SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/gpu/drm/radeon/radeon_fb.c

   1 /*
   2  * Copyright © 2007 David Airlie
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *     David Airlie
  25  */
  26 #include <linux/module.h>
  27 #include <linux/fb.h>
  28
  29 #include "drmP.h"
  30 #include "drm.h"
  31 #include "drm_crtc.h"
  32 #include "drm_crtc_helper.h"
  33 #include "radeon_drm.h"
  34 #include "radeon.h"
  35
  36 #include "drm_fb_helper.h"
  37
  38 #include <linux/vga_switcheroo.h>
  39
  40 /* object hierarchy -
  41    this contains a helper + a radeon fb
  42    the helper contains a pointer to radeon framebuffer baseclass.
  43 */
  44 struct radeon_fbdev {
  45         struct drm_fb_helper helper;
  46         struct radeon_framebuffer rfb;
  47         struct list_head fbdev_list;
  48         struct radeon_device *rdev;
  49 };
  50
  51 static struct fb_ops radeonfb_ops = {
  52         .owner = THIS_MODULE,
  53         .fb_check_var = drm_fb_helper_check_var,
  54         .fb_set_par = drm_fb_helper_set_par,
  55         .fb_setcolreg = drm_fb_helper_setcolreg,
  56         .fb_fillrect = cfb_fillrect,
  57         .fb_copyarea = cfb_copyarea,
  58         .fb_imageblit = cfb_imageblit,
  59         .fb_pan_display = drm_fb_helper_pan_display,
  60         .fb_blank = drm_fb_helper_blank,
  61         .fb_setcmap = drm_fb_helper_setcmap,
  62 };
  63
  64
  65 static int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
  66 {
  67         int aligned = width;
  68         int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
  69         int pitch_mask = 0;
  70
  71         switch (bpp / 8) {
  72         case 1:
  73                 pitch_mask = align_large ? 255 : 127;
  74                 break;
  75         case 2:
  76                 pitch_mask = align_large ? 127 : 31;
  77                 break;
  78         case 3:
  79         case 4:
  80                 pitch_mask = align_large ? 63 : 15;
  81                 break;
  82         }
  83
  84         aligned += pitch_mask;
  85         aligned &= ~pitch_mask;
  86         return aligned;
  87 }
  88
  89 static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
  90         .gamma_set = radeon_crtc_fb_gamma_set,
  91         .gamma_get = radeon_crtc_fb_gamma_get,
  92 };
  93
  94 static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj)
  95 {
  96         struct radeon_bo *rbo = gobj->driver_private;
  97         int ret;
  98
  99         ret = radeon_bo_reserve(rbo, false);
 100         if (likely(ret == 0)) {
 101                 radeon_bo_kunmap(rbo);
 102                 radeon_bo_unreserve(rbo);
 103         }
 104         drm_gem_object_unreference_unlocked(gobj);
 105 }
 106
 107 static int radeonfb_create_pinned_object(struct radeon_fbdev *rfbdev,
 108                                          struct drm_mode_fb_cmd *mode_cmd,
 109                                          struct drm_gem_object **gobj_p)
 110 {
 111         struct radeon_device *rdev = rfbdev->rdev;
 112         struct drm_gem_object *gobj = NULL;
 113         struct radeon_bo *rbo = NULL;
 114         bool fb_tiled = false; /* useful for testing */
 115         u32 tiling_flags = 0;
 116         int ret;
 117         int aligned_size, size;
 118
 119         /* need to align pitch with crtc limits */
 120         mode_cmd->pitch = radeon_align_pitch(rdev, mode_cmd->width, mode_cmd->bpp, fb_tiled) * ((mode_cmd->bpp + 1) / 8);
 121
 122         size = mode_cmd->pitch * mode_cmd->height;
 123         aligned_size = ALIGN(size, PAGE_SIZE);
