CZ(4) | Device Drivers Manual | CZ(4) |
cz
—
cz* at pci? dev ? function ?
cz
device driver supports the Cyclades-Z series of
multi-port serial adapters. The Cyclades-Z is an intelligent serial controller
comprising:
The MIPS CPU runs firmware provided by the device driver. Communication with the MIPS is performed by modifying data structures located in board local RAM or host RAM.
The Cyclades-Z comes in three basic flavors:
The Cyclades-Z has several features to improve performance under high serial I/O load:
cz
driver first appeared in NetBSD
1.5.
cz
driver was written by Jason R.
Thorpe
<thorpej@zembu.com>
and
cz
driver does not currently implement communication
via host RAM. While this may improve performance by reducing the number of PCI
memory space read/write cycles, it is not straightforward to implement with
the current bus_dma(9) API.
Interrupt mode has not been tested.
There is no support for reading or writing the EEPROM connected to the PLX PCI bus controller.
May 17, 2000 | NetBSD 9.4 |