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linux/drivers/net/wireless/ath/ath10k/debug.c

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/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2013 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 <linux/module.h>
#include <linux/debugfs.h>
#include <linux/vmalloc.h>
#include <linux/utsname.h>
#include "core.h"
#include "debug.h"
#include "hif.h"
/* ms */
#define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
#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_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 */
u8 uuid[16];
__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 = {
.fmt = fmt,
};
va_list args;
va_start(args, fmt);
vaf.va = &args;
dev_info(ar->dev, "%pV", &vaf);
trace_ath10k_log_info(ar, &vaf);
va_end(args);
}
EXPORT_SYMBOL(ath10k_info);
void ath10k_print_driver_info(struct ath10k *ar)
{
ath10k_info(ar, "%s (0x%08x, 0x%08x) fw %s api %d htt %d.%d wmi %d.%d.%d.%d cal %s\n",
ar->hw_params.name,
ar->target_version,
ar->chip_id,
ar->hw->wiphy->fw_version,
ar->fw_api,
ar->htt.target_version_major,
ar->htt.target_version_minor,
ar->fw_version_major,
ar->fw_version_minor,
ar->fw_version_release,
ar->fw_version_build,
ath10k_cal_mode_str(ar->cal_mode));
ath10k_info(ar, "debug %d debugfs %d tracing %d dfs %d testmode %d\n",
config_enabled(CONFIG_ATH10K_DEBUG),
config_enabled(CONFIG_ATH10K_DEBUGFS),
config_enabled(CONFIG_ATH10K_TRACING),
config_enabled(CONFIG_ATH10K_DFS_CERTIFIED),
config_enabled(CONFIG_NL80211_TESTMODE));
}
EXPORT_SYMBOL(ath10k_print_driver_info);
void ath10k_err(struct ath10k *ar, const char *fmt, ...)
{
struct va_format vaf = {
.fmt = fmt,
};
va_list args;
va_start(args, fmt);
vaf.va = &args;
dev_err(ar->dev, "%pV", &vaf);
trace_ath10k_log_err(ar, &vaf);
va_end(args);
}
EXPORT_SYMBOL(ath10k_err);
void ath10k_warn(struct ath10k *ar, const char *fmt, ...)
{
struct va_format vaf = {
.fmt = fmt,
};
va_list args;
va_start(args, fmt);
vaf.va = &args;
dev_warn_ratelimited(ar->dev, "%pV", &vaf);
trace_ath10k_log_warn(ar, &vaf);
va_end(args);
}
EXPORT_SYMBOL(ath10k_warn);
#ifdef CONFIG_ATH10K_DEBUGFS
void ath10k_debug_read_service_map(struct ath10k *ar,
const void *service_map,
size_t map_size)
{
memcpy(ar->debug.wmi_service_bitmap, service_map, map_size);
}
static ssize_t ath10k_read_wmi_services(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char *buf;
unsigned int len = 0, buf_len = 4096;
const char *name;
ssize_t ret_cnt;
bool enabled;
int i;
buf = kzalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
mutex_lock(&ar->conf_mutex);
if (len > buf_len)
len = buf_len;
for (i = 0; i < WMI_SERVICE_MAX; i++) {
enabled = test_bit(i, ar->debug.wmi_service_bitmap);
name = wmi_service_name(i);
if (!name) {
if (enabled)
len += scnprintf(buf + len, buf_len - len,
"%-40s %s (bit %d)\n",
"unknown", "enabled", i);
continue;
}
len += scnprintf(buf + len, buf_len - len,
"%-40s %s\n",
name, enabled ? "enabled" : "-");
}
ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
mutex_unlock(&ar->conf_mutex);
kfree(buf);
return ret_cnt;
}
static const struct file_operations fops_wmi_services = {
.read = ath10k_read_wmi_services,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static void ath10k_debug_fw_stats_pdevs_free(struct list_head *head)
{
struct ath10k_fw_stats_pdev *i, *tmp;
list_for_each_entry_safe(i, tmp, head, list) {
list_del(&i->list);
kfree(i);
}
}
static void ath10k_debug_fw_stats_peers_free(struct list_head *head)
{
struct ath10k_fw_stats_peer *i, *tmp;
list_for_each_entry_safe(i, tmp, head, list) {
list_del(&i->list);
kfree(i);
}
}
static void ath10k_debug_fw_stats_reset(struct ath10k *ar)
{
spin_lock_bh(&ar->data_lock);
ar->debug.fw_stats_done = false;
ath10k_debug_fw_stats_pdevs_free(&ar->debug.fw_stats.pdevs);
ath10k_debug_fw_stats_peers_free(&ar->debug.fw_stats.peers);
spin_unlock_bh(&ar->data_lock);
}
static size_t ath10k_debug_fw_stats_num_peers(struct list_head *head)
{
struct ath10k_fw_stats_peer *i;
size_t num = 0;
list_for_each_entry(i, head, list)
++num;
return num;
}
void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb)
{
struct ath10k_fw_stats stats = {};
bool is_start, is_started, is_end;
size_t num_peers;
int ret;
INIT_LIST_HEAD(&stats.pdevs);
INIT_LIST_HEAD(&stats.peers);
spin_lock_bh(&ar->data_lock);
ret = ath10k_wmi_pull_fw_stats(ar, skb, &stats);
if (ret) {
ath10k_warn(ar, "failed to pull fw stats: %d\n", ret);
goto unlock;
}
/* Stat data may exceed htc-wmi buffer limit. In such case firmware
* splits the stats data and delivers it in a ping-pong fashion of
* request cmd-update event.
