Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
ps3fb.c
Go to the documentation of this file.
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/init.h>
33 
34 #include <asm/cell-regs.h>
35 #include <asm/lv1call.h>
36 #include <asm/ps3av.h>
37 #include <asm/ps3fb.h>
38 #include <asm/ps3.h>
39 #include <asm/ps3gpu.h>
40 
41 
42 #define DEVICE_NAME "ps3fb"
43 
44 #define GPU_CMD_BUF_SIZE (2 * 1024 * 1024)
45 #define GPU_FB_START (64 * 1024)
46 #define GPU_IOIF (0x0d000000UL)
47 #define GPU_ALIGN_UP(x) _ALIGN_UP((x), 64)
48 #define GPU_MAX_LINE_LENGTH (65536 - 64)
49 
50 #define GPU_INTR_STATUS_VSYNC_0 0 /* vsync on head A */
51 #define GPU_INTR_STATUS_VSYNC_1 1 /* vsync on head B */
52 #define GPU_INTR_STATUS_FLIP_0 3 /* flip head A */
53 #define GPU_INTR_STATUS_FLIP_1 4 /* flip head B */
54 #define GPU_INTR_STATUS_QUEUE_0 5 /* queue head A */
55 #define GPU_INTR_STATUS_QUEUE_1 6 /* queue head B */
56 
57 #define GPU_DRIVER_INFO_VERSION 0x211
58 
59 /* gpu internals */
60 struct display_head {
61  u64 be_time_stamp;
62  u32 status;
63  u32 offset;
64  u32 res1;
65  u32 res2;
66  u32 field;
67  u32 reserved1;
68 
69  u64 res3;
70  u32 raster;
71 
72  u64 vblank_count;
73  u32 field_vsync;
74  u32 reserved2;
75 };
76 
77 struct gpu_irq {
78  u32 irq_outlet;
79  u32 status;
80  u32 mask;
81  u32 video_cause;
82  u32 graph_cause;
83  u32 user_cause;
84 
85  u32 res1;
86  u64 res2;
87 
88  u32 reserved[4];
89 };
90 
91 struct gpu_driver_info {
92  u32 version_driver;
93  u32 version_gpu;
94  u32 memory_size;
95  u32 hardware_channel;
96 
97  u32 nvcore_frequency;
98  u32 memory_frequency;
99 
100  u32 reserved[1063];
101  struct display_head display_head[8];
102  struct gpu_irq irq;
103 };
104 
105 struct ps3fb_priv {
106  unsigned int irq_no;
107 
108  u64 context_handle, memory_handle;
109  struct gpu_driver_info *dinfo;
110 
111  u64 vblank_count; /* frame count */
112  wait_queue_head_t wait_vsync;
113 
114  atomic_t ext_flip; /* on/off flip with vsync */
115  atomic_t f_count; /* fb_open count */
116  int is_blanked;
117  int is_kicked;
118  struct task_struct *task;
119 };
120 static struct ps3fb_priv ps3fb;
121 
122 struct ps3fb_par {
123  u32 pseudo_palette[16];
124  int mode_id, new_mode_id;
125  unsigned int num_frames; /* num of frame buffers */
126  unsigned int width;
127  unsigned int height;
128  unsigned int ddr_line_length;
129  unsigned int ddr_frame_size;
130  unsigned int xdr_frame_size;
131  unsigned int full_offset; /* start of fullscreen DDR fb */
132  unsigned int fb_offset; /* start of actual DDR fb */
133  unsigned int pan_offset;
134 };
135 
136 
137 #define FIRST_NATIVE_MODE_INDEX 10
138 
139 static const struct fb_videomode ps3fb_modedb[] = {
140  /* 60 Hz broadcast modes (modes "1" to "5") */
141  {
142  /* 480i */
143  "480i", 60, 576, 384, 74074, 130, 89, 78, 57, 63, 6,
144  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
145  }, {
146  /* 480p */
147  "480p", 60, 576, 384, 37037, 130, 89, 78, 57, 63, 6,
148  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
149  }, {
150  /* 720p */
151  "720p", 60, 1124, 644, 13481, 298, 148, 57, 44, 80, 5,
152  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
153  }, {
154  /* 1080i */
155  "1080i", 60, 1688, 964, 13481, 264, 160, 94, 62, 88, 5,
156  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
157  }, {
158  /* 1080p */
159  "1080p", 60, 1688, 964, 6741, 264, 160, 94, 62, 88, 5,
160  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
161  },
162 
163  /* 50 Hz broadcast modes (modes "6" to "10") */
164  {
165  /* 576i */
166  "576i", 50, 576, 460, 74074, 142, 83, 97, 63, 63, 5,
167  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
168  }, {
169  /* 576p */
170  "576p", 50, 576, 460, 37037, 142, 83, 97, 63, 63, 5,
171  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
172  }, {
173  /* 720p */
174  "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
175  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
176  }, {
177  /* 1080i */
178  "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
179  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
180  }, {
181  /* 1080p */
182  "1080p", 50, 1688, 964, 6734, 264, 600, 94, 62, 88, 5,
183  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
184  },
185 
186  [FIRST_NATIVE_MODE_INDEX] =
187  /* 60 Hz broadcast modes (full resolution versions of modes "1" to "5") */
188  {
189  /* 480if */
190  "480if", 60, 720, 480, 74074, 58, 17, 30, 9, 63, 6,
191  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
192  }, {
193  /* 480pf */
194  "480pf", 60, 720, 480, 37037, 58, 17, 30, 9, 63, 6,
195  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
196  }, {
197  /* 720pf */
198  "720pf", 60, 1280, 720, 13481, 220, 70, 19, 6, 80, 5,
199  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
200  }, {
201  /* 1080if */
