Public
30 * License. See the file COPYING in the main directory of this archive
31 * for more details.
32 */
33
34 #undef VIRGEFBDEBUG
35 #undef VIRGEFBDUMP
36
37 #include <linux/module.h>
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/string.h>
41 #include <linux/mm.h>
42 #include <linux/tty.h>
43 #include <linux/slab.h>
44 #include <linux/delay.h>
45 #include <linux/zorro.h>
46 #include <linux/fb.h>
47 #include <linux/init.h>
48 #include <asm/uaccess.h>
49 #include <asm/system.h>
50 #include <asm/amigahw.h>
51 #include <asm/io.h>
52 #include <asm/irq.h>
53 #include <video/fbcon.h>
54 #include <video/fbcon-cfb8.h>
55 #include <video/fbcon-cfb16.h>
56 #include <video/fbcon-cfb32.h>
57
58 #include "virgefb.h"
59
60 #ifdef VIRGEFBDEBUG
61 #define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
62 #else
63 #define DPRINTK(fmt, args...)
64 #endif
65
66 #ifdef VIRGEFBDUMP
67 static void cv64_dump(void);
68 #define DUMP cv64_dump()
69 #else
70 #define DUMP
71 #endif
72
73 /*
74 * Macros for register access and zorro control
75 */
76
77 static inline void mb_inline(void) { mb(); } /* for use in comma expressions */
78
79 /* Set zorro 2 map */
80
81 #define SelectIO \
82 mb(); \
83 if (on_zorro2) { \
84 (*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x01); \
85 mb(); \
86 }
87
88 #define SelectMMIO \
89 mb(); \
90 if (on_zorro2) { \
91 (*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x02); \
92 mb(); \
93 }
94
95 #define SelectCFG \
96 mb(); \
97 if (on_zorro2) { \
98 (*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x03); \
99 mb(); \
100 }
101
102 /* Set pass through, 0 = amiga, !=0 = cv64/3d */
103
104 #define SetVSwitch(x) \
105 mb(); \
106 (*(volatile u16 *)((u8 *)(vcode_switch_base)) = \
107 (u16)(x ? 0 : 1)); \
108 mb();
109
110 /* Zorro2 endian 'aperture' */
111
112 #define ENDIAN_BYTE 2
113 #define ENDIAN_WORD 1
114 #define ENDIAN_LONG 0
115
116 #define Select_Zorro2_FrameBuffer(x) \
117 do { \
118 if (on_zorro2) { \
119 mb(); \
120 (*(volatile u16 *)((u8 *)(vcode_switch_base + 0x08)) = \
121 (x * 0x40)); \
122 mb(); \
123 } \
124 } while (0)
125
126 /* SetPortVal - only used for interrupt enable (not yet implemented) */
127
128 #if 0
129 #define SetPortVal(x) \
130 mb(); \
131 (*(volatile u16 *)((u8 *)(vcode_switch_base + 0x0c)) = \
132 (u16)x); \
133 mb();
134 #endif
135
136 /* IO access */
137
138 #define byte_access_io(x) (((x) & 0x3ffc) | (((x) & 3)^3) | (((x) & 3) <<14))
139 #define byte_access_mmio(x) (((x) & 0xfffc) | (((x) & 3)^3))
140
141 /* Write 8 bit VGA register - used once for chip wakeup */
142
143 #define wb_vgaio(reg, dat) \
144 SelectIO; \
145 (*(volatile u8 *)(vgaio_regs + ((u32)byte_access_io(reg) & 0xffff)) = \
146 (dat & 0xff)); \
147 SelectMMIO;
148
149 /* Read 8 bit VGA register - only used in dump (SelectIO not needed on read ?) */
150
151 #ifdef VIRGEFBDUMP
152 #define rb_vgaio(reg) \
153 ({ \
154 u8 __zzyzx; \
155 SelectIO; \
156 __zzyzx = (*(volatile u8 *)((vgaio_regs)+(u32)byte_access_io(reg))); \
157 SelectMMIO; \
158 __zzyzx; \
159 })
160 #endif
161
162 /* MMIO access */
163
164 /* Read 8 bit MMIO register */
165
166 #define rb_mmio(reg) \
167 (mb_inline(), \
168 (*(volatile u8 *)(mmio_regs + 0x8000 + (u32)byte_access_mmio(reg))))
169
170 /* Write 8 bit MMIO register */
171
172 #define wb_mmio(reg,dat) \
173 mb(); \
174 (*(volatile u8 *)(mmio_regs + 0x8000 + (byte_access_mmio((reg) & 0xffff))) = \
175 (dat & 0xff)); \
176 mb();
177
178 /* Read 32 bit MMIO register */
179
180 #define rl_mmio(reg) \
181 (mb_inline(), \
182 (*((volatile u32 *)((u8 *)((mmio_regs + (on_zorro2 ? 0x20000 : 0)) + (reg))))))
183
184 /* Write 32 bit MMIO register */
185
186 #define wl_mmio(reg,dat) \
187 mb(); \
188 ((*(volatile u32 *)((u8 *)((mmio_regs + (on_zorro2 ? 0x20000 : 0)) + (reg)))) = \
189 (u32)(dat)); \
190 mb();
191
192 /* Write to virge graphics register */
193
194 #define wgfx(reg, dat) do { wb_mmio(GCT_ADDRESS, (reg)); wb_mmio(GCT_ADDRESS_W, (dat)); } while (0)
195
196 /* Write to virge sequencer register */
197
198 #define wseq(reg, dat) do { wb_mmio(SEQ_ADDRESS, (reg)); wb_mmio(SEQ_ADDRESS_W, (dat)); } while (0)
199
200 /* Write to virge CRT controller register */
201
202 #define wcrt(reg, dat) do { wb_mmio(CRT_ADDRESS, (reg)); wb_mmio(CRT_ADDRESS_W, (dat)); } while (0)
203
204 /* Write to virge attribute register */
205
206 #define watr(reg, dat) \
207 do { \
208 volatile unsigned char watr_tmp; \
209 watr_tmp = rb_mmio(ACT_ADDRESS_RESET); \
210 wb_mmio(ACT_ADDRESS_W, (reg)); \
211 wb_mmio(ACT_ADDRESS_W, (dat)); \
212 udelay(10); \
213 } while (0)
214
215 /* end of macros */
216
217 struct virgefb_par {
218 struct fb_var_screeninfo var;
219 __u32 type;
220 __u32 type_aux;
221 __u32 visual;
222 __u32 line_length;
223 };
224
225 static struct virgefb_par current_par;
226
227 static int current_par_valid = 0;
228
229 static struct display disp;
230 static struct fb_info fb_info;
231
232 static union {
233 #ifdef FBCON_HAS_CFB16
234 u16 cfb16[16];
235 #endif
236 #ifdef FBCON_HAS_CFB32
237 u32 cfb32[16];
238 #endif
239 } fbcon_cmap;
240
241 /*
242 * Switch for Chipset Independency
243 */
244
245 static struct fb_hwswitch {
246
247 /* Initialisation */
248
249 int (*init)(void);
250
251 /* Display Control */
252
253 int (*encode_fix)(struct fb_fix_screeninfo *fix, struct virgefb_par *par);
254 int (*decode_var)(struct fb_var_screeninfo *var, struct virgefb_par *par);
255 int (*encode_var)(struct fb_var_screeninfo *var, struct virgefb_par *par);
256 int (*getcolreg)(u_int regno, u_int *red, u_int *green, u_int *blue,
257 u_int *transp, struct fb_info *info);
258 void (*blank)(int blank);
259 } *fbhw;
260
261 static unsigned char blit_maybe_busy = 0;
262
263 /*
264 * Frame Buffer Name
265 */
266
267 static char virgefb_name[16] = "CyberVision/3D";
268
269 /*
270 * CyberVision64/3d Graphics Board
271 */
272
273 static unsigned char virgefb_colour_table [256][3];
274 static unsigned long v_ram;
275 static unsigned long v_ram_size;
276 static volatile unsigned char *mmio_regs;
277 static volatile unsigned char *vgaio_regs;
278
279 static unsigned long v_ram_phys;
280 static unsigned long mmio_regs_phys;
281 static unsigned long vcode_switch_base;
282 static unsigned char on_zorro2;
283
284 /*
285 * Offsets from start of video ram to appropriate ZIII aperture
286 */
287
288 #ifdef FBCON_HAS_CFB8
289 #define CYBMEM_OFFSET_8 0x800000 /* BGRX */
290 #endif
291 #ifdef FBCON_HAS_CFB16
292 #define CYBMEM_OFFSET_16 0x400000 /* GBXR */
293 #endif
294 #ifdef FBCON_HAS_CFB32
295 #define CYBMEM_OFFSET_32 0x000000 /* XRGB */
296 #endif
297
298 /*
299 * MEMCLOCK was 32MHz, 64MHz works, 72MHz doesn't (on my board)
300 */
301
302 #define MEMCLOCK 50000000
303
304 /*
305 * Predefined Video Modes
306 */
307
308 static struct {
309 const char *name;
310 struct fb_var_screeninfo var;
311 } virgefb_predefined[] __initdata = {
312 #ifdef FBCON_HAS_CFB8
313 {
314 "640x480-8", { /* Cybervision 8 bpp */
315 640, 480, 640, 480, 0, 0, 8, 0,
316 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
317 0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 160, 136, 82, 61, 88, 2,
318 0, FB_VMODE_NONINTERLACED
319 }
320 }, {
321 "768x576-8", { /* Cybervision 8 bpp */
322 768, 576, 768, 576, 0, 0, 8, 0,
323 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
324 0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
325 0, FB_VMODE_NONINTERLACED
326 }
327 }, {
328 "800x600-8", { /* Cybervision 8 bpp */
329 800, 600, 800, 600, 0, 0, 8, 0,
330 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
331 0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
332 0, FB_VMODE_NONINTERLACED
333 }
334 }, {
335 #if 0
336 "1024x768-8", { /* Cybervision 8 bpp */
337 1024, 768, 1024, 768, 0, 0, 8, 0,
338 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
339 0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
340 0, FB_VMODE_NONINTERLACED
341 }
342 #else
343 "1024x768-8", {
344 1024, 768, 1024, 768, 0, 0, 8, 0,
345 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
346 #if 0
347 0, 0, -1, -1, FB_ACCELF_TEXT, 12500, 184, 40, 40, 2, 96, 1,
348 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
349 }
350 #else
351 0, 0, -1, -1, FB_ACCELF_TEXT, 12699, 176, 16, 28, 1, 96, 3,
352 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
353 }
354 #endif
355 #endif
356 }, {
357 "1152x886-8", { /* Cybervision 8 bpp */
358 1152, 886, 1152, 886, 0, 0, 8, 0,
359 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
360 0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
361 0, FB_VMODE_NONINTERLACED
362 }
363 }, {
364 "1280x1024-8", { /* Cybervision 8 bpp */
365 1280, 1024, 1280, 1024, 0, 0, 8, 0,
366 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
367 #if 0
368 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
369 }
370 #else
371 0, 0, -1, -1, FB_ACCELF_TEXT, 7414, 232, 64, 38, 1, 112, 3,
372 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
373 }
374 #endif
375 }, {
376 "1600x1200-8", { /* Cybervision 8 bpp */
377 1600, 1200, 1600, 1200, 0, 0, 8, 0,
378 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
379 #if 0
380 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
381 0, FB_VMODE_NONINTERLACED
382 }
383 #else
384 0, 0, -1, -1, FB_ACCELF_TEXT, 6411, 256, 32, 52, 10, 160, 8,
385 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
386 }
387 #endif
388 },
389 #endif
390
391 #ifdef FBCON_HAS_CFB16
392 {
393 "640x480-16", { /* Cybervision 16 bpp */
394 640, 480, 640, 480, 0, 0, 16, 0,
395 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
