| /* |
| * Copyright 2012 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| */ |
| /* |
| * Authors: Dave Airlie <airlied@redhat.com> |
| */ |
| #include <drm/drmP.h> |
| #include "ast_drv.h" |
| #include <ttm/ttm_page_alloc.h> |
| |
| static inline struct ast_private * |
| ast_bdev(struct ttm_bo_device *bd) |
| { |
| return container_of(bd, struct ast_private, ttm.bdev); |
| } |
| |
| static int |
| ast_ttm_mem_global_init(struct drm_global_reference *ref) |
| { |
| return ttm_mem_global_init(ref->object); |
| } |
| |
| static void |
| ast_ttm_mem_global_release(struct drm_global_reference *ref) |
| { |
| ttm_mem_global_release(ref->object); |
| } |
| |
| static int ast_ttm_global_init(struct ast_private *ast) |
| { |
| struct drm_global_reference *global_ref; |
| int r; |
| |
| global_ref = &ast->ttm.mem_global_ref; |
| global_ref->global_type = DRM_GLOBAL_TTM_MEM; |
| global_ref->size = sizeof(struct ttm_mem_global); |
| global_ref->init = &ast_ttm_mem_global_init; |
| global_ref->release = &ast_ttm_mem_global_release; |
| r = drm_global_item_ref(global_ref); |
| if (r != 0) { |
| DRM_ERROR("Failed setting up TTM memory accounting " |
| "subsystem.\n"); |
| return r; |
| } |
| |
| ast->ttm.bo_global_ref.mem_glob = |
| ast->ttm.mem_global_ref.object; |
| global_ref = &ast->ttm.bo_global_ref.ref; |
| global_ref->global_type = DRM_GLOBAL_TTM_BO; |
| global_ref->size = sizeof(struct ttm_bo_global); |
| global_ref->init = &ttm_bo_global_init; |
| global_ref->release = &ttm_bo_global_release; |
| r = drm_global_item_ref(global_ref); |
| if (r != 0) { |
| DRM_ERROR("Failed setting up TTM BO subsystem.\n"); |
| drm_global_item_unref(&ast->ttm.mem_global_ref); |
| return r; |
| } |
| return 0; |
| } |
| |
| static void |
| ast_ttm_global_release(struct ast_private *ast) |
| { |
| if (ast->ttm.mem_global_ref.release == NULL) |
| return; |
| |
| drm_global_item_unref(&ast->ttm.bo_global_ref.ref); |
| drm_global_item_unref(&ast->ttm.mem_global_ref); |
| ast->ttm.mem_global_ref.release = NULL; |
| } |
| |
| |
| static void ast_bo_ttm_destroy(struct ttm_buffer_object *tbo) |
| { |
| struct ast_bo *bo; |
| |
| bo = container_of(tbo, struct ast_bo, bo); |
| |
| drm_gem_object_release(&bo->gem); |
| kfree(bo); |
| } |
| |
| static bool ast_ttm_bo_is_ast_bo(struct ttm_buffer_object *bo) |
| { |
| if (bo->destroy == &ast_bo_ttm_destroy) |
| return true; |
| return false; |
| } |
| |
| static int |
| ast_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
| struct ttm_mem_type_manager *man) |
| { |
| switch (type) { |
| case TTM_PL_SYSTEM: |
| man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; |
| man->available_caching = TTM_PL_MASK_CACHING; |
| man->default_caching = TTM_PL_FLAG_CACHED; |
| break; |
| case TTM_PL_VRAM: |
| man->func = &ttm_bo_manager_func; |
| man->flags = TTM_MEMTYPE_FLAG_FIXED | |
| TTM_MEMTYPE_FLAG_MAPPABLE; |
| man->available_caching = TTM_PL_FLAG_UNCACHED | |
| TTM_PL_FLAG_WC; |
| man->default_caching = TTM_PL_FLAG_WC; |
| break; |
| default: |
| DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static void |
| ast_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) |
| { |
| struct ast_bo *astbo = ast_bo(bo); |
| |
| if (!ast_ttm_bo_is_ast_bo(bo)) |
| return; |
| |
| ast_ttm_placement(astbo, TTM_PL_FLAG_SYSTEM); |
| *pl = astbo->placement; |
| } |
| |
| static int ast_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
| { |
| struct ast_bo *astbo = ast_bo(bo); |
| |
| return drm_vma_node_verify_access(&astbo->gem.vma_node, filp); |
