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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/errno.h> |
24 | #include <linux/string.h> |
25 | #include <linux/mm.h> |
26 | #include <linux/slab.h> |
27 | #include <linux/delay.h> |
28 | #include <linux/nubus.h> |
29 | #include <linux/init.h> |
30 | #include <linux/fb.h> |
31 | |
32 | #include <asm/setup.h> |
33 | #include <asm/bootinfo.h> |
34 | #include <asm/uaccess.h> |
35 | #include <asm/pgtable.h> |
36 | #include <asm/irq.h> |
37 | #include <asm/macintosh.h> |
38 | #include <asm/io.h> |
39 | |
40 | /* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */ |
41 | #define DAC_BASE 0x50f24000 |
42 | |
43 | /* Some addresses for the DAFB */ |
44 | #define DAFB_BASE 0xf9800200 |
45 | |
46 | /* Address for the built-in Civic framebuffer in Quadra AVs */ |
47 | #define CIVIC_BASE 0x50f30800 /* Only tested on 660AV! */ |
48 | |
49 | /* GSC (Gray Scale Controller) base address */ |
50 | #define GSC_BASE 0x50F20000 |
51 | |
52 | /* CSC (Color Screen Controller) base address */ |
53 | #define CSC_BASE 0x50F20000 |
54 | |
55 | static int (*macfb_setpalette) (unsigned int regno, unsigned int red, |
56 | unsigned int green, unsigned int blue, |
57 | struct fb_info *info) = NULL; |
58 | static int valkyrie_setpalette (unsigned int regno, unsigned int red, |
59 | unsigned int green, unsigned int blue, |
60 | struct fb_info *info); |
61 | static int dafb_setpalette (unsigned int regno, unsigned int red, |
62 | unsigned int green, unsigned int blue, |
63 | struct fb_info *fb_info); |
64 | static int rbv_setpalette (unsigned int regno, unsigned int red, |
65 | unsigned int green, unsigned int blue, |
66 | struct fb_info *fb_info); |
67 | static int mdc_setpalette (unsigned int regno, unsigned int red, |
68 | unsigned int green, unsigned int blue, |
69 | struct fb_info *fb_info); |
70 | static int toby_setpalette (unsigned int regno, unsigned int red, |
71 | unsigned int green, unsigned int blue, |
72 | struct fb_info *fb_info); |
73 | static int civic_setpalette (unsigned int regno, unsigned int red, |
74 | unsigned int green, unsigned int blue, |
75 | struct fb_info *fb_info); |
76 | static int csc_setpalette (unsigned int regno, unsigned int red, |
77 | unsigned int green, unsigned int blue, |
78 | struct fb_info *fb_info); |
79 | |
80 | static struct { |
81 | unsigned char addr; |
82 | /* Note: word-aligned */ |
83 | char pad[3]; |
84 | unsigned char lut; |
85 | } __iomem *valkyrie_cmap_regs; |
86 | |
87 | static struct { |
88 | unsigned char addr; |
89 | unsigned char lut; |
90 | } __iomem *v8_brazil_cmap_regs; |
91 | |
92 | static struct { |
93 | unsigned char addr; |
94 | char pad1[3]; /* word aligned */ |
95 | unsigned char lut; |
96 | char pad2[3]; /* word aligned */ |
97 | unsigned char cntl; /* a guess as to purpose */ |
98 | } __iomem *rbv_cmap_regs; |
99 | |
100 | static struct { |
101 | unsigned long reset; |
102 | unsigned long pad1[3]; |
103 | unsigned char pad2[3]; |
104 | unsigned char lut; |
105 | } __iomem *dafb_cmap_regs; |
106 | |
107 | static struct { |
108 | unsigned char addr; /* OFFSET: 0x00 */ |
109 | unsigned char pad1[15]; |
110 | unsigned char lut; /* OFFSET: 0x10 */ |
111 | unsigned char pad2[15]; |
112 | unsigned char status; /* OFFSET: 0x20 */ |
113 | unsigned char pad3[7]; |
114 | unsigned long vbl_addr; /* OFFSET: 0x28 */ |
115 | unsigned int status2; /* OFFSET: 0x2C */ |
116 | } __iomem *civic_cmap_regs; |
117 | |
118 | static struct { |
119 | char pad1[0x40]; |
120 | unsigned char clut_waddr; /* 0x40 */ |
121 | char pad2; |
122 | unsigned char clut_data; /* 0x42 */ |
123 | char pad3[0x3]; |
124 | unsigned char clut_raddr; /* 0x46 */ |
125 | } __iomem *csc_cmap_regs; |
126 | |
127 | /* We will leave these the way they are for the time being */ |
128 | struct mdc_cmap_regs { |
129 | char pad1[0x200200]; |
130 | unsigned char addr; |
131 | char pad2[6]; |
132 | unsigned char lut; |
133 | }; |
134 | |
135 | struct toby_cmap_regs { |
136 | char pad1[0x90018]; |
137 | unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */ |
138 | char pad2[3]; |
