![Maninder Singh](/assets/img/avatar_default.png)
Use kzalloc rather than kcalloc(1.. for allocating one thing. Signed-off-by: Maninder Singh <maninder1.s@samsung.com> Reviewed-by: Vaneet Narang <v.narang@samsung.com> Reviewed-by: Christian Konig <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1216 lines
31 KiB
C
1216 lines
31 KiB
C
/*
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* Copyright 2009 Jerome Glisse.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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*/
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/*
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* Authors:
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* Jerome Glisse <glisse@freedesktop.org>
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* Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
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* Dave Airlie
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*/
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#include <ttm/ttm_bo_api.h>
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#include <ttm/ttm_bo_driver.h>
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#include <ttm/ttm_placement.h>
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#include <ttm/ttm_module.h>
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#include <ttm/ttm_page_alloc.h>
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#include <drm/drmP.h>
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#include <drm/amdgpu_drm.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/swiotlb.h>
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#include <linux/swap.h>
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#include <linux/pagemap.h>
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#include <linux/debugfs.h>
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#include "amdgpu.h"
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#include "bif/bif_4_1_d.h"
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#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
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static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
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static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev);
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static struct amdgpu_device *amdgpu_get_adev(struct ttm_bo_device *bdev)
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{
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struct amdgpu_mman *mman;
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struct amdgpu_device *adev;
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mman = container_of(bdev, struct amdgpu_mman, bdev);
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adev = container_of(mman, struct amdgpu_device, mman);
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return adev;
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}
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/*
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* Global memory.
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*/
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static int amdgpu_ttm_mem_global_init(struct drm_global_reference *ref)
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{
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return ttm_mem_global_init(ref->object);
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}
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static void amdgpu_ttm_mem_global_release(struct drm_global_reference *ref)
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{
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ttm_mem_global_release(ref->object);
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}
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static int amdgpu_ttm_global_init(struct amdgpu_device *adev)
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{
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struct drm_global_reference *global_ref;
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int r;
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adev->mman.mem_global_referenced = false;
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global_ref = &adev->mman.mem_global_ref;
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global_ref->global_type = DRM_GLOBAL_TTM_MEM;
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global_ref->size = sizeof(struct ttm_mem_global);
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global_ref->init = &amdgpu_ttm_mem_global_init;
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global_ref->release = &amdgpu_ttm_mem_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM memory accounting "
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"subsystem.\n");
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return r;
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}
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adev->mman.bo_global_ref.mem_glob =
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adev->mman.mem_global_ref.object;
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global_ref = &adev->mman.bo_global_ref.ref;
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global_ref->global_type = DRM_GLOBAL_TTM_BO;
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global_ref->size = sizeof(struct ttm_bo_global);
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global_ref->init = &ttm_bo_global_init;
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global_ref->release = &ttm_bo_global_release;
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r = drm_global_item_ref(global_ref);
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if (r != 0) {
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DRM_ERROR("Failed setting up TTM BO subsystem.\n");
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drm_global_item_unref(&adev->mman.mem_global_ref);
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return r;
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}
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adev->mman.mem_global_referenced = true;
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return 0;
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}
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static void amdgpu_ttm_global_fini(struct amdgpu_device *adev)
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{
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if (adev->mman.mem_global_referenced) {
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drm_global_item_unref(&adev->mman.bo_global_ref.ref);
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drm_global_item_unref(&adev->mman.mem_global_ref);
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adev->mman.mem_global_referenced = false;
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}
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}
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static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
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{
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return 0;
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}
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static int amdgpu_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
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struct ttm_mem_type_manager *man)
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{
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struct amdgpu_device *adev;
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adev = amdgpu_get_adev(bdev);
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switch (type) {
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case TTM_PL_SYSTEM:
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/* System memory */
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man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_MASK_CACHING;
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man->default_caching = TTM_PL_FLAG_CACHED;
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break;
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case TTM_PL_TT:
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man->func = &ttm_bo_manager_func;
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man->gpu_offset = adev->mc.gtt_start;
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man->available_caching = TTM_PL_MASK_CACHING;
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man->default_caching = TTM_PL_FLAG_CACHED;
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man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
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break;
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case TTM_PL_VRAM:
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/* "On-card" video ram */
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man->func = &ttm_bo_manager_func;
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man->gpu_offset = adev->mc.vram_start;
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man->flags = TTM_MEMTYPE_FLAG_FIXED |
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TTM_MEMTYPE_FLAG_MAPPABLE;
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man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
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man->default_caching = TTM_PL_FLAG_WC;
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break;
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case AMDGPU_PL_GDS:
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case AMDGPU_PL_GWS:
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case AMDGPU_PL_OA:
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/* On-chip GDS memory*/
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man->func = &ttm_bo_manager_func;
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man->gpu_offset = 0;
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man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_CMA;
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man->available_caching = TTM_PL_FLAG_UNCACHED;
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man->default_caching = TTM_PL_FLAG_UNCACHED;
