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cxgb4: implement ethtool dump data operations 

Implement operations to set/get dump data via ethtool.  Also add
template header that precedes dump data, which helps in decoding
and extracting the dump data.

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Rahul Lakkireddy 2017-10-13 18:48:13 +05:30 committed by David S. Miller
parent 4c7787ba3a
commit ad75b7d32f
8 changed files with 265 additions and 2 deletions
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2
drivers/net/ethernet/chelsio/cxgb4/Makefile
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@ -6,7 +6,7 @@ obj-$(CONFIG_CHELSIO_T4) += cxgb4.o
cxgb4-objs := cxgb4_main.o l2t.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o \
cxgb4_uld.o sched.o cxgb4_filter.o cxgb4_tc_u32.o \
cxgb4_ptp.o cxgb4_tc_flower.o
cxgb4_ptp.o cxgb4_tc_flower.o cxgb4_cudbg.o
cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o
cxgb4-$(CONFIG_CHELSIO_T4_FCOE) += cxgb4_fcoe.o
cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o

33
drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h 100644
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@ -0,0 +1,33 @@
/*
* 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_IF_H__
#define __CUDBG_IF_H__
#define CUDBG_MAJOR_VERSION 1
#define CUDBG_MINOR_VERSION 14
enum cudbg_dbg_entity_type {
CUDBG_MAX_ENTITY = 70,
};
struct cudbg_init {
struct adapter *adap; /* Pointer to adapter structure */
void *outbuf; /* Output buffer */
u32 outbuf_size; /* Output buffer size */
};
#endif /* __CUDBG_IF_H__ */

65
drivers/net/ethernet/chelsio/cxgb4/cudbg_lib_common.h 100644
View File

@ -0,0 +1,65 @@
/*
* 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_COMMON_H__
#define __CUDBG_LIB_COMMON_H__
#define CUDBG_SIGNATURE 67856866 /* CUDB in ascii */
enum cudbg_dump_type {
CUDBG_DUMP_TYPE_MINI = 1,
};
enum cudbg_compression_type {
CUDBG_COMPRESSION_NONE = 1,
};
struct cudbg_hdr {
u32 signature;
u32 hdr_len;
u16 major_ver;
u16 minor_ver;
u32 data_len;
u32 hdr_flags;
u16 max_entities;
u8 chip_ver;
u8 dump_type:3;
u8 reserved1:1;
u8 compress_type:4;
u32 reserved[8];
};
struct cudbg_entity_hdr {
u32 entity_type;
u32 start_offset;
u32 size;
int hdr_flags;
u32 sys_warn;
u32 sys_err;
u8 num_pad;
u8 flag; /* bit 0 is used to indicate ext data */
u8 reserved1[2];
u32 next_ext_offset; /* pointer to next extended entity meta data */
u32 reserved[5];
};
struct cudbg_buffer {
u32 size;
u32 offset;
char *data;
};
#endif /* __CUDBG_LIB_COMMON_H__ */

3
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -909,6 +909,9 @@ struct adapter {
/* TC flower offload */
DECLARE_HASHTABLE(flower_anymatch_tbl, 9);
struct timer_list flower_stats_timer;
/* Ethtool Dump */
struct ethtool_dump eth_dump;
};
/* Support for "sched-class" command to allow a TX Scheduling Class to be

73
drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c 100644
View File

@ -0,0 +1,73 @@
/*
* 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 "cxgb4_cudbg.h"
u32 cxgb4_get_dump_length(struct adapter *adap, u32 flag)
{
return 0;
}
int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size,
u32 flag)
{
struct cudbg_init cudbg_init = { 0 };
struct cudbg_buffer dbg_buff = { 0 };
u32 size, min_size, total_size = 0;
struct cudbg_hdr *cudbg_hdr;
size = *buf_size;
cudbg_init.adap = adap;
cudbg_init.outbuf = buf;
cudbg_init.outbuf_size = size;
dbg_buff.data = buf;
dbg_buff.size = size;
dbg_buff.offset = 0;
cudbg_hdr = (struct cudbg_hdr *)buf;
cudbg_hdr->signature = CUDBG_SIGNATURE;
cudbg_hdr->hdr_len = sizeof(struct cudbg_hdr);
cudbg_hdr->major_ver = CUDBG_MAJOR_VERSION;
cudbg_hdr->minor_ver = CUDBG_MINOR_VERSION;
cudbg_hdr->max_entities = CUDBG_MAX_ENTITY;
cudbg_hdr->chip_ver = adap->params.chip;
cudbg_hdr->dump_type = CUDBG_DUMP_TYPE_MINI;
cudbg_hdr->compress_type = CUDBG_COMPRESSION_NONE;
min_size = sizeof(struct cudbg_hdr) +
sizeof(struct cudbg_entity_hdr) *
cudbg_hdr->max_entities;
if (size < min_size)
return -ENOMEM;
dbg_buff.offset += min_size;
total_size = dbg_buff.offset;
cudbg_hdr->data_len = total_size;
*buf_size = total_size;
return 0;
}
void cxgb4_init_ethtool_dump(struct adapter *adapter)
{
adapter->eth_dump.flag = CXGB4_ETH_DUMP_NONE;
adapter->eth_dump.version = adapter->params.fw_vers;
adapter->eth_dump.len = 0;
}

