/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
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 * GPL LICENSE SUMMARY
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 * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
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 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
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#ifndef __iwl_ucode_h__
#define __iwl_ucode_h__

#include "iwl-trans.h"

#include <linux/netdevice.h>

/* v1/v2 uCode file layout */
struct iwl_ucode_header {
	__le32 ver;	/* major/minor/API/serial */
	union {
		struct {
			__le32 inst_size;	/* bytes of runtime code */
			__le32 data_size;	/* bytes of runtime data */
			__le32 init_size;	/* bytes of init code */
			__le32 init_data_size;	/* bytes of init data */
			__le32 boot_size;	/* bytes of bootstrap code */
			u8 data[0];		/* in same order as sizes */
		} v1;
		struct {
			__le32 build;		/* build number */
			__le32 inst_size;	/* bytes of runtime code */
			__le32 data_size;	/* bytes of runtime data */
			__le32 init_size;	/* bytes of init code */
			__le32 init_data_size;	/* bytes of init data */
			__le32 boot_size;	/* bytes of bootstrap code */
			u8 data[0];		/* in same order as sizes */
		} v2;
	} u;
};

/*
 * new TLV uCode file layout
 *
 * The new TLV file format contains TLVs, that each specify
 * some piece of data. To facilitate "groups", for example
 * different instruction image with different capabilities,
 * bundled with the same init image, an alternative mechanism
 * is provided:
 * When the alternative field is 0, that means that the item
 * is always valid. When it is non-zero, then it is only
 * valid in conjunction with items of the same alternative,
 * in which case the driver (user) selects one alternative
 * to use.
 */

enum iwl_ucode_tlv_type {
	IWL_UCODE_TLV_INVALID		= 0, /* unused */
	IWL_UCODE_TLV_INST		= 1,
	IWL_UCODE_TLV_DATA		= 2,
	IWL_UCODE_TLV_INIT		= 3,
	IWL_UCODE_TLV_INIT_DATA		= 4,
	IWL_UCODE_TLV_BOOT		= 5,
	IWL_UCODE_TLV_PROBE_MAX_LEN	= 6, /* a u32 value */
	IWL_UCODE_TLV_PAN		= 7,
	IWL_UCODE_TLV_RUNT_EVTLOG_PTR	= 8,
	IWL_UCODE_TLV_RUNT_EVTLOG_SIZE	= 9,
	IWL_UCODE_TLV_RUNT_ERRLOG_PTR	= 10,
	IWL_UCODE_TLV_INIT_EVTLOG_PTR	= 11,
	IWL_UCODE_TLV_INIT_EVTLOG_SIZE	= 12,
	IWL_UCODE_TLV_INIT_ERRLOG_PTR	= 13,
	IWL_UCODE_TLV_ENHANCE_SENS_TBL	= 14,
	IWL_UCODE_TLV_PHY_CALIBRATION_SIZE = 15,
	IWL_UCODE_TLV_WOWLAN_INST	= 16,
	IWL_UCODE_TLV_WOWLAN_DATA	= 17,
	IWL_UCODE_TLV_FLAGS		= 18,
};

/**
 * enum iwl_ucode_tlv_flag - ucode API flags
 * @IWL_UCODE_TLV_FLAGS_PAN: This is PAN capable microcode; this previously
 *	was a separate TLV but moved here to save space.
 * @IWL_UCODE_TLV_FLAGS_NEWSCAN: new uCode scan behaviour on hidden SSID,
 *	treats good CRC threshold as a boolean
 * @IWL_UCODE_TLV_FLAGS_MFP: This uCode image supports MFP (802.11w).
 * @IWL_UCODE_TLV_FLAGS_P2P: This uCode image supports P2P.
 */
enum iwl_ucode_tlv_flag {
	IWL_UCODE_TLV_FLAGS_PAN		= BIT(0),
	IWL_UCODE_TLV_FLAGS_NEWSCAN	= BIT(1),
	IWL_UCODE_TLV_FLAGS_MFP		= BIT(2),
	IWL_UCODE_TLV_FLAGS_P2P		= BIT(3),
};

struct iwl_ucode_tlv {
	__le16 type;		/* see above */
	__le16 alternative;	/* see comment */
	__le32 length;		/* not including type/length fields */
	u8 data[0];
};

#define IWL_TLV_UCODE_MAGIC	0x0a4c5749

struct iwl_tlv_ucode_header {
	/*
	 * The TLV style ucode header is distinguished from
	 * the v1/v2 style header by first four bytes being
	 * zero, as such is an invalid combination of
	 * major/minor/API/serial versions.
	 */
	__le32 zero;
	__le32 magic;
	u8 human_readable[64];
	__le32 ver;		/* major/minor/API/serial */
	__le32 build;
	__le64 alternatives;	/* bitmask of valid alternatives */
	/*
	 * The data contained herein has a TLV layout,
	 * see above for the TLV header and types.
	 * Note that each TLV is padded to a length
	 * that is a multiple of 4 for alignment.
	 */
	u8 data[0];
};

struct iwl_ucode_capabilities {
	u32 max_probe_length;
	u32 standard_phy_calibration_size;
	u32 flags;
};

/**
 * struct iwl_fw - variables associated with the firmware
 *
 * @ucode_ver: ucode version from the ucode file
 * @fw_version: firmware version string
 * @ucode_rt: run time ucode image
 * @ucode_init: init ucode image
 * @ucode_wowlan: wake on wireless ucode image (optional)
 * @ucode_capa: capabilities parsed from the ucode file.
 * @enhance_sensitivity_table: device can do enhanced sensitivity.
 */
struct iwl_fw {

	/* ucode image and variables */
	u32 ucode_ver;                  /* version of ucode, copy of
					   iwl_ucode.ver */
	char fw_version[ETHTOOL_BUSINFO_LEN];

	/* ucode images */
	struct fw_img ucode_rt;
	struct fw_img ucode_init;
	struct fw_img ucode_wowlan;

	struct iwl_ucode_capabilities ucode_capa;
	bool enhance_sensitivity_table;
};

struct iwl_priv;

int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first);

#endif  /* __iwl_ucode_h__ */