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_placement.h> 35 36 #include "qxl_drv.h" 37 #include "qxl_object.h" 38 39 static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev) 40 { 41 struct qxl_mman *mman; 42 struct qxl_device *qdev; 43 44 mman = container_of(bdev, struct qxl_mman, bdev); 45 qdev = container_of(mman, struct qxl_device, mman); 46 return qdev; 47 } 48 49 static void qxl_evict_flags(struct ttm_buffer_object *bo, 50 struct ttm_placement *placement) 51 { 52 struct qxl_bo *qbo; 53 static const struct ttm_place placements = { 54 .fpfn = 0, 55 .lpfn = 0, 56 .mem_type = TTM_PL_SYSTEM, 57 .flags = 0 58 }; 59 60 if (!qxl_ttm_bo_is_qxl_bo(bo)) { 61 placement->placement = &placements; 62 placement->busy_placement = &placements; 63 placement->num_placement = 1; 64 placement->num_busy_placement = 1; 65 return; 66 } 67 qbo = to_qxl_bo(bo); 68 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU); 69 *placement = qbo->placement; 70 } 71 72 int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev, 73 struct ttm_resource *mem) 74 { 75 struct qxl_device *qdev = qxl_get_qdev(bdev); 76 77 switch (mem->mem_type) { 78 case TTM_PL_SYSTEM: 79 /* system memory */ 80 return 0; 81 case TTM_PL_VRAM: 82 mem->bus.is_iomem = true; 83 mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base; 84 mem->bus.caching = ttm_cached; 85 break; 86 case TTM_PL_PRIV: 87 mem->bus.is_iomem = true; 88 mem->bus.offset = (mem->start << PAGE_SHIFT) + 89 qdev->surfaceram_base; 90 mem->bus.caching = ttm_cached; 91 break; 92 default: 93 return -EINVAL; 94 } 95 return 0; 96 } 97 98 /* 99 * TTM backend functions. 100 */ 101 static void qxl_ttm_backend_destroy(struct ttm_bo_device *bdev, 102 struct ttm_tt *ttm) 103 { 104 ttm_tt_destroy_common(bdev, ttm); 105 ttm_tt_fini(ttm); 106 kfree(ttm); 107 } 108 109 static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, 110 uint32_t page_flags) 111 { 112 struct ttm_tt *ttm; 113 114 ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); 115 if (ttm == NULL) 116 return NULL; 117 if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) { 118 kfree(ttm); 119 return NULL; 120 } 121 return ttm; 122 } 123 124 static void qxl_bo_move_notify(struct ttm_buffer_object *bo, 125 bool evict, 126 struct ttm_resource *new_mem) 127 { 128 struct qxl_bo *qbo; 129 struct qxl_device *qdev; 130 131 if (!qxl_ttm_bo_is_qxl_bo(bo)) 132 return; 133 qbo = to_qxl_bo(bo); 134 qdev = to_qxl(qbo->tbo.base.dev); 135 136 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id) 137 qxl_surface_evict(qdev, qbo, new_mem ? true : false); 138 } 139 140 static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, 141 struct ttm_operation_ctx *ctx, 142 struct ttm_resource *new_mem, 143 struct ttm_place *hop) 144 { 145 struct ttm_resource *old_mem = &bo->mem; 146 int ret; 147 148 qxl_bo_move_notify(bo, evict, new_mem); 149 150 ret = ttm_bo_wait_ctx(bo, ctx); 151 if (ret) 152 goto out; 153 154 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 155 ttm_bo_move_null(bo, new_mem); 156 return 0; 157 } 158 ret = ttm_bo_move_memcpy(bo, ctx, new_mem); 159 out: 160 if (ret) { 161 swap(*new_mem, bo->mem); 162 qxl_bo_move_notify(bo, false, new_mem); 163 swap(*new_mem, bo->mem); 164 } 165 return ret; 166 } 167 168 static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo) 169 { 170 qxl_bo_move_notify(bo, false, NULL); 171 } 172 173 static struct ttm_bo_driver qxl_bo_driver = { 174 .ttm_tt_create = &qxl_ttm_tt_create, 175 .ttm_tt_destroy = &qxl_ttm_backend_destroy, 176 .eviction_valuable = ttm_bo_eviction_valuable, 177 .evict_flags = &qxl_evict_flags, 178 .move = &qxl_bo_move, 179 .io_mem_reserve = &qxl_ttm_io_mem_reserve, 180 .delete_mem_notify = &qxl_bo_delete_mem_notify, 181 }; 182 183 static int qxl_ttm_init_mem_type(struct qxl_device *qdev, 184 unsigned int type, 185 uint64_t size) 186 { 187 return ttm_range_man_init(&qdev->mman.bdev, type, false, size); 188 } 189 190 int qxl_ttm_init(struct qxl_device *qdev) 191 { 192 int r; 193 int num_io_pages; /* != rom->num_io_pages, we include surface0 */ 194 195 /* No others user of address space so set it to 0 */ 196 r = ttm_bo_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL, 197 qdev->ddev.anon_inode->i_mapping, 198 qdev->ddev.vma_offset_manager, 199 false, false); 200 if (r) { 201 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 202 return r; 203 } 204 /* NOTE: this includes the framebuffer (aka surface 0) */ 205 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; 206 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages); 207 if (r) { 208 DRM_ERROR("Failed initializing VRAM heap.\n"); 209 return r; 210 } 211 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV, 212 qdev->surfaceram_size / PAGE_SIZE); 213 if (r) { 214 DRM_ERROR("Failed initializing Surfaces heap.\n"); 215 return r; 216 } 217 DRM_INFO("qxl: %uM of VRAM memory size\n", 218 (unsigned int)qdev->vram_size / (1024 * 1024)); 219 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", 220 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); 221 DRM_INFO("qxl: %uM of Surface memory size\n", 222 (unsigned int)qdev->surfaceram_size / (1024 * 1024)); 223 return 0; 224 } 225 226 void qxl_ttm_fini(struct qxl_device *qdev) 227 { 228 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM); 229 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV); 230 ttm_bo_device_release(&qdev->mman.bdev); 231 DRM_INFO("qxl: ttm finalized\n"); 232 } 233 234 #define QXL_DEBUGFS_MEM_TYPES 2 235 236 #if defined(CONFIG_DEBUG_FS) 237 static int qxl_mm_dump_table(struct seq_file *m, void *data) 238 { 239 struct drm_info_node *node = (struct drm_info_node *)m->private; 240 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data; 241 struct drm_printer p = drm_seq_file_printer(m); 242 243 ttm_resource_manager_debug(man, &p); 244 return 0; 245 } 246 #endif 247 248 void qxl_ttm_debugfs_init(struct qxl_device *qdev) 249 { 250 #if defined(CONFIG_DEBUG_FS) 251 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; 252 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32]; 253 unsigned int i; 254 255 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) { 256 if (i == 0) 257 sprintf(qxl_mem_types_names[i], "qxl_mem_mm"); 258 else 259 sprintf(qxl_mem_types_names[i], "qxl_surf_mm"); 260 qxl_mem_types_list[i].name = qxl_mem_types_names[i]; 261 qxl_mem_types_list[i].show = &qxl_mm_dump_table; 262 qxl_mem_types_list[i].driver_features = 0; 263 if (i == 0) 264 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM); 265 else 266 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV); 267 268 } 269 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); 270 #endif 271 } 272