drivers/video/ps3fb.c

   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/abs_addr.h>
  35 #include <asm/lv1call.h>
  36 #include <asm/ps3av.h>
  37 #include <asm/ps3fb.h>
  38 #include <asm/ps3.h>
  39
  40
  41 #define DEVICE_NAME             "ps3fb"
  42
  43 #define L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC    0x101
  44 #define L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP    0x102
  45 #define L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP        0x600
  46 #define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT         0x601
  47 #define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC    0x602
  48
  49 #define L1GPU_FB_BLIT_WAIT_FOR_COMPLETION       (1ULL << 32)
  50
  51 #define L1GPU_DISPLAY_SYNC_HSYNC                1
  52 #define L1GPU_DISPLAY_SYNC_VSYNC                2
  53
  54 #define DDR_SIZE                                (0)     /* used no ddr */
  55 #define GPU_CMD_BUF_SIZE                        (64 * 1024)
  56 #define GPU_IOIF                                (0x0d000000UL)
  57
  58 #define PS3FB_FULL_MODE_BIT                     0x80
  59
  60 #define GPU_INTR_STATUS_VSYNC_0                 0       /* vsync on head A */
  61 #define GPU_INTR_STATUS_VSYNC_1                 1       /* vsync on head B */
  62 #define GPU_INTR_STATUS_FLIP_0                  3       /* flip head A */
  63 #define GPU_INTR_STATUS_FLIP_1                  4       /* flip head B */
  64 #define GPU_INTR_STATUS_QUEUE_0                 5       /* queue head A */
  65 #define GPU_INTR_STATUS_QUEUE_1                 6       /* queue head B */
  66
  67 #define GPU_DRIVER_INFO_VERSION                 0x211
  68
  69 /* gpu internals */
  70 struct display_head {
  71         u64 be_time_stamp;
  72         u32 status;
  73         u32 offset;
  74         u32 res1;
  75         u32 res2;
  76         u32 field;
  77         u32 reserved1;
  78
  79         u64 res3;
  80         u32 raster;
  81
  82         u64 vblank_count;
  83         u32 field_vsync;
  84         u32 reserved2;
  85 };
  86
  87 struct gpu_irq {
  88         u32 irq_outlet;
  89         u32 status;
  90         u32 mask;
  91         u32 video_cause;
  92         u32 graph_cause;
  93         u32 user_cause;
  94
  95         u32 res1;
  96         u64 res2;
  97
  98         u32 reserved[4];
  99 };
 100
 101 struct gpu_driver_info {
 102         u32 version_driver;
 103         u32 version_gpu;
 104         u32 memory_size;
 105         u32 hardware_channel;
 106
 107         u32 nvcore_frequency;
 108         u32 memory_frequency;
 109
 110         u32 reserved[1063];
 111         struct display_head display_head[8];
 112         struct gpu_irq irq;
 113 };
 114
 115 struct ps3fb_priv {
 116         unsigned int irq_no;
 117
 118         u64 context_handle, memory_handle;
 119         void *xdr_ea;
 120         size_t xdr_size;
 121         struct gpu_driver_info *dinfo;
 122         u32 res_index;
 123
 124         u64 vblank_count;       /* frame count */
 125         wait_queue_head_t wait_vsync;
 126
 127         u32 num_frames;         /* num of frame buffers */
 128         atomic_t ext_flip;      /* on/off flip with vsync */
 129         atomic_t f_count;       /* fb_open count */
 130         int is_blanked;
 131         int is_kicked;
 132         struct task_struct *task;
 133 };
 134 static struct ps3fb_priv ps3fb;
 135
 136 struct ps3fb_res_table {
 137         u32 xres;
 138         u32 yres;
 139         u32 xoff;
 140         u32 yoff;
 141         u32 type;
 142 };
 143 #define PS3FB_RES_FULL 1
 144 static const struct ps3fb_res_table ps3fb_res[] = {
 145         /* res_x,y   margin_x,y  full */
 146         {  720,  480,  72,  48 , 0},
 147         {  720,  576,  72,  58 , 0},
 148         { 1280,  720,  78,  38 , 0},
 149         { 1920, 1080, 116,  58 , 0},
 150         /* full mode */
 151         {  720,  480,   0,   0 , PS3FB_RES_FULL},
 152         {  720,  576,   0,   0 , PS3FB_RES_FULL},
 153         { 1280,  720,   0,   0 , PS3FB_RES_FULL},
 154         { 1920, 1080,   0,   0 , PS3FB_RES_FULL},
 155         /* vesa: normally full mode */
 156         { 1280,  768,   0,   0 , 0},
 157         { 1280, 1024,   0,   0 , 0},
 158         { 1920, 1200,   0,   0 , 0},
 159         {    0,    0,   0,   0 , 0} };
 160
 161 /* default resolution */
 162 #define GPU_RES_INDEX   0               /* 720 x 480 */
 163
 164 static const struct fb_videomode ps3fb_modedb[] = {
 165     /* 60 Hz broadcast modes (modes "1" to "5") */
 166     {
 167         /* 480i */
 168         "480i", 60, 576, 384, 74074, 130, 89, 78, 57, 63, 6,
 169         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 170     },    {
 171         /* 480p */
 172         "480p", 60, 576, 384, 37037, 130, 89, 78, 57, 63, 6,
 173         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 174     },    {
 175         /* 720p */
 176         "720p", 60, 1124, 644, 13481, 298, 148, 57, 44, 80, 5,
 177         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 178     },    {
 179         /* 1080i */
 180         "1080i", 60, 1688, 964, 13481, 264, 160, 94, 62, 88, 5,
 181         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 182     },    {
 183         /* 1080p */
 184         "1080p", 60, 1688, 964, 6741, 264, 160, 94, 62, 88, 5,
 185         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 186     },
 187
 188     /* 50 Hz broadcast modes (modes "6" to "10") */
 189     {
 190         /* 576i */
 191         "576i", 50, 576, 460, 74074, 142, 83, 97, 63, 63, 5,
 192         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 193     },    {
 194         /* 576p */
