drivers/gpu/drm/radeon/radeon_gem.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "radeon_drm.h"
  31 #include "radeon.h"
  32
  33 int radeon_gem_object_init(struct drm_gem_object *obj)
  34 {
  35         BUG();
  36
  37         return 0;
  38 }
  39
  40 void radeon_gem_object_free(struct drm_gem_object *gobj)
  41 {
  42         struct radeon_bo *robj = gem_to_radeon_bo(gobj);
  43
  44         if (robj) {
  45                 radeon_bo_unref(&robj);
  46         }
  47 }
  48
  49 int radeon_gem_object_create(struct radeon_device *rdev, int size,
  50                                 int alignment, int initial_domain,
  51                                 bool discardable, bool kernel,
  52                                 struct drm_gem_object **obj)
  53 {
  54         struct radeon_bo *robj;
  55         int r;
  56
  57         *obj = NULL;
  58         /* At least align on page size */
  59         if (alignment < PAGE_SIZE) {
  60                 alignment = PAGE_SIZE;
  61         }
  62         r = radeon_bo_create(rdev, size, alignment, kernel, initial_domain, &robj);
  63         if (r) {
  64                 if (r != -ERESTARTSYS)
  65                         DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
  66                                   size, initial_domain, alignment, r);
  67                 return r;
  68         }
  69         *obj = &robj->gem_base;
  70
  71         mutex_lock(&rdev->gem.mutex);
  72         list_add_tail(&robj->list, &rdev->gem.objects);
  73         mutex_unlock(&rdev->gem.mutex);
  74
  75         return 0;
  76 }
  77
  78 int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
  79                           uint64_t *gpu_addr)
  80 {
  81         struct radeon_bo *robj = gem_to_radeon_bo(obj);
  82         int r;
  83
  84         r = radeon_bo_reserve(robj, false);
  85         if (unlikely(r != 0))
  86                 return r;
  87         r = radeon_bo_pin(robj, pin_domain, gpu_addr);
  88         radeon_bo_unreserve(robj);
  89         return r;
  90 }
  91
  92 void radeon_gem_object_unpin(struct drm_gem_object *obj)
  93 {
  94         struct radeon_bo *robj = gem_to_radeon_bo(obj);
  95         int r;
  96
  97         r = radeon_bo_reserve(robj, false);
  98         if (likely(r == 0)) {
  99                 radeon_bo_unpin(robj);
 100                 radeon_bo_unreserve(robj);
 101         }
 102 }
 103
 104 int radeon_gem_set_domain(struct drm_gem_object *gobj,
 105                           uint32_t rdomain, uint32_t wdomain)
 106 {
 107         struct radeon_bo *robj;
 108         uint32_t domain;
 109         int r;
 110
 111         /* FIXME: reeimplement */
 112         robj = gem_to_radeon_bo(gobj);
 113         /* work out where to validate the buffer to */
 114         domain = wdomain;
 115         if (!domain) {
 116                 domain = rdomain;
 117         }
 118         if (!domain) {
 119                 /* Do nothings */
 120                 printk(KERN_WARNING "Set domain withou domain !\n");
 121                 return 0;
 122         }
 123         if (domain == RADEON_GEM_DOMAIN_CPU) {
 124                 /* Asking for cpu access wait for object idle */
 125                 r = radeon_bo_wait(robj, NULL, false, TTM_USAGE_READWRITE);
 126                 if (r) {
 127                         printk(KERN_ERR "Failed to wait for object !\n");
 128                         return r;
 129                 }
 130         }
 131         return 0;
 132 }
 133
 134 int radeon_gem_init(struct radeon_device *rdev)
 135 {
 136         INIT_LIST_HEAD(&rdev->gem.objects);
 137         return 0;
 138 }
 139
 140 void radeon_gem_fini(struct radeon_device *rdev)
 141 {
 142         radeon_bo_force_delete(rdev);
 143 }
 144
 145
 146 /*
 147  * GEM ioctls.
