diff options
author | Harald Welte <laforge@gnumonks.org> | 2010-02-18 16:46:36 +0100 |
---|---|---|
committer | Harald Welte <laforge@gnumonks.org> | 2010-02-18 16:46:36 +0100 |
commit | fbe7b94c9c65f2df74acd5dff7503c9833ec2579 (patch) | |
tree | 5f47a597f2f396662719c5a76ac6bf26eda69f6c /src/target/firmware/include/comm/sercomm.h |
Initial import of OsmocomBB into git repository
Diffstat (limited to 'src/target/firmware/include/comm/sercomm.h')
-rw-r--r-- | src/target/firmware/include/comm/sercomm.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/target/firmware/include/comm/sercomm.h b/src/target/firmware/include/comm/sercomm.h new file mode 100644 index 00000000..24ad865c --- /dev/null +++ b/src/target/firmware/include/comm/sercomm.h @@ -0,0 +1,57 @@ +#ifndef _SERCOMM_H +#define _SERCOMM_H + +/* SERCOMM layer on UART1 (modem UART) */ + +#ifdef HOST_BUILD +#include <osmocom/msgb.h> +#else +#include <comm/msgb.h> +#define SERCOMM_UART_NR 1 +#endif + +#define HDLC_FLAG 0x7E +#define HDLC_ESCAPE 0x7D + +#define HDLC_C_UI 0x03 +#define HDLC_C_P_BIT (1 << 4) +#define HDLC_C_F_BIT (1 << 4) + +/* a low sercomm_dlci means high priority. A high DLCI means low priority */ +enum sercomm_dlci { + SC_DLCI_HIGHEST = 0, + SC_DLCI_L1A_L23 = 5, + SC_DLCI_CONSOLE = 10, + _SC_DLCI_MAX +}; + +void sercomm_init(void); +int sercomm_initialized(void); + +/* User Interface: Tx */ + +/* user interface for transmitting messages for a given DLCI */ +void sercomm_sendmsg(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); + +/* 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); + +/* Driver Interface */ + +/* fetch one octet of to-be-transmitted serial data. returns 0 if no more data */ +int sercomm_drv_pull(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); + +static inline struct msgb *sercomm_alloc_msgb(unsigned int len) +{ + return msgb_alloc_headroom(len, 4, "sercomm_tx"); +} + +#endif /* _SERCOMM_H */ |