1 /*
2 * linux/drivers/video/ps3fb.c -- PS3 GPU frame buffer device
3 *
4 * Copyright (C) 2006 Sony Computer Entertainment Inc.
5 * Copyright 2006, 2007 Sony Corporation
6 *
7 * This file is based on :
8 *
9 * linux/drivers/video/vfb.c -- Virtual frame buffer device
10 *
11 * Copyright (C) 2002 James Simmons
12 *
13 * Copyright (C) 1997 Geert Uytterhoeven
14 *
15 * This file is subject to the terms and conditions of the GNU General Public
16 * License. See the file COPYING in the main directory of this archive for
17 * more details.
18 */
19
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/string.h>
24 #include <linux/mm.h>
25 #include <linux/interrupt.h>
26 #include <linux/console.h>
27 #include <linux/ioctl.h>
28 #include <linux/kthread.h>
29 #include <linux/freezer.h>
30 #include <linux/uaccess.h>
31 #include <linux/fb.h>
32 #include <linux/fbcon.h>
33 #include <linux/init.h>
34
35 #include <asm/cell-regs.h>
36 #include <asm/lv1call.h>
37 #include <asm/ps3av.h>
38 #include <asm/ps3fb.h>
39 #include <asm/ps3.h>
40 #include <asm/ps3gpu.h>
41
42
43 #define DEVICE_NAME "ps3fb"
44
45 #define GPU_CMD_BUF_SIZE (2 * 1024 * 1024)
46 #define GPU_FB_START (64 * 1024)
47 #define GPU_IOIF (0x0d000000UL)
48 #define GPU_ALIGN_UP(x) ALIGN((x), 64)
49 #define GPU_MAX_LINE_LENGTH (65536 - 64)
50
51 #define GPU_INTR_STATUS_VSYNC_0 0 /* vsync on head A */
52 #define GPU_INTR_STATUS_VSYNC_1 1 /* vsync on head B */
53 #define GPU_INTR_STATUS_FLIP_0 3 /* flip head A */
54 #define GPU_INTR_STATUS_FLIP_1 4 /* flip head B */
55 #define GPU_INTR_STATUS_QUEUE_0 5 /* queue head A */
56 #define GPU_INTR_STATUS_QUEUE_1 6 /* queue head B */
57
58 #define GPU_DRIVER_INFO_VERSION 0x211
59
60 /* gpu internals */
61 struct display_head {
62 u64 be_time_stamp;
63 u32 status;
64 u32 offset;
65 u32 res1;
66 u32 res2;
67 u32 field;
68 u32 reserved1;
69
70 u64 res3;
71 u32 raster;
72
73 u64 vblank_count;
74 u32 field_vsync;
75 u32 reserved2;
76 };
77
78 struct gpu_irq {
79 u32 irq_outlet;
80 u32 status;
81 u32 mask;
82 u32 video_cause;
83 u32 graph_cause;
84 u32 user_cause;
85
86 u32 res1;
87 u64 res2;
88
89 u32 reserved[4];
90 };
91
92 struct gpu_driver_info {
93 u32 version_driver;
94 u32 version_gpu;
95 u32 memory_size;
96 u32 hardware_channel;
97
98 u32 nvcore_frequency;
99 u32 memory_frequency;
100
101 u32 reserved[1063];
102 struct display_head display_head[8];
103 struct gpu_irq irq;
104 };
105
106 struct ps3fb_priv {
107 unsigned int irq_no;
108
109 u64 context_handle, memory_handle;
110 struct gpu_driver_info *dinfo;
111
112 u64 vblank_count; /* frame count */
113 wait_queue_head_t wait_vsync;
114
115 atomic_t ext_flip; /* on/off flip with vsync */
116 atomic_t f_count; /* fb_open count */
117 int is_blanked;
118 int is_kicked;
119 struct task_struct *task;
120 };
121 static struct ps3fb_priv ps3fb;
122
123 struct ps3fb_par {
124 u32 pseudo_palette[16];
125 int mode_id, new_mode_id;
126 unsigned int num_frames; /* num of frame buffers */
127 unsigned int width;
128 unsigned int height;
129 unsigned int ddr_line_length;
130 unsigned int ddr_frame_size;
131 unsigned int xdr_frame_size;
132 unsigned int full_offset; /* start of fullscreen DDR fb */
133 unsigned int fb_offset; /* start of actual DDR fb */
134 unsigned int pan_offset;
135 };
136
137
138 #define FIRST_NATIVE_MODE_INDEX 10
139
140 static const struct fb_videomode ps3fb_modedb[] = {
141 /* 60 Hz broadcast modes (modes "1" to "5") */
142 {
143 /* 480i */
144 "480i", 60, 576, 384, 74074, 130, 89, 78, 57, 63, 6,
145 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
146 }, {
147 /* 480p */
148 "480p", 60, 576, 384, 37037, 130, 89, 78, 57, 63, 6,
149 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
150 }, {
151 /* 720p */
152 "720p", 60, 1124, 644, 13481, 298, 148, 57, 44, 80, 5,
153 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
154 }, {
155 /* 1080i */
156 "1080i", 60, 1688, 964, 13481, 264, 160, 94, 62, 88, 5,
157 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
158 }, {
159 /* 1080p */
160 "1080p", 60, 1688, 964, 6741, 264, 160, 94, 62, 88, 5,
161 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
162 },
163
164 /* 50 Hz broadcast modes (modes "6" to "10") */
165 {
166 /* 576i */
167 "576i", 50, 576, 460, 74074, 142, 83, 97, 63, 63, 5,
168 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
169 }, {
170 /* 576p */
171 "576p", 50, 576, 460, 37037, 142, 83, 97, 63, 63, 5,
172 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
173 }, {
174 /* 720p */
175 "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
176 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
177 }, {
178 /* 1080i */
179 "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
180 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
181 }, {
182 /* 1080p */
183 "1080p", 50, 1688, 964, 6734, 264, 600, 94, 62, 88, 5,
184 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
185 },
186
187 [FIRST_NATIVE_MODE_INDEX] =
188 /* 60 Hz broadcast modes (full resolution versions of modes "1" to "5") */
189 {
190 /* 480if */
191 "480if", 60, 720, 480, 74074, 58, 17, 30, 9, 63, 6,
192 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
