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1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/sgivwfb.c -- SGI DBE frame buffer device | |
3 | * | |
4 | * Copyright (C) 1999 Silicon Graphics, Inc. | |
5 | * Jeffrey Newquist, newquist@engr.sgi.som | |
6 | * | |
7 | * This file is subject to the terms and conditions of the GNU General Public | |
8 | * License. See the file COPYING in the main directory of this archive for | |
9 | * more details. | |
10 | */ | |
11 | ||
12 | #include <linux/config.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/mm.h> | |
16 | #include <linux/errno.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/fb.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/ioport.h> | |
d052d1be RK |
21 | #include <linux/platform_device.h> |
22 | ||
1da177e4 LT |
23 | #include <asm/io.h> |
24 | #include <asm/mtrr.h> | |
25 | ||
26 | #define INCLUDE_TIMING_TABLE_DATA | |
27 | #define DBE_REG_BASE par->regs | |
28 | #include <video/sgivw.h> | |
29 | ||
30 | struct sgivw_par { | |
31 | struct asregs *regs; | |
32 | u32 cmap_fifo; | |
33 | u_long timing_num; | |
34 | }; | |
35 | ||
36 | #define FLATPANEL_SGI_1600SW 5 | |
37 | ||
38 | /* | |
39 | * RAM we reserve for the frame buffer. This defines the maximum screen | |
40 | * size | |
41 | * | |
42 | * The default can be overridden if the driver is compiled as a module | |
43 | */ | |
44 | ||
45 | /* set by arch/i386/kernel/setup.c */ | |
46 | extern unsigned long sgivwfb_mem_phys; | |
47 | extern unsigned long sgivwfb_mem_size; | |
48 | ||
49 | static int ypan = 0; | |
50 | static int ywrap = 0; | |
51 | ||
52 | static int flatpanel_id = -1; | |
53 | ||
54 | static struct fb_fix_screeninfo sgivwfb_fix __initdata = { | |
55 | .id = "SGI Vis WS FB", | |
56 | .type = FB_TYPE_PACKED_PIXELS, | |
57 | .visual = FB_VISUAL_PSEUDOCOLOR, | |
58 | .mmio_start = DBE_REG_PHYS, | |
59 | .mmio_len = DBE_REG_SIZE, | |
60 | .accel = FB_ACCEL_NONE, | |
61 | .line_length = 640, | |
62 | }; | |
63 | ||
64 | static struct fb_var_screeninfo sgivwfb_var __initdata = { | |
65 | /* 640x480, 8 bpp */ | |
66 | .xres = 640, | |
67 | .yres = 480, | |
68 | .xres_virtual = 640, | |
69 | .yres_virtual = 480, | |
70 | .bits_per_pixel = 8, | |
71 | .red = { 0, 8, 0 }, | |
72 | .green = { 0, 8, 0 }, | |
73 | .blue = { 0, 8, 0 }, | |
74 | .height = -1, | |
75 | .width = -1, | |
76 | .pixclock = 20000, | |
77 | .left_margin = 64, | |
78 | .right_margin = 64, | |
79 | .upper_margin = 32, | |
80 | .lower_margin = 32, | |
81 | .hsync_len = 64, | |
82 | .vsync_len = 2, | |
83 | .vmode = FB_VMODE_NONINTERLACED | |
84 | }; | |
85 | ||
86 | static struct fb_var_screeninfo sgivwfb_var1600sw __initdata = { | |
87 | /* 1600x1024, 8 bpp */ | |
88 | .xres = 1600, | |
89 | .yres = 1024, | |
90 | .xres_virtual = 1600, | |
91 | .yres_virtual = 1024, | |
92 | .bits_per_pixel = 8, | |
93 | .red = { 0, 8, 0 }, | |
94 | .green = { 0, 8, 0 }, | |
95 | .blue = { 0, 8, 0 }, | |
96 | .height = -1, | |
97 | .width = -1, | |
98 | .pixclock = 9353, | |
99 | .left_margin = 20, | |
100 | .right_margin = 30, | |
101 | .upper_margin = 37, | |
102 | .lower_margin = 3, | |
103 | .hsync_len = 20, | |
104 | .vsync_len = 3, | |
105 | .vmode = FB_VMODE_NONINTERLACED | |
106 | }; | |
107 | ||
108 | /* | |
109 | * Interface used by the world | |
110 | */ | |
111 | int sgivwfb_init(void); | |
112 | ||
113 | static int sgivwfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); | |
114 | static int sgivwfb_set_par(struct fb_info *info); | |
115 | static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green, | |
116 | u_int blue, u_int transp, | |
117 | struct fb_info *info); | |
118 | static int sgivwfb_mmap(struct fb_info *info, struct file *file, | |
119 | struct vm_area_struct *vma); | |
120 | ||
121 | static struct fb_ops sgivwfb_ops = { | |
122 | .owner = THIS_MODULE, | |
123 | .fb_check_var = sgivwfb_check_var, | |
124 | .fb_set_par = sgivwfb_set_par, | |
