110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/* $NetBSD: dtvar.h,v 1.3 2003/12/23 09:39:46 ad Exp $ */
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/*-
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* Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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 _DTVAR_H_
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#define _DTVAR_H_
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#define DT_DEVICE_NO(a) (((a) - DT_ADDR_FIRST) >> 1)
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#define DT_GET_SHORT(b0, b1) (((b0) << 8) | (b1))
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struct dt_msg {
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uint8_t dst;
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uint8_t src;
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uint8_t ctl;
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/* varzise, checksum byte at end */
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uint8_t body[DT_MAX_MSG_SIZE-3];
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union {
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SLIST_ENTRY(dt_msg) slist;
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SIMPLEQ_ENTRY(dt_msg) simpleq;
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} chain;
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};
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#define DT_CTL(l, s, p) \
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((l & 0x1f) | ((s & 0x03) << 5) | ((p & 0x01) << 7))
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#define DT_CTL_P(c) ((c >> 7) & 0x01)
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#define DT_CTL_SUBADDR(c) ((c >> 5) & 0x03)
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#define DT_CTL_LEN(c) (c & 0x1f)
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struct dt_device {
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struct device *dtdv_dv;
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void (*dtdv_handler)(void *, struct dt_msg *);
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};
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struct dt_state {
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volatile u_int *ds_data;
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volatile u_int *ds_poll;
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int ds_bad_pkts;
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int ds_state;
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int ds_escaped;
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int ds_len;
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int ds_ptr;
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};
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struct dt_softc {
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struct device sc_dv;
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struct dt_msg sc_msg;
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void *sc_sih;
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SLIST_HEAD(, dt_msg) sc_free;
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SIMPLEQ_HEAD(, dt_msg) sc_queue;
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};
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struct dt_attach_args {
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int dta_addr;
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};
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#define DT_GET_ERROR -1
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#define DT_GET_DONE 0
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#define DT_GET_NOTYET 1
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void dt_cninit(void);
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int dt_identify(int, struct dt_ident *);
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int dt_msg_get(struct dt_msg *, int);
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void dt_msg_dump(struct dt_msg *);
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int dt_establish_handler(struct dt_softc *, struct dt_device *,
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struct device *, void (*)(void *, struct dt_msg *));
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extern int dt_kbd_addr;
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extern struct dt_device dt_kbd_dv;
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extern int dt_ms_addr;
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extern struct dt_device dt_ms_dv;
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extern struct dt_state dt_state;
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#endif /* !_DTVAR_H_ */
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