139 | unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */ |
140 | }; |
141 | |
142 | struct jet_cmap_regs { |
143 | char pad1[0xe0e000]; |
144 | unsigned char addr; |
145 | unsigned char lut; |
146 | }; |
147 | |
148 | #define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */ |
149 | |
150 | /* mode */ |
151 | static int video_slot = 0; |
152 | |
153 | static struct fb_var_screeninfo macfb_defined = { |
154 | .bits_per_pixel = 8, |
155 | .activate = FB_ACTIVATE_NOW, |
156 | .width = -1, |
157 | .height = -1, |
158 | .right_margin = 32, |
159 | .upper_margin = 16, |
160 | .lower_margin = 4, |
161 | .vsync_len = 4, |
162 | .vmode = FB_VMODE_NONINTERLACED, |
163 | }; |
164 | |
165 | static struct fb_fix_screeninfo macfb_fix = { |
166 | .type = FB_TYPE_PACKED_PIXELS, |
167 | .accel = FB_ACCEL_NONE, |
168 | }; |
169 | |
170 | static struct fb_info fb_info; |
171 | static u32 pseudo_palette[16]; |
172 | static int inverse = 0; |
173 | static int vidtest = 0; |
174 | |
175 | static int valkyrie_setpalette (unsigned int regno, unsigned int red, |
176 | unsigned int green, unsigned int blue, |
177 | struct fb_info *info) |
178 | { |
179 | unsigned long flags; |
180 | |
181 | red >>= 8; |
182 | green >>= 8; |
183 | blue >>= 8; |
184 | |
185 | local_irq_save(flags); |
186 | |
187 | /* tell clut which address to fill */ |
188 | nubus_writeb(regno, &valkyrie_cmap_regs->addr); |
189 | nop(); |
190 | |
191 | /* send one color channel at a time */ |
192 | nubus_writeb(red, &valkyrie_cmap_regs->lut); |
193 | nop(); |
194 | nubus_writeb(green, &valkyrie_cmap_regs->lut); |
195 | nop(); |
196 | nubus_writeb(blue, &valkyrie_cmap_regs->lut); |
197 | |
198 | local_irq_restore(flags); |
199 | return 0; |
200 | } |
201 | |
202 | /* Unlike the Valkyrie, the DAFB cannot set individual colormap |
203 | registers. Therefore, we do what the MacOS driver does (no |
204 | kidding!) and simply set them one by one until we hit the one we |
205 | want. */ |
206 | static int dafb_setpalette (unsigned int regno, unsigned int red, |
207 | unsigned int green, unsigned int blue, |
208 | struct fb_info *info) |
209 | { |
210 | /* FIXME: really, really need to use ioremap() here, |
211 | phys_to_virt() doesn't work anymore */ |
212 | static int lastreg = -1; |
213 | unsigned long flags; |
214 | |
215 | red >>= 8; |
216 | green >>= 8; |
217 | blue >>= 8; |
218 | |
219 | local_irq_save(flags); |
220 | |
221 | /* fbdev will set an entire colourmap, but X won't. Hopefully |
222 | this should accommodate both of them */ |
223 | if (regno != lastreg+1) { |
224 | int i; |
225 | |
226 | /* Stab in the dark trying to reset the CLUT pointer */ |
227 | nubus_writel(0, &dafb_cmap_regs->reset); |
228 | nop(); |
229 | |
230 | /* Loop until we get to the register we want */ |
231 | for (i = 0; i < regno; i++) { |
232 | nubus_writeb(info->cmap.red[i] >> 8, &dafb_cmap_regs->lut); |
233 | nop(); |
234 | nubus_writeb(info->cmap.green[i] >> 8, &dafb_cmap_regs->lut); |
235 | nop(); |
236 | nubus_writeb(info->cmap.blue[i] >> 8, &dafb_cmap_regs->lut); |
237 | nop(); |
238 | } |
239 | } |
240 | |
241 | nubus_writeb(red, &dafb_cmap_regs->lut); |
242 | nop(); |
243 | nubus_writeb(green, &dafb_cmap_regs->lut); |
244 | nop(); |
245 | nubus_writeb(blue, &dafb_cmap_regs->lut); |
246 | |
247 | local_irq_restore(flags); |
248 | lastreg = regno; |
249 | return 0; |
250 | } |
251 | |
252 | /* V8 and Brazil seem to use the same DAC. Sonora does as well. */ |
253 | static int v8_brazil_setpalette (unsigned int regno, unsigned int red, |
254 | unsigned int green, unsigned int blue, |
255 | struct fb_info *info) |
256 | { |
257 | unsigned int bpp = info->var.bits_per_pixel; |
258 | unsigned char _red =red>>8; |
259 | unsigned char _green=green>>8; |
260 | unsigned char _blue =blue>>8; |
261 | unsigned char _regno; |
262 | unsigned long flags; |
263 | |
264 | if (bpp > 8) return 1; /* failsafe */ |
265 | |
266 | local_irq_save(flags); |
267 | |
268 | /* On these chips, the CLUT register numbers are spread out |
269 | across the register space. Thus: |
270 | |
271 | In 8bpp, all regnos are valid. |
272 | |
