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[PATCH] fbdev driver for S3 Trio/Virge
[linux-2.6/cjktty.git] / drivers / video / retz3fb.c
blobbc7ffc84e1855cf0276b1a6e0470a26cf8abb184
1 /*
2 * Linux/drivers/video/retz3fb.c -- RetinaZ3 frame buffer device
3 *
4 * Copyright (C) 1997 Jes Sorensen
5 *
6 * This file is based on the CyberVision64 frame buffer device and
7 * the generic Cirrus Logic driver.
8 *
9 * cyberfb.c: Copyright (C) 1996 Martin Apel,
10 * Geert Uytterhoeven
11 * clgen.c: Copyright (C) 1996 Frank Neumann
12 *
13 * History:
14 * - 22 Jan 97: Initial work
15 * - 14 Feb 97: Screen initialization works somewhat, still only
16 * 8-bit packed pixel is supported.
17 *
18 * This file is subject to the terms and conditions of the GNU General Public
19 * License. See the file COPYING in the main directory of this archive
20 * for more details.
21 */
22
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/errno.h>
26 #include <linux/string.h>
27 #include <linux/mm.h>
28 #include <linux/slab.h>
29 #include <linux/delay.h>
30 #include <linux/fb.h>
31 #include <linux/zorro.h>
32 #include <linux/init.h>
33
34 #include <asm/uaccess.h>
35 #include <asm/system.h>
36 #include <asm/irq.h>
37 #include <asm/pgtable.h>
38 #include <asm/io.h>
39
40 #include <video/fbcon.h>
41 #include <video/fbcon-cfb8.h>
42 #include <video/fbcon-cfb16.h>
43
44 #include "retz3fb.h"
45
46 /* #define DEBUG if(1) */
47 #define DEBUG if(0)
48
49 /*
50 * Reserve space for one pattern line.
51 *
52 * For the time being we only support 4MB boards!
53 */
54
55 #define PAT_MEM_SIZE 16*3
56 #define PAT_MEM_OFF (4*1024*1024 - PAT_MEM_SIZE)
57
58 struct retz3fb_par {
59 int xres;
60 int yres;
61 int xres_vir;
62 int yres_vir;
63 int xoffset;
64 int yoffset;
65 int bpp;
66
67 struct fb_bitfield red;
68 struct fb_bitfield green;
69 struct fb_bitfield blue;
70 struct fb_bitfield transp;
71
72 int pixclock;
73 int left_margin; /* time from sync to picture */
74 int right_margin; /* time from picture to sync */
75 int upper_margin; /* time from sync to picture */
76 int lower_margin;
77 int hsync_len; /* length of horizontal sync */
78 int vsync_len; /* length of vertical sync */
79 int vmode;
80
81 int accel;
82 };
83
84 struct display_data {
85 long h_total; /* Horizontal Total */
86 long h_sstart; /* Horizontal Sync Start */
87 long h_sstop; /* Horizontal Sync Stop */
88 long h_bstart; /* Horizontal Blank Start */
89 long h_bstop; /* Horizontal Blank Stop */
90 long h_dispend; /* Horizontal Display End */
91 long v_total; /* Vertical Total */
92 long v_sstart; /* Vertical Sync Start */
93 long v_sstop; /* Vertical Sync Stop */
94 long v_bstart; /* Vertical Blank Start */
95 long v_bstop; /* Vertical Blank Stop */
96 long v_dispend; /* Horizontal Display End */
97 };
98
99 struct retz3_fb_info {
100 struct fb_info info;
101 unsigned char *base;
102 unsigned char *fbmem;
103 unsigned long fbsize;
104 volatile unsigned char *regs;
105 unsigned long physfbmem;
106 unsigned long physregs;
107 int current_par_valid; /* set to 0 by memset */
108 int blitbusy;
109 struct display disp;
110 struct retz3fb_par current_par;
111 unsigned char color_table [256][3];
112 };
113
114
115 static char fontname[40] __initdata = { 0 };
116
117 #define retz3info(info) ((struct retz3_fb_info *)(info))
118 #define fbinfo(info) ((struct fb_info *)(info))
119
120
121 /*
122 * Frame Buffer Name
123 */
124
125 static char retz3fb_name[16] = "RetinaZ3";
126
127
128 /*
129 * A small info on how to convert XFree86 timing values into fb
130 * timings - by Frank Neumann:
131 *
132 An XFree86 mode line consists of the following fields:
133 "800x600" 50 800 856 976 1040 600 637 643 666
134 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
135
136 The fields in the fb_var_screeninfo structure are:
137 unsigned long pixclock; * pixel clock in ps (pico seconds) *
138 unsigned long left_margin; * time from sync to picture *
139 unsigned long right_margin; * time from picture to sync *
140 unsigned long upper_margin; * time from sync to picture *
141 unsigned long lower_margin;
142 unsigned long hsync_len; * length of horizontal sync *
143 unsigned long vsync_len; * length of vertical sync *
144
145 1) Pixelclock:
146 xfree: in MHz
147 fb: In Picoseconds (ps)
148
149 pixclock = 1000000 / DCF
150
151 2) horizontal timings:
152 left_margin = HFL - SH2
153 right_margin = SH1 - HR
154 hsync_len = SH2 - SH1
155
156 3) vertical timings:
157 upper_margin = VFL - SV2
158 lower_margin = SV1 - VR
159 vsync_len = SV2 - SV1
160
161 Good examples for VESA timings can be found in the XFree86 source tree,
162 under "programs/Xserver/hw/xfree86/doc/modeDB.txt".
163 */
164
165 /*
166 * Predefined Video Modes
167 */
168
169 static struct {
170 const char *name;
171 struct fb_var_screeninfo var;
172 } retz3fb_predefined[] __initdata = {
173 /*
174 * NB: it is very important to adjust the pixel-clock to the color-depth.
