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         /* we do nothings here */
  36         return 0;
  37 }
  38
  39 void radeon_gem_object_free(struct drm_gem_object *gobj)
  40 {
  41         struct radeon_bo *robj = gobj->driver_private;
  42
  43         gobj->driver_private = NULL;
  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 drm_gem_object *gobj;
  55         struct radeon_bo *robj;
  56         int r;
  57
  58         *obj = NULL;
  59         gobj = drm_gem_object_alloc(rdev->ddev, size);
  60         if (!gobj) {
  61                 return -ENOMEM;
  62         }
  63         /* At least align on page size */
  64         if (alignment < PAGE_SIZE) {
  65                 alignment = PAGE_SIZE;
  66         }
  67         r = radeon_bo_create(rdev, gobj, size, kernel, initial_domain, &robj);
  68         if (r) {
  69                 if (r != -ERESTARTSYS)
  70                         DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
  71                                   size, initial_domain, alignment, r);
  72                 drm_gem_object_unreference_unlocked(gobj);
  73                 return r;
  74         }
  75         gobj->driver_private = robj;
  76         *obj = gobj;
  77         return 0;
  78 }
  79
  80 int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
  81                           uint64_t *gpu_addr)
  82 {
  83         struct radeon_bo *robj = obj->driver_private;
  84         int r;
  85
  86         r = radeon_bo_reserve(robj, false);
  87         if (unlikely(r != 0))
  88                 return r;
  89         r = radeon_bo_pin(robj, pin_domain, gpu_addr);
  90         radeon_bo_unreserve(robj);
  91         return r;
  92 }
  93
  94 void radeon_gem_object_unpin(struct drm_gem_object *obj)
  95 {
  96         struct radeon_bo *robj = obj->driver_private;
  97         int r;
  98
  99         r = radeon_bo_reserve(robj, false);
 100         if (likely(r == 0)) {
 101                 radeon_bo_unpin(robj);
 102                 radeon_bo_unreserve(robj);
 103         }
 104 }
 105
 106 int radeon_gem_set_domain(struct drm_gem_object *gobj,
 107                           uint32_t rdomain, uint32_t wdomain)
 108 {
 109         struct radeon_bo *robj;
 110         uint32_t domain;
 111         int r;
 112
 113         /* FIXME: reeimplement */
 114         robj = gobj->driver_private;
 115         /* work out where to validate the buffer to */
 116         domain = wdomain;
 117         if (!domain) {
 118                 domain = rdomain;
 119         }
 120         if (!domain) {
 121                 /* Do nothings */
 122                 printk(KERN_WARNING "Set domain withou domain !\n");
 123                 return 0;
 124         }
 125         if (domain == RADEON_GEM_DOMAIN_CPU) {
 126                 /* Asking for cpu access wait for object idle */
 127                 r = radeon_bo_wait(robj, NULL, false);
 128                 if (r) {
 129                         printk(KERN_ERR "Failed to wait for object !\n");
 130                         return r;
 131                 }
 132         }
 133         return 0;
 134 }
 135
 136 int radeon_gem_init(struct radeon_device *rdev)
 137 {
 138         INIT_LIST_HEAD(&rdev->gem.objects);
 139         return 0;
 140 }
 141
 142 void radeon_gem_fini(struct radeon_device *rdev)
 143 {
 144         radeon_bo_force_delete(rdev);
 145 }
 146
 147
 148 /*
 149  * GEM ioctls.
 150  */
 151 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 152                           struct drm_file *filp)
 153 {
 154         struct radeon_device *rdev = dev->dev_private;
 155         struct drm_radeon_gem_info *args = data;
 156
 157         args->vram_size = rdev->mc.real_vram_size;
 158         args->vram_visible = rdev->mc.real_vram_size;
 159         if (rdev->stollen_vga_memory)
 160                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 161         if (rdev->fbdev_rbo)
 162                 args->vram_visible -= radeon_bo_size(rdev->fbdev_rbo);
 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         if (r) {
 203                 drm_gem_object_unreference_unlocked(gobj);
 204                 return r;
 205         }
 206         drm_gem_object_handle_unreference_unlocked(gobj);
 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 -EINVAL;
 228         }
 229         robj = gobj->driver_private;
 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_gem_mmap_ioctl(struct drm_device *dev, void *data,
 238                           struct drm_file *filp)
 239 {
 240         struct drm_radeon_gem_mmap *args = data;
 241         struct drm_gem_object *gobj;
 242         struct radeon_bo *robj;
 243
 244         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 245         if (gobj == NULL) {
 246                 return -EINVAL;
 247         }
 248         robj = gobj->driver_private;
 249         args->addr_ptr = radeon_bo_mmap_offset(robj);
 250         drm_gem_object_unreference_unlocked(gobj);
 251         return 0;
 252 }
 253
 254 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 255                           struct drm_file *filp)
 256 {
 257         struct drm_radeon_gem_busy *args = data;
 258         struct drm_gem_object *gobj;
 259         struct radeon_bo *robj;
 260         int r;
 261         uint32_t cur_placement = 0;
 262
 263         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 264         if (gobj == NULL) {
 265                 return -EINVAL;
 266         }
 267         robj = gobj->driver_private;
 268         r = radeon_bo_wait(robj, &cur_placement, true);
 269         switch (cur_placement) {
 270         case TTM_PL_VRAM:
 271                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 272                 break;
 273         case TTM_PL_TT:
 274                 args->domain = RADEON_GEM_DOMAIN_GTT;
 275                 break;
 276         case TTM_PL_SYSTEM:
 277                 args->domain = RADEON_GEM_DOMAIN_CPU;
 278         default:
 279                 break;
 280         }
 281         drm_gem_object_unreference_unlocked(gobj);
 282         return r;
 283 }
 284
 285 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 286                               struct drm_file *filp)
 287 {
 288         struct drm_radeon_gem_wait_idle *args = data;
 289         struct drm_gem_object *gobj;
 290         struct radeon_bo *robj;
 291         int r;
 292
 293         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 294         if (gobj == NULL) {
 295                 return -EINVAL;
 296         }
 297         robj = gobj->driver_private;
 298         r = radeon_bo_wait(robj, NULL, false);
 299         /* callback hw specific functions if any */
 300         if (robj->rdev->asic->ioctl_wait_idle)
 301                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 302         drm_gem_object_unreference_unlocked(gobj);
 303         return r;
 304 }
 305
 306 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 307                                 struct drm_file *filp)
 308 {
 309         struct drm_radeon_gem_set_tiling *args = data;
 310         struct drm_gem_object *gobj;
 311         struct radeon_bo *robj;
 312         int r = 0;
 313
 314         DRM_DEBUG("%d \n", args->handle);
 315         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 316         if (gobj == NULL)
 317                 return -EINVAL;
 318         robj = gobj->driver_private;
 319         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 320         drm_gem_object_unreference_unlocked(gobj);
 321         return r;
 322 }
 323
 324 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 325                                 struct drm_file *filp)
 326 {
 327         struct drm_radeon_gem_get_tiling *args = data;
 328         struct drm_gem_object *gobj;
 329         struct radeon_bo *rbo;
 330         int r = 0;
 331
 332         DRM_DEBUG("\n");
 333         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 334         if (gobj == NULL)
 335                 return -EINVAL;
 336         rbo = gobj->driver_private;
 337         r = radeon_bo_reserve(rbo, false);
 338         if (unlikely(r != 0))
 339                 goto out;
 340         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 341         radeon_bo_unreserve(rbo);
 342 out:
 343         drm_gem_object_unreference_unlocked(gobj);
 344         return r;
 345 }