Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[pandora-kernel.git] / drivers / net / wireless / iwlwifi / iwl-agn-ucode.c
index d807e5e..8bda0e8 100644 (file)
@@ -2,7 +2,7 @@
  *
  * GPL LICENSE SUMMARY
  *
- * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -161,47 +161,19 @@ static int iwlagn_load_section(struct iwl_priv *priv, const char *name,
 }
 
 static int iwlagn_load_given_ucode(struct iwl_priv *priv,
-               struct fw_desc *inst_image,
-               struct fw_desc *data_image)
+                                  struct fw_img *image)
 {
        int ret = 0;
 
-       ret = iwlagn_load_section(priv, "INST", inst_image,
+       ret = iwlagn_load_section(priv, "INST", &image->code,
                                   IWLAGN_RTC_INST_LOWER_BOUND);
        if (ret)
                return ret;
 
-       return iwlagn_load_section(priv, "DATA", data_image,
+       return iwlagn_load_section(priv, "DATA", &image->data,
                                    IWLAGN_RTC_DATA_LOWER_BOUND);
 }
 
-int iwlagn_load_ucode(struct iwl_priv *priv)
-{
-       int ret = 0;
-
-       /* check whether init ucode should be loaded, or rather runtime ucode */
-       if (priv->ucode_init.len && (priv->ucode_type == UCODE_NONE)) {
-               IWL_DEBUG_INFO(priv, "Init ucode found. Loading init ucode...\n");
-               ret = iwlagn_load_given_ucode(priv,
-                       &priv->ucode_init, &priv->ucode_init_data);
-               if (!ret) {
-                       IWL_DEBUG_INFO(priv, "Init ucode load complete.\n");
-                       priv->ucode_type = UCODE_INIT;
-               }
-       } else {
-               IWL_DEBUG_INFO(priv, "Init ucode not found, or already loaded. "
-                       "Loading runtime ucode...\n");
-               ret = iwlagn_load_given_ucode(priv,
-                       &priv->ucode_code, &priv->ucode_data);
-               if (!ret) {
-                       IWL_DEBUG_INFO(priv, "Runtime ucode load complete.\n");
-                       priv->ucode_type = UCODE_RT;
-               }
-       }
-
-       return ret;
-}
-
 /*
  *  Calibration
  */
@@ -297,33 +269,9 @@ void iwlagn_rx_calib_result(struct iwl_priv *priv,
        iwl_calib_set(&priv->calib_results[index], pkt->u.raw, len);
 }
 
-void iwlagn_rx_calib_complete(struct iwl_priv *priv,
-                              struct iwl_rx_mem_buffer *rxb)
+int iwlagn_init_alive_start(struct iwl_priv *priv)
 {
-       IWL_DEBUG_INFO(priv, "Init. calibration is completed, restarting fw.\n");
-       queue_work(priv->workqueue, &priv->restart);
-}
-
-void iwlagn_init_alive_start(struct iwl_priv *priv)
-{
-       int ret = 0;
-
-       /* initialize uCode was loaded... verify inst image.
-        * This is a paranoid check, because we would not have gotten the
-        * "initialize" alive if code weren't properly loaded.  */
-       if (iwl_verify_ucode(priv)) {
-               /* Runtime instruction load was bad;
-                * take it all the way back down so we can try again */
-               IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
-               goto restart;
-       }
-
-       ret = priv->cfg->ops->lib->alive_notify(priv);
-       if (ret) {
-               IWL_WARN(priv,
-                       "Could not complete ALIVE transition: %d\n", ret);
-               goto restart;
-       }
+       int ret;
 
        if (priv->cfg->bt_params &&
            priv->cfg->bt_params->advanced_bt_coexist) {
@@ -333,24 +281,25 @@ void iwlagn_init_alive_start(struct iwl_priv *priv)
                 * no need to close the envlope since we are going
                 * to load the runtime uCode later.
                 */
-               iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
+               ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
                        BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
+               if (ret)
+                       return ret;
 
        }
-       iwlagn_send_calib_cfg(priv);
+
+       ret = iwlagn_send_calib_cfg(priv);
+       if (ret)
+               return ret;
 
