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The Fourier transform (FT) decomposes a function of time (a signal) into its constituent frequencies.
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scsi_hba_tran(9s) [php man page]

scsi_hba_tran(9S)					    Data Structures for Drivers 					 scsi_hba_tran(9S)

NAME
scsi_hba_tran - SCSI Host Bus Adapter (HBA) driver transport vector structure SYNOPSIS
#include <sys/scsi/scsi.h> INTERFACE LEVEL
Solaris architecture specific (Solaris DDI). DESCRIPTION
A scsi_hba_tran_t structure defines vectors that an HBA driver exports to SCSA interfaces so that HBA specific functions can be executed. STRUCTURE MEMBERS
dev_info_t *tran_hba_dip; /* HBAs dev_info pointer */ void *tran_hba_private; /* HBA softstate */ void *tran_tgt_private; /* HBA target private pointer */ struct scsi_device *tran_sd; /* scsi_device */ int (*tran_tgt_init)(); /* Transport target */ /* Initialization */ int (*tran_tgt_probe)(); /* Transport target probe */ void (*tran_tgt_free)(); /* Transport target free */ int (*tran_start)(); /* Transport start */ int (*tran_reset)(); /* Transport reset */ int (*tran_abort)(); /* Transport abort */ int (*tran_getcap)(); /* Capability retrieval */ int (*tran_setcap)(); /* Capability establishment */ struct scsi_pkt *(*tran_init_pkt)(); /* Packet and DMA allocation */ void (*tran_destroy_pkt)(); /* Packet and DMA */ /* deallocation */ void (*tran_dmafree)(); /* DMA deallocation */ void (*tran_sync_pkt)(); /* Sync DMA */ void (*tran_reset_notify)(); /* Bus reset notification */ int (*tran_bus_reset)(); /* Reset bus only */ int (*tran_quiesce)(); /* Quiesce a bus */ int (*tran_unquiesce)(); /* Unquiesce a bus */ tran_hba_dip dev_info pointer to the HBA supplying the scsi_hba_tran structure. tran_hba_private Private pointer that the HBA driver can use to refer to the device's soft state structure. tran_tgt_private Private pointer that the HBA can use to refer to per-target specific data. This field can only be used when the SCSI_HBA_TRAN_CLONE flag is specified in scsi_hba_attach(9F). In this case, the HBA driver must initialize this field in its tran_tgt_init(9E) entry point. tran_sd Pointer to scsi_device(9S) structure if cloning; otherwise NULL. tran_tgt_init The function entry allowing per-target HBA initialization, if necessary. tran_tgt_probe The function entry allowing per-target scsi_probe(9F) customization, if necessary. tran_tgt_free The function entry allowing per-target HBA deallocation, if necessary. tran_start The function entry that starts a SCSI command execution on the HBA hardware. tran_reset The function entry that resets a SCSI bus or target device. tran_abort The function entry that aborts one SCSI command, or all pending SCSI commands. tran_getcap The function entry that retrieves a SCSI capability. tran_setcap The function entry that sets a SCSI capability. tran_init_pkt The function entry that allocates a scsi_pkt structure. tran_destroy_pkt The function entry that frees a scsi_pkt structure allocated by tran_init_pkt. tran_dmafree The function entry that frees DMA resources that were previously allocated by tran_init_pkt. tran_sync_pkt Synchronize data in pkt after a data transfer has been completed. tran_reset_notify The function entry allowing a target to register a bus reset notification request with the HBA driver. tran_bus_reset The function entry that resets the SCSI bus without resetting targets. tran_quiesce The function entry that waits for all outstanding commands to complete and blocks (or queues) any I/O requests issued. tran_unquiesce The function entry that allows I/O activities to resume on the SCSI bus. SEE ALSO
tran_abort(9E), tran_bus_reset(9E), tran_destroy_pkt(9E), tran_dmafree(9E), tran_getcap(9E), tran_init_pkt(9E), tran_quiesce(9E), tran_reset(9E), tran_reset_notify(9E), tran_setcap(9E), tran_start(9E), tran_sync_pkt(9E), tran_tgt_free(9E), tran_tgt_init(9E), tran_tgt_probe(9E), tran_unquiesce(9E), ddi_dma_sync(9F), scsi_hba_attach(9F), scsi_hba_pkt_alloc(9F), scsi_hba_pkt_free(9F), scsi_probe(9F), scsi_device(9S), scsi_pkt(9S) Writing Device Drivers SunOS 5.10 20 Sep 1994 scsi_hba_tran(9S)

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