/* $NetBSD: stvar.h,v 1.26 2018/03/24 08:08:19 mlelstv Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Originally written by Julian Elischer (julian@tfs.com) * for TRW Financial Systems for use under the MACH(2.5) operating system. * * TRW Financial Systems, in accordance with their agreement with Carnegie * Mellon University, makes this software available to CMU to distribute * or use in any manner that they see fit as long as this message is kept with * the software. For this reason TFS also grants any other persons or * organisations permission to use or modify this software. * * TFS supplies this software to be publicly redistributed * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 * major changes by Julian Elischer (julian@jules.dialix.oz.au) May 1993 * * A lot of rewhacking done by mjacob (mjacob@nas.nasa.gov). */ #include <sys/rndsource.h> #include <dev/scsipi/scsipi_all.h> #include <dev/scsipi/scsiconf.h> #define ST_IO_TIME (3 * 60 * 1000) /* 3 minutes */ #define ST_CTL_TIME (30 * 1000) /* 30 seconds */ #define ST_SPC_TIME (4 * 60 * 60 * 1000) /* 4 hours */ #define ST_RETRIES 4 /* only on non IO commands */ struct modes { u_int quirks; /* same definitions as in quirkdata */ int blksize; uint8_t density; }; struct quirkdata { u_int quirks; #define ST_Q_FORCE_BLKSIZE 0x0001 #define ST_Q_SENSE_HELP 0x0002 /* must do READ for good MODE SENSE */ #define ST_Q_IGNORE_LOADS 0x0004 #define ST_Q_BLKSIZE 0x0008 /* variable-block media_blksize > 0 */ #define ST_Q_UNIMODAL 0x0010 /* unimode drive rejects mode select */ #define ST_Q_NOPREVENT 0x0020 /* does not support PREVENT */ #define ST_Q_ERASE_NOIMM 0x0040 /* drive rejects ERASE/w Immed bit */ #define ST_Q_NOFILEMARKS 0x0080 /* can only write 0 filemarks */ u_int page_0_size; #define MAX_PAGE_0_SIZE 64 struct modes modes[4]; }; struct st_quirk_inquiry_pattern { struct scsipi_inquiry_pattern pattern; struct quirkdata quirkdata; }; struct st_softc { device_t sc_dev; /*--------------------callback to bus-specific code--------------------------*/ int (*ops)(struct st_softc *, int, int); #define ST_OPS_RBL 0x00 /* read block limit */ #define ST_OPS_MODESENSE 0x01 /* mode sense */ #define ST_OPS_MODESELECT 0x02 /* mode select */ #define ST_OPS_CMPRSS_ON 0x03 /* turn on compression */ #define ST_OPS_CMPRSS_OFF 0x04 /* turn off compression */ /*--------------------present operating parameters, flags etc.---------------*/ int flags; /* see below */ u_int quirks; /* quirks for the open mode */ int blksize; /* blksize we are using */ uint8_t density; /* present density */ u_int page_0_size; /* size of page 0 data */ u_int last_dsty; /* last density opened */ short mt_resid; /* last (short) resid */ short mt_erreg; /* last error (sense key) seen */ /* relative to BOT location */ daddr_t fileno; daddr_t blkno; int32_t last_io_resid; int32_t last_ctl_resid; #define mt_key mt_erreg uint8_t asc; /* last asc code seen */ uint8_t ascq; /* last asc code seen */ /*--------------------device/scsi parameters---------------------------------*/ struct scsipi_periph *sc_periph;/* our link to the adpter etc. */ /*--------------------parameters reported by the device ---------------------*/ int blkmin; /* min blk size */ int blkmax; /* max blk size */ const struct quirkdata *quirkdata; /* if we have a rogue entry */ /*--------------------parameters reported by the device for this media-------*/ u_long numblks; /* nominal blocks capacity */ int media_blksize; /* 0 if not ST_FIXEDBLOCKS */ uint8_t media_density; /* this is what it said when asked */ /*--------------------quirks for the whole drive-----------------------------*/ u_int drive_quirks; /* quirks of this drive */ /*--------------------How we should set up when opening each minor device----*/ struct modes modes[4]; /* plus more for each mode */ uint8_t modeflags[4]; /* flags for the modes */ #define DENSITY_SET_BY_USER 0x01 #define DENSITY_SET_BY_QUIRK 0x02 #define BLKSIZE_SET_BY_USER 0x04 #define BLKSIZE_SET_BY_QUIRK 0x08 /*--------------------storage for sense data returned by the drive-----------*/ u_char sense_data[MAX_PAGE_0_SIZE]; /* * additional sense data needed * for mode sense/select. */ struct bufq_state *buf_queue; /* the queue of pending IO */ /* operations */ struct bufq_state *buf_defer; /* the queue of deferred IO */ /* operations */ struct callout sc_callout; /* restarting the queue after */ /* transient error */ struct io_stats *stats; /* statistics for the drive */ krndsource_t rnd_source; kmutex_t sc_iolock; }; #define ST_INFO_VALID 0x0001 #define ST_BLOCK_SET 0x0002 /* block size, mode set by ioctl */ #define ST_WRITTEN 0x0004 /* data has been written, EOD needed */ #define ST_FIXEDBLOCKS 0x0008 #define ST_AT_FILEMARK 0x0010 #define ST_EIO_PENDING 0x0020 /* error reporting deferred until next op */ #define ST_NEW_MOUNT 0x0040 /* still need to decide mode */ #define ST_READONLY 0x0080 /* st_mode_sense says write protected */ #define ST_FM_WRITTEN 0x0100 /* * EOF file mark written -- used with * ~ST_WRITTEN to indicate that multiple file * marks have been written */ #define ST_BLANK_READ 0x0200 /* BLANK CHECK encountered already */ #define ST_2FM_AT_EOD 0x0400 /* write 2 file marks at EOD */ #define ST_MOUNTED 0x0800 /* Device is presently mounted */ #define ST_DONTBUFFER 0x1000 /* Disable buffering/caching */ #define ST_EARLYWARN 0x2000 /* Do (deferred) EOM for variable mode */ #define ST_EOM_PENDING 0x4000 /* EOM reporting deferred until next op */ #define ST_POSUPDATED 0x8000 /* tape position already updated */ #define ST_PER_ACTION (ST_AT_FILEMARK | ST_EIO_PENDING | ST_EOM_PENDING | \ ST_BLANK_READ) #define ST_PER_MOUNT (ST_INFO_VALID | ST_BLOCK_SET | ST_WRITTEN | \ ST_FIXEDBLOCKS | ST_READONLY | ST_FM_WRITTEN | \ ST_2FM_AT_EOD | ST_PER_ACTION | ST_POSUPDATED) void stattach(device_t, device_t, void *); int stdetach(device_t, int); int st_mode_select(struct st_softc *, int); extern struct cfdriver st_cd;
