1 /* $NetBSD: init_csr.c,v 1.2 2009/12/06 12:29:48 kiyohara Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 Iain Hibbert 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * init information in this file gleaned from hciattach(8) 30 * command from BlueZ for Linux - see http://www.bluez.org/ 31 */ 32 33 #include <sys/cdefs.h> 34 __RCSID("$NetBSD: init_csr.c,v 1.2 2009/12/06 12:29:48 kiyohara Exp $"); 35 36 #include <bluetooth.h> 37 #include <errno.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <termios.h> 41 42 #include <dev/bluetooth/bcsp.h> 43 44 #include "btattach.h" 45 46 struct bccmd { 47 uint8_t chanid; 48 49 struct { 50 uint16_t type; 51 uint16_t length; 52 uint16_t seqno; 53 uint16_t varid; 54 uint16_t status; 55 uint16_t payload[4]; 56 } message; 57 } __attribute__ ((__packed__)); 58 59 #define CSR_BCCMD_FIRST (1<<6) 60 #define CSR_BCCMD_LAST (1<<7) 61 62 #define CSR_BCCMD_MESSAGE_TYPE_GETREQ 0x0000 63 #define CSR_BCCMD_MESSAGE_TYPE_GETRESP 0x0001 64 #define CSR_BCCMD_MESSAGE_TYPE_SETREQ 0x0002 65 66 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART 0x6802 67 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_STOPB 0x2000 68 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARENB 0x4000 69 #define CSR_BCCMD_MESSAGE_VARID_CONFIG_UART_PARODD 0x8000 70 71 #define CSR_BCCMD_MESSAGE_STATUS_OK 0x0000 72 #define CSR_BCCMD_MESSAGE_STATUS_NO_SUCH_VARID 0x0001 73 #define CSR_BCCMD_MESSAGE_STATUS_TOO_BIG 0x0002 74 #define CSR_BCCMD_MESSAGE_STATUS_NO_VALUE 0x0003 75 #define CSR_BCCMD_MESSAGE_STATUS_BAD_REQ 0x0004 76 #define CSR_BCCMD_MESSAGE_STATUS_NO_ACCESS 0x0005 77 #define CSR_BCCMD_MESSAGE_STATUS_READ_ONLY 0x0006 78 #define CSR_BCCMD_MESSAGE_STATUS_WRITE_ONLY 0x0007 79 #define CSR_BCCMD_MESSAGE_STATUS_ERROR 0x0008 80 #define CSR_BCCMD_MESSAGE_STATUS_PERMISION_DENIED 0x0009 81 82 void 83 init_csr(int fd, unsigned int speed) 84 { 85 struct bccmd cmd; 86 87 /* setup BlueCore command packet */ 88 memset(&cmd, 0, sizeof(cmd)); 89 90 cmd.chanid = CSR_BCCMD_LAST | CSR_BCCMD_FIRST | BCSP_CHANNEL_BCCMD; 91 92 cmd.message.type = htole16(CSR_BCCMD_MESSAGE_TYPE_SETREQ); 93 cmd.message.length = htole16(sizeof(cmd.message) >> 1); 94 cmd.message.seqno = htole16(0); 95 cmd.message.varid = htole16(CSR_BCCMD_MESSAGE_VARID_CONFIG_UART); 96 cmd.message.status = htole16(CSR_BCCMD_MESSAGE_STATUS_OK); 97 98 /* Value = (baud rate / 244.140625) | no parity | 1 stop bit. */ 99 cmd.message.payload[0] = htole16((speed * 64 + 7812) / 15625); 100 101 uart_send_cmd(fd, HCI_CMD_CSR_EXTN, &cmd, sizeof(cmd)); 102 uart_recv_cc(fd, HCI_CMD_CSR_EXTN, NULL, 0); 103 /* assume it succeeded? */ 104 } 105