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/ppbus_1284.h

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    1 /* $NetBSD: ppbus_1284.h,v 1.5 2004/01/28 17:11:48 jdolecek Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1997 Nicolas Souchu
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * FreeBSD: src/sys/dev/ppbus/ppb_1284.h,v 1.7 2000/01/14 08:03:14 nsouch Exp
   29  *
   30  */
   31 #ifndef __PPBUS_1284_H
   32 #define __PPBUS_1284_H
   33 
   34 /*
   35  * IEEE1284 signals
   36  */
   37 
   38 /* host driven signals */
   39 
   40 #define nHostClk        STROBE
   41 #define Write           STROBE
   42 
   43 #define nHostBusy       AUTOFEED
   44 #define nHostAck        AUTOFEED
   45 #define DStrb           AUTOFEED
   46 
   47 #define nReveseRequest  nINIT
   48 
   49 #define nActive1284     SELECTIN
   50 #define AStrb           SELECTIN
   51 
   52 /* peripheral driven signals */
   53 
   54 #define nDataAvail      nFAULT
   55 #define nPeriphRequest  nFAULT
   56 
   57 #define Xflag           SELECT
   58 
   59 #define AckDataReq      PERROR
   60 #define nAckReverse     PERROR
   61 
   62 #define nPtrBusy        nBUSY
   63 #define nPeriphAck      nBUSY
   64 #define Wait            nBUSY
   65 
   66 #define PtrClk          nACK
   67 #define PeriphClk       nACK
   68 #define Intr            nACK
   69 
   70 /* request mode values */
   71 #define NIBBLE_1284_NORMAL      0x0
   72 #define NIBBLE_1284_REQUEST_ID  0x4
   73 #define BYTE_1284_NORMAL        0x1
   74 #define BYTE_1284_REQUEST_ID    0x5
   75 #define ECP_1284_NORMAL         0x10
   76 #define ECP_1284_REQUEST_ID     0x14
   77 #define ECP_1284_RLE            0x30
   78 #define ECP_1284_RLE_REQUEST_ID 0x34
   79 #define EPP_1284_NORMAL         0x40
   80 #define EXT_LINK_1284_NORMAL    0x80
   81 
   82 /* ieee1284 mode options */
   83 #define PPBUS_REQUEST_ID                0x1
   84 #define PPBUS_USE_RLE           0x2
   85 #define PPBUS_EXTENSIBILITY_LINK        0x4
   86 
   87 /* ieee1284 errors */
   88 #define PPBUS_NO_ERROR          0
   89 #define PPBUS_MODE_UNSUPPORTED  1       /* mode not supported by peripheral */
   90 #define PPBUS_NOT_IEEE1284      2       /* not an IEEE1284 compliant periph. */
   91 #define PPBUS_TIMEOUT           3       /* timeout */
   92 #define PPBUS_INVALID_MODE      4       /* current mode is incorrect */
   93 
   94 /* ieee1284 host side states */
   95 #define PPBUS_ERROR                     0
   96 #define PPBUS_FORWARD_IDLE              1
   97 #define PPBUS_NEGOTIATION                       2
   98 #define PPBUS_SETUP                     3
   99 #define PPBUS_ECP_FORWARD_IDLE          4
  100 #define PPBUS_FWD_TO_REVERSE            5
  101 #define PPBUS_REVERSE_IDLE              6
  102 #define PPBUS_REVERSE_TRANSFER          7
  103 #define PPBUS_REVERSE_TO_FWD            8
  104 #define PPBUS_EPP_IDLE                  9
  105 #define PPBUS_TERMINATION                       10
  106 
  107 /* peripheral side states */
  108 #define PPBUS_PERIPHERAL_NEGOTIATION    11
  109 #define PPBUS_PERIPHERAL_IDLE           12
  110 #define PPBUS_PERIPHERAL_TRANSFER               13
  111 #define PPBUS_PERIPHERAL_TERMINATION    14
  112 
  113 /* Function prototypes */
  114 
  115 /* Host functions */
  116 int ppbus_1284_negotiate(struct device *, int, int);
  117 int ppbus_1284_terminate(struct device *);
  118 int ppbus_1284_read_id(struct device *, int, char **, size_t *, size_t *);
  119 int ppbus_1284_get_state(struct device *);
  120 int ppbus_1284_set_state(struct device *, int state);
  121 
  122 /* Peripheral functions */
  123 int ppbus_peripheral_terminate(struct device *, int);
  124 int ppbus_peripheral_negotiate(struct device *, int, int);
  125 int byte_peripheral_write(struct device *, char *, int, int *);
  126 
  127 #endif /* __PPBUS_1284_H */

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