| /* |
| * Copyright 2009 Jerome Glisse. |
| * All Rights Reserved. |
| * |
| * 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: |
| * Jerome Glisse <glisse@freedesktop.org> |
| * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> |
| * Dave Airlie |
| */ |
| #include <ttm/ttm_bo_api.h> |
| #include <ttm/ttm_bo_driver.h> |
| #include <ttm/ttm_placement.h> |
| #include <ttm/ttm_module.h> |
| #include <ttm/ttm_page_alloc.h> |
| #include <drm/drmP.h> |
| #include <drm/amdgpu_drm.h> |
| #include <linux/seq_file.h> |
| #include <linux/slab.h> |
| #include <linux/swiotlb.h> |
| #include <linux/swap.h> |
| #include <linux/pagemap.h> |
| #include <linux/debugfs.h> |
| #include "amdgpu.h" |
| #include "bif/bif_4_1_d.h" |
| |
| #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) |
| |
| static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev); |
| static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev); |
| |
| static struct amdgpu_device *amdgpu_get_adev(struct ttm_bo_device *bdev) |
| { |
| struct amdgpu_mman *mman; |
| struct amdgpu_device *adev; |
| |
| mman = container_of(bdev, struct amdgpu_mman, bdev); |
| adev = container_of(mman, struct amdgpu_device, mman); |
| return adev; |
| } |
| |
| |
| /* |
| * Global memory. |
| */ |
| static int amdgpu_ttm_mem_global_init(struct drm_global_reference *ref) |
| { |
| return ttm_mem_global_init(ref->object); |
| } |
| |
| static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref) |
| { |
| ttm_mem_global_release(ref->object); |
| } |
| |
| static int amdgpu_ttm_global_init(struct amdgpu_device *adev) |
| { |
| struct drm_global_reference *global_ref; |
| struct amdgpu_ring *ring; |
| struct amd_sched_rq *rq; |
| int r; |
| |
| adev->mman.mem_global_referenced = false; |
| global_ref = &adev->mman.mem_global_ref; |
| global_ref->global_type = DRM_GLOBAL_TTM_MEM; |
| global_ref->size = sizeof(struct ttm_mem_global); |
| global_ref->init = &amdgpu_ttm_mem_global_init; |
| global_ref->release = &amdgpu_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; |
| } |
| |
| adev->mman.bo_global_ref.mem_glob = |
| adev->mman.mem_global_ref.object; |
| global_ref = &adev->mman.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(&adev->mman.mem_global_ref); |
| return r; |
| } |
| |
| ring = adev->mman.buffer_funcs_ring; |
| rq = &ring->sched.sched_rq[AMD_SCHED_PRIORITY_KERNEL]; |
| r = amd_sched_entity_init(&ring->sched, &adev->mman.entity, |
| rq, amdgpu_sched_jobs); |
| if (r != 0) { |
| DRM_ERROR("Failed setting up TTM BO move run queue.\n"); |
| drm_global_item_unref(&adev->mman.mem_global_ref); |
| drm_global_item_unref(&adev->mman.bo_global_ref.ref); |
| return r; |
| } |
| |
| adev->mman.mem_global_referenced = true; |
| |
| return 0; |
| } |
| |
| static void amdgpu_ttm_global_fini(struct amdgpu_device *adev) |
| { |
| if (adev->mman.mem_global_referenced) { |
| amd_sched_entity_fini(adev->mman.entity.sched, |
| &adev->mman.entity); |
| drm_global_item_unref(&adev->mman.bo_global_ref.ref); |
| drm_global_item_unref(&adev->mman.mem_global_ref); |
| adev->mman.mem_global_referenced = false; |
| } |
| } |
| |
| static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) |
| { |
| return 0; |
| } |
| |
| static int amdgpu_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, |
| struct ttm_mem_type_manager *man) |
| { |
| struct amdgpu_device *adev; |
| |
| adev = amdgpu_get_adev(bdev); |
| |
| switch (type) { |
| case TTM_PL_SYSTEM: |
| /* System memory */ |
| man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; |
| man->available_caching = TTM_PL_MASK_CACHING; |
| man->default_caching = TTM_PL_FLAG_CACHED; |
| break; |
| case TTM_PL_TT: |
| man->func = &ttm_bo_manager_func; |
| man->gpu_offset = adev->mc.gtt_start; |
| man->available_caching = TTM_PL_MASK_CACHING; |
| man->default_caching = TTM_PL_FLAG_CACHED; |
| man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA; |
| break; |
| case TTM_PL_VRAM: |
| /* "On-card" video ram */ |
| man->func = &ttm_bo_manager_func; |
| man->gpu_offset = adev->mc.vram_start; |
| 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; |
| case AMDGPU_PL_GDS: |
| case AMDGPU_PL_GWS: |
| case AMDGPU_PL_OA: |
| /* On-chip GDS memory*/ |
| man->func = &ttm_bo_manager_func; |
| man->gpu_offset = 0; |
| man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_CMA; |
| man->available_caching = TTM_PL_FLAG_UNCACHED; |