396 0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 152, 144, 82, 61, 88, 2,
397 0, FB_VMODE_NONINTERLACED
398 }
399 }, {
400 "768x576-16", { /* Cybervision 16 bpp */
401 768, 576, 768, 576, 0, 0, 16, 0,
402 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
403 0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
404 0, FB_VMODE_NONINTERLACED
405 }
406 }, {
407 "800x600-16", { /* Cybervision 16 bpp */
408 800, 600, 800, 600, 0, 0, 16, 0,
409 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
410 0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
411 0, FB_VMODE_NONINTERLACED
412 }
413 }, {
414 #if 0
415 "1024x768-16", { /* Cybervision 16 bpp */
416 1024, 768, 1024, 768, 0, 0, 16, 0,
417 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
418 0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
419 0, FB_VMODE_NONINTERLACED
420 }
421 #else
422 "1024x768-16", {
423 1024, 768, 1024, 768, 0, 0, 16, 0,
424 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
425 0, 0, -1, -1, FB_ACCELF_TEXT, 12500, 184, 40, 40, 2, 96, 1,
426 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
427 }
428 #endif
429 }, {
430 "1152x886-16", { /* Cybervision 16 bpp */
431 1152, 886, 1152, 886, 0, 0, 16, 0,
432 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
433 0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
434 0, FB_VMODE_NONINTERLACED
435 }
436 }, {
437 "1280x1024-16", { /* Cybervision 16 bpp */
438 1280, 1024, 1280, 1024, 0, 0, 16, 0,
439 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
440 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
441 0, FB_VMODE_NONINTERLACED
442 }
443 }, {
444 "1600x1200-16", { /* Cybervision 16 bpp */
445 1600, 1200, 1600, 1200, 0, 0, 16, 0,
446 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
447 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
448 0, FB_VMODE_NONINTERLACED
449 }
450 },
451 #endif
452
453 #ifdef FBCON_HAS_CFB32
454 {
455 "640x480-32", { /* Cybervision 32 bpp */
456 640, 480, 640, 480, 0, 0, 32, 0,
457 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
458 0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 160, 136, 82, 61, 88, 2,
459 0, FB_VMODE_NONINTERLACED
460 }
461 }, {
462 "768x576-32", { /* Cybervision 32 bpp */
463 768, 576, 768, 576, 0, 0, 32, 0,
464 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
465 0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
466 0, FB_VMODE_NONINTERLACED
467 }
468 }, {
469 "800x600-32", { /* Cybervision 32 bpp */
470 800, 600, 800, 600, 0, 0, 32, 0,
471 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
472 0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
473 0, FB_VMODE_NONINTERLACED
474 }
475 }, {
476 "1024x768-32", { /* Cybervision 32 bpp */
477 1024, 768, 1024, 768, 0, 0, 32, 0,
478 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
479 0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
480 0, FB_VMODE_NONINTERLACED
481 }
482 }, {
483 "1152x886-32", { /* Cybervision 32 bpp */
484 1152, 886, 1152, 886, 0, 0, 32, 0,
485 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
486 0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
487 0, FB_VMODE_NONINTERLACED
488 }
489 }, {
490 "1280x1024-32", { /* Cybervision 32 bpp */
491 1280, 1024, 1280, 1024, 0, 0, 32, 0,
492 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
493 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
494 0, FB_VMODE_NONINTERLACED
495 }
496 }, {
497 "1600x1200-32", { /* Cybervision 32 bpp */
498 1600, 1200, 1600, 1200, 0, 0, 32, 0,
499 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
500 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
501 0, FB_VMODE_NONINTERLACED
502 }
503 },
504 #endif
505
506 /* interlaced modes */
507
508 #ifdef FBCON_HAS_CFB8
509 {
510 "1024x768-8i", { /* Cybervision 8 bpp */
511 1024, 768, 1024, 768, 0, 0, 8, 0,
512 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
513 0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
514 0, FB_VMODE_INTERLACED
515 }
516 }, {
517 "1280x1024-8i", { /* Cybervision 8 bpp */
518 1280, 1024, 1280, 1024, 0, 0, 8, 0,
519 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
520 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
521 0, FB_VMODE_INTERLACED
522 }
523 }, {
524 "1600x1200-8i", { /* Cybervision 8 bpp */
525 1600, 1200, 1600, 1200, 0, 0, 8, 0,
526 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
527 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
528 0, FB_VMODE_INTERLACED
529 }
530 },
531 #endif
532
533 #ifdef FBCON_HAS_CFB16
534 {
535 "1024x768-16i", { /* Cybervision 16 bpp */
536 1024, 768, 1024, 768, 0, 0, 16, 0,
537 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
538 0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
539 0, FB_VMODE_INTERLACED
540 }
541 }, {
542 "1280x1024-16i", { /* Cybervision 16 bpp */
543 1280, 1024, 1280, 1024, 0, 0, 16, 0,
544 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
545 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
546 0, FB_VMODE_INTERLACED
547 }
548 }, {
549 "1600x1200-16i", { /* Cybervision 16 bpp */
550 1600, 1200, 1600, 1200, 0, 0, 16, 0,
551 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
552 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
553 0, FB_VMODE_INTERLACED
554 }
555 },
556 #endif
557
558 #ifdef FBCON_HAS_CFB32
559 {
560 "1024x768-32i", { /* Cybervision 32 bpp */
561 1024, 768, 1024, 768, 0, 0, 32, 0,
562 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
563 0, 0, -1, -1, FB_ACCELF_TEXT, 22222, 216, 144, 39, 2, 72, 1,
564 0, FB_VMODE_INTERLACED
565 }
566 }, {
567 "1280x1024-32i", { /* Cybervision 32 bpp */
568 1280, 1024, 1280, 1024, 0, 0, 32, 0,
569 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {23, 0, 0},
570 0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
571 0, FB_VMODE_INTERLACED
572 }
573 }, {
574 "1600x1200-32i", { /* Cybervision 32 bpp */
575 1600, 1200, 1600, 1200, 0, 0, 32, 0,
576 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
577 0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
578 0, FB_VMODE_INTERLACED
579 }
580 },
581 #endif
582
583 /* doublescan modes */
584
585 #ifdef FBCON_HAS_CFB8
586 {
587 "320x240-8d", { /* Cybervision 8 bpp */
588 320, 240, 320, 240, 0, 0, 8, 0,
589 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
590 0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
591 0, FB_VMODE_DOUBLE
592 }
593 },
594 #endif
595
596 #ifdef FBCON_HAS_CFB16
597 {
598 "320x240-16d", { /* Cybervision 16 bpp */
599 320, 240, 320, 240, 0, 0, 16, 0,
600 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
601 0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
602 0, FB_VMODE_DOUBLE
603 }
604 },
605 #endif
606
607 #ifdef FBCON_HAS_CFB32
608 {
609 "320x240-32d", { /* Cybervision 32 bpp */
610 320, 240, 320, 240, 0, 0, 32, 0,
611 {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
612 0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
613 0, FB_VMODE_DOUBLE
614 }
615 },
616 #endif
617 };
618
619 #define arraysize(x) (sizeof(x)/sizeof(*(x)))
620 #define NUM_TOTAL_MODES arraysize(virgefb_predefined)
621
622 /*
623 * Default to 800x600 for video=virge8:, virge16: or virge32:
624 */
625
626 #ifdef FBCON_HAS_CFB8
627 #define VIRGE8_DEFMODE (2)
628 #endif
629
630 #ifdef FBCON_HAS_CFB16
631 #define VIRGE16_DEFMODE (9)
632 #endif
633
634 #ifdef FBCON_HAS_CFB32
635 #define VIRGE32_DEFMODE (16)
636 #endif
637
638 static struct fb_var_screeninfo virgefb_default;
639 static int virgefb_inverse = 0;
640
641 /*
642 * Interface used by the world
643 */
644
645 int virgefb_setup(char*);
646 static int virgefb_get_fix(struct fb_fix_screeninfo *fix, int con,
647 struct fb_info *info);
648 static int virgefb_get_var(struct fb_var_screeninfo *var, int con,
649 struct fb_info *info);
650 static int virgefb_set_var(struct fb_var_screeninfo *var, int con,
651 struct fb_info *info);
652 static int virgefb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
653 struct fb_info *info);
654 static int virgefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
655 u_int transp, struct fb_info *info);
656 static int virgefb_blank(int blank, struct fb_info *info);
657
658 /*
659 * Interface to the low level console driver
660 */
661
662 int virgefb_init(void);
663 static int virgefb_switch(int con, struct fb_info *info);
664 static int virgefb_updatevar(int con, struct fb_info *info);
665
666 /*
667 * Text console acceleration
668 */
669
670 #ifdef FBCON_HAS_CFB8
671 static struct display_switch fbcon_virge8;
672 #endif
673
674 #ifdef FBCON_HAS_CFB16
675 static struct display_switch fbcon_virge16;
676 #endif
677
678 #ifdef FBCON_HAS_CFB32
679 static struct display_switch fbcon_virge32;
680 #endif
681
682 /*
683 * Hardware Specific Routines
684 */
685
686 static int virge_init(void);
687 static int virgefb_encode_fix(struct fb_fix_screeninfo *fix,
688 struct virgefb_par *par);
689 static int virgefb_decode_var(struct fb_var_screeninfo *var,
690 struct virgefb_par *par);
691 static int virgefb_encode_var(struct fb_var_screeninfo *var,
692 struct virgefb_par *par);
693 static int virgefb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
694 u_int *transp, struct fb_info *info);
695 static void virgefb_gfx_on_off(int blank);
696 static inline void virgefb_wait_for_idle(void);
697 static void virgefb_BitBLT(u_short curx, u_short cury, u_short destx, u_short desty,
698 u_short width, u_short height, u_short stride, u_short depth);
699 static void virgefb_RectFill(u_short x, u_short y, u_short width, u_short height,
