drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c

   1 /*
   2  * Copyright 2015 Advanced Micro Devices, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26 /*
  27  * Authors:
  28  *    Christian König <deathsimple@vodafone.de>
  29  */
  30
  31 #include <drm/drmP.h>
  32 #include "amdgpu.h"
  33 #include "amdgpu_trace.h"
  34
  35 static int amdgpu_bo_list_create(struct amdgpu_fpriv *fpriv,
  36                                  struct amdgpu_bo_list **result,
  37                                  int *id)
  38 {
  39         int r;
  40
  41         *result = kzalloc(sizeof(struct amdgpu_bo_list), GFP_KERNEL);
  42         if (!*result)
  43                 return -ENOMEM;
  44
  45         mutex_lock(&fpriv->bo_list_lock);
  46         r = idr_alloc(&fpriv->bo_list_handles, *result,
  47                       1, 0, GFP_KERNEL);
  48         if (r < 0) {
  49                 mutex_unlock(&fpriv->bo_list_lock);
  50                 kfree(*result);
  51                 return r;
  52         }
  53         *id = r;
  54
  55         mutex_init(&(*result)->lock);
  56         (*result)->num_entries = 0;
  57         (*result)->array = NULL;
  58
  59         mutex_lock(&(*result)->lock);
  60         mutex_unlock(&fpriv->bo_list_lock);
  61
  62         return 0;
  63 }
  64
  65 static void amdgpu_bo_list_destroy(struct amdgpu_fpriv *fpriv, int id)
  66 {
  67         struct amdgpu_bo_list *list;
  68
  69         mutex_lock(&fpriv->bo_list_lock);
  70         list = idr_find(&fpriv->bo_list_handles, id);
  71         if (list) {
  72                 mutex_lock(&list->lock);
  73                 idr_remove(&fpriv->bo_list_handles, id);
  74                 mutex_unlock(&list->lock);
  75                 amdgpu_bo_list_free(list);
  76         }
  77         mutex_unlock(&fpriv->bo_list_lock);
  78 }
  79
  80 static int amdgpu_bo_list_set(struct amdgpu_device *adev,
  81                                      struct drm_file *filp,
  82                                      struct amdgpu_bo_list *list,
  83                                      struct drm_amdgpu_bo_list_entry *info,
  84                                      unsigned num_entries)
  85 {
  86         struct amdgpu_bo_list_entry *array;
  87         struct amdgpu_bo *gds_obj = adev->gds.gds_gfx_bo;
  88         struct amdgpu_bo *gws_obj = adev->gds.gws_gfx_bo;
  89         struct amdgpu_bo *oa_obj = adev->gds.oa_gfx_bo;
  90
  91         bool has_userptr = false;
  92         unsigned i;
  93
  94         array = drm_malloc_ab(num_entries, sizeof(struct amdgpu_bo_list_entry));
  95         if (!array)
  96                 return -ENOMEM;
  97         memset(array, 0, num_entries * sizeof(struct amdgpu_bo_list_entry));
  98
  99         for (i = 0; i < num_entries; ++i) {
 100                 struct amdgpu_bo_list_entry *entry = &array[i];
 101                 struct drm_gem_object *gobj;
 102
 103                 gobj = drm_gem_object_lookup(adev->ddev, filp, info[i].bo_handle);
 104                 if (!gobj)
 105                         goto error_free;
 106
 107                 entry->robj = amdgpu_bo_ref(gem_to_amdgpu_bo(gobj));
 108                 drm_gem_object_unreference_unlocked(gobj);
 109                 entry->priority = info[i].bo_priority;
 110                 entry->prefered_domains = entry->robj->initial_domain;
 111                 entry->allowed_domains = entry->prefered_domains;
 112                 if (entry->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
 113                         entry->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
 114                 if (amdgpu_ttm_tt_has_userptr(entry->robj->tbo.ttm)) {
 115                         has_userptr = true;
 116                         entry->prefered_domains = AMDGPU_GEM_DOMAIN_GTT;
 117                         entry->allowed_domains = AMDGPU_GEM_DOMAIN_GTT;
 118                 }
 119                 entry->tv.bo = &entry->robj->tbo;
 120                 entry->tv.shared = true;
 121
 122                 if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_GDS)
 123                         gds_obj = entry->robj;
 124                 if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_GWS)
 125                         gws_obj = entry->robj;
 126                 if (entry->prefered_domains == AMDGPU_GEM_DOMAIN_OA)
 127                         oa_obj = entry->robj;
 128
 129                 trace_amdgpu_bo_list_set(list, entry->robj);
 130         }
 131
 132         for (i = 0; i < list->num_entries; ++i)
 133                 amdgpu_bo_unref(&list->array[i].robj);
 134