 195         "576p", 50, 576, 460, 37037, 142, 83, 97, 63, 63, 5,
 196         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 197     },    {
 198         /* 720p */
 199         "720p", 50, 1124, 644, 13468, 298, 478, 57, 44, 80, 5,
 200         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 201     },    {
 202         /* 1080 */
 203         "1080i", 50, 1688, 964, 13468, 264, 600, 94, 62, 88, 5,
 204         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 205     },    {
 206         /* 1080p */
 207         "1080p", 50, 1688, 964, 6734, 264, 600, 94, 62, 88, 5,
 208         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 209     },
 210
 211     /* VESA modes (modes "11" to "13") */
 212     {
 213         /* WXGA */
 214         "wxga", 60, 1280, 768, 12924, 160, 24, 29, 3, 136, 6,
 215         0, FB_VMODE_NONINTERLACED,
 216         FB_MODE_IS_VESA
 217     }, {
 218         /* SXGA */
 219         "sxga", 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3,
 220         FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED,
 221         FB_MODE_IS_VESA
 222     }, {
 223         /* WUXGA */
 224         "wuxga", 60, 1920, 1200, 6494, 80, 48, 26, 3, 32, 6,
 225         FB_SYNC_HOR_HIGH_ACT, FB_VMODE_NONINTERLACED,
 226         FB_MODE_IS_VESA
 227     },
 228
 229     /* 60 Hz broadcast modes (full resolution versions of modes "1" to "5") */
 230     {
 231         /* 480if */
 232         "480if", 60, 720, 480, 74074, 58, 17, 30, 9, 63, 6,
 233         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 234     }, {
 235         /* 480pf */
 236         "480pf", 60, 720, 480, 37037, 58, 17, 30, 9, 63, 6,
 237         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 238     }, {
 239         /* 720pf */
 240         "720pf", 60, 1280, 720, 13481, 220, 70, 19, 6, 80, 5,
 241         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 242     }, {
 243         /* 1080if */
 244         "1080if", 60, 1920, 1080, 13481, 148, 44, 36, 4, 88, 5,
 245         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 246     }, {
 247         /* 1080pf */
 248         "1080pf", 60, 1920, 1080, 6741, 148, 44, 36, 4, 88, 5,
 249         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 250     },
 251
 252     /* 50 Hz broadcast modes (full resolution versions of modes "6" to "10") */
 253     {
 254         /* 576if */
 255         "576if", 50, 720, 576, 74074, 70, 11, 39, 5, 63, 5,
 256         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 257     }, {
 258         /* 576pf */
 259         "576pf", 50, 720, 576, 37037, 70, 11, 39, 5, 63, 5,
 260         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 261     }, {
 262         /* 720pf */
 263         "720pf", 50, 1280, 720, 13468, 220, 400, 19, 6, 80, 5,
 264         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 265     }, {
 266         /* 1080if */
 267         "1080f", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
 268         FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
 269     }, {
 270         /* 1080pf */
 271         "1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
 272         FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
 273     }
 274 };
 275
 276
 277 #define HEAD_A
 278 #define HEAD_B
 279
 280 #define X_OFF(i)        (ps3fb_res[i].xoff)     /* left/right margin (pixel) */
 281 #define Y_OFF(i)        (ps3fb_res[i].yoff)     /* top/bottom margin (pixel) */
 282 #define WIDTH(i)        (ps3fb_res[i].xres)     /* width of FB */
 283 #define HEIGHT(i)       (ps3fb_res[i].yres)     /* height of FB */
 284 #define BPP             4                       /* number of bytes per pixel */
 285
 286 /* Start of the virtual frame buffer (relative to fullscreen ) */
 287 #define VP_OFF(i)       ((WIDTH(i) * Y_OFF(i) + X_OFF(i)) * BPP)
 288
 289 /*
 290  * Start of the virtual frame buffer (relative to start of video memory)
 291  * This is PAGE_SIZE aligned for easier mmap()
 292  */
 293 #define VFB_OFF(i)      PAGE_ALIGN(VP_OFF(i))
 294
 295 /* Start of the fullscreen frame buffer (relative to start of video memory) */
 296 #define FB_OFF(i)       (-VP_OFF(i) & ~PAGE_MASK)
 297
 298
 299 static int ps3fb_mode;
 300 module_param(ps3fb_mode, int, 0);
 301
 302 static char *mode_option __devinitdata;
 303
 304 static int ps3fb_get_res_table(u32 xres, u32 yres, int mode)
 305 {
 306         int full_mode;
 307         unsigned int i;
 308         u32 x, y, f;
 309
 310         full_mode = (mode & PS3FB_FULL_MODE_BIT) ? PS3FB_RES_FULL : 0;
 311         for (i = 0;; i++) {
 312                 x = ps3fb_res[i].xres;
 313                 y = ps3fb_res[i].yres;
 314                 f = ps3fb_res[i].type;
 315
 316                 if (!x) {
 317                         pr_debug("ERROR: ps3fb_get_res_table()\n");
 318                         return -1;
 319                 }
 320
 321                 if (full_mode == PS3FB_RES_FULL && f != PS3FB_RES_FULL)
 322                         continue;
 323
 324                 if (x == xres && (yres == 0 || y == yres))
 325                         break;
 326
 327                 x = x - 2 * ps3fb_res[i].xoff;
 328                 y = y - 2 * ps3fb_res[i].yoff;
 329                 if (x == xres && (yres == 0 || y == yres))
 330                         break;
 331         }
 332         return i;
 333 }
 334
 335 static unsigned int ps3fb_find_mode(const struct fb_var_screeninfo *var,
 336                                     u32 *line_length)
 337 {
 338         unsigned int i, mode;
 339
 340         for (i = 0; i < ARRAY_SIZE(ps3fb_modedb); i++)
 341                 if (var->xres == ps3fb_modedb[i].xres &&
