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osmo-bts/include/osmo-bts/l1sap.h

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Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
#ifndef L1SAP_H
#define L1SAP_H
/* timeslot and subslot from chan_nr */
#define L1SAP_CHAN2TS(chan_nr) (chan_nr & 7)
#define L1SAP_CHAN2SS_TCHH(chan_nr) ((chan_nr >> 3) & 1)
#define L1SAP_CHAN2SS_SDCCH4(chan_nr) ((chan_nr >> 3) & 3)
#define L1SAP_CHAN2SS_SDCCH8(chan_nr) ((chan_nr >> 3) & 7)
/* logical channel from chan_nr + link_id */
#define L1SAP_IS_LINK_SACCH(link_id) ((link_id & 0xC0) == 0x40)
#define L1SAP_IS_CHAN_TCHF(chan_nr) ((chan_nr & 0xf8) == 0x08)
#define L1SAP_IS_CHAN_TCHH(chan_nr) ((chan_nr & 0xf0) == 0x10)
#define L1SAP_IS_CHAN_SDCCH4(chan_nr) ((chan_nr & 0xe0) == 0x20)
#define L1SAP_IS_CHAN_SDCCH8(chan_nr) ((chan_nr & 0xc0) == 0x40)
#define L1SAP_IS_CHAN_BCCH(chan_nr) ((chan_nr & 0xf8) == 0x80)
#define L1SAP_IS_CHAN_RACH(chan_nr) ((chan_nr & 0xf8) == 0x88)
#define L1SAP_IS_CHAN_AGCH_PCH(chan_nr) ((chan_nr & 0xf8) == 0x90)
/* rach type from ra */
#define L1SAP_IS_PACKET_RACH(ra) ((ra & 0xf0) == 0x70)
/* CCCH block from frame number */
#define L1SAP_FN2CCCHBLOCK(fn) ((fn % 51) / 5 - 1)
/* PTCH layout from frame number */
#define L1SAP_FN2MACBLOCK(fn) ((fn % 52) / 4)
l1sap.h: fix wrong L1SAP_FN2PTCCHBLOCK calculation according to TS 45.002 Table 6 We have seen that the DSP time to time rejects PTCCH message from BTS due to invalid block number. As a result, we patched FN2PTCCHBLOCK calculation according TS 45.0002 Table 6. Change-Id: I8be1c8b9159c94788857c6de5440a418739f1212
2016-06-09 18:50:32 +00:00
#define L1SAP_FN2PTCCHBLOCK(fn) ((fn / 104) & 3)
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
#define L1SAP_IS_PTCCH(fn) ((fn % 52) == 12)
/* subslot from any chan_nr */
static inline uint8_t l1sap_chan2ss(uint8_t chan_nr)
{
if (L1SAP_IS_CHAN_SDCCH8(chan_nr))
return L1SAP_CHAN2SS_SDCCH8(chan_nr);
if (L1SAP_IS_CHAN_SDCCH4(chan_nr))
return L1SAP_CHAN2SS_SDCCH4(chan_nr);
if (L1SAP_IS_CHAN_TCHH(chan_nr))
return L1SAP_CHAN2SS_TCHH(chan_nr);
return 0;
}
Make get_lchan_by_chan_nr globally available * Remove static qualifier * Remove duplicated code - use generic function instead Change-Id: I37a312648771f58d3087471083cfcebbd97ccf1d
2016-06-23 13:39:31 +00:00
struct gsm_lchan *get_lchan_by_chan_nr(struct gsm_bts_trx *trx,
unsigned int chan_nr);
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
/* allocate a msgb containing a osmo_phsap_prim + optional l2 data */
struct msgb *l1sap_msgb_alloc(unsigned int l2_len);
/* any L1 prim received from bts model */
int l1sap_up(struct gsm_bts_trx *trx, struct osmo_phsap_prim *l1sap);
/* pcu (socket interface) sends us a data request primitive */
int l1sap_pdch_req(struct gsm_bts_trx_ts *ts, int is_ptcch, uint32_t fn,
uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len);
/* call-back function for incoming RTP */
void l1sap_rtp_rx_cb(struct osmo_rtp_socket *rs, const uint8_t *rtp_pl,
DTX: check Marker bit to send ONSET to L1 If Marker bit is set than it's a talkspurt which we have to explicitly indicate to L1 by first sending ONSET message and than actual voice data in a separate message. This change affect sysmobts and LC15 hw. Change-Id: I88c41568bcb0d82699f617adc4ad192603dd1bb6 Related: OS#1750
2016-09-17 12:15:03 +00:00
unsigned int rtp_pl_len, bool marker);
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
/* channel control */
Move chan act/rel/modify from bts_model to PH-/MPH-/TCH-SAP interface This part replaces channel activation/deactivation/modification routines by MPH_INFO messages.
2013-09-01 07:19:45 +00:00
int l1sap_chan_act(struct gsm_bts_trx *trx, uint8_t chan_nr, struct tlv_parsed *tp);
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
int l1sap_chan_rel(struct gsm_bts_trx *trx, uint8_t chan_nr);
int l1sap_chan_deact_sacch(struct gsm_bts_trx *trx, uint8_t chan_nr);
int l1sap_chan_modify(struct gsm_bts_trx *trx, uint8_t chan_nr);
extern const struct value_string gsmtap_sapi_names[];
extern struct gsmtap_inst *gsmtap;
extern uint32_t gsmtap_sapi_mask;
extern uint8_t gsmtap_sapi_acch;
Move copy-pasted code into common part Related: OS#1750 Change-Id: Ic4342eaf7e32a0e9a5f2b16dd196a1f5f03152a9
2016-06-17 11:10:38 +00:00
int add_l1sap_header(struct gsm_bts_trx *trx, struct msgb *rmsg,
struct gsm_lchan *lchan, uint8_t chan_nr, uint32_t fn);
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
#define msgb_l1sap_prim(msg) ((struct osmo_phsap_prim *)(msg)->l1h)
l1sap: Port code to new ciphering handling ... introduced in 2cc37035d73191b71b9ba9c0d559a0da6a5f35e5
2014-08-27 20:13:18 +00:00
int bts_check_for_first_ciphrd(struct gsm_lchan *lchan,
uint8_t *data, int len);
Add header file of PH-/MPH-/TCH-SAP interface to common part of osmo-bts Instead of handling primitives directly at layer 1 specific code, osmo-bts handles primitives at common code. When all primitive are moved, the l1sap interface will: - receive PH-DATA indications and forward them to layer 2. - check for RF link loss and notify BSC. - receive TCH indications and forward them via RTP. - receive PH-RTS indications and send PH-DATA requests with content according to its logical channel. - receive TCH-RTS indications and send TCH requests with content received via RTP or loopback from TCH indications. - send MPH-INFO requests to activate, deactivate and modify logical channels and handle their confirms. - receive MPH-INFO indications with measurements from tranceiver. - forward received and transmitted PH-DATA to GSMTAP.
2013-07-29 07:37:07 +00:00
#endif /* L1SAP_H */