diff options
Diffstat (limited to 'src/mslot_class.c')
| -rw-r--r-- | src/mslot_class.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/mslot_class.c b/src/mslot_class.c index 12d6d9e2..1c79a214 100644 --- a/src/mslot_class.c +++ b/src/mslot_class.c @@ -21,6 +21,7 @@ */ #include <mslot_class.h> +#include <gprs_debug.h> #include <osmocom/core/utils.h> #include <osmocom/core/logging.h> @@ -170,3 +171,44 @@ uint8_t mslot_class_get_type(uint8_t ms_cl) { return get_mslot_table(ms_cl)->type; } + +/*! Fill in RX mask table for a given MS Class + * + * \param[in] ms_cl MS Class pointer + * \param[in] num_tx Number of TX slots to consider + * \param[out] rx_mask RX mask table + */ +void mslot_fill_rx_mask(uint8_t mslot_class, uint8_t num_tx, uint8_t *rx_mask) +{ + static const char *digit[10] = { "0","1","2","3","4","5","6","7","8","9" }; + uint8_t Tx = mslot_class_get_tx(mslot_class), /* Max number of Tx slots */ + Sum = mslot_class_get_sum(mslot_class), /* Max number of Tx + Rx slots */ + Type = mslot_class_get_type(mslot_class), /* Type of Mobile */ + Tta = mslot_class_get_ta(mslot_class), /* Minimum number of slots */ + Ttb = mslot_class_get_tb(mslot_class), + /* FIXME: use actual TA offset for computation - make sure to adjust "1 + MS_TO" accordingly + see also "Offset required" bit in 3GPP TS 24.008 ยง10.5.1.7 */ + Tra = mslot_class_get_ra(mslot_class, 0), + Trb = mslot_class_get_rb(mslot_class, 0); + + if (num_tx == 1) /* it's enough to log this once per TX slot set iteration */ + LOGP(DRLCMAC, LOGL_DEBUG, + "Rx=%d Tx=%d Sum Rx+Tx=%s, Tta=%s Ttb=%d, Tra=%d Trb=%d, Type=%d\n", + mslot_class_get_rx(mslot_class), Tx, + (Sum == MS_NA) ? "N/A" : digit[Sum], + (Tta == MS_NA) ? "N/A" : digit[Tta], Ttb, Tra, Trb, Type); + + if (Type == 1) { + rx_mask[MASK_TT] = (0x100 >> OSMO_MAX(Ttb, Tta)) - 1; + rx_mask[MASK_TT] &= ~((1 << (Trb + num_tx)) - 1); + rx_mask[MASK_TR] = (0x100 >> Ttb) - 1; + rx_mask[MASK_TR] &= ~((1 << (OSMO_MAX(Trb, Tra) + num_tx)) - 1); + } else { + /* Class type 2 MS have independant RX and TX */ + rx_mask[MASK_TT] = 0xff; + rx_mask[MASK_TR] = 0xff; + } + + rx_mask[MASK_TT] = (rx_mask[MASK_TT] << 3) | (rx_mask[MASK_TT] >> 5); + rx_mask[MASK_TR] = (rx_mask[MASK_TR] << 3) | (rx_mask[MASK_TR] >> 5); +} |