drivers/gpu/drm/qxl/qxl

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This source file includes following definitions.
qxl_ttm_bo_destroy
qxl_ttm_bo_is_qxl_bo
qxl_ttm_placement_from_domain
qxl_bo_create
qxl_bo_kmap
qxl_bo_kmap_atomic_page
qxl_bo_kunmap
qxl_bo_kunmap_atomic_page
qxl_bo_unref
qxl_bo_ref
__qxl_bo_pin
__qxl_bo_unpin
qxl_bo_pin
qxl_bo_unpin
qxl_bo_force_delete
qxl_bo_init
qxl_bo_fini
qxl_bo_check_id
qxl_surf_evict
qxl_vram_evict
   1 /*
   2  * Copyright 2013 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25 
  26 #include "qxl_drv.h"
  27 #include "qxl_object.h"
  28 
  29 #include <linux/io-mapping.h>
  30 static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
  31 {
  32         struct qxl_bo *bo;
  33         struct qxl_device *qdev;
  34 
  35         bo = to_qxl_bo(tbo);
  36         qdev = (struct qxl_device *)bo->tbo.base.dev->dev_private;
  37 
  38         qxl_surface_evict(qdev, bo, false);
  39         WARN_ON_ONCE(bo->map_count > 0);
  40         mutex_lock(&qdev->gem.mutex);
  41         list_del_init(&bo->list);
  42         mutex_unlock(&qdev->gem.mutex);
  43         drm_gem_object_release(&bo->tbo.base);
  44         kfree(bo);
  45 }
  46 
  47 bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
  48 {
  49         if (bo->destroy == &qxl_ttm_bo_destroy)
  50                 return true;
  51         return false;
  52 }
  53 
  54 void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
  55 {
  56         u32 c = 0;
  57         u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0;
  58         unsigned int i;
  59 
  60         qbo->placement.placement = qbo->placements;
  61         qbo->placement.busy_placement = qbo->placements;
  62         if (domain == QXL_GEM_DOMAIN_VRAM)
  63                 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
  64         if (domain == QXL_GEM_DOMAIN_SURFACE) {
  65                 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV | pflag;
  66                 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
  67         }
  68         if (domain == QXL_GEM_DOMAIN_CPU)
  69                 qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag;
  70         if (!c)
  71                 qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
  72         qbo->placement.num_placement = c;
  73         qbo->placement.num_busy_placement = c;
  74         for (i = 0; i < c; ++i) {
  75                 qbo->placements[i].fpfn = 0;
  76                 qbo->placements[i].lpfn = 0;
  77         }
  78 }
  79 
  80 int qxl_bo_create(struct qxl_device *qdev,
  81                   unsigned long size, bool kernel, bool pinned, u32 domain,
  82                   struct qxl_surface *surf,
  83                   struct qxl_bo **bo_ptr)
  84 {
  85         struct qxl_bo *bo;
  86         enum ttm_bo_type type;
  87         int r;
  88 
  89         if (kernel)
  90                 type = ttm_bo_type_kernel;
  91         else
  92                 type = ttm_bo_type_device;
  93         *bo_ptr = NULL;
  94         bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL);
  95         if (bo == NULL)
  96                 return -ENOMEM;
  97         size = roundup(size, PAGE_SIZE);
  98         r = drm_gem_object_init(&qdev->ddev, &bo->tbo.base, size);
  99         if (unlikely(r)) {
 100                 kfree(bo);
 101                 return r;
 102         }
 103         bo->type = domain;
 104         bo->pin_count = pinned ? 1 : 0;
 105         bo->surface_id = 0;
 106         INIT_LIST_HEAD(&bo->list);
 107 
 108         if (surf)
 109                 bo->surf = *surf;
 110 
 111         qxl_ttm_placement_from_domain(bo, domain, pinned);
 112 
 113         r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
 114                         &bo->placement, 0, !kernel, size,
 115                         NULL, NULL, &qxl_ttm_bo_destroy);
 116         if (unlikely(r != 0)) {
 117                 if (r != -ERESTARTSYS)
 118                         dev_err(qdev->ddev.dev,
 119                                 "object_init failed for (%lu, 0x%08X)\n",
 120                                 size, domain);
 121                 return r;
 122         }
 123         *bo_ptr = bo;
 124         return 0;
 125 }
 126 
 127 int qxl_bo_kmap(struct qxl_bo *bo, void **ptr)
 128 {
 129         bool is_iomem;
 130         int r;
 131 
 132         if (bo->kptr) {
 133                 if (ptr)
 134                         *ptr = bo->kptr;
