1 /*
2 * macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
3 * don't know how to set.
4 *
5 * (c) 1999 David Huggins-Daines <dhd@debian.org>
6 *
7 * Primarily based on vesafb.c, by Gerd Knorr
8 * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
9 *
10 * Also uses information and code from:
11 *
12 * The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
13 * Mellinger, Mikael Forselius, Michael Schmitz, and others.
14 *
15 * valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
16 * Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
17 *
18 * The VideoToolbox "Bugs" web page at
19 * http://rajsky.psych.nyu.edu/Tips/VideoBugs.html
20 *
21 * This code is free software. You may copy, modify, and distribute
22 * it subject to the terms and conditions of the GNU General Public
23 * License, version 2, or any later version, at your convenience.
24 */
25
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/errno.h>
29 #include <linux/string.h>
30 #include <linux/mm.h>
31 #include <linux/delay.h>
32 #include <linux/nubus.h>
33 #include <linux/init.h>
34 #include <linux/fb.h>
35
36 #include <asm/setup.h>
37 #include <asm/bootinfo.h>
38 #include <asm/macintosh.h>
39 #include <asm/io.h>
40
41 /* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
42 #define DAC_BASE 0x50f24000
43
44 /* Some addresses for the DAFB */
45 #define DAFB_BASE 0xf9800200
46
47 /* Address for the built-in Civic framebuffer in Quadra AVs */
48 #define CIVIC_BASE 0x50f30800
49
50 /* GSC (Gray Scale Controller) base address */
51 #define GSC_BASE 0x50F20000
52
53 /* CSC (Color Screen Controller) base address */
54 #define CSC_BASE 0x50F20000
55
56 static int (*macfb_setpalette)(unsigned int regno, unsigned int red,
57 unsigned int green, unsigned int blue,
58 struct fb_info *info);
59
60 static struct {
61 unsigned char addr;
62 unsigned char lut;
63 } __iomem *v8_brazil_cmap_regs;
64
65 static struct {
66 unsigned char addr;
67 char pad1[3]; /* word aligned */
68 unsigned char lut;
69 char pad2[3]; /* word aligned */
70 unsigned char cntl; /* a guess as to purpose */
71 } __iomem *rbv_cmap_regs;
72
73 static struct {
74 unsigned long reset;
75 unsigned long pad1[3];
76 unsigned char pad2[3];
77 unsigned char lut;
78 } __iomem *dafb_cmap_regs;
79
80 static struct {
81 unsigned char addr; /* OFFSET: 0x00 */
82 unsigned char pad1[15];
83 unsigned char lut; /* OFFSET: 0x10 */
84 unsigned char pad2[15];
85 unsigned char status; /* OFFSET: 0x20 */
86 unsigned char pad3[7];
87 unsigned long vbl_addr; /* OFFSET: 0x28 */
88 unsigned int status2; /* OFFSET: 0x2C */
89 } __iomem *civic_cmap_regs;
90
91 static struct {
92 char pad1[0x40];
93 unsigned char clut_waddr; /* 0x40 */
94 char pad2;
95 unsigned char clut_data; /* 0x42 */
96 char pad3[0x3];
97 unsigned char clut_raddr; /* 0x46 */
98 } __iomem *csc_cmap_regs;
99
100 /* The registers in these structs are in NuBus slot space */
101 struct mdc_cmap_regs {
102 char pad1[0x200200];
103 unsigned char addr;
104 char pad2[6];
105 unsigned char lut;
106 };
107
108 struct toby_cmap_regs {
109 char pad1[0x90018];
110 unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
111 char pad2[3];
112 unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
113 };
114
115 struct jet_cmap_regs {
116 char pad1[0xe0e000];
117 unsigned char addr;
118 unsigned char lut;
119 };
120
121 #define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */
122
123 static struct fb_var_screeninfo macfb_defined = {
124 .bits_per_pixel = 8,
125 .activate = FB_ACTIVATE_NOW,
126 .width = -1,
127 .height = -1,
128 .right_margin = 32,
129 .upper_margin = 16,
130 .lower_margin = 4,
131 .vsync_len = 4,
132 .vmode = FB_VMODE_NONINTERLACED,
133 };
134
135 static struct fb_fix_screeninfo macfb_fix = {
136 .type = FB_TYPE_PACKED_PIXELS,
137 .accel = FB_ACCEL_NONE,
138 };
139
140 static void *slot_addr;
141 static struct fb_info fb_info;
142 static u32 pseudo_palette[16];
143 static int inverse;
144 static int vidtest;
145
146 /*
147 * Unlike the Valkyrie, the DAFB cannot set individual colormap
148 * registers. Therefore, we do what the MacOS driver does (no
149 * kidding!) and simply set them one by one until we hit the one we
150 * want.
