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1da177e4 LT |
1 | /* macfb.c: Generic framebuffer for Macs whose colourmaps/modes we |
2 | don't know how to set */ | |
3 | ||
4 | /* (c) 1999 David Huggins-Daines <dhd@debian.org> | |
5 | ||
6 | Primarily based on vesafb.c, by Gerd Knorr | |
7 | (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> | |
8 | ||
9 | Also uses information and code from: | |
10 | ||
11 | The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen | |
12 | Mellinger, Mikael Forselius, Michael Schmitz, and others. | |
13 | ||
14 | valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan | |
15 | Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven. | |
16 | ||
17 | This code is free software. You may copy, modify, and distribute | |
18 | it subject to the terms and conditions of the GNU General Public | |
19 | License, version 2, or any later version, at your convenience. */ | |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/sched.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/string.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/tty.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/nubus.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/fb.h> | |
33 | ||
34 | #include <asm/setup.h> | |
35 | #include <asm/bootinfo.h> | |
36 | #include <asm/uaccess.h> | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/macintosh.h> | |
40 | #include <asm/io.h> | |
41 | #include <asm/machw.h> | |
42 | ||
43 | /* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */ | |
44 | #define DAC_BASE 0x50f24000 | |
45 | ||
46 | /* Some addresses for the DAFB */ | |
47 | #define DAFB_BASE 0xf9800200 | |
48 | ||
49 | /* Address for the built-in Civic framebuffer in Quadra AVs */ | |
50 | #define CIVIC_BASE 0x50f30800 /* Only tested on 660AV! */ | |
51 | ||
52 | /* GSC (Gray Scale Controller) base address */ | |
53 | #define GSC_BASE 0x50F20000 | |
54 | ||
55 | /* CSC (Color Screen Controller) base address */ | |
56 | #define CSC_BASE 0x50F20000 | |
57 | ||
58 | static int (*macfb_setpalette) (unsigned int regno, unsigned int red, | |
59 | unsigned int green, unsigned int blue, | |
60 | struct fb_info *info) = NULL; | |
61 | static int valkyrie_setpalette (unsigned int regno, unsigned int red, | |
62 | unsigned int green, unsigned int blue, | |
63 | struct fb_info *info); | |
64 | static int dafb_setpalette (unsigned int regno, unsigned int red, | |
65 | unsigned int green, unsigned int blue, | |
66 | struct fb_info *fb_info); | |
67 | static int rbv_setpalette (unsigned int regno, unsigned int red, | |
68 | unsigned int green, unsigned int blue, | |
69 | struct fb_info *fb_info); | |
70 | static int mdc_setpalette (unsigned int regno, unsigned int red, | |
71 | unsigned int green, unsigned int blue, | |
72 | struct fb_info *fb_info); | |
73 | static int toby_setpalette (unsigned int regno, unsigned int red, | |
74 | unsigned int green, unsigned int blue, | |
75 | struct fb_info *fb_info); | |
76 | static int civic_setpalette (unsigned int regno, unsigned int red, | |
77 | unsigned int green, unsigned int blue, | |
78 | struct fb_info *fb_info); | |
79 | static int csc_setpalette (unsigned int regno, unsigned int red, | |
80 | unsigned int green, unsigned int blue, | |
81 | struct fb_info *fb_info); | |
82 | ||
83 | static volatile struct { | |
84 | unsigned char addr; | |
85 | /* Note: word-aligned */ | |
86 | char pad[3]; | |
87 | unsigned char lut; | |
88 | } *valkyrie_cmap_regs; | |
89 | ||
90 | static volatile struct { | |
91 | unsigned char addr; | |
92 | unsigned char lut; | |
93 | } *v8_brazil_cmap_regs; | |
94 | ||
95 | static volatile struct { | |
96 | unsigned char addr; | |
97 | char pad1[3]; /* word aligned */ | |
98 | unsigned char lut; | |
99 | char pad2[3]; /* word aligned */ | |
100 | unsigned char cntl; /* a guess as to purpose */ | |
101 | } *rbv_cmap_regs; | |
102 | ||
103 | static volatile struct { | |
104 | unsigned long reset; | |
105 | unsigned long pad1[3]; | |
106 | unsigned char pad2[3]; | |
107 | unsigned char lut; | |
108 | } *dafb_cmap_regs; | |
109 | ||
110 | static volatile struct { | |
111 | unsigned char addr; /* OFFSET: 0x00 */ | |
112 | unsigned char pad1[15]; | |
113 | unsigned char lut; /* OFFSET: 0x10 */ | |
114 | unsigned char pad2[15]; | |
115 | unsigned char status; /* OFFSET: 0x20 */ | |
116 | unsigned char pad3[7]; | |
117 | unsigned long vbl_addr; /* OFFSET: 0x28 */ | |
