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 <linux/delay.h> 27 28 #include <drm/drm.h> 29 #include <drm/drm_file.h> 30 #include <drm/drm_debugfs.h> 31 #include <drm/qxl_drm.h> 32 #include <drm/ttm/ttm_bo_api.h> 33 #include <drm/ttm/ttm_bo_driver.h> 34 #include <drm/ttm/ttm_module.h> 35 #include <drm/ttm/ttm_page_alloc.h> 36 #include <drm/ttm/ttm_placement.h> 37 38 #include "qxl_drv.h" 39 #include "qxl_object.h" 40 41 static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev) 42 { 43 struct qxl_mman *mman; 44 struct qxl_device *qdev; 45 46 mman = container_of(bdev, struct qxl_mman, bdev); 47 qdev = container_of(mman, struct qxl_device, mman); 48 return qdev; 49 } 50 51 static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) 52 { 53 return 0; 54 } 55 56 static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, 57 struct ttm_mem_type_manager *man) 58 { 59 struct qxl_device *qdev = qxl_get_qdev(bdev); 60 unsigned int gpu_offset_shift = 61 64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits + 8); 62 struct qxl_memslot *slot; 63 64 switch (type) { 65 case TTM_PL_SYSTEM: 66 /* System memory */ 67 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; 68 man->available_caching = TTM_PL_MASK_CACHING; 69 man->default_caching = TTM_PL_FLAG_CACHED; 70 break; 71 case TTM_PL_VRAM: 72 case TTM_PL_PRIV: 73 /* "On-card" video ram */ 74 slot = (type == TTM_PL_VRAM) ? 75 &qdev->main_slot : &qdev->surfaces_slot; 76 slot->gpu_offset = (uint64_t)type << gpu_offset_shift; 77 man->func = &ttm_bo_manager_func; 78 man->gpu_offset = slot->gpu_offset; 79 man->flags = TTM_MEMTYPE_FLAG_FIXED | 80 TTM_MEMTYPE_FLAG_MAPPABLE; 81 man->available_caching = TTM_PL_MASK_CACHING; 82 man->default_caching = TTM_PL_FLAG_CACHED; 83 break; 84 default: 85 DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type); 86 return -EINVAL; 87 } 88 return 0; 89 } 90 91 static void qxl_evict_flags(struct ttm_buffer_object *bo, 92 struct ttm_placement *placement) 93 { 94 struct qxl_bo *qbo; 95 static const struct ttm_place placements = { 96 .fpfn = 0, 97 .lpfn = 0, 98 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM 99 }; 100 101 if (!qxl_ttm_bo_is_qxl_bo(bo)) { 102 placement->placement = &placements; 103 placement->busy_placement = &placements; 104 placement->num_placement = 1; 105 placement->num_busy_placement = 1; 106 return; 107 } 108 qbo = to_qxl_bo(bo); 109 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false); 110 *placement = qbo->placement; 111 } 112 113 int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev, 114 struct ttm_mem_reg *mem) 115 { 116 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; 117 struct qxl_device *qdev = qxl_get_qdev(bdev); 118 119 mem->bus.addr = NULL; 120 mem->bus.offset = 0; 121 mem->bus.size = mem->num_pages << PAGE_SHIFT; 122 mem->bus.base = 0; 123 mem->bus.is_iomem = false; 124 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) 125 return -EINVAL; 126 switch (mem->mem_type) { 127 case TTM_PL_SYSTEM: 128 /* system memory */ 129 return 0; 130 case TTM_PL_VRAM: 131 mem->bus.is_iomem = true; 132 mem->bus.base = qdev->vram_base; 133 mem->bus.offset = mem->start << PAGE_SHIFT; 134 break; 135 case TTM_PL_PRIV: 136 mem->bus.is_iomem = true; 137 mem->bus.base = qdev->surfaceram_base; 138 mem->bus.offset = mem->start << PAGE_SHIFT; 139 break; 140 default: 141 return -EINVAL; 142 } 143 return 0; 144 } 145 146 static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev, 147 struct ttm_mem_reg *mem) 148 { 149 } 150 151 /* 152 * TTM backend functions. 153 */ 154 struct qxl_ttm_tt { 155 struct ttm_tt ttm; 156 struct qxl_device *qdev; 157 u64 offset; 158 }; 159 160 static int qxl_ttm_backend_bind(struct ttm_tt *ttm, 161 struct ttm_mem_reg *bo_mem) 162 { 163 struct qxl_ttm_tt *gtt = (void *)ttm; 164 165 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); 166 if (!ttm->num_pages) { 167 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", 168 ttm->num_pages, bo_mem, ttm); 169 } 170 /* Not implemented */ 171 return -1; 172 } 173 174 static int qxl_ttm_backend_unbind(struct ttm_tt *ttm) 175 { 176 /* Not implemented */ 177 return -1; 178 } 179 180 static void qxl_ttm_backend_destroy(struct ttm_tt *ttm) 181 { 182 struct qxl_ttm_tt *gtt = (void *)ttm; 183 184 ttm_tt_fini(>t->ttm); 185 kfree(gtt); 186 } 187 188 static struct ttm_backend_func qxl_backend_func = { 189 .bind = &qxl_ttm_backend_bind, 190 .unbind = &qxl_ttm_backend_unbind, 191 .destroy = &qxl_ttm_backend_destroy, 192 }; 193 194 static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, 195 uint32_t page_flags) 196 { 197 struct qxl_device *qdev; 198 struct qxl_ttm_tt *gtt; 199 200 qdev = qxl_get_qdev(bo->bdev); 201 