TRX: split scheduler in generic part and backend part

the backend is performing the actual encoding and decoding functions,
while the generic part constsits of the TDMA structures and generating
the RTS.ind

1 files changed, 79 insertions, 0 deletions

diff --git a/src/osmo-bts-trx/scheduler_backend.h b/src/osmo-bts-trx/scheduler_backend.h
new file mode 100644
index 00000000..ea3e620f
--- /dev/null
+++ b/src/osmo-bts-trx/scheduler_backend.h
@@ -0,0 +1,79 @@
+#pragma once
+
+typedef int trx_sched_rts_func(struct l1sched_trx *l1t, uint8_t tn,
+			       uint32_t fn, enum trx_chan_type chan);
+
+typedef ubit_t *trx_sched_dl_func(struct l1sched_trx *l1t, uint8_t tn,
+				  uint32_t fn, enum trx_chan_type chan,
+				  uint8_t bid);
+
+typedef int trx_sched_ul_func(struct l1sched_trx *l1t, uint8_t tn,
+			      uint32_t fn, enum trx_chan_type chan,
+			      uint8_t bid, sbit_t *bits, int8_t rssi,
+			      float toa);
+
+struct trx_chan_desc {
+	/*! \brief Is this on a PDCH (PS) ? */
+	int			pdch;
+	/*! \brief TRX Channel Type */
+	enum trx_chan_type	chan;
+	/*! \brief Channel Number (like in RSL) */
+	uint8_t			chan_nr;
+	/*! \brief Link ID (like in RSL) */
+	uint8_t			link_id;
+	/*! \brief Human-readable name */
+	const char		*name;
+	/*! \brief function to call when we want to generate RTS.req to L2 */
+	trx_sched_rts_func	*rts_fn;
+	/*! \brief function to call when DATA.req received from L2 */
+	trx_sched_dl_func	*dl_fn;
+	/*! \brief function to call when burst received from PHY */
+	trx_sched_ul_func	*ul_fn;
+	/*! \breif is this channel automatically active at start? */
+	int			auto_active;
+};
+extern const struct trx_chan_desc trx_chan_desc[_TRX_CHAN_MAX];
+
+extern const ubit_t _sched_tsc[8][26];
+const ubit_t _sched_fcch_burst[148];
+const ubit_t _sched_sch_train[64];
+
+struct msgb *_sched_dequeue_prim(struct l1sched_trx *l1t, int8_t tn, uint32_t fn,
+				 enum trx_chan_type chan);
+
+int _sched_compose_ph_data_ind(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+				enum trx_chan_type chan, uint8_t *l2, uint8_t l2_len, float rssi);
+
+int _sched_compose_tch_ind(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+		    enum trx_chan_type chan, uint8_t *tch, uint8_t tch_len);
+
+ubit_t *tx_idle_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_fcch_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_sch_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_data_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_pdtch_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_tchf_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+ubit_t *tx_tchh_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid);
+int rx_rach_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid, sbit_t *bits, int8_t rssi,
+	float toa);
+int rx_data_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid, sbit_t *bits, int8_t rssi,
+	float toa);
+int rx_pdtch_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid, sbit_t *bits, int8_t rssi,
+	float toa);
+int rx_tchf_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid, sbit_t *bits, int8_t rssi,
+	float toa);
+int rx_tchh_fn(struct l1sched_trx *l1t, uint8_t tn, uint32_t fn,
+	enum trx_chan_type chan, uint8_t bid, sbit_t *bits, int8_t rssi,
+	float toa);
+