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Data Structures for Drivers | scsi_hba_tran(9S) |
| scsi_hba_tran - SCSI Host Bus Adapter (HBA) driver transport vector structure |
SYNOPSIS
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#include <sys/scsi/scsi.h>
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Solaris architecture specific (Solaris DDI).
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A scsi_hba_tran_t structure defines vectors that an HBA driver exports to SCSA interfaces so that HBA specific functions can be executed.
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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 */
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tran_hba_dip
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dev_info pointer to the HBA supplying the scsi_hba_tran structure.
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tran_hba_private
- Private pointer that the HBA driver can use to refer to the device's soft state structure.
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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.
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tran_sd
- Pointer to scsi_device(9S) structure if cloning; otherwise NULL.
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tran_tgt_init
- The function entry allowing per-target HBA initialization, if necessary.
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tran_tgt_probe
- The function entry allowing per-target scsi_probe(9F) customization, if necessary.
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tran_tgt_free
- The function entry allowing per-target HBA deallocation, if necessary.
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tran_start
- The function entry that starts a SCSI command execution on the HBA hardware.
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tran_reset
- The function entry that resets a SCSI bus or target device.
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tran_abort
- The function entry that aborts one SCSI command, or all pending SCSI commands.
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tran_getcap
- The function entry that retrieves a SCSI capability.
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tran_setcap
- The function entry that sets a SCSI capability.
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tran_init_pkt
- The function entry that allocates a scsi_pkt structure.
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tran_destroy_pkt
- The function entry that frees a scsi_pkt structure allocated by tran_init_pkt.
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tran_dmafree
- The function entry that frees DMA resources that were previously allocated by tran_init_pkt.
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tran_sync_pkt
- Synchronize data in pkt after a data transfer has been completed.
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tran_reset_notify
- The function entry allowing a target to register a bus reset notification request with the HBA driver.
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tran_bus_reset
- The function entry that resets the SCSI bus without resetting targets.
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tran_quiesce
- The function entry that waits for all outstanding commands to complete and blocks (or queues) any I/O requests issued.
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tran_unquiesce
- The function entry that allows I/O activities to resume on the SCSI bus.
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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
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