202  "1080if", 60, 1920, 1080, 13481, 148, 44, 36, 4, 88, 5,
203  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
204  }, {
205  /* 1080pf */
206  "1080pf", 60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
207  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
208  },
209 
210  /* 50 Hz broadcast modes (full resolution versions of modes "6" to "10") */
211  {
212  /* 576if */
213  "576if", 50, 720, 576, 74074, 70, 11, 39, 5, 63, 5,
214  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
215  }, {
216  /* 576pf */
217  "576pf", 50, 720, 576, 37037, 70, 11, 39, 5, 63, 5,
218  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
219  }, {
220  /* 720pf */
221  "720pf", 50, 1280, 720, 13468, 220, 400, 19, 6, 80, 5,
222  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
223  }, {
224  /* 1080if */
225  "1080if", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
226  FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
227  }, {
228  /* 1080pf */
229  "1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
230  FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
231  },
232 
233  /* VESA modes (modes "11" to "13") */
234  {
235  /* WXGA */
236  "wxga", 60, 1280, 768, 12924, 160, 24, 29, 3, 136, 6,
237  0, FB_VMODE_NONINTERLACED,
238  FB_MODE_IS_VESA
239  }, {
240  /* SXGA */
241  "sxga", 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
242  FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED,
243  FB_MODE_IS_VESA
244  }, {
245  /* WUXGA */
246  "wuxga", 60, 1920, 1200, 6494, 80, 48, 26, 3, 32, 6,
247  FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED,
248  FB_MODE_IS_VESA
249  }
250 };
251 
252 
253 #define HEAD_A
254 #define HEAD_B
255 
256 #define BPP 4 /* number of bytes per pixel */
257 
258 
259 static int ps3fb_mode;
260 module_param(ps3fb_mode, int, 0);
261 
262 static char *mode_option __devinitdata;
263 
264 static int ps3fb_cmp_mode(const struct fb_videomode *vmode,
265  const struct fb_var_screeninfo *var)
266 {
267  long xres, yres, left_margin, right_margin, upper_margin, lower_margin;
268  long dx, dy;
269 
270  /* maximum values */
271  if (var->xres > vmode->xres || var->yres > vmode->yres ||
272  var->pixclock > vmode->pixclock ||
273  var->hsync_len > vmode->hsync_len ||
274  var->vsync_len > vmode->vsync_len)
275  return -1;
276 
277  /* progressive/interlaced must match */
278  if ((var->vmode & FB_VMODE_MASK) != vmode->vmode)
279  return -1;
280 
281  /* minimum resolution */
282  xres = max(var->xres, 1U);
283  yres = max(var->yres, 1U);
284 
285  /* minimum margins */
286  left_margin = max(var->left_margin, vmode->left_margin);
287  right_margin = max(var->right_margin, vmode->right_margin);
288  upper_margin = max(var->upper_margin, vmode->upper_margin);
289  lower_margin = max(var->lower_margin, vmode->lower_margin);
290 
291  /* resolution + margins may not exceed native parameters */
292  dx = ((long)vmode->left_margin + (long)vmode->xres +
293  (long)vmode->right_margin) -
294  (left_margin + xres + right_margin);
295  if (dx < 0)
296  return -1;
297 
298  dy = ((long)vmode->upper_margin + (long)vmode->yres +
299  (long)vmode->lower_margin) -
300  (upper_margin + yres + lower_margin);
301  if (dy < 0)
302  return -1;
303 
304  /* exact match */
305  if (!dx && !dy)
306  return 0;
307 
308  /* resolution difference */
309  return (vmode->xres - xres) * (vmode->yres - yres);
310 }
311 
312 static const struct fb_videomode *ps3fb_native_vmode(enum ps3av_mode_num id)
313 {
314  return &ps3fb_modedb[FIRST_NATIVE_MODE_INDEX + id - 1];
315 }
316 
317 static const struct fb_videomode *ps3fb_vmode(int id)
318 {
319  u32 mode = id & PS3AV_MODE_MASK;
320 
321  if (mode < PS3AV_MODE_480I || mode > PS3AV_MODE_WUXGA)
322  return NULL;
323 
324  if (mode <= PS3AV_MODE_1080P50 && !(id & PS3AV_MODE_FULL)) {
325  /* Non-fullscreen broadcast mode */
326  return &ps3fb_modedb[mode - 1];
327  }
328 
329  return ps3fb_native_vmode(mode);
330 }
331 
332 static unsigned int ps3fb_find_mode(struct fb_var_screeninfo *var,
333  u32 *ddr_line_length, u32 *xdr_line_length)
334 {
335  unsigned int id, best_id;
336  int diff, best_diff;
337  const struct fb_videomode *vmode;
338  long gap;
339 
340  best_id = 0;
341  best_diff = INT_MAX;
342  pr_debug("%s: wanted %u [%u] %u x %u [%u] %u\n", __func__,
343  var->left_margin, var->xres, var->right_margin,
344  var->upper_margin, var->yres, var->lower_margin);
345  for (id = PS3AV_MODE_480I; id <= PS3AV_MODE_WUXGA; id++) {
346  vmode = ps3fb_native_vmode(id);
347  diff = ps3fb_cmp_mode(vmode, var);
348  pr_debug("%s: mode %u: %u [%u] %u x %u [%u] %u: diff = %d\n",
349  __func__, id, vmode->left_margin, vmode->xres,
350  vmode->right_margin, vmode->upper_margin,
351  vmode->yres, vmode->lower_margin, diff);
352  if (diff < 0)
353  continue;
354  if (diff < best_diff) {
355  best_id = id;
356  if (!diff)
357  break;
358  best_diff = diff;
