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_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_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_device *bdev, struct ttm_tt *ttm) 102 { 103 ttm_tt_destroy_common(bdev, ttm); 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 bool evict, 125 struct ttm_resource *new_mem) 126 { 127 struct qxl_bo *qbo; 128 struct qxl_device *qdev; 129 130 if (!qxl_ttm_bo_is_qxl_bo(bo)) 131 return; 132 qbo = to_qxl_bo(bo); 133 qdev = to_qxl(qbo->tbo.base.dev); 134 135 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id) 136 qxl_surface_evict(qdev, qbo, new_mem ? true : false); 137 } 138 139 static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, 140 struct ttm_operation_ctx *ctx, 141 struct ttm_resource *new_mem, 142 struct ttm_place *hop) 143 { 144 struct ttm_resource *old_mem = &bo->mem; 145 int ret; 146 147 qxl_bo_move_notify(bo, evict, new_mem); 148 149 ret = ttm_bo_wait_ctx(bo, ctx); 150 if (ret) 151 goto out; 152 153 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 154 ttm_bo_move_null(bo, new_mem); 155 return 0; 156 } 157 ret = ttm_bo_move_memcpy(bo, ctx, new_mem); 158 out: 159 if (ret) { 160 swap(*new_mem, bo->mem); 161 qxl_bo_move_notify(bo, false, new_mem); 162 swap(*new_mem, bo->mem); 163 } 164 return ret; 165 } 166 167 static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo) 168 { 169 qxl_bo_move_notify(bo, false, NULL); 170 } 171 172 static struct ttm_device_funcs qxl_bo_driver = { 173 .ttm_tt_create = &qxl_ttm_tt_create, 174 .ttm_tt_destroy = &qxl_ttm_backend_destroy, 175 .eviction_valuable = ttm_bo_eviction_valuable, 176 .evict_flags = &qxl_evict_flags, 177 .move = &qxl_bo_move, 178 .io_mem_reserve = &qxl_ttm_io_mem_reserve, 179 .delete_mem_notify = &qxl_bo_delete_mem_notify, 180 }; 181 182 static int qxl_ttm_init_mem_type(struct qxl_device *qdev, 183 unsigned int type, 184 uint64_t size) 185 { 186 return ttm_range_man_init(&qdev->mman.bdev, type, false, size); 187 } 188 189 int qxl_ttm_init(struct qxl_device *qdev) 190 { 191 int r; 192 int num_io_pages; /* != rom->num_io_pages, we include surface0 */ 193 194 /* No others user of address space so set it to 0 */ 195 r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL, 196 qdev->ddev.anon_inode->i_mapping, 197 qdev->ddev.vma_offset_manager, 198 false, false); 199 if (r) { 200 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 201 return r; 202 } 203 /* NOTE: this includes the framebuffer (aka surface 0) */ 204 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; 205 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages); 206 if (r) { 207 DRM_ERROR("Failed initializing VRAM heap.\n"); 208 return r; 209 } 210 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV, 211 qdev->surfaceram_size / PAGE_SIZE); 212 if (r) { 213 DRM_ERROR("Failed initializing Surfaces heap.\n"); 214 return r; 215 } 216 DRM_INFO("qxl: %uM of VRAM memory size\n", 217 (unsigned int)qdev->vram_size / (1024 * 1024)); 218 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", 219 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); 220 DRM_INFO("qxl: %uM of Surface memory size\n", 221 (unsigned int)qdev->surfaceram_size / (1024 * 1024)); 222 return 0; 223 } 224 225 void qxl_ttm_fini(struct qxl_device *qdev) 226 { 227 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM); 228 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV); 229 ttm_device_fini(&qdev->mman.bdev); 230 DRM_INFO("qxl: ttm finalized\n"); 231 } 232 233 #define QXL_DEBUGFS_MEM_TYPES 2 234 235 #if defined(CONFIG_DEBUG_FS) 236 static int qxl_mm_dump_table(struct seq_file *m, void *data) 237 { 238 struct drm_info_node *node = (struct drm_info_node *)m->private; 239 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data; 240 struct drm_printer p = drm_seq_file_printer(m); 241 242 ttm_resource_manager_debug(man, &p); 243 return 0; 244 } 245 #endif 246 247 void qxl_ttm_debugfs_init(struct qxl_device *qdev) 248 { 249 #if defined(CONFIG_DEBUG_FS) 250 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; 251 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32]; 252 unsigned int i; 253 254 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) { 255 if (i == 0) 256 sprintf(qxl_mem_types_names[i], "qxl_mem_mm"); 257 else 258 sprintf(qxl_mem_types_names[i], "qxl_surf_mm"); 259 qxl_mem_types_list[i].name = qxl_mem_types_names[i]; 260 qxl_mem_types_list[i].show = &qxl_mm_dump_table; 261 qxl_mem_types_list[i].driver_features = 0; 262 if (i == 0) 263 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM); 264 else 265 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV); 266 267 } 268 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); 269 #endif 270 } 271