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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> | |
1da177e4 LT |
23 | #include <linux/errno.h> |
24 | #include <linux/string.h> | |
25 | #include <linux/mm.h> | |
1da177e4 LT |
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> | |
1da177e4 LT |
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 | ||
3839d01d | 80 | static struct { |
1da177e4 LT |
81 | unsigned char addr; |
82 | /* Note: word-aligned */ | |
83 | char pad[3]; | |
84 | unsigned char lut; | |
3839d01d | 85 | } __iomem *valkyrie_cmap_regs; |
1da177e4 | 86 | |
3839d01d | 87 | static struct { |
1da177e4 LT |
88 | unsigned char addr; |
89 | unsigned char lut; | |
3839d01d | 90 | } __iomem *v8_brazil_cmap_regs; |
1da177e4 | 91 | |
3839d01d | 92 | static struct { |
1da177e4 LT |
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 */ | |
3839d01d | 98 | } __iomem *rbv_cmap_regs; |
1da177e4 | 99 | |
3839d01d | 100 | static struct { |
1da177e4 LT |
101 | unsigned long reset; |
102 | unsigned long pad1[3]; | |
103 | unsigned char pad2[3]; | |
104 | unsigned char lut; | |
3839d01d | 105 | } __iomem *dafb_cmap_regs; |
1da177e4 | 106 | |
3839d01d | 107 | static struct { |
1da177e4 LT |
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 */ | |
3839d01d | 116 | } __iomem *civic_cmap_regs; |
1da177e4 | 117 | |
3839d01d | 118 | static struct { |
1da177e4 LT |
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 */ | |
3839d01d | 125 | } __iomem *csc_cmap_regs; |
1da177e4 LT |
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 = { | |
1da177e4 LT |
166 | .type = FB_TYPE_PACKED_PIXELS, |
167 | .accel = FB_ACCEL_NONE, | |
168 | }; | |
169 | ||
170 | static struct fb_info fb_info; | |
24fc7223 | 171 | static u32 pseudo_palette[16]; |
1da177e4 LT |
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); | |
3839d01d FT |
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); | |
1da177e4 LT |
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 | ||
24fc7223 AD |
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] = | |
1da177e4 LT |
551 | ((red & 0xf800) >> 1) | |
552 | ((green & 0xf800) >> 6) | | |
553 | ((blue & 0xf800) >> 11) | | |
554 | ((transp != 0) << 15); | |
24fc7223 AD |
555 | } else { |
556 | /* 0:5:6:5 */ | |
557 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
1da177e4 LT |
558 | ((red & 0xf800) ) | |
559 | ((green & 0xfc00) >> 5) | | |
560 | ((blue & 0xf800) >> 11); | |
24fc7223 AD |
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; | |
1da177e4 | 583 | } |
24fc7223 AD |
584 | } |
585 | ||
586 | return 0; | |
1da177e4 LT |
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, | |
1da177e4 LT |
595 | }; |
596 | ||
511e7483 | 597 | static void __init macfb_setup(char *options) |
1da177e4 LT |
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 | ||
164a765b AL |
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 | ||
ed1705af | 631 | static int __init macfb_init(void) |
1da177e4 LT |
632 | { |
633 | int video_cmap_len, video_is_nubus = 0; | |
634 | struct nubus_dev* ndev = NULL; | |
635 | char *option = NULL; | |
ed1705af | 636 | int err; |
1da177e4 LT |
637 | |
638 | if (fb_get_options("macfb", &option)) | |
639 | return -ENODEV; | |
640 | macfb_setup(option); | |
641 | ||
642 | if (!MACH_IS_MAC) | |
ed1705af | 643 | return -ENODEV; |
1da177e4 LT |
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: | |
89c223a6 | 761 | strcpy(macfb_fix.id, "Mac Disp. Card"); |
1da177e4 LT |