175 */
176
177 {
178 "640x480", { /* 640x480, 8 bpp */
179 640, 480, 640, 480, 0, 0, 8, 0,
180 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
181 0, 0, -1, -1, FB_ACCEL_NONE, 39722, 48, 16, 33, 10, 96, 2,
182 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
183 }
184 },
185 /*
186 ModeLine "800x600" 36 800 824 896 1024 600 601 603 625
187 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
188 */
189 {
190 "800x600", { /* 800x600, 8 bpp */
191 800, 600, 800, 600, 0, 0, 8, 0,
192 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
193 0, 0, -1, -1, FB_ACCELF_TEXT, 27778, 64, 24, 22, 1, 120, 2,
194 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
195 }
196 },
197 {
198 "800x600-60", { /* 800x600, 8 bpp */
199 800, 600, 800, 600, 0, 0, 8, 0,
200 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
201 0, 0, -1, -1, FB_ACCELF_TEXT, 25000, 88, 40, 23, 1, 128, 4,
202 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
203 }
204 },
205 {
206 "800x600-70", { /* 800x600, 8 bpp */
207 800, 600, 800, 600, 0, 0, 8, 0,
208 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
209 0, 0, -1, -1, FB_ACCELF_TEXT, 22272, 40, 24, 15, 9, 144, 12,
210 FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED
211 }
212 },
213 /*
214 ModeLine "1024x768i" 45 1024 1064 1224 1264 768 777 785 817 interlace
215 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
216 */
217 {
218 "1024x768i", { /* 1024x768, 8 bpp, interlaced */
219 1024, 768, 1024, 768, 0, 0, 8, 0,
220 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
221 0, 0, -1, -1, FB_ACCELF_TEXT, 22222, 40, 40, 32, 9, 160, 8,
222 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED
223 }
224 },
225 {
226 "1024x768", {
227 1024, 768, 1024, 768, 0, 0, 8, 0,
228 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
229 0, 0, -1, -1, FB_ACCEL_NONE, 12500, 92, 112, 31, 2, 204, 4,
230 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
231 }
232 },
233 {
234 "640x480-16", { /* 640x480, 16 bpp */
235 640, 480, 640, 480, 0, 0, 16, 0,
236 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
237 0, 0, -1, -1, 0, 38461/2, 28, 32, 12, 10, 96, 2,
238 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
239 }
240 },
241 {
242 "640x480-24", { /* 640x480, 24 bpp */
243 640, 480, 640, 480, 0, 0, 24, 0,
244 {8, 8, 8}, {8, 8, 8}, {8, 8, 8}, {0, 0, 0},
245 0, 0, -1, -1, 0, 38461/3, 28, 32, 12, 10, 96, 2,
246 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
247 }
248 },
249 };
250
251
252 #define NUM_TOTAL_MODES ARRAY_SIZE(retz3fb_predefined)
253
254 static struct fb_var_screeninfo retz3fb_default;
255
256 static int z3fb_inverse = 0;
257 static int z3fb_mode __initdata = 0;
258
259
260 /*
261 * Interface used by the world
262 */
263
264 int retz3fb_setup(char *options);
265
266 static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
267 struct fb_info *info);
268 static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
269 struct fb_info *info);
270 static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
271 struct fb_info *info);
272 static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
273 struct fb_info *info);
274 static int retz3fb_setcolreg(unsigned int regno, unsigned int red,
275 unsigned int green, unsigned int blue,
276 unsigned int transp, struct fb_info *info);
277 static int retz3fb_blank(int blank, struct fb_info *info);
278
279
280 /*
281 * Interface to the low level console driver
282 */
283
284 int retz3fb_init(void);
285 static int z3fb_switch(int con, struct fb_info *info);
286 static int z3fb_updatevar(int con, struct fb_info *info);
287
288
289 /*
290 * Text console acceleration
291 */
292
293 #ifdef FBCON_HAS_CFB8
294 static struct display_switch fbcon_retz3_8;
295 #endif
296
297
298 /*
299 * Accelerated Functions used by the low level console driver
300 */
301
302 static void retz3_bitblt(struct display *p,
303 unsigned short curx, unsigned short cury, unsigned
304 short destx, unsigned short desty, unsigned short
305 width, unsigned short height, unsigned short cmd,
306 unsigned short mask);
307
308 /*
309 * Hardware Specific Routines
310 */
311
312 static int retz3_encode_fix(struct fb_info *info,
313 struct fb_fix_screeninfo *fix,
314 struct retz3fb_par *par);
315 static int retz3_decode_var(struct fb_var_screeninfo *var,
316 struct retz3fb_par *par);
317 static int retz3_encode_var(struct fb_var_screeninfo *var,
318 struct retz3fb_par *par);
319 static int retz3_getcolreg(unsigned int regno, unsigned int *red,
320 unsigned int *green, unsigned int *blue,
321 unsigned int *transp, struct fb_info *info);
322
323 /*
324 * Internal routines
325 */
326
327 static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par);
328 static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par);
329 static int do_fb_set_var(struct fb_info *info,
330 struct fb_var_screeninfo *var, int isactive);
331 static void retz3fb_set_disp(int con, struct fb_info *info);
332 static int get_video_mode(const char *name);
333
334
335 /* -------------------- Hardware specific routines ------------------------- */
336
337 static unsigned short find_fq(unsigned int freq)
338 {
339 unsigned long f;
340 long tmp;
341 long prev = 0x7fffffff;
342 long n2, n1 = 3;
343 unsigned long m;
344 unsigned short res = 0;
345
346 if (freq <= 31250000)
347 n2 = 3;
348 else if (freq <= 62500000)
349 n2 = 2;
350 else if (freq <= 125000000)
351 n2 = 1;
352 else if (freq <= 250000000)
353 n2 = 0;
354 else
355 return 0;
356
357
358 do {
359 f = freq >> (10 - n2);
360
361 m = (f * n1) / (14318180/1024);
362
363 if (m > 129)
364 break;
365
366 tmp = (((m * 14318180) >> n2) / n1) - freq;
367 if (tmp < 0)
368 tmp = -tmp;
369
370 if (tmp < prev) {
371 prev = tmp;
372 res = (((n2 << 5) | (n1-2)) << 8) | (m-2);
373 }
374
375 } while ( (++n1) <= 21);
376
377 return res;
378 }
379
380