359  }
360  }
361 
362  if (!best_id) {
363  pr_debug("%s: no suitable mode found\n", __func__);
364  return 0;
365  }
366 
367  id = best_id;
368  vmode = ps3fb_native_vmode(id);
369 
370  *ddr_line_length = vmode->xres * BPP;
371 
372  /* minimum resolution */
373  if (!var->xres)
374  var->xres = 1;
375  if (!var->yres)
376  var->yres = 1;
377 
378  /* minimum virtual resolution */
379  if (var->xres_virtual < var->xres)
380  var->xres_virtual = var->xres;
381  if (var->yres_virtual < var->yres)
382  var->yres_virtual = var->yres;
383 
384  /* minimum margins */
385  if (var->left_margin < vmode->left_margin)
386  var->left_margin = vmode->left_margin;
387  if (var->right_margin < vmode->right_margin)
388  var->right_margin = vmode->right_margin;
389  if (var->upper_margin < vmode->upper_margin)
390  var->upper_margin = vmode->upper_margin;
391  if (var->lower_margin < vmode->lower_margin)
392  var->lower_margin = vmode->lower_margin;
393 
394  /* extra margins */
395  gap = ((long)vmode->left_margin + (long)vmode->xres +
396  (long)vmode->right_margin) -
397  ((long)var->left_margin + (long)var->xres +
398  (long)var->right_margin);
399  if (gap > 0) {
400  var->left_margin += gap/2;
401  var->right_margin += (gap+1)/2;
402  pr_debug("%s: rounded up H to %u [%u] %u\n", __func__,
403  var->left_margin, var->xres, var->right_margin);
404  }
405 
406  gap = ((long)vmode->upper_margin + (long)vmode->yres +
407  (long)vmode->lower_margin) -
408  ((long)var->upper_margin + (long)var->yres +
409  (long)var->lower_margin);
410  if (gap > 0) {
411  var->upper_margin += gap/2;
412  var->lower_margin += (gap+1)/2;
413  pr_debug("%s: rounded up V to %u [%u] %u\n", __func__,
414  var->upper_margin, var->yres, var->lower_margin);
415  }
416 
417  /* fixed fields */
418  var->pixclock = vmode->pixclock;
419  var->hsync_len = vmode->hsync_len;
420  var->vsync_len = vmode->vsync_len;
421  var->sync = vmode->sync;
422 
423  if (ps3_compare_firmware_version(1, 9, 0) >= 0) {
424  *xdr_line_length = GPU_ALIGN_UP(var->xres_virtual * BPP);
425  if (*xdr_line_length > GPU_MAX_LINE_LENGTH)
426  *xdr_line_length = GPU_MAX_LINE_LENGTH;
427  } else
428  *xdr_line_length = *ddr_line_length;
429 
430  if (vmode->sync & FB_SYNC_BROADCAST) {
431  /* Full broadcast modes have the full mode bit set */
432  if (vmode->xres == var->xres && vmode->yres == var->yres)
433  id |= PS3AV_MODE_FULL;
434  }
435 
436  pr_debug("%s: mode %u\n", __func__, id);
437  return id;
438 }
439 
440 static void ps3fb_sync_image(struct device *dev, u64 frame_offset,
441  u64 dst_offset, u64 src_offset, u32 width,
442  u32 height, u32 dst_line_length,
443  u32 src_line_length)
444 {
445  int status;
446  u64 line_length;
447 
448  line_length = dst_line_length;
449  if (src_line_length != dst_line_length)
450  line_length |= (u64)src_line_length << 32;
451 
452  src_offset += GPU_FB_START;
453 
454  mutex_lock(&ps3_gpu_mutex);
455  status = lv1_gpu_fb_blit(ps3fb.context_handle, dst_offset,
456  GPU_IOIF + src_offset,
457  L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
458  (width << 16) | height,
459  line_length);
460  mutex_unlock(&ps3_gpu_mutex);
461 
462  if (status)
463  dev_err(dev, "%s: lv1_gpu_fb_blit failed: %d\n", __func__,
464  status);
465 #ifdef HEAD_A
466  status = lv1_gpu_display_flip(ps3fb.context_handle, 0, frame_offset);
467  if (status)
468  dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
469  status);
470 #endif
471 #ifdef HEAD_B
472  status = lv1_gpu_display_flip(ps3fb.context_handle, 1, frame_offset);
473  if (status)
474  dev_err(dev, "%s: lv1_gpu_display_flip failed: %d\n", __func__,
475  status);
476 #endif
477 }
478 
479 static int ps3fb_sync(struct fb_info *info, u32 frame)
480 {
481  struct ps3fb_par *par = info->par;
482  int error = 0;
483  u64 ddr_base, xdr_base;
484 
485  if (frame > par->num_frames - 1) {
486  dev_dbg(info->device, "%s: invalid frame number (%u)\n",
487  __func__, frame);
488  error = -EINVAL;
489  goto out;
490  }
491 
492  xdr_base = frame * par->xdr_frame_size;
493  ddr_base = frame * par->ddr_frame_size;
494 
495  ps3fb_sync_image(info->device, ddr_base + par->full_offset,
496  ddr_base + par->fb_offset, xdr_base + par->pan_offset,
497  par->width, par->height, par->ddr_line_length,
498  info->fix.line_length);
499 
500 out:
501  return error;
502 }
503 
504 static int ps3fb_open(struct fb_info *info, int user)
505 {
506  atomic_inc(&ps3fb.f_count);
507  return 0;
508 }
509 
510 static int ps3fb_release(struct fb_info *info, int user)
511 {
512  if (atomic_dec_and_test(&ps3fb.f_count)) {
513  if (atomic_read(&ps3fb.ext_flip)) {
514  atomic_set(&ps3fb.ext_flip, 0);
515  if (console_trylock()) {
516  ps3fb_sync(info, 0); /* single buffer */
517  console_unlock();
518  }
519  }
520  }
521  return 0;
522 }
523 
524  /*
525  * Setting the video mode has been split into two parts.
