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[linux-block.git] / drivers / video / retz3fb.c
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1da177e4
LT		 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/slab.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
59struct retz3fb_par {
60 int xres;
61 int yres;
62 int xres_vir;
63 int yres_vir;
64 int xoffset;
65 int yoffset;
66 int bpp;
67
68 struct fb_bitfield red;
69 struct fb_bitfield green;
70 struct fb_bitfield blue;
71 struct fb_bitfield transp;
72
73 int pixclock;
74 int left_margin; /* time from sync to picture */
75 int right_margin; /* time from picture to sync */
76 int upper_margin; /* time from sync to picture */
77 int lower_margin;
78 int hsync_len; /* length of horizontal sync */
79 int vsync_len; /* length of vertical sync */
80 int vmode;
81
82 int accel;
83};
84
85struct display_data {
86 long h_total; /* Horizontal Total */
87 long h_sstart; /* Horizontal Sync Start */
88 long h_sstop; /* Horizontal Sync Stop */
89 long h_bstart; /* Horizontal Blank Start */
90 long h_bstop; /* Horizontal Blank Stop */
91 long h_dispend; /* Horizontal Display End */
92 long v_total; /* Vertical Total */
93 long v_sstart; /* Vertical Sync Start */
94 long v_sstop; /* Vertical Sync Stop */
95 long v_bstart; /* Vertical Blank Start */
96 long v_bstop; /* Vertical Blank Stop */
97 long v_dispend; /* Horizontal Display End */
98};
99
100struct retz3_fb_info {
101 struct fb_info info;
102 unsigned char *base;
103 unsigned char *fbmem;
104 unsigned long fbsize;
105 volatile unsigned char *regs;
106 unsigned long physfbmem;
107 unsigned long physregs;
108 int current_par_valid; /* set to 0 by memset */
109 int blitbusy;
110 struct display disp;
111 struct retz3fb_par current_par;
112 unsigned char color_table [256][3];
113};
114
115
116static char fontname[40] __initdata = { 0 };
117
118#define retz3info(info) ((struct retz3_fb_info *)(info))
119#define fbinfo(info) ((struct fb_info *)(info))
120
121
122/*
123 * Frame Buffer Name
124 */
125
126static char retz3fb_name[16] = "RetinaZ3";
127
128
129/*
130 * A small info on how to convert XFree86 timing values into fb
131 * timings - by Frank Neumann:
132 *
133An XFree86 mode line consists of the following fields:
134 "800x600" 50 800 856 976 1040 600 637 643 666
135 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
136
137The fields in the fb_var_screeninfo structure are:
138 unsigned long pixclock; * pixel clock in ps (pico seconds) *
139 unsigned long left_margin; * time from sync to picture *
140 unsigned long right_margin; * time from picture to sync *
141 unsigned long upper_margin; * time from sync to picture *
142 unsigned long lower_margin;
143 unsigned long hsync_len; * length of horizontal sync *
144 unsigned long vsync_len; * length of vertical sync *
145
1461) Pixelclock:
147 xfree: in MHz
148 fb: In Picoseconds (ps)
149
150 pixclock = 1000000 / DCF
151
1522) horizontal timings:
153 left_margin = HFL - SH2
154 right_margin = SH1 - HR
155 hsync_len = SH2 - SH1
156
1573) vertical timings:
158 upper_margin = VFL - SV2
159 lower_margin = SV1 - VR
160 vsync_len = SV2 - SV1
161
162Good examples for VESA timings can be found in the XFree86 source tree,
163under "programs/Xserver/hw/xfree86/doc/modeDB.txt".
164*/
165
166/*
167 * Predefined Video Modes
168 */
169
170static struct {
171 const char *name;
172 struct fb_var_screeninfo var;
173} retz3fb_predefined[] __initdata = {
174 /*
175 * NB: it is very important to adjust the pixel-clock to the color-depth.
176 */
177
178 {
179 "640x480", { /* 640x480, 8 bpp */
180 640, 480, 640, 480, 0, 0, 8, 0,
181 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
182 0, 0, -1, -1, FB_ACCEL_NONE, 39722, 48, 16, 33, 10, 96, 2,
183 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
184 }
185 },
186 /*
187 ModeLine "800x600" 36 800 824 896 1024 600 601 603 625
188 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
189 */
190 {
191 "800x600", { /* 800x600, 8 bpp */
192 800, 600, 800, 600, 0, 0, 8, 0,
193 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
194 0, 0, -1, -1, FB_ACCELF_TEXT, 27778, 64, 24, 22, 1, 120, 2,
195 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
196 }
197 },
198 {
199 "800x600-60", { /* 800x600, 8 bpp */
200 800, 600, 800, 600, 0, 0, 8, 0,
201 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
202 0, 0, -1, -1, FB_ACCELF_TEXT, 25000, 88, 40, 23, 1, 128, 4,
203 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
204 }
205 },
206 {
207 "800x600-70", { /* 800x600, 8 bpp */
208 800, 600, 800, 600, 0, 0, 8, 0,
209 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
210 0, 0, -1, -1, FB_ACCELF_TEXT, 22272, 40, 24, 15, 9, 144, 12,
211 FB_SYNC_COMP_HIGH_ACT, FB_VMODE_NONINTERLACED
212 }
213 },
214 /*
215 ModeLine "1024x768i" 45 1024 1064 1224 1264 768 777 785 817 interlace
216 < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
217 */
218 {
219 "1024x768i", { /* 1024x768, 8 bpp, interlaced */
220 1024, 768, 1024, 768, 0, 0, 8, 0,
221 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
222 0, 0, -1, -1, FB_ACCELF_TEXT, 22222, 40, 40, 32, 9, 160, 8,
223 FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED
224 }
225 },
226 {
227 "1024x768", {
228 1024, 768, 1024, 768, 0, 0, 8, 0,
229 {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
230 0, 0, -1, -1, FB_ACCEL_NONE, 12500, 92, 112, 31, 2, 204, 4,
231 FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
232 }
233 },
234 {
235 "640x480-16", { /* 640x480, 16 bpp */
236 640, 480, 640, 480, 0, 0, 16, 0,
237 {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
238 0, 0, -1, -1, 0, 38461/2, 28, 32, 12, 10, 96, 2,
239 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
240 }
241 },
242 {
243 "640x480-24", { /* 640x480, 24 bpp */
244 640, 480, 640, 480, 0, 0, 24, 0,
245 {8, 8, 8}, {8, 8, 8}, {8, 8, 8}, {0, 0, 0},
246 0, 0, -1, -1, 0, 38461/3, 28, 32, 12, 10, 96, 2,
247 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,FB_VMODE_NONINTERLACED
248 }
249 },
250};
251
252
253#define NUM_TOTAL_MODES ARRAY_SIZE(retz3fb_predefined)
254
255static struct fb_var_screeninfo retz3fb_default;
256
257static int z3fb_inverse = 0;
258static int z3fb_mode __initdata = 0;
259
260
261/*
262 * Interface used by the world
263 */
264
265int retz3fb_setup(char *options);
266
267static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
268 struct fb_info *info);
269static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
270 struct fb_info *info);
271static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
272 struct fb_info *info);
273static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
274 struct fb_info *info);
275static int retz3fb_setcolreg(unsigned int regno, unsigned int red,