118 | unsigned int status2; /* OFFSET: 0x2C */ | |
119 | } *civic_cmap_regs; | |
120 | ||
121 | static volatile struct { | |
122 | char pad1[0x40]; | |
123 | unsigned char clut_waddr; /* 0x40 */ | |
124 | char pad2; | |
125 | unsigned char clut_data; /* 0x42 */ | |
126 | char pad3[0x3]; | |
127 | unsigned char clut_raddr; /* 0x46 */ | |
128 | } *csc_cmap_regs; | |
129 | ||
130 | /* We will leave these the way they are for the time being */ | |
131 | struct mdc_cmap_regs { | |
132 | char pad1[0x200200]; | |
133 | unsigned char addr; | |
134 | char pad2[6]; | |
135 | unsigned char lut; | |
136 | }; | |
137 | ||
138 | struct toby_cmap_regs { | |
139 | char pad1[0x90018]; | |
140 | unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */ | |
141 | char pad2[3]; | |
142 | unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */ | |
143 | }; | |
144 | ||
145 | struct jet_cmap_regs { | |
146 | char pad1[0xe0e000]; | |
147 | unsigned char addr; | |
148 | unsigned char lut; | |
149 | }; | |
150 | ||
151 | #define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */ | |
152 | ||
153 | /* mode */ | |
154 | static int video_slot = 0; | |
155 | ||
156 | static struct fb_var_screeninfo macfb_defined = { | |
157 | .bits_per_pixel = 8, | |
158 | .activate = FB_ACTIVATE_NOW, | |
159 | .width = -1, | |
160 | .height = -1, | |
161 | .right_margin = 32, | |
162 | .upper_margin = 16, | |
163 | .lower_margin = 4, | |
164 | .vsync_len = 4, | |
165 | .vmode = FB_VMODE_NONINTERLACED, | |
166 | }; | |
167 | ||
168 | static struct fb_fix_screeninfo macfb_fix = { | |
169 | .id = "Macintosh ", | |
170 | .type = FB_TYPE_PACKED_PIXELS, | |
171 | .accel = FB_ACCEL_NONE, | |
172 | }; | |
173 | ||
174 | static struct fb_info fb_info; | |
175 | static u32 pseudo_palette[17]; | |
176 | static int inverse = 0; | |
177 | static int vidtest = 0; | |
178 | ||
179 | static int valkyrie_setpalette (unsigned int regno, unsigned int red, | |
180 | unsigned int green, unsigned int blue, | |
181 | struct fb_info *info) | |
182 | { | |
183 | unsigned long flags; | |
184 | ||
185 | red >>= 8; | |
186 | green >>= 8; | |
187 | blue >>= 8; | |
188 | ||
189 | local_irq_save(flags); | |
190 | ||
191 | /* tell clut which address to fill */ | |
192 | nubus_writeb(regno, &valkyrie_cmap_regs->addr); | |
193 | nop(); | |
194 | ||
195 | /* send one color channel at a time */ | |
196 | nubus_writeb(red, &valkyrie_cmap_regs->lut); | |
197 | nop(); | |
198 | nubus_writeb(green, &valkyrie_cmap_regs->lut); | |
199 | nop(); | |
200 | nubus_writeb(blue, &valkyrie_cmap_regs->lut); | |
201 | ||
202 | local_irq_restore(flags); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | /* Unlike the Valkyrie, the DAFB cannot set individual colormap | |
207 | registers. Therefore, we do what the MacOS driver does (no | |
208 | kidding!) and simply set them one by one until we hit the one we | |
209 | want. */ | |
210 | static int dafb_setpalette (unsigned int regno, unsigned int red, | |
211 | unsigned int green, unsigned int blue, | |
212 | struct fb_info *info) | |
213 | { | |
214 | /* FIXME: really, really need to use ioremap() here, | |
215 | phys_to_virt() doesn't work anymore */ | |
216 | static int lastreg = -1; | |
217 | unsigned long flags; | |
218 | ||
219 | red >>= 8; | |
220 | green >>= 8; | |
221 | blue >>= 8; | |
222 | ||
223 | local_irq_save(flags); | |
224 | ||
225 | /* fbdev will set an entire colourmap, but X won't. Hopefully | |
226 | this should accommodate both of them */ | |
227 | if (regno != lastreg+1) { | |
228 | int i; | |
229 | ||
230 | /* Stab in the dark trying to reset the CLUT pointer */ | |
231 | nubus_writel(0, &dafb_cmap_regs->reset); | |
232 | nop(); | |
233 | ||
234 | /* Loop until we get to the register we want */ | |
235 | for (i = 0; i < regno; i++) { | |
236 | nubus_writeb(info->cmap.red[i] >> 8, &dafb_cmap_regs->lut); | |
237 | nop(); | |
238 | nubus_writeb(info->cmap.green[i] >> 8, &dafb_cmap_regs->lut); | |
239 | nop(); | |
240 | nubus_writeb(info->cmap.blue[i] >> 8, &dafb_cmap_regs->lut); | |
241 | nop(); | |
242 | } | |
243 | } | |
244 | ||
245 | nubus_writeb(red, &dafb_cmap_regs->lut); | |
246 | nop(); | |
247 | nubus_writeb(green, &dafb_cmap_regs->lut); | |
248 | nop(); | |
249 | nubus_writeb(blue, &dafb_cmap_regs->lut); | |
250 | ||
251 | local_irq_restore(flags); | |
252 | lastreg = regno; | |
253 | return 0; | |
254 | } | |
255 | ||