273 | In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc |
274 | |
275 | In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff */ |
276 | _regno = (regno << (8 - bpp)) | (0xFF >> bpp); |
277 | nubus_writeb(_regno, &v8_brazil_cmap_regs->addr); nop(); |
278 | |
279 | /* send one color channel at a time */ |
280 | nubus_writeb(_red, &v8_brazil_cmap_regs->lut); nop(); |
281 | nubus_writeb(_green, &v8_brazil_cmap_regs->lut); nop(); |
282 | nubus_writeb(_blue, &v8_brazil_cmap_regs->lut); |
283 | |
284 | local_irq_restore(flags); |
285 | return 0; |
286 | } |
287 | |
288 | static int rbv_setpalette (unsigned int regno, unsigned int red, |
289 | unsigned int green, unsigned int blue, |
290 | struct fb_info *info) |
291 | { |
292 | /* use MSBs */ |
293 | unsigned char _red =red>>8; |
294 | unsigned char _green=green>>8; |
295 | unsigned char _blue =blue>>8; |
296 | unsigned char _regno; |
297 | unsigned long flags; |
298 | |
299 | if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ |
300 | |
301 | local_irq_save(flags); |
302 | |
303 | /* From the VideoToolbox driver. Seems to be saying that |
304 | * regno #254 and #255 are the important ones for 1-bit color, |
305 | * regno #252-255 are the important ones for 2-bit color, etc. |
306 | */ |
307 | _regno = regno + (256-(1 << info->var.bits_per_pixel)); |
308 | |
309 | /* reset clut? (VideoToolbox sez "not necessary") */ |
310 | nubus_writeb(0xFF, &rbv_cmap_regs->cntl); nop(); |
311 | |
312 | /* tell clut which address to use. */ |
313 | nubus_writeb(_regno, &rbv_cmap_regs->addr); nop(); |
314 | |
315 | /* send one color channel at a time. */ |
316 | nubus_writeb(_red, &rbv_cmap_regs->lut); nop(); |
317 | nubus_writeb(_green, &rbv_cmap_regs->lut); nop(); |
318 | nubus_writeb(_blue, &rbv_cmap_regs->lut); |
319 | |
320 | local_irq_restore(flags); /* done. */ |
321 | return 0; |
322 | } |
323 | |
324 | /* Macintosh Display Card (8x24) */ |
325 | static int mdc_setpalette(unsigned int regno, unsigned int red, |
326 | unsigned int green, unsigned int blue, |
327 | struct fb_info *info) |
328 | { |
329 | volatile struct mdc_cmap_regs *cmap_regs = |
330 | nubus_slot_addr(video_slot); |
331 | /* use MSBs */ |
332 | unsigned char _red =red>>8; |
333 | unsigned char _green=green>>8; |
334 | unsigned char _blue =blue>>8; |
335 | unsigned char _regno=regno; |
336 | unsigned long flags; |
337 | |
338 | local_irq_save(flags); |
339 | |
340 | /* the nop's are there to order writes. */ |
341 | nubus_writeb(_regno, &cmap_regs->addr); nop(); |
342 | nubus_writeb(_red, &cmap_regs->lut); nop(); |
343 | nubus_writeb(_green, &cmap_regs->lut); nop(); |
344 | nubus_writeb(_blue, &cmap_regs->lut); |
345 | |
346 | local_irq_restore(flags); |
347 | return 0; |
348 | } |
349 | |
350 | /* Toby frame buffer */ |
351 | static int toby_setpalette(unsigned int regno, unsigned int red, |
352 | unsigned int green, unsigned int blue, |
353 | struct fb_info *info) |
354 | { |
355 | volatile struct toby_cmap_regs *cmap_regs = |
356 | nubus_slot_addr(video_slot); |
357 | unsigned int bpp = info->var.bits_per_pixel; |
358 | /* use MSBs */ |
359 | unsigned char _red =~(red>>8); |
360 | unsigned char _green=~(green>>8); |
361 | unsigned char _blue =~(blue>>8); |
362 | unsigned char _regno = (regno << (8 - bpp)) | (0xFF >> bpp); |
363 | unsigned long flags; |
364 | |
365 | local_irq_save(flags); |
366 | |
367 | nubus_writeb(_regno, &cmap_regs->addr); nop(); |
368 | nubus_writeb(_red, &cmap_regs->lut); nop(); |
369 | nubus_writeb(_green, &cmap_regs->lut); nop(); |
370 | nubus_writeb(_blue, &cmap_regs->lut); |
371 | |
372 | local_irq_restore(flags); |
373 | return 0; |
374 | } |
375 | |
376 | /* Jet frame buffer */ |
377 | static int jet_setpalette(unsigned int regno, unsigned int red, |
378 | unsigned int green, unsigned int blue, |
379 | struct fb_info *info) |
380 | { |
381 | volatile struct jet_cmap_regs *cmap_regs = |
382 | nubus_slot_addr(video_slot); |
383 | /* use MSBs */ |
384 | unsigned char _red = (red>>8); |
385 | unsigned char _green = (green>>8); |
386 | unsigned char _blue = (blue>>8); |
387 | unsigned long flags; |
