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2.2.0-final
[davej-history.git] / drivers / video / retz3fb.c
blob995e86506d4c7dbdacaf1c891adb0d6c90012f25
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/tty.h>
29 #include <linux/malloc.h>
30 #include <linux/delay.h>
31 #include <linux/fb.h>
32 #include <linux/zorro.h>
33 #include <linux/init.h>
34
35 #include <asm/uaccess.h>
36 #include <asm/system.h>
37 #include <asm/irq.h>
38 #include <asm/pgtable.h>
39 #include <asm/io.h>
40
41 #include <video/fbcon.h>
42 #include <video/fbcon-cfb8.h>
43 #include <video/fbcon-cfb16.h>
44
45 #include "retz3fb.h"
46
47 /* #define DEBUG if(1) */
48 #define DEBUG if(0)
49
50 /*
51 * Reserve space for one pattern line.
52 *
53 * For the time being we only support 4MB boards!
54 */
55
56 #define PAT_MEM_SIZE 16*3
57 #define PAT_MEM_OFF (4*1024*1024 - PAT_MEM_SIZE)
58
59 #define arraysize(x) (sizeof(x)/sizeof(*(x)))
60
61 struct retz3fb_par {
62 int xres;
63 int yres;
64 int xres_vir;
65 int yres_vir;
66 int xoffset;
67 int yoffset;
68 int bpp;
69
70 struct fb_bitfield red;
71 struct fb_bitfield green;
72 struct fb_bitfield blue;
73 struct fb_bitfield transp;
74
75 int pixclock;
76 int left_margin; /* time from sync to picture */
77 int right_margin; /* time from picture to sync */
78 int upper_margin; /* time from sync to picture */
79 int lower_margin;
80 int hsync_len; /* length of horizontal sync */
81 int vsync_len; /* length of vertical sync */
82 int vmode;
83
84 int accel;
85 };
86
87 struct display_data {
88 long h_total; /* Horizontal Total */
89 long h_sstart; /* Horizontal Sync Start */
90 long h_sstop; /* Horizontal Sync Stop */
91 long h_bstart; /* Horizontal Blank Start */
92 long h_bstop; /* Horizontal Blank Stop */
93 long h_dispend; /* Horizontal Display End */
94 long v_total; /* Vertical Total */
95 long v_sstart; /* Vertical Sync Start */
96 long v_sstop; /* Vertical Sync Stop */
97 long v_bstart; /* Vertical Blank Start */
98 long v_bstop; /* Vertical Blank Stop */
99 long v_dispend; /* Horizontal Display End */
100 };
101
102 struct retz3_fb_info {
103 struct fb_info info;
104 unsigned long base;
105 unsigned long fbmem;
106 unsigned long fbsize;
107 volatile unsigned char *regs;
108 unsigned long physfbmem;
109 unsigned long physregs;
110 int currcon;
111 int current_par_valid; /* set to 0 by memset */
112 struct display disp;
113 struct retz3fb_par current_par;
114 unsigned char color_table [256][3];
115 };
116
117
118 static char fontname[40] __initdata = { 0 };
119
120 #define retz3info(info) ((struct retz3_fb_info *)(info))
121 #define fbinfo(info) ((struct fb_info *)(info))
122
123
124 /*
125 * Frame Buffer Name
126 */
127
128 static char retz3fb_name[16] = "RetinaZ3";
129
130
131 /*
132 * A small info on how to convert XFree86 timing values into fb
133 * timings - by Frank Neumann:
134 *
135 An XFree86 mode line consists of the following fields:
136 "800x600" 50 800 856 976 1040 600 637 643 666
137 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
138
139 The fields in the fb_var_screeninfo structure are:
140 unsigned long pixclock; * pixel clock in ps (pico seconds) *
141 unsigned long left_margin; * time from sync to picture *
142 unsigned long right_margin; * time from picture to sync *
143 unsigned long upper_margin; * time from sync to picture *
144 unsigned long lower_margin;
145 unsigned long hsync_len; * length of horizontal sync *
146 unsigned long vsync_len; * length of vertical sync *
147
148 1) Pixelclock:
149 xfree: in MHz
150 fb: In Picoseconds (ps)
151
152 pixclock = 1000000 / DCF
153
154 2) horizontal timings:
155 left_margin = HFL - SH2
156 right_margin = SH1 - HR
157 hsync_len = SH2 - SH1
158
159 3) vertical timings:
160 upper_margin = VFL - SV2
161 lower_margin = SV1 - VR
162 vsync_len = SV2 - SV1
163
164 Good examples for VESA timings can be found in the XFree86 source tree,
165 under "programs/Xserver/hw/xfree86/doc/modeDB.txt".
166 */
167
168 /*
169 * Predefined Video Modes
170 */
171
172 static struct fb_videomode 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 #if 1
182 0, 0, -1, -1, FB_ACCEL_NONE, 39722, 48, 16, 33, 10, 96, 2,
183 #else
184 0, 0, -1, -1, FB_ACCELF_TEXT, 38461, 28, 32, 12, 10, 96, 2,
185 #endif
186 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
187 }
188 },
189 /*
190 ModeLine "800x600" 36 800 824 896 1024 600 601 603 625
191 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
192 */
193 {
194 "800x600", { /* 800x600, 8 bpp */
195 800, 600, 800, 600, 0, 0, 8, 0,
196 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
197 0, 0, -1, -1, FB_ACCELF_TEXT, 27778, 64, 24, 22, 1, 120, 2,
198 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
199 }
200 },
201 {
202 "800x600-60", { /* 800x600, 8 bpp */
203 800, 600, 800, 600, 0, 0, 8, 0,
204 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
205 0, 0, -1, -1, FB_ACCELF_TEXT, 25000, 88, 40, 23, 1, 128, 4,
206 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
207 }
208 },
209 {
210 "800x600-70", { /* 800x600, 8 bpp */
211 800, 600, 800, 600, 0, 0, 8, 0,
212 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
213 0, 0, -1, -1, FB_ACCELF_TEXT, 22272, 40, 24, 15, 9, 144, 12,
214 FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED
215 }
216 },
217 /*
218 ModeLine "1024x768i" 45 1024 1064 1224 1264 768 777 785 817 interlace
219 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
220 */
221 {
222 "1024x768i", { /* 1024x768, 8 bpp, interlaced */
223 1024, 768, 1024, 768, 0, 0, 8, 0,