256 | /* V8 and Brazil seem to use the same DAC. Sonora does as well. */ | |
257 | static int v8_brazil_setpalette (unsigned int regno, unsigned int red, | |
258 | unsigned int green, unsigned int blue, | |
259 | struct fb_info *info) | |
260 | { | |
261 | unsigned int bpp = info->var.bits_per_pixel; | |
262 | unsigned char _red =red>>8; | |
263 | unsigned char _green=green>>8; | |
264 | unsigned char _blue =blue>>8; | |
265 | unsigned char _regno; | |
266 | unsigned long flags; | |
267 | ||
268 | if (bpp > 8) return 1; /* failsafe */ | |
269 | ||
270 | local_irq_save(flags); | |
271 | ||
272 | /* On these chips, the CLUT register numbers are spread out | |
273 | across the register space. Thus: | |
274 | ||
275 | In 8bpp, all regnos are valid. | |
276 | ||
277 | In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc | |
278 | ||
279 | In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff */ | |
280 | _regno = (regno << (8 - bpp)) | (0xFF >> bpp); | |
281 | nubus_writeb(_regno, &v8_brazil_cmap_regs->addr); nop(); | |
282 | ||
283 | /* send one color channel at a time */ | |
284 | nubus_writeb(_red, &v8_brazil_cmap_regs->lut); nop(); | |
285 | nubus_writeb(_green, &v8_brazil_cmap_regs->lut); nop(); | |
286 | nubus_writeb(_blue, &v8_brazil_cmap_regs->lut); | |
287 | ||
288 | local_irq_restore(flags); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int rbv_setpalette (unsigned int regno, unsigned int red, | |
293 | unsigned int green, unsigned int blue, | |
294 | struct fb_info *info) | |
295 | { | |
296 | /* use MSBs */ | |
297 | unsigned char _red =red>>8; | |
298 | unsigned char _green=green>>8; | |
299 | unsigned char _blue =blue>>8; | |
300 | unsigned char _regno; | |
301 | unsigned long flags; | |
302 | ||
303 | if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ | |
304 | ||
305 | local_irq_save(flags); | |
306 | ||
307 | /* From the VideoToolbox driver. Seems to be saying that | |
308 | * regno #254 and #255 are the important ones for 1-bit color, | |
309 | * regno #252-255 are the important ones for 2-bit color, etc. | |
310 | */ | |
311 | _regno = regno + (256-(1 << info->var.bits_per_pixel)); | |
312 | ||
313 | /* reset clut? (VideoToolbox sez "not necessary") */ | |
314 | nubus_writeb(0xFF, &rbv_cmap_regs->cntl); nop(); | |
315 | ||
316 | /* tell clut which address to use. */ | |
317 | nubus_writeb(_regno, &rbv_cmap_regs->addr); nop(); | |
318 | ||
319 | /* send one color channel at a time. */ | |
320 | nubus_writeb(_red, &rbv_cmap_regs->lut); nop(); | |
321 | nubus_writeb(_green, &rbv_cmap_regs->lut); nop(); | |
322 | nubus_writeb(_blue, &rbv_cmap_regs->lut); | |
323 | ||
324 | local_irq_restore(flags); /* done. */ | |
325 | return 0; | |
326 | } | |
327 | ||
328 | /* Macintosh Display Card (8x24) */ | |
329 | static int mdc_setpalette(unsigned int regno, unsigned int red, | |
330 | unsigned int green, unsigned int blue, | |
331 | struct fb_info *info) | |
332 | { | |
333 | volatile struct mdc_cmap_regs *cmap_regs = | |
334 | nubus_slot_addr(video_slot); | |
335 | /* use MSBs */ | |
336 | unsigned char _red =red>>8; | |
337 | unsigned char _green=green>>8; | |
338 | unsigned char _blue =blue>>8; | |
339 | unsigned char _regno=regno; | |
340 | unsigned long flags; | |
341 | ||
342 | local_irq_save(flags); | |
343 | ||
344 | /* the nop's are there to order writes. */ | |
345 | nubus_writeb(_regno, &cmap_regs->addr); nop(); | |
346 | nubus_writeb(_red, &cmap_regs->lut); nop(); | |
347 | nubus_writeb(_green, &cmap_regs->lut); nop(); | |
348 | nubus_writeb(_blue, &cmap_regs->lut); | |
349 | ||
350 | local_irq_restore(flags); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | /* Toby frame buffer */ | |
355 | static int toby_setpalette(unsigned int regno, unsigned int red, | |
356 | unsigned int green, unsigned int blue, | |
357 | struct fb_info *info) | |
358 | { | |
359 | volatile struct toby_cmap_regs *cmap_regs = | |
360 | nubus_slot_addr(video_slot); | |
361 | unsigned int bpp = info->var.bits_per_pixel; | |
362 | /* use MSBs */ | |
363 | unsigned char _red =~(red>>8); | |
364 | unsigned char _green=~(green>>8); | |
365 | unsigned char _blue =~(blue>>8); | |
366 | unsigned char _regno = (regno << (8 - bpp)) | (0xFF >> bpp); | |
367 | unsigned long flags; | |
368 | ||
369 | local_irq_save(flags); | |
370 | ||
371 | nubus_writeb(_regno, &cmap_regs->addr); nop(); | |
372 | nubus_writeb(_red, &cmap_regs->lut); nop(); | |
