| Routine | Description |
|---|
| dsopen | Allocate a dsreq type structure and open a device. |
| dsclose | Free the dsreq structure for the SCSI device and close the device. |
| doscsireq | Send a command to the SCSI device or to make another request. |
| filldsreq | Set members of a dsreq type structure. |
| fillg0cmd | Set up the dsreq structure to send a group 0 SCSI command. |
| fillg1cmd | Set up the dsreq structure to send a group 1 SCSI command. |
| inquiry12 | Issue an inquiry command and retrieve information from the device concerning such things as its type. |
| modeselect15 | Issue a group 0 mode select command to a SCSI device. |
| modesense1a | Send a group 0 "mode sense" command to a SCSI device to retrieve the page information from the device. |
| readcapacity25 | Issue a read capacity command to a SCSI device. |
| readextended28 | Issue a read extended command to a SCSI device. |
| requestsense03 | Issue a request sense command and test or probe for the device. |
| senddiagnostic1d | Issue a send diagnostic command and test whether the device or the SCSI bus is online or offline, or run a self-test on the device. |
| testunitready00 | Issue a test unit ready command to the SCSI device. |
| vtostr | Return a pointer to a string describing a table entry value. |
| write0a | Issue a group 0 write command to the SCSI device. |
| writeextended2a | Issue a write extended command to the SCSI device. |