388 | |
389 | local_irq_save(flags); |
390 | |
391 | nubus_writeb(regno, &cmap_regs->addr); nop(); |
392 | nubus_writeb(_red, &cmap_regs->lut); nop(); |
393 | nubus_writeb(_green, &cmap_regs->lut); nop(); |
394 | nubus_writeb(_blue, &cmap_regs->lut); |
395 | |
396 | local_irq_restore(flags); |
397 | return 0; |
398 | } |
399 | |
400 | /* |
401 | * Civic framebuffer -- Quadra AV built-in video. A chip |
402 | * called Sebastian holds the actual color palettes, and |
403 | * apparently, there are two different banks of 512K RAM |
404 | * which can act as separate framebuffers for doing video |
405 | * input and viewing the screen at the same time! The 840AV |
406 | * Can add another 1MB RAM to give the two framebuffers |
407 | * 1MB RAM apiece. |
408 | * |
409 | * FIXME: this doesn't seem to work anymore. |
410 | */ |
411 | static int civic_setpalette (unsigned int regno, unsigned int red, |
412 | unsigned int green, unsigned int blue, |
413 | struct fb_info *info) |
414 | { |
415 | static int lastreg = -1; |
416 | unsigned long flags; |
417 | int clut_status; |
418 | |
419 | if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ |
420 | |
421 | red >>= 8; |
422 | green >>= 8; |
423 | blue >>= 8; |
424 | |
425 | local_irq_save(flags); |
426 | |
427 | /* |
428 | * Set the register address |
429 | */ |
430 | nubus_writeb(regno, &civic_cmap_regs->addr); nop(); |
431 | |
432 | /* |
433 | * Wait for VBL interrupt here; |
434 | * They're usually not enabled from Penguin, so we won't check |
435 | */ |
436 | #if 0 |
437 | { |
438 | #define CIVIC_VBL_OFFSET 0x120 |
439 | volatile unsigned long *vbl = nubus_readl(civic_cmap_regs->vbl_addr + CIVIC_VBL_OFFSET); |
440 | /* do interrupt setup stuff here? */ |
441 | *vbl = 0L; nop(); /* clear */ |
442 | *vbl = 1L; nop(); /* set */ |
443 | while (*vbl != 0L) /* wait for next vbl */ |
444 | { |
445 | usleep(10); /* needed? */ |
446 | } |
447 | /* do interrupt shutdown stuff here? */ |
448 | } |
449 | #endif |
450 | |
451 | /* |
452 | * Grab a status word and do some checking; |
453 | * Then finally write the clut! |
454 | */ |
455 | clut_status = nubus_readb(&civic_cmap_regs->status2); |
456 | |
457 | if ((clut_status & 0x0008) == 0) |
458 | { |
459 | #if 0 |
460 | if ((clut_status & 0x000D) != 0) |
461 | { |
462 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); |
463 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); |
464 | } |
465 | #endif |
466 | |
467 | nubus_writeb( red, &civic_cmap_regs->lut); nop(); |
468 | nubus_writeb(green, &civic_cmap_regs->lut); nop(); |
469 | nubus_writeb( blue, &civic_cmap_regs->lut); nop(); |
470 | nubus_writeb( 0x00, &civic_cmap_regs->lut); nop(); |
471 | } |
472 | else |
473 | { |
474 | unsigned char junk; |
475 | |
476 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); |
477 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); |
478 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); |
479 | junk = nubus_readb(&civic_cmap_regs->lut); nop(); |
480 | |
481 | if ((clut_status & 0x000D) != 0) |
482 | { |
483 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); |
484 | nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); |
485 | } |
486 | |
487 | nubus_writeb( red, &civic_cmap_regs->lut); nop(); |
488 | nubus_writeb(green, &civic_cmap_regs->lut); nop(); |
489 | nubus_writeb( blue, &civic_cmap_regs->lut); nop(); |
490 | nubus_writeb( junk, &civic_cmap_regs->lut); nop(); |
491 | } |
492 | |
493 | local_irq_restore(flags); |
494 | lastreg = regno; |
495 | return 0; |
496 | } |
497 | |
498 | /* |
499 | * The CSC is the framebuffer on the PowerBook 190 series |
500 | * (and the 5300 too, but that's a PowerMac). This function |
501 | * brought to you in part by the ECSC driver for MkLinux. |
502 | */ |
503 | |
504 | static int csc_setpalette (unsigned int regno, unsigned int red, |
505 | unsigned int green, unsigned int blue, |
506 | struct fb_info *info) |
507 | { |
508 | mdelay(1); |
509 | nubus_writeb(regno, &csc_cmap_regs->clut_waddr); |
510 | nubus_writeb(red, &csc_cmap_regs->clut_data); |
511 | nubus_writeb(green, &csc_cmap_regs->clut_data); |