*
* However there is no explicit end-of-data. Instead start-of-data is
* used as an implicit one. This works as follows:
* a) discard stat update events until one with pdev stats is
* delivered - this skips session started at end of (b)
* b) consume stat update events until another one with pdev stats is
* delivered which is treated as end-of-data and is itself discarded
*/
if (ar->debug.fw_stats_done) {
ath10k_warn(ar, "received unsolicited stats update event\n");
goto free;
}
num_peers = ath10k_debug_fw_stats_num_peers(&ar->debug.fw_stats.peers);
is_start = (list_empty(&ar->debug.fw_stats.pdevs) &&
!list_empty(&stats.pdevs));
is_end = (!list_empty(&ar->debug.fw_stats.pdevs) &&
!list_empty(&stats.pdevs));
if (is_start)
list_splice_tail_init(&stats.pdevs, &ar->debug.fw_stats.pdevs);
if (is_end)
ar->debug.fw_stats_done = true;
is_started = !list_empty(&ar->debug.fw_stats.pdevs);
if (is_started && !is_end) {
if (num_peers >= ATH10K_MAX_NUM_PEER_IDS) {
/* Although this is unlikely impose a sane limit to
* prevent firmware from DoS-ing the host.
*/
ath10k_warn(ar, "dropping fw peer stats\n");
goto free;
}
list_splice_tail_init(&stats.peers, &ar->debug.fw_stats.peers);
}
complete(&ar->debug.fw_stats_complete);
free:
/* In some cases lists have been spliced and cleared. Free up
* resources if that is not the case.
*/
ath10k_debug_fw_stats_pdevs_free(&stats.pdevs);
ath10k_debug_fw_stats_peers_free(&stats.peers);
unlock:
spin_unlock_bh(&ar->data_lock);
}
static int ath10k_debug_fw_stats_request(struct ath10k *ar)
{
unsigned long timeout;
int ret;
lockdep_assert_held(&ar->conf_mutex);
timeout = jiffies + msecs_to_jiffies(1*HZ);
ath10k_debug_fw_stats_reset(ar);
for (;;) {
if (time_after(jiffies, timeout))
return -ETIMEDOUT;
reinit_completion(&ar->debug.fw_stats_complete);
ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT);
if (ret) {
ath10k_warn(ar, "could not request stats (%d)\n", ret);
return ret;
}
ret = wait_for_completion_timeout(&ar->debug.fw_stats_complete,
1*HZ);
if (ret <= 0)
return -ETIMEDOUT;
spin_lock_bh(&ar->data_lock);
if (ar->debug.fw_stats_done) {
spin_unlock_bh(&ar->data_lock);
break;
}
spin_unlock_bh(&ar->data_lock);
}
return 0;
}
/* FIXME: How to calculate the buffer size sanely? */
#define ATH10K_FW_STATS_BUF_SIZE (1024*1024)
static void ath10k_fw_stats_fill(struct ath10k *ar,
struct ath10k_fw_stats *fw_stats,
char *buf)
{
unsigned int len = 0;
unsigned int buf_len = ATH10K_FW_STATS_BUF_SIZE;
const struct ath10k_fw_stats_pdev *pdev;
const struct ath10k_fw_stats_peer *peer;
size_t num_peers;
spin_lock_bh(&ar->data_lock);
pdev = list_first_entry_or_null(&fw_stats->pdevs,
struct ath10k_fw_stats_pdev, list);
if (!pdev) {
ath10k_warn(ar, "failed to get pdev stats\n");
goto unlock;
}
num_peers = ath10k_debug_fw_stats_num_peers(&fw_stats->peers);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
"ath10k PDEV stats");
len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Channel noise floor", pdev->ch_noise_floor);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"Channel TX power", pdev->chan_tx_power);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"TX frame count", pdev->tx_frame_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RX frame count", pdev->rx_frame_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RX clear count", pdev->rx_clear_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"Cycle count", pdev->cycle_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"PHY error count", pdev->phy_err_count);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RTS bad count", pdev->rts_bad);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"RTS good count", pdev->rts_good);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"FCS bad count", pdev->fcs_bad);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"No beacon count", pdev->no_beacons);
len += scnprintf(buf + len, buf_len - len, "%30s %10u\n",
"MIB int count", pdev->mib_int_count);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
"ath10k PDEV TX stats");
len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HTT cookies queued", pdev->comp_queued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HTT cookies disp.", pdev->comp_delivered);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDU queued", pdev->msdu_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU queued", pdev->mpdu_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs dropped", pdev->wmm_drop);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Local enqued", pdev->local_enqued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Local freed", pdev->local_freed);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HW queued", pdev->hw_queued);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PPDUs reaped", pdev->hw_reaped);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Num underruns", pdev->underrun);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PPDUs cleaned", pdev->tx_abort);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs requed", pdev->mpdus_requed);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Excessive retries", pdev->tx_ko);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"HW rate", pdev->data_rc);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Sched self tiggers", pdev->self_triggers);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Dropped due to SW retries",
pdev->sw_retry_failure);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Illegal rate phy errors",
pdev->illgl_rate_phy_err);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Pdev continous xretry", pdev->pdev_cont_xretry);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"TX timeout", pdev->pdev_tx_timeout);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PDEV resets", pdev->pdev_resets);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY underrun", pdev->phy_underrun);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU is more than txop limit", pdev->txop_ovf);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s\n",
"ath10k PDEV RX stats");
len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
"=================");
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Mid PPDU route change",