 124         ret = radeon_gem_object_create(rdev, aligned_size, 0,
 125                                        RADEON_GEM_DOMAIN_VRAM,
 126                                        false, ttm_bo_type_kernel,
 127                                        &gobj);
 128         if (ret) {
 129                 printk(KERN_ERR "failed to allocate framebuffer (%d)\n",
 130                        aligned_size);
 131                 return -ENOMEM;
 132         }
 133         rbo = gobj->driver_private;
 134
 135         if (fb_tiled)
 136                 tiling_flags = RADEON_TILING_MACRO;
 137
 138 #ifdef __BIG_ENDIAN
 139         switch (mode_cmd->bpp) {
 140         case 32:
 141                 tiling_flags |= RADEON_TILING_SWAP_32BIT;
 142                 break;
 143         case 16:
 144                 tiling_flags |= RADEON_TILING_SWAP_16BIT;
 145         default:
 146                 break;
 147         }
 148 #endif
 149
 150         if (tiling_flags) {
 151                 ret = radeon_bo_set_tiling_flags(rbo,
 152                                                  tiling_flags | RADEON_TILING_SURFACE,
 153                                                  mode_cmd->pitch);
 154                 if (ret)
 155                         dev_err(rdev->dev, "FB failed to set tiling flags\n");
 156         }
 157
 158
 159         ret = radeon_bo_reserve(rbo, false);
 160         if (unlikely(ret != 0))
 161                 goto out_unref;
 162         ret = radeon_bo_pin(rbo, RADEON_GEM_DOMAIN_VRAM, NULL);
 163         if (ret) {
 164                 radeon_bo_unreserve(rbo);
 165                 goto out_unref;
 166         }
 167         if (fb_tiled)
 168                 radeon_bo_check_tiling(rbo, 0, 0);
 169         ret = radeon_bo_kmap(rbo, NULL);
 170         radeon_bo_unreserve(rbo);
 171         if (ret) {
 172                 goto out_unref;
 173         }
 174
 175         *gobj_p = gobj;
 176         return 0;
 177 out_unref:
 178         radeonfb_destroy_pinned_object(gobj);
 179         *gobj_p = NULL;
 180         return ret;
 181 }
 182
 183 static int radeonfb_create(struct radeon_fbdev *rfbdev,
 184                            struct drm_fb_helper_surface_size *sizes)
 185 {
 186         struct radeon_device *rdev = rfbdev->rdev;
 187         struct fb_info *info;
 188         struct drm_framebuffer *fb = NULL;
 189         struct drm_mode_fb_cmd mode_cmd;
 190         struct drm_gem_object *gobj = NULL;
 191         struct radeon_bo *rbo = NULL;
 192         struct device *device = &rdev->pdev->dev;
 193         int ret;
 194         unsigned long tmp;
 195
 196         mode_cmd.width = sizes->surface_width;
 197         mode_cmd.height = sizes->surface_height;
 198
 199         /* avivo can't scanout real 24bpp */
 200         if ((sizes->surface_bpp == 24) && ASIC_IS_AVIVO(rdev))
 201                 sizes->surface_bpp = 32;
 202
 203         mode_cmd.bpp = sizes->surface_bpp;
 204         mode_cmd.depth = sizes->surface_depth;
 205
 206         ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
 207         rbo = gobj->driver_private;
 208
 209         /* okay we have an object now allocate the framebuffer */
 210         info = framebuffer_alloc(0, device);
 211         if (info == NULL) {
 212                 ret = -ENOMEM;
 213                 goto out_unref;
 214         }
 215
 216         info->par = rfbdev;
 217
 218         radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
 219
 220         fb = &rfbdev->rfb.base;
 221
 222         /* setup helper */
 223         rfbdev->helper.fb = fb;