193 }, {
194 /* 480pf */
195 "480pf", 60, 720, 480, 37037, 58, 17, 30, 9, 63, 6,
196 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
197 }, {
198 /* 720pf */
199 "720pf", 60, 1280, 720, 13481, 220, 70, 19, 6, 80, 5,
200 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
201 }, {
202 /* 1080if */
203 "1080if", 60, 1920, 1080, 13481, 148, 44, 36, 4, 88, 5,
204 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
205 }, {
206 /* 1080pf */
207 "1080pf", 60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
208 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
209 },
210
211 /* 50 Hz broadcast modes (full resolution versions of modes "6" to "10") */
212 {
213 /* 576if */
214 "576if", 50, 720, 576, 74074, 70, 11, 39, 5, 63, 5,
215 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
216 }, {
217 /* 576pf */
218 "576pf", 50, 720, 576, 37037, 70, 11, 39, 5, 63, 5,
219 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
220 }, {
221 /* 720pf */
222 "720pf", 50, 1280, 720, 13468, 220, 400, 19, 6, 80, 5,
223 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
224 }, {
225 /* 1080if */
226 "1080if", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
227 FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
228 }, {
229 /* 1080pf */
230 "1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
231 FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
232 },
233
234 /* VESA modes (modes "11" to "13") */
235 {
236 /* WXGA */
237 "wxga", 60, 1280, 768, 12924, 160, 24, 29, 3, 136, 6,
238 0, FB_VMODE_NONINTERLACED,
239 FB_MODE_IS_VESA
240 }, {
241 /* SXGA */
242 "sxga", 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
243 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED,
244 FB_MODE_IS_VESA
245 }, {
246 /* WUXGA */
247 "wuxga", 60, 1920, 1200, 6494, 80, 48, 26, 3, 32, 6,
248 FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED,
249 FB_MODE_IS_VESA
250 }
251 };
252
253
254 #define HEAD_A
255 #define HEAD_B
256
257 #define BPP 4 /* number of bytes per pixel */
258
259
260 static int ps3fb_mode;
261 module_param(ps3fb_mode, int, 0);
262
263 static char *mode_option;
264
ps3fb_cmp_mode(const struct fb_videomode * vmode,const struct fb_var_screeninfo * var)265 static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
266 const struct fb_var_screeninfo *var)
267 {
268 long xres, yres, left_margin, right_margin, upper_margin, lower_margin;
269 long dx, dy;
270
271 /* maximum values */
272 if (var->xres > vmode->xres || var->yres > vmode->yres ||
273 var->pixclock > vmode->pixclock ||
274 var->hsync_len > vmode->hsync_len ||
275 var->vsync_len > vmode->vsync_len)
276 return -1;
277
278 /* progressive/interlaced must match */
279 if ((var->vmode & FB_VMODE_MASK) != vmode->vmode)
280 return -1;
281
282 /* minimum resolution */
283 xres = max(var->xres, 1U);
284 yres = max(var->yres, 1U);
285
286 /* minimum margins */
287 left_margin = max(var->left_margin, vmode->left_margin);
288 right_margin = max(var->right_margin, vmode->right_margin);
289 upper_margin = max(var->upper_margin, vmode->upper_margin);
290 lower_margin = max(var->lower_margin, vmode->lower_margin);
291
292 /* resolution + margins may not exceed native parameters */
293 dx = ((long)vmode->left_margin + (long)vmode->xres +
294 (long)vmode->right_margin) -
295 (left_margin + xres + right_margin);
296 if (dx < 0)
297 return -1;
298
299 dy = ((long)vmode->upper_margin + (long)vmode->yres +
300 (long)vmode->lower_margin) -
301 (upper_margin + yres + lower_margin);
302 if (dy < 0)
303 return -1;
304
305 /* exact match */
306 if (!dx && !dy)
307 return 0;
308
309 /* resolution difference */
310 return (vmode->xres - xres) * (vmode->yres - yres);
311 }
312
ps3fb_native_vmode(enum ps3av_mode_num id)313 static const struct fb_videomode *ps3fb_native_vmode(enum ps3av_mode_num id)
314 {
315 return &ps3fb_modedb[FIRST_NATIVE_MODE_INDEX + id - 1];
316 }
317
ps3fb_vmode(int id)318 static const struct fb_videomode *ps3fb_vmode(int id)
319 {
320 u32 mode = id & PS3AV_MODE_MASK;
321
322 if (mode < PS3AV_MODE_480I || mode > PS3AV_MODE_WUXGA)
323 return NULL;
324
325 if (mode <= PS3AV_MODE_1080P50 && !(id & PS3AV_MODE_FULL)) {
326 /* Non-fullscreen broadcast mode */
327 return &ps3fb_modedb[mode - 1];
328 }
329
330 return ps3fb_native_vmode(mode);
331 }
332
ps3fb_find_mode(struct fb_var_screeninfo * var,u32 * ddr_line_length,u32 * xdr_line_length)333 static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
334 u32 *ddr_line_length, u32 *xdr_line_length)
335 {
336 unsigned int id, best_id;
337 int diff, best_diff;
338 const struct fb_videomode *vmode;
339 long gap;
340
341 best_id = 0;
342 best_diff = INT_MAX;
343 pr_debug("%s: wanted %u [%u] %u x %u [%u] %u\n", __func__,
344 var->left_margin, var->xres, var->right_margin,
345 var->upper_margin, var->yres, var->lower_margin);
346 for (id = PS3AV_MODE_480I; id <= PS3AV_MODE_WUXGA; id++) {
347 vmode = ps3fb_native_vmode(id);
348 diff = ps3fb_cmp_mode(vmode, var);
349 pr_debug("%s: mode %u: %u [%u] %u x %u [%u] %u: diff = %d\n",
350 __func__, id, vmode->left_margin, vmode->xres,
351 vmode->right_margin, vmode->upper_margin,