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break;
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default:
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DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
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return -EINVAL;
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}
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return 0;
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}
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static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
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struct ttm_placement *placement)
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{
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struct amdgpu_bo *rbo;
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static struct ttm_place placements = {
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.fpfn = 0,
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.lpfn = 0,
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.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
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};
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if (!amdgpu_ttm_bo_is_amdgpu_bo(bo)) {
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placement->placement = &placements;
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placement->busy_placement = &placements;
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placement->num_placement = 1;
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placement->num_busy_placement = 1;
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return;
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}
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rbo = container_of(bo, struct amdgpu_bo, tbo);
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switch (bo->mem.mem_type) {
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case TTM_PL_VRAM:
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if (rbo->adev->mman.buffer_funcs_ring->ready == false)
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amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU);
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else
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amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_GTT);
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break;
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case TTM_PL_TT:
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default:
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amdgpu_ttm_placement_from_domain(rbo, AMDGPU_GEM_DOMAIN_CPU);
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}
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*placement = rbo->placement;
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}
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static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp)
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{
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struct amdgpu_bo *rbo = container_of(bo, struct amdgpu_bo, tbo);
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return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp);
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}
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static void amdgpu_move_null(struct ttm_buffer_object *bo,
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struct ttm_mem_reg *new_mem)
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{
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struct ttm_mem_reg *old_mem = &bo->mem;
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BUG_ON(old_mem->mm_node != NULL);
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*old_mem = *new_mem;
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new_mem->mm_node = NULL;
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}
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static int amdgpu_move_blit(struct ttm_buffer_object *bo,
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bool evict, bool no_wait_gpu,
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struct ttm_mem_reg *new_mem,
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struct ttm_mem_reg *old_mem)
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{
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struct amdgpu_device *adev;
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struct amdgpu_ring *ring;
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uint64_t old_start, new_start;
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struct amdgpu_fence *fence;
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int r;
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adev = amdgpu_get_adev(bo->bdev);
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ring = adev->mman.buffer_funcs_ring;
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old_start = old_mem->start << PAGE_SHIFT;
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new_start = new_mem->start << PAGE_SHIFT;
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switch (old_mem->mem_type) {
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case TTM_PL_VRAM:
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old_start += adev->mc.vram_start;
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break;
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case TTM_PL_TT:
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old_start += adev->mc.gtt_start;
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break;
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default:
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DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
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return -EINVAL;
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}
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switch (new_mem->mem_type) {
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case TTM_PL_VRAM:
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new_start += adev->mc.vram_start;
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break;
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case TTM_PL_TT:
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new_start += adev->mc.gtt_start;
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break;
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default:
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DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
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return -EINVAL;
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}
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if (!ring->ready) {
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DRM_ERROR("Trying to move memory with ring turned off.\n");
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return -EINVAL;
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}
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BUILD_BUG_ON((PAGE_SIZE % AMDGPU_GPU_PAGE_SIZE) != 0);
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r = amdgpu_copy_buffer(ring, old_start, new_start,
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new_mem->num_pages * PAGE_SIZE, /* bytes */
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bo->resv, &fence);
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/* FIXME: handle copy error */
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r = ttm_bo_move_accel_cleanup(bo, &fence->base,
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evict, no_wait_gpu, new_mem);
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amdgpu_fence_unref(&fence);
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return r;
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}
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static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo,
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bool evict, bool interruptible,
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bool no_wait_gpu,
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struct ttm_mem_reg *new_mem)
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{
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struct amdgpu_device *adev;
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struct ttm_mem_reg *old_mem = &bo->mem;
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struct ttm_mem_reg tmp_mem;
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struct ttm_place placements;
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struct ttm_placement placement;
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int r;
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adev = amdgpu_get_adev(bo->bdev);
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tmp_mem = *new_mem;
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tmp_mem.mm_node = NULL;
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placement.num_placement = 1;
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placement.placement = &placements;
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placement.num_busy_placement = 1;
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placement.busy_placement = &placements;
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placements.fpfn = 0;
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placements.lpfn = 0;
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placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
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r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
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interruptible, no_wait_gpu);
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if (unlikely(r)) {
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return r;
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}
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r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
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if (unlikely(r)) {
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goto out_cleanup;
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}