526  * First part, xxxfb_check_var, must not write anything
527  * to hardware, it should only verify and adjust var.
528  * This means it doesn't alter par but it does use hardware
529  * data from it to check this var.
530  */
531 
532 static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
533 {
534  u32 xdr_line_length, ddr_line_length;
535  int mode;
536 
537  mode = ps3fb_find_mode(var, &ddr_line_length, &xdr_line_length);
538  if (!mode)
539  return -EINVAL;
540 
541  /* Virtual screen */
542  if (var->xres_virtual > xdr_line_length / BPP) {
543  dev_dbg(info->device,
544  "Horizontal virtual screen size too large\n");
545  return -EINVAL;
546  }
547 
548  if (var->xoffset + var->xres > var->xres_virtual ||
549  var->yoffset + var->yres > var->yres_virtual) {
550  dev_dbg(info->device, "panning out-of-range\n");
551  return -EINVAL;
552  }
553 
554  /* We support ARGB8888 only */
555  if (var->bits_per_pixel > 32 || var->grayscale ||
556  var->red.offset > 16 || var->green.offset > 8 ||
557  var->blue.offset > 0 || var->transp.offset > 24 ||
558  var->red.length > 8 || var->green.length > 8 ||
559  var->blue.length > 8 || var->transp.length > 8 ||
560  var->red.msb_right || var->green.msb_right ||
561  var->blue.msb_right || var->transp.msb_right || var->nonstd) {
562  dev_dbg(info->device, "We support ARGB8888 only\n");
563  return -EINVAL;
564  }
565 
566  var->bits_per_pixel = 32;
567  var->red.offset = 16;
568  var->green.offset = 8;
569  var->blue.offset = 0;
570  var->transp.offset = 24;
571  var->red.length = 8;
572  var->green.length = 8;
573  var->blue.length = 8;
574  var->transp.length = 8;
575  var->red.msb_right = 0;
576  var->green.msb_right = 0;
577  var->blue.msb_right = 0;
578  var->transp.msb_right = 0;
579 
580  /* Rotation is not supported */
581  if (var->rotate) {
582  dev_dbg(info->device, "Rotation is not supported\n");
583  return -EINVAL;
584  }
585 
586  /* Memory limit */
587  if (var->yres_virtual * xdr_line_length > info->fix.smem_len) {
588  dev_dbg(info->device, "Not enough memory\n");
589  return -ENOMEM;
590  }
591 
592  var->height = -1;
593  var->width = -1;
594 
595  return 0;
596 }
597 
598  /*
599  * This routine actually sets the video mode.
600  */
601 
602 static int ps3fb_set_par(struct fb_info *info)
603 {
604  struct ps3fb_par *par = info->par;
605  unsigned int mode, ddr_line_length, xdr_line_length, lines, maxlines;
606  unsigned int ddr_xoff, ddr_yoff, offset;
607  const struct fb_videomode *vmode;
608  u64 dst;
609 
610  mode = ps3fb_find_mode(&info->var, &ddr_line_length, &xdr_line_length);
611  if (!mode)
612  return -EINVAL;
613 
614  vmode = ps3fb_native_vmode(mode & PS3AV_MODE_MASK);
615 
616  info->fix.xpanstep = info->var.xres_virtual > info->var.xres ? 1 : 0;
617  info->fix.ypanstep = info->var.yres_virtual > info->var.yres ? 1 : 0;
618  info->fix.line_length = xdr_line_length;
619 
620  par->ddr_line_length = ddr_line_length;
621  par->ddr_frame_size = vmode->yres * ddr_line_length;
622  par->xdr_frame_size = info->var.yres_virtual * xdr_line_length;
623 
624  par->num_frames = info->fix.smem_len /
625  max(par->ddr_frame_size, par->xdr_frame_size);
626 
627  /* Keep the special bits we cannot set using fb_var_screeninfo */
628  par->new_mode_id = (par->new_mode_id & ~PS3AV_MODE_MASK) | mode;
629 
630  par->width = info->var.xres;
631  par->height = info->var.yres;
632 
633  /* Start of the virtual frame buffer (relative to fullscreen) */
634  ddr_xoff = info->var.left_margin - vmode->left_margin;
635  ddr_yoff = info->var.upper_margin - vmode->upper_margin;
636  offset = ddr_yoff * ddr_line_length + ddr_xoff * BPP;
637 
638  par->fb_offset = GPU_ALIGN_UP(offset);
639  par->full_offset = par->fb_offset - offset;
640  par->pan_offset = info->var.yoffset * xdr_line_length +
641  info->var.xoffset * BPP;
642 
643  if (par->new_mode_id != par->mode_id) {
644  if (ps3av_set_video_mode(par->new_mode_id)) {
645  par->new_mode_id = par->mode_id;
646  return -EINVAL;
647  }
648  par->mode_id = par->new_mode_id;
649  }
650 
651  /* Clear XDR frame buffer memory */
652  memset((void __force *)info->screen_base, 0, info->fix.smem_len);
653 
654  /* Clear DDR frame buffer memory */
655  lines = vmode->yres * par->num_frames;
656  if (par->full_offset)
657  lines++;
658  maxlines = info->fix.smem_len / ddr_line_length;
659  for (dst = 0; lines; dst += maxlines * ddr_line_length) {
660  unsigned int l = min(lines, maxlines);
661  ps3fb_sync_image(info->device, 0, dst, 0, vmode->xres, l,
662  ddr_line_length, ddr_line_length);
663  lines -= l;
664  }
665 
666  return 0;
667 }
668 
669  /*
670  * Set a single color register. The values supplied are already
671  * rounded down to the hardware's capabilities (according to the
672  * entries in the var structure). Return != 0 for invalid regno.