352 vmode->yres, vmode->lower_margin, diff);
353 if (diff < 0)
354 continue;
355 if (diff < best_diff) {
356 best_id = id;
357 if (!diff)
358 break;
359 best_diff = diff;
360 }
361 }
362
363 if (!best_id) {
364 pr_debug("%s: no suitable mode found\n", __func__);
365 return 0;
366 }
367
368 id = best_id;
369 vmode = ps3fb_native_vmode(id);
370
371 *ddr_line_length = vmode->xres * BPP;
372
373 /* minimum resolution */
374 if (!var->xres)
375 var->xres = 1;
376 if (!var->yres)
377 var->yres = 1;
378
379 /* minimum virtual resolution */
380 if (var->xres_virtual < var->xres)
381 var->xres_virtual = var->xres;
382 if (var->yres_virtual < var->yres)
383 var->yres_virtual = var->yres;
384
385 /* minimum margins */
386 if (var->left_margin < vmode->left_margin)
387 var->left_margin = vmode->left_margin;
388 if (var->right_margin < vmode->right_margin)
389 var->right_margin = vmode->right_margin;
390 if (var->upper_margin < vmode->upper_margin)
391 var->upper_margin = vmode->upper_margin;
392 if (var->lower_margin < vmode->lower_margin)
393 var->lower_margin = vmode->lower_margin;
394
395 /* extra margins */
396 gap = ((long)vmode->left_margin + (long)vmode->xres +
397 (long)vmode->right_margin) -
398 ((long)var->left_margin + (long)var->xres +
399 (long)var->right_margin);
400 if (gap > 0) {
401 var->left_margin += gap/2;
402 var->right_margin += (gap+1)/2;
403 pr_debug("%s: rounded up H to %u [%u] %u\n", __func__,
404 var->left_margin, var->xres, var->right_margin);
405 }
406
407 gap = ((long)vmode->upper_margin + (long)vmode->yres +
408 (long)vmode->lower_margin) -
409 ((long)var->upper_margin + (long)var->yres +
410 (long)var->lower_margin);
411 if (gap > 0) {
412 var->upper_margin += gap/2;
413 var->lower_margin += (gap+1)/2;
414 pr_debug("%s: rounded up V to %u [%u] %u\n", __func__,
415 var->upper_margin, var->yres, var->lower_margin);
416 }
417
418 /* fixed fields */
419 var->pixclock = vmode->pixclock;
420 var->hsync_len = vmode->hsync_len;
421 var->vsync_len = vmode->vsync_len;
422 var->sync = vmode->sync;
423
424 if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
425 *xdr_line_length = GPU_ALIGN_UP(var->xres_virtual * BPP);
426 if (*xdr_line_length > GPU_MAX_LINE_LENGTH)
427 *xdr_line_length = GPU_MAX_LINE_LENGTH;
428 } else
429 *xdr_line_length = *ddr_line_length;
430
431 if (vmode->sync & FB_SYNC_BROADCAST) {
432 /* Full broadcast modes have the full mode bit set */
433 if (vmode->xres == var->xres && vmode->yres == var->yres)
434 id |= PS3AV_MODE_FULL;
435 }
436
437 pr_debug("%s: mode %u\n", __func__, id);
438 return id;
439 }
440
ps3fb_sync_image(struct device * dev,u64 frame_offset,u64 dst_offset,u64 src_offset,u32 width,u32 height,u32 dst_line_length,u32 src_line_length)441 static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
442 u64 dst_offset, u64 src_offset, u32 width,
443 u32 height, u32 dst_line_length,
444 u32 src_line_length)
445 {
446 int status;
447 u64 line_length;
448
449 line_length = dst_line_length;
450 if (src_line_length != dst_line_length)
451 line_length |= (u64)src_line_length << 32;
452
453 src_offset += GPU_FB_START;
454
455 mutex_lock(&ps3_gpu_mutex);
456 status = lv1_gpu_fb_blit(ps3fb.context_handle, dst_offset,
457 GPU_IOIF + src_offset,
458 L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
459 (width << 16) | height,
460 line_length);
461 mutex_unlock(&ps3_gpu_mutex);
462
463 if (status)
464 dev_err(dev, "%s: lv1_gpu_fb_blit failed: %d\n", __func__,
465 status);
466 #ifdef HEAD_A
467 status = lv1_gpu_display_flip(ps3fb.context_handle, 0, frame_offset);
468 if (status)
469 dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
470 status);
471 #endif
472 #ifdef HEAD_B
473 status = lv1_gpu_display_flip(ps3fb.context_handle, 1, frame_offset);
474 if (status)
475 dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
476 status);
477 #endif
478 }
479
ps3fb_sync(struct fb_info * info,u32 frame)480 static int ps3fb_sync(struct fb_info *info, u32 frame)
481 {
482 struct ps3fb_par *par = info->par;
483 int error = 0;
484 u64 ddr_base, xdr_base;
485
486 if (frame > par->num_frames - 1) {
487 dev_dbg(info->device, "%s: invalid frame number (%u)\n",
488 __func__, frame);
489 error = -EINVAL;
490 goto out;
491 }
492
493 xdr_base = frame * par->xdr_frame_size;
494 ddr_base = frame * par->ddr_frame_size;
495
496 ps3fb_sync_image(info->device, ddr_base + par->full_offset,
497 ddr_base + par->fb_offset, xdr_base + par->pan_offset,
498 par->width, par->height, par->ddr_line_length,
499 info->fix.line_length);
500
501 out:
502 return error;
503 }
504
ps3fb_open(struct fb_info * info,int user)505 static int ps3fb_open(struct fb_info *info, int user)
506 {
507 atomic_inc(&ps3fb.f_count);
508 return 0;
509 }
510
ps3fb_release(struct fb_info * info,int user)511 static int ps3fb_release(struct fb_info *info, int user)
512 {
513 if (atomic_dec_and_test(&ps3fb.f_count)) {
514 if (atomic_read(&ps3fb.ext_flip)) {
515 atomic_set(&ps3fb.ext_flip, 0);
516 if (console_trylock()) {
517 ps3fb_sync(info, 0); /* single buffer */
518 console_unlock();
519 }
520 }
521 }
522 return 0;
523 }
524
525 /*
526 * Setting the video mode has been split into two parts.
