1 /* $NetBSD: fdvar.h,v 1.14 2008/04/28 20:23:35 martin 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 FD_BSIZE(fd) (128 * (1 << fd->sc_type->secsize)) 33 #define FDC_MAXIOSIZE NBPG /* XXX should be MAXBSIZE */ 34 35 #define FDC_NSTATUS 10 36 37 #ifndef _LOCORE 38 struct fdcio { 39 bus_space_handle_t fdcio_handle; 40 /* 41 * 82072 (sun4c) and 82077 (sun4m) controllers have different 42 * register layout; so we cache offsets to the registers here. 43 */ 44 u_int fdcio_reg_msr; 45 u_int fdcio_reg_fifo; 46 u_int fdcio_reg_dor; /* 82077 only */ 47 u_int fdcio_reg_dir; /* 82077 only */ 48 49 /* 50 * Interrupt state. 51 */ 52 int fdcio_itask; 53 int fdcio_istatus; 54 55 /* 56 * IO state. 57 */ 58 char *fdcio_data; /* pseudo-DMA data */ 59 int fdcio_tc; /* pseudo-DMA Terminal Count */ 60 u_char fdcio_status[FDC_NSTATUS]; /* copy of registers */ 61 int fdcio_nstat; /* # of valid status bytes */ 62 63 /* 64 * Statictics. 65 */ 66 struct evcnt fdcio_intrcnt; 67 }; 68 #endif /* _LOCORE */ 69 70 /* itask values */ 71 #define FDC_ITASK_NONE 0 /* No HW interrupt expected */ 72 #define FDC_ITASK_SENSEI 1 /* Do SENSEI on next HW interrupt */ 73 #define FDC_ITASK_DMA 2 /* Do Pseudo-DMA */ 74 #define FDC_ITASK_RESULT 3 /* Pick up command results */ 75 76 /* istatus values */ 77 #define FDC_ISTATUS_NONE 0 /* No status available */ 78 #define FDC_ISTATUS_SPURIOUS 1 /* Spurious HW interrupt detected */ 79 #define FDC_ISTATUS_ERROR 2 /* Operation completed abnormally */ 80 #define FDC_ISTATUS_DONE 3 /* Operation completed normally */ 81 82 83 #define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 84 /* 2.88 MB drives */ 85 86 #ifndef _LOCORE 87 struct ne7_fd_formb { 88 int cyl, head; 89 int transfer_rate; /* fdreg.h: FDC_???KBPS */ 90 91 union { 92 struct fd_form_data { 93 /* 94 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 95 * it is hardware-dependant since it exactly 96 * matches the byte sequence to write to FDC 97 * during its `format track' operation 98 */ 99 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 100 u_char nsecs; /* must be <= FD_MAX_NSEC */ 101 u_char gaplen; /* GAP 3 length; usually 84 */ 102 u_char fillbyte; /* usually 0xf6 */ 103 struct fd_idfield_data { 104 /* 105 * data to write into id fields; 106 * for obscure formats, they mustn't match 107 * the real values (but mostly do) 108 */ 109 u_char cylno; /* 0 thru 79 (or 39) */ 110 u_char headno; /* 0, or 1 */ 111 u_char secno; /* starting at 1! */ 112 u_char secsize; /* usually 2 */ 113 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 114 } structured; 115 u_char raw[1]; /* to have continuous indexed access */ 116 } format_info; 117 }; 118 119 /* make life easier */ 120 #define fd_formb_secshift format_info.structured.secshift 121 #define fd_formb_nsecs format_info.structured.nsecs 122 #define fd_formb_gaplen format_info.structured.gaplen 123 #define fd_formb_fillbyte format_info.structured.fillbyte 124 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 125 #define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 126 #define fd_formb_headno(i) format_info.structured.idfields[i].headno 127 #define fd_formb_secno(i) format_info.structured.idfields[i].secno 128 #define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 129 #endif /* _LOCORE */ 130