381 static int retz3_set_video(struct fb_info *info,
382 struct fb_var_screeninfo *var,
383 struct retz3fb_par *par)
384 {
385 volatile unsigned char *regs = retz3info(info)->regs;
386 unsigned int freq;
387
388 int xres, hfront, hsync, hback;
389 int yres, vfront, vsync, vback;
390 unsigned char tmp;
391 unsigned short best_freq;
392 struct display_data data;
393
394 short clocksel = 0; /* Apparantly this is always zero */
395
396 int bpp = var->bits_per_pixel;
397
398 /*
399 * XXX
400 */
401 if (bpp == 24)
402 return 0;
403
404 if ((bpp != 8) && (bpp != 16) && (bpp != 24))
405 return -EFAULT;
406
407 par->xoffset = 0;
408 par->yoffset = 0;
409
410 xres = var->xres * bpp / 4;
411 hfront = var->right_margin * bpp / 4;
412 hsync = var->hsync_len * bpp / 4;
413 hback = var->left_margin * bpp / 4;
414
415 if (var->vmode & FB_VMODE_DOUBLE)
416 {
417 yres = var->yres * 2;
418 vfront = var->lower_margin * 2;
419 vsync = var->vsync_len * 2;
420 vback = var->upper_margin * 2;
421 }
422 else if (var->vmode & FB_VMODE_INTERLACED)
423 {
424 yres = (var->yres + 1) / 2;
425 vfront = (var->lower_margin + 1) / 2;
426 vsync = (var->vsync_len + 1) / 2;
427 vback = (var->upper_margin + 1) / 2;
428 }
429 else
430 {
431 yres = var->yres; /* -1 ? */
432 vfront = var->lower_margin;
433 vsync = var->vsync_len;
434 vback = var->upper_margin;
435 }
436
437 data.h_total = (hback / 8) + (xres / 8)
438 + (hfront / 8) + (hsync / 8) - 1 /* + 1 */;
439 data.h_dispend = ((xres + bpp - 1)/ 8) - 1;
440 data.h_bstart = xres / 8 - 1 /* + 1 */;
441
442 data.h_bstop = data.h_total+1 + 2 + 1;
443 data.h_sstart = (xres / 8) + (hfront / 8) + 1;
444 data.h_sstop = (xres / 8) + (hfront / 8) + (hsync / 8) + 1;
445
446 data.v_total = yres + vfront + vsync + vback - 1;
447
448 data.v_dispend = yres - 1;
449 data.v_bstart = yres - 1;
450
451 data.v_bstop = data.v_total;
452 data.v_sstart = yres + vfront - 1 - 2;
453 data.v_sstop = yres + vfront + vsync - 1;
454
455 #if 0 /* testing */
456
457 printk("HBS: %i\n", data.h_bstart);
458 printk("HSS: %i\n", data.h_sstart);
459 printk("HSE: %i\n", data.h_sstop);
460 printk("HBE: %i\n", data.h_bstop);
461 printk("HT: %i\n", data.h_total);
462
463 printk("hsync: %i\n", hsync);
464 printk("hfront: %i\n", hfront);
465 printk("hback: %i\n", hback);
466
467 printk("VBS: %i\n", data.v_bstart);
468 printk("VSS: %i\n", data.v_sstart);
469 printk("VSE: %i\n", data.v_sstop);
470 printk("VBE: %i\n", data.v_bstop);
471 printk("VT: %i\n", data.v_total);
472
473 printk("vsync: %i\n", vsync);
474 printk("vfront: %i\n", vfront);
475 printk("vback: %i\n", vback);
476 #endif
477
478 if (data.v_total >= 1024)
479 printk(KERN_ERR "MAYDAY: v_total >= 1024; bailing out!\n");
480
481 reg_w(regs, GREG_MISC_OUTPUT_W, 0xe3 | ((clocksel & 3) * 0x04));
482 reg_w(regs, GREG_FEATURE_CONTROL_W, 0x00);
483
484 seq_w(regs, SEQ_RESET, 0x00);
485 seq_w(regs, SEQ_RESET, 0x03); /* reset sequencer logic */
486
487 /*
488 * CLOCKING_MODE bits:
489 * 2: This one is only set for certain text-modes, wonder if
490 * it may be for EGA-lines? (it was referred to as CLKDIV2)
491 * (The CL drivers sets it to 0x21 with the comment:
492 * FullBandwidth (video off) and 8/9 dot clock)
493 */
494 seq_w(regs, SEQ_CLOCKING_MODE, 0x01 | 0x00 /* 0x08 */);
495
496 seq_w(regs, SEQ_MAP_MASK, 0x0f); /* enable writing to plane 0-3 */
497 seq_w(regs, SEQ_CHAR_MAP_SELECT, 0x00); /* doesn't matter in gfx-mode */
498 seq_w(regs, SEQ_MEMORY_MODE, 0x06); /* CL driver says 0x0e for 256 col mode*/
499 seq_w(regs, SEQ_RESET, 0x01);
500 seq_w(regs, SEQ_RESET, 0x03);
501
502 seq_w(regs, SEQ_EXTENDED_ENABLE, 0x05);
503
504 seq_w(regs, SEQ_CURSOR_CONTROL, 0x00); /* disable cursor */
505 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
506 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
507 seq_w(regs, SEQ_LINEAR_0, 0x4a);
508 seq_w(regs, SEQ_LINEAR_1, 0x00);
509
510 seq_w(regs, SEQ_SEC_HOST_OFF_HI, 0x00);
511 seq_w(regs, SEQ_SEC_HOST_OFF_LO, 0x00);
512 seq_w(regs, SEQ_EXTENDED_MEM_ENA, 0x3 | 0x4 | 0x10 | 0x40);
513
514 /*
515 * The lower 4 bits (0-3) are used to set the font-width for
516 * text-mode - DON'T try to set this for gfx-mode.
517 */
518 seq_w(regs, SEQ_EXT_CLOCK_MODE, 0x10);
519 seq_w(regs, SEQ_EXT_VIDEO_ADDR, 0x03);
520
521 /*
522 * Extended Pixel Control:
523 * bit 0: text-mode=0, gfx-mode=1 (Graphics Byte ?)
524 * bit 1: (Packed/Nibble Pixel Format ?)
525 * bit 4-5: depth, 0=1-8bpp, 1=9-16bpp, 2=17-24bpp
526 */
527 seq_w(regs, SEQ_EXT_PIXEL_CNTL, 0x01 | (((bpp / 8) - 1) << 4));
528
529 seq_w(regs, SEQ_BUS_WIDTH_FEEDB, 0x04);
530 seq_w(regs, SEQ_COLOR_EXP_WFG, 0x01);
531 seq_w(regs, SEQ_COLOR_EXP_WBG, 0x00);
532 seq_w(regs, SEQ_EXT_RW_CONTROL, 0x00);
533 seq_w(regs, SEQ_MISC_FEATURE_SEL, (0x51 | (clocksel & 8)));
534 seq_w(regs, SEQ_COLOR_KEY_CNTL, 0x40);
535 seq_w(regs, SEQ_COLOR_KEY_MATCH0, 0x00);
536 seq_w(regs, SEQ_COLOR_KEY_MATCH1, 0x00);
537 seq_w(regs, SEQ_COLOR_KEY_MATCH2, 0x00);
538 seq_w(regs, SEQ_CRC_CONTROL, 0x00);
539 seq_w(regs, SEQ_PERF_SELECT, 0x10);
540 seq_w(regs, SEQ_ACM_APERTURE_1, 0x00);
541 seq_w(regs, SEQ_ACM_APERTURE_2, 0x30);
542 seq_w(regs, SEQ_ACM_APERTURE_3, 0x00);
543 seq_w(regs, SEQ_MEMORY_MAP_CNTL, 0x03);
544
545
546 /* unlock register CRT0..CRT7 */
547 crt_w(regs, CRT_END_VER_RETR, (data.v_sstop & 0x0f) | 0x20);
548
549 /* Zuerst zu schreibende Werte nur per printk ausgeben */
550 DEBUG printk("CRT_HOR_TOTAL: %ld\n", data.h_total);
551 crt_w(regs, CRT_HOR_TOTAL, data.h_total & 0xff);
552
553 DEBUG printk("CRT_HOR_DISP_ENA_END: %ld\n", data.h_dispend);
554 crt_w(regs, CRT_HOR_DISP_ENA_END, (data.h_dispend) & 0xff);
555
556 DEBUG printk("CRT_START_HOR_BLANK: %ld\n", data.h_bstart);
557 crt_w(regs, CRT_START_HOR_BLANK, data.h_bstart & 0xff);
558
559 DEBUG printk("CRT_END_HOR_BLANK: 128+%ld\n", data.h_bstop % 32);
560 crt_w(regs, CRT_END_HOR_BLANK, 0x80 | (data.h_bstop & 0x1f));
