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iwlwifi: on-screen event log dump
This feature enables the on-screen uCode event log dump. The original method will append the event log to syslog; with this capability, we also enable the user to write script to capture the events which provide additional flexibility to help uCode debugging Method 1) change to debugfs directory (sys/kernel/debug/phyX/iwlagn/data) 2) #cat log_event Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy
John W. Linville
parent
a9e1cb6a78
commit
b03d7d0fd3
@ -227,7 +227,8 @@ extern void iwl3945_rx_replenish(void *data);
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extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
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extern unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
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struct ieee80211_hdr *hdr,int left);
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extern void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log);
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extern int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
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char **buf, bool display);
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extern void iwl3945_dump_nic_error_log(struct iwl_priv *priv);
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/*
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@ -1832,8 +1832,9 @@ void iwl_dump_nic_error_log(struct iwl_priv *priv)
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* iwl_print_event_log - Dump error event log to syslog
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*
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*/
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static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
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u32 num_events, u32 mode)
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static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
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u32 num_events, u32 mode,
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int pos, char **buf, size_t bufsz)
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{
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u32 i;
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u32 base; /* SRAM byte address of event log header */
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@ -1843,7 +1844,7 @@ static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
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unsigned long reg_flags;
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if (num_events == 0)
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return;
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return pos;
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if (priv->ucode_type == UCODE_INIT)
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base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
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else
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@ -1871,27 +1872,44 @@ static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
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time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
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if (mode == 0) {
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/* data, ev */
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trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
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IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
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if (bufsz) {
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pos += scnprintf(*buf + pos, bufsz - pos,
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"EVT_LOG:0x%08x:%04u\n",
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time, ev);
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} else {
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trace_iwlwifi_dev_ucode_event(priv, 0,
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time, ev);
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IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
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time, ev);
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}
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} else {
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data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
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IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
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if (bufsz) {
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pos += scnprintf(*buf + pos, bufsz - pos,
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"EVT_LOGT:%010u:0x%08x:%04u\n",
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time, data, ev);
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} else {
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IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
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time, data, ev);
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trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
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trace_iwlwifi_dev_ucode_event(priv, time,
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data, ev);
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}
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}
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}
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/* Allow device to power down */
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iwl_release_nic_access(priv);
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spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
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return pos;
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}
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/**
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* iwl_print_last_event_logs - Dump the newest # of event log to syslog
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*/
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static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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u32 num_wraps, u32 next_entry,
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u32 size, u32 mode)
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static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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u32 num_wraps, u32 next_entry,
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u32 size, u32 mode,
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int pos, char **buf, size_t bufsz)
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{
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/*
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* display the newest DEFAULT_LOG_ENTRIES entries
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@ -1899,21 +1917,26 @@ static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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*/
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if (num_wraps) {
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if (next_entry < size) {
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iwl_print_event_log(priv,
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capacity - (size - next_entry),
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size - next_entry, mode);
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iwl_print_event_log(priv, 0,
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next_entry, mode);
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pos = iwl_print_event_log(priv,
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capacity - (size - next_entry),
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size - next_entry, mode,
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pos, buf, bufsz);
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pos = iwl_print_event_log(priv, 0,
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next_entry, mode,
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pos, buf, bufsz);
