sys/bus/ppbus/ppb_1284.h

   1 /*-
   2  * Copyright (c) 1997 Nicolas Souchu
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sys/dev/ppbus/ppb_1284.h,v 1.7 2000/01/14 08:03:14 nsouch Exp $
  27  */
  28
  29 #ifndef __1284_H
  30 #define __1284_H
  31
  32 /*
  33  * IEEE1284 signals
  34  */
  35
  36 /* host driven signals */
  37
  38 #define nHostClk        STROBE
  39 #define Write           STROBE
  40
  41 #define nHostBusy       AUTOFEED
  42 #define nHostAck        AUTOFEED
  43 #define DStrb           AUTOFEED
  44
  45 #define nReveseRequest  nINIT
  46
  47 #define nActive1284     SELECTIN
  48 #define AStrb           SELECTIN
  49
  50 /* peripheral driven signals */
  51
  52 #define nDataAvail      nFAULT
  53 #define nPeriphRequest  nFAULT
  54
  55 #define Xflag           SELECT
  56
  57 #define AckDataReq      PERROR
  58 #define nAckReverse     PERROR
  59
  60 #define nPtrBusy        nBUSY
  61 #define nPeriphAck      nBUSY
  62 #define Wait            nBUSY
  63
  64 #define PtrClk          nACK
  65 #define PeriphClk       nACK
  66 #define Intr            nACK
  67
  68 /* request mode values */
  69 #define NIBBLE_1284_NORMAL      0x0
  70 #define NIBBLE_1284_REQUEST_ID  0x4
  71 #define BYTE_1284_NORMAL        0x1
  72 #define BYTE_1284_REQUEST_ID    0x5
  73 #define ECP_1284_NORMAL         0x10
  74 #define ECP_1284_REQUEST_ID     0x14
  75 #define ECP_1284_RLE            0x30
  76 #define ECP_1284_RLE_REQUEST_ID 0x34
  77 #define EPP_1284_NORMAL         0x40
  78 #define EXT_LINK_1284_NORMAL    0x80
  79
  80 /* ieee1284 mode options */
  81 #define PPB_REQUEST_ID          0x1
  82 #define PPB_USE_RLE             0x2
  83 #define PPB_EXTENSIBILITY_LINK  0x4
  84
  85 /* ieee1284 errors */
  86 #define PPB_NO_ERROR            0
  87 #define PPB_MODE_UNSUPPORTED    1       /* mode not supported by peripheral */
  88 #define PPB_NOT_IEEE1284        2       /* not an IEEE1284 compliant periph. */
  89 #define PPB_TIMEOUT             3       /* timeout */
  90 #define PPB_INVALID_MODE        4       /* current mode is incorrect */
  91
  92 /* ieee1284 host side states */
  93 #define PPB_ERROR                       0
  94 #define PPB_FORWARD_IDLE                1
  95 #define PPB_NEGOTIATION                 2
  96 #define PPB_SETUP                       3
  97 #define PPB_ECP_FORWARD_IDLE            4
  98 #define PPB_FWD_TO_REVERSE              5
  99 #define PPB_REVERSE_IDLE                6
 100 #define PPB_REVERSE_TRANSFER            7
 101 #define PPB_REVERSE_TO_FWD              8
 102 #define PPB_EPP_IDLE                    9
 103 #define PPB_TERMINATION                 10
 104
 105 /* peripheral side states */
 106 #define PPB_PERIPHERAL_NEGOTIATION      11
 107 #define PPB_PERIPHERAL_IDLE             12
 108 #define PPB_PERIPHERAL_TRANSFER         13
 109 #define PPB_PERIPHERAL_TERMINATION      14
 110
 111 extern int nibble_1284_inbyte(device_t, char *);
 112 extern int byte_1284_inbyte(device_t, char *);
 113 extern int spp_1284_read(device_t, int, char *, int, int *);
 114
 115 extern int ppb_1284_negotiate(device_t, int, int);
 116 extern int ppb_1284_terminate(device_t);
 117 extern int ppb_1284_read_id(device_t, int, char *, int, int *);
 118 extern int ppb_1284_read(device_t, int, char *, int, int *);
 119 extern int ppb_1284_get_state(device_t bus);
 120 extern int ppb_1284_set_state(device_t bus, int state);
 121
 122 extern int ppb_peripheral_terminate(device_t, int);
 123 extern int ppb_peripheral_negotiate(device_t, int, int);
 124 extern int byte_peripheral_write(device_t, char *, int, int *);
 125
 126 #endif