/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
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 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2014 Intel Mobile Communications GmbH
 *
 * 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
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 * General Public License for more details.
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 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
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 * 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) 2014 Intel Corporation. All rights reserved.
 * Copyright(c) 2014 Intel Mobile Communications GmbH
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 *****************************************************************************/

#ifndef __fw_error_dump_h__
#define __fw_error_dump_h__

#include <linux/types.h>

#define IWL_FW_ERROR_DUMP_BARKER	0x14789632

/**
 * enum iwl_fw_error_dump_type - types of data in the dump file
 * @IWL_FW_ERROR_DUMP_CSR: Control Status Registers - from offset 0
 * @IWL_FW_ERROR_DUMP_RXF:
 * @IWL_FW_ERROR_DUMP_TXCMD: last TX command data, structured as
 *	&struct iwl_fw_error_dump_txcmd packets
 * @IWL_FW_ERROR_DUMP_DEV_FW_INFO:  struct %iwl_fw_error_dump_info
 *	info on the device / firmware.
 * @IWL_FW_ERROR_DUMP_FW_MONITOR: firmware monitor
 * @IWL_FW_ERROR_DUMP_PRPH: range of periphery registers - there can be several
 *	sections like this in a single file.
 * @IWL_FW_ERROR_DUMP_FH_REGS: range of FH registers
 * @IWL_FW_ERROR_DUMP_MEM: chunk of memory
 * @IWL_FW_ERROR_DUMP_ERROR_INFO: description of what triggered this dump.
 *	Structured as &struct iwl_fw_error_dump_trigger_desc.
 */
enum iwl_fw_error_dump_type {
	/* 0 is deprecated */
	IWL_FW_ERROR_DUMP_CSR = 1,
	IWL_FW_ERROR_DUMP_RXF = 2,
	IWL_FW_ERROR_DUMP_TXCMD = 3,
	IWL_FW_ERROR_DUMP_DEV_FW_INFO = 4,
	IWL_FW_ERROR_DUMP_FW_MONITOR = 5,
	IWL_FW_ERROR_DUMP_PRPH = 6,
	IWL_FW_ERROR_DUMP_TXF = 7,
	IWL_FW_ERROR_DUMP_FH_REGS = 8,
	IWL_FW_ERROR_DUMP_MEM = 9,
	IWL_FW_ERROR_DUMP_ERROR_INFO = 10,

	IWL_FW_ERROR_DUMP_MAX,
};

/**
 * struct iwl_fw_error_dump_data - data for one type
 * @type: %enum iwl_fw_error_dump_type
 * @len: the length starting from %data
 * @data: the data itself
 */
struct iwl_fw_error_dump_data {
	__le32 type;
	__le32 len;
	__u8 data[];
} __packed;

/**
 * struct iwl_fw_error_dump_file - the layout of the header of the file
 * @barker: must be %IWL_FW_ERROR_DUMP_BARKER
 * @file_len: the length of all the file starting from %barker
 * @data: array of %struct iwl_fw_error_dump_data
 */
struct iwl_fw_error_dump_file {
	__le32 barker;
	__le32 file_len;
	u8 data[0];
} __packed;

/**
 * struct iwl_fw_error_dump_txcmd - TX command data
 * @cmdlen: original length of command
 * @caplen: captured length of command (may be less)
 * @data: captured command data, @caplen bytes
 */
struct iwl_fw_error_dump_txcmd {
	__le32 cmdlen;
	__le32 caplen;
	u8 data[];
} __packed;

/**
 * struct iwl_fw_error_dump_fifo - RX/TX FIFO data
 * @fifo_num: number of FIFO (starting from 0)
 * @available_bytes: num of bytes available in FIFO (may be less than FIFO size)
 * @wr_ptr: position of write pointer
 * @rd_ptr: position of read pointer
 * @fence_ptr: position of fence pointer
 * @fence_mode: the current mode of the fence (before locking) -
 *	0=follow RD pointer ; 1 = freeze
 * @data: all of the FIFO's data
 */
struct iwl_fw_error_dump_fifo {
	__le32 fifo_num;
	__le32 available_bytes;
	__le32 wr_ptr;
	__le32 rd_ptr;
	__le32 fence_ptr;
	__le32 fence_mode;
	u8 data[];
} __packed;

enum iwl_fw_error_dump_family {
	IWL_FW_ERROR_DUMP_FAMILY_7 = 7,
	IWL_FW_ERROR_DUMP_FAMILY_8 = 8,
};

/**
 * struct iwl_fw_error_dump_info - info on the device / firmware
 * @device_family: the family of the device (7 / 8)
 * @hw_step: the step of the device
 * @fw_human_readable: human readable FW version
 * @dev_human_readable: name of the device
 * @bus_human_readable: name of the bus used
 */
struct iwl_fw_error_dump_info {
	__le32 device_family;
	__le32 hw_step;
	u8 fw_human_readable[FW_VER_HUMAN_READABLE_SZ];
	u8 dev_human_readable[64];
	u8 bus_human_readable[8];
} __packed;

/**
 * struct iwl_fw_error_dump_fw_mon - FW monitor data
 * @fw_mon_wr_ptr: the position of the write pointer in the cyclic buffer
 * @fw_mon_base_ptr: base pointer of the data
 * @fw_mon_cycle_cnt: number of wrap arounds
 * @reserved: for future use
 * @data: captured data
 */
struct iwl_fw_error_dump_fw_mon {
	__le32 fw_mon_wr_ptr;
	__le32 fw_mon_base_ptr;
	__le32 fw_mon_cycle_cnt;
	__le32 reserved[3];
	u8 data[];
} __packed;

/**
 * struct iwl_fw_error_dump_prph - periphery registers data
 * @prph_start: address of the first register in this chunk
 * @data: the content of the registers
 */
struct iwl_fw_error_dump_prph {
	__le32 prph_start;
	__le32 data[];
};

enum iwl_fw_error_dump_mem_type {
	IWL_FW_ERROR_DUMP_MEM_SRAM,
	IWL_FW_ERROR_DUMP_MEM_SMEM,
};

/**
 * struct iwl_fw_error_dump_mem - chunk of memory
 * @type: %enum iwl_fw_error_dump_mem_type
 * @offset: the offset from which the memory was read
 * @data: the content of the memory
 */
struct iwl_fw_error_dump_mem {
	__le32 type;
	__le32 offset;
	u8 data[];
};

/**
 * iwl_fw_error_next_data - advance fw error dump data pointer
 * @data: previous data block
 * Returns: next data block
 */
static inline struct iwl_fw_error_dump_data *
iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data)
{
	return (void *)(data->data + le32_to_cpu(data->len));
}

/**
 * enum iwl_fw_dbg_trigger - triggers available
 *
 * @FW_DBG_TRIGGER_USER: trigger log collection by user
 *	This should not be defined as a trigger to the driver, but a value the
 *	driver should set to indicate that the trigger was initiated by the
 *	user.
 * @FW_DBG_TRIGGER_FW_ASSERT: trigger log collection when the firmware asserts
 */
enum iwl_fw_dbg_trigger {
	FW_DBG_TRIGGER_INVALID = 0,
	FW_DBG_TRIGGER_USER,
	FW_DBG_TRIGGER_FW_ASSERT,

	/* must be last */
	FW_DBG_TRIGGER_MAX,
};

/**
 * struct iwl_fw_error_dump_trigger_desc - describes the trigger condition
 * @type: %enum iwl_fw_dbg_trigger
 * @data: raw data about what happened
 */
struct iwl_fw_error_dump_trigger_desc {
	__le32 type;
	u8 data[];
};

#endif /* __fw_error_dump_h__ */