Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[safe/jmp/linux-2.6] / drivers / net / wireless / iwlwifi / iwl-agn.c
index 1c9866d..bdff565 100644 (file)
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/slab.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
 #define VD
 #endif
 
-#ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
-#define VS "s"
-#else
-#define VS
-#endif
-
-#define DRV_VERSION     IWLWIFI_VERSION VD VS
+#define DRV_VERSION     IWLWIFI_VERSION VD
 
 
 MODULE_DESCRIPTION(DRV_DESCRIPTION);
@@ -203,7 +198,8 @@ int iwl_commit_rxon(struct iwl_priv *priv)
        priv->start_calib = 0;
 
        /* Add the broadcast address so we can send broadcast frames */
-       iwl_add_bcast_station(priv);
+       priv->cfg->ops->lib->add_bcast_station(priv);
+
 
        /* If we have set the ASSOC_MSK and we are in BSS mode then
         * add the IWL_AP_ID to the station rate table */
@@ -657,6 +653,131 @@ static void iwl_bg_statistics_periodic(unsigned long data)
        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);
+}
+
+static 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)
 {
@@ -689,12 +810,14 @@ static void iwl_rx_card_state_notif(struct iwl_priv *priv,
        u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
        unsigned long status = priv->status;
 
-       IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
+       IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
                          (flags & HW_CARD_DISABLED) ? "Kill" : "On",
-                         (flags & SW_CARD_DISABLED) ? "Kill" : "On");
+                         (flags & SW_CARD_DISABLED) ? "Kill" : "On",
+                         (flags & CT_CARD_DISABLED) ?
+                         "Reached" : "Not reached");
 
        if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
-                    RF_CARD_DISABLED)) {
+                    CT_CARD_DISABLED)) {
 
                iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
                            CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
@@ -708,10 +831,10 @@ static void iwl_rx_card_state_notif(struct iwl_priv *priv,
                        iwl_write_direct32(priv, HBUS_TARG_MBX_C,
                                        HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
                }
-               if (flags & RF_CARD_DISABLED)
+               if (flags & CT_CARD_DISABLED)
                        iwl_tt_enter_ct_kill(priv);
        }
-       if (!(flags & RF_CARD_DISABLED))
+       if (!(flags & CT_CARD_DISABLED))
                iwl_tt_exit_ct_kill(priv);
 
        if (flags & HW_CARD_DISABLED)
@@ -761,6 +884,8 @@ static void iwl_setup_rx_handlers(struct iwl_priv *priv)
        priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
        priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
        priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
+       priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
+                       iwl_rx_spectrum_measure_notif;
        priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
        priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
            iwl_rx_pm_debug_statistics_notif;
@@ -774,7 +899,6 @@ static void iwl_setup_rx_handlers(struct iwl_priv *priv)
        priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
        priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
 
-       iwl_setup_spectrum_handlers(priv);
        iwl_setup_rx_scan_handlers(priv);
 
        /* status change handler */
@@ -1135,7 +1259,15 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
        /* Ack/clear/reset pending uCode interrupts.
         * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
         */
-       iwl_write32(priv, CSR_INT, priv->inta);
+       /* There is a hardware bug in the interrupt mask function that some
+        * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
+        * they are disabled in the CSR_INT_MASK register. Furthermore the
+        * ICT interrupt handling mechanism has another bug that might cause
+        * these unmasked interrupts fail to be detected. We workaround the
+        * hardware bugs here by ACKing all the possible interrupts so that
+        * interrupt coalescing can still be achieved.
+        */
+       iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask);
 
        inta = priv->inta;
 