561
562 DEBUG printk("CRT_START_HOR_RETR: %ld\n", data.h_sstart);
563 crt_w(regs, CRT_START_HOR_RETR, data.h_sstart & 0xff);
564
565 tmp = (data.h_sstop & 0x1f);
566 if (data.h_bstop & 0x20)
567 tmp |= 0x80;
568 DEBUG printk("CRT_END_HOR_RETR: %d\n", tmp);
569 crt_w(regs, CRT_END_HOR_RETR, tmp);
570
571 DEBUG printk("CRT_VER_TOTAL: %ld\n", data.v_total & 0xff);
572 crt_w(regs, CRT_VER_TOTAL, (data.v_total & 0xff));
573
574 tmp = 0x10; /* LineCompare bit #9 */
575 if (data.v_total & 256)
576 tmp |= 0x01;
577 if (data.v_dispend & 256)
578 tmp |= 0x02;
579 if (data.v_sstart & 256)
580 tmp |= 0x04;
581 if (data.v_bstart & 256)
582 tmp |= 0x08;
583 if (data.v_total & 512)
584 tmp |= 0x20;
585 if (data.v_dispend & 512)
586 tmp |= 0x40;
587 if (data.v_sstart & 512)
588 tmp |= 0x80;
589 DEBUG printk("CRT_OVERFLOW: %d\n", tmp);
590 crt_w(regs, CRT_OVERFLOW, tmp);
591
592 crt_w(regs, CRT_PRESET_ROW_SCAN, 0x00); /* not CL !!! */
593
594 tmp = 0x40; /* LineCompare bit #8 */
595 if (data.v_bstart & 512)
596 tmp |= 0x20;
597 if (var->vmode & FB_VMODE_DOUBLE)
598 tmp |= 0x80;
599 DEBUG printk("CRT_MAX_SCAN_LINE: %d\n", tmp);
600 crt_w(regs, CRT_MAX_SCAN_LINE, tmp);
601
602 crt_w(regs, CRT_CURSOR_START, 0x00);
603 crt_w(regs, CRT_CURSOR_END, 8 & 0x1f); /* font height */
604
605 crt_w(regs, CRT_START_ADDR_HIGH, 0x00);
606 crt_w(regs, CRT_START_ADDR_LOW, 0x00);
607
608 crt_w(regs, CRT_CURSOR_LOC_HIGH, 0x00);
609 crt_w(regs, CRT_CURSOR_LOC_LOW, 0x00);
610
611 DEBUG printk("CRT_START_VER_RETR: %ld\n", data.v_sstart & 0xff);
612 crt_w(regs, CRT_START_VER_RETR, (data.v_sstart & 0xff));
613
614 #if 1
615 /* 5 refresh cycles per scanline */
616 DEBUG printk("CRT_END_VER_RETR: 64+32+%ld\n", data.v_sstop % 16);
617 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 0x40 | 0x20));
618 #else
619 DEBUG printk("CRT_END_VER_RETR: 128+32+%ld\n", data.v_sstop % 16);
620 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 128 | 32));
621 #endif
622 DEBUG printk("CRT_VER_DISP_ENA_END: %ld\n", data.v_dispend & 0xff);
623 crt_w(regs, CRT_VER_DISP_ENA_END, (data.v_dispend & 0xff));
624
625 DEBUG printk("CRT_START_VER_BLANK: %ld\n", data.v_bstart & 0xff);
626 crt_w(regs, CRT_START_VER_BLANK, (data.v_bstart & 0xff));
627
628 DEBUG printk("CRT_END_VER_BLANK: %ld\n", data.v_bstop & 0xff);
629 crt_w(regs, CRT_END_VER_BLANK, (data.v_bstop & 0xff));
630
631 DEBUG printk("CRT_MODE_CONTROL: 0xe3\n");
632 crt_w(regs, CRT_MODE_CONTROL, 0xe3);
633
634 DEBUG printk("CRT_LINE_COMPARE: 0xff\n");
635 crt_w(regs, CRT_LINE_COMPARE, 0xff);
636
637 tmp = (var->xres_virtual / 8) * (bpp / 8);
638 crt_w(regs, CRT_OFFSET, tmp);
639
640 crt_w(regs, CRT_UNDERLINE_LOC, 0x07); /* probably font-height - 1 */
641
642 tmp = 0x20; /* Enable extended end bits */
643 if (data.h_total & 0x100)
644 tmp |= 0x01;
645 if ((data.h_dispend) & 0x100)
646 tmp |= 0x02;
647 if (data.h_bstart & 0x100)
648 tmp |= 0x04;
649 if (data.h_sstart & 0x100)
650 tmp |= 0x08;
651 if (var->vmode & FB_VMODE_INTERLACED)
652 tmp |= 0x10;
653 DEBUG printk("CRT_EXT_HOR_TIMING1: %d\n", tmp);
654 crt_w(regs, CRT_EXT_HOR_TIMING1, tmp);
655
656 tmp = 0x00;
657 if (((var->xres_virtual / 8) * (bpp / 8)) & 0x100)
658 tmp |= 0x10;
659 crt_w(regs, CRT_EXT_START_ADDR, tmp);
660
661 tmp = 0x00;
662 if (data.h_total & 0x200)
663 tmp |= 0x01;
664 if ((data.h_dispend) & 0x200)
665 tmp |= 0x02;
666 if (data.h_bstart & 0x200)
667 tmp |= 0x04;
668 if (data.h_sstart & 0x200)
669 tmp |= 0x08;
670 tmp |= ((data.h_bstop & 0xc0) >> 2);
671 tmp |= ((data.h_sstop & 0x60) << 1);
672 crt_w(regs, CRT_EXT_HOR_TIMING2, tmp);
673 DEBUG printk("CRT_EXT_HOR_TIMING2: %d\n", tmp);
674
675 tmp = 0x10; /* Line compare bit 10 */
676 if (data.v_total & 0x400)
677 tmp |= 0x01;
678 if ((data.v_dispend) & 0x400)
679 tmp |= 0x02;
680 if (data.v_bstart & 0x400)
681 tmp |= 0x04;
682 if (data.v_sstart & 0x400)
683 tmp |= 0x08;
684 tmp |= ((data.v_bstop & 0x300) >> 3);
685 if (data.v_sstop & 0x10)
686 tmp |= 0x80;
687 crt_w(regs, CRT_EXT_VER_TIMING, tmp);
688 DEBUG printk("CRT_EXT_VER_TIMING: %d\n", tmp);
689
690 crt_w(regs, CRT_MONITOR_POWER, 0x00);
691
692 /*
693 * Convert from ps to Hz.
694 */
695 freq = 2000000000 / var->pixclock;
696 freq = freq * 500;
697
698 best_freq = find_fq(freq);
699 pll_w(regs, 0x02, best_freq);
700 best_freq = find_fq(61000000);
701 pll_w(regs, 0x0a, best_freq);
702 pll_w(regs, 0x0e, 0x22);
703
704 gfx_w(regs, GFX_SET_RESET, 0x00);
705 gfx_w(regs, GFX_ENABLE_SET_RESET, 0x00);
706 gfx_w(regs, GFX_COLOR_COMPARE, 0x00);
707 gfx_w(regs, GFX_DATA_ROTATE, 0x00);
708 gfx_w(regs, GFX_READ_MAP_SELECT, 0x00);
709 gfx_w(regs, GFX_GRAPHICS_MODE, 0x00);
710 gfx_w(regs, GFX_MISC, 0x05);
711 gfx_w(regs, GFX_COLOR_XCARE, 0x0f);
712 gfx_w(regs, GFX_BITMASK, 0xff);
713
714 reg_r(regs, ACT_ADDRESS_RESET);
715 attr_w(regs, ACT_PALETTE0 , 0x00);
716 attr_w(regs, ACT_PALETTE1 , 0x01);
717 attr_w(regs, ACT_PALETTE2 , 0x02);
718 attr_w(regs, ACT_PALETTE3 , 0x03);
719 attr_w(regs, ACT_PALETTE4 , 0x04);
720 attr_w(regs, ACT_PALETTE5 , 0x05);
721 attr_w(regs, ACT_PALETTE6 , 0x06);
722 attr_w(regs, ACT_PALETTE7 , 0x07);
723 attr_w(regs, ACT_PALETTE8 , 0x08);
724 attr_w(regs, ACT_PALETTE9 , 0x09);
725 attr_w(regs, ACT_PALETTE10, 0x0a);
726 attr_w(regs, ACT_PALETTE11, 0x0b);
727 attr_w(regs, ACT_PALETTE12, 0x0c);
728 attr_w(regs, ACT_PALETTE13, 0x0d);
729 attr_w(regs, ACT_PALETTE14, 0x0e);
730 attr_w(regs, ACT_PALETTE15, 0x0f);
731 reg_r(regs, ACT_ADDRESS_RESET);
732
733 attr_w(regs, ACT_ATTR_MODE_CNTL, 0x09); /* 0x01 for CL */
734
735 attr_w(regs, ACT_OVERSCAN_COLOR, 0x00);
736 attr_w(regs, ACT_COLOR_PLANE_ENA, 0x0f);
737 attr_w(regs, ACT_HOR_PEL_PANNING, 0x00);
738 attr_w(regs, ACT_COLOR_SELECT, 0x00);
739
740 reg_r(regs, ACT_ADDRESS_RESET);
741 reg_w(regs, ACT_DATA, 0x20);
742
743 reg_w(regs, VDAC_MASK, 0xff);
744
745 /*
746 * Extended palette addressing ???