673  */
674 
675 static int ps3fb_setcolreg(unsigned int regno, unsigned int red,
676  unsigned int green, unsigned int blue,
677  unsigned int transp, struct fb_info *info)
678 {
679  if (regno >= 16)
680  return 1;
681 
682  red >>= 8;
683  green >>= 8;
684  blue >>= 8;
685  transp >>= 8;
686 
687  ((u32 *)info->pseudo_palette)[regno] = transp << 24 | red << 16 |
688  green << 8 | blue;
689  return 0;
690 }
691 
692 static int ps3fb_pan_display(struct fb_var_screeninfo *var,
693  struct fb_info *info)
694 {
695  struct ps3fb_par *par = info->par;
696 
697  par->pan_offset = var->yoffset * info->fix.line_length +
698  var->xoffset * BPP;
699  return 0;
700 }
701 
702  /*
703  * As we have a virtual frame buffer, we need our own mmap function
704  */
705 
706 static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
707 {
708  unsigned long size, offset;
709 
710  size = vma->vm_end - vma->vm_start;
711  offset = vma->vm_pgoff << PAGE_SHIFT;
712  if (offset + size > info->fix.smem_len)
713  return -EINVAL;
714 
715  offset += info->fix.smem_start;
716  if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
717  size, vma->vm_page_prot))
718  return -EAGAIN;
719 
720  dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
721  offset, vma->vm_start);
722  return 0;
723 }
724 
725  /*
726  * Blank the display
727  */
728 
729 static int ps3fb_blank(int blank, struct fb_info *info)
730 {
731  int retval;
732 
733  dev_dbg(info->device, "%s: blank:%d\n", __func__, blank);
734  switch (blank) {
735  case FB_BLANK_POWERDOWN:
736  case FB_BLANK_HSYNC_SUSPEND:
737  case FB_BLANK_VSYNC_SUSPEND:
738  case FB_BLANK_NORMAL:
739  retval = ps3av_video_mute(1); /* mute on */
740  if (!retval)
741  ps3fb.is_blanked = 1;
742  break;
743 
744  default: /* unblank */
745  retval = ps3av_video_mute(0); /* mute off */
746  if (!retval)
747  ps3fb.is_blanked = 0;
748  break;
749  }
750  return retval;
751 }
752 
753 static int ps3fb_get_vblank(struct fb_vblank *vblank)
754 {
755  memset(vblank, 0, sizeof(*vblank));
756  vblank->flags = FB_VBLANK_HAVE_VSYNC;
757  return 0;
758 }
759 
760 static int ps3fb_wait_for_vsync(u32 crtc)
761 {
762  int ret;
763  u64 count;
764 
765  count = ps3fb.vblank_count;
766  ret = wait_event_interruptible_timeout(ps3fb.wait_vsync,
767  count != ps3fb.vblank_count,
768  HZ / 10);
769  if (!ret)
770  return -ETIMEDOUT;
771 
772  return 0;
773 }
774 
775 
776  /*
777  * ioctl
778  */
779 
780 static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
781  unsigned long arg)
782 {
783  void __user *argp = (void __user *)arg;
784  u32 val;
785  int retval = -EFAULT;
786 
787  switch (cmd) {
788  case FBIOGET_VBLANK:
789  {
790  struct fb_vblank vblank;
791  dev_dbg(info->device, "FBIOGET_VBLANK:\n");
792  retval = ps3fb_get_vblank(&vblank);
793  if (retval)
794  break;
795 
796  if (copy_to_user(argp, &vblank, sizeof(vblank)))
797  retval = -EFAULT;
798  break;
799  }
800 
801  case FBIO_WAITFORVSYNC:
802  {
803  u32 crt;
804  dev_dbg(info->device, "FBIO_WAITFORVSYNC:\n");
805  if (get_user(crt, (u32 __user *) arg))
806  break;
807 
808  retval = ps3fb_wait_for_vsync(crt);
809  break;
810  }
811 
812  case PS3FB_IOCTL_SETMODE:
813  {
814  struct ps3fb_par *par = info->par;
815  const struct fb_videomode *vmode;
816  struct fb_var_screeninfo var;
817 
818  if (copy_from_user(&val, argp, sizeof(val)))
819  break;
820 
821  if (!(val & PS3AV_MODE_MASK)) {
822  u32 id = ps3av_get_auto_mode();
823  if (id > 0)
824  val = (val & ~PS3AV_MODE_MASK) | id;
825  }
826  dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
827  retval = -EINVAL;
828  vmode = ps3fb_vmode(val);
829  if (vmode) {
830  var = info->var;
831  fb_videomode_to_var(&var, vmode);
832  console_lock();
833  info->flags |= FBINFO_MISC_USEREVENT;
834  /* Force, in case only special bits changed */
835  var.activate |= FB_ACTIVATE_FORCE;
836  par->new_mode_id = val;
837  retval = fb_set_var(info, &var);
838  info->flags &= ~FBINFO_MISC_USEREVENT;
839  console_unlock();
840  }
841  break;
842  }
843 
844  case PS3FB_IOCTL_GETMODE:
845  val = ps3av_get_mode();
846  dev_dbg(info->device, "PS3FB_IOCTL_GETMODE:%x\n", val);
847  if (!copy_to_user(argp, &val, sizeof(val)))
848  retval = 0;
849  break;
850 
851  case PS3FB_IOCTL_SCREENINFO:
852  {
853  struct ps3fb_par *par = info->par;
854  struct ps3fb_ioctl_res res;
855  dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
856  res.xres = info->fix.line_length / BPP;
857  res.yres = info->var.yres_virtual;
858  res.xoff = (res.xres - info->var.xres) / 2;
