/* * *  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 <sys/socket.h>#include <bluetooth/bluetooth.h>#include <bluetooth/hci.h>#include <bluetooth/hci_lib.h>#include "csr.h"static uint16_t seqnum = 0x0000;static int dd = -1;int csr_open_hci(char *device){	struct hci_dev_info di;	struct hci_version ver;	int dev = 0;	if (device) {		dev = hci_devid(device);		if (dev < 0) {			fprintf(stderr, "Device not available\n");			return -1;		}	}	dd = hci_open_dev(dev);	if (dd < 0) {		fprintf(stderr, "Can't open device hci%d: %s (%d)\n",						dev, strerror(errno), errno);		return -1;	}	if (hci_devinfo(dev, &di) < 0) {		fprintf(stderr, "Can't get device info for hci%d: %s (%d)\n",						dev, strerror(errno), errno);		hci_close_dev(dd);		return -1;	}	if (hci_read_local_version(dd, &ver, 1000) < 0) {		fprintf(stderr, "Can't read version info for hci%d: %s (%d)\n",						dev, strerror(errno), errno);		hci_close_dev(dd);		return -1;	}	if (ver.manufacturer != 10) {		fprintf(stderr, "Unsupported manufacturer\n");		hci_close_dev(dd);		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];	struct hci_request rq;	uint8_t cmd[10];	uint16_t size;	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] = 0xc2;	memcpy(cp + 1, cmd, sizeof(cmd));	memcpy(cp + 11, value, length);	switch (varid) {	case CSR_VARID_COLD_RESET:	case CSR_VARID_WARM_RESET:	case CSR_VARID_COLD_HALT:	case CSR_VARID_WARM_HALT:		return hci_send_cmd(dd, OGF_VENDOR_CMD, 0x00, (size * 2) + 1, cp);	}	memset(&rq, 0, sizeof(rq));	rq.ogf    = OGF_VENDOR_CMD;	rq.ocf    = 0x00;	rq.event  = EVT_VENDOR;	rq.cparam = cp;	rq.clen   = (size * 2) + 1;	rq.rparam = rp;	rq.rlen   = sizeof(rp);	if (hci_send_req(dd, &rq, 2000) < 0)		return -1;	if (rp[0] != 0xc2) {		errno = EIO;		return -1;	}	if ((rp[9] + (rp[10] << 8)) != 0) {		errno = ENXIO;		return -1;	}	memcpy(value, rp + 11, length);	return 0;}int csr_read_hci(uint16_t varid, uint8_t *value, uint16_t length){	return do_command(0x0000, seqnum++, varid, value, length);}int csr_write_hci(uint16_t varid, uint8_t *value, uint16_t length){	return do_command(0x0002, seqnum++, varid, value, length);}void csr_close_hci(void){	hci_close_dev(dd);}