libertas_tf: usb specific functions

The libertas thin firmware only supports usb devices, but the usb functions have
been kept separate to ease future support for other devices.
Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/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