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Commit fa145d5d authored by Ganesh Goudar's avatar Ganesh Goudar Committed by David S. Miller
Browse files

cxgb4: display number of rx and tx pages free 



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

Signed-off-by: default avatarCasey Leedom <leedom@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 98e60dce

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

+15 −7
Original line number Diff line number Diff line
@@ -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]);



	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_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]);



	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);

drivers/net/ethernet/chelsio/cxgb4/t4_regs.h

+14 −0
Original line number Diff line number Diff line
@@ -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)