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ath10k: refactor firmware crashdump code to coredump.c

Browse Source 
In preparation to add RAM dump support. No functional changes, only moving code
and renaming function names.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Kalle Valo 2017-12-22 15:38:43 +02:00
parent d333bdd9b0
commit f25b9f285a
7 changed files with 291 additions and 240 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/ath10k/Makefile
View File

@ -21,6 +21,7 @@ ath10k_core-$(CONFIG_ATH10K_TRACING) += trace.o
ath10k_core-$(CONFIG_THERMAL) += thermal.o
ath10k_core-$(CONFIG_MAC80211_DEBUGFS) += debugfs_sta.o
ath10k_core-$(CONFIG_PM) += wow.o
ath10k_core-$(CONFIG_ATH10K_DEBUGFS) += coredump.o
obj-$(CONFIG_ATH10K_PCI) += ath10k_pci.o
ath10k_pci-y += pci.o \

3
drivers/net/wireless/ath/ath10k/core.c
View File

@ -32,6 +32,7 @@
#include "htt.h"
#include "testmode.h"
#include "wmi-ops.h"
#include "coredump.h"
unsigned int ath10k_debug_mask;
static unsigned int ath10k_cryptmode_param;
@ -1864,7 +1865,7 @@ static void ath10k_core_restart(struct work_struct *work)
mutex_unlock(&ar->conf_mutex);
ret = ath10k_debug_fw_devcoredump(ar);
ret = ath10k_coredump_submit(ar);
if (ret)
ath10k_warn(ar, "failed to send firmware crash dump via devcoredump: %d",
ret);

165
drivers/net/wireless/ath/ath10k/coredump.c Normal file
View File

@ -0,0 +1,165 @@
/*
* Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "coredump.h"
#include <linux/devcoredump.h>
#include <linux/utsname.h>
#include "debug.h"
#ifdef CONFIG_DEV_COREDUMP
struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar)
{
struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
lockdep_assert_held(&ar->data_lock);
crash_data->crashed_since_read = true;
guid_gen(&crash_data->guid);
ktime_get_real_ts64(&crash_data->timestamp);
return crash_data;
}
EXPORT_SYMBOL(ath10k_coredump_new);
static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar,
bool mark_read)
{
struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
struct ath10k_ce_crash_hdr *ce_hdr;
struct ath10k_dump_file_data *dump_data;
struct ath10k_tlv_dump_data *dump_tlv;
size_t hdr_len = sizeof(*dump_data);
size_t len, sofar = 0;
unsigned char *buf;
len = hdr_len;
len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
len += sizeof(*dump_tlv) + sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]);
sofar += hdr_len;
/* This is going to get big when we start dumping FW RAM and such,
* so go ahead and use vmalloc.
*/
buf = vzalloc(len);
if (!buf)
return NULL;
spin_lock_bh(&ar->data_lock);
if (!crash_data->crashed_since_read) {
spin_unlock_bh(&ar->data_lock);
vfree(buf);
return NULL;
}
dump_data = (struct ath10k_dump_file_data *)(buf);
strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
sizeof(dump_data->df_magic));
dump_data->len = cpu_to_le32(len);
dump_data->version = cpu_to_le32(ATH10K_FW_CRASH_DUMP_VERSION);
guid_copy(&dump_data->guid, &crash_data->guid);
dump_data->chip_id = cpu_to_le32(ar->chip_id);
dump_data->bus_type = cpu_to_le32(0);
dump_data->target_version = cpu_to_le32(ar->target_version);
dump_data->fw_version_major = cpu_to_le32(ar->fw_version_major);
dump_data->fw_version_minor = cpu_to_le32(ar->fw_version_minor);
dump_data->fw_version_release = cpu_to_le32(ar->fw_version_release);
dump_data->fw_version_build = cpu_to_le32(ar->fw_version_build);
dump_data->phy_capability = cpu_to_le32(ar->phy_capability);
dump_data->hw_min_tx_power = cpu_to_le32(ar->hw_min_tx_power);
dump_data->hw_max_tx_power = cpu_to_le32(ar->hw_max_tx_power);
dump_data->ht_cap_info = cpu_to_le32(ar->ht_cap_info);
dump_data->vht_cap_info = cpu_to_le32(ar->vht_cap_info);
dump_data->num_rf_chains = cpu_to_le32(ar->num_rf_chains);
strlcpy(dump_data->fw_ver, ar->hw->wiphy->fw_version,
sizeof(dump_data->fw_ver));
dump_data->kernel_ver_code = 0;
strlcpy(dump_data->kernel_ver, init_utsname()->release,
sizeof(dump_data->kernel_ver));
dump_data->tv_sec = cpu_to_le64(crash_data->timestamp.tv_sec);
dump_data->tv_nsec = cpu_to_le64(crash_data->timestamp.tv_nsec);
/* Gather crash-dump */
dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_REGISTERS);
dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->registers));
memcpy(dump_tlv->tlv_data, &crash_data->registers,
sizeof(crash_data->registers));
sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_CE_DATA);
dump_tlv->tlv_len = cpu_to_le32(sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]));
ce_hdr = (struct ath10k_ce_crash_hdr *)(dump_tlv->tlv_data);
ce_hdr->ce_count = cpu_to_le32(CE_COUNT);
memset(ce_hdr->reserved, 0, sizeof(ce_hdr->reserved));
memcpy(ce_hdr->entries, crash_data->ce_crash_data,
CE_COUNT * sizeof(ce_hdr->entries[0]));
sofar += sizeof(*dump_tlv) + sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]);
ar->debug.fw_crash_data->crashed_since_read = !mark_read;
spin_unlock_bh(&ar->data_lock);
return dump_data;
}
int ath10k_coredump_submit(struct ath10k *ar)
{
struct ath10k_dump_file_data *dump;
void *dump_ptr;
u32 dump_len;
/* To keep the dump file available also for debugfs don't mark the
* file read, only debugfs should do that.
*/
dump = ath10k_coredump_build(ar, false);
if (!dump) {
ath10k_warn(ar, "no crash dump data found for devcoredump");
return -ENODATA;
}
/* Make a copy of the dump file for dev_coredumpv() as during the
* transition period we need to own the original file. Once
* fw_crash_dump debugfs file is removed no need to have a copy
* anymore.
*/
dump_len = le32_to_cpu(dump->len);
dump_ptr = vzalloc(dump_len);
if (!dump_ptr)
return -ENOMEM;
memcpy(dump_ptr, dump, dump_len);
dev_coredumpv(ar->dev, dump_ptr, dump_len, GFP_KERNEL);
return 0;
}
#endif /* CONFIG_DEV_COREDUMP */