 224         rfbdev->helper.fbdev = info;
 225         rfbdev->helper.funcs = &radeon_fb_helper_funcs;
 226
 227         memset_io(rbo->kptr, 0x0, radeon_bo_size(rbo));
 228
 229         strcpy(info->fix.id, "radeondrmfb");
 230
 231         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 232
 233         info->flags = FBINFO_DEFAULT;
 234         info->fbops = &radeonfb_ops;
 235
 236         tmp = radeon_bo_gpu_offset(rbo) - rdev->mc.vram_start;
 237         info->fix.smem_start = rdev->mc.aper_base + tmp;
 238         info->fix.smem_len = radeon_bo_size(rbo);
 239         info->screen_base = rbo->kptr;
 240         info->screen_size = radeon_bo_size(rbo);
 241
 242         drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
 243
 244         /* setup aperture base/size for vesafb takeover */
 245         info->aperture_base = rdev->ddev->mode_config.fb_base;
 246         info->aperture_size = rdev->mc.real_vram_size;
 247
 248         info->fix.mmio_start = 0;
 249         info->fix.mmio_len = 0;
 250         info->pixmap.size = 64*1024;
 251         info->pixmap.buf_align = 8;
 252         info->pixmap.access_align = 32;
 253         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 254         info->pixmap.scan_align = 1;
 255         if (info->screen_base == NULL) {
 256                 ret = -ENOSPC;
 257                 goto out_unref;
 258         }
 259         DRM_INFO("fb mappable at 0x%lX\n",  info->fix.smem_start);
 260         DRM_INFO("vram apper at 0x%lX\n",  (unsigned long)rdev->mc.aper_base);
 261         DRM_INFO("size %lu\n", (unsigned long)radeon_bo_size(rbo));
 262         DRM_INFO("fb depth is %d\n", fb->depth);
 263         DRM_INFO("   pitch is %d\n", fb->pitch);
 264
 265         vga_switcheroo_client_fb_set(rdev->ddev->pdev, info);
 266         return 0;
 267
 268 out_unref:
 269         if (rbo) {
 270
 271         }
 272         if (fb && ret) {
 273                 drm_gem_object_unreference(gobj);
 274                 drm_framebuffer_cleanup(fb);
 275                 kfree(fb);
 276         }
 277         return ret;
 278 }
 279
 280 static int radeon_fb_find_or_create_single(struct drm_fb_helper *helper,
 281                                            struct drm_fb_helper_surface_size *sizes)
 282 {
 283         struct radeon_fbdev *rfbdev = (struct radeon_fbdev *)helper;
 284         int new_fb = 0;
 285         int ret;
 286
 287         if (!helper->fb) {
 288                 ret = radeonfb_create(rfbdev, sizes);
 289                 if (ret)
 290                         return ret;
 291                 new_fb = 1;
 292         }
 293         return new_fb;
 294 }
 295
 296 static char *mode_option;
 297 int radeon_parse_options(char *options)
 298 {
 299         char *this_opt;
 300
 301         if (!options || !*options)
 302                 return 0;
 303
 304         while ((this_opt = strsep(&options, ",")) != NULL) {
 305                 if (!*this_opt)
 306                         continue;
 307                 mode_option = this_opt;
 308         }
 309         return 0;
 310 }
 311
 312 static int radeonfb_probe(struct radeon_fbdev *rfbdev)
 313 {
 314         struct radeon_device *rdev = rfbdev->rdev;
 315         int bpp_sel = 32;
 316
 317         /* select 8 bpp console on RN50 or 16MB cards */
 318         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
 319                 bpp_sel = 8;
 320
 321         return drm_fb_helper_single_fb_probe(&rfbdev->helper, bpp_sel);
 322 }
 323
 324 void radeonfb_hotplug(struct drm_device *dev, bool polled)
 325 {
