8563f77dc9
IBM's DPTA and DTLA series of drives (no other disk vendors are known to support this) on non-Promise controllers (promise controllers lockup when given the tagged queuing specific commands). It gives especially master/slave comboes about 5% better performance. Add support for the Promise ATA100 OEM chip (pdc20265) Add support for the Cyrix 5530 Change the way status is read from the drives, use the alternate status reg when possible. Better support for DEVFS, the acdXtY devices are now created when needed. Lots of little cleanups.
163 lines
6.5 KiB
C
163 lines
6.5 KiB
C
/*-
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* Copyright (c) 1998,1999,2000 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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* $FreeBSD$
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*/
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/* ATAPI tape drive Capabilities and Mechanical Status Page */
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struct ast_cappage {
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/* mode page data 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 reserved :4;
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u_int8_t mode :3; /* buffering mode */
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u_int8_t write_protect :1; /* media is writeprotected */
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u_int8_t blk_desc_len; /* block Descriptor Length */
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/* capabilities page */
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u_int8_t page_code :6;
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#define ATAPI_TAPE_CAP_PAGE 0x2a
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u_int8_t reserved0_6 :1;
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u_int8_t ps :1; /* parameters saveable */
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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 blk32k :1; /* supports 32kb block size */
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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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/* ATAPI OnStream ADR data transfer mode page (ADR unique) */
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struct ast_transferpage {
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/* mode page data 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 blk_desc_len; /* block Descriptor Length */
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/* data transfer page */
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u_int8_t page_code :6;
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#define ATAPI_TAPE_TRANSFER_PAGE 0x30
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u_int8_t reserved0_6 :1;
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u_int8_t ps :1; /* parameters saveable */
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u_int8_t page_length; /* page Length == 0x02 */
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u_int8_t reserved2;
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u_int8_t read32k :1; /* 32k blk size (data only) */
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u_int8_t read32k5 :1; /* 32.5k blk size (data&AUX) */
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u_int8_t reserved3_23 :2;
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u_int8_t write32k :1; /* 32k blk size (data only) */
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u_int8_t write32k5 :1; /* 32.5k blk size (data&AUX) */
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u_int8_t reserved3_6 :1;
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u_int8_t streaming :1; /* streaming mode enable */
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};
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/* ATAPI OnStream ADR vendor identification mode page (ADR unique) */
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struct ast_identifypage {
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/* mode page data 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 blk_desc_len; /* block Descriptor Length */
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/* data transfer page */
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u_int8_t page_code :6;
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#define ATAPI_TAPE_IDENTIFY_PAGE 0x36
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u_int8_t reserved0_6 :1;
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u_int8_t ps :1; /* parameters saveable */
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u_int8_t page_length; /* page Length == 0x06 */
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u_int8_t ident[4]; /* host id string */
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u_int8_t reserved6;
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u_int8_t reserved7;
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};
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/* ATAPI read position structure */
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struct ast_readposition {
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u_int8_t reserved0_05 :6;
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u_int8_t eop :1; /* end of partition */
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u_int8_t bop :1; /* beginning of partition */
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u_int8_t reserved1;
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u_int8_t reserved2;
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u_int8_t reserved3;
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u_int32_t host; /* frame address in buffer */
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u_int32_t tape; /* frame address on tape */
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u_int8_t reserved12;
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u_int8_t reserved13;
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u_int8_t reserved14;
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u_int8_t blks_in_buf; /* blocks in buffer */
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u_int8_t reserved16;
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u_int8_t reserved17;
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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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int lun; /* logical device unit */
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int flags; /* device state flags */
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#define F_CTL_WARN 0x0001 /* warned about CTL wrong? */
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#define F_WRITEPROTECT 0x0002 /* media is writeprotected */
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#define F_DATA_WRITTEN 0x0004 /* data has been written */
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#define F_FM_WRITTEN 0x0008 /* filemark has been written */
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#define F_ONSTREAM 0x0100 /* OnStream ADR device */
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int blksize; /* block size (512 | 1024) */
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struct bio_queue_head bio_queue; /* queue of i/o requests */
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struct atapi_params *param; /* drive parameters table */
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struct ast_cappage cap; /* capabilities page info */
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struct devstat stats; /* devstat entry */
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dev_t dev1, dev2; /* device place holders */
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};
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