101 lines
3.4 KiB
C
101 lines
3.4 KiB
C
/* $NetBSD: atapi_disk.h,v 1.4 2001/05/14 20:35:27 bouyer Exp $ */
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/*
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* Copyright 1998
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* Digital Equipment Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and
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* copied only in accordance with the following terms and conditions.
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* Subject to these conditions, you may download, copy, install,
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* use, modify and distribute this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce
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* and retain this copyright notice and list of conditions as
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* they appear in the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Digital Equipment Corporation. Neither the "Digital Equipment
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* Corporation" name nor any trademark or logo of Digital Equipment
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* Corporation may be used to endorse or promote products derived
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* from this software without the prior written permission of
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* Digital Equipment Corporation.
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*
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* 3) This software is provided "AS-IS" and any express or implied
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* warranties, including but not limited to, any implied warranties
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* of merchantability, fitness for a particular purpose, or
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* non-infringement are disclaimed. In no event shall DIGITAL be
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* liable for any damages whatsoever, and in particular, DIGITAL
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* shall not be liable for special, indirect, consequential, or
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* incidental damages or damages for lost profits, loss of
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* revenue or loss of use, whether such damages arise in contract,
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* negligence, tort, under statute, in equity, at law or otherwise,
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* even if advised of the possibility of such damage.
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*/
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/*
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* Definitions of commands and structures specific to ATAPI disks.
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*
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* Chris Demetriou, January 10, 1998.
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*/
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#define ATAPI_READ_FORMAT_CAPACITIES 0x23
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struct atapi_read_format_capacities {
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u_int8_t opcode;
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u_int8_t byte2;
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u_int8_t reserved1[5];
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u_int8_t length[2];
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u_int8_t reserved2[3];
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};
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struct atapi_capacity_list_header {
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u_int8_t reserved[3];
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u_int8_t length;
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};
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struct atapi_capacity_descriptor {
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u_int8_t nblks[4];
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u_int8_t byte5;
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u_int8_t blklen[3];
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};
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/* codes only valid in the current/maximum capacity descriptor */
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#define ATAPI_CAP_DESC_CODE_MASK 0x3
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/* reserved 0x0 */
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#define ATAPI_CAP_DESC_CODE_UNFORMATTED 0x1
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#define ATAPI_CAP_DESC_CODE_FORMATTED 0x2
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#define ATAPI_CAP_DESC_CODE_NONE 0x3
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#define ATAPI_CAP_DESC_SIZE(n) \
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(sizeof(struct atapi_capacity_list_header) + \
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(n) * sizeof(struct atapi_capacity_descriptor))
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#define ATAPI_CAP_DESC_OFFSET_HEADER 0
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#define ATAPI_CAP_DESC_OFFSET_DESC(n) ATAPI_CAP_DESC_SIZE(n)
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struct atapi_flex_geometry_page {
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u_int8_t pg_code; /* page code */
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u_int8_t pg_length; /* page length */
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u_int8_t xfr_rate[2]; /* transfer rate, Kb/sec */
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u_int8_t nheads; /* number of heads */
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u_int8_t ph_sec_tr; /* physical sectors per track */
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u_int8_t blklen[2]; /* block length (bytes per sector) */
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u_int8_t ncyl[2]; /* number of cylinders */
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u_int8_t reserved1[18];
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u_int8_t rot_rate[2]; /* medium rotation rate (RPM) */
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};
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#define ATAPI_FLEX_GEOMETRY_PAGE 0x05
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union atapi_sd_pages {
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u_int8_t page_code;
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struct atapi_flex_geometry_page flex_geometry;
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};
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struct atapi_sd_mode_data {
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struct scsipi_mode_header_big header;
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union atapi_sd_pages pages;
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};
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#define FLEXGEOMETRYPAGESIZE \
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(sizeof(struct scsipi_mode_header_big) + sizeof(struct atapi_flex_geometry_page))
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