859  res.yoff = (res.yres - info->var.yres) / 2;
860  res.num_frames = par->num_frames;
861  if (!copy_to_user(argp, &res, sizeof(res)))
862  retval = 0;
863  break;
864  }
865 
866  case PS3FB_IOCTL_ON:
867  dev_dbg(info->device, "PS3FB_IOCTL_ON:\n");
868  atomic_inc(&ps3fb.ext_flip);
869  retval = 0;
870  break;
871 
872  case PS3FB_IOCTL_OFF:
873  dev_dbg(info->device, "PS3FB_IOCTL_OFF:\n");
874  atomic_dec_if_positive(&ps3fb.ext_flip);
875  retval = 0;
876  break;
877 
878  case PS3FB_IOCTL_FSEL:
879  if (copy_from_user(&val, argp, sizeof(val)))
880  break;
881 
882  dev_dbg(info->device, "PS3FB_IOCTL_FSEL:%d\n", val);
883  console_lock();
884  retval = ps3fb_sync(info, val);
885  console_unlock();
886  break;
887 
888  default:
889  retval = -ENOIOCTLCMD;
890  break;
891  }
892  return retval;
893 }
894 
895 static int ps3fbd(void *arg)
896 {
897  struct fb_info *info = arg;
898 
899  set_freezable();
900  while (!kthread_should_stop()) {
901  try_to_freeze();
902  set_current_state(TASK_INTERRUPTIBLE);
903  if (ps3fb.is_kicked) {
904  ps3fb.is_kicked = 0;
905  console_lock();
906  ps3fb_sync(info, 0); /* single buffer */
907  console_unlock();
908  }
909  schedule();
910  }
911  return 0;
912 }
913 
914 static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
915 {
916  struct device *dev = ptr;
917  u64 v1;
918  int status;
919  struct display_head *head = &ps3fb.dinfo->display_head[1];
920 
921  status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
922  if (status) {
923  dev_err(dev, "%s: lv1_gpu_context_intr failed: %d\n", __func__,
924  status);
925  return IRQ_NONE;
926  }
927 
928  if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
929  /* VSYNC */
930  ps3fb.vblank_count = head->vblank_count;
931  if (ps3fb.task && !ps3fb.is_blanked &&
932  !atomic_read(&ps3fb.ext_flip)) {
933  ps3fb.is_kicked = 1;
934  wake_up_process(ps3fb.task);
935  }
936  wake_up_interruptible(&ps3fb.wait_vsync);
937  }
938 
939  return IRQ_HANDLED;
940 }
941 
942 
943 static struct fb_ops ps3fb_ops = {
944  .fb_open = ps3fb_open,
945  .fb_release = ps3fb_release,
946  .fb_read = fb_sys_read,
947  .fb_write = fb_sys_write,
948  .fb_check_var = ps3fb_check_var,
949  .fb_set_par = ps3fb_set_par,
950  .fb_setcolreg = ps3fb_setcolreg,
951  .fb_pan_display = ps3fb_pan_display,
952  .fb_fillrect = sys_fillrect,
953  .fb_copyarea = sys_copyarea,
954  .fb_imageblit = sys_imageblit,
955  .fb_mmap = ps3fb_mmap,
956  .fb_blank = ps3fb_blank,
957  .fb_ioctl = ps3fb_ioctl,
958  .fb_compat_ioctl = ps3fb_ioctl
959 };
960 
961 static struct fb_fix_screeninfo ps3fb_fix __initdata = {
962  .id = DEVICE_NAME,
963  .type = FB_TYPE_PACKED_PIXELS,
964  .visual = FB_VISUAL_TRUECOLOR,
965  .accel = FB_ACCEL_NONE,
966 };
967 
968 static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
969 {
970  struct fb_info *info;
971  struct ps3fb_par *par;
972  int retval;
973  u64 ddr_lpar = 0;
974  u64 lpar_dma_control = 0;
975  u64 lpar_driver_info = 0;
976  u64 lpar_reports = 0;
977  u64 lpar_reports_size = 0;
978  u64 xdr_lpar;
979  struct gpu_driver_info *dinfo;
980  void *fb_start;
981  int status;
982  struct task_struct *task;
983  unsigned long max_ps3fb_size;
984 
985  if (ps3fb_videomemory.size < GPU_CMD_BUF_SIZE) {
986  dev_err(&dev->core, "%s: Not enough video memory\n", __func__);
987  return -ENOMEM;
988  }
989 
990  retval = ps3_open_hv_device(dev);
991  if (retval) {
992  dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
993  __func__);
994  goto err;
995  }
996 
997  if (!ps3fb_mode)
998  ps3fb_mode = ps3av_get_mode();
999  dev_dbg(&dev->core, "ps3fb_mode: %d\n", ps3fb_mode);
1000 
1001  atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
1002  atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
1003  init_waitqueue_head(&ps3fb.wait_vsync);
1004 
1005 #ifdef HEAD_A
1006  status = lv1_gpu_display_sync(0x0, 0, L1GPU_DISPLAY_SYNC_VSYNC);
1007  if (status) {
1008  dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1009  __func__, status);
1010  retval = -ENODEV;
1011  goto err_close_device;
1012  }
1013 #endif
1014 #ifdef HEAD_B
1015  status = lv1_gpu_display_sync(0x0, 1, L1GPU_DISPLAY_SYNC_VSYNC);
1016  if (status) {
1017  dev_err(&dev->core, "%s: lv1_gpu_display_sync failed: %d\n",
1018  __func__, status);
1019  retval = -ENODEV;
1020  goto err_close_device;
1021  }
1022 #endif
1023 
1024  max_ps3fb_size = _ALIGN_UP(GPU_IOIF, 256*1024*1024) - GPU_IOIF;
1025  if (ps3fb_videomemory.size > max_ps3fb_size) {
