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