 326         struct radeon_device *rdev = dev->dev_private;
 327         int max_width, max_height;
 328
 329         max_width = rdev->mode_info.rfbdev->rfb.base.width;
 330         max_height = rdev->mode_info.rfbdev->rfb.base.height;
 331         drm_helper_fb_hotplug_event(&rdev->mode_info.rfbdev->helper, max_width, max_height, polled);
 332
 333         radeonfb_probe(rdev->mode_info.rfbdev);
 334 }
 335
 336 static void radeon_fb_poll_changed(struct drm_fb_helper *fb_helper)
 337 {
 338         radeonfb_hotplug(fb_helper->dev, true);
 339 }
 340
 341 static int radeon_fbdev_destroy(struct drm_device *dev, struct radeon_fbdev *rfbdev)
 342 {
 343         struct fb_info *info;
 344         struct radeon_framebuffer *rfb = &rfbdev->rfb;
 345         struct radeon_bo *rbo;
 346         int r;
 347
 348         if (rfbdev->helper.fbdev) {
 349                 info = rfbdev->helper.fbdev;
 350                 unregister_framebuffer(info);
 351                 framebuffer_release(info);
 352         }
 353
 354         if (rfb->obj) {
 355                 rbo = rfb->obj->driver_private;
 356                 r = radeon_bo_reserve(rbo, false);
 357                 if (likely(r == 0)) {
 358                         radeon_bo_kunmap(rbo);
 359                         radeon_bo_unpin(rbo);
 360                         radeon_bo_unreserve(rbo);
 361                 }
 362                 drm_gem_object_unreference_unlocked(rfb->obj);
 363         }
 364         drm_fb_helper_free(&rfbdev->helper);
 365         drm_framebuffer_cleanup(&rfb->base);
 366
 367         return 0;
 368 }
 369 MODULE_LICENSE("GPL");
 370
 371 int radeon_fbdev_init(struct radeon_device *rdev)
 372 {
 373         struct radeon_fbdev *rfbdev;
 374
 375         rfbdev = kzalloc(sizeof(struct radeon_fbdev), GFP_KERNEL);
 376         if (!rfbdev)
 377                 return -ENOMEM;
 378
 379         rfbdev->rdev = rdev;
 380         rdev->mode_info.rfbdev = rfbdev;
 381
 382         drm_fb_helper_init_crtc_count(rdev->ddev, &rfbdev->helper,
 383                                       rdev->num_crtc,
 384                                       RADEONFB_CONN_LIMIT);
 385         rfbdev->helper.fb_probe = radeon_fb_find_or_create_single;
 386
 387         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
 388
 389         rfbdev->helper.fb_poll_changed = radeon_fb_poll_changed;
 390         drm_fb_helper_poll_init(&rfbdev->helper);
 391
 392         drm_fb_helper_initial_config(&rfbdev->helper);
 393         radeonfb_probe(rfbdev);
 394
 395         return 0;
 396
 397 }
 398
 399 void radeon_fbdev_fini(struct radeon_device *rdev)
 400 {
 401         if (!rdev->mode_info.rfbdev)
 402                 return;
 403
 404         drm_fb_helper_poll_fini(&rdev->mode_info.rfbdev->helper);
 405         radeon_fbdev_destroy(rdev->ddev, rdev->mode_info.rfbdev);
 406         kfree(rdev->mode_info.rfbdev);
 407         rdev->mode_info.rfbdev = NULL;
 408 }
 409
 410 void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
 411 {
 412         fb_set_suspend(rdev->mode_info.rfbdev->helper.fbdev, state);
 413 }
 414
 415 int radeon_fbdev_total_size(struct radeon_device *rdev)
 416 {
 417         struct radeon_bo *robj;
 418         int size = 0;
 419
 420         robj = rdev->mode_info.rfbdev->rfb.obj->driver_private;
 421         size += radeon_bo_size(robj);
 422         return size;
 423 }
 424
 425 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 426 {
 427         if (robj == rdev->mode_info.rfbdev->rfb.obj->driver_private)
 428                 return true;
 429         return false;
 430 }
 431