| man->default_caching = TTM_PL_FLAG_UNCACHED; |
| break; |
| default: |
| DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static void amdgpu_evict_flags(struct ttm_buffer_object *bo, |
| struct ttm_placement *placement) |
| { |
| struct amdgpu_bo *rbo; |
| static struct ttm_place placements = { |
| .fpfn = 0, |
| .lpfn = 0, |
| .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM |
| }; |
| |
| if (!amdgpu_ttm_bo_is_amdgpu_bo(bo)) { |
| placement->placement = &placements; |
| placement->busy_placement = &placements; |
| placement->num_placement = 1; |
| placement->num_busy_placement = 1; |
| return; |
| } |
| rbo = container_of(bo, struct amdgpu_bo, tbo); |
| switch (bo->mem.mem_type) { |
| case TTM_PL_VRAM: |
| if (rbo->adev->mman.buffer_funcs_ring->ready == false) |
| amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU); |
| else |
| amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_GTT); |
| break; |
| case TTM_PL_TT: |
| default: |
| amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU); |
| } |
| *placement = rbo->placement; |
| } |
| |
| static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp) |
| { |
| struct amdgpu_bo *rbo = container_of(bo, struct amdgpu_bo, tbo); |
| |
| return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp); |
| } |
| |
| static void amdgpu_move_null(struct ttm_buffer_object *bo, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct ttm_mem_reg *old_mem = &bo->mem; |
| |
| BUG_ON(old_mem->mm_node != NULL); |
| *old_mem = *new_mem; |
| new_mem->mm_node = NULL; |
| } |
| |
| static int amdgpu_move_blit(struct ttm_buffer_object *bo, |
| bool evict, bool no_wait_gpu, |
| struct ttm_mem_reg *new_mem, |
| struct ttm_mem_reg *old_mem) |
| { |
| struct amdgpu_device *adev; |
| struct amdgpu_ring *ring; |
| uint64_t old_start, new_start; |
| struct fence *fence; |
| int r; |
| |
| adev = amdgpu_get_adev(bo->bdev); |
| ring = adev->mman.buffer_funcs_ring; |
| old_start = old_mem->start << PAGE_SHIFT; |
| new_start = new_mem->start << PAGE_SHIFT; |
| |
| switch (old_mem->mem_type) { |
| case TTM_PL_VRAM: |
| old_start += adev->mc.vram_start; |
| break; |
| case TTM_PL_TT: |
| old_start += adev->mc.gtt_start; |
| break; |
| default: |
| DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); |
| return -EINVAL; |
| } |
| switch (new_mem->mem_type) { |
| case TTM_PL_VRAM: |
| new_start += adev->mc.vram_start; |
| break; |
| case TTM_PL_TT: |
| new_start += adev->mc.gtt_start; |
| break; |
| default: |
| DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); |
| return -EINVAL; |
| } |
| if (!ring->ready) { |
| DRM_ERROR("Trying to move memory with ring turned off.\n"); |
| return -EINVAL; |
| } |
| |
| BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0); |
| |
| r = amdgpu_copy_buffer(ring, old_start, new_start, |
| new_mem->num_pages * PAGE_SIZE, /* bytes */ |
| bo->resv, &fence); |
| /* FIXME: handle copy error */ |
| r = ttm_bo_move_accel_cleanup(bo, fence, |
| evict, no_wait_gpu, new_mem); |
| fence_put(fence); |
| return r; |
| } |
| |
| static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo, |
| bool evict, bool interruptible, |
| bool no_wait_gpu, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct amdgpu_device *adev; |
| struct ttm_mem_reg *old_mem = &bo->mem; |
| struct ttm_mem_reg tmp_mem; |
| struct ttm_place placements; |
| struct ttm_placement placement; |
| int r; |
| |
| adev = amdgpu_get_adev(bo->bdev); |
| tmp_mem = *new_mem; |
| tmp_mem.mm_node = NULL; |
| placement.num_placement = 1; |
| placement.placement = &placements; |
| placement.num_busy_placement = 1; |
| placement.busy_placement = &placements; |
| placements.fpfn = 0; |
| placements.lpfn = 0; |
| placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; |
| r = ttm_bo_mem_space(bo, &placement, &tmp_mem, |
| interruptible, no_wait_gpu); |
| if (unlikely(r)) { |
| return r; |
| } |
| |
| r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement); |
| if (unlikely(r)) { |
| goto out_cleanup; |
| } |
| |
| r = ttm_tt_bind(bo->ttm, &tmp_mem); |
| if (unlikely(r)) { |
| goto out_cleanup; |
| } |
| r = amdgpu_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem); |
| if (unlikely(r)) { |
| goto out_cleanup; |
| } |
| r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem); |
| out_cleanup: |
| ttm_bo_mem_put(bo, &tmp_mem); |