151 */
dafb_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)152 static int dafb_setpalette(unsigned int regno, unsigned int red,
153 unsigned int green, unsigned int blue,
154 struct fb_info *info)
155 {
156 static int lastreg = -1;
157 unsigned long flags;
158
159 local_irq_save(flags);
160
161 /*
162 * fbdev will set an entire colourmap, but X won't. Hopefully
163 * this should accommodate both of them
164 */
165 if (regno != lastreg + 1) {
166 int i;
167
168 /* Stab in the dark trying to reset the CLUT pointer */
169 nubus_writel(0, &dafb_cmap_regs->reset);
170 nop();
171
172 /* Loop until we get to the register we want */
173 for (i = 0; i < regno; i++) {
174 nubus_writeb(info->cmap.red[i] >> 8,
175 &dafb_cmap_regs->lut);
176 nop();
177 nubus_writeb(info->cmap.green[i] >> 8,
178 &dafb_cmap_regs->lut);
179 nop();
180 nubus_writeb(info->cmap.blue[i] >> 8,
181 &dafb_cmap_regs->lut);
182 nop();
183 }
184 }
185
186 nubus_writeb(red, &dafb_cmap_regs->lut);
187 nop();
188 nubus_writeb(green, &dafb_cmap_regs->lut);
189 nop();
190 nubus_writeb(blue, &dafb_cmap_regs->lut);
191
192 local_irq_restore(flags);
193 lastreg = regno;
194 return 0;
195 }
196
197 /* V8 and Brazil seem to use the same DAC. Sonora does as well. */
v8_brazil_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)198 static int v8_brazil_setpalette(unsigned int regno, unsigned int red,
199 unsigned int green, unsigned int blue,
200 struct fb_info *info)
201 {
202 unsigned int bpp = info->var.bits_per_pixel;
203 unsigned long flags;
204
205 if (bpp > 8)
206 return 1; /* failsafe */
207
208 local_irq_save(flags);
209
210 /* On these chips, the CLUT register numbers are spread out
211 * across the register space. Thus:
212 * In 8bpp, all regnos are valid.
213 * In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
214 * In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff
215 */
216 regno = (regno << (8 - bpp)) | (0xFF >> bpp);
217 nubus_writeb(regno, &v8_brazil_cmap_regs->addr);
218 nop();
219
220 /* send one color channel at a time */
221 nubus_writeb(red, &v8_brazil_cmap_regs->lut);
222 nop();
223 nubus_writeb(green, &v8_brazil_cmap_regs->lut);
224 nop();
225 nubus_writeb(blue, &v8_brazil_cmap_regs->lut);
226
227 local_irq_restore(flags);
228 return 0;
229 }
230
231 /* RAM-Based Video */
rbv_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)232 static int rbv_setpalette(unsigned int regno, unsigned int red,
233 unsigned int green, unsigned int blue,
234 struct fb_info *info)
235 {
236 unsigned long flags;
237
238 if (info->var.bits_per_pixel > 8)
239 return 1; /* failsafe */
240
241 local_irq_save(flags);
242
243 /* From the VideoToolbox driver. Seems to be saying that
244 * regno #254 and #255 are the important ones for 1-bit color,
245 * regno #252-255 are the important ones for 2-bit color, etc.
