The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ppbus/ppb_1284.h

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    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: releng/11.0/sys/dev/ppbus/ppb_1284.h 55957 2000-01-14 08:03:15Z nsouch $
   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_NEGOCIATION                 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_NEGOCIATION      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_negociate(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_negociate(device_t, int, int);
  124 extern int byte_peripheral_write(device_t, char *, int, int *);
  125 
  126 #endif

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