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pm2fb: RDAC_WR barriers clean up
[linux-2.6/pdupreez.git] / drivers / video / pm2fb.c
blob0a04483aa3e0272c59b9ad86165a668a0d2e28f5
1 /*
2 * Permedia2 framebuffer driver.
3 *
4 * 2.5/2.6 driver:
5 * Copyright (c) 2003 Jim Hague (jim.hague@acm.org)
6 *
7 * based on 2.4 driver:
8 * Copyright (c) 1998-2000 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
9 * Copyright (c) 1999 Jakub Jelinek (jakub@redhat.com)
10 *
11 * and additional input from James Simmon's port of Hannu Mallat's tdfx
12 * driver.
13 *
14 * I have a Creative Graphics Blaster Exxtreme card - pm2fb on x86. I
15 * have no access to other pm2fb implementations. Sparc (and thus
16 * hopefully other big-endian) devices now work, thanks to a lot of
17 * testing work by Ron Murray. I have no access to CVision hardware,
18 * and therefore for now I am omitting the CVision code.
19 *
20 * Multiple boards support has been on the TODO list for ages.
21 * Don't expect this to change.
22 *
23 * This file is subject to the terms and conditions of the GNU General Public
24 * License. See the file COPYING in the main directory of this archive for
25 * more details.
26 *
27 *
28 */
29
30 #include <linux/module.h>
31 #include <linux/moduleparam.h>
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/string.h>
35 #include <linux/mm.h>
36 #include <linux/slab.h>
37 #include <linux/delay.h>
38 #include <linux/fb.h>
39 #include <linux/init.h>
40 #include <linux/pci.h>
41
42 #include <video/permedia2.h>
43 #include <video/cvisionppc.h>
44
45 #if !defined(__LITTLE_ENDIAN) && !defined(__BIG_ENDIAN)
46 #error "The endianness of the target host has not been defined."
47 #endif
48
49 #if !defined(CONFIG_PCI)
50 #error "Only generic PCI cards supported."
51 #endif
52
53 #undef PM2FB_MASTER_DEBUG
54 #ifdef PM2FB_MASTER_DEBUG
55 #define DPRINTK(a,b...) printk(KERN_DEBUG "pm2fb: %s: " a, __FUNCTION__ , ## b)
56 #else
57 #define DPRINTK(a,b...)
58 #endif
59
60 /*
61 * Driver data
62 */
63 static char *mode __devinitdata = NULL;
64
65 /*
66 * The XFree GLINT driver will (I think to implement hardware cursor
67 * support on TVP4010 and similar where there is no RAMDAC - see
68 * comment in set_video) always request +ve sync regardless of what
69 * the mode requires. This screws me because I have a Sun
70 * fixed-frequency monitor which absolutely has to have -ve sync. So
71 * these flags allow the user to specify that requests for +ve sync
72 * should be silently turned in -ve sync.
73 */
74 static int lowhsync;
75 static int lowvsync;
76
77 /*
78 * The hardware state of the graphics card that isn't part of the
79 * screeninfo.
80 */
81 struct pm2fb_par
82 {
83 pm2type_t type; /* Board type */
84 unsigned char __iomem *v_regs;/* virtual address of p_regs */
85 u32 memclock; /* memclock */
86 u32 video; /* video flags before blanking */
87 u32 mem_config; /* MemConfig reg at probe */
88 u32 mem_control; /* MemControl reg at probe */
89 u32 boot_address; /* BootAddress reg at probe */
90 u32 palette[16];
91 };
92
93 /*
94 * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
95 * if we don't use modedb.
96 */
97 static struct fb_fix_screeninfo pm2fb_fix __devinitdata = {
98 .id = "",
99 .type = FB_TYPE_PACKED_PIXELS,
100 .visual = FB_VISUAL_PSEUDOCOLOR,
101 .xpanstep = 1,
102 .ypanstep = 1,
103 .ywrapstep = 0,
104 .accel = FB_ACCEL_3DLABS_PERMEDIA2,
105 };
106
107 /*
108 * Default video mode. In case the modedb doesn't work.
109 */
110 static struct fb_var_screeninfo pm2fb_var __devinitdata = {
111 /* "640x480, 8 bpp @ 60 Hz */
112 .xres = 640,
113 .yres = 480,
114 .xres_virtual = 640,
115 .yres_virtual = 480,
116 .bits_per_pixel =8,
117 .red = {0, 8, 0},
118 .blue = {0, 8, 0},
119 .green = {0, 8, 0},
120 .activate = FB_ACTIVATE_NOW,
121 .height = -1,
122 .width = -1,
123 .accel_flags = 0,
124 .pixclock = 39721,
125 .left_margin = 40,
126 .right_margin = 24,
127 .upper_margin = 32,
128 .lower_margin = 11,
129 .hsync_len = 96,
130 .vsync_len = 2,
131 .vmode = FB_VMODE_NONINTERLACED
132 };
133
134 /*
135 * Utility functions
136 */
137
138 static inline u32 RD32(unsigned char __iomem *base, s32 off)
139 {
140 return fb_readl(base + off);
141 }
142
143 static inline void WR32(unsigned char __iomem *base, s32 off, u32 v)
144 {
145 fb_writel(v, base + off);
146 }
147
148 static inline u32 pm2_RD(struct pm2fb_par* p, s32 off)
149 {
150 return RD32(p->v_regs, off);
151 }
152
153 static inline void pm2_WR(struct pm2fb_par* p, s32 off, u32 v)
154 {
155 WR32(p->v_regs, off, v);
156 }
157
158 static inline u32 pm2_RDAC_RD(struct pm2fb_par* p, s32 idx)
159 {
160 int index = PM2R_RD_INDEXED_DATA;
161 switch (p->type) {
162 case PM2_TYPE_PERMEDIA2:
163 pm2_WR(p, PM2R_RD_PALETTE_WRITE_ADDRESS, idx);
164 break;
165 case PM2_TYPE_PERMEDIA2V:
166 pm2_WR(p, PM2VR_RD_INDEX_LOW, idx & 0xff);
167 index = PM2VR_RD_INDEXED_DATA;
168 break;
169 }
170 mb();
171 return pm2_RD(p, index);
172 }
173
174 static inline void pm2_RDAC_WR(struct pm2fb_par* p, s32 idx, u32 v)
175 {
176 int index = PM2R_RD_INDEXED_DATA;
177 switch (p->type) {
178 case PM2_TYPE_PERMEDIA2:
179 pm2_WR(p, PM2R_RD_PALETTE_WRITE_ADDRESS, idx);
180 break;
181 case PM2_TYPE_PERMEDIA2V:
182 pm2_WR(p, PM2VR_RD_INDEX_LOW, idx & 0xff);
183 index = PM2VR_RD_INDEXED_DATA;
184 break;
185 }
186 wmb();
187 pm2_WR(p, index, v);
188 wmb();
189 }
190
191 static inline void pm2v_RDAC_WR(struct pm2fb_par* p, s32 idx, u32 v)
192 {
193 pm2_WR(p, PM2VR_RD_INDEX_LOW, idx & 0xff);
194 wmb();
195 pm2_WR(p, PM2VR_RD_INDEXED_DATA, v);
196 wmb();
197 }
198
199 #ifdef CONFIG_FB_PM2_FIFO_DISCONNECT
200 #define WAIT_FIFO(p,a)
201 #else
202 static inline void WAIT_FIFO(struct pm2fb_par* p, u32 a)
203 {
204 while( pm2_RD(p, PM2R_IN_FIFO_SPACE) < a );
205 mb();
206 }
207 #endif
208
209 /*
210 * partial products for the supported horizontal resolutions.