246 */
247 regno += 256 - (1 << info->var.bits_per_pixel);
248
249 /* reset clut? (VideoToolbox sez "not necessary") */
250 nubus_writeb(0xFF, &rbv_cmap_regs->cntl);
251 nop();
252
253 /* tell clut which address to use. */
254 nubus_writeb(regno, &rbv_cmap_regs->addr);
255 nop();
256
257 /* send one color channel at a time. */
258 nubus_writeb(red, &rbv_cmap_regs->lut);
259 nop();
260 nubus_writeb(green, &rbv_cmap_regs->lut);
261 nop();
262 nubus_writeb(blue, &rbv_cmap_regs->lut);
263
264 local_irq_restore(flags);
265 return 0;
266 }
267
268 /* Macintosh Display Card (8*24) */
mdc_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)269 static int mdc_setpalette(unsigned int regno, unsigned int red,
270 unsigned int green, unsigned int blue,
271 struct fb_info *info)
272 {
273 struct mdc_cmap_regs *cmap_regs = slot_addr;
274 unsigned long flags;
275
276 local_irq_save(flags);
277
278 /* the nop's are there to order writes. */
279 nubus_writeb(regno, &cmap_regs->addr);
280 nop();
281 nubus_writeb(red, &cmap_regs->lut);
282 nop();
283 nubus_writeb(green, &cmap_regs->lut);
284 nop();
285 nubus_writeb(blue, &cmap_regs->lut);
286
287 local_irq_restore(flags);
288 return 0;
289 }
290
291 /* Toby frame buffer */
toby_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)292 static int toby_setpalette(unsigned int regno, unsigned int red,
293 unsigned int green, unsigned int blue,
294 struct fb_info *info)
295 {
296 struct toby_cmap_regs *cmap_regs = slot_addr;
297 unsigned int bpp = info->var.bits_per_pixel;
298 unsigned long flags;
299
300 red = ~red;
301 green = ~green;
302 blue = ~blue;
303 regno = (regno << (8 - bpp)) | (0xFF >> bpp);
304
305 local_irq_save(flags);
306
307 nubus_writeb(regno, &cmap_regs->addr);
308 nop();
309 nubus_writeb(red, &cmap_regs->lut);
310 nop();
311 nubus_writeb(green, &cmap_regs->lut);
312 nop();
313 nubus_writeb(blue, &cmap_regs->lut);
314
315 local_irq_restore(flags);
316 return 0;
317 }
318
319 /* Jet frame buffer */
jet_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)320 static int jet_setpalette(unsigned int regno, unsigned int red,
321 unsigned int green, unsigned int blue,
322 struct fb_info *info)
323 {
324 struct jet_cmap_regs *cmap_regs = slot_addr;
325 unsigned long flags;
326
327 local_irq_save(flags);
328
329 nubus_writeb(regno, &cmap_regs->addr);
330 nop();
331 nubus_writeb(red, &cmap_regs->lut);
332 nop();
333 nubus_writeb(green, &cmap_regs->lut);
334 nop();
335 nubus_writeb(blue, &cmap_regs->lut);
336
337 local_irq_restore(flags);
338 return 0;
339 }
340
341 /*
342 * Civic framebuffer -- Quadra AV built-in video. A chip
343 * called Sebastian holds the actual color palettes, and
344 * apparently, there are two different banks of 512K RAM
345 * which can act as separate framebuffers for doing video
346 * input and viewing the screen at the same time! The 840AV
347 * Can add another 1MB RAM to give the two framebuffers
348 * 1MB RAM apiece.
349 */
civic_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)350 static int civic_setpalette(unsigned int regno, unsigned int red,
351 unsigned int green, unsigned int blue,
352 struct fb_info *info)
353 {
354 unsigned long flags;
355 int clut_status;
356
357 if (info->var.bits_per_pixel > 8)
358 return 1; /* failsafe */
359
360 local_irq_save(flags);
361
362 /* Set the register address */
363 nubus_writeb(regno, &civic_cmap_regs->addr);
364 nop();
365
366 /*
367 * Grab a status word and do some checking;
368 * Then finally write the clut!
