tran_dmafree(9E) manual page
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tran_dmafree - SCSI HBA DMA deallocation entry point
#include
<sys/scsi/scsi.h>
void prefixtran_dmafree(struct scsi_address *ap, struct
scsi_pkt *pkt);
Solaris architecture specific (Solaris DDI).
- ap
- A pointer to a scsi_address(9S)
structure.
- pkt
- A pointer to
a scsi_pkt(9S)
structure.
The tran_dmafree() 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_dmafree(9F)
.
tran_dmafree() must deallocate any DMA
resources
previously allocated to this pkt in a call to tran_init_pkt(9E)
. tran_dmafree()
should not free the structure pointed to by pkt itself. Since tran_destroy_pkt(9E)
must also free DMA
resources, it is important that the HBA
driver keeps
accurate note of whether scsi_pkt(9S)
structures have DMA
resources allocated.
attach(9E)
, tran_destroy_pkt(9E)
, tran_init_pkt(9E)
, scsi_dmafree(9F)
,
scsi_dmaget(9F)
, scsi_hba_attach(9F)
, scsi_init_pkt(9F)
, scsi_address(9S)
,
scsi_hba_tran(9S)
, scsi_pkt(9S)
A target driver may call tran_dmafree()
on packets for which no DMA
resources were allocated.
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