224 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
225 0, 0, -1, -1, FB_ACCELF_TEXT, 22222, 40, 40, 32, 9, 160, 8,
226 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED
227 }
228 },
229 {
230 "1024x768", {
231 1024, 768, 1024, 768, 0, 0, 8, 0,
232 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
233 0, 0, -1, -1, FB_ACCEL_NONE, 12500, 92, 112, 31, 2, 204, 4,
234 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
235 }
236 },
237 {
238 "640x480-16", { /* 640x480, 16 bpp */
239 640, 480, 640, 480, 0, 0, 16, 0,
240 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
241 0, 0, -1, -1, 0, 38461/2, 28, 32, 12, 10, 96, 2,
242 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
243 }
244 },
245 {
246 "640x480-24", { /* 640x480, 24 bpp */
247 640, 480, 640, 480, 0, 0, 24, 0,
248 {8, 8, 8}, {8, 8, 8}, {8, 8, 8}, {0, 0, 0},
249 0, 0, -1, -1, 0, 38461/3, 28, 32, 12, 10, 96, 2,
250 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
251 }
252 },
253 };
254
255
256 #define NUM_TOTAL_MODES arraysize(retz3fb_predefined)
257
258 static struct fb_var_screeninfo retz3fb_default;
259
260 static int z3fb_inverse = 0;
261 static int z3fb_mode __initdata = 0;
262
263
264 /*
265 * Interface used by the world
266 */
267
268 void retz3fb_setup(char *options, int *ints);
269
270 static int retz3fb_open(struct fb_info *info, int user);
271 static int retz3fb_release(struct fb_info *info, int user);
272 static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
273 struct fb_info *info);
274 static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
275 struct fb_info *info);
276 static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
277 struct fb_info *info);
278 static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
279 struct fb_info *info);
280 static int retz3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
281 struct fb_info *info);
282 static int retz3fb_pan_display(struct fb_var_screeninfo *var, int con,
283 struct fb_info *info);
284 static int retz3fb_ioctl(struct inode *inode, struct file *file,
285 unsigned int cmd, unsigned long arg, int con,
286 struct fb_info *info);
287
288
289 /*
290 * Interface to the low level console driver
291 */
292
293 void retz3fb_init(void);
294 static int z3fb_switch(int con, struct fb_info *info);
295 static int z3fb_updatevar(int con, struct fb_info *info);
296 static void z3fb_blank(int blank, struct fb_info *info);
297
298
299 /*
300 * Text console acceleration
301 */
302
303 #ifdef FBCON_HAS_CFB8
304 static struct display_switch fbcon_retz3_8;
305 #endif
306
307
308 /*
309 * Accelerated Functions used by the low level console driver
310 */
311
312 static void retz3_bitblt(struct display *p,
313 unsigned short curx, unsigned short cury, unsigned
314 short destx, unsigned short desty, unsigned short
315 width, unsigned short height, unsigned short cmd,
316 unsigned short mask);
317
318 /*
319 * Hardware Specific Routines
320 */
321
322 static int retz3_encode_fix(struct fb_info *info,
323 struct fb_fix_screeninfo *fix,
324 struct retz3fb_par *par);
325 static int retz3_decode_var(struct fb_var_screeninfo *var,
326 struct retz3fb_par *par);
327 static int retz3_encode_var(struct fb_var_screeninfo *var,
328 struct retz3fb_par *par);
329 static int retz3_getcolreg(unsigned int regno, unsigned int *red,
330 unsigned int *green, unsigned int *blue,
331 unsigned int *transp, struct fb_info *info);
332 static int retz3_setcolreg(unsigned int regno, unsigned int red,
333 unsigned int green, unsigned int blue,
334 unsigned int transp, struct fb_info *info);
335
336 /*
337 * Internal routines
338 */
339
340 static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par);
341 static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par);
342 static int do_fb_set_var(struct fb_info *info,
343 struct fb_var_screeninfo *var, int isactive);
344 static void do_install_cmap(int con, struct fb_info *info);
345 static void retz3fb_set_disp(int con, struct fb_info *info);
346 static int get_video_mode(const char *name);
347
348
349 /* -------------------- Hardware specific routines -------------------------- */
350
351 static unsigned short find_fq(unsigned int freq)
352 {
353 unsigned long f;
354 long tmp;
355 long prev = 0x7fffffff;
356 long n2, n1 = 3;
357 unsigned long m;
358 unsigned short res = 0;
359
360 if (freq <= 31250000)
361 n2 = 3;
362 else if (freq <= 62500000)
363 n2 = 2;
364 else if (freq <= 125000000)
365 n2 = 1;
366 else if (freq <= 250000000)
367 n2 = 0;
368 else
369 return 0;
370
371
372 do {
373 f = freq >> (10 - n2);
374
375 m = (f * n1) / (14318180/1024);
376
377 if (m > 129)
378 break;
379
380 tmp = (((m * 14318180) >> n2) / n1) - freq;
381 if (tmp < 0)
382 tmp = -tmp;
383
384 if (tmp < prev) {
385 prev = tmp;
386 res = (((n2 << 5) | (n1-2)) << 8) | (m-2);
387 }
388
389 } while ( (++n1) <= 21);
390
391 return res;
392 }
393
394
395 static int retz3_set_video(struct fb_info *info,
396 struct fb_var_screeninfo *var,
397 struct retz3fb_par *par)
398 {
399 volatile unsigned char *regs = retz3info(info)->regs;
400 unsigned int freq;
401
402 int xres, hfront, hsync, hback;
403 int yres, vfront, vsync, vback;
404 unsigned char tmp;
405 unsigned short best_freq;
406 struct display_data data;
407
408 short clocksel = 0; /* Apparantly this is always zero */
409
410 int bpp = var->bits_per_pixel;
411
412 /*
413 * XXX
414 */
415 if (bpp == 24)
416 return 0;
417
418 if ((bpp != 8) && (bpp != 16) && (bpp != 24))
419 return -EFAULT;
420
421 par->xoffset = 0;
422 par->yoffset = 0;
