fdvar.h revision 1.5
1 1.2 pk /* 2 1.5 pk * $NetBSD: fdvar.h,v 1.5 1996/12/08 23:40:34 pk Exp $ 3 1.2 pk * 4 1.2 pk * Copyright (c) 1995 Paul Kranenburg 5 1.2 pk * All rights reserved. 6 1.2 pk * 7 1.2 pk * Redistribution and use in source and binary forms, with or without 8 1.2 pk * modification, are permitted provided that the following conditions 9 1.2 pk * are met: 10 1.2 pk * 1. Redistributions of source code must retain the above copyright 11 1.2 pk * notice, this list of conditions and the following disclaimer. 12 1.2 pk * 2. Redistributions in binary form must reproduce the above copyright 13 1.2 pk * notice, this list of conditions and the following disclaimer in the 14 1.2 pk * documentation and/or other materials provided with the distribution. 15 1.2 pk * 3. All advertising materials mentioning features or use of this software 16 1.2 pk * must display the following acknowledgement: 17 1.2 pk * This product includes software developed by Paul Kranenburg. 18 1.2 pk * 4. The name of the author may not be used to endorse or promote products 19 1.2 pk * derived from this software without specific prior written permission 20 1.2 pk * 21 1.2 pk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.2 pk * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.2 pk * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.2 pk * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.2 pk * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.2 pk * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.2 pk * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.2 pk * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.2 pk * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.2 pk * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.2 pk * 32 1.2 pk */ 33 1.2 pk 34 1.1 pk #define FDC_BSIZE 512 35 1.1 pk #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 36 1.1 pk 37 1.1 pk #define FDC_NSTATUS 10 38 1.1 pk 39 1.4 mycroft #ifndef _LOCORE 40 1.1 pk struct fdcio { 41 1.1 pk /* 42 1.1 pk * 82072 (sun4c) and 82077 (sun4m) controllers have different 43 1.1 pk * register layout; so we cache some here. 44 1.1 pk */ 45 1.1 pk volatile u_int8_t *fdcio_reg_msr; 46 1.1 pk volatile u_int8_t *fdcio_reg_fifo; 47 1.1 pk volatile u_int8_t *fdcio_reg_dor; /* 82077 only */ 48 1.1 pk 49 1.1 pk /* 50 1.1 pk * Interrupt state. 51 1.1 pk */ 52 1.1 pk int fdcio_istate; 53 1.1 pk 54 1.1 pk /* 55 1.1 pk * IO state. 56 1.1 pk */ 57 1.1 pk char *fdcio_data; /* pseudo-dma data */ 58 1.1 pk int fdcio_tc; /* pseudo-dma Terminal Count */ 59 1.1 pk u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */ 60 1.1 pk int fdcio_nstat; /* # of valid status bytes */ 61 1.3 pk 62 1.3 pk /* 63 1.3 pk * Statictics. 64 1.3 pk */ 65 1.3 pk struct evcnt fdcio_intrcnt; 66 1.1 pk }; 67 1.4 mycroft #endif /* _LOCORE */ 68 1.1 pk 69 1.1 pk /* istate values */ 70 1.1 pk #define ISTATE_IDLE 0 /* No HW interrupt expected */ 71 1.1 pk #define ISTATE_SPURIOUS 1 /* Spurious HW interrupt detected */ 72 1.1 pk #define ISTATE_SENSEI 2 /* Do SENSEI on next HW interrupt */ 73 1.1 pk #define ISTATE_DMA 3 /* Pseudo-DMA in progress */ 74 1.5 pk #define ISTATE_DONE 4 /* Interrupt processing complete */ 75 1.1 pk 76 1.1 pk 77 1.5 pk #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 78 1.5 pk /* 2.88 MB drives */ 79 1.5 pk 80 1.5 pk #ifndef _LOCORE 81 1.5 pk struct ne7_fd_formb { 82 1.5 pk int cyl, head; 83 1.5 pk int transfer_rate; /* fdreg.h: FDC_???KBPS */ 84 1.5 pk 85 1.5 pk union { 86 1.5 pk struct fd_form_data { 87 1.5 pk /* 88 1.5 pk * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 89 1.5 pk * it is hardware-dependant since it exactly 90 1.5 pk * matches the byte sequence to write to FDC 91 1.5 pk * during its `format track' operation 92 1.5 pk */ 93 1.5 pk u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 94 1.5 pk u_char nsecs; /* must be <= FD_MAX_NSEC */ 95 1.5 pk u_char gaplen; /* GAP 3 length; usually 84 */ 96 1.5 pk u_char fillbyte; /* usually 0xf6 */ 97 1.5 pk struct fd_idfield_data { 98 1.5 pk /* 99 1.5 pk * data to write into id fields; 100 1.5 pk * for obscure formats, they mustn't match 101 1.5 pk * the real values (but mostly do) 102 1.5 pk */ 103 1.5 pk u_char cylno; /* 0 thru 79 (or 39) */ 104 1.5 pk u_char headno; /* 0, or 1 */ 105 1.5 pk u_char secno; /* starting at 1! */ 106 1.5 pk u_char secsize; /* usually 2 */ 107 1.5 pk } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 108 1.5 pk } structured; 109 1.5 pk u_char raw[1]; /* to have continuous indexed access */ 110 1.5 pk } format_info; 111 1.5 pk }; 112 1.5 pk 113 1.5 pk /* make life easier */ 114 1.5 pk #define fd_formb_secshift format_info.structured.secshift 115 1.5 pk #define fd_formb_nsecs format_info.structured.nsecs 116 1.5 pk #define fd_formb_gaplen format_info.structured.gaplen 117 1.5 pk #define fd_formb_fillbyte format_info.structured.fillbyte 118 1.5 pk /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 119 1.5 pk #define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 120 1.5 pk #define fd_formb_headno(i) format_info.structured.idfields[i].headno 121 1.5 pk #define fd_formb_secno(i) format_info.structured.idfields[i].secno 122 1.5 pk #define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 123 1.5 pk #endif /* _LOCORE */ 124
Indexes created Tue Sep 23 07:09:52 GMT 2025