211 */
212 #define PACKPP(p0,p1,p2) (((p2) << 6) | ((p1) << 3) | (p0))
213 static const struct {
214 u16 width;
215 u16 pp;
216 } pp_table[] = {
217 { 32, PACKPP(1, 0, 0) }, { 64, PACKPP(1, 1, 0) },
218 { 96, PACKPP(1, 1, 1) }, { 128, PACKPP(2, 1, 1) },
219 { 160, PACKPP(2, 2, 1) }, { 192, PACKPP(2, 2, 2) },
220 { 224, PACKPP(3, 2, 1) }, { 256, PACKPP(3, 2, 2) },
221 { 288, PACKPP(3, 3, 1) }, { 320, PACKPP(3, 3, 2) },
222 { 384, PACKPP(3, 3, 3) }, { 416, PACKPP(4, 3, 1) },
223 { 448, PACKPP(4, 3, 2) }, { 512, PACKPP(4, 3, 3) },
224 { 544, PACKPP(4, 4, 1) }, { 576, PACKPP(4, 4, 2) },
225 { 640, PACKPP(4, 4, 3) }, { 768, PACKPP(4, 4, 4) },
226 { 800, PACKPP(5, 4, 1) }, { 832, PACKPP(5, 4, 2) },
227 { 896, PACKPP(5, 4, 3) }, { 1024, PACKPP(5, 4, 4) },
228 { 1056, PACKPP(5, 5, 1) }, { 1088, PACKPP(5, 5, 2) },
229 { 1152, PACKPP(5, 5, 3) }, { 1280, PACKPP(5, 5, 4) },
230 { 1536, PACKPP(5, 5, 5) }, { 1568, PACKPP(6, 5, 1) },
231 { 1600, PACKPP(6, 5, 2) }, { 1664, PACKPP(6, 5, 3) },
232 { 1792, PACKPP(6, 5, 4) }, { 2048, PACKPP(6, 5, 5) },
233 { 0, 0 } };
234
235 static u32 partprod(u32 xres)
236 {
237 int i;
238
239 for (i = 0; pp_table[i].width && pp_table[i].width != xres; i++)
240 ;
241 if ( pp_table[i].width == 0 )
242 DPRINTK("invalid width %u\n", xres);
243 return pp_table[i].pp;
244 }
245
246 static u32 to3264(u32 timing, int bpp, int is64)
247 {
248 switch (bpp) {
249 case 8:
250 timing >>= 2 + is64;
251 break;
252 case 16:
253 timing >>= 1 + is64;
254 break;
255 case 24:
256 timing = (timing * 3) >> (2 + is64);
257 break;
258 case 32:
259 if (is64)
260 timing >>= 1;
261 break;
262 }
263 return timing;
264 }
265
266 static void pm2_mnp(u32 clk, unsigned char* mm, unsigned char* nn,
267 unsigned char* pp)
268 {
269 unsigned char m;
270 unsigned char n;
271 unsigned char p;
272 u32 f;
273 s32 curr;
274 s32 delta = 100000;
275
276 *mm = *nn = *pp = 0;
277 for (n = 2; n < 15; n++) {
278 for (m = 2; m; m++) {
279 f = PM2_REFERENCE_CLOCK * m / n;
280 if (f >= 150000 && f <= 300000) {
281 for ( p = 0; p < 5; p++, f >>= 1) {
282 curr = ( clk > f ) ? clk - f : f - clk;
283 if ( curr < delta ) {
284 delta=curr;
285 *mm=m;
286 *nn=n;
287 *pp=p;
288 }
289 }
290 }
291 }
292 }
293 }
294
295 static void pm2v_mnp(u32 clk, unsigned char* mm, unsigned char* nn,
296 unsigned char* pp)
297 {
298 unsigned char m;
299 unsigned char n;
300 unsigned char p;
301 u32 f;
302 s32 delta = 1000;
303
304 *mm = *nn = *pp = 0;
305 for ( m = 1; m < 128; m++) {
306 for (n = 2 * m + 1; n; n++) {
307 for ( p = 0; p < 2; p++) {
308 f = ( PM2_REFERENCE_CLOCK >> ( p + 1 )) * n / m;
309 if ( clk > f - delta && clk < f + delta ) {
310 delta = ( clk > f ) ? clk - f : f - clk;
311 *mm=m;
312 *nn=n;
313 *pp=p;
314 }
315 }
316 }
317 }
318 }
319
320 static void clear_palette(struct pm2fb_par* p) {
321 int i=256;
322
323 WAIT_FIFO(p, 1);
324 pm2_WR(p, PM2R_RD_PALETTE_WRITE_ADDRESS, 0);
325 wmb();
326 while (i--) {
327 WAIT_FIFO(p, 3);
328 pm2_WR(p, PM2R_RD_PALETTE_DATA, 0);
329 pm2_WR(p, PM2R_RD_PALETTE_DATA, 0);
330 pm2_WR(p, PM2R_RD_PALETTE_DATA, 0);
331 }
332 }
333
334 static void reset_card(struct pm2fb_par* p)
335 {
336 if (p->type == PM2_TYPE_PERMEDIA2V)
337 pm2_WR(p, PM2VR_RD_INDEX_HIGH, 0);
338 pm2_WR(p, PM2R_RESET_STATUS, 0);
339 mb();
340 while (pm2_RD(p, PM2R_RESET_STATUS) & PM2F_BEING_RESET)
341 ;
342 mb();
343 #ifdef CONFIG_FB_PM2_FIFO_DISCONNECT
344 DPRINTK("FIFO disconnect enabled\n");
345 pm2_WR(p, PM2R_FIFO_DISCON, 1);
346 mb();
347 #endif
348
349 /* Restore stashed memory config information from probe */
350 WAIT_FIFO(p, 3);
351 pm2_WR(p, PM2R_MEM_CONTROL, p->mem_control);
352 pm2_WR(p, PM2R_BOOT_ADDRESS, p->boot_address);
353 wmb();
354 pm2_WR(p, PM2R_MEM_CONFIG, p->mem_config);
355 }
356
357 static void reset_config(struct pm2fb_par* p)
358 {
359 WAIT_FIFO(p, 52);
360 pm2_WR(p, PM2R_CHIP_CONFIG, pm2_RD(p, PM2R_CHIP_CONFIG)&
361 ~(PM2F_VGA_ENABLE|PM2F_VGA_FIXED));
362 pm2_WR(p, PM2R_BYPASS_WRITE_MASK, ~(0L));
363 pm2_WR(p, PM2R_FRAMEBUFFER_WRITE_MASK, ~(0L));
364 pm2_WR(p, PM2R_FIFO_CONTROL, 0);
365 pm2_WR(p, PM2R_APERTURE_ONE, 0);
366 pm2_WR(p, PM2R_APERTURE_TWO, 0);
367 pm2_WR(p, PM2R_RASTERIZER_MODE, 0);
368 pm2_WR(p, PM2R_DELTA_MODE, PM2F_DELTA_ORDER_RGB);
369 pm2_WR(p, PM2R_LB_READ_FORMAT, 0);
370 pm2_WR(p, PM2R_LB_WRITE_FORMAT, 0);
371 pm2_WR(p, PM2R_LB_READ_MODE, 0);
372 pm2_WR(p, PM2R_LB_SOURCE_OFFSET, 0);
373 pm2_WR(p, PM2R_FB_SOURCE_OFFSET, 0);
374 pm2_WR(p, PM2R_FB_PIXEL_OFFSET, 0);
375 pm2_WR(p, PM2R_FB_WINDOW_BASE, 0);
376 pm2_WR(p, PM2R_LB_WINDOW_BASE, 0);
377 pm2_WR(p, PM2R_FB_SOFT_WRITE_MASK, ~(0L));
378 pm2_WR(p, PM2R_FB_HARD_WRITE_MASK, ~(0L));
379 pm2_WR(p, PM2R_FB_READ_PIXEL, 0);
380 pm2_WR(p, PM2R_DITHER_MODE, 0);
381 pm2_WR(p, PM2R_AREA_STIPPLE_MODE, 0);
382 pm2_WR(p, PM2R_DEPTH_MODE, 0);
383 pm2_WR(p, PM2R_STENCIL_MODE, 0);