@@ -1340,59 +1472,66 @@ static void iwl_nic_start(struct iwl_priv *priv)
 }
 
 
+static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
+static int iwl_mac_setup_register(struct iwl_priv *priv);
+
+static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
+{
+       const char *name_pre = priv->cfg->fw_name_pre;
+
+       if (first)
+               priv->fw_index = priv->cfg->ucode_api_max;
+       else
+               priv->fw_index--;
+
+       if (priv->fw_index < priv->cfg->ucode_api_min) {
+               IWL_ERR(priv, "no suitable firmware found!\n");
+               return -ENOENT;
+       }
+
+       sprintf(priv->firmware_name, "%s%d%s",
+               name_pre, priv->fw_index, ".ucode");
+
+       IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n",
+                      priv->firmware_name);
+
+       return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
+                                      &priv->pci_dev->dev, GFP_KERNEL, priv,
+                                      iwl_ucode_callback);
+}
+
 /**
- * iwl_read_ucode - Read uCode images from disk file.
+ * iwl_ucode_callback - callback when firmware was loaded
  *
- * Copy into buffers for card to fetch via bus-mastering
+ * If loaded successfully, copies the firmware into buffers
+ * for the card to fetch (via DMA).
  */
-static int iwl_read_ucode(struct iwl_priv *priv)
+static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 {
+       struct iwl_priv *priv = context;
        struct iwl_ucode_header *ucode;
-       int ret = -EINVAL, index;
-       const struct firmware *ucode_raw;
-       const char *name_pre = priv->cfg->fw_name_pre;
        const unsigned int api_max = priv->cfg->ucode_api_max;
        const unsigned int api_min = priv->cfg->ucode_api_min;
-       char buf[25];
        u8 *src;
        size_t len;
        u32 api_ver, build;
        u32 inst_size, data_size, init_size, init_data_size, boot_size;
+       int err;
        u16 eeprom_ver;
 
-       /* Ask kernel firmware_class module to get the boot firmware off disk.
-        * request_firmware() is synchronous, file is in memory on return. */
-       for (index = api_max; index >= api_min; index--) {
-               sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
-               ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
-               if (ret < 0) {
-                       IWL_ERR(priv, "%s firmware file req failed: %d\n",
-                                 buf, ret);
-                       if (ret == -ENOENT)
-                               continue;
-                       else
-                               goto error;
-               } else {
-                       if (index < api_max)
-                               IWL_ERR(priv, "Loaded firmware %s, "
-                                       "which is deprecated. "
-                                       "Please use API v%u instead.\n",
-                                         buf, api_max);
-
-                       IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
-                                      buf, ucode_raw->size);
-                       break;
-               }
+       if (!ucode_raw) {
+               IWL_ERR(priv, "request for firmware file '%s' failed.\n",
+                       priv->firmware_name);
+               goto try_again;
        }
 
-       if (ret < 0)
-               goto error;
+       IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
+                      priv->firmware_name, ucode_raw->size);
 
        /* Make sure that we got at least the v1 header! */
        if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
                IWL_ERR(priv, "File size way too small!\n");
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
 
        /* Data from ucode file:  header followed by uCode images */
@@ -1417,10 +1556,9 @@ static int iwl_read_ucode(struct iwl_priv *priv)
                IWL_ERR(priv, "Driver unable to support your firmware API. "
                          "Driver supports v%u, firmware is v%u.\n",
                          api_max, api_ver);
-               priv->ucode_ver = 0;
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
+
        if (api_ver != api_max)
                IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
                          "got v%u. New firmware can be obtained "
@@ -1462,6 +1600,12 @@ static int iwl_read_ucode(struct iwl_priv *priv)
        IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
                       boot_size);
 
+       /*
+        * For any of the failures below (before allocating pci memory)
+        * we will try to load a version with a smaller API -- maybe the
+        * user just got a corrupted version of the latest API.
+        */
+
        /* Verify size of file vs. image size info in file's header */
        if (ucode_raw->size !=
                priv->cfg->ops->ucode->get_header_size(api_ver) +
@@ -1471,41 +1615,35 @@ static int iwl_read_ucode(struct iwl_priv *priv)
                IWL_DEBUG_INFO(priv,
                        "uCode file size %d does not match expected size\n",
                        (int)ucode_raw->size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
 