 135         drm_free_large(list->array);
 136
 137         list->gds_obj = gds_obj;
 138         list->gws_obj = gws_obj;
 139         list->oa_obj = oa_obj;
 140         list->has_userptr = has_userptr;
 141         list->array = array;
 142         list->num_entries = num_entries;
 143
 144         return 0;
 145
 146 error_free:
 147         drm_free_large(array);
 148         return -ENOENT;
 149 }
 150
 151 struct amdgpu_bo_list *
 152 amdgpu_bo_list_get(struct amdgpu_fpriv *fpriv, int id)
 153 {
 154         struct amdgpu_bo_list *result;
 155
 156         mutex_lock(&fpriv->bo_list_lock);
 157         result = idr_find(&fpriv->bo_list_handles, id);
 158         if (result)
 159                 mutex_lock(&result->lock);
 160         mutex_unlock(&fpriv->bo_list_lock);
 161         return result;
 162 }
 163
 164 void amdgpu_bo_list_put(struct amdgpu_bo_list *list)
 165 {
 166         mutex_unlock(&list->lock);
 167 }
 168
 169 void amdgpu_bo_list_free(struct amdgpu_bo_list *list)
 170 {
 171         unsigned i;
 172
 173         for (i = 0; i < list->num_entries; ++i)
 174                 amdgpu_bo_unref(&list->array[i].robj);
 175
 176         mutex_destroy(&list->lock);
 177         drm_free_large(list->array);
 178         kfree(list);
 179 }
 180
 181 int amdgpu_bo_list_ioctl(struct drm_device *dev, void *data,
 182                                 struct drm_file *filp)
 183 {
 184         const uint32_t info_size = sizeof(struct drm_amdgpu_bo_list_entry);
 185
 186         struct amdgpu_device *adev = dev->dev_private;
 187         struct amdgpu_fpriv *fpriv = filp->driver_priv;
 188         union drm_amdgpu_bo_list *args = data;
 189         uint32_t handle = args->in.list_handle;
 190         const void __user *uptr = (const void*)(long)args->in.bo_info_ptr;
 191
 192         struct drm_amdgpu_bo_list_entry *info;
 193         struct amdgpu_bo_list *list;
 194
 195         int r;
 196
 197         info = drm_malloc_ab(args->in.bo_number,
 198                              sizeof(struct drm_amdgpu_bo_list_entry));
 199         if (!info)
 200                 return -ENOMEM;
 201
 202         /* copy the handle array from userspace to a kernel buffer */
 203         r = -EFAULT;
 204         if (likely(info_size == args->in.bo_info_size)) {
 205                 unsigned long bytes = args->in.bo_number *
 206                         args->in.bo_info_size;
 207
 208                 if (copy_from_user(info, uptr, bytes))
 209                         goto error_free;
 210
 211         } else {
 212                 unsigned long bytes = min(args->in.bo_info_size, info_size);
 213                 unsigned i;
 214
 215                 memset(info, 0, args->in.bo_number * info_size);
 216                 for (i = 0; i < args->in.bo_number; ++i) {
 217                         if (copy_from_user(&info[i], uptr, bytes))
 218                                 goto error_free;
 219
 220                         uptr += args->in.bo_info_size;
 221                 }
 222         }
 223
 224         switch (args->in.operation) {
 225         case AMDGPU_BO_LIST_OP_CREATE:
 226                 r = amdgpu_bo_list_create(fpriv, &list, &handle);
 227                 if (r)
 228                         goto error_free;
 229
 230                 r = amdgpu_bo_list_set(adev, filp, list, info,
 231                                               args->in.bo_number);
 232                 amdgpu_bo_list_put(list);
 233                 if (r)
 234                         goto error_free;
 235
 236                 break;
 237
 238         case AMDGPU_BO_LIST_OP_DESTROY:
 239                 amdgpu_bo_list_destroy(fpriv, handle);
 240                 handle = 0;
 241                 break;
 242
 243         case AMDGPU_BO_LIST_OP_UPDATE:
 244                 r = -ENOENT;
 245                 list = amdgpu_bo_list_get(fpriv, handle);
 246                 if (!list)
 247                         goto error_free;
 248
 249                 r = amdgpu_bo_list_set(adev, filp, list, info,
 250                                               args->in.bo_number);
 251                 amdgpu_bo_list_put(list);
 252                 if (r)
 253                         goto error_free;
 254
 255                 break;
 256
 257         default:
 258                 r = -EINVAL;
 259                 goto error_free;
 260         }
 261
 262         memset(args, 0, sizeof(*args));
 263         args->out.list_handle = handle;
 264         drm_free_large(info);
 265
 266         return 0;
 267
 268 error_free:
 269         drm_free_large(info);
 270         return r;
 271 }