276 unsigned int green, unsigned int blue,
277 unsigned int transp, struct fb_info *info);
278static int retz3fb_blank(int blank, struct fb_info *info);
279
280
281/*
282 * Interface to the low level console driver
283 */
284
285int retz3fb_init(void);
286static int z3fb_switch(int con, struct fb_info *info);
287static int z3fb_updatevar(int con, struct fb_info *info);
288
289
290/*
291 * Text console acceleration
292 */
293
294#ifdef FBCON_HAS_CFB8
295static struct display_switch fbcon_retz3_8;
296#endif
297
298
299/*
300 * Accelerated Functions used by the low level console driver
301 */
302
303static void retz3_bitblt(struct display *p,
304 unsigned short curx, unsigned short cury, unsigned
305 short destx, unsigned short desty, unsigned short
306 width, unsigned short height, unsigned short cmd,
307 unsigned short mask);
308
309/*
310 * Hardware Specific Routines
311 */
312
313static int retz3_encode_fix(struct fb_info *info,
314 struct fb_fix_screeninfo *fix,
315 struct retz3fb_par *par);
316static int retz3_decode_var(struct fb_var_screeninfo *var,
317 struct retz3fb_par *par);
318static int retz3_encode_var(struct fb_var_screeninfo *var,
319 struct retz3fb_par *par);
320static int retz3_getcolreg(unsigned int regno, unsigned int *red,
321 unsigned int *green, unsigned int *blue,
322 unsigned int *transp, struct fb_info *info);
323
324/*
325 * Internal routines
326 */
327
328static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par);
329static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par);
330static int do_fb_set_var(struct fb_info *info,
331 struct fb_var_screeninfo *var, int isactive);
332static void retz3fb_set_disp(int con, struct fb_info *info);
333static int get_video_mode(const char *name);
334
335
336/* -------------------- Hardware specific routines ------------------------- */
337
338static unsigned short find_fq(unsigned int freq)
339{
340 unsigned long f;
341 long tmp;
342 long prev = 0x7fffffff;
343 long n2, n1 = 3;
344 unsigned long m;
345 unsigned short res = 0;
346
347 if (freq <= 31250000)
348 n2 = 3;
349 else if (freq <= 62500000)
350 n2 = 2;
351 else if (freq <= 125000000)
352 n2 = 1;
353 else if (freq <= 250000000)
354 n2 = 0;
355 else
356 return 0;
357
358
359 do {
360 f = freq >> (10 - n2);
361
362 m = (f * n1) / (14318180/1024);
363
364 if (m > 129)
365 break;
366
367 tmp = (((m * 14318180) >> n2) / n1) - freq;
368 if (tmp < 0)
369 tmp = -tmp;
370
371 if (tmp < prev) {
372 prev = tmp;
373 res = (((n2 << 5) | (n1-2)) << 8) | (m-2);
374 }
375
376 } while ( (++n1) <= 21);
377
378 return res;
379}
380
381
382static int retz3_set_video(struct fb_info *info,
383 struct fb_var_screeninfo *var,
384 struct retz3fb_par *par)
385{
386 volatile unsigned char *regs = retz3info(info)->regs;
387 unsigned int freq;
388
389 int xres, hfront, hsync, hback;
390 int yres, vfront, vsync, vback;
391 unsigned char tmp;
392 unsigned short best_freq;
393 struct display_data data;
394
395 short clocksel = 0; /* Apparantly this is always zero */
396
397 int bpp = var->bits_per_pixel;
398
399 /*
400 * XXX
401 */
402 if (bpp == 24)
403 return 0;
404
405 if ((bpp != 8) && (bpp != 16) && (bpp != 24))
406 return -EFAULT;
407
408 par->xoffset = 0;
409 par->yoffset = 0;
410
411 xres = var->xres * bpp / 4;
412 hfront = var->right_margin * bpp / 4;
413 hsync = var->hsync_len * bpp / 4;
414 hback = var->left_margin * bpp / 4;
415
416 if (var->vmode & FB_VMODE_DOUBLE)
417 {
418 yres = var->yres * 2;
419 vfront = var->lower_margin * 2;
420 vsync = var->vsync_len * 2;
421 vback = var->upper_margin * 2;
422 }
423 else if (var->vmode & FB_VMODE_INTERLACED)
424 {
425 yres = (var->yres + 1) / 2;
426 vfront = (var->lower_margin + 1) / 2;
427 vsync = (var->vsync_len + 1) / 2;
428 vback = (var->upper_margin + 1) / 2;
429 }
430 else
431 {
432 yres = var->yres; /* -1 ? */
433 vfront = var->lower_margin;
434 vsync = var->vsync_len;
435 vback = var->upper_margin;
436 }
437
438 data.h_total = (hback / 8) + (xres / 8)
439 + (hfront / 8) + (hsync / 8) - 1 /* + 1 */;
440 data.h_dispend = ((xres + bpp - 1)/ 8) - 1;
441 data.h_bstart = xres / 8 - 1 /* + 1 */;
442
443 data.h_bstop = data.h_total+1 + 2 + 1;
444 data.h_sstart = (xres / 8) + (hfront / 8) + 1;
445 data.h_sstop = (xres / 8) + (hfront / 8) + (hsync / 8) + 1;
446
447 data.v_total = yres + vfront + vsync + vback - 1;
448
449 data.v_dispend = yres - 1;
450 data.v_bstart = yres - 1;
451
452 data.v_bstop = data.v_total;
453 data.v_sstart = yres + vfront - 1 - 2;
454 data.v_sstop = yres + vfront + vsync - 1;
455
456#if 0 /* testing */
457
458 printk("HBS: %i\n", data.h_bstart);
459 printk("HSS: %i\n", data.h_sstart);
460 printk("HSE: %i\n", data.h_sstop);
461 printk("HBE: %i\n", data.h_bstop);
462 printk("HT: %i\n", data.h_total);
463
464 printk("hsync: %i\n", hsync);
465 printk("hfront: %i\n", hfront);
466 printk("hback: %i\n", hback);
467
468 printk("VBS: %i\n", data.v_bstart);
469 printk("VSS: %i\n", data.v_sstart);
470 printk("VSE: %i\n", data.v_sstop);
471 printk("VBE: %i\n", data.v_bstop);
472 printk("VT: %i\n", data.v_total);
473
474 printk("vsync: %i\n", vsync);
475 printk("vfront: %i\n", vfront);
476 printk("vback: %i\n", vback);
477#endif
478
479 if (data.v_total >= 1024)
480 printk(KERN_ERR "MAYDAY: v_total >= 1024; bailing out!\n");
481
482 reg_w(regs, GREG_MISC_OUTPUT_W, 0xe3 | ((clocksel & 3) * 0x04));
483 reg_w(regs, GREG_FEATURE_CONTROL_W, 0x00);
484
485 seq_w(regs, SEQ_RESET, 0x00);
486 seq_w(regs, SEQ_RESET, 0x03); /* reset sequencer logic */
487
488 /*
489 * CLOCKING_MODE bits:
490 * 2: This one is only set for certain text-modes, wonder if
491 * it may be for EGA-lines? (it was referred to as CLKDIV2)
492 * (The CL drivers sets it to 0x21 with the comment:
493 * FullBandwidth (video off) and 8/9 dot clock)
494 */
495 seq_w(regs, SEQ_CLOCKING_MODE, 0x01 | 0x00 /* 0x08 */);
496
497 seq_w(regs, SEQ_MAP_MASK, 0x0f); /* enable writing to plane 0-3 */
498 seq_w(regs, SEQ_CHAR_MAP_SELECT, 0x00); /* doesn't matter in gfx-mode */
499 seq_w(regs, SEQ_MEMORY_MODE, 0x06); /* CL driver says 0x0e for 256 col mode*/
500 seq_w(regs, SEQ_RESET, 0x01);
501 seq_w(regs, SEQ_RESET, 0x03);
502
503 seq_w(regs, SEQ_EXTENDED_ENABLE, 0x05);
504
505 seq_w(regs, SEQ_CURSOR_CONTROL, 0x00); /* disable cursor */
506 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
507 seq_w(regs, SEQ_PRIM_HOST_OFF_HI, 0x00);
508 seq_w(regs, SEQ_LINEAR_0, 0x4a);
509 seq_w(regs, SEQ_LINEAR_1, 0x00);
510
511 seq_w(regs, SEQ_SEC_HOST_OFF_HI, 0x00);
512 seq_w(regs, SEQ_SEC_HOST_OFF_LO, 0x00);
513 seq_w(regs, SEQ_EXTENDED_MEM_ENA, 0x3 | 0x4 | 0x10 | 0x40);
514
515 /*
516 * The lower 4 bits (0-3) are used to set the font-width for
517 * text-mode - DON'T try to set this for gfx-mode.
