iwl_send_statistics_request(priv, CMD_ASYNC, false);
}
+
+static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
+ u32 start_idx, u32 num_events,
+ u32 mode)
+{
+ u32 i;
+ u32 ptr; /* SRAM byte address of log data */
+ u32 ev, time, data; /* event log data */
+ unsigned long reg_flags;
+
+ if (mode == 0)
+ ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
+ else
+ ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
+
+ /* Make sure device is powered up for SRAM reads */
+ spin_lock_irqsave(&priv->reg_lock, reg_flags);
+ if (iwl_grab_nic_access(priv)) {
+ spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
+ return;
+ }
+
+ /* Set starting address; reads will auto-increment */
+ _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
+ rmb();
+
+ /*
+ * "time" is actually "data" for mode 0 (no timestamp).
+ * place event id # at far right for easier visual parsing.
+ */
+ for (i = 0; i < num_events; i++) {
+ ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
+ time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
+ if (mode == 0) {
+ trace_iwlwifi_dev_ucode_cont_event(priv,
+ 0, time, ev);
+ } else {
+ data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
+ trace_iwlwifi_dev_ucode_cont_event(priv,
+ time, data, ev);
+ }
+ }
+ /* Allow device to power down */
+ iwl_release_nic_access(priv);
+ spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
+}
+
+void iwl_continuous_event_trace(struct iwl_priv *priv)
+{
+ u32 capacity; /* event log capacity in # entries */
+ u32 base; /* SRAM byte address of event log header */
+ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
+ u32 num_wraps; /* # times uCode wrapped to top of log */
+ u32 next_entry; /* index of next entry to be written by uCode */
+
+ if (priv->ucode_type == UCODE_INIT)
+ base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
+ else
+ base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+ if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
+ capacity = iwl_read_targ_mem(priv, base);
+ num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
+ mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
+ next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
+ } else
+ return;
+
+ if (num_wraps == priv->event_log.num_wraps) {
+ iwl_print_cont_event_trace(priv,
+ base, priv->event_log.next_entry,
+ next_entry - priv->event_log.next_entry,
+ mode);
+ priv->event_log.non_wraps_count++;
+ } else {
+ if ((num_wraps - priv->event_log.num_wraps) > 1)
+ priv->event_log.wraps_more_count++;
+ else
+ priv->event_log.wraps_once_count++;
+ trace_iwlwifi_dev_ucode_wrap_event(priv,
+ num_wraps - priv->event_log.num_wraps,
+ next_entry, priv->event_log.next_entry);
+ if (next_entry < priv->event_log.next_entry) {
+ iwl_print_cont_event_trace(priv, base,
+ priv->event_log.next_entry,
+ capacity - priv->event_log.next_entry,
+ mode);
+
+ iwl_print_cont_event_trace(priv, base, 0,
+ next_entry, mode);
+ } else {
+ iwl_print_cont_event_trace(priv, base,
+ next_entry, capacity - next_entry,
+ mode);
+
+ iwl_print_cont_event_trace(priv, base, 0,
+ next_entry, mode);
+ }
+ }
+ priv->event_log.num_wraps = num_wraps;
+ priv->event_log.next_entry = next_entry;
+}
+
+/**
+ * iwl_bg_ucode_trace - Timer callback to log ucode event
+ *
+ * The timer is continually set to execute every
+ * UCODE_TRACE_PERIOD milliseconds after the last timer expired
+ * this function is to perform continuous uCode event logging operation
+ * if enabled
+ */
+static void iwl_bg_ucode_trace(unsigned long data)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)data;
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ if (priv->event_log.ucode_trace) {
+ iwl_continuous_event_trace(priv);
+ /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
+ mod_timer(&priv->ucode_trace,
+ jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
+ }
+}
+
static void iwl_rx_beacon_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
priv->statistics_periodic.data = (unsigned long)priv;
priv->statistics_periodic.function = iwl_bg_statistics_periodic;
+ init_timer(&priv->ucode_trace);
+ priv->ucode_trace.data = (unsigned long)priv;
+ priv->ucode_trace.function = iwl_bg_ucode_trace;
+
if (!priv->cfg->use_isr_legacy)
tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
iwl_irq_tasklet, (unsigned long)priv);
cancel_delayed_work(&priv->alive_start);
cancel_work_sync(&priv->beacon_update);
del_timer_sync(&priv->statistics_periodic);
+ del_timer_sync(&priv->ucode_trace);
}
static void iwl_init_hw_rates(struct iwl_priv *priv,
struct dentry *file_clear_ucode_statistics;
struct dentry *file_clear_traffic_statistics;
struct dentry *file_csr;
+ struct dentry *file_ucode_tracing;
} dbgfs_debug_files;
u32 sram_offset;
u32 sram_len;
return count;
}
+static ssize_t iwl_dbgfs_ucode_tracing_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos) {
+
+ struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