527 * First part, xxxfb_check_var, must not write anything
528 * to hardware, it should only verify and adjust var.
529 * This means it doesn't alter par but it does use hardware
530 * data from it to check this var.
531 */
532
ps3fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)533 static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
534 {
535 u32 xdr_line_length, ddr_line_length;
536 int mode;
537
538 mode = ps3fb_find_mode(var, &ddr_line_length, &xdr_line_length);
539 if (!mode)
540 return -EINVAL;
541
542 /* Virtual screen */
543 if (var->xres_virtual > xdr_line_length / BPP) {
544 dev_dbg(info->device,
545 "Horizontal virtual screen size too large\n");
546 return -EINVAL;
547 }
548
549 if (var->xoffset + var->xres > var->xres_virtual ||
550 var->yoffset + var->yres > var->yres_virtual) {
551 dev_dbg(info->device, "panning out-of-range\n");
552 return -EINVAL;
553 }
554
555 /* We support ARGB8888 only */
556 if (var->bits_per_pixel > 32 || var->grayscale ||
557 var->red.offset > 16 || var->green.offset > 8 ||
558 var->blue.offset > 0 || var->transp.offset > 24 ||
559 var->red.length > 8 || var->green.length > 8 ||
560 var->blue.length > 8 || var->transp.length > 8 ||
561 var->red.msb_right || var->green.msb_right ||
562 var->blue.msb_right || var->transp.msb_right || var->nonstd) {
563 dev_dbg(info->device, "We support ARGB8888 only\n");
564 return -EINVAL;
565 }
566
567 var->bits_per_pixel = 32;
568 var->red.offset = 16;
569 var->green.offset = 8;
570 var->blue.offset = 0;
571 var->transp.offset = 24;
572 var->red.length = 8;
573 var->green.length = 8;
574 var->blue.length = 8;
575 var->transp.length = 8;
576 var->red.msb_right = 0;
577 var->green.msb_right = 0;
578 var->blue.msb_right = 0;
579 var->transp.msb_right = 0;
580
581 /* Rotation is not supported */
582 if (var->rotate) {
583 dev_dbg(info->device, "Rotation is not supported\n");
584 return -EINVAL;
585 }
586
587 /* Memory limit */
588 if (var->yres_virtual * xdr_line_length > info->fix.smem_len) {
589 dev_dbg(info->device, "Not enough memory\n");
590 return -ENOMEM;
591 }
592
593 var->height = -1;
594 var->width = -1;
595
596 return 0;
597 }
598
599 /*
600 * This routine actually sets the video mode.
601 */
602
ps3fb_set_par(struct fb_info * info)603 static int ps3fb_set_par(struct fb_info *info)
604 {
605 struct ps3fb_par *par = info->par;
606 unsigned int mode, ddr_line_length, xdr_line_length, lines, maxlines;
607 unsigned int ddr_xoff, ddr_yoff, offset;
608 const struct fb_videomode *vmode;
609 u64 dst;
610
611 mode = ps3fb_find_mode(&info->var, &ddr_line_length, &xdr_line_length);
612 if (!mode)
613 return -EINVAL;
614
615 vmode = ps3fb_native_vmode(mode & PS3AV_MODE_MASK);
616
617 info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
618 info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
619 info->fix.line_length = xdr_line_length;
620
621 par->ddr_line_length = ddr_line_length;
622 par->ddr_frame_size = vmode->yres * ddr_line_length;
623 par->xdr_frame_size = info->var.yres_virtual * xdr_line_length;
624
625 par->num_frames = info->fix.smem_len /
626 max(par->ddr_frame_size, par->xdr_frame_size);
627
628 /* Keep the special bits we cannot set using fb_var_screeninfo */
629 par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode;
630
631 par->width = info->var.xres;
632 par->height = info->var.yres;
633
634 /* Start of the virtual frame buffer (relative to fullscreen) */
635 ddr_xoff = info->var.left_margin - vmode->left_margin;
636 ddr_yoff = info->var.upper_margin - vmode->upper_margin;
637 offset = ddr_yoff * ddr_line_length + ddr_xoff * BPP;
638
639 par->fb_offset = GPU_ALIGN_UP(offset);
640 par->full_offset = par->fb_offset - offset;
641 par->pan_offset = info->var.yoffset * xdr_line_length +
642 info->var.xoffset * BPP;
643
644 if (par->new_mode_id != par->mode_id) {
645 if (ps3av_set_video_mode(par->new_mode_id)) {
646 par->new_mode_id = par->mode_id;
647 return -EINVAL;
648 }
649 par->mode_id = par->new_mode_id;
650 }
651
652 /* Clear XDR frame buffer memory */
653 memset(info->screen_buffer, 0, info->fix.smem_len);
654
655 /* Clear DDR frame buffer memory */
656 lines = vmode->yres * par->num_frames;
657 if (par->full_offset)
658 lines++;
659 maxlines = info->fix.smem_len / ddr_line_length;
660 for (dst = 0; lines; dst += maxlines * ddr_line_length) {
661 unsigned int l = min(lines, maxlines);
662 ps3fb_sync_image(info->device, 0, dst, 0, vmode->xres, l,
663 ddr_line_length, ddr_line_length);
664 lines -= l;
665 }
666
667 return 0;
668 }
669
670 /*
671 * Set a single color register. The values supplied are already
672 * rounded down to the hardware's capabilities (according to the
673 * entries in the var structure). Return != 0 for invalid regno.