369 */
370 clut_status = nubus_readb(&civic_cmap_regs->status2);
371
372 if ((clut_status & 0x0008) == 0)
373 {
374 #if 0
375 if ((clut_status & 0x000D) != 0)
376 {
377 nubus_writeb(0x00, &civic_cmap_regs->lut);
378 nop();
379 nubus_writeb(0x00, &civic_cmap_regs->lut);
380 nop();
381 }
382 #endif
383
384 nubus_writeb(red, &civic_cmap_regs->lut);
385 nop();
386 nubus_writeb(green, &civic_cmap_regs->lut);
387 nop();
388 nubus_writeb(blue, &civic_cmap_regs->lut);
389 nop();
390 nubus_writeb(0x00, &civic_cmap_regs->lut);
391 }
392 else
393 {
394 unsigned char junk;
395
396 junk = nubus_readb(&civic_cmap_regs->lut);
397 nop();
398 junk = nubus_readb(&civic_cmap_regs->lut);
399 nop();
400 junk = nubus_readb(&civic_cmap_regs->lut);
401 nop();
402 junk = nubus_readb(&civic_cmap_regs->lut);
403 nop();
404
405 if ((clut_status & 0x000D) != 0)
406 {
407 nubus_writeb(0x00, &civic_cmap_regs->lut);
408 nop();
409 nubus_writeb(0x00, &civic_cmap_regs->lut);
410 nop();
411 }
412
413 nubus_writeb(red, &civic_cmap_regs->lut);
414 nop();
415 nubus_writeb(green, &civic_cmap_regs->lut);
416 nop();
417 nubus_writeb(blue, &civic_cmap_regs->lut);
418 nop();
419 nubus_writeb(junk, &civic_cmap_regs->lut);
420 }
421
422 local_irq_restore(flags);
423 return 0;
424 }
425
426 /*
427 * The CSC is the framebuffer on the PowerBook 190 series
428 * (and the 5300 too, but that's a PowerMac). This function
429 * brought to you in part by the ECSC driver for MkLinux.
430 */
csc_setpalette(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,struct fb_info * info)431 static int csc_setpalette(unsigned int regno, unsigned int red,
432 unsigned int green, unsigned int blue,
433 struct fb_info *info)
434 {
435 unsigned long flags;
436
437 local_irq_save(flags);
438
439 udelay(1); /* mklinux on PB 5300 waits for 260 ns */
440 nubus_writeb(regno, &csc_cmap_regs->clut_waddr);
441 nubus_writeb(red, &csc_cmap_regs->clut_data);
442 nubus_writeb(green, &csc_cmap_regs->clut_data);
443 nubus_writeb(blue, &csc_cmap_regs->clut_data);
444
445 local_irq_restore(flags);
446 return 0;
447 }
448
macfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * fb_info)449 static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green,
450 unsigned blue, unsigned transp,
451 struct fb_info *fb_info)
452 {
453 /*
454 * Set a single color register. The values supplied are
455 * already rounded down to the hardware's capabilities
456 * (according to the entries in the `var' structure).
457 * Return non-zero for invalid regno.
