path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

/*
 * 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 <linux/list.h>
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/amdgpu_drm.h>
#include <drm/drm_cache.h>
#include "amdgpu.h"
#include "amdgpu_trace.h"

static bool amdgpu_need_backup(struct amdgpu_device *adev)
{
	if (adev->flags & AMD_IS_APU)
		return false;

	if (amdgpu_gpu_recovery == 0 ||
	    (amdgpu_gpu_recovery == -1  && !amdgpu_sriov_vf(adev)))
		return false;

	return true;
}

static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
{
	struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
	struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);

	amdgpu_bo_kunmap(bo);

	if (bo->gem_base.import_attach)
		drm_prime_gem_destroy(&bo->gem_base, bo->tbo.sg);
	drm_gem_object_release(&bo->gem_base);
	amdgpu_bo_unref(&bo->parent);
	if (!list_empty(&bo->shadow_list)) {
		mutex_lock(&adev->shadow_list_lock);
		list_del_init(&bo->shadow_list);
		mutex_unlock(&adev->shadow_list_lock);
	}
	kfree(bo->metadata);
	kfree(bo);
}

bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
{
	if (bo->destroy == &amdgpu_ttm_bo_destroy)
		return true;
	return false;
}

void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
{
	struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
	struct ttm_placement *placement = &abo->placement;
	struct ttm_place *places = abo->placements;
	u64 flags = abo->flags;
	u32 c = 0;

	if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
		unsigned visible_pfn = adev->mc.visible_vram_size >> PAGE_SHIFT;

		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
			TTM_PL_FLAG_VRAM;

		if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
			places[c].lpfn = visible_pfn;
		else
			places[c].flags |= TTM_PL_FLAG_TOPDOWN;

		if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
			places[c].flags |= TTM_PL_FLAG_CONTIGUOUS;
		c++;
	}

	if (domain & AMDGPU_GEM_DOMAIN_GTT) {
		places[c].fpfn = 0;
		if (flags & AMDGPU_GEM_CREATE_SHADOW)
			places[c].lpfn = adev->mc.gart_size >> PAGE_SHIFT;
		else
			places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_TT;
		if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
			places[c].flags |= TTM_PL_FLAG_WC |
				TTM_PL_FLAG_UNCACHED;
		else
			places[c].flags |= TTM_PL_FLAG_CACHED;
		c++;
	}

	if (domain & AMDGPU_GEM_DOMAIN_CPU) {
		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_SYSTEM;
		if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
			places[c].flags |= TTM_PL_FLAG_WC |
				TTM_PL_FLAG_UNCACHED;
		else
			places[c].flags |= TTM_PL_FLAG_CACHED;
		c++;
	}

	if (domain & AMDGPU_GEM_DOMAIN_GDS) {
		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
		c++;
	}

	if (domain & AMDGPU_GEM_DOMAIN_GWS) {
		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
		c++;
	}

	if (domain & AMDGPU_GEM_DOMAIN_OA) {
		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
		c++;
	}

	if (!c) {
		places[c].fpfn = 0;
		places[c].lpfn = 0;
		places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
		c++