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 = container_of(tbo, struct qxl_bo, tbo); 36 qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 37 38 qxl_surface_evict(qdev, bo, false); 39 qxl_fence_fini(&bo->fence); 40 mutex_lock(&qdev->gem.mutex); 41 list_del_init(&bo->list); 42 mutex_unlock(&qdev->gem.mutex); 43 drm_gem_object_release(&bo->gem_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 59 qbo->placement.fpfn = 0; 60 qbo->placement.lpfn = 0; 61 qbo->placement.placement = qbo->placements; 62 qbo->placement.busy_placement = qbo->placements; 63 if (domain == QXL_GEM_DOMAIN_VRAM) 64 qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag; 65 if (domain == QXL_GEM_DOMAIN_SURFACE) 66 qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0 | pflag; 67 if (domain == QXL_GEM_DOMAIN_CPU) 68 qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag; 69 if (!c) 70 qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; 71 qbo->placement.num_placement = c; 72 qbo->placement.num_busy_placement = c; 73 } 74 75 76 int qxl_bo_create(struct qxl_device *qdev, 77 unsigned long size, bool kernel, bool pinned, u32 domain, 78 struct qxl_surface *surf, 79 struct qxl_bo **bo_ptr) 80 { 81 struct qxl_bo *bo; 82 enum ttm_bo_type type; 83 int r; 84 85 if (unlikely(qdev->mman.bdev.dev_mapping == NULL)) 86 qdev->mman.bdev.dev_mapping = qdev->ddev->dev_mapping; 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->gem_base.driver_private = NULL; 102 bo->type = domain; 103 bo->pin_count = pinned ? 1 : 0; 104 bo->surface_id = 0; 105 qxl_fence_init(qdev, &bo->fence); 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, NULL, size, 115 NULL, &qxl_ttm_bo_destroy); 116 if (unlikely(r != 0)) { 117 if (r != -ERESTARTSYS) 118 dev_err(qdev->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 return 0; 136 } 137 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 138 if (r) 139 return r; 140 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 141 if (ptr) 142 *ptr = bo->kptr; 143 return 0; 144 } 145 146 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, 147 struct qxl_bo *bo, int page_offset) 148 { 149 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 150 void *rptr; 151 int ret; 152 struct io_mapping *map; 153 154 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 155 map = qdev->vram_mapping; 156 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 157 map = qdev->surface_mapping; 158 else 159 goto fallback; 160 161 (void) ttm_mem_io_lock(man, false); 162 ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem); 163 ttm_mem_io_unlock(man); 164 165 return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset); 166 fallback: 167 if (bo->kptr) { 168 rptr = bo->kptr + (page_offset * PAGE_SIZE); 169 return rptr; 170 } 171 172 ret = qxl_bo_kmap(bo, &rptr); 173 if (ret) 174 return NULL; 175 176 rptr += page_offset * PAGE_SIZE; 177 return rptr; 178 } 179 180 void qxl_bo_kunmap(struct qxl_bo *bo) 181 { 182 if (bo->kptr == NULL) 183 return; 184 bo->kptr = NULL; 185 ttm_bo_kunmap(&bo->kmap); 186 } 187 188 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, 189 struct qxl_bo *bo, void *pmap) 190 { 191 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 192 struct io_mapping *map; 193 194 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 195 map = qdev->vram_mapping; 196 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 197 map = qdev->surface_mapping; 198 else 199 goto fallback; 200 201 io_mapping_unmap_atomic(pmap); 202 203 (void) ttm_mem_io_lock(man, false); 204 ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem); 205 ttm_mem_io_unlock(man); 206 return ; 207 fallback: 208 qxl_bo_kunmap(bo); 209 } 210 211 void qxl_bo_unref(struct qxl_bo **bo) 212 { 213 struct ttm_buffer_object *tbo; 214 215 if ((*bo) == NULL) 216 return; 217 tbo = &((*bo)->tbo); 218 ttm_bo_unref(&tbo); 219 if (tbo == NULL) 220 *bo = NULL; 221 } 222 223 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo) 224 { 225 ttm_bo_reference(&bo->tbo); 226 return bo; 227 } 228 229 int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr) 230 { 231 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 232 int r; 233 234 if (bo->pin_count) { 235 bo->pin_count++; 236 if (gpu_addr) 237 *gpu_addr = qxl_bo_gpu_offset(bo); 238 return 0; 239 } 240 qxl_ttm_placement_from_domain(bo, domain, true); 241 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 242 if (likely(r == 0)) { 243 bo->pin_count = 1; 244 if (gpu_addr != NULL) 245 *gpu_addr = qxl_bo_gpu_offset(bo); 246 } 247 if (unlikely(r != 0)) 248 dev_err(qdev->dev, "%p pin failed\n", bo); 249 return r; 250 } 251 252 int qxl_bo_unpin(struct qxl_bo *bo) 253 { 254 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 255 int r, i; 256 257 if (!bo->pin_count) { 258 dev_warn(qdev->dev, "%p unpin not necessary\n", bo); 259 return 0; 260 } 261 bo->pin_count--; 262 if (bo->pin_count) 263 return 0; 264 for (i = 0; i < bo->placement.num_placement; i++) 265 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; 266 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 267 if (unlikely(r != 0)) 268 dev_err(qdev->dev, "%p validate failed for unpin\n", bo); 269 return r; 270 } 271 272 void qxl_bo_force_delete(struct qxl_device *qdev) 273 { 274 struct qxl_bo *bo, *n; 275 276 if (list_empty(&qdev->gem.objects)) 277 return; 278 dev_err(qdev->dev, "Userspace still has active objects !\n"); 279 list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) { 280 mutex_lock(&qdev->ddev->struct_mutex); 281 dev_err(qdev->dev, "%p %p %lu %lu force free\n", 282 &bo->gem_base, bo, (unsigned long)bo->gem_base.size, 283 *((unsigned long *)&bo->gem_base.refcount)); 284 mutex_lock(&qdev->gem.mutex); 285 list_del_init(&bo->list); 286 mutex_unlock(&qdev->gem.mutex); 287 /* this should unref the ttm bo */ 288 drm_gem_object_unreference(&bo->gem_base); 289 mutex_unlock(&qdev->ddev->struct_mutex); 290 } 291 } 292 293 int qxl_bo_init(struct qxl_device *qdev) 294 { 295 return qxl_ttm_init(qdev); 296 } 297 298 void qxl_bo_fini(struct qxl_device *qdev) 299 { 300 qxl_ttm_fini(qdev); 301 } 302 303 int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo) 304 { 305 int ret; 306 if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) { 307 /* allocate a surface id for this surface now */ 308 ret = qxl_surface_id_alloc(qdev, bo); 309 if (ret) 310 return ret; 311 312 ret = qxl_hw_surface_alloc(qdev, bo, NULL); 313 if (ret) 314 return ret; 315 } 316 return 0; 317 } 318 319 int qxl_surf_evict(struct qxl_device *qdev) 320 { 321 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV0); 322 } 323 324 int qxl_vram_evict(struct qxl_device *qdev) 325 { 326 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM); 327 } 328