121
drivers/net/wireless/ath/ath10k/coredump.h Normal file
View File

@ -0,0 +1,121 @@
/*
* Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _COREDUMP_H_
#define _COREDUMP_H_
#include "core.h"
#define ATH10K_FW_CRASH_DUMP_VERSION 1
/**
* enum ath10k_fw_crash_dump_type - types of data in the dump file
* @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
*/
enum ath10k_fw_crash_dump_type {
ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
ATH10K_FW_CRASH_DUMP_CE_DATA = 1,
ATH10K_FW_CRASH_DUMP_MAX,
};
struct ath10k_tlv_dump_data {
/* see ath10k_fw_crash_dump_type above */
__le32 type;
/* in bytes */
__le32 tlv_len;
/* pad to 32-bit boundaries as needed */
u8 tlv_data[];
} __packed;
struct ath10k_dump_file_data {
/* dump file information */
/* "ATH10K-FW-DUMP" */
char df_magic[16];
__le32 len;
/* file dump version */
__le32 version;
/* some info we can get from ath10k struct that might help */
guid_t guid;
__le32 chip_id;
/* 0 for now, in place for later hardware */
__le32 bus_type;
__le32 target_version;
__le32 fw_version_major;
__le32 fw_version_minor;
__le32 fw_version_release;
__le32 fw_version_build;
__le32 phy_capability;
__le32 hw_min_tx_power;
__le32 hw_max_tx_power;
__le32 ht_cap_info;
__le32 vht_cap_info;
__le32 num_rf_chains;
/* firmware version string */
char fw_ver[ETHTOOL_FWVERS_LEN];
/* Kernel related information */
/* time-of-day stamp */
__le64 tv_sec;
/* time-of-day stamp, nano-seconds */
__le64 tv_nsec;
/* LINUX_VERSION_CODE */
__le32 kernel_ver_code;
/* VERMAGIC_STRING */
char kernel_ver[64];
/* room for growth w/out changing binary format */
u8 unused[128];
/* struct ath10k_tlv_dump_data + more */
u8 data[0];
} __packed;
#ifdef CONFIG_DEV_COREDUMP
int ath10k_coredump_submit(struct ath10k *ar);
struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar);
#else /* CONFIG_DEV_COREDUMP */
static inline int ath10k_coredump_submit(struct ath10k *ar)
{
return 0;
}
static inline struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar)
{
return NULL;
}
#endif /* CONFIG_DEV_COREDUMP */
#endif /* _COREDUMP_H_ */

