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);
 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         unsigned i;
 156
 157         man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 158
 159         args->vram_size = rdev->mc.real_vram_size;
 160         args->vram_visible = (u64)man->size << PAGE_SHIFT;
 161         if (rdev->stollen_vga_memory)
 162                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 163         args->vram_visible -= radeon_fbdev_total_size(rdev);
 164         args->gart_size = rdev->mc.gtt_size - 4096 - RADEON_IB_POOL_SIZE*64*1024;
 165         for(i = 0; i < RADEON_NUM_RINGS; ++i)
 166                 args->gart_size -= rdev->cp[i].ring_size;
 167         return 0;
 168 }
 169
 170 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 171                            struct drm_file *filp)
 172 {
 173         /* TODO: implement */
 174         DRM_ERROR("unimplemented %s\n", __func__);
 175         return -ENOSYS;
 176 }
 177
 178 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 179                             struct drm_file *filp)
 180 {
 181         /* TODO: implement */
 182         DRM_ERROR("unimplemented %s\n", __func__);
 183         return -ENOSYS;
 184 }
 185
 186 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 187                             struct drm_file *filp)
 188 {
 189         struct radeon_device *rdev = dev->dev_private;
 190         struct drm_radeon_gem_create *args = data;
 191         struct drm_gem_object *gobj;
 192         uint32_t handle;
 193         int r;
 194
 195         /* create a gem object to contain this object in */
 196         args->size = roundup(args->size, PAGE_SIZE);
 197         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 198                                         args->initial_domain, false,
 199                                         false, &gobj);
 200         if (r) {
 201                 return r;
 202         }
 203         r = drm_gem_handle_create(filp, gobj, &handle);
 204         /* drop reference from allocate - handle holds it now */
 205         drm_gem_object_unreference_unlocked(gobj);
 206         if (r) {
 207                 return r;
 208         }
 209         args->handle = handle;
 210         return 0;
 211 }
 212
 213 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 214                                 struct drm_file *filp)
 215 {
 216         /* transition the BO to a domain -
 217          * just validate the BO into a certain domain */
 218         struct drm_radeon_gem_set_domain *args = data;
 219         struct drm_gem_object *gobj;
 220         struct radeon_bo *robj;
 221         int r;
 222
 223         /* for now if someone requests domain CPU -
 224          * just make sure the buffer is finished with */
 225
 226         /* just do a BO wait for now */
 227         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 228         if (gobj == NULL) {
 229                 return -ENOENT;
 230         }
 231         robj = gem_to_radeon_bo(gobj);
 232
 233         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 234
 235         drm_gem_object_unreference_unlocked(gobj);
 236         return r;
 237 }
 238
 239 int radeon_mode_dumb_mmap(struct drm_file *filp,
 240                           struct drm_device *dev,
 241                           uint32_t handle, uint64_t *offset_p)
 242 {
 243         struct drm_gem_object *gobj;
 244         struct radeon_bo *robj;
 245
 246         gobj = drm_gem_object_lookup(dev, filp, handle);
 247         if (gobj == NULL) {
 248                 return -ENOENT;
 249         }
 250         robj = gem_to_radeon_bo(gobj);
 251         *offset_p = radeon_bo_mmap_offset(robj);
 252         drm_gem_object_unreference_unlocked(gobj);
 253         return 0;
 254 }
 255
 256 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 257                           struct drm_file *filp)
 258 {
 259         struct drm_radeon_gem_mmap *args = data;
 260
 261         return radeon_mode_dumb_mmap(filp, dev, args->handle, &args->addr_ptr);
 262 }
 263
 264 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 265                           struct drm_file *filp)
 266 {
 267         struct drm_radeon_gem_busy *args = data;
 268         struct drm_gem_object *gobj;
 269         struct radeon_bo *robj;
 270         int r;
 271         uint32_t cur_placement = 0;
 272
 273         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 274         if (gobj == NULL) {