384 pm2_WR(p, PM2R_TEXTURE_ADDRESS_MODE, 0);
385 pm2_WR(p, PM2R_TEXTURE_READ_MODE, 0);
386 pm2_WR(p, PM2R_TEXEL_LUT_MODE, 0);
387 pm2_WR(p, PM2R_YUV_MODE, 0);
388 pm2_WR(p, PM2R_COLOR_DDA_MODE, 0);
389 pm2_WR(p, PM2R_TEXTURE_COLOR_MODE, 0);
390 pm2_WR(p, PM2R_FOG_MODE, 0);
391 pm2_WR(p, PM2R_ALPHA_BLEND_MODE, 0);
392 pm2_WR(p, PM2R_LOGICAL_OP_MODE, 0);
393 pm2_WR(p, PM2R_STATISTICS_MODE, 0);
394 pm2_WR(p, PM2R_SCISSOR_MODE, 0);
395 pm2_WR(p, PM2R_FILTER_MODE, PM2F_SYNCHRONIZATION);
396 switch (p->type) {
397 case PM2_TYPE_PERMEDIA2:
398 pm2_RDAC_WR(p, PM2I_RD_MODE_CONTROL, 0); /* no overlay */
399 pm2_RDAC_WR(p, PM2I_RD_CURSOR_CONTROL, 0);
400 pm2_RDAC_WR(p, PM2I_RD_MISC_CONTROL, PM2F_RD_PALETTE_WIDTH_8);
401 break;
402 case PM2_TYPE_PERMEDIA2V:
403 pm2v_RDAC_WR(p, PM2VI_RD_MISC_CONTROL, 1); /* 8bit */
404 break;
405 }
406 pm2_RDAC_WR(p, PM2I_RD_COLOR_KEY_CONTROL, 0);
407 pm2_RDAC_WR(p, PM2I_RD_OVERLAY_KEY, 0);
408 pm2_RDAC_WR(p, PM2I_RD_RED_KEY, 0);
409 pm2_RDAC_WR(p, PM2I_RD_GREEN_KEY, 0);
410 pm2_RDAC_WR(p, PM2I_RD_BLUE_KEY, 0);
411 }
412
413 static void set_aperture(struct pm2fb_par* p, u32 depth)
414 {
415 /*
416 * The hardware is little-endian. When used in big-endian
417 * hosts, the on-chip aperture settings are used where
418 * possible to translate from host to card byte order.
419 */
420 WAIT_FIFO(p, 4);
421 #ifdef __LITTLE_ENDIAN
422 pm2_WR(p, PM2R_APERTURE_ONE, PM2F_APERTURE_STANDARD);
423 #else
424 switch (depth) {
425 case 24: /* RGB->BGR */
426 /*
427 * We can't use the aperture to translate host to
428 * card byte order here, so we switch to BGR mode
429 * in pm2fb_set_par().
430 */
431 case 8: /* B->B */
432 pm2_WR(p, PM2R_APERTURE_ONE, PM2F_APERTURE_STANDARD);
433 break;
434 case 16: /* HL->LH */
435 pm2_WR(p, PM2R_APERTURE_ONE, PM2F_APERTURE_HALFWORDSWAP);
436 break;
437 case 32: /* RGBA->ABGR */
438 pm2_WR(p, PM2R_APERTURE_ONE, PM2F_APERTURE_BYTESWAP);
439 break;
440 }
441 #endif
442
443 // We don't use aperture two, so this may be superflous
444 pm2_WR(p, PM2R_APERTURE_TWO, PM2F_APERTURE_STANDARD);
445 }
446
447 static void set_color(struct pm2fb_par* p, unsigned char regno,
448 unsigned char r, unsigned char g, unsigned char b)
449 {
450 WAIT_FIFO(p, 4);
451 pm2_WR(p, PM2R_RD_PALETTE_WRITE_ADDRESS, regno);
452 wmb();
453 pm2_WR(p, PM2R_RD_PALETTE_DATA, r);
454 wmb();
455 pm2_WR(p, PM2R_RD_PALETTE_DATA, g);
456 wmb();
457 pm2_WR(p, PM2R_RD_PALETTE_DATA, b);
458 }
459
460 static void set_memclock(struct pm2fb_par* par, u32 clk)
461 {
462 int i;
463 unsigned char m, n, p;
464
465 switch (par->type) {
466 case PM2_TYPE_PERMEDIA2V:
467 pm2v_mnp(clk/2, &m, &n, &p);
468 WAIT_FIFO(par, 8);
469 pm2_WR(par, PM2VR_RD_INDEX_HIGH, PM2VI_RD_MCLK_CONTROL >> 8);
470 pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 0);
471 pm2v_RDAC_WR(par, PM2VI_RD_MCLK_PRESCALE, m);
472 pm2v_RDAC_WR(par, PM2VI_RD_MCLK_FEEDBACK, n);
473 pm2v_RDAC_WR(par, PM2VI_RD_MCLK_POSTSCALE, p);
474 pm2v_RDAC_WR(par, PM2VI_RD_MCLK_CONTROL, 1);
475 rmb();
476 for (i = 256;
477 i && !(pm2_RDAC_RD(par, PM2VI_RD_MCLK_CONTROL) & 2);
478 i--)
479 ;
480 pm2_WR(par, PM2VR_RD_INDEX_HIGH, 0);
481 break;
482 case PM2_TYPE_PERMEDIA2:
483 pm2_mnp(clk, &m, &n, &p);
484 WAIT_FIFO(par, 10);
485 pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 6);
486 pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_1, m);
487 pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_2, n);
488 pm2_RDAC_WR(par, PM2I_RD_MEMORY_CLOCK_3, 8|p);
489 pm2_RDAC_RD(par, PM2I_RD_MEMORY_CLOCK_STATUS);
490 rmb();
491 for (i = 256;
492 i && !(pm2_RD(par, PM2R_RD_INDEXED_DATA) & PM2F_PLL_LOCKED);
493 i--)
494 ;
495 break;
496 }
497 }
498
499 static void set_pixclock(struct pm2fb_par* par, u32 clk)
500 {
501 int i;
502 unsigned char m, n, p;
503
504 switch (par->type) {
505 case PM2_TYPE_PERMEDIA2:
506 pm2_mnp(clk, &m, &n, &p);
507 WAIT_FIFO(par, 8);
508 pm2_RDAC_WR(par, PM2I_RD_PIXEL_CLOCK_A3, 0);
509 pm2_RDAC_WR(par, PM2I_RD_PIXEL_CLOCK_A1, m);
510 pm2_RDAC_WR(par, PM2I_RD_PIXEL_CLOCK_A2, n);
511 pm2_RDAC_WR(par, PM2I_RD_PIXEL_CLOCK_A3, 8|p);
512 pm2_RDAC_RD(par, PM2I_RD_PIXEL_CLOCK_STATUS);
513 rmb();
514 for (i = 256;
515 i && !(pm2_RD(par, PM2R_RD_INDEXED_DATA) & PM2F_PLL_LOCKED);
516 i--)
517 ;
518 break;
519 case PM2_TYPE_PERMEDIA2V:
520 pm2v_mnp(clk/2, &m, &n, &p);
521 WAIT_FIFO(par, 8);
522 pm2_WR(par, PM2VR_RD_INDEX_HIGH, PM2VI_RD_CLK0_PRESCALE >> 8);
523 pm2v_RDAC_WR(par, PM2VI_RD_CLK0_PRESCALE, m);
524 pm2v_RDAC_WR(par, PM2VI_RD_CLK0_FEEDBACK, n);
525 pm2v_RDAC_WR(par, PM2VI_RD_CLK0_POSTSCALE, p);
526 pm2_WR(par, PM2VR_RD_INDEX_HIGH, 0);
527 break;
528 }
529 }
530
531 static void set_video(struct pm2fb_par* p, u32 video) {
532 u32 tmp;
533 u32 vsync;
534
535 vsync = video;
536
537 DPRINTK("video = 0x%x\n", video);
538
539 /*
540 * The hardware cursor needs +vsync to recognise vert retrace.
