#include <sys/scsi/scsi.h>
int scsi_probe(struct scsi_device *devp, int (*waitfunc)());
scsi_probe() uses the SCSI Inquiry command to test if the device exists. It may retry the Inquiry command as appropriate. If scsi_probe() is successful, it will allocate space for the scsi_inquiry structure and assign the address to the sd_inq member of the scsi_device(9S) structure. scsi_probe() will then fill in this scsi_inquiry(9S) structure and return SCSIPROBE_EXISTS .
scsi_unprobe(9F) is used to undo the effect of scsi_probe().
If the target is a non-CCS device, SCSIPROBE_NONCCS will be returned.
waitfunc indicates what the allocator routines should do when resources are not available; the valid values are:
- NULL_FUNC
- Do not wait for resources. Return SCSIPROBE_NOMEM or SCSIPROBE_FAILURE
- SLEEP_FUNC
- Wait indefinitely for resources.
switch (scsi_probe(devp, NULL_FUNC)) { default: case SCSIPROBE_NORESP: case SCSIPROBE_NONCCS: case SCSIPROBE_NOMEM: case SCSIPROBE_FAILURE: case SCSIPROBE_BUSY: break; case SCSIPROBE_EXISTS: switch (devp->sd_inq->inq_dtype) { case DTYPE_DIRECT: rval = DDI_PROBE_SUCCESS; break; case DTYPE_RODIRECT: rval = DDI_PROBE_SUCCESS; break; case DTYPE_NOTPRESENT: default: break; } } scsi_unprobe(devp);
ANSI Small Computer System Interface-2 (SCSI-2)