518 */
519 seq_w(regs, SEQ_EXT_CLOCK_MODE, 0x10);
520 seq_w(regs, SEQ_EXT_VIDEO_ADDR, 0x03);
521
522 /*
523 * Extended Pixel Control:
524 * bit 0: text-mode=0, gfx-mode=1 (Graphics Byte ?)
525 * bit 1: (Packed/Nibble Pixel Format ?)
526 * bit 4-5: depth, 0=1-8bpp, 1=9-16bpp, 2=17-24bpp
527 */
528 seq_w(regs, SEQ_EXT_PIXEL_CNTL, 0x01 | (((bpp / 8) - 1) << 4));
529
530 seq_w(regs, SEQ_BUS_WIDTH_FEEDB, 0x04);
531 seq_w(regs, SEQ_COLOR_EXP_WFG, 0x01);
532 seq_w(regs, SEQ_COLOR_EXP_WBG, 0x00);
533 seq_w(regs, SEQ_EXT_RW_CONTROL, 0x00);
534 seq_w(regs, SEQ_MISC_FEATURE_SEL, (0x51 | (clocksel & 8)));
535 seq_w(regs, SEQ_COLOR_KEY_CNTL, 0x40);
536 seq_w(regs, SEQ_COLOR_KEY_MATCH0, 0x00);
537 seq_w(regs, SEQ_COLOR_KEY_MATCH1, 0x00);
538 seq_w(regs, SEQ_COLOR_KEY_MATCH2, 0x00);
539 seq_w(regs, SEQ_CRC_CONTROL, 0x00);
540 seq_w(regs, SEQ_PERF_SELECT, 0x10);
541 seq_w(regs, SEQ_ACM_APERTURE_1, 0x00);
542 seq_w(regs, SEQ_ACM_APERTURE_2, 0x30);
543 seq_w(regs, SEQ_ACM_APERTURE_3, 0x00);
544 seq_w(regs, SEQ_MEMORY_MAP_CNTL, 0x03);
545
546
547 /* unlock register CRT0..CRT7 */
548 crt_w(regs, CRT_END_VER_RETR, (data.v_sstop & 0x0f) | 0x20);
549
550 /* Zuerst zu schreibende Werte nur per printk ausgeben */
551 DEBUG printk("CRT_HOR_TOTAL: %ld\n", data.h_total);
552 crt_w(regs, CRT_HOR_TOTAL, data.h_total & 0xff);
553
554 DEBUG printk("CRT_HOR_DISP_ENA_END: %ld\n", data.h_dispend);
555 crt_w(regs, CRT_HOR_DISP_ENA_END, (data.h_dispend) & 0xff);
556
557 DEBUG printk("CRT_START_HOR_BLANK: %ld\n", data.h_bstart);
558 crt_w(regs, CRT_START_HOR_BLANK, data.h_bstart & 0xff);
559
560 DEBUG printk("CRT_END_HOR_BLANK: 128+%ld\n", data.h_bstop % 32);
561 crt_w(regs, CRT_END_HOR_BLANK, 0x80 | (data.h_bstop & 0x1f));
562
563 DEBUG printk("CRT_START_HOR_RETR: %ld\n", data.h_sstart);
564 crt_w(regs, CRT_START_HOR_RETR, data.h_sstart & 0xff);
565
566 tmp = (data.h_sstop & 0x1f);
567 if (data.h_bstop & 0x20)
568 tmp |= 0x80;
569 DEBUG printk("CRT_END_HOR_RETR: %d\n", tmp);
570 crt_w(regs, CRT_END_HOR_RETR, tmp);
571
572 DEBUG printk("CRT_VER_TOTAL: %ld\n", data.v_total & 0xff);
573 crt_w(regs, CRT_VER_TOTAL, (data.v_total & 0xff));
574
575 tmp = 0x10; /* LineCompare bit #9 */
576 if (data.v_total & 256)
577 tmp |= 0x01;
578 if (data.v_dispend & 256)
579 tmp |= 0x02;
580 if (data.v_sstart & 256)
581 tmp |= 0x04;
582 if (data.v_bstart & 256)
583 tmp |= 0x08;
584 if (data.v_total & 512)
585 tmp |= 0x20;
586 if (data.v_dispend & 512)
587 tmp |= 0x40;
588 if (data.v_sstart & 512)
589 tmp |= 0x80;
590 DEBUG printk("CRT_OVERFLOW: %d\n", tmp);
591 crt_w(regs, CRT_OVERFLOW, tmp);
592
593 crt_w(regs, CRT_PRESET_ROW_SCAN, 0x00); /* not CL !!! */
594
595 tmp = 0x40; /* LineCompare bit #8 */
596 if (data.v_bstart & 512)
597 tmp |= 0x20;
598 if (var->vmode & FB_VMODE_DOUBLE)
599 tmp |= 0x80;
600 DEBUG printk("CRT_MAX_SCAN_LINE: %d\n", tmp);
601 crt_w(regs, CRT_MAX_SCAN_LINE, tmp);
602
603 crt_w(regs, CRT_CURSOR_START, 0x00);
604 crt_w(regs, CRT_CURSOR_END, 8 & 0x1f); /* font height */
605
606 crt_w(regs, CRT_START_ADDR_HIGH, 0x00);
607 crt_w(regs, CRT_START_ADDR_LOW, 0x00);
608
609 crt_w(regs, CRT_CURSOR_LOC_HIGH, 0x00);
610 crt_w(regs, CRT_CURSOR_LOC_LOW, 0x00);
611
612 DEBUG printk("CRT_START_VER_RETR: %ld\n", data.v_sstart & 0xff);
613 crt_w(regs, CRT_START_VER_RETR, (data.v_sstart & 0xff));
614
615#if 1
616 /* 5 refresh cycles per scanline */
617 DEBUG printk("CRT_END_VER_RETR: 64+32+%ld\n", data.v_sstop % 16);
618 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 0x40 | 0x20));
619#else
620 DEBUG printk("CRT_END_VER_RETR: 128+32+%ld\n", data.v_sstop % 16);
621 crt_w(regs, CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 128 | 32));
622#endif
623 DEBUG printk("CRT_VER_DISP_ENA_END: %ld\n", data.v_dispend & 0xff);
