release/src-rt-6.x.4708/linux/linux-2.6.36/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         drm_gem_object_release(gobj);
  49         kfree(gobj);
  50 }
  51
  52 int radeon_gem_object_create(struct radeon_device *rdev, int size,
  53                                 int alignment, int initial_domain,
  54                                 bool discardable, bool kernel,
  55                                 struct drm_gem_object **obj)
  56 {
  57         struct drm_gem_object *gobj;
  58         struct radeon_bo *robj;
  59         int r;
  60
  61         *obj = NULL;
  62         gobj = drm_gem_object_alloc(rdev->ddev, size);
  63         if (!gobj) {
  64                 return -ENOMEM;
  65         }
  66         /* At least align on page size */
  67         if (alignment < PAGE_SIZE) {
  68                 alignment = PAGE_SIZE;
  69         }
  70         r = radeon_bo_create(rdev, gobj, size, kernel, initial_domain, &robj);
  71         if (r) {
  72                 if (r != -ERESTARTSYS)
  73                         DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n",
  74                                   size, initial_domain, alignment, r);
  75                 drm_gem_object_unreference_unlocked(gobj);
  76                 return r;
  77         }
  78         gobj->driver_private = robj;
  79         *obj = gobj;
  80         return 0;
  81 }
  82
  83 int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
  84                           uint64_t *gpu_addr)
  85 {
  86         struct radeon_bo *robj = obj->driver_private;
  87         int r;
  88
  89         r = radeon_bo_reserve(robj, false);
  90         if (unlikely(r != 0))
  91                 return r;
  92         r = radeon_bo_pin(robj, pin_domain, gpu_addr);
  93         radeon_bo_unreserve(robj);
  94         return r;
  95 }
  96
  97 void radeon_gem_object_unpin(struct drm_gem_object *obj)
  98 {
  99         struct radeon_bo *robj = obj->driver_private;
 100         int r;
 101
 102         r = radeon_bo_reserve(robj, false);
 103         if (likely(r == 0)) {
 104                 radeon_bo_unpin(robj);
 105                 radeon_bo_unreserve(robj);
 106         }
 107 }
 108
 109 int radeon_gem_set_domain(struct drm_gem_object *gobj,
 110                           uint32_t rdomain, uint32_t wdomain)
 111 {
 112         struct radeon_bo *robj;
 113         uint32_t domain;
 114         int r;
 115
 116         robj = gobj->driver_private;
 117         /* work out where to validate the buffer to */
 118         domain = wdomain;
 119         if (!domain) {
 120                 domain = rdomain;
 121         }
 122         if (!domain) {
 123                 /* Do nothings */
 124                 printk(KERN_WARNING "Set domain withou domain !\n");
 125                 return 0;
 126         }
 127         if (domain == RADEON_GEM_DOMAIN_CPU) {
 128                 /* Asking for cpu access wait for object idle */
 129                 r = radeon_bo_wait(robj, NULL, false);
 130                 if (r) {
 131                         printk(KERN_ERR "Failed to wait for object !\n");
 132                         return r;
 133                 }
 134         }
 135         return 0;
 136 }
 137
 138 int radeon_gem_init(struct radeon_device *rdev)
 139 {
 140         INIT_LIST_HEAD(&rdev->gem.objects);
 141         return 0;
 142 }
 143
 144 void radeon_gem_fini(struct radeon_device *rdev)
 145 {
 146         radeon_bo_force_delete(rdev);
 147 }
 148
 149
 150 /*
 151  * GEM ioctls.
