From 0aed654ac735749be31e4119336808596136aac3 Mon Sep 17 00:00:00 2001
From: Andreas Eversberg <jolly@eversberg.eu>
Date: Sat, 23 Jun 2012 10:33:16 +0200
Subject: Split of L1 interface to be used with OpenBTS or sysmo-BTS

The OpenBTS socket functions are moved from main to pcu_l1_if.cpp.

New sysmo_l1_if.cpp is introduced. It used special unix socket interface
to connect to sysmo-BTS. This is required to access CCCH/RACH and info
about cell layout. Traffic is also forwarded via this interface, but
it direct access of L1 baseband DSP will be added soon.

In order to handle ready-to-send requests above l1_if, the transmit
queue (for downlink blocks) is moved to gprs_rlcmac.cpp.

The TBF instance additionally holds TRX and TS info, but this is only
a hack currently. TBF instance requires more details about allocated
ressources in the future.
---
 src/pcu_l1_if.h | 57 ++++++++++++++++++++-------------------------------------
 1 file changed, 20 insertions(+), 37 deletions(-)

(limited to 'src/pcu_l1_if.h')

diff --git a/src/pcu_l1_if.h b/src/pcu_l1_if.h
index efe533e7..241f4943 100644
--- a/src/pcu_l1_if.h
+++ b/src/pcu_l1_if.h
@@ -20,58 +20,41 @@
 #ifndef PCU_L1_IF_H
 #define PCU_L1_IF_H
 
-
-#include <bitvector.h>
-#include <gsmL1prim.h>
-#include <sys/socket.h>
+#include <stdint.h>
 extern "C" {
 #include <osmocom/core/write_queue.h>
 #include <osmocom/core/socket.h>
 #include <osmocom/core/timer.h>
+#include <osmocom/core/bitvec.h>
 #include <osmocom/gsm/gsm_utils.h>
 }
 
-#define msgb_l1prim(msg)	((GsmL1_Prim_t *)(msg)->l1h)
-
-struct femtol1_hdl {
-	struct gsm_time gsm_time;
-	uint32_t hLayer1;			/* handle to the L1 instance in the DSP */
-	uint32_t dsp_trace_f;
-	uint16_t clk_cal;
-	struct llist_head wlc_list;
-
-	void *priv;			/* user reference */
-
-	struct osmo_timer_list alive_timer;
-	unsigned int alive_prim_cnt;
-
-	struct osmo_fd read_ofd;	/* osmo file descriptors */
-	struct osmo_wqueue write_q;
-
-	struct {
-		uint16_t arfcn;
-		uint8_t tn;
-		uint8_t tsc;
-		uint16_t ta;
-	} channel_info;
-
+struct pcu_l1if_ts {
+	uint8_t enable;
+	uint8_t tsc;
 };
 
-struct l1fwd_hdl {
-	struct sockaddr_storage remote_sa;
-	socklen_t remote_sa_len;
-
-	struct osmo_wqueue udp_wq;
+struct pcu_l1if_trx {
+	uint16_t arfcn;
+	struct pcu_l1if_ts ts[8];
+};
 
-	struct femtol1_hdl *fl1h;
+struct pcu_l1if_bts {
+	struct pcu_l1if_trx trx[8];
 };
 
-extern struct l1fwd_hdl *l1fh;
+extern struct pcu_l1if_bts pcu_l1if_bts;
 
 int get_current_fn();
+void set_current_fn(int fn);
 
-void pcu_l1if_tx(bitvec * block, GsmL1_Sapi_t sapi, int len = 23);
+void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, 
+        uint32_t fn, uint8_t block_nr);
+void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, 
+        uint32_t fn, uint8_t block_nr);
+void pcu_l1if_tx_agch(bitvec * block, int len);
 
-int pcu_l1if_handle_l1prim(struct femtol1_hdl *fl1h, struct msgb *msg);
+int pcu_l1if_open(void);
+void pcu_l1if_close(void);
 
 #endif // PCU_L1_IF_H
-- 
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