cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/marvell/libertas_tf/if_usb.h

/*
 *  Copyright (C) 2008, cozybit Inc.
 *  Copyright (C) 2003-2006, Marvell International Ltd.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or (at
 *  your option) any later version.
 */
#include <linux/wait.h>
#include <linux/timer.h>

struct lbtf_private;

/**
  * This file contains definition for USB interface.
  */

#define CMD_TYPE_REQUEST		0xF00DFACE

#define CMD_TYPE_DATA			0xBEADC0DE

#define CMD_TYPE_INDICATION		0xBEEFFACE


#define BOOT_CMD_FW_BY_USB		0x01

#define BOOT_CMD_FW_IN_EEPROM		0x02

#define BOOT_CMD_UPDATE_BOOT2		0x03

#define BOOT_CMD_UPDATE_FW		0x04

#define BOOT_CMD_MAGIC_NUMBER		0x4C56524D   
/* LVRM */


struct bootcmd {
	
__le32	magic;
	
uint8_t	cmd;
	
uint8_t	pad[11];
};


#define BOOT_CMD_RESP_OK		0x0001

#define BOOT_CMD_RESP_FAIL		0x0000


struct bootcmdresp {
	
__le32	magic;
	
uint8_t	cmd;
	
uint8_t	result;
	
uint8_t	pad[2];
};

/** USB card description structure*/

struct if_usb_card {
	
struct usb_device *udev;
	


struct urb *rx_urb, *tx_urb, *cmd_urb;
	
struct lbtf_private *priv;

	
struct sk_buff *rx_skb;

	
uint8_t ep_in;
	
uint8_t ep_out;

	
int8_t bootcmdresp;

	
int ep_in_size;

	
void *ep_out_buf;
	
int ep_out_size;

	
const struct firmware *fw;
	
struct timer_list fw_timeout;
	
wait_queue_head_t fw_wq;
	
uint32_t fwseqnum;
	
uint32_t totalbytes;
	
uint32_t fwlastblksent;
	
uint8_t CRC_OK;
	
uint8_t fwdnldover;
	
uint8_t fwfinalblk;

	
__le16 boot2_version;
};

/** fwheader */

struct fwheader {
	
__le32 dnldcmd;
	
__le32 baseaddr;
	
__le32 datalength;
	
__le32 CRC;
};


#define FW_MAX_DATA_BLK_SIZE	600
/** FWData */

struct fwdata {
	
struct fwheader hdr;
	
__le32 seqnum;
	
uint8_t data[0];
};

/** fwsyncheader */

struct fwsyncheader {
	
__le32 cmd;
	
__le32 seqnum;
};


#define FW_HAS_DATA_TO_RECV		0x00000001

#define FW_HAS_LAST_BLOCK		0x00000004

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