/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2013 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
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
 * All rights reserved.
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 *****************************************************************************/

#ifndef __iwl_fw_h__
#define __iwl_fw_h__
#include <linux/types.h>
#include <net/mac80211.h>

/**
 * 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.
 * @IWL_UCODE_TLV_FLAGS_DW_BC_TABLE: The SCD byte count table is in DWORDS
 */
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),
        IWL_UCODE_TLV_FLAGS_DW_BC_TABLE = BIT(4),
};

/* The default calibrate table size if not specified by firmware file */
#define IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE     18
#define IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE         19
#define IWL_MAX_PHY_CALIBRATE_TBL_SIZE                  253

/**
 * enum iwl_ucode_type
 *
 * The type of ucode.
 *
 * @IWL_UCODE_REGULAR: Normal runtime ucode
 * @IWL_UCODE_INIT: Initial ucode
 * @IWL_UCODE_WOWLAN: Wake on Wireless enabled ucode
 */
enum iwl_ucode_type {
        IWL_UCODE_REGULAR,
        IWL_UCODE_INIT,
        IWL_UCODE_WOWLAN,
        IWL_UCODE_TYPE_MAX,
};

/*
 * enumeration of ucode section.
 * This enumeration is used directly for older firmware (before 16.0).
 * For new firmware, there can be up to 4 sections (see below) but the
 * first one packaged into the firmware file is the DATA section and
 * some debugging code accesses that.
 */
enum iwl_ucode_sec {
        IWL_UCODE_SECTION_DATA,
        IWL_UCODE_SECTION_INST,
};
/*
 * For 16.0 uCode and above, there is no differentiation between sections,
 * just an offset to the HW address.
 */
#define IWL_UCODE_SECTION_MAX 4

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

/* one for each uCode image (inst/data, init/runtime/wowlan) */
struct fw_desc {
        const void *data;       /* vmalloc'ed data */
        u32 len;                /* size in bytes */
        u32 offset;             /* offset in the device */
};

struct fw_img {
        struct fw_desc sec[IWL_UCODE_SECTION_MAX];
};

/* uCode version contains 4 values: Major/Minor/API/Serial */
#define IWL_UCODE_MAJOR(ver)    (((ver) & 0xFF000000) >> 24)
#define IWL_UCODE_MINOR(ver)    (((ver) & 0x00FF0000) >> 16)
#define IWL_UCODE_API(ver)      (((ver) & 0x0000FF00) >> 8)
#define IWL_UCODE_SERIAL(ver)   ((ver) & 0x000000FF)

/*
 * Calibration control struct.
 * Sent as part of the phy configuration command.
 * @flow_trigger: bitmap for which calibrations to perform according to
 *              flow triggers.
 * @event_trigger: bitmap for which calibrations to perform according to
 *              event triggers.
 */
struct iwl_tlv_calib_ctrl {
        __le32 flow_trigger;
        __le32 event_trigger;
} __packed;

enum iwl_fw_phy_cfg {
        FW_PHY_CFG_RADIO_TYPE_POS = 0,
        FW_PHY_CFG_RADIO_TYPE = 0x3 << FW_PHY_CFG_RADIO_TYPE_POS,
        FW_PHY_CFG_RADIO_STEP_POS = 2,
        FW_PHY_CFG_RADIO_STEP = 0x3 << FW_PHY_CFG_RADIO_STEP_POS,
        FW_PHY_CFG_RADIO_DASH_POS = 4,
        FW_PHY_CFG_RADIO_DASH = 0x3 << FW_PHY_CFG_RADIO_DASH_POS,
        FW_PHY_CFG_TX_CHAIN_POS = 16,
        FW_PHY_CFG_TX_CHAIN = 0xf << FW_PHY_CFG_TX_CHAIN_POS,
        FW_PHY_CFG_RX_CHAIN_POS = 20,
        FW_PHY_CFG_RX_CHAIN = 0xf << FW_PHY_CFG_RX_CHAIN_POS,
};

/**
 * struct iwl_fw - variables associated with the firmware
 *
 * @ucode_ver: ucode version from the ucode file
 * @fw_version: firmware version string
 * @img: ucode image like ucode_rt, ucode_init, ucode_wowlan.
 * @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.
 * @init_evtlog_size: event log size for init ucode.
 * @init_errlog_ptr: error log offfset for init ucode.
 * @inst_evtlog_ptr: event log offset for runtime ucode.
 * @inst_evtlog_size: event log size for runtime ucode.
 * @inst_errlog_ptr: error log offfset for runtime ucode.
 * @mvm_fw: indicates this is MVM firmware
 */
struct iwl_fw {
        u32 ucode_ver;

        char fw_version[ETHTOOL_FWVERS_LEN];

        /* ucode images */
        struct fw_img img[IWL_UCODE_TYPE_MAX];

        struct iwl_ucode_capabilities ucode_capa;
        bool enhance_sensitivity_table;

        u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
        u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;

        struct iwl_tlv_calib_ctrl default_calib[IWL_UCODE_TYPE_MAX];
        u32 phy_config;

        bool mvm_fw;
};

static inline u8 iwl_fw_valid_tx_ant(const struct iwl_fw *fw)
{
        return (fw->phy_config & FW_PHY_CFG_TX_CHAIN) >>
                FW_PHY_CFG_TX_CHAIN_POS;
}

static inline u8 iwl_fw_valid_rx_ant(const struct iwl_fw *fw)
{
        return (fw->phy_config & FW_PHY_CFG_RX_CHAIN) >>
                FW_PHY_CFG_RX_CHAIN_POS;
}

#endif  /* __iwl_fw_h__ */