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/* Copyright 2008-2013 Freescale Semiconductor, Inc.
*
* 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 Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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 WRP_DPA_STATS_H_
#define WRP_DPA_STATS_H_
/* Other includes */
#include "linux/fs.h"
#include <linux/fsl_dpa_stats.h>
#include <linux/compat.h>
#define DPA_STATS_CDEV "dpa_stats"
int wrp_dpa_stats_init(void);
int wrp_dpa_stats_exit(void);
int wrp_dpa_stats_open(struct inode *inode, struct file *filp);
int wrp_dpa_stats_release(struct inode *inode, struct file *filp);
ssize_t wrp_dpa_stats_read(struct file *file,
char *buf, size_t count, loff_t *off);
long wrp_dpa_stats_ioctl(struct file *filp, unsigned int cmd,
unsigned long args);
#ifdef CONFIG_COMPAT
long wrp_dpa_stats_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long args);
#endif
#define QUEUE_MAX_EVENTS 2048
struct dpa_stats_event_params {
int dpa_stats_id;
unsigned int storage_area_offset;
unsigned int cnts_written;
int bytes_written;
dpa_stats_request_cb request_done;
};
#ifdef CONFIG_COMPAT
struct compat_dpa_stats_event_params {
int dpa_stats_id;
unsigned int storage_area_offset;
unsigned int cnts_written;
int bytes_written;
compat_uptr_t request_done;
};
#endif
struct dpa_stats_event_queue {
struct list_head lh; /* Double linked list of events */
wait_queue_head_t wq; /* Waitqueue for reader processes */
atomic_t count; /* Number of events in the event queue */
};
struct dpa_stats_event {
struct dpa_stats_event_params params; /* Event data */
struct list_head lh; /* Event queue list head */
int *us_cnt_ids; /* Request array of counter ids from user-space */
int *ks_cnt_ids; /* Request array of counter ids from kernel-space */
unsigned int cnt_ids_len; /* Number of counter ids in array */
};
struct dpa_stats_async_req_ev {
dpa_stats_request_cb request_done; /* Request done callback */
unsigned int storage_area_offset; /* Storage offset for this request */
/* Pointers to other async requests in the current set */
struct list_head node;
int *us_cnt_ids; /* Request array of counter ids from US */
int *ks_cnt_ids; /* Request array of counter ids from KS */
unsigned int cnt_ids_len; /* Number of counter ids in array */
};
struct wrp_dpa_stats_cb {
void *us_mem; /* Pointer to user-space storage area memory */
void *k_mem; /* Pointer to kernel-space storage area memory */
struct dpa_stats_event_queue ev_queue; /* Event queue */
/* Group of asynchronous requests based on CRC collision */
struct list_head *async_req_group;
struct list_head async_req_pool; /* List of free async request nodes */
struct mutex async_req_lock; /* Mutex for operations on async reqs */
struct mutex event_queue_lock; /* Mutex for operations on async reqs */
};
#endif /* WRP_DPA_STATS_H_ */
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