blob: 2fb0e3f7adf3d1f131fccbe107c8782b449b6c21 [file] [log] [blame]
/* Copyright (c) 2012-2016, 2018 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 DIAG_DCI_H
#define DIAG_DCI_H
#define MAX_DCI_CLIENTS 10
#define DCI_PKT_RSP_CODE 0x93
#define DCI_DELAYED_RSP_CODE 0x94
#define DCI_CONTROL_PKT_CODE 0x9A
#define EXT_HDR_CMD_CODE 0x98
#define LOG_CMD_CODE 0x10
#define EVENT_CMD_CODE 0x60
#define DCI_PKT_RSP_TYPE 0
#define DCI_LOG_TYPE -1
#define DCI_EVENT_TYPE -2
#define DCI_EXT_HDR_TYPE -3
#define SET_LOG_MASK 1
#define DISABLE_LOG_MASK 0
#define MAX_EVENT_SIZE 512
#define DCI_CLIENT_INDEX_INVALID -1
#define DCI_LOG_CON_MIN_LEN 14
#define DCI_EVENT_CON_MIN_LEN 16
#define EXT_HDR_LEN 8
#define EXT_HDR_VERSION 1
#define DCI_BUF_PRIMARY 1
#define DCI_BUF_SECONDARY 2
#define DCI_BUF_CMD 3
#ifdef CONFIG_DEBUG_FS
#define DIAG_DCI_DEBUG_CNT 100
#define DIAG_DCI_DEBUG_LEN 100
#endif
/* 16 log code categories, each has:
* 1 bytes equip id + 1 dirty byte + 512 byte max log mask
*/
#define DCI_LOG_MASK_SIZE (16*514)
#define DCI_EVENT_MASK_SIZE 512
#define DCI_MASK_STREAM 2
#define DCI_MAX_LOG_CODES 16
#define DCI_MAX_ITEMS_PER_LOG_CODE 512
#define DCI_LOG_MASK_CLEAN 0
#define DCI_LOG_MASK_DIRTY 1
#define MIN_DELAYED_RSP_LEN 12
/*
* Maximum data size that peripherals send = 8.5K log +
* DCI header + footer (6 bytes)
*/
#define MAX_DCI_PACKET_SZ 8710
extern unsigned int dci_max_reg;
extern unsigned int dci_max_clients;
#define DCI_LOCAL_PROC 0
#define DCI_REMOTE_BASE 1
#define DCI_MDM_PROC DCI_REMOTE_BASE
#define DCI_REMOTE_LAST (DCI_REMOTE_BASE + 1)
#ifndef CONFIG_DIAGFWD_BRIDGE_CODE
#define NUM_DCI_PROC 1
#else
#define NUM_DCI_PROC DCI_REMOTE_LAST
#endif
#define DCI_REMOTE_DATA 0
#define VALID_DCI_TOKEN(x) ((x >= 0 && x < NUM_DCI_PROC) ? 1 : 0)
#define BRIDGE_TO_TOKEN(x) (x - DIAGFWD_MDM_DCI + DCI_REMOTE_BASE)
#define TOKEN_TO_BRIDGE(x) (dci_ops_tbl[x].ctx)
#define DCI_MAGIC (0xAABB1122)
struct dci_pkt_req_t {
int uid;
int client_id;
} __packed;
struct dci_stream_req_t {
int type;
int client_id;
int set_flag;
int count;
} __packed;
struct dci_pkt_req_entry_t {
int client_id;
int uid;
int tag;
struct list_head track;
} __packed;
struct diag_dci_reg_tbl_t {
int client_id;
uint16_t notification_list;
int signal_type;
int token;
} __packed;
struct diag_dci_health_t {
int dropped_logs;
int dropped_events;
int received_logs;
int received_events;
};
struct diag_dci_partial_pkt_t {
unsigned char *data;
uint32_t total_len;
uint32_t read_len;
uint32_t remaining;
uint8_t processing;
} __packed;
struct diag_dci_buffer_t {
unsigned char *data;
unsigned int data_len;
struct mutex data_mutex;
uint8_t in_busy;
uint8_t buf_type;
int data_source;
int capacity;
uint8_t in_list;
struct list_head buf_track;
};
struct diag_dci_buf_peripheral_t {
struct diag_dci_buffer_t *buf_curr;
struct diag_dci_buffer_t *buf_primary;
struct diag_dci_buffer_t *buf_cmd;