 275                 return -ENOENT;
 276         }
 277         robj = gem_to_radeon_bo(gobj);
 278         r = radeon_bo_wait(robj, &cur_placement, true);
 279         switch (cur_placement) {
 280         case TTM_PL_VRAM:
 281                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 282                 break;
 283         case TTM_PL_TT:
 284                 args->domain = RADEON_GEM_DOMAIN_GTT;
 285                 break;
 286         case TTM_PL_SYSTEM:
 287                 args->domain = RADEON_GEM_DOMAIN_CPU;
 288         default:
 289                 break;
 290         }
 291         drm_gem_object_unreference_unlocked(gobj);
 292         return r;
 293 }
 294
 295 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 296                               struct drm_file *filp)
 297 {
 298         struct drm_radeon_gem_wait_idle *args = data;
 299         struct drm_gem_object *gobj;
 300         struct radeon_bo *robj;
 301         int r;
 302
 303         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 304         if (gobj == NULL) {
 305                 return -ENOENT;
 306         }
 307         robj = gem_to_radeon_bo(gobj);
 308         r = radeon_bo_wait(robj, NULL, false);
 309         /* callback hw specific functions if any */
 310         if (robj->rdev->asic->ioctl_wait_idle)
 311                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 312         drm_gem_object_unreference_unlocked(gobj);
 313         return r;
 314 }
 315
 316 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 317                                 struct drm_file *filp)
 318 {
 319         struct drm_radeon_gem_set_tiling *args = data;
 320         struct drm_gem_object *gobj;
 321         struct radeon_bo *robj;
 322         int r = 0;
 323
 324         DRM_DEBUG("%d \n", args->handle);
 325         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 326         if (gobj == NULL)
 327                 return -ENOENT;
 328         robj = gem_to_radeon_bo(gobj);
 329         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 330         drm_gem_object_unreference_unlocked(gobj);
 331         return r;
 332 }
 333
 334 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 335                                 struct drm_file *filp)
 336 {
 337         struct drm_radeon_gem_get_tiling *args = data;
 338         struct drm_gem_object *gobj;
 339         struct radeon_bo *rbo;
 340         int r = 0;
 341
 342         DRM_DEBUG("\n");
 343         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 344         if (gobj == NULL)
 345                 return -ENOENT;
 346         rbo = gem_to_radeon_bo(gobj);
 347         r = radeon_bo_reserve(rbo, false);
 348         if (unlikely(r != 0))
 349                 goto out;
 350         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 351         radeon_bo_unreserve(rbo);
 352 out:
 353         drm_gem_object_unreference_unlocked(gobj);
 354         return r;
 355 }
 356
 357 int radeon_mode_dumb_create(struct drm_file *file_priv,
 358                             struct drm_device *dev,
 359                             struct drm_mode_create_dumb *args)
 360 {
 361         struct radeon_device *rdev = dev->dev_private;
 362         struct drm_gem_object *gobj;
 363         uint32_t handle;
 364         int r;
 365
 366         args->pitch = radeon_align_pitch(rdev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
 367         args->size = args->pitch * args->height;
 368         args->size = ALIGN(args->size, PAGE_SIZE);
 369
 370         r = radeon_gem_object_create(rdev, args->size, 0,
 371                                      RADEON_GEM_DOMAIN_VRAM,
 372                                      false, ttm_bo_type_device,
 373                                      &gobj);
 374         if (r)
 375                 return -ENOMEM;
 376
 377         r = drm_gem_handle_create(file_priv, gobj, &handle);
 378         /* drop reference from allocate - handle holds it now */
 379         drm_gem_object_unreference_unlocked(gobj);
 380         if (r) {
 381                 return r;
 382         }
 383         args->handle = handle;
 384         return 0;
 385 }
 386
 387 int radeon_mode_dumb_destroy(struct drm_file *file_priv,
 388                              struct drm_device *dev,
 389                              uint32_t handle)
 390 {
 391         return drm_gem_handle_delete(file_priv, handle);
 392 }