        /* Verify that uCode images will fit in card's SRAM */
        if (inst_size > priv->hw_params.max_inst_size) {
                IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
                               inst_size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
 
        if (data_size > priv->hw_params.max_data_size) {
                IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
                                data_size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
        if (init_size > priv->hw_params.max_inst_size) {
                IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
                        init_size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
        if (init_data_size > priv->hw_params.max_data_size) {
                IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
                      init_data_size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
        if (boot_size > priv->hw_params.max_bsm_size) {
                IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
                        boot_size);
-               ret = -EINVAL;
-               goto err_release;
+               goto try_again;
        }
 
        /* Allocate ucode buffers for card's bus-master loading ... */
@@ -1589,20 +1727,36 @@ static int iwl_read_ucode(struct iwl_priv *priv)
        IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
        memcpy(priv->ucode_boot.v_addr, src, len);
 
+       /**************************************************
+        * This is still part of probe() in a sense...
+        *
+        * 9. Setup and register with mac80211 and debugfs
+        **************************************************/
+       err = iwl_mac_setup_register(priv);
+       if (err)
+               goto out_unbind;
+
+       err = iwl_dbgfs_register(priv, DRV_NAME);
+       if (err)
+               IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
+
        /* We have our copies now, allow OS release its copies */
        release_firmware(ucode_raw);
-       return 0;
+       return;
+
+ try_again:
+       /* try next, if any */
+       if (iwl_request_firmware(priv, false))
+               goto out_unbind;
+       release_firmware(ucode_raw);
+       return;
 
  err_pci_alloc:
        IWL_ERR(priv, "failed to allocate pci memory\n");
-       ret = -ENOMEM;
        iwl_dealloc_ucode_pci(priv);
-
- err_release:
+ out_unbind:
+       device_release_driver(&priv->pci_dev->dev);
        release_firmware(ucode_raw);
-
- error:
-       return ret;
 }
 
 static const char *desc_lookup_text[] = {
@@ -1634,7 +1788,7 @@ static const char *desc_lookup_text[] = {
        "DEBUG_1",
        "DEBUG_2",
        "DEBUG_3",
-       "UNKNOWN"
+       "ADVANCED SYSASSERT"
 };
 
 static const char *desc_lookup(int i)
@@ -1705,8 +1859,9 @@ void iwl_dump_nic_error_log(struct iwl_priv *priv)
  * 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)
+static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
+                              u32 num_events, u32 mode,
+                              int pos, char **buf, size_t bufsz)
 {
        u32 i;
        u32 base;       /* SRAM byte address of event log header */
@@ -1716,7 +1871,7 @@ static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
        unsigned long reg_flags;
 
        if (num_events == 0)
-               return;
+               return pos;
        if (priv->ucode_type == UCODE_INIT)
                base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
        else
@@ -1744,27 +1899,44 @@ static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
                time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
                if (mode == 0) {
                        /* data, ev */
-                       trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
-                       IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
+                       if (bufsz) {
+                               pos += scnprintf(*buf + pos, bufsz - pos,
+                                               "EVT_LOG:0x%08x:%04u\n",
+                                               time, ev);
+                       } else {
+                               trace_iwlwifi_dev_ucode_event(priv, 0,
+                                       time, ev);
+                               IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
+                                       time, ev);
+                       }
                } else {
                        data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
-                       IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
+                       if (bufsz) {
+                               pos += scnprintf(*buf + pos, bufsz - pos,
+                                               "EVT_LOGT:%010u:0x%08x:%04u\n",
+                                                time, data, ev);
+                       } else {
+                               IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
                                        time, data, ev);
-                       trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
+                               trace_iwlwifi_dev_ucode_event(priv, time,
+                                       data, ev);
+                       }
                }
        }
 
        /* Allow device to power down */
        iwl_release_nic_access(priv);
        spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
+       return pos;
 }
 
