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-RTEMS PORT OF THE 'pcn' ETHERNET DRIVER
-=======================================
-
-This is a port of the FreeBSD 'pcn' driver as of
-2007/7/17 (checked out from FreeBSD/head on that date).
-
-SUPPORTED BSPs:
-- you need 'libbsdport' which in turn needs 'libbspExt'
- These work for i386/pc386 and powerpc/new-exception-processing
- BSPs, i.e., the BSP must implement <rtems/pci.h> and <rtems/irq.h>.
-
-USAGE:
-- to attach this driver:
- * define a NULL terminated list with all libbsdport supported
- drivers you want to include with your application:
-
- extern driver_t libbsdport_pcn_driver;
-
- driver_t *libbsdport_netdriver_table[] = {
- &libbsdport_pcn_driver,
- /* other drivers here or upstream of 'pcn' if they support
- * the same hardware but are preferred.
- */
- 0
- };
-
- * specify libbsdport_netdriver_attach for the 'attach' function
- pointer in struct rtems_bsdnet_ifconfig.
-
- * use the 'name' field in struct rtems_bsdnet_ifconfig to filter
- drivers and device instances:
-
- <driver_name><instance>
-
- either may be omitted which means that the next available
- driver/hardware device is to be used. Here are a few examples:
-
- "" /* use first device found supported by any driver in the
- * libbsdport_driver_table[].
- */
-
- "pcn2" /* use second device supported by the 'pcn' driver */
-
- Notes: Counting instances begins with 1 (not 0).
- Consult libbsdport/README for more information.
-
-KNOWN ISSUES:
-- 'ignore_broadcast' and 'mtu' settings from
- struct rtems_bsdnet_ifconfig are ignored. I haven't seen
- many drivers that honour 'ignore_broadcast' and 'mtu' can be
- set using a ioctl(). I'm trying to keep changes to BSD sources
- minimal...
-- ring sizes are restricted fixed to hardcoded size.
-- Only the internal phy of the 973/975 chips are supported
- and will allow SIOCGIFMEDIA/SIOCSIFMEDIA to work. I don't know
- what happens with other chips or external phys.
- Probably, the factory-default setup should work with autonegotiation
- but the ioctls wont. YMMV.
-
-OTHER NOTES:
-- you can use the (more generic) 'le' driver for the 79C971
- and upwards chips, too, but 'pcn' supposedly uses more advanced
- features of these chips.
-
-TESTED WITH:
- Technobox 10/100-TX Ethernet PMC (AMD Am79C973 chip)
-
-TESTED ON:
- rtems-4.7
- powerpc/beatnik (motorola MVME5500 and MVME6100 VME boards)
- i386/pc686 (concurrent technologies PP410 compact PCI)
-
-T.S, 200707