 342                     var->yres == ps3fb_modedb[i].yres &&
 343                     var->pixclock == ps3fb_modedb[i].pixclock &&
 344                     var->hsync_len == ps3fb_modedb[i].hsync_len &&
 345                     var->vsync_len == ps3fb_modedb[i].vsync_len &&
 346                     var->left_margin == ps3fb_modedb[i].left_margin &&
 347                     var->right_margin == ps3fb_modedb[i].right_margin &&
 348                     var->upper_margin == ps3fb_modedb[i].upper_margin &&
 349                     var->lower_margin == ps3fb_modedb[i].lower_margin &&
 350                     var->sync == ps3fb_modedb[i].sync &&
 351                     (var->vmode & FB_VMODE_MASK) == ps3fb_modedb[i].vmode) {
 352                         /* Cropped broadcast modes use the full line_length */
 353                         *line_length =
 354                             ps3fb_modedb[i < 10 ? i + 13 : i].xres * 4;
 355                         /* Full broadcast modes have the full mode bit set */
 356                         mode = i > 12 ? (i - 12) | PS3FB_FULL_MODE_BIT : i + 1;
 357
 358                         pr_debug("ps3fb_find_mode: mode %u\n", mode);
 359                         return mode;
 360                 }
 361
 362         pr_debug("ps3fb_find_mode: mode not found\n");
 363         return 0;
 364
 365 }
 366
 367 static const struct fb_videomode *ps3fb_default_mode(void)
 368 {
 369         u32 mode = ps3fb_mode & PS3AV_MODE_MASK;
 370         u32 flags;
 371
 372         if (mode < 1 || mode > 13)
 373                 return NULL;
 374
 375         flags = ps3fb_mode & ~PS3AV_MODE_MASK;
 376
 377         if (mode <= 10 && flags & PS3FB_FULL_MODE_BIT) {
 378                 /* Full broadcast mode */
 379                 return &ps3fb_modedb[mode + 12];
 380         }
 381
 382         return &ps3fb_modedb[mode - 1];
 383 }
 384
 385 static int ps3fb_sync(struct fb_info *info, u32 frame)
 386 {
 387         int i, status;
 388         u32 xres, yres;
 389         u64 fb_ioif, offset;
 390
 391         i = ps3fb.res_index;
 392         xres = ps3fb_res[i].xres;
 393         yres = ps3fb_res[i].yres;
 394
 395         if (frame > ps3fb.num_frames - 1) {
 396                 dev_dbg(info->device, "%s: invalid frame number (%u)\n",
 397                         __func__, frame);
 398                 return -EINVAL;
 399         }
 400         offset = xres * yres * BPP * frame;
 401
 402         fb_ioif = GPU_IOIF + FB_OFF(i) + offset;
 403         status = lv1_gpu_context_attribute(ps3fb.context_handle,
 404                                            L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT,
 405                                            offset, fb_ioif,
 406                                            L1GPU_FB_BLIT_WAIT_FOR_COMPLETION |
 407                                            (xres << 16) | yres,
 408                                            xres * BPP); /* line_length */
 409         if (status)
 410                 dev_err(info->device,
 411                         "%s: lv1_gpu_context_attribute FB_BLIT failed: %d\n",
 412                         __func__, status);
 413 #ifdef HEAD_A
 414         status = lv1_gpu_context_attribute(ps3fb.context_handle,
 415                                            L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP,
 416                                            0, offset, 0, 0);
 417         if (status)
 418                 dev_err(info->device,
 419                         "%s: lv1_gpu_context_attribute FLIP failed: %d\n",
 420                         __func__, status);
 421 #endif
 422 #ifdef HEAD_B
 423         status = lv1_gpu_context_attribute(ps3fb.context_handle,
 424                                            L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_FLIP,
 425                                            1, offset, 0, 0);
 426         if (status)
 427                 dev_err(info->device,
 428                         "%s: lv1_gpu_context_attribute FLIP failed: %d\n",
 429                         __func__, status);
 430 #endif
 431         return 0;
 432 }
 433
 434
 435 static int ps3fb_open(struct fb_info *info, int user)
 436 {
 437         atomic_inc(&ps3fb.f_count);
 438         return 0;
 439 }
 440
 441 static int ps3fb_release(struct fb_info *info, int user)
 442 {
 443         if (atomic_dec_and_test(&ps3fb.f_count)) {
 444                 if (atomic_read(&ps3fb.ext_flip)) {
 445                         atomic_set(&ps3fb.ext_flip, 0);
 446                         ps3fb_sync(info, 0);    /* single buffer */
 447                 }
 448         }
 449         return 0;
 450 }
 451
 452     /*
 453      *  Setting the video mode has been split into two parts.
 454      *  First part, xxxfb_check_var, must not write anything
 455      *  to hardware, it should only verify and adjust var.
 456      *  This means it doesn't alter par but it does use hardware
 457      *  data from it to check this var.
 458      */
 459
 460 static int ps3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 461 {
 462         u32 line_length;
 463         int mode;
 464         int i;
 465
 466         dev_dbg(info->device, "var->xres:%u info->var.xres:%u\n", var->xres,
 467                 info->var.xres);
 468         dev_dbg(info->device, "var->yres:%u info->var.yres:%u\n", var->yres,
 469                 info->var.yres);
 470
 471         /* FIXME For now we do exact matches only */
 472         mode = ps3fb_find_mode(var, &line_length);
 473         if (!mode)
 474                 return -EINVAL;
 475
 476         /*
 477          *  FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal!