674 */
675
ps3fb_setcolreg(unsigned int regno,unsigned int red,unsigned int green,unsigned int blue,unsigned int transp,struct fb_info * info)676 static int ps3fb_setcolreg(unsigned int regno, unsigned int red,
677 unsigned int green, unsigned int blue,
678 unsigned int transp, struct fb_info *info)
679 {
680 if (regno >= 16)
681 return 1;
682
683 red >>= 8;
684 green >>= 8;
685 blue >>= 8;
686 transp >>= 8;
687
688 ((u32 *)info->pseudo_palette)[regno] = transp << 24 | red << 16 |
689 green << 8 | blue;
690 return 0;
691 }
692
ps3fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)693 static int ps3fb_pan_display(struct fb_var_screeninfo *var,
694 struct fb_info *info)
695 {
696 struct ps3fb_par *par = info->par;
697
698 par->pan_offset = var->yoffset * info->fix.line_length +
699 var->xoffset * BPP;
700 return 0;
701 }
702
703 /*
704 * As we have a virtual frame buffer, we need our own mmap function
705 */
706
ps3fb_mmap(struct fb_info * info,struct vm_area_struct * vma)707 static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
708 {
709 int r;
710
711 vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot);
712
713 r = vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
714
715 dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
716 info->fix.smem_start + (vma->vm_pgoff << PAGE_SHIFT),
717 vma->vm_start);
718
719 return r;
720 }
721
722 /*
723 * Blank the display
724 */
725
ps3fb_blank(int blank,struct fb_info * info)726 static int ps3fb_blank(int blank, struct fb_info *info)
727 {
728 int retval;
729
730 dev_dbg(info->device, "%s: blank:%d\n", __func__, blank);
731 switch (blank) {
732 case FB_BLANK_POWERDOWN:
733 case FB_BLANK_HSYNC_SUSPEND:
734 case FB_BLANK_VSYNC_SUSPEND:
735 case FB_BLANK_NORMAL:
736 retval = ps3av_video_mute(1); /* mute on */
737 if (!retval)
738 ps3fb.is_blanked = 1;
739 break;
740
741 default: /* unblank */
742 retval = ps3av_video_mute(0); /* mute off */
743 if (!retval)
744 ps3fb.is_blanked = 0;
745 break;
746 }
747 return retval;
748 }
749
ps3fb_get_vblank(struct fb_vblank * vblank)750 static int ps3fb_get_vblank(struct fb_vblank *vblank)
751 {
752 memset(vblank, 0, sizeof(*vblank));
753 vblank->flags = FB_VBLANK_HAVE_VSYNC;
754 return 0;
755 }
756
ps3fb_wait_for_vsync(u32 crtc)757 static int ps3fb_wait_for_vsync(u32 crtc)
758 {
759 int ret;
760 u64 count;
761
762 count = ps3fb.vblank_count;
763 ret = wait_event_interruptible_timeout(ps3fb.wait_vsync,
764 count != ps3fb.vblank_count,
765 HZ / 10);
766 if (!ret)
767 return -ETIMEDOUT;
768
769 return 0;
770 }
771
772
773 /*
774 * ioctl
775 */
776
ps3fb_ioctl(struct fb_info * info,unsigned int cmd,unsigned long arg)777 static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
778 unsigned long arg)
779 {
780 void __user *argp = (void __user *)arg;
781 u32 val;
782 int retval = -EFAULT;
783
784 switch (cmd) {
785 case FBIOGET_VBLANK:
786 {
787 struct fb_vblank vblank;
788 dev_dbg(info->device, "FBIOGET_VBLANK:\n");
789 retval = ps3fb_get_vblank(&vblank);
790 if (retval)
791 break;
792
793 if (copy_to_user(argp, &vblank, sizeof(vblank)))
794 retval = -EFAULT;
795 break;
796 }
797
798 case FBIO_WAITFORVSYNC:
799 {
800 u32 crt;
801 dev_dbg(info->device, "FBIO_WAITFORVSYNC:\n");
802 if (get_user(crt, (u32 __user *) arg))
803 break;
804
805 retval = ps3fb_wait_for_vsync(crt);
806 break;
807 }
808
809 case PS3FB_IOCTL_SETMODE:
810 {
811 struct ps3fb_par *par = info->par;
812 const struct fb_videomode *vmode;
813 struct fb_var_screeninfo var;
814
815 if (copy_from_user(&val, argp, sizeof(val)))
816 break;
817
818 if (!(val & PS3AV_MODE_MASK)) {
819 u32 id = ps3av_get_auto_mode();
820 if (id > 0)
821 val = (val & ~PS3AV_MODE_MASK) | id;
822 }
823 dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
824 retval = -EINVAL;
825 vmode = ps3fb_vmode(val);
826 if (vmode) {
827 var = info->var;
828 fb_videomode_to_var(&var, vmode);
829 console_lock();
830 /* Force, in case only special bits changed */
831 var.activate |= FB_ACTIVATE_FORCE;
832 par->new_mode_id = val;
833 retval = fb_set_var(info, &var);
834 if (!retval)
835 fbcon_update_vcs(info, var.activate & FB_ACTIVATE_ALL);
836 console_unlock();
837 }
838 break;
839 }
840
841 case PS3FB_IOCTL_GETMODE:
842 val = ps3av_get_mode();
843 dev_dbg(info->device, "PS3FB_IOCTL_GETMODE:%x\n", val);
844 if (!copy_to_user(argp, &val, sizeof(val)))
845 retval = 0;
846 break;
847
848 case PS3FB_IOCTL_SCREENINFO:
849 {
850 struct ps3fb_par *par = info->par;
