Ubuntu Feisty 7.04 manual page repository
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atapicam - CAM XPT (transport) module for ATAPI devices
The ATAPI/CAM module allows ATAPI devices (CD-ROM, CD-RW, DVD drives, floppy drives such as Iomega Zip, tape drives) to be accessed through the cam(4). scbus(4) must be configured in the kernel as well. The SCSI st(4)) can then be used to access the pass(4), can also be used to send SCSI commands directly to the devices through the CAM API. A separate CAM bus is created for each ATA bus in the system. On each of these buses, target ID 0 is assigned to the master device, and ID 1 is assigned to the slave (provided they are ATAPI devices). Some SCSI commands are intercepted by the driver, and undergo special processing in order to work around limitations of ATAPI devices. Such limitations can be consequences of the ATAPI specification. For example, ATAPI devices do not implement the 6-byte versions of MODE_SELECT, MODE_SENSE, READ, or WRITE. They can also be common bugs, such as hang‐ ing when queried for extended INQUIRY information.
device ata device atapicam device scbus device cd device pass Add the atapicam driver to the kernel. camcontrol devlist Print the list of all devices available through CAM. mount -t cd9660 /dev/cd0 /mnt Mount a CD-ROM from an ATAPI CD-ROM drive (the command above assumes that the ATAPI drive is the only CD-ROM unit). camcontrol(8)
The ATAPI/CAM driver first appeared in FreeBSD 4.8 and FreeBSD 5.0.
The ATAPI/CAM driver was written by Thomas Quinot 〈thomas@FreeBSD.org〉. afd(4)) can be configured in the same kernel. Simultaneous access to the same device through the SCSI generic drivers and the ATAPI-specific drivers may cause problems and is strongly discouraged.