 135                 bo->map_count++;
 136                 return 0;
 137         }
 138         r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
 139         if (r)
 140                 return r;
 141         bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
 142         if (ptr)
 143                 *ptr = bo->kptr;
 144         bo->map_count = 1;
 145         return 0;
 146 }
 147 
 148 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
 149                               struct qxl_bo *bo, int page_offset)
 150 {
 151         struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
 152         void *rptr;
 153         int ret;
 154         struct io_mapping *map;
 155 
 156         if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
 157                 map = qdev->vram_mapping;
 158         else if (bo->tbo.mem.mem_type == TTM_PL_PRIV)
 159                 map = qdev->surface_mapping;
 160         else
 161                 goto fallback;
 162 
 163         (void) ttm_mem_io_lock(man, false);
 164         ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem);
 165         ttm_mem_io_unlock(man);
 166 
 167         return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset);
 168 fallback:
 169         if (bo->kptr) {
 170                 rptr = bo->kptr + (page_offset * PAGE_SIZE);
 171                 return rptr;
 172         }
 173 
 174         ret = qxl_bo_kmap(bo, &rptr);
 175         if (ret)
 176                 return NULL;
 177 
 178         rptr += page_offset * PAGE_SIZE;
 179         return rptr;
 180 }
 181 
 182 void qxl_bo_kunmap(struct qxl_bo *bo)
 183 {
 184         if (bo->kptr == NULL)
 185                 return;
 186         bo->map_count--;
 187         if (bo->map_count > 0)
 188                 return;
 189         bo->kptr = NULL;
 190         ttm_bo_kunmap(&bo->kmap);
 191 }
 192 
 193 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
 194                                struct qxl_bo *bo, void *pmap)
 195 {
 196         struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
 197 
 198         if ((bo->tbo.mem.mem_type != TTM_PL_VRAM) &&
 199             (bo->tbo.mem.mem_type != TTM_PL_PRIV))
 200                 goto fallback;
 201 
 202         io_mapping_unmap_atomic(pmap);
 203 
 204         (void) ttm_mem_io_lock(man, false);
 205         ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem);
 206         ttm_mem_io_unlock(man);
 207         return;
 208  fallback:
 209         qxl_bo_kunmap(bo);
 210 }
 211 
 212 void qxl_bo_unref(struct qxl_bo **bo)
 213 {
 214         if ((*bo) == NULL)
 215                 return;
 216 
 217         drm_gem_object_put_unlocked(&(*bo)->tbo.base);
 218         *bo = NULL;
 219 }
 220 
 221 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo)
 222 {
 223         drm_gem_object_get(&bo->tbo.base);
 224         return bo;
 225 }
 226 
 227 static int __qxl_bo_pin(struct qxl_bo *bo)
 228 {
 229         struct ttm_operation_ctx ctx = { false, false };
 230         struct drm_device *ddev = bo->tbo.base.dev;
 231         int r;
 232 
 233         if (bo->pin_count) {
 234                 bo->pin_count++;
 235                 return 0;
 236         }
 237         qxl_ttm_placement_from_domain(bo, bo->type, true);
 238         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 239         if (likely(r == 0)) {
 240                 bo->pin_count = 1;
 241         }
 242         if (unlikely(r != 0))
 243                 dev_err(ddev->dev, "%p pin failed\n", bo);
 244         return r;
 245 }
 246 
 247 static int __qxl_bo_unpin(struct qxl_bo *bo)
 248 {
 249         struct ttm_operation_ctx ctx = { false, false };
 250         struct drm_device *ddev = bo->tbo.base.dev;
 251         int r, i;
 252 
 253         if (!bo->pin_count) {
 254                 dev_warn(ddev->dev, "%p unpin not necessary\n", bo);
 255                 return 0;
 256         }
 257         bo->pin_count--;
 258         if (bo->pin_count)
 259                 return 0;
 260         for (i = 0; i < bo->placement.num_placement; i++)
 261                 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
 262         r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
 263         if (unlikely(r != 0))
 264                 dev_err(ddev->dev, "%p validate failed for unpin\n", bo);
 265         return r;
 266 }
 267 
 268 /*
 269  * Reserve the BO before pinning the object.  If the BO was reserved
 270  * beforehand, use the internal version directly __qxl_bo_pin.
