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