| return r; |
| } |
| |
| static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, |
| bool evict, bool interruptible, |
| bool no_wait_gpu, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct amdgpu_device *adev; |
| struct ttm_mem_reg *old_mem = &bo->mem; |
| struct ttm_mem_reg tmp_mem; |
| struct ttm_placement placement; |
| struct ttm_place placements; |
| int r; |
| |
| adev = amdgpu_get_adev(bo->bdev); |
| tmp_mem = *new_mem; |
| tmp_mem.mm_node = NULL; |
| placement.num_placement = 1; |
| placement.placement = &placements; |
| placement.num_busy_placement = 1; |
| placement.busy_placement = &placements; |
| placements.fpfn = 0; |
| placements.lpfn = 0; |
| placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; |
| r = ttm_bo_mem_space(bo, &placement, &tmp_mem, |
| interruptible, no_wait_gpu); |
| if (unlikely(r)) { |
| return r; |
| } |
| r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem); |
| if (unlikely(r)) { |
| goto out_cleanup; |
| } |
| r = amdgpu_move_blit(bo, true, no_wait_gpu, new_mem, old_mem); |
| if (unlikely(r)) { |
| goto out_cleanup; |
| } |
| out_cleanup: |
| ttm_bo_mem_put(bo, &tmp_mem); |
| return r; |
| } |
| |
| static int amdgpu_bo_move(struct ttm_buffer_object *bo, |
| bool evict, bool interruptible, |
| bool no_wait_gpu, |
| struct ttm_mem_reg *new_mem) |
| { |
| struct amdgpu_device *adev; |
| struct amdgpu_bo *abo; |
| struct ttm_mem_reg *old_mem = &bo->mem; |
| int r; |
| |
| /* Can't move a pinned BO */ |
| abo = container_of(bo, struct amdgpu_bo, tbo); |
| if (WARN_ON_ONCE(abo->pin_count > 0)) |
| return -EINVAL; |
| |
| adev = amdgpu_get_adev(bo->bdev); |
| if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
| amdgpu_move_null(bo, new_mem); |
| return 0; |
| } |
| if ((old_mem->mem_type == TTM_PL_TT && |
| new_mem->mem_type == TTM_PL_SYSTEM) || |
| (old_mem->mem_type == TTM_PL_SYSTEM && |
| new_mem->mem_type == TTM_PL_TT)) { |
| /* bind is enough */ |
| amdgpu_move_null(bo, new_mem); |
| return 0; |
| } |
| if (adev->mman.buffer_funcs == NULL || |
| adev->mman.buffer_funcs_ring == NULL || |
| !adev->mman.buffer_funcs_ring->ready) { |
| /* use memcpy */ |
| goto memcpy; |
| } |
| |
| if (old_mem->mem_type == TTM_PL_VRAM && |
| new_mem->mem_type == TTM_PL_SYSTEM) { |
| r = amdgpu_move_vram_ram(bo, evict, interruptible, |
| no_wait_gpu, new_mem); |
| } else if (old_mem->mem_type == TTM_PL_SYSTEM && |
| new_mem->mem_type == TTM_PL_VRAM) { |
| r = amdgpu_move_ram_vram(bo, evict, interruptible, |
| no_wait_gpu, new_mem); |
| } else { |
| r = amdgpu_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem); |
| } |
| |
| if (r) { |
| memcpy: |
| r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); |
| if (r) { |
| return r; |
| } |
| } |
| |
| /* update statistics */ |
| atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &adev->num_bytes_moved); |
| return 0; |
| } |
| |
| static int amdgpu_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 amdgpu_device *adev = amdgpu_get_adev(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_TT: |
| break; |
| case TTM_PL_VRAM: |
| mem->bus.offset = mem->start << PAGE_SHIFT; |
| /* check if it's visible */ |
| if ((mem->bus.offset + mem->bus.size) > adev->mc.visible_vram_size) |
| return -EINVAL; |
| mem->bus.base = adev->mc.aper_base; |
| mem->bus.is_iomem = true; |
| #ifdef __alpha__ |
| /* |
| * Alpha: use bus.addr to hold the ioremap() return, |
| * so we can modify bus.base below. |
| */ |
| if (mem->placement & TTM_PL_FLAG_WC) |
| mem->bus.addr = |
| ioremap_wc(mem->bus.base + mem->bus.offset, |
| mem->bus.size); |
| else |
| mem->bus.addr = |
| ioremap_nocache(mem->bus.base + mem->bus.offset, |
| mem->bus.size); |
| |
| /* |
| * Alpha: Use just the bus offset plus |
| * the hose/domain memory base for bus.base. |
| * It then can be used to build PTEs for VRAM |
| * access, as done in ttm_bo_vm_fault(). |
| */ |
| mem->bus.base = (mem->bus.base & 0x0ffffffffUL) + |
| adev->ddev->hose->dense_mem_base; |
| #endif |
| break; |
| default: |
| return -EINVAL; |
| } |
| return 0; |
| } |
| |
| static void amdgpu_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
| { |
| } |
| |
| /* |
| * TTM backend functions. |
| */ |
| struct amdgpu_ttm_gup_task_list { |
| struct list_head list; |
| struct task_struct *task; |
| }; |
| |
| struct amdgpu_ttm_tt { |
| struct ttm_dma_tt ttm; |
| struct amdgpu_device *adev; |