373 | nubus_writeb(_green, &cmap_regs->lut); nop(); | |
374 | nubus_writeb(_blue, &cmap_regs->lut); | |
375 | ||
376 | local_irq_restore(flags); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* Jet frame buffer */ | |
381 | static int jet_setpalette(unsigned int regno, unsigned int red, | |
382 | unsigned int green, unsigned int blue, | |
383 | struct fb_info *info) | |
384 | { | |
385 | volatile struct jet_cmap_regs *cmap_regs = | |
386 | nubus_slot_addr(video_slot); | |
387 | /* use MSBs */ | |
388 | unsigned char _red = (red>>8); | |
389 | unsigned char _green = (green>>8); | |
390 | unsigned char _blue = (blue>>8); | |
391 | unsigned long flags; | |
392 | ||
393 | local_irq_save(flags); | |
394 | ||
395 | nubus_writeb(regno, &cmap_regs->addr); nop(); | |
396 | nubus_writeb(_red, &cmap_regs->lut); nop(); | |
397 | nubus_writeb(_green, &cmap_regs->lut); nop(); | |
398 | nubus_writeb(_blue, &cmap_regs->lut); | |
399 | ||
400 | local_irq_restore(flags); | |
401 | return 0; | |
402 | } | |
403 | ||
404 | /* | |
405 | * Civic framebuffer -- Quadra AV built-in video. A chip | |
406 | * called Sebastian holds the actual color palettes, and | |
407 | * apparently, there are two different banks of 512K RAM | |
408 | * which can act as separate framebuffers for doing video | |
409 | * input and viewing the screen at the same time! The 840AV | |
410 | * Can add another 1MB RAM to give the two framebuffers | |
411 | * 1MB RAM apiece. | |
412 | * | |
413 | * FIXME: this doesn't seem to work anymore. | |
414 | */ | |
415 | static int civic_setpalette (unsigned int regno, unsigned int red, | |
416 | unsigned int green, unsigned int blue, | |
417 | struct fb_info *info) | |
418 | { | |
419 | static int lastreg = -1; | |
420 | unsigned long flags; | |
421 | int clut_status; | |
422 | ||
423 | if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ | |
424 | ||
425 | red >>= 8; | |
426 | green >>= 8; | |
427 | blue >>= 8; | |
428 | ||
429 | local_irq_save(flags); | |
430 | ||
431 | /* | |
432 | * Set the register address | |
433 | */ | |
434 | nubus_writeb(regno, &civic_cmap_regs->addr); nop(); | |
435 | ||
436 | /* | |
437 | * Wait for VBL interrupt here; | |
438 | * They're usually not enabled from Penguin, so we won't check | |
439 | */ | |
440 | #if 0 | |
441 | { | |
442 | #define CIVIC_VBL_OFFSET 0x120 | |
443 | volatile unsigned long *vbl = nubus_readl(civic_cmap_regs->vbl_addr + CIVIC_VBL_OFFSET); | |
444 | /* do interrupt setup stuff here? */ | |
445 | *vbl = 0L; nop(); /* clear */ | |
446 | *vbl = 1L; nop(); /* set */ | |
447 | while (*vbl != 0L) /* wait for next vbl */ | |
448 | { | |
449 | usleep(10); /* needed? */ | |
450 | } | |
451 | /* do interrupt shutdown stuff here? */ | |
452 | } | |
453 | #endif | |
454 | ||
455 | /* | |
456 | * Grab a status word and do some checking; | |
457 | * Then finally write the clut! | |
458 | */ | |
459 | clut_status = nubus_readb(&civic_cmap_regs->status2); | |
460 | ||
461 | if ((clut_status & 0x0008) == 0) | |
462 | { | |
463 | #if 0 | |
464 | if ((clut_status & 0x000D) != 0) | |
465 | { | |
466 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); | |
467 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); | |
468 | } | |
469 | #endif | |
470 | ||
471 | nubus_writeb( red, &civic_cmap_regs->lut); nop(); | |
472 | nubus_writeb(green, &civic_cmap_regs->lut); nop(); | |
473 | nubus_writeb( blue, &civic_cmap_regs->lut); nop(); | |
474 | nubus_writeb( 0x00, &civic_cmap_regs->lut); nop(); | |
475 | } | |
476 | else | |
477 | { | |
478 | unsigned char junk; | |
479 | ||
480 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); | |
481 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); | |
482 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); | |
483 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); | |
484 | ||
485 | if ((clut_status & 0x000D) != 0) | |
486 | { | |
487 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); | |
488 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); | |
489 | } | |
490 | ||
491 | nubus_writeb( red, &civic_cmap_regs->lut); nop(); | |
492 | nubus_writeb(green, &civic_cmap_regs->lut); nop(); | |
493 | nubus_writeb( blue, &civic_cmap_regs->lut); nop(); | |
494 | nubus_writeb( junk, &civic_cmap_regs->lut); nop(); | |
495 | } | |
496 | ||
497 | local_irq_restore(flags); | |
498 | lastreg = regno; | |
499 | return 0; | |
500 | } | |
501 | ||
502 | /* | |