| } |
| |
| static int ast_ttm_io_mem_reserve(struct ttm_bo_device *bdev, |
| struct ttm_mem_reg *mem) |
| { |
| struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; |
| struct ast_private *ast = ast_bdev(bdev); |
| |
| mem->bus.addr = NULL; |
| mem->bus.offset = 0; |
| mem->bus.size = mem->num_pages << PAGE_SHIFT; |
| mem->bus.base = 0; |
| mem->bus.is_iomem = false; |
| if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) |
| return -EINVAL; |
| switch (mem->mem_type) { |
| case TTM_PL_SYSTEM: |
| /* system memory */ |
| return 0; |
| case TTM_PL_VRAM: |
| mem->bus.offset = mem->start << PAGE_SHIFT; |
| mem->bus.base = pci_resource_start(ast->dev->pdev, 0); |
| mem->bus.is_iomem = true; |
| break; |
| default: |
| return -EINVAL; |
| break; |
| } |
| return 0; |
| } |
| |
| static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
| { |
| } |
| |
| static int ast_bo_move(struct ttm_buffer_object *bo, |
| bool evict, bool interruptible, |
| bool no_wait_gpu, |
| struct ttm_mem_reg *new_mem) |
| { |
| int r; |
| r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); |
| return r; |
| } |
| |
| |
| static void ast_ttm_backend_destroy(struct ttm_tt *tt) |
| { |
| ttm_tt_fini(tt); |
| kfree(tt); |
| } |
| |
| static struct ttm_backend_func ast_tt_backend_func = { |
| .destroy = &ast_ttm_backend_destroy, |
| }; |
| |
| |
| static struct ttm_tt *ast_ttm_tt_create(struct ttm_bo_device *bdev, |
| unsigned long size, uint32_t page_flags, |
| struct page *dummy_read_page) |
| { |
| struct ttm_tt *tt; |
| |
| tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL); |
| if (tt == NULL) |
| return NULL; |
| tt->func = &ast_tt_backend_func; |
| if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) { |
| kfree(tt); |
| return NULL; |
| } |
| return tt; |
| } |
| |
| static int ast_ttm_tt_populate(struct ttm_tt *ttm) |
| { |
| return ttm_pool_populate(ttm); |
| } |
| |
| static void ast_ttm_tt_unpopulate(struct ttm_tt *ttm) |
| { |
| ttm_pool_unpopulate(ttm); |
| } |
| |
| struct ttm_bo_driver ast_bo_driver = { |
| .ttm_tt_create = ast_ttm_tt_create, |
| .ttm_tt_populate = ast_ttm_tt_populate, |
| .ttm_tt_unpopulate = ast_ttm_tt_unpopulate, |
| .init_mem_type = ast_bo_init_mem_type, |
| .evict_flags = ast_bo_evict_flags, |
| .move = ast_bo_move, |
| .verify_access = ast_bo_verify_access, |
| .io_mem_reserve = &ast_ttm_io_mem_reserve, |
| .io_mem_free = &ast_ttm_io_mem_free, |
| }; |
| |
| int ast_mm_init(struct ast_private *ast) |
| { |
| int ret; |
| struct drm_device *dev = ast->dev; |
| struct ttm_bo_device *bdev = &ast->ttm.bdev; |
| |
| ret = ast_ttm_global_init(ast); |
| if (ret) |
| return ret; |
| |
| ret = ttm_bo_device_init(&ast->ttm.bdev, |
| ast->ttm.bo_global_ref.ref.object, |
| &ast_bo_driver, |
| dev->anon_inode->i_mapping, |
| DRM_FILE_PAGE_OFFSET, |
| true); |
| if (ret) { |
| DRM_ERROR("Error initialising bo driver; %d\n", ret); |
| return ret; |
| } |
| |
| ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM, |
| ast->vram_size >> PAGE_SHIFT); |
| if (ret) { |
| DRM_ERROR("Failed ttm VRAM init: %d\n", ret); |
| return ret; |
| } |
| |
| ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), |
| pci_resource_len(dev->pdev, 0)); |
| |
| return 0; |
| } |
| |
| void ast_mm_fini(struct ast_private *ast) |
| { |
| ttm_bo_device_release(&ast->ttm.bdev); |
| |
| ast_ttm_global_release(ast); |
| |
| arch_phys_wc_del(ast->fb_mtrr); |
| } |
| |
| void ast_ttm_placement(struct ast_bo *bo, int domain) |
| { |
| u32 c = 0; |
| unsigned i; |