624 crt_w(regs, CRT_VER_DISP_ENA_END, (data.v_dispend & 0xff));
625
626 DEBUG printk("CRT_START_VER_BLANK: %ld\n", data.v_bstart & 0xff);
627 crt_w(regs, CRT_START_VER_BLANK, (data.v_bstart & 0xff));
628
629 DEBUG printk("CRT_END_VER_BLANK: %ld\n", data.v_bstop & 0xff);
630 crt_w(regs, CRT_END_VER_BLANK, (data.v_bstop & 0xff));
631
632 DEBUG printk("CRT_MODE_CONTROL: 0xe3\n");
633 crt_w(regs, CRT_MODE_CONTROL, 0xe3);
634
635 DEBUG printk("CRT_LINE_COMPARE: 0xff\n");
636 crt_w(regs, CRT_LINE_COMPARE, 0xff);
637
638 tmp = (var->xres_virtual / 8) * (bpp / 8);
639 crt_w(regs, CRT_OFFSET, tmp);
640
641 crt_w(regs, CRT_UNDERLINE_LOC, 0x07); /* probably font-height - 1 */
642
643 tmp = 0x20; /* Enable extended end bits */
644 if (data.h_total & 0x100)
645 tmp |= 0x01;
646 if ((data.h_dispend) & 0x100)
647 tmp |= 0x02;
648 if (data.h_bstart & 0x100)
649 tmp |= 0x04;
650 if (data.h_sstart & 0x100)
651 tmp |= 0x08;
652 if (var->vmode & FB_VMODE_INTERLACED)
653 tmp |= 0x10;
654 DEBUG printk("CRT_EXT_HOR_TIMING1: %d\n", tmp);
655 crt_w(regs, CRT_EXT_HOR_TIMING1, tmp);
656
657 tmp = 0x00;
658 if (((var->xres_virtual / 8) * (bpp / 8)) & 0x100)
659 tmp |= 0x10;
660 crt_w(regs, CRT_EXT_START_ADDR, tmp);
661
662 tmp = 0x00;
663 if (data.h_total & 0x200)
664 tmp |= 0x01;
665 if ((data.h_dispend) & 0x200)
666 tmp |= 0x02;
667 if (data.h_bstart & 0x200)
668 tmp |= 0x04;
669 if (data.h_sstart & 0x200)
670 tmp |= 0x08;
671 tmp |= ((data.h_bstop & 0xc0) >> 2);
672 tmp |= ((data.h_sstop & 0x60) << 1);
673 crt_w(regs, CRT_EXT_HOR_TIMING2, tmp);
674 DEBUG printk("CRT_EXT_HOR_TIMING2: %d\n", tmp);
675
676 tmp = 0x10; /* Line compare bit 10 */
677 if (data.v_total & 0x400)
678 tmp |= 0x01;
679 if ((data.v_dispend) & 0x400)
680 tmp |= 0x02;
681 if (data.v_bstart & 0x400)
682 tmp |= 0x04;
683 if (data.v_sstart & 0x400)
684 tmp |= 0x08;
685 tmp |= ((data.v_bstop & 0x300) >> 3);
686 if (data.v_sstop & 0x10)
687 tmp |= 0x80;
688 crt_w(regs, CRT_EXT_VER_TIMING, tmp);
689 DEBUG printk("CRT_EXT_VER_TIMING: %d\n", tmp);
690
691 crt_w(regs, CRT_MONITOR_POWER, 0x00);
692
693 /*
694 * Convert from ps to Hz.
695 */
696 freq = 2000000000 / var->pixclock;
697 freq = freq * 500;
698
699 best_freq = find_fq(freq);
700 pll_w(regs, 0x02, best_freq);
701 best_freq = find_fq(61000000);
702 pll_w(regs, 0x0a, best_freq);
703 pll_w(regs, 0x0e, 0x22);
704
705 gfx_w(regs, GFX_SET_RESET, 0x00);
706 gfx_w(regs, GFX_ENABLE_SET_RESET, 0x00);
707 gfx_w(regs, GFX_COLOR_COMPARE, 0x00);
708 gfx_w(regs, GFX_DATA_ROTATE, 0x00);
709 gfx_w(regs, GFX_READ_MAP_SELECT, 0x00);
710 gfx_w(regs, GFX_GRAPHICS_MODE, 0x00);
711 gfx_w(regs, GFX_MISC, 0x05);
712 gfx_w(regs, GFX_COLOR_XCARE, 0x0f);
713 gfx_w(regs, GFX_BITMASK, 0xff);
714
715 reg_r(regs, ACT_ADDRESS_RESET);
716 attr_w(regs, ACT_PALETTE0 , 0x00);
717 attr_w(regs, ACT_PALETTE1 , 0x01);
718 attr_w(regs, ACT_PALETTE2 , 0x02);
719 attr_w(regs, ACT_PALETTE3 , 0x03);
720 attr_w(regs, ACT_PALETTE4 , 0x04);
721 attr_w(regs, ACT_PALETTE5 , 0x05);
722 attr_w(regs, ACT_PALETTE6 , 0x06);
723 attr_w(regs, ACT_PALETTE7 , 0x07);
724 attr_w(regs, ACT_PALETTE8 , 0x08);
725 attr_w(regs, ACT_PALETTE9 , 0x09);
726 attr_w(regs, ACT_PALETTE10, 0x0a);
727 attr_w(regs, ACT_PALETTE11, 0x0b);
728 attr_w(regs, ACT_PALETTE12, 0x0c);
729 attr_w(regs, ACT_PALETTE13, 0x0d);
730 attr_w(regs, ACT_PALETTE14, 0x0e);
731 attr_w(regs, ACT_PALETTE15, 0x0f);
732 reg_r(regs, ACT_ADDRESS_RESET);
733
734 attr_w(regs, ACT_ATTR_MODE_CNTL, 0x09); /* 0x01 for CL */
735
736 attr_w(regs, ACT_OVERSCAN_COLOR, 0x00);
737 attr_w(regs, ACT_COLOR_PLANE_ENA, 0x0f);
738 attr_w(regs, ACT_HOR_PEL_PANNING, 0x00);
739 attr_w(regs, ACT_COLOR_SELECT, 0x00);
740
741 reg_r(regs, ACT_ADDRESS_RESET);
742 reg_w(regs, ACT_DATA, 0x20);
743
744 reg_w(regs, VDAC_MASK, 0xff);
745
746 /*
747 * Extended palette addressing ???