1026  dev_info(&dev->core, "Limiting ps3fb mem size to %lu bytes\n",
1027  max_ps3fb_size);
1028  ps3fb_videomemory.size = max_ps3fb_size;
1029  }
1030 
1031  /* get gpu context handle */
1032  status = lv1_gpu_memory_allocate(ps3fb_videomemory.size, 0, 0, 0, 0,
1033  &ps3fb.memory_handle, &ddr_lpar);
1034  if (status) {
1035  dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
1036  __func__, status);
1037  retval = -ENOMEM;
1038  goto err_close_device;
1039  }
1040  dev_dbg(&dev->core, "ddr:lpar:0x%llx\n", ddr_lpar);
1041 
1042  status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
1043  &ps3fb.context_handle,
1044  &lpar_dma_control, &lpar_driver_info,
1045  &lpar_reports, &lpar_reports_size);
1046  if (status) {
1047  dev_err(&dev->core,
1048  "%s: lv1_gpu_context_allocate failed: %d\n", __func__,
1049  status);
1050  retval = -ENOMEM;
1051  goto err_gpu_memory_free;
1052  }
1053 
1054  /* vsync interrupt */
1055  dinfo = (void __force *)ioremap(lpar_driver_info, 128 * 1024);
1056  if (!dinfo) {
1057  dev_err(&dev->core, "%s: ioremap failed\n", __func__);
1058  retval = -ENOMEM;
1059  goto err_gpu_context_free;
1060  }
1061 
1062  ps3fb.dinfo = dinfo;
1063  dev_dbg(&dev->core, "version_driver:%x\n", dinfo->version_driver);
1064  dev_dbg(&dev->core, "irq outlet:%x\n", dinfo->irq.irq_outlet);
1065  dev_dbg(&dev->core, "version_gpu: %x memory_size: %x ch: %x "
1066  "core_freq: %d mem_freq:%d\n", dinfo->version_gpu,
1067  dinfo->memory_size, dinfo->hardware_channel,
1068  dinfo->nvcore_frequency/1000000,
1069  dinfo->memory_frequency/1000000);
1070 
1071  if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
1072  dev_err(&dev->core, "%s: version_driver err:%x\n", __func__,
1073  dinfo->version_driver);
1074  retval = -EINVAL;
1075  goto err_iounmap_dinfo;
1076  }
1077 
1078  retval = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
1079  &ps3fb.irq_no);
1080  if (retval) {
1081  dev_err(&dev->core, "%s: ps3_alloc_irq failed %d\n", __func__,
1082  retval);
1083  goto err_iounmap_dinfo;
1084  }
1085 
1086  retval = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt,
1087  0, DEVICE_NAME, &dev->core);
1088  if (retval) {
1089  dev_err(&dev->core, "%s: request_irq failed %d\n", __func__,
1090  retval);
1091  goto err_destroy_plug;
1092  }
1093 
1094  dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
1095  (1 << GPU_INTR_STATUS_FLIP_1);
1096 
1097  /* Clear memory to prevent kernel info leakage into userspace */
1098  memset(ps3fb_videomemory.address, 0, ps3fb_videomemory.size);
1099 
1100  xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1101 
1102  status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
1103  xdr_lpar, ps3fb_videomemory.size,
1104  CBE_IOPTE_PP_W | CBE_IOPTE_PP_R |
1105  CBE_IOPTE_M);
1106  if (status) {
1107  dev_err(&dev->core, "%s: lv1_gpu_context_iomap failed: %d\n",
1108  __func__, status);
1109  retval = -ENXIO;
1110  goto err_free_irq;
1111  }
1112 
1113  dev_dbg(&dev->core, "video:%p ioif:%lx lpar:%llx size:%lx\n",
1114  ps3fb_videomemory.address, GPU_IOIF, xdr_lpar,
1115  ps3fb_videomemory.size);
1116 
1117  status = lv1_gpu_fb_setup(ps3fb.context_handle, xdr_lpar,
1118  GPU_CMD_BUF_SIZE, GPU_IOIF);
1119  if (status) {
1120  dev_err(&dev->core, "%s: lv1_gpu_fb_setup failed: %d\n",
1121  __func__, status);
1122  retval = -ENXIO;
1123  goto err_context_unmap;
1124  }
1125 
1126  info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
1127  if (!info) {
1128  retval = -ENOMEM;
1129  goto err_context_fb_close;
1130  }
1131 
1132  par = info->par;
1133  par->mode_id = ~ps3fb_mode; /* != ps3fb_mode, to trigger change */
1134  par->new_mode_id = ps3fb_mode;
1135  par->num_frames = 1;
1136 
1137  info->fbops = &ps3fb_ops;
1138  info->fix = ps3fb_fix;
1139 
1140  /*
1141  * The GPU command buffer is at the start of video memory
1142  * As we don't use the full command buffer, we can put the actual
1143  * frame buffer at offset GPU_FB_START and save some precious XDR
1144  * memory
1145  */
1146  fb_start = ps3fb_videomemory.address + GPU_FB_START;
1147  info->screen_base = (char __force __iomem *)fb_start;
1148  info->fix.smem_start = __pa(fb_start);
1149  info->fix.smem_len = ps3fb_videomemory.size - GPU_FB_START;
1150 
1151  info->pseudo_palette = par->pseudo_palette;
1152  info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
1153  FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;
1154 
1155  retval = fb_alloc_cmap(&info->cmap, 256, 0);
1156  if (retval < 0)
1157  goto err_framebuffer_release;
1158 
