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/* Copyright (c) 2010-2011, 2016-2017, 2019 The Linux Foundation.
* 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 version 2 and
* only 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.
*
*/
#ifndef __APR_TAL_H_
#define __APR_TAL_H_
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/uaccess.h>
/* APR Client IDs */
#define APR_CLIENT_AUDIO 0x0
#define APR_CLIENT_VOICE 0x1
#define APR_CLIENT_MAX 0x2
#define APR_DL_SMD 0
#define APR_DL_MAX 1
#define APR_DEST_MODEM 0
#define APR_DEST_QDSP6 1
#define APR_DEST_DSPS 3
#define APR_DEST_MAX 4
#if defined(CONFIG_MSM_QDSP6_APRV2_GLINK) || \
defined(CONFIG_MSM_QDSP6_APRV3_GLINK)
#define APR_MAX_BUF 512
#else
#define APR_MAX_BUF 8092
#endif
#define APR_DEFAULT_NUM_OF_INTENTS 20
#define APR_OPEN_TIMEOUT_MS 5000
enum {
/* If client sets the pkt_owner to APR_PKT_OWNER_DRIVER, APR
* driver will allocate a buffer, where the user packet is
* copied into, for each and every single Tx transmission.
* The buffer is thereafter passed to underlying link layer
* and freed upon the notification received from the link layer
* that the packet has been consumed.
*/
APR_PKT_OWNER_DRIVER,
/* If client sets the pkt_owner to APR_PKT_OWNER_CLIENT, APR
* will pass the user packet memory address directly to underlying
* link layer. In this case it is the client's responsibility to
* make sure the packet is intact until being notified that the
* packet has been consumed.
*/
APR_PKT_OWNER_CLIENT,
};
struct apr_pkt_priv {
/* This property is only applicable for APR over Glink.
* It is ignored in APR over SMD cases.
*/
uint8_t pkt_owner;
};
typedef void (*apr_svc_cb_fn)(void *buf, int len, void *priv);
struct apr_svc_ch_dev *apr_tal_open(uint32_t svc, uint32_t dest,
uint32_t dl, apr_svc_cb_fn func, void *priv);
int apr_tal_write(struct apr_svc_ch_dev *apr_ch, void *data,
struct apr_pkt_priv *pkt_priv, int len);
int apr_tal_close(struct apr_svc_ch_dev *apr_ch);
int apr_tal_rx_intents_config(struct apr_svc_ch_dev *apr_ch,
int num_of_intents, uint32_t size);
#if defined(CONFIG_MSM_QDSP6_APRV2_GLINK) || \
defined(CONFIG_MSM_QDSP6_APRV3_GLINK)
int apr_tal_start_rx_rt(struct apr_svc_ch_dev *apr_ch);
int apr_tal_end_rx_rt(struct apr_svc_ch_dev *apr_ch);
struct apr_svc_ch_dev {
void *handle;
spinlock_t w_lock;
spinlock_t r_lock;
struct mutex m_lock;
apr_svc_cb_fn func;
wait_queue_head_t wait;
void *priv;
unsigned channel_state;
bool if_remote_intent_ready;
};
#else
static inline int apr_tal_start_rx_rt(struct apr_svc_ch_dev *apr_ch)
{ return 0; }
static inline int apr_tal_end_rx_rt(struct apr_svc_ch_dev *apr_ch) { return 0; }
struct apr_svc_ch_dev {
struct smd_channel *ch;
spinlock_t lock;
spinlock_t w_lock;
struct mutex m_lock;
apr_svc_cb_fn func;
char data[APR_MAX_BUF];
wait_queue_head_t wait;
void *priv;
uint32_t smd_state;
wait_queue_head_t dest;
uint32_t dest_state;
};
#endif
#endif
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