125 | .fb_setcolreg = sgivwfb_setcolreg, | |
126 | .fb_fillrect = cfb_fillrect, | |
127 | .fb_copyarea = cfb_copyarea, | |
128 | .fb_imageblit = cfb_imageblit, | |
129 | .fb_cursor = soft_cursor, | |
130 | .fb_mmap = sgivwfb_mmap, | |
131 | }; | |
132 | ||
133 | /* | |
134 | * Internal routines | |
135 | */ | |
136 | static unsigned long bytes_per_pixel(int bpp) | |
137 | { | |
138 | switch (bpp) { | |
139 | case 8: | |
140 | return 1; | |
141 | case 16: | |
142 | return 2; | |
143 | case 32: | |
144 | return 4; | |
145 | default: | |
146 | printk(KERN_INFO "sgivwfb: unsupported bpp %d\n", bpp); | |
147 | return 0; | |
148 | } | |
149 | } | |
150 | ||
151 | static unsigned long get_line_length(int xres_virtual, int bpp) | |
152 | { | |
153 | return (xres_virtual * bytes_per_pixel(bpp)); | |
154 | } | |
155 | ||
156 | /* | |
157 | * Function: dbe_TurnOffDma | |
158 | * Parameters: (None) | |
159 | * Description: This should turn off the monitor and dbe. This is used | |
160 | * when switching between the serial console and the graphics | |
161 | * console. | |
162 | */ | |
163 | ||
164 | static void dbe_TurnOffDma(struct sgivw_par *par) | |
165 | { | |
166 | unsigned int readVal; | |
167 | int i; | |
168 | ||
169 | // Check to see if things are already turned off: | |
170 | // 1) Check to see if dbe is not using the internal dotclock. | |
171 | // 2) Check to see if the xy counter in dbe is already off. | |
172 | ||
173 | DBE_GETREG(ctrlstat, readVal); | |
174 | if (GET_DBE_FIELD(CTRLSTAT, PCLKSEL, readVal) < 2) | |
175 | return; | |
176 | ||
177 | DBE_GETREG(vt_xy, readVal); | |
178 | if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1) | |
179 | return; | |
180 | ||
181 | // Otherwise, turn off dbe | |
182 | ||
183 | DBE_GETREG(ovr_control, readVal); | |
184 | SET_DBE_FIELD(OVR_CONTROL, OVR_DMA_ENABLE, readVal, 0); | |
185 | DBE_SETREG(ovr_control, readVal); | |
186 | udelay(1000); | |
187 | DBE_GETREG(frm_control, readVal); | |
188 | SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, readVal, 0); | |
189 | DBE_SETREG(frm_control, readVal); | |
190 | udelay(1000); | |
191 | DBE_GETREG(did_control, readVal); | |
192 | SET_DBE_FIELD(DID_CONTROL, DID_DMA_ENABLE, readVal, 0); | |
193 | DBE_SETREG(did_control, readVal); | |
194 | udelay(1000); | |
195 | ||
196 | // XXX HACK: | |
197 | // | |
198 | // This was necessary for GBE--we had to wait through two | |
199 | // vertical retrace periods before the pixel DMA was | |
200 | // turned off for sure. I've left this in for now, in | |
201 | // case dbe needs it. | |
202 | ||
203 | for (i = 0; i < 10000; i++) { | |
204 | DBE_GETREG(frm_inhwctrl, readVal); | |
205 | if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) == | |
206 | 0) | |
207 | udelay(10); | |
208 | else { | |
209 | DBE_GETREG(ovr_inhwctrl, readVal); | |
210 | if (GET_DBE_FIELD | |
211 | (OVR_INHWCTRL, OVR_DMA_ENABLE, readVal) == 0) | |
212 | udelay(10); | |
213 | else { | |
214 | DBE_GETREG(did_inhwctrl, readVal); | |
215 | if (GET_DBE_FIELD | |
216 | (DID_INHWCTRL, DID_DMA_ENABLE, | |
217 | readVal) == 0) | |
218 | udelay(10); | |
219 | else | |
220 | break; | |
221 | } | |
222 | } | |
223 | } | |
224 | } | |
225 | ||
226 | /* | |
227 | * Set the User Defined Part of the Display. Again if par use it to get | |
228 | * real video mode. | |
229 | */ | |
230 | static int sgivwfb_check_var(struct fb_var_screeninfo *var, | |
231 | struct fb_info *info) | |
232 | { | |
233 | struct sgivw_par *par = (struct sgivw_par *)info->par; | |
234 | struct dbe_timing_info *timing; | |
235 | u_long line_length; | |
236 | u_long min_mode; | |
237 | int req_dot; | |
238 | int test_mode; | |
239 | ||
240 | /* | |
241 | * FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal! | |
242 | * as FB_VMODE_SMOOTH_XPAN is only used internally | |
243 | */ | |
244 | ||
245 | if (var->vmode & FB_VMODE_CONUPDATE) { | |
246 | var->vmode |= FB_VMODE_YWRAP; | |