747 */
748 switch (bpp){
749 case 8:
750 reg_w(regs, 0x83c6, 0x00);
751 break;
752 case 16:
753 reg_w(regs, 0x83c6, 0x60);
754 break;
755 case 24:
756 reg_w(regs, 0x83c6, 0xe0);
757 break;
758 default:
759 printk(KERN_INFO "Illegal color-depth: %i\n", bpp);
760 }
761
762 reg_w(regs, VDAC_ADDRESS, 0x00);
763
764 seq_w(regs, SEQ_MAP_MASK, 0x0f );
765
766 return 0;
767 }
768
769
770 /*
771 * This function should fill in the `fix' structure based on the
772 * values in the `par' structure.
773 */
774
775 static int retz3_encode_fix(struct fb_info *info,
776 struct fb_fix_screeninfo *fix,
777 struct retz3fb_par *par)
778 {
779 struct retz3_fb_info *zinfo = retz3info(info);
780
781 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
782 strcpy(fix->id, retz3fb_name);
783 fix->smem_start = zinfo->physfbmem;
784 fix->smem_len = zinfo->fbsize;
785 fix->mmio_start = zinfo->physregs;
786 fix->mmio_len = 0x00c00000;
787
788 fix->type = FB_TYPE_PACKED_PIXELS;
789 fix->type_aux = 0;
790 if (par->bpp == 8)
791 fix->visual = FB_VISUAL_PSEUDOCOLOR;
792 else
793 fix->visual = FB_VISUAL_TRUECOLOR;
794
795 fix->xpanstep = 0;
796 fix->ypanstep = 0;
797 fix->ywrapstep = 0;
798 fix->line_length = 0;
799
800 fix->accel = FB_ACCEL_NCR_77C32BLT;
801
802 return 0;
803 }
804
805
806 /*
807 * Get the video params out of `var'. If a value doesn't fit, round
808 * it up, if it's too big, return -EINVAL.
809 */
810
811 static int retz3_decode_var(struct fb_var_screeninfo *var,
812 struct retz3fb_par *par)
813 {
814 par->xres = var->xres;
815 par->yres = var->yres;
816 par->xres_vir = var->xres_virtual;
817 par->yres_vir = var->yres_virtual;
818 par->bpp = var->bits_per_pixel;
819 par->pixclock = var->pixclock;
820 par->vmode = var->vmode;
821
822 par->red = var->red;
823 par->green = var->green;
824 par->blue = var->blue;
825 par->transp = var->transp;
826
827 par->left_margin = var->left_margin;
828 par->right_margin = var->right_margin;
829 par->upper_margin = var->upper_margin;
830 par->lower_margin = var->lower_margin;
831 par->hsync_len = var->hsync_len;
832 par->vsync_len = var->vsync_len;
833
834 if (var->accel_flags & FB_ACCELF_TEXT)
835 par->accel = FB_ACCELF_TEXT;
836 else
837 par->accel = 0;
838
839 return 0;
840 }
841
842
843 /*
844 * Fill the `var' structure based on the values in `par' and maybe
845 * other values read out of the hardware.
846 */
847
848 static int retz3_encode_var(struct fb_var_screeninfo *var,
849 struct retz3fb_par *par)
850 {
851 memset(var, 0, sizeof(struct fb_var_screeninfo));
852 var->xres = par->xres;
853 var->yres = par->yres;
854 var->xres_virtual = par->xres_vir;
855 var->yres_virtual = par->yres_vir;
856 var->xoffset = 0;
857 var->yoffset = 0;
858
859 var->bits_per_pixel = par->bpp;
860 var->grayscale = 0;
861
862 var->red = par->red;
863 var->green = par->green;
864 var->blue = par->blue;
865 var->transp = par->transp;
866
867 var->nonstd = 0;
868 var->activate = 0;
869
870 var->height = -1;
871 var->width = -1;
872
873 var->accel_flags = (par->accel && par->bpp == 8) ? FB_ACCELF_TEXT : 0;
874
875 var->pixclock = par->pixclock;
876
877 var->sync = 0; /* ??? */
878 var->left_margin = par->left_margin;
879 var->right_margin = par->right_margin;
880 var->upper_margin = par->upper_margin;
881 var->lower_margin = par->lower_margin;
882 var->hsync_len = par->hsync_len;
883 var->vsync_len = par->vsync_len;
884
885 var->vmode = par->vmode;
886 return 0;
887 }
888
889
890 /*
891 * Set a single color register. Return != 0 for invalid regno.
892 */
893
894 static int retz3fb_setcolreg(unsigned int regno, unsigned int red,
895 unsigned int green, unsigned int blue,
896 unsigned int transp, struct fb_info *info)
897 {
898 struct retz3_fb_info *zinfo = retz3info(info);
899 volatile unsigned char *regs = zinfo->regs;
900
901 /* We'll get to this */
902
903 if (regno > 255)
904 return 1;
905
906 red >>= 10;
907 green >>= 10;
908 blue >>= 10;
909
910 zinfo->color_table[regno][0] = red;
911 zinfo->color_table[regno][1] = green;
912 zinfo->color_table[regno][2] = blue;
913
914 reg_w(regs, VDAC_ADDRESS_W, regno);
915 reg_w(regs, VDAC_DATA, red);
916 reg_w(regs, VDAC_DATA, green);
917 reg_w(regs, VDAC_DATA, blue);
918
919 return 0;
920 }
921
922
923 /*
924 * Read a single color register and split it into
925 * colors/transparent. Return != 0 for invalid regno.
