113 lines
4.3 KiB
C
113 lines
4.3 KiB
C
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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_REQUEST_SENSE 0x03
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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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/*
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* MODE SENSE parameter header
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*/
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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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/*
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* ATAPI tape drive Capabilities and Mechanical Status Page
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*/
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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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/*
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* REQUEST SENSE structure
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*/
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struct ast_reqsense {
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u_int8_t error_code :7; /* Current or deferred errors */
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u_int8_t valid :1; /* Follows QIC-157C */
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u_int8_t reserved1; /* Segment Number - Reserved */
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u_int8_t sense_key :4; /* Sense Key */
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u_int8_t reserved2_4 :1; /* Reserved */
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u_int8_t ili :1; /* Incorrect Length Indicator */
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u_int8_t eom :1; /* End Of Medium */
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u_int8_t filemark :1; /* Filemark */
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u_int8_t info __attribute__((packed)); /* Cmd specific info */
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u_int8_t asl; /* Additional sense length (n-7) */
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u_int8_t command_specific; /* Additional cmd specific info */
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u_int8_t asc; /* Additional Sense Code */
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u_int8_t ascq; /* Additional Sense Code Qualifier */
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u_int8_t replaceable_unit_code; /* Field Replaceable Unit Code */
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u_int8_t sk_specific1 :7; /* Sense Key Specific */
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u_int8_t sksv :1; /* Sense Key Specific info valid */
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u_int8_t sk_specific2; /* Sense Key Specific */
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u_int8_t sk_specific3; /* Sense Key Specific */
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u_int8_t pad[2]; /* Padding */
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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;
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void *bdevs;
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#endif
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};
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