 478          *  as FB_VMODE_SMOOTH_XPAN is only used internally
 479          */
 480
 481         if (var->vmode & FB_VMODE_CONUPDATE) {
 482                 var->vmode |= FB_VMODE_YWRAP;
 483                 var->xoffset = info->var.xoffset;
 484                 var->yoffset = info->var.yoffset;
 485         }
 486
 487         /* Virtual screen and panning are not supported */
 488         if (var->xres_virtual > var->xres || var->yres_virtual > var->yres ||
 489             var->xoffset || var->yoffset) {
 490                 dev_dbg(info->device,
 491                         "Virtual screen and panning are not supported\n");
 492                 return -EINVAL;
 493         }
 494
 495         var->xres_virtual = var->xres;
 496         var->yres_virtual = var->yres;
 497
 498         /* We support ARGB8888 only */
 499         if (var->bits_per_pixel > 32 || var->grayscale ||
 500             var->red.offset > 16 || var->green.offset > 8 ||
 501             var->blue.offset > 0 || var->transp.offset > 24 ||
 502             var->red.length > 8 || var->green.length > 8 ||
 503             var->blue.length > 8 || var->transp.length > 8 ||
 504             var->red.msb_right || var->green.msb_right ||
 505             var->blue.msb_right || var->transp.msb_right || var->nonstd) {
 506                 dev_dbg(info->device, "We support ARGB8888 only\n");
 507                 return -EINVAL;
 508         }
 509
 510         var->bits_per_pixel = 32;
 511         var->red.offset = 16;
 512         var->green.offset = 8;
 513         var->blue.offset = 0;
 514         var->transp.offset = 24;
 515         var->red.length = 8;
 516         var->green.length = 8;
 517         var->blue.length = 8;
 518         var->transp.length = 8;
 519         var->red.msb_right = 0;
 520         var->green.msb_right = 0;
 521         var->blue.msb_right = 0;
 522         var->transp.msb_right = 0;
 523
 524         /* Rotation is not supported */
 525         if (var->rotate) {
 526                 dev_dbg(info->device, "Rotation is not supported\n");
 527                 return -EINVAL;
 528         }
 529
 530         /* Memory limit */
 531         i = ps3fb_get_res_table(var->xres, var->yres, mode);
 532         if (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP >
 533             ps3fb.xdr_size - VFB_OFF(i)) {
 534                 dev_dbg(info->device, "Not enough memory\n");
 535                 return -ENOMEM;
 536         }
 537
 538         var->height = -1;
 539         var->width = -1;
 540
 541         return 0;
 542 }
 543
 544     /*
 545      * This routine actually sets the video mode.
 546      */
 547
 548 static int ps3fb_set_par(struct fb_info *info)
 549 {
 550         unsigned int mode;
 551         int i;
 552         unsigned long offset;
 553
 554         dev_dbg(info->device, "xres:%d xv:%d yres:%d yv:%d clock:%d\n",
 555                 info->var.xres, info->var.xres_virtual,
 556                 info->var.yres, info->var.yres_virtual, info->var.pixclock);
 557
 558         mode = ps3fb_find_mode(&info->var, &info->fix.line_length);
 559         if (!mode)
 560                 return -EINVAL;
 561
 562         i = ps3fb_get_res_table(info->var.xres, info->var.yres, mode);
 563         ps3fb.res_index = i;
 564
 565         offset = VFB_OFF(i);
 566         info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset;
 567         info->fix.smem_len = ps3fb.xdr_size - offset;
 568         info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
 569         memset(ps3fb.xdr_ea, 0, ps3fb.xdr_size);
 570
 571         ps3fb.num_frames = info->fix.smem_len/
 572                            (ps3fb_res[i].xres*ps3fb_res[i].yres*BPP);
 573
 574         /* Keep the special bits we cannot set using fb_var_screeninfo */
 575         ps3fb_mode = (ps3fb_mode & ~PS3AV_MODE_MASK) | mode;
 576
 577         if (ps3av_set_video_mode(ps3fb_mode))
 578                 return -EINVAL;
 579
 580         return 0;
 581 }
 582
 583     /*
 584      *  Set a single color register. The values supplied are already
 585      *  rounded down to the hardware's capabilities (according to the
 586      *  entries in the var structure). Return != 0 for invalid regno.
