/* $NetBSD: lptvar.h,v 1.10 2008/04/28 20:23:56 martin Exp $ */

/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gary Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef __DEV_PPBUS_LPTVAR_H
#define __DEV_PPBUS_LPTVAR_H

#include <machine/vmparam.h>
#include <dev/ppbus/ppbus_device.h>

/* #define LPINITRDY       4       wait up to 4 seconds for a ready
#define BUFSTATSIZE     32
#define LPTOUTINITIAL   10       initial timeout to wait for ready 1/10 s
#define LPTOUTMAX       1        maximal timeout 1 s */
#define LPPRI           (PZERO+8)
#define BUFSIZE         PAGE_SIZE

#define LPTUNIT(s)      (minor(s) & 0xff)
#define LPTCTL(s)       (minor(s) & 0x100)

/* Wait up to 16 seconds for a ready */
#define LPT_TIMEOUT             ((hz)*16)
#define LPT_STEP                ((hz)/4)

struct lpt_softc {
       struct ppbus_device_softc ppbus_dev;

       int sc_state;
/* bits for state */
#define OPEN            (unsigned)(1<<0)  /* device is open */
#define ASLP            (unsigned)(1<<1)  /* awaiting draining of printer */
#define EERROR          (unsigned)(1<<2)  /* error was received from printer */
#define OBUSY           (unsigned)(1<<3)  /* printer is busy doing output */
#define LPTOUT          (unsigned)(1<<4)  /* timeout while not selected */
#define TOUT            (unsigned)(1<<5)  /* timeout while not selected */
#define LPTINIT         (unsigned)(1<<6)  /* waiting to initialize for open */
#define INTERRUPTED     (unsigned)(1<<7)  /* write call was interrupted */
#define HAVEBUS         (unsigned)(1<<8)  /* the driver owns the bus */

       int sc_flags;           /* flags from lptio.h */

       void *sc_inbuf;
       void *sc_outbuf;
       bus_addr_t sc_in_baddr;
       bus_addr_t sc_out_baddr;
};

#define MAX_SLEEP       (hz*5)  /* Timeout while waiting for device ready */
#define MAX_SPIN        20      /* Max delay for device ready in usecs */

#ifdef LPT_DEBUG
static volatile int lptdebug = 1;
#ifndef LPT_DPRINTF
#define LPT_DPRINTF(arg) if(lptdebug) printf arg
#else
#define LPT_DPRINTF(arg) if(lptdebug) printf("WARNING: LPT_DPRINTF " \
       "REDEFINED!!!")
#endif /* LPT_DPRINTF */
#else
#define LPT_DPRINTF(arg)
#endif /* LPT_DEBUG */

#ifdef LPT_VERBOSE
static volatile int lptverbose = 1;
#ifndef LPT_VPRINTF
#define LPT_VPRINTF(arg) if(lptverbose) printf arg
#else
#define LPT_VPRINTF(arg) if(lptverbose) printf("WARNING: LPT_VPRINTF " \
       "REDEFINED!!!")
#endif /* LPT_VPRINTF */
#else
#define LPT_VPRINTF(arg)
#endif /* LPT_VERBOSE */

#endif /* __DEV_PPBUS_LPTVAR_H */