diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/t4_hw.c')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 006414758f65..c289ca1efc1b 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -9547,6 +9547,63 @@ int t4_set_vf_mac_acl(struct adapter *adapter, unsigned int vf, return t4_wr_mbox(adapter, adapter->mbox, &cmd, sizeof(cmd), &cmd); } +/** + * t4_read_pace_tbl - read the pace table + * @adap: the adapter + * @pace_vals: holds the returned values + * + * Returns the values of TP's pace table in microseconds. + */ +void t4_read_pace_tbl(struct adapter *adap, unsigned int pace_vals[NTX_SCHED]) +{ + unsigned int i, v; + + for (i = 0; i < NTX_SCHED; i++) { + t4_write_reg(adap, TP_PACE_TABLE_A, 0xffff0000 + i); + v = t4_read_reg(adap, TP_PACE_TABLE_A); + pace_vals[i] = dack_ticks_to_usec(adap, v); + } +} + +/** + * t4_get_tx_sched - get the configuration of a Tx HW traffic scheduler + * @adap: the adapter + * @sched: the scheduler index + * @kbps: the byte rate in Kbps + * @ipg: the interpacket delay in tenths of nanoseconds + * @sleep_ok: if true we may sleep while awaiting command completion + * + * Return the current configuration of a HW Tx scheduler. + */ +void t4_get_tx_sched(struct adapter *adap, unsigned int sched, + unsigned int *kbps, unsigned int *ipg, bool sleep_ok) +{ + unsigned int v, addr, bpt, cpt; + + if (kbps) { + addr = TP_TX_MOD_Q1_Q0_RATE_LIMIT_A - sched / 2; + t4_tp_tm_pio_read(adap, &v, 1, addr, sleep_ok); + if (sched & 1) + v >>= 16; + bpt = (v >> 8) & 0xff; + cpt = v & 0xff; + if (!cpt) { + *kbps = 0; /* scheduler disabled */ + } else { + v = (adap->params.vpd.cclk * 1000) / cpt; /* ticks/s */ + *kbps = (v * bpt) / 125; + } + } + if (ipg) { + addr = TP_TX_MOD_Q1_Q0_TIMER_SEPARATOR_A - sched / 2; + t4_tp_tm_pio_read(adap, &v, 1, addr, sleep_ok); + if (sched & 1) + v >>= 16; + v &= 0xffff; + *ipg = (10000 * v) / core_ticks_per_usec(adap); + } +} + int t4_sched_params(struct adapter *adapter, int type, int level, int mode, int rateunit, int ratemode, int channel, int class, int minrate, int maxrate, int weight, int pktsize) |