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 void qxl_evict_flags(struct ttm_buffer_object *bo, 52 struct ttm_placement *placement) 53 { 54 struct qxl_bo *qbo; 55 static const struct ttm_place placements = { 56 .fpfn = 0, 57 .lpfn = 0, 58 .mem_type = TTM_PL_SYSTEM, 59 .flags = 0 60 }; 61 62 if (!qxl_ttm_bo_is_qxl_bo(bo)) { 63 placement->placement = &placements; 64 placement->busy_placement = &placements; 65 placement->num_placement = 1; 66 placement->num_busy_placement = 1; 67 return; 68 } 69 qbo = to_qxl_bo(bo); 70 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU); 71 *placement = qbo->placement; 72 } 73 74 int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev, 75 struct ttm_resource *mem) 76 { 77 struct qxl_device *qdev = qxl_get_qdev(bdev); 78 79 switch (mem->mem_type) { 80 case TTM_PL_SYSTEM: 81 /* system memory */ 82 return 0; 83 case TTM_PL_VRAM: 84 mem->bus.is_iomem = true; 85 mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base; 86 mem->bus.caching = ttm_cached; 87 break; 88 case TTM_PL_PRIV: 89 mem->bus.is_iomem = true; 90 mem->bus.offset = (mem->start << PAGE_SHIFT) + 91 qdev->surfaceram_base; 92 mem->bus.caching = ttm_cached; 93 break; 94 default: 95 return -EINVAL; 96 } 97 return 0; 98 } 99 100 /* 101 * TTM backend functions. 102 */ 103 104 static int qxl_ttm_backend_bind(struct ttm_bo_device *bdev, 105 struct ttm_tt *ttm, 106 struct ttm_resource *bo_mem) 107 { 108 if (!ttm->num_pages) { 109 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", 110 ttm->num_pages, bo_mem, ttm); 111 } 112 /* Not implemented */ 113 return -1; 114 } 115 116 static void qxl_ttm_backend_unbind(struct ttm_bo_device *bdev, 117 struct ttm_tt *ttm) 118 { 119 /* Not implemented */ 120 } 121 122 static void qxl_ttm_backend_destroy(struct ttm_bo_device *bdev, 123 struct ttm_tt *ttm) 124 { 125 ttm_tt_destroy_common(bdev, ttm); 126 ttm_tt_fini(ttm); 127 kfree(ttm); 128 } 129 130 static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, 131 uint32_t page_flags) 132 { 133 struct ttm_tt *ttm; 134 135 ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); 136 if (ttm == NULL) 137 return NULL; 138 if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { 139 kfree(ttm); 140 return NULL; 141 } 142 return ttm; 143 } 144 145 static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, 146 struct ttm_operation_ctx *ctx, 147 struct ttm_resource *new_mem) 148 { 149 struct ttm_resource *old_mem = &bo->mem; 150 int ret; 151 152 ret = ttm_bo_wait_ctx(bo, ctx); 153 if (ret) 154 return ret; 155 156 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 157 ttm_bo_move_null(bo, new_mem); 158 return 0; 159 } 160 return ttm_bo_move_memcpy(bo, ctx, new_mem); 161 } 162 163 static void qxl_bo_move_notify(struct ttm_buffer_object *bo, 164 bool evict, 165 struct ttm_resource *new_mem) 166 { 167 struct qxl_bo *qbo; 168 struct qxl_device *qdev; 169 170 if (!qxl_ttm_bo_is_qxl_bo(bo)) 171 return; 172 qbo = to_qxl_bo(bo); 173 qdev = to_qxl(qbo->tbo.base.dev); 174 175 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id) 176 qxl_surface_evict(qdev, qbo, new_mem ? true : false); 177 } 178 179 static struct ttm_bo_driver qxl_bo_driver = { 180 .ttm_tt_create = &qxl_ttm_tt_create, 181 .ttm_tt_bind = &qxl_ttm_backend_bind, 182 .ttm_tt_destroy = &qxl_ttm_backend_destroy, 183 .ttm_tt_unbind = &qxl_ttm_backend_unbind, 184 .eviction_valuable = ttm_bo_eviction_valuable, 185 .evict_flags = &qxl_evict_flags, 186 .move = &qxl_bo_move, 187 .io_mem_reserve = &qxl_ttm_io_mem_reserve, 188 .move_notify = &qxl_bo_move_notify, 189 }; 190 191 static int qxl_ttm_init_mem_type(struct qxl_device *qdev, 192 unsigned int type, 193 uint64_t size) 194 { 195 return ttm_range_man_init(&qdev->mman.bdev, type, false, size); 196 } 197 198 int qxl_ttm_init(struct qxl_device *qdev) 199 { 200 int r; 201 int num_io_pages; /* != rom->num_io_pages, we include surface0 */ 202 203 /* No others user of address space so set it to 0 */ 204 r = ttm_bo_device_init(&qdev->mman.bdev, 205 &qxl_bo_driver, 206 qdev->ddev.anon_inode->i_mapping, 207 qdev->ddev.vma_offset_manager, 208 false); 209 if (r) { 210 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 211 return r; 212 } 213 /* NOTE: this includes the framebuffer (aka surface 0) */ 214 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; 215 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages); 216 if (r) { 217 DRM_ERROR("Failed initializing VRAM heap.\n"); 218 return r; 219 } 220 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV, 221 qdev->surfaceram_size / PAGE_SIZE); 222 if (r) { 223 DRM_ERROR("Failed initializing Surfaces heap.\n"); 224 return r; 225 } 226 DRM_INFO("qxl: %uM of VRAM memory size\n", 227 (unsigned int)qdev->vram_size / (1024 * 1024)); 228 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", 229 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); 230 DRM_INFO("qxl: %uM of Surface memory size\n", 231 (unsigned int)qdev->surfaceram_size / (1024 * 1024)); 232 return 0; 233 } 234 235 void qxl_ttm_fini(struct qxl_device *qdev) 236 { 237 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM); 238 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV); 239 ttm_bo_device_release(&qdev->mman.bdev); 240 DRM_INFO("qxl: ttm finalized\n"); 241 } 242 243 #define QXL_DEBUGFS_MEM_TYPES 2 244 245 #if defined(CONFIG_DEBUG_FS) 246 static int qxl_mm_dump_table(struct seq_file *m, void *data) 247 { 248 struct drm_info_node *node = (struct drm_info_node *)m->private; 249 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data; 250 struct drm_printer p = drm_seq_file_printer(m); 251 252 ttm_resource_manager_debug(man, &p); 253 return 0; 254 } 255 #endif 256 257 void qxl_ttm_debugfs_init(struct qxl_device *qdev) 258 { 259 #if defined(CONFIG_DEBUG_FS) 260 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; 261 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32]; 262 unsigned int i; 263 264 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) { 265 if (i == 0) 266 sprintf(qxl_mem_types_names[i], "qxl_mem_mm"); 267 else 268 sprintf(qxl_mem_types_names[i], "qxl_surf_mm"); 269 qxl_mem_types_list[i].name = qxl_mem_types_names[i]; 270 qxl_mem_types_list[i].show = &qxl_mm_dump_table; 271 qxl_mem_types_list[i].driver_features = 0; 272 if (i == 0) 273 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM); 274 else 275 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV); 276 277 } 278 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); 279 #endif 280 } 281