iwlwifi: introduce Image Loader (IML) - new firmware image

In future devices a new image will be introduced - IML. The IML, image
loader, is loaded by the ROM, and as part of the new self-init flow,
loads the rest of the firmware images to the device.

Store the image, so the ROM can load it to the device.

Signed-off-by: Golan Ben Ami <golan.ben.ami@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/file.h

@@ -8,6 +8,7 @@
  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  *
  * 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
@@ -35,6 +36,7 @@
  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -143,6 +145,7 @@ enum iwl_ucode_tlv_type {
 	IWL_UCODE_TLV_FW_DBG_TRIGGER	= 40,
 	IWL_UCODE_TLV_FW_GSCAN_CAPA	= 50,
 	IWL_UCODE_TLV_FW_MEM_SEG	= 51,
+	IWL_UCODE_TLV_IML		= 52,
 };
 
 struct iwl_ucode_tlv {

drivers/net/wireless/intel/iwlwifi/fw/img.h

@@ -8,6 +8,7 @@
  * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016        Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  *
  * 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
@@ -35,6 +36,7 @@
  * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016        Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -241,6 +243,8 @@ enum iwl_fw_type {
  * @ucode_ver: ucode version from the ucode file
  * @fw_version: firmware version string
  * @img: ucode image like ucode_rt, ucode_init, ucode_wowlan.
+ * @iml_len: length of the image loader image
+ * @iml: image loader fw image
  * @ucode_capa: capabilities parsed from the ucode file.
  * @enhance_sensitivity_table: device can do enhanced sensitivity.
  * @init_evtlog_ptr: event log offset for init ucode.
@@ -267,6 +271,8 @@ struct iwl_fw {
 
 	/* ucode images */
 	struct fw_img img[IWL_UCODE_TYPE_MAX];
+	size_t iml_len;
+	u8 *iml;
 
 	struct iwl_ucode_capabilities ucode_capa;
 	bool enhance_sensitivity_table;

drivers/net/wireless/intel/iwlwifi/iwl-drv.c

@@ -179,6 +179,7 @@ static void iwl_dealloc_ucode(struct iwl_drv *drv)
 	for (i = 0; i < ARRAY_SIZE(drv->fw.dbg_trigger_tlv); i++)
 		kfree(drv->fw.dbg_trigger_tlv[i]);
 	kfree(drv->fw.dbg_mem_tlv);
+	kfree(drv->fw.iml);
 
 	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
 		iwl_free_fw_img(drv, drv->fw.img + i);
@@ -1126,6 +1127,13 @@ static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
 			pieces->n_dbg_mem_tlv++;
 			break;
 			}
+		case IWL_UCODE_TLV_IML: {
+			drv->fw.iml_len = tlv_len;
+			drv->fw.iml = kmemdup(tlv_data, tlv_len, GFP_KERNEL);
+			if (!drv->fw.iml)
+				return -ENOMEM;
+			break;
+			}
 		default:
 			IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
 			break;

drivers/net/wireless/intel/iwlwifi/iwl-trans.h

@@ -691,6 +691,8 @@ enum iwl_plat_pm_mode {
  * @wide_cmd_header: true when ucode supports wide command header format
  * @num_rx_queues: number of RX queues allocated by the transport;
  *	the transport must set this before calling iwl_drv_start()
+ * @iml_len: the length of the image loader
+ * @iml: a pointer to the image loader itself
  * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
  *	The user should use iwl_trans_{alloc,free}_tx_cmd.
  * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
@@ -735,6 +737,9 @@ struct iwl_trans {
 
 	u8 num_rx_queues;
 
+	size_t iml_len;
+	u8 *iml;
+
 	/* The following fields are internal only */
 	struct kmem_cache *dev_cmd_pool;
 	char dev_cmd_pool_name[50];

drivers/net/wireless/intel/iwlwifi/mvm/ops.c

@@ -739,6 +739,9 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 	       sizeof(trans->dbg_conf_tlv));
 	trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
 
+	trans->iml = mvm->fw->iml;
+	trans->iml_len = mvm->fw->iml_len;
+
 	/* set up notification wait support */
 	iwl_notification_wait_init(&mvm->notif_wait);