1 /* $NetBSD: stvar.h,v 1.6 2002/07/22 14:59:45 hannken 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 Charles M. Hannum. 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 /* 40 * Originally written by Julian Elischer (julian@tfs.com) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 54 * major changes by Julian Elischer (julian@jules.dialix.oz.au) May 1993 55 * 56 * A lot of rewhacking done by mjacob (mjacob@nas.nasa.gov). 57 */ 58 59 #include "rnd.h" 60 #if NRND > 0 61 #include <sys/rnd.h> 62 #endif 63 64 #include <dev/scsipi/scsipi_all.h> 65 #include <dev/scsipi/scsiconf.h> 66 67 #define ST_IO_TIME (3 * 60 * 1000) /* 3 minutes */ 68 #define ST_CTL_TIME (30 * 1000) /* 30 seconds */ 69 #define ST_SPC_TIME (4 * 60 * 60 * 1000) /* 4 hours */ 70 71 #define ST_RETRIES 4 /* only on non IO commands */ 72 73 struct modes { 74 u_int quirks; /* same definitions as in quirkdata */ 75 int blksize; 76 u_int8_t density; 77 }; 78 79 struct quirkdata { 80 u_int quirks; 81 #define ST_Q_FORCE_BLKSIZE 0x0001 82 #define ST_Q_SENSE_HELP 0x0002 /* must do READ for good MODE SENSE */ 83 #define ST_Q_IGNORE_LOADS 0x0004 84 #define ST_Q_BLKSIZE 0x0008 /* variable-block media_blksize > 0 */ 85 #define ST_Q_UNIMODAL 0x0010 /* unimode drive rejects mode select */ 86 #define ST_Q_NOPREVENT 0x0020 /* does not support PREVENT */ 87 #define ST_Q_ERASE_NOIMM 0x0040 /* drive rejects ERASE/w Immed bit */ 88 #define ST_Q_NOFILEMARKS 0x0080 /* can only write 0 filemarks */ 89 u_int page_0_size; 90 #define MAX_PAGE_0_SIZE 64 91 struct modes modes[4]; 92 }; 93 94 struct st_quirk_inquiry_pattern { 95 struct scsipi_inquiry_pattern pattern; 96 struct quirkdata quirkdata; 97 }; 98 99 struct st_softc { 100 struct device sc_dev; 101 /*--------------------callback to bus-specific code--------------------------*/ 102 int (*ops) __P((struct st_softc *, int, int)); 103 #define ST_OPS_RBL 0x00 /* read block limit */ 104 #define ST_OPS_MODESENSE 0x01 /* mode sense */ 105 #define ST_OPS_MODESELECT 0x02 /* mode select */ 106 #define ST_OPS_CMPRSS_ON 0x03 /* turn on compression */ 107 #define ST_OPS_CMPRSS_OFF 0x04 /* turn off compression */ 108 /*--------------------present operating parameters, flags etc.---------------*/ 109 int flags; /* see below */ 110 u_int quirks; /* quirks for the open mode */ 111 int blksize; /* blksize we are using */ 112 u_int8_t density; /* present density */ 113 u_int page_0_size; /* size of page 0 data */ 114 u_int last_dsty; /* last density opened */ 115 short mt_resid; /* last (short) resid */ 116 short mt_erreg; /* last error (sense key) seen */ 117 /* relative to BOT location */ 118 daddr_t fileno; 119 daddr_t blkno; 120 int32_t last_io_resid; 121 int32_t last_ctl_resid; 122 #define mt_key mt_erreg 123 u_int8_t asc; /* last asc code seen */ 124 u_int8_t ascq; /* last asc code seen */ 125 /*--------------------device/scsi parameters---------------------------------*/ 126 struct scsipi_periph *sc_periph;/* our link to the adpter etc. */ 127 /*--------------------parameters reported by the device ---------------------*/ 128 int blkmin; /* min blk size */ 129 int blkmax; /* max blk size */ 130 struct quirkdata *quirkdata; /* if we have a rogue entry */ 131 /*--------------------parameters reported by the device for this media-------*/ 132 u_long numblks; /* nominal blocks capacity */ 133 int media_blksize; /* 0 if not ST_FIXEDBLOCKS */ 134 u_int8_t media_density; /* this is what it said when asked */ 135 /*--------------------quirks for the whole drive-----------------------------*/ 136 u_int drive_quirks; /* quirks of this drive */ 137 /*--------------------How we should set up when opening each minor device----*/ 138 struct modes modes[4]; /* plus more for each mode */ 139 u_int8_t modeflags[4]; /* flags for the modes */ 140 #define DENSITY_SET_BY_USER 0x01 141 #define DENSITY_SET_BY_QUIRK 0x02 142 #define BLKSIZE_SET_BY_USER 0x04 143 #define BLKSIZE_SET_BY_QUIRK 0x08 144 /*--------------------storage for sense data returned by the drive-----------*/ 145 u_char sense_data[MAX_PAGE_0_SIZE]; /* 146 * additional sense data needed 147 * for mode sense/select. 148 */ 149 struct bufq_state buf_queue; /* the queue of pending IO */ 150 /* operations */ 151 #if NRND > 0 152 rndsource_element_t rnd_source; 153 #endif 154 }; 155 156 #define ST_INFO_VALID 0x0001 157 #define ST_BLOCK_SET 0x0002 /* block size, mode set by ioctl */ 158 #define ST_WRITTEN 0x0004 /* data has been written, EOD needed */ 159 #define ST_FIXEDBLOCKS 0x0008 160 #define ST_AT_FILEMARK 0x0010 161 #define ST_EIO_PENDING 0x0020 /* error reporting deferred until next op */ 162 #define ST_NEW_MOUNT 0x0040 /* still need to decide mode */ 163 #define ST_READONLY 0x0080 /* st_mode_sense says write protected */ 164 #define ST_FM_WRITTEN 0x0100 /* 165 * EOF file mark written -- used with 166 * ~ST_WRITTEN to indicate that multiple file 167 * marks have been written 168 */ 169 #define ST_BLANK_READ 0x0200 /* BLANK CHECK encountered already */ 170 #define ST_2FM_AT_EOD 0x0400 /* write 2 file marks at EOD */ 171 #define ST_MOUNTED 0x0800 /* Device is presently mounted */ 172 #define ST_DONTBUFFER 0x1000 /* Disable buffering/caching */ 173 #define ST_EARLYWARN 0x2000 /* Do (deferred) EOM for variable mode */ 174 #define ST_EOM_PENDING 0x4000 /* EOM reporting deferred until next op */ 175 #define ST_POSUPDATED 0x8000 /* tape position already updated */ 176 177 #define ST_PER_ACTION (ST_AT_FILEMARK | ST_EIO_PENDING | ST_EOM_PENDING | \ 178 ST_BLANK_READ) 179 #define ST_PER_MOUNT (ST_INFO_VALID | ST_BLOCK_SET | ST_WRITTEN | \ 180 ST_FIXEDBLOCKS | ST_READONLY | ST_FM_WRITTEN | \ 181 ST_2FM_AT_EOD | ST_PER_ACTION | ST_POSUPDATED) 182 183 void stattach __P((struct device *, struct st_softc *, void *)); 184 int stactivate __P((struct device *, enum devact)); 185 int stdetach __P((struct device *, int)); 186 187 extern struct cfdriver st_cd; 188