32
drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.h 100644
View File

@ -0,0 +1,32 @@
/*
* 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 __CXGB4_CUDBG_H__
#define __CXGB4_CUDBG_H__
#include "cudbg_if.h"
#include "cudbg_lib_common.h"
enum CXGB4_ETHTOOL_DUMP_FLAGS {
CXGB4_ETH_DUMP_NONE = ETH_FW_DUMP_DISABLE,
};
u32 cxgb4_get_dump_length(struct adapter *adap, u32 flag);
int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size,
u32 flag);
void cxgb4_init_ethtool_dump(struct adapter *adapter);
#endif /* __CXGB4_CUDBG_H__ */

56
drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c
View File

@ -21,6 +21,7 @@
#include "cxgb4.h"
#include "t4_regs.h"
#include "t4fw_api.h"
#include "cxgb4_cudbg.h"
#define EEPROM_MAGIC 0x38E2F10C
@ -1374,6 +1375,56 @@ static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
return -EOPNOTSUPP;
}
static int set_dump(struct net_device *dev, struct ethtool_dump *eth_dump)
{
struct adapter *adapter = netdev2adap(dev);
u32 len = 0;
len = sizeof(struct cudbg_hdr) +
sizeof(struct cudbg_entity_hdr) * CUDBG_MAX_ENTITY;
len += cxgb4_get_dump_length(adapter, eth_dump->flag);
adapter->eth_dump.flag = eth_dump->flag;
adapter->eth_dump.len = len;
return 0;
}
static int get_dump_flag(struct net_device *dev, struct ethtool_dump *eth_dump)
{
struct adapter *adapter = netdev2adap(dev);
eth_dump->flag = adapter->eth_dump.flag;
eth_dump->len = adapter->eth_dump.len;
eth_dump->version = adapter->eth_dump.version;
return 0;
}
static int get_dump_data(struct net_device *dev, struct ethtool_dump *eth_dump,
void *buf)
{
struct adapter *adapter = netdev2adap(dev);
u32 len = 0;
int ret = 0;
if (adapter->eth_dump.flag == CXGB4_ETH_DUMP_NONE)
return -ENOENT;
len = sizeof(struct cudbg_hdr) +
sizeof(struct cudbg_entity_hdr) * CUDBG_MAX_ENTITY;
len += cxgb4_get_dump_length(adapter, adapter->eth_dump.flag);
if (eth_dump->len < len)
return -ENOMEM;
ret = cxgb4_cudbg_collect(adapter, buf, &len, adapter->eth_dump.flag);
if (ret)
return ret;
eth_dump->flag = adapter->eth_dump.flag;
eth_dump->len = len;
eth_dump->version = adapter->eth_dump.version;
return 0;
}
static const struct ethtool_ops cxgb_ethtool_ops = {
.get_link_ksettings = get_link_ksettings,
.set_link_ksettings = set_link_ksettings,
@ -1404,7 +1455,10 @@ static const struct ethtool_ops cxgb_ethtool_ops = {
.get_rxfh = get_rss_table,
.set_rxfh = set_rss_table,
.flash_device = set_flash,
.get_ts_info = get_ts_info
.get_ts_info = get_ts_info,
.set_dump = set_dump,
.get_dump_flag = get_dump_flag,
.get_dump_data = get_dump_data,
};
void cxgb4_set_ethtool_ops(struct net_device *netdev)

3
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -81,6 +81,7 @@
#include "cxgb4_tc_u32.h"
#include "cxgb4_tc_flower.h"
#include "cxgb4_ptp.h"
#include "cxgb4_cudbg.h"
char cxgb4_driver_name[] = KBUILD_MODNAME;
@ -5035,6 +5036,8 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
cxgb4_set_ethtool_ops(netdev);
}
cxgb4_init_ethtool_dump(adapter);
pci_set_drvdata(pdev, adapter);
if (adapter->flags & FW_OK) {