541 * We may not be using the hardware cursor, but the X Glint
542 * driver may well. So always set +hsync/+vsync and then set
543 * the RAMDAC to invert the sync if necessary.
544 */
545 vsync &= ~(PM2F_HSYNC_MASK|PM2F_VSYNC_MASK);
546 vsync |= PM2F_HSYNC_ACT_HIGH|PM2F_VSYNC_ACT_HIGH;
547
548 WAIT_FIFO(p, 5);
549 pm2_WR(p, PM2R_VIDEO_CONTROL, vsync);
550
551 switch (p->type) {
552 case PM2_TYPE_PERMEDIA2:
553 tmp = PM2F_RD_PALETTE_WIDTH_8;
554 if ((video & PM2F_HSYNC_MASK) == PM2F_HSYNC_ACT_LOW)
555 tmp |= 4; /* invert hsync */
556 if ((video & PM2F_VSYNC_MASK) == PM2F_VSYNC_ACT_LOW)
557 tmp |= 8; /* invert vsync */
558 pm2_RDAC_WR(p, PM2I_RD_MISC_CONTROL, tmp);
559 break;
560 case PM2_TYPE_PERMEDIA2V:
561 tmp = 0;
562 if ((video & PM2F_HSYNC_MASK) == PM2F_HSYNC_ACT_LOW)
563 tmp |= 1; /* invert hsync */
564 if ((video & PM2F_VSYNC_MASK) == PM2F_VSYNC_ACT_LOW)
565 tmp |= 4; /* invert vsync */
566 pm2v_RDAC_WR(p, PM2VI_RD_SYNC_CONTROL, tmp);
567 pm2v_RDAC_WR(p, PM2VI_RD_MISC_CONTROL, 1);
568 break;
569 }
570 }
571
572 /*
573 *
574 */
575
576 /**
577 * pm2fb_check_var - Optional function. Validates a var passed in.
578 * @var: frame buffer variable screen structure
579 * @info: frame buffer structure that represents a single frame buffer
580 *
581 * Checks to see if the hardware supports the state requested by
582 * var passed in.
583 *
584 * Returns negative errno on error, or zero on success.
585 */
586 static int pm2fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
587 {
588 u32 lpitch;
589
590 if (var->bits_per_pixel != 8 && var->bits_per_pixel != 16 &&
591 var->bits_per_pixel != 24 && var->bits_per_pixel != 32) {
592 DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
593 return -EINVAL;
594 }
595
596 if (var->xres != var->xres_virtual) {
597 DPRINTK("virtual x resolution != physical x resolution not supported\n");
598 return -EINVAL;
599 }
600
601 if (var->yres > var->yres_virtual) {
602 DPRINTK("virtual y resolution < physical y resolution not possible\n");
603 return -EINVAL;
604 }
605
606 if (var->xoffset) {
607 DPRINTK("xoffset not supported\n");
608 return -EINVAL;
609 }
610
611 if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
612 DPRINTK("interlace not supported\n");
613 return -EINVAL;
614 }
615
616 var->xres = (var->xres + 15) & ~15; /* could sometimes be 8 */
617 lpitch = var->xres * ((var->bits_per_pixel + 7)>>3);
618
619 if (var->xres < 320 || var->xres > 1600) {
620 DPRINTK("width not supported: %u\n", var->xres);
621 return -EINVAL;
622 }
623
624 if (var->yres < 200 || var->yres > 1200) {
625 DPRINTK("height not supported: %u\n", var->yres);
626 return -EINVAL;
627 }
628
629 if (lpitch * var->yres_virtual > info->fix.smem_len) {
630 DPRINTK("no memory for screen (%ux%ux%u)\n",
631 var->xres, var->yres_virtual, var->bits_per_pixel);
632 return -EINVAL;
633 }
634
635 if (PICOS2KHZ(var->pixclock) > PM2_MAX_PIXCLOCK) {
636 DPRINTK("pixclock too high (%ldKHz)\n", PICOS2KHZ(var->pixclock));
637 return -EINVAL;
638 }
639
640 var->transp.offset = 0;
641 var->transp.length = 0;
642 switch(var->bits_per_pixel) {
643 case 8:
644 var->red.length = var->green.length = var->blue.length = 8;
645 break;
646 case 16:
647 var->red.offset = 11;
648 var->red.length = 5;
649 var->green.offset = 5;
650 var->green.length = 6;
651 var->blue.offset = 0;
652 var->blue.length = 5;
653 break;
654 case 32:
655 var->transp.offset = 24;
656 var->transp.length = 8;
657 var->red.offset = 16;
658 var->green.offset = 8;
659 var->blue.offset = 0;
660 var->red.length = var->green.length = var->blue.length = 8;
661 break;
662 case 24:
663 #ifdef __BIG_ENDIAN
664 var->red.offset = 0;
665 var->blue.offset = 16;
666 #else
667 var->red.offset = 16;
668 var->blue.offset = 0;
669 #endif
670 var->green.offset = 8;
671 var->red.length = var->green.length = var->blue.length = 8;
672 break;
673 }
674 var->height = var->width = -1;
675
676 var->accel_flags = 0; /* Can't mmap if this is on */
677
678 DPRINTK("Checking graphics mode at %dx%d depth %d\n",
679 var->xres, var->yres, var->bits_per_pixel);
680 return 0;
681 }
682
683 /**
684 * pm2fb_set_par - Alters the hardware state.
685 * @info: frame buffer structure that represents a single frame buffer
686 *
687 * Using the fb_var_screeninfo in fb_info we set the resolution of the
688 * this particular framebuffer.
