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->type = domain; 102 bo->pin_count = pinned ? 1 : 0; 103 bo->surface_id = 0; 104 qxl_fence_init(qdev, &bo->fence); 105 INIT_LIST_HEAD(&bo->list); 106 107 if (surf) 108 bo->surf = *surf; 109 110 qxl_ttm_placement_from_domain(bo, domain, pinned); 111 112 r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type, 113 &bo->placement, 0, !kernel, NULL, size, 114 NULL, &qxl_ttm_bo_destroy); 115 if (unlikely(r != 0)) { 116 if (r != -ERESTARTSYS) 117 dev_err(qdev->dev, 118 "object_init failed for (%lu, 0x%08X)\n", 119 size, domain); 120 return r; 121 } 122 *bo_ptr = bo; 123 return 0; 124 } 125 126 int qxl_bo_kmap(struct qxl_bo *bo, void **ptr) 127 { 128 bool is_iomem; 129 int r; 130 131 if (bo->kptr) { 132 if (ptr) 133 *ptr = bo->kptr; 134 return 0; 135 } 136 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 137 if (r) 138 return r; 139 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 140 if (ptr) 141 *ptr = bo->kptr; 142 return 0; 143 } 144 145 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, 146 struct qxl_bo *bo, int page_offset) 147 { 148 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 149 void *rptr; 150 int ret; 151 struct io_mapping *map; 152 153 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 154 map = qdev->vram_mapping; 155 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 156 map = qdev->surface_mapping; 157 else 158 goto fallback; 159 160 (void) ttm_mem_io_lock(man, false); 161 ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem); 162 ttm_mem_io_unlock(man); 163 164 return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset); 165 fallback: 166 if (bo->kptr) { 167 rptr = bo->kptr + (page_offset * PAGE_SIZE); 168 return rptr; 169 } 170 171 ret = qxl_bo_kmap(bo, &rptr); 172 if (ret) 173 return NULL; 174 175 rptr += page_offset * PAGE_SIZE; 176 return rptr; 177 } 178 179 void qxl_bo_kunmap(struct qxl_bo *bo) 180 { 181 if (bo->kptr == NULL) 182 return; 183 bo->kptr = NULL; 184 ttm_bo_kunmap(&bo->kmap); 185 } 186 187 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, 188 struct qxl_bo *bo, void *pmap) 189 { 190 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 191 struct io_mapping *map; 192 193 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 194 map = qdev->vram_mapping; 195 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 196 map = qdev->surface_mapping; 197 else 198 goto fallback; 199 200 io_mapping_unmap_atomic(pmap); 201 202 (void) ttm_mem_io_lock(man, false); 203 ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem); 204 ttm_mem_io_unlock(man); 205 return ; 206 fallback: 207 qxl_bo_kunmap(bo); 208 } 209 210 void qxl_bo_unref(struct qxl_bo **bo) 211 { 212 struct ttm_buffer_object *tbo; 213 214 if ((*bo) == NULL) 215 return; 216 tbo = &((*bo)->tbo); 217 ttm_bo_unref(&tbo); 218 if (tbo == NULL) 219 *bo = NULL; 220 } 221 222 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo) 223 { 224 ttm_bo_reference(&bo->tbo); 225 return bo; 226 } 227 228 int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr) 229 { 230 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 231 int r; 232 233 if (bo->pin_count) { 234 bo->pin_count++; 235 if (gpu_addr) 236 *gpu_addr = qxl_bo_gpu_offset(bo); 237 return 0; 238 } 239 qxl_ttm_placement_from_domain(bo, domain, true); 240 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 241 if (likely(r == 0)) { 242 bo->pin_count = 1; 243 if (gpu_addr != NULL) 244 *gpu_addr = qxl_bo_gpu_offset(bo); 245 } 246 if (unlikely(r != 0)) 247 dev_err(qdev->dev, "%p pin failed\n", bo); 248 return r; 249 } 250 251 int qxl_bo_unpin(struct qxl_bo *bo) 252 { 253 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 254 int r, i; 255 256 if (!bo->pin_count) { 257 dev_warn(qdev->dev, "%p unpin not necessary\n", bo); 258 return 0; 259 } 260 bo->pin_count--; 261 if (bo->pin_count) 262 return 0; 263 for (i = 0; i < bo->placement.num_placement; i++) 264 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; 265 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 266 if (unlikely(r != 0)) 267 dev_err(qdev->dev, "%p validate failed for unpin\n", bo); 268 return r; 269 } 270 271 void qxl_bo_force_delete(struct qxl_device *qdev) 272 { 273 struct qxl_bo *bo, *n; 274 275 if (list_empty(&qdev->gem.objects)) 276 return; 277 dev_err(qdev->dev, "Userspace still has active objects !\n"); 278 list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) { 279 mutex_lock(&qdev->ddev->struct_mutex); 280 dev_err(qdev->dev, "%p %p %lu %lu force free\n", 281 &bo->gem_base, bo, (unsigned long)bo->gem_base.size, 282 *((unsigned long *)&bo->gem_base.refcount)); 283 mutex_lock(&qdev->gem.mutex); 284 list_del_init(&bo->list); 285 mutex_unlock(&qdev->gem.mutex); 286 /* this should unref the ttm bo */ 287 drm_gem_object_unreference(&bo->gem_base); 288 mutex_unlock(&qdev->ddev->struct_mutex); 289 } 290 } 291 292 int qxl_bo_init(struct qxl_device *qdev) 293 { 294 return qxl_ttm_init(qdev); 295 } 296 297 void qxl_bo_fini(struct qxl_device *qdev) 298 { 299 qxl_ttm_fini(qdev); 300 } 301 302 int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo) 303 { 304 int ret; 305 if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) { 306 /* allocate a surface id for this surface now */ 307 ret = qxl_surface_id_alloc(qdev, bo); 308 if (ret) 309 return ret; 310 311 ret = qxl_hw_surface_alloc(qdev, bo, NULL); 312 if (ret) 313 return ret; 314 } 315 return 0; 316 } 317 318 int qxl_surf_evict(struct qxl_device *qdev) 319 { 320 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV0); 321 } 322 323 int qxl_vram_evict(struct qxl_device *qdev) 324 { 325 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM); 326 } 327