989fb3947c
reports on those most welcome!
Fixed problems:
Hang on probe on "fantom" devices.
The probe now use a timeout to avoid hangs if no interrupt
is recevied.
There has also been more general code clenaups, and some reorgs.
112 lines
4.8 KiB
C
112 lines
4.8 KiB
C
/*-
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* Copyright (c) 1998,1999 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: atapi-tape.h,v 1.2 1999/03/03 21:10:29 sos Exp $
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*/
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/* ATAPI tape commands not in std ATAPI command set */
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#define ATAPI_TAPE_REWIND 0x01
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#define ATAPI_TAPE_READ_CMD 0x08
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#define ATAPI_TAPE_WRITE_CMD 0x0a
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#define ATAPI_TAPE_WEOF 0x10
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#define WEOF_WRITE_MASK 0x01
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#define ATAPI_TAPE_SPACE_CMD 0x11
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#define SP_FM 0x01
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#define SP_EOD 0x03
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#define ATAPI_TAPE_ERASE 0x19
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#define ATAPI_TAPE_MODE_SENSE 0x1a
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#define ATAPI_TAPE_LOAD_UNLOAD 0x1b
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#define LU_LOAD_MASK 0x01
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#define LU_RETENSION_MASK 0x02
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#define LU_EOT_MASK 0x04
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#define DSC_POLL_INTERVAL 10
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/* MODE SENSE parameter header */
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struct ast_header {
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u_int8_t data_length; /* total length of data */
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u_int8_t medium_type; /* medium type (if any) */
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u_int8_t dsp; /* device specific parameter */
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u_int8_t bdl; /* block Descriptor Length */
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};
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/* ATAPI tape drive Capabilities and Mechanical Status Page */
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#define ATAPI_TAPE_CAP_PAGE 0x2a
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struct ast_cappage {
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u_int8_t page_code :6; /* page code == 0x2a */
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u_int8_t reserved1_67 :2;
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u_int8_t page_length; /* page Length == 0x12 */
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u_int8_t reserved2;
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u_int8_t reserved3;
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u_int8_t readonly :1; /* read Only Mode */
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u_int8_t reserved4_1234 :4;
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u_int8_t reverse :1; /* supports reverse direction */
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u_int8_t reserved4_67 :2;
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u_int8_t reserved5_012 :3;
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u_int8_t eformat :1; /* supports ERASE formatting */
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u_int8_t reserved5_4 :1;
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u_int8_t qfa :1; /* supports QFA formats */
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u_int8_t reserved5_67 :2;
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u_int8_t lock :1; /* supports locking media */
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u_int8_t locked :1; /* the media is locked */
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u_int8_t prevent :1; /* defaults to prevent state */
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u_int8_t eject :1; /* supports eject */
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u_int8_t disconnect :1; /* can break request > ctl */
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u_int8_t reserved6_5 :1;
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u_int8_t ecc :1; /* supports error correction */
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u_int8_t compress :1; /* supports data compression */
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u_int8_t reserved7_0 :1;
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u_int8_t blk512 :1; /* supports 512b block size */
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u_int8_t blk1024 :1; /* supports 1024b block size */
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u_int8_t reserved7_3456 :4;
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u_int8_t slowb :1; /* restricts byte count */
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u_int16_t max_speed; /* supported speed in KBps */
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u_int16_t max_defects; /* max stored defect entries */
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u_int16_t ctl; /* continuous transfer limit */
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u_int16_t speed; /* current Speed, in KBps */
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u_int16_t buffer_size; /* buffer Size, in 512 bytes */
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u_int8_t reserved18;
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u_int8_t reserved19;
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};
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struct ast_softc {
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struct atapi_softc *atp; /* controller structure */
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int32_t lun; /* logical device unit */
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int32_t flags; /* device state flags */
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int32_t blksize; /* block size (512 | 1024) */
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struct buf_queue_head buf_queue; /* queue of i/o requests */
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struct atapi_params *param; /* drive parameters table */
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struct ast_header header; /* MODE SENSE param header */
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struct ast_cappage cap; /* capabilities page info */
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struct devstat stats; /* devstat entry */
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#ifdef DEVFS
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void *cdevs_token;
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void *bdevs_token;
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#endif
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};
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