pdev->mid_ppdu_route_change);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Tot. number of statuses", pdev->status_rcvd);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 0", pdev->r0_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 1", pdev->r1_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 2", pdev->r2_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Extra frags on rings 3", pdev->r3_frags);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs delivered to HTT", pdev->htt_msdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs delivered to HTT", pdev->htt_mpdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MSDUs delivered to stack", pdev->loc_msdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDUs delivered to stack", pdev->loc_mpdus);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"Oversized AMSUs", pdev->oversize_amsdu);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY errors", pdev->phy_errs);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"PHY errors drops", pdev->phy_err_drop);
len += scnprintf(buf + len, buf_len - len, "%30s %10d\n",
"MPDU errors (FCS, MIC, ENC)", pdev->mpdu_errs);
len += scnprintf(buf + len, buf_len - len, "\n");
len += scnprintf(buf + len, buf_len - len, "%30s (%zu)\n",
"ath10k PEER stats", num_peers);
len += scnprintf(buf + len, buf_len - len, "%30s\n\n",
"=================");
list_for_each_entry(peer, &fw_stats->peers, list) {
len += scnprintf(buf + len, buf_len - len, "%30s %pM\n",
"Peer MAC address", peer->peer_macaddr);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer RSSI", peer->peer_rssi);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer TX rate", peer->peer_tx_rate);
len += scnprintf(buf + len, buf_len - len, "%30s %u\n",
"Peer RX rate", peer->peer_rx_rate);
len += scnprintf(buf + len, buf_len - len, "\n");
}
unlock:
spin_unlock_bh(&ar->data_lock);
if (len >= buf_len)
buf[len - 1] = 0;
else
buf[len] = 0;
}
static int ath10k_fw_stats_open(struct inode *inode, struct file *file)
{
struct ath10k *ar = inode->i_private;
void *buf = NULL;
int ret;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON) {
ret = -ENETDOWN;
goto err_unlock;
}
buf = vmalloc(ATH10K_FW_STATS_BUF_SIZE);
if (!buf) {
ret = -ENOMEM;
goto err_unlock;
}
ret = ath10k_debug_fw_stats_request(ar);
if (ret) {
ath10k_warn(ar, "failed to request fw stats: %d\n", ret);
goto err_free;
}
ath10k_fw_stats_fill(ar, &ar->debug.fw_stats, buf);
file->private_data = buf;
mutex_unlock(&ar->conf_mutex);
return 0;
err_free:
vfree(buf);
err_unlock:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static int ath10k_fw_stats_release(struct inode *inode, struct file *file)
{
vfree(file->private_data);
return 0;
}
static ssize_t ath10k_fw_stats_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
const char *buf = file->private_data;
unsigned int len = strlen(buf);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_fw_stats = {
.open = ath10k_fw_stats_open,
.release = ath10k_fw_stats_release,
.read = ath10k_fw_stats_read,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_debug_fw_reset_stats_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
int ret, len, buf_len;
char *buf;
buf_len = 500;
buf = kmalloc(buf_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
spin_lock_bh(&ar->data_lock);
len = 0;
len += scnprintf(buf + len, buf_len - len,
"fw_crash_counter\t\t%d\n", ar->stats.fw_crash_counter);
len += scnprintf(buf + len, buf_len - len,
"fw_warm_reset_counter\t\t%d\n",
ar->stats.fw_warm_reset_counter);
len += scnprintf(buf + len, buf_len - len,
"fw_cold_reset_counter\t\t%d\n",
ar->stats.fw_cold_reset_counter);
spin_unlock_bh(&ar->data_lock);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return ret;
}
static const struct file_operations fops_fw_reset_stats = {
.open = simple_open,
.read = ath10k_debug_fw_reset_stats_read,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
/* This is a clean assert crash in firmware. */
static int ath10k_debug_fw_assert(struct ath10k *ar)
{
struct wmi_vdev_install_key_cmd *cmd;
struct sk_buff *skb;
skb = ath10k_wmi_alloc_skb(ar, sizeof(*cmd) + 16);
if (!skb)
return -ENOMEM;
cmd = (struct wmi_vdev_install_key_cmd *)skb->data;
memset(cmd, 0, sizeof(*cmd));
/* big enough number so that firmware asserts */
cmd->vdev_id = __cpu_to_le32(0x7ffe);
return ath10k_wmi_cmd_send(ar, skb,
ar->wmi.cmd->vdev_install_key_cmdid);
}
static ssize_t ath10k_read_simulate_fw_crash(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
const char buf[] =
"To simulate firmware crash write one of the keywords to this file:\n"
"`soft` - this will send WMI_FORCE_FW_HANG_ASSERT to firmware if FW supports that command.\n"
"`hard` - this will send to firmware command with illegal parameters causing firmware crash.\n"
"`assert` - this will send special illegal parameter to firmware to cause assert failure and crash.\n"
"`hw-restart` - this will simply queue hw restart without fw/hw actually crashing.\n";
return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
}
/* Simulate firmware crash:
* 'soft': Call wmi command causing firmware hang. This firmware hang is
* recoverable by warm firmware reset.
* 'hard': Force firmware crash by setting any vdev parameter for not allowed
* vdev id. This is hard firmware crash because it is recoverable only by cold
* firmware reset.
*/
static ssize_t ath10k_write_simulate_fw_crash(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char buf[32];
int ret;
mutex_lock(&ar->conf_mutex);
simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
/* make sure that buf is null terminated */
buf[sizeof(buf) - 1] = 0;
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_RESTARTED) {
ret = -ENETDOWN;
goto exit;
}
/* drop the possible '\n' from the end */
if (buf[count - 1] == '\n') {
buf[count - 1] = 0;
count--;
}
if (!strcmp(buf, "soft")) {
ath10k_info(ar, "simulating soft firmware crash\n");
ret = ath10k_wmi_force_fw_hang(ar, WMI_FORCE_FW_HANG_ASSERT, 0);
} else if (!strcmp(buf, "hard")) {
ath10k_info(ar, "simulating hard firmware crash\n");
/* 0x7fff is vdev id, and it is always out of range for all
* firmware variants in order to force a firmware crash.