247 | var->xoffset = info->var.xoffset; | |
248 | var->yoffset = info->var.yoffset; | |
249 | } | |
250 | ||
251 | /* XXX FIXME - forcing var's */ | |
252 | var->xoffset = 0; | |
253 | var->yoffset = 0; | |
254 | ||
255 | /* Limit bpp to 8, 16, and 32 */ | |
256 | if (var->bits_per_pixel <= 8) | |
257 | var->bits_per_pixel = 8; | |
258 | else if (var->bits_per_pixel <= 16) | |
259 | var->bits_per_pixel = 16; | |
260 | else if (var->bits_per_pixel <= 32) | |
261 | var->bits_per_pixel = 32; | |
262 | else | |
263 | return -EINVAL; | |
264 | ||
265 | var->grayscale = 0; /* No grayscale for now */ | |
266 | ||
267 | /* determine valid resolution and timing */ | |
268 | for (min_mode = 0; min_mode < DBE_VT_SIZE; min_mode++) { | |
269 | if (dbeVTimings[min_mode].width >= var->xres && | |
270 | dbeVTimings[min_mode].height >= var->yres) | |
271 | break; | |
272 | } | |
273 | ||
274 | if (min_mode == DBE_VT_SIZE) | |
275 | return -EINVAL; /* Resolution to high */ | |
276 | ||
277 | /* XXX FIXME - should try to pick best refresh rate */ | |
278 | /* for now, pick closest dot-clock within 3MHz */ | |
279 | req_dot = PICOS2KHZ(var->pixclock); | |
280 | printk(KERN_INFO "sgivwfb: requested pixclock=%d ps (%d KHz)\n", | |
281 | var->pixclock, req_dot); | |
282 | test_mode = min_mode; | |
283 | while (dbeVTimings[min_mode].width == dbeVTimings[test_mode].width) { | |
284 | if (dbeVTimings[test_mode].cfreq + 3000 > req_dot) | |
285 | break; | |
286 | test_mode++; | |
287 | } | |
288 | if (dbeVTimings[min_mode].width != dbeVTimings[test_mode].width) | |
289 | test_mode--; | |
290 | min_mode = test_mode; | |
291 | timing = &dbeVTimings[min_mode]; | |
292 | printk(KERN_INFO "sgivwfb: granted dot-clock=%d KHz\n", timing->cfreq); | |
293 | ||
294 | /* Adjust virtual resolution, if necessary */ | |
295 | if (var->xres > var->xres_virtual || (!ywrap && !ypan)) | |
296 | var->xres_virtual = var->xres; | |
297 | if (var->yres > var->yres_virtual || (!ywrap && !ypan)) | |
298 | var->yres_virtual = var->yres; | |
299 | ||
300 | /* | |
301 | * Memory limit | |
302 | */ | |
303 | line_length = get_line_length(var->xres_virtual, var->bits_per_pixel); | |
304 | if (line_length * var->yres_virtual > sgivwfb_mem_size) | |
305 | return -ENOMEM; /* Virtual resolution to high */ | |
306 | ||
307 | info->fix.line_length = line_length; | |
308 | ||
309 | switch (var->bits_per_pixel) { | |
310 | case 8: | |
311 | var->red.offset = 0; | |
312 | var->red.length = 8; | |
313 | var->green.offset = 0; | |
314 | var->green.length = 8; | |
315 | var->blue.offset = 0; | |
316 | var->blue.length = 8; | |
317 | var->transp.offset = 0; | |
318 | var->transp.length = 0; | |
319 | break; | |
320 | case 16: /* RGBA 5551 */ | |
321 | var->red.offset = 11; | |
322 | var->red.length = 5; | |
323 | var->green.offset = 6; | |
324 | var->green.length = 5; | |
325 | var->blue.offset = 1; | |
326 | var->blue.length = 5; | |
327 | var->transp.offset = 0; | |
328 | var->transp.length = 0; | |
329 | break; | |
330 | case 32: /* RGB 8888 */ | |
331 | var->red.offset = 0; | |
332 | var->red.length = 8; | |
333 | var->green.offset = 8; | |
334 | var->green.length = 8; | |
335 | var->blue.offset = 16; | |
336 | var->blue.length = 8; | |
337 | var->transp.offset = 24; | |
338 | var->transp.length = 8; | |
339 | break; | |
340 | } | |
341 | var->red.msb_right = 0; | |
342 | var->green.msb_right = 0; | |
343 | var->blue.msb_right = 0; | |
344 | var->transp.msb_right = 0; | |
345 | ||
346 | /* set video timing information */ | |
347 | var->pixclock = KHZ2PICOS(timing->cfreq); | |
348 | var->left_margin = timing->htotal - timing->hsync_end; | |
349 | var->right_margin = timing->hsync_start - timing->width; | |
350 | var->upper_margin = timing->vtotal - timing->vsync_end; | |
351 | var->lower_margin = timing->vsync_start - timing->height; | |
352 | var->hsync_len = timing->hsync_end - timing->hsync_start; | |
353 | var->vsync_len = timing->vsync_end - timing->vsync_start; | |