        /**
         * temperature offset calibration is only needed for runtime ucode,
         * so prepare the value now.
         */
        if (priv->cfg->need_temp_offset_calib)
-               iwlagn_set_temperature_offset_calib(priv);
+               return iwlagn_set_temperature_offset_calib(priv);
 
-       return;
-
-restart:
-       /* real restart (first load init_ucode) */
-       queue_work(priv->workqueue, &priv->restart);
+       return 0;
 }
 
 static int iwlagn_send_wimax_coex(struct iwl_priv *priv)
@@ -413,25 +362,30 @@ void iwlagn_send_prio_tbl(struct iwl_priv *priv)
                IWL_ERR(priv, "failed to send BT prio tbl command\n");
 }
 
-void iwlagn_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
+int iwlagn_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 {
        struct iwl_bt_coex_prot_env_cmd env_cmd;
+       int ret;
 
        env_cmd.action = action;
        env_cmd.type = type;
-       if (iwl_send_cmd_pdu(priv, REPLY_BT_COEX_PROT_ENV,
-                            sizeof(env_cmd), &env_cmd))
+       ret = iwl_send_cmd_pdu(priv, REPLY_BT_COEX_PROT_ENV,
+                              sizeof(env_cmd), &env_cmd);
+       if (ret)
                IWL_ERR(priv, "failed to send BT env command\n");
+       return ret;
 }
 
 
-int iwlagn_alive_notify(struct iwl_priv *priv)
+static int iwlagn_alive_notify(struct iwl_priv *priv)
 {
        const struct queue_to_fifo_ac *queue_to_fifo;
+       struct iwl_rxon_context *ctx;
        u32 a;
        unsigned long flags;
        int i, chan;
        u32 reg_val;
+       int ret;
 
        spin_lock_irqsave(&priv->lock, flags);
 
@@ -500,6 +454,8 @@ int iwlagn_alive_notify(struct iwl_priv *priv)
        memset(&priv->queue_stopped[0], 0, sizeof(priv->queue_stopped));
        for (i = 0; i < 4; i++)
                atomic_set(&priv->queue_stop_count[i], 0);
+       for_each_context(priv, ctx)
+               ctx->last_tx_rejected = false;
 
        /* reset to 0 to enable all the queue first */
        priv->txq_ctx_active_msk = 0;
@@ -527,12 +483,15 @@ int iwlagn_alive_notify(struct iwl_priv *priv)
        iwl_clear_bits_prph(priv, APMG_PCIDEV_STT_REG,
                          APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
 
-       iwlagn_send_wimax_coex(priv);
+       ret = iwlagn_send_wimax_coex(priv);
+       if (ret)
+               return ret;
 
-       iwlagn_set_Xtal_calib(priv);
-       iwl_send_calib_results(priv);
+       ret = iwlagn_set_Xtal_calib(priv);
+       if (ret)
+               return ret;
 
-       return 0;
+       return iwl_send_calib_results(priv);
 }
 
 
@@ -541,11 +500,12 @@ int iwlagn_alive_notify(struct iwl_priv *priv)
  *   using sample data 100 bytes apart.  If these sample points are good,
  *   it's a pretty good bet that everything between them is good, too.
  */
-static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
+static int iwlcore_verify_inst_sparse(struct iwl_priv *priv,
+                                     struct fw_desc *fw_desc)
 {
+       __le32 *image = (__le32 *)fw_desc->v_addr;
+       u32 len = fw_desc->len;
        u32 val;
-       int ret = 0;
-       u32 errcnt = 0;
        u32 i;
 
        IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
@@ -556,104 +516,204 @@ static int iwlcore_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32
                 * if IWL_DL_IO is set */
                iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
                        i + IWLAGN_RTC_INST_LOWER_BOUND);
-               val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
-               if (val != le32_to_cpu(*image)) {
-                       ret = -EIO;
-                       errcnt++;
-                       if (errcnt >= 3)
-                               break;
-               }
+               val = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
+               if (val != le32_to_cpu(*image))
+                       return -EIO;
        }
 
