245 lines · c
1/*2 * Copyright 2013 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Dave Airlie23 * Alon Levy24 */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.h>33#include <drm/ttm/ttm_placement.h>34#include <drm/ttm/ttm_range_manager.h>35#include <drm/ttm/ttm_tt.h>36 37#include "qxl_drv.h"38#include "qxl_object.h"39 40static 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 50static 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 = 059 };60 61 if (!qxl_ttm_bo_is_qxl_bo(bo)) {62 placement->placement = &placements;63 placement->num_placement = 1;64 return;65 }66 qbo = to_qxl_bo(bo);67 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);68 *placement = qbo->placement;69}70 71int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,72 struct ttm_resource *mem)73{74 struct qxl_device *qdev = qxl_get_qdev(bdev);75 76 switch (mem->mem_type) {77 case TTM_PL_SYSTEM:78 /* system memory */79 return 0;80 case TTM_PL_VRAM:81 mem->bus.is_iomem = true;82 mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;83 mem->bus.caching = ttm_write_combined;84 break;85 case TTM_PL_PRIV:86 mem->bus.is_iomem = true;87 mem->bus.offset = (mem->start << PAGE_SHIFT) +88 qdev->surfaceram_base;89 mem->bus.caching = ttm_write_combined;90 break;91 default:92 return -EINVAL;93 }94 return 0;95}96 97/*98 * TTM backend functions.99 */100static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)101{102 ttm_tt_fini(ttm);103 kfree(ttm);104}105 106static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,107 uint32_t page_flags)108{109 struct ttm_tt *ttm;110 111 ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);112 if (ttm == NULL)113 return NULL;114 if (ttm_tt_init(ttm, bo, page_flags, ttm_cached, 0)) {115 kfree(ttm);116 return NULL;117 }118 return ttm;119}120 121static void qxl_bo_move_notify(struct ttm_buffer_object *bo,122 struct ttm_resource *new_mem)123{124 struct qxl_bo *qbo;125 struct qxl_device *qdev;126 127 if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource)128 return;129 qbo = to_qxl_bo(bo);130 qdev = to_qxl(qbo->tbo.base.dev);131 132 if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id)133 qxl_surface_evict(qdev, qbo, new_mem ? true : false);134}135 136static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,137 struct ttm_operation_ctx *ctx,138 struct ttm_resource *new_mem,139 struct ttm_place *hop)140{141 struct ttm_resource *old_mem = bo->resource;142 int ret;143 144 if (!old_mem) {145 if (new_mem->mem_type != TTM_PL_SYSTEM) {146 hop->mem_type = TTM_PL_SYSTEM;147 hop->flags = TTM_PL_FLAG_TEMPORARY;148 return -EMULTIHOP;149 }150 151 ttm_bo_move_null(bo, new_mem);152 return 0;153 }154 155 qxl_bo_move_notify(bo, new_mem);156 157 ret = ttm_bo_wait_ctx(bo, ctx);158 if (ret)159 return ret;160 161 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {162 ttm_bo_move_null(bo, new_mem);163 return 0;164 }165 return ttm_bo_move_memcpy(bo, ctx, new_mem);166}167 168static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)169{170 qxl_bo_move_notify(bo, NULL);171}172 173static struct ttm_device_funcs 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 183static 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 190int 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_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 226void 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_device_fini(&qdev->mman.bdev);231 DRM_INFO("qxl: ttm finalized\n");232}233 234void qxl_ttm_debugfs_init(struct qxl_device *qdev)235{236#if defined(CONFIG_DEBUG_FS)237 ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,238 TTM_PL_VRAM),239 qdev->ddev.primary->debugfs_root, "qxl_mem_mm");240 ttm_resource_manager_create_debugfs(ttm_manager_type(&qdev->mman.bdev,241 TTM_PL_PRIV),242 qdev->ddev.primary->debugfs_root, "qxl_surf_mm");243#endif244}245