689 */
690 static int pm2fb_set_par(struct fb_info *info)
691 {
692 struct pm2fb_par *par = info->par;
693 u32 pixclock;
694 u32 width, height, depth;
695 u32 hsstart, hsend, hbend, htotal;
696 u32 vsstart, vsend, vbend, vtotal;
697 u32 stride;
698 u32 base;
699 u32 video = 0;
700 u32 clrmode = PM2F_RD_COLOR_MODE_RGB | PM2F_RD_GUI_ACTIVE;
701 u32 txtmap = 0;
702 u32 pixsize = 0;
703 u32 clrformat = 0;
704 u32 xres;
705 int data64;
706
707 reset_card(par);
708 reset_config(par);
709 clear_palette(par);
710 if ( par->memclock )
711 set_memclock(par, par->memclock);
712
713 width = (info->var.xres_virtual + 7) & ~7;
714 height = info->var.yres_virtual;
715 depth = (info->var.bits_per_pixel + 7) & ~7;
716 depth = (depth > 32) ? 32 : depth;
717 data64 = depth > 8 || par->type == PM2_TYPE_PERMEDIA2V;
718
719 xres = (info->var.xres + 31) & ~31;
720 pixclock = PICOS2KHZ(info->var.pixclock);
721 if (pixclock > PM2_MAX_PIXCLOCK) {
722 DPRINTK("pixclock too high (%uKHz)\n", pixclock);
723 return -EINVAL;
724 }
725
726 hsstart = to3264(info->var.right_margin, depth, data64);
727 hsend = hsstart + to3264(info->var.hsync_len, depth, data64);
728 hbend = hsend + to3264(info->var.left_margin, depth, data64);
729 htotal = to3264(xres, depth, data64) + hbend - 1;
730 vsstart = (info->var.lower_margin)
731 ? info->var.lower_margin - 1
732 : 0; /* FIXME! */
733 vsend = info->var.lower_margin + info->var.vsync_len - 1;
734 vbend = info->var.lower_margin + info->var.vsync_len + info->var.upper_margin;
735 vtotal = info->var.yres + vbend - 1;
736 stride = to3264(width, depth, 1);
737 base = to3264(info->var.yoffset * xres + info->var.xoffset, depth, 1);
738 if (data64)
739 video |= PM2F_DATA_64_ENABLE;
740
741 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) {
742 if (lowhsync) {
743 DPRINTK("ignoring +hsync, using -hsync.\n");
744 video |= PM2F_HSYNC_ACT_LOW;
745 } else
746 video |= PM2F_HSYNC_ACT_HIGH;
747 }
748 else
749 video |= PM2F_HSYNC_ACT_LOW;
750 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) {
751 if (lowvsync) {
752 DPRINTK("ignoring +vsync, using -vsync.\n");
753 video |= PM2F_VSYNC_ACT_LOW;
754 } else
755 video |= PM2F_VSYNC_ACT_HIGH;
756 }
757 else
758 video |= PM2F_VSYNC_ACT_LOW;
759 if ((info->var.vmode & FB_VMODE_MASK)==FB_VMODE_INTERLACED) {
760 DPRINTK("interlaced not supported\n");
761 return -EINVAL;
762 }
763 if ((info->var.vmode & FB_VMODE_MASK)==FB_VMODE_DOUBLE)
764 video |= PM2F_LINE_DOUBLE;
765 if ((info->var.activate & FB_ACTIVATE_MASK)==FB_ACTIVATE_NOW)
766 video |= PM2F_VIDEO_ENABLE;
767 par->video = video;
768
769 info->fix.visual =
770 (depth == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
771 info->fix.line_length = info->var.xres * depth / 8;
772 info->cmap.len = 256;
773
774 /*
775 * Settings calculated. Now write them out.
776 */
777 if (par->type == PM2_TYPE_PERMEDIA2V) {
778 WAIT_FIFO(par, 1);
779 pm2_WR(par, PM2VR_RD_INDEX_HIGH, 0);
780 }
781
782 set_aperture(par, depth);
783
784 mb();
785 WAIT_FIFO(par, 19);
786 pm2_RDAC_WR(par, PM2I_RD_COLOR_KEY_CONTROL,
787 ( depth == 8 ) ? 0 : PM2F_COLOR_KEY_TEST_OFF);
788 switch (depth) {
789 case 8:
790 pm2_WR(par, PM2R_FB_READ_PIXEL, 0);
791 clrformat = 0x0e;
792 break;
793 case 16:
794 pm2_WR(par, PM2R_FB_READ_PIXEL, 1);
795 clrmode |= PM2F_RD_TRUECOLOR | PM2F_RD_PIXELFORMAT_RGB565;
796 txtmap = PM2F_TEXTEL_SIZE_16;
797 pixsize = 1;
798 clrformat = 0x70;
799 break;
800 case 32:
801 pm2_WR(par, PM2R_FB_READ_PIXEL, 2);
802 clrmode |= PM2F_RD_TRUECOLOR | PM2F_RD_PIXELFORMAT_RGBA8888;
803 txtmap = PM2F_TEXTEL_SIZE_32;
804 pixsize = 2;
805 clrformat = 0x20;
806 break;
807 case 24:
808 pm2_WR(par, PM2R_FB_READ_PIXEL, 4);
809 clrmode |= PM2F_RD_TRUECOLOR | PM2F_RD_PIXELFORMAT_RGB888;
810 txtmap = PM2F_TEXTEL_SIZE_24;
811 pixsize = 4;
812 clrformat = 0x20;
813 break;
814 }
815 pm2_WR(par, PM2R_FB_WRITE_MODE, PM2F_FB_WRITE_ENABLE);
816 pm2_WR(par, PM2R_FB_READ_MODE, partprod(xres));
817 pm2_WR(par, PM2R_LB_READ_MODE, partprod(xres));
818 pm2_WR(par, PM2R_TEXTURE_MAP_FORMAT, txtmap | partprod(xres));
819 pm2_WR(par, PM2R_H_TOTAL, htotal);
820 pm2_WR(par, PM2R_HS_START, hsstart);
821 pm2_WR(par, PM2R_HS_END, hsend);
822 pm2_WR(par, PM2R_HG_END, hbend);
823 pm2_WR(par, PM2R_HB_END, hbend);
824 pm2_WR(par, PM2R_V_TOTAL, vtotal);
825 pm2_WR(par, PM2R_VS_START, vsstart);
826 pm2_WR(par, PM2R_VS_END, vsend);
827 pm2_WR(par, PM2R_VB_END, vbend);
828 pm2_WR(par, PM2R_SCREEN_STRIDE, stride);
829 wmb();
830 pm2_WR(par, PM2R_WINDOW_ORIGIN, 0);
831 pm2_WR(par, PM2R_SCREEN_SIZE, (height << 16) | width);
832 pm2_WR(par, PM2R_SCISSOR_MODE, PM2F_SCREEN_SCISSOR_ENABLE);
833 wmb();
834 pm2_WR(par, PM2R_SCREEN_BASE, base);
835 wmb();
836 set_video(par, video);
837 WAIT_FIFO(par, 4);
838 switch (par->type) {
839 case PM2_TYPE_PERMEDIA2:
840 pm2_RDAC_WR(par, PM2I_RD_COLOR_MODE, clrmode);
841 break;
842 case PM2_TYPE_PERMEDIA2V:
843 pm2v_RDAC_WR(par, PM2VI_RD_PIXEL_SIZE, pixsize);
844 pm2v_RDAC_WR(par, PM2VI_RD_COLOR_FORMAT, clrformat);
845 break;
846 }
847 set_pixclock(par, pixclock);
848 DPRINTK("Setting graphics mode at %dx%d depth %d\n",
849 info->var.xres, info->var.yres, info->var.bits_per_pixel);
850 return 0;
851 }
852
853 /**
854 * pm2fb_setcolreg - Sets a color register.
855 * @regno: boolean, 0 copy local, 1 get_user() function
856 * @red: frame buffer colormap structure
857 * @green: The green value which can be up to 16 bits wide
858 * @blue: The blue value which can be up to 16 bits wide.
859 * @transp: If supported the alpha value which can be up to 16 bits wide.
860 * @info: frame buffer info structure
861 *
862 * Set a single color register. The values supplied have a 16 bit
863 * magnitude which needs to be scaled in this function for the hardware.
864 * Pretty much a direct lift from tdfxfb.c.
865 *
866 * Returns negative errno on error, or zero on success.
867 */
868 static int pm2fb_setcolreg(unsigned regno, unsigned red, unsigned green,
869 unsigned blue, unsigned transp,
870 struct fb_info *info)
871 {
872 struct pm2fb_par *par = info->par;
873
874 if (regno >= info->cmap.len) /* no. of hw registers */
875 return 1;
876 /*
877 * Program hardware... do anything you want with transp
878 */
879
880 /* grayscale works only partially under directcolor */
881 if (info->var.grayscale) {
882 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
883 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
884 }
885
886 /* Directcolor:
887 * var->{color}.offset contains start of bitfield
888 * var->{color}.length contains length of bitfield
889 * {hardwarespecific} contains width of DAC
890 * cmap[X] is programmed to
891 * (X << red.offset) | (X << green.offset) | (X << blue.offset)
892 * RAMDAC[X] is programmed to (red, green, blue)
893 *
894 * Pseudocolor:
895 * uses offset = 0 && length = DAC register width.
