NAME    [Toc]    [Back]

     puc -- PCI ``Universal'' Communications driver

SYNOPSIS    [Toc]    [Back]

     device pci
     device puc
     device sio
     device ppc
     options PUC_FASTINTR

DESCRIPTION    [Toc]    [Back]

     This driver acts as a shim to connect PCI serial and parallel ports to
     the sio(4) and ppc(4) driver.

     The list of supported devices is in sys/dev/puc/pucdata.c.  Support for
     new cards should be added there.

     If the PUC_FASTINTR option is used, the driver will try to use fast
     interrupts.  This should lower the interrupt latency and should be used
     if the sio(4) driver reports silo overflow errors.  It cannot be used if
     the interrupt is shared.

SEE ALSO    [Toc]    [Back]

     ppc(4), sio(4)

HISTORY    [Toc]    [Back]

     This driver took the idea from the NetBSD puc(4) driver and still uses
     the same structure to describe cards, to ease exchanging card info.

BUGS    [Toc]    [Back]

     Only serial ports are supported through the sio(4) driver at the moment.


FreeBSD 5.2.1		       February 7, 2002 		 FreeBSD 5.2.1