423
424 xres = var->xres * bpp / 4;
425 hfront = var->right_margin * bpp / 4;
426 hsync = var->hsync_len * bpp / 4;
427 hback = var->left_margin * bpp / 4;
428
429 if (var->vmode & FB_VMODE_DOUBLE)
430 {
431 yres = var->yres * 2;
432 vfront = var->lower_margin * 2;
433 vsync = var->vsync_len * 2;
434 vback = var->upper_margin * 2;
435 }
436 else if (var->vmode & FB_VMODE_INTERLACED)
437 {
438 yres = (var->yres + 1) / 2;
439 vfront = (var->lower_margin + 1) / 2;
440 vsync = (var->vsync_len + 1) / 2;
441 vback = (var->upper_margin + 1) / 2;
442 }
443 else
444 {
445 yres = var->yres; /* -1 ? */
446 vfront = var->lower_margin;
447 vsync = var->vsync_len;
448 vback = var->upper_margin;
449 }
450
451 data.h_total = (hback / 8) + (xres / 8)
452 + (hfront / 8) + (hsync / 8) - 1 /* + 1 */;
453 data.h_dispend = ((xres + bpp - 1)/ 8) - 1;
454 data.h_bstart = xres / 8 - 1 /* + 1 */;
455
456 data.h_bstop = data.h_total+1 + 2 + 1;
457 data.h_sstart = (xres / 8) + (hfront / 8) + 1;
458 data.h_sstop = (xres / 8) + (hfront / 8) + (hsync / 8) + 1;
459
460 data.v_total = yres + vfront + vsync + vback - 1;
461
462 data.v_dispend = yres - 1;
463 data.v_bstart = yres - 1;
464
465 data.v_bstop = data.v_total;
466 data.v_sstart = yres + vfront - 1 - 2;
467 data.v_sstop = yres + vfront + vsync - 1;
468
469 #if 0 /* testing */
470
471 printk("HBS: %i\n", data.h_bstart);
472 printk("HSS: %i\n", data.h_sstart);
473 printk("HSE: %i\n", data.h_sstop);
474 printk("HBE: %i\n", data.h_bstop);
475 printk("HT: %i\n", data.h_total);
476
477 printk("hsync: %i\n", hsync);
478 printk("hfront: %i\n", hfront);
479 printk("hback: %i\n", hback);
480
481 printk("VBS: %i\n", data.v_bstart);
482 printk("VSS: %i\n", data.v_sstart);
483 printk("VSE: %i\n", data.v_sstop);
484 printk("VBE: %i\n", data.v_bstop);
485 printk("VT: %i\n", data.v_total);
486
487 printk("vsync: %i\n", vsync);
488 printk("vfront: %i\n", vfront);
489 printk("vback: %i\n", vback);
490 #endif
491
492 if (data.v_total >= 1024)
493 printk("MAYDAY: v_total >= 1024; bailing out!\n");
494
495 reg_w(regs, GREG_MISC_OUTPUT_W, 0xe3 | ((clocksel & 3) * 0x04));
496 reg_w(regs, GREG_FEATURE_CONTROL_W, 0x00);
497
498 seq_w(regs, SEQ_RESET, 0x00);
499 seq_w(regs, SEQ_RESET, 0x03); /* reset sequencer logic */
500
501 /*
502 * CLOCKING_MODE bits:
503 * 2: This one is only set for certain text-modes, wonder if
504 * it may be for EGA-lines? (it was referred to as CLKDIV2)
505 * (The CL drivers sets it to 0x21 with the comment:
506 * FullBandwidth (video off) and 8/9 dot clock)
507 */
508 seq_w(regs, SEQ_CLOCKING_MODE, 0x01 | 0x00 /* 0x08 */);
509
510 seq_w(regs, SEQ_MAP_MASK, 0x0f); /* enable writing to plane 0-3 */
511 seq_w(regs, SEQ_CHAR_MAP_SELECT, 0x00); /* doesn't matter in gfx-mode */
512 seq_w(regs, SEQ_MEMORY_MODE, 0x06); /* CL driver says 0x0e for 256 col mode*/
513 seq_w(regs, SEQ_RESET, 0x01);
514 seq_w(regs, SEQ_RESET, 0x03);
515
516 seq_w(regs, SEQ_EXTENDED_ENABLE, 0x05);
517
518 seq_w(regs, SEQ_CURSOR_CONTROL, 0x00); /* disable cursor */
519 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
520 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
521 seq_w(regs, SEQ_LINEAR_0, 0x4a);
522 seq_w(regs, SEQ_LINEAR_1, 0x00);
523
524 seq_w(regs, SEQ_SEC_HOST_OFF_HI, 0x00);
525 seq_w(regs, SEQ_SEC_HOST_OFF_LO, 0x00);
526 seq_w(regs, SEQ_EXTENDED_MEM_ENA, 0x3 | 0x4 | 0x10 | 0x40);
527
528 /*
529 * The lower 4 bits (0-3) are used to set the font-width for
530 * text-mode - DON'T try to set this for gfx-mode.
531 */
532 seq_w(regs, SEQ_EXT_CLOCK_MODE, 0x10);
533 seq_w(regs, SEQ_EXT_VIDEO_ADDR, 0x03);
534
535 /*
536 * Extended Pixel Control:
537 * bit 0: text-mode=0, gfx-mode=1 (Graphics Byte ?)
538 * bit 1: (Packed/Nibble Pixel Format ?)
539 * bit 4-5: depth, 0=1-8bpp, 1=9-16bpp, 2=17-24bpp
540 */
541 seq_w(regs, SEQ_EXT_PIXEL_CNTL, 0x01 | (((bpp / 8) - 1) << 4));
542
543 seq_w(regs, SEQ_BUS_WIDTH_FEEDB, 0x04);
544 seq_w(regs, SEQ_COLOR_EXP_WFG, 0x01);
545 seq_w(regs, SEQ_COLOR_EXP_WBG, 0x00);
546 seq_w(regs, SEQ_EXT_RW_CONTROL, 0x00);
547 seq_w(regs, SEQ_MISC_FEATURE_SEL, (0x51 | (clocksel & 8)));
548 seq_w(regs, SEQ_COLOR_KEY_CNTL, 0x40);
549 seq_w(regs, SEQ_COLOR_KEY_MATCH0, 0x00);
550 seq_w(regs, SEQ_COLOR_KEY_MATCH1, 0x00);
551 seq_w(regs, SEQ_COLOR_KEY_MATCH2, 0x00);
552 seq_w(regs, SEQ_CRC_CONTROL, 0x00);
553 seq_w(regs, SEQ_PERF_SELECT, 0x10);
554 seq_w(regs, SEQ_ACM_APERTURE_1, 0x00);
555 seq_w(regs, SEQ_ACM_APERTURE_2, 0x30);
556 seq_w(regs, SEQ_ACM_APERTURE_3, 0x00);
557 seq_w(regs, SEQ_MEMORY_MAP_CNTL, 0x03);
558
559
560 /* unlock register CRT0..CRT7 */
561 crt_w(regs, CRT_END_VER_RETR, (data.v_sstop & 0x0f) | 0x20);
562
563 /* Zuerst zu schreibende Werte nur per printk ausgeben */
564 DEBUG printk("CRT_HOR_TOTAL: %ld\n", data.h_total);
565 crt_w(regs, CRT_HOR_TOTAL, data.h_total & 0xff);
566
567 DEBUG printk("CRT_HOR_DISP_ENA_END: %ld\n", data.h_dispend);
568 crt_w(regs, CRT_HOR_DISP_ENA_END, (data.h_dispend) & 0xff);
569
570 DEBUG printk("CRT_START_HOR_BLANK: %ld\n", data.h_bstart);
571 crt_w(regs, CRT_START_HOR_BLANK, data.h_bstart & 0xff);
572
573 DEBUG printk("CRT_END_HOR_BLANK: 128+%ld\n", data.h_bstop % 32);
574 crt_w(regs, CRT_END_HOR_BLANK, 0x80 | (data.h_bstop & 0x1f));
575
576 DEBUG printk("CRT_START_HOR_RETR: %ld\n", data.h_sstart);
577 crt_w(regs, CRT_START_HOR_RETR, data.h_sstart & 0xff);
578
579 tmp = (data.h_sstop & 0x1f);
580 if (data.h_bstop & 0x20)
581 tmp |= 0x80;
582 DEBUG printk("CRT_END_HOR_RETR: %d\n", tmp);
583 crt_w(regs, CRT_END_HOR_RETR, tmp);
584
