fdvar.h revision 1.12
1 /* $NetBSD: fdvar.h,v 1.12 2003/07/11 12:09:13 pk 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #define FD_BSIZE(fd) (128 * (1 << fd->sc_type->secsize)) 40 #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 41 42 #define FDC_NSTATUS 10 43 44 #ifndef _LOCORE 45 struct fdcio { 46 bus_space_handle_t fdcio_handle; 47 /* 48 * 82072 (sun4c) and 82077 (sun4m) controllers have different 49 * register layout; so we cache offsets to the registers here. 50 */ 51 u_int fdcio_reg_msr; 52 u_int fdcio_reg_fifo; 53 u_int fdcio_reg_dor; /* 82077 only */ 54 u_int fdcio_reg_dir; /* 82077 only */ 55 56 /* 57 * Interrupt state. 58 */ 59 int fdcio_itask; 60 int fdcio_istatus; 61 62 /* 63 * IO state. 64 */ 65 char *fdcio_data; /* pseudo-DMA data */ 66 int fdcio_tc; /* pseudo-DMA Terminal Count */ 67 u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */ 68 int fdcio_nstat; /* # of valid status bytes */ 69 70 /* 71 * Statictics. 72 */ 73 struct evcnt fdcio_intrcnt; 74 }; 75 #endif /* _LOCORE */ 76 77 /* itask values */ 78 #define FDC_ITASK_NONE 0 /* No HW interrupt expected */ 79 #define FDC_ITASK_SENSEI 1 /* Do SENSEI on next HW interrupt */ 80 #define FDC_ITASK_DMA 2 /* Do Pseudo-DMA */ 81 #define FDC_ITASK_RESULT 3 /* Pick up command results */ 82 83 /* istatus values */ 84 #define FDC_ISTATUS_NONE 0 /* No status available */ 85 #define FDC_ISTATUS_SPURIOUS 1 /* Spurious HW interrupt detected */ 86 #define FDC_ISTATUS_ERROR 2 /* Operation completed abnormally */ 87 #define FDC_ISTATUS_DONE 3 /* Operation completed normally */ 88 89 90 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 91 /* 2.88 MB drives */ 92 93 #ifndef _LOCORE 94 struct ne7_fd_formb { 95 int cyl, head; 96 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 97 98 union { 99 struct fd_form_data { 100 /* 101 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 102 * it is hardware-dependant since it exactly 103 * matches the byte sequence to write to FDC 104 * during its `format track' operation 105 */ 106 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 107 u_char nsecs; /* must be <= FD_MAX_NSEC */ 108 u_char gaplen; /* GAP 3 length; usually 84 */ 109 u_char fillbyte; /* usually 0xf6 */ 110 struct fd_idfield_data { 111 /* 112 * data to write into id fields; 113 * for obscure formats, they mustn't match 114 * the real values (but mostly do) 115 */ 116 u_char cylno; /* 0 thru 79 (or 39) */ 117 u_char headno; /* 0, or 1 */ 118 u_char secno; /* starting at 1! */ 119 u_char secsize; /* usually 2 */ 120 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 121 } structured; 122 u_char raw[1]; /* to have continuous indexed access */ 123 } format_info; 124 }; 125 126 /* make life easier */ 127 #define fd_formb_secshift format_info.structured.secshift 128 #define fd_formb_nsecs format_info.structured.nsecs 129 #define fd_formb_gaplen format_info.structured.gaplen 130 #define fd_formb_fillbyte format_info.structured.fillbyte 131 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 132 #define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 133 #define fd_formb_headno(i) format_info.structured.idfields[i].headno 134 #define fd_formb_secno(i) format_info.structured.idfields[i].secno 135 #define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 136 #endif /* _LOCORE */ 137
Indexes created Thu Sep 25 16:09:42 GMT 2025