354 | ||
355 | /* Ouch. This breaks the rules but timing_num is only important if you | |
356 | * change a video mode */ | |
357 | par->timing_num = min_mode; | |
358 | ||
359 | printk(KERN_INFO "sgivwfb: new video mode xres=%d yres=%d bpp=%d\n", | |
360 | var->xres, var->yres, var->bits_per_pixel); | |
361 | printk(KERN_INFO " vxres=%d vyres=%d\n", var->xres_virtual, | |
362 | var->yres_virtual); | |
363 | return 0; | |
364 | } | |
365 | ||
366 | /* | |
367 | * Setup flatpanel related registers. | |
368 | */ | |
369 | static void sgivwfb_setup_flatpanel(struct sgivw_par *par, struct dbe_timing_info *currentTiming) | |
370 | { | |
371 | int fp_wid, fp_hgt, fp_vbs, fp_vbe; | |
372 | u32 outputVal = 0; | |
373 | ||
374 | SET_DBE_FIELD(VT_FLAGS, HDRV_INVERT, outputVal, | |
375 | (currentTiming->flags & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1); | |
376 | SET_DBE_FIELD(VT_FLAGS, VDRV_INVERT, outputVal, | |
377 | (currentTiming->flags & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1); | |
378 | DBE_SETREG(vt_flags, outputVal); | |
379 | ||
380 | /* Turn on the flat panel */ | |
381 | switch (flatpanel_id) { | |
382 | case FLATPANEL_SGI_1600SW: | |
383 | fp_wid = 1600; | |
384 | fp_hgt = 1024; | |
385 | fp_vbs = 0; | |
386 | fp_vbe = 1600; | |
387 | currentTiming->pll_m = 4; | |
388 | currentTiming->pll_n = 1; | |
389 | currentTiming->pll_p = 0; | |
390 | break; | |
391 | default: | |
392 | fp_wid = fp_hgt = fp_vbs = fp_vbe = 0xfff; | |
393 | } | |
394 | ||
395 | outputVal = 0; | |
396 | SET_DBE_FIELD(FP_DE, FP_DE_ON, outputVal, fp_vbs); | |
397 | SET_DBE_FIELD(FP_DE, FP_DE_OFF, outputVal, fp_vbe); | |
398 | DBE_SETREG(fp_de, outputVal); | |
399 | outputVal = 0; | |
400 | SET_DBE_FIELD(FP_HDRV, FP_HDRV_OFF, outputVal, fp_wid); | |
401 | DBE_SETREG(fp_hdrv, outputVal); | |
402 | outputVal = 0; | |
403 | SET_DBE_FIELD(FP_VDRV, FP_VDRV_ON, outputVal, 1); | |
404 | SET_DBE_FIELD(FP_VDRV, FP_VDRV_OFF, outputVal, fp_hgt + 1); | |
405 | DBE_SETREG(fp_vdrv, outputVal); | |
406 | } | |
407 | ||
408 | /* | |
409 | * Set the hardware according to 'par'. | |
410 | */ | |
411 | static int sgivwfb_set_par(struct fb_info *info) | |
412 | { | |
413 | struct sgivw_par *par = info->par; | |
414 | int i, j, htmp, temp; | |
415 | u32 readVal, outputVal; | |
416 | int wholeTilesX, maxPixelsPerTileX; | |
417 | int frmWrite1, frmWrite2, frmWrite3b; | |
418 | struct dbe_timing_info *currentTiming; /* Current Video Timing */ | |
419 | int xpmax, ypmax; // Monitor resolution | |
420 | int bytesPerPixel; // Bytes per pixel | |
421 | ||
422 | currentTiming = &dbeVTimings[par->timing_num]; | |
423 | bytesPerPixel = bytes_per_pixel(info->var.bits_per_pixel); | |
424 | xpmax = currentTiming->width; | |
425 | ypmax = currentTiming->height; | |
426 | ||
427 | /* dbe_InitGraphicsBase(); */ | |
428 | /* Turn on dotclock PLL */ | |
429 | DBE_SETREG(ctrlstat, 0x20000000); | |
430 | ||
431 | dbe_TurnOffDma(par); | |
432 | ||
433 | /* dbe_CalculateScreenParams(); */ | |
434 | maxPixelsPerTileX = 512 / bytesPerPixel; | |
435 | wholeTilesX = xpmax / maxPixelsPerTileX; | |
436 | if (wholeTilesX * maxPixelsPerTileX < xpmax) | |
437 | wholeTilesX++; | |
438 | ||
439 | printk(KERN_DEBUG "sgivwfb: pixPerTile=%d wholeTilesX=%d\n", | |
440 | maxPixelsPerTileX, wholeTilesX); | |
441 | ||
442 | /* dbe_InitGammaMap(); */ | |
443 | udelay(10); | |
444 | ||
445 | for (i = 0; i < 256; i++) { | |
446 | DBE_ISETREG(gmap, i, (i << 24) | (i << 16) | (i << 8)); | |
447 | } | |
448 | ||
449 | /* dbe_TurnOn(); */ | |
450 | DBE_GETREG(vt_xy, readVal); | |
451 | if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1) { | |
452 | DBE_SETREG(vt_xy, 0x00000000); | |
453 | udelay(1); | |
454 | } else | |
455 | dbe_TurnOffDma(par); | |
456 | ||
457 | /* dbe_Initdbe(); */ | |
458 | for (i = 0; i < 256; i++) { | |
459 | for (j = 0; j < 100; j++) { | |
460 | DBE_GETREG(cm_fifo, readVal); | |
