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tran_reset(9e) [bsd man page]

tran_reset(9E)							Driver Entry Points						    tran_reset(9E)

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). PARAMETERS
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 either the SCSI bus, a SCSI target device, or a SCSI logical unit 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. RESET_LUN Reset the logical unit specified by ap. tran_reset should set the pkt_reason field of all outstanding packets in the transport layer associated with each target or logical unit that was successfully reset to CMD_RESET and the pkt_statistics field must be OR'ed with either STAT_BUS_RESET (if the SCSI bus was reset) or STAT_DEV_RESET (if the target or logical unit was reset). The HBA driver should use a SCSI Bus Device Reset Message to reset a target device. The HBA driver should use a SCSI Logical Unit Reset Message to reset a logical unit. 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_statis- tics OR'ed with STAT_ABORTED. Support for RESET_LUN is optional but strongly encouraged for new and updated HBA drivers. If an HBA driver provides RESET_LUN support, it must also create the lun-reset capability with a value of zero for each target device instance represented by a valid ap. The HBA is also required to provide the means to return the current value of the lun-reset capability in its tran_getcap(9E) routine, as well as the means to change the value of the lun_reset capability in its tran_setcap(9E) routine. RETURN VALUES
tran_reset() should return: 1 on success. 0 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) Writing Device Drivers 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. SunOS 5.10 12 Jul 2002 tran_reset(9E)

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tran_reset(9E)							Driver Entry Points						    tran_reset(9E)

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). PARAMETERS
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 either the SCSI bus, a SCSI target device, or a SCSI logical unit 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. RESET_LUN Reset the logical unit specified by ap. tran_reset should set the pkt_reason field of all outstanding packets in the transport layer associated with each target or logical unit that was successfully reset to CMD_RESET and the pkt_statistics field must be OR'ed with either STAT_BUS_RESET (if the SCSI bus was reset) or STAT_DEV_RESET (if the target or logical unit was reset). The HBA driver should use a SCSI Bus Device Reset Message to reset a target device. The HBA driver should use a SCSI Logical Unit Reset Message to reset a logical unit. 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_statis- tics OR'ed with STAT_ABORTED. Support for RESET_LUN is optional but strongly encouraged for new and updated HBA drivers. If an HBA driver provides RESET_LUN support, it must also create the lun-reset capability with a value of zero for each target device instance represented by a valid ap. The HBA is also required to provide the means to return the current value of the lun-reset capability in its tran_getcap(9E) routine, as well as the means to change the value of the lun_reset capability in its tran_setcap(9E) routine. RETURN VALUES
tran_reset() should return: 1 on success. 0 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) Writing Device Drivers 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. SunOS 5.10 12 Jul 2002 tran_reset(9E)

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