/* * 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 #include #include #include #include #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\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_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, }; void ath10k_debug_fw_stats_process(struct ath10k *ar, struct sk_buff *skb) { int ret; spin_lock_bh(&ar->data_lock); ret = ath10k_wmi_pull_fw_stats(ar, skb, &ar->debug.fw_stats); if (ret) { ath10k_warn(ar, "failed to pull fw stats: %d\n", ret); goto unlock; } complete(&ar->debug.fw_stats_complete); unlock: spin_unlock_bh(&ar->data_lock); } static int ath10k_fw_stats_request(struct ath10k *ar) { int ret; lockdep_assert_held(&ar->conf_mutex); ret = ath10k_wmi_request_stats(ar, WMI_REQUEST_PEER_STAT); if (ret) { ath10k_warn(ar, "failed to fw stat request command: %d\n", ret); return ret; } ret = wait_for_completion_timeout(&ar->debug.fw_stats_complete, 1*HZ); if (ret <= 0) return -ETIMEDOUT; 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; int i; spin_lock_bh(&ar->data_lock); 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", fw_stats->ch_noise_floor); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "Channel TX power", fw_stats->chan_tx_power); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "TX frame count", fw_stats->tx_frame_count); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "RX frame count", fw_stats->rx_frame_count); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "RX clear count", fw_stats->rx_clear_count); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "Cycle count", fw_stats->cycle_count); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "PHY error count", fw_stats->phy_err_count); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "RTS bad count", fw_stats->rts_bad); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "RTS good count", fw_stats->rts_good); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "FCS bad count", fw_stats->fcs_bad); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "No beacon count", fw_stats->no_beacons); len += scnprintf(buf + len, buf_len - len, "%30s %10u\n", "MIB int count", fw_stats->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", fw_stats->comp_queued); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "HTT cookies disp.", fw_stats->comp_delivered); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MSDU queued", fw_stats->msdu_enqued); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDU queued", fw_stats->mpdu_enqued); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MSDUs dropped", fw_stats->wmm_drop); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Local enqued", fw_stats->local_enqued); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Local freed", fw_stats->local_freed); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "HW queued", fw_stats->hw_queued); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PPDUs reaped", fw_stats->hw_reaped); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Num underruns", fw_stats->underrun); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PPDUs cleaned", fw_stats->tx_abort); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDUs requed", fw_stats->mpdus_requed); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Excessive retries", fw_stats->tx_ko); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "HW rate", fw_stats->data_rc); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Sched self tiggers", fw_stats->self_triggers); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Dropped due to SW retries", fw_stats->sw_retry_failure); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Illegal rate phy errors", fw_stats->illgl_rate_phy_err); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Pdev continous xretry", fw_stats->pdev_cont_xretry); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "TX timeout", fw_stats->pdev_tx_timeout); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PDEV resets", fw_stats->pdev_resets); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PHY underrun", fw_stats->phy_underrun); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDU is more than txop limit", fw_stats->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", fw_stats->mid_ppdu_route_change); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Tot. number of statuses", fw_stats->status_rcvd); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Extra frags on rings 0", fw_stats->r0_frags); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Extra frags on rings 1", fw_stats->r1_frags); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Extra frags on rings 2", fw_stats->r2_frags); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Extra frags on rings 3", fw_stats->r3_frags); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MSDUs delivered to HTT", fw_stats->htt_msdus); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDUs delivered to HTT", fw_stats->htt_mpdus); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MSDUs delivered to stack", fw_stats->loc_msdus); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDUs delivered to stack", fw_stats->loc_mpdus); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "Oversized AMSUs", fw_stats->oversize_amsdu); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PHY errors", fw_stats->phy_errs); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "PHY errors drops", fw_stats->phy_err_drop); len += scnprintf(buf + len, buf_len - len, "%30s %10d\n", "MPDU errors (FCS, MIC, ENC)", fw_stats->mpdu_errs); len += scnprintf(buf + len, buf_len - len, "\n"); len += scnprintf(buf + len, buf_len - len, "%30s (%d)\n", "ath10k PEER stats", fw_stats->peers); len += scnprintf(buf + len, buf_len - len, "%30s\n\n", "================="); for (i = 0; i < fw_stats->peers; i++) { len += scnprintf(buf + len, buf_len - len, "%30s %pM\n", "Peer MAC address", fw_stats->peer_stat[i].peer_macaddr); len += scnprintf(buf + len, buf_len - len, "%30s %u\n", "Peer RSSI", fw_stats->peer_stat[i].peer_rssi); len += scnprintf(buf + len, buf_len - len, "%30s %u\n", "Peer TX rate", fw_stats->peer_stat[i].peer_tx_rate); len += scnprintf(buf + len, buf_len - len, "%30s %u\n", "Peer RX rate", fw_stats->peer_stat[i].peer_rx_rate); len += scnprintf(buf + len, buf_len - len, "\n"); } 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_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, }; /* 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"; 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 { 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 = cpu_to_le32(LINUX_VERSION_CODE); strlcpy(dump_data->kernel_ver, VERMAGIC_STRING, 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 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, &du); 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; } 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); } return 0; } 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; } 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, }; 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; return 0; } void ath10k_debug_destroy(struct ath10k *ar) { vfree(ar->debug.fw_crash_data); ar->debug.fw_crash_data = NULL; } 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("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("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); } 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 */