1 /* $NetBSD: fdvar.h,v 1.7 2011/06/30 20:09:37 wiz Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #define FDC_BSIZE 512 33 #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 34 35 #define FDC_NSTATUS 10 36 37 #ifndef _LOCORE 38 struct fdcio { 39 /* 40 * 82072 (sun4c,sun3x) and 82077 (sun4m) controllers have different 41 * register layout; so we cache some here. 42 */ 43 volatile uint8_t *fdcio_reg_msr; 44 volatile uint8_t *fdcio_reg_fifo; 45 volatile uint8_t *fdcio_reg_dor; /* 82077 only */ 46 volatile uint8_t *fdcio_reg_fcr; /* sun3x floppy control reg */ 47 volatile uint8_t *fdcio_reg_fvr; /* sun3x floppy int. vector */ 48 49 /* 50 * Interrupt state. 51 */ 52 int fdcio_istate; 53 54 /* 55 * IO state. 56 */ 57 char *fdcio_data; /* pseudo-DMA data */ 58 int fdcio_tc; /* pseudo-DMA Terminal Count */ 59 u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */ 60 int fdcio_nstat; /* # of valid status bytes */ 61 62 /* 63 * Statictics. 64 */ 65 struct evcnt fdcio_intrcnt; 66 }; 67 #endif /* _LOCORE */ 68 69 /* istate values */ 70 #define ISTATE_IDLE 0 /* No HW interrupt expected */ 71 #define ISTATE_SPURIOUS 1 /* Spurious HW interrupt detected */ 72 #define ISTATE_SENSEI 2 /* Do SENSEI on next HW interrupt */ 73 #define ISTATE_DMA 3 /* Pseudo-DMA in progress */ 74 #define ISTATE_DONE 4 /* Interrupt processing complete */ 75 76 77 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 78 /* 2.88 MB drives */ 79 80 #ifndef _LOCORE 81 struct ne7_fd_formb { 82 int cyl, head; 83 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 84 85 union { 86 struct fd_form_data { 87 /* 88 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 89 * it is hardware-dependent since it exactly 90 * matches the byte sequence to write to FDC 91 * during its `format track' operation 92 */ 93 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 94 u_char nsecs; /* must be <= FD_MAX_NSEC */ 95 u_char gaplen; /* GAP 3 length; usually 84 */ 96 u_char fillbyte; /* usually 0xf6 */ 97 struct fd_idfield_data { 98 /* 99 * data to write into id fields; 100 * for obscure formats, they mustn't match 101 * the real values (but mostly do) 102 */ 103 u_char cylno; /* 0 thru 79 (or 39) */ 104 u_char headno; /* 0, or 1 */ 105 u_char secno; /* starting at 1! */ 106 u_char secsize; /* usually 2 */ 107 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 108 } structured; 109 u_char raw[1]; /* to have continuous indexed access */ 110 } format_info; 111 }; 112 113 /* make life easier */ 114 #define fd_formb_secshift format_info.structured.secshift 115 #define fd_formb_nsecs format_info.structured.nsecs 116 #define fd_formb_gaplen format_info.structured.gaplen 117 #define fd_formb_fillbyte format_info.structured.fillbyte 118 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 119 #define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 120 #define fd_formb_headno(i) format_info.structured.idfields[i].headno 121 #define fd_formb_secno(i) format_info.structured.idfields[i].secno 122 #define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 123 #endif /* _LOCORE */ 124