/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/**************************************************************************
*
* Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
* 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 above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* 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.
*
**************************************************************************/
/*
* Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
*/
#define pr_fmt(fmt) "[TTM] " fmt
#include <drm/ttm/ttm_module.h>
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_placement.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/module.h>
#include <linux/atomic.h>
#include <linux/dma-resv.h>
static void ttm_bo_global_kobj_release(struct kobject *kobj);
/**
* ttm_global_mutex - protecting the global BO state
*/
DEFINE_MUTEX(ttm_global_mutex);
unsigned ttm_bo_glob_use_count;
struct ttm_bo_global ttm_bo_glob;
EXPORT_SYMBOL(ttm_bo_glob);
static struct attribute ttm_bo_count = {
.name = "bo_count",
.mode = S_IRUGO
};
/* default destructor */
static void ttm_bo_default_destroy(struct ttm_buffer_object *bo)
{
kfree(bo);
}
static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo,
struct ttm_placement *placement)
{
struct drm_printer p = drm_debug_printer(TTM_PFX);
struct ttm_resource_manager *man;
int i, mem_type;
drm_printf(&p, "No space for %p (%lu pages, %luK, %luM)\n",
bo, bo->mem.num_pages, bo->mem.size >> 10,
bo->mem.size >> 20);
for (i = 0; i < placement->num_placement; i++) {
mem_type = placement->placement[i].mem_type;
drm_printf(&p, " placement[%d]=0x%08X (%d)\n",
i, placement->placement[i].flags, mem_type);
man = ttm_manager_type(bo->bdev, mem_type);
ttm_resource_manager_debug(man, &p);
}
}
static ssize_t ttm_bo_global_show(struct kobject *kobj,
struct attribute *attr,
char *buffer)
{
struct ttm_bo_global *glob =
container_of(kobj, struct ttm_bo_global, kobj);
return snprintf(buffer, PAGE_SIZE, "%d\n",
atomic_read(&glob->bo_count));
}
static struct attribute *ttm_bo_global_attrs[] = {
&ttm_bo_count,
NULL
};
static const struct sysfs_ops ttm_bo_global_ops = {
.show = &ttm_
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