585 DEBUG printk("CRT_VER_TOTAL: %ld\n", data.v_total & 0xff);
586 crt_w(regs, CRT_VER_TOTAL, (data.v_total & 0xff));
587
588 tmp = 0x10; /* LineCompare bit #9 */
589 if (data.v_total & 256)
590 tmp |= 0x01;
591 if (data.v_dispend & 256)
592 tmp |= 0x02;
593 if (data.v_sstart & 256)
594 tmp |= 0x04;
595 if (data.v_bstart & 256)
596 tmp |= 0x08;
597 if (data.v_total & 512)
598 tmp |= 0x20;
599 if (data.v_dispend & 512)
600 tmp |= 0x40;
601 if (data.v_sstart & 512)
602 tmp |= 0x80;
603 DEBUG printk("CRT_OVERFLOW: %d\n", tmp);
604 crt_w(regs, CRT_OVERFLOW, tmp);
605
606 crt_w(regs, CRT_PRESET_ROW_SCAN, 0x00); /* not CL !!! */
607
608 tmp = 0x40; /* LineCompare bit #8 */
609 if (data.v_bstart & 512)
610 tmp |= 0x20;
611 if (var->vmode & FB_VMODE_DOUBLE)
612 tmp |= 0x80;
613 DEBUG printk("CRT_MAX_SCAN_LINE: %d\n", tmp);
614 crt_w(regs, CRT_MAX_SCAN_LINE, tmp);
615
616 crt_w(regs, CRT_CURSOR_START, 0x00);
617 crt_w(regs, CRT_CURSOR_END, 8 & 0x1f); /* font height */
618
619 crt_w(regs, CRT_START_ADDR_HIGH, 0x00);
620 crt_w(regs, CRT_START_ADDR_LOW, 0x00);
621
622 crt_w(regs, CRT_CURSOR_LOC_HIGH, 0x00);
623 crt_w(regs, CRT_CURSOR_LOC_LOW, 0x00);
624
625 DEBUG printk("CRT_START_VER_RETR: %ld\n", data.v_sstart & 0xff);
626 crt_w(regs, CRT_START_VER_RETR, (data.v_sstart & 0xff));
627
628 #if 1
629 /* 5 refresh cycles per scanline */
630 DEBUG printk("CRT_END_VER_RETR: 64+32+%ld\n", data.v_sstop % 16);
631 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 0x40 | 0x20));
632 #else
633 DEBUG printk("CRT_END_VER_RETR: 128+32+%ld\n", data.v_sstop % 16);
634 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 128 | 32));
635 #endif
636 DEBUG printk("CRT_VER_DISP_ENA_END: %ld\n", data.v_dispend & 0xff);
637 crt_w(regs, CRT_VER_DISP_ENA_END, (data.v_dispend & 0xff));
638
639 DEBUG printk("CRT_START_VER_BLANK: %ld\n", data.v_bstart & 0xff);
640 crt_w(regs, CRT_START_VER_BLANK, (data.v_bstart & 0xff));
641
642 DEBUG printk("CRT_END_VER_BLANK: %ld\n", data.v_bstop & 0xff);
643 crt_w(regs, CRT_END_VER_BLANK, (data.v_bstop & 0xff));
644
645 DEBUG printk("CRT_MODE_CONTROL: 0xe3\n");
646 crt_w(regs, CRT_MODE_CONTROL, 0xe3);
647
648 DEBUG printk("CRT_LINE_COMPARE: 0xff\n");
649 crt_w(regs, CRT_LINE_COMPARE, 0xff);
650
651 tmp = (var->xres_virtual / 8) * (bpp / 8);
652 crt_w(regs, CRT_OFFSET, tmp);
653
654 crt_w(regs, CRT_UNDERLINE_LOC, 0x07); /* probably font-height - 1 */
655
656 tmp = 0x20; /* Enable extended end bits */
657 if (data.h_total & 0x100)
658 tmp |= 0x01;
659 if ((data.h_dispend) & 0x100)
660 tmp |= 0x02;
661 if (data.h_bstart & 0x100)
662 tmp |= 0x04;
663 if (data.h_sstart & 0x100)
664 tmp |= 0x08;
665 if (var->vmode & FB_VMODE_INTERLACED)
666 tmp |= 0x10;
667 DEBUG printk("CRT_EXT_HOR_TIMING1: %d\n", tmp);
668 crt_w(regs, CRT_EXT_HOR_TIMING1, tmp);
669
670 tmp = 0x00;
671 if (((var->xres_virtual / 8) * (bpp / 8)) & 0x100)
672 tmp |= 0x10;
673 crt_w(regs, CRT_EXT_START_ADDR, tmp);
674
675 tmp = 0x00;
676 if (data.h_total & 0x200)
677 tmp |= 0x01;
678 if ((data.h_dispend) & 0x200)
679 tmp |= 0x02;
680 if (data.h_bstart & 0x200)
681 tmp |= 0x04;
682 if (data.h_sstart & 0x200)
683 tmp |= 0x08;
684 tmp |= ((data.h_bstop & 0xc0) >> 2);
685 tmp |= ((data.h_sstop & 0x60) << 1);
686 crt_w(regs, CRT_EXT_HOR_TIMING2, tmp);
687 DEBUG printk("CRT_EXT_HOR_TIMING2: %d\n", tmp);
688
689 tmp = 0x10; /* Line compare bit 10 */
690 if (data.v_total & 0x400)
691 tmp |= 0x01;
692 if ((data.v_dispend) & 0x400)
693 tmp |= 0x02;
694 if (data.v_bstart & 0x400)
695 tmp |= 0x04;
696 if (data.v_sstart & 0x400)
697 tmp |= 0x08;
698 tmp |= ((data.v_bstop & 0x300) >> 3);
699 if (data.v_sstop & 0x10)
700 tmp |= 0x80;
701 crt_w(regs, CRT_EXT_VER_TIMING, tmp);
702 DEBUG printk("CRT_EXT_VER_TIMING: %d\n", tmp);
703
704 crt_w(regs, CRT_MONITOR_POWER, 0x00);
705
706 /*
707 * Convert from ps to Hz.
708 */
709 freq = 2000000000 / var->pixclock;
710 freq = freq * 500;
711
712 best_freq = find_fq(freq);
713 pll_w(regs, 0x02, best_freq);
714 best_freq = find_fq(61000000);
715 pll_w(regs, 0x0a, best_freq);
716 pll_w(regs, 0x0e, 0x22);
717
718 gfx_w(regs, GFX_SET_RESET, 0x00);
719 gfx_w(regs, GFX_ENABLE_SET_RESET, 0x00);
720 gfx_w(regs, GFX_COLOR_COMPARE, 0x00);
721 gfx_w(regs, GFX_DATA_ROTATE, 0x00);
722 gfx_w(regs, GFX_READ_MAP_SELECT, 0x00);
723 gfx_w(regs, GFX_GRAPHICS_MODE, 0x00);
724 gfx_w(regs, GFX_MISC, 0x05);
725 gfx_w(regs, GFX_COLOR_XCARE, 0x0f);
726 gfx_w(regs, GFX_BITMASK, 0xff);
727
728 reg_r(regs, ACT_ADDRESS_RESET);
729 attr_w(regs, ACT_PALETTE0 , 0x00);
730 attr_w(regs, ACT_PALETTE1 , 0x01);
731 attr_w(regs, ACT_PALETTE2 , 0x02);
732 attr_w(regs, ACT_PALETTE3 , 0x03);
733 attr_w(regs, ACT_PALETTE4 , 0x04);
734 attr_w(regs, ACT_PALETTE5 , 0x05);
735 attr_w(regs, ACT_PALETTE6 , 0x06);
736 attr_w(regs, ACT_PALETTE7 , 0x07);
737 attr_w(regs, ACT_PALETTE8 , 0x08);
738 attr_w(regs, ACT_PALETTE9 , 0x09);
739 attr_w(regs, ACT_PALETTE10, 0x0a);
740 attr_w(regs, ACT_PALETTE11, 0x0b);
741 attr_w(regs, ACT_PALETTE12, 0x0c);
742 attr_w(regs, ACT_PALETTE13, 0x0d);
743 attr_w(regs, ACT_PALETTE14, 0x0e);
744 attr_w(regs, ACT_PALETTE15, 0x0f);
745 reg_r(regs, ACT_ADDRESS_RESET);
746
747 attr_w(regs, ACT_ATTR_MODE_CNTL, 0x09); /* 0x01 for CL */
748
749 attr_w(regs, ACT_OVERSCAN_COLOR, 0x00);
750 attr_w(regs, ACT_COLOR_PLANE_ENA, 0x0f);
751 attr_w(regs, ACT_HOR_PEL_PANNING, 0x00);
752 attr_w(regs, ACT_COLOR_SELECT, 0x00);
753
754 reg_r(regs, ACT_ADDRESS_RESET);
755 reg_w(regs, ACT_DATA, 0x20);
756
757 reg_w(regs, VDAC_MASK, 0xff);
758
759 /*
760 * Extended palette addressing ???
