pxp_device.h
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/*
* Copyright (C) 2013-2014 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _PXP_DEVICE
#define _PXP_DEVICE
#include <linux/idr.h>
#include <linux/hash.h>
#include <uapi/linux/pxp_device.h>
struct pxp_irq_info {
wait_queue_head_t waitq;
atomic_t irq_pending;
int hist_status;
};
struct pxp_buffer_hash {
struct hlist_head *hash_table;
u32 order;
spinlock_t hash_lock;
};
struct pxp_buf_obj {
uint32_t handle;
uint32_t size;
uint32_t mem_type;
unsigned long offset;
void *virtual;
struct hlist_node item;
};
struct pxp_chan_obj {
uint32_t handle;
struct dma_chan *chan;
};
/* File private data */
struct pxp_file {
struct file *filp;
/* record allocated dma buffer */
struct idr buffer_idr;
spinlock_t buffer_lock;
/* record allocated dma channel */
struct idr channel_idr;
spinlock_t channel_lock;
};
#endif