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 41static 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 51static 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 = TTM_PL_MASK_CACHING 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, false); 71 *placement = qbo->placement; 72} 73 74int 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 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 break; 92 default: 93 return -EINVAL; 94 } 95 return 0; 96} 97 98/* 99 * TTM backend functions. 100 */ 101struct qxl_ttm_tt { 102 struct ttm_tt ttm; 103 struct qxl_device *qdev; 104 u64 offset; 105}; 106 107static int qxl_ttm_backend_bind(struct ttm_bo_device *bdev, 108 struct ttm_tt *ttm, 109 struct ttm_resource *bo_mem) 110{ 111 struct qxl_ttm_tt *gtt = (void *)ttm; 112 113 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); 114 if (!ttm->num_pages) { 115 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", 116 ttm->num_pages, bo_mem, ttm); 117 } 118 /* Not implemented */ 119 return -1; 120} 121 122static void qxl_ttm_backend_unbind(struct ttm_bo_device *bdev, 123 struct ttm_tt *ttm) 124{ 125 /* Not implemented */ 126} 127 128static void qxl_ttm_backend_destroy(struct ttm_bo_device *bdev, 129 struct ttm_tt *ttm) 130{ 131 struct qxl_ttm_tt *gtt = (void *)ttm; 132 133 ttm_tt_destroy_common(bdev, ttm); 134 ttm_tt_fini(>t->ttm); 135 kfree(gtt); 136} 137 138static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, 139 uint32_t page_flags) 140{ 141 struct qxl_device *qdev; 142 struct qxl_ttm_tt *gtt; 143 144 qdev = qxl_get_qdev(bo->bdev); 145 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL); 146 if (gtt == NULL) 147 return NULL; 148 gtt->qdev = qdev; 149 if (ttm_tt_init(>t->ttm, bo, page_flags)) { 150 kfree(gtt); 151 return NULL; 152 } 153 return >t->ttm; 154} 155 156static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, 157 struct ttm_operation_ctx *ctx, 158 struct ttm_resource *new_mem) 159{ 160 struct ttm_resource *old_mem = &bo->mem; 161 int ret; 162 163 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu); 164 if (ret) 165 return ret; 166 167 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { 168 ttm_bo_move_null(bo, new_mem); 169 return 0; 170 } 171 return ttm_bo_move_memcpy(bo, ctx, new_mem); 172} 173 174static void qxl_bo_move_notify(struct ttm_buffer_object *bo, 175 bool evict, 176 struct ttm_resource *new_mem) 177{ 178 struct qxl_bo *qbo; 179 struct qxl_device *qdev; 180 181 if (!qxl_ttm_bo_is_qxl_bo(bo)) 182 return; 183 qbo = to_qxl_bo(bo); 184 qdev = to_qxl(qbo->tbo.base.dev); 185 186 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id) 187 qxl_surface_evict(qdev, qbo, new_mem ? true : false); 188} 189 190static struct ttm_bo_driver qxl_bo_driver = { 191 .ttm_tt_create = &qxl_ttm_tt_create, 192 .ttm_tt_bind = &qxl_ttm_backend_bind, 193 .ttm_tt_destroy = &qxl_ttm_backend_destroy, 194 .ttm_tt_unbind = &qxl_ttm_backend_unbind, 195 .eviction_valuable = ttm_bo_eviction_valuable, 196 .evict_flags = &qxl_evict_flags, 197 .move = &qxl_bo_move, 198 .io_mem_reserve = &qxl_ttm_io_mem_reserve, 199 .move_notify = &qxl_bo_move_notify, 200}; 201 202static int qxl_ttm_init_mem_type(struct qxl_device *qdev, 203 unsigned int type, 204 uint64_t size) 205{ 206 return ttm_range_man_init(&qdev->mman.bdev, type, false, size); 207} 208 209int qxl_ttm_init(struct qxl_device *qdev) 210{ 211 int r; 212 int num_io_pages; /* != rom->num_io_pages, we include surface0 */ 213 214 /* No others user of address space so set it to 0 */ 215 r = ttm_bo_device_init(&qdev->mman.bdev, 216 &qxl_bo_driver, 217 qdev->ddev.anon_inode->i_mapping, 218 qdev->ddev.vma_offset_manager, 219 false); 220 if (r) { 221 DRM_ERROR("failed initializing buffer object driver(%d).\n", r); 222 return r; 223 } 224 /* NOTE: this includes the framebuffer (aka surface 0) */ 225 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; 226 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages); 227 if (r) { 228 DRM_ERROR("Failed initializing VRAM heap.\n"); 229 return r; 230 } 231 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV, 232 qdev->surfaceram_size / PAGE_SIZE); 233 if (r) { 234 DRM_ERROR("Failed initializing Surfaces heap.\n"); 235 return r; 236 } 237 DRM_INFO("qxl: %uM of VRAM memory size\n", 238 (unsigned int)qdev->vram_size / (1024 * 1024)); 239 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n", 240 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); 241 DRM_INFO("qxl: %uM of Surface memory size\n", 242 (unsigned int)qdev->surfaceram_size / (1024 * 1024)); 243 return 0; 244} 245 246void qxl_ttm_fini(struct qxl_device *qdev) 247{ 248 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM); 249 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV); 250 ttm_bo_device_release(&qdev->mman.bdev); 251 DRM_INFO("qxl: ttm finalized\n"); 252} 253 254#define QXL_DEBUGFS_MEM_TYPES 2 255 256#if defined(CONFIG_DEBUG_FS) 257static int qxl_mm_dump_table(struct seq_file *m, void *data) 258{ 259 struct drm_info_node *node = (struct drm_info_node *)m->private; 260 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data; 261 struct drm_printer p = drm_seq_file_printer(m); 262 263 ttm_resource_manager_debug(man, &p); 264 return 0; 265} 266#endif 267 268void qxl_ttm_debugfs_init(struct qxl_device *qdev) 269{ 270#if defined(CONFIG_DEBUG_FS) 271 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES]; 272 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32]; 273 unsigned int i; 274 275 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) { 276 if (i == 0) 277 sprintf(qxl_mem_types_names[i], "qxl_mem_mm"); 278 else 279 sprintf(qxl_mem_types_names[i], "qxl_surf_mm"); 280 qxl_mem_types_list[i].name = qxl_mem_types_names[i]; 281 qxl_mem_types_list[i].show = &qxl_mm_dump_table; 282 qxl_mem_types_list[i].driver_features = 0; 283 if (i == 0) 284 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM); 285 else 286 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV); 287 288 } 289 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i); 290#endif 291} 292