503 | * The CSC is the framebuffer on the PowerBook 190 series | |
504 | * (and the 5300 too, but that's a PowerMac). This function | |
505 | * brought to you in part by the ECSC driver for MkLinux. | |
506 | */ | |
507 | ||
508 | static int csc_setpalette (unsigned int regno, unsigned int red, | |
509 | unsigned int green, unsigned int blue, | |
510 | struct fb_info *info) | |
511 | { | |
512 | mdelay(1); | |
513 | csc_cmap_regs->clut_waddr = regno; | |
514 | csc_cmap_regs->clut_data = red; | |
515 | csc_cmap_regs->clut_data = green; | |
516 | csc_cmap_regs->clut_data = blue; | |
517 | return 0; | |
518 | } | |
519 | ||
520 | static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
521 | unsigned blue, unsigned transp, | |
522 | struct fb_info *fb_info) | |
523 | { | |
524 | /* | |
525 | * Set a single color register. The values supplied are | |
526 | * already rounded down to the hardware's capabilities | |
527 | * (according to the entries in the `var' structure). Return | |
528 | * != 0 for invalid regno. | |
529 | */ | |
530 | ||
531 | if (regno >= fb_info->cmap.len) | |
532 | return 1; | |
533 | ||
534 | switch (fb_info->var.bits_per_pixel) { | |
535 | case 1: | |
536 | /* We shouldn't get here */ | |
537 | break; | |
538 | case 2: | |
539 | case 4: | |
540 | case 8: | |
541 | if (macfb_setpalette) | |
542 | macfb_setpalette(regno, red, green, blue, fb_info); | |
543 | else | |
544 | return 1; | |
545 | break; | |
546 | case 16: | |
547 | if (fb_info->var.red.offset == 10) { | |
548 | /* 1:5:5:5 */ | |
549 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
550 | ((red & 0xf800) >> 1) | | |
551 | ((green & 0xf800) >> 6) | | |
552 | ((blue & 0xf800) >> 11) | | |
553 | ((transp != 0) << 15); | |
554 | } else { | |
555 | /* 0:5:6:5 */ | |
556 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
557 | ((red & 0xf800) ) | | |
558 | ((green & 0xfc00) >> 5) | | |
559 | ((blue & 0xf800) >> 11); | |
560 | } | |
561 | break; | |
562 | /* I'm pretty sure that one or the other of these | |
563 | doesn't exist on 68k Macs */ | |
564 | case 24: | |
565 | red >>= 8; | |
566 | green >>= 8; | |
567 | blue >>= 8; | |
568 | ((u32 *)(fb_info->pseudo_palette))[regno] = | |
569 | (red << fb_info->var.red.offset) | | |
570 | (green << fb_info->var.green.offset) | | |
571 | (blue << fb_info->var.blue.offset); | |
572 | break; | |
573 | case 32: | |
574 | red >>= 8; | |
575 | green >>= 8; | |
576 | blue >>= 8; | |
577 | ((u32 *)(fb_info->pseudo_palette))[regno] = | |
578 | (red << fb_info->var.red.offset) | | |
579 | (green << fb_info->var.green.offset) | | |
580 | (blue << fb_info->var.blue.offset); | |
581 | break; | |
582 | } | |
583 | return 0; | |
584 | } | |
585 | ||
586 | static struct fb_ops macfb_ops = { | |
587 | .owner = THIS_MODULE, | |
588 | .fb_setcolreg = macfb_setcolreg, | |
589 | .fb_fillrect = cfb_fillrect, | |
590 | .fb_copyarea = cfb_copyarea, | |
591 | .fb_imageblit = cfb_imageblit, | |
1da177e4 LT |
592 | }; |
593 | ||
594 | void __init macfb_setup(char *options) | |
595 | { | |
596 | char *this_opt; | |
597 | ||
598 | if (!options || !*options) | |
599 | return; | |
600 | ||
601 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
602 | if (!*this_opt) continue; | |
603 | ||
604 | if (! strcmp(this_opt, "inverse")) | |
605 | inverse=1; | |
606 | /* This means "turn on experimental CLUT code" */ | |
607 | else if (!strcmp(this_opt, "vidtest")) | |
608 | vidtest=1; | |
609 | } | |
610 | } | |
611 | ||
ed1705af | 612 | static int __init macfb_init(void) |
1da177e4 LT |
613 | { |
614 | int video_cmap_len, video_is_nubus = 0; | |
615 | struct nubus_dev* ndev = NULL; | |
616 | char *option = NULL; | |
ed1705af | 617 | int err; |
1da177e4 LT |
618 | |
619 | if (fb_get_options("macfb", &option)) | |
620 | return -ENODEV; | |
621 | macfb_setup(option); | |
622 | ||
623 | if (!MACH_IS_MAC) | |
ed1705af | 624 | return -ENODEV; |
1da177e4 LT |
625 | |
626 | /* There can only be one internal video controller anyway so | |
627 | we're not too worried about this */ | |
628 | macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF; | |
629 | macfb_defined.yres = mac_bi_data.dimensions >> 16; | |
630 | macfb_defined.bits_per_pixel = mac_bi_data.videodepth; | |
631 | macfb_fix.line_length = mac_bi_data.videorow; | |
632 | macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres; | |
633 | /* Note: physical address (since 2.1.127) */ | |
