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->gem_base.dev->dev_private; 37 38 qxl_surface_evict(qdev, bo, false); 39 mutex_lock(&qdev->gem.mutex); 40 list_del_init(&bo->list); 41 mutex_unlock(&qdev->gem.mutex); 42 drm_gem_object_release(&bo->gem_base); 43 kfree(bo); 44 } 45 46 bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo) 47 { 48 if (bo->destroy == &qxl_ttm_bo_destroy) 49 return true; 50 return false; 51 } 52 53 void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned) 54 { 55 u32 c = 0; 56 u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0; 57 unsigned i; 58 59 qbo->placement.placement = qbo->placements; 60 qbo->placement.busy_placement = qbo->placements; 61 if (domain == QXL_GEM_DOMAIN_VRAM) 62 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag; 63 if (domain == QXL_GEM_DOMAIN_SURFACE) 64 qbo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV | pflag; 65 if (domain == QXL_GEM_DOMAIN_CPU) 66 qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag; 67 if (!c) 68 qbo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; 69 qbo->placement.num_placement = c; 70 qbo->placement.num_busy_placement = c; 71 for (i = 0; i < c; ++i) { 72 qbo->placements[i].fpfn = 0; 73 qbo->placements[i].lpfn = 0; 74 } 75 } 76 77 78 int qxl_bo_create(struct qxl_device *qdev, 79 unsigned long size, bool kernel, bool pinned, u32 domain, 80 struct qxl_surface *surf, 81 struct qxl_bo **bo_ptr) 82 { 83 struct qxl_bo *bo; 84 enum ttm_bo_type type; 85 int r; 86 87 if (kernel) 88 type = ttm_bo_type_kernel; 89 else 90 type = ttm_bo_type_device; 91 *bo_ptr = NULL; 92 bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL); 93 if (bo == NULL) 94 return -ENOMEM; 95 size = roundup(size, PAGE_SIZE); 96 r = drm_gem_object_init(&qdev->ddev, &bo->gem_base, size); 97 if (unlikely(r)) { 98 kfree(bo); 99 return r; 100 } 101 bo->type = domain; 102 bo->pin_count = pinned ? 1 : 0; 103 bo->surface_id = 0; 104 INIT_LIST_HEAD(&bo->list); 105 106 if (surf) 107 bo->surf = *surf; 108 109 qxl_ttm_placement_from_domain(bo, domain, pinned); 110 111 r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type, 112 &bo->placement, 0, !kernel, NULL, size, 113 NULL, NULL, &qxl_ttm_bo_destroy); 114 if (unlikely(r != 0)) { 115 if (r != -ERESTARTSYS) 116 dev_err(qdev->ddev.dev, 117 "object_init failed for (%lu, 0x%08X)\n", 118 size, domain); 119 return r; 120 } 121 *bo_ptr = bo; 122 return 0; 123 } 124 125 int qxl_bo_kmap(struct qxl_bo *bo, void **ptr) 126 { 127 bool is_iomem; 128 int r; 129 130 if (bo->kptr) { 131 if (ptr) 132 *ptr = bo->kptr; 133 return 0; 134 } 135 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 136 if (r) 137 return r; 138 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 139 if (ptr) 140 *ptr = bo->kptr; 141 return 0; 142 } 143 144 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, 145 struct qxl_bo *bo, int page_offset) 146 { 147 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 148 void *rptr; 149 int ret; 150 struct io_mapping *map; 151 152 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 153 map = qdev->vram_mapping; 154 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV) 155 map = qdev->surface_mapping; 156 else 157 goto fallback; 158 159 (void) ttm_mem_io_lock(man, false); 160 ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem); 161 ttm_mem_io_unlock(man); 162 163 return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset); 164 fallback: 165 if (bo->kptr) { 166 rptr = bo->kptr + (page_offset * PAGE_SIZE); 167 return rptr; 168 } 169 170 ret = qxl_bo_kmap(bo, &rptr); 171 if (ret) 172 return NULL; 173 174 rptr += page_offset * PAGE_SIZE; 175 return rptr; 176 } 177 178 void qxl_bo_kunmap(struct qxl_bo *bo) 179 { 180 if (bo->kptr == NULL) 181 return; 182 bo->kptr = NULL; 183 ttm_bo_kunmap(&bo->kmap); 184 } 185 186 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, 187 struct qxl_bo *bo, void *pmap) 188 { 189 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 190 struct io_mapping *map; 191 192 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 193 map = qdev->vram_mapping; 194 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV) 195 map = qdev->surface_mapping; 196 else 197 goto fallback; 198 199 io_mapping_unmap_atomic(pmap); 200 201 (void) ttm_mem_io_lock(man, false); 202 ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem); 203 ttm_mem_io_unlock(man); 204 return ; 205 fallback: 206 qxl_bo_kunmap(bo); 207 } 208 209 void qxl_bo_unref(struct qxl_bo **bo) 210 { 211 if ((*bo) == NULL) 212 return; 213 214 drm_gem_object_unreference_unlocked(&(*bo)->gem_base); 215 *bo = NULL; 216 } 217 218 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo) 219 { 220 drm_gem_object_reference(&bo->gem_base); 221 return bo; 222 } 223 224 static int __qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr) 225 { 226 struct drm_device *ddev = bo->gem_base.dev; 227 int r; 228 229 if (bo->pin_count) { 230 bo->pin_count++; 231 if (gpu_addr) 232 *gpu_addr = qxl_bo_gpu_offset(bo); 233 return 0; 234 } 235 qxl_ttm_placement_from_domain(bo, domain, true); 236 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 237 if (likely(r == 0)) { 238 bo->pin_count = 1; 239 if (gpu_addr != NULL) 240 *gpu_addr = qxl_bo_gpu_offset(bo); 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 drm_device *ddev = bo->gem_base.dev; 250 int r, i; 251 252 if (!bo->pin_count) { 253 dev_warn(ddev->dev, "%p unpin not necessary\n", bo); 254 return 0; 255 } 256 bo->pin_count--; 257 if (bo->pin_count) 258 return 0; 259 for (i = 0; i < bo->placement.num_placement; i++) 260 bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; 261 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 262 if (unlikely(r != 0)) 263 dev_err(ddev->dev, "%p validate failed for unpin\n", bo); 264 return r; 265 } 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, u32 domain, u64 *gpu_addr) 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, bo->type, NULL); 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->gem_base, bo, (unsigned long)bo->gem_base.size, 314 *((unsigned long *)&bo->gem_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_unreference_unlocked(&bo->gem_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 if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) { 337 /* allocate a surface id for this surface now */ 338 ret = qxl_surface_id_alloc(qdev, bo); 339 if (ret) 340 return ret; 341 342 ret = qxl_hw_surface_alloc(qdev, bo, NULL); 343 if (ret) 344 return ret; 345 } 346 return 0; 347 } 348 349 int qxl_surf_evict(struct qxl_device *qdev) 350 { 351 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV); 352 } 353 354 int qxl_vram_evict(struct qxl_device *qdev) 355 { 356 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM); 357 } 358