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cxgb4: Update pm_stats for T6 adapter family 

Updated pm_stats code to display input FIFO wait (index 5) and read
latency (index 7) counters for T6 adapters

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai 2015-12-23 22:47:12 +05:30 committed by David S. Miller
parent e894d720a5
commit 44588560d9
4 changed files with 35 additions and 4 deletions
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1
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -301,6 +301,7 @@ struct devlog_params {
/* Stores chip specific parameters */
struct arch_specific_params {
u8 nchan;
u8 pm_stats_cnt;
u16 mps_rplc_size;
u16 vfcount;
u32 sge_fl_db;

30
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
View File

@ -757,8 +757,8 @@ static int pm_stats_show(struct seq_file *seq, void *v)
};
int i;
u32 tx_cnt[PM_NSTATS], rx_cnt[PM_NSTATS];
u64 tx_cyc[PM_NSTATS], rx_cyc[PM_NSTATS];
u32 tx_cnt[T6_PM_NSTATS], rx_cnt[T6_PM_NSTATS];
u64 tx_cyc[T6_PM_NSTATS], rx_cyc[T6_PM_NSTATS];
struct adapter *adap = seq->private;
t4_pmtx_get_stats(adap, tx_cnt, tx_cyc);
@ -773,6 +773,32 @@ static int pm_stats_show(struct seq_file *seq, void *v)
for (i = 0; i < PM_NSTATS - 1; i++)
seq_printf(seq, "%-13s %10u %20llu\n",
rx_pm_stats[i], rx_cnt[i], rx_cyc[i]);
if (CHELSIO_CHIP_VERSION(adap->params.chip) > CHELSIO_T5) {
/* In T5 the granularity of the total wait is too fine.
* It is not useful as it reaches the max value too fast.
* Hence display this Input FIFO wait for T6 onwards.
*/
seq_printf(seq, "%13s %10s %20s\n",
" ", "Total wait", "Total Occupancy");
seq_printf(seq, "Tx FIFO wait %10u %20llu\n",
tx_cnt[i], tx_cyc[i]);
seq_printf(seq, "Rx FIFO wait %10u %20llu\n",
rx_cnt[i], rx_cyc[i]);
/* Skip index 6 as there is nothing useful ihere */
i += 2;
/* At index 7, a new stat for read latency (count, total wait)
* is added.
*/
seq_printf(seq, "%13s %10s %20s\n",
" ", "Reads", "Total wait");
seq_printf(seq, "Tx latency %10u %20llu\n",
tx_cnt[i], tx_cyc[i]);
seq_printf(seq, "Rx latency %10u %20llu\n",
rx_cnt[i], rx_cyc[i]);
}
return 0;
}

7
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
View File

@ -5254,7 +5254,7 @@ void t4_pmtx_get_stats(struct adapter *adap, u32 cnt[], u64 cycles[])
int i;
u32 data[2];
for (i = 0; i < PM_NSTATS; i++) {
for (i = 0; i < adap->params.arch.pm_stats_cnt; i++) {
t4_write_reg(adap, PM_TX_STAT_CONFIG_A, i + 1);
cnt[i] = t4_read_reg(adap, PM_TX_STAT_COUNT_A);
if (is_t4(adap->params.chip)) {
@ -5281,7 +5281,7 @@ void t4_pmrx_get_stats(struct adapter *adap, u32 cnt[], u64 cycles[])
int i;
u32 data[2];
for (i = 0; i < PM_NSTATS; i++) {
for (i = 0; i < adap->params.arch.pm_stats_cnt; i++) {
t4_write_reg(adap, PM_RX_STAT_CONFIG_A, i + 1);
cnt[i] = t4_read_reg(adap, PM_RX_STAT_COUNT_A);
if (is_t4(adap->params.chip)) {
@ -7060,6 +7060,7 @@ int t4_prep_adapter(struct adapter *adapter)
NUM_MPS_CLS_SRAM_L_INSTANCES;
adapter->params.arch.mps_rplc_size = 128;
adapter->params.arch.nchan = NCHAN;
adapter->params.arch.pm_stats_cnt = PM_NSTATS;
adapter->params.arch.vfcount = 128;
break;
case CHELSIO_T5:
@ -7069,6 +7070,7 @@ int t4_prep_adapter(struct adapter *adapter)
NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
adapter->params.arch.mps_rplc_size = 128;
adapter->params.arch.nchan = NCHAN;
adapter->params.arch.pm_stats_cnt = PM_NSTATS;
adapter->params.arch.vfcount = 128;
break;
case CHELSIO_T6:
@ -7078,6 +7080,7 @@ int t4_prep_adapter(struct adapter *adapter)
NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
adapter->params.arch.mps_rplc_size = 256;
adapter->params.arch.nchan = 2;
adapter->params.arch.pm_stats_cnt = T6_PM_NSTATS;
adapter->params.arch.vfcount = 256;
break;
default:

1
drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
View File

@ -48,6 +48,7 @@ enum {
NMTUS = 16, /* size of MTU table */
NCCTRL_WIN = 32, /* # of congestion control windows */
PM_NSTATS = 5, /* # of PM stats */
T6_PM_NSTATS = 7, /* # of PM stats in T6 */
MBOX_LEN = 64, /* mailbox size in bytes */
TRACE_LEN = 112, /* length of trace data and mask */
FILTER_OPT_LEN = 36, /* filter tuple width for optional components */