851 struct ps3fb_ioctl_res res;
852 dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
853 res.xres = info->fix.line_length / BPP;
854 res.yres = info->var.yres_virtual;
855 res.xoff = (res.xres - info->var.xres) / 2;
856 res.yoff = (res.yres - info->var.yres) / 2;
857 res.num_frames = par->num_frames;
858 if (!copy_to_user(argp, &res, sizeof(res)))
859 retval = 0;
860 break;
861 }
862
863 case PS3FB_IOCTL_ON:
864 dev_dbg(info->device, "PS3FB_IOCTL_ON:\n");
865 atomic_inc(&ps3fb.ext_flip);
866 retval = 0;
867 break;
868
869 case PS3FB_IOCTL_OFF:
870 dev_dbg(info->device, "PS3FB_IOCTL_OFF:\n");
871 atomic_dec_if_positive(&ps3fb.ext_flip);
872 retval = 0;
873 break;
874
875 case PS3FB_IOCTL_FSEL:
876 if (copy_from_user(&val, argp, sizeof(val)))
877 break;
878
879 dev_dbg(info->device, "PS3FB_IOCTL_FSEL:%d\n", val);
880 console_lock();
881 retval = ps3fb_sync(info, val);
882 console_unlock();
883 break;
884
885 default:
886 retval = -ENOIOCTLCMD;
887 break;
888 }
889 return retval;
890 }
891
ps3fbd(void * arg)892 static int ps3fbd(void *arg)
893 {
894 struct fb_info *info = arg;
895
896 set_freezable();
897 while (!kthread_should_stop()) {
898 try_to_freeze();
899 set_current_state(TASK_INTERRUPTIBLE);
900 if (ps3fb.is_kicked) {
901 ps3fb.is_kicked = 0;
902 console_lock();
903 ps3fb_sync(info, 0); /* single buffer */
904 console_unlock();
905 }
906 schedule();
907 }
908 return 0;
909 }
910
ps3fb_vsync_interrupt(int irq,void * ptr)911 static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
912 {
913 struct device *dev = ptr;
914 u64 v1;
915 int status;
916 struct display_head *head = &ps3fb.dinfo->display_head[1];
917
918 status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
919 if (status) {
920 dev_err(dev, "%s: lv1_gpu_context_intr failed: %d\n", __func__,
921 status);
922 return IRQ_NONE;
923 }
924
925 if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
926 /* VSYNC */
927 ps3fb.vblank_count = head->vblank_count;
928 if (ps3fb.task && !ps3fb.is_blanked &&
929 !atomic_read(&ps3fb.ext_flip)) {
930 ps3fb.is_kicked = 1;
931 wake_up_process(ps3fb.task);
932 }
933 wake_up_interruptible(&ps3fb.wait_vsync);
934 }
935
936 return IRQ_HANDLED;
937 }
938
939
940 static const struct fb_ops ps3fb_ops = {
941 .owner = THIS_MODULE,
942 .fb_open = ps3fb_open,
943 .fb_release = ps3fb_release,
944 __FB_DEFAULT_SYSMEM_OPS_RDWR,
945 .fb_check_var = ps3fb_check_var,
946 .fb_set_par = ps3fb_set_par,
947 .fb_setcolreg = ps3fb_setcolreg,
948 .fb_pan_display = ps3fb_pan_display,
949 __FB_DEFAULT_SYSMEM_OPS_DRAW,
950 .fb_mmap = ps3fb_mmap,
951 .fb_blank = ps3fb_blank,
952 .fb_ioctl = ps3fb_ioctl,
953 .fb_compat_ioctl = ps3fb_ioctl
954 };
955
956 static const struct fb_fix_screeninfo ps3fb_fix = {
957 .id = DEVICE_NAME,
958 .type = FB_TYPE_PACKED_PIXELS,
959 .visual = FB_VISUAL_TRUECOLOR,
960 .accel = FB_ACCEL_NONE,
961 };
962
ps3fb_probe(struct ps3_system_bus_device * dev)963 static int ps3fb_probe(struct ps3_system_bus_device *dev)
964 {
965 struct fb_info *info;
966 struct ps3fb_par *par;
967 int retval;
968 u64 ddr_lpar = 0;
969 u64 lpar_dma_control = 0;
970 u64 lpar_driver_info = 0;
971 u64 lpar_reports = 0;
972 u64 lpar_reports_size = 0;
973 u64 xdr_lpar;
974 struct gpu_driver_info *dinfo;
975 void *fb_start;
976 int status;
977 struct task_struct *task;
978 unsigned long max_ps3fb_size;
979
980 if (ps3fb_videomemory.size < GPU_CMD_BUF_SIZE) {
981 dev_err(&dev->core, "%s: Not enough video memory\n", __func__);
982 return -ENOMEM;
983 }
984
985 retval = ps3_open_hv_device(dev);
986 if (retval) {
987 dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
988 __func__);
989 goto err;
990 }
991
992 if (!ps3fb_mode)
993 ps3fb_mode = ps3av_get_mode();
994 dev_dbg(&dev->core, "ps3fb_mode: %d\n", ps3fb_mode);
995
996 atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
997 atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
998 init_waitqueue_head(&ps3fb.wait_vsync);
999
1000 #ifdef HEAD_A
1001 status = lv1_gpu_display_sync(0x0, 0, L1GPU_DISPLAY_SYNC_VSYNC);
1002 if (status) {
1003 dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1004 __func__, status);
1005 retval = -ENODEV;
1006 goto err_close_device;
1007 }
1008 #endif
1009 #ifdef HEAD_B
1010 status = lv1_gpu_display_sync(0x0, 1, L1GPU_DISPLAY_SYNC_VSYNC);
1011 if (status) {
1012 dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1013 __func__, status);
1014 retval = -ENODEV;
1015 goto err_close_device;