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r = ttm_tt_bind(bo->ttm, &tmp_mem);
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if (unlikely(r)) {
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goto out_cleanup;
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}
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r = amdgpu_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem);
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if (unlikely(r)) {
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goto out_cleanup;
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}
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r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
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out_cleanup:
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ttm_bo_mem_put(bo, &tmp_mem);
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return r;
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}
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static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo,
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bool evict, bool interruptible,
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bool no_wait_gpu,
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struct ttm_mem_reg *new_mem)
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{
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struct amdgpu_device *adev;
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struct ttm_mem_reg *old_mem = &bo->mem;
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struct ttm_mem_reg tmp_mem;
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struct ttm_placement placement;
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struct ttm_place placements;
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int r;
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adev = amdgpu_get_adev(bo->bdev);
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tmp_mem = *new_mem;
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tmp_mem.mm_node = NULL;
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placement.num_placement = 1;
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placement.placement = &placements;
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placement.num_busy_placement = 1;
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placement.busy_placement = &placements;
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placements.fpfn = 0;
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placements.lpfn = 0;
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placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
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r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
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interruptible, no_wait_gpu);
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if (unlikely(r)) {
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return r;
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}
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r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
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if (unlikely(r)) {
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goto out_cleanup;
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}
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r = amdgpu_move_blit(bo, true, no_wait_gpu, new_mem, old_mem);
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if (unlikely(r)) {
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goto out_cleanup;
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}
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out_cleanup:
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ttm_bo_mem_put(bo, &tmp_mem);
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return r;
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}
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static int amdgpu_bo_move(struct ttm_buffer_object *bo,
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bool evict, bool interruptible,
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bool no_wait_gpu,
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struct ttm_mem_reg *new_mem)
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{
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struct amdgpu_device *adev;
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struct ttm_mem_reg *old_mem = &bo->mem;
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int r;
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adev = amdgpu_get_adev(bo->bdev);
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if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
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amdgpu_move_null(bo, new_mem);
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return 0;
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}
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if ((old_mem->mem_type == TTM_PL_TT &&
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new_mem->mem_type == TTM_PL_SYSTEM) ||
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(old_mem->mem_type == TTM_PL_SYSTEM &&
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new_mem->mem_type == TTM_PL_TT)) {
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/* bind is enough */
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amdgpu_move_null(bo, new_mem);
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return 0;
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}
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if (adev->mman.buffer_funcs == NULL ||
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adev->mman.buffer_funcs_ring == NULL ||
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!adev->mman.buffer_funcs_ring->ready) {
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/* use memcpy */
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goto memcpy;
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}
|
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|
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if (old_mem->mem_type == TTM_PL_VRAM &&
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new_mem->mem_type == TTM_PL_SYSTEM) {
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r = amdgpu_move_vram_ram(bo, evict, interruptible,
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no_wait_gpu, new_mem);
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} else if (old_mem->mem_type == TTM_PL_SYSTEM &&
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new_mem->mem_type == TTM_PL_VRAM) {
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r = amdgpu_move_ram_vram(bo, evict, interruptible,
|
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no_wait_gpu, new_mem);
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} else {
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r = amdgpu_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem);
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}
|
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|
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if (r) {
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memcpy:
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r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
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if (r) {
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return r;
|
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}
|
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}
|
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|
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/* update statistics */
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atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &adev->num_bytes_moved);
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return 0;
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}
|
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|
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static int amdgpu_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
|
|
{
|
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struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
|
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struct amdgpu_device *adev = amdgpu_get_adev(bdev);
|
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|
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mem->bus.addr = NULL;
|
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mem->bus.offset = 0;
|
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mem->bus.size = mem->num_pages << PAGE_SHIFT;
|
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mem->bus.base = 0;
|
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mem->bus.is_iomem = false;
|
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if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
|
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return -EINVAL;
|
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switch (mem->mem_type) {
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case TTM_PL_SYSTEM:
|
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/* system memory */
|
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return 0;
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case TTM_PL_TT:
|
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break;
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case TTM_PL_VRAM:
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mem->bus.offset = mem->start << PAGE_SHIFT;
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/* check if it's visible */
|
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if ((mem->bus.offset + mem->bus.size) > adev->mc.visible_vram_size)
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return -EINVAL;
|
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mem->bus.base = adev->mc.aper_base;
|
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mem->bus.is_iomem = true;
|
|
#ifdef __alpha__
|
|
/*
|
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* Alpha: use bus.addr to hold the ioremap() return,
|
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* so we can modify bus.base below.
