486e4624e5
btuartd(8) should be named btattach(8) for consistency with other parts of NetBSD make btattach(8) a single-use tool for less complexity device specicific initialisation (from btuart(4)) is carried out prior to activating the line discipline (in btattach(8)), which simplifies the API somewhat and means that the user tool and the kernel do not need to be kept in sync. btuart(4) driver is much reduced; naming is made consistent and all tsleep() and delay() are removed to userland
105 lines
3.6 KiB
C
105 lines
3.6 KiB
C
/* $NetBSD: init_csr.c,v 1.1 2008/04/15 11:17:48 plunky 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 1.1 2008/04/15 11:17:48 plunky 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 BCSP 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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