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/* Copyright (c) 2008-2010, Advanced Micro Devices. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Advanced Micro Devices nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __GSL_KMOD_CLEANUP_H
#define __GSL_KMOD_CLEANUP_H
#include "gsl_types.h"
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/list.h>
#if (GSL_CONTEXT_MAX > 127)
#error created_contexts_array supports context numbers only 127 or less.
#endif
static const s8 EMPTY_ENTRY = -1;
/* A structure to make list of allocated memory blocks. List per fd. */
/* should probably be allocated from slab cache to minimise fragmentation */
struct gsl_kmod_alloc_list
{
struct list_head node;
gsl_memdesc_t allocated_block;
u32 allocation_number;
};
/* A structure to hold abovementioned list of blocks. Contain per fd data. */
struct gsl_kmod_per_fd_data
{
struct list_head allocated_blocks_head; // list head
u32 maximum_number_of_blocks;
u32 number_of_allocated_blocks;
s8 created_contexts_array[GSL_DEVICE_MAX][GSL_CONTEXT_MAX];
};
/*
* prototypes
*/
/* allocated memory block tracking */
int add_memblock_to_allocated_list(struct file *fd,
gsl_memdesc_t *allocated_block);
int del_memblock_from_allocated_list(struct file *fd,
gsl_memdesc_t *freed_block);
int del_all_memblocks_from_allocated_list(struct file *fd);
/* created contexts tracking */
void init_created_contexts_array(s8 *array);
void add_device_context_to_array(struct file *fd,
gsl_deviceid_t device_id,
unsigned int context_id);
void del_device_context_from_array(struct file *fd,
gsl_deviceid_t device_id,
unsigned int context_id);
void del_all_devices_contexts(struct file *fd);
#endif // __GSL_KMOD_CLEANUP_H
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