|
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*/
|
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if (mem->placement & TTM_PL_FLAG_WC)
|
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mem->bus.addr =
|
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ioremap_wc(mem->bus.base + mem->bus.offset,
|
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mem->bus.size);
|
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else
|
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mem->bus.addr =
|
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ioremap_nocache(mem->bus.base + mem->bus.offset,
|
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mem->bus.size);
|
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|
|
/*
|
|
* 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_tt {
|
|
struct ttm_dma_tt ttm;
|
|
struct amdgpu_device *adev;
|
|
u64 offset;
|
|
uint64_t userptr;
|
|
struct mm_struct *usermm;
|
|
uint32_t userflags;
|
|
};
|
|
|
|
/* 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 pinned = 0, nents;
|
|
int r;
|
|
|
|
int write = !(gtt->userflags & AMDGPU_GEM_USERPTR_READONLY);
|
|
enum dma_data_direction direction = write ?
|
|
DMA_BIDIRECTIONAL : DMA_TO_DEVICE;
|
|
|
|
if (current->mm != gtt->usermm)
|
|
return -EPERM;
|
|
|
|
if (gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) {
|
|
/* check that we only pin down 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 **pages = ttm->pages + pinned;
|
|
|
|
r = get_user_pages(current, current->mm, userptr, num_pages,
|
|
write, 0, pages, NULL);
|
|
if (r < 0)
|
|
goto release_pages;
|
|
|
|
pinned += r;
|
|
|
|
} while (pinned < ttm->num_pages);
|
|
|
|
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);
|
|
|
|
release_pages:
|
|
release_pages(ttm->pages, pinned, 0);
|
|
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);
|
|
page_cache_release(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)
|
|
amdgpu_ttm_tt_pin_userptr(ttm);
|
|
|
|
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;
|
|
return 0;
|
|
}
|
|
|
|
bool amdgpu_ttm_tt_has_userptr(struct ttm_tt *ttm)
|
|
{
|
|
struct amdgpu_ttm_tt *gtt = (void *)ttm;
|
|
|
|
if (gtt == NULL)
|
|
return false;
|
|
|
|
return !!gtt->userptr;
|
|
}
|
|
|
|
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 || ttm->caching_state == tt_cached)
|
|
flags |= AMDGPU_PTE_SNOOPED;
|
|
|
|
if (adev->asic_type >= CHIP_TOPAZ)
|
|
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, 0,
|
|
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 amdgpu_fence **fence)
|
|
{
|
|
struct amdgpu_device *adev = ring->adev;
|
|
struct amdgpu_sync sync;
|
|
uint32_t max_bytes;
|
|
unsigned num_loops, num_dw;
|
|
unsigned i;
|
|
int r;
|
|
|
|
/* sync other rings */
|
|
amdgpu_sync_create(&sync);
|
|
if (resv) {
|
|
r = amdgpu_sync_resv(adev, &sync, resv, false);
|
|
if (r) {
|
|
DRM_ERROR("sync failed (%d).\n", r);
|
|
amdgpu_sync_free(adev, &sync, NULL);
|
|
return 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 fence and sync */
|
|
num_dw += 64 + AMDGPU_NUM_SYNCS * 8;
|
|
|
|
r = amdgpu_ring_lock(ring, num_dw);
|
|
if (r) {
|
|
DRM_ERROR("ring lock failed (%d).\n", r);
|
|
amdgpu_sync_free(adev, &sync, NULL);
|
|
return r;
|
|
}
|
|
|
|
amdgpu_sync_rings(&sync, ring);
|
|
|
|
for (i = 0; i < num_loops; i++) {
|
|
uint32_t cur_size_in_bytes = min(byte_count, max_bytes);
|
|
|
|
amdgpu_emit_copy_buffer(adev, ring, 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;
|
|
}
|
|
|
|
r = amdgpu_fence_emit(ring, AMDGPU_FENCE_OWNER_MOVE, fence);
|
|
if (r) {
|
|
amdgpu_ring_unlock_undo(ring);
|
|
amdgpu_sync_free(adev, &sync, NULL);
|
|
return r;
|
|
}
|
|
|
|
amdgpu_ring_unlock_commit(ring);
|
|
amdgpu_sync_free(adev, &sync, *fence);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#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);
|
|
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
|
|
}
|