461 | if (readVal != 0x00000000) | |
462 | break; | |
463 | else | |
464 | udelay(10); | |
465 | } | |
466 | ||
467 | // DBE_ISETREG(cmap, i, 0x00000000); | |
468 | DBE_ISETREG(cmap, i, (i << 8) | (i << 16) | (i << 24)); | |
469 | } | |
470 | ||
471 | /* dbe_InitFramebuffer(); */ | |
472 | frmWrite1 = 0; | |
473 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_WIDTH_TILE, frmWrite1, | |
474 | wholeTilesX); | |
475 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_RHS, frmWrite1, 0); | |
476 | ||
477 | switch (bytesPerPixel) { | |
478 | case 1: | |
479 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, | |
480 | DBE_FRM_DEPTH_8); | |
481 | break; | |
482 | case 2: | |
483 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, | |
484 | DBE_FRM_DEPTH_16); | |
485 | break; | |
486 | case 4: | |
487 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1, | |
488 | DBE_FRM_DEPTH_32); | |
489 | break; | |
490 | } | |
491 | ||
492 | frmWrite2 = 0; | |
493 | SET_DBE_FIELD(FRM_SIZE_PIXEL, FB_HEIGHT_PIX, frmWrite2, ypmax); | |
494 | ||
495 | // Tell dbe about the framebuffer location and type | |
496 | // XXX What format is the FRM_TILE_PTR?? 64K aligned address? | |
497 | frmWrite3b = 0; | |
498 | SET_DBE_FIELD(FRM_CONTROL, FRM_TILE_PTR, frmWrite3b, | |
499 | sgivwfb_mem_phys >> 9); | |
500 | SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, frmWrite3b, 1); | |
501 | SET_DBE_FIELD(FRM_CONTROL, FRM_LINEAR, frmWrite3b, 1); | |
502 | ||
503 | /* Initialize DIDs */ | |
504 | ||
505 | outputVal = 0; | |
506 | switch (bytesPerPixel) { | |
507 | case 1: | |
508 | SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_I8); | |
509 | break; | |
510 | case 2: | |
511 | SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGBA5); | |
512 | break; | |
513 | case 4: | |
514 | SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGB8); | |
515 | break; | |
516 | } | |
517 | SET_DBE_FIELD(WID, BUF, outputVal, DBE_BMODE_BOTH); | |
518 | ||
519 | for (i = 0; i < 32; i++) { | |
520 | DBE_ISETREG(mode_regs, i, outputVal); | |
521 | } | |
522 | ||
523 | /* dbe_InitTiming(); */ | |
524 | DBE_SETREG(vt_intr01, 0xffffffff); | |
525 | DBE_SETREG(vt_intr23, 0xffffffff); | |
526 | ||
527 | DBE_GETREG(dotclock, readVal); | |
528 | DBE_SETREG(dotclock, readVal & 0xffff); | |
529 | ||
530 | DBE_SETREG(vt_xymax, 0x00000000); | |
531 | outputVal = 0; | |
532 | SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_ON, outputVal, | |
533 | currentTiming->vsync_start); | |
534 | SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_OFF, outputVal, | |
535 | currentTiming->vsync_end); | |
536 | DBE_SETREG(vt_vsync, outputVal); | |
537 | outputVal = 0; | |
538 | SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_ON, outputVal, | |
539 | currentTiming->hsync_start); | |
540 | SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_OFF, outputVal, | |
541 | currentTiming->hsync_end); | |
542 | DBE_SETREG(vt_hsync, outputVal); | |
543 | outputVal = 0; | |
544 | SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_ON, outputVal, | |
545 | currentTiming->vblank_start); | |
546 | SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_OFF, outputVal, | |
547 | currentTiming->vblank_end); | |
548 | DBE_SETREG(vt_vblank, outputVal); | |
549 | outputVal = 0; | |
550 | SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_ON, outputVal, | |
551 | currentTiming->hblank_start); | |
552 | SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_OFF, outputVal, | |
553 | currentTiming->hblank_end - 3); | |
554 | DBE_SETREG(vt_hblank, outputVal); | |
555 | outputVal = 0; | |
556 | SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_ON, outputVal, | |
557 | currentTiming->vblank_start); | |
558 | SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_OFF, outputVal, | |
559 | currentTiming->vblank_end); | |
560 | DBE_SETREG(vt_vcmap, outputVal); | |
561 | outputVal = 0; | |