 152  */
 153 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 154                           struct drm_file *filp)
 155 {
 156         struct radeon_device *rdev = dev->dev_private;
 157         struct drm_radeon_gem_info *args = data;
 158
 159         args->vram_size = rdev->mc.real_vram_size;
 160         args->vram_visible = rdev->mc.real_vram_size;
 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 - rdev->cp.ring_size - 4096 -
 165                 RADEON_IB_POOL_SIZE*64*1024;
 166         return 0;
 167 }
 168
 169 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 170                            struct drm_file *filp)
 171 {
 172         /* TODO: implement */
 173         DRM_ERROR("unimplemented %s\n", __func__);
 174         return -ENOSYS;
 175 }
 176
 177 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 178                             struct drm_file *filp)
 179 {
 180         /* TODO: implement */
 181         DRM_ERROR("unimplemented %s\n", __func__);
 182         return -ENOSYS;
 183 }
 184
 185 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 186                             struct drm_file *filp)
 187 {
 188         struct radeon_device *rdev = dev->dev_private;
 189         struct drm_radeon_gem_create *args = data;
 190         struct drm_gem_object *gobj;
 191         uint32_t handle;
 192         int r;
 193
 194         /* create a gem object to contain this object in */
 195         args->size = roundup(args->size, PAGE_SIZE);
 196         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 197                                         args->initial_domain, false,
 198                                         false, &gobj);
 199         if (r) {
 200                 return r;
 201         }
 202         r = drm_gem_handle_create(filp, gobj, &handle);
 203         /* drop reference from allocate - handle holds it now */
 204         drm_gem_object_unreference_unlocked(gobj);
 205         if (r) {
 206                 return r;
 207         }
 208         args->handle = handle;
 209         return 0;
 210 }
 211
 212 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 213                                 struct drm_file *filp)
 214 {
 215         /* transition the BO to a domain -
 216          * just validate the BO into a certain domain */
 217         struct drm_radeon_gem_set_domain *args = data;
 218         struct drm_gem_object *gobj;
 219         struct radeon_bo *robj;
 220         int r;
 221
 222         /* for now if someone requests domain CPU -
 223          * just make sure the buffer is finished with */
 224
 225         /* just do a BO wait for now */
 226         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 227         if (gobj == NULL) {
 228                 return -ENOENT;
 229         }
 230         robj = gobj->driver_private;
 231
 232         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 233
 234         drm_gem_object_unreference_unlocked(gobj);
 235         return r;
 236 }
 237
 238 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 239                           struct drm_file *filp)
 240 {
 241         struct drm_radeon_gem_mmap *args = data;
 242         struct drm_gem_object *gobj;
 243         struct radeon_bo *robj;
 244
 245         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 246         if (gobj == NULL) {
 247                 return -ENOENT;
 248         }
 249         robj = gobj->driver_private;
 250         args->addr_ptr = radeon_bo_mmap_offset(robj);
 251         drm_gem_object_unreference_unlocked(gobj);
 252         return 0;
 253 }
 254
 255 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 256                           struct drm_file *filp)
 257 {
 258         struct drm_radeon_gem_busy *args = data;
 259         struct drm_gem_object *gobj;
 260         struct radeon_bo *robj;
 261         int r;
 262         uint32_t cur_placement = 0;
 263
 264         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 265         if (gobj == NULL) {
 266                 return -ENOENT;
 267         }
 268         robj = gobj->driver_private;
 269         r = radeon_bo_wait(robj, &cur_placement, true);
 270         switch (cur_placement) {
 271         case TTM_PL_VRAM:
 272                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 273                 break;
 274         case TTM_PL_TT:
 275                 args->domain = RADEON_GEM_DOMAIN_GTT;
 276                 break;
 277         case TTM_PL_SYSTEM:
 278                 args->domain = RADEON_GEM_DOMAIN_CPU;
 279         default:
 280                 break;
 281         }
 282         drm_gem_object_unreference_unlocked(gobj);
 283         return r;
 284 }
 285
 286 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 287                               struct drm_file *filp)
 288 {
 289         struct drm_radeon_gem_wait_idle *args = data;
 290         struct drm_gem_object *gobj;
 291         struct radeon_bo *robj;
 292         int r;
 293
 294         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 295         if (gobj == NULL) {
 296                 return -ENOENT;
 297         }
 298         robj = gobj->driver_private;
 299         r = radeon_bo_wait(robj, NULL, false);
 300         /* callback hw specific functions if any */
 301         if (robj->rdev->asic->ioctl_wait_idle)
 302                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 303         drm_gem_object_unreference_unlocked(gobj);
 304         return r;
 305 }
 306
 307 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 308                                 struct drm_file *filp)
 309 {
 310         struct drm_radeon_gem_set_tiling *args = data;
 311         struct drm_gem_object *gobj;
 312         struct radeon_bo *robj;
 313         int r = 0;
 314
 315         DRM_DEBUG("%d \n", args->handle);
 316         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 317         if (gobj == NULL)
 318                 return -ENOENT;
 319         robj = gobj->driver_private;
 320         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 321         drm_gem_object_unreference_unlocked(gobj);
 322         return r;
 323 }
 324
 325 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 326                                 struct drm_file *filp)
 327 {
 328         struct drm_radeon_gem_get_tiling *args = data;
 329         struct drm_gem_object *gobj;
 330         struct radeon_bo *rbo;
 331         int r = 0;
 332
 333         DRM_DEBUG("\n");
 334         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 335         if (gobj == NULL)
 336                 return -ENOENT;
 337         rbo = gobj->driver_private;
 338         r = radeon_bo_reserve(rbo, false);
 339         if (unlikely(r != 0))
 340                 goto out;
 341         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 342         radeon_bo_unreserve(rbo);
 343 out:
 344         drm_gem_object_unreference_unlocked(gobj);
 345         return r;
 346 }