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ppbus_1284.h revision 1.1 
      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 __PPBUS_1284_H
     30 #define __PPBUS_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 PPBUS_REQUEST_ID		0x1
     82 #define PPBUS_USE_RLE		0x2
     83 #define PPBUS_EXTENSIBILITY_LINK	0x4
     84 
     85 /* ieee1284 errors */
     86 #define PPBUS_NO_ERROR		0
     87 #define PPBUS_MODE_UNSUPPORTED	1	/* mode not supported by peripheral */
     88 #define PPBUS_NOT_IEEE1284	2	/* not an IEEE1284 compliant periph. */
     89 #define PPBUS_TIMEOUT		3	/* timeout */
     90 #define PPBUS_INVALID_MODE	4	/* current mode is incorrect */
     91 
     92 /* ieee1284 host side states */
     93 #define PPBUS_ERROR			0
     94 #define PPBUS_FORWARD_IDLE		1
     95 #define PPBUS_NEGOCIATION			2
     96 #define PPBUS_SETUP			3
     97 #define PPBUS_ECP_FORWARD_IDLE		4
     98 #define PPBUS_FWD_TO_REVERSE		5
     99 #define PPBUS_REVERSE_IDLE		6
    100 #define PPBUS_REVERSE_TRANSFER		7
    101 #define PPBUS_REVERSE_TO_FWD		8
    102 #define PPBUS_EPP_IDLE			9
    103 #define PPBUS_TERMINATION			10
    104 
    105 /* peripheral side states */
    106 #define PPBUS_PERIPHERAL_NEGOCIATION	11
    107 #define PPBUS_PERIPHERAL_IDLE		12
    108 #define PPBUS_PERIPHERAL_TRANSFER		13
    109 #define PPBUS_PERIPHERAL_TERMINATION	14
    110 
    111 #ifdef _KERNEL
    112 
    113 /* Function prototypes */
    114 
    115 /* Host functions */
    116 int ppbus_1284_negociate(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_negociate(struct device *, int, int);
    125 int byte_peripheral_write(struct device *, char *, int, int *);
    126 
    127 #endif /*_KERNEL*/
    128 
    129 #endif /* __PPBUS_1284_H */
    130