*/
ret = ath10k_wmi_vdev_set_param(ar, 0x7fff,
ar->wmi.vdev_param->rts_threshold,
0);
} else if (!strcmp(buf, "assert")) {
ath10k_info(ar, "simulating firmware assert crash\n");
ret = ath10k_debug_fw_assert(ar);
} else if (!strcmp(buf, "hw-restart")) {
ath10k_info(ar, "user requested hw restart\n");
queue_work(ar->workqueue, &ar->restart_work);
ret = 0;
} else {
ret = -EINVAL;
goto exit;
}
if (ret) {
ath10k_warn(ar, "failed to simulate firmware crash: %d\n", ret);
goto exit;
}
ret = count;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static const struct file_operations fops_simulate_fw_crash = {
.read = ath10k_read_simulate_fw_crash,
.write = ath10k_write_simulate_fw_crash,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_read_chip_id(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
unsigned int len;
char buf[50];
len = scnprintf(buf, sizeof(buf), "0x%08x\n", ar->chip_id);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_chip_id = {
.read = ath10k_read_chip_id,
.open = simple_open,
.owner = THIS_MODULE,
.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;
uuid_le_gen(&crash_data->uuid);
getnstimeofday(&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)
{
struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
struct ath10k_dump_file_data *dump_data;
struct ath10k_tlv_dump_data *dump_tlv;
int hdr_len = sizeof(*dump_data);
unsigned int len, sofar = 0;
unsigned char *buf;
len = hdr_len;
len += sizeof(*dump_tlv) + sizeof(crash_data->registers);
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);
memcpy(dump_data->uuid, &crash_data->uuid, sizeof(dump_data->uuid));
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);
ar->debug.fw_crash_data->crashed_since_read = false;
spin_unlock_bh(&ar->data_lock);
return dump_data;
}
static int ath10k_fw_crash_dump_open(struct inode *inode, struct file *file)
{
struct ath10k *ar = inode->i_private;
struct ath10k_dump_file_data *dump;
dump = ath10k_build_dump_file(ar);
if (!dump)
return -ENODATA;
file->private_data = dump;
return 0;
}
static ssize_t ath10k_fw_crash_dump_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k_dump_file_data *dump_file = file->private_data;
return simple_read_from_buffer(user_buf, count, ppos,
dump_file,
le32_to_cpu(dump_file->len));
}
static int ath10k_fw_crash_dump_release(struct inode *inode,
struct file *file)
{
vfree(file->private_data);
return 0;
}
static const struct file_operations fops_fw_crash_dump = {
.open = ath10k_fw_crash_dump_open,
.read = ath10k_fw_crash_dump_read,
.release = ath10k_fw_crash_dump_release,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_reg_addr_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u8 buf[32];
unsigned int len = 0;
u32 reg_addr;
mutex_lock(&ar->conf_mutex);
reg_addr = ar->debug.reg_addr;
mutex_unlock(&ar->conf_mutex);
len += scnprintf(buf + len, sizeof(buf) - len, "0x%x\n", reg_addr);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath10k_reg_addr_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u32 reg_addr;
int ret;
ret = kstrtou32_from_user(user_buf, count, 0, &reg_addr);
if (ret)
return ret;
if (!IS_ALIGNED(reg_addr, 4))
return -EFAULT;
mutex_lock(&ar->conf_mutex);
ar->debug.reg_addr = reg_addr;
mutex_unlock(&ar->conf_mutex);
return count;
}
static const struct file_operations fops_reg_addr = {
.read = ath10k_reg_addr_read,
.write = ath10k_reg_addr_write,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_reg_value_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u8 buf[48];
unsigned int len;
u32 reg_addr, reg_val;
int ret;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto exit;
}
reg_addr = ar->debug.reg_addr;
reg_val = ath10k_hif_read32(ar, reg_addr);
len = scnprintf(buf, sizeof(buf), "0x%08x:0x%08x\n", reg_addr, reg_val);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, len);
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static ssize_t ath10k_reg_value_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u32 reg_addr, reg_val;
int ret;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto exit;
}
reg_addr = ar->debug.reg_addr;
ret = kstrtou32_from_user(user_buf, count, 0, &reg_val);
if (ret)
goto exit;
ath10k_hif_write32(ar, reg_addr, reg_val);
ret = count;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static const struct file_operations fops_reg_value = {
.read = ath10k_reg_value_read,
.write = ath10k_reg_value_write,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_mem_value_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u8 *buf;
int ret;
if (*ppos < 0)
return -EINVAL;
if (!count)
return 0;
mutex_lock(&ar->conf_mutex);
buf = vmalloc(count);
if (!buf) {
ret = -ENOMEM;
goto exit;
}
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto exit;
}
ret = ath10k_hif_diag_read(ar, *ppos, buf, count);
if (ret) {
