kolibrios/drivers/video/drm/ttm/ttm_memory.c

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/**************************************************************************
*
* 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.
*
**************************************************************************/
#define pr_fmt(fmt) "[TTM] " fmt
#include <drm/ttm/ttm_memory.h>
#include <drm/ttm/ttm_module.h>
#include <drm/ttm/ttm_page_alloc.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/slab.h>
#define TTM_MEMORY_ALLOC_RETRIES 4
int ttm_mem_global_init(struct ttm_mem_global *glob)
{
int ret;
int i;
spin_lock_init(&glob->lock);
ttm_page_alloc_init(glob, 4*1024);
return 0;
out_no_zone:
ttm_mem_global_release(glob);
return ret;
}
EXPORT_SYMBOL(ttm_mem_global_init);
void ttm_mem_global_release(struct ttm_mem_global *glob)
{
unsigned int i;
/* let the page allocator first stop the shrink work. */
// ttm_page_alloc_fini();
// ttm_dma_page_alloc_fini();
}
void ttm_mem_global_free(struct ttm_mem_global *glob,
uint64_t amount)
{
}
EXPORT_SYMBOL(ttm_mem_global_free);
int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
bool no_wait, bool interruptible)
{
/**
* Normal allocations of kernel memory are registered in
* all zones.
*/
return 0;
}
EXPORT_SYMBOL(ttm_mem_global_alloc);
size_t ttm_round_pot(size_t size)
{
if ((size & (size - 1)) == 0)
return size;
else if (size > PAGE_SIZE)
return PAGE_ALIGN(size);
else {
size_t tmp_size = 4;
while (tmp_size < size)
tmp_size <<= 1;
return tmp_size;
}
return 0;
}
EXPORT_SYMBOL(ttm_round_pot);