Add support for NuRAN Wireless Litecell 1.5 BTS
Layer 1 compatibility with previous generation or NuRan GSM product,
therefore the support for the Litecell 1.5 uses its own sources instead
of using tons of ifdef/endif.
Max's amendments:
* make headers path configurable
* use configured TRX instead of hardcoded value
* split subdir-objects into separate commit
* cosmetic changes
Change-Id: Ib1287375cb10a889625bbac8528fa60deed23a2b
Fixes: SYS#2443
Reviewed-on: https://gerrit.osmocom.org/61
Tested-by: Jenkins Builder
Reviewed-by: Harald Welte <laforge@gnumonks.org>
diff --git a/src/osmo-bts-litecell15/lc15_l1_if.h b/src/osmo-bts-litecell15/lc15_l1_if.h
new file mode 100644
index 0000000..0589919
--- /dev/null
+++ b/src/osmo-bts-litecell15/lc15_l1_if.h
@@ -0,0 +1,104 @@
+/* Copyright (C) 2015 by Yves Godin <support@nuranwireless.com>
+ * based on:
+ * femto_l1_if.h
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef _LC15_L1_IF_H
+#define _LC15_L1_IF_H
+
+#include <osmocom/core/select.h>
+#include <osmocom/core/write_queue.h>
+#include <osmocom/core/gsmtap_util.h>
+#include <osmocom/gsm/gsm_utils.h>
+#include "lc15bts.h"
+
+enum {
+ MQ_SYS_READ,
+ MQ_L1_READ,
+ MQ_TCH_READ,
+ MQ_PDTCH_READ,
+ _NUM_MQ_READ
+};
+
+enum {
+ MQ_SYS_WRITE,
+ MQ_L1_WRITE,
+ MQ_TCH_WRITE,
+ MQ_PDTCH_WRITE,
+ _NUM_MQ_WRITE
+};
+
+struct lc15l1_hdl {
+ struct gsm_time gsm_time;
+ uint32_t hLayer1; /* handle to the L1 instance in the DSP */
+ uint32_t dsp_trace_f;
+ struct llist_head wlc_list;
+
+ struct gsmtap_inst *gsmtap;
+ uint32_t gsmtap_sapi_mask;
+
+ uint8_t trx_no;
+
+ struct osmo_timer_list alive_timer;
+ unsigned int alive_prim_cnt;
+
+ struct osmo_fd read_ofd[_NUM_MQ_READ]; /* osmo file descriptors */
+ struct osmo_wqueue write_q[_NUM_MQ_WRITE];
+
+ struct {
+ int trx_nr; /* <1-2> */
+ } hw_info;
+};
+
+#define msgb_l1prim(msg) ((GsmL1_Prim_t *)(msg)->l1h)
+#define msgb_sysprim(msg) ((Litecell15_Prim_t *)(msg)->l1h)
+
+typedef int l1if_compl_cb(struct msgb *l1_msg, void *data);
+
+/* send a request primitive to the L1 and schedule completion call-back */
+int l1if_req_compl(struct lc15l1_hdl *fl1h, struct msgb *msg,
+ int is_system_prim, l1if_compl_cb *cb, void *data);
+
+int l1if_reset(struct lc15l1_hdl *hdl);
+int l1if_activate_rf(struct lc15l1_hdl *hdl, int on);
+int l1if_set_trace_flags(struct lc15l1_hdl *hdl, uint32_t flags);
+int l1if_set_txpower(struct lc15l1_hdl *fl1h, float tx_power);
+
+struct msgb *l1p_msgb_alloc(void);
+struct msgb *sysp_msgb_alloc(void);
+
+uint32_t l1if_lchan_to_hLayer2(struct gsm_lchan *lchan);
+struct gsm_lchan *l1if_hLayer2_to_lchan(struct gsm_bts_trx *trx, uint32_t hLayer2);
+
+int l1if_handle_sysprim(struct lc15l1_hdl *fl1h, struct msgb *msg);
+int l1if_handle_l1prim(int wq, struct lc15l1_hdl *fl1h, struct msgb *msg);
+
+/* tch.c */
+int l1if_tch_rx(struct gsm_lchan *lchan, struct msgb *l1p_msg);
+int l1if_tch_fill(struct gsm_lchan *lchan, uint8_t *l1_buffer);
+struct msgb *gen_empty_tch_msg(struct gsm_lchan *lchan);
+
+/*
+ * The implementation of these functions is selected by either compiling and
+ * linking sysmo_l1_hw.c or sysmo_l1_fwd.c
+ */
+int l1if_transport_open(int q, struct lc15l1_hdl *hdl);
+int l1if_transport_close(int q, struct lc15l1_hdl *hdl);
+
+#endif /* _SYSMO_L1_IF_H */