634 | macfb_fix.smem_start = mac_bi_data.videoaddr; | |
635 | /* This is actually redundant with the initial mappings. | |
636 | However, there are some non-obvious aspects to the way | |
637 | those mappings are set up, so this is in fact the safest | |
638 | way to ensure that this driver will work on every possible | |
639 | Mac */ | |
640 | fb_info.screen_base = ioremap(mac_bi_data.videoaddr, macfb_fix.smem_len); | |
641 | ||
642 | printk("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n", | |
643 | macfb_fix.smem_start, fb_info.screen_base, macfb_fix.smem_len/1024); | |
644 | printk("macfb: mode is %dx%dx%d, linelength=%d\n", | |
645 | macfb_defined.xres, macfb_defined.yres, macfb_defined.bits_per_pixel, macfb_fix.line_length); | |
646 | ||
647 | /* | |
648 | * Fill in the available video resolution | |
649 | */ | |
650 | ||
651 | macfb_defined.xres_virtual = macfb_defined.xres; | |
652 | macfb_defined.yres_virtual = macfb_defined.yres; | |
653 | macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres); | |
654 | macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres); | |
655 | ||
656 | printk("macfb: scrolling: redraw\n"); | |
657 | macfb_defined.yres_virtual = macfb_defined.yres; | |
658 | ||
659 | /* some dummy values for timing to make fbset happy */ | |
660 | macfb_defined.pixclock = 10000000 / macfb_defined.xres * 1000 / macfb_defined.yres; | |
661 | macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8; | |
662 | macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8; | |
663 | ||
664 | switch (macfb_defined.bits_per_pixel) { | |
665 | case 1: | |
666 | /* XXX: I think this will catch any program that tries | |
667 | to do FBIO_PUTCMAP when the visual is monochrome */ | |
668 | macfb_defined.red.length = macfb_defined.bits_per_pixel; | |
669 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
670 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
671 | video_cmap_len = 0; | |
672 | macfb_fix.visual = FB_VISUAL_MONO01; | |
673 | break; | |
674 | case 2: | |
675 | case 4: | |
676 | case 8: | |
677 | macfb_defined.red.length = macfb_defined.bits_per_pixel; | |
678 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
679 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
680 | video_cmap_len = 1 << macfb_defined.bits_per_pixel; | |
681 | macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
682 | break; | |
683 | case 16: | |
684 | macfb_defined.transp.offset = 15; | |
685 | macfb_defined.transp.length = 1; | |
686 | macfb_defined.red.offset = 10; | |
687 | macfb_defined.red.length = 5; | |
688 | macfb_defined.green.offset = 5; | |
689 | macfb_defined.green.length = 5; | |
690 | macfb_defined.blue.offset = 0; | |
691 | macfb_defined.blue.length = 5; | |
692 | printk("macfb: directcolor: " | |
693 | "size=1:5:5:5, shift=15:10:5:0\n"); | |
694 | video_cmap_len = 16; | |
695 | /* Should actually be FB_VISUAL_DIRECTCOLOR, but this | |
696 | works too */ | |
697 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; | |
698 | break; | |
699 | case 24: | |
700 | case 32: | |
701 | /* XXX: have to test these... can any 68k Macs | |
702 | actually do this on internal video? */ | |
703 | macfb_defined.red.offset = 16; | |
704 | macfb_defined.red.length = 8; | |
705 | macfb_defined.green.offset = 8; | |
706 | macfb_defined.green.length = 8; | |
707 | macfb_defined.blue.offset = 0; | |
708 | macfb_defined.blue.length = 8; | |
709 | printk("macfb: truecolor: " | |
710 | "size=0:8:8:8, shift=0:16:8:0\n"); | |
711 | video_cmap_len = 16; | |
712 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; | |
713 | default: | |
714 | video_cmap_len = 0; | |
715 | macfb_fix.visual = FB_VISUAL_MONO01; | |
716 | printk("macfb: unknown or unsupported bit depth: %d\n", macfb_defined.bits_per_pixel); | |
717 | break; | |
718 | } | |
719 | ||
720 | /* Hardware dependent stuff */ | |
721 | /* We take a wild guess that if the video physical address is | |
722 | * in nubus slot space, that the nubus card is driving video. | |
723 | * Penguin really ought to tell us whether we are using internal | |
724 | * video or not. | |
725 | */ | |
726 | /* Hopefully we only find one of them. Otherwise our NuBus | |
727 | code is really broken :-) */ | |
728 | ||
729 | while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, NUBUS_TYPE_VIDEO, ndev)) | |
730 | != NULL) | |
731 | { | |
732 | if (!(mac_bi_data.videoaddr >= ndev->board->slot_addr | |
