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Commit 7864026b authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller
Browse files

cxgb4: Add debugfs entry to dump channel rate 



Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 19689609

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

+1 −0
Original line number Diff line number Diff line
@@ -1366,6 +1366,7 @@ void t4_load_mtus(struct adapter *adap, const unsigned short *mtus, 


void t4_ulprx_read_la(struct adapter *adap, u32 *la_buf);



void t4_get_chan_txrate(struct adapter *adap, u64 *nic_rate, u64 *ofld_rate);

void t4_mk_filtdelwr(unsigned int ftid, struct fw_filter_wr *wr, int qid);



void t4_wol_magic_enable(struct adapter *adap, unsigned int port,

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

+34 −0
Original line number Diff line number Diff line
@@ -752,6 +752,39 @@ static const struct file_operations pm_stats_debugfs_fops = { 
	.write   = pm_stats_clear

};



static int tx_rate_show(struct seq_file *seq, void *v)

{

	u64 nrate[NCHAN], orate[NCHAN];

	struct adapter *adap = seq->private;



	t4_get_chan_txrate(adap, nrate, orate);

	if (adap->params.arch.nchan == NCHAN) {

		seq_puts(seq, "              channel 0   channel 1   "

			 "channel 2   channel 3\n");

		seq_printf(seq, "NIC B/s:     %10llu  %10llu  %10llu  %10llu\n",

			   (unsigned long long)nrate[0],

			   (unsigned long long)nrate[1],

			   (unsigned long long)nrate[2],

			   (unsigned long long)nrate[3]);

		seq_printf(seq, "Offload B/s: %10llu  %10llu  %10llu  %10llu\n",

			   (unsigned long long)orate[0],

			   (unsigned long long)orate[1],

			   (unsigned long long)orate[2],

			   (unsigned long long)orate[3]);

	} else {

		seq_puts(seq, "              channel 0   channel 1\n");

		seq_printf(seq, "NIC B/s:     %10llu  %10llu\n",

			   (unsigned long long)nrate[0],

			   (unsigned long long)nrate[1]);

		seq_printf(seq, "Offload B/s: %10llu  %10llu\n",

			   (unsigned long long)orate[0],

			   (unsigned long long)orate[1]);

	}

	return 0;

}



DEFINE_SIMPLE_DEBUGFS_FILE(tx_rate);



static int cctrl_tbl_show(struct seq_file *seq, void *v)

{

	static const char * const dec_fac[] = {
@@ -2254,6 +2287,7 @@ int t4_setup_debugfs(struct adapter *adap) 
		{ "ulprx_la", &ulprx_la_fops, S_IRUSR, 0 },

		{ "sensors", &sensors_debugfs_fops, S_IRUSR, 0 },

		{ "pm_stats", &pm_stats_debugfs_fops, S_IRUSR, 0 },

		{ "tx_rate", &tx_rate_debugfs_fops, S_IRUSR, 0 },

		{ "cctrl", &cctrl_tbl_debugfs_fops, S_IRUSR, 0 },

#if IS_ENABLED(CONFIG_IPV6)

		{ "clip_tbl", &clip_tbl_debugfs_fops, S_IRUSR, 0 },

drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

+46 −0
Original line number Diff line number Diff line
@@ -4191,6 +4191,52 @@ void t4_load_mtus(struct adapter *adap, const unsigned short *mtus, 
	}

}



/* Calculates a rate in bytes/s given the number of 256-byte units per 4K core

 * clocks.  The formula is

 *

 * bytes/s = bytes256 * 256 * ClkFreq / 4096

 *

 * which is equivalent to

 *

 * bytes/s = 62.5 * bytes256 * ClkFreq_ms

 */

static u64 chan_rate(struct adapter *adap, unsigned int bytes256)

{

	u64 v = bytes256 * adap->params.vpd.cclk;



	return v * 62 + v / 2;

}



/**

 *	t4_get_chan_txrate - get the current per channel Tx rates

 *	@adap: the adapter

 *	@nic_rate: rates for NIC traffic

 *	@ofld_rate: rates for offloaded traffic

 *

 *	Return the current Tx rates in bytes/s for NIC and offloaded traffic

 *	for each channel.

 */

void t4_get_chan_txrate(struct adapter *adap, u64 *nic_rate, u64 *ofld_rate)

{

	u32 v;



	v = t4_read_reg(adap, TP_TX_TRATE_A);

	nic_rate[0] = chan_rate(adap, TNLRATE0_G(v));

	nic_rate[1] = chan_rate(adap, TNLRATE1_G(v));

	if (adap->params.arch.nchan == NCHAN) {

		nic_rate[2] = chan_rate(adap, TNLRATE2_G(v));

		nic_rate[3] = chan_rate(adap, TNLRATE3_G(v));

	}



	v = t4_read_reg(adap, TP_TX_ORATE_A);

	ofld_rate[0] = chan_rate(adap, OFDRATE0_G(v));

	ofld_rate[1] = chan_rate(adap, OFDRATE1_G(v));

	if (adap->params.arch.nchan == NCHAN) {

		ofld_rate[2] = chan_rate(adap, OFDRATE2_G(v));

		ofld_rate[3] = chan_rate(adap, OFDRATE3_G(v));

	}

}



/**

 *	t4_pmtx_get_stats - returns the HW stats from PMTX

 *	@adap: the adapter

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

+36 −0
Original line number Diff line number Diff line
@@ -1361,6 +1361,42 @@ 
#define FLMTXFLSTEMPTY_V(x) ((x) << FLMTXFLSTEMPTY_S)

#define FLMTXFLSTEMPTY_F    FLMTXFLSTEMPTY_V(1U)



#define TP_TX_ORATE_A 0x7ebc



#define OFDRATE3_S    24

#define OFDRATE3_M    0xffU

#define OFDRATE3_G(x) (((x) >> OFDRATE3_S) & OFDRATE3_M)



#define OFDRATE2_S    16

#define OFDRATE2_M    0xffU

#define OFDRATE2_G(x) (((x) >> OFDRATE2_S) & OFDRATE2_M)



#define OFDRATE1_S    8

#define OFDRATE1_M    0xffU

#define OFDRATE1_G(x) (((x) >> OFDRATE1_S) & OFDRATE1_M)



#define OFDRATE0_S    0

#define OFDRATE0_M    0xffU

#define OFDRATE0_G(x) (((x) >> OFDRATE0_S) & OFDRATE0_M)



#define TP_TX_TRATE_A 0x7ed0



#define TNLRATE3_S    24

#define TNLRATE3_M    0xffU

#define TNLRATE3_G(x) (((x) >> TNLRATE3_S) & TNLRATE3_M)



#define TNLRATE2_S    16

#define TNLRATE2_M    0xffU

#define TNLRATE2_G(x) (((x) >> TNLRATE2_S) & TNLRATE2_M)



#define TNLRATE1_S    8

#define TNLRATE1_M    0xffU

#define TNLRATE1_G(x) (((x) >> TNLRATE1_S) & TNLRATE1_M)



#define TNLRATE0_S    0

#define TNLRATE0_M    0xffU

#define TNLRATE0_G(x) (((x) >> TNLRATE0_S) & TNLRATE0_M)



#define TP_VLAN_PRI_MAP_A 0x140



#define FRAGMENTATION_S    9