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/*
* Support for Medifield PNW Camera Imaging ISP subsystem.
*
* Copyright (c) 2010 Intel Corporation. All Rights Reserved.
*
* Copyright (c) 2010 Silicon Hive www.siliconhive.com.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#ifndef __HMM_BO_DEV_H__
#define __HMM_BO_DEV_H__
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include "mmu/isp_mmu.h"
#include "hmm/hmm_common.h"
#include "hmm/hmm_vm.h"
#include "ia_css_types.h"
#define check_bodev_null_return(bdev, exp) \
check_null_return(bdev, exp, \
"NULL hmm_bo_device.\n")
#define check_bodev_null_return_void(bdev) \
check_null_return_void(bdev, \
"NULL hmm_bo_device.\n")
#define HMM_BO_DEVICE_INITED 0x1
#define HMM_BO_CACHE_SIZE 2
struct hmm_buffer_object;
struct hmm_bo_device {
/* isp_mmu provides lock itself */
struct isp_mmu mmu;
/* hmm_vm provides lock itself */
struct hmm_vm vaddr_space;
struct list_head free_bo_list;
struct list_head active_bo_list;
/* list lock is used to protect both of the buffer object lists */
spinlock_t list_lock;
#ifdef CONFIG_ION
struct ion_client *iclient;
#endif
int flag;
};
int hmm_bo_device_init(struct hmm_bo_device *bdev,
struct isp_mmu_client *mmu_driver,
unsigned int vaddr_start, unsigned int size);
/*
* clean up all hmm_bo_device related things.
*/
void hmm_bo_device_exit(struct hmm_bo_device *bdev);
/*
* whether the bo device is inited or not.
*/
int hmm_bo_device_inited(struct hmm_bo_device *bdev);
/*
* find the buffer object with virtual address vaddr.
* return NULL if no such buffer object found.
*/
struct hmm_buffer_object *hmm_bo_device_search_start(
struct hmm_bo_device *bdev, ia_css_ptr vaddr);
/*
* find the buffer object with virtual address vaddr.
* return NULL if no such buffer object found.
*/
struct hmm_buffer_object *hmm_bo_device_search_in_range(
struct hmm_bo_device *bdev, ia_css_ptr vaddr);
/*
* find the buffer object with kernel virtual address vaddr.
* return NULL if no such buffer object found.
*/
struct hmm_buffer_object *hmm_bo_device_search_vmap_start(
struct hmm_bo_device *bdev, const void *vaddr);
/*
* find a buffer object with pgnr pages from free_bo_list and
* activate it (remove from free_bo_list and add to
* active_bo_list)
*
* return NULL if no such buffer object found.
*/
struct hmm_buffer_object *hmm_bo_device_get_bo(
struct hmm_bo_device *bdev, unsigned int pgnr);
/*
* destroy all buffer objects in the free_bo_list.
*/
void hmm_bo_device_destroy_free_bo_list(struct hmm_bo_device *bdev);
/*
* destroy buffer object with start virtual address vaddr.
*/
void hmm_bo_device_destroy_free_bo_addr(struct hmm_bo_device *bdev,
ia_css_ptr vaddr);
/*
* destroy all buffer objects with pgnr pages.
*/
void hmm_bo_device_destroy_free_bo_size(struct hmm_bo_device *bdev,
unsigned int pgnr);
#endif
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