| u64 offset; |
| uint64_t userptr; |
| struct mm_struct *usermm; |
| uint32_t userflags; |
| spinlock_t guptasklock; |
| struct list_head guptasks; |
| atomic_t mmu_invalidations; |
| }; |
| |
| int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); |
| unsigned pinned = 0; |
| int r; |
| |
| if (gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) { |
| /* check that we only use anonymous memory |
| to prevent problems with writeback */ |
| unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE; |
| struct vm_area_struct *vma; |
| |
| vma = find_vma(gtt->usermm, gtt->userptr); |
| if (!vma || vma->vm_file || vma->vm_end < end) |
| return -EPERM; |
| } |
| |
| do { |
| unsigned num_pages = ttm->num_pages - pinned; |
| uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE; |
| struct page **p = pages + pinned; |
| struct amdgpu_ttm_gup_task_list guptask; |
| |
| guptask.task = current; |
| spin_lock(>t->guptasklock); |
| list_add(&guptask.list, >t->guptasks); |
| spin_unlock(>t->guptasklock); |
| |
| r = get_user_pages(userptr, num_pages, write, 0, p, NULL); |
| |
| spin_lock(>t->guptasklock); |
| list_del(&guptask.list); |
| spin_unlock(>t->guptasklock); |
| |
| if (r < 0) |
| goto release_pages; |
| |
| pinned += r; |
| |
| } while (pinned < ttm->num_pages); |
| |
| return 0; |
| |
| release_pages: |
| release_pages(pages, pinned, 0); |
| return r; |
| } |
| |
| /* prepare the sg table with the user pages */ |
| static int amdgpu_ttm_tt_pin_userptr(struct ttm_tt *ttm) |
| { |
| struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev); |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| unsigned nents; |
| int r; |
| |
| int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); |
| enum dma_data_direction direction = write ? |
| DMA_BIDIRECTIONAL : DMA_TO_DEVICE; |
| |
| r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0, |
| ttm->num_pages << PAGE_SHIFT, |
| GFP_KERNEL); |
| if (r) |
| goto release_sg; |
| |
| r = -ENOMEM; |
| nents = dma_map_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction); |
| if (nents != ttm->sg->nents) |
| goto release_sg; |
| |
| drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, |
| gtt->ttm.dma_address, ttm->num_pages); |
| |
| return 0; |
| |
| release_sg: |
| kfree(ttm->sg); |
| return r; |
| } |
| |
| static void amdgpu_ttm_tt_unpin_userptr(struct ttm_tt *ttm) |
| { |
| struct amdgpu_device *adev = amdgpu_get_adev(ttm->bdev); |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| struct sg_page_iter sg_iter; |
| |
| int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); |
| enum dma_data_direction direction = write ? |
| DMA_BIDIRECTIONAL : DMA_TO_DEVICE; |
| |
| /* double check that we don't free the table twice */ |
| if (!ttm->sg->sgl) |
| return; |
| |
| /* free the sg table and pages again */ |
| dma_unmap_sg(adev->dev, ttm->sg->sgl, ttm->sg->nents, direction); |
| |
| for_each_sg_page(ttm->sg->sgl, &sg_iter, ttm->sg->nents, 0) { |
| struct page *page = sg_page_iter_page(&sg_iter); |
| if (!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY)) |
| set_page_dirty(page); |
| |
| mark_page_accessed(page); |
| put_page(page); |
| } |
| |
| sg_free_table(ttm->sg); |
| } |
| |
| static int amdgpu_ttm_backend_bind(struct ttm_tt *ttm, |
| struct ttm_mem_reg *bo_mem) |
| { |
| struct amdgpu_ttm_tt *gtt = (void*)ttm; |
| uint32_t flags = amdgpu_ttm_tt_pte_flags(gtt->adev, ttm, bo_mem); |
| int r; |
| |
| if (gtt->userptr) { |
| r = amdgpu_ttm_tt_pin_userptr(ttm); |
| if (r) { |
| DRM_ERROR("failed to pin userptr\n"); |
| return r; |
| } |
| } |
| gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); |
| if (!ttm->num_pages) { |
| WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", |
| ttm->num_pages, bo_mem, ttm); |
| } |
| |
| if (bo_mem->mem_type == AMDGPU_PL_GDS || |
| bo_mem->mem_type == AMDGPU_PL_GWS || |
| bo_mem->mem_type == AMDGPU_PL_OA) |
| return -EINVAL; |
| |
| r = amdgpu_gart_bind(gtt->adev, gtt->offset, ttm->num_pages, |
| ttm->pages, gtt->ttm.dma_address, flags); |
| |
| if (r) { |
| DRM_ERROR("failed to bind %lu pages at 0x%08X\n", |
| ttm->num_pages, (unsigned)gtt->offset); |
| return r; |
| } |
| return 0; |
| } |
| |
| static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| |
| /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */ |
| if (gtt->adev->gart.ready) |
| amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages); |
| |
| if (gtt->userptr) |
| amdgpu_ttm_tt_unpin_userptr(ttm); |
| |
| return 0; |
| } |
| |
| static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| |
| ttm_dma_tt_fini(>t->ttm); |
| kfree(gtt); |
| } |
| |
| static struct ttm_backend_func amdgpu_backend_func = { |
| .bind = &amdgpu_ttm_backend_bind, |
| .unbind = &amdgpu_ttm_backend_unbind, |
| .destroy = &amdgpu_ttm_backend_destroy, |
| }; |
| |
| static struct ttm_tt *amdgpu_ttm_tt_create(struct ttm_bo_device *bdev, |
| unsigned long size, uint32_t page_flags, |
| struct page *dummy_read_page) |
| { |
| struct amdgpu_device *adev; |
| struct amdgpu_ttm_tt *gtt; |
| |
| adev = amdgpu_get_adev(bdev); |
| |
| gtt = kzalloc(sizeof(struct amdgpu_ttm_tt), GFP_KERNEL); |
| if (gtt == NULL) { |
| return NULL; |
| } |
| gtt->ttm.ttm.func = &amdgpu_backend_func; |
| gtt->adev = adev; |
| if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags, dummy_read_page)) { |
| kfree(gtt); |
| return NULL; |
| } |
| return >t->ttm.ttm; |
| } |
| |
| static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm) |
| { |
| struct amdgpu_device *adev; |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| unsigned i; |
| int r; |
| bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); |
| |
| if (ttm->state != tt_unpopulated) |
| return 0; |
| |
| if (gtt && gtt->userptr) { |
| ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL); |
| if (!ttm->sg) |
| return -ENOMEM; |
| |
| ttm->page_flags |= TTM_PAGE_FLAG_SG; |
| ttm->state = tt_unbound; |
| return 0; |
| } |
| |
| if (slave && ttm->sg) { |
| drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, |
| gtt->ttm.dma_address, ttm->num_pages); |
| ttm->state = tt_unbound; |
| return 0; |
| } |
| |
| adev = amdgpu_get_adev(ttm->bdev); |
| |
| #ifdef CONFIG_SWIOTLB |
| if (swiotlb_nr_tbl()) { |
| return ttm_dma_populate(>t->ttm, adev->dev); |
| } |
| #endif |
| |
| r = ttm_pool_populate(ttm); |
| if (r) { |
| return r; |
| } |
| |
| for (i = 0; i < ttm->num_pages; i++) { |
| gtt->ttm.dma_address[i] = pci_map_page(adev->pdev, ttm->pages[i], |
| 0, PAGE_SIZE, |
| PCI_DMA_BIDIRECTIONAL); |
| if (pci_dma_mapping_error(adev->pdev, gtt->ttm.dma_address[i])) { |
| while (i--) { |
| pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i], |
| PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| gtt->ttm.dma_address[i] = 0; |
| } |
| ttm_pool_unpopulate(ttm); |
| return -EFAULT; |
| } |
| } |
| return 0; |
| } |
| |
| static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm) |
| { |
| struct amdgpu_device *adev; |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| unsigned i; |
| bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); |
| |
| if (gtt && gtt->userptr) { |
| kfree(ttm->sg); |
| ttm->page_flags &= ~TTM_PAGE_FLAG_SG; |
| return; |
| } |
| |
| if (slave) |
| return; |
| |
| adev = amdgpu_get_adev(ttm->bdev); |
| |
| #ifdef CONFIG_SWIOTLB |
| if (swiotlb_nr_tbl()) { |
| ttm_dma_unpopulate(>t->ttm, adev->dev); |
| return; |
| } |
| #endif |
| |
| for (i = 0; i < ttm->num_pages; i++) { |
| if (gtt->ttm.dma_address[i]) { |
| pci_unmap_page(adev->pdev, gtt->ttm.dma_address[i], |
| PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| } |
| } |
| |
| ttm_pool_unpopulate(ttm); |
| } |
| |
| int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, |
| uint32_t flags) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| |
| if (gtt == NULL) |
| return -EINVAL; |
| |
| gtt->userptr = addr; |
| gtt->usermm = current->mm; |
| gtt->userflags = flags; |
| spin_lock_init(>t->guptasklock); |
| INIT_LIST_HEAD(>t->guptasks); |
| atomic_set(>t->mmu_invalidations, 0); |
| |
| return 0; |
| } |
| |
| struct mm_struct *amdgpu_ttm_tt_get_usermm(struct ttm_tt *ttm) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| |
| if (gtt == NULL) |
| return NULL; |
| |
| return gtt->usermm; |
| } |
| |
| bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start, |
| unsigned long end) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| struct amdgpu_ttm_gup_task_list *entry; |
| unsigned long size; |
| |
| if (gtt == NULL || !gtt->userptr) |
| return false; |
| |
| size = (unsigned long)gtt->ttm.ttm.num_pages * PAGE_SIZE; |
| if (gtt->userptr > end || gtt->userptr + size <= start) |
| return false; |
| |
| spin_lock(>t->guptasklock); |
| list_for_each_entry(entry, >t->guptasks, list) { |
