1 files changed, 185 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 00457bff1ed1..cdc07c477457 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1526,6 +1526,191 @@ static int iwl_read_ucode(struct iwl_priv *priv)
         return ret;
 }
 
+#ifdef CONFIG_IWLWIFI_DEBUG
+static const char *desc_lookup_text[] = {
+        "OK",
+        "FAIL",
+        "BAD_PARAM",
+        "BAD_CHECKSUM",
+        "NMI_INTERRUPT_WDG",
+        "SYSASSERT",
+        "FATAL_ERROR",
+        "BAD_COMMAND",
+        "HW_ERROR_TUNE_LOCK",
+        "HW_ERROR_TEMPERATURE",
+        "ILLEGAL_CHAN_FREQ",
+        "VCC_NOT_STABLE",
+        "FH_ERROR",
+        "NMI_INTERRUPT_HOST",
+        "NMI_INTERRUPT_ACTION_PT",
+        "NMI_INTERRUPT_UNKNOWN",
+        "UCODE_VERSION_MISMATCH",
+        "HW_ERROR_ABS_LOCK",
+        "HW_ERROR_CAL_LOCK_FAIL",
+        "NMI_INTERRUPT_INST_ACTION_PT",
+        "NMI_INTERRUPT_DATA_ACTION_PT",
+        "NMI_TRM_HW_ER",
+        "NMI_INTERRUPT_TRM",
+        "NMI_INTERRUPT_BREAK_POINT"
+        "DEBUG_0",
+        "DEBUG_1",
+        "DEBUG_2",
+        "DEBUG_3",
+        "UNKNOWN"
+};
+
+static const char *desc_lookup(int i)
+{
+        int max = ARRAY_SIZE(desc_lookup_text) - 1;
+
+        if (i < 0 || i > max)
+                i = max;
+
+        return desc_lookup_text[i];
+}
+
+#define ERROR_START_OFFSET  (1 * sizeof(u32))
+#define ERROR_ELEM_SIZE     (7 * sizeof(u32))
+
+void iwl_dump_nic_error_log(struct iwl_priv *priv)
+{
+        u32 data2, line;
+        u32 desc, time, count, base, data1;
+        u32 blink1, blink2, ilink1, ilink2;
+
+        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.error_event_table_ptr);
+
+        if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
+                IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
+                return;
+        }
+
+        count = iwl_read_targ_mem(priv, base);
+
+        if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
+                IWL_ERR(priv, "Start IWL Error Log Dump:\n");
+                IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
+                        priv->status, count);
+        }
+
+        desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
+        blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
+        blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
+        ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
+        ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
+        data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
+        data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
+        line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
+        time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
+
+        IWL_ERR(priv, "Desc                               Time       "
+                "data1      data2      line\n");
+        IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
+                desc_lookup(desc), desc, time, data1, data2, line);
+        IWL_ERR(priv, "blink1  blink2  ilink1  ilink2\n");
+        IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
+                ilink1, ilink2);
+
+}
+
+#define EVENT_START_OFFSET  (4 * sizeof(u32))
+
+/**
+ * iwl_print_event_log - Dump error event log to syslog
+ *
+ */
+static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
+                                u32 num_events, u32 mode)
+{
+        u32 i;
+        u32 base;       /* SRAM byte address of event log header */
+        u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
+        u32 ptr;        /* SRAM byte address of log data */
+        u32 ev, time, data; /* event log data */
+
+        if (num_events == 0)
+                return;
+        if (priv->ucode_type == UCODE_INIT)
+                base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
+        else
+                base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
+
+        if (mode == 0)
+                event_size = 2 * sizeof(u32);
+        else
+                event_size = 3 * sizeof(u32);
+
+        ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
+
+        /* "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_targ_mem(priv, ptr);
+                ptr += sizeof(u32);
+                time = iwl_read_targ_mem(priv, ptr);
+                ptr += sizeof(u32);
+                if (mode == 0) {
+                        /* data, ev */
+                        IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
+                } else {
+                        data = iwl_read_targ_mem(priv, ptr);
+                        ptr += sizeof(u32);
+                        IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
+                                        time, data, ev);
+                }
+        }
+}
+
+void iwl_dump_nic_event_log(struct iwl_priv *priv)
+{
+        u32 base;       /* SRAM byte address of event log header */
+        u32 capacity;   /* event log capacity in # entries */
+        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 */
+        u32 size;       /* # entries that we'll print */
+
+        if (priv->ucode_type == UCODE_INIT)
+                base = le32_to_cpu(priv->card_alive_init.log_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)) {
+                IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
+                return;
+        }
+
+        /* event log header */
+        capacity = iwl_read_targ_mem(priv, base);
+        mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
+        num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
+        next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
+
+        size = num_wraps ? capacity : next_entry;
+
+        /* bail out if nothing in log */
+        if (size == 0) {
+                IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
+                return;
+        }
+
+        IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
+                        size, num_wraps);
+
+        /* 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)
+                iwl_print_event_log(priv, next_entry,
+                                        capacity - next_entry, mode);
+        /* (then/else) start at top of log */
+        iwl_print_event_log(priv, 0, next_entry, mode);
+
+}
+#endif
+
 /**
  * iwl_alive_start - called after REPLY_ALIVE notification received
  *                   from protocol/runtime uCode (initialization uCode's