diff options
Diffstat (limited to 'include/osmocom')
| -rw-r--r-- | include/osmocom/core/sercomm.h | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/include/osmocom/core/sercomm.h b/include/osmocom/core/sercomm.h index 21f715ba..b751bcd6 100644 --- a/include/osmocom/core/sercomm.h +++ b/include/osmocom/core/sercomm.h @@ -21,37 +21,62 @@ enum sercomm_dlci { _SC_DLCI_MAX }; +struct sercomm_inst; +typedef void (*dlci_cb_t)(struct sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg); + +struct sercomm_inst { + int initialized; + int uart_id; + + /* transmit side */ + struct { + struct llist_head dlci_queues[_SC_DLCI_MAX]; + struct msgb *msg; + int state; + uint8_t *next_char; + } tx; + + /* receive side */ + struct { + dlci_cb_t dlci_handler[_SC_DLCI_MAX]; + struct msgb *msg; + int state; + uint8_t dlci; + uint8_t ctrl; + } rx; +}; + + #ifndef HOST_BUILD #include <uart.h> /* helper functions for target */ -void sercomm_bind_uart(int uart); -int sercomm_get_uart(void); -void sercomm_change_speed(enum uart_baudrate bdrt); +void sercomm_bind_uart(struct sercomm_inst *sercomm, int uart); +int sercomm_get_uart(struct sercomm_inst *sercomm); +void sercomm_change_speed(struct sercomm_inst *sercomm, enum uart_baudrate bdrt); #endif -void sercomm_init(void); -int sercomm_initialized(void); +void sercomm_init(struct sercomm_inst *sercomm); +int sercomm_initialized(struct sercomm_inst *sercomm); /* User Interface: Tx */ /* user interface for transmitting messages for a given DLCI */ -void sercomm_sendmsg(uint8_t dlci, struct msgb *msg); +void sercomm_sendmsg(struct sercomm_inst *sercomm, uint8_t dlci, struct msgb *msg); /* how deep is the Tx queue for a given DLCI */ -unsigned int sercomm_tx_queue_depth(uint8_t dlci); +unsigned int sercomm_tx_queue_depth(struct sercomm_inst *sercomm, uint8_t dlci); /* User Interface: Rx */ /* receiving messages for a given DLCI */ -typedef void (*dlci_cb_t)(uint8_t dlci, struct msgb *msg); -int sercomm_register_rx_cb(uint8_t dlci, dlci_cb_t cb); +int sercomm_register_rx_cb(struct sercomm_inst *sercomm, uint8_t dlci, dlci_cb_t cb); /* Driver Interface */ /* fetch one octet of to-be-transmitted serial data. returns 0 if no more data */ -int sercomm_drv_pull(uint8_t *ch); +int sercomm_drv_pull(struct sercomm_inst *sercomm, uint8_t *ch); /* the driver has received one byte, pass it into sercomm layer. returns 1 in case of success, 0 in case of unrecognized char */ -int sercomm_drv_rx_char(uint8_t ch); +int sercomm_drv_rx_char(struct sercomm_inst *sercomm, uint8_t ch); static inline struct msgb *sercomm_alloc_msgb(unsigned int len) { |