| if (entry->task == current) { |
| spin_unlock(>t->guptasklock); |
| return false; |
| } |
| } |
| spin_unlock(>t->guptasklock); |
| |
| atomic_inc(>t->mmu_invalidations); |
| |
| return true; |
| } |
| |
| bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm, |
| int *last_invalidated) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| int prev_invalidated = *last_invalidated; |
| |
| *last_invalidated = atomic_read(>t->mmu_invalidations); |
| return prev_invalidated != *last_invalidated; |
| } |
| |
| bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm) |
| { |
| struct amdgpu_ttm_tt *gtt = (void *)ttm; |
| |
| if (gtt == NULL) |
| return false; |
| |
| return !!(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY); |
| } |
| |
| uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, |
| struct ttm_mem_reg *mem) |
| { |
| uint32_t flags = 0; |
| |
| if (mem && mem->mem_type != TTM_PL_SYSTEM) |
| flags |= AMDGPU_PTE_VALID; |
| |
| if (mem && mem->mem_type == TTM_PL_TT) { |
| flags |= AMDGPU_PTE_SYSTEM; |
| |
| if (ttm->caching_state == tt_cached) |
| flags |= AMDGPU_PTE_SNOOPED; |
| } |
| |
| if (adev->asic_type >= CHIP_TONGA) |
| flags |= AMDGPU_PTE_EXECUTABLE; |
| |
| flags |= AMDGPU_PTE_READABLE; |
| |
| if (!amdgpu_ttm_tt_is_readonly(ttm)) |
| flags |= AMDGPU_PTE_WRITEABLE; |
| |
| return flags; |
| } |
| |
| static struct ttm_bo_driver amdgpu_bo_driver = { |
| .ttm_tt_create = &amdgpu_ttm_tt_create, |
| .ttm_tt_populate = &amdgpu_ttm_tt_populate, |
| .ttm_tt_unpopulate = &amdgpu_ttm_tt_unpopulate, |
| .invalidate_caches = &amdgpu_invalidate_caches, |
| .init_mem_type = &amdgpu_init_mem_type, |
| .evict_flags = &amdgpu_evict_flags, |
| .move = &amdgpu_bo_move, |
| .verify_access = &amdgpu_verify_access, |
| .move_notify = &amdgpu_bo_move_notify, |
| .fault_reserve_notify = &amdgpu_bo_fault_reserve_notify, |
| .io_mem_reserve = &amdgpu_ttm_io_mem_reserve, |
| .io_mem_free = &amdgpu_ttm_io_mem_free, |
| }; |
| |
| int amdgpu_ttm_init(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| r = amdgpu_ttm_global_init(adev); |
| if (r) { |
| return r; |
| } |
| /* No others user of address space so set it to 0 */ |
| r = ttm_bo_device_init(&adev->mman.bdev, |
| adev->mman.bo_global_ref.ref.object, |
| &amdgpu_bo_driver, |
| adev->ddev->anon_inode->i_mapping, |
| DRM_FILE_PAGE_OFFSET, |
| adev->need_dma32); |
| if (r) { |
| DRM_ERROR("failed initializing buffer object driver(%d).\n", r); |
| return r; |
| } |
| adev->mman.initialized = true; |
| r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM, |
| adev->mc.real_vram_size >> PAGE_SHIFT); |
| if (r) { |
| DRM_ERROR("Failed initializing VRAM heap.\n"); |
| return r; |
| } |
| /* Change the size here instead of the init above so only lpfn is affected */ |
| amdgpu_ttm_set_active_vram_size(adev, adev->mc.visible_vram_size); |
| |
| r = amdgpu_bo_create(adev, 256 * 1024, PAGE_SIZE, true, |
| AMDGPU_GEM_DOMAIN_VRAM, |
| AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED, |
| NULL, NULL, &adev->stollen_vga_memory); |
| if (r) { |
| return r; |
| } |
| r = amdgpu_bo_reserve(adev->stollen_vga_memory, false); |
| if (r) |
| return r; |
| r = amdgpu_bo_pin(adev->stollen_vga_memory, AMDGPU_GEM_DOMAIN_VRAM, NULL); |
| amdgpu_bo_unreserve(adev->stollen_vga_memory); |
| if (r) { |
| amdgpu_bo_unref(&adev->stollen_vga_memory); |
| return r; |
| } |
| DRM_INFO("amdgpu: %uM of VRAM memory ready\n", |
| (unsigned) (adev->mc.real_vram_size / (1024 * 1024))); |
| r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_TT, |
| adev->mc.gtt_size >> PAGE_SHIFT); |
| if (r) { |
| DRM_ERROR("Failed initializing GTT heap.\n"); |
| return r; |
| } |
| DRM_INFO("amdgpu: %uM of GTT memory ready.\n", |
| (unsigned)(adev->mc.gtt_size / (1024 * 1024))); |
| |
| adev->gds.mem.total_size = adev->gds.mem.total_size << AMDGPU_GDS_SHIFT; |
| adev->gds.mem.gfx_partition_size = adev->gds.mem.gfx_partition_size << AMDGPU_GDS_SHIFT; |
| adev->gds.mem.cs_partition_size = adev->gds.mem.cs_partition_size << AMDGPU_GDS_SHIFT; |
| adev->gds.gws.total_size = adev->gds.gws.total_size << AMDGPU_GWS_SHIFT; |
| adev->gds.gws.gfx_partition_size = adev->gds.gws.gfx_partition_size << AMDGPU_GWS_SHIFT; |
| adev->gds.gws.cs_partition_size = adev->gds.gws.cs_partition_size << AMDGPU_GWS_SHIFT; |
| adev->gds.oa.total_size = adev->gds.oa.total_size << AMDGPU_OA_SHIFT; |