 /**
  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
  */
-static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
-                                     u32 num_wraps, u32 next_entry,
-                                     u32 size, u32 mode)
+static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
+                                   u32 num_wraps, u32 next_entry,
+                                   u32 size, u32 mode,
+                                   int pos, char **buf, size_t bufsz)
 {
        /*
         * display the newest DEFAULT_LOG_ENTRIES entries
@@ -1772,21 +1944,26 @@ static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
         */
        if (num_wraps) {
                if (next_entry < size) {
-                       iwl_print_event_log(priv,
-                                       capacity - (size - next_entry),
-                                       size - next_entry, mode);
-                       iwl_print_event_log(priv, 0,
-                                   next_entry, mode);
+                       pos = iwl_print_event_log(priv,
+                                               capacity - (size - next_entry),
+                                               size - next_entry, mode,
+                                               pos, buf, bufsz);
+                       pos = iwl_print_event_log(priv, 0,
+                                                 next_entry, mode,
+                                                 pos, buf, bufsz);
                } else
-                       iwl_print_event_log(priv, next_entry - size,
-                                   size, mode);
+                       pos = iwl_print_event_log(priv, next_entry - size,
+                                                 size, mode, pos, buf, bufsz);
        } else {
-               if (next_entry < size)
-                       iwl_print_event_log(priv, 0, next_entry, mode);
-               else
-                       iwl_print_event_log(priv, next_entry - size,
-                                           size, mode);
+               if (next_entry < size) {
+                       pos = iwl_print_event_log(priv, 0, next_entry,
+                                                 mode, pos, buf, bufsz);
+               } else {
+                       pos = iwl_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 */
@@ -1794,7 +1971,8 @@ static void iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
 
 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
 
-void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
+int iwl_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 */
@@ -1802,6 +1980,8 @@ void iwl_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;
 
        if (priv->ucode_type == UCODE_INIT)
                base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
@@ -1812,7 +1992,7 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
                IWL_ERR(priv,
                        "Invalid event log pointer 0x%08X for %s uCode\n",
                        base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
-               return;
+               return -EINVAL;
        }
 
        /* event log header */
@@ -1838,7 +2018,7 @@ void iwl_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
@@ -1853,6 +2033,15 @@ void iwl_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 -ENOMEM;
+       }
        if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
                /*
                 * if uCode has wrapped back to top of log,
@@ -1860,17 +2049,22 @@ void iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log)
                 * i.e the next one that uCode would fill.
                 */
                if (num_wraps)
-                       iwl_print_event_log(priv, next_entry,
-                                           capacity - next_entry, mode);
+                       pos = iwl_print_event_log(priv, next_entry,
+                                               capacity - next_entry, mode,
+                                               pos, buf, bufsz);
                /* (then/else) start at top of log */
-               iwl_print_event_log(priv, 0, next_entry, mode);
+               pos = iwl_print_event_log(priv, 0,
+                                         next_entry, mode, pos, buf, bufsz);
        } else
-               iwl_print_last_event_logs(priv, capacity, num_wraps,
-                                       next_entry, size, mode);
+               pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
+                                               next_entry, size, mode,
+                                               pos, buf, bufsz);
 #else
-       iwl_print_last_event_logs(priv, capacity, num_wraps,
-                               next_entry, size, mode);
+       pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
+                                       next_entry, size, mode,
+                                       pos, buf, bufsz);
 #endif
+       return pos;
 }
 
 /**
@@ -2276,18 +2470,6 @@ static void iwl_bg_run_time_calib_work(struct work_struct *work)
        return;
 }
 
-static void iwl_bg_up(struct work_struct *data)
-{
-       struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
-
-       if (test_bit(STATUS_EXIT_PENDING, &priv->status))
-               return;
-
-       mutex_lock(&priv->mutex);
-       __iwl_up(priv);
-       mutex_unlock(&priv->mutex);
-}
-
 static void iwl_bg_restart(struct work_struct *data)
 {
        struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
@@ -2304,7 +2486,13 @@ static void iwl_bg_restart(struct work_struct *data)
                ieee80211_restart_hw(priv->hw);
        } else {
                iwl_down(priv);
-               queue_work(priv->workqueue, &priv->up);
+
+               if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+                       return;
+
+               mutex_lock(&priv->mutex);
+               __iwl_up(priv);
+               mutex_unlock(&priv->mutex);
        }
 }
 