733 | && (mac_bi_data.videoaddr < | |
734 | (unsigned long)nubus_slot_addr(ndev->board->slot+1)))) | |
735 | continue; | |
736 | video_is_nubus = 1; | |
737 | /* We should probably just use the slot address... */ | |
738 | video_slot = ndev->board->slot; | |
739 | ||
740 | switch(ndev->dr_hw) { | |
741 | case NUBUS_DRHW_APPLE_MDC: | |
742 | strcat( macfb_fix.id, "Display Card" ); | |
743 | macfb_setpalette = mdc_setpalette; | |
744 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
745 | break; | |
746 | case NUBUS_DRHW_APPLE_TFB: | |
747 | strcat( macfb_fix.id, "Toby" ); | |
748 | macfb_setpalette = toby_setpalette; | |
749 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
750 | break; | |
751 | case NUBUS_DRHW_APPLE_JET: | |
752 | strcat( macfb_fix.id, "Jet"); | |
753 | macfb_setpalette = jet_setpalette; | |
754 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
755 | break; | |
756 | default: | |
757 | strcat( macfb_fix.id, "Generic NuBus" ); | |
758 | break; | |
759 | } | |
760 | } | |
761 | ||
762 | /* If it's not a NuBus card, it must be internal video */ | |
763 | /* FIXME: this function is getting way too big. (this driver | |
764 | is too...) */ | |
765 | if (!video_is_nubus) | |
766 | switch( mac_bi_data.id ) | |
767 | { | |
768 | /* These don't have onboard video. Eventually, we may | |
769 | be able to write separate framebuffer drivers for | |
770 | them (tobyfb.c, hiresfb.c, etc, etc) */ | |
771 | case MAC_MODEL_II: | |
772 | case MAC_MODEL_IIX: | |
773 | case MAC_MODEL_IICX: | |
774 | case MAC_MODEL_IIFX: | |
775 | strcat( macfb_fix.id, "Generic NuBus" ); | |
776 | break; | |
777 | ||
778 | /* Valkyrie Quadras */ | |
779 | case MAC_MODEL_Q630: | |
780 | /* I'm not sure about this one */ | |
781 | case MAC_MODEL_P588: | |
782 | strcat( macfb_fix.id, "Valkyrie built-in" ); | |
783 | macfb_setpalette = valkyrie_setpalette; | |
784 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
785 | valkyrie_cmap_regs = ioremap(DAC_BASE, 0x1000); | |
786 | break; | |
787 | ||
788 | /* DAFB Quadras */ | |
789 | /* Note: these first four have the v7 DAFB, which is | |
790 | known to be rather unlike the ones used in the | |
791 | other models */ | |
792 | case MAC_MODEL_P475: | |
793 | case MAC_MODEL_P475F: | |
794 | case MAC_MODEL_P575: | |
795 | case MAC_MODEL_Q605: | |
796 | ||
797 | case MAC_MODEL_Q800: | |
798 | case MAC_MODEL_Q650: | |
799 | case MAC_MODEL_Q610: | |
800 | case MAC_MODEL_C650: | |
801 | case MAC_MODEL_C610: | |
802 | case MAC_MODEL_Q700: | |
803 | case MAC_MODEL_Q900: | |
804 | case MAC_MODEL_Q950: | |
805 | strcat( macfb_fix.id, "DAFB built-in" ); | |
806 | macfb_setpalette = dafb_setpalette; | |
807 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
808 | dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); | |
809 | break; | |
810 | ||
811 | /* LC II uses the V8 framebuffer */ | |
812 | case MAC_MODEL_LCII: | |
813 | strcat( macfb_fix.id, "V8 built-in" ); | |
814 | macfb_setpalette = v8_brazil_setpalette; | |
815 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
816 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); | |
817 | break; | |
818 | ||
819 | /* IIvi, IIvx use the "Brazil" framebuffer (which is | |
820 | very much like the V8, it seems, and probably uses | |
821 | the same DAC) */ | |
822 | case MAC_MODEL_IIVI: | |
823 | case MAC_MODEL_IIVX: | |
824 | case MAC_MODEL_P600: | |
825 | strcat( macfb_fix.id, "Brazil built-in" ); | |
826 | macfb_setpalette = v8_brazil_setpalette; | |
827 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
828 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); | |
829 | break; | |
830 | ||
831 | /* LC III (and friends) use the Sonora framebuffer */ | |
832 | /* Incidentally this is also used in the non-AV models | |
833 | of the x100 PowerMacs */ | |
834 | /* These do in fact seem to use the same DAC interface | |
835 | as the LC II. */ | |
836 | case MAC_MODEL_LCIII: | |
837 | case MAC_MODEL_P520: | |
838 | case MAC_MODEL_P550: | |
839 | case MAC_MODEL_P460: | |
840 | macfb_setpalette = v8_brazil_setpalette; | |
841 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
842 | strcat( macfb_fix.id, "Sonora built-in" ); | |
843 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); | |
844 | break; | |
845 | ||
846 | /* IIci and IIsi use the infamous RBV chip | |
847 | (the IIsi is just a rebadged and crippled | |
848 | IIci in a different case, BTW) */ | |