| adev->gds.oa.gfx_partition_size = adev->gds.oa.gfx_partition_size << AMDGPU_OA_SHIFT; |
| adev->gds.oa.cs_partition_size = adev->gds.oa.cs_partition_size << AMDGPU_OA_SHIFT; |
| /* GDS Memory */ |
| r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GDS, |
| adev->gds.mem.total_size >> PAGE_SHIFT); |
| if (r) { |
| DRM_ERROR("Failed initializing GDS heap.\n"); |
| return r; |
| } |
| |
| /* GWS */ |
| r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GWS, |
| adev->gds.gws.total_size >> PAGE_SHIFT); |
| if (r) { |
| DRM_ERROR("Failed initializing gws heap.\n"); |
| return r; |
| } |
| |
| /* OA */ |
| r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_OA, |
| adev->gds.oa.total_size >> PAGE_SHIFT); |
| if (r) { |
| DRM_ERROR("Failed initializing oa heap.\n"); |
| return r; |
| } |
| |
| r = amdgpu_ttm_debugfs_init(adev); |
| if (r) { |
| DRM_ERROR("Failed to init debugfs\n"); |
| return r; |
| } |
| return 0; |
| } |
| |
| void amdgpu_ttm_fini(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| if (!adev->mman.initialized) |
| return; |
| amdgpu_ttm_debugfs_fini(adev); |
| if (adev->stollen_vga_memory) { |
| r = amdgpu_bo_reserve(adev->stollen_vga_memory, false); |
| if (r == 0) { |
| amdgpu_bo_unpin(adev->stollen_vga_memory); |
| amdgpu_bo_unreserve(adev->stollen_vga_memory); |
| } |
| amdgpu_bo_unref(&adev->stollen_vga_memory); |
| } |
| ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_VRAM); |
| ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_TT); |
| ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GDS); |
| ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GWS); |
| ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_OA); |
| ttm_bo_device_release(&adev->mman.bdev); |
| amdgpu_gart_fini(adev); |
| amdgpu_ttm_global_fini(adev); |
| adev->mman.initialized = false; |
| DRM_INFO("amdgpu: ttm finalized\n"); |
| } |
| |
| /* this should only be called at bootup or when userspace |
| * isn't running */ |
| void amdgpu_ttm_set_active_vram_size(struct amdgpu_device *adev, u64 size) |
| { |
| struct ttm_mem_type_manager *man; |
| |
| if (!adev->mman.initialized) |
| return; |
| |
| man = &adev->mman.bdev.man[TTM_PL_VRAM]; |
| /* this just adjusts TTM size idea, which sets lpfn to the correct value */ |
| man->size = size >> PAGE_SHIFT; |
| } |
| |
| int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma) |
| { |
| struct drm_file *file_priv; |
| struct amdgpu_device *adev; |
| |
| if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) |
| return -EINVAL; |
| |
| file_priv = filp->private_data; |
| adev = file_priv->minor->dev->dev_private; |
| if (adev == NULL) |
| return -EINVAL; |
| |
| return ttm_bo_mmap(filp, vma, &adev->mman.bdev); |
| } |
| |
| int amdgpu_copy_buffer(struct amdgpu_ring *ring, |
| uint64_t src_offset, |
| uint64_t dst_offset, |
| uint32_t byte_count, |
| struct reservation_object *resv, |
| struct fence **fence) |
| { |
| struct amdgpu_device *adev = ring->adev; |
| struct amdgpu_job *job; |
| |
| uint32_t max_bytes; |
| unsigned num_loops, num_dw; |
| unsigned i; |
| int r; |
| |
| max_bytes = adev->mman.buffer_funcs->copy_max_bytes; |
| num_loops = DIV_ROUND_UP(byte_count, max_bytes); |
| num_dw = num_loops * adev->mman.buffer_funcs->copy_num_dw; |
| |
| /* for IB padding */ |
| while (num_dw & 0x7) |
| num_dw++; |
| |
| r = amdgpu_job_alloc_with_ib(adev, num_dw * 4, &job); |
| if (r) |
| return r; |
| |
| if (resv) { |
| r = amdgpu_sync_resv(adev, &job->sync, resv, |
| AMDGPU_FENCE_OWNER_UNDEFINED); |
| if (r) { |
| DRM_ERROR("sync failed (%d).\n", r); |
| goto error_free; |
| } |
| } |
| |
| for (i = 0; i < num_loops; i++) { |
| uint32_t cur_size_in_bytes = min(byte_count, max_bytes); |
| |
| amdgpu_emit_copy_buffer(adev, &job->ibs[0], src_offset, |
| dst_offset, cur_size_in_bytes); |
| |
| src_offset += cur_size_in_bytes; |
| dst_offset += cur_size_in_bytes; |
| byte_count -= cur_size_in_bytes; |
| } |
| |
| amdgpu_ring_pad_ib(ring, &job->ibs[0]); |
| WARN_ON(job->ibs[0].length_dw > num_dw); |
| r = amdgpu_job_submit(job, ring, &adev->mman.entity, |
| AMDGPU_FENCE_OWNER_UNDEFINED, fence); |
| if (r) |
| goto error_free; |
| |
| return 0; |
| |
| error_free: |
| amdgpu_job_free(job); |
| return r; |
| } |
| |
| #if defined(CONFIG_DEBUG_FS) |
| |
| static int amdgpu_mm_dump_table(struct seq_file *m, void *data) |
| { |