ath10k_warn(ar, "failed to read address 0x%08x via diagnose window fnrom debugfs: %d\n",
(u32)(*ppos), ret);
goto exit;
}
ret = copy_to_user(user_buf, buf, count);
if (ret) {
ret = -EFAULT;
goto exit;
}
count -= ret;
*ppos += count;
ret = count;
exit:
vfree(buf);
mutex_unlock(&ar->conf_mutex);
return ret;
}
static ssize_t ath10k_mem_value_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u8 *buf;
int ret;
if (*ppos < 0)
return -EINVAL;
if (!count)
return 0;
mutex_lock(&ar->conf_mutex);
buf = vmalloc(count);
if (!buf) {
ret = -ENOMEM;
goto exit;
}
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto exit;
}
ret = copy_from_user(buf, user_buf, count);
if (ret) {
ret = -EFAULT;
goto exit;
}
ret = ath10k_hif_diag_write(ar, *ppos, buf, count);
if (ret) {
ath10k_warn(ar, "failed to write address 0x%08x via diagnose window from debugfs: %d\n",
(u32)(*ppos), ret);
goto exit;
}
*ppos += count;
ret = count;
exit:
vfree(buf);
mutex_unlock(&ar->conf_mutex);
return ret;
}
static const struct file_operations fops_mem_value = {
.read = ath10k_mem_value_read,
.write = ath10k_mem_value_write,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static int ath10k_debug_htt_stats_req(struct ath10k *ar)
{
u64 cookie;
int ret;
lockdep_assert_held(&ar->conf_mutex);
if (ar->debug.htt_stats_mask == 0)
/* htt stats are disabled */
return 0;
if (ar->state != ATH10K_STATE_ON)
return 0;
cookie = get_jiffies_64();
ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask,
cookie);
if (ret) {
ath10k_warn(ar, "failed to send htt stats request: %d\n", ret);
return ret;
}
queue_delayed_work(ar->workqueue, &ar->debug.htt_stats_dwork,
msecs_to_jiffies(ATH10K_DEBUG_HTT_STATS_INTERVAL));
return 0;
}
static void ath10k_debug_htt_stats_dwork(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k,
debug.htt_stats_dwork.work);
mutex_lock(&ar->conf_mutex);
ath10k_debug_htt_stats_req(ar);
mutex_unlock(&ar->conf_mutex);
}
static ssize_t ath10k_read_htt_stats_mask(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char buf[32];
unsigned int len;
len = scnprintf(buf, sizeof(buf), "%lu\n", ar->debug.htt_stats_mask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath10k_write_htt_stats_mask(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
unsigned long mask;
int ret;
ret = kstrtoul_from_user(user_buf, count, 0, &mask);
if (ret)
return ret;
/* max 8 bit masks (for now) */
if (mask > 0xff)
return -E2BIG;
mutex_lock(&ar->conf_mutex);
ar->debug.htt_stats_mask = mask;
ret = ath10k_debug_htt_stats_req(ar);
if (ret)
goto out;
ret = count;
out:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static const struct file_operations fops_htt_stats_mask = {
.read = ath10k_read_htt_stats_mask,
.write = ath10k_write_htt_stats_mask,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_read_htt_max_amsdu_ampdu(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char buf[64];
u8 amsdu = 3, ampdu = 64;
unsigned int len;
mutex_lock(&ar->conf_mutex);
if (ar->debug.htt_max_amsdu)
amsdu = ar->debug.htt_max_amsdu;
if (ar->debug.htt_max_ampdu)
ampdu = ar->debug.htt_max_ampdu;
mutex_unlock(&ar->conf_mutex);
len = scnprintf(buf, sizeof(buf), "%u %u\n", amsdu, ampdu);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath10k_write_htt_max_amsdu_ampdu(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
int res;
char buf[64];
unsigned int amsdu, ampdu;
simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
/* make sure that buf is null terminated */
buf[sizeof(buf) - 1] = 0;
res = sscanf(buf, "%u %u", &amsdu, &ampdu);
if (res != 2)
return -EINVAL;
mutex_lock(&ar->conf_mutex);
res = ath10k_htt_h2t_aggr_cfg_msg(&ar->htt, ampdu, amsdu);
if (res)
goto out;
res = count;
ar->debug.htt_max_amsdu = amsdu;
ar->debug.htt_max_ampdu = ampdu;
out:
mutex_unlock(&ar->conf_mutex);
return res;
}
static const struct file_operations fops_htt_max_amsdu_ampdu = {
.read = ath10k_read_htt_max_amsdu_ampdu,
.write = ath10k_write_htt_max_amsdu_ampdu,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_read_fw_dbglog(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
unsigned int len;
char buf[32];
len = scnprintf(buf, sizeof(buf), "0x%08x\n",
ar->debug.fw_dbglog_mask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath10k_write_fw_dbglog(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
unsigned long mask;
int ret;
ret = kstrtoul_from_user(user_buf, count, 0, &mask);
if (ret)
return ret;
mutex_lock(&ar->conf_mutex);
ar->debug.fw_dbglog_mask = mask;
if (ar->state == ATH10K_STATE_ON) {
ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
if (ret) {
ath10k_warn(ar, "dbglog cfg failed from debugfs: %d\n",
ret);
goto exit;
}
}
ret = count;
exit:
mutex_unlock(&ar->conf_mutex);
return ret;
}
/* TODO: Would be nice to always support ethtool stats, would need to
* move the stats storage out of ath10k_debug, or always have ath10k_debug
* struct available..
