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

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
......@@ -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
/*
* 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;
}
......@@ -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,
};
......
/*
* 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;
}
/*
* 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__ */
......@@ -62,4 +62,17 @@ struct cudbg_buffer {
u32 offset;
char *data;
};
struct cudbg_error {
int sys_err;
int sys_warn;
int app_err;
};
int cudbg_get_buff(struct cudbg_buffer *pdbg_buff, u32 size,
struct cudbg_buffer *pin_buff);
void cudbg_put_buff(struct cudbg_buffer *pin_buff,
struct cudbg_buffer *pdbg_buff);
void cudbg_update_buff(struct cudbg_buffer *pin_buff,
struct cudbg_buffer *pout_buff);
#endif /* __CUDBG_LIB_COMMON_H__ */
......@@ -18,9 +18,94 @@
#include "cxgb4.h"
#include "cxgb4_cudbg.h"
static const struct cxgb4_collect_entity cxgb4_collect_hw_dump[] = {
{ CUDBG_REG_DUMP, cudbg_collect_reg_dump },
};
static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
{
u32 len = 0;
switch (entity) {
case CUDBG_REG_DUMP:
switch (CHELSIO_CHIP_VERSION(adap->params.chip)) {
case CHELSIO_T4:
len = T4_REGMAP_SIZE;
break;
case CHELSIO_T5:
case CHELSIO_T6:
len = T5_REGMAP_SIZE;
break;
default:
break;
}
break;
default:
break;
}
return len;
}
u32 cxgb4_get_dump_length(struct adapter *adap, u32 flag)
{
return 0;
u32 i, entity;
u32 len = 0;
if (flag & CXGB4_ETH_DUMP_HW) {
for (i = 0; i < ARRAY_SIZE(cxgb4_collect_hw_dump); i++) {
entity = cxgb4_collect_hw_dump[i].entity;
len += cxgb4_get_entity_length(adap, entity);
}
}
return len;
}
static void cxgb4_cudbg_collect_entity(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
const struct cxgb4_collect_entity *e_arr,
u32 arr_size, void *buf, u32 *tot_size)
{
struct adapter *adap = pdbg_init->adap;
struct cudbg_error cudbg_err = { 0 };
struct cudbg_entity_hdr *entity_hdr;
u32 entity_size, i;
u32 total_size = 0;
int ret;
for (i = 0; i < arr_size; i++) {
const struct cxgb4_collect_entity *e = &e_arr[i];
/* Skip entities that won't fit in output buffer */
entity_size = cxgb4_get_entity_length(adap, e->entity);
if (entity_size >
pdbg_init->outbuf_size - *tot_size - total_size)
continue;
entity_hdr = cudbg_get_entity_hdr(buf, e->entity);
entity_hdr->entity_type = e->entity;
entity_hdr->start_offset = dbg_buff->offset;
memset(&cudbg_err, 0, sizeof(struct cudbg_error));
ret = e->collect_cb(pdbg_init, dbg_buff, &cudbg_err);
if (ret) {
entity_hdr->size = 0;
dbg_buff->offset = entity_hdr->start_offset;
} else {
cudbg_align_debug_buffer(dbg_buff, entity_hdr);
}
/* Log error and continue with next entity */
if (cudbg_err.sys_err)
ret = CUDBG_SYSTEM_ERROR;
entity_hdr->hdr_flags = ret;
entity_hdr->sys_err = cudbg_err.sys_err;
entity_hdr->sys_warn = cudbg_err.sys_warn;
total_size += entity_hdr->size;
}
*tot_size += total_size;
}
int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size,
......@@ -60,6 +145,13 @@ int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size,
dbg_buff.offset += min_size;
total_size = dbg_buff.offset;
if (flag & CXGB4_ETH_DUMP_HW)
cxgb4_cudbg_collect_entity(&cudbg_init, &dbg_buff,
cxgb4_collect_hw_dump,
ARRAY_SIZE(cxgb4_collect_hw_dump),
buf,
&total_size);
cudbg_hdr->data_len = total_size;
*buf_size = total_size;
return 0;
......
......@@ -20,9 +20,20 @@
#include "cudbg_if.h"
#include "cudbg_lib_common.h"
#include "cudbg_lib.h"
typedef int (*cudbg_collect_callback_t)(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
struct cudbg_error *cudbg_err);
struct cxgb4_collect_entity {
enum cudbg_dbg_entity_type entity;
cudbg_collect_callback_t collect_cb;
};
enum CXGB4_ETHTOOL_DUMP_FLAGS {
CXGB4_ETH_DUMP_NONE = ETH_FW_DUMP_DISABLE,
CXGB4_ETH_DUMP_HW = (1 << 1), /* various FW and HW dumps */
};
u32 cxgb4_get_dump_length(struct adapter *adap, u32 flag);
......
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