 587      */
 588
 589 static int ps3fb_setcolreg(unsigned int regno, unsigned int red,
 590                            unsigned int green, unsigned int blue,
 591                            unsigned int transp, struct fb_info *info)
 592 {
 593         if (regno >= 16)
 594                 return 1;
 595
 596         red >>= 8;
 597         green >>= 8;
 598         blue >>= 8;
 599         transp >>= 8;
 600
 601         ((u32 *)info->pseudo_palette)[regno] = transp << 24 | red << 16 |
 602                                                green << 8 | blue;
 603         return 0;
 604 }
 605
 606     /*
 607      *  As we have a virtual frame buffer, we need our own mmap function
 608      */
 609
 610 static int ps3fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
 611 {
 612         unsigned long size, offset;
 613
 614         size = vma->vm_end - vma->vm_start;
 615         offset = vma->vm_pgoff << PAGE_SHIFT;
 616         if (offset + size > info->fix.smem_len)
 617                 return -EINVAL;
 618
 619         offset += info->fix.smem_start;
 620         if (remap_pfn_range(vma, vma->vm_start, offset >> PAGE_SHIFT,
 621                             size, vma->vm_page_prot))
 622                 return -EAGAIN;
 623
 624         dev_dbg(info->device, "ps3fb: mmap framebuffer P(%lx)->V(%lx)\n",
 625                 offset, vma->vm_start);
 626         return 0;
 627 }
 628
 629     /*
 630      * Blank the display
 631      */
 632
 633 static int ps3fb_blank(int blank, struct fb_info *info)
 634 {
 635         int retval;
 636
 637         dev_dbg(info->device, "%s: blank:%d\n", __func__, blank);
 638         switch (blank) {
 639         case FB_BLANK_POWERDOWN:
 640         case FB_BLANK_HSYNC_SUSPEND:
 641         case FB_BLANK_VSYNC_SUSPEND:
 642         case FB_BLANK_NORMAL:
 643                 retval = ps3av_video_mute(1);   /* mute on */
 644                 if (!retval)
 645                         ps3fb.is_blanked = 1;
 646                 break;
 647
 648         default:                /* unblank */
 649                 retval = ps3av_video_mute(0);   /* mute off */
 650                 if (!retval)
 651                         ps3fb.is_blanked = 0;
 652                 break;
 653         }
 654         return retval;
 655 }
 656
 657 static int ps3fb_get_vblank(struct fb_vblank *vblank)
 658 {
 659         memset(vblank, 0, sizeof(&vblank));
 660         vblank->flags = FB_VBLANK_HAVE_VSYNC;
 661         return 0;
 662 }
 663
 664 static int ps3fb_wait_for_vsync(u32 crtc)
 665 {
 666         int ret;
 667         u64 count;
 668
 669         count = ps3fb.vblank_count;
 670         ret = wait_event_interruptible_timeout(ps3fb.wait_vsync,
 671                                                count != ps3fb.vblank_count,
 672                                                HZ / 10);
 673         if (!ret)
 674                 return -ETIMEDOUT;
 675
 676         return 0;
 677 }
 678
 679 static void ps3fb_flip_ctl(int on, void *data)
 680 {
 681         struct ps3fb_priv *priv = data;
 682         if (on)
 683                 atomic_dec_if_positive(&priv->ext_flip);
 684         else
 685                 atomic_inc(&priv->ext_flip);
 686 }
 687
 688
 689     /*
 690      * ioctl
 691      */
 692
 693 static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
 694                        unsigned long arg)
 695 {
 696         void __user *argp = (void __user *)arg;
 697         u32 val, old_mode;
 698         int retval = -EFAULT;
 699
 700         switch (cmd) {
 701         case FBIOGET_VBLANK:
 702                 {
 703                         struct fb_vblank vblank;
 704                         dev_dbg(info->device, "FBIOGET_VBLANK:\n");
 705                         retval = ps3fb_get_vblank(&vblank);
 706                         if (retval)
 707                                 break;
 708
 709                         if (copy_to_user(argp, &vblank, sizeof(vblank)))
 710                                 retval = -EFAULT;
 711                         break;
 712                 }
 713
 714         case FBIO_WAITFORVSYNC:
 715                 {
 716                         u32 crt;
 717                         dev_dbg(info->device, "FBIO_WAITFORVSYNC:\n");
 718                         if (get_user(crt, (u32 __user *) arg))
 719                                 break;
 720
 721                         retval = ps3fb_wait_for_vsync(crt);
 722                         break;
 723                 }
 724
 725         case PS3FB_IOCTL_SETMODE:
 726                 {
 727                         const struct fb_videomode *mode;
 728                         struct fb_var_screeninfo var;
 729
 730                         if (copy_from_user(&val, argp, sizeof(val)))
 731                                 break;
 732
 733                         if (!(val & PS3AV_MODE_MASK)) {
 734                                 u32 id = ps3av_get_auto_mode();
 735                                 if (id > 0)
 736                                         val = (val & ~PS3AV_MODE_MASK) | id;
 737                         }
 738                         dev_dbg(info->device, "PS3FB_IOCTL_SETMODE:%x\n", val);
 739                         retval = -EINVAL;
 740                         old_mode = ps3fb_mode;
 741                         ps3fb_mode = val;
 742                         mode = ps3fb_default_mode();
 743                         if (mode) {
 744                                 var = info->var;
 745                                 fb_videomode_to_var(&var, mode);
 746                                 acquire_console_sem();
 747                                 info->flags |= FBINFO_MISC_USEREVENT;
 748                                 /* Force, in case only special bits changed */
 749                                 var.activate |= FB_ACTIVATE_FORCE;
 750                                 retval = fb_set_var(info, &var);
 751                                 info->flags &= ~FBINFO_MISC_USEREVENT;
 752                                 release_console_sem();
 753                         }
 754                         if (retval)
