1 files changed, 53 insertions, 0 deletions
diff --git a/include/osmocom/gsm/l1sap.h b/include/osmocom/gsm/l1sap.h
new file mode 100644
index 00000000..9547c325
--- /dev/null
+++ b/include/osmocom/gsm/l1sap.h
@@ -0,0 +1,53 @@
+#ifndef _OSMOCOM_L1SAP_H
+#define _OSMOCOM_L1SAP_H
+
+#include <osmocom/core/prim.h>
+
+/*! \brief LAPDm related primitives (L1<->L2 SAP) */
+enum osmo_ph_prim {
+	PRIM_PH_DATA,		/*!< \brief PH-DATA */
+	PRIM_PH_RACH,		/*!< \brief PH-RANDOM_ACCESS */
+	PRIM_PH_CONN,		/*!< \brief PH-CONNECT */
+	PRIM_PH_EMPTY_FRAME,	/*!< \brief PH-EMPTY_FRAME */
+	PRIM_PH_RTS,		/*!< \brief PH-RTS */
+};
+
+/*! \brief for PH-RANDOM_ACCESS.req */
+struct ph_rach_req_param {
+	uint8_t ra;		/*!< \brief Random Access */
+	uint8_t ta;		/*!< \brief Timing Advance */
+	uint8_t tx_power;	/*!< \brief Transmit Power */
+	uint8_t is_combined_ccch;/*!< \brief Are we using a combined CCCH? */
+	uint16_t offset;	/*!< \brief Timing Offset */
+};
+
+/*! \brief for PH-RANDOM_ACCESS.ind */
+struct ph_rach_ind_param {
+	uint8_t ra;		/*!< \brief Random Access */
+	uint8_t acc_delay;	/*!< \brief Delay in bit periods */
+	uint32_t fn;		/*!< \brief GSM Frame Number at time of RA */
+};
+
+/*! \brief for PH-[UNIT]DATA.{req,ind} */
+struct ph_data_param {
+	uint8_t link_id;	/*!< \brief Link Identifier (Like RSL) */
+	uint8_t chan_nr;	/*!< \brief Channel Number (Like RSL) */
+};
+
+/*! \brief for PH-CONN.ind */
+struct ph_conn_ind_param {
+	uint32_t fn;		/*!< \brief GSM Frame Number */
+};
+
+/*! \brief primitive header for LAPDm PH-SAP primitives */
+struct osmo_phsap_prim {
+	struct osmo_prim_hdr oph; /*!< \brief generic primitive header */
+	union {
+		struct ph_data_param data;
+		struct ph_rach_req_param rach_req;
+		struct ph_rach_ind_param rach_ind;
+		struct ph_conn_ind_param conn_ind;
+	} u;			/*!< \brief request-specific data */
+};
+
+#endif /* _OSMOCOM_L1SAP_H */