748 */
749 switch (bpp){
750 case 8:
751 reg_w(regs, 0x83c6, 0x00);
752 break;
753 case 16:
754 reg_w(regs, 0x83c6, 0x60);
755 break;
756 case 24:
757 reg_w(regs, 0x83c6, 0xe0);
758 break;
759 default:
760 printk(KERN_INFO "Illegal color-depth: %i\n", bpp);
761 }
762
763 reg_w(regs, VDAC_ADDRESS, 0x00);
764
765 seq_w(regs, SEQ_MAP_MASK, 0x0f );
766
767 return 0;
768}
769
770
771/*
772 * This function should fill in the `fix' structure based on the
773 * values in the `par' structure.
774 */
775
776static int retz3_encode_fix(struct fb_info *info,
777 struct fb_fix_screeninfo *fix,
778 struct retz3fb_par *par)
779{
780 struct retz3_fb_info *zinfo = retz3info(info);
781
782 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
783 strcpy(fix->id, retz3fb_name);
784 fix->smem_start = zinfo->physfbmem;
785 fix->smem_len = zinfo->fbsize;
786 fix->mmio_start = zinfo->physregs;
787 fix->mmio_len = 0x00c00000;
788
789 fix->type = FB_TYPE_PACKED_PIXELS;
790 fix->type_aux = 0;
791 if (par->bpp == 8)
792 fix->visual = FB_VISUAL_PSEUDOCOLOR;
793 else
794 fix->visual = FB_VISUAL_TRUECOLOR;
795
796 fix->xpanstep = 0;
797 fix->ypanstep = 0;
798 fix->ywrapstep = 0;
799 fix->line_length = 0;
800
801 fix->accel = FB_ACCEL_NCR_77C32BLT;
802
803 return 0;
804}
805
806
807/*
808 * Get the video params out of `var'. If a value doesn't fit, round
809 * it up, if it's too big, return -EINVAL.
810 */
811
812static int retz3_decode_var(struct fb_var_screeninfo *var,
813 struct retz3fb_par *par)
814{
815 par->xres = var->xres;
816 par->yres = var->yres;
817 par->xres_vir = var->xres_virtual;
818 par->yres_vir = var->yres_virtual;
819 par->bpp = var->bits_per_pixel;
820 par->pixclock = var->pixclock;
821 par->vmode = var->vmode;
822
823 par->red = var->red;
824 par->green = var->green;
825 par->blue = var->blue;
826 par->transp = var->transp;
827
828 par->left_margin = var->left_margin;
829 par->right_margin = var->right_margin;
830 par->upper_margin = var->upper_margin;
831 par->lower_margin = var->lower_margin;
832 par->hsync_len = var->hsync_len;
833 par->vsync_len = var->vsync_len;
834
835 if (var->accel_flags & FB_ACCELF_TEXT)
836 par->accel = FB_ACCELF_TEXT;
837 else
838 par->accel = 0;
839
840 return 0;
841}
842
843
844/*
845 * Fill the `var' structure based on the values in `par' and maybe
846 * other values read out of the hardware.
847 */
848
849static int retz3_encode_var(struct fb_var_screeninfo *var,
850 struct retz3fb_par *par)
851{
852 memset(var, 0, sizeof(struct fb_var_screeninfo));
853 var->xres = par->xres;
854 var->yres = par->yres;
855 var->xres_virtual = par->xres_vir;
856 var->yres_virtual = par->yres_vir;
857 var->xoffset = 0;
858 var->yoffset = 0;
859
860 var->bits_per_pixel = par->bpp;
861 var->grayscale = 0;
862
863 var->red = par->red;
864 var->green = par->green;
865 var->blue = par->blue;
866 var->transp = par->transp;
867
868 var->nonstd = 0;
869 var->activate = 0;
870
871 var->height = -1;
872 var->width = -1;
873
874 var->accel_flags = (par->accel && par->bpp == 8) ? FB_ACCELF_TEXT : 0;
875
876 var->pixclock = par->pixclock;
877
878 var->sync = 0; /* ??? */
879 var->left_margin = par->left_margin;
880 var->right_margin = par->right_margin;
881 var->upper_margin = par->upper_margin;
882 var->lower_margin = par->lower_margin;
883 var->hsync_len = par->hsync_len;
884 var->vsync_len = par->vsync_len;
885
886 var->vmode = par->vmode;
887 return 0;
888}
889
890
891/*
892 * Set a single color register. Return != 0 for invalid regno.
893 */
894
895static int retz3fb_setcolreg(unsigned int regno, unsigned int red,
896 unsigned int green, unsigned int blue,
897 unsigned int transp, struct fb_info *info)
898{
899 struct retz3_fb_info *zinfo = retz3info(info);
900 volatile unsigned char *regs = zinfo->regs;
901
902 /* We'll get to this */
903
904 if (regno > 255)
905 return 1;
906
907 red >>= 10;
908 green >>= 10;
909 blue >>= 10;
910
911 zinfo->color_table[regno][0] = red;
912 zinfo->color_table[regno][1] = green;
913 zinfo->color_table[regno][2] = blue;
914
915 reg_w(regs, VDAC_ADDRESS_W, regno);
916 reg_w(regs, VDAC_DATA, red);
917 reg_w(regs, VDAC_DATA, green);
918 reg_w(regs, VDAC_DATA, blue);
919
920 return 0;
921}
922
923
924/*
925 * Read a single color register and split it into
926 * colors/transparent. Return != 0 for invalid regno.