849 | case MAC_MODEL_IICI: | |
850 | case MAC_MODEL_IISI: | |
851 | macfb_setpalette = rbv_setpalette; | |
852 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
853 | strcat( macfb_fix.id, "RBV built-in" ); | |
854 | rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); | |
855 | break; | |
856 | ||
857 | /* AVs use the Civic framebuffer */ | |
858 | case MAC_MODEL_Q840: | |
859 | case MAC_MODEL_C660: | |
860 | macfb_setpalette = civic_setpalette; | |
861 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
862 | strcat( macfb_fix.id, "Civic built-in" ); | |
863 | civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000); | |
864 | break; | |
865 | ||
866 | ||
867 | /* Write a setpalette function for your machine, then | |
868 | you can add something similar here. These are | |
869 | grouped by classes of video chipsets. Some of this | |
870 | information is from the VideoToolbox "Bugs" web | |
871 | page at | |
872 | http://rajsky.psych.nyu.edu/Tips/VideoBugs.html */ | |
873 | ||
874 | /* Assorted weirdos */ | |
875 | /* We think this may be like the LC II */ | |
876 | case MAC_MODEL_LC: | |
877 | if (vidtest) { | |
878 | macfb_setpalette = v8_brazil_setpalette; | |
879 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
880 | v8_brazil_cmap_regs = | |
881 | ioremap(DAC_BASE, 0x1000); | |
882 | } | |
883 | strcat( macfb_fix.id, "LC built-in" ); | |
884 | break; | |
885 | /* We think this may be like the LC II */ | |
886 | case MAC_MODEL_CCL: | |
887 | if (vidtest) { | |
888 | macfb_setpalette = v8_brazil_setpalette; | |
889 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
890 | v8_brazil_cmap_regs = | |
891 | ioremap(DAC_BASE, 0x1000); | |
892 | } | |
893 | strcat( macfb_fix.id, "Color Classic built-in" ); | |
894 | break; | |
895 | ||
896 | /* And we *do* mean "weirdos" */ | |
897 | case MAC_MODEL_TV: | |
898 | strcat( macfb_fix.id, "Mac TV built-in" ); | |
899 | break; | |
900 | ||
901 | /* These don't have colour, so no need to worry */ | |
902 | case MAC_MODEL_SE30: | |
903 | case MAC_MODEL_CLII: | |
904 | strcat( macfb_fix.id, "Monochrome built-in" ); | |
905 | break; | |
906 | ||
907 | /* Powerbooks are particularly difficult. Many of | |
908 | them have separate framebuffers for external and | |
909 | internal video, which is admittedly pretty cool, | |
910 | but will be a bit of a headache to support here. | |
911 | Also, many of them are grayscale, and we don't | |
912 | really support that. */ | |
913 | ||
914 | case MAC_MODEL_PB140: | |
915 | case MAC_MODEL_PB145: | |
916 | case MAC_MODEL_PB170: | |
917 | strcat( macfb_fix.id, "DDC built-in" ); | |
918 | break; | |
919 | ||
920 | /* Internal is GSC, External (if present) is ViSC */ | |
921 | case MAC_MODEL_PB150: /* no external video */ | |
922 | case MAC_MODEL_PB160: | |
923 | case MAC_MODEL_PB165: | |
924 | case MAC_MODEL_PB180: | |
925 | case MAC_MODEL_PB210: | |
926 | case MAC_MODEL_PB230: | |
927 | strcat( macfb_fix.id, "GSC built-in" ); | |
928 | break; | |
929 | ||
930 | /* Internal is TIM, External is ViSC */ | |
931 | case MAC_MODEL_PB165C: | |
932 | case MAC_MODEL_PB180C: | |
933 | strcat( macfb_fix.id, "TIM built-in" ); | |
934 | break; | |
935 | ||
936 | /* Internal is CSC, External is Keystone+Ariel. */ | |
937 | case MAC_MODEL_PB190: /* external video is optional */ | |
938 | case MAC_MODEL_PB520: | |
939 | case MAC_MODEL_PB250: | |
940 | case MAC_MODEL_PB270C: | |
941 | case MAC_MODEL_PB280: | |
942 | case MAC_MODEL_PB280C: | |
943 | macfb_setpalette = csc_setpalette; | |
944 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
945 | strcat( macfb_fix.id, "CSC built-in" ); | |
946 | csc_cmap_regs = ioremap(CSC_BASE, 0x1000); | |
947 | break; | |
948 | ||
949 | default: | |
950 | strcat( macfb_fix.id, "Unknown/Unsupported built-in" ); | |
951 | break; | |
952 | } | |
953 | ||
954 | fb_info.fbops = &macfb_ops; | |
955 | fb_info.var = macfb_defined; | |
956 | fb_info.fix = macfb_fix; | |
957 | fb_info.pseudo_palette = pseudo_palette; | |
958 | fb_info.flags = FBINFO_DEFAULT; | |
959 | ||
960 | fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); | |
961 | ||
ed1705af AV |
962 | err = register_framebuffer(&fb_info); |
963 | if (!err) | |
964 | printk("fb%d: %s frame buffer device\n", | |
965 | fb_info.node, fb_info.fix.id); | |
966 | return err; | |
1da177e4 LT |
967 | } |
968 | ||
969 | module_init(macfb_init); | |
970 | MODULE_LICENSE("GPL"); |