/* $NetBSD: ppbus_conf.h,v 1.12 2011/02/18 21:38:17 phx Exp $ */

/*-
* Copyright (c) 1997, 1998, 1999 Nicolas Souchu
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD: src/sys/dev/ppbus/ppbconf.h,v 1.17.2.1 2000/05/24 00:20:57 n_hibma Exp $
*
*/
#ifndef __PPBUS_CONF_H
#define __PPBUS_CONF_H

#include "gpio.h"

#include <sys/device.h>
#include <sys/gpio.h>
#include <sys/mutex.h>
#include <sys/queue.h>

#include <sys/bus.h>

#include <dev/ppbus/ppbus_msq.h>
#include <dev/ppbus/ppbus_device.h>

#if NGPIO > 0
#include <dev/gpio/gpiovar.h>
#define PPBUS_NPINS 17
#endif

/* Function pointer types used for interface */
typedef u_char (*PARPORT_IO_T)(device_t, int, u_char *, int, u_char);
typedef int (*PARPORT_EXEC_MICROSEQ_T)(device_t,
       struct ppbus_microseq **);
typedef void (*PARPORT_RESET_EPP_TIMEOUT_T)(device_t);
typedef int (*PARPORT_SETMODE_T)(device_t, int);
typedef int (*PARPORT_GETMODE_T)(device_t);
typedef void (*PARPORT_ECP_SYNC_T)(device_t);
typedef int (*PARPORT_READ_T)(device_t, char *, int, int, size_t *);
typedef int (*PARPORT_WRITE_T)(device_t, char *, int, int, size_t *);
typedef int (*PARPORT_READ_IVAR_T)(device_t, int, unsigned int *);
typedef int (*PARPORT_WRITE_IVAR_T)(device_t, int, unsigned int *);
typedef int (*PARPORT_DMA_MALLOC_T)(device_t, void **, bus_addr_t *,
       bus_size_t);
typedef void (*PARPORT_DMA_FREE_T)(device_t, void **, bus_addr_t *,
       bus_size_t);
typedef int (*PARPORT_ADD_HANDLER_T)(device_t, void (*)(void *),
       void *);
typedef int (*PARPORT_REMOVE_HANDLER_T)(device_t, void (*)(void *));

/* Adapter structure that each parport device needs to implement ppbus */
struct parport_adapter {
       u_int16_t capabilities;

       /* Functions which make up interface */
       PARPORT_IO_T parport_io;
       PARPORT_EXEC_MICROSEQ_T parport_exec_microseq;
       PARPORT_RESET_EPP_TIMEOUT_T parport_reset_epp_timeout;
       PARPORT_SETMODE_T parport_setmode;
       PARPORT_GETMODE_T parport_getmode;
       PARPORT_ECP_SYNC_T parport_ecp_sync;
       PARPORT_READ_T parport_read;
       PARPORT_WRITE_T parport_write;
       PARPORT_READ_IVAR_T parport_read_ivar;
       PARPORT_WRITE_IVAR_T parport_write_ivar;
       PARPORT_DMA_MALLOC_T parport_dma_malloc;
       PARPORT_DMA_FREE_T parport_dma_free;
       PARPORT_ADD_HANDLER_T parport_add_handler;
       PARPORT_REMOVE_HANDLER_T parport_remove_handler;
};

/* Parallel Port Bus configuration structure. */
struct ppbus_softc {
       device_t sc_dev;

       /* Lock for critical section when requesting/releasing the bus */
       kmutex_t sc_lock;

#define PPBUS_OK 1
#define PPBUS_NOK 0
       u_int8_t sc_dev_ok;

       /* ppbus capabilities (see ppbus_var.h) */
       u_int16_t sc_capabilities;

/* PnP device type defined in ppbus_var.h */
       int sc_class_id;                /* not a PnP device if class_id < 0 */

       /* Defined in pbus_1284.h: error and host side state. */
       u_int32_t sc_1284_state;        /* current IEEE1284 state */
       u_int32_t sc_1284_error;        /* last IEEE1284 error */

       /* Use IEEE 1284 negotiations in mode changes and direction changes */
       u_int32_t sc_use_ieee;

/* PPBUS mode masks defined in ppbus_var.h. */
       u_int32_t sc_mode;              /* IEEE 1284-1994 mode */

       /* ppbus_device which owns the bus */
       device_t ppbus_owner;

       /* Head of list of child devices */
       SLIST_HEAD(childlist, ppbus_device_softc) sc_childlist_head;

       /* Functions which make up interface */
       PARPORT_IO_T ppbus_io;
       PARPORT_EXEC_MICROSEQ_T ppbus_exec_microseq;
       PARPORT_RESET_EPP_TIMEOUT_T ppbus_reset_epp_timeout;
       PARPORT_SETMODE_T ppbus_setmode;
       PARPORT_GETMODE_T ppbus_getmode;
       PARPORT_ECP_SYNC_T ppbus_ecp_sync;
       PARPORT_READ_T ppbus_read;
       PARPORT_WRITE_T ppbus_write;
       PARPORT_READ_IVAR_T ppbus_read_ivar;
       PARPORT_WRITE_IVAR_T ppbus_write_ivar;
       PARPORT_DMA_MALLOC_T ppbus_dma_malloc;
       PARPORT_DMA_FREE_T ppbus_dma_free;
       PARPORT_ADD_HANDLER_T ppbus_add_handler;
       PARPORT_REMOVE_HANDLER_T ppbus_remove_handler;

#if NGPIO > 0
       struct gpio_chipset_tag sc_gpio_gc;
       gpio_pin_t sc_gpio_pins[PPBUS_NPINS];
#endif
};

#if NGPIO > 0
void gpio_ppbus_attach(struct ppbus_softc *);
#endif

#endif /* __PPBUS_CONF_H */

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