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