 271  *
 272  */
 273 int qxl_bo_pin(struct qxl_bo *bo)
 274 {
 275         int r;
 276 
 277         r = qxl_bo_reserve(bo, false);
 278         if (r)
 279                 return r;
 280 
 281         r = __qxl_bo_pin(bo);
 282         qxl_bo_unreserve(bo);
 283         return r;
 284 }
 285 
 286 /*
 287  * Reserve the BO before pinning the object.  If the BO was reserved
 288  * beforehand, use the internal version directly __qxl_bo_unpin.
 289  *
 290  */
 291 int qxl_bo_unpin(struct qxl_bo *bo)
 292 {
 293         int r;
 294 
 295         r = qxl_bo_reserve(bo, false);
 296         if (r)
 297                 return r;
 298 
 299         r = __qxl_bo_unpin(bo);
 300         qxl_bo_unreserve(bo);
 301         return r;
 302 }
 303 
 304 void qxl_bo_force_delete(struct qxl_device *qdev)
 305 {
 306         struct qxl_bo *bo, *n;
 307 
 308         if (list_empty(&qdev->gem.objects))
 309                 return;
 310         dev_err(qdev->ddev.dev, "Userspace still has active objects !\n");
 311         list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) {
 312                 dev_err(qdev->ddev.dev, "%p %p %lu %lu force free\n",
 313                         &bo->tbo.base, bo, (unsigned long)bo->tbo.base.size,
 314                         *((unsigned long *)&bo->tbo.base.refcount));
 315                 mutex_lock(&qdev->gem.mutex);
 316                 list_del_init(&bo->list);
 317                 mutex_unlock(&qdev->gem.mutex);
 318                 /* this should unref the ttm bo */
 319                 drm_gem_object_put_unlocked(&bo->tbo.base);
 320         }
 321 }
 322 
 323 int qxl_bo_init(struct qxl_device *qdev)
 324 {
 325         return qxl_ttm_init(qdev);
 326 }
 327 
 328 void qxl_bo_fini(struct qxl_device *qdev)
 329 {
 330         qxl_ttm_fini(qdev);
 331 }
 332 
 333 int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo)
 334 {
 335         int ret;
 336 
 337         if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) {
 338                 /* allocate a surface id for this surface now */
 339                 ret = qxl_surface_id_alloc(qdev, bo);
 340                 if (ret)
 341                         return ret;
 342 
 343                 ret = qxl_hw_surface_alloc(qdev, bo);
 344                 if (ret)
 345                         return ret;
 346         }
 347         return 0;
 348 }
 349 
 350 int qxl_surf_evict(struct qxl_device *qdev)
 351 {
 352         return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV);
 353 }
 354 
 355 int qxl_vram_evict(struct qxl_device *qdev)
 356 {
 357         return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM);
 358 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/gpu/drm/qxl/qxl_object.c

DEFINITIONS