926 */
927
928 static int retz3_getcolreg(unsigned int regno, unsigned int *red,
929 unsigned int *green, unsigned int *blue,
930 unsigned int *transp, struct fb_info *info)
931 {
932 struct retz3_fb_info *zinfo = retz3info(info);
933 int t;
934
935 if (regno > 255)
936 return 1;
937 t = zinfo->color_table[regno][0];
938 *red = (t<<10) | (t<<4) | (t>>2);
939 t = zinfo->color_table[regno][1];
940 *green = (t<<10) | (t<<4) | (t>>2);
941 t = zinfo->color_table[regno][2];
942 *blue = (t<<10) | (t<<4) | (t>>2);
943 *transp = 0;
944 return 0;
945 }
946
947
948 static inline void retz3_busy(struct display *p)
949 {
950 struct retz3_fb_info *zinfo = retz3info(p->fb_info);
951 volatile unsigned char *acm = zinfo->base + ACM_OFFSET;
952 unsigned char blt_status;
953
954 if (zinfo->blitbusy) {
955 do{
956 blt_status = *((acm) + (ACM_START_STATUS + 2));
957 }while ((blt_status & 1) == 0);
958 zinfo->blitbusy = 0;
959 }
960 }
961
962
963 static void retz3_bitblt (struct display *p,
964 unsigned short srcx, unsigned short srcy,
965 unsigned short destx, unsigned short desty,
966 unsigned short width, unsigned short height,
967 unsigned short cmd, unsigned short mask)
968 {
969 struct fb_var_screeninfo *var = &p->var;
970 struct retz3_fb_info *zinfo = retz3info(p->fb_info);
971 volatile unsigned long *acm = (unsigned long *)(zinfo->base + ACM_OFFSET);
972 unsigned long *pattern = (unsigned long *)(zinfo->fbmem + PAT_MEM_OFF);
973
974 unsigned short mod;
975 unsigned long tmp;
976 unsigned long pat, src, dst;
977
978 int i, xres_virtual = var->xres_virtual;
979 short bpp = (var->bits_per_pixel & 0xff);
980
981 if (bpp < 8)
982 bpp = 8;
983
984 tmp = mask | (mask << 16);
985
986 retz3_busy(p);
987
988 i = 0;
989 do{
990 *pattern++ = tmp;
991 }while(i++ < bpp/4);
992
993 tmp = cmd << 8;
994 *(acm + ACM_RASTEROP_ROTATION/4) = tmp;
995
996 mod = 0xc0c2;
997
998 pat = 8 * PAT_MEM_OFF;
999 dst = bpp * (destx + desty * xres_virtual);
1000
1001 /*
1002 * Source is not set for clear.
1003 */
1004 if ((cmd != Z3BLTclear) && (cmd != Z3BLTset)) {
1005 src = bpp * (srcx + srcy * xres_virtual);
1006
1007 if (destx > srcx) {
1008 mod &= ~0x8000;
1009 src += bpp * (width - 1);
1010 dst += bpp * (width - 1);
1011 pat += bpp * 2;
1012 }
1013 if (desty > srcy) {
1014 mod &= ~0x4000;
1015 src += bpp * (height - 1) * xres_virtual;
1016 dst += bpp * (height - 1) * xres_virtual;
1017 pat += bpp * 4;
1018 }
1019
1020 *(acm + ACM_SOURCE/4) = cpu_to_le32(src);
1021 }
1022
1023 *(acm + ACM_PATTERN/4) = cpu_to_le32(pat);
1024
1025 *(acm + ACM_DESTINATION/4) = cpu_to_le32(dst);
1026
1027 tmp = mod << 16;
1028 *(acm + ACM_CONTROL/4) = tmp;
1029
1030 tmp = width | (height << 16);
1031
1032 *(acm + ACM_BITMAP_DIMENSION/4) = cpu_to_le32(tmp);
1033
1034 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x00;
1035 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x01;
1036 zinfo->blitbusy = 1;
1037 }
1038
1039 #if 0
1040 /*
1041 * Move cursor to x, y
1042 */
1043 static void retz3_MoveCursor (unsigned short x, unsigned short y)
1044 {
1045 /* Guess we gotta deal with the cursor at some point */
1046 }
1047 #endif
1048
1049
1050 /*
1051 * Fill the hardware's `par' structure.
1052 */
1053
1054 static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par)
1055 {
1056 struct retz3_fb_info *zinfo = retz3info(info);
1057
1058 if (zinfo->current_par_valid)
1059 *par = zinfo->current_par;
1060 else
1061 retz3_decode_var(&retz3fb_default, par);
1062 }
1063
1064
1065 static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par)
1066 {
1067 struct retz3_fb_info *zinfo = retz3info(info);
1068
1069 zinfo->current_par = *par;
1070 zinfo->current_par_valid = 1;
1071 }
1072
1073
1074 static int do_fb_set_var(struct fb_info *info,
1075 struct fb_var_screeninfo *var, int isactive)
1076 {
1077 int err, activate;
1078 struct retz3fb_par par;
1079 struct retz3_fb_info *zinfo = retz3info(info);
1080
1081 if ((err = retz3_decode_var(var, &par)))
1082 return err;
1083 activate = var->activate;
1084
1085 /* XXX ... what to do about isactive ? */
1086
1087 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
1088 retz3fb_set_par(info, &par);
1089 retz3_encode_var(var, &par);
1090 var->activate = activate;
1091
1092 retz3_set_video(info, var, &zinfo->current_par);
1093
1094 return 0;
1095 }
1096
1097 /*
1098 * Get the Fixed Part of the Display
1099 */
1100
1101 static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
1102 struct fb_info *info)
1103 {
1104 struct retz3fb_par par;
1105 int error = 0;
1106
1107 if (con == -1)
1108 retz3fb_get_par(info, &par);
1109 else
1110 error = retz3_decode_var(&fb_display[con].var, &par);
1111 return(error ? error : retz3_encode_fix(info, fix, &par));
1112 }
1113
1114
1115 /*
1116 * Get the User Defined Part of the Display
1117 */
1118
1119 static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
1120 struct fb_info *info)
1121 {
1122 struct retz3fb_par par;
1123 int error = 0;
1124
1125 if (con == -1) {
1126 retz3fb_get_par(info, &par);
1127 error = retz3_encode_var(var, &par);
1128 } else
1129 *var = fb_display[con].var;
1130 return error;
1131 }
1132
1133
1134 static void retz3fb_set_disp(int con, struct fb_info *info)
1135 {
1136 struct fb_fix_screeninfo fix;
1137 struct display *display;
1138 struct retz3_fb_info *zinfo = retz3info(info);
1139
1140 if (con >= 0)
1141 display = &fb_display[con];
1142 else
1143 display = &zinfo->disp; /* used during initialization */
1144
1145 retz3fb_get_fix(&fix, con, info);
1146
1147 if (con == -1)
1148 con = 0;
1149
1150 display->visual = fix.visual;
1151 display->type = fix.type;
1152 display->type_aux = fix.type_aux;
1153 display->ypanstep = fix.ypanstep;
1154 display->ywrapstep = fix.ywrapstep;
1155 display->can_soft_blank = 1;
1156 display->inverse = z3fb_inverse;
1157
1158 /*
1159 * This seems to be about 20% faster.
