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ppbus_1284.h revision 1.8 
      1 /* $NetBSD: ppbus_1284.h,v 1.8 2009/04/05 09:56:16 cegger 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 #include <sys/device.h>	/* for device_t */
     35 
     36 /*
     37  * IEEE1284 signals
     38  */
     39 
     40 /* host driven signals */
     41 
     42 #define nHostClk	STROBE
     43 #define Write		STROBE
     44 
     45 #define nHostBusy	AUTOFEED
     46 #define nHostAck	AUTOFEED
     47 #define DStrb		AUTOFEED
     48 
     49 #define nReveseRequest	nINIT
     50 
     51 #define nActive1284	SELECTIN
     52 #define AStrb		SELECTIN
     53 
     54 /* peripheral driven signals */
     55 
     56 #define nDataAvail	nFAULT
     57 #define nPeriphRequest	nFAULT
     58 
     59 #define Xflag		SELECT
     60 
     61 #define AckDataReq	PERROR
     62 #define nAckReverse	PERROR
     63 
     64 #define nPtrBusy	nBUSY
     65 #define nPeriphAck	nBUSY
     66 #define Wait		nBUSY
     67 
     68 #define PtrClk		nACK
     69 #define PeriphClk	nACK
     70 #define Intr		nACK
     71 
     72 /* request mode values */
     73 #define NIBBLE_1284_NORMAL	0x0
     74 #define NIBBLE_1284_REQUEST_ID	0x4
     75 #define BYTE_1284_NORMAL	0x1
     76 #define BYTE_1284_REQUEST_ID	0x5
     77 #define ECP_1284_NORMAL		0x10
     78 #define ECP_1284_REQUEST_ID	0x14
     79 #define ECP_1284_RLE		0x30
     80 #define ECP_1284_RLE_REQUEST_ID	0x34
     81 #define EPP_1284_NORMAL		0x40
     82 #define EXT_LINK_1284_NORMAL	0x80
     83 
     84 /* ieee1284 mode options */
     85 #define PPBUS_REQUEST_ID		0x1
     86 #define PPBUS_USE_RLE		0x2
     87 #define PPBUS_EXTENSIBILITY_LINK	0x4
     88 
     89 /* ieee1284 errors */
     90 #define PPBUS_NO_ERROR		0
     91 #define PPBUS_MODE_UNSUPPORTED	1	/* mode not supported by peripheral */
     92 #define PPBUS_NOT_IEEE1284	2	/* not an IEEE1284 compliant periph. */
     93 #define PPBUS_TIMEOUT		3	/* timeout */
     94 #define PPBUS_INVALID_MODE	4	/* current mode is incorrect */
     95 
     96 /* ieee1284 host side states */
     97 #define PPBUS_ERROR			0
     98 #define PPBUS_FORWARD_IDLE		1
     99 #define PPBUS_NEGOTIATION			2
    100 #define PPBUS_SETUP			3
    101 #define PPBUS_ECP_FORWARD_IDLE		4
    102 #define PPBUS_FWD_TO_REVERSE		5
    103 #define PPBUS_REVERSE_IDLE		6
    104 #define PPBUS_REVERSE_TRANSFER		7
    105 #define PPBUS_REVERSE_TO_FWD		8
    106 #define PPBUS_EPP_IDLE			9
    107 #define PPBUS_TERMINATION			10
    108 
    109 /* peripheral side states */
    110 #define PPBUS_PERIPHERAL_NEGOTIATION	11
    111 #define PPBUS_PERIPHERAL_IDLE		12
    112 #define PPBUS_PERIPHERAL_TRANSFER		13
    113 #define PPBUS_PERIPHERAL_TERMINATION	14
    114 
    115 /* Function prototypes */
    116 
    117 /* Host functions */
    118 int ppbus_1284_negotiate(device_t, int, int);
    119 int ppbus_1284_terminate(device_t);
    120 int ppbus_1284_read_id(device_t, int, char **, size_t *, size_t *);
    121 int ppbus_1284_get_state(device_t);
    122 int ppbus_1284_set_state(device_t, int state);
    123 
    124 /* Peripheral functions */
    125 int ppbus_peripheral_terminate(device_t, int);
    126 int ppbus_peripheral_negotiate(device_t, int, int);
    127 int byte_peripheral_write(device_t, char *, int, int *);
    128 
    129 #endif /* __PPBUS_1284_H */
    130