458 */
459
460 if (regno >= fb_info->cmap.len)
461 return 1;
462
463 if (fb_info->var.bits_per_pixel <= 8) {
464 switch (fb_info->var.bits_per_pixel) {
465 case 1:
466 /* We shouldn't get here */
467 break;
468 case 2:
469 case 4:
470 case 8:
471 if (macfb_setpalette)
472 macfb_setpalette(regno, red >> 8, green >> 8,
473 blue >> 8, fb_info);
474 else
475 return 1;
476 break;
477 }
478 } else if (regno < 16) {
479 switch (fb_info->var.bits_per_pixel) {
480 case 16:
481 if (fb_info->var.red.offset == 10) {
482 /* 1:5:5:5 */
483 ((u32*) (fb_info->pseudo_palette))[regno] =
484 ((red & 0xf800) >> 1) |
485 ((green & 0xf800) >> 6) |
486 ((blue & 0xf800) >> 11) |
487 ((transp != 0) << 15);
488 } else {
489 /* 0:5:6:5 */
490 ((u32*) (fb_info->pseudo_palette))[regno] =
491 ((red & 0xf800) >> 0) |
492 ((green & 0xfc00) >> 5) |
493 ((blue & 0xf800) >> 11);
494 }
495 break;
496 /*
497 * 24-bit colour almost doesn't exist on 68k Macs --
498 * http://support.apple.com/kb/TA28634 (Old Article: 10992)
499 */
500 case 24:
501 case 32:
502 red >>= 8;
503 green >>= 8;
504 blue >>= 8;
505 ((u32 *)(fb_info->pseudo_palette))[regno] =
506 (red << fb_info->var.red.offset) |
507 (green << fb_info->var.green.offset) |
508 (blue << fb_info->var.blue.offset);
509 break;
510 }
511 }
512
513 return 0;
514 }
515
516 static struct fb_ops macfb_ops = {
517 .owner = THIS_MODULE,
518 .fb_setcolreg = macfb_setcolreg,
519 .fb_fillrect = cfb_fillrect,
520 .fb_copyarea = cfb_copyarea,
521 .fb_imageblit = cfb_imageblit,
522 };
523
macfb_setup(char * options)524 static void __init macfb_setup(char *options)
525 {
526 char *this_opt;
527
528 if (!options || !*options)
529 return;
530
531 while ((this_opt = strsep(&options, ",")) != NULL) {
532 if (!*this_opt)
533 continue;
534
535 if (!strcmp(this_opt, "inverse"))
536 inverse = 1;
537 else
538 if (!strcmp(this_opt, "vidtest"))
539 vidtest = 1; /* enable experimental CLUT code */
540 }
541 }
542
iounmap_macfb(void)543 static void __init iounmap_macfb(void)
544 {
545 if (dafb_cmap_regs)
546 iounmap(dafb_cmap_regs);
547 if (v8_brazil_cmap_regs)
548 iounmap(v8_brazil_cmap_regs);
549 if (rbv_cmap_regs)
550 iounmap(rbv_cmap_regs);
551 if (civic_cmap_regs)
552 iounmap(civic_cmap_regs);
553 if (csc_cmap_regs)
554 iounmap(csc_cmap_regs);
555 }
556
macfb_init(void)557 static int __init macfb_init(void)
558 {
559 int video_cmap_len, video_is_nubus = 0;
560 struct nubus_dev* ndev = NULL;
561 char *option = NULL;
562 int err;
563
564 if (fb_get_options("macfb", &option))
565 return -ENODEV;
566 macfb_setup(option);
567
568 if (!MACH_IS_MAC)
569 return -ENODEV;
570
571 if (mac_bi_data.id == MAC_MODEL_Q630 ||
572 mac_bi_data.id == MAC_MODEL_P588)
573 return -ENODEV; /* See valkyriefb.c */
574
575 macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF;
576 macfb_defined.yres = mac_bi_data.dimensions >> 16;
577 macfb_defined.bits_per_pixel = mac_bi_data.videodepth;
578
579 macfb_fix.line_length = mac_bi_data.videorow;
580 macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres;
581 /* Note: physical address (since 2.1.127) */
582 macfb_fix.smem_start = mac_bi_data.videoaddr;
583
584 /*
585 * This is actually redundant with the initial mappings.