1016 }
1017 #endif
1018
1019 max_ps3fb_size = ALIGN(GPU_IOIF, 256*1024*1024) - GPU_IOIF;
1020 if (ps3fb_videomemory.size > max_ps3fb_size) {
1021 dev_info(&dev->core, "Limiting ps3fb mem size to %lu bytes\n",
1022 max_ps3fb_size);
1023 ps3fb_videomemory.size = max_ps3fb_size;
1024 }
1025
1026 /* get gpu context handle */
1027 status = lv1_gpu_memory_allocate(ps3fb_videomemory.size, 0, 0, 0, 0,
1028 &ps3fb.memory_handle, &ddr_lpar);
1029 if (status) {
1030 dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
1031 __func__, status);
1032 retval = -ENOMEM;
1033 goto err_close_device;
1034 }
1035 dev_dbg(&dev->core, "ddr:lpar:0x%llx\n", ddr_lpar);
1036
1037 status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
1038 &ps3fb.context_handle,
1039 &lpar_dma_control, &lpar_driver_info,
1040 &lpar_reports, &lpar_reports_size);
1041 if (status) {
1042 dev_err(&dev->core,
1043 "%s: lv1_gpu_context_allocate failed: %d\n", __func__,
1044 status);
1045 retval = -ENOMEM;
1046 goto err_gpu_memory_free;
1047 }
1048
1049 /* vsync interrupt */
1050 dinfo = (void __force *)ioremap(lpar_driver_info, 128 * 1024);
1051 if (!dinfo) {
1052 dev_err(&dev->core, "%s: ioremap failed\n", __func__);
1053 retval = -ENOMEM;
1054 goto err_gpu_context_free;
1055 }
1056
1057 ps3fb.dinfo = dinfo;
1058 dev_dbg(&dev->core, "version_driver:%x\n", dinfo->version_driver);
1059 dev_dbg(&dev->core, "irq outlet:%x\n", dinfo->irq.irq_outlet);
1060 dev_dbg(&dev->core, "version_gpu: %x memory_size: %x ch: %x "
1061 "core_freq: %d mem_freq:%d\n", dinfo->version_gpu,
1062 dinfo->memory_size, dinfo->hardware_channel,
1063 dinfo->nvcore_frequency/1000000,
1064 dinfo->memory_frequency/1000000);
1065
1066 if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
1067 dev_err(&dev->core, "%s: version_driver err:%x\n", __func__,
1068 dinfo->version_driver);
1069 retval = -EINVAL;
1070 goto err_iounmap_dinfo;
1071 }
1072
1073 retval = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
1074 &ps3fb.irq_no);
1075 if (retval) {
1076 dev_err(&dev->core, "%s: ps3_alloc_irq failed %d\n", __func__,
1077 retval);
1078 goto err_iounmap_dinfo;
1079 }
1080
1081 retval = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt,
1082 0, DEVICE_NAME, &dev->core);
1083 if (retval) {
1084 dev_err(&dev->core, "%s: request_irq failed %d\n", __func__,
1085 retval);
1086 goto err_destroy_plug;
1087 }
1088
1089 dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
1090 (1 << GPU_INTR_STATUS_FLIP_1);
1091
1092 /* Clear memory to prevent kernel info leakage into userspace */
1093 memset(ps3fb_videomemory.address, 0, ps3fb_videomemory.size);
1094
1095 xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1096
1097 status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
1098 xdr_lpar, ps3fb_videomemory.size,
1099 CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
1100 CBE_IOPTE_M);
1101 if (status) {
1102 dev_err(&dev->core, "%s: lv1_gpu_context_iomap failed: %d\n",
1103 __func__, status);
1104 retval = -ENXIO;
1105 goto err_free_irq;
1106 }
1107
1108 dev_dbg(&dev->core, "video:%p ioif:%lx lpar:%llx size:%lx\n",
1109 ps3fb_videomemory.address, GPU_IOIF, xdr_lpar,
1110 ps3fb_videomemory.size);
1111
1112 status = lv1_gpu_fb_setup(ps3fb.context_handle, xdr_lpar,
1113 GPU_CMD_BUF_SIZE, GPU_IOIF);
1114 if (status) {
1115 dev_err(&dev->core, "%s: lv1_gpu_fb_setup failed: %d\n",
1116 __func__, status);
1117 retval = -ENXIO;
1118 goto err_context_unmap;
1119 }
1120
1121 info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
1122 if (!info) {
1123 retval = -ENOMEM;
1124 goto err_context_fb_close;
1125 }
1126
1127 par = info->par;
1128 par->mode_id = ~ps3fb_mode; /* != ps3fb_mode, to trigger change */
1129 par->new_mode_id = ps3fb_mode;
1130 par->num_frames = 1;
1131
1132 info->fbops = &ps3fb_ops;
1133 info->fix = ps3fb_fix;
1134
1135 /*
1136 * The GPU command buffer is at the start of video memory
1137 * As we don't use the full command buffer, we can put the actual
1138 * frame buffer at offset GPU_FB_START and save some precious XDR
1139 * memory
1140 */
1141 fb_start = ps3fb_videomemory.address + GPU_FB_START;
1142 info->screen_buffer = fb_start;
1143 info->fix.smem_start = __pa(fb_start);
1144 info->fix.smem_len = ps3fb_videomemory.size - GPU_FB_START;
1145
1146 info->pseudo_palette = par->pseudo_palette;
1147 info->flags = FBINFO_VIRTFB | FBINFO_READS_FAST |
1148 FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
1149