1160 */
1161 display->scrollmode = SCROLL_YREDRAW;
1162
1163 switch (display->var.bits_per_pixel) {
1164 #ifdef FBCON_HAS_CFB8
1165 case 8:
1166 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1167 display->dispsw = &fbcon_retz3_8;
1168 retz3_set_video(info, &display->var, &zinfo->current_par);
1169 } else
1170 display->dispsw = &fbcon_cfb8;
1171 break;
1172 #endif
1173 #ifdef FBCON_HAS_CFB16
1174 case 16:
1175 display->dispsw = &fbcon_cfb16;
1176 break;
1177 #endif
1178 default:
1179 display->dispsw = &fbcon_dummy;
1180 break;
1181 }
1182 }
1183
1184
1185 /*
1186 * Set the User Defined Part of the Display
1187 */
1188
1189 static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
1190 struct fb_info *info)
1191 {
1192 int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
1193 struct display *display;
1194 struct retz3_fb_info *zinfo = retz3info(info);
1195
1196 if (con >= 0)
1197 display = &fb_display[con];
1198 else
1199 display = &zinfo->disp; /* used during initialization */
1200
1201 if ((err = do_fb_set_var(info, var, con == info->currcon)))
1202 return err;
1203 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
1204 oldxres = display->var.xres;
1205 oldyres = display->var.yres;
1206 oldvxres = display->var.xres_virtual;
1207 oldvyres = display->var.yres_virtual;
1208 oldbpp = display->var.bits_per_pixel;
1209 oldaccel = display->var.accel_flags;
1210 display->var = *var;
1211
1212 if (oldxres != var->xres || oldyres != var->yres ||
1213 oldvxres != var->xres_virtual ||
1214 oldvyres != var->yres_virtual ||
1215 oldbpp != var->bits_per_pixel ||
1216 oldaccel != var->accel_flags) {
1217
1218 struct fb_fix_screeninfo fix;
1219 retz3fb_get_fix(&fix, con, info);
1220
1221 display->visual = fix.visual;
1222 display->type = fix.type;
1223 display->type_aux = fix.type_aux;
1224 display->ypanstep = fix.ypanstep;
1225 display->ywrapstep = fix.ywrapstep;
1226 display->line_length = fix.line_length;
1227 display->can_soft_blank = 1;
1228 display->inverse = z3fb_inverse;
1229 switch (display->var.bits_per_pixel) {
1230 #ifdef FBCON_HAS_CFB8
1231 case 8:
1232 if (var->accel_flags & FB_ACCELF_TEXT) {
1233 display->dispsw = &fbcon_retz3_8;
1234 } else
1235 display->dispsw = &fbcon_cfb8;
1236 break;
1237 #endif
1238 #ifdef FBCON_HAS_CFB16
1239 case 16:
1240 display->dispsw = &fbcon_cfb16;
1241 break;
1242 #endif
1243 default:
1244 display->dispsw = &fbcon_dummy;
1245 break;
1246 }
1247 /*
1248 * We still need to find a way to tell the X
1249 * server that the video mem has been fiddled with
1250 * so it redraws the entire screen when switching
1251 * between X and a text console.
1252 */
1253 retz3_set_video(info, var, &zinfo->current_par);
1254
1255 if (info->changevar)
1256 (*info->changevar)(con);
1257 }
1258
1259 if (oldbpp != var->bits_per_pixel) {
1260 if ((err = fb_alloc_cmap(&display->cmap, 0, 0)))
1261 return err;
1262 do_install_cmap(con, info);
1263 }
1264 }
1265 return 0;
1266 }
1267
1268
1269 /*
1270 * Get the Colormap
1271 */
1272
1273 static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
1274 struct fb_info *info)
1275 {
1276 if (con == info->currcon) /* current console? */
1277 return(fb_get_cmap(cmap, kspc, retz3_getcolreg, info));
1278 else if (fb_display[con].cmap.len) /* non default colormap? */
1279 fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
1280 else
1281 fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
1282 cmap, kspc ? 0 : 2);
1283 return 0;
1284 }
1285
1286 /*
1287 * Blank the display.
1288 */
1289
1290 static int retz3fb_blank(int blank, struct fb_info *info)
1291 {
1292 struct retz3_fb_info *zinfo = retz3info(info);
1293 volatile unsigned char *regs = retz3info(info)->regs;
1294 short i;
1295
1296 if (blank)
1297 for (i = 0; i < 256; i++){
1298 reg_w(regs, VDAC_ADDRESS_W, i);
1299 reg_w(regs, VDAC_DATA, 0);
1300 reg_w(regs, VDAC_DATA, 0);
1301 reg_w(regs, VDAC_DATA, 0);
1302 }
1303 else
1304 for (i = 0; i < 256; i++){
1305 reg_w(regs, VDAC_ADDRESS_W, i);
1306 reg_w(regs, VDAC_DATA, zinfo->color_table[i][0]);
1307 reg_w(regs, VDAC_DATA, zinfo->color_table[i][1]);
1308 reg_w(regs, VDAC_DATA, zinfo->color_table[i][2]);
1309 }
1310 return 0;
1311 }
1312
1313 static struct fb_ops retz3fb_ops = {
1314 .owner = THIS_MODULE,
1315 .fb_get_fix = retz3fb_get_fix,
1316 .fb_get_var = retz3fb_get_var,
1317 .fb_set_var = retz3fb_set_var,
1318 .fb_get_cmap = retz3fb_get_cmap,
1319 .fb_set_cmap = gen_set_cmap,
1320 .fb_setcolreg = retz3fb_setcolreg,
1321 .fb_blank = retz3fb_blank,
1322 };
1323
1324 int __init retz3fb_setup(char *options)
1325 {
1326 char *this_opt;
1327
1328 if (!options || !*options)
1329 return 0;
1330
1331 while ((this_opt = strsep(&options, ",")) != NULL) {
1332 if (!*this_opt)
1333 continue;
1334 if (!strcmp(this_opt, "inverse")) {
1335 z3fb_inverse = 1;
1336 fb_invert_cmaps();
1337 } else if (!strncmp(this_opt, "font:", 5)) {
1338 strlcpy(fontname, this_opt+5, sizeof(fontname));
1339 } else
1340 z3fb_mode = get_video_mode(this_opt);
1341 }
1342 return 0;
1343 }
1344
1345
1346 /*
1347 * Initialization
1348 */
1349
1350 int __init retz3fb_init(void)
1351 {
1352 unsigned long board_addr, board_size;
1353 struct zorro_dev *z = NULL;
1354 volatile unsigned char *regs;
1355 struct retz3fb_par par;
1356 struct retz3_fb_info *zinfo;
1357 struct fb_info *fb_info;
1358 short i;
1359 int res = -ENXIO;
1360
1361 while ((z = zorro_find_device(ZORRO_PROD_MACROSYSTEMS_RETINA_Z3, z))) {
1362 board_addr = z->resource.start;
1363 board_size = z->resource.end-z->resource.start+1;
1364 if (!request_mem_region(board_addr, 0x0c00000,
1365 "ncr77c32blt")) {
1366 continue;
1367 if (!request_mem_region(board_addr+VIDEO_MEM_OFFSET,