| |
| bo->placement.placement = bo->placements; |
| bo->placement.busy_placement = bo->placements; |
| if (domain & TTM_PL_FLAG_VRAM) |
| bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM; |
| if (domain & TTM_PL_FLAG_SYSTEM) |
| bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM; |
| if (!c) |
| bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM; |
| bo->placement.num_placement = c; |
| bo->placement.num_busy_placement = c; |
| for (i = 0; i < c; ++i) { |
| bo->placements[i].fpfn = 0; |
| bo->placements[i].lpfn = 0; |
| } |
| } |
| |
| int ast_bo_create(struct drm_device *dev, int size, int align, |
| uint32_t flags, struct ast_bo **pastbo) |
| { |
| struct ast_private *ast = dev->dev_private; |
| struct ast_bo *astbo; |
| size_t acc_size; |
| int ret; |
| |
| astbo = kzalloc(sizeof(struct ast_bo), GFP_KERNEL); |
| if (!astbo) |
| return -ENOMEM; |
| |
| ret = drm_gem_object_init(dev, &astbo->gem, size); |
| if (ret) { |
| kfree(astbo); |
| return ret; |
| } |
| |
| astbo->bo.bdev = &ast->ttm.bdev; |
| |
| ast_ttm_placement(astbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); |
| |
| acc_size = ttm_bo_dma_acc_size(&ast->ttm.bdev, size, |
| sizeof(struct ast_bo)); |
| |
| ret = ttm_bo_init(&ast->ttm.bdev, &astbo->bo, size, |
| ttm_bo_type_device, &astbo->placement, |
| align >> PAGE_SHIFT, false, NULL, acc_size, |
| NULL, ast_bo_ttm_destroy); |
| if (ret) |
| return ret; |
| |
| *pastbo = astbo; |
| return 0; |
| } |
| |
| static inline u64 ast_bo_gpu_offset(struct ast_bo *bo) |
| { |
| return bo->bo.offset; |
| } |
| |
| int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr) |
| { |
| int i, ret; |
| |
| if (bo->pin_count) { |
| bo->pin_count++; |
| if (gpu_addr) |
| *gpu_addr = ast_bo_gpu_offset(bo); |
| } |
| |
| ast_ttm_placement(bo, pl_flag); |
| for (i = 0; i < bo->placement.num_placement; i++) |
| bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
| ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
| if (ret) |
| return ret; |
| |
| bo->pin_count = 1; |
| if (gpu_addr) |
| *gpu_addr = ast_bo_gpu_offset(bo); |
| return 0; |
| } |
| |
| int ast_bo_unpin(struct ast_bo *bo) |
| { |
| int i, ret; |
| if (!bo->pin_count) { |
| DRM_ERROR("unpin bad %p\n", bo); |
| return 0; |
| } |
| bo->pin_count--; |
| if (bo->pin_count) |
| return 0; |
| |
| for (i = 0; i < bo->placement.num_placement ; i++) |
| bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; |
| ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
| if (ret) |
| return ret; |
| |
| return 0; |
| } |
| |
| int ast_bo_push_sysram(struct ast_bo *bo) |
| { |
| int i, ret; |
| if (!bo->pin_count) { |
| DRM_ERROR("unpin bad %p\n", bo); |
| return 0; |
| } |
| bo->pin_count--; |
| if (bo->pin_count) |
| return 0; |
| |
| if (bo->kmap.virtual) |
| ttm_bo_kunmap(&bo->kmap); |
| |
| ast_ttm_placement(bo, TTM_PL_FLAG_SYSTEM); |
| for (i = 0; i < bo->placement.num_placement ; i++) |
| bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; |
| |
| ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false); |
| if (ret) { |
| DRM_ERROR("pushing to VRAM failed\n"); |
| return ret; |
| } |
| return 0; |
| } |
| |
| int ast_mmap(struct file *filp, struct vm_area_struct *vma) |
| { |
| struct drm_file *file_priv; |
| struct ast_private *ast; |
| |
| if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) |
| return drm_mmap(filp, vma); |
| |
| file_priv = filp->private_data; |
| ast = file_priv->minor->dev->dev_private; |
| return ttm_bo_mmap(filp, vma, &ast->ttm.bdev); |
| } |