 755                                 ps3fb_mode = old_mode;
 756                         break;
 757                 }
 758
 759         case PS3FB_IOCTL_GETMODE:
 760                 val = ps3av_get_mode();
 761                 dev_dbg(info->device, "PS3FB_IOCTL_GETMODE:%x\n", val);
 762                 if (!copy_to_user(argp, &val, sizeof(val)))
 763                         retval = 0;
 764                 break;
 765
 766         case PS3FB_IOCTL_SCREENINFO:
 767                 {
 768                         struct ps3fb_ioctl_res res;
 769                         int i = ps3fb.res_index;
 770                         dev_dbg(info->device, "PS3FB_IOCTL_SCREENINFO:\n");
 771                         res.xres = ps3fb_res[i].xres;
 772                         res.yres = ps3fb_res[i].yres;
 773                         res.xoff = ps3fb_res[i].xoff;
 774                         res.yoff = ps3fb_res[i].yoff;
 775                         res.num_frames = ps3fb.num_frames;
 776                         if (!copy_to_user(argp, &res, sizeof(res)))
 777                                 retval = 0;
 778                         break;
 779                 }
 780
 781         case PS3FB_IOCTL_ON:
 782                 dev_dbg(info->device, "PS3FB_IOCTL_ON:\n");
 783                 atomic_inc(&ps3fb.ext_flip);
 784                 retval = 0;
 785                 break;
 786
 787         case PS3FB_IOCTL_OFF:
 788                 dev_dbg(info->device, "PS3FB_IOCTL_OFF:\n");
 789                 atomic_dec_if_positive(&ps3fb.ext_flip);
 790                 retval = 0;
 791                 break;
 792
 793         case PS3FB_IOCTL_FSEL:
 794                 if (copy_from_user(&val, argp, sizeof(val)))
 795                         break;
 796
 797                 dev_dbg(info->device, "PS3FB_IOCTL_FSEL:%d\n", val);
 798                 retval = ps3fb_sync(info, val);
 799                 break;
 800
 801         default:
 802                 retval = -ENOIOCTLCMD;
 803                 break;
 804         }
 805         return retval;
 806 }
 807
 808 static int ps3fbd(void *arg)
 809 {
 810         struct fb_info *info = arg;
 811
 812         set_freezable();
 813         while (!kthread_should_stop()) {
 814                 try_to_freeze();
 815                 set_current_state(TASK_INTERRUPTIBLE);
 816                 if (ps3fb.is_kicked) {
 817                         ps3fb.is_kicked = 0;
 818                         ps3fb_sync(info, 0);    /* single buffer */
 819                 }
 820                 schedule();
 821         }
 822         return 0;
 823 }
 824
 825 static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
 826 {
 827         struct device *dev = ptr;
 828         u64 v1;
 829         int status;
 830         struct display_head *head = &ps3fb.dinfo->display_head[1];
 831
 832         status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
 833         if (status) {
 834                 dev_err(dev, "%s: lv1_gpu_context_intr failed: %d\n", __func__,
 835                         status);
 836                 return IRQ_NONE;
 837         }
 838
 839         if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
 840                 /* VSYNC */
 841                 ps3fb.vblank_count = head->vblank_count;
 842                 if (ps3fb.task && !ps3fb.is_blanked &&
 843                     !atomic_read(&ps3fb.ext_flip)) {
 844                         ps3fb.is_kicked = 1;
 845                         wake_up_process(ps3fb.task);
 846                 }
 847                 wake_up_interruptible(&ps3fb.wait_vsync);
 848         }
 849
 850         return IRQ_HANDLED;
 851 }
 852
 853
 854 static int ps3fb_vsync_settings(struct gpu_driver_info *dinfo,
 855                                 struct device *dev)
 856 {
 857         int error;
 858
 859         dev_dbg(dev, "version_driver:%x\n", dinfo->version_driver);
 860         dev_dbg(dev, "irq outlet:%x\n", dinfo->irq.irq_outlet);
 861         dev_dbg(dev,
 862                 "version_gpu: %x memory_size: %x ch: %x core_freq: %d "
 863                 "mem_freq:%d\n",
 864                 dinfo->version_gpu, dinfo->memory_size, dinfo->hardware_channel,
 865                 dinfo->nvcore_frequency/1000000, dinfo->memory_frequency/1000000);
 866
 867         if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
 868                 dev_err(dev, "%s: version_driver err:%x\n", __func__,
 869                         dinfo->version_driver);
 870                 return -EINVAL;
 871         }
 872
 873         error = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
 874                                    &ps3fb.irq_no);
 875         if (error) {
 876                 dev_err(dev, "%s: ps3_alloc_irq failed %d\n", __func__, error);
 877                 return error;
 878         }
 879
 880         error = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt, IRQF_DISABLED,
 881                             DEVICE_NAME, dev);
 882         if (error) {
 883                 dev_err(dev, "%s: request_irq failed %d\n", __func__, error);
 884                 ps3_irq_plug_destroy(ps3fb.irq_no);
 885                 return error;
 886         }
 887
 888         dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
 889                           (1 << GPU_INTR_STATUS_FLIP_1);
 890         return 0;
 891 }
 892
 893 static int ps3fb_xdr_settings(u64 xdr_lpar, struct device *dev)
 894 {
 895         int status;
 896
 897         status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
 898                                        xdr_lpar, ps3fb_videomemory.size, 0);
 899         if (status) {
 900                 dev_err(dev, "%s: lv1_gpu_context_iomap failed: %d\n",
 901                         __func__, status);
 902                 return -ENXIO;
 903         }
 904         dev_dbg(dev,
 905                 "video:%p xdr_ea:%p ioif:%lx lpar:%lx phys:%lx size:%lx\n",
 906                 ps3fb_videomemory.address, ps3fb.xdr_ea, GPU_IOIF, xdr_lpar,
 907                 virt_to_abs(ps3fb.xdr_ea), ps3fb_videomemory.size);
 908
 909         status = lv1_gpu_context_attribute(ps3fb.context_handle,
