path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.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 <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 <ttm/ttm_memory.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);
}

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) {
		DRM_ERROR("Failed setting up TTM memory accounting "
			  "subsystem.\n");
		goto error_mem;
	}

	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) {
		DRM_ERROR("Failed setting up TTM BO subsystem.\n");
		goto error_bo;
	}

	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) {
		DRM_ERROR("Failed setting up TTM BO move run queue.\n");
		goto error_entity;
	}

	adev->mman.mem_global_referenced = true;

	return 0;

error_entity:
	drm_global_item_unref(&adev->mman.bo_global_ref.ref);
error_bo:
	drm_global_item_unref(&adev->mman.mem_global_ref);
error_mem:
	return r;
}

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 = &amdgpu_gtt_mgr_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;
	}
	retur