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Name

tran_reset - reset a SCSI bus or target

Synopsis

#include <sys/scsi/scsi.h>

int prefixtran_reset(struct scsi_address *ap, int level);

Interface Level

Solaris architecture specific (Solaris DDI).

Arguments

ap
Pointer to the scsi_address(9S) structure.
level
The level of reset required.

Description

The tran_reset() vector in the scsi_hba_tran(9S) structure must be initialized during the HBA driver’s attach(9E) to point to an HBA entry point to be called when a target driver calls scsi_reset(9F) .

tran_reset() must reset the SCSI bus or a SCSI target as specified by level.

level must be one of the following:

RESET_ALL
reset the SCSI bus.
RESET_TARGET
reset the target specified by ap.

tran_reset should set the pkt_reason field of all outstanding packets in the transport layer associated with each target that was successfully reset to CMD_RESET and the pkt_statistics field must be OR ’ed with either STAT_BUS_RESET or STAT_DEV_RESET .

The HBA driver should use a SCSI Bus Device Reset Message to reset a target device.

Packets that are in the transport layer but not yet active on the bus should be returned with pkt_reason set to CMD_RESET , and pkt_statistics OR ’ed with STAT_ABORTED .

Return Values

tran_reset() should return:
  1. on success.
  2. on failure.

See Also

attach(9E) , ddi_dma_buf_setup(9F) , scsi_hba_attach(9F) , scsi_reset(9F) , scsi_address(9S) , scsi_hba_tran(9S)

Notes

If pkt_reason already indicates that an earlier error had occurred for a particular pkt, tran_reset() should not overwrite pkt_reason with CMD_RESET .

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