700 u_short color, u_short stride, u_short depth);
701
702 /*
703 * Internal routines
704 */
705
706 static void virgefb_get_par(struct virgefb_par *par);
707 static void virgefb_set_par(struct virgefb_par *par);
708 static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
709 static void virgefb_set_disp(int con, struct fb_info *info);
710 static int virgefb_get_video_mode(const char *name);
711 static void virgefb_set_video(struct fb_var_screeninfo *var);
712
713 /*
714 * Additions for Initialization
715 */
716
717 static void virgefb_load_video_mode(struct fb_var_screeninfo *video_mode);
718 static int cv3d_has_4mb(void);
719 static unsigned short virgefb_compute_clock(unsigned long freq);
720 static inline unsigned char rattr(short);
721 static inline unsigned char rseq(short);
722 static inline unsigned char rcrt(short);
723 static inline unsigned char rgfx(short);
724 static inline void gfx_on_off(int toggle);
725 static void virgefb_pci_init(void);
726
727 /* -------------------- Hardware specific routines ------------------------- */
728
729 /*
730 * Functions for register access
731 */
732
733 /* Read attribute controller register */
734
735 static inline unsigned char rattr(short idx)
736 {
737 volatile unsigned char rattr_tmp;
738
739 rattr_tmp = rb_mmio(ACT_ADDRESS_RESET);
740 wb_mmio(ACT_ADDRESS_W, idx);
741 return (rb_mmio(ACT_ADDRESS_R));
742 }
743
744 /* Read sequencer register */
745
746 static inline unsigned char rseq(short idx)
747 {
748 wb_mmio(SEQ_ADDRESS, idx);
749 return (rb_mmio(SEQ_ADDRESS_R));
750 }
751
752 /* Read CRT controller register */
753
754 static inline unsigned char rcrt(short idx)
755 {
756 wb_mmio(CRT_ADDRESS, idx);
757 return (rb_mmio(CRT_ADDRESS_R));
758 }
759
760 /* Read graphics controller register */
761
762 static inline unsigned char rgfx(short idx)
763 {
764 wb_mmio(GCT_ADDRESS, idx);
765 return (rb_mmio(GCT_ADDRESS_R));
766 }
767
768
769 /*
770 * Initialization
771 */
772
773 /* PCI init */
774
775 void virgefb_pci_init(void) {
776
777 DPRINTK("ENTER\n");
778
779 SelectCFG;
780
781 if (on_zorro2) {
782 *((short *)(vgaio_regs + 0x00000010)) = 0;
783 *((long *)(vgaio_regs + 0x00000004)) = 0x02000003;
784 } else {
785 *((short *)(vgaio_regs + 0x000e0010)) = 0;
786 *((long *)(vgaio_regs + 0x000e0004)) = 0x02000003;
787 }
788
789 /* SelectIO is in wb_vgaio macro */
790 wb_vgaio(SREG_VIDEO_SUBS_ENABLE, 0x01);
791 /* SelectMMIO is in wb_vgaio macro */
792
793 DPRINTK("EXIT\n");
794
795 return;
796 }
797
798 /*
799 * Initalize all mode independent regs, find mem size and clear mem
800 */
801
802 static int virge_init(void)
803 {
804 int i;
805 unsigned char tmp;
806
807 DPRINTK("ENTER\n");
808
809 virgefb_pci_init();
810
811 wb_mmio(GREG_MISC_OUTPUT_W, 0x07); /* colour, ram enable, clk sel */
812
813 wseq(SEQ_ID_UNLOCK_EXT, 0x06); /* unlock extensions */
814 tmp = rb_mmio(GREG_MISC_OUTPUT_R);
815 wcrt(CRT_ID_REGISTER_LOCK_1, 0x48); /* unlock CR2D to CR3F */
816
817 wcrt(CRT_ID_BACKWAD_COMP_1, 0x00); /* irq disable */
818
819 wcrt(CRT_ID_REGISTER_LOCK_2, 0xa5); /* unlock CR40 to CRFF and more */
820 wcrt(CRT_ID_REGISTER_LOCK,0x00); /* unlock h and v timing */
821 wcrt(CRT_ID_SYSTEM_CONFIG, 0x01); /* unlock enhanced programming registers */
822
823 wb_mmio(GREG_FEATURE_CONTROL_W, 0x00);
824
825 wcrt(CRT_ID_EXT_MISC_CNTL, 0x00); /* b2 = 0 to allow VDAC mmio access */
826 #if 0
827 /* write strap options ... ? */
828 wcrt(CRT_ID_CONFIG_1, 0x08);
829 wcrt(CRT_ID_CONFIG_2, 0xff); /* 0x0x2 bit needs to be set ?? */
830 wcrt(CRT_ID_CONFIG_3, 0x0f);
831 wcrt(CRT_ID_CONFIG_4, 0x1a);
832 #endif
833 wcrt(CRT_ID_EXT_MISC_CNTL_1, 0x82); /* PCI DE and software reset S3D engine */
834 /* EXT_MISC_CNTL_1, CR66 bit 0 should be the same as bit 0 MR_ADVANCED_FUNCTION_CONTROL - check */
835 wl_mmio(MR_ADVANCED_FUNCTION_CONTROL, 0x00000011); /* enhanced mode, linear addressing */
836
837 /* crtc registers */
838
839 wcrt(CRT_ID_PRESET_ROW_SCAN, 0x00);
840
841 /* Disable h/w cursor */
842
843 wcrt(CRT_ID_CURSOR_START, 0x00);
844 wcrt(CRT_ID_CURSOR_END, 0x00);
845 wcrt(CRT_ID_START_ADDR_HIGH, 0x00);
846 wcrt(CRT_ID_START_ADDR_LOW, 0x00);
847 wcrt(CRT_ID_CURSOR_LOC_HIGH, 0x00);
848 wcrt(CRT_ID_CURSOR_LOC_LOW, 0x00);
849 wcrt(CRT_ID_EXT_MODE, 0x00);
850 wcrt(CRT_ID_HWGC_MODE, 0x00);
851 wcrt(CRT_ID_HWGC_ORIGIN_X_HI, 0x00);
852 wcrt(CRT_ID_HWGC_ORIGIN_X_LO, 0x00);
853 wcrt(CRT_ID_HWGC_ORIGIN_Y_HI, 0x00);
854 wcrt(CRT_ID_HWGC_ORIGIN_Y_LO, 0x00);
855 i = rcrt(CRT_ID_HWGC_MODE);
856 wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
857 wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
858 wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
859 wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
860 wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
861 wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
862 wcrt(CRT_ID_HWGC_START_AD_HI, 0x00);
863 wcrt(CRT_ID_HWGC_START_AD_LO, 0x00);
864 wcrt(CRT_ID_HWGC_DSTART_X, 0x00);
865 wcrt(CRT_ID_HWGC_DSTART_Y, 0x00);
866
867 wcrt(CRT_ID_UNDERLINE_LOC, 0x00);
868
869 wcrt(CRT_ID_MODE_CONTROL, 0xe3);
870 wcrt(CRT_ID_BACKWAD_COMP_2, 0x22); /* blank bdr bit 5 blanking only on 8 bit */
871
872 wcrt(CRT_ID_EX_SYNC_1, 0x00);
873
874 /* memory */
875
876 wcrt(CRT_ID_EXT_SYS_CNTL_3, 0x00);
877 wcrt(CRT_ID_MEMORY_CONF, 0x08); /* config enhanced map */
878 wcrt(CRT_ID_EXT_MEM_CNTL_1, 0x08); /* MMIO Select (0x0c works as well)*/
879 wcrt(CRT_ID_EXT_MEM_CNTL_2, 0x02); /* why 02 big endian 00 works ? */
880 wcrt(CRT_ID_EXT_MEM_CNTL_4, 0x9f); /* config big endian - 0x00 ? */
881 wcrt(CRT_ID_LAW_POS_HI, 0x00);
882 wcrt(CRT_ID_LAW_POS_LO, 0x00);
883 wcrt(CRT_ID_EXT_MISC_CNTL_1, 0x81);
884 wcrt(CRT_ID_MISC_1, 0x90); /* must follow CRT_ID_EXT_MISC_CNTL_1 */
885 wcrt(CRT_ID_LAW_CNTL, 0x13); /* force 4 Meg for test */
886 if (cv3d_has_4mb()) {
887 v_ram_size = 0x00400000;
888 wcrt(CRT_ID_LAW_CNTL, 0x13); /* 4 MB */
889 } else {
890 v_ram_size = 0x00200000;
891 wcrt(CRT_ID_LAW_CNTL, 0x12); /* 2 MB */
892 }
893
894 if (on_zorro2)
895 v_ram_size -= 0x60000; /* we need some space for the registers */
896
897 wcrt(CRT_ID_EXT_SYS_CNTL_4, 0x00);
898 wcrt(CRT_ID_EXT_DAC_CNTL, 0x00); /* 0x10 for X11 cursor mode */
899
900 /* sequencer registers */
901
902 wseq(SEQ_ID_CLOCKING_MODE, 0x01); /* 8 dot clock */
903 wseq(SEQ_ID_MAP_MASK, 0xff);
904 wseq(SEQ_ID_CHAR_MAP_SELECT, 0x00);
905 wseq(SEQ_ID_MEMORY_MODE, 0x02);
906 wseq(SEQ_ID_RAMDAC_CNTL, 0x00);
907 wseq(SEQ_ID_SIGNAL_SELECT, 0x00);
908 wseq(SEQ_ID_EXT_SEQ_REG9, 0x00); /* MMIO and PIO reg access enabled */
909 wseq(SEQ_ID_EXT_MISC_SEQ, 0x00);
910 wseq(SEQ_ID_CLKSYN_CNTL_1, 0x00);
911 wseq(SEQ_ID_EXT_SEQ, 0x00);
912
913 /* graphic registers */
914
915 wgfx(GCT_ID_SET_RESET, 0x00);
916 wgfx(GCT_ID_ENABLE_SET_RESET, 0x00);
917 wgfx(GCT_ID_COLOR_COMPARE, 0x00);
918 wgfx(GCT_ID_DATA_ROTATE, 0x00);
919 wgfx(GCT_ID_READ_MAP_SELECT, 0x00);
920 wgfx(GCT_ID_GRAPHICS_MODE, 0x40);
921 wgfx(GCT_ID_MISC, 0x01);
922 wgfx(GCT_ID_COLOR_XCARE, 0x0f);
923 wgfx(GCT_ID_BITMASK, 0xff);
924
925 /* attribute registers */
926
927 for(i = 0; i <= 15; i++)
928 watr(ACT_ID_PALETTE0 + i, i);
929 watr(ACT_ID_ATTR_MODE_CNTL, 0x41);
930 watr(ACT_ID_OVERSCAN_COLOR, 0xff);
931 watr(ACT_ID_COLOR_PLANE_ENA, 0x0f);
932 watr(ACT_ID_HOR_PEL_PANNING, 0x00);
933 watr(ACT_ID_COLOR_SELECT, 0x00);
934
935 wb_mmio(VDAC_MASK, 0xff);
936
937 /* init local cmap as greyscale levels */
938
939 for (i = 0; i < 256; i++) {
940 virgefb_colour_table [i][0] = i;
941 virgefb_colour_table [i][1] = i;
942 virgefb_colour_table [i][2] = i;
943 }
944
945 /* clear framebuffer memory */
946
947 memset((char*)v_ram, 0x00, v_ram_size);
948
949 DPRINTK("EXIT\n");
950 return 0;
951 }
952
953
954 /*
955 * This function should fill in the `fix' structure based on the
956 * values in the `par' structure.
957 */
958
959 static int virgefb_encode_fix(struct fb_fix_screeninfo *fix,
960 struct virgefb_par *par)
961 {
962 DPRINTK("ENTER set video phys addr\n");
963
964 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
965 strcpy(fix->id, virgefb_name);
966 if (on_zorro2)
967 fix->smem_start = v_ram_phys;
968 switch (par->var.bits_per_pixel) {
969 #ifdef FBCON_HAS_CFB8
970 case 8:
971 if (on_zorro2)
972 Select_Zorro2_FrameBuffer(ENDIAN_BYTE);
973 else
974 fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_8);
975 break;
976 #endif
977 #ifdef FBCON_HAS_CFB16
978 case 16:
979 if (on_zorro2)
980 Select_Zorro2_FrameBuffer(ENDIAN_WORD);
981 else
982 fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_16);
983 break;
984 #endif
985 #ifdef FBCON_HAS_CFB32
986 case 32:
987 if (on_zorro2)
988 Select_Zorro2_FrameBuffer(ENDIAN_LONG);
989 else
990 fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_32);
991 break;
992 #endif
993 }
994
995 fix->smem_len = v_ram_size;
996 fix->mmio_start = mmio_regs_phys;
997 fix->mmio_len = 0x10000; /* TODO: verify this for the CV64/3D */
998
999 fix->type = FB_TYPE_PACKED_PIXELS;
1000 fix->type_aux = 0;
1001 if (par->var.bits_per_pixel == 8)
1002 fix->visual = FB_VISUAL_PSEUDOCOLOR;
1003 else
1004 fix->visual = FB_VISUAL_TRUECOLOR;
1005
1006 fix->xpanstep = 0;
1007 fix->ypanstep = 0;
1008 fix->ywrapstep = 0;
1009 fix->line_length = par->var.xres_virtual*par->var.bits_per_pixel/8;
1010 fix->accel = FB_ACCEL_S3_VIRGE;
1011 DPRINTK("EXIT v_ram_phys = 0x%8.8lx\n", (unsigned long)fix->smem_start);
1012 return 0;
1013 }
1014
1015
1016 /*
1017 * Fill the `par' structure based on the values in `var'.
1018 * TODO: Verify and adjust values, return -EINVAL if bad.