512 | nubus_writeb(blue, &csc_cmap_regs->clut_data); |
513 | return 0; |
514 | } |
515 | |
516 | static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
517 | unsigned blue, unsigned transp, |
518 | struct fb_info *fb_info) |
519 | { |
520 | /* |
521 | * Set a single color register. The values supplied are |
522 | * already rounded down to the hardware's capabilities |
523 | * (according to the entries in the `var' structure). Return |
524 | * != 0 for invalid regno. |
525 | */ |
526 | |
527 | if (regno >= fb_info->cmap.len) |
528 | return 1; |
529 | |
530 | if (fb_info->var.bits_per_pixel <= 8) { |
531 | switch (fb_info->var.bits_per_pixel) { |
532 | case 1: |
533 | /* We shouldn't get here */ |
534 | break; |
535 | case 2: |
536 | case 4: |
537 | case 8: |
538 | if (macfb_setpalette) |
539 | macfb_setpalette(regno, red, green, blue, |
540 | fb_info); |
541 | else |
542 | return 1; |
543 | break; |
544 | } |
545 | } else if (regno < 16) { |
546 | switch (fb_info->var.bits_per_pixel) { |
547 | case 16: |
548 | if (fb_info->var.red.offset == 10) { |
549 | /* 1:5:5:5 */ |
550 | ((u32*) (fb_info->pseudo_palette))[regno] = |
551 | ((red & 0xf800) >> 1) | |
552 | ((green & 0xf800) >> 6) | |
553 | ((blue & 0xf800) >> 11) | |
554 | ((transp != 0) << 15); |
555 | } else { |
556 | /* 0:5:6:5 */ |
557 | ((u32*) (fb_info->pseudo_palette))[regno] = |
558 | ((red & 0xf800) ) | |
559 | ((green & 0xfc00) >> 5) | |
560 | ((blue & 0xf800) >> 11); |
561 | } |
562 | break; |
563 | /* I'm pretty sure that one or the other of these |
564 | doesn't exist on 68k Macs */ |
565 | case 24: |
566 | red >>= 8; |
567 | green >>= 8; |
568 | blue >>= 8; |
569 | ((u32 *)(fb_info->pseudo_palette))[regno] = |
570 | (red << fb_info->var.red.offset) | |
571 | (green << fb_info->var.green.offset) | |
572 | (blue << fb_info->var.blue.offset); |
573 | break; |
574 | case 32: |
575 | red >>= 8; |
576 | green >>= 8; |
577 | blue >>= 8; |
578 | ((u32 *)(fb_info->pseudo_palette))[regno] = |
579 | (red << fb_info->var.red.offset) | |
580 | (green << fb_info->var.green.offset) | |
581 | (blue << fb_info->var.blue.offset); |
582 | break; |
583 | } |
584 | } |
585 | |
586 | return 0; |
587 | } |
588 | |
589 | static struct fb_ops macfb_ops = { |
590 | .owner = THIS_MODULE, |
591 | .fb_setcolreg = macfb_setcolreg, |
592 | .fb_fillrect = cfb_fillrect, |
593 | .fb_copyarea = cfb_copyarea, |
594 | .fb_imageblit = cfb_imageblit, |
595 | }; |
596 | |
597 | static void __init macfb_setup(char *options) |
598 | { |
599 | char *this_opt; |
600 | |
601 | if (!options || !*options) |
602 | return; |
603 | |
604 | while ((this_opt = strsep(&options, ",")) != NULL) { |
605 | if (!*this_opt) continue; |
606 | |
607 | if (! strcmp(this_opt, "inverse")) |
608 | inverse=1; |
609 | /* This means "turn on experimental CLUT code" */ |
610 | else if (!strcmp(this_opt, "vidtest")) |
611 | vidtest=1; |
612 | } |
613 | } |
614 | |
615 | static void __init iounmap_macfb(void) |
616 | { |
617 | if (valkyrie_cmap_regs) |
618 | iounmap(valkyrie_cmap_regs); |
619 | if (dafb_cmap_regs) |
620 | iounmap(dafb_cmap_regs); |
621 | if (v8_brazil_cmap_regs) |
622 | iounmap(v8_brazil_cmap_regs); |
623 | if (rbv_cmap_regs) |
624 | iounmap(rbv_cmap_regs); |
625 | if (civic_cmap_regs) |
626 | iounmap(civic_cmap_regs); |
627 | if (csc_cmap_regs) |
628 | iounmap(csc_cmap_regs); |
629 | } |
630 | |
631 | static int __init macfb_init(void) |
632 | { |
633 | int video_cmap_len, video_is_nubus = 0; |
634 | struct nubus_dev* ndev = NULL; |
635 | char *option = NULL; |
636 | int err; |
637 | |
638 | if (fb_get_options("macfb", &option)) |
639 | return -ENODEV; |
640 | macfb_setup(option); |
641 | |
642 | if (!MACH_IS_MAC) |
643 | return -ENODEV; |
644 | |
645 | /* There can only be one internal video controller anyway so |
646 | we're not too worried about this */ |
647 | macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF; |
648 | macfb_defined.yres = mac_bi_data.dimensions >> 16; |
649 | macfb_defined.bits_per_pixel = mac_bi_data.videodepth; |
650 | macfb_fix.line_length = mac_bi_data.videorow; |