586 * However, there are some non-obvious aspects to the way
587 * those mappings are set up, so this is in fact the safest
588 * way to ensure that this driver will work on every possible Mac
589 */
590 fb_info.screen_base = ioremap(mac_bi_data.videoaddr,
591 macfb_fix.smem_len);
592 if (!fb_info.screen_base)
593 return -ENODEV;
594
595 pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n",
596 macfb_fix.smem_start, fb_info.screen_base,
597 macfb_fix.smem_len / 1024);
598 pr_info("macfb: mode is %dx%dx%d, linelength=%d\n",
599 macfb_defined.xres, macfb_defined.yres,
600 macfb_defined.bits_per_pixel, macfb_fix.line_length);
601
602 /* Fill in the available video resolution */
603 macfb_defined.xres_virtual = macfb_defined.xres;
604 macfb_defined.yres_virtual = macfb_defined.yres;
605 macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres);
606 macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres);
607
608 /* Some dummy values for timing to make fbset happy */
609 macfb_defined.pixclock = 10000000 / macfb_defined.xres *
610 1000 / macfb_defined.yres;
611 macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8;
612 macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8;
613
614 switch (macfb_defined.bits_per_pixel) {
615 case 1:
616 macfb_defined.red.length = macfb_defined.bits_per_pixel;
617 macfb_defined.green.length = macfb_defined.bits_per_pixel;
618 macfb_defined.blue.length = macfb_defined.bits_per_pixel;
619 video_cmap_len = 2;
620 macfb_fix.visual = FB_VISUAL_MONO01;
621 break;
622 case 2:
623 case 4:
624 case 8:
625 macfb_defined.red.length = macfb_defined.bits_per_pixel;
626 macfb_defined.green.length = macfb_defined.bits_per_pixel;
627 macfb_defined.blue.length = macfb_defined.bits_per_pixel;
628 video_cmap_len = 1 << macfb_defined.bits_per_pixel;
629 macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
630 break;
631 case 16:
632 macfb_defined.transp.offset = 15;
633 macfb_defined.transp.length = 1;
634 macfb_defined.red.offset = 10;
635 macfb_defined.red.length = 5;
636 macfb_defined.green.offset = 5;
637 macfb_defined.green.length = 5;
638 macfb_defined.blue.offset = 0;
639 macfb_defined.blue.length = 5;
640 video_cmap_len = 16;
641 /*
642 * Should actually be FB_VISUAL_DIRECTCOLOR, but this
643 * works too
644 */
645 macfb_fix.visual = FB_VISUAL_TRUECOLOR;
646 break;
647 case 24:
648 case 32:
649 macfb_defined.red.offset = 16;
650 macfb_defined.red.length = 8;
651 macfb_defined.green.offset = 8;
652 macfb_defined.green.length = 8;
653 macfb_defined.blue.offset = 0;
654 macfb_defined.blue.length = 8;
655 video_cmap_len = 16;
656 macfb_fix.visual = FB_VISUAL_TRUECOLOR;
657 break;
658 default:
659 pr_err("macfb: unknown or unsupported bit depth: %d\n",
660 macfb_defined.bits_per_pixel);
661 err = -EINVAL;
662 goto fail_unmap;
663 }
664
665 /*
666 * We take a wild guess that if the video physical address is
667 * in nubus slot space, that the nubus card is driving video.
668 * Penguin really ought to tell us whether we are using internal
669 * video or not.