*/
/* This generally cooresponds to the debugfs fw_stats file */
static const char ath10k_gstrings_stats[][ETH_GSTRING_LEN] = {
"tx_pkts_nic",
"tx_bytes_nic",
"rx_pkts_nic",
"rx_bytes_nic",
"d_noise_floor",
"d_cycle_count",
"d_phy_error",
"d_rts_bad",
"d_rts_good",
"d_tx_power", /* in .5 dbM I think */
"d_rx_crc_err", /* fcs_bad */
"d_no_beacon",
"d_tx_mpdus_queued",
"d_tx_msdu_queued",
"d_tx_msdu_dropped",
"d_local_enqued",
"d_local_freed",
"d_tx_ppdu_hw_queued",
"d_tx_ppdu_reaped",
"d_tx_fifo_underrun",
"d_tx_ppdu_abort",
"d_tx_mpdu_requed",
"d_tx_excessive_retries",
"d_tx_hw_rate",
"d_tx_dropped_sw_retries",
"d_tx_illegal_rate",
"d_tx_continuous_xretries",
"d_tx_timeout",
"d_tx_mpdu_txop_limit",
"d_pdev_resets",
"d_rx_mid_ppdu_route_change",
"d_rx_status",
"d_rx_extra_frags_ring0",
"d_rx_extra_frags_ring1",
"d_rx_extra_frags_ring2",
"d_rx_extra_frags_ring3",
"d_rx_msdu_htt",
"d_rx_mpdu_htt",
"d_rx_msdu_stack",
"d_rx_mpdu_stack",
"d_rx_phy_err",
"d_rx_phy_err_drops",
"d_rx_mpdu_errors", /* FCS, MIC, ENC */
"d_fw_crash_count",
"d_fw_warm_reset_count",
"d_fw_cold_reset_count",
};
#define ATH10K_SSTATS_LEN ARRAY_SIZE(ath10k_gstrings_stats)
void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 sset, u8 *data)
{
if (sset == ETH_SS_STATS)
memcpy(data, *ath10k_gstrings_stats,
sizeof(ath10k_gstrings_stats));
}
int ath10k_debug_get_et_sset_count(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int sset)
{
if (sset == ETH_SS_STATS)
return ATH10K_SSTATS_LEN;
return 0;
}
void ath10k_debug_get_et_stats(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ethtool_stats *stats, u64 *data)
{
struct ath10k *ar = hw->priv;
static const struct ath10k_fw_stats_pdev zero_stats = {};
const struct ath10k_fw_stats_pdev *pdev_stats;
int i = 0, ret;
mutex_lock(&ar->conf_mutex);
if (ar->state == ATH10K_STATE_ON) {
ret = ath10k_debug_fw_stats_request(ar);
if (ret) {
/* just print a warning and try to use older results */
ath10k_warn(ar,
"failed to get fw stats for ethtool: %d\n",
ret);
}
}
pdev_stats = list_first_entry_or_null(&ar->debug.fw_stats.pdevs,
struct ath10k_fw_stats_pdev,
list);
if (!pdev_stats) {
/* no results available so just return zeroes */
pdev_stats = &zero_stats;
}
spin_lock_bh(&ar->data_lock);
data[i++] = pdev_stats->hw_reaped; /* ppdu reaped */
data[i++] = 0; /* tx bytes */
data[i++] = pdev_stats->htt_mpdus;
data[i++] = 0; /* rx bytes */
data[i++] = pdev_stats->ch_noise_floor;
data[i++] = pdev_stats->cycle_count;
data[i++] = pdev_stats->phy_err_count;
data[i++] = pdev_stats->rts_bad;
data[i++] = pdev_stats->rts_good;
data[i++] = pdev_stats->chan_tx_power;
data[i++] = pdev_stats->fcs_bad;
data[i++] = pdev_stats->no_beacons;
data[i++] = pdev_stats->mpdu_enqued;
data[i++] = pdev_stats->msdu_enqued;
data[i++] = pdev_stats->wmm_drop;
data[i++] = pdev_stats->local_enqued;
data[i++] = pdev_stats->local_freed;
data[i++] = pdev_stats->hw_queued;
data[i++] = pdev_stats->hw_reaped;
data[i++] = pdev_stats->underrun;
data[i++] = pdev_stats->tx_abort;
data[i++] = pdev_stats->mpdus_requed;
data[i++] = pdev_stats->tx_ko;
data[i++] = pdev_stats->data_rc;
data[i++] = pdev_stats->sw_retry_failure;
data[i++] = pdev_stats->illgl_rate_phy_err;
data[i++] = pdev_stats->pdev_cont_xretry;
data[i++] = pdev_stats->pdev_tx_timeout;
data[i++] = pdev_stats->txop_ovf;
data[i++] = pdev_stats->pdev_resets;
data[i++] = pdev_stats->mid_ppdu_route_change;
data[i++] = pdev_stats->status_rcvd;
data[i++] = pdev_stats->r0_frags;
data[i++] = pdev_stats->r1_frags;
data[i++] = pdev_stats->r2_frags;
data[i++] = pdev_stats->r3_frags;
data[i++] = pdev_stats->htt_msdus;
data[i++] = pdev_stats->htt_mpdus;
data[i++] = pdev_stats->loc_msdus;
data[i++] = pdev_stats->loc_mpdus;
data[i++] = pdev_stats->phy_errs;
data[i++] = pdev_stats->phy_err_drop;
data[i++] = pdev_stats->mpdu_errs;
data[i++] = ar->stats.fw_crash_counter;
data[i++] = ar->stats.fw_warm_reset_counter;
data[i++] = ar->stats.fw_cold_reset_counter;
spin_unlock_bh(&ar->data_lock);
mutex_unlock(&ar->conf_mutex);
WARN_ON(i != ATH10K_SSTATS_LEN);
}
static const struct file_operations fops_fw_dbglog = {
.read = ath10k_read_fw_dbglog,
.write = ath10k_write_fw_dbglog,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static int ath10k_debug_cal_data_open(struct inode *inode, struct file *file)
{
struct ath10k *ar = inode->i_private;
void *buf;
u32 hi_addr;
__le32 addr;
int ret;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto err;
}
buf = vmalloc(QCA988X_CAL_DATA_LEN);
if (!buf) {
ret = -ENOMEM;
goto err;
}
hi_addr = host_interest_item_address(HI_ITEM(hi_board_data));
ret = ath10k_hif_diag_read(ar, hi_addr, &addr, sizeof(addr));
if (ret) {
