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Diffstat (limited to 'drivers/scsi/osst_options.h')
| -rw-r--r-- | drivers/scsi/osst_options.h | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/drivers/scsi/osst_options.h b/drivers/scsi/osst_options.h deleted file mode 100644 index a6a389b88876..000000000000 --- a/drivers/scsi/osst_options.h +++ /dev/null @@ -1,107 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - The compile-time configurable defaults for the Linux SCSI tape driver. - - Copyright 1995 Kai Makisara. - - Last modified: Wed Sep 2 21:24:07 1998 by root@home - - Changed (and renamed) for OnStream SCSI drives garloff@suse.de - 2000-06-21 - - $Header: /cvsroot/osst/Driver/osst_options.h,v 1.6 2003/12/23 14:22:12 wriede Exp $ -*/ - -#ifndef _OSST_OPTIONS_H -#define _OSST_OPTIONS_H - -/* The minimum limit for the number of SCSI tape devices is determined by - OSST_MAX_TAPES. If the number of tape devices and the "slack" defined by - OSST_EXTRA_DEVS exceeds OSST_MAX_TAPES, the large number is used. */ -#define OSST_MAX_TAPES 4 - -/* If OSST_IN_FILE_POS is nonzero, the driver positions the tape after the - record been read by the user program even if the tape has moved further - because of buffered reads. Should be set to zero to support also drives - that can't space backwards over records. NOTE: The tape will be - spaced backwards over an "accidentally" crossed filemark in any case. */ -#define OSST_IN_FILE_POS 1 - -/* The tape driver buffer size in kilobytes. */ -/* Don't change, as this is the HW blocksize */ -#define OSST_BUFFER_BLOCKS 32 - -/* The number of kilobytes of data in the buffer that triggers an - asynchronous write in fixed block mode. See also OSST_ASYNC_WRITES - below. */ -#define OSST_WRITE_THRESHOLD_BLOCKS 32 - -/* OSST_EOM_RESERVE defines the number of frames are kept in reserve for - * * write error recovery when writing near end of medium. ENOSPC is returned - * * when write() is called and the tape write position is within this number - * * of blocks from the tape capacity. */ -#define OSST_EOM_RESERVE 300 - -/* The maximum number of tape buffers the driver allocates. The number - is also constrained by the number of drives detected. Determines the - maximum number of concurrently active tape drives. */ -#define OSST_MAX_BUFFERS OSST_MAX_TAPES - -/* Maximum number of scatter/gather segments */ -/* Fit one buffer in pages and add one for the AUX header */ -#define OSST_MAX_SG (((OSST_BUFFER_BLOCKS*1024) / PAGE_SIZE) + 1) - -/* The number of scatter/gather segments to allocate at first try (must be - smaller or equal to the maximum). */ -#define OSST_FIRST_SG ((OSST_BUFFER_BLOCKS*1024) / PAGE_SIZE) - -/* The size of the first scatter/gather segments (determines the maximum block - size for SCSI adapters not supporting scatter/gather). The default is set - to try to allocate the buffer as one chunk. */ -#define OSST_FIRST_ORDER (15-PAGE_SHIFT) - - -/* The following lines define defaults for properties that can be set - separately for each drive using the MTSTOPTIONS ioctl. */ - -/* If OSST_TWO_FM is non-zero, the driver writes two filemarks after a - file being written. Some drives can't handle two filemarks at the - end of data. */ -#define OSST_TWO_FM 0 - -/* If OSST_BUFFER_WRITES is non-zero, writes in fixed block mode are - buffered until the driver buffer is full or asynchronous write is - triggered. */ -#define OSST_BUFFER_WRITES 1 - -/* If OSST_ASYNC_WRITES is non-zero, the SCSI write command may be started - without waiting for it to finish. May cause problems in multiple - tape backups. */ -#define OSST_ASYNC_WRITES 1 - -/* If OSST_READ_AHEAD is non-zero, blocks are read ahead in fixed block - mode. */ -#define OSST_READ_AHEAD 1 - -/* If OSST_AUTO_LOCK is non-zero, the drive door is locked at the first - read or write command after the device is opened. The door is opened - when the device is closed. */ -#define OSST_AUTO_LOCK 0 - -/* If OSST_FAST_MTEOM is non-zero, the MTEOM ioctl is done using the - direct SCSI command. The file number status is lost but this method - is fast with some drives. Otherwise MTEOM is done by spacing over - files and the file number status is retained. */ -#define OSST_FAST_MTEOM 0 - -/* If OSST_SCSI2LOGICAL is nonzero, the logical block addresses are used for - MTIOCPOS and MTSEEK by default. Vendor addresses are used if OSST_SCSI2LOGICAL - is zero. */ -#define OSST_SCSI2LOGICAL 0 - -/* If OSST_SYSV is non-zero, the tape behaves according to the SYS V semantics. - The default is BSD semantics. */ -#define OSST_SYSV 0 - - -#endif |