 148  */
 149 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 150                           struct drm_file *filp)
 151 {
 152         struct radeon_device *rdev = dev->dev_private;
 153         struct drm_radeon_gem_info *args = data;
 154         struct ttm_mem_type_manager *man;
 155
 156         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 157
 158         args->vram_size = rdev->mc.real_vram_size;
 159         args->vram_visible = (u64)man->size << PAGE_SHIFT;
 160         if (rdev->stollen_vga_memory)
 161                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 162         args->vram_visible -= radeon_fbdev_total_size(rdev);
 163         args->gart_size = rdev->mc.gtt_size - rdev->cp.ring_size - 4096 -
 164                 RADEON_IB_POOL_SIZE*64*1024;
 165         return 0;
 166 }
 167
 168 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 169                            struct drm_file *filp)
 170 {
 171         /* TODO: implement */
 172         DRM_ERROR("unimplemented %s\n", __func__);
 173         return -ENOSYS;
 174 }
 175
 176 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 177                             struct drm_file *filp)
 178 {
 179         /* TODO: implement */
 180         DRM_ERROR("unimplemented %s\n", __func__);
 181         return -ENOSYS;
 182 }
 183
 184 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 185                             struct drm_file *filp)
 186 {
 187         struct radeon_device *rdev = dev->dev_private;
 188         struct drm_radeon_gem_create *args = data;
 189         struct drm_gem_object *gobj;
 190         uint32_t handle;
 191         int r;
 192
 193         /* create a gem object to contain this object in */
 194         args->size = roundup(args->size, PAGE_SIZE);
 195         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 196                                         args->initial_domain, false,
 197                                         false, &gobj);
 198         if (r) {
 199                 return r;
 200         }
 201         r = drm_gem_handle_create(filp, gobj, &handle);
 202         /* drop reference from allocate - handle holds it now */
 203         drm_gem_object_unreference_unlocked(gobj);
 204         if (r) {
 205                 return r;
 206         }
 207         args->handle = handle;
 208         return 0;
 209 }
 210
 211 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 212                                 struct drm_file *filp)
 213 {
 214         /* transition the BO to a domain -
 215          * just validate the BO into a certain domain */
 216         struct drm_radeon_gem_set_domain *args = data;
 217         struct drm_gem_object *gobj;
 218         struct radeon_bo *robj;
 219         int r;
 220
 221         /* for now if someone requests domain CPU -
 222          * just make sure the buffer is finished with */
 223
 224         /* just do a BO wait for now */
 225         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 226         if (gobj == NULL) {
 227                 return -ENOENT;
 228         }
 229         robj = gem_to_radeon_bo(gobj);
 230
 231         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 232
 233         drm_gem_object_unreference_unlocked(gobj);
 234         return r;
 235 }
 236
 237 int radeon_mode_dumb_mmap(struct drm_file *filp,
 238                           struct drm_device *dev,
 239                           uint32_t handle, uint64_t *offset_p)
 240 {
 241         struct drm_gem_object *gobj;
 242         struct radeon_bo *robj;
 243
 244         gobj = drm_gem_object_lookup(dev, filp, handle);
 245         if (gobj == NULL) {
 246                 return -ENOENT;
 247         }
 248         robj = gem_to_radeon_bo(gobj);
 249         *offset_p = radeon_bo_mmap_offset(robj);
 250         drm_gem_object_unreference_unlocked(gobj);
 251         return 0;
 252 }
 253
 254 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 255                           struct drm_file *filp)
 256 {
 257         struct drm_radeon_gem_mmap *args = data;
 258
 259         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 260 }
 261
 262 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 263                           struct drm_file *filp)
 264 {
 265         struct drm_radeon_gem_busy *args = data;
 266         struct drm_gem_object *gobj;
 267         struct radeon_bo *robj;
 268         int r;
 269         uint32_t cur_placement = 0;
 270
 271         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 272         if (gobj == NULL) {
 273                 return -ENOENT;
 274         }
 275         robj = gem_to_radeon_bo(gobj);
 276         r = radeon_bo_wait(robj, &cur_placement, true, TTM_USAGE_READWRITE);
 277         switch (cur_placement) {
 278         case TTM_PL_VRAM:
 279                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 280                 break;
 281         case TTM_PL_TT:
 282                 args->domain = RADEON_GEM_DOMAIN_GTT;
 283                 break;
 284         case TTM_PL_SYSTEM:
 285                 args->domain = RADEON_GEM_DOMAIN_CPU;
