June 2001 - ixp1200 - lists.cs.princeton.edu

IXP SA-1100 assembly ...
by fryman＠cc.gatech.edu 18 Jun '01

18 Jun '01

hi all, i was wondering if anyone is using the reference for the IXP with respect to the SA-1100 core? specifically, i'm looking for details of the assembly language (prog. ref. manual), registers, etc. i note that in the documentation that comes with the IXP CD (v1.2) one can find the following: getting_started_armcore.pdf : basic registers available ixp1200_prog_ref_manual.pdf : full registers, but uE-specific ixp1200_hw_ref_manual.pdf : difference between ARMv4 & IXP-SA the hw ref manual states that the basis should be the ARM Architecture Reference Manual other documents state that the reference should be ARM V4 Architecture Reference and i note that the ARM.com web site lists the former, which amazon.com also sells... any comments on if this text is sufficient? other texts needed? cheers, josh fryman fryman(a)cc.gatech.edu

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I tried to connect one ethernet port of IXP1200 to one port of other IXP1200
by basavaraj_m＠dacafe.com 16 Jun '01

16 Jun '01

Hi, I tried to connect one ethernet port of IXP1200 to one port of other IXP1200 and tried to transmit a packet but the other IXP1200 is not receiving.Can anybody tell me how to transmit a apcket from one IXP1200 port to the other IXP1200 port. _____________________________________________________________ Tired of limited space on Yahoo and Hotmail? Free 100 Meg email account available at http://www.dacafe.com

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Linux on IXP1200
by Ivan Borissov Ganev 05 Jun '01

05 Jun '01

Does anyone know of a more recent revision of Intel's linux kernel patches, which enable the kernel to boot on the StrongARM of the IXP1200? I am aware of the patche for kernel version 2.3.99, is there a more recent version of it? --Ivan Ganev ganev(a)cc.gatech.edu ------------------------------------------------------------------------------ Ivan Ganev 327236 Georgia Tech Station College of Computing Atlanta, GA 30332 Georgia Institute of Technology 1-(404)-365-8694 ganev(a)cc.gatech.edu http://www.cc.gatech.edu/~ganev ------------------------------------------------------------------------------ Learning is not compulsory. Neither is survival. -- W. Edwards Deming

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RE: [ixp1200] Timer from microengines...
by Sprajc, Barry 05 Jun '01

05 Jun '01

>From microcode, there is a cycle_cnt register which returns a 64 bit value of the cycle count register. It's latency is about that of an SDRAM instruction. It has no interrupt or signals associated with is, so your left with polling this register or reading it on a per-packet bases You could use an SA timer configured to fire off an IRQ at countdown, where the IRQ handler count send an inter_thread signal to one of the microengines. You could swap out on the signal, in which case your microcode sleeps in that thread until the timer is fired off, or you could use the br_signal instruction that causes the microcode for that thead to branch when the inter thread signal is fired off by the SA, allowing you to perform other processing until the signal arrvives. Hope this helps, barry.sprajc(a)intel.com -----Original Message----- From: Austen McDonald [mailto:austen@cc.gatech.edu] Sent: Tuesday, June 05, 2001 11:47 AM To: ixp1200(a)CS.Princeton.EDU Subject: [ixp1200] Timer from microengines... Im looking for a timer for use inside microcode (for network protocol timeout). I know there is the timer from the arm but Ive heard that the IX bus has some kind of timer that I might be able to tap into? Does anyone know about this? Must I use the SA timer if I want to wait a certain period of time? Austen McDonald austen(a)cc.gatech.edu God does not care about our mathematical difficulties. He integrates empirically. -- Albert Einstein

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RE: [ixp1200] Timer from microengines...
by Heaton, Eric D 05 Jun '01

05 Jun '01

Austen, The CYCLE_CNT CSR (accessable from the IX Bus Interface Unit) can be used to implement timing schemes. Have you taken a look at the cycle macros (found in \IXP1200\Microcode\include\cycle.uc) for examples on how to access this 64-bit counter? Eric Heaton Technical Marketing Engineer Intel Corporation - PNPO phone: 978-568-6027 -----Original Message----- From: Austen McDonald [mailto:austen@cc.gatech.edu] Sent: Tuesday, June 05, 2001 2:47 PM To: ixp1200(a)CS.Princeton.EDU Subject: [ixp1200] Timer from microengines... Im looking for a timer for use inside microcode (for network protocol timeout). I know there is the timer from the arm but Ive heard that the IX bus has some kind of timer that I might be able to tap into? Does anyone know about this? Must I use the SA timer if I want to wait a certain period of time? Austen McDonald austen(a)cc.gatech.edu God does not care about our mathematical difficulties. He integrates empirically. -- Albert Einstein

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Timer from microengines...
by Austen McDonald 05 Jun '01

05 Jun '01

Im looking for a timer for use inside microcode (for network protocol timeout). I know there is the timer from the arm but Ive heard that the IX bus has some kind of timer that I might be able to tap into? Does anyone know about this? Must I use the SA timer if I want to wait a certain period of time? Austen McDonald austen(a)cc.gatech.edu God does not care about our mathematical difficulties. He integrates empirically. -- Albert Einstein

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