1019 */
1020
1021 static int virgefb_decode_var(struct fb_var_screeninfo *var,
1022 struct virgefb_par *par)
1023 {
1024 DPRINTK("ENTER\n");
1025 par->var.xres = var->xres;
1026 par->var.yres = var->yres;
1027 par->var.xres_virtual = var->xres_virtual;
1028 par->var.yres_virtual = var->yres_virtual;
1029 /* roundup and validate */
1030 par->var.xres = (par->var.xres+7) & ~7;
1031 par->var.xres_virtual = (par->var.xres_virtual+7) & ~7;
1032 if (par->var.xres_virtual < par->var.xres)
1033 par->var.xres_virtual = par->var.xres;
1034 if (par->var.yres_virtual < par->var.yres)
1035 par->var.yres_virtual = par->var.yres;
1036 par->var.xoffset = var->xoffset;
1037 par->var.yoffset = var->yoffset;
1038 par->var.bits_per_pixel = var->bits_per_pixel;
1039 if (par->var.bits_per_pixel <= 8)
1040 par->var.bits_per_pixel = 8;
1041 else if (par->var.bits_per_pixel <= 16)
1042 par->var.bits_per_pixel = 16;
1043 else
1044 par->var.bits_per_pixel = 32;
1045 #ifndef FBCON_HAS_CFB32
1046 if (par->var.bits_per_pixel == 32)
1047 par->var.bits_per_pixel = 16;
1048 #endif
1049 #ifndef FBCON_HAS_CFB16
1050 if (par->var.bits_per_pixel == 16)
1051 par->var.bits_per_pixel = 8;
1052 #endif
1053 par->var.grayscale = var->grayscale;
1054 par->var.red = var->red;
1055 par->var.green = var->green;
1056 par->var.blue = var->blue;
1057 par->var.transp = var->transp;
1058 par->var.nonstd = var->nonstd;
1059 par->var.activate = var->activate;
1060 par->var.height = var->height;
1061 par->var.width = var->width;
1062 if (var->accel_flags & FB_ACCELF_TEXT) {
1063 par->var.accel_flags = FB_ACCELF_TEXT;
1064 } else {
1065 par->var.accel_flags = 0;
1066 }
1067 par->var.pixclock = var->pixclock;
1068 par->var.left_margin = var->left_margin;
1069 par->var.right_margin = var->right_margin;
1070 par->var.upper_margin = var->upper_margin;
1071 par->var.lower_margin = var->lower_margin;
1072 par->var.hsync_len = var->hsync_len;
1073 par->var.vsync_len = var->vsync_len;
1074 par->var.sync = var->sync;
1075 par->var.vmode = var->vmode;
1076 DPRINTK("EXIT\n");
1077 return 0;
1078 }
1079
1080 /*
1081 * Fill the `var' structure based on the values in `par' and maybe
1082 * other values read out of the hardware.
1083 */
1084
1085 static int virgefb_encode_var(struct fb_var_screeninfo *var,
1086 struct virgefb_par *par)
1087 {
1088 DPRINTK("ENTER\n");
1089 memset(var, 0, sizeof(struct fb_var_screeninfo)); /* need this ? */
1090 var->xres = par->var.xres;
1091 var->yres = par->var.yres;
1092 var->xres_virtual = par->var.xres_virtual;
1093 var->yres_virtual = par->var.yres_virtual;
1094 var->xoffset = par->var.xoffset;
1095 var->yoffset = par->var.yoffset;
1096 var->bits_per_pixel = par->var.bits_per_pixel;
1097 var->grayscale = par->var.grayscale;
1098 var->red = par->var.red;
1099 var->green = par->var.green;
1100 var->blue = par->var.blue;
1101 var->transp = par->var.transp;
1102 var->nonstd = par->var.nonstd;
1103 var->activate = par->var.activate;
1104 var->height = par->var.height;
1105 var->width = par->var.width;
1106 var->accel_flags = par->var.accel_flags;
1107 var->pixclock = par->var.pixclock;
1108 var->left_margin = par->var.left_margin;
1109 var->right_margin = par->var.right_margin;
1110 var->upper_margin = par->var.upper_margin;
1111 var->lower_margin = par->var.lower_margin;
1112 var->hsync_len = par->var.hsync_len;
1113 var->vsync_len = par->var.vsync_len;
1114 var->sync = par->var.sync;
1115 var->vmode = par->var.vmode;
1116 DPRINTK("EXIT\n");
1117 return 0;
1118 }
1119
1120 /*
1121 * Set a single color register. The values supplied are already
1122 * rounded down to the hardware's capabilities (according to the
1123 * entries in the var structure). Return != 0 for invalid regno.
1124 */
1125
1126 static int virgefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1127 u_int transp, struct fb_info *info)
1128 {
1129 DPRINTK("ENTER\n");
1130 if (((current_par.var.bits_per_pixel==8) && (regno>255)) ||
1131 ((current_par.var.bits_per_pixel!=8) && (regno>15))) {
1132 DPRINTK("EXIT\n");
1133 return 1;
1134 }
1135 if (((current_par.var.bits_per_pixel==8) && (regno<256)) ||
1136 ((current_par.var.bits_per_pixel!=8) && (regno<16))) {
1137 virgefb_colour_table [regno][0] = red >> 10;
1138 virgefb_colour_table [regno][1] = green >> 10;
1139 virgefb_colour_table [regno][2] = blue >> 10;
1140 }
1141
1142 switch (current_par.var.bits_per_pixel) {
1143 #ifdef FBCON_HAS_CFB8
1144 case 8:
1145 wb_mmio(VDAC_ADDRESS_W, (unsigned char)regno);
1146 wb_mmio(VDAC_DATA, ((unsigned char)(red >> 10)));
1147 wb_mmio(VDAC_DATA, ((unsigned char)(green >> 10)));
1148 wb_mmio(VDAC_DATA, ((unsigned char)(blue >> 10)));
1149 break;
1150 #endif
1151 #ifdef FBCON_HAS_CFB16
1152 case 16:
1153 fbcon_cmap.cfb16[regno] =
1154 ((red & 0xf800) |
1155 ((green & 0xfc00) >> 5) |
1156 ((blue & 0xf800) >> 11));
1157 break;
1158 #endif
1159 #ifdef FBCON_HAS_CFB32
1160 case 32:
1161 fbcon_cmap.cfb32[regno] =
1162 /* transp = 0's or 1's ? */
1163 (((red & 0xff00) << 8) |
1164 ((green & 0xff00) >> 0) |
1165 ((blue & 0xff00) >> 8));
1166 break;
1167 #endif
1168 }
1169 DPRINTK("EXIT\n");
1170 return 0;
1171 }
1172
1173
1174 /*
1175 * Read a single color register and split it into
1176 * colors/transparent. Return != 0 for invalid regno.
1177 */
1178
1179 static int virgefb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
1180 u_int *transp, struct fb_info *info)
1181 {
1182 int t;
1183
1184 DPRINTK("ENTER\n");
1185 if (regno > 255) {
1186 DPRINTK("EXIT\n");
1187 return 1;
1188 }
1189 if (((current_par.var.bits_per_pixel==8) && (regno<256)) ||
1190 ((current_par.var.bits_per_pixel!=8) && (regno<16))) {
1191
1192 t = virgefb_colour_table [regno][0];
1193 *red = (t<<10) | (t<<4) | (t>>2);
1194 t = virgefb_colour_table [regno][1];
1195 *green = (t<<10) | (t<<4) | (t>>2);
1196 t = virgefb_colour_table [regno][2];
1197 *blue = (t<<10) | (t<<4) | (t>>2);
1198 }
1199 *transp = 0;
1200 DPRINTK("EXIT\n");
1201 return 0;
1202 }
1203
1204
1205 /*
1206 * (Un)Blank the screen
1207 */
1208
1209 static void virgefb_gfx_on_off(int blank)
1210 {
1211 DPRINTK("ENTER\n");
1212 gfx_on_off(blank);
1213 DPRINTK("EXIT\n");
1214 }
1215
1216 /*
1217 * CV3D low-level support
1218 */
1219
1220
1221 static inline void wait_3d_fifo_slots(int n) /* WaitQueue */
1222 {
1223 do {
1224 mb();
1225 } while (((rl_mmio(MR_SUBSYSTEM_STATUS_R) >> 8) & 0x1f) < (n + 2));
1226 }
1227
1228 static inline void virgefb_wait_for_idle(void) /* WaitIdle */
1229 {
1230 while(!(rl_mmio(MR_SUBSYSTEM_STATUS_R) & 0x2000)) ;
1231 blit_maybe_busy = 0;
1232 }
1233
1234 /*
1235 * BitBLT - Through the Plane
1236 */
1237
1238 static void virgefb_BitBLT(u_short curx, u_short cury, u_short destx, u_short desty,
1239 u_short width, u_short height, u_short stride, u_short depth)
1240 {
1241 unsigned int blitcmd = S3V_BITBLT | S3V_DRAW | S3V_BLT_COPY;
1242
1243 switch (depth) {
1244 #ifdef FBCON_HAS_CFB8
1245 case 8 :
1246 blitcmd |= S3V_DST_8BPP;
1247 break;
1248 #endif
1249 #ifdef FBCON_HAS_CFB16
1250 case 16 :
1251 blitcmd |= S3V_DST_16BPP;
1252 break;
1253 #endif
1254 #ifdef FBCON_HAS_CFB32
1255 case 32 :
1256 /* 32 bit uses 2 by 16 bit values, see fbcon_virge32_bmove */
1257 blitcmd |= S3V_DST_16BPP;
1258 break;
1259 #endif
1260 }
1261
1262 /* Set drawing direction */
1263 /* -Y, X maj, -X (default) */
1264 if (curx > destx) {
1265 blitcmd |= (1 << 25); /* Drawing direction +X */
1266 } else {
1267 curx += (width - 1);
1268 destx += (width - 1);
1269 }
1270
1271 if (cury > desty) {
1272 blitcmd |= (1 << 26); /* Drawing direction +Y */
1273 } else {
1274 cury += (height - 1);
1275 desty += (height - 1);
1276 }
1277
1278 wait_3d_fifo_slots(8); /* wait on fifo slots for 8 writes */
1279
1280 if (blit_maybe_busy)
1281 virgefb_wait_for_idle();
1282 blit_maybe_busy = 1;
1283
1284 wl_mmio(BLT_PATTERN_COLOR, 1); /* pattern fb color */
1285 wl_mmio(BLT_MONO_PATTERN_0, ~0);
1286 wl_mmio(BLT_MONO_PATTERN_1, ~0);
1287 wl_mmio(BLT_SIZE_X_Y, ((width << 16) | height));
1288 wl_mmio(BLT_SRC_X_Y, ((curx << 16) | cury));
1289 wl_mmio(BLT_DEST_X_Y, ((destx << 16) | desty));
1290 wl_mmio(BLT_SRC_DEST_STRIDE, (((stride << 16) | stride) /* & 0x0ff80ff8 */)); /* why is this needed now ? */
1291 wl_mmio(BLT_COMMAND_SET, blitcmd);
1292 }
1293
1294 /*
1295 * Rectangle Fill Solid
1296 */
1297
1298 static void virgefb_RectFill(u_short x, u_short y, u_short width, u_short height,
1299 u_short color, u_short stride, u_short depth)
1300 {
1301 unsigned int blitcmd = S3V_RECTFILL | S3V_DRAW |
1302 S3V_BLT_CLEAR | S3V_MONO_PAT | (1 << 26) | (1 << 25);
1303
1304 switch (depth) {
1305 #ifdef FBCON_HAS_CFB8
1306 case 8 :
1307 blitcmd |= S3V_DST_8BPP;
1308 break;
1309 #endif
1310 #ifdef FBCON_HAS_CFB16
1311 case 16 :
1312 blitcmd |= S3V_DST_16BPP;
1313 break;
1314 #endif
1315 #ifdef FBCON_HAS_CFB32
1316 case 32 :
1317 /* 32 bit uses 2 times 16 bit values, see fbcon_virge32_clear */
1318 blitcmd |= S3V_DST_16BPP;
1319 break;
1320 #endif
1321 }
1322
1323 wait_3d_fifo_slots(5); /* wait on fifo slots for 5 writes */
1324
1325 if (blit_maybe_busy)
1326 virgefb_wait_for_idle();
1327 blit_maybe_busy = 1;
1328
1329 wl_mmio(BLT_PATTERN_COLOR, (color & 0xff));
1330 wl_mmio(BLT_SIZE_X_Y, ((width << 16) | height));
1331 wl_mmio(BLT_DEST_X_Y, ((x << 16) | y));
1332 wl_mmio(BLT_SRC_DEST_STRIDE, (((stride << 16) | stride) /* & 0x0ff80ff8 */));
1333 wl_mmio(BLT_COMMAND_SET, blitcmd);
1334 }
1335
1336 /*
1337 * Move cursor to x, y
1338 */
1339
1340 #if 0
1341 static void virgefb_move_cursor(u_short x, u_short y)
1342 {
1343 DPRINTK("Yuck .... MoveCursor on a 3D\n");
1344 return 0;
1345 }
1346 #endif
1347
1348 /* -------------------- Interfaces to hardware functions -------------------- */
1349
1350 static struct fb_hwswitch virgefb_hw_switch = {
1351 .init = virge_init,
1352 .encode_fix = virgefb_encode_fix,
1353 .decode_var = virgefb_decode_var,
1354 .encode_var = virgefb_encode_var,
1355 .getcolreg = virgefb_getcolreg,
1356 .blank = virgefb_gfx_on_off
1357 };
1358
1359
1360 /* -------------------- Generic routines ------------------------------------ */
1361
1362
1363 /*
1364 * Fill the hardware's `par' structure.
