diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/debugfs.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/debugfs.c b/drivers/net/wireless/ath/ath11k/debugfs.c index c0ebdb1262f0..a82266c8befc 100644 --- a/drivers/net/wireless/ath/ath11k/debugfs.c +++ b/drivers/net/wireless/ath/ath11k/debugfs.c @@ -52,6 +52,45 @@ static const char *htt_bp_lmac_ring[HTT_SW_LMAC_RING_IDX_MAX] = { "MONITOR_DEST_RING", }; +void ath11k_debugfs_add_dbring_entry(struct ath11k *ar, + enum wmi_direct_buffer_module id, + enum ath11k_dbg_dbr_event event, + struct hal_srng *srng) +{ + struct ath11k_debug_dbr *dbr_debug; + struct ath11k_dbg_dbr_data *dbr_data; + struct ath11k_dbg_dbr_entry *entry; + + if (id >= WMI_DIRECT_BUF_MAX || event >= ATH11K_DBG_DBR_EVENT_MAX) + return; + + dbr_debug = ar->debug.dbr_debug[id]; + if (!dbr_debug) + return; + + if (!dbr_debug->dbr_debug_enabled) + return; + + dbr_data = &dbr_debug->dbr_dbg_data; + + spin_lock_bh(&dbr_data->lock); + + if (dbr_data->entries) { + entry = &dbr_data->entries[dbr_data->dbr_debug_idx]; + entry->hp = srng->u.src_ring.hp; + entry->tp = *srng->u.src_ring.tp_addr; + entry->timestamp = jiffies; + entry->event = event; + + dbr_data->dbr_debug_idx++; + if (dbr_data->dbr_debug_idx == + dbr_data->num_ring_debug_entries) + dbr_data->dbr_debug_idx = 0; + } + + spin_unlock_bh(&dbr_data->lock); +} + static void ath11k_fw_stats_pdevs_free(struct list_head *head) { struct ath11k_fw_stats_pdev *i, *tmp; @@ -1176,6 +1215,169 @@ static const struct file_operations fops_simulate_radar = { .open = simple_open }; +static ssize_t ath11k_debug_dump_dbr_entries(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath11k_dbg_dbr_data *dbr_dbg_data = file->private_data; + static const char * const event_id_to_string[] = {"empty", "Rx", "Replenish"}; + int size = ATH11K_DEBUG_DBR_ENTRIES_MAX * 100; + char *buf; + int i, ret; + int len = 0; + + buf = kzalloc(size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += scnprintf(buf + len, size - len, + "-----------------------------------------\n"); + len += scnprintf(buf + len, size - len, + "| idx | hp | tp | timestamp | event |\n"); + len += scnprintf(buf + len, size - len, + "-----------------------------------------\n"); + + spin_lock_bh(&dbr_dbg_data->lock); + + for (i = 0; i < dbr_dbg_data->num_ring_debug_entries; i++) { + len += scnprintf(buf + len, size - len, + "|%4u|%8u|%8u|%11llu|%8s|\n", i, + dbr_dbg_data->entries[i].hp, + dbr_dbg_data->entries[i].tp, + dbr_dbg_data->entries[i].timestamp, + event_id_to_string[dbr_dbg_data->entries[i].event]); + } + + spin_unlock_bh(&dbr_dbg_data->lock); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static const struct file_operations fops_debug_dump_dbr_entries = { + .read = ath11k_debug_dump_dbr_entries, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + +static void ath11k_debugfs_dbr_dbg_destroy(struct ath11k *ar, int dbr_id) +{ + struct ath11k_debug_dbr *dbr_debug; + struct ath11k_dbg_dbr_data *dbr_dbg_data; + + if (!ar->debug.dbr_debug[dbr_id]) + return; + + dbr_debug = ar->debug.dbr_debug[dbr_id]; + dbr_dbg_data = &dbr_debug->dbr_dbg_data; + + debugfs_remove_recursive(dbr_debug->dbr_debugfs); + kfree(dbr_dbg_data->entries); + kfree(dbr_debug); + ar->debug.dbr_debug[dbr_id] = NULL; +} + +static