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