ath10k_warn(ar, "failed to read hi_board_data address: %d\n", ret);
goto err_vfree;
}
ret = ath10k_hif_diag_read(ar, le32_to_cpu(addr), buf,
QCA988X_CAL_DATA_LEN);
if (ret) {
ath10k_warn(ar, "failed to read calibration data: %d\n", ret);
goto err_vfree;
}
file->private_data = buf;
mutex_unlock(&ar->conf_mutex);
return 0;
err_vfree:
vfree(buf);
err:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static ssize_t ath10k_debug_cal_data_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
void *buf = file->private_data;
return simple_read_from_buffer(user_buf, count, ppos,
buf, QCA988X_CAL_DATA_LEN);
}
static int ath10k_debug_cal_data_release(struct inode *inode,
struct file *file)
{
vfree(file->private_data);
return 0;
}
static const struct file_operations fops_cal_data = {
.open = ath10k_debug_cal_data_open,
.read = ath10k_debug_cal_data_read,
.release = ath10k_debug_cal_data_release,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
int ath10k_debug_start(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
ret = ath10k_debug_htt_stats_req(ar);
if (ret)
/* continue normally anyway, this isn't serious */
ath10k_warn(ar, "failed to start htt stats workqueue: %d\n",
ret);
if (ar->debug.fw_dbglog_mask) {
ret = ath10k_wmi_dbglog_cfg(ar, ar->debug.fw_dbglog_mask);
if (ret)
/* not serious */
ath10k_warn(ar, "failed to enable dbglog during start: %d",
ret);
}
if (ar->debug.pktlog_filter) {
ret = ath10k_wmi_pdev_pktlog_enable(ar,
ar->debug.pktlog_filter);
if (ret)
/* not serious */
ath10k_warn(ar,
"failed to enable pktlog filter %x: %d\n",
ar->debug.pktlog_filter, ret);
} else {
ret = ath10k_wmi_pdev_pktlog_disable(ar);
if (ret)
/* not serious */
ath10k_warn(ar, "failed to disable pktlog: %d\n", ret);
}
return ret;
}
void ath10k_debug_stop(struct ath10k *ar)
{
lockdep_assert_held(&ar->conf_mutex);
/* Must not use _sync to avoid deadlock, we do that in
* ath10k_debug_destroy(). The check for htt_stats_mask is to avoid
* warning from del_timer(). */
if (ar->debug.htt_stats_mask != 0)
cancel_delayed_work(&ar->debug.htt_stats_dwork);
ar->debug.htt_max_amsdu = 0;
ar->debug.htt_max_ampdu = 0;
ath10k_wmi_pdev_pktlog_disable(ar);
}
static ssize_t ath10k_write_simulate_radar(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
ieee80211_radar_detected(ar->hw);
return count;
}
static const struct file_operations fops_simulate_radar = {
.write = ath10k_write_simulate_radar,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#define ATH10K_DFS_STAT(s, p) (\
len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
ar->debug.dfs_stats.p))
#define ATH10K_DFS_POOL_STAT(s, p) (\
len += scnprintf(buf + len, size - len, "%-28s : %10u\n", s, \
ar->debug.dfs_pool_stats.p))
static ssize_t ath10k_read_dfs_stats(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
int retval = 0, len = 0;
const int size = 8000;
struct ath10k *ar = file->private_data;
char *buf;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
if (!ar->dfs_detector) {
len += scnprintf(buf + len, size - len, "DFS not enabled\n");
goto exit;
}
ar->debug.dfs_pool_stats =
ar->dfs_detector->get_stats(ar->dfs_detector);
len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n");
ATH10K_DFS_STAT("reported phy errors", phy_errors);
ATH10K_DFS_STAT("pulse events reported", pulses_total);
ATH10K_DFS_STAT("DFS pulses detected", pulses_detected);
ATH10K_DFS_STAT("DFS pulses discarded", pulses_discarded);
ATH10K_DFS_STAT("Radars detected", radar_detected);
len += scnprintf(buf + len, size - len, "Global Pool statistics:\n");
ATH10K_DFS_POOL_STAT("Pool references", pool_reference);
ATH10K_DFS_POOL_STAT("Pulses allocated", pulse_allocated);
ATH10K_DFS_POOL_STAT("Pulses alloc error", pulse_alloc_error);
ATH10K_DFS_POOL_STAT("Pulses in use", pulse_used);
ATH10K_DFS_POOL_STAT("Seqs. allocated", pseq_allocated);
ATH10K_DFS_POOL_STAT("Seqs. alloc error", pseq_alloc_error);
ATH10K_DFS_POOL_STAT("Seqs. in use", pseq_used);
exit:
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static const struct file_operations fops_dfs_stats = {
.read = ath10k_read_dfs_stats,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t ath10k_write_pktlog_filter(struct file *file,
const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
u32 filter;
int ret;
if (kstrtouint_from_user(ubuf, count, 0, &filter))
return -EINVAL;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON) {
ar->debug.pktlog_filter = filter;
ret = count;
goto out;
}
if (filter && (filter != ar->debug.pktlog_filter)) {
ret = ath10k_wmi_pdev_pktlog_enable(ar, filter);
if (ret) {
ath10k_warn(ar, "failed to enable pktlog filter %x: %d\n",
ar->debug.pktlog_filter, ret);
goto out;
}
} else {