562 | SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_ON, outputVal, | |
563 | currentTiming->hblank_start); | |
564 | SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_OFF, outputVal, | |
565 | currentTiming->hblank_end - 3); | |
566 | DBE_SETREG(vt_hcmap, outputVal); | |
567 | ||
568 | if (flatpanel_id != -1) | |
569 | sgivwfb_setup_flatpanel(par, currentTiming); | |
570 | ||
571 | outputVal = 0; | |
572 | temp = currentTiming->vblank_start - currentTiming->vblank_end - 1; | |
573 | if (temp > 0) | |
574 | temp = -temp; | |
575 | ||
576 | SET_DBE_FIELD(DID_START_XY, DID_STARTY, outputVal, (u32) temp); | |
577 | if (currentTiming->hblank_end >= 20) | |
578 | SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal, | |
579 | currentTiming->hblank_end - 20); | |
580 | else | |
581 | SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal, | |
582 | currentTiming->htotal - (20 - | |
583 | currentTiming-> | |
584 | hblank_end)); | |
585 | DBE_SETREG(did_start_xy, outputVal); | |
586 | ||
587 | outputVal = 0; | |
588 | SET_DBE_FIELD(CRS_START_XY, CRS_STARTY, outputVal, | |
589 | (u32) (temp + 1)); | |
590 | if (currentTiming->hblank_end >= DBE_CRS_MAGIC) | |
591 | SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal, | |
592 | currentTiming->hblank_end - DBE_CRS_MAGIC); | |
593 | else | |
594 | SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal, | |
595 | currentTiming->htotal - (DBE_CRS_MAGIC - | |
596 | currentTiming-> | |
597 | hblank_end)); | |
598 | DBE_SETREG(crs_start_xy, outputVal); | |
599 | ||
600 | outputVal = 0; | |
601 | SET_DBE_FIELD(VC_START_XY, VC_STARTY, outputVal, (u32) temp); | |
602 | SET_DBE_FIELD(VC_START_XY, VC_STARTX, outputVal, | |
603 | currentTiming->hblank_end - 4); | |
604 | DBE_SETREG(vc_start_xy, outputVal); | |
605 | ||
606 | DBE_SETREG(frm_size_tile, frmWrite1); | |
607 | DBE_SETREG(frm_size_pixel, frmWrite2); | |
608 | ||
609 | outputVal = 0; | |
610 | SET_DBE_FIELD(DOTCLK, M, outputVal, currentTiming->pll_m - 1); | |
611 | SET_DBE_FIELD(DOTCLK, N, outputVal, currentTiming->pll_n - 1); | |
612 | SET_DBE_FIELD(DOTCLK, P, outputVal, currentTiming->pll_p); | |
613 | SET_DBE_FIELD(DOTCLK, RUN, outputVal, 1); | |
614 | DBE_SETREG(dotclock, outputVal); | |
615 | ||
616 | udelay(11 * 1000); | |
617 | ||
618 | DBE_SETREG(vt_vpixen, 0xffffff); | |
619 | DBE_SETREG(vt_hpixen, 0xffffff); | |
620 | ||
621 | outputVal = 0; | |
622 | SET_DBE_FIELD(VT_XYMAX, VT_MAXX, outputVal, currentTiming->htotal); | |
623 | SET_DBE_FIELD(VT_XYMAX, VT_MAXY, outputVal, currentTiming->vtotal); | |
624 | DBE_SETREG(vt_xymax, outputVal); | |
625 | ||
626 | outputVal = frmWrite1; | |
627 | SET_DBE_FIELD(FRM_SIZE_TILE, FRM_FIFO_RESET, outputVal, 1); | |
628 | DBE_SETREG(frm_size_tile, outputVal); | |
629 | DBE_SETREG(frm_size_tile, frmWrite1); | |
630 | ||
631 | outputVal = 0; | |
632 | SET_DBE_FIELD(OVR_WIDTH_TILE, OVR_FIFO_RESET, outputVal, 1); | |
633 | DBE_SETREG(ovr_width_tile, outputVal); | |
634 | DBE_SETREG(ovr_width_tile, 0); | |
635 | ||
636 | DBE_SETREG(frm_control, frmWrite3b); | |
637 | DBE_SETREG(did_control, 0); | |
638 | ||
639 | // Wait for dbe to take frame settings | |
640 | for (i = 0; i < 100000; i++) { | |
641 | DBE_GETREG(frm_inhwctrl, readVal); | |
642 | if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) != | |
643 | 0) | |
644 | break; | |
645 | else | |
646 | udelay(1); | |
647 | } | |
648 | ||
649 | if (i == 100000) | |
650 | printk(KERN_INFO | |
651 | "sgivwfb: timeout waiting for frame DMA enable.\n"); | |
652 | ||
653 | outputVal = 0; | |
654 | htmp = currentTiming->hblank_end - 19; | |
655 | if (htmp < 0) | |
656 | htmp += currentTiming->htotal; /* allow blank to wrap around */ | |
657 | SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_ON, outputVal, htmp); | |
658 | SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_OFF, outputVal, | |
659 | ((htmp + currentTiming->width - | |
660 | 2) % currentTiming->htotal)); | |