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} else
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iwl_print_event_log(priv, next_entry - size,
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size, mode);
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pos = iwl_print_event_log(priv, next_entry - size,
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size, mode, pos, buf, bufsz);
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} else {
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if (next_entry < size)
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iwl_print_event_log(priv, 0, next_entry, mode);
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else
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iwl_print_event_log(priv, next_entry - size,
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size, mode);
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if (next_entry < size) {
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pos = iwl_print_event_log(priv, 0, next_entry,
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mode, pos, buf, bufsz);
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} else {
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pos = iwl_print_event_log(priv, next_entry - size,
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size, mode, pos, buf, bufsz);
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}
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}
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return pos;
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}
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/* For sanity check only. Actual size is determined by uCode, typ. 512 */
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@ -1921,7 +1944,8 @@ static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
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void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
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char **buf, bool display)
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{
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u32 base; /* SRAM byte address of event log header */
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u32 capacity; /* event log capacity in # entries */
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@ -1929,6 +1953,8 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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u32 num_wraps; /* # times uCode wrapped to top of log */
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u32 next_entry; /* index of next entry to be written by uCode */
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u32 size; /* # entries that we'll print */
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int pos = 0;
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size_t bufsz = 0;
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if (priv->ucode_type == UCODE_INIT)
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base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
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@ -1939,7 +1965,7 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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IWL_ERR(priv,
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"Invalid event log pointer 0x%08X for %s uCode\n",
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base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
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return;
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return pos;
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}
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/* event log header */
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@ -1965,7 +1991,7 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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/* bail out if nothing in log */
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if (size == 0) {
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IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
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return;
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return pos;
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}
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#ifdef CONFIG_IWLWIFI_DEBUG
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@ -1980,6 +2006,15 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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size);
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#ifdef CONFIG_IWLWIFI_DEBUG
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if (display) {
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if (full_log)
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bufsz = capacity * 48;
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else
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bufsz = size * 48;
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*buf = kmalloc(bufsz, GFP_KERNEL);
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if (!*buf)
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return pos;
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}
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if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
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/*
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* if uCode has wrapped back to top of log,
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@ -1987,17 +2022,22 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
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* i.e the next one that uCode would fill.
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*/
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if (num_wraps)
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iwl_print_event_log(priv, next_entry,
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capacity - next_entry, mode);
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pos = iwl_print_event_log(priv, next_entry,
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capacity - next_entry, mode,
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pos, buf, bufsz);
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/* (then/else) start at top of log */
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iwl_print_event_log(priv, 0, next_entry, mode);
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pos = iwl_print_event_log(priv, 0,
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next_entry, mode, pos, buf, bufsz);
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} else
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iwl_print_last_event_logs(priv, capacity, num_wraps,
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next_entry, size, mode);
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pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
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next_entry, size, mode,
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pos, buf, bufsz);
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#else
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iwl_print_last_event_logs(priv, capacity, num_wraps,
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next_entry, size, mode);
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pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
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next_entry, size, mode,
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pos, buf, bufsz);
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#endif
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return pos;
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}
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/**
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@ -1365,7 +1365,7 @@ void iwl_irq_handle_error(struct iwl_priv *priv)
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priv->cfg->ops->lib->dump_nic_error_log(priv);
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if (priv->cfg->ops->lib->dump_csr)
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priv->cfg->ops->lib->dump_csr(priv);
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priv->cfg->ops->lib->dump_nic_event_log(priv, false);
