NetBSD/usr.sbin/btattach/init_csr.c

105 lines
3.6 KiB
C

/* $NetBSD: init_csr.c,v 1.2 2009/12/06 12:29:48 kiyohara Exp $ */
/*-
* Copyright (c) 2008 Iain Hibbert
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* init information in this file gleaned from hciattach(8)
* command from BlueZ for Linux - see http://www.bluez.org/
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: init_csr.c,v 1.2 2009/12/06 12:29:48 kiyohara Exp $");
#include <bluetooth.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <dev/bluetooth/bcsp.h>
#include "btattach.h"
struct bccmd {
uint8_t chanid;
struct {
uint16_t type;
uint16_t length;
uint16_t seqno;
uint16_t varid;
uint16_t status;
uint16_t payload[4];
} message;
} __attribute__ ((__packed__));
#define CSR_BCCMD_FIRST (1<<6)
#define CSR_BCCMD_LAST (1<<7)
#define CSR_BCCMD_MESSAGE_TYPE_GETREQ 0x0000
#define CSR_BCCMD_MESSAGE_TYPE_GETRESP 0x0001
#define CSR_BCCMD_MESSAGE_TYPE_SETREQ 0x0002
#define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART 0x6802
#define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_STOPB 0x2000
#define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARENB 0x4000
#define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARODD 0x8000
#define CSR_BCCMD_MESSAGE_STATUS_OK 0x0000
#define CSR_BCCMD_MESSAGE_STATUS_NO_SUCH_VARID 0x0001
#define CSR_BCCMD_MESSAGE_STATUS_TOO_BIG 0x0002
#define CSR_BCCMD_MESSAGE_STATUS_NO_VALUE 0x0003
#define CSR_BCCMD_MESSAGE_STATUS_BAD_REQ 0x0004
#define CSR_BCCMD_MESSAGE_STATUS_NO_ACCESS 0x0005
#define CSR_BCCMD_MESSAGE_STATUS_READ_ONLY 0x0006
#define CSR_BCCMD_MESSAGE_STATUS_WRITE_ONLY 0x0007
#define CSR_BCCMD_MESSAGE_STATUS_ERROR 0x0008
#define CSR_BCCMD_MESSAGE_STATUS_PERMISION_DENIED 0x0009
void
init_csr(int fd, unsigned int speed)
{
struct bccmd cmd;
/* setup BlueCore command packet */
memset(&cmd, 0, sizeof(cmd));
cmd.chanid = CSR_BCCMD_LAST | CSR_BCCMD_FIRST | BCSP_CHANNEL_BCCMD;
cmd.message.type = htole16(CSR_BCCMD_MESSAGE_TYPE_SETREQ);
cmd.message.length = htole16(sizeof(cmd.message) >> 1);
cmd.message.seqno = htole16(0);
cmd.message.varid = htole16(CSR_BCCMD_MESSAGE_VARID_CONFIG_UART);
cmd.message.status = htole16(CSR_BCCMD_MESSAGE_STATUS_OK);
/* Value = (baud rate / 244.140625) | no parity | 1 stop bit. */
cmd.message.payload[0] = htole16((speed * 64 + 7812) / 15625);
uart_send_cmd(fd, HCI_CMD_CSR_EXTN, &cmd, sizeof(cmd));
uart_recv_cc(fd, HCI_CMD_CSR_EXTN, NULL, 0);
/* assume it succeeded? */
}