761 */
762 switch (bpp){
763 case 8:
764 reg_w(regs, 0x83c6, 0x00);
765 break;
766 case 16:
767 reg_w(regs, 0x83c6, 0x60);
768 break;
769 case 24:
770 reg_w(regs, 0x83c6, 0xe0);
771 break;
772 default:
773 printk("Illegal color-depth: %i\n", bpp);
774 }
775
776 reg_w(regs, VDAC_ADDRESS, 0x00);
777
778 seq_w(regs, SEQ_MAP_MASK, 0x0f );
779
780 return 0;
781 }
782
783
784 /*
785 * This function should fill in the `fix' structure based on the
786 * values in the `par' structure.
787 */
788
789 static int retz3_encode_fix(struct fb_info *info,
790 struct fb_fix_screeninfo *fix,
791 struct retz3fb_par *par)
792 {
793 struct retz3_fb_info *zinfo = retz3info(info);
794
795 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
796 strcpy(fix->id, retz3fb_name);
797 fix->smem_start = (char *)(zinfo->physfbmem);
798 fix->smem_len = zinfo->fbsize;
799 fix->mmio_start = (char *)(zinfo->physregs);
800 fix->mmio_len = 0x00c00000;
801
802 fix->type = FB_TYPE_PACKED_PIXELS;
803 fix->type_aux = 0;
804 if (par->bpp == 8)
805 fix->visual = FB_VISUAL_PSEUDOCOLOR;
806 else
807 fix->visual = FB_VISUAL_TRUECOLOR;
808
809 fix->xpanstep = 0;
810 fix->ypanstep = 0;
811 fix->ywrapstep = 0;
812 fix->line_length = 0;
813
814 fix->accel = FB_ACCEL_NCR_77C32BLT;
815
816 return 0;
817 }
818
819
820 /*
821 * Get the video params out of `var'. If a value doesn't fit, round
822 * it up, if it's too big, return -EINVAL.
823 */
824
825 static int retz3_decode_var(struct fb_var_screeninfo *var,
826 struct retz3fb_par *par)
827 {
828 par->xres = var->xres;
829 par->yres = var->yres;
830 par->xres_vir = var->xres_virtual;
831 par->yres_vir = var->yres_virtual;
832 par->bpp = var->bits_per_pixel;
833 par->pixclock = var->pixclock;
834 par->vmode = var->vmode;
835
836 par->red = var->red;
837 par->green = var->green;
838 par->blue = var->blue;
839 par->transp = var->transp;
840
841 par->left_margin = var->left_margin;
842 par->right_margin = var->right_margin;
843 par->upper_margin = var->upper_margin;
844 par->lower_margin = var->lower_margin;
845 par->hsync_len = var->hsync_len;
846 par->vsync_len = var->vsync_len;
847
848 if (var->accel_flags & FB_ACCELF_TEXT)
849 par->accel = FB_ACCELF_TEXT;
850 else
851 par->accel = 0;
852
853 return 0;
854 }
855
856
857 /*
858 * Fill the `var' structure based on the values in `par' and maybe
859 * other values read out of the hardware.
860 */
861
862 static int retz3_encode_var(struct fb_var_screeninfo *var,
863 struct retz3fb_par *par)
864 {
865 memset(var, 0, sizeof(struct fb_var_screeninfo));
866 var->xres = par->xres;
867 var->yres = par->yres;
868 var->xres_virtual = par->xres_vir;
869 var->yres_virtual = par->yres_vir;
870 var->xoffset = 0;
871 var->yoffset = 0;
872
873 var->bits_per_pixel = par->bpp;
874 var->grayscale = 0;
875
876 var->red = par->red;
877 var->green = par->green;
878 var->blue = par->blue;
879 var->transp = par->transp;
880
881 var->nonstd = 0;
882 var->activate = 0;
883
884 var->height = -1;
885 var->width = -1;
886
887 var->accel_flags = (par->accel && par->bpp == 8) ? FB_ACCELF_TEXT : 0;
888
889 var->pixclock = par->pixclock;
890
891 var->sync = 0; /* ??? */
892 var->left_margin = par->left_margin;
893 var->right_margin = par->right_margin;
894 var->upper_margin = par->upper_margin;
895 var->lower_margin = par->lower_margin;
896 var->hsync_len = par->hsync_len;
897 var->vsync_len = par->vsync_len;
898
899 var->vmode = par->vmode;
900 return 0;
901 }
902
903
904 /*
905 * Set a single color register. Return != 0 for invalid regno.
906 */
907
908 static int retz3_setcolreg(unsigned int regno, unsigned int red,
909 unsigned int green, unsigned int blue,
910 unsigned int transp, struct fb_info *info)
911 {
912 struct retz3_fb_info *zinfo = retz3info(info);
913 volatile unsigned char *regs = zinfo->regs;
914
915 /* We'll get to this */
916
917 if (regno > 255)
918 return 1;
919
920 red >>= 10;
921 green >>= 10;
922 blue >>= 10;
923
924 zinfo->color_table[regno][0] = red;
925 zinfo->color_table[regno][1] = green;
926 zinfo->color_table[regno][2] = blue;
927
928 reg_w(regs, VDAC_ADDRESS_W, regno);
929 reg_w(regs, VDAC_DATA, red);
930 reg_w(regs, VDAC_DATA, green);
931 reg_w(regs, VDAC_DATA, blue);
932
933 return 0;
934 }
935
936
937 /*
938 * Read a single color register and split it into
939 * colors/transparent. Return != 0 for invalid regno.
940 */
941
942 static int retz3_getcolreg(unsigned int regno, unsigned int *red,
943 unsigned int *green, unsigned int *blue,
944 unsigned int *transp, struct fb_info *info)
945 {
946 struct retz3_fb_info *zinfo = retz3info(info);
947 int t;
948
949 if (regno > 255)
950 return 1;
951 t = zinfo->color_table[regno][0];
952 *red = (t<<10) | (t<<4) | (t>>2);
953 t = zinfo->color_table[regno][1];
954 *green = (t<<10) | (t<<4) | (t>>2);
955 t = zinfo->color_table[regno][2];
956 *blue = (t<<10) | (t<<4) | (t>>2);
957 *transp = 0;
958 return 0;
959 }
960
961
962 static void retz3_bitblt (struct display *p,
963 unsigned short srcx, unsigned short srcy,
964 unsigned short destx, unsigned short desty,
965 unsigned short width, unsigned short height,
966 unsigned short cmd, unsigned short mask)
967 {
968 struct fb_var_screeninfo *var = &p->var;
969 struct retz3_fb_info *zinfo = retz3info(p->fb_info);
970 volatile unsigned long *acm = (unsigned long *)(zinfo->base + ACM_OFFSET);
971 unsigned long *pattern = (unsigned long *)(zinfo->fbmem + PAT_MEM_OFF);
972
973 unsigned short mod;
974 unsigned long tmp;
975 unsigned long pat, src, dst;
976 unsigned char blt_status;
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 #if 0
987 /*
988 * Check for blitter finished before we start messing with the
989 * pattern.