@@ -2440,7 +2628,7 @@ void iwl_post_associate(struct iwl_priv *priv)
  * Not a mac80211 entry point function, but it fits in with all the
  * other mac80211 functions grouped here.
  */
-static int iwl_setup_mac(struct iwl_priv *priv)
+static int iwl_mac_setup_register(struct iwl_priv *priv)
 {
        int ret;
        struct ieee80211_hw *hw = priv->hw;
@@ -2456,12 +2644,16 @@ static int iwl_setup_mac(struct iwl_priv *priv)
                hw->flags |= IEEE80211_HW_SUPPORTS_PS |
                             IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
 
+       if (priv->cfg->sku & IWL_SKU_N)
+               hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
+                            IEEE80211_HW_SUPPORTS_STATIC_SMPS;
+
        hw->sta_data_size = sizeof(struct iwl_station_priv);
        hw->wiphy->interface_modes =
                BIT(NL80211_IFTYPE_STATION) |
                BIT(NL80211_IFTYPE_ADHOC);
 
-       hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
+       hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
                            WIPHY_FLAG_DISABLE_BEACON_HINTS;
 
        /*
@@ -2506,21 +2698,7 @@ static int iwl_mac_start(struct ieee80211_hw *hw)
 
        /* we should be verifying the device is ready to be opened */
        mutex_lock(&priv->mutex);
-
-       /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
-        * ucode filename and max sizes are card-specific. */
-
-       if (!priv->ucode_code.len) {
-               ret = iwl_read_ucode(priv);
-               if (ret) {
-                       IWL_ERR(priv, "Could not read microcode: %d\n", ret);
-                       mutex_unlock(&priv->mutex);
-                       return ret;
-               }
-       }
-
        ret = __iwl_up(priv);
-
        mutex_unlock(&priv->mutex);
 
        if (ret)
@@ -2668,14 +2846,18 @@ void iwl_config_ap(struct iwl_priv *priv)
 }
 
 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
-                       struct ieee80211_key_conf *keyconf, const u8 *addr,
-                       u32 iv32, u16 *phase1key)
+                                   struct ieee80211_vif *vif,
+                                   struct ieee80211_key_conf *keyconf,
+                                   struct ieee80211_sta *sta,
+                                   u32 iv32, u16 *phase1key)
 {
 
        struct iwl_priv *priv = hw->priv;
        IWL_DEBUG_MAC80211(priv, "enter\n");
 
-       iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
+       iwl_update_tkip_key(priv, keyconf,
+                           sta ? sta->addr : iwl_bcast_addr,
+                           iv32, phase1key);
 
        IWL_DEBUG_MAC80211(priv, "leave\n");
 }
@@ -2784,6 +2966,9 @@ static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
                        return 0;
                else
                        return ret;
+       case IEEE80211_AMPDU_TX_OPERATIONAL:
+               /* do nothing */
+               return -EOPNOTSUPP;
        default:
                IWL_DEBUG_HT(priv, "unknown\n");
                return -EINVAL;
@@ -2833,6 +3018,8 @@ static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
                break;
        case STA_NOTIFY_AWAKE:
                WARN_ON(!sta_priv->client);
+               if (!sta_priv->asleep)
+                       break;
                sta_priv->asleep = false;
                sta_id = iwl_find_station(priv, sta->addr);
                if (sta_id != IWL_INVALID_STATION)
@@ -3109,7 +3296,6 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv)
 
        init_waitqueue_head(&priv->wait_command_queue);
 