927 */
928
929static int retz3_getcolreg(unsigned int regno, unsigned int *red,
930 unsigned int *green, unsigned int *blue,
931 unsigned int *transp, struct fb_info *info)
932{
933 struct retz3_fb_info *zinfo = retz3info(info);
934 int t;
935
936 if (regno > 255)
937 return 1;
938 t = zinfo->color_table[regno][0];
939 *red = (t<<10) | (t<<4) | (t>>2);
940 t = zinfo->color_table[regno][1];
941 *green = (t<<10) | (t<<4) | (t>>2);
942 t = zinfo->color_table[regno][2];
943 *blue = (t<<10) | (t<<4) | (t>>2);
944 *transp = 0;
945 return 0;
946}
947
948
949static inline void retz3_busy(struct display *p)
950{
951 struct retz3_fb_info *zinfo = retz3info(p->fb_info);
952 volatile unsigned char *acm = zinfo->base + ACM_OFFSET;
953 unsigned char blt_status;
954
955 if (zinfo->blitbusy) {
956 do{
957 blt_status = *((acm) + (ACM_START_STATUS + 2));
958 }while ((blt_status & 1) == 0);
959 zinfo->blitbusy = 0;
960 }
961}
962
963
964static void retz3_bitblt (struct display *p,
965 unsigned short srcx, unsigned short srcy,
966 unsigned short destx, unsigned short desty,
967 unsigned short width, unsigned short height,
968 unsigned short cmd, unsigned short mask)
969{
970 struct fb_var_screeninfo *var = &p->var;
971 struct retz3_fb_info *zinfo = retz3info(p->fb_info);
972 volatile unsigned long *acm = (unsigned long *)(zinfo->base + ACM_OFFSET);
973 unsigned long *pattern = (unsigned long *)(zinfo->fbmem + PAT_MEM_OFF);
974
975 unsigned short mod;
976 unsigned long tmp;
977 unsigned long pat, src, dst;
978
979 int i, xres_virtual = var->xres_virtual;
980 short bpp = (var->bits_per_pixel & 0xff);
981
982 if (bpp < 8)
983 bpp = 8;
984
985 tmp = mask | (mask << 16);
986
987 retz3_busy(p);
988
989 i = 0;
990 do{
991 *pattern++ = tmp;
992 }while(i++ < bpp/4);
993
994 tmp = cmd << 8;
995 *(acm + ACM_RASTEROP_ROTATION/4) = tmp;
996
997 mod = 0xc0c2;
998
999 pat = 8 * PAT_MEM_OFF;
1000 dst = bpp * (destx + desty * xres_virtual);
1001
1002 /*
1003 * Source is not set for clear.
1004 */
1005 if ((cmd != Z3BLTclear) && (cmd != Z3BLTset)) {
1006 src = bpp * (srcx + srcy * xres_virtual);
1007
1008 if (destx > srcx) {
1009 mod &= ~0x8000;
1010 src += bpp * (width - 1);
1011 dst += bpp * (width - 1);
1012 pat += bpp * 2;
1013 }
1014 if (desty > srcy) {
1015 mod &= ~0x4000;
1016 src += bpp * (height - 1) * xres_virtual;
1017 dst += bpp * (height - 1) * xres_virtual;
1018 pat += bpp * 4;
1019 }
1020
1021 *(acm + ACM_SOURCE/4) = cpu_to_le32(src);
1022 }
1023
1024 *(acm + ACM_PATTERN/4) = cpu_to_le32(pat);
1025
1026 *(acm + ACM_DESTINATION/4) = cpu_to_le32(dst);
1027
1028 tmp = mod << 16;
1029 *(acm + ACM_CONTROL/4) = tmp;
1030
1031 tmp = width | (height << 16);
1032
1033 *(acm + ACM_BITMAP_DIMENSION/4) = cpu_to_le32(tmp);
1034
1035 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x00;
1036 *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x01;
1037 zinfo->blitbusy = 1;
1038}
1039
1040#if 0
1041/*
1042 * Move cursor to x, y
1043 */
1044static void retz3_MoveCursor (unsigned short x, unsigned short y)
1045{
1046 /* Guess we gotta deal with the cursor at some point */
1047}
1048#endif
1049
1050
1051/*
1052 * Fill the hardware's `par' structure.
1053 */
1054
1055static void retz3fb_get_par(struct fb_info *info, struct retz3fb_par *par)
1056{
1057 struct retz3_fb_info *zinfo = retz3info(info);
1058
1059 if (zinfo->current_par_valid)
1060 *par = zinfo->current_par;
1061 else
1062 retz3_decode_var(&retz3fb_default, par);
1063}
1064
1065
1066static void retz3fb_set_par(struct fb_info *info, struct retz3fb_par *par)
1067{
1068 struct retz3_fb_info *zinfo = retz3info(info);
1069
1070 zinfo->current_par = *par;
1071 zinfo->current_par_valid = 1;
1072}
1073
1074
1075static int do_fb_set_var(struct fb_info *info,
1076 struct fb_var_screeninfo *var, int isactive)
1077{
1078 int err, activate;
1079 struct retz3fb_par par;
1080 struct retz3_fb_info *zinfo = retz3info(info);
1081
1082 if ((err = retz3_decode_var(var, &par)))
1083 return err;
1084 activate = var->activate;
1085
1086 /* XXX ... what to do about isactive ? */
1087
1088 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
1089 retz3fb_set_par(info, &par);
1090 retz3_encode_var(var, &par);
1091 var->activate = activate;
1092
1093 retz3_set_video(info, var, &zinfo->current_par);
1094
1095 return 0;
1096}
1097
1098/*
1099 * Get the Fixed Part of the Display
1100 */
1101
1102static int retz3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
1103 struct fb_info *info)
1104{
1105 struct retz3fb_par par;
1106 int error = 0;
1107
1108 if (con == -1)
1109 retz3fb_get_par(info, &par);
1110 else
1111 error = retz3_decode_var(&fb_display[con].var, &par);
1112 return(error ? error : retz3_encode_fix(info, fix, &par));
1113}
1114
1115
1116/*
1117 * Get the User Defined Part of the Display
1118 */
1119
1120static int retz3fb_get_var(struct fb_var_screeninfo *var, int con,
1121 struct fb_info *info)
1122{
1123 struct retz3fb_par par;
1124 int error = 0;
1125
1126 if (con == -1) {
1127 retz3fb_get_par(info, &par);
1128 error = retz3_encode_var(var, &par);
1129 } else
1130 *var = fb_display[con].var;
1131 return error;
1132}
1133
1134
1135static void retz3fb_set_disp(int con, struct fb_info *info)
1136{
1137 struct fb_fix_screeninfo fix;
1138 struct display *display;
1139 struct retz3_fb_info *zinfo = retz3info(info);
1140
1141 if (con >= 0)
1142 display = &fb_display[con];
1143 else
1144 display = &zinfo->disp; /* used during initialization */
1145
1146 retz3fb_get_fix(&fix, con, info);
1147
1148 if (con == -1)
1149 con = 0;
1150
1151 display->visual = fix.visual;
1152 display->type = fix.type;
1153 display->type_aux = fix.type_aux;
1154 display->ypanstep = fix.ypanstep;
1155 display->ywrapstep = fix.ywrapstep;
1156 display->can_soft_blank = 1;
1157 display->inverse = z3fb_inverse;
1158
1159 /*
1160 * This seems to be about 20% faster.