-       return ret;
+       return 0;
 }
 
-/**
- * iwlcore_verify_inst_full - verify runtime uCode image in card vs. host,
- *     looking at all data.
- */
-static int iwl_verify_inst_full(struct iwl_priv *priv, __le32 *image,
-                                u32 len)
+static void iwl_print_mismatch_inst(struct iwl_priv *priv,
+                                   struct fw_desc *fw_desc)
 {
+       __le32 *image = (__le32 *)fw_desc->v_addr;
+       u32 len = fw_desc->len;
        u32 val;
-       u32 save_len = len;
-       int ret = 0;
-       u32 errcnt;
+       u32 offs;
+       int errors = 0;
 
        IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
 
        iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
                           IWLAGN_RTC_INST_LOWER_BOUND);
 
-       errcnt = 0;
-       for (; len > 0; len -= sizeof(u32), image++) {
+       for (offs = 0;
+            offs < len && errors < 20;
+            offs += sizeof(u32), image++) {
                /* read data comes through single port, auto-incr addr */
-               /* NOTE: Use the debugless read so we don't flood kernel log
-                * if IWL_DL_IO is set */
-               val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
+               val = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
                if (val != le32_to_cpu(*image)) {
-                       IWL_ERR(priv, "uCode INST section is invalid at "
-                                 "offset 0x%x, is 0x%x, s/b 0x%x\n",
-                                 save_len - len, val, le32_to_cpu(*image));
-                       ret = -EIO;
-                       errcnt++;
-                       if (errcnt >= 20)
-                               break;
+                       IWL_ERR(priv, "uCode INST section at "
+                               "offset 0x%x, is 0x%x, s/b 0x%x\n",
+                               offs, val, le32_to_cpu(*image));
+                       errors++;
                }
        }
-
-       if (!errcnt)
-               IWL_DEBUG_INFO(priv,
-                   "ucode image in INSTRUCTION memory is good\n");
-
-       return ret;
 }
 
 /**
  * iwl_verify_ucode - determine which instruction image is in SRAM,
  *    and verify its contents
  */
-int iwl_verify_ucode(struct iwl_priv *priv)
+static int iwl_verify_ucode(struct iwl_priv *priv, struct fw_img *img)
+{
+       if (!iwlcore_verify_inst_sparse(priv, &img->code)) {
+               IWL_DEBUG_INFO(priv, "uCode is good in inst SRAM\n");
+               return 0;
+       }
+
+       IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
+
+       iwl_print_mismatch_inst(priv, &img->code);
+       return -EIO;
+}
+
+struct iwlagn_alive_data {
+       bool valid;
+       u8 subtype;
+};
+
+static void iwlagn_alive_fn(struct iwl_priv *priv,
+                           struct iwl_rx_packet *pkt,
+                           void *data)
 {
-       __le32 *image;
-       u32 len;
+       struct iwlagn_alive_data *alive_data = data;
+       struct iwl_alive_resp *palive;
+
+       palive = &pkt->u.alive_frame;
+
+       IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
+                      "0x%01X 0x%01X\n",
+                      palive->is_valid, palive->ver_type,
+                      palive->ver_subtype);
+
+       priv->device_pointers.error_event_table =
+               le32_to_cpu(palive->error_event_table_ptr);
+       priv->device_pointers.log_event_table =
+               le32_to_cpu(palive->log_event_table_ptr);
+
+       alive_data->subtype = palive->ver_subtype;
+       alive_data->valid = palive->is_valid == UCODE_VALID_OK;
+}
+
+#define UCODE_ALIVE_TIMEOUT    HZ
+#define UCODE_CALIB_TIMEOUT    (2*HZ)
+
+int iwlagn_load_ucode_wait_alive(struct iwl_priv *priv,
+                                struct fw_img *image,
+                                int subtype, int alternate_subtype)
+{
+       struct iwl_notification_wait alive_wait;
+       struct iwlagn_alive_data alive_data;
        int ret;
+       enum iwlagn_ucode_subtype old_type;
 