 286         default:
 287                 break;
 288         }
 289         drm_gem_object_unreference_unlocked(gobj);
 290         return r;
 291 }
 292
 293 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 294                               struct drm_file *filp)
 295 {
 296         struct drm_radeon_gem_wait_idle *args = data;
 297         struct drm_gem_object *gobj;
 298         struct radeon_bo *robj;
 299         int r;
 300
 301         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 302         if (gobj == NULL) {
 303                 return -ENOENT;
 304         }
 305         robj = gem_to_radeon_bo(gobj);
 306         r = radeon_bo_wait(robj, NULL, false, TTM_USAGE_READWRITE);
 307         /* callback hw specific functions if any */
 308         if (robj->rdev->asic->ioctl_wait_idle)
 309                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 310         drm_gem_object_unreference_unlocked(gobj);
 311         return r;
 312 }
 313
 314 int radeon_gem_wait_ioctl(struct drm_device *dev, void *data,
 315                           struct drm_file *filp)
 316 {
 317         struct drm_radeon_gem_wait *args = data;
 318         struct drm_gem_object *gobj;
 319         struct radeon_bo *robj;
 320         bool no_wait = (args->flags & RADEON_GEM_NO_WAIT) != 0;
 321         enum ttm_buffer_usage usage = 0;
 322         int r;
 323
 324         if (args->flags & RADEON_GEM_USAGE_READ)
 325                 usage |= TTM_USAGE_READ;
 326         if (args->flags & RADEON_GEM_USAGE_WRITE)
 327                 usage |= TTM_USAGE_WRITE;
 328         if (!usage)
 329                 usage = TTM_USAGE_READWRITE;
 330
 331         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 332         if (gobj == NULL) {
 333                 return -ENOENT;
 334         }
 335         robj = gem_to_radeon_bo(gobj);
 336         r = radeon_bo_wait(robj, NULL, no_wait, usage);
 337         /* callback hw specific functions if any */
 338         if (!no_wait && robj->rdev->asic->ioctl_wait_idle)
 339                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 340         drm_gem_object_unreference_unlocked(gobj);
 341         return r;
 342 }
 343
 344 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 345                                 struct drm_file *filp)
 346 {
 347         struct drm_radeon_gem_set_tiling *args = data;
 348         struct drm_gem_object *gobj;
 349         struct radeon_bo *robj;
 350         int r = 0;
 351
 352         DRM_DEBUG("%d \n", args->handle);
 353         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 354         if (gobj == NULL)
 355                 return -ENOENT;
 356         robj = gem_to_radeon_bo(gobj);
 357         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 358         drm_gem_object_unreference_unlocked(gobj);
 359         return r;
 360 }
 361
 362 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 363                                 struct drm_file *filp)
 364 {
 365         struct drm_radeon_gem_get_tiling *args = data;
 366         struct drm_gem_object *gobj;
 367         struct radeon_bo *rbo;
 368         int r = 0;
 369
 370         DRM_DEBUG("\n");
 371         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 372         if (gobj == NULL)
 373                 return -ENOENT;
 374         rbo = gem_to_radeon_bo(gobj);
 375         r = radeon_bo_reserve(rbo, false);
 376         if (unlikely(r != 0))
 377                 goto out;
 378         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 379         radeon_bo_unreserve(rbo);
 380 out:
 381         drm_gem_object_unreference_unlocked(gobj);
 382         return r;
 383 }
 384
 385 int radeon_mode_dumb_create(struct drm_file *file_priv,
 386                             struct drm_device *dev,
 387                             struct drm_mode_create_dumb *args)
 388 {
 389         struct radeon_device *rdev = dev->dev_private;
 390         struct drm_gem_object *gobj;
 391         uint32_t handle;
 392         int r;
 393
 394         args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
 395         args->size = args->pitch * args->height;
 396         args->size = ALIGN(args->size, PAGE_SIZE);
 397
 398         r = radeon_gem_object_create(rdev, args->size, 0,
 399                                      RADEON_GEM_DOMAIN_VRAM,
 400                                      false, ttm_bo_type_device,
 401                                      &gobj);
 402         if (r)
 403                 return -ENOMEM;
 404
 405         r = drm_gem_handle_create(file_priv, gobj, &handle);
 406         /* drop reference from allocate - handle holds it now */
 407         drm_gem_object_unreference_unlocked(gobj);
 408         if (r) {
 409                 return r;
 410         }
 411         args->handle = handle;
 412         return 0;
 413 }
 414
 415 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 416                              struct drm_device *dev,
 417                              uint32_t handle)
 418 {
 419         return drm_gem_handle_delete(file_priv, handle);
 420 }