670 * Hopefully we only find one of them. Otherwise our NuBus
671 * code is really broken :-)
672 */
673
674 while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY,
675 NUBUS_TYPE_VIDEO, ndev)))
676 {
677 unsigned long base = ndev->board->slot_addr;
678
679 if (mac_bi_data.videoaddr < base ||
680 mac_bi_data.videoaddr - base > 0xFFFFFF)
681 continue;
682
683 video_is_nubus = 1;
684 slot_addr = (unsigned char *)base;
685
686 switch(ndev->dr_hw) {
687 case NUBUS_DRHW_APPLE_MDC:
688 strcpy(macfb_fix.id, "Mac Disp. Card");
689 macfb_setpalette = mdc_setpalette;
690 macfb_defined.activate = FB_ACTIVATE_NOW;
691 break;
692 case NUBUS_DRHW_APPLE_TFB:
693 strcpy(macfb_fix.id, "Toby");
694 macfb_setpalette = toby_setpalette;
695 macfb_defined.activate = FB_ACTIVATE_NOW;
696 break;
697 case NUBUS_DRHW_APPLE_JET:
698 strcpy(macfb_fix.id, "Jet");
699 macfb_setpalette = jet_setpalette;
700 macfb_defined.activate = FB_ACTIVATE_NOW;
701 break;
702 default:
703 strcpy(macfb_fix.id, "Generic NuBus");
704 break;
705 }
706 }
707
708 /* If it's not a NuBus card, it must be internal video */
709 if (!video_is_nubus)
710 switch (mac_bi_data.id) {
711 /*
712 * DAFB Quadras
713 * Note: these first four have the v7 DAFB, which is
714 * known to be rather unlike the ones used in the
715 * other models
716 */
717 case MAC_MODEL_P475:
718 case MAC_MODEL_P475F:
719 case MAC_MODEL_P575:
720 case MAC_MODEL_Q605:
721
722 case MAC_MODEL_Q800:
723 case MAC_MODEL_Q650:
724 case MAC_MODEL_Q610:
725 case MAC_MODEL_C650:
726 case MAC_MODEL_C610:
727 case MAC_MODEL_Q700:
728 case MAC_MODEL_Q900:
729 case MAC_MODEL_Q950:
730 strcpy(macfb_fix.id, "DAFB");
731 macfb_setpalette = dafb_setpalette;
732 dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
733 macfb_defined.activate = FB_ACTIVATE_NOW;
734 break;
735
736 /*
737 * LC II uses the V8 framebuffer
738 */
739 case MAC_MODEL_LCII:
740 strcpy(macfb_fix.id, "V8");
741 macfb_setpalette = v8_brazil_setpalette;
742 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
743 macfb_defined.activate = FB_ACTIVATE_NOW;
744 break;
745
746 /*
747 * IIvi, IIvx use the "Brazil" framebuffer (which is
748 * very much like the V8, it seems, and probably uses
749 * the same DAC)
750 */
751 case MAC_MODEL_IIVI:
752 case MAC_MODEL_IIVX:
753 case MAC_MODEL_P600:
754 strcpy(macfb_fix.id, "Brazil");
755 macfb_setpalette = v8_brazil_setpalette;
756 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
757 macfb_defined.activate = FB_ACTIVATE_NOW;
758 break;
759
760 /*
761 * LC III (and friends) use the Sonora framebuffer
762 * Incidentally this is also used in the non-AV models
763 * of the x100 PowerMacs
764 * These do in fact seem to use the same DAC interface
765 * as the LC II.
766 */
767 case MAC_MODEL_LCIII:
768 case MAC_MODEL_P520:
769 case MAC_MODEL_P550:
770 case MAC_MODEL_P460:
771 strcpy(macfb_fix.id, "Sonora");
772 macfb_setpalette = v8_brazil_setpalette;
773 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
774 macfb_defined.activate = FB_ACTIVATE_NOW;
775 break;
776
777 /*
778 * IIci and IIsi use the infamous RBV chip
779 * (the IIsi is just a rebadged and crippled
780 * IIci in a different case, BTW)
781 */
782 case MAC_MODEL_IICI:
783 case MAC_MODEL_IISI:
784 strcpy(macfb_fix.id, "RBV");
785 macfb_setpalette = rbv_setpalette;
786 rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
787 macfb_defined.activate = FB_ACTIVATE_NOW;
