Provides the means to issue various adapter commands to test the card DMA interface and buffer RAM.
The SCIOTRAM operation allows the caller to issue various adapter commands to test the card DMA interface and buffer RAM. The arg parameter block to the SCIOTRAM operation is the sc_ram_test structure. This structure is defined in the /usr/include/sys/scsi.h file and contains the following information:
The SCSI adapter device driver performs no internal retries or other error recovery procedures during execution of this operation. Error logging is inhibited when running this command.
When completed successfully, this operation returns a value of 0. Otherwise, a value of -1 is returned and the errno global variable is set to one of the following values:
|EIO||Indicates that the adapter device driver detected an error. The specific adapter status is returned in the sc_ram_test parameter block. The SCIOTRAM operation is a diagnostic command and, as a result, this error is not logged in the system error log.|
|ENXIO||Indicates that the operation or suboption selected is not supported on this adapter. This should not be treated as an error. The caller must check for this return value first (before other errno values) to avoid mistaking this for a failing command.|
|ETIMEDOUT||Indicates the adapter did not respond with status before the passed command time-out value expired. The SCIOTRAM operation is a diagnostic command, so this error is not logged in the system error log.|
|/dev/scsi0, /dev/scsi1,..., /dev/scsin||Provide an interface to allow SCSI device drivers to access SCSI devices or adapters.|
The rmt SCSI device driver, scdisk SCSI device driver, SCSI Adapter device driver.