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priv->cfg->ops->lib->dump_nic_event_log(priv, false, NULL, false);
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#ifdef CONFIG_IWLWIFI_DEBUG
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if (iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS)
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iwl_print_rx_config_cmd(priv);
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@ -169,7 +169,8 @@ struct iwl_lib_ops {
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int (*is_valid_rtc_data_addr)(u32 addr);
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/* 1st ucode load */
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int (*load_ucode)(struct iwl_priv *priv);
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void (*dump_nic_event_log)(struct iwl_priv *priv, bool full_log);
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int (*dump_nic_event_log)(struct iwl_priv *priv,
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bool full_log, char **buf, bool display);
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void (*dump_nic_error_log)(struct iwl_priv *priv);
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void (*dump_csr)(struct iwl_priv *priv);
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int (*set_channel_switch)(struct iwl_priv *priv, u16 channel);
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@ -582,7 +583,8 @@ int iwl_pci_resume(struct pci_dev *pdev);
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* Error Handling Debugging
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******************************************************/
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void iwl_dump_nic_error_log(struct iwl_priv *priv);
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void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log);
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int iwl_dump_nic_event_log(struct iwl_priv *priv,
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bool full_log, char **buf, bool display);
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void iwl_dump_csr(struct iwl_priv *priv);
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#ifdef CONFIG_IWLWIFI_DEBUG
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void iwl_print_rx_config_cmd(struct iwl_priv *priv);
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@ -420,6 +420,23 @@ static ssize_t iwl_dbgfs_nvm_read(struct file *file,
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return ret;
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}
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static ssize_t iwl_dbgfs_log_event_read(struct file *file,
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char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct iwl_priv *priv = file->private_data;
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char *buf;
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int pos = 0;
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ssize_t ret = -ENOMEM;
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pos = priv->cfg->ops->lib->dump_nic_event_log(priv, true, &buf, true);
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if (pos && buf) {
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ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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kfree(buf);
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}
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return ret;
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}
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static ssize_t iwl_dbgfs_log_event_write(struct file *file,
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const char __user *user_buf,
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size_t count, loff_t *ppos)
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@ -436,7 +453,8 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
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if (sscanf(buf, "%d", &event_log_flag) != 1)
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return -EFAULT;
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if (event_log_flag == 1)
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priv->cfg->ops->lib->dump_nic_event_log(priv, true);
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priv->cfg->ops->lib->dump_nic_event_log(priv, true,
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NULL, false);
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return count;
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}
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@ -859,7 +877,7 @@ static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file,
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}
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DEBUGFS_READ_WRITE_FILE_OPS(sram);
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DEBUGFS_WRITE_FILE_OPS(log_event);
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DEBUGFS_READ_WRITE_FILE_OPS(log_event);
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DEBUGFS_READ_FILE_OPS(nvm);
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DEBUGFS_READ_FILE_OPS(stations);
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DEBUGFS_READ_FILE_OPS(channels);
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@ -1965,7 +1983,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
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DEBUGFS_ADD_DIR(debug, dbgfs->dir_drv);
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DEBUGFS_ADD_FILE(nvm, data, S_IRUSR);
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DEBUGFS_ADD_FILE(sram, data, S_IWUSR | S_IRUSR);
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DEBUGFS_ADD_FILE(log_event, data, S_IWUSR);
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DEBUGFS_ADD_FILE(log_event, data, S_IWUSR | S_IRUSR);
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DEBUGFS_ADD_FILE(stations, data, S_IRUSR);
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DEBUGFS_ADD_FILE(channels, data, S_IRUSR);
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DEBUGFS_ADD_FILE(status, data, S_IRUSR);
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@ -1560,8 +1560,9 @@ void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
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* iwl3945_print_event_log - Dump error event log to syslog
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*
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*/
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static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
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u32 num_events, u32 mode)
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static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
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u32 num_events, u32 mode,
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int pos, char **buf, size_t bufsz)
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{
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u32 i;
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u32 base; /* SRAM byte address of event log header */
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@ -1571,7 +1572,7 @@ static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
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unsigned long reg_flags;
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if (num_events == 0)
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return;
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return pos;
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base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
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@ -1597,26 +1598,43 @@ static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
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time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
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if (mode == 0) {
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/* data, ev */
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IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
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trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