1365 */
1366
1367 static void virgefb_get_par(struct virgefb_par *par)
1368 {
1369 DPRINTK("ENTER\n");
1370 if (current_par_valid) {
1371 *par = current_par;
1372 } else {
1373 fbhw->decode_var(&virgefb_default, par);
1374 }
1375 DPRINTK("EXIT\n");
1376 }
1377
1378
1379 static void virgefb_set_par(struct virgefb_par *par)
1380 {
1381 DPRINTK("ENTER\n");
1382 current_par = *par;
1383 current_par_valid = 1;
1384 DPRINTK("EXIT\n");
1385 }
1386
1387
1388 static void virgefb_set_video(struct fb_var_screeninfo *var)
1389 {
1390 /* Set clipping rectangle to current screen size */
1391
1392 unsigned int clip;
1393
1394 DPRINTK("ENTER\n");
1395 wait_3d_fifo_slots(4);
1396 clip = ((0 << 16) | (var->xres - 1));
1397 wl_mmio(BLT_CLIP_LEFT_RIGHT, clip);
1398 clip = ((0 << 16) | (var->yres - 1));
1399 wl_mmio(BLT_CLIP_TOP_BOTTOM, clip);
1400 wl_mmio(BLT_SRC_BASE, 0); /* seems we need to clear these two */
1401 wl_mmio(BLT_DEST_BASE, 0);
1402
1403 /* Load the video mode defined by the 'var' data */
1404
1405 virgefb_load_video_mode(var);
1406 DPRINTK("EXIT\n");
1407 }
1408
1409 /*
1410 Merge these two functions, Geert's suggestion.
1411 static int virgefb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info);
1412 static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
1413 */
1414
1415 static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive)
1416 {
1417 int err, activate;
1418 struct virgefb_par par;
1419
1420 DPRINTK("ENTER\n");
1421 if ((err = fbhw->decode_var(var, &par))) {
1422 DPRINTK("EXIT\n");
1423 return (err);
1424 }
1425
1426 activate = var->activate;
1427 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
1428 virgefb_set_par(&par);
1429 fbhw->encode_var(var, &par);
1430 var->activate = activate;
1431 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
1432 virgefb_set_video(var);
1433 DPRINTK("EXIT\n");
1434 return 0;
1435 }
1436
1437
1438 /*
1439 * Get the Fixed Part of the Display
1440 */
1441
1442 static int virgefb_get_fix(struct fb_fix_screeninfo *fix, int con,
1443 struct fb_info *info)
1444 {
1445 struct virgefb_par par;
1446 int error = 0;
1447
1448 DPRINTK("ENTER\n");
1449 if (con == -1)
1450 virgefb_get_par(&par);
1451 else
1452 error = fbhw->decode_var(&fb_display[con].var, &par);
1453
1454 if (!error)
1455 error = fbhw->encode_fix(fix, &par);
1456 DPRINTK("EXIT\n");
1457 return(error);
1458 }
1459
1460
1461 /*
1462 * Get the User Defined Part of the Display
1463 */
1464
1465 static int virgefb_get_var(struct fb_var_screeninfo *var, int con,
1466 struct fb_info *info)
1467 {
1468 struct virgefb_par par;
1469 int error = 0;
1470
1471 DPRINTK("ENTER\n");
1472 if (con == -1) {
1473 virgefb_get_par(&par);
1474 error = fbhw->encode_var(var, &par);
1475 disp.var = *var; /* ++Andre: don't know if this is the right place */
1476 } else {
1477 *var = fb_display[con].var;
1478 }
1479 DPRINTK("EXIT\n");
1480 return(error);
1481 }
1482
1483 static void virgefb_set_disp(int con, struct fb_info *info)
1484 {
1485 struct fb_fix_screeninfo fix;
1486 struct display *display;
1487
1488 DPRINTK("ENTER\n");
1489 if (con >= 0)
1490 display = &fb_display[con];
1491 else
1492 display = &disp; /* used during initialization */
1493
1494 virgefb_get_fix(&fix, con, info);
1495 if (con == -1)
1496 con = 0;
1497 if(on_zorro2) {
1498 info->screen_base = (char*)v_ram;
1499 } else {
1500 switch (display->var.bits_per_pixel) {
1501 #ifdef FBCON_HAS_CFB8
1502 case 8:
1503 info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_8);
1504 break;
1505 #endif
1506 #ifdef FBCON_HAS_CFB16
1507 case 16:
1508 info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_16);
1509 break;
1510 #endif
1511 #ifdef FBCON_HAS_CFB32
1512 case 32:
1513 info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_32);
1514 break;
1515 #endif
1516 }
1517 }
1518 display->visual = fix.visual;
1519 display->type = fix.type;
1520 display->type_aux = fix.type_aux;
1521 display->ypanstep = fix.ypanstep;
1522 display->ywrapstep = fix.ywrapstep;
1523 display->can_soft_blank = 1;
1524 display->inverse = virgefb_inverse;
1525 display->line_length = display->var.xres_virtual*
1526 display->var.bits_per_pixel/8;
1527
1528 switch (display->var.bits_per_pixel) {
1529 #ifdef FBCON_HAS_CFB8
1530 case 8:
1531 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1532 display->dispsw = &fbcon_virge8;
1533 #warning FIXME: We should reinit the graphics engine here
1534 } else
1535 display->dispsw = &fbcon_cfb8;
1536 break;
1537 #endif
1538 #ifdef FBCON_HAS_CFB16
1539 case 16:
1540 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1541 display->dispsw = &fbcon_virge16;
1542 } else
1543 display->dispsw = &fbcon_cfb16;
1544 display->dispsw_data = &fbcon_cmap.cfb16;
1545 break;
1546 #endif
1547 #ifdef FBCON_HAS_CFB32
1548 case 32:
1549 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1550 display->dispsw = &fbcon_virge32;
1551 } else
1552 display->dispsw = &fbcon_cfb32;
1553 display->dispsw_data = &fbcon_cmap.cfb32;
1554 break;
1555 #endif
1556 default:
1557 display->dispsw = &fbcon_dummy;
1558 break;
1559 }
1560 DPRINTK("EXIT v_ram virt = 0x%8.8lx\n",(unsigned long)display->screen_base);
1561 }
1562
1563
1564 /*
1565 * Set the User Defined Part of the Display
1566 */
1567
1568 static int virgefb_set_var(struct fb_var_screeninfo *var, int con,
1569 struct fb_info *info)
1570 {
1571 int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
1572
1573 DPRINTK("ENTER\n");
1574
1575 if ((err = virgefb_do_fb_set_var(var, con == info->currcon))) {
1576 DPRINTK("EXIT\n");
1577 return(err);
1578 }
1579 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
1580 oldxres = fb_display[con].var.xres;
1581 oldyres = fb_display[con].var.yres;
1582 oldvxres = fb_display[con].var.xres_virtual;
1583 oldvyres = fb_display[con].var.yres_virtual;
1584 oldbpp = fb_display[con].var.bits_per_pixel;
1585 oldaccel = fb_display[con].var.accel_flags;
1586 fb_display[con].var = *var;
1587 if (oldxres != var->xres || oldyres != var->yres ||
1588 oldvxres != var->xres_virtual ||
1589 oldvyres != var->yres_virtual ||
1590 oldbpp != var->bits_per_pixel ||
1591 oldaccel != var->accel_flags) {
1592 virgefb_set_disp(con, info);
1593 if (fb_info.changevar)
1594 (*fb_info.changevar)(con);
1595 fb_alloc_cmap(&fb_display[con].cmap, 0, 0);
1596 do_install_cmap(con, info);
1597 }
1598 }
1599 var->activate = 0;
1600 DPRINTK("EXIT\n");
1601 return 0;
1602 }
1603
1604
1605 /*
1606 * Get the Colormap
1607 */
1608
1609 static int virgefb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
1610 struct fb_info *info)
1611 {
1612 DPRINTK("ENTER\n");
1613 if (con == info->currcon) { /* current console? */
1614 DPRINTK("EXIT - console is current console, fb_get_cmap\n");
1615 return(fb_get_cmap(cmap, kspc, fbhw->getcolreg, info));
1616 } else if (fb_display[con].cmap.len) { /* non default colormap? */
1617 DPRINTK("Use console cmap\n");
1618 fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
1619 } else {
1620 DPRINTK("Use default cmap\n");
1621 fb_copy_cmap(fb_default_cmap(fb_display[con].var.bits_per_pixel==8 ? 256 : 16),
1622 cmap, kspc ? 0 : 2);
1623 }
1624 DPRINTK("EXIT\n");
1625 return 0;
1626 }
1627
1628 static struct fb_ops virgefb_ops = {
1629 .owner = THIS_MODULE,
1630 .fb_get_fix = virgefb_get_fix,
1631 .fb_get_var = virgefb_get_var,
1632 .fb_set_var = virgefb_set_var,
1633 .fb_get_cmap = virgefb_get_cmap,
1634 .fb_set_cmap = gen_set_cmap,
1635 .fb_setcolreg = virgefb_setcolreg,
1636 .fb_blank = virgefb_blank,
1637 };
1638
1639 int __init virgefb_setup(char *options)
1640 {
1641 char *this_opt;
1642 fb_info.fontname[0] = '\0';
1643
1644 DPRINTK("ENTER\n");
1645 if (!options || !*options) {
1646 DPRINTK("EXIT\n");
1647 return 0;
1648 }
1649
1650 while ((this_opt = strsep(&options, ",")) != NULL) {
1651 if (!*this_opt)
1652 continue;
1653 if (!strcmp(this_opt, "inverse")) {
1654 virgefb_inverse = 1;
1655 fb_invert_cmaps();
1656 } else if (!strncmp(this_opt, "font:", 5))
1657 strcpy(fb_info.fontname, this_opt+5);
1658 #ifdef FBCON_HAS_CFB8
1659 else if (!strcmp (this_opt, "virge8")){
1660 virgefb_default = virgefb_predefined[VIRGE8_DEFMODE].var;
1661 }
1662 #endif
1663 #ifdef FBCON_HAS_CFB16
1664 else if (!strcmp (this_opt, "virge16")){
1665 virgefb_default = virgefb_predefined[VIRGE16_DEFMODE].var;
1666 }
1667 #endif
1668 #ifdef FBCON_HAS_CFB32
1669 else if (!strcmp (this_opt, "virge32")){
1670 virgefb_default = virgefb_predefined[VIRGE32_DEFMODE].var;
1671 }
1672 #endif
1673 else
1674 virgefb_get_video_mode(this_opt);
1675 }
1676
1677 printk(KERN_INFO "mode : xres=%d, yres=%d, bpp=%d\n", virgefb_default.xres,