1368 0x00400000, "RAM"))
1369 release_mem_region(board_addr, 0x00c00000);
1370 continue;
1371 }
1372 if (!(zinfo = kmalloc(sizeof(struct retz3_fb_info),
1373 GFP_KERNEL)))
1374 return -ENOMEM;
1375 memset(zinfo, 0, sizeof(struct retz3_fb_info));
1376
1377 zinfo->base = ioremap(board_addr, board_size);
1378 zinfo->regs = zinfo->base;
1379 zinfo->fbmem = zinfo->base + VIDEO_MEM_OFFSET;
1380 /* Get memory size - for now we asume it's a 4MB board */
1381 zinfo->fbsize = 0x00400000; /* 4 MB */
1382 zinfo->physregs = board_addr;
1383 zinfo->physfbmem = board_addr + VIDEO_MEM_OFFSET;
1384
1385 fb_info = fbinfo(zinfo);
1386
1387 for (i = 0; i < 256; i++){
1388 for (i = 0; i < 256; i++){
1389 zinfo->color_table[i][0] = i;
1390 zinfo->color_table[i][1] = i;
1391 zinfo->color_table[i][2] = i;
1392 }
1393 }
1394
1395 regs = zinfo->regs;
1396 /* Disable hardware cursor */
1397 seq_w(regs, SEQ_CURSOR_Y_INDEX, 0x00);
1398
1399 retz3fb_setcolreg (255, 56<<8, 100<<8, 160<<8, 0, fb_info);
1400 retz3fb_setcolreg (254, 0, 0, 0, 0, fb_info);
1401
1402 strcpy(fb_info->modename, retz3fb_name);
1403 fb_info->changevar = NULL;
1404 fb_info->fbops = &retz3fb_ops;
1405 fb_info->screen_base = zinfo->fbmem;
1406 fb_info->disp = &zinfo->disp;
1407 fb_info->currcon = -1;
1408 fb_info->switch_con = &z3fb_switch;
1409 fb_info->updatevar = &z3fb_updatevar;
1410 fb_info->flags = FBINFO_FLAG_DEFAULT;
1411 strlcpy(fb_info->fontname, fontname, sizeof(fb_info->fontname));
1412
1413 if (z3fb_mode == -1)
1414 retz3fb_default = retz3fb_predefined[0].var;
1415
1416 retz3_decode_var(&retz3fb_default, &par);
1417 retz3_encode_var(&retz3fb_default, &par);
1418
1419 do_fb_set_var(fb_info, &retz3fb_default, 0);
1420 retz3fb_get_var(&zinfo->disp.var, -1, fb_info);
1421
1422 retz3fb_set_disp(-1, fb_info);
1423
1424 do_install_cmap(0, fb_info);
1425
1426 if (register_framebuffer(fb_info) < 0) {
1427 iounmap(zinfo->base);
1428 return -EINVAL;
1429 }
1430
1431 printk(KERN_INFO "fb%d: %s frame buffer device, using %ldK of "
1432 "video memory\n", fb_info->node,
1433 fb_info->modename, zinfo->fbsize>>10);
1434
1435 /* FIXME: This driver cannot be unloaded yet */
1436 res = 0;
1437 }
1438 return res;
1439 }
1440
1441
1442 static int z3fb_switch(int con, struct fb_info *info)
1443 {
1444 /* Do we have to save the colormap? */
1445 if (fb_display[info->currcon].cmap.len)
1446 fb_get_cmap(&fb_display[info->currcon].cmap, 1,
1447 retz3_getcolreg, info);
1448
1449 do_fb_set_var(info, &fb_display[con].var, 1);
1450 info->currcon = con;
1451 /* Install new colormap */
1452 do_install_cmap(con, info);
1453 return 0;
1454 }
1455
1456
1457 /*
1458 * Update the `var' structure (called by fbcon.c)
1459 *
1460 * This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
1461 * Since it's called by a kernel driver, no range checking is done.
1462 */
1463
1464 static int z3fb_updatevar(int con, struct fb_info *info)
1465 {
1466 return 0;
1467 }
1468
1469 /*
1470 * Get a Video Mode
1471 */
1472
1473 static int __init get_video_mode(const char *name)
1474 {
1475 short i;
1476
1477 for (i = 0; i < NUM_TOTAL_MODES; i++)
1478 if (!strcmp(name, retz3fb_predefined[i].name)){
1479 retz3fb_default = retz3fb_predefined[i].var;
1480 return i;
1481 }
1482 return -1;
1483 }
1484
1485
1486 #ifdef MODULE
1487 MODULE_LICENSE("GPL");
1488
1489 int init_module(void)
1490 {
1491 return retz3fb_init();
1492 }
1493 #endif
1494
1495
1496 /*
1497 * Text console acceleration
1498 */
1499
1500 #ifdef FBCON_HAS_CFB8
1501 static void retz3_8_bmove(struct display *p, int sy, int sx,
1502 int dy, int dx, int height, int width)
1503 {
1504 int fontwidth = fontwidth(p);
1505
1506 sx *= fontwidth;
1507 dx *= fontwidth;
1508 width *= fontwidth;
1509
1510 retz3_bitblt(p,
1511 (unsigned short)sx,
1512 (unsigned short)(sy*fontheight(p)),
1513 (unsigned short)dx,
1514 (unsigned short)(dy*fontheight(p)),
1515 (unsigned short)width,
1516 (unsigned short)(height*fontheight(p)),
1517 Z3BLTcopy,
1518 0xffff);
1519 }
1520
1521 static void retz3_8_clear(struct vc_data *conp, struct display *p,
1522 int sy, int sx, int height, int width)
1523 {
1524 unsigned short col;
1525 int fontwidth = fontwidth(p);
1526
1527 sx *= fontwidth;
1528 width *= fontwidth;
1529
1530 col = attr_bgcol_ec(p, conp);
1531 col &= 0xff;
1532 col |= (col << 8);
1533
1534 retz3_bitblt(p,
1535 (unsigned short)sx,
1536 (unsigned short)(sy*fontheight(p)),
1537 (unsigned short)sx,
1538 (unsigned short)(sy*fontheight(p)),
1539 (unsigned short)width,
1540 (unsigned short)(height*fontheight(p)),
1541 Z3BLTset,
1542 col);
1543 }
1544
1545
1546 static void retz3_putc(struct vc_data *conp, struct display *p, int c,
1547 int yy, int xx)
1548 {
1549 retz3_busy(p);
1550 fbcon_cfb8_putc(conp, p, c, yy, xx);
1551 }
1552
1553
1554 static void retz3_putcs(struct vc_data *conp, struct display *p,
1555 const unsigned short *s, int count,
1556 int yy, int xx)
1557 {
1558 retz3_busy(p);
1559 fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
1560 }
1561
1562
1563 static void retz3_revc(struct display *p, int xx, int yy)
1564 {
1565 retz3_busy(p);
1566 fbcon_cfb8_revc(p, xx, yy);
1567 }
1568
1569
1570 static void retz3_clear_margins(struct vc_data* conp, struct display* p,
1571 int bottom_only)
1572 {
1573 retz3_busy(p);
1574 fbcon_cfb8_clear_margins(conp, p, bottom_only);
1575 }
1576
1577
1578 static struct display_switch fbcon_retz3_8 = {
1579 .setup = fbcon_cfb8_setup,
1580 .bmove = retz3_8_bmove,
1581 .clear = retz3_8_clear,
1582 .putc = retz3_putc,
1583 .putcs = retz3_putcs,
1584 .revc = retz3_revc,
1585 .clear_margins = retz3_clear_margins,
1586 .fontwidthmask = FONTWIDTH(8)
1587 };
1588 #endif
CJK support for tty framebuffer vt