/* * *  BlueZ - Bluetooth protocol stack for Linux * *  Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org> * * *  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. * *  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 St, Fifth Floor, Boston, MA  02110-1301  USA * */#ifdef HAVE_CONFIG_H#include <config.h>#endif#include <stdio.h>#include <errno.h>#include <string.h>#include <usb.h>#include "csr.h"#ifdef NEED_USB_GET_BUSSESstatic inline struct usb_bus *usb_get_busses(void){	return usb_busses;}#endif#ifdef NEED_USB_INTERRUPT_READstatic inline int usb_interrupt_read(usb_dev_handle *dev, int ep, char *bytes, int size, int timeout){	return usb_bulk_read(dev, ep, bytes, size, timeout);}#endif#ifndef USB_DIR_OUT#define USB_DIR_OUT	0x00#endifstatic uint16_t seqnum = 0x0000;static struct usb_dev_handle *udev = NULL;int csr_open_usb(char *device){	struct usb_bus *bus;	struct usb_device *dev;	usb_init();	usb_find_busses();	usb_find_devices();	for (bus = usb_get_busses(); bus; bus = bus->next) {		for (dev = bus->devices; dev; dev = dev->next) {			if (dev->descriptor.bDeviceClass == USB_CLASS_HUB)				continue;			if (dev->descriptor.idVendor != 0x0a12 ||					dev->descriptor.idProduct != 0x0001)				continue;			goto found;		}	}	fprintf(stderr, "Device not available\n");	return -1;found:	udev = usb_open(dev);	if (!udev) {		fprintf(stderr, "Can't open device: %s (%d)\n",						strerror(errno), errno);		return -1;	}	if (usb_claim_interface(udev, 0) < 0) {		fprintf(stderr, "Can't claim interface: %s (%d)\n",						strerror(errno), errno);		usb_close(udev);		return -1;	}	return 0;}static int do_command(uint16_t command, uint16_t seqnum, uint16_t varid, uint8_t *value, uint16_t length){	unsigned char cp[254], rp[254];	uint8_t cmd[10];	uint16_t size;	int len, offset = 0;	size = (length < 8) ? 9 : ((length + 1) / 2) + 5;	cmd[0] = command & 0xff;	cmd[1] = command >> 8;	cmd[2] = size & 0xff;	cmd[3] = size >> 8;	cmd[4] = seqnum & 0xff;	cmd[5] = seqnum >> 8;	cmd[6] = varid & 0xff;	cmd[7] = varid >> 8;	cmd[8] = 0x00;	cmd[9] = 0x00;	memset(cp, 0, sizeof(cp));	cp[0] = 0x00;	cp[1] = 0xfc;	cp[2] = (size * 2) + 1;	cp[3] = 0xc2;	memcpy(cp + 4, cmd, sizeof(cmd));	memcpy(cp + 14, value, length);	usb_interrupt_read(udev, 0x81, (void *) rp, sizeof(rp), 2);	if (usb_control_msg(udev, USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_DEVICE,				0, 0, 0, (void *) cp, (size * 2) + 4, 1000) < 0)		return -1;	switch (varid) {	case CSR_VARID_COLD_RESET:	case CSR_VARID_WARM_RESET:	case CSR_VARID_COLD_HALT:	case CSR_VARID_WARM_HALT:		return 0;	}	do {		len = usb_interrupt_read(udev, 0x81,			(void *) (rp + offset), sizeof(rp) - offset, 10);		offset += len;	} while (len > 0);	if (rp[0] != 0xff || rp[2] != 0xc2) {		errno = EIO;		return -1;	}	if ((rp[11] + (rp[12] << 8)) != 0) {		errno = ENXIO;		return -1;	}	memcpy(value, rp + 13, length);	return 0;}int csr_read_usb(uint16_t varid, uint8_t *value, uint16_t length){	return do_command(0x0000, seqnum++, varid, value, length);}int csr_write_usb(uint16_t varid, uint8_t *value, uint16_t length){	return do_command(0x0002, seqnum++, varid, value, length);}void csr_close_usb(void){	usb_release_interface(udev, 0);	usb_close(udev);}