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if (bufsz) {
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pos += scnprintf(*buf + pos, bufsz - pos,
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"0x%08x:%04u\n",
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time, ev);
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} else {
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IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
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trace_iwlwifi_dev_ucode_event(priv, 0,
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time, ev);
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}
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} else {
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data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
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IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
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trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
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if (bufsz) {
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pos += scnprintf(*buf + pos, bufsz - pos,
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"%010u:0x%08x:%04u\n",
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time, data, ev);
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} else {
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IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
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time, data, ev);
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trace_iwlwifi_dev_ucode_event(priv, time,
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data, ev);
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}
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}
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}
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/* Allow device to power down */
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iwl_release_nic_access(priv);
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spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
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return pos;
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}
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/**
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* iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
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*/
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static void iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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u32 num_wraps, u32 next_entry,
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u32 size, u32 mode)
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u32 size, u32 mode,
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int pos, char **buf, size_t bufsz)
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{
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/*
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* display the newest DEFAULT_LOG_ENTRIES entries
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@ -1624,21 +1642,28 @@ static void iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
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*/
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if (num_wraps) {
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if (next_entry < size) {
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iwl3945_print_event_log(priv,
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capacity - (size - next_entry),
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size - next_entry, mode);
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iwl3945_print_event_log(priv, 0,
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next_entry, mode);
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pos = iwl3945_print_event_log(priv,
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capacity - (size - next_entry),
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size - next_entry, mode,
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pos, buf, bufsz);
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pos = iwl3945_print_event_log(priv, 0,
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next_entry, mode,
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pos, buf, bufsz);
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} else
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iwl3945_print_event_log(priv, next_entry - size,
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size, mode);
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pos = iwl3945_print_event_log(priv, next_entry - size,
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size, mode,
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pos, buf, bufsz);
|
||||
} else {
|
||||
if (next_entry < size)
|
||||
iwl3945_print_event_log(priv, 0, next_entry, mode);
|
||||
pos = iwl3945_print_event_log(priv, 0,
|
||||
next_entry, mode,
|
||||
pos, buf, bufsz);
|
||||
else
|
||||
iwl3945_print_event_log(priv, next_entry - size,
|
||||
size, mode);
|
||||
pos = iwl3945_print_event_log(priv, next_entry - size,
|
||||
size, mode,
|
||||
pos, buf, bufsz);
|
||||
}
|
||||
return pos;
|
||||
}
|
||||
|
||||
/* For sanity check only. Actual size is determined by uCode, typ. 512 */
|
||||
@ -1646,7 +1671,8 @@ static void iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
|
||||
|
||||
#define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
|
||||
|
||||
void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
|
||||
int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
|
||||
char **buf, bool display)
|
||||
{
|
||||
u32 base; /* SRAM byte address of event log header */
|
||||
u32 capacity; /* event log capacity in # entries */
|
||||
@ -1654,11 +1680,13 @@ void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
|
||||
u32 num_wraps; /* # times uCode wrapped to top of log */
|
||||
u32 next_entry; /* index of next entry to be written by uCode */
|
||||
u32 size; /* # entries that we'll print */
|
||||
int pos = 0;
|
||||
size_t bufsz = 0;
|
||||
|
||||
base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
|
||||
if (!iwl3945_hw_valid_rtc_data_addr(base)) {
|
||||
IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
|
||||
return;
|
||||
return pos;
|
||||
}
|
||||
|
||||
/* event log header */
|
||||
@ -1684,7 +1712,7 @@ void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
|
||||
/* bail out if nothing in log */
|
||||
if (size == 0) {
|
||||
IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
|
||||
return;
|
||||
return pos;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_IWLWIFI_DEBUG
|
||||
@ -1700,25 +1728,38 @@ void iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
|
||||
size);
|
||||
|
||||
#ifdef CONFIG_IWLWIFI_DEBUG
|
||||
if (display) {
|
||||
if (full_log)
|
||||
bufsz = capacity * 48;
|
||||
else
|
||||
bufsz = size * 48;
|
||||
*buf = kmalloc(bufsz, GFP_KERNEL);
|
||||
if (!*buf)
|
||||
return pos;
|
||||
}
|
||||
if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
|
||||
/* if uCode has wrapped back to top of log,
|
||||
* start at the oldest entry,
|
||||
* i.e the next one that uCode would fill.
|
||||
*/
|
||||
if (num_wraps)
|
||||
iwl3945_print_event_log(priv, next_entry,
|
||||
capacity - next_entry, mode);
|
||||
pos = iwl3945_print_event_log(priv, next_entry,
|
||||
capacity - next_entry, mode,
|
||||
pos, buf, bufsz);
|
||||
|
||||
/* (then/else) start at top of log */
|
||||
iwl3945_print_event_log(priv, 0, next_entry, mode);
|
||||
pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
|
||||
pos, buf, bufsz);
|
||||
} else
|
||||
iwl3945_print_last_event_logs(priv, capacity, num_wraps,
|
||||
next_entry, size, mode);
|
||||
pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
|
||||
next_entry, size, mode,
|
||||
pos, buf, bufsz);
|
||||
#else
|
||||
iwl3945_print_last_event_logs(priv, capacity, num_wraps,
|
||||
next_entry, size, mode);
|
||||
pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
|
||||
next_entry, size, mode,
|
||||
pos, buf, bufsz);
|
||||
#endif
|
||||
|
||||
return pos;
|
||||
}
|
||||
|
||||
static void iwl3945_irq_tasklet(struct iwl_priv *priv)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user