788 break;
789
790 /*
791 * AVs use the Civic framebuffer
792 */
793 case MAC_MODEL_Q840:
794 case MAC_MODEL_C660:
795 strcpy(macfb_fix.id, "Civic");
796 macfb_setpalette = civic_setpalette;
797 civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
798 macfb_defined.activate = FB_ACTIVATE_NOW;
799 break;
800
801
802 /*
803 * Assorted weirdos
804 * We think this may be like the LC II
805 */
806 case MAC_MODEL_LC:
807 strcpy(macfb_fix.id, "LC");
808 if (vidtest) {
809 macfb_setpalette = v8_brazil_setpalette;
810 v8_brazil_cmap_regs =
811 ioremap(DAC_BASE, 0x1000);
812 macfb_defined.activate = FB_ACTIVATE_NOW;
813 }
814 break;
815
816 /*
817 * We think this may be like the LC II
818 */
819 case MAC_MODEL_CCL:
820 strcpy(macfb_fix.id, "Color Classic");
821 if (vidtest) {
822 macfb_setpalette = v8_brazil_setpalette;
823 v8_brazil_cmap_regs =
824 ioremap(DAC_BASE, 0x1000);
825 macfb_defined.activate = FB_ACTIVATE_NOW;
826 }
827 break;
828
829 /*
830 * And we *do* mean "weirdos"
831 */
832 case MAC_MODEL_TV:
833 strcpy(macfb_fix.id, "Mac TV");
834 break;
835
836 /*
837 * These don't have colour, so no need to worry
838 */
839 case MAC_MODEL_SE30:
840 case MAC_MODEL_CLII:
841 strcpy(macfb_fix.id, "Monochrome");
842 break;
843
844 /*
845 * Powerbooks are particularly difficult. Many of
846 * them have separate framebuffers for external and
847 * internal video, which is admittedly pretty cool,
848 * but will be a bit of a headache to support here.
849 * Also, many of them are grayscale, and we don't
850 * really support that.
851 */
852
853 /*
854 * Slot 0 ROM says TIM. No external video. B&W.
855 */
856 case MAC_MODEL_PB140:
857 case MAC_MODEL_PB145:
858 case MAC_MODEL_PB170:
859 strcpy(macfb_fix.id, "DDC");
860 break;
861
862 /*
863 * Internal is GSC, External (if present) is ViSC
864 */
865 case MAC_MODEL_PB150: /* no external video */
866 case MAC_MODEL_PB160:
867 case MAC_MODEL_PB165:
868 case MAC_MODEL_PB180:
869 case MAC_MODEL_PB210:
870 case MAC_MODEL_PB230:
871 strcpy(macfb_fix.id, "GSC");
872 break;
873
874 /*
875 * Internal is TIM, External is ViSC
876 */
877 case MAC_MODEL_PB165C:
878 case MAC_MODEL_PB180C:
879 strcpy(macfb_fix.id, "TIM");
880 break;
881
882 /*
883 * Internal is CSC, External is Keystone+Ariel.
884 */
885 case MAC_MODEL_PB190: /* external video is optional */
886 case MAC_MODEL_PB520:
887 case MAC_MODEL_PB250:
888 case MAC_MODEL_PB270C:
889 case MAC_MODEL_PB280:
890 case MAC_MODEL_PB280C:
891 strcpy(macfb_fix.id, "CSC");
892 macfb_setpalette = csc_setpalette;
893 csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
894 macfb_defined.activate = FB_ACTIVATE_NOW;
895 break;
896
897 default:
898 strcpy(macfb_fix.id, "Unknown");
899 break;
900 }
901
902 fb_info.fbops = &macfb_ops;
903 fb_info.var = macfb_defined;
904 fb_info.fix = macfb_fix;
905 fb_info.pseudo_palette = pseudo_palette;
906 fb_info.flags = FBINFO_DEFAULT;
907
908 err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
909 if (err)
910 goto fail_unmap;
911
912 err = register_framebuffer(&fb_info);
913 if (err)
914 goto fail_dealloc;
915
916 pr_info("fb%d: %s frame buffer device\n",
917 fb_info.node, fb_info.fix.id);
918
919 return 0;
920
921 fail_dealloc:
922 fb_dealloc_cmap(&fb_info.cmap);
923 fail_unmap:
924 iounmap(fb_info.screen_base);
925 iounmap_macfb();
926 return err;
927 }
928
929 module_init(macfb_init);
930 MODULE_LICENSE("GPL");
931