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/*
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* libieee1284 - IEEE 1284 library
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* Copyright (C) 2001, 2002, 2003 Tim Waugh <twaugh@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 02111-1307 USA
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*/
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// The virtualized interface. This allows different implementations
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// of each function, without the runtime hit of having to decide which
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// implementation to use every time the function is called.
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#ifndef _DETECT_H_
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#define _DETECT_H_
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#include <stdlib.h>
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#ifndef _MSC_VER
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#include <sys/time.h>
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#else
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#include <winsock2.h>
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#endif
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#if (defined __MINGW32__ || defined _MSC_VER) && !defined OWN_SSIZE_T
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#include <basetsd.h> /* for SSIZE_T */
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#define OWN_SSIZE_T
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typedef SSIZE_T ssize_t;
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#endif
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struct parport;
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struct parport_internal;
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struct parport_access_methods
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{
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int (*init) (struct parport *pport, int flags, int *capabilities);
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void (*cleanup) (struct parport_internal *port);
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int (*claim) (struct parport_internal *port);
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void (*release) (struct parport_internal *port);
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unsigned char (*do_inb) (struct parport_internal *port, unsigned long addr);
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void (*do_outb) (struct parport_internal *port, unsigned char val,
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unsigned long addr);
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int (*get_irq_fd) (struct parport_internal *port);
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int (*clear_irq) (struct parport_internal *port, unsigned int *count);
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int (*read_data) (struct parport_internal *port);
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void (*write_data) (struct parport_internal *port, unsigned char st);
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int (*wait_data) (struct parport_internal *port, unsigned char mask,
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unsigned char val, struct timeval *timeout);
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int (*data_dir) (struct parport_internal *port, int reverse);
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int (*read_status) (struct parport_internal *port);
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int (*wait_status) (struct parport_internal *port,
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unsigned char mask, unsigned char val,
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struct timeval *timeout);
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int (*read_control) (struct parport_internal *port);
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void (*write_control) (struct parport_internal *port,
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unsigned char ct);
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void (*frob_control) (struct parport_internal *port,
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unsigned char mask, unsigned char val);
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int (*do_nack_handshake) (struct parport_internal *port,
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unsigned char ct_before,
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unsigned char ct_after,
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struct timeval *timeout);
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int (*negotiate) (struct parport_internal *port, int mode);
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void (*terminate) (struct parport_internal *port);
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int (*ecp_fwd_to_rev) (struct parport_internal *port);
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int (*ecp_rev_to_fwd) (struct parport_internal *port);
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ssize_t (*nibble_read) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*compat_write) (struct parport_internal *port, int flags,
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const char *buffer, size_t len);
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ssize_t (*byte_read) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*epp_read_data) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*epp_write_data) (struct parport_internal *port, int flags,
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const char *buffer, size_t len);
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ssize_t (*epp_read_addr) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*epp_write_addr) (struct parport_internal *port, int flags,
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const char *buffer, size_t len);
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ssize_t (*ecp_read_data) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*ecp_write_data) (struct parport_internal *port, int flags,
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const char *buffer, size_t len);
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ssize_t (*ecp_read_addr) (struct parport_internal *port, int flags,
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char *buffer, size_t len);
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ssize_t (*ecp_write_addr) (struct parport_internal *port, int flags,
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const char *buffer, size_t len);
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struct timeval *(*set_timeout) (struct parport_internal *port,
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struct timeval *timeout);
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};
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enum ieee1284_phase {
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PH1284_FWD_DATA,
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PH1284_FWD_IDLE,
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PH1284_TERMINATE,
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PH1284_NEGOTIATION,
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PH1284_HBUSY_DNA,
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PH1284_REV_IDLE,
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PH1284_HBUSY_DAVAIL,
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PH1284_REV_DATA,
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PH1284_ECP_SETUP,
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PH1284_ECP_FWD_TO_REV,
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PH1284_ECP_REV_TO_FWD,
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PH1284_ECP_DIR_UNKNOWN,
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};
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struct parport_internal
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{
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int type;
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char *device;
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char *udevice;
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unsigned long base;
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unsigned long base_hi;
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int interrupt;
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int fd;
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int opened;
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int claimed;
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unsigned char ctr;
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/* IEEE 1284 stuff */
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int current_mode;
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int current_channel;
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/* For ECPSWE */
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enum ieee1284_phase current_phase;
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/* Reference count */
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int ref;
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struct parport_access_methods *fn;
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void *access_priv; /* For the access methods to use. */
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};
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#define IO_CAPABLE (1<<0)
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#define PPDEV_CAPABLE (1<<1)
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#define PROC_PARPORT_CAPABLE (1<<2)
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#define PROC_SYS_DEV_PARPORT_CAPABLE (1<<3)
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#define DEV_LP_CAPABLE (1<<4)
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#define DEV_PORT_CAPABLE (1<<5)
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#define LPT_CAPABLE (1<<6)
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extern int capabilities;
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extern int detect_environment (int forbidden);
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extern int deref_port (struct parport *port);
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#endif /* _DETECT_H_ */
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/*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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