1/*	$OpenBSD: fdvar.h,v 1.3 2008/06/26 05:42:13 ray Exp $	*/
2/*	$NetBSD: fdvar.h,v 1.12 2003/07/11 12:09:13 pk Exp $	*/
3
4/*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Paul Kranenburg.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#define	FD_BSIZE(fd)	(128 << fd->sc_type->secsize)
34#define	FDC_MAXIOSIZE	NBPG	/* XXX should be MAXBSIZE */
35
36#define FDC_NSTATUS	10
37
38struct fdcio {
39	bus_space_handle_t	fdcio_handle;
40
41	/*
42	 * Interrupt state.
43	 */
44	int	fdcio_itask;
45	int	fdcio_istatus;
46
47	/*
48	 * IO state.
49	 */
50	char	*fdcio_data;		/* pseudo-DMA data */
51	int	fdcio_tc;		/* pseudo-DMA Terminal Count */
52	u_char	fdcio_status[FDC_NSTATUS];	/* copy of registers */
53	int	fdcio_nstat;		/* # of valid status bytes */
54};
55
56/* itask values */
57#define FDC_ITASK_NONE		0	/* No HW interrupt expected */
58#define FDC_ITASK_SENSEI	1	/* Do SENSEI on next HW interrupt */
59#define FDC_ITASK_DMA		2	/* Do Pseudo-DMA */
60#define FDC_ITASK_RESULT	3	/* Pick up command results */
61
62/* istatus values */
63#define FDC_ISTATUS_NONE	0	/* No status available */
64#define FDC_ISTATUS_SPURIOUS	1	/* Spurious HW interrupt detected */
65#define FDC_ISTATUS_ERROR	2	/* Operation completed abnormally */
66#define FDC_ISTATUS_DONE	3	/* Operation completed normally */
67