 910                                            L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
 911                                            xdr_lpar + ps3fb.xdr_size,
 912                                            GPU_CMD_BUF_SIZE,
 913                                            GPU_IOIF + ps3fb.xdr_size, 0);
 914         if (status) {
 915                 dev_err(dev,
 916                         "%s: lv1_gpu_context_attribute FB_SETUP failed: %d\n",
 917                         __func__, status);
 918                 return -ENXIO;
 919         }
 920         return 0;
 921 }
 922
 923 static struct fb_ops ps3fb_ops = {
 924         .fb_open        = ps3fb_open,
 925         .fb_release     = ps3fb_release,
 926         .fb_read        = fb_sys_read,
 927         .fb_write       = fb_sys_write,
 928         .fb_check_var   = ps3fb_check_var,
 929         .fb_set_par     = ps3fb_set_par,
 930         .fb_setcolreg   = ps3fb_setcolreg,
 931         .fb_fillrect    = sys_fillrect,
 932         .fb_copyarea    = sys_copyarea,
 933         .fb_imageblit   = sys_imageblit,
 934         .fb_mmap        = ps3fb_mmap,
 935         .fb_blank       = ps3fb_blank,
 936         .fb_ioctl       = ps3fb_ioctl,
 937         .fb_compat_ioctl = ps3fb_ioctl
 938 };
 939
 940 static struct fb_fix_screeninfo ps3fb_fix __initdata = {
 941         .id =           DEVICE_NAME,
 942         .type =         FB_TYPE_PACKED_PIXELS,
 943         .visual =       FB_VISUAL_TRUECOLOR,
 944         .accel =        FB_ACCEL_NONE,
 945 };
 946
 947 static int ps3fb_set_sync(struct device *dev)
 948 {
 949         int status;
 950
 951 #ifdef HEAD_A
 952         status = lv1_gpu_context_attribute(0x0,
 953                                            L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
 954                                            0, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);
 955         if (status) {
 956                 dev_err(dev,
 957                         "%s: lv1_gpu_context_attribute DISPLAY_SYNC failed: "
 958                         "%d\n",
 959                         __func__, status);
 960                 return -1;
 961         }
 962 #endif
 963 #ifdef HEAD_B
 964         status = lv1_gpu_context_attribute(0x0,
 965                                            L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
 966                                            1, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);
 967
 968         if (status) {
 969                 dev_err(dev,
 970                         "%s: lv1_gpu_context_attribute DISPLAY_SYNC failed: "
 971                         "%d\n",
 972                         __func__, status);
 973                 return -1;
 974         }
 975 #endif
 976         return 0;
 977 }
 978
 979 static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
 980 {
 981         struct fb_info *info;
 982         int retval = -ENOMEM;
 983         u32 xres, yres;
 984         u64 ddr_lpar = 0;
 985         u64 lpar_dma_control = 0;
 986         u64 lpar_driver_info = 0;
 987         u64 lpar_reports = 0;
 988         u64 lpar_reports_size = 0;
 989         u64 xdr_lpar;
 990         int status;
 991         unsigned long offset;
 992         struct task_struct *task;
 993
 994         status = ps3_open_hv_device(dev);
 995         if (status) {
 996                 dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
 997                         __func__);
 998                 goto err;
 999         }
1000
1001         if (!ps3fb_mode)
1002                 ps3fb_mode = ps3av_get_mode();
1003         dev_dbg(&dev->core, "ps3av_mode:%d\n", ps3fb_mode);
1004
1005         if (ps3fb_mode > 0 &&
1006             !ps3av_video_mode2res(ps3fb_mode, &xres, &yres)) {
1007                 ps3fb.res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode);
1008                 dev_dbg(&dev->core, "res_index:%d\n", ps3fb.res_index);
1009         } else
1010                 ps3fb.res_index = GPU_RES_INDEX;
1011
1012         atomic_set(&ps3fb.f_count, -1); /* fbcon opens ps3fb */
1013         atomic_set(&ps3fb.ext_flip, 0); /* for flip with vsync */
1014         init_waitqueue_head(&ps3fb.wait_vsync);
1015         ps3fb.num_frames = 1;
1016
1017         ps3fb_set_sync(&dev->core);
1018
1019         /* get gpu context handle */
1020         status = lv1_gpu_memory_allocate(DDR_SIZE, 0, 0, 0, 0,
1021                                          &ps3fb.memory_handle, &ddr_lpar);
1022         if (status) {
1023                 dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
1024                         __func__, status);
1025                 goto err;
1026         }
1027         dev_dbg(&dev->core, "ddr:lpar:0x%lx\n", ddr_lpar);
1028
1029         status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
1030                                           &ps3fb.context_handle,
1031                                           &lpar_dma_control, &lpar_driver_info,
1032                                           &lpar_reports, &lpar_reports_size);
1033         if (status) {
1034                 dev_err(&dev->core,
1035                         "%s: lv1_gpu_context_attribute failed: %d\n", __func__,
1036                         status);
1037                 goto err_gpu_memory_free;
1038         }
1039
1040         /* vsync interrupt */
1041         ps3fb.dinfo = ioremap(lpar_driver_info, 128 * 1024);
1042         if (!ps3fb.dinfo) {
1043                 dev_err(&dev->core, "%s: ioremap failed\n", __func__);
1044                 goto err_gpu_context_free;
1045         }
1046
1047         retval = ps3fb_vsync_settings(ps3fb.dinfo, &dev->core);
1048         if (retval)
1049                 goto err_iounmap_dinfo;
1050
1051         /* XDR frame buffer */
1052         ps3fb.xdr_ea = ps3fb_videomemory.address;
1053         xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb.xdr_ea));
1054
1055         /* Clear memory to prevent kernel info leakage into userspace */
1056         memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size);
1057
1058         /* The GPU command buffer is at the end of video memory */