-       /* Try bootstrap */
-       image = (__le32 *)priv->ucode_boot.v_addr;
-       len = priv->ucode_boot.len;
-       ret = iwlcore_verify_inst_sparse(priv, image, len);
-       if (!ret) {
-               IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
-               return 0;
+       ret = iwlagn_start_device(priv);
+       if (ret)
+               return ret;
+
+       iwlagn_init_notification_wait(priv, &alive_wait, REPLY_ALIVE,
+                                     iwlagn_alive_fn, &alive_data);
+
+       old_type = priv->ucode_type;
+       priv->ucode_type = subtype;
+
+       ret = iwlagn_load_given_ucode(priv, image);
+       if (ret) {
+               priv->ucode_type = old_type;
+               iwlagn_remove_notification(priv, &alive_wait);
+               return ret;
        }
 
-       /* Try initialize */
-       image = (__le32 *)priv->ucode_init.v_addr;
-       len = priv->ucode_init.len;
-       ret = iwlcore_verify_inst_sparse(priv, image, len);
-       if (!ret) {
-               IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
-               return 0;
+       /* Remove all resets to allow NIC to operate */
+       iwl_write32(priv, CSR_RESET, 0);
+
+       /*
+        * Some things may run in the background now, but we
+        * just wait for the ALIVE notification here.
+        */
+       ret = iwlagn_wait_notification(priv, &alive_wait, UCODE_ALIVE_TIMEOUT);
+       if (ret) {
+               priv->ucode_type = old_type;
+               return ret;
        }
 
-       /* Try runtime/protocol */
-       image = (__le32 *)priv->ucode_code.v_addr;
-       len = priv->ucode_code.len;
-       ret = iwlcore_verify_inst_sparse(priv, image, len);
-       if (!ret) {
-               IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
-               return 0;
+       if (!alive_data.valid) {
+               IWL_ERR(priv, "Loaded ucode is not valid!\n");
+               priv->ucode_type = old_type;
+               return -EIO;
+       }
+
+       if (alive_data.subtype != subtype &&
+           alive_data.subtype != alternate_subtype) {
+               IWL_ERR(priv,
+                       "Loaded ucode is not expected type (got %d, expected %d)!\n",
+                       alive_data.subtype, subtype);
+               priv->ucode_type = old_type;
+               return -EIO;
        }
 
-       IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
+       ret = iwl_verify_ucode(priv, image);
+       if (ret) {
+               priv->ucode_type = old_type;
+               return ret;
+       }
+
+       /* delay a bit to give rfkill time to run */
+       msleep(5);
+
+       ret = iwlagn_alive_notify(priv);
+       if (ret) {
+               IWL_WARN(priv,
+                       "Could not complete ALIVE transition: %d\n", ret);
+               priv->ucode_type = old_type;
+               return ret;
+       }
+
+       return 0;
+}
+
+int iwlagn_run_init_ucode(struct iwl_priv *priv)
+{
+       struct iwl_notification_wait calib_wait;
+       int ret;
+
+       lockdep_assert_held(&priv->mutex);
+
+       /* No init ucode required? Curious, but maybe ok */
+       if (!priv->ucode_init.code.len)
+               return 0;
+
+       if (priv->ucode_type != UCODE_SUBTYPE_NONE_LOADED)
+               return 0;
+
+       iwlagn_init_notification_wait(priv, &calib_wait,
+                                     CALIBRATION_COMPLETE_NOTIFICATION,
+                                     NULL, NULL);
+
+       /* Will also start the device */
+       ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_init,
+                                          UCODE_SUBTYPE_INIT, -1);
+       if (ret)
+               goto error;
+
+       ret = iwlagn_init_alive_start(priv);
+       if (ret)
+               goto error;
+
+       /*
+        * Some things may run in the background now, but we
+        * just wait for the calibration complete notification.
+        */
+       ret = iwlagn_wait_notification(priv, &calib_wait, UCODE_CALIB_TIMEOUT);
 
-       /* Since nothing seems to match, show first several data entries in
-        * instruction SRAM, so maybe visual inspection will give a clue.
-        * Selection of bootstrap image (vs. other images) is arbitrary. */
-       image = (__le32 *)priv->ucode_boot.v_addr;
-       len = priv->ucode_boot.len;
-       ret = iwl_verify_inst_full(priv, image, len);
+       goto out;
 
+ error:
+       iwlagn_remove_notification(priv, &calib_wait);
+ out:
+       /* Whatever happened, stop the device */
+       iwlagn_stop_device(priv);
        return ret;
 }