-       INIT_WORK(&priv->up, iwl_bg_up);
        INIT_WORK(&priv->restart, iwl_bg_restart);
        INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
        INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
@@ -3126,6 +3312,10 @@ static void iwl_setup_deferred_work(struct iwl_priv *priv)
        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);
@@ -3141,9 +3331,11 @@ static void iwl_cancel_deferred_work(struct iwl_priv *priv)
 
        cancel_delayed_work_sync(&priv->init_alive_start);
        cancel_delayed_work(&priv->scan_check);
+       cancel_work_sync(&priv->start_internal_scan);
        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,
@@ -3179,6 +3371,7 @@ static int iwl_init_drv(struct iwl_priv *priv)
        INIT_LIST_HEAD(&priv->free_frames);
 
        mutex_init(&priv->mutex);
+       mutex_init(&priv->sync_cmd_mutex);
 
        /* Clear the driver's (not device's) station table */
        iwl_clear_stations_table(priv);
@@ -3188,6 +3381,14 @@ static int iwl_init_drv(struct iwl_priv *priv)
        priv->band = IEEE80211_BAND_2GHZ;
 
        priv->iw_mode = NL80211_IFTYPE_STATION;
+       priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
+       priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
+
+       /* initialize force reset */
+       priv->force_reset[IWL_RF_RESET].reset_duration =
+               IWL_DELAY_NEXT_FORCE_RF_RESET;
+       priv->force_reset[IWL_FW_RESET].reset_duration =
+               IWL_DELAY_NEXT_FORCE_FW_RELOAD;
 
        /* Choose which receivers/antennas to use */
        if (priv->cfg->ops->hcmd->set_rxon_chain)
@@ -3264,7 +3465,6 @@ static struct ieee80211_ops iwl_hw_ops = {
        .set_key = iwl_mac_set_key,
        .update_tkip_key = iwl_mac_update_tkip_key,
        .get_stats = iwl_mac_get_stats,
-       .get_tx_stats = iwl_mac_get_tx_stats,
        .conf_tx = iwl_mac_conf_tx,
        .reset_tsf = iwl_mac_reset_tsf,
        .bss_info_changed = iwl_bss_info_changed,
@@ -3365,6 +3565,14 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         */
        spin_lock_init(&priv->reg_lock);
        spin_lock_init(&priv->lock);
+
+       /*
+        * stop and reset the on-board processor just in case it is in a
+        * strange state ... like being left stranded by a primary kernel
+        * and this is now the kdump kernel trying to start up
+        */
+       iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
+
        iwl_hw_detect(priv);
        IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
                priv->cfg->name, priv->hw_rev);
@@ -3439,9 +3647,9 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        iwl_setup_deferred_work(priv);
        iwl_setup_rx_handlers(priv);
 
-       /**********************************
-        * 8. Setup and register mac80211
-        **********************************/
+       /*********************************************
+        * 8. Enable interrupts and read RFKILL state
+        *********************************************/
 
        /* enable interrupts if needed: hw bug w/a */
        pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
@@ -3452,14 +3660,6 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        iwl_enable_interrupts(priv);
 
-       err = iwl_setup_mac(priv);
-       if (err)
-               goto out_remove_sysfs;
-
-       err = iwl_dbgfs_register(priv, DRV_NAME);
-       if (err)
-               IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
-
        /* If platform's RF_KILL switch is NOT set to KILL */
        if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
                clear_bit(STATUS_RF_KILL_HW, &priv->status);
@@ -3471,6 +3671,11 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        iwl_power_initialize(priv);
        iwl_tt_initialize(priv);
+
+       err = iwl_request_firmware(priv, true);
+       if (err)
+               goto out_remove_sysfs;
+
        return 0;
 
  out_remove_sysfs:
@@ -3589,7 +3794,7 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev)
  *****************************************************************************/
 
 /* Hardware specific file defines the PCI IDs table for that hardware module */
-static struct pci_device_id iwl_hw_card_ids[] = {
+static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
 #ifdef CONFIG_IWL4965
        {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
        {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},