1150 retval = fb_alloc_cmap(&info->cmap, 256, 0);
1151 if (retval < 0)
1152 goto err_framebuffer_release;
1153
1154 if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
1155 ARRAY_SIZE(ps3fb_modedb),
1156 ps3fb_vmode(par->new_mode_id), 32)) {
1157 retval = -EINVAL;
1158 goto err_fb_dealloc;
1159 }
1160
1161 fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
1162 &info->modelist);
1163
1164 retval = register_framebuffer(info);
1165 if (retval < 0)
1166 goto err_fb_dealloc;
1167
1168 ps3_system_bus_set_drvdata(dev, info);
1169
1170 fb_info(info, "using %u KiB of video memory\n", info->fix.smem_len >> 10);
1171
1172 task = kthread_run(ps3fbd, info, DEVICE_NAME);
1173 if (IS_ERR(task)) {
1174 retval = PTR_ERR(task);
1175 goto err_unregister_framebuffer;
1176 }
1177
1178 ps3fb.task = task;
1179
1180 return 0;
1181
1182 err_unregister_framebuffer:
1183 unregister_framebuffer(info);
1184 err_fb_dealloc:
1185 fb_dealloc_cmap(&info->cmap);
1186 err_framebuffer_release:
1187 framebuffer_release(info);
1188 err_context_fb_close:
1189 lv1_gpu_fb_close(ps3fb.context_handle);
1190 err_context_unmap:
1191 lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1192 ps3fb_videomemory.size, CBE_IOPTE_M);
1193 err_free_irq:
1194 free_irq(ps3fb.irq_no, &dev->core);
1195 err_destroy_plug:
1196 ps3_irq_plug_destroy(ps3fb.irq_no);
1197 err_iounmap_dinfo:
1198 iounmap((u8 __force __iomem *)ps3fb.dinfo);
1199 err_gpu_context_free:
1200 lv1_gpu_context_free(ps3fb.context_handle);
1201 err_gpu_memory_free:
1202 lv1_gpu_memory_free(ps3fb.memory_handle);
1203 err_close_device:
1204 ps3_close_hv_device(dev);
1205 err:
1206 return retval;
1207 }
1208
ps3fb_shutdown(struct ps3_system_bus_device * dev)1209 static void ps3fb_shutdown(struct ps3_system_bus_device *dev)
1210 {
1211 struct fb_info *info = ps3_system_bus_get_drvdata(dev);
1212 u64 xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1213
1214 dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
1215
1216 atomic_inc(&ps3fb.ext_flip); /* flip off */
1217 ps3fb.dinfo->irq.mask = 0;
1218
1219 if (ps3fb.task) {
1220 struct task_struct *task = ps3fb.task;
1221 ps3fb.task = NULL;
1222 kthread_stop(task);
1223 }
1224 if (ps3fb.irq_no) {
1225 free_irq(ps3fb.irq_no, &dev->core);
1226 ps3_irq_plug_destroy(ps3fb.irq_no);
1227 }
1228 if (info) {
1229 unregister_framebuffer(info);
1230 fb_dealloc_cmap(&info->cmap);
1231 framebuffer_release(info);
1232 ps3_system_bus_set_drvdata(dev, NULL);
1233 }
1234 iounmap((u8 __force __iomem *)ps3fb.dinfo);
1235 lv1_gpu_fb_close(ps3fb.context_handle);
1236 lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1237 ps3fb_videomemory.size, CBE_IOPTE_M);
1238 lv1_gpu_context_free(ps3fb.context_handle);
1239 lv1_gpu_memory_free(ps3fb.memory_handle);
1240 ps3_close_hv_device(dev);
1241 dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
1242 }
1243
1244 static struct ps3_system_bus_driver ps3fb_driver = {
1245 .match_id = PS3_MATCH_ID_GPU,
1246 .match_sub_id = PS3_MATCH_SUB_ID_GPU_FB,
1247 .core.name = DEVICE_NAME,
1248 .core.owner = THIS_MODULE,
1249 .probe = ps3fb_probe,
1250 .remove = ps3fb_shutdown,
1251 .shutdown = ps3fb_shutdown,
1252 };
1253
ps3fb_setup(void)1254 static int __init ps3fb_setup(void)
1255 {
1256 char *options;
1257
1258 #ifdef MODULE
1259 return 0;
1260 #endif
1261
1262 if (fb_get_options(DEVICE_NAME, &options))
1263 return -ENXIO;
1264
1265 if (!options || !*options)
1266 return 0;
1267
1268 while (1) {
1269 char *this_opt = strsep(&options, ",");
1270
1271 if (!this_opt)
1272 break;
1273 if (!*this_opt)
1274 continue;
1275 if (!strncmp(this_opt, "mode:", 5))
1276 ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
1277 else
1278 mode_option = this_opt;
1279 }
1280 return 0;
1281 }
1282
ps3fb_init(void)1283 static int __init ps3fb_init(void)
1284 {
1285 if (!ps3fb_videomemory.address || ps3fb_setup())
1286 return -ENXIO;
1287
1288 return ps3_system_bus_driver_register(&ps3fb_driver);
1289 }
1290
ps3fb_exit(void)1291 static void __exit ps3fb_exit(void)
1292 {
1293 pr_debug(" -> %s:%d\n", __func__, __LINE__);
1294 ps3_system_bus_driver_unregister(&ps3fb_driver);
1295 pr_debug(" <- %s:%d\n", __func__, __LINE__);
1296 }
1297
1298 module_init(ps3fb_init);
1299 module_exit(ps3fb_exit);
1300
1301 MODULE_LICENSE("GPL");
1302 MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
1303 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
1304 MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_FB);
1305