From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bart Veer <bartv@cygnus.co.uk>
To: grante@visi.com
Cc: ecos-discuss@sourceware.cygnus.com
Subject: [ECOS] Re: Ethernet and Serial drivers for Linux target?
Date: Thu, 11 Nov 1999 04:44:00 -0000
Message-id: <199911111243.MAA30839@sheesh.cygnus.co.uk>
References: <19991110143853.A18972@visi.com>
X-SW-Source: 1999-11/msg00036.html

>>>>> "Grant" == Grant Edwards <grante@visi.com> writes:

    Grant> I told management that it should be possible to write
    Grant> serial port and Ethernet device drivers for the Linux eCos
    Grant> target, thus allowing people to do eCos application
    Grant> development on Linux boxes. Of course the performance and
    Grant> timing won't be the same, but for basic application
    Grant> functionality it should be good enough for many things.

    Grant> Has anybody done this? I assume that all you have to do is
    Grant> to map cyg_io_read() and cyg_io_write() into read() and
    Grant> write() calls, and map cyg_io_get_config() and
    Grant> cyg_io_set_config() into appropriate ioctl() calls?

    Grant> The serial driver should be able to use the standard
    Grant> /dev/ttySx devices and the Ethernet driver can use the
    Grant> af_packet module to send and receive Ethernet packets. Is
    Grant> this going to be as straight-forward as I think it is, or
    Grant> have I dug myself into a hole?

In addition to Gary's response, you may want to look at a short thread
on the ecos-discuss mailing list "Serial device driver for linux
synthetic target!" last month,
http://sourceware.cygnus.com/ml/ecos-discuss/1999-10/
This discussed a couple of ways of tackling the problem. So far I have
not received any contributions in this area.

Bart Veer // eCos net maintainer