222
drivers/net/wireless/ath/ath10k/debug.c
View File

@ -18,10 +18,8 @@
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/vmalloc.h>
#include <linux/utsname.h>
#include <linux/crc32.h>
#include <linux/firmware.h>
#include <linux/devcoredump.h>
#include "core.h"
#include "debug.h"
@ -33,86 +31,6 @@
#define ATH10K_DEBUG_CAL_DATA_LEN 12064
#define ATH10K_FW_CRASH_DUMP_VERSION 1
/**
* enum ath10k_fw_crash_dump_type - types of data in the dump file
* @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
*/
enum ath10k_fw_crash_dump_type {
ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
ATH10K_FW_CRASH_DUMP_CE_DATA = 1,
ATH10K_FW_CRASH_DUMP_MAX,
};
struct ath10k_tlv_dump_data {
/* see ath10k_fw_crash_dump_type above */
__le32 type;
/* in bytes */
__le32 tlv_len;
/* pad to 32-bit boundaries as needed */
u8 tlv_data[];
} __packed;
struct ath10k_dump_file_data {
/* dump file information */
/* "ATH10K-FW-DUMP" */
char df_magic[16];
__le32 len;
/* file dump version */
__le32 version;
/* some info we can get from ath10k struct that might help */
guid_t guid;
__le32 chip_id;
/* 0 for now, in place for later hardware */
__le32 bus_type;
__le32 target_version;
__le32 fw_version_major;
__le32 fw_version_minor;
__le32 fw_version_release;
__le32 fw_version_build;
__le32 phy_capability;
__le32 hw_min_tx_power;
__le32 hw_max_tx_power;
__le32 ht_cap_info;
__le32 vht_cap_info;
__le32 num_rf_chains;
/* firmware version string */
char fw_ver[ETHTOOL_FWVERS_LEN];
/* Kernel related information */
/* time-of-day stamp */
__le64 tv_sec;
/* time-of-day stamp, nano-seconds */
__le64 tv_nsec;
/* LINUX_VERSION_CODE */
__le32 kernel_ver_code;
/* VERMAGIC_STRING */
char kernel_ver[64];
/* room for growth w/out changing binary format */
u8 unused[128];
/* struct ath10k_tlv_dump_data + more */
u8 data[0];
} __packed;
void ath10k_info(struct ath10k *ar, const char *fmt, ...)
{
struct va_format vaf = {
@ -711,146 +629,6 @@ static const struct file_operations fops_chip_id = {
.llseek = default_llseek,
};
struct ath10k_fw_crash_data *
ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
{
struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
lockdep_assert_held(&ar->data_lock);
crash_data->crashed_since_read = true;
guid_gen(&crash_data->guid);
ktime_get_real_ts64(&crash_data->timestamp);
return crash_data;
}
EXPORT_SYMBOL(ath10k_debug_get_new_fw_crash_data);
static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar,
bool mark_read)
{
struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
struct ath10k_ce_crash_hdr *ce_hdr;
struct ath10k_dump_file_data *dump_data;
struct ath10k_tlv_dump_data *dump_tlv;
size_t hdr_len = sizeof(*dump_data);
size_t len, sofar = 0;
unsigned char *buf;
len = hdr_len;
len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
len += sizeof(*dump_tlv) + sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]);
sofar += hdr_len;
/* This is going to get big when we start dumping FW RAM and such,
* so go ahead and use vmalloc.
*/
buf = vzalloc(len);
if (!buf)
return NULL;
spin_lock_bh(&ar->data_lock);
if (!crash_data->crashed_since_read) {
spin_unlock_bh(&ar->data_lock);
vfree(buf);
return NULL;
}
dump_data = (struct ath10k_dump_file_data *)(buf);
strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
sizeof(dump_data->df_magic));
dump_data->len = cpu_to_le32(len);
dump_data->version = cpu_to_le32(ATH10K_FW_CRASH_DUMP_VERSION);
guid_copy(&dump_data->guid, &crash_data->guid);
dump_data->chip_id = cpu_to_le32(ar->chip_id);
dump_data->bus_type = cpu_to_le32(0);
dump_data->target_version = cpu_to_le32(ar->target_version);
dump_data->fw_version_major = cpu_to_le32(ar->fw_version_major);
dump_data->fw_version_minor = cpu_to_le32(ar->fw_version_minor);
dump_data->fw_version_release = cpu_to_le32(ar->fw_version_release);
dump_data->fw_version_build = cpu_to_le32(ar->fw_version_build);
dump_data->phy_capability = cpu_to_le32(ar->phy_capability);
dump_data->hw_min_tx_power = cpu_to_le32(ar->hw_min_tx_power);
dump_data->hw_max_tx_power = cpu_to_le32(ar->hw_max_tx_power);
dump_data->ht_cap_info = cpu_to_le32(ar->ht_cap_info);
dump_data->vht_cap_info = cpu_to_le32(ar->vht_cap_info);
dump_data->num_rf_chains = cpu_to_le32(ar->num_rf_chains);
strlcpy(dump_data->fw_ver, ar->hw->wiphy->fw_version,
sizeof(dump_data->fw_ver));
dump_data->kernel_ver_code = 0;
strlcpy(dump_data->kernel_ver, init_utsname()->release,
sizeof(dump_data->kernel_ver));
dump_data->tv_sec = cpu_to_le64(crash_data->timestamp.tv_sec);
dump_data->tv_nsec = cpu_to_le64(crash_data->timestamp.tv_nsec);
/* Gather crash-dump */
dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_REGISTERS);
dump_tlv->tlv_len = cpu_to_le32(sizeof(crash_data->registers));
memcpy(dump_tlv->tlv_data, &crash_data->registers,
sizeof(crash_data->registers));
sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_CE_DATA);
dump_tlv->tlv_len = cpu_to_le32(sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]));
ce_hdr = (struct ath10k_ce_crash_hdr *)(dump_tlv->tlv_data);
ce_hdr->ce_count = cpu_to_le32(CE_COUNT);
memset(ce_hdr->reserved, 0, sizeof(ce_hdr->reserved));
memcpy(ce_hdr->entries, crash_data->ce_crash_data,
CE_COUNT * sizeof(ce_hdr->entries[0]));
sofar += sizeof(*dump_tlv) + sizeof(*ce_hdr) +
CE_COUNT * sizeof(ce_hdr->entries[0]);
ar->debug.fw_crash_data->crashed_since_read = !mark_read;
spin_unlock_bh(&ar->data_lock);
return dump_data;
}
int ath10k_debug_fw_devcoredump(struct ath10k *ar)
{
struct ath10k_dump_file_data *dump;
void *dump_ptr;
u32 dump_len;
/* To keep the dump file available also for debugfs don't mark the
* file read, only debugfs should do that.
*/
dump = ath10k_build_dump_file(ar, false);
if (!dump) {
ath10k_warn(ar, "no crash dump data found for devcoredump");
return -ENODATA;
}
/* Make a copy of the dump file for dev_coredumpv() as during the
* transition period we need to own the original file. Once
* fw_crash_dump debugfs file is removed no need to have a copy
* anymore.
*/
dump_len = le32_to_cpu(dump->len);
dump_ptr = vzalloc(dump_len);
if (!dump_ptr)
return -ENOMEM;
memcpy(dump_ptr, dump, dump_len);
dev_coredumpv(ar->dev, dump_ptr, dump_len, GFP_KERNEL);
return 0;
}
static ssize_t ath10k_reg_addr_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)

