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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [scsi/] [st.h] - Rev 1772
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#ifndef _ST_H #define _ST_H /* $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/rc203soc/sw/uClinux/drivers/scsi/st.h,v 1.1 2005-12-20 10:17:45 jcastillo Exp $ */ #ifndef _SCSI_H #include "scsi.h" #endif /* The tape buffer descriptor. */ typedef struct { unsigned char in_use; unsigned char dma; /* DMA-able buffer */ int buffer_size; int buffer_blocks; int buffer_bytes; int read_pointer; int writing; int last_result; int last_result_fatal; unsigned char *b_data; int orig_size; unsigned char *orig_b_data; } ST_buffer; /* The tape mode definition */ typedef struct { unsigned char defined; unsigned char do_async_writes; unsigned char do_buffer_writes; unsigned char do_read_ahead; unsigned char defaults_for_writes; unsigned char default_compression; /* 0 = don't touch, etc */ short default_density; /* Forced density, -1 = no value */ int default_blksize; /* Forced blocksize, -1 = no value */ } ST_mode; #define ST_NBR_MODE_BITS 2 #define ST_NBR_MODES (1 << ST_NBR_MODE_BITS) #define ST_MODE_SHIFT (7 - ST_NBR_MODE_BITS) #define ST_MODE_MASK ((ST_NBR_MODES - 1) << ST_MODE_SHIFT) /* The status related to each partition */ typedef struct { unsigned char rw; unsigned char moves_after_eof; unsigned char at_sm; unsigned char last_block_valid; u32 last_block_visited; } ST_partstat; #define ST_NBR_PARTITIONS 4 /* The tape drive descriptor */ typedef struct { kdev_t devt; unsigned capacity; struct wait_queue * waiting; Scsi_Device* device; Scsi_Cmnd SCpnt; struct semaphore sem; ST_buffer * buffer; /* Drive characteristics */ unsigned char omit_blklims; unsigned char do_auto_lock; unsigned char can_bsr; unsigned char can_partitions; unsigned char two_fm; unsigned char fast_mteom; unsigned char restr_dma; unsigned char scsi2_logical; unsigned char default_drvbuffer; /* 0xff = don't touch, value 3 bits */ int write_threshold; /* Mode characteristics */ ST_mode modes[ST_NBR_MODES]; int current_mode; /* Status variables */ int partition; int new_partition; int nbr_partitions; /* zero until partition support enabled */ ST_partstat ps[ST_NBR_PARTITIONS]; unsigned char dirty; unsigned char ready; unsigned char eof; unsigned char write_prot; unsigned char drv_write_prot; unsigned char in_use; unsigned char eof_hit; unsigned char blksize_changed; unsigned char density_changed; unsigned char compression_changed; unsigned char drv_buffer; unsigned char density; unsigned char door_locked; unsigned char rew_at_close; int block_size; int min_block; int max_block; int recover_count; int drv_block; /* The block where the drive head is */ struct mtget * mt_status; #if DEBUG unsigned char write_pending; int nbr_finished; int nbr_waits; #endif } Scsi_Tape; extern Scsi_Tape * scsi_tapes; /* Values of eof */ #define ST_NOEOF 0 #define ST_FM 1 #define ST_EOM_OK 2 #define ST_EOM_ERROR 3 #define ST_EOD 4 /* Values of rw */ #define ST_IDLE 0 #define ST_READING 1 #define ST_WRITING 2 /* Values of ready state */ #define ST_READY 0 #define ST_NOT_READY 1 #define ST_NO_TAPE 2 /* Values for door lock state */ #define ST_UNLOCKED 0 #define ST_LOCKED_EXPLICIT 1 #define ST_LOCKED_AUTO 2 #define ST_LOCK_FAILS 3 /* Positioning SCSI-commands for Tandberg, etc. drives */ #define QFA_REQUEST_BLOCK 0x02 #define QFA_SEEK_BLOCK 0x0c /* Setting the binary options */ #define ST_DONT_TOUCH 0 #define ST_NO 1 #define ST_YES 2 #endif
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