1678 virgefb_default.yres, virgefb_default.bits_per_pixel);
1679 DPRINTK("EXIT\n");
1680 return 0;
1681 }
1682
1683
1684 /*
1685 * Get a Video Mode
1686 */
1687
1688 static int __init virgefb_get_video_mode(const char *name)
1689 {
1690 int i;
1691
1692 DPRINTK("ENTER\n");
1693 for (i = 0; i < NUM_TOTAL_MODES; i++) {
1694 if (!strcmp(name, virgefb_predefined[i].name)) {
1695 virgefb_default = virgefb_predefined[i].var;
1696 DPRINTK("EXIT\n");
1697 return(i);
1698 }
1699 }
1700 /* ++Andre: set virgefb default mode */
1701
1702 /* prefer 16 bit depth, 8 if no 16, if no 8 or 16 use 32 */
1703
1704 #ifdef FBCON_HAS_CFB32
1705 virgefb_default = virgefb_predefined[VIRGE32_DEFMODE].var;
1706 #endif
1707 #ifdef FBCON_HAS_CFB8
1708 virgefb_default = virgefb_predefined[VIRGE8_DEFMODE].var;
1709 #endif
1710 #ifdef FBCON_HAS_CFB16
1711 virgefb_default = virgefb_predefined[VIRGE16_DEFMODE].var;
1712 #endif
1713 DPRINTK("EXIT\n");
1714 return 0;
1715 }
1716
1717 /*
1718 * Initialization
1719 */
1720
1721 int __init virgefb_init(void)
1722 {
1723 struct virgefb_par par;
1724 unsigned long board_addr, board_size;
1725 struct zorro_dev *z = NULL;
1726
1727 DPRINTK("ENTER\n");
1728
1729 z = zorro_find_device(ZORRO_PROD_PHASE5_CYBERVISION64_3D, NULL);
1730 if (!z)
1731 return -ENODEV;
1732
1733 board_addr = z->resource.start;
1734 if (board_addr < 0x01000000) {
1735
1736 /* board running in Z2 space. This includes the video memory
1737 as well as the S3 register set */
1738
1739 on_zorro2 = 1;
1740 board_size = 0x00400000;
1741
1742 if (!request_mem_region(board_addr, board_size, "S3 ViRGE"))
1743 return -ENOMEM;
1744
1745 v_ram_phys = board_addr;
1746 v_ram = ZTWO_VADDR(v_ram_phys);
1747 mmio_regs_phys = (unsigned long)(board_addr + 0x003c0000);
1748 vgaio_regs = (unsigned char *) ZTWO_VADDR(board_addr + 0x003c0000);
1749 mmio_regs = (unsigned char *)ZTWO_VADDR(mmio_regs_phys);
1750 vcode_switch_base = (unsigned long) ZTWO_VADDR(board_addr + 0x003a0000);
1751 printk(KERN_INFO "CV3D detected running in Z2 mode.\n");
1752
1753 } else {
1754
1755 /* board running in Z3 space. Separate video memory (3 apertures)
1756 and S3 register set */
1757
1758 on_zorro2 = 0;
1759 board_size = 0x01000000;
1760
1761 if (!request_mem_region(board_addr, board_size, "S3 ViRGE"))
1762 return -ENOMEM;
1763
1764 v_ram_phys = board_addr + 0x04000000;
1765 v_ram = (unsigned long)ioremap(v_ram_phys, 0x01000000);
1766 mmio_regs_phys = board_addr + 0x05000000;
1767 vgaio_regs = (unsigned char *)ioremap(board_addr +0x0c000000, 0x00100000); /* includes PCI regs */
1768 mmio_regs = ioremap(mmio_regs_phys, 0x00010000);
1769 vcode_switch_base = (unsigned long)ioremap(board_addr + 0x08000000, 0x1000);
1770 printk(KERN_INFO "CV3D detected running in Z3 mode\n");
1771 }
1772
1773 #if defined (VIRGEFBDEBUG)
1774 DPRINTK("board_addr : 0x%8.8lx\n",board_addr);
1775 DPRINTK("board_size : 0x%8.8lx\n",board_size);
1776 DPRINTK("mmio_regs_phy : 0x%8.8lx\n",mmio_regs_phys);
1777 DPRINTK("v_ram_phys : 0x%8.8lx\n",v_ram_phys);
1778 DPRINTK("vgaio_regs : 0x%8.8lx\n",(unsigned long)vgaio_regs);
1779 DPRINTK("mmio_regs : 0x%8.8lx\n",(unsigned long)mmio_regs);
1780 DPRINTK("v_ram : 0x%8.8lx\n",v_ram);
1781 DPRINTK("vcode sw base : 0x%8.8lx\n",vcode_switch_base);
1782 #endif
1783 fbhw = &virgefb_hw_switch;
1784 strcpy(fb_info.modename, virgefb_name);
1785 fb_info.changevar = NULL;
1786 fb_info.fbops = &virgefb_ops;
1787 fb_info.disp = &disp;
1788 fb_info.currcon = -1;
1789 fb_info.switch_con = &virgefb_switch;
1790 fb_info.updatevar = &virgefb_updatevar;
1791 fb_info.flags = FBINFO_FLAG_DEFAULT;
1792 fbhw->init();
1793 fbhw->decode_var(&virgefb_default, &par);
1794 fbhw->encode_var(&virgefb_default, &par);
1795 virgefb_do_fb_set_var(&virgefb_default, 1);
1796 virgefb_get_var(&fb_display[0].var, -1, &fb_info);
1797 virgefb_set_disp(-1, &fb_info);
1798 do_install_cmap(0, &fb_info);
1799
1800 if (register_framebuffer(&fb_info) < 0) {
1801 #warning release resources
1802 printk(KERN_ERR "virgefb.c: register_framebuffer failed\n");
1803 DPRINTK("EXIT\n");
1804 return -EINVAL;
1805 }
1806
1807 printk(KERN_INFO "fb%d: %s frame buffer device, using %ldK of video memory\n",
1808 fb_info.node, fb_info.modename, v_ram_size>>10);
1809
1810 /* TODO: This driver cannot be unloaded yet */
1811
1812 DPRINTK("EXIT\n");
1813 return 0;
1814 }
1815
1816
1817 static int virgefb_switch(int con, struct fb_info *info)
1818 {
1819 DPRINTK("ENTER\n");
1820 /* Do we have to save the colormap? */
1821 if (fb_display[info->currcon].cmap.len)
1822 fb_get_cmap(&fb_display[info->currcon].cmap, 1,
1823 fbhw->getcolreg, info);
1824 virgefb_do_fb_set_var(&fb_display[con].var, 1);
1825 info->currcon = con;
1826 /* Install new colormap */
1827 do_install_cmap(con, info);
1828 DPRINTK("EXIT\n");
1829 return 0;
1830 }
1831
1832
1833 /*
1834 * Update the `var' structure (called by fbcon.c)
1835 *
1836 * This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
1837 * Since it's called by a kernel driver, no range checking is done.
1838 */
1839
1840 static int virgefb_updatevar(int con, struct fb_info *info)
1841 {
1842 DPRINTK("ENTER\n");
1843 return 0;
1844 DPRINTK("EXIT\n");
1845 }
1846
1847 /*
1848 * Blank the display.
1849 */
1850
1851 static int virgefb_blank(int blank, struct fb_info *info)
1852 {
1853 DPRINTK("ENTER\n");
1854 fbhw->blank(blank);
1855 DPRINTK("EXIT\n");
1856 return 0;
1857 }
1858
1859
1860 /*
1861 * Text console acceleration
1862 */
1863
1864 #ifdef FBCON_HAS_CFB8
1865 static void fbcon_virge8_bmove(struct display *p, int sy, int sx, int dy,
1866 int dx, int height, int width)
1867 {
1868 sx *= 8; dx *= 8; width *= 8;
1869 virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
1870 (u_short)(dy*fontheight(p)), (u_short)width,
1871 (u_short)(height*fontheight(p)), (u_short)p->next_line, 8);
1872 }
1873
1874 static void fbcon_virge8_clear(struct vc_data *conp, struct display *p, int sy,
1875 int sx, int height, int width)
1876 {
1877 unsigned char bg;
1878
1879 sx *= 8; width *= 8;
1880 bg = attr_bgcol_ec(p,conp);
1881 virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
1882 (u_short)width, (u_short)(height*fontheight(p)),
1883 (u_short)bg, (u_short)p->next_line, 8);
1884 }
1885
1886 static void fbcon_virge8_putc(struct vc_data *conp, struct display *p, int c, int yy,
1887 int xx)
1888 {
1889 if (blit_maybe_busy)
1890 virgefb_wait_for_idle();
1891 fbcon_cfb8_putc(conp, p, c, yy, xx);
1892 }
1893
1894 static void fbcon_virge8_putcs(struct vc_data *conp, struct display *p,
1895 const unsigned short *s, int count, int yy, int xx)
1896 {
1897 if (blit_maybe_busy)
1898 virgefb_wait_for_idle();
1899 fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
1900 }
1901
1902 static void fbcon_virge8_revc(struct display *p, int xx, int yy)
1903 {
1904 if (blit_maybe_busy)
1905 virgefb_wait_for_idle();
1906 fbcon_cfb8_revc(p, xx, yy);
1907 }
1908
1909 static void fbcon_virge8_clear_margins(struct vc_data *conp, struct display *p,
1910 int bottom_only)
1911 {
1912 if (blit_maybe_busy)
1913 virgefb_wait_for_idle();
1914 fbcon_cfb8_clear_margins(conp, p, bottom_only);
1915 }
1916
1917 static struct display_switch fbcon_virge8 = {
1918 .setup = fbcon_cfb8_setup,
1919 .bmove = fbcon_virge8_bmove,
1920 .clear = fbcon_virge8_clear,
1921 .putc = fbcon_virge8_putc,
1922 .putcs = fbcon_virge8_putcs,
1923 .revc = fbcon_virge8_revc,
1924 .clear_margins = fbcon_virge8_clear_margins,
1925 .fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
1926 };
1927 #endif
1928
1929 #ifdef FBCON_HAS_CFB16
1930 static void fbcon_virge16_bmove(struct display *p, int sy, int sx, int dy,
1931 int dx, int height, int width)
1932 {
1933 sx *= 8; dx *= 8; width *= 8;
1934 virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
1935 (u_short)(dy*fontheight(p)), (u_short)width,
1936 (u_short)(height*fontheight(p)), (u_short)p->next_line, 16);
1937 }
1938
1939 static void fbcon_virge16_clear(struct vc_data *conp, struct display *p, int sy,
1940 int sx, int height, int width)
1941 {
1942 unsigned char bg;
1943
1944 sx *= 8; width *= 8;
1945 bg = attr_bgcol_ec(p,conp);
1946 virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
1947 (u_short)width, (u_short)(height*fontheight(p)),
1948 (u_short)bg, (u_short)p->next_line, 16);
1949 }
1950
1951 static void fbcon_virge16_putc(struct vc_data *conp, struct display *p, int c, int yy,
1952 int xx)
1953 {
1954 if (blit_maybe_busy)
1955 virgefb_wait_for_idle();
1956 fbcon_cfb16_putc(conp, p, c, yy, xx);
1957 }
1958
1959 static void fbcon_virge16_putcs(struct vc_data *conp, struct display *p,
1960 const unsigned short *s, int count, int yy, int xx)
