I noticed that there were many changes to the generic HDLC layer and the network core files. Are these changes necessary to run CPM HDLC?
----- Original Message ----- From: "Rodolfo Giometti" <[EMAIL PROTECTED]> To: <new-software at lists-linuxppc.org> Cc: <paulus at samba.org>; <khc at pm.waw.pl>; <linuxppc-embedded at lists.linuxppc.org> Sent: Wednesday, February 27, 2002 10:00 PM Subject: HDLC/Frame Relay support for MPC8xx > > Hello, > > I developed a driver to support the HDLC/Frame Relay transmission for > the MPC8xx/FADS. Currently the driver supports only the asynchronous > mode but, as soon as I have the proper hardware, I'll add the > synchronous mode too. > > I posted my software hoping that it can be useful and hoping someone > will test and improve it! ;-p > > Since my developing board is not the final product where the software > will work some features are actually not tested or not fully > implemented. > > Please, feel free to write me back for any suggestions or > modifications. > > This software is a part of a bigger project by Ascensit > <http://www.ascensit.com> to expand the current CPM support in > Linux. Our next steps will be: > > * Add a better CPM subsystems support by adding a set of > register/unregister functions and by adding a proc-filesystem support > to track down who are using what. > > * Add the synchronous HDLC support. > > * Add support for other CPM subsystems like, for istance the I2C and > so on. > > * Other minor featurs in order to stabilize the CPM support. > > INSTALL > ======= > > In order to have a working code I took a patched linux-2.4.17 from my > (great) colleague Christian Pellegrin who applied some patched from > denx and modified some code by himself. > > Here the patch from vanilla linux-2.4.17 to linux-2.4.17-fads in order > to have a running code for the FADS developing board. > > Warning! it is possible that this patch adds some extra unneeded code > since nor me nor Christian are able to find the patches that we used > to obtain the working code for the FADS... sorry! That was our fault! > > Obviously if you already have a running kernel for the FADS you don't > need to apply this patch. > > http://www.ascensit.com/developers/ehdlc/patch-linux-2.4.17-fads.gz > > Here the patch from linux-2.4.17-fads to linux-2.4.17-fads-fr in order > to have the right Frame Relay support. > > http://www.ascensit.com/developers/ehdlc/hdlc-2.5.1.patch.gz > http://www.ascensit.com/developers/ehdlc/hdlc-S0.gz > > Here the patch from linux-2.4.17-fads-fr to linux-2.4.17-fads-fr-ehdlc > in order to have my code! :-D > > Please note that my patch doesn't modify the new Frame Relay support > provided by the above patch. > > http://www.ascensit.com/developers/ehdlc/patch-linux-2.4.17-fads-fr-ehdlc.gz > > Obviously you have to apply the above patches in the same order as I > explained. > > MY TESTS > ======== > > The tests I made on my code were divided in two parts: one in order to > test asynchronous HDLC and one to test Frame Relay on asynchronous > HDLC. > > I used only three wires in order to connect my two FADS each other, > and more precisely I used the PINS B2, B3 and B32 of the expansion > connector. Since I used only the TXD and RXD signals I didn't check > the options "CTS and CD input enabled" in order to have "CTS and CD > always asserted". Currently the driver uses only the SCC3. > > In order to configure the HDLC subsystem I used the sethdlc program > version 1.08 (you can find that program on > http://www.ascensit.com/developers/ehdlc/sethdlc.c.gz). > > Regarding the asynchronous HDLC test I used the following commands: > > /sbin/insmod /lib/modules/2.4.17/kernel/drivers/net/wan/syncppp.o > /sbin/insmod /lib/modules/2.4.17/kernel/drivers/net/wan/hdlc.o > /sbin/insmod /lib/modules/2.4.17/kernel/arch/ppc/8xx_io/ehdlc.o > /sbin/sethdlc hdlc0 clock int rate 64000 > > /sbin/sethdlc hdlc0 hdlc nrz no-parity > /sbin/ifconfig hdlc0 192.168.1.1 pointopoint 192.168.1.2 > /sbin/ifconfig hdlc0 192.168.1.2 pointopoint 192.168.1.1 [on the other machine] > > Then I used the normal ping command. > > Regarding the Frame Relay (on asynchronous HDLC) I used the following > commands: > > /sbin/insmod /lib/modules/2.4.17/kernel/drivers/net/wan/syncppp.o > /sbin/insmod /lib/modules/2.4.17/kernel/drivers/net/wan/hdlc.o > /sbin/insmod /lib/modules/2.4.17/kernel/arch/ppc/8xx_io/ehdlc.o > /sbin/sethdlc hdlc0 clock int rate 64000 > > /sbin/sethdlc hdlc0 fr lmi ansi > /sbin/sethdlc hdlc0 fr lmi ansi dce [on the DCE] > /sbin/sethdlc hdlc0 create 666 > /sbin/ifconfig hdlc0 up > /sbin/ifconfig pvc0 192.168.1.1 pointopoint 192.168.1.2 > /sbin/ifconfig pvc0 192.168.1.2 pointopoint 192.168.1.1 [on the other machine] > > Enjoy! :-D > > Rodolfo > > -- > Programs and GNU solutions e-mail: giometti at linux.it > Linux Device Driver giometti at ascensit.com > Embedded Systems home page: giometti.oltrelinux.com > UNIX programming phone: +39 329 7028903 > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
