Chapter 5: User-Level Access to SCSI Devices

• "Overview of the dsreq Driver" gives a summary of the features and use of the generic SCSI device driver.

• "Generic SCSI Device Special Files" documents the format of the names and major and minor numbers of generic SCSI files.

• "The dsreq Structure" gives details of the request structure that is the primary input to the generic SCSI driver.

• "Testing the Driver Configuration" documents the use of the DS_CONF ioctl() operation.

• "Using dslib Functions" describes the functions that make it simpler to use the generic SCSI driver.

• "Using the Special DS_RESET and DS_ABORT Calls" describes two special functions of the generic SCSI driver.

If you are specifically interested in using audio data from a CDROM or DAT drive, you should use the special-purpose libraries for CDROM and DAT that are included in the IRIS Digital Media Development Environment. These libraries are built upon the generic SCSI driver, but provide convenient, audio-oriented functions. For more information on these libraries, see the IRIS Digital Media Programming Guide, document number 008-1799-040.

If your interest is in controlling SCSI devices at the kernel level, see Part V, "SCSI Device Drivers."

Overview of the dsreq Driver

Generic SCSI Device Special Files

The dsreq Structure

Testing the Driver Configuration

Using the Special DS_RESET and DS_ABORT Calls

Using dslib Functions

Example dslib Program