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
108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/* $NetBSD: init_swave.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_swave.c,v 1.1 2008/04/15 11:17:48 plunky Exp $");
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#include <bluetooth.h>
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#include <err.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 "btattach.h"
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#define HCI_CMD_SWAVE_PARAM_ACCESS_SET \
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HCI_OPCODE(HCI_OGF_VENDOR, 0x00b)
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typedef struct {
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uint8_t sub_command;
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uint8_t param_type;
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uint8_t param_length;
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uint8_t transport_flow;
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uint8_t transport_type;
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uint8_t transport_rate;
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} __attribute__ ((__packed__)) hci_param_access_set_cp;
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typedef struct {
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uint8_t d0; /* ? */
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hci_param_access_set_cp cp;
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} __attribute__ ((__packed__)) hci_param_access_set_rp;
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void
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init_swave(int fd, unsigned int speed)
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{
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hci_param_access_set_cp cp;
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hci_param_access_set_rp rp;
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size_t n;
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cp.sub_command = 0x01; /* set */
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cp.param_type = 0x11; /* HCI Transport */
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cp.param_length = 0x03;
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cp.transport_flow = 0x01; /* flow control */
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cp.transport_type = 0x01; /* UART */
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switch(speed) {
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case B19200: cp.transport_rate = 0x03; break;
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case B38400: cp.transport_rate = 0x02; break;
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case B57600: cp.transport_rate = 0x01; break;
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case B115200: cp.transport_rate = 0x00; break;
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default:
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errx(EXIT_FAILURE, "invalid speed for swave: %d\n", speed);
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}
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uart_send_cmd(fd, HCI_CMD_SWAVE_PARAM_ACCESS_SET, &cp, sizeof(cp));
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/*
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* we wait for a HCI_EVENT_VENDOR response with "0x0b" in the
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* first byte (possibly corresponding to the OGF?), and the
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* response should contain our settings as confirmation.
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*/
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do {
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n = uart_recv_ev(fd, HCI_EVENT_VENDOR, &rp, sizeof(rp));
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} while (n != sizeof(rp) || rp.d0 != 0x0b);
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if (memcmp(&cp, &rp.cp, sizeof(cp)))
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errx(EXIT_FAILURE, "param access set failed");
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/*
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* now send a soft reset to make those parameters used
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*/
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uart_send_cmd(fd, HCI_CMD_RESET, NULL, 0);
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/* assume it succeeded? */
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/* bluez also says there will be a confirmation packet
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* on the new baud rate - ignore that for now
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*/
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}
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