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147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*
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* $Id$
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*
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* Cable driver interface
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* Copyright (C) 2003 ETC s.r.o.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by Marcel Telka <marcel@telka.sk>, 2003.
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*
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*/
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#ifndef CABLE_H
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#define CABLE_H
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#include <stdint.h>
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typedef struct cable_t cable_t;
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#include "parport.h"
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#include "chain.h"
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typedef struct cable_driver_t cable_driver_t;
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typedef enum
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{
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OPTIONALLY,
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CONSERVATIVELY,
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TO_OUTPUT,
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COMPLETELY
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}
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cable_flush_amount_t;
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struct cable_driver_t {
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const char *name;
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const char *description;
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int (*connect)( char *params[], cable_t *cable );
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void (*disconnect)( cable_t *cable );
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void (*cable_free)( cable_t *cable );
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int (*init)( cable_t * );
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void (*done)( cable_t * );
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void (*clock)( cable_t *, int, int, int );
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int (*get_tdo)( cable_t * );
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int (*transfer)( cable_t *, int, char *, char * );
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int (*set_trst)( cable_t *, int );
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int (*get_trst)( cable_t * );
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void (*flush)( cable_t *, cable_flush_amount_t );
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void (*help)( const char * );
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};
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typedef struct cable_queue_t cable_queue_t;
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struct cable_queue_t {
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enum {
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CABLE_CLOCK,
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CABLE_GET_TDO,
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CABLE_TRANSFER,
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CABLE_SET_TRST,
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CABLE_GET_TRST
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} action;
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union {
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struct {
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int tms;
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int tdi;
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int n;
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} clock;
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struct {
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int tdo;
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int trst;
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int val;
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} value;
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struct {
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int len;
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char *in;
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char *out;
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} transfer;
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struct {
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int len;
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int res;
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char *out;
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} xferred;
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} arg;
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};
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typedef struct cable_queue_info_t cable_queue_info_t;
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struct cable_queue_info_t {
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cable_queue_t *data;
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int max_items;
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int num_items;
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int next_item;
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int next_free;
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};
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struct cable_t {
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cable_driver_t *driver;
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parport_t *port;
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void *params;
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chain_t *chain;
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cable_queue_info_t todo;
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cable_queue_info_t done;
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uint32_t delay;
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uint32_t frequency;
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};
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void cable_free( cable_t *cable );
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int cable_init( cable_t *cable );
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void cable_done( cable_t *cable );
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void cable_flush( cable_t *cable, cable_flush_amount_t );
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void cable_clock( cable_t *cable, int tms, int tdi, int n );
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int cable_defer_clock( cable_t *cable, int tms, int tdi, int n );
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int cable_get_tdo( cable_t *cable );
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int cable_get_tdo_late( cable_t *cable );
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int cable_defer_get_tdo( cable_t *cable );
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int cable_set_trst( cable_t *cable, int trst );
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int cable_defer_set_trst( cable_t *cable, int trst );
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int cable_get_trst( cable_t *cable );
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int cable_get_trst_late( cable_t *cable );
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int cable_defer_get_trst( cable_t *cable );
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int cable_transfer( cable_t *cable, int len, char *in, char *out );
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int cable_transfer_late( cable_t *cable, char *out );
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int cable_defer_transfer( cable_t *cable, int len, char *in, char *out );
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void cable_set_frequency( cable_t *cable, uint32_t frequency );
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uint32_t cable_get_frequency( cable_t *cable );
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void cable_wait( cable_t *cable );
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void cable_purge_queue( cable_queue_info_t *q, int io );
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int cable_add_queue_item( cable_t *cable, cable_queue_info_t *q );
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int cable_get_queue_item( cable_t *cable, cable_queue_info_t *q );
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extern cable_driver_t *cable_drivers[];
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#endif /* CABLE_H */
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