1161 */
1162 display->scrollmode = SCROLL_YREDRAW;
1163
1164 switch (display->var.bits_per_pixel) {
1165#ifdef FBCON_HAS_CFB8
1166 case 8:
1167 if (display->var.accel_flags & FB_ACCELF_TEXT) {
1168 display->dispsw = &fbcon_retz3_8;
1169 retz3_set_video(info, &display->var, &zinfo->current_par);
1170 } else
1171 display->dispsw = &fbcon_cfb8;
1172 break;
1173#endif
1174#ifdef FBCON_HAS_CFB16
1175 case 16:
1176 display->dispsw = &fbcon_cfb16;
1177 break;
1178#endif
1179 default:
1180 display->dispsw = &fbcon_dummy;
1181 break;
1182 }
1183}
1184
1185
1186/*
1187 * Set the User Defined Part of the Display
1188 */
1189
1190static int retz3fb_set_var(struct fb_var_screeninfo *var, int con,
1191 struct fb_info *info)
1192{
1193 int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
1194 struct display *display;
1195 struct retz3_fb_info *zinfo = retz3info(info);
1196
1197 if (con >= 0)
1198 display = &fb_display[con];
1199 else
1200 display = &zinfo->disp; /* used during initialization */
1201
1202 if ((err = do_fb_set_var(info, var, con == info->currcon)))
1203 return err;
1204 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
1205 oldxres = display->var.xres;
1206 oldyres = display->var.yres;
1207 oldvxres = display->var.xres_virtual;
1208 oldvyres = display->var.yres_virtual;
1209 oldbpp = display->var.bits_per_pixel;
1210 oldaccel = display->var.accel_flags;
1211 display->var = *var;
1212
1213 if (oldxres != var->xres || oldyres != var->yres ||
1214 oldvxres != var->xres_virtual ||
1215 oldvyres != var->yres_virtual ||
1216 oldbpp != var->bits_per_pixel ||
1217 oldaccel != var->accel_flags) {
1218
1219 struct fb_fix_screeninfo fix;
1220 retz3fb_get_fix(&fix, con, info);
1221
1222 display->visual = fix.visual;
1223 display->type = fix.type;
1224 display->type_aux = fix.type_aux;
1225 display->ypanstep = fix.ypanstep;
1226 display->ywrapstep = fix.ywrapstep;
1227 display->line_length = fix.line_length;
1228 display->can_soft_blank = 1;
1229 display->inverse = z3fb_inverse;
1230 switch (display->var.bits_per_pixel) {
1231#ifdef FBCON_HAS_CFB8
1232 case 8:
1233 if (var->accel_flags & FB_ACCELF_TEXT) {
1234 display->dispsw = &fbcon_retz3_8;
1235 } else
1236 display->dispsw = &fbcon_cfb8;
1237 break;
1238#endif
1239#ifdef FBCON_HAS_CFB16
1240 case 16:
1241 display->dispsw = &fbcon_cfb16;
1242 break;
1243#endif
1244 default:
1245 display->dispsw = &fbcon_dummy;
1246 break;
1247 }
1248 /*
1249 * We still need to find a way to tell the X
1250 * server that the video mem has been fiddled with
1251 * so it redraws the entire screen when switching
1252 * between X and a text console.
1253 */
1254 retz3_set_video(info, var, &zinfo->current_par);
1255
1256 if (info->changevar)
1257 (*info->changevar)(con);
1258 }
1259
1260 if (oldbpp != var->bits_per_pixel) {
1261 if ((err = fb_alloc_cmap(&display->cmap, 0, 0)))
1262 return err;
1263 do_install_cmap(con, info);
1264 }
1265 }
1266 return 0;
1267}
1268
1269
1270/*
1271 * Get the Colormap
1272 */
1273
1274static int retz3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
1275 struct fb_info *info)
1276{
1277 if (con == info->currcon) /* current console? */
1278 return(fb_get_cmap(cmap, kspc, retz3_getcolreg, info));
1279 else if (fb_display[con].cmap.len) /* non default colormap? */
1280 fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
1281 else
1282 fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
1283 cmap, kspc ? 0 : 2);
1284 return 0;
1285}
1286
1287/*
1288 * Blank the display.
1289 */
1290
1291static int retz3fb_blank(int blank, struct fb_info *info)
1292{
1293 struct retz3_fb_info *zinfo = retz3info(info);
1294 volatile unsigned char *regs = retz3info(info)->regs;
1295 short i;
1296
1297 if (blank)
1298 for (i = 0; i < 256; i++){
1299 reg_w(regs, VDAC_ADDRESS_W, i);
1300 reg_w(regs, VDAC_DATA, 0);
1301 reg_w(regs, VDAC_DATA, 0);
1302 reg_w(regs, VDAC_DATA, 0);
1303 }
1304 else
1305 for (i = 0; i < 256; i++){
1306 reg_w(regs, VDAC_ADDRESS_W, i);
1307 reg_w(regs, VDAC_DATA, zinfo->color_table[i][0]);
1308 reg_w(regs, VDAC_DATA, zinfo->color_table[i][1]);
1309 reg_w(regs, VDAC_DATA, zinfo->color_table[i][2]);
1310 }
1311 return 0;
1312}
1313
1314static struct fb_ops retz3fb_ops = {
1315 .owner = THIS_MODULE,
1316 .fb_get_fix = retz3fb_get_fix,
1317 .fb_get_var = retz3fb_get_var,
1318 .fb_set_var = retz3fb_set_var,
1319 .fb_get_cmap = retz3fb_get_cmap,
1320 .fb_set_cmap = gen_set_cmap,
1321 .fb_setcolreg = retz3fb_setcolreg,
1322 .fb_blank = retz3fb_blank,
1323};
1324
1325int __init retz3fb_setup(char *options)
1326{
1327 char *this_opt;
1328
1329 if (!options || !*options)
1330 return 0;
1331
1332 while ((this_opt = strsep(&options, ",")) != NULL) {
1333 if (!*this_opt)
1334 continue;
1335 if (!strcmp(this_opt, "inverse")) {
1336 z3fb_inverse = 1;
1337 fb_invert_cmaps();
1338 } else if (!strncmp(this_opt, "font:", 5)) {
1339 strlcpy(fontname, this_opt+5, sizeof(fontname));
1340 } else
1341 z3fb_mode = get_video_mode(this_opt);
1342 }
1343 return 0;
1344}
1345
1346
1347/*
1348 * Initialization
1349 */
1350
1351int __init retz3fb_init(void)
1352{
1353 unsigned long board_addr, board_size;
1354 struct zorro_dev *z = NULL;
1355 volatile unsigned char *regs;
1356 struct retz3fb_par par;
1357 struct retz3_fb_info *zinfo;
1358 struct fb_info *fb_info;
1359 short i;
1360 int res = -ENXIO;
1361
1362 while ((z = zorro_find_device(ZORRO_PROD_MACROSYSTEMS_RETINA_Z3, z))) {
1363 board_addr = z->resource.start;
1364 board_size = z->resource.end-z->resource.start+1;
1365 if (!request_mem_region(board_addr, 0x0c00000,
1366 "ncr77c32blt")) {
1367 continue;
1368 if (!request_mem_region(board_addr+VIDEO_MEM_OFFSET,