| struct drm_info_node *node = (struct drm_info_node *)m->private; |
| unsigned ttm_pl = *(int *)node->info_ent->data; |
| struct drm_device *dev = node->minor->dev; |
| struct amdgpu_device *adev = dev->dev_private; |
| struct drm_mm *mm = (struct drm_mm *)adev->mman.bdev.man[ttm_pl].priv; |
| int ret; |
| struct ttm_bo_global *glob = adev->mman.bdev.glob; |
| |
| spin_lock(&glob->lru_lock); |
| ret = drm_mm_dump_table(m, mm); |
| spin_unlock(&glob->lru_lock); |
| if (ttm_pl == TTM_PL_VRAM) |
| seq_printf(m, "man size:%llu pages, ram usage:%lluMB, vis usage:%lluMB\n", |
| adev->mman.bdev.man[ttm_pl].size, |
| (u64)atomic64_read(&adev->vram_usage) >> 20, |
| (u64)atomic64_read(&adev->vram_vis_usage) >> 20); |
| return ret; |
| } |
| |
| static int ttm_pl_vram = TTM_PL_VRAM; |
| static int ttm_pl_tt = TTM_PL_TT; |
| |
| static struct drm_info_list amdgpu_ttm_debugfs_list[] = { |
| {"amdgpu_vram_mm", amdgpu_mm_dump_table, 0, &ttm_pl_vram}, |
| {"amdgpu_gtt_mm", amdgpu_mm_dump_table, 0, &ttm_pl_tt}, |
| {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL}, |
| #ifdef CONFIG_SWIOTLB |
| {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL} |
| #endif |
| }; |
| |
| static ssize_t amdgpu_ttm_vram_read(struct file *f, char __user *buf, |
| size_t size, loff_t *pos) |
| { |
| struct amdgpu_device *adev = f->f_inode->i_private; |
| ssize_t result = 0; |
| int r; |
| |
| if (size & 0x3 || *pos & 0x3) |
| return -EINVAL; |
| |
| while (size) { |
| unsigned long flags; |
| uint32_t value; |
| |
| if (*pos >= adev->mc.mc_vram_size) |
| return result; |
| |
| spin_lock_irqsave(&adev->mmio_idx_lock, flags); |
| WREG32(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000); |
| WREG32(mmMM_INDEX_HI, *pos >> 31); |
| value = RREG32(mmMM_DATA); |
| spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); |
| |
| r = put_user(value, (uint32_t *)buf); |
| if (r) |
| return r; |
| |
| result += 4; |
| buf += 4; |
| *pos += 4; |
| size -= 4; |
| } |
| |
| return result; |
| } |
| |
| static const struct file_operations amdgpu_ttm_vram_fops = { |
| .owner = THIS_MODULE, |
| .read = amdgpu_ttm_vram_read, |
| .llseek = default_llseek |
| }; |
| |
| static ssize_t amdgpu_ttm_gtt_read(struct file *f, char __user *buf, |
| size_t size, loff_t *pos) |
| { |
| struct amdgpu_device *adev = f->f_inode->i_private; |
| ssize_t result = 0; |
| int r; |
| |
| while (size) { |
| loff_t p = *pos / PAGE_SIZE; |
| unsigned off = *pos & ~PAGE_MASK; |
| size_t cur_size = min_t(size_t, size, PAGE_SIZE - off); |
| struct page *page; |
| void *ptr; |
| |
| if (p >= adev->gart.num_cpu_pages) |
| return result; |
| |
| page = adev->gart.pages[p]; |
| if (page) { |
| ptr = kmap(page); |
| ptr += off; |
| |
| r = copy_to_user(buf, ptr, cur_size); |
| kunmap(adev->gart.pages[p]); |
| } else |
| r = clear_user(buf, cur_size); |
| |
| if (r) |
| return -EFAULT; |
| |
| result += cur_size; |
| buf += cur_size; |
| *pos += cur_size; |
| size -= cur_size; |
| } |
| |
| return result; |
| } |
| |
| static const struct file_operations amdgpu_ttm_gtt_fops = { |
| .owner = THIS_MODULE, |
| .read = amdgpu_ttm_gtt_read, |
| .llseek = default_llseek |
| }; |
| |
| #endif |
| |
| static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev) |
| { |
| #if defined(CONFIG_DEBUG_FS) |
| unsigned count; |
| |
| struct drm_minor *minor = adev->ddev->primary; |
| struct dentry *ent, *root = minor->debugfs_root; |
| |
| ent = debugfs_create_file("amdgpu_vram", S_IFREG | S_IRUGO, root, |
| adev, &amdgpu_ttm_vram_fops); |
| if (IS_ERR(ent)) |
| return PTR_ERR(ent); |
| i_size_write(ent->d_inode, adev->mc.mc_vram_size); |
| adev->mman.vram = ent; |
| |
| ent = debugfs_create_file("amdgpu_gtt", S_IFREG | S_IRUGO, root, |
| adev, &amdgpu_ttm_gtt_fops); |
| if (IS_ERR(ent)) |
| return PTR_ERR(ent); |
| i_size_write(ent->d_inode, adev->mc.gtt_size); |
| adev->mman.gtt = ent; |
| |
| count = ARRAY_SIZE(amdgpu_ttm_debugfs_list); |
| |
| #ifdef CONFIG_SWIOTLB |
| if (!swiotlb_nr_tbl()) |
| --count; |
| #endif |
| |
| return amdgpu_debugfs_add_files(adev, amdgpu_ttm_debugfs_list, count); |
| #else |
| |
| return 0; |
| #endif |
| } |
| |
| static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev) |
| { |
| #if defined(CONFIG_DEBUG_FS) |
| |
| debugfs_remove(adev->mman.vram); |
| adev->mman.vram = NULL; |
| |
| debugfs_remove(adev->mman.gtt); |
| adev->mman.gtt = NULL; |
| #endif |
| } |