896 * var->{color}.offset is 0
897 * var->{color}.length contains widht of DAC
898 * cmap is not used
899 * DAC[X] is programmed to (red, green, blue)
900 * Truecolor:
901 * does not use RAMDAC (usually has 3 of them).
902 * var->{color}.offset contains start of bitfield
903 * var->{color}.length contains length of bitfield
904 * cmap is programmed to
905 * (red << red.offset) | (green << green.offset) |
906 * (blue << blue.offset) | (transp << transp.offset)
907 * RAMDAC does not exist
908 */
909 #define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
910 switch (info->fix.visual) {
911 case FB_VISUAL_TRUECOLOR:
912 case FB_VISUAL_PSEUDOCOLOR:
913 red = CNVT_TOHW(red, info->var.red.length);
914 green = CNVT_TOHW(green, info->var.green.length);
915 blue = CNVT_TOHW(blue, info->var.blue.length);
916 transp = CNVT_TOHW(transp, info->var.transp.length);
917 break;
918 case FB_VISUAL_DIRECTCOLOR:
919 /* example here assumes 8 bit DAC. Might be different
920 * for your hardware */
921 red = CNVT_TOHW(red, 8);
922 green = CNVT_TOHW(green, 8);
923 blue = CNVT_TOHW(blue, 8);
924 /* hey, there is bug in transp handling... */
925 transp = CNVT_TOHW(transp, 8);
926 break;
927 }
928 #undef CNVT_TOHW
929 /* Truecolor has hardware independent palette */
930 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
931 u32 v;
932
933 if (regno >= 16)
934 return 1;
935
936 v = (red << info->var.red.offset) |
937 (green << info->var.green.offset) |
938 (blue << info->var.blue.offset) |
939 (transp << info->var.transp.offset);
940
941 switch (info->var.bits_per_pixel) {
942 case 8:
943 break;
944 case 16:
945 case 24:
946 case 32:
947 par->palette[regno] = v;
948 break;
949 }
950 return 0;
951 }
952 else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
953 set_color(par, regno, red, green, blue);
954
955 return 0;
956 }
957
958 /**
959 * pm2fb_pan_display - Pans the display.
960 * @var: frame buffer variable screen structure
961 * @info: frame buffer structure that represents a single frame buffer
962 *
963 * Pan (or wrap, depending on the `vmode' field) the display using the
964 * `xoffset' and `yoffset' fields of the `var' structure.
965 * If the values don't fit, return -EINVAL.
966 *
967 * Returns negative errno on error, or zero on success.
968 *
969 */
970 static int pm2fb_pan_display(struct fb_var_screeninfo *var,
971 struct fb_info *info)
972 {
973 struct pm2fb_par *p = info->par;
974 u32 base;
975 u32 depth;
976 u32 xres;
977
978 xres = (var->xres + 31) & ~31;
979 depth = (var->bits_per_pixel + 7) & ~7;
980 depth = (depth > 32) ? 32 : depth;
981 base = to3264(var->yoffset * xres + var->xoffset, depth, 1);
982 WAIT_FIFO(p, 1);
983 pm2_WR(p, PM2R_SCREEN_BASE, base);
984 return 0;
985 }
986
987 /**
988 * pm2fb_blank - Blanks the display.
989 * @blank_mode: the blank mode we want.
990 * @info: frame buffer structure that represents a single frame buffer
991 *
992 * Blank the screen if blank_mode != 0, else unblank. Return 0 if
993 * blanking succeeded, != 0 if un-/blanking failed due to e.g. a
994 * video mode which doesn't support it. Implements VESA suspend
995 * and powerdown modes on hardware that supports disabling hsync/vsync:
996 * blank_mode == 2: suspend vsync
997 * blank_mode == 3: suspend hsync
998 * blank_mode == 4: powerdown
999 *
1000 * Returns negative errno on error, or zero on success.
1001 *
1002 */
1003 static int pm2fb_blank(int blank_mode, struct fb_info *info)
1004 {
1005 struct pm2fb_par *par = info->par;
1006 u32 video = par->video;
1007
1008 DPRINTK("blank_mode %d\n", blank_mode);
1009
1010 switch (blank_mode) {
1011 case FB_BLANK_UNBLANK:
1012 /* Screen: On */
1013 video |= PM2F_VIDEO_ENABLE;
1014 break;
1015 case FB_BLANK_NORMAL:
1016 /* Screen: Off */
1017 video &= ~PM2F_VIDEO_ENABLE;
1018 break;
1019 case FB_BLANK_VSYNC_SUSPEND:
1020 /* VSync: Off */
1021 video &= ~(PM2F_VSYNC_MASK | PM2F_BLANK_LOW );
1022 break;
1023 case FB_BLANK_HSYNC_SUSPEND:
1024 /* HSync: Off */
1025 video &= ~(PM2F_HSYNC_MASK | PM2F_BLANK_LOW );
1026 break;
1027 case FB_BLANK_POWERDOWN:
1028 /* HSync: Off, VSync: Off */
1029 video &= ~(PM2F_VSYNC_MASK | PM2F_HSYNC_MASK| PM2F_BLANK_LOW);
1030 break;
1031 }
1032 set_video(par, video);
1033 return 0;
1034 }
1035
1036 static int pm2fb_sync(struct fb_info *info)
1037 {
1038 struct pm2fb_par *par = info->par;
1039
1040 WAIT_FIFO(par, 1);
1041 pm2_WR(par, PM2R_SYNC, 0);
1042 mb();
1043 do {
1044 while (pm2_RD(par, PM2R_OUT_FIFO_WORDS) == 0)
1045 udelay(10);
1046 rmb();
1047 } while (pm2_RD(par, PM2R_OUT_FIFO) != PM2TAG(PM2R_SYNC));
1048
1049 return 0;
1050 }
1051
1052 /*
1053 * block operation. copy=0: rectangle fill, copy=1: rectangle copy.
1054 */
1055 static void pm2fb_block_op(struct fb_info* info, int copy,
1056 s32 xsrc, s32 ysrc,
1057 s32 x, s32 y, s32 w, s32 h,
1058 u32 color) {
1059 struct pm2fb_par *par = info->par;
1060
1061 if (!w || !h)
1062 return;
1063 WAIT_FIFO(par, 5);
1064 pm2_WR(par, PM2R_CONFIG, PM2F_CONFIG_FB_WRITE_ENABLE |
1065 PM2F_CONFIG_FB_READ_SOURCE_ENABLE);
1066 if (copy)
1067 pm2_WR(par, PM2R_FB_SOURCE_DELTA,
1068 ((ysrc-y) & 0xfff) << 16 | ((xsrc-x) & 0xfff));
1069 else
1070 pm2_WR(par, PM2R_FB_BLOCK_COLOR, color);
1071 pm2_WR(par, PM2R_RECTANGLE_ORIGIN, (y << 16) | x);
1072 pm2_WR(par, PM2R_RECTANGLE_SIZE, (h << 16) | w);
1073 wmb();
1074 pm2_WR(par, PM2R_RENDER,PM2F_RENDER_RECTANGLE |
1075 (x<xsrc ? PM2F_INCREASE_X : 0) |
1076 (y<ysrc ? PM2F_INCREASE_Y : 0) |
1077 (copy ? 0 : PM2F_RENDER_FASTFILL));
1078 }
1079
1080 static void pm2fb_fillrect (struct fb_info *info,
1081 const struct fb_fillrect *region)
1082 {
1083 struct fb_fillrect modded;
1084 int vxres, vyres;
1085 u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ?
