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Commit 26fae93f authored by Hariprasad Shenai's avatar Hariprasad Shenai Committed by David S. Miller
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cxgb4: Add a debugfs entry to dump CIM MA logic analyzer logs 



Signed-off-by: default avatarHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9d92dafe

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

+1 −0
Original line number Diff line number Diff line
@@ -1337,6 +1337,7 @@ int t4_cim_read(struct adapter *adap, unsigned int addr, unsigned int n, 
int t4_cim_write(struct adapter *adap, unsigned int addr, unsigned int n,

		 const unsigned int *valp);

int t4_cim_read_la(struct adapter *adap, u32 *la_buf, unsigned int *wrptr);

void t4_cim_read_ma_la(struct adapter *adap, u32 *ma_req, u32 *ma_rsp);

void t4_read_cimq_cfg(struct adapter *adap, u16 *base, u16 *size, u16 *thres);

const char *t4_get_port_type_description(enum fw_port_type port_type);

void t4_get_port_stats(struct adapter *adap, int idx, struct port_stats *p);

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

+47 −0
Original line number Diff line number Diff line
@@ -182,6 +182,52 @@ static const struct file_operations cim_la_fops = { 
	.release = seq_release_private

};



static int cim_ma_la_show(struct seq_file *seq, void *v, int idx)

{

	const u32 *p = v;



	if (v == SEQ_START_TOKEN) {

		seq_puts(seq, "\n");

	} else if (idx < CIM_MALA_SIZE) {

		seq_printf(seq, "%02x%08x%08x%08x%08x\n",

			   p[4], p[3], p[2], p[1], p[0]);

	} else {

		if (idx == CIM_MALA_SIZE)

			seq_puts(seq,

				 "\nCnt ID Tag UE       Data       RDY VLD\n");

		seq_printf(seq, "%3u %2u  %x   %u %08x%08x  %u   %u\n",

			   (p[2] >> 10) & 0xff, (p[2] >> 7) & 7,

			   (p[2] >> 3) & 0xf, (p[2] >> 2) & 1,

			   (p[1] >> 2) | ((p[2] & 3) << 30),

			   (p[0] >> 2) | ((p[1] & 3) << 30), (p[0] >> 1) & 1,

			   p[0] & 1);

	}

	return 0;

}



static int cim_ma_la_open(struct inode *inode, struct file *file)

{

	struct seq_tab *p;

	struct adapter *adap = inode->i_private;



	p = seq_open_tab(file, 2 * CIM_MALA_SIZE, 5 * sizeof(u32), 1,

			 cim_ma_la_show);

	if (!p)

		return -ENOMEM;



	t4_cim_read_ma_la(adap, (u32 *)p->data,

			  (u32 *)p->data + 5 * CIM_MALA_SIZE);

	return 0;

}



static const struct file_operations cim_ma_la_fops = {

	.owner   = THIS_MODULE,

	.open    = cim_ma_la_open,

	.read    = seq_read,

	.llseek  = seq_lseek,

	.release = seq_release_private

};



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

{

	static const char * const qname[] = {
@@ -2128,6 +2174,7 @@ int t4_setup_debugfs(struct adapter *adap) 


	static struct t4_debugfs_entry t4_debugfs_files[] = {

		{ "cim_la", &cim_la_fops, S_IRUSR, 0 },

		{ "cim_ma_la", &cim_ma_la_fops, S_IRUSR, 0 },

		{ "cim_qcfg", &cim_qcfg_fops, S_IRUSR, 0 },

		{ "clk", &clk_debugfs_fops, S_IRUSR, 0 },

		{ "devlog", &devlog_fops, S_IRUSR, 0 },

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

+21 −0
Original line number Diff line number Diff line
@@ -2586,6 +2586,27 @@ int t4_fwcache(struct adapter *adap, enum fw_params_param_dev_fwcache op) 
	return t4_wr_mbox(adap, adap->mbox, &c, sizeof(c), NULL);

}



void t4_cim_read_ma_la(struct adapter *adap, u32 *ma_req, u32 *ma_rsp)

{

	u32 cfg;

	int i, j, idx;



	cfg = t4_read_reg(adap, CIM_DEBUGCFG_A);

	if (cfg & LADBGEN_F)

		t4_write_reg(adap, CIM_DEBUGCFG_A, cfg ^ LADBGEN_F);



	for (i = 0; i < CIM_MALA_SIZE; i++) {

		for (j = 0; j < 5; j++) {

			idx = 8 * i + j;

			t4_write_reg(adap, CIM_DEBUGCFG_A, POLADBGRDPTR_V(idx) |

				     PILADBGRDPTR_V(idx));

			*ma_req++ = t4_read_reg(adap, CIM_PO_LA_MADEBUGDATA_A);

			*ma_rsp++ = t4_read_reg(adap, CIM_PI_LA_MADEBUGDATA_A);

		}

	}

	t4_write_reg(adap, CIM_DEBUGCFG_A, cfg);

}



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

{

	unsigned int i, j;

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

+1 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ enum { 
	CIM_NUM_OBQ    = 6,     /* # of CIM OBQs */

	CIM_NUM_OBQ_T5 = 8,     /* # of CIM OBQs for T5 adapter */

	CIMLA_SIZE     = 2048,  /* # of 32-bit words in CIM LA */

	CIM_MALA_SIZE  = 64,    /* # of 160-bit words in CIM MA LA */

	CIM_IBQ_SIZE   = 128,   /* # of 128-bit words in a CIM IBQ */

	CIM_OBQ_SIZE   = 128,   /* # of 128-bit words in a CIM OBQ */

	TPLA_SIZE      = 128,   /* # of 64-bit words in TP LA */

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

+14 −0
Original line number Diff line number Diff line
@@ -2759,6 +2759,20 @@ 


#define CIM_IBQ_DBG_DATA_A 0x7b68

#define CIM_OBQ_DBG_DATA_A 0x7b6c

#define CIM_DEBUGCFG_A 0x7b70



#define POLADBGRDPTR_S		23

#define POLADBGRDPTR_V(x)	((x) << POLADBGRDPTR_S)



#define PILADBGRDPTR_S		14

#define PILADBGRDPTR_V(x)	((x) << PILADBGRDPTR_S)



#define LADBGEN_S	12

#define LADBGEN_V(x)	((x) << LADBGEN_S)

#define LADBGEN_F	LADBGEN_V(1U)



#define CIM_PO_LA_MADEBUGDATA_A	0x7b80

#define CIM_PI_LA_MADEBUGDATA_A	0x7b84



#define UPDBGLARDEN_S		1

#define UPDBGLARDEN_V(x)	((x) << UPDBGLARDEN_S)