129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
/* $NetBSD: bth5.h,v 1.1 2017/08/10 13:22:19 nat Exp $ */
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/*
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* Copyright (c) 2017 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* All rights reserved.
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*
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* Copyright (c) 2007 KIYOHARA Takashi
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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
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_BLUETOOTH_BTH5_H_
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#define _DEV_BLUETOOTH_BTH5_H_
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/*
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* BT UART H5 (3-wire) serial protocol definitions.
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*/
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/* BTH5 packet header */
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typedef struct {
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uint8_t flags;
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#if BYTE_ORDER == BIG_ENDIAN
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uint8_t plen1 :4; /* Payload Length (bits 0-3) */
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uint8_t ident :4; /* Protocol Identifier */
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#else
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uint8_t ident :4; /* Protocol Identifier */
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uint8_t plen1 :4; /* Payload Length (bits 0-3) */
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#endif
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uint8_t plen2; /* Payload Length (bits 4-11) */
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uint8_t csum; /* Checksum */
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u_char payload[0];
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} __packed bth5_hdr_t;
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#define BTH5_FLAGS_SEQ_SHIFT 0
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#define BTH5_FLAGS_SEQ_MASK 0x07
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#define BTH5_FLAGS_SEQ(n) \
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(((n) & BTH5_FLAGS_SEQ_MASK) >> BTH5_FLAGS_SEQ_SHIFT)
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#define BTH5_FLAGS_ACK_SHIFT 3
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#define BTH5_FLAGS_ACK_MASK 0x38
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#define BTH5_FLAGS_ACK(n) \
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(((n) & BTH5_FLAGS_ACK_MASK) >> BTH5_FLAGS_ACK_SHIFT)
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#define BTH5_FLAGS_CRC_PRESENT 0x40
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#define BTH5_FLAGS_PROTOCOL_TYPE 0x80
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#define BTH5_FLAGS_PROTOCOL_REL 0x80
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#define BTH5_SET_PLEN(hdrp, n) \
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do { \
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(hdrp)->plen1 = ((n) & 0x00f); \
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(hdrp)->plen2 = ((n) >> 4); \
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} while (0)
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#define BTH5_GET_PLEN(hdrp) ((hdrp)->plen1 | ((hdrp)->plen2 << 4))
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#define BTH5_GET_CSUM(hdrp) \
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(0xff - (uint8_t)((hdrp)->flags + ((hdrp)->plen1 << 4) + \
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(hdrp)->ident + (hdrp)->plen2))
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#define BTH5_SET_CSUM(hdrp) ((hdrp)->csum = BTH5_GET_CSUM(hdrp))
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#define BTH5_IDENT_ACKPKT 0 /* Used by MUX Layer */
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/* Other Protocol Identifier values described to bcore-sp-007P */
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/* definitions of SLIP Layer */
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#define BTH5_SLIP_PKTSTART 0xc0
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#define BTH5_SLIP_PKTEND BTH5_SLIP_PKTSTART
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#define BTH5_SLIP_XON 0x11
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#define BTH5_SLIP_XOFF 0x13
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#define BTH5_SLIP_ESCAPE 0xdb
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#define BTH5_SLIP_ESCAPE_PKTEND 0xdc
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#define BTH5_SLIP_ESCAPE_ESCAPE 0xdd
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#define BTH5_SLIP_ESCAPE_XON 0xde
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#define BTH5_SLIP_ESCAPE_XOFF 0xdf
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/* definitions of Sequencing Layer */
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#define BTH5_SEQ_TX_TIMEOUT (hz / 4) /* 250 msec */
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#define BTH5_SEQ_TX_WINSIZE 7
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#define BTH5_SEQ_TX_RETRY_LIMIT 20
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/*
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* Reference to bcore-sp-007p.
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* Channel Allocation
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*/
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#define BTH5_CHANNEL_HCI_CMD 1 /* HCI Command and Event */
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#define BTH5_CHANNEL_HCI_EVT 4 /* HCI Command and Event */
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#define BTH5_CHANNEL_HCI_ACL 2 /* HCI ACL data */
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#define BTH5_CHANNEL_HCI_SCO 3 /* HCI SCO data */
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#define BTH5_CHANNEL_LE 15 /* Link Establishment */
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/*
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* Link Establishment Protocol
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*/
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typedef enum {
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le_state_shy,
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le_state_curious,
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le_state_garrulous
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} bth5_le_state_t;
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#define BTH5_LE_SYNC { 0x01, 0x7e };
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#define BTH5_LE_SYNCRESP { 0x02, 0x7d };
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#define BTH5_LE_CONF { 0x03, 0xfc, 0x0f };
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#define BTH5_LE_CONFRESP { 0x04, 0x7b, 0x0f };
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#define BTH5_LE_TSHY_TIMEOUT hz /* XXXX: 1sec ? */
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#define BTH5_LE_TCONF_TIMEOUT hz /* XXXX: 1sec ? */
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#endif /* !_DEV_BLUETOOTH_BTH5_H_ */
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