661 | DBE_SETREG(vt_hpixen, outputVal); | |
662 | ||
663 | outputVal = 0; | |
664 | SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_OFF, outputVal, | |
665 | currentTiming->vblank_start); | |
666 | SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_ON, outputVal, | |
667 | currentTiming->vblank_end); | |
668 | DBE_SETREG(vt_vpixen, outputVal); | |
669 | ||
670 | // Turn off mouse cursor | |
671 | par->regs->crs_ctl = 0; | |
672 | ||
673 | // XXX What's this section for?? | |
674 | DBE_GETREG(ctrlstat, readVal); | |
675 | readVal &= 0x02000000; | |
676 | ||
677 | if (readVal != 0) { | |
678 | DBE_SETREG(ctrlstat, 0x30000000); | |
679 | } | |
680 | return 0; | |
681 | } | |
682 | ||
683 | /* | |
684 | * Set a single color register. The values supplied are already | |
685 | * rounded down to the hardware's capabilities (according to the | |
686 | * entries in the var structure). Return != 0 for invalid regno. | |
687 | */ | |
688 | ||
689 | static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green, | |
690 | u_int blue, u_int transp, | |
691 | struct fb_info *info) | |
692 | { | |
693 | struct sgivw_par *par = (struct sgivw_par *) info->par; | |
694 | ||
695 | if (regno > 255) | |
696 | return 1; | |
697 | red >>= 8; | |
698 | green >>= 8; | |
699 | blue >>= 8; | |
700 | ||
701 | /* wait for the color map FIFO to have a free entry */ | |
702 | while (par->cmap_fifo == 0) | |
703 | par->cmap_fifo = par->regs->cm_fifo; | |
704 | ||
705 | par->regs->cmap[regno] = (red << 24) | (green << 16) | (blue << 8); | |
706 | par->cmap_fifo--; /* assume FIFO is filling up */ | |
707 | return 0; | |
708 | } | |
709 | ||
710 | static int sgivwfb_mmap(struct fb_info *info, struct file *file, | |
711 | struct vm_area_struct *vma) | |
712 | { | |
713 | unsigned long size = vma->vm_end - vma->vm_start; | |
714 | unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; | |
715 | ||
716 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
717 | return -EINVAL; | |
718 | if (offset + size > sgivwfb_mem_size) | |
719 | return -EINVAL; | |
720 | offset += sgivwfb_mem_phys; | |
721 | pgprot_val(vma->vm_page_prot) = | |
722 | pgprot_val(vma->vm_page_prot) | _PAGE_PCD; | |
723 | vma->vm_flags |= VM_IO; | |
724 | if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT, | |
725 | size, vma->vm_page_prot)) | |
726 | return -EAGAIN; | |
727 | vma->vm_file = file; | |
728 | printk(KERN_DEBUG "sgivwfb: mmap framebuffer P(%lx)->V(%lx)\n", | |
729 | offset, vma->vm_start); | |
730 | return 0; | |
731 | } | |
732 | ||
733 | int __init sgivwfb_setup(char *options) | |
734 | { | |
735 | char *this_opt; | |
736 | ||
737 | if (!options || !*options) | |
738 | return 0; | |
739 | ||
740 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
741 | if (!strncmp(this_opt, "monitor:", 8)) { | |
742 | if (!strncmp(this_opt + 8, "crt", 3)) | |
743 | flatpanel_id = -1; | |
744 | else if (!strncmp(this_opt + 8, "1600sw", 6)) | |
745 | flatpanel_id = FLATPANEL_SGI_1600SW; | |
746 | } | |
747 | } | |
748 | return 0; | |
749 | } | |
750 | ||
751 | /* | |
752 | * Initialisation | |
753 | */ | |
754 | static void sgivwfb_release(struct device *device) | |
755 | { | |
756 | } | |
757 | ||
758 | static int __init sgivwfb_probe(struct device *device) | |
759 | { | |
760 | struct platform_device *dev = to_platform_device(device); | |
761 | struct sgivw_par *par; | |
762 | struct fb_info *info; | |
763 | char *monitor; | |
764 | ||
765 | info = framebuffer_alloc(sizeof(struct sgivw_par) + sizeof(u32) * 256, &dev->dev); | |
766 | if (!info) | |
767 | return -ENOMEM; | |
768 | par = info->par; | |
769 | ||
770 | if (!request_mem_region(DBE_REG_PHYS, DBE_REG_SIZE, "sgivwfb")) { | |
771 | printk(KERN_ERR "sgivwfb: couldn't reserve mmio region\n"); | |
772 | framebuffer_release(info); | |
773 | return -EBUSY; | |
774 | } | |
775 | ||
776 | par->regs = (struct asregs *) ioremap_nocache(DBE_REG_PHYS, DBE_REG_SIZE); | |