651 | macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres; |
652 | /* Note: physical address (since 2.1.127) */ |
653 | macfb_fix.smem_start = mac_bi_data.videoaddr; |
654 | /* This is actually redundant with the initial mappings. |
655 | However, there are some non-obvious aspects to the way |
656 | those mappings are set up, so this is in fact the safest |
657 | way to ensure that this driver will work on every possible |
658 | Mac */ |
659 | fb_info.screen_base = ioremap(mac_bi_data.videoaddr, macfb_fix.smem_len); |
660 | |
661 | printk("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n", |
662 | macfb_fix.smem_start, fb_info.screen_base, macfb_fix.smem_len/1024); |
663 | printk("macfb: mode is %dx%dx%d, linelength=%d\n", |
664 | macfb_defined.xres, macfb_defined.yres, macfb_defined.bits_per_pixel, macfb_fix.line_length); |
665 | |
666 | /* |
667 | * Fill in the available video resolution |
668 | */ |
669 | |
670 | macfb_defined.xres_virtual = macfb_defined.xres; |
671 | macfb_defined.yres_virtual = macfb_defined.yres; |
672 | macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres); |
673 | macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres); |
674 | |
675 | printk("macfb: scrolling: redraw\n"); |
676 | macfb_defined.yres_virtual = macfb_defined.yres; |
677 | |
678 | /* some dummy values for timing to make fbset happy */ |
679 | macfb_defined.pixclock = 10000000 / macfb_defined.xres * 1000 / macfb_defined.yres; |
680 | macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8; |
681 | macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8; |
682 | |
683 | switch (macfb_defined.bits_per_pixel) { |
684 | case 1: |
685 | /* XXX: I think this will catch any program that tries |
686 | to do FBIO_PUTCMAP when the visual is monochrome */ |
687 | macfb_defined.red.length = macfb_defined.bits_per_pixel; |
688 | macfb_defined.green.length = macfb_defined.bits_per_pixel; |
689 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; |
690 | video_cmap_len = 0; |
691 | macfb_fix.visual = FB_VISUAL_MONO01; |
692 | break; |
693 | case 2: |
694 | case 4: |
695 | case 8: |
696 | macfb_defined.red.length = macfb_defined.bits_per_pixel; |
697 | macfb_defined.green.length = macfb_defined.bits_per_pixel; |
698 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; |
699 | video_cmap_len = 1 << macfb_defined.bits_per_pixel; |
700 | macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR; |
701 | break; |
702 | case 16: |
703 | macfb_defined.transp.offset = 15; |
704 | macfb_defined.transp.length = 1; |
705 | macfb_defined.red.offset = 10; |
706 | macfb_defined.red.length = 5; |
707 | macfb_defined.green.offset = 5; |
708 | macfb_defined.green.length = 5; |
709 | macfb_defined.blue.offset = 0; |
710 | macfb_defined.blue.length = 5; |
711 | printk("macfb: directcolor: " |
712 | "size=1:5:5:5, shift=15:10:5:0\n"); |
713 | video_cmap_len = 16; |
714 | /* Should actually be FB_VISUAL_DIRECTCOLOR, but this |
715 | works too */ |
716 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; |
717 | break; |
718 | case 24: |
719 | case 32: |
720 | /* XXX: have to test these... can any 68k Macs |
721 | actually do this on internal video? */ |
722 | macfb_defined.red.offset = 16; |
723 | macfb_defined.red.length = 8; |
724 | macfb_defined.green.offset = 8; |
725 | macfb_defined.green.length = 8; |
726 | macfb_defined.blue.offset = 0; |
727 | macfb_defined.blue.length = 8; |
728 | printk("macfb: truecolor: " |
729 | "size=0:8:8:8, shift=0:16:8:0\n"); |
730 | video_cmap_len = 16; |
731 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; |
732 | default: |
733 | video_cmap_len = 0; |
734 | macfb_fix.visual = FB_VISUAL_MONO01; |
735 | printk("macfb: unknown or unsupported bit depth: %d\n", macfb_defined.bits_per_pixel); |
736 | break; |
737 | } |
738 | |
739 | /* Hardware dependent stuff */ |
740 | /* We take a wild guess that if the video physical address is |
741 | * in nubus slot space, that the nubus card is driving video. |
742 | * Penguin really ought to tell us whether we are using internal |
743 | * video or not. |