990 */
991 do{
992 blt_status = *(((volatile unsigned char *)acm) +
993 (ACM_START_STATUS + 2));
994 }while ((blt_status & 1) == 0);
995 #endif
996
997 i = 0;
998 do{
999 *pattern++ = tmp;
1000 }while(i++ < bpp/4);
1001
1002 tmp = cmd << 8;
1003 *(acm + ACM_RASTEROP_ROTATION/4) = tmp;
1004
1005 mod = 0xc0c2;
1006
1007 pat = 8 * PAT_MEM_OFF;
1008 dst = bpp * (destx + desty * xres_virtual);
1009
1010 /*
1011 * Source is not set for clear.
1012 */
1013 if ((cmd != Z3BLTclear) && (cmd != Z3BLTset)) {
1014 src = bpp * (srcx + srcy * xres_virtual);
1015
1016 if (destx > srcx) {
1017 mod &= ~0x8000;
1018 src += bpp * (width - 1);
1019 dst += bpp * (width - 1);
1020 pat += bpp * 2;
1021 }
1022 if (desty > srcy) {
1023 mod &= ~0x4000;
1024 src += bpp * (height - 1) * xres_virtual;
1025 dst += bpp * (height - 1) * xres_virtual;
1026 pat += bpp * 4;
1027 }
1028
1029 *(acm + ACM_SOURCE/4) = cpu_to_le32(src);
1030 }
1031
1032 *(acm + ACM_PATTERN/4) = cpu_to_le32(pat);
1033
1034 *(acm + ACM_DESTINATION/4) = cpu_to_le32(dst);
1035
1036 tmp = mod << 16;
1037 *(acm + ACM_CONTROL/4) = tmp;
1038
1039 tmp = width | (height << 16);
1040
1041 *(acm + ACM_BITMAP_DIMENSION/4) = cpu_to_le32(tmp);
1042
1043 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x00;
1044 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x01;
1045
1046 /*
1047 * No reason to wait for the blitter to finish, it is better
1048 * just to check if it has finished before we use it again.
1049 */
1050 #if 1
1051 #if 0
1052 while ((*(((volatile unsigned char *)acm) +
1053 (ACM_START_STATUS + 2)) & 1) == 0);
1054 #else
1055 do{
1056 blt_status = *(((volatile unsigned char *)acm) +
1057 (ACM_START_STATUS + 2));
1058 }
1059 while ((blt_status & 1) == 0);
1060 #endif
1061 #endif
1062 }
1063
1064 #if 0
1065 /*
1066 * Move cursor to x, y
1067 */
1068 static void retz3_MoveCursor (unsigned short x, unsigned short y)
1069 {
1070 /* Guess we gotta deal with the cursor at some point */
1071 }
1072 #endif
1073
1074
1075 /*
1076 * Fill the hardware's `par' structure.
1077 */
1078
1079 static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par)
1080 {
1081 struct retz3_fb_info *zinfo = retz3info(info);
1082
1083 if (zinfo->current_par_valid)
1084 *par = zinfo->current_par;
1085 else
1086 retz3_decode_var(&retz3fb_default, par);
1087 }
1088
1089
1090 static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par)
1091 {
1092 struct retz3_fb_info *zinfo = retz3info(info);
1093
1094 zinfo->current_par = *par;
1095 zinfo->current_par_valid = 1;
1096 }
1097
1098
1099 static int do_fb_set_var(struct fb_info *info,
1100 struct fb_var_screeninfo *var, int isactive)
1101 {
1102 int err, activate;
1103 struct retz3fb_par par;
1104 struct retz3_fb_info *zinfo = retz3info(info);
1105
1106 if ((err = retz3_decode_var(var, &par)))
1107 return err;
1108 activate = var->activate;
1109
1110 /* XXX ... what to do about isactive ? */
1111
1112 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
1113 retz3fb_set_par(info, &par);
1114 retz3_encode_var(var, &par);
1115 var->activate = activate;
1116
1117 retz3_set_video(info, var, &zinfo->current_par);
1118
1119 return 0;
1120 }
1121
1122
1123 static void do_install_cmap(int con, struct fb_info *info)
1124 {
1125 struct retz3_fb_info *zinfo = retz3info(info);
1126
1127 if (con != zinfo->currcon)
1128 return;
1129 if (fb_display[con].cmap.len)
1130 fb_set_cmap(&fb_display[con].cmap, 1, retz3_setcolreg, info);
1131 else
1132 fb_set_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
1133 1, retz3_setcolreg, info);
1134 }
1135
1136
1137 /*
1138 * Open/Release the frame buffer device
1139 */
1140
1141 static int retz3fb_open(struct fb_info *info, int user)
1142 {
1143 /*
1144 * Nothing, only a usage count for the moment
1145 */
1146
1147 MOD_INC_USE_COUNT;
1148 return 0;
1149 }
1150
1151 static int retz3fb_release(struct fb_info *info, int user)
1152 {
1153 MOD_DEC_USE_COUNT;
1154 return 0;
1155 }
1156
1157
1158 /*
1159 * Get the Fixed Part of the Display
1160 */
1161
1162 static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
1163 struct fb_info *info)
1164 {
1165 struct retz3fb_par par;
1166 int error = 0;
1167
1168 if (con == -1)
1169 retz3fb_get_par(info, &par);
1170 else
1171 error = retz3_decode_var(&fb_display[con].var, &par);
1172 return(error ? error : retz3_encode_fix(info, fix, &par));
1173 }
1174
1175
1176 /*
1177 * Get the User Defined Part of the Display
1178 */
1179
1180 static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
1181 struct fb_info *info)
1182 {
1183 struct retz3fb_par par;
1184 int error = 0;
1185
1186 if (con == -1) {
1187 retz3fb_get_par(info, &par);
1188 error = retz3_encode_var(var, &par);
1189 } else
1190 *var = fb_display[con].var;
1191 return error;
1192 }
1193
1194
1195 #if 1
1196 static void retz3fb_set_disp(int con, struct fb_info *info)
1197 {
1198 struct fb_fix_screeninfo fix;
1199 struct display *display;
1200 struct retz3_fb_info *zinfo = retz3info(info);
1201
1202 if (con >= 0)
1203 display = &fb_display[con];
1204 else
1205 display = &zinfo->disp; /* used during initialization */
1206
1207 retz3fb_get_fix(&fix, con, info);
1208
1209 if (con == -1)
1210 con = 0;
1211
1212 display->screen_base = (char *)zinfo->fbmem;
1213 display->visual = fix.visual;
1214 display->type = fix.type;
1215 display->type_aux = fix.type_aux;
1216 display->ypanstep = fix.ypanstep;
1217 display->ywrapstep = fix.ywrapstep;
1218 display->can_soft_blank = 1;
1219 display->inverse = z3fb_inverse;
1220
1221 /*
1222 * This seems to be about 20% faster.