struct diag_dci_health_t health;
struct mutex health_mutex;
struct mutex buf_mutex;
};
struct diag_dci_client_tbl {
int tgid;
struct diag_dci_reg_tbl_t client_info;
struct task_struct *client;
unsigned char *dci_log_mask;
unsigned char *dci_event_mask;
uint8_t real_time;
struct list_head track;
struct diag_dci_buf_peripheral_t *buffers;
uint8_t num_buffers;
uint8_t in_service;
struct list_head list_write_buf;
struct mutex write_buf_mutex;
};
struct diag_dci_health_stats {
struct diag_dci_health_t stats;
int reset_status;
};
struct diag_dci_health_stats_proc {
int client_id;
struct diag_dci_health_stats health;
int proc;
} __packed;
struct diag_dci_peripherals_t {
int proc;
uint16_t list;
} __packed;
/* This is used for querying DCI Log or Event Mask */
struct diag_log_event_stats {
int client_id;
uint16_t code;
int is_set;
} __packed;
struct diag_dci_pkt_rsp_header_t {
int type;
int length;
uint8_t delete_flag;
int uid;
} __packed;
struct diag_dci_pkt_header_t {
uint8_t start;
uint8_t version;
uint16_t len;
uint8_t pkt_code;
int tag;
} __packed;
struct diag_dci_header_t {
uint8_t start;
uint8_t version;
uint16_t length;
uint8_t cmd_code;
} __packed;
struct dci_ops_tbl_t {
int ctx;
int mempool;
unsigned char log_mask_composite[DCI_LOG_MASK_SIZE];
unsigned char event_mask_composite[DCI_EVENT_MASK_SIZE];
int (*send_log_mask)(int token);
int (*send_event_mask)(int token);
uint16_t peripheral_status;
} __packed;
struct dci_channel_status_t {
int id;
int open;
int retry_count;
struct timer_list wait_time;
struct work_struct handshake_work;
} __packed;
extern struct dci_ops_tbl_t dci_ops_tbl[NUM_DCI_PROC];
enum {
DIAG_DCI_NO_ERROR = 1001, /* No error */
DIAG_DCI_NO_REG, /* Could not register */
DIAG_DCI_NO_MEM, /* Failed memory allocation */
DIAG_DCI_NOT_SUPPORTED, /* This particular client is not supported */
DIAG_DCI_HUGE_PACKET, /* Request/Response Packet too huge */
DIAG_DCI_SEND_DATA_FAIL,/* writing to kernel or peripheral fails */
DIAG_DCI_TABLE_ERR /* Error dealing with registration tables */
};
#define DCI_HDR_SIZE \
((sizeof(struct diag_dci_pkt_header_t) > \
sizeof(struct diag_dci_header_t)) ? \
(sizeof(struct diag_dci_pkt_header_t) + 1) : \
(sizeof(struct diag_dci_header_t) + 1)) \
#define DCI_BUF_SIZE (uint32_t)(DIAG_MAX_REQ_SIZE + DCI_HDR_SIZE)
#define DCI_REQ_HDR_SIZE \
((sizeof(struct dci_pkt_req_t) > \
sizeof(struct dci_stream_req_t)) ? \
(sizeof(struct dci_pkt_req_t)) : \
(sizeof(struct dci_stream_req_t))) \
#define DCI_REQ_BUF_SIZE (uint32_t)(DIAG_MAX_REQ_SIZE + DCI_REQ_HDR_SIZE)
#ifdef CONFIG_DEBUG_FS
/* To collect debug information during each socket read */
struct diag_dci_data_info {
unsigned long iteration;
int data_size;
char time_stamp[DIAG_TS_SIZE];
uint8_t peripheral;
uint8_t ch_type;
uint8_t proc;
};
extern struct diag_dci_data_info *dci_traffic;
extern struct mutex dci_stat_mutex;
#endif
int diag_dci_init(void);