1961 {
1962 if (blit_maybe_busy)
1963 virgefb_wait_for_idle();
1964 fbcon_cfb16_putcs(conp, p, s, count, yy, xx);
1965 }
1966
1967 static void fbcon_virge16_revc(struct display *p, int xx, int yy)
1968 {
1969 if (blit_maybe_busy)
1970 virgefb_wait_for_idle();
1971 fbcon_cfb16_revc(p, xx, yy);
1972 }
1973
1974 static void fbcon_virge16_clear_margins(struct vc_data *conp, struct display *p,
1975 int bottom_only)
1976 {
1977 if (blit_maybe_busy)
1978 virgefb_wait_for_idle();
1979 fbcon_cfb16_clear_margins(conp, p, bottom_only);
1980 }
1981
1982 static struct display_switch fbcon_virge16 = {
1983 .setup = fbcon_cfb16_setup,
1984 .bmove = fbcon_virge16_bmove,
1985 .clear = fbcon_virge16_clear,
1986 .putc = fbcon_virge16_putc,
1987 .putcs = fbcon_virge16_putcs,
1988 .revc = fbcon_virge16_revc,
1989 .clear_margins = fbcon_virge16_clear_margins,
1990 .fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
1991 };
1992 #endif
1993
1994 #ifdef FBCON_HAS_CFB32
1995 static void fbcon_virge32_bmove(struct display *p, int sy, int sx, int dy,
1996 int dx, int height, int width)
1997 {
1998 sx *= 16; dx *= 16; width *= 16; /* doubled these values to do 32 bit blit */
1999 virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
2000 (u_short)(dy*fontheight(p)), (u_short)width,
2001 (u_short)(height*fontheight(p)), (u_short)p->next_line, 16);
2002 }
2003
2004 static void fbcon_virge32_clear(struct vc_data *conp, struct display *p, int sy,
2005 int sx, int height, int width)
2006 {
2007 unsigned char bg;
2008
2009 sx *= 16; width *= 16; /* doubled these values to do 32 bit blit */
2010 bg = attr_bgcol_ec(p,conp);
2011 virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
2012 (u_short)width, (u_short)(height*fontheight(p)),
2013 (u_short)bg, (u_short)p->next_line, 16);
2014 }
2015
2016 static void fbcon_virge32_putc(struct vc_data *conp, struct display *p, int c, int yy,
2017 int xx)
2018 {
2019 if (blit_maybe_busy)
2020 virgefb_wait_for_idle();
2021 fbcon_cfb32_putc(conp, p, c, yy, xx);
2022 }
2023
2024 static void fbcon_virge32_putcs(struct vc_data *conp, struct display *p,
2025 const unsigned short *s, int count, int yy, int xx)
2026 {
2027 if (blit_maybe_busy)
2028 virgefb_wait_for_idle();
2029 fbcon_cfb32_putcs(conp, p, s, count, yy, xx);
2030 }
2031
2032 static void fbcon_virge32_revc(struct display *p, int xx, int yy)
2033 {
2034 if (blit_maybe_busy)
2035 virgefb_wait_for_idle();
2036 fbcon_cfb32_revc(p, xx, yy);
2037 }
2038
2039 static void fbcon_virge32_clear_margins(struct vc_data *conp, struct display *p,
2040 int bottom_only)
2041 {
2042 if (blit_maybe_busy)
2043 virgefb_wait_for_idle();
2044 fbcon_cfb32_clear_margins(conp, p, bottom_only);
2045 }
2046
2047 static struct display_switch fbcon_virge32 = {
2048 .setup = fbcon_cfb32_setup,
2049 .bmove = fbcon_virge32_bmove,
2050 .clear = fbcon_virge32_clear,
2051 .putc = fbcon_virge32_putc,
2052 .putcs = fbcon_virge32_putcs,
2053 .revc = fbcon_virge32_revc,
2054 .clear_margins = fbcon_virge32_clear_margins,
2055 .fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
2056 };
2057 #endif
2058
2059 #ifdef MODULE
2060 MODULE_LICENSE("GPL");
2061
2062 int init_module(void)
2063 {
2064 return virgefb_init();
2065 }
2066 #endif /* MODULE */
2067
2068 static int cv3d_has_4mb(void)
2069 {
2070 /* cyberfb version didn't work, neither does this (not reliably)
2071 forced to return 4MB */
2072 #if 0
2073 volatile unsigned long *t0, *t2;
2074 #endif
2075 DPRINTK("ENTER\n");
2076 #if 0
2077 /* write patterns in memory and test if they can be read */
2078 t0 = (volatile unsigned long *)v_ram;
2079 t2 = (volatile unsigned long *)(v_ram + 0x00200000);
2080 *t0 = 0x87654321;
2081 *t2 = 0x12345678;
2082
2083 if (*t0 != 0x87654321) {
2084 /* read of first location failed */
2085 DPRINTK("EXIT - 0MB !\n");
2086 return 0;
2087 }
2088
2089 if (*t2 == 0x87654321) {
2090 /* should read 0x12345678 if 4MB */
2091 DPRINTK("EXIT - 2MB(a) \n");
2092 return 0;
2093 }
2094
2095 if (*t2 != 0x12345678) {
2096 /* upper 2MB read back match failed */
2097 DPRINTK("EXIT - 2MB(b)\n");
2098 return 0;
2099 }
2100
2101 /* may have 4MB */
2102
2103 *t2 = 0xAAAAAAAA;
2104
2105 if(*t2 != 0xAAAAAAAA) {
2106 /* upper 2MB read back match failed */
2107 DPRINTK("EXIT - 2MB(c)\n");
2108 return 0;
2109 }
2110
2111 *t2 = 0x55555555;
2112
2113 if(*t2 != 0x55555555) {
2114 /* upper 2MB read back match failed */
2115 DPRINTK("EXIT - 2MB(d)\n");
2116 return 0;
2117 }
2118
2119 #endif
2120 DPRINTK("EXIT - 4MB\n");
2121 return 1;
2122 }
2123
2124
2125 /*
2126 * Computes M, N, and R pll params for freq arg.
2127 * Returns 16 bits - hi 0MMMMMM lo 0RRNNNNN
2128 */
2129
2130 #define REFCLOCK 14318000
2131
2132 static unsigned short virgefb_compute_clock(unsigned long freq)
2133 {
2134
2135 unsigned char m, n, r, rpwr;
2136 unsigned long diff, ftry, save = ~0UL;
2137 unsigned short mnr;
2138
2139 DPRINTK("ENTER\n");
2140
2141 for (r = 0, rpwr = 1 ; r < 4 ; r++, rpwr *= 2) {
2142 if ((135000000 <= (rpwr * freq)) && ((rpwr * freq) <= 270000000)) {
2143 for (n = 1 ; n < 32 ; n++) {
2144 m = ((freq * (n + 2) * rpwr)/REFCLOCK) - 2;
2145 if (m == 0 || m >127)
2146 break;
2147 ftry = ((REFCLOCK / (n + 2)) * (m + 2)) / rpwr;
2148 if (ftry > freq)
2149 diff = ftry - freq;
2150 else
2151 diff = freq - ftry;
2152 if (diff < save) {
2153 save = diff;
2154 mnr = (m << 8) | (r<<5) | (n & 0x7f);
2155 }
2156 }
2157 }
2158 }
2159 if (save == ~0UL)
2160 printk("Can't compute clock PLL values for %ld Hz clock\n", freq);
2161 DPRINTK("EXIT\n");
2162 return(mnr);
2163 }
2164
2165 static void virgefb_load_video_mode(struct fb_var_screeninfo *video_mode)
2166 {
2167 unsigned char lace, dblscan, tmp;
2168 unsigned short mnr;
2169 unsigned short HT, HDE, HBS, HBW, HSS, HSW;
2170 unsigned short VT, VDE, VBS, VBW, VSS, VSW;
2171 unsigned short SCO;
2172 int cr11;
2173 int cr67;
2174 int hmul;
2175 int xres, xres_virtual, hfront, hsync, hback;
2176 int yres, vfront, vsync, vback;
2177 int bpp;
2178 int i;
2179 long freq;
2180
2181 DPRINTK("ENTER : %dx%d-%d\n",video_mode->xres, video_mode->yres,
2182 video_mode->bits_per_pixel);
2183
2184 bpp = video_mode->bits_per_pixel;
2185 xres = video_mode->xres;
2186 xres_virtual = video_mode->xres_virtual;
2187 hfront = video_mode->right_margin;
2188 hsync = video_mode->hsync_len;
2189 hback = video_mode->left_margin;
2190
2191 lace = 0;
2192 dblscan = 0;
2193
2194 if (video_mode->vmode & FB_VMODE_DOUBLE) {
2195 yres = video_mode->yres * 2;
2196 vfront = video_mode->lower_margin * 2;
2197 vsync = video_mode->vsync_len * 2;
2198 vback = video_mode->upper_margin * 2;
2199 dblscan = 1;
2200 } else if (video_mode->vmode & FB_VMODE_INTERLACED) {
2201 yres = (video_mode->yres + 1) / 2;
2202 vfront = (video_mode->lower_margin + 1) / 2;
2203 vsync = (video_mode->vsync_len + 1) / 2;
2204 vback = (video_mode->upper_margin + 1) / 2;
2205 lace = 1;
2206 } else {
2207 yres = video_mode->yres;
2208 vfront = video_mode->lower_margin;
2209 vsync = video_mode->vsync_len;
2210 vback = video_mode->upper_margin;
2211 }
2212
2213 switch (bpp) {
2214 case 8:
2215 video_mode->red.offset = 0;
2216 video_mode->green.offset = 0;
2217 video_mode->blue.offset = 0;
2218 video_mode->transp.offset = 0;
2219 video_mode->red.length = 8;
2220 video_mode->green.length = 8;
2221 video_mode->blue.length = 8;
2222 video_mode->transp.length = 0;
2223 hmul = 1;
2224 cr67 = 0x00;
2225 SCO = xres_virtual / 8;
2226 break;
2227 case 16:
2228 video_mode->red.offset = 11;
2229 video_mode->green.offset = 5;
2230 video_mode->blue.offset = 0;
2231 video_mode->transp.offset = 0;
2232 video_mode->red.length = 5;
2233 video_mode->green.length = 6;
2234 video_mode->blue.length = 5;
2235 video_mode->transp.length = 0;
2236 hmul = 2;
2237 cr67 = 0x50;
2238 SCO = xres_virtual / 4;
2239 break;
2240 case 32:
2241 video_mode->red.offset = 16;
2242 video_mode->green.offset = 8;
2243 video_mode->blue.offset = 0;
2244 video_mode->transp.offset = 24;
2245 video_mode->red.length = 8;
2246 video_mode->green.length = 8;
2247 video_mode->blue.length = 8;
2248 video_mode->transp.length = 8;
2249 hmul = 1;
2250 cr67 = 0xd0;
2251 SCO = xres_virtual / 2;
2252 break;
2253 }
2254
2255 HT = (((xres + hfront + hsync + hback) / 8) * hmul) - 5;
2256 HDE = ((xres / 8) * hmul) - 1;
2257 HBS = (xres / 8) * hmul;
2258 HSS = ((xres + hfront) / 8) * hmul;
2259 HSW = (hsync / 8) * hmul;
2260 HBW = (((hfront + hsync + hback) / 8) * hmul) - 2;
2261
2262 VT = yres + vfront + vsync + vback - 2;
2263 VDE = yres - 1;
2264 VBS = yres - 1;
2265 VSS = yres + vfront;
2266 VSW = vsync;
2267 VBW = vfront + vsync + vback - 2;
2268