1223 */
1224 display->scrollmode = SCROLL_YREDRAW;
1225
1226 switch (display->var.bits_per_pixel) {
1227 #ifdef FBCON_HAS_CFB8
1228 case 8:
1229 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1230 display->dispsw = &fbcon_retz3_8;
1231 retz3_set_video(info, &display->var, &zinfo->current_par);
1232 } else
1233 display->dispsw = &fbcon_cfb8;
1234 break;
1235 #endif
1236 #ifdef FBCON_HAS_CFB16
1237 case 16:
1238 display->dispsw = &fbcon_cfb16;
1239 break;
1240 #endif
1241 default:
1242 display->dispsw = &fbcon_dummy;
1243 break;
1244 }
1245 }
1246 #endif
1247
1248
1249 /*
1250 * Set the User Defined Part of the Display
1251 */
1252
1253 static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
1254 struct fb_info *info)
1255 {
1256 int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
1257 struct display *display;
1258 struct retz3_fb_info *zinfo = retz3info(info);
1259
1260 if (con >= 0)
1261 display = &fb_display[con];
1262 else
1263 display = &zinfo->disp; /* used during initialization */
1264
1265 if ((err = do_fb_set_var(info, var, con == zinfo->currcon)))
1266 return err;
1267 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
1268 oldxres = display->var.xres;
1269 oldyres = display->var.yres;
1270 oldvxres = display->var.xres_virtual;
1271 oldvyres = display->var.yres_virtual;
1272 oldbpp = display->var.bits_per_pixel;
1273 oldaccel = display->var.accel_flags;
1274 display->var = *var;
1275
1276 if (oldxres != var->xres || oldyres != var->yres ||
1277 oldvxres != var->xres_virtual ||
1278 oldvyres != var->yres_virtual ||
1279 oldbpp != var->bits_per_pixel ||
1280 oldaccel != var->accel_flags) {
1281
1282 struct fb_fix_screeninfo fix;
1283 retz3fb_get_fix(&fix, con, info);
1284
1285 display->screen_base = (char *)zinfo->fbmem;
1286 display->visual = fix.visual;
1287 display->type = fix.type;
1288 display->type_aux = fix.type_aux;
1289 display->ypanstep = fix.ypanstep;
1290 display->ywrapstep = fix.ywrapstep;
1291 display->line_length = fix.line_length;
1292 display->can_soft_blank = 1;
1293 display->inverse = z3fb_inverse;
1294 switch (display->var.bits_per_pixel) {
1295 #ifdef FBCON_HAS_CFB8
1296 case 8:
1297 if (var->accel_flags & FB_ACCELF_TEXT) {
1298 display->dispsw = &fbcon_retz3_8;
1299 } else
1300 display->dispsw = &fbcon_cfb8;
1301 break;
1302 #endif
1303 #ifdef FBCON_HAS_CFB16
1304 case 16:
1305 display->dispsw = &fbcon_cfb16;
1306 break;
1307 #endif
1308 default:
1309 display->dispsw = &fbcon_dummy;
1310 break;
1311 }
1312 /*
1313 * We still need to find a way to tell the X
1314 * server that the video mem has been fiddled with
1315 * so it redraws the entire screen when switching
1316 * between X and a text console.
1317 */
1318 retz3_set_video(info, var, &zinfo->current_par);
1319
1320 if (info->changevar)
1321 (*info->changevar)(con);
1322 }
1323
1324 if (oldbpp != var->bits_per_pixel) {
1325 if ((err = fb_alloc_cmap(&display->cmap, 0, 0)))
1326 return err;
1327 do_install_cmap(con, info);
1328 }
1329 }
1330 return 0;
1331 }
1332
1333
1334 /*
1335 * Get the Colormap
1336 */
1337
1338 static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
1339 struct fb_info *info)
1340 {
1341 struct retz3_fb_info *zinfo = retz3info(info);
1342
1343 if (con == zinfo->currcon) /* current console? */
1344 return(fb_get_cmap(cmap, kspc, retz3_getcolreg, info));
1345 else if (fb_display[con].cmap.len) /* non default colormap? */
1346 fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
1347 else
1348 fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
1349 cmap, kspc ? 0 : 2);
1350 return 0;
1351 }
1352
1353
1354 /*
1355 * Set the Colormap
1356 */
1357
1358 static int retz3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
1359 struct fb_info *info)
1360 {
1361 int err;
1362 struct retz3_fb_info *zinfo = retz3info(info);
1363
1364 if (!fb_display[con].cmap.len) { /* no colormap allocated? */
1365 if ((err = fb_alloc_cmap(&fb_display[con].cmap,
1366 1<<fb_display[con].var.bits_per_pixel,
1367 0)))
1368 return err;
1369 }
1370 if (con == zinfo->currcon) /* current console? */
1371 return(fb_set_cmap(cmap, kspc, retz3_setcolreg, info));
1372 else
1373 fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 1);
1374 return 0;
1375 }
1376
1377
1378 /*
1379 * Pan or Wrap the Display
1380 *
1381 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1382 */
1383
1384 static int retz3fb_pan_display(struct fb_var_screeninfo *var, int con,
1385 struct fb_info *info)
1386 {
1387 return -EINVAL;
1388 }
1389
1390
1391 /*
1392 * RetinaZ3 Frame Buffer Specific ioctls
1393 */
1394
1395 static int retz3fb_ioctl(struct inode *inode, struct file *file,
1396 unsigned int cmd, unsigned long arg, int con,
1397 struct fb_info *info)
1398 {
1399 return -EINVAL;
1400 }
1401
1402
1403 static struct fb_ops retz3fb_ops = {
1404 retz3fb_open, retz3fb_release, retz3fb_get_fix, retz3fb_get_var,
1405 retz3fb_set_var, retz3fb_get_cmap, retz3fb_set_cmap,
1406 retz3fb_pan_display, retz3fb_ioctl
1407 };
1408
1409
1410 __initfunc(void retz3fb_setup(char *options, int *ints))
1411 {
1412 char *this_opt;
1413
1414 if (!options || !*options)
1415 return;
1416
1417 for (this_opt = strtok(options, ","); this_opt;
1418 this_opt = strtok(NULL, ",")){
1419 if (!strcmp(this_opt, "inverse")) {
1420 z3fb_inverse = 1;
1421 fb_invert_cmaps();
1422 } else if (!strncmp(this_opt, "font:", 5)) {
1423 strncpy(fontname, this_opt+5, 39);
1424 fontname[39] = '\0';
1425 }else
1426 z3fb_mode = get_video_mode(this_opt);
1427 }
1428 }
1429
1430
1431 /*
1432 * Initialization
1433 */
1434
1435 __initfunc(void retz3fb_init(void))
1436 {
1437 unsigned long board_addr, board_size;
1438 unsigned int key;
1439 const struct ConfigDev *cd;
1440 volatile unsigned char *regs;
1441 struct retz3fb_par par;
1442 struct retz3_fb_info *zinfo;
1443 struct fb_info *fb_info;
1444 short i;
1445
1446 if (!(key = zorro_find(ZORRO_PROD_MACROSYSTEMS_RETINA_Z3, 0, 0)))