1086 ((u32*)info->pseudo_palette)[region->color] : region->color;
1087
1088 if (info->state != FBINFO_STATE_RUNNING)
1089 return;
1090 if ((info->flags & FBINFO_HWACCEL_DISABLED) ||
1091 region->rop != ROP_COPY ) {
1092 cfb_fillrect(info, region);
1093 return;
1094 }
1095
1096 vxres = info->var.xres_virtual;
1097 vyres = info->var.yres_virtual;
1098
1099 memcpy(&modded, region, sizeof(struct fb_fillrect));
1100
1101 if(!modded.width || !modded.height ||
1102 modded.dx >= vxres || modded.dy >= vyres)
1103 return;
1104
1105 if(modded.dx + modded.width > vxres)
1106 modded.width = vxres - modded.dx;
1107 if(modded.dy + modded.height > vyres)
1108 modded.height = vyres - modded.dy;
1109
1110 if(info->var.bits_per_pixel == 8)
1111 color |= color << 8;
1112 if(info->var.bits_per_pixel <= 16)
1113 color |= color << 16;
1114
1115 if(info->var.bits_per_pixel != 24)
1116 pm2fb_block_op(info, 0, 0, 0,
1117 modded.dx, modded.dy,
1118 modded.width, modded.height, color);
1119 else
1120 cfb_fillrect(info, region);
1121 }
1122
1123 static void pm2fb_copyarea(struct fb_info *info,
1124 const struct fb_copyarea *area)
1125 {
1126 struct fb_copyarea modded;
1127 u32 vxres, vyres;
1128
1129 if (info->state != FBINFO_STATE_RUNNING)
1130 return;
1131 if (info->flags & FBINFO_HWACCEL_DISABLED) {
1132 cfb_copyarea(info, area);
1133 return;
1134 }
1135
1136 memcpy(&modded, area, sizeof(struct fb_copyarea));
1137
1138 vxres = info->var.xres_virtual;
1139 vyres = info->var.yres_virtual;
1140
1141 if(!modded.width || !modded.height ||
1142 modded.sx >= vxres || modded.sy >= vyres ||
1143 modded.dx >= vxres || modded.dy >= vyres)
1144 return;
1145
1146 if(modded.sx + modded.width > vxres)
1147 modded.width = vxres - modded.sx;
1148 if(modded.dx + modded.width > vxres)
1149 modded.width = vxres - modded.dx;
1150 if(modded.sy + modded.height > vyres)
1151 modded.height = vyres - modded.sy;
1152 if(modded.dy + modded.height > vyres)
1153 modded.height = vyres - modded.dy;
1154
1155 pm2fb_block_op(info, 1, modded.sx, modded.sy,
1156 modded.dx, modded.dy,
1157 modded.width, modded.height, 0);
1158 }
1159
1160 /* ------------ Hardware Independent Functions ------------ */
1161
1162 /*
1163 * Frame buffer operations
1164 */
1165
1166 static struct fb_ops pm2fb_ops = {
1167 .owner = THIS_MODULE,
1168 .fb_check_var = pm2fb_check_var,
1169 .fb_set_par = pm2fb_set_par,
1170 .fb_setcolreg = pm2fb_setcolreg,
1171 .fb_blank = pm2fb_blank,
1172 .fb_pan_display = pm2fb_pan_display,
1173 .fb_fillrect = pm2fb_fillrect,
1174 .fb_copyarea = pm2fb_copyarea,
1175 .fb_imageblit = cfb_imageblit,
1176 .fb_sync = pm2fb_sync,
1177 };
1178
1179 /*
1180 * PCI stuff
1181 */
1182
1183
1184 /**
1185 * Device initialisation
1186 *
1187 * Initialise and allocate resource for PCI device.
1188 *
1189 * @param pdev PCI device.
1190 * @param id PCI device ID.
1191 */
1192 static int __devinit pm2fb_probe(struct pci_dev *pdev,
1193 const struct pci_device_id *id)
1194 {
1195 struct pm2fb_par *default_par;
1196 struct fb_info *info;
1197 int err, err_retval = -ENXIO;
1198
1199 err = pci_enable_device(pdev);
1200 if ( err ) {
1201 printk(KERN_WARNING "pm2fb: Can't enable pdev: %d\n", err);
1202 return err;
1203 }
1204
1205 info = framebuffer_alloc(sizeof(struct pm2fb_par), &pdev->dev);
1206 if ( !info )
1207 return -ENOMEM;
1208 default_par = info->par;
1209
1210 switch (pdev->device) {
1211 case PCI_DEVICE_ID_TI_TVP4020:
1212 strcpy(pm2fb_fix.id, "TVP4020");
1213 default_par->type = PM2_TYPE_PERMEDIA2;
1214 break;
1215 case PCI_DEVICE_ID_3DLABS_PERMEDIA2:
1216 strcpy(pm2fb_fix.id, "Permedia2");
1217 default_par->type = PM2_TYPE_PERMEDIA2;
1218 break;
1219 case PCI_DEVICE_ID_3DLABS_PERMEDIA2V:
1220 strcpy(pm2fb_fix.id, "Permedia2v");
1221 default_par->type = PM2_TYPE_PERMEDIA2V;
1222 break;
1223 }
1224
1225 pm2fb_fix.mmio_start = pci_resource_start(pdev, 0);
1226 pm2fb_fix.mmio_len = PM2_REGS_SIZE;
1227
1228 #if defined(__BIG_ENDIAN)
1229 /*
1230 * PM2 has a 64k register file, mapped twice in 128k. Lower
1231 * map is little-endian, upper map is big-endian.
1232 */
1233 pm2fb_fix.mmio_start += PM2_REGS_SIZE;
1234 DPRINTK("Adjusting register base for big-endian.\n");
1235 #endif
1236 DPRINTK("Register base at 0x%lx\n", pm2fb_fix.mmio_start);
1237
1238 /* Registers - request region and map it. */
1239 if ( !request_mem_region(pm2fb_fix.mmio_start, pm2fb_fix.mmio_len,
1240 "pm2fb regbase") ) {
1241 printk(KERN_WARNING "pm2fb: Can't reserve regbase.\n");
1242 goto err_exit_neither;
1243 }
1244 default_par->v_regs =
1245 ioremap_nocache(pm2fb_fix.mmio_start, pm2fb_fix.mmio_len);
1246 if ( !default_par->v_regs ) {
1247 printk(KERN_WARNING "pm2fb: Can't remap %s register area.\n",
1248 pm2fb_fix.id);
1249 release_mem_region(pm2fb_fix.mmio_start, pm2fb_fix.mmio_len);
1250 goto err_exit_neither;
1251 }
1252
1253 /* Stash away memory register info for use when we reset the board */
1254 default_par->mem_control = pm2_RD(default_par, PM2R_MEM_CONTROL);
1255 default_par->boot_address = pm2_RD(default_par, PM2R_BOOT_ADDRESS);
1256 default_par->mem_config = pm2_RD(default_par, PM2R_MEM_CONFIG);
1257 DPRINTK("MemControl 0x%x BootAddress 0x%x MemConfig 0x%x\n",
1258 default_par->mem_control, default_par->boot_address,
1259 default_par->mem_config);
1260
1261 if(default_par->mem_control == 0 &&
1262 default_par->boot_address == 0x31 &&
1263 default_par->mem_config == 0x259fffff) {
1264 default_par->memclock = CVPPC_MEMCLOCK;
1265 default_par->mem_control=0;
1266 default_par->boot_address=0x20;
1267 default_par->mem_config=0xe6002021;
1268 if (pdev->subsystem_vendor == 0x1048 &&
1269 pdev->subsystem_device == 0x0a31) {
1270 DPRINTK("subsystem_vendor: %04x, subsystem_device: %04x\n",
1271 pdev->subsystem_vendor, pdev->subsystem_device);
1272 DPRINTK("We have not been initialized by VGA BIOS "
1273 "and are running on an Elsa Winner 2000 Office\n");
1274 DPRINTK("Initializing card timings manually...\n");
