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 38 struct 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