744 | */ |
745 | /* Hopefully we only find one of them. Otherwise our NuBus |
746 | code is really broken :-) */ |
747 | |
748 | while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, NUBUS_TYPE_VIDEO, ndev)) |
749 | != NULL) |
750 | { |
751 | if (!(mac_bi_data.videoaddr >= ndev->board->slot_addr |
752 | && (mac_bi_data.videoaddr < |
753 | (unsigned long)nubus_slot_addr(ndev->board->slot+1)))) |
754 | continue; |
755 | video_is_nubus = 1; |
756 | /* We should probably just use the slot address... */ |
757 | video_slot = ndev->board->slot; |
758 | |
759 | switch(ndev->dr_hw) { |
760 | case NUBUS_DRHW_APPLE_MDC: |
761 | strcpy(macfb_fix.id, "Mac Disp. Card"); |
762 | macfb_setpalette = mdc_setpalette; |
763 | macfb_defined.activate = FB_ACTIVATE_NOW; |
764 | break; |
765 | case NUBUS_DRHW_APPLE_TFB: |
766 | strcpy(macfb_fix.id, "Toby"); |
767 | macfb_setpalette = toby_setpalette; |
768 | macfb_defined.activate = FB_ACTIVATE_NOW; |
769 | break; |
770 | case NUBUS_DRHW_APPLE_JET: |
771 | strcpy(macfb_fix.id, "Jet"); |
772 | macfb_setpalette = jet_setpalette; |
773 | macfb_defined.activate = FB_ACTIVATE_NOW; |
774 | break; |
775 | default: |
776 | strcpy(macfb_fix.id, "Generic NuBus"); |
777 | break; |
778 | } |
779 | } |
780 | |
781 | /* If it's not a NuBus card, it must be internal video */ |
782 | /* FIXME: this function is getting way too big. (this driver |
783 | is too...) */ |
784 | if (!video_is_nubus) |
785 | switch( mac_bi_data.id ) |
786 | { |
787 | /* Valkyrie Quadras */ |
788 | case MAC_MODEL_Q630: |
789 | /* I'm not sure about this one */ |
790 | case MAC_MODEL_P588: |
791 | strcpy(macfb_fix.id, "Valkyrie"); |
792 | macfb_setpalette = valkyrie_setpalette; |
793 | macfb_defined.activate = FB_ACTIVATE_NOW; |
794 | valkyrie_cmap_regs = ioremap(DAC_BASE, 0x1000); |
795 | break; |
796 | |
797 | /* DAFB Quadras */ |
798 | /* Note: these first four have the v7 DAFB, which is |
799 | known to be rather unlike the ones used in the |
800 | other models */ |
801 | case MAC_MODEL_P475: |
802 | case MAC_MODEL_P475F: |
803 | case MAC_MODEL_P575: |
804 | case MAC_MODEL_Q605: |
805 | |
806 | case MAC_MODEL_Q800: |
807 | case MAC_MODEL_Q650: |
808 | case MAC_MODEL_Q610: |
809 | case MAC_MODEL_C650: |
810 | case MAC_MODEL_C610: |
811 | case MAC_MODEL_Q700: |
812 | case MAC_MODEL_Q900: |
813 | case MAC_MODEL_Q950: |
814 | strcpy(macfb_fix.id, "DAFB"); |
815 | macfb_setpalette = dafb_setpalette; |
816 | macfb_defined.activate = FB_ACTIVATE_NOW; |
817 | dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); |
818 | break; |
819 | |
820 | /* LC II uses the V8 framebuffer */ |
821 | case MAC_MODEL_LCII: |
822 | strcpy(macfb_fix.id, "V8"); |
823 | macfb_setpalette = v8_brazil_setpalette; |
824 | macfb_defined.activate = FB_ACTIVATE_NOW; |
825 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
826 | break; |
827 | |
828 | /* IIvi, IIvx use the "Brazil" framebuffer (which is |
829 | very much like the V8, it seems, and probably uses |
830 | the same DAC) */ |
831 | case MAC_MODEL_IIVI: |
832 | case MAC_MODEL_IIVX: |
833 | case MAC_MODEL_P600: |
834 | strcpy(macfb_fix.id, "Brazil"); |
835 | macfb_setpalette = v8_brazil_setpalette; |
836 | macfb_defined.activate = FB_ACTIVATE_NOW; |
837 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
838 | break; |
839 | |
840 | /* LC III (and friends) use the Sonora framebuffer */ |
841 | /* Incidentally this is also used in the non-AV models |
842 | of the x100 PowerMacs */ |
843 | /* These do in fact seem to use the same DAC interface |
844 | as the LC II. */ |
845 | case MAC_MODEL_LCIII: |
846 | case MAC_MODEL_P520: |
847 | case MAC_MODEL_P550: |
848 | case MAC_MODEL_P460: |
849 | macfb_setpalette = v8_brazil_setpalette; |
850 | macfb_defined.activate = FB_ACTIVATE_NOW; |
851 | strcpy(macfb_fix.id, "Sonora"); |
852 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
853 | break; |
854 | |
855 | /* IIci and IIsi use the infamous RBV chip |
856 | (the IIsi is just a rebadged and crippled |
857 | IIci in a different case, BTW) */ |
858 | case MAC_MODEL_IICI: |
859 | case MAC_MODEL_IISI: |