777 | if (!par->regs) { | |
778 | printk(KERN_ERR "sgivwfb: couldn't ioremap registers\n"); | |
779 | goto fail_ioremap_regs; | |
780 | } | |
781 | ||
782 | mtrr_add(sgivwfb_mem_phys, sgivwfb_mem_size, MTRR_TYPE_WRCOMB, 1); | |
783 | ||
784 | sgivwfb_fix.smem_start = sgivwfb_mem_phys; | |
785 | sgivwfb_fix.smem_len = sgivwfb_mem_size; | |
786 | sgivwfb_fix.ywrapstep = ywrap; | |
787 | sgivwfb_fix.ypanstep = ypan; | |
788 | ||
789 | info->fix = sgivwfb_fix; | |
790 | ||
791 | switch (flatpanel_id) { | |
792 | case FLATPANEL_SGI_1600SW: | |
793 | info->var = sgivwfb_var1600sw; | |
794 | monitor = "SGI 1600SW flatpanel"; | |
795 | break; | |
796 | default: | |
797 | info->var = sgivwfb_var; | |
798 | monitor = "CRT"; | |
799 | } | |
800 | ||
801 | printk(KERN_INFO "sgivwfb: %s monitor selected\n", monitor); | |
802 | ||
803 | info->fbops = &sgivwfb_ops; | |
804 | info->pseudo_palette = (void *) (par + 1); | |
805 | info->flags = FBINFO_DEFAULT; | |
806 | ||
807 | info->screen_base = ioremap_nocache((unsigned long) sgivwfb_mem_phys, sgivwfb_mem_size); | |
808 | if (!info->screen_base) { | |
809 | printk(KERN_ERR "sgivwfb: couldn't ioremap screen_base\n"); | |
810 | goto fail_ioremap_fbmem; | |
811 | } | |
812 | ||
813 | if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) | |
814 | goto fail_color_map; | |
815 | ||
816 | if (register_framebuffer(info) < 0) { | |
817 | printk(KERN_ERR "sgivwfb: couldn't register framebuffer\n"); | |
818 | goto fail_register_framebuffer; | |
819 | } | |
820 | ||
821 | dev_set_drvdata(&dev->dev, info); | |
822 | ||
823 | printk(KERN_INFO "fb%d: SGI DBE frame buffer device, using %ldK of video memory at %#lx\n", | |
824 | info->node, sgivwfb_mem_size >> 10, sgivwfb_mem_phys); | |
825 | return 0; | |
826 | ||
827 | fail_register_framebuffer: | |
828 | fb_dealloc_cmap(&info->cmap); | |
829 | fail_color_map: | |
830 | iounmap((char *) info->screen_base); | |
831 | fail_ioremap_fbmem: | |
832 | iounmap(par->regs); | |
833 | fail_ioremap_regs: | |
834 | release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE); | |
835 | framebuffer_release(info); | |
836 | return -ENXIO; | |
837 | } | |
838 | ||
839 | static int sgivwfb_remove(struct device *device) | |
840 | { | |
841 | struct fb_info *info = dev_get_drvdata(device); | |
842 | ||
843 | if (info) { | |
844 | struct sgivw_par *par = info->par; | |
845 | ||
846 | unregister_framebuffer(info); | |
847 | dbe_TurnOffDma(par); | |
848 | iounmap(par->regs); | |
849 | iounmap(info->screen_base); | |
850 | release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE); | |
851 | } | |
852 | return 0; | |
853 | } | |
854 | ||
855 | static struct device_driver sgivwfb_driver = { | |
856 | .name = "sgivwfb", | |
857 | .bus = &platform_bus_type, | |
858 | .probe = sgivwfb_probe, | |
859 | .remove = sgivwfb_remove, | |
860 | }; | |
861 | ||
862 | static struct platform_device sgivwfb_device = { | |
863 | .name = "sgivwfb", | |
864 | .id = 0, | |
865 | .dev = { | |
866 | .release = sgivwfb_release, | |
867 | } | |
868 | }; | |
869 | ||
870 | int __init sgivwfb_init(void) | |
871 | { | |
872 | int ret; | |
873 | ||
874 | #ifndef MODULE | |
875 | char *option = NULL; | |
876 | ||
877 | if (fb_get_options("sgivwfb", &option)) | |
878 | return -ENODEV; | |
879 | sgivwfb_setup(option); | |
880 | #endif | |
881 | ret = driver_register(&sgivwfb_driver); | |
882 | if (!ret) { | |
883 | ret = platform_device_register(&sgivwfb_device); | |
884 | if (ret) | |
885 | driver_unregister(&sgivwfb_driver); | |
886 | } | |
887 | return ret; | |
888 | } | |
889 | ||
890 | module_init(sgivwfb_init); | |
891 | ||
892 | #ifdef MODULE | |
893 | MODULE_LICENSE("GPL"); | |
894 | ||
895 | static void __exit sgivwfb_exit(void) | |
896 | { | |
897 | platform_device_unregister(&sgivwfb_device); | |
898 | driver_unregister(&sgivwfb_driver); | |
899 | } | |
900 | ||
901 | module_exit(sgivwfb_exit); | |
902 | ||
903 | #endif /* MODULE */ |