1369 0x00400000, "RAM"))
1370 release_mem_region(board_addr, 0x00c00000);
1371 continue;
1372 }
1373 if (!(zinfo = kmalloc(sizeof(struct retz3_fb_info),
1374 GFP_KERNEL)))
1375 return -ENOMEM;
1376 memset(zinfo, 0, sizeof(struct retz3_fb_info));
1377
1378 zinfo->base = ioremap(board_addr, board_size);
1379 zinfo->regs = zinfo->base;
1380 zinfo->fbmem = zinfo->base + VIDEO_MEM_OFFSET;
1381 /* Get memory size - for now we asume it's a 4MB board */
1382 zinfo->fbsize = 0x00400000; /* 4 MB */
1383 zinfo->physregs = board_addr;
1384 zinfo->physfbmem = board_addr + VIDEO_MEM_OFFSET;
1385
1386 fb_info = fbinfo(zinfo);
1387
1388 for (i = 0; i < 256; i++){
1389 for (i = 0; i < 256; i++){
1390 zinfo->color_table[i][0] = i;
1391 zinfo->color_table[i][1] = i;
1392 zinfo->color_table[i][2] = i;
1393 }
1394 }
1395
1396 regs = zinfo->regs;
1397 /* Disable hardware cursor */
1398 seq_w(regs, SEQ_CURSOR_Y_INDEX, 0x00);
1399
1400 retz3fb_setcolreg (255, 56<<8, 100<<8, 160<<8, 0, fb_info);
1401 retz3fb_setcolreg (254, 0, 0, 0, 0, fb_info);
1402
1403 strcpy(fb_info->modename, retz3fb_name);
1404 fb_info->changevar = NULL;
1405 fb_info->fbops = &retz3fb_ops;
1406 fb_info->screen_base = zinfo->fbmem;
1407 fb_info->disp = &zinfo->disp;
1408 fb_info->currcon = -1;
1409 fb_info->switch_con = &z3fb_switch;
1410 fb_info->updatevar = &z3fb_updatevar;
1411 fb_info->flags = FBINFO_FLAG_DEFAULT;
1412 strlcpy(fb_info->fontname, fontname, sizeof(fb_info->fontname));
1413
1414 if (z3fb_mode == -1)
1415 retz3fb_default = retz3fb_predefined[0].var;
1416
1417 retz3_decode_var(&retz3fb_default, &par);
1418 retz3_encode_var(&retz3fb_default, &par);
1419
1420 do_fb_set_var(fb_info, &retz3fb_default, 0);
1421 retz3fb_get_var(&zinfo->disp.var, -1, fb_info);
1422
1423 retz3fb_set_disp(-1, fb_info);
1424
1425 do_install_cmap(0, fb_info);
1426
1427 if (register_framebuffer(fb_info) < 0)
1428 return -EINVAL;
1429
1430 printk(KERN_INFO "fb%d: %s frame buffer device, using %ldK of "
1431 "video memory\n", fb_info->node,
1432 fb_info->modename, zinfo->fbsize>>10);
1433
1434 /* FIXME: This driver cannot be unloaded yet */
1435 res = 0;
1436 }
1437 return res;
1438}
1439
1440
1441static int z3fb_switch(int con, struct fb_info *info)
1442{
1443 /* Do we have to save the colormap? */
1444 if (fb_display[info->currcon].cmap.len)
1445 fb_get_cmap(&fb_display[info->currcon].cmap, 1,
1446 retz3_getcolreg, info);
1447
1448 do_fb_set_var(info, &fb_display[con].var, 1);
1449 info->currcon = con;
1450 /* Install new colormap */
1451 do_install_cmap(con, info);
1452 return 0;
1453}
1454
1455
1456/*
1457 * Update the `var' structure (called by fbcon.c)
1458 *
1459 * This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
1460 * Since it's called by a kernel driver, no range checking is done.
1461 */
1462
1463static int z3fb_updatevar(int con, struct fb_info *info)
1464{
1465 return 0;
1466}
1467
1468/*
1469 * Get a Video Mode
1470 */
1471
1472static int __init get_video_mode(const char *name)
1473{
1474 short i;
1475
1476 for (i = 0; i < NUM_TOTAL_MODES; i++)
1477 if (!strcmp(name, retz3fb_predefined[i].name)){
1478 retz3fb_default = retz3fb_predefined[i].var;
1479 return i;
1480 }
1481 return -1;
1482}
1483
1484
1485#ifdef MODULE
1486MODULE_LICENSE("GPL");
1487
1488int init_module(void)
1489{
1490 return retz3fb_init();
1491}
1492#endif
1493
1494
1495/*
1496 * Text console acceleration
1497 */
1498
1499#ifdef FBCON_HAS_CFB8
1500static void retz3_8_bmove(struct display *p, int sy, int sx,
1501 int dy, int dx, int height, int width)
1502{
1503 int fontwidth = fontwidth(p);
1504
1505 sx *= fontwidth;
1506 dx *= fontwidth;
1507 width *= fontwidth;
1508
1509 retz3_bitblt(p,
1510 (unsigned short)sx,
1511 (unsigned short)(sy*fontheight(p)),
1512 (unsigned short)dx,
1513 (unsigned short)(dy*fontheight(p)),
1514 (unsigned short)width,
1515 (unsigned short)(height*fontheight(p)),
1516 Z3BLTcopy,
1517 0xffff);
1518}
1519
1520static void retz3_8_clear(struct vc_data *conp, struct display *p,
1521 int sy, int sx, int height, int width)
1522{
1523 unsigned short col;
1524 int fontwidth = fontwidth(p);
1525
1526 sx *= fontwidth;
1527 width *= fontwidth;
1528
1529 col = attr_bgcol_ec(p, conp);
1530 col &= 0xff;
1531 col |= (col << 8);
1532
1533 retz3_bitblt(p,
1534 (unsigned short)sx,
1535 (unsigned short)(sy*fontheight(p)),
1536 (unsigned short)sx,
1537 (unsigned short)(sy*fontheight(p)),
1538 (unsigned short)width,
1539 (unsigned short)(height*fontheight(p)),
1540 Z3BLTset,
1541 col);
1542}
1543
1544
1545static void retz3_putc(struct vc_data *conp, struct display *p, int c,
1546 int yy, int xx)
1547{
1548 retz3_busy(p);
1549 fbcon_cfb8_putc(conp, p, c, yy, xx);
1550}
1551
1552
1553static void retz3_putcs(struct vc_data *conp, struct display *p,
1554 const unsigned short *s, int count,
1555 int yy, int xx)
1556{
1557 retz3_busy(p);
1558 fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
1559}
1560
1561
1562static void retz3_revc(struct display *p, int xx, int yy)
1563{
1564 retz3_busy(p);
1565 fbcon_cfb8_revc(p, xx, yy);
1566}
1567
1568
1569static void retz3_clear_margins(struct vc_data* conp, struct display* p,
1570 int bottom_only)
1571{
1572 retz3_busy(p);
1573 fbcon_cfb8_clear_margins(conp, p, bottom_only);
1574}
1575
1576
1577static struct display_switch fbcon_retz3_8 = {
1578 .setup = fbcon_cfb8_setup,
1579 .bmove = retz3_8_bmove,
1580 .clear = retz3_8_clear,
1581 .putc = retz3_putc,
1582 .putcs = retz3_putcs,
1583 .revc = retz3_revc,
1584 .clear_margins = retz3_clear_margins,
1585 .fontwidthmask = FONTWIDTH(8)
1586};
1587#endif
Linux 6.x block layer and io_uring tree(s)