1275 default_par->memclock=70000;
1276 }
1277 if (pdev->subsystem_vendor == 0x3d3d &&
1278 pdev->subsystem_device == 0x0100) {
1279 DPRINTK("subsystem_vendor: %04x, subsystem_device: %04x\n",
1280 pdev->subsystem_vendor, pdev->subsystem_device);
1281 DPRINTK("We have not been initialized by VGA BIOS "
1282 "and are running on an 3dlabs reference board\n");
1283 DPRINTK("Initializing card timings manually...\n");
1284 default_par->memclock=74894;
1285 }
1286 }
1287
1288 /* Now work out how big lfb is going to be. */
1289 switch(default_par->mem_config & PM2F_MEM_CONFIG_RAM_MASK) {
1290 case PM2F_MEM_BANKS_1:
1291 pm2fb_fix.smem_len=0x200000;
1292 break;
1293 case PM2F_MEM_BANKS_2:
1294 pm2fb_fix.smem_len=0x400000;
1295 break;
1296 case PM2F_MEM_BANKS_3:
1297 pm2fb_fix.smem_len=0x600000;
1298 break;
1299 case PM2F_MEM_BANKS_4:
1300 pm2fb_fix.smem_len=0x800000;
1301 break;
1302 }
1303 pm2fb_fix.smem_start = pci_resource_start(pdev, 1);
1304
1305 /* Linear frame buffer - request region and map it. */
1306 if ( !request_mem_region(pm2fb_fix.smem_start, pm2fb_fix.smem_len,
1307 "pm2fb smem") ) {
1308 printk(KERN_WARNING "pm2fb: Can't reserve smem.\n");
1309 goto err_exit_mmio;
1310 }
1311 info->screen_base =
1312 ioremap_nocache(pm2fb_fix.smem_start, pm2fb_fix.smem_len);
1313 if ( !info->screen_base ) {
1314 printk(KERN_WARNING "pm2fb: Can't ioremap smem area.\n");
1315 release_mem_region(pm2fb_fix.smem_start, pm2fb_fix.smem_len);
1316 goto err_exit_mmio;
1317 }
1318
1319 info->fbops = &pm2fb_ops;
1320 info->fix = pm2fb_fix;
1321 info->pseudo_palette = default_par->palette;
1322 info->flags = FBINFO_DEFAULT |
1323 FBINFO_HWACCEL_YPAN |
1324 FBINFO_HWACCEL_COPYAREA |
1325 FBINFO_HWACCEL_FILLRECT;
1326
1327 if (!mode)
1328 mode = "640x480@60";
1329
1330 err = fb_find_mode(&info->var, info, mode, NULL, 0, NULL, 8);
1331 if (!err || err == 4)
1332 info->var = pm2fb_var;
1333
1334 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
1335 goto err_exit_both;
1336
1337 if (register_framebuffer(info) < 0)
1338 goto err_exit_all;
1339
1340 printk(KERN_INFO "fb%d: %s frame buffer device, memory = %dK.\n",
1341 info->node, info->fix.id, pm2fb_fix.smem_len / 1024);
1342
1343 /*
1344 * Our driver data
1345 */
1346 pci_set_drvdata(pdev, info);
1347
1348 return 0;
1349
1350 err_exit_all:
1351 fb_dealloc_cmap(&info->cmap);
1352 err_exit_both:
1353 iounmap(info->screen_base);
1354 release_mem_region(pm2fb_fix.smem_start, pm2fb_fix.smem_len);
1355 err_exit_mmio:
1356 iounmap(default_par->v_regs);
1357 release_mem_region(pm2fb_fix.mmio_start, pm2fb_fix.mmio_len);
1358 err_exit_neither:
1359 framebuffer_release(info);
1360 return err_retval;
1361 }
1362
1363 /**
1364 * Device removal.
1365 *
1366 * Release all device resources.
1367 *
1368 * @param pdev PCI device to clean up.
1369 */
1370 static void __devexit pm2fb_remove(struct pci_dev *pdev)
1371 {
1372 struct fb_info* info = pci_get_drvdata(pdev);
1373 struct fb_fix_screeninfo* fix = &info->fix;
1374 struct pm2fb_par *par = info->par;
1375
1376 unregister_framebuffer(info);
1377
1378 iounmap(info->screen_base);
1379 release_mem_region(fix->smem_start, fix->smem_len);
1380 iounmap(par->v_regs);
1381 release_mem_region(fix->mmio_start, fix->mmio_len);
1382
1383 pci_set_drvdata(pdev, NULL);
1384 kfree(info);
1385 }
1386
1387 static struct pci_device_id pm2fb_id_table[] = {
1388 { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_TVP4020,
1389 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
1390 0xff0000, 0 },
1391 { PCI_VENDOR_ID_3DLABS, PCI_DEVICE_ID_3DLABS_PERMEDIA2,
1392 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
1393 0xff0000, 0 },
1394 { PCI_VENDOR_ID_3DLABS, PCI_DEVICE_ID_3DLABS_PERMEDIA2V,
1395 PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
1396 0xff0000, 0 },
1397 { PCI_VENDOR_ID_3DLABS, PCI_DEVICE_ID_3DLABS_PERMEDIA2V,
1398 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NOT_DEFINED_VGA << 8,
1399 0xff00, 0 },
1400 { 0, }
1401 };
1402
1403 static struct pci_driver pm2fb_driver = {
1404 .name = "pm2fb",
1405 .id_table = pm2fb_id_table,
1406 .probe = pm2fb_probe,
1407 .remove = __devexit_p(pm2fb_remove),
1408 };
1409
1410 MODULE_DEVICE_TABLE(pci, pm2fb_id_table);
1411
1412
1413 #ifndef MODULE
1414 /**
1415 * Parse user speficied options.
1416 *
1417 * This is, comma-separated options following `video=pm2fb:'.
1418 */
1419 static int __init pm2fb_setup(char *options)
1420 {
1421 char* this_opt;
1422
1423 if (!options || !*options)
1424 return 0;
1425
1426 while ((this_opt = strsep(&options, ",")) != NULL) {
1427 if (!*this_opt)
1428 continue;
1429 if(!strcmp(this_opt, "lowhsync")) {
1430 lowhsync = 1;
1431 } else if(!strcmp(this_opt, "lowvsync")) {
1432 lowvsync = 1;
1433 } else {
1434 mode = this_opt;
1435 }
1436 }
1437 return 0;
1438 }
1439 #endif
1440
1441
1442 static int __init pm2fb_init(void)
1443 {
1444 #ifndef MODULE
1445 char *option = NULL;
1446
1447 if (fb_get_options("pm2fb", &option))
1448 return -ENODEV;
1449 pm2fb_setup(option);
1450 #endif
1451
1452 return pci_register_driver(&pm2fb_driver);
1453 }
1454
1455 module_init(pm2fb_init);
1456
1457 #ifdef MODULE
1458 /*
1459 * Cleanup
1460 */
1461
1462 static void __exit pm2fb_exit(void)
1463 {
1464 pci_unregister_driver(&pm2fb_driver);
1465 }
1466 #endif
1467
1468 #ifdef MODULE
1469 module_exit(pm2fb_exit);
1470
1471 module_param(mode, charp, 0);
1472 MODULE_PARM_DESC(mode, "Preferred video mode e.g. '648x480-8@60'");
1473 module_param(lowhsync, bool, 0);
1474 MODULE_PARM_DESC(lowhsync, "Force horizontal sync low regardless of mode");
1475 module_param(lowvsync, bool, 0);
1476 MODULE_PARM_DESC(lowvsync, "Force vertical sync low regardless of mode");
1477
1478 MODULE_AUTHOR("Jim Hague <jim.hague@acm.org>");
1479 MODULE_DESCRIPTION("Permedia2 framebuffer device driver");
1480 MODULE_LICENSE("GPL");
1481 #endif
Linux branches of Pieter du Preez