tmcha -- Future Domain Corp TMC 845, 8x0, 885 SCSI host adapter driver


NOTE: This driver is no longer supported by SCO, however, it is still provided with SCO OpenServer for your convenience. Contact your hardware vendor for support.

tmcha is the device driver for Future Domain Corp TMC 845, 850, 860, 885 (950 chip) SCSI host adapter cards.

Refer to the Compatible Hardware Web Pages. to determine the support status of your host adapter, or contact your system supplier.

Configuring the tmcha driver

You can configure the tmcha driver using entries in /etc/conf/cf.d/mdevice and /etc/conf/sdevice.d/tmcha. See mdevice(F) and sdevice(F). Changes to these files will only take effect if the kernel is relinked using link_unix(ADM) and the machine rebooted.

Configure tmcha driver-specific characteristics by editing the /etc/conf/pack.d/tmcha/space.c file.

Boot time configuration of SCSI

Use the bootstring(HW) parameters to override the default hardware configuration information. Of special interest are the adapter= parameter that specifies information for the host adapter card that plugs into or is part of the motherboard, and the periph= parameter that specifies information about the host adapter being used by one of the generic peripheral interfaces (Sdsk, Srom, or Stp).

ioctl commands

The tmcha driver supports all standard SCSI ioctls that are defined in the <sys/scsicmd.h> header file and documented on the scsi(HW) manual page.


These error messages associated with tmcha may display on the console. See messages(M) for general information about kernel error messages, including a list of generic device driver errors.

CONFIG: tmcha: Out of jobs (TMC_SCSI_JOBS = max exceeded)
Too many SCSI commands were pending to be dealt with.

NOTICE: tmcha: Non-existent adapter m (only n adapters)
The specified host adapter (m) could not be found.

NOTICE: tmcha: Unexpected SCSI reselection device id=target lun=n error

NOTICE: tmcha: Unexpected reselection device id=target lun=n
One of the peripheral devices made an unexpected reselection.



SCSI interface header files

See also

boot(HW), link_unix(ADM), mdevice(F), mkdev(ADM), sconf(ADM), scsi(HW), sdevice(F)

``Adding SCSI host adapters and peripherals'' in the SCO OpenServer Handbook
SCO OpenServer System Administration Guide

© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003