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Commit a7975a2f authored by Rahul Lakkireddy's avatar Rahul Lakkireddy Committed by David S. Miller
Browse files

cxgb4: collect register dump 



Add base to collect dump entities.  Collect register dump and
update template header accordingly.

Signed-off-by: default avatarRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ad75b7d3

drivers/net/ethernet/chelsio/cxgb4/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -6,7 +6,8 @@ obj-$(CONFIG_CHELSIO_T4) += cxgb4.o 


cxgb4-objs := cxgb4_main.o l2t.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o \

	      cxgb4_uld.o sched.o cxgb4_filter.o cxgb4_tc_u32.o \

	      cxgb4_ptp.o cxgb4_tc_flower.o cxgb4_cudbg.o

	      cxgb4_ptp.o cxgb4_tc_flower.o cxgb4_cudbg.o \

	      cudbg_common.o cudbg_lib.o

cxgb4-$(CONFIG_CHELSIO_T4_DCB) +=  cxgb4_dcb.o

cxgb4-$(CONFIG_CHELSIO_T4_FCOE) +=  cxgb4_fcoe.o

cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o

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

0 → 100644
+54 −0
Original line number Diff line number Diff line 
/*

 *  Copyright (C) 2017 Chelsio Communications.  All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify it

 *  under the terms and conditions of the GNU General Public License,

 *  version 2, as published by the Free Software Foundation.

 *

 *  This program is distributed in the hope it will be useful, but WITHOUT

 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 *  more details.

 *

 *  The full GNU General Public License is included in this distribution in

 *  the file called "COPYING".

 *

 */



#include "cxgb4.h"

#include "cudbg_if.h"

#include "cudbg_lib_common.h"



int cudbg_get_buff(struct cudbg_buffer *pdbg_buff, u32 size,

		   struct cudbg_buffer *pin_buff)

{

	u32 offset;



	offset = pdbg_buff->offset;

	if (offset + size > pdbg_buff->size)

		return CUDBG_STATUS_NO_MEM;



	pin_buff->data = (char *)pdbg_buff->data + offset;

	pin_buff->offset = offset;

	pin_buff->size = size;

	pdbg_buff->size -= size;

	return 0;

}



void cudbg_put_buff(struct cudbg_buffer *pin_buff,

		    struct cudbg_buffer *pdbg_buff)

{

	pdbg_buff->size += pin_buff->size;

	pin_buff->data = NULL;

	pin_buff->offset = 0;

	pin_buff->size = 0;

}



void cudbg_update_buff(struct cudbg_buffer *pin_buff,

		       struct cudbg_buffer *pout_buff)

{

	/* We already write to buffer provided by ethool, so just

	 * increment offset to next free space.

	 */

	pout_buff->offset += pin_buff->size;

}

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

+5 −0
Original line number Diff line number Diff line
@@ -18,10 +18,15 @@ 
#ifndef __CUDBG_IF_H__

#define __CUDBG_IF_H__



/* Error codes */

#define CUDBG_STATUS_NO_MEM -19

#define CUDBG_SYSTEM_ERROR -29



#define CUDBG_MAJOR_VERSION 1

#define CUDBG_MINOR_VERSION 14



enum cudbg_dbg_entity_type {

	CUDBG_REG_DUMP = 1,

	CUDBG_MAX_ENTITY = 70,

};

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

0 → 100644
+79 −0
Original line number Diff line number Diff line 
/*

 *  Copyright (C) 2017 Chelsio Communications.  All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify it

 *  under the terms and conditions of the GNU General Public License,

 *  version 2, as published by the Free Software Foundation.

 *

 *  This program is distributed in the hope it will be useful, but WITHOUT

 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 *  more details.

 *

 *  The full GNU General Public License is included in this distribution in

 *  the file called "COPYING".

 *

 */



#include "cxgb4.h"

#include "cudbg_if.h"

#include "cudbg_lib_common.h"

#include "cudbg_lib.h"



static void cudbg_write_and_release_buff(struct cudbg_buffer *pin_buff,

					 struct cudbg_buffer *dbg_buff)

{

	cudbg_update_buff(pin_buff, dbg_buff);

	cudbg_put_buff(pin_buff, dbg_buff);

}



/* This function will add additional padding bytes into debug_buffer to make it

 * 4 byte aligned.

 */

void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff,

			      struct cudbg_entity_hdr *entity_hdr)

{

	u8 zero_buf[4] = {0};

	u8 padding, remain;



	remain = (dbg_buff->offset - entity_hdr->start_offset) % 4;

	padding = 4 - remain;

	if (remain) {

		memcpy(((u8 *)dbg_buff->data) + dbg_buff->offset, &zero_buf,

		       padding);

		dbg_buff->offset += padding;

		entity_hdr->num_pad = padding;

	}

	entity_hdr->size = dbg_buff->offset - entity_hdr->start_offset;

}



struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i)

{

	struct cudbg_hdr *cudbg_hdr = (struct cudbg_hdr *)outbuf;



	return (struct cudbg_entity_hdr *)

	       ((char *)outbuf + cudbg_hdr->hdr_len +

		(sizeof(struct cudbg_entity_hdr) * (i - 1)));

}



int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init,

			   struct cudbg_buffer *dbg_buff,

			   struct cudbg_error *cudbg_err)

{

	struct adapter *padap = pdbg_init->adap;

	struct cudbg_buffer temp_buff = { 0 };

	u32 buf_size = 0;

	int rc = 0;



	if (is_t4(padap->params.chip))

		buf_size = T4_REGMAP_SIZE;

	else if (is_t5(padap->params.chip) || is_t6(padap->params.chip))

		buf_size = T5_REGMAP_SIZE;



	rc = cudbg_get_buff(dbg_buff, buf_size, &temp_buff);

	if (rc)

		return rc;

	t4_get_regs(padap, (void *)temp_buff.data, temp_buff.size);

	cudbg_write_and_release_buff(&temp_buff, dbg_buff);

	return rc;

}

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

0 → 100644
+28 −0
Original line number Diff line number Diff line 
/*

 *  Copyright (C) 2017 Chelsio Communications.  All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify it

 *  under the terms and conditions of the GNU General Public License,

 *  version 2, as published by the Free Software Foundation.

 *

 *  This program is distributed in the hope it will be useful, but WITHOUT

 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 *  more details.

 *

 *  The full GNU General Public License is included in this distribution in

 *  the file called "COPYING".

 *

 */



#ifndef __CUDBG_LIB_H__

#define __CUDBG_LIB_H__



int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init,

			   struct cudbg_buffer *dbg_buff,

			   struct cudbg_error *cudbg_err);



struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i);

void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff,

			      struct cudbg_entity_hdr *entity_hdr);

#endif /* __CUDBG_LIB_H__ */