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RTEMS PORT OF THE 'em' ETHERNET DRIVER
======================================
This is a port of the intel / FreeBSD 'em' driver as of
2007/7/4 (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_em_driver;
driver_t *libbsdport_netdriver_table[] = {
&libbsdport_em_driver,
/* other drivers here or upstream of 'em' 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[].
*/
"em2" /* use second device supported by the 'em' 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 (driver validates sizes and uses
defaults if requested sizes don't meet requirements).
TESTED WITH:
82544 on motorola MVME5500 (PPC MVE board)
82573 on concurrent technologies PP410 (intel x86) board
TESTED ON:
rtems-4.7
powerpc/beatnik (motorola MVME5500)
i386/pc686 (concurrent technologies PP410 compact PCI)
T.S, 200707
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