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/* Copyright (c) 2015-2016, 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 DIAGFWD_PERIPHERAL_H
#define DIAGFWD_PERIPHERAL_H
#define PERIPHERAL_BUF_SZ 16384
#define MAX_PERIPHERAL_BUF_SZ 32768
#define MAX_PERIPHERAL_HDLC_BUF_SZ 65539
#define TRANSPORT_UNKNOWN -1
#define TRANSPORT_SOCKET 0
#define TRANSPORT_GLINK 1
#define NUM_TRANSPORT 2
#define NUM_WRITE_BUFFERS 2
#define PERIPHERAL_MASK(x) \
((x == PERIPHERAL_MODEM) ? DIAG_CON_MPSS : \
((x == PERIPHERAL_LPASS) ? DIAG_CON_LPASS : \
((x == PERIPHERAL_WCNSS) ? DIAG_CON_WCNSS : \
((x == PERIPHERAL_SENSORS) ? DIAG_CON_SENSORS : \
((x == PERIPHERAL_WDSP) ? DIAG_CON_WDSP : \
((x == PERIPHERAL_CDSP) ? DIAG_CON_CDSP : 0)))))) \
#define PERIPHERAL_STRING(x) \
((x == PERIPHERAL_MODEM) ? "MODEM" : \
((x == PERIPHERAL_LPASS) ? "LPASS" : \
((x == PERIPHERAL_WCNSS) ? "WCNSS" : \
((x == PERIPHERAL_SENSORS) ? "SENSORS" : \
((x == PERIPHERAL_WDSP) ? "WDSP" : \
((x == PERIPHERAL_CDSP) ? "CDSP" : "UNKNOWN")))))) \
struct diagfwd_buf_t {
unsigned char *data;
unsigned char *data_raw;
uint32_t len;
uint32_t len_raw;
atomic_t in_busy;
int ctxt;
};
struct diag_channel_ops {
void (*open)(struct diagfwd_info *fwd_info);
void (*close)(struct diagfwd_info *fwd_info);
void (*read_done)(struct diagfwd_info *fwd_info,
unsigned char *buf, int len);
};
struct diag_peripheral_ops {
void (*open)(void *ctxt);
void (*close)(void *ctxt);
int (*write)(void *ctxt, unsigned char *buf, int len);
int (*read)(void *ctxt, unsigned char *buf, int len);
void (*queue_read)(void *ctxt);
};
struct diagfwd_info {
uint8_t peripheral;
uint8_t type;
uint8_t transport;
uint8_t inited;
uint8_t ch_open;
atomic_t opened;
unsigned long read_bytes;
unsigned long write_bytes;
spinlock_t write_buf_lock;
struct mutex buf_mutex;
struct mutex data_mutex;
void *ctxt;
struct diagfwd_buf_t *buf_1;
struct diagfwd_buf_t *buf_2;
struct diagfwd_buf_t *buf_ptr[NUM_WRITE_BUFFERS];
struct diag_peripheral_ops *p_ops;
struct diag_channel_ops *c_ops;
};
extern struct diagfwd_info peripheral_info[NUM_TYPES][NUM_PERIPHERALS];
int diagfwd_peripheral_init(void);
void diagfwd_peripheral_exit(void);
void diagfwd_close_transport(uint8_t transport, uint8_t peripheral);
void diagfwd_open(uint8_t peripheral, uint8_t type);
void diagfwd_early_open(uint8_t peripheral);
void diagfwd_late_open(struct diagfwd_info *fwd_info);
void diagfwd_close(uint8_t peripheral, uint8_t type);
int diagfwd_register(uint8_t transport, uint8_t peripheral, uint8_t type,
void *ctxt, struct diag_peripheral_ops *ops,
struct diagfwd_info **fwd_ctxt);
int diagfwd_cntl_register(uint8_t transport, uint8_t peripheral, void *ctxt,
struct diag_peripheral_ops *ops,
struct diagfwd_info **fwd_ctxt);
void diagfwd_deregister(uint8_t peripheral, uint8_t type, void *ctxt);
int diagfwd_write(uint8_t peripheral, uint8_t type, void *buf, int len);
void diagfwd_write_done(uint8_t peripheral, uint8_t type, int ctxt);
void diagfwd_buffers_init(struct diagfwd_info *fwd_info);
/*
* The following functions are called by the channels
*/
int diagfwd_channel_open(struct diagfwd_info *fwd_info);
int diagfwd_channel_close(struct diagfwd_info *fwd_info);
void diagfwd_channel_read(struct diagfwd_info *fwd_info);
int diagfwd_channel_read_done(struct diagfwd_info *fwd_info,
unsigned char *buf, uint32_t len);
int diagfwd_write_buffer_done(struct diagfwd_info *fwd_info, const void *ptr);
#endif