int ath11k_debugfs_dbr_dbg_init(struct ath11k *ar, int dbr_id) +{ + struct ath11k_debug_dbr *dbr_debug; + struct ath11k_dbg_dbr_data *dbr_dbg_data; + static const char * const dbr_id_to_str[] = {"spectral", "CFR"}; + + if (ar->debug.dbr_debug[dbr_id]) + return 0; + + ar->debug.dbr_debug[dbr_id] = kzalloc(sizeof(*dbr_debug), + GFP_KERNEL); + + if (!ar->debug.dbr_debug[dbr_id]) + return -ENOMEM; + + dbr_debug = ar->debug.dbr_debug[dbr_id]; + dbr_dbg_data = &dbr_debug->dbr_dbg_data; + + if (dbr_debug->dbr_debugfs) + return 0; + + dbr_debug->dbr_debugfs = debugfs_create_dir(dbr_id_to_str[dbr_id], + ar->debug.debugfs_pdev); + if (IS_ERR_OR_NULL(dbr_debug->dbr_debugfs)) { + if (IS_ERR(dbr_debug->dbr_debugfs)) + return PTR_ERR(dbr_debug->dbr_debugfs); + return -ENOMEM; + } + + dbr_debug->dbr_debug_enabled = true; + dbr_dbg_data->num_ring_debug_entries = ATH11K_DEBUG_DBR_ENTRIES_MAX; + dbr_dbg_data->dbr_debug_idx = 0; + dbr_dbg_data->entries = kcalloc(ATH11K_DEBUG_DBR_ENTRIES_MAX, + sizeof(struct ath11k_dbg_dbr_entry), + GFP_KERNEL); + if (!dbr_dbg_data->entries) + return -ENOMEM; + + spin_lock_init(&dbr_dbg_data->lock); + + debugfs_create_file("dump_dbr_debug", 0444, dbr_debug->dbr_debugfs, + dbr_dbg_data, &fops_debug_dump_dbr_entries); + + return 0; +} + +static ssize_t ath11k_debugfs_write_enable_dbr_dbg(struct file *file, + const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct ath11k *ar = file->private_data; + char buf[32] = {0}; + u32 dbr_id, enable; + int ret; + + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH11K_STATE_ON) { + ret = -ENETDOWN; + goto out; + } + + ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, ubuf, count); + if (ret < 0) + goto out; + + buf[ret] = '\0'; + ret = sscanf(buf, "%u %u", &dbr_id, &enable); + if (ret != 2 || dbr_id > 1 || enable > 1) { + ret = -EINVAL; + ath11k_warn(ar->ab, "usage: echo <dbr_id> <val> dbr_id:0-Spectral 1-CFR val:0-disable 1-enable\n"); + goto out; + } + + if (enable) { + ret = ath11k_debugfs_dbr_dbg_init(ar, dbr_id); + if (ret) { + ath11k_warn(ar->ab, "db ring module debugfs init failed: %d\n", + ret); + goto out; + } + } else { + ath11k_debugfs_dbr_dbg_destroy(ar, dbr_id); + } + + ret = count; +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static const struct file_operations fops_dbr_debug = { + .write = ath11k_debugfs_write_enable_dbr_dbg, + .open = simple_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + int ath11k_debugfs_register(struct ath11k *ar) { struct ath11k_base *ab = ar->ab; @@ -1218,11 +1420,30 @@ int ath11k_debugfs_register(struct ath11k *ar) &ar->dfs_block_radar_events); } + if (ab->hw_params.dbr_debug_support) + debugfs_create_file("enable_dbr_debug", 0200, ar->debug.debugfs_pdev, + ar, &fops_dbr_debug); + return 0; } void ath11k_debugfs_unregister(struct ath11k *ar) { + struct ath11k_debug_dbr *dbr_debug; + struct ath11k_dbg_dbr_data *dbr_dbg_data; + int i; + + for (i = 0; i < WMI_DIRECT_BUF_MAX; i++) { + dbr_debug = ar->debug.dbr_debug[i]; + if (!dbr_debug) + continue; + + dbr_dbg_data = &dbr_debug->dbr_dbg_data; + kfree(dbr_dbg_data->entries); + debugfs_remove_recursive(dbr_debug->dbr_debugfs); + kfree(dbr_debug); + ar->debug.dbr_debug[i] = NULL; + } } static ssize_t ath11k_write_twt_add_dialog(struct file *file, |