From a8bf95d0249565f4210ccab5c13232d501ce0c2d Mon Sep 17 00:00:00 2001 From: Till Straumann Date: Wed, 22 Apr 2009 22:06:58 +0000 Subject: - importing updated version from SLAC as of 20090422 --- bsd_eth_drivers/if_pcn/README.rtems | 73 +++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 bsd_eth_drivers/if_pcn/README.rtems (limited to 'bsd_eth_drivers/if_pcn/README.rtems') diff --git a/bsd_eth_drivers/if_pcn/README.rtems b/bsd_eth_drivers/if_pcn/README.rtems new file mode 100644 index 0000000..ab8ba09 --- /dev/null +++ b/bsd_eth_drivers/if_pcn/README.rtems @@ -0,0 +1,73 @@ +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 and . + +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: + + + + 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 -- cgit v1.2.3