860 | macfb_setpalette = rbv_setpalette; |
861 | macfb_defined.activate = FB_ACTIVATE_NOW; |
862 | strcpy(macfb_fix.id, "RBV"); |
863 | rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); |
864 | break; |
865 | |
866 | /* AVs use the Civic framebuffer */ |
867 | case MAC_MODEL_Q840: |
868 | case MAC_MODEL_C660: |
869 | macfb_setpalette = civic_setpalette; |
870 | macfb_defined.activate = FB_ACTIVATE_NOW; |
871 | strcpy(macfb_fix.id, "Civic"); |
872 | civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000); |
873 | break; |
874 | |
875 | |
876 | /* Write a setpalette function for your machine, then |
877 | you can add something similar here. These are |
878 | grouped by classes of video chipsets. Some of this |
879 | information is from the VideoToolbox "Bugs" web |
880 | page at |
881 | http://rajsky.psych.nyu.edu/Tips/VideoBugs.html */ |
882 | |
883 | /* Assorted weirdos */ |
884 | /* We think this may be like the LC II */ |
885 | case MAC_MODEL_LC: |
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 | strcpy(macfb_fix.id, "LC"); |
893 | break; |
894 | /* We think this may be like the LC II */ |
895 | case MAC_MODEL_CCL: |
896 | if (vidtest) { |
897 | macfb_setpalette = v8_brazil_setpalette; |
898 | macfb_defined.activate = FB_ACTIVATE_NOW; |
899 | v8_brazil_cmap_regs = |
900 | ioremap(DAC_BASE, 0x1000); |
901 | } |
902 | strcpy(macfb_fix.id, "Color Classic"); |
903 | break; |
904 | |
905 | /* And we *do* mean "weirdos" */ |
906 | case MAC_MODEL_TV: |
907 | strcpy(macfb_fix.id, "Mac TV"); |
908 | break; |
909 | |
910 | /* These don't have colour, so no need to worry */ |
911 | case MAC_MODEL_SE30: |
912 | case MAC_MODEL_CLII: |
913 | strcpy(macfb_fix.id, "Monochrome"); |
914 | break; |
915 | |
916 | /* Powerbooks are particularly difficult. Many of |
917 | them have separate framebuffers for external and |
918 | internal video, which is admittedly pretty cool, |
919 | but will be a bit of a headache to support here. |
920 | Also, many of them are grayscale, and we don't |
921 | really support that. */ |
922 | |
923 | case MAC_MODEL_PB140: |
924 | case MAC_MODEL_PB145: |
925 | case MAC_MODEL_PB170: |
926 | strcpy(macfb_fix.id, "DDC"); |
927 | break; |
928 | |
929 | /* Internal is GSC, External (if present) is ViSC */ |
930 | case MAC_MODEL_PB150: /* no external video */ |
931 | case MAC_MODEL_PB160: |
932 | case MAC_MODEL_PB165: |
933 | case MAC_MODEL_PB180: |
934 | case MAC_MODEL_PB210: |
935 | case MAC_MODEL_PB230: |
936 | strcpy(macfb_fix.id, "GSC"); |
937 | break; |
938 | |
939 | /* Internal is TIM, External is ViSC */ |
940 | case MAC_MODEL_PB165C: |
941 | case MAC_MODEL_PB180C: |
942 | strcpy(macfb_fix.id, "TIM"); |
943 | break; |
944 | |
945 | /* Internal is CSC, External is Keystone+Ariel. */ |
946 | case MAC_MODEL_PB190: /* external video is optional */ |
947 | case MAC_MODEL_PB520: |
948 | case MAC_MODEL_PB250: |
949 | case MAC_MODEL_PB270C: |
950 | case MAC_MODEL_PB280: |
951 | case MAC_MODEL_PB280C: |
952 | macfb_setpalette = csc_setpalette; |
953 | macfb_defined.activate = FB_ACTIVATE_NOW; |
954 | strcpy(macfb_fix.id, "CSC"); |
955 | csc_cmap_regs = ioremap(CSC_BASE, 0x1000); |
956 | break; |
957 | |
958 | default: |
959 | strcpy(macfb_fix.id, "Unknown"); |
960 | break; |
961 | } |
962 | |
963 | fb_info.fbops = &macfb_ops; |
964 | fb_info.var = macfb_defined; |
965 | fb_info.fix = macfb_fix; |
966 | fb_info.pseudo_palette = pseudo_palette; |
967 | fb_info.flags = FBINFO_DEFAULT; |
968 | |
969 | err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); |
970 | if (err) |
971 | goto fail_unmap; |
972 | |
973 | err = register_framebuffer(&fb_info); |
974 | if (err) |
975 | goto fail_dealloc; |
976 | |
977 | printk("fb%d: %s frame buffer device\n", |
978 | fb_info.node, fb_info.fix.id); |
979 | return 0; |
980 | |
981 | fail_dealloc: |
982 | fb_dealloc_cmap(&fb_info.cmap); |
983 | fail_unmap: |
984 | iounmap(fb_info.screen_base); |
985 | iounmap_macfb(); |
986 | return err; |
987 | } |
988 | |
989 | module_init(macfb_init); |
990 | MODULE_LICENSE("GPL"); |
991 |
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