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         /* FIXME: reeimplement */
 117         robj = gobj->driver_private;
 118         /* work out where to validate the buffer to */
 119         domain = wdomain;
 120         if (!domain) {
 121                 domain = rdomain;
 122         }
 123         if (!domain) {
 124                 /* Do nothings */
 125                 printk(KERN_WARNING "Set domain withou domain !\n");
 126                 return 0;
 127         }
 128         if (domain == RADEON_GEM_DOMAIN_CPU) {
 129                 /* Asking for cpu access wait for object idle */
 130                 r = radeon_bo_wait(robj, NULL, false);
 131                 if (r) {
 132                         printk(KERN_ERR "Failed to wait for object !\n");
 133                         return r;
 134                 }
 135         }
 136         return 0;
 137 }
 138
 139 int radeon_gem_init(struct radeon_device *rdev)
 140 {
 141         INIT_LIST_HEAD(&rdev->gem.objects);
 142         return 0;
 143 }
 144
 145 void radeon_gem_fini(struct radeon_device *rdev)
 146 {
 147         radeon_bo_force_delete(rdev);
 148 }
 149
 150
 151 /*
 152  * GEM ioctls.
 153  */
 154 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 155                           struct drm_file *filp)
 156 {
 157         struct radeon_device *rdev = dev->dev_private;
 158         struct drm_radeon_gem_info *args = data;
 159
 160         args->vram_size = rdev->mc.real_vram_size;
 161         args->vram_visible = rdev->mc.real_vram_size;
 162         if (rdev->stollen_vga_memory)
 163                 args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 164         args->vram_visible -= radeon_fbdev_total_size(rdev);
 165         args->gart_size = rdev->mc.gtt_size - rdev->cp.ring_size - 4096 -
 166                 RADEON_IB_POOL_SIZE*64*1024;
 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         if (r) {
 205                 drm_gem_object_unreference_unlocked(gobj);
 206                 return r;
 207         }
 208         drm_gem_object_handle_unreference_unlocked(gobj);
 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 = gobj->driver_private;
 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_gem_mmap_ioctl(struct drm_device *dev, void *data,
 240                           struct drm_file *filp)
 241 {
 242         struct drm_radeon_gem_mmap *args = data;
 243         struct drm_gem_object *gobj;
 244         struct radeon_bo *robj;
 245
 246         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 247         if (gobj == NULL) {
 248                 return -ENOENT;
 249         }
 250         robj = gobj->driver_private;
 251         args->addr_ptr = radeon_bo_mmap_offset(robj);
 252         drm_gem_object_unreference_unlocked(gobj);
 253         return 0;
 254 }
 255
 256 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 257                           struct drm_file *filp)
 258 {
 259         struct drm_radeon_gem_busy *args = data;
 260         struct drm_gem_object *gobj;
 261         struct radeon_bo *robj;
 262         int r;
 263         uint32_t cur_placement = 0;
 264
 265         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 266         if (gobj == NULL) {
 267                 return -ENOENT;
 268         }
 269         robj = gobj->driver_private;
 270         r = radeon_bo_wait(robj, &cur_placement, true);
 271         switch (cur_placement) {
 272         case TTM_PL_VRAM:
 273                 args->domain = RADEON_GEM_DOMAIN_VRAM;
 274                 break;
 275         case TTM_PL_TT:
 276                 args->domain = RADEON_GEM_DOMAIN_GTT;
 277                 break;
 278         case TTM_PL_SYSTEM:
 279                 args->domain = RADEON_GEM_DOMAIN_CPU;
 280         default:
 281                 break;
 282         }
 283         drm_gem_object_unreference_unlocked(gobj);
 284         return r;
 285 }
 286
 287 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 288                               struct drm_file *filp)
 289 {
 290         struct drm_radeon_gem_wait_idle *args = data;
 291         struct drm_gem_object *gobj;
 292         struct radeon_bo *robj;
 293         int r;
 294
 295         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 296         if (gobj == NULL) {
 297                 return -ENOENT;
 298         }
 299         robj = gobj->driver_private;
 300         r = radeon_bo_wait(robj, NULL, false);
 301         /* callback hw specific functions if any */
 302         if (robj->rdev->asic->ioctl_wait_idle)
 303                 robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
 304         drm_gem_object_unreference_unlocked(gobj);
 305         return r;
 306 }
 307
 308 int radeon_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
 309                                 struct drm_file *filp)
 310 {
 311         struct drm_radeon_gem_set_tiling *args = data;
 312         struct drm_gem_object *gobj;
 313         struct radeon_bo *robj;
 314         int r = 0;
 315
 316         DRM_DEBUG("%d \n", args->handle);
 317         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 318         if (gobj == NULL)
 319                 return -ENOENT;
 320         robj = gobj->driver_private;
 321         r = radeon_bo_set_tiling_flags(robj, args->tiling_flags, args->pitch);
 322         drm_gem_object_unreference_unlocked(gobj);
 323         return r;
 324 }
 325
 326 int radeon_gem_get_tiling_ioctl(struct drm_device *dev, void *data,
 327                                 struct drm_file *filp)
 328 {
 329         struct drm_radeon_gem_get_tiling *args = data;
 330         struct drm_gem_object *gobj;
 331         struct radeon_bo *rbo;
 332         int r = 0;
 333
 334         DRM_DEBUG("\n");
 335         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 336         if (gobj == NULL)
 337                 return -ENOENT;
 338         rbo = gobj->driver_private;
 339         r = radeon_bo_reserve(rbo, false);
 340         if (unlikely(r != 0))
 341                 goto out;
 342         radeon_bo_get_tiling_flags(rbo, &args->tiling_flags, &args->pitch);
 343         radeon_bo_unreserve(rbo);
 344 out:
 345         drm_gem_object_unreference_unlocked(gobj);
 346         return r;
 347 }