1159  if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
1160  ARRAY_SIZE(ps3fb_modedb),
1161  ps3fb_vmode(par->new_mode_id), 32)) {
1162  retval = -EINVAL;
1163  goto err_fb_dealloc;
1164  }
1165 
1166  fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
1167  &info->modelist);
1168 
1169  retval = register_framebuffer(info);
1170  if (retval < 0)
1171  goto err_fb_dealloc;
1172 
1173  ps3_system_bus_set_drvdata(dev, info);
1174 
1175  dev_info(info->device, "%s %s, using %u KiB of video memory\n",
1176  dev_driver_string(info->dev), dev_name(info->dev),
1177  info->fix.smem_len >> 10);
1178 
1179  task = kthread_run(ps3fbd, info, DEVICE_NAME);
1180  if (IS_ERR(task)) {
1181  retval = PTR_ERR(task);
1182  goto err_unregister_framebuffer;
1183  }
1184 
1185  ps3fb.task = task;
1186 
1187  return 0;
1188 
1189 err_unregister_framebuffer:
1190  unregister_framebuffer(info);
1191 err_fb_dealloc:
1192  fb_dealloc_cmap(&info->cmap);
1193 err_framebuffer_release:
1194  framebuffer_release(info);
1195 err_context_fb_close:
1196  lv1_gpu_fb_close(ps3fb.context_handle);
1197 err_context_unmap:
1198  lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1199  ps3fb_videomemory.size, CBE_IOPTE_M);
1200 err_free_irq:
1201  free_irq(ps3fb.irq_no, &dev->core);
1202 err_destroy_plug:
1203  ps3_irq_plug_destroy(ps3fb.irq_no);
1204 err_iounmap_dinfo:
1205  iounmap((u8 __force __iomem *)ps3fb.dinfo);
1206 err_gpu_context_free:
1207  lv1_gpu_context_free(ps3fb.context_handle);
1208 err_gpu_memory_free:
1209  lv1_gpu_memory_free(ps3fb.memory_handle);
1210 err_close_device:
1211  ps3_close_hv_device(dev);
1212 err:
1213  return retval;
1214 }
1215 
1216 static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
1217 {
1218  struct fb_info *info = ps3_system_bus_get_drvdata(dev);
1219  u64 xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb_videomemory.address));
1220 
1221  dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
1222 
1223  atomic_inc(&ps3fb.ext_flip); /* flip off */
1224  ps3fb.dinfo->irq.mask = 0;
1225 
1226  if (ps3fb.task) {
1227  struct task_struct *task = ps3fb.task;
1228  ps3fb.task = NULL;
1229  kthread_stop(task);
1230  }
1231  if (ps3fb.irq_no) {
1232  free_irq(ps3fb.irq_no, &dev->core);
1233  ps3_irq_plug_destroy(ps3fb.irq_no);
1234  }
1235  if (info) {
1236  unregister_framebuffer(info);
1237  fb_dealloc_cmap(&info->cmap);
1238  framebuffer_release(info);
1239  ps3_system_bus_set_drvdata(dev, NULL);
1240  }
1241  iounmap((u8 __force __iomem *)ps3fb.dinfo);
1242  lv1_gpu_fb_close(ps3fb.context_handle);
1243  lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
1244  ps3fb_videomemory.size, CBE_IOPTE_M);
1245  lv1_gpu_context_free(ps3fb.context_handle);
1246  lv1_gpu_memory_free(ps3fb.memory_handle);
1247  ps3_close_hv_device(dev);
1248  dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
1249 
1250  return 0;
1251 }
1252 
1253 static struct ps3_system_bus_driver ps3fb_driver = {
1254  .match_id = PS3_MATCH_ID_GPU,
1255  .match_sub_id = PS3_MATCH_SUB_ID_GPU_FB,
1256  .core.name = DEVICE_NAME,
1257  .core.owner = THIS_MODULE,
1258  .probe = ps3fb_probe,
1259  .remove = ps3fb_shutdown,
1260  .shutdown = ps3fb_shutdown,
1261 };
1262 
1263 static int __init ps3fb_setup(void)
1264 {
1265  char *options;
1266 
1267 #ifdef MODULE
1268  return 0;
1269 #endif
1270 
1271  if (fb_get_options(DEVICE_NAME, &options))
1272  return -ENXIO;
1273 
1274  if (!options || !*options)
1275  return 0;
1276 
1277  while (1) {
1278  char *this_opt = strsep(&options, ",");
1279 
1280  if (!this_opt)
1281  break;
1282  if (!*this_opt)
1283  continue;
1284  if (!strncmp(this_opt, "mode:", 5))
1285  ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
1286  else
1287  mode_option = this_opt;
1288  }
1289  return 0;
1290 }
1291 
1292 static int __init ps3fb_init(void)
1293 {
1294  if (!ps3fb_videomemory.address || ps3fb_setup())
1295  return -ENXIO;
1296 
1297  return ps3_system_bus_driver_register(&ps3fb_driver);
1298 }
1299 
1300 static void __exit ps3fb_exit(void)
1301 {
1302  pr_debug(" -> %s:%d\n", __func__, __LINE__);
1303  ps3_system_bus_driver_unregister(&ps3fb_driver);
1304  pr_debug(" <- %s:%d\n", __func__, __LINE__);
1305 }
1306 
1307 module_init(ps3fb_init);
1308 module_exit(ps3fb_exit);
1309 
1310 MODULE_LICENSE("GPL");
1311 MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
1312 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
1313 MODULE_ALIAS(PS3_MODULE_ALIAS_GPU_FB);
Generated on Thu Jan 10 2013 14:41:29 for Linux Kernel by   doxygen 1.8.2