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cxgb4: display number of rx and tx pages free

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display free rx and tx page count in the meminfo of
an adapter.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ganesh Goudar 2018-07-18 17:36:12 +05:30 committed by David S. Miller
parent 98e60dce4d
commit fa145d5dfd
2 changed files with 28 additions and 6 deletions
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20
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
View File

@ -2858,6 +2858,7 @@ static int meminfo_show(struct seq_file *seq, void *v)
{
static const char * const memory[] = { "EDC0:", "EDC1:", "MC:",
"MC0:", "MC1:", "HMA:"};
unsigned int free_rx_cnt, free_tx_cnt;
struct adapter *adap = seq->private;
struct cudbg_meminfo meminfo;
int i, rc;
@ -2889,13 +2890,20 @@ static int meminfo_show(struct seq_file *seq, void *v)
mem_region_show(seq, "uP Extmem2:", meminfo.up_extmem2_lo,
meminfo.up_extmem2_hi);
seq_printf(seq, "\n%u Rx pages of size %uKiB for %u channels\n",
meminfo.rx_pages_data[0], meminfo.rx_pages_data[1],
meminfo.rx_pages_data[2]);
for (i = 0, free_rx_cnt = 0; i < 2; i++)
free_rx_cnt += FREERXPAGECOUNT_G
(t4_read_reg(adap, TP_FLM_FREE_RX_CNT_A));
seq_printf(seq, "\n%u Rx pages (%u free) of size %uKiB for %u channels\n",
meminfo.rx_pages_data[0], free_rx_cnt,
meminfo.rx_pages_data[1], meminfo.rx_pages_data[2]);
seq_printf(seq, "%u Tx pages of size %u%ciB for %u channels\n",
meminfo.tx_pages_data[0], meminfo.tx_pages_data[1],
meminfo.tx_pages_data[2], meminfo.tx_pages_data[3]);
for (i = 0, free_tx_cnt = 0; i < 4; i++)
free_tx_cnt += FREETXPAGECOUNT_G
(t4_read_reg(adap, TP_FLM_FREE_TX_CNT_A));
seq_printf(seq, "%u Tx pages (%u free) of size %u%ciB for %u channels\n",
meminfo.tx_pages_data[0], free_tx_cnt,
meminfo.tx_pages_data[1], meminfo.tx_pages_data[2],
meminfo.tx_pages_data[3]);
seq_printf(seq, "%u p-structs\n\n", meminfo.p_structs);

14
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h
View File

@ -1502,6 +1502,20 @@
#define TP_MIB_DATA_A 0x7e54
#define TP_INT_CAUSE_A 0x7e74
#define TP_FLM_FREE_RX_CNT_A 0x7e84
#define FREERXPAGECOUNT_S 0
#define FREERXPAGECOUNT_M 0x1fffffU
#define FREERXPAGECOUNT_V(x) ((x) << FREERXPAGECOUNT_S)
#define FREERXPAGECOUNT_G(x) (((x) >> FREERXPAGECOUNT_S) & FREERXPAGECOUNT_M)
#define TP_FLM_FREE_TX_CNT_A 0x7e88
#define FREETXPAGECOUNT_S 0
#define FREETXPAGECOUNT_M 0x1fffffU
#define FREETXPAGECOUNT_V(x) ((x) << FREETXPAGECOUNT_S)
#define FREETXPAGECOUNT_G(x) (((x) >> FREETXPAGECOUNT_S) & FREETXPAGECOUNT_M)
#define FLMTXFLSTEMPTY_S 30
#define FLMTXFLSTEMPTY_V(x) ((x) << FLMTXFLSTEMPTY_S)
#define FLMTXFLSTEMPTY_F FLMTXFLSTEMPTY_V(1U)