+ int pos = 0;
+ char buf[128];
+ const size_t bufsz = sizeof(buf);
+ ssize_t ret;
+
+ pos += scnprintf(buf + pos, bufsz - pos, "ucode trace timer is %s\n",
+ priv->event_log.ucode_trace ? "On" : "Off");
+ pos += scnprintf(buf + pos, bufsz - pos, "non_wraps_count:\t\t %u\n",
+ priv->event_log.non_wraps_count);
+ pos += scnprintf(buf + pos, bufsz - pos, "wraps_once_count:\t\t %u\n",
+ priv->event_log.wraps_once_count);
+ pos += scnprintf(buf + pos, bufsz - pos, "wraps_more_count:\t\t %u\n",
+ priv->event_log.wraps_more_count);
+
+ ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+ return ret;
+}
+
+static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct iwl_priv *priv = file->private_data;
+ char buf[8];
+ int buf_size;
+ int trace;
+
+ memset(buf, 0, sizeof(buf));
+ buf_size = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+ if (sscanf(buf, "%d", &trace) != 1)
+ return -EFAULT;
+
+ if (trace) {
+ priv->event_log.ucode_trace = true;
+ /* schedule the ucode timer to occur in UCODE_TRACE_PERIOD */
+ mod_timer(&priv->ucode_trace,
+ jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
+ } else {
+ priv->event_log.ucode_trace = false;
+ del_timer_sync(&priv->ucode_trace);
+ }
+
+ return count;
+}
+
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
DEBUGFS_WRITE_FILE_OPS(clear_ucode_statistics);
DEBUGFS_WRITE_FILE_OPS(clear_traffic_statistics);
DEBUGFS_WRITE_FILE_OPS(csr);
+DEBUGFS_READ_WRITE_FILE_OPS(ucode_tracing);
/*
* Create the debugfs files and directories
DEBUGFS_ADD_FILE(ucode_general_stats, debug, S_IRUSR);
DEBUGFS_ADD_FILE(sensitivity, debug, S_IRUSR);
DEBUGFS_ADD_FILE(chain_noise, debug, S_IRUSR);
+ DEBUGFS_ADD_FILE(ucode_tracing, debug, S_IWUSR | S_IRUSR);
}
DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
file_sensitivity);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.
file_chain_noise);
+ DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.
+ file_ucode_tracing);
}
DEBUGFS_REMOVE(priv->dbgfs->dir_debug);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
__le16 channel;
};
+/*
+ * schedule the timer to wake up every UCODE_TRACE_PERIOD milliseconds
+ * to perform continuous uCode event logging operation if enabled
+ */
+#define UCODE_TRACE_PERIOD (100)
+
+/*
+ * iwl_event_log: current uCode event log position
+ *
+ * @ucode_trace: enable/disable ucode continuous trace timer
+ * @num_wraps: how many times the event buffer wraps
+ * @next_entry: the entry just before the next one that uCode would fill
+ * @non_wraps_count: counter for no wrap detected when dump ucode events
+ * @wraps_once_count: counter for wrap once detected when dump ucode events
+ * @wraps_more_count: counter for wrap more than once detected
+ * when dump ucode events
+ */
+struct iwl_event_log {
+ bool ucode_trace;
+ u32 num_wraps;
+ u32 next_entry;
+ int non_wraps_count;
+ int wraps_once_count;
+ int wraps_more_count;
+};
+
struct iwl_priv {
/* ieee device used by generic ieee processing code */
u32 disable_tx_power_cal;
struct work_struct run_time_calib_work;
struct timer_list statistics_periodic;
+ struct timer_list ucode_trace;
bool hw_ready;
/*For 3945*/
#define IWL_DEFAULT_TX_POWER 0x0F
struct iwl3945_notif_statistics statistics_39;
u32 sta_supp_rates;
+
+ struct iwl_event_log event_log;
}; /*iwl_priv */
static inline void iwl_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_rx);
EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_event);
EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_error);
+EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_cont_event);
+EXPORT_TRACEPOINT_SYMBOL(iwlwifi_dev_ucode_wrap_event);
#endif
TP_printk("[%p] write io[%#x] = %#x)", __entry->priv, __entry->offs, __entry->val)
);
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM iwlwifi_ucode
+
+TRACE_EVENT(iwlwifi_dev_ucode_cont_event,
+ TP_PROTO(struct iwl_priv *priv, u32 time, u32 data, u32 ev),
+ TP_ARGS(priv, time, data, ev),
+ TP_STRUCT__entry(
+ PRIV_ENTRY
+
+ __field(u32, time)
+ __field(u32, data)
+ __field(u32, ev)
+ ),
+ TP_fast_assign(
+ PRIV_ASSIGN;
+ __entry->time = time;
+ __entry->data = data;
+ __entry->ev = ev;
+ ),
+ TP_printk("[%p] EVT_LOGT:%010u:0x%08x:%04u",
+ __entry->priv, __entry->time, __entry->data, __entry->ev)
+);
+
+TRACE_EVENT(iwlwifi_dev_ucode_wrap_event,
+ TP_PROTO(struct iwl_priv *priv, u32 wraps, u32 n_entry, u32 p_entry),
+ TP_ARGS(priv, wraps, n_entry, p_entry),
+ TP_STRUCT__entry(
+ PRIV_ENTRY
+
+ __field(u32, wraps)
+ __field(u32, n_entry)
+ __field(u32, p_entry)
+ ),
+ TP_fast_assign(
+ PRIV_ASSIGN;
+ __entry->wraps = wraps;
+ __entry->n_entry = n_entry;
+ __entry->p_entry = p_entry;
+ ),
+ TP_printk("[%p] wraps=#%02d n=0x%X p=0x%X",
+ __entry->priv, __entry->wraps, __entry->n_entry,
+ __entry->p_entry)
+);
+
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi
projects / deliverable / linux.git / commitdiff