ret = ath10k_wmi_pdev_pktlog_disable(ar);
if (ret) {
ath10k_warn(ar, "failed to disable pktlog: %d\n", ret);
goto out;
}
}
ar->debug.pktlog_filter = filter;
ret = count;
out:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static ssize_t ath10k_read_pktlog_filter(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
char buf[32];
struct ath10k *ar = file->private_data;
int len = 0;
mutex_lock(&ar->conf_mutex);
len = scnprintf(buf, sizeof(buf) - len, "%08x\n",
ar->debug.pktlog_filter);
mutex_unlock(&ar->conf_mutex);
return simple_read_from_buffer(ubuf, count, ppos, buf, len);
}
static const struct file_operations fops_pktlog_filter = {
.read = ath10k_read_pktlog_filter,
.write = ath10k_write_pktlog_filter,
.open = simple_open
};
int ath10k_debug_create(struct ath10k *ar)
{
ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
if (!ar->debug.fw_crash_data)
return -ENOMEM;
INIT_LIST_HEAD(&ar->debug.fw_stats.pdevs);
INIT_LIST_HEAD(&ar->debug.fw_stats.peers);
return 0;
}
void ath10k_debug_destroy(struct ath10k *ar)
{
vfree(ar->debug.fw_crash_data);
ar->debug.fw_crash_data = NULL;
ath10k_debug_fw_stats_reset(ar);
}
int ath10k_debug_register(struct ath10k *ar)
{
ar->debug.debugfs_phy = debugfs_create_dir("ath10k",
ar->hw->wiphy->debugfsdir);
if (IS_ERR_OR_NULL(ar->debug.debugfs_phy)) {
if (IS_ERR(ar->debug.debugfs_phy))
return PTR_ERR(ar->debug.debugfs_phy);
return -ENOMEM;
}
INIT_DELAYED_WORK(&ar->debug.htt_stats_dwork,
ath10k_debug_htt_stats_dwork);
init_completion(&ar->debug.fw_stats_complete);
debugfs_create_file("fw_stats", S_IRUSR, ar->debug.debugfs_phy, ar,
&fops_fw_stats);
debugfs_create_file("fw_reset_stats", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_fw_reset_stats);
debugfs_create_file("wmi_services", S_IRUSR, ar->debug.debugfs_phy, ar,
&fops_wmi_services);
debugfs_create_file("simulate_fw_crash", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_simulate_fw_crash);
debugfs_create_file("fw_crash_dump", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_fw_crash_dump);
debugfs_create_file("reg_addr", S_IRUSR | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_reg_addr);
debugfs_create_file("reg_value", S_IRUSR | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_reg_value);
debugfs_create_file("mem_value", S_IRUSR | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_mem_value);
debugfs_create_file("chip_id", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_chip_id);
debugfs_create_file("htt_stats_mask", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_htt_stats_mask);
debugfs_create_file("htt_max_amsdu_ampdu", S_IRUSR | S_IWUSR,
ar->debug.debugfs_phy, ar,
&fops_htt_max_amsdu_ampdu);
debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_fw_dbglog);
debugfs_create_file("cal_data", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_cal_data);
if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
debugfs_create_file("dfs_simulate_radar", S_IWUSR,
ar->debug.debugfs_phy, ar,
&fops_simulate_radar);
debugfs_create_bool("dfs_block_radar_events", S_IWUSR,
ar->debug.debugfs_phy,
&ar->dfs_block_radar_events);
debugfs_create_file("dfs_stats", S_IRUSR,
ar->debug.debugfs_phy, ar,
&fops_dfs_stats);
}
debugfs_create_file("pktlog_filter", S_IRUGO | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_pktlog_filter);
return 0;
}
void ath10k_debug_unregister(struct ath10k *ar)
{
cancel_delayed_work_sync(&ar->debug.htt_stats_dwork);
}
#endif /* CONFIG_ATH10K_DEBUGFS */
#ifdef CONFIG_ATH10K_DEBUG
void ath10k_dbg(struct ath10k *ar, enum ath10k_debug_mask mask,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
if (ath10k_debug_mask & mask)
dev_printk(KERN_DEBUG, ar->dev, "%pV", &vaf);
trace_ath10k_log_dbg(ar, mask, &vaf);
va_end(args);
}
EXPORT_SYMBOL(ath10k_dbg);
void ath10k_dbg_dump(struct ath10k *ar,
enum ath10k_debug_mask mask,
const char *msg, const char *prefix,
const void *buf, size_t len)
{
char linebuf[256];
unsigned int linebuflen;
const void *ptr;
if (ath10k_debug_mask & mask) {
if (msg)
ath10k_dbg(ar, mask, "%s\n", msg);
for (ptr = buf; (ptr - buf) < len; ptr += 16) {
linebuflen = 0;
linebuflen += scnprintf(linebuf + linebuflen,
sizeof(linebuf) - linebuflen,
"%s%08x: ",
(prefix ? prefix : ""),
(unsigned int)(ptr - buf));
hex_dump_to_buffer(ptr, len - (ptr - buf), 16, 1,
linebuf + linebuflen,
sizeof(linebuf) - linebuflen, true);
dev_printk(KERN_DEBUG, ar->dev, "%s\n", linebuf);
}
}
/* tracing code doesn't like null strings :/ */
trace_ath10k_log_dbg_dump(ar, msg ? msg : "", prefix ? prefix : "",
buf, len);
}
EXPORT_SYMBOL(ath10k_dbg_dump);
#endif /* CONFIG_ATH10K_DEBUG */
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