1059         ps3fb.xdr_size = ps3fb_videomemory.size - GPU_CMD_BUF_SIZE;
1060
1061         retval = ps3fb_xdr_settings(xdr_lpar, &dev->core);
1062         if (retval)
1063                 goto err_free_irq;
1064
1065         info = framebuffer_alloc(sizeof(u32) * 16, &dev->core);
1066         if (!info)
1067                 goto err_free_irq;
1068
1069         offset = VFB_OFF(ps3fb.res_index);
1070         info->screen_base = (char __iomem *)ps3fb.xdr_ea + offset;
1071         info->fbops = &ps3fb_ops;
1072
1073         info->fix = ps3fb_fix;
1074         info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea) + offset;
1075         info->fix.smem_len = ps3fb.xdr_size - offset;
1076         info->pseudo_palette = info->par;
1077         info->par = NULL;
1078         info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST;
1079
1080         retval = fb_alloc_cmap(&info->cmap, 256, 0);
1081         if (retval < 0)
1082                 goto err_framebuffer_release;
1083
1084         if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
1085                           ARRAY_SIZE(ps3fb_modedb), ps3fb_default_mode(), 32)) {
1086                 retval = -EINVAL;
1087                 goto err_fb_dealloc;
1088         }
1089
1090         fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
1091                                  &info->modelist);
1092
1093         retval = register_framebuffer(info);
1094         if (retval < 0)
1095                 goto err_fb_dealloc;
1096
1097         dev->core.driver_data = info;
1098
1099         dev_info(info->device, "%s %s, using %lu KiB of video memory\n",
1100                  dev_driver_string(info->dev), info->dev->bus_id,
1101                  ps3fb.xdr_size >> 10);
1102
1103         task = kthread_run(ps3fbd, info, DEVICE_NAME);
1104         if (IS_ERR(task)) {
1105                 retval = PTR_ERR(task);
1106                 goto err_unregister_framebuffer;
1107         }
1108
1109         ps3fb.task = task;
1110         ps3av_register_flip_ctl(ps3fb_flip_ctl, &ps3fb);
1111
1112         return 0;
1113
1114 err_unregister_framebuffer:
1115         unregister_framebuffer(info);
1116 err_fb_dealloc:
1117         fb_dealloc_cmap(&info->cmap);
1118 err_framebuffer_release:
1119         framebuffer_release(info);
1120 err_free_irq:
1121         free_irq(ps3fb.irq_no, dev);
1122         ps3_irq_plug_destroy(ps3fb.irq_no);
1123 err_iounmap_dinfo:
1124         iounmap((u8 __iomem *)ps3fb.dinfo);
1125 err_gpu_context_free:
1126         lv1_gpu_context_free(ps3fb.context_handle);
1127 err_gpu_memory_free:
1128         lv1_gpu_memory_free(ps3fb.memory_handle);
1129 err:
1130         return retval;
1131 }
1132
1133 static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
1134 {
1135         int status;
1136         struct fb_info *info = dev->core.driver_data;
1137
1138         dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);
1139
1140         ps3fb_flip_ctl(0, &ps3fb);      /* flip off */
1141         ps3fb.dinfo->irq.mask = 0;
1142
1143         if (info) {
1144                 unregister_framebuffer(info);
1145                 fb_dealloc_cmap(&info->cmap);
1146                 framebuffer_release(info);
1147         }
1148
1149         ps3av_register_flip_ctl(NULL, NULL);
1150         if (ps3fb.task) {
1151                 struct task_struct *task = ps3fb.task;
1152                 ps3fb.task = NULL;
1153                 kthread_stop(task);
1154         }
1155         if (ps3fb.irq_no) {
1156                 free_irq(ps3fb.irq_no, dev);
1157                 ps3_irq_plug_destroy(ps3fb.irq_no);
1158         }
1159         iounmap((u8 __iomem *)ps3fb.dinfo);
1160
1161         status = lv1_gpu_context_free(ps3fb.context_handle);
1162         if (status)
1163                 dev_dbg(&dev->core, "lv1_gpu_context_free failed: %d\n",
1164                         status);
1165
1166         status = lv1_gpu_memory_free(ps3fb.memory_handle);
1167         if (status)
1168                 dev_dbg(&dev->core, "lv1_gpu_memory_free failed: %d\n",
1169                         status);
1170
1171         ps3_close_hv_device(dev);
1172         dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);
1173
1174         return 0;
1175 }
1176
1177 static struct ps3_system_bus_driver ps3fb_driver = {
1178         .match_id       = PS3_MATCH_ID_GRAPHICS,
1179         .core.name      = DEVICE_NAME,
1180         .core.owner     = THIS_MODULE,
1181         .probe          = ps3fb_probe,
1182         .remove         = ps3fb_shutdown,
1183         .shutdown       = ps3fb_shutdown,
1184 };
1185
1186 static int __init ps3fb_setup(void)
1187 {
1188         char *options;
1189
1190 #ifdef MODULE
1191         return 0;
1192 #endif
1193
1194         if (fb_get_options(DEVICE_NAME, &options))
1195                 return -ENXIO;
1196
1197         if (!options || !*options)
1198                 return 0;
1199
1200         while (1) {
1201                 char *this_opt = strsep(&options, ",");
1202
1203                 if (!this_opt)
1204                         break;
1205                 if (!*this_opt)
1206                         continue;
1207                 if (!strncmp(this_opt, "mode:", 5))
1208                         ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
1209                 else
1210                         mode_option = this_opt;
1211         }
1212         return 0;
1213 }
1214
1215 static int __init ps3fb_init(void)
1216 {
1217         if (!ps3fb_videomemory.address ||  ps3fb_setup())
1218                 return -ENXIO;
1219
1220         return ps3_system_bus_driver_register(&ps3fb_driver);
1221 }
1222
1223 static void __exit ps3fb_exit(void)
1224 {
1225         pr_debug(" -> %s:%d\n", __func__, __LINE__);
1226         ps3_system_bus_driver_unregister(&ps3fb_driver);
1227         pr_debug(" <- %s:%d\n", __func__, __LINE__);
1228 }
1229
1230 module_init(ps3fb_init);
1231 module_exit(ps3fb_exit);
1232
1233 MODULE_LICENSE("GPL");
1234 MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
1235 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
1236 MODULE_ALIAS(PS3_MODULE_ALIAS_GRAPHICS);