Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/atapi-tape.h
Version:
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1 /*- 2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: releng/8.4/sys/dev/ata/atapi-tape.h 178067 2008-04-10 13:05:05Z sos $ 27 */ 28 29 /* ATAPI tape drive Capabilities and Mechanical Status Page */ 30 struct ast_cappage { 31 /* mode page data header */ 32 u_int8_t data_length; /* total length of data */ 33 u_int8_t medium_type; /* medium type (if any) */ 34 u_int8_t reserved :4; 35 u_int8_t mode :3; /* buffering mode */ 36 u_int8_t write_protect :1; /* media is writeprotected */ 37 u_int8_t blk_desc_len; /* block Descriptor Length */ 38 39 /* capabilities page */ 40 u_int8_t page_code :6; 41 #define ATAPI_TAPE_CAP_PAGE 0x2a 42 43 u_int8_t reserved0_6 :1; 44 u_int8_t ps :1; /* parameters saveable */ 45 u_int8_t page_length; /* page Length == 0x12 */ 46 u_int8_t reserved2; 47 u_int8_t reserved3; 48 u_int8_t readonly :1; /* read Only Mode */ 49 u_int8_t reserved4_1234 :4; 50 u_int8_t reverse :1; /* supports reverse direction */ 51 u_int8_t reserved4_67 :2; 52 u_int8_t reserved5_012 :3; 53 u_int8_t eformat :1; /* supports ERASE formatting */ 54 u_int8_t reserved5_4 :1; 55 u_int8_t qfa :1; /* supports QFA formats */ 56 u_int8_t reserved5_67 :2; 57 u_int8_t lock :1; /* supports locking media */ 58 u_int8_t locked :1; /* the media is locked */ 59 u_int8_t prevent :1; /* defaults to prevent state */ 60 u_int8_t eject :1; /* supports eject */ 61 u_int8_t disconnect :1; /* can break request > ctl */ 62 u_int8_t reserved6_5 :1; 63 u_int8_t ecc :1; /* supports error correction */ 64 u_int8_t compress :1; /* supports data compression */ 65 u_int8_t reserved7_0 :1; 66 u_int8_t blk512 :1; /* supports 512b block size */ 67 u_int8_t blk1024 :1; /* supports 1024b block size */ 68 u_int8_t reserved7_3456 :4; 69 u_int8_t blk32k :1; /* supports 32kb block size */ 70 u_int16_t max_speed; /* supported speed in KBps */ 71 u_int16_t max_defects; /* max stored defect entries */ 72 u_int16_t ctl; /* continuous transfer limit */ 73 u_int16_t speed; /* current Speed, in KBps */ 74 u_int16_t buffer_size; /* buffer Size, in 512 bytes */ 75 u_int8_t reserved18; 76 u_int8_t reserved19; 77 }; 78 79 /* ATAPI OnStream ADR data transfer mode page (ADR unique) */ 80 struct ast_transferpage { 81 /* mode page data header */ 82 u_int8_t data_length; /* total length of data */ 83 u_int8_t medium_type; /* medium type (if any) */ 84 u_int8_t dsp; /* device specific parameter */ 85 u_int8_t blk_desc_len; /* block Descriptor Length */ 86 87 /* data transfer page */ 88 u_int8_t page_code :6; 89 #define ATAPI_TAPE_TRANSFER_PAGE 0x30 90 91 u_int8_t reserved0_6 :1; 92 u_int8_t ps :1; /* parameters saveable */ 93 u_int8_t page_length; /* page Length == 0x02 */ 94 u_int8_t reserved2; 95 u_int8_t read32k :1; /* 32k blk size (data only) */ 96 u_int8_t read32k5 :1; /* 32.5k blk size (data&AUX) */ 97 u_int8_t reserved3_23 :2; 98 u_int8_t write32k :1; /* 32k blk size (data only) */ 99 u_int8_t write32k5 :1; /* 32.5k blk size (data&AUX) */ 100 u_int8_t reserved3_6 :1; 101 u_int8_t streaming :1; /* streaming mode enable */ 102 }; 103 104 /* ATAPI OnStream ADR vendor identification mode page (ADR unique) */ 105 struct ast_identifypage { 106 /* mode page data header */ 107 u_int8_t data_length; /* total length of data */ 108 u_int8_t medium_type; /* medium type (if any) */ 109 u_int8_t dsp; /* device specific parameter */ 110 u_int8_t blk_desc_len; /* block Descriptor Length */ 111 112 /* data transfer page */ 113 u_int8_t page_code :6; 114 #define ATAPI_TAPE_IDENTIFY_PAGE 0x36 115 116 u_int8_t reserved0_6 :1; 117 u_int8_t ps :1; /* parameters saveable */ 118 u_int8_t page_length; /* page Length == 0x06 */ 119 u_int8_t ident[4]; /* host id string */ 120 u_int8_t reserved6; 121 u_int8_t reserved7; 122 }; 123 124 /* ATAPI read position structure */ 125 struct ast_readposition { 126 u_int8_t reserved0_05 :6; 127 u_int8_t eop :1; /* end of partition */ 128 u_int8_t bop :1; /* beginning of partition */ 129 u_int8_t reserved1; 130 u_int8_t reserved2; 131 u_int8_t reserved3; 132 u_int32_t host; /* frame address in buffer */ 133 u_int32_t tape; /* frame address on tape */ 134 u_int8_t reserved12; 135 u_int8_t reserved13; 136 u_int8_t reserved14; 137 u_int8_t blks_in_buf; /* blocks in buffer */ 138 u_int8_t reserved16; 139 u_int8_t reserved17; 140 u_int8_t reserved18; 141 u_int8_t reserved19; 142 }; 143 144 struct ast_softc { 145 int flags; /* device state flags */ 146 #define F_CTL_WARN 0x0001 /* warned about CTL wrong? */ 147 #define F_WRITEPROTECT 0x0002 /* media is writeprotected */ 148 #define F_DATA_WRITTEN 0x0004 /* data has been written */ 149 #define F_FM_WRITTEN 0x0008 /* filemark has been written */ 150 #define F_ONSTREAM 0x0100 /* OnStream ADR device */ 151 152 int blksize; /* block size (512 | 1024) */ 153 struct atapi_params *param; /* drive parameters table */ 154 struct ast_cappage cap; /* capabilities page info */ 155 struct devstat *stats; /* devstat entry */ 156 struct cdev *dev1, *dev2; /* device place holders */ 157 };
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