762 | macfb_setpalette = mdc_setpalette; |
763 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
764 | break; | |
765 | case NUBUS_DRHW_APPLE_TFB: | |
89c223a6 | 766 | strcpy(macfb_fix.id, "Toby"); |
1da177e4 LT |
767 | macfb_setpalette = toby_setpalette; |
768 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
769 | break; | |
770 | case NUBUS_DRHW_APPLE_JET: | |
89c223a6 | 771 | strcpy(macfb_fix.id, "Jet"); |
1da177e4 LT |
772 | macfb_setpalette = jet_setpalette; |
773 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
774 | break; | |
775 | default: | |
89c223a6 | 776 | strcpy(macfb_fix.id, "Generic NuBus"); |
1da177e4 LT |
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 | { | |
1da177e4 LT |
787 | /* Valkyrie Quadras */ |
788 | case MAC_MODEL_Q630: | |
789 | /* I'm not sure about this one */ | |
790 | case MAC_MODEL_P588: | |
89c223a6 | 791 | strcpy(macfb_fix.id, "Valkyrie"); |
1da177e4 LT |
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: | |
89c223a6 | 814 | strcpy(macfb_fix.id, "DAFB"); |
1da177e4 LT |
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: | |
89c223a6 | 822 | strcpy(macfb_fix.id, "V8"); |
1da177e4 LT |
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: | |
89c223a6 | 834 | strcpy(macfb_fix.id, "Brazil"); |
1da177e4 LT |
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; | |
89c223a6 | 851 | strcpy(macfb_fix.id, "Sonora"); |
1da177e4 LT |
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; | |
89c223a6 | 862 | strcpy(macfb_fix.id, "RBV"); |
1da177e4 LT |
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; | |
89c223a6 | 871 | strcpy(macfb_fix.id, "Civic"); |
1da177e4 LT |
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 | } | |
89c223a6 | 892 | strcpy(macfb_fix.id, "LC"); |
1da177e4 LT |
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 | } | |
89c223a6 | 902 | strcpy(macfb_fix.id, "Color Classic"); |
1da177e4 LT |
903 | break; |
904 | ||
905 | /* And we *do* mean "weirdos" */ | |
906 | case MAC_MODEL_TV: | |
89c223a6 | 907 | strcpy(macfb_fix.id, "Mac TV"); |
1da177e4 LT |
908 | break; |
909 | ||
910 | /* These don't have colour, so no need to worry */ | |
911 | case MAC_MODEL_SE30: | |
912 | case MAC_MODEL_CLII: | |
89c223a6 | 913 | strcpy(macfb_fix.id, "Monochrome"); |
1da177e4 LT |
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: | |
89c223a6 | 926 | strcpy(macfb_fix.id, "DDC"); |
1da177e4 LT |
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: | |
89c223a6 | 936 | strcpy(macfb_fix.id, "GSC"); |
1da177e4 LT |
937 | break; |
938 | ||
939 | /* Internal is TIM, External is ViSC */ | |
940 | case MAC_MODEL_PB165C: | |
941 | case MAC_MODEL_PB180C: | |
89c223a6 | 942 | strcpy(macfb_fix.id, "TIM"); |
1da177e4 LT |
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; | |
89c223a6 | 954 | strcpy(macfb_fix.id, "CSC"); |
1da177e4 LT |
955 | csc_cmap_regs = ioremap(CSC_BASE, 0x1000); |
956 | break; | |
957 | ||
958 | default: | |
89c223a6 | 959 | strcpy(macfb_fix.id, "Unknown"); |
1da177e4 LT |
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 | ||
89c223a6 FT |
969 | err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); |
970 | if (err) | |
971 | goto fail_unmap; | |
1da177e4 | 972 | |
ed1705af | 973 | err = register_framebuffer(&fb_info); |
89c223a6 FT |
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(); | |
ed1705af | 986 | return err; |
1da177e4 LT |
987 | } |
988 | ||
989 | module_init(macfb_init); | |
990 | MODULE_LICENSE("GPL"); |