sys/arch/pmax/tc/dtvar.h

   1 /*      $NetBSD: dtvar.h,v 1.4 2005/12/11 12:18:41 christos Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Andrew Doran.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _DTVAR_H_
  33 #define _DTVAR_H_
  34
  35 #define DT_DEVICE_NO(a)         (((a) - DT_ADDR_FIRST) >> 1)
  36 #define DT_GET_SHORT(b0, b1)    (((b0) << 8) | (b1))
  37
  38 struct dt_msg {
  39         uint8_t dst;
  40         uint8_t src;
  41         uint8_t ctl;
  42
  43         /* varzise, checksum byte at end */
  44         uint8_t body[DT_MAX_MSG_SIZE-3];
  45
  46         union {
  47                 SLIST_ENTRY(dt_msg) slist;
  48                 SIMPLEQ_ENTRY(dt_msg) simpleq;
  49         } chain;
  50 };
  51
  52 #define DT_CTL(l, s, p) \
  53     ((l & 0x1f) | ((s & 0x03) << 5) | ((p & 0x01) << 7))
  54 #define DT_CTL_P(c)             ((c >> 7) & 0x01)
  55 #define DT_CTL_SUBADDR(c)       ((c >> 5) & 0x03)
  56 #define DT_CTL_LEN(c)           (c & 0x1f)
  57
  58 struct dt_device {
  59         struct  device *dtdv_dv;
  60         void    (*dtdv_handler)(void *, struct dt_msg *);
  61 };
  62
  63 struct dt_state {
  64         volatile u_int  *ds_data;
  65         volatile u_int  *ds_poll;
  66         int             ds_bad_pkts;
  67         int             ds_state;
  68         int             ds_escaped;
  69         int             ds_len;
  70         int             ds_ptr;
  71 };
  72
  73 struct dt_softc {
  74         struct device   sc_dv;
  75         struct dt_msg   sc_msg;
  76         void            *sc_sih;
  77         SLIST_HEAD(, dt_msg) sc_free;
  78         SIMPLEQ_HEAD(, dt_msg) sc_queue;
  79 };
  80
  81 struct dt_attach_args {
  82         int     dta_addr;
  83 };
  84
  85 #define DT_GET_ERROR    -1
  86 #define DT_GET_DONE     0
  87 #define DT_GET_NOTYET   1
  88
  89 void    dt_cninit(void);
  90 int     dt_identify(int, struct dt_ident *);
  91 int     dt_msg_get(struct dt_msg *, int);
  92 void    dt_msg_dump(struct dt_msg *);
  93 int     dt_establish_handler(struct dt_softc *, struct dt_device *,
  94     struct device *, void (*)(void *, struct dt_msg *));
  95
  96 extern int      dt_kbd_addr;
  97 extern struct   dt_device dt_kbd_dv;
  98 extern int      dt_ms_addr;
  99 extern struct   dt_device dt_ms_dv;
 100 extern struct   dt_state dt_state;
 101
 102 #endif  /* !_DTVAR_H_ */