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 (kernel) 86 type = ttm_bo_type_kernel; 87 else 88 type = ttm_bo_type_device; 89 *bo_ptr = NULL; 90 bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL); 91 if (bo == NULL) 92 return -ENOMEM; 93 size = roundup(size, PAGE_SIZE); 94 r = drm_gem_object_init(qdev->ddev, &bo->gem_base, size); 95 if (unlikely(r)) { 96 kfree(bo); 97 return r; 98 } 99 bo->type = domain; 100 bo->pin_count = pinned ? 1 : 0; 101 bo->surface_id = 0; 102 qxl_fence_init(qdev, &bo->fence); 103 INIT_LIST_HEAD(&bo->list); 104 105 if (surf) 106 bo->surf = *surf; 107 108 qxl_ttm_placement_from_domain(bo, domain, pinned); 109 110 r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type, 111 &bo->placement, 0, !kernel, NULL, size, 112 NULL, &qxl_ttm_bo_destroy); 113 if (unlikely(r != 0)) { 114 if (r != -ERESTARTSYS) 115 dev_err(qdev->dev, 116 "object_init failed for (%lu, 0x%08X)\n", 117 size, domain); 118 return r; 119 } 120 *bo_ptr = bo; 121 return 0; 122 } 123 124 int qxl_bo_kmap(struct qxl_bo *bo, void **ptr) 125 { 126 bool is_iomem; 127 int r; 128 129 if (bo->kptr) { 130 if (ptr) 131 *ptr = bo->kptr; 132 return 0; 133 } 134 r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); 135 if (r) 136 return r; 137 bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); 138 if (ptr) 139 *ptr = bo->kptr; 140 return 0; 141 } 142 143 void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, 144 struct qxl_bo *bo, int page_offset) 145 { 146 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 147 void *rptr; 148 int ret; 149 struct io_mapping *map; 150 151 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 152 map = qdev->vram_mapping; 153 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 154 map = qdev->surface_mapping; 155 else 156 goto fallback; 157 158 (void) ttm_mem_io_lock(man, false); 159 ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem); 160 ttm_mem_io_unlock(man); 161 162 return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset); 163 fallback: 164 if (bo->kptr) { 165 rptr = bo->kptr + (page_offset * PAGE_SIZE); 166 return rptr; 167 } 168 169 ret = qxl_bo_kmap(bo, &rptr); 170 if (ret) 171 return NULL; 172 173 rptr += page_offset * PAGE_SIZE; 174 return rptr; 175 } 176 177 void qxl_bo_kunmap(struct qxl_bo *bo) 178 { 179 if (bo->kptr == NULL) 180 return; 181 bo->kptr = NULL; 182 ttm_bo_kunmap(&bo->kmap); 183 } 184 185 void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, 186 struct qxl_bo *bo, void *pmap) 187 { 188 struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type]; 189 struct io_mapping *map; 190 191 if (bo->tbo.mem.mem_type == TTM_PL_VRAM) 192 map = qdev->vram_mapping; 193 else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0) 194 map = qdev->surface_mapping; 195 else 196 goto fallback; 197 198 io_mapping_unmap_atomic(pmap); 199 200 (void) ttm_mem_io_lock(man, false); 201 ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem); 202 ttm_mem_io_unlock(man); 203 return ; 204 fallback: 205 qxl_bo_kunmap(bo); 206 } 207 208 void qxl_bo_unref(struct qxl_bo **bo) 209 { 210 struct ttm_buffer_object *tbo; 211 212 if ((*bo) == NULL) 213 return; 214 tbo = &((*bo)->tbo); 215 ttm_bo_unref(&tbo); 216 if (tbo == NULL) 217 *bo = NULL; 218 } 219 220 struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo) 221 { 222 ttm_bo_reference(&bo->tbo); 223 return bo; 224 } 225 226 int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr) 227 { 228 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 229 int r; 230 231 if (bo->pin_count) { 232 bo->pin_count++; 233 if (gpu_addr) 234 *gpu_addr = qxl_bo_gpu_offset(bo); 235 return 0; 236 } 237 qxl_ttm_placement_from_domain(bo, domain, true); 238 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 239 if (likely(r == 0)) { 240 bo->pin_count = 1; 241 if (gpu_addr != NULL) 242 *gpu_addr = qxl_bo_gpu_offset(bo); 243 } 244 if (unlikely(r != 0)) 245 dev_err(qdev->dev, "%p pin failed\n", bo); 246 return r; 247 } 248 249 int qxl_bo_unpin(struct qxl_bo *bo) 250 { 251 struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private; 252 int r, i; 253 254 if (!bo->pin_count) { 255 dev_warn(qdev->dev, "%p unpin not necessary\n", bo); 256 return 0; 257 } 258 bo->pin_count--; 259 if (bo->pin_count) 260 return 0; 261 for (i = 0; i < bo->placement.num_placement; i++) 262 bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT; 263 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false); 264 if (unlikely(r != 0)) 265 dev_err(qdev->dev, "%p validate failed for unpin\n", bo); 266 return r; 267 } 268 269 void qxl_bo_force_delete(struct qxl_device *qdev) 270 { 271 struct qxl_bo *bo, *n; 272 273 if (list_empty(&qdev->gem.objects)) 274 return; 275 dev_err(qdev->dev, "Userspace still has active objects !\n"); 276 list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) { 277 mutex_lock(&qdev->ddev->struct_mutex); 278 dev_err(qdev->dev, "%p %p %lu %lu force free\n", 279 &bo->gem_base, bo, (unsigned long)bo->gem_base.size, 280 *((unsigned long *)&bo->gem_base.refcount)); 281 mutex_lock(&qdev->gem.mutex); 282 list_del_init(&bo->list); 283 mutex_unlock(&qdev->gem.mutex); 284 /* this should unref the ttm bo */ 285 drm_gem_object_unreference(&bo->gem_base); 286 mutex_unlock(&qdev->ddev->struct_mutex); 287 } 288 } 289 290 int qxl_bo_init(struct qxl_device *qdev) 291 { 292 return qxl_ttm_init(qdev); 293 } 294 295 void qxl_bo_fini(struct qxl_device *qdev) 296 { 297 qxl_ttm_fini(qdev); 298 } 299 300 int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo) 301 { 302 int ret; 303 if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) { 304 /* allocate a surface id for this surface now */ 305 ret = qxl_surface_id_alloc(qdev, bo); 306 if (ret) 307 return ret; 308 309 ret = qxl_hw_surface_alloc(qdev, bo, NULL); 310 if (ret) 311 return ret; 312 } 313 return 0; 314 } 315 316 int qxl_surf_evict(struct qxl_device *qdev) 317 { 318 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV0); 319 } 320 321 int qxl_vram_evict(struct qxl_device *qdev) 322 { 323 return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM); 324 } 325