2269 #ifdef VIRGEFBDEBUG
2270 DPRINTK("HDE : 0x%4.4x, %4.4d\n", HDE, HDE);
2271 DPRINTK("HBS : 0x%4.4x, %4.4d\n", HBS, HBS);
2272 DPRINTK("HSS : 0x%4.4x, %4.4d\n", HSS, HSS);
2273 DPRINTK("HSW : 0x%4.4x, %4.4d\n", HSW, HSW);
2274 DPRINTK("HBW : 0x%4.4x, %4.4d\n", HBW, HBW);
2275 DPRINTK("HSS + HSW : 0x%4.4x, %4.4d\n", HSS+HSW, HSS+HSW);
2276 DPRINTK("HBS + HBW : 0x%4.4x, %4.4d\n", HBS+HBW, HBS+HBW);
2277 DPRINTK("HT : 0x%4.4x, %4.4d\n", HT, HT);
2278 DPRINTK("VDE : 0x%4.4x, %4.4d\n", VDE, VDE);
2279 DPRINTK("VBS : 0x%4.4x, %4.4d\n", VBS, VBS);
2280 DPRINTK("VSS : 0x%4.4x, %4.4d\n", VSS, VSS);
2281 DPRINTK("VSW : 0x%4.4x, %4.4d\n", VSW, VSW);
2282 DPRINTK("VBW : 0x%4.4x, %4.4d\n", VBW, VBW);
2283 DPRINTK("VT : 0x%4.4x, %4.4d\n", VT, VT);
2284 #endif
2285
2286 /* turn gfx off, don't mess up the display */
2287
2288 gfx_on_off(1);
2289
2290 /* H and V sync polarity */
2291
2292 tmp = rb_mmio(GREG_MISC_OUTPUT_R) & 0x2f; /* colour, ram enable, clk sr12/s13 sel */
2293 if (!(video_mode->sync & FB_SYNC_HOR_HIGH_ACT))
2294 tmp |= 0x40; /* neg H sync polarity */
2295 if (!(video_mode->sync & FB_SYNC_VERT_HIGH_ACT))
2296 tmp |= 0x80; /* neg V sync polarity */
2297 tmp |= 0x0c; /* clk from sr12/sr13 */
2298 wb_mmio(GREG_MISC_OUTPUT_W, tmp);
2299
2300 /* clocks */
2301
2302 wseq(SEQ_ID_BUS_REQ_CNTL, 0xc0); /* 2 clk mem wr and /RAS1 */
2303 wseq(SEQ_ID_CLKSYN_CNTL_2, 0x80); /* b7 is 2 mem clk wr */
2304 mnr = virgefb_compute_clock(MEMCLOCK);
2305 DPRINTK("mem clock %d, m %d, n %d, r %d.\n", MEMCLOCK, ((mnr>>8)&0x7f), (mnr&0x1f), ((mnr >> 5)&0x03));
2306 wseq(SEQ_ID_MCLK_LO, (mnr & 0x7f));
2307 wseq(SEQ_ID_MCLK_HI, ((mnr & 0x7f00) >> 8));
2308 freq = (1000000000 / video_mode->pixclock) * 1000; /* pixclock is in ps ... convert to Hz */
2309 mnr = virgefb_compute_clock(freq);
2310 DPRINTK("dot clock %ld, m %d, n %d, r %d.\n", freq, ((mnr>>8)&0x7f), (mnr&0x1f), ((mnr>>5)&0x03));
2311 wseq(SEQ_ID_DCLK_LO, (mnr & 0x7f));
2312 wseq(SEQ_ID_DCLK_HI, ((mnr & 0x7f00) >> 8));
2313 wseq(SEQ_ID_CLKSYN_CNTL_2, 0xa0);
2314 wseq(SEQ_ID_CLKSYN_CNTL_2, 0x80);
2315 udelay(100);
2316
2317 /* load display parameters into board */
2318
2319 /* not sure about sync and blanking extensions bits in cr5d and cr5 */
2320
2321 wcrt(CRT_ID_EXT_HOR_OVF, /* 0x5d */
2322 ((HT & 0x100) ? 0x01 : 0x00) |
2323 ((HDE & 0x100) ? 0x02 : 0x00) |
2324 ((HBS & 0x100) ? 0x04 : 0x00) |
2325 /* (((HBS + HBW) & 0x40) ? 0x08 : 0x00) | */
2326 ((HSS & 0x100) ? 0x10 : 0x00) |
2327 /* (((HSS + HSW) & 0x20) ? 0x20 : 0x00) | */
2328 ((HSW >= 0x20) ? 0x20 : 0x00) |
2329 (((HT-5) & 0x100) ? 0x40 : 0x00));
2330
2331 wcrt(CRT_ID_EXT_VER_OVF, /* 0x5e */
2332 ((VT & 0x400) ? 0x01 : 0x00) |
2333 ((VDE & 0x400) ? 0x02 : 0x00) |
2334 ((VBS & 0x400) ? 0x04 : 0x00) |
2335 ((VSS & 0x400) ? 0x10 : 0x00) |
2336 0x40); /* line compare */
2337
2338 wcrt(CRT_ID_START_VER_RETR, VSS);
2339 cr11 = rcrt(CRT_ID_END_VER_RETR) | 0x20; /* vert interrupt flag */
2340 wcrt(CRT_ID_END_VER_RETR, ((cr11 & 0x20) | ((VSS + VSW) & 0x0f))); /* keeps vert irq enable state, also has unlock bit cr0 to 7 */
2341 wcrt(CRT_ID_VER_DISP_ENA_END, VDE);
2342 wcrt(CRT_ID_START_VER_BLANK, VBS);
2343 wcrt(CRT_ID_END_VER_BLANK, VBS + VBW); /* might be +/- 1 out */
2344 wcrt(CRT_ID_HOR_TOTAL, HT);
2345 wcrt(CRT_ID_DISPLAY_FIFO, HT - 5);
2346 wcrt(CRT_ID_BACKWAD_COMP_3, 0x10); /* enable display fifo */
2347 wcrt(CRT_ID_HOR_DISP_ENA_END, HDE);
2348 wcrt(CRT_ID_START_HOR_BLANK , HBS);
2349 wcrt(CRT_ID_END_HOR_BLANK, (HBS + HBW) & 0x1f);
2350 wcrt(CRT_ID_START_HOR_RETR, HSS);
2351 wcrt(CRT_ID_END_HOR_RETR, /* cr5 */
2352 ((HSS + HSW) & 0x1f) |
2353 (((HBS + HBW) & 0x20) ? 0x80 : 0x00));
2354 wcrt(CRT_ID_VER_TOTAL, VT);
2355 wcrt(CRT_ID_OVERFLOW,
2356 ((VT & 0x100) ? 0x01 : 0x00) |
2357 ((VDE & 0x100) ? 0x02 : 0x00) |
2358 ((VSS & 0x100) ? 0x04 : 0x00) |
2359 ((VBS & 0x100) ? 0x08 : 0x00) |
2360 0x10 |
2361 ((VT & 0x200) ? 0x20 : 0x00) |
2362 ((VDE & 0x200) ? 0x40 : 0x00) |
2363 ((VSS & 0x200) ? 0x80 : 0x00));
2364 wcrt(CRT_ID_MAX_SCAN_LINE,
2365 (dblscan ? 0x80 : 0x00) |
2366 0x40 |
2367 ((VBS & 0x200) ? 0x20 : 0x00));
2368 wcrt(CRT_ID_LINE_COMPARE, 0xff);
2369 wcrt(CRT_ID_LACE_RETR_START, HT / 2); /* (HT-5)/2 ? */
2370 wcrt(CRT_ID_LACE_CONTROL, (lace ? 0x20 : 0x00));
2371
2372 wcrt(CRT_ID_SCREEN_OFFSET, SCO);
2373 wcrt(CRT_ID_EXT_SYS_CNTL_2, (SCO >> 4) & 0x30 );
2374
2375 /* wait for vert sync before cr67 update */
2376
2377 for (i=0; i < 10000; i++) {
2378 udelay(10);
2379 mb();
2380 if (rb_mmio(GREG_INPUT_STATUS1_R) & 0x08)
2381 break;
2382 }
2383
2384 wl_mmio(0x8200, 0x0000c000); /* fifo control (0x00110400 ?) */
2385 wcrt(CRT_ID_EXT_MISC_CNTL_2, cr67);
2386
2387 /* enable video */
2388
2389 tmp = rb_mmio(ACT_ADDRESS_RESET);
2390 wb_mmio(ACT_ADDRESS_W, ((bpp == 8) ? 0x20 : 0x00)); /* set b5, ENB PLT in attr idx reg) */
2391 tmp = rb_mmio(ACT_ADDRESS_RESET);
2392
2393 /* turn gfx on again */
2394
2395 gfx_on_off(0);
2396
2397 /* pass-through */
2398
2399 SetVSwitch(1); /* cv3d */
2400
2401 DUMP;
2402 DPRINTK("EXIT\n");
2403 }
2404
2405 static inline void gfx_on_off(int toggle)
2406 {
2407 unsigned char tmp;
2408
2409 DPRINTK("ENTER gfx %s\n", (toggle ? "off" : "on"));
2410
2411 toggle = (toggle & 0x01) << 5;
2412 tmp = rseq(SEQ_ID_CLOCKING_MODE) & (~(0x01 << 5));
2413 wseq(SEQ_ID_CLOCKING_MODE, tmp | toggle);
2414
2415 DPRINTK("EXIT\n");
2416 }
2417
2418 #if defined (VIRGEFBDUMP)
2419
2420 /*
2421 * Dump board registers
2422 */
2423
2424 static void cv64_dump(void)
2425 {
2426 int i;
2427 u8 c, b;
2428 u16 w;
2429 u32 l;
2430
2431 /* crt, seq, gfx and atr regs */
2432
2433 SelectMMIO;
2434
2435 printk("\n");
2436 for (i = 0; i <= 0x6f; i++) {
2437 wb_mmio(CRT_ADDRESS, i);
2438 printk("crt idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(CRT_ADDRESS_R));
2439 }
2440 for (i = 0; i <= 0x1c; i++) {
2441 wb_mmio(SEQ_ADDRESS, i);
2442 printk("seq idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(SEQ_ADDRESS_R));
2443 }
2444 for (i = 0; i <= 8; i++) {
2445 wb_mmio(GCT_ADDRESS, i);
2446 printk("gfx idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(GCT_ADDRESS_R));
2447 }
2448 for (i = 0; i <= 0x14; i++) {
2449 c = rb_mmio(ACT_ADDRESS_RESET);
2450 wb_mmio(ACT_ADDRESS_W, i);
2451 printk("atr idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(ACT_ADDRESS_R));
2452 }
2453
2454 /* re-enable video access to palette */
2455
2456 c = rb_mmio(ACT_ADDRESS_RESET);
2457 udelay(10);
2458 wb_mmio(ACT_ADDRESS_W, 0x20);
2459 c = rb_mmio(ACT_ADDRESS_RESET);
2460 udelay(10);
2461
2462 /* general regs */
2463
2464 printk("0x3cc(w 0x3c2) : 0x%2.2x\n", rb_mmio(0x3cc)); /* GREG_MISC_OUTPUT READ */
2465 printk("0x3c2(-------) : 0x%2.2x\n", rb_mmio(0x3c2)); /* GREG_INPUT_STATUS 0 READ */
2466 printk("0x3c3(w 0x3c3) : 0x%2.2x\n", rb_vgaio(0x3c3)); /* GREG_VIDEO_SUBS_ENABLE */
2467 printk("0x3ca(w 0x3da) : 0x%2.2x\n", rb_vgaio(0x3ca)); /* GREG_FEATURE_CONTROL read */
2468 printk("0x3da(-------) : 0x%2.2x\n", rb_mmio(0x3da)); /* GREG_INPUT_STATUS 1 READ */
2469
2470 /* engine regs */
2471
2472 for (i = 0x8180; i <= 0x8200; i = i + 4)
2473 printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
2474
2475 i = 0x8504;
2476 printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
2477 i = 0x850c;
2478 printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
2479 for (i = 0xa4d4; i <= 0xa50c; i = i + 4)
2480 printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
2481
2482 /* PCI regs */
2483
2484 SelectCFG;
2485
2486 for (c = 0; c < 0x08; c = c + 2) {
2487 w = (*((u16 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 2)));
2488 printk("pci 0x%2.2x : 0x%4.4x\n", c, w);
2489 }
2490 c = 8;
2491 l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
2492 printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
2493 c = 0x0d;
2494 b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
2495 printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
2496 c = 0x10;
2497 l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
2498 printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
2499 c = 0x30;
2500 l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
2501 printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
2502 c = 0x3c;
2503 b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
2504 printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
2505 c = 0x3d;
2506 b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
2507 printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
2508 c = 0x3e;
2509 w = (*((u16 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 2)));
2510 printk("pci 0x%2.2x : 0x%4.4x\n", c, w);
2511 SelectMMIO;
2512 }
2513 #endif