1447 return;
1448
1449 if (!(zinfo = kmalloc(sizeof(struct retz3_fb_info), GFP_KERNEL)))
1450 return;
1451 memset(zinfo, 0, sizeof(struct retz3_fb_info));
1452
1453 cd = zorro_get_board (key);
1454 zorro_config_board (key, 0);
1455 board_addr = (unsigned long)cd->cd_BoardAddr;
1456 board_size = (unsigned long)cd->cd_BoardSize;
1457
1458 zinfo->base = ioremap(board_addr, board_size);
1459 zinfo->regs = (unsigned char *)(zinfo->base);
1460 zinfo->fbmem = zinfo->base + VIDEO_MEM_OFFSET;
1461 /* Get memory size - for now we asume its a 4MB board */
1462 zinfo->fbsize = 0x00400000; /* 4 MB */
1463 zinfo->physregs = board_addr;
1464 zinfo->physfbmem = board_addr + VIDEO_MEM_OFFSET;
1465
1466 fb_info = fbinfo(zinfo);
1467
1468 for (i = 0; i < 256; i++){
1469 for (i = 0; i < 256; i++){
1470 zinfo->color_table[i][0] = i;
1471 zinfo->color_table[i][1] = i;
1472 zinfo->color_table[i][2] = i;
1473 }
1474 }
1475
1476 regs = zinfo->regs;
1477 /* Disable hardware cursor */
1478 seq_w(regs, SEQ_CURSOR_Y_INDEX, 0x00);
1479
1480 retz3_setcolreg (255, 56<<8, 100<<8, 160<<8, 0, fb_info);
1481 retz3_setcolreg (254, 0, 0, 0, 0, fb_info);
1482
1483 strcpy(fb_info->modename, retz3fb_name);
1484 fb_info->changevar = NULL;
1485 fb_info->node = -1;
1486 fb_info->fbops = &retz3fb_ops;
1487 fb_info->disp = &zinfo->disp;
1488 fb_info->switch_con = &z3fb_switch;
1489 fb_info->updatevar = &z3fb_updatevar;
1490 fb_info->blank = &z3fb_blank;
1491 fb_info->flags = FBINFO_FLAG_DEFAULT;
1492 strncpy(fb_info->fontname, fontname, 40);
1493
1494 if (z3fb_mode == -1)
1495 retz3fb_default = retz3fb_predefined[0].var;
1496
1497 retz3_decode_var(&retz3fb_default, &par);
1498 retz3_encode_var(&retz3fb_default, &par);
1499
1500 do_fb_set_var(fb_info, &retz3fb_default, 0);
1501 retz3fb_get_var(&zinfo->disp.var, -1, fb_info);
1502
1503 retz3fb_set_disp(-1, fb_info);
1504
1505 do_install_cmap(0, fb_info);
1506
1507 if (register_framebuffer(fb_info) < 0)
1508 return;
1509
1510 printk("fb%d: %s frame buffer device, using %ldK of video memory\n",
1511 GET_FB_IDX(fb_info->node), fb_info->modename,zinfo->fbsize>>10);
1512
1513 /* TODO: This driver cannot be unloaded yet */
1514 MOD_INC_USE_COUNT;
1515 }
1516
1517
1518 static int z3fb_switch(int con, struct fb_info *info)
1519 {
1520 struct retz3_fb_info *zinfo = retz3info(info);
1521
1522 /* Do we have to save the colormap? */
1523 if (fb_display[zinfo->currcon].cmap.len)
1524 fb_get_cmap(&fb_display[zinfo->currcon].cmap, 1,
1525 retz3_getcolreg, info);
1526
1527 do_fb_set_var(info, &fb_display[con].var, 1);
1528 zinfo->currcon = con;
1529 /* Install new colormap */
1530 do_install_cmap(con, info);
1531 return 0;
1532 }
1533
1534
1535 /*
1536 * Update the `var' structure (called by fbcon.c)
1537 *
1538 * This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
1539 * Since it's called by a kernel driver, no range checking is done.
1540 */
1541
1542 static int z3fb_updatevar(int con, struct fb_info *info)
1543 {
1544 return 0;
1545 }
1546
1547
1548 /*
1549 * Blank the display.
1550 */
1551
1552 static void z3fb_blank(int blank, struct fb_info *info)
1553 {
1554 struct retz3_fb_info *zinfo = retz3info(info);
1555 volatile unsigned char *regs = retz3info(info)->regs;
1556 short i;
1557
1558 if (blank)
1559 for (i = 0; i < 256; i++){
1560 reg_w(regs, VDAC_ADDRESS_W, i);
1561 reg_w(regs, VDAC_DATA, 0);
1562 reg_w(regs, VDAC_DATA, 0);
1563 reg_w(regs, VDAC_DATA, 0);
1564 }
1565 else
1566 for (i = 0; i < 256; i++){
1567 reg_w(regs, VDAC_ADDRESS_W, i);
1568 reg_w(regs, VDAC_DATA, zinfo->color_table[i][0]);
1569 reg_w(regs, VDAC_DATA, zinfo->color_table[i][1]);
1570 reg_w(regs, VDAC_DATA, zinfo->color_table[i][2]);
1571 }
1572 }
1573
1574
1575 /*
1576 * Get a Video Mode
1577 */
1578
1579 __initfunc(static int get_video_mode(const char *name))
1580 {
1581 short i;
1582
1583 for (i = 0; i <= NUM_TOTAL_MODES; i++)
1584 if (!strcmp(name, retz3fb_predefined[i].name)){
1585 retz3fb_default = retz3fb_predefined[i].var;
1586 return i;
1587 }
1588 return -1;
1589 }
1590
1591
1592 #ifdef MODULE
1593 int init_module(void)
1594 {
1595 retz3fb_init();
1596 return 0;
1597 }
1598
1599 void cleanup_module(void)
1600 {
1601 /*
1602 * Not reached because the usecount will never
1603 * be decremented to zero
1604 */
1605 unregister_framebuffer(&fb_info);
1606 /* TODO: clean up ... */
1607 }
1608 #endif
1609
1610
1611 /*
1612 * Text console acceleration
1613 */
1614
1615 #ifdef FBCON_HAS_CFB8
1616 static void fbcon_retz3_8_bmove(struct display *p, int sy, int sx,
1617 int dy, int dx, int height, int width)
1618 {
1619 int fontwidth = fontwidth(p);
1620
1621 sx *= fontwidth;
1622 dx *= fontwidth;
1623 width *= fontwidth;
1624
1625 retz3_bitblt(p,
1626 (unsigned short)sx,
1627 (unsigned short)(sy*fontheight(p)),
1628 (unsigned short)dx,
1629 (unsigned short)(dy*fontheight(p)),
1630 (unsigned short)width,
1631 (unsigned short)(height*fontheight(p)),
1632 Z3BLTcopy,
1633 0xffff);
1634 }
1635
1636 static void fbcon_retz3_8_clear(struct vc_data *conp, struct display *p,
1637 int sy, int sx, int height, int width)
1638 {
1639 unsigned short col;
1640 int fontwidth = fontwidth(p);
1641
1642 sx *= fontwidth;
1643 width *= fontwidth;
1644
1645 col = attr_bgcol_ec(p, conp);
1646 col &= 0xff;
1647 col |= (col << 8);
1648
1649 retz3_bitblt(p,
1650 (unsigned short)sx,
1651 (unsigned short)(sy*fontheight(p)),
1652 (unsigned short)sx,
1653 (unsigned short)(sy*fontheight(p)),
1654 (unsigned short)width,
1655 (unsigned short)(height*fontheight(p)),
1656 Z3BLTset,
1657 col);
1658 }
1659
1660 static struct display_switch fbcon_retz3_8 = {
1661 fbcon_cfb8_setup, fbcon_retz3_8_bmove, fbcon_retz3_8_clear,
1662 fbcon_cfb8_putc, fbcon_cfb8_putcs, fbcon_cfb8_revc, NULL, NULL,
1663 fbcon_cfb8_clear_margins, FONTWIDTH(8)
1664 };
1665 #endif
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