void diag_dci_channel_init(void);
void diag_dci_exit(void);
int diag_dci_register_client(struct diag_dci_reg_tbl_t *reg_entry);
int diag_dci_deinit_client(struct diag_dci_client_tbl *entry);
void diag_dci_channel_open_work(struct work_struct *work);
void diag_dci_notify_client(int peripheral_mask, int data, int proc);
void diag_dci_wakeup_clients(void);
void diag_process_apps_dci_read_data(int data_type, void *buf, int recd_bytes);
void diag_dci_process_peripheral_data(struct diagfwd_info *p_info, void *buf,
int recd_bytes);
int diag_process_dci_transaction(unsigned char *buf, int len);
void extract_dci_pkt_rsp(unsigned char *buf, int len, int data_source,
int token);
void extract_dci_ctrl_pkt(unsigned char *buf, int len, int token);
struct diag_dci_client_tbl *diag_dci_get_client_entry(int client_id);
struct diag_dci_client_tbl *dci_lookup_client_entry_pid(int tgid);
void diag_process_remote_dci_read_data(int index, void *buf, int recd_bytes);
int diag_dci_get_support_list(struct diag_dci_peripherals_t *support_list);
/* DCI Log streaming functions */
void update_dci_cumulative_log_mask(int offset, unsigned int byte_index,
uint8_t byte_mask, int token);
void diag_dci_invalidate_cumulative_log_mask(int token);
int diag_send_dci_log_mask(int token);
void extract_dci_log(unsigned char *buf, int len, int data_source, int token,
void *ext_hdr);
int diag_dci_clear_log_mask(int client_id);
int diag_dci_query_log_mask(struct diag_dci_client_tbl *entry,
uint16_t log_code);
/* DCI event streaming functions */
void update_dci_cumulative_event_mask(int offset, uint8_t byte_mask, int token);
void diag_dci_invalidate_cumulative_event_mask(int token);
int diag_send_dci_event_mask(int token);
void extract_dci_events(unsigned char *buf, int len, int data_source,
int token, void *ext_hdr);
/* DCI extended header handling functions */
void extract_dci_ext_pkt(unsigned char *buf, int len, int data_source,
int token);
int diag_dci_clear_event_mask(int client_id);
int diag_dci_query_event_mask(struct diag_dci_client_tbl *entry,
uint16_t event_id);
void diag_dci_record_traffic(int read_bytes, uint8_t ch_type,
uint8_t peripheral, uint8_t proc);
uint8_t diag_dci_get_cumulative_real_time(int token);
int diag_dci_set_real_time(struct diag_dci_client_tbl *entry,
uint8_t real_time);
int diag_dci_copy_health_stats(struct diag_dci_health_stats_proc *stats_proc);
int diag_dci_write_proc(uint8_t peripheral, int pkt_type, char *buf, int len);
void dci_drain_data(unsigned long data);
#ifdef CONFIG_DIAGFWD_BRIDGE_CODE
int diag_send_dci_log_mask_remote(int token);
int diag_send_dci_event_mask_remote(int token);
unsigned char *dci_get_buffer_from_bridge(int token);
int diag_dci_write_bridge(int token, unsigned char *buf, int len);
int diag_dci_write_done_bridge(int index, unsigned char *buf, int len);
int diag_dci_send_handshake_pkt(int index);
int diag_dci_init_remote(void);
#endif
#endif