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL); 202 if (gtt == NULL) 203 return NULL; 204 gtt->ttm.func = &qxl_backend_func; 205 gtt->qdev = qdev; 206 if (ttm_tt_init(>t->ttm, bo, page_flags)) { 207 kfree(gtt); 208 return NULL; 209 } 210 return >t->ttm; 211 } 212 213 static void qxl_move_null(struct ttm_buffer_object *bo, 214 struct ttm_mem_reg *new_mem) 215 { 216 struct ttm_mem_reg *old_mem = &bo->mem; 217 218 BUG_ON(old_mem->mm_node != NULL); 219 *old_mem = *new_mem; 220 new_mem->mm_node = NULL; 221 } 222 223 static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, 224 struct ttm_operation_ctx *ctx, 225 struct ttm_mem_reg *new_mem) 226 { 227 struct ttm_mem_reg *old_mem = &bo->mem; 228 int ret; 229 230 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu); 231 if (ret) 232 return ret; 233 234 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 235 qxl_move_null(bo, new_mem); 236 return 0; 237 } 238 return ttm_bo_move_memcpy(bo, ctx, new_mem); 239 } 240 241 static void qxl_bo_move_notify(struct ttm_buffer_object *bo, 242 bool evict, 243 struct ttm_mem_reg *new_mem) 244 { 245 struct qxl_bo *qbo; 246 struct qxl_device *qdev; 247 248 if (!qxl_ttm_bo_is_qxl_bo(bo)) 249 return; 250 qbo = to_qxl_bo(bo); 251 qdev = qbo->tbo.base.dev->dev_private; 252 253 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id) 254 qxl_surface_evict(qdev, qbo, new_mem ? true : false); 255 } 256 257 static struct ttm_bo_driver qxl_bo_driver = { 258 .ttm_tt_create = &qxl_ttm_tt_create, 259 .invalidate_caches = &qxl_invalidate_caches, 260 .init_mem_type = &qxl_init_mem_type, 261 .eviction_valuable = ttm_bo_eviction_valuable, 262 .evict_flags = &qxl_evict_flags, 263 .move = &qxl_bo_move, 264 .io_mem_reserve = &qxl_ttm_io_mem_reserve, 265 .io_mem_free = &qxl_ttm_io_mem_free, 266 .move_notify = &qxl_bo_move_notify, 267 }; 268 269 int qxl_ttm_init(struct qxl_device *qdev) 270 { 271 int r; 272 int num_io_pages; /* != rom->num_io_pages, we include surface0 */ 273 274 /* No others user of address space so set it to 0 */ 275 r = ttm_bo_device_init(&qdev->mman.bdev, 276 &qxl_bo_driver, 277 qdev->ddev.anon_inode->i_mapping, 278 qdev->ddev.vma_offset_manager, 279 false); 280 if (r) { 281 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 282 return r; 283 } 284 /* NOTE: this includes the framebuffer (aka surface 0) */ 285 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; 286 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM, 287 num_io_pages); 288 if (r) { 289 DRM_ERROR("Failed initializing VRAM heap.\n"); 290 return r; 291 } 292 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV, 293 qdev->surfaceram_size / PAGE_SIZE); 294 if (r) { 295 DRM_ERROR("Failed initializing Surfaces heap.\n"); 296 return r; 297 } 298 DRM_INFO("qxl: %uM of VRAM memory size\n", 299 (unsigned int)qdev->vram_size / (1024 * 1024)); 300 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", 301 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); 302 DRM_INFO("qxl: %uM of Surface memory size\n", 303 (unsigned int)qdev->surfaceram_size / (1024 * 1024)); 304 return 0; 305 } 306 307 void qxl_ttm_fini(struct qxl_device *qdev) 308 { 309 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM); 310 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV); 311 ttm_bo_device_release(&qdev->mman.bdev); 312 DRM_INFO("qxl: ttm finalized\n"); 313 } 314 315 #define QXL_DEBUGFS_MEM_TYPES 2 316 317 #if defined(CONFIG_DEBUG_FS) 318 static int qxl_mm_dump_table(struct seq_file *m, void *data) 319 { 320 struct drm_info_node *node = (struct drm_info_node *)m->private; 321 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data; 322 struct drm_printer p = drm_seq_file_printer(m); 323 324 spin_lock(&ttm_bo_glob.lru_lock); 325 drm_mm_print(mm, &p); 326 spin_unlock(&ttm_bo_glob.lru_lock); 327 return 0; 328 } 329 #endif 330 331 int qxl_ttm_debugfs_init(struct qxl_device *qdev) 332 { 333 #if defined(CONFIG_DEBUG_FS) 334 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; 335 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32]; 336 unsigned int i; 337 338 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) { 339 if (i == 0) 340 sprintf(qxl_mem_types_names[i], "qxl_mem_mm"); 341 else 342 sprintf(qxl_mem_types_names[i], "qxl_surf_mm"); 343 qxl_mem_types_list[i].name = qxl_mem_types_names[i]; 344 qxl_mem_types_list[i].show = &qxl_mm_dump_table; 345 qxl_mem_types_list[i].driver_features = 0; 346 if (i == 0) 347 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv; 348 else 349 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv; 350 351 } 352 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); 353 #else 354 return 0; 355 #endif 356 } 357