16
drivers/net/wireless/ath/ath10k/debug.h
View File

@ -101,13 +101,8 @@ void ath10k_debug_unregister(struct ath10k *ar);
void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb);
void ath10k_debug_tpc_stats_process(struct ath10k *ar,
struct ath10k_tpc_stats *tpc_stats);
struct ath10k_fw_crash_data *
ath10k_debug_get_new_fw_crash_data(struct ath10k *ar);
void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer, int len);
int ath10k_debug_fw_devcoredump(struct ath10k *ar);
#define ATH10K_DFS_STAT_INC(ar, c) (ar->debug.dfs_stats.c++)
void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
@ -174,12 +169,6 @@ static inline void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer,
{
}
static inline struct ath10k_fw_crash_data *
ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
{
return NULL;
}
static inline u64 ath10k_debug_get_fw_dbglog_mask(struct ath10k *ar)
{
return 0;
@ -190,11 +179,6 @@ static inline u32 ath10k_debug_get_fw_dbglog_level(struct ath10k *ar)
return 0;
}
static inline int ath10k_debug_fw_devcoredump(struct ath10k *ar)
{
return 0;
}
#define ATH10K_DFS_STAT_INC(ar, c) do { } while (0)
#define ath10k_debug_get_et_strings NULL

3
drivers/net/wireless/ath/ath10k/pci.c
View File

@ -23,6 +23,7 @@
#include "core.h"
#include "debug.h"
#include "coredump.h"
#include "targaddrs.h"
#include "bmi.h"
@ -1470,7 +1471,7 @@ static void ath10k_pci_fw_crashed_dump(struct ath10k *ar)
ar->stats.fw_crash_counter++;
crash_data = ath10k_debug_get_new_fw_crash_data(ar);
crash_data = ath10k_coredump_new(ar);
if (crash_data)
scnprintf(guid, sizeof(guid), "%pUl", &crash_data->guid);