January 2004 - ixp1200 - lists.cs.princeton.edu

Behavior of the RFIFO.
by Mohamed Kone 27 Jan '04

27 Jan '04

Good day to everyone, I am new to development on IXP1200 and I have a few questions about the RFIFO's behavior. How do we know/test that the RFIFO is full? When the RFIFO is full, what is the default behavior? Does the previous content get overwritten by incoming packets or nothing gets inside until the RFIFO has space? Is the default behavior customable? Thank you for your time. Mohamed Kone College of Computing @ Georgia Tech Email: lechefs(a)cc.gatech.edu

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RE: [ixp1200] Help needed regarding programming the Strong Arm
by David Mentre 22 Jan '04

22 Jan '04

Hello, > From: David Mentre [mailto:Mentre@tcl.ite.mee.com] > But, do you really need a simulator? As far as I know, the > main advantage of > having a general purpose processor like the ARM core on the > IXP processor is > to be able to program with usual development tools (C, etc.). > Why don't you > program on x86 and then cross-compile towards your IXP1200 ARM target? BTW, it reminds me that the Developer Workbench is able to execute Foreign Models, and Intel provides versions of its API running with the simulator. It should be possible to execute the C code running on the core as a model interfaced with the simulator. I've not tested it however. Yours, d. -- David Mentré <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

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RE: [ixp1200] Help needed regarding programming the Strong Arm
by David Mentre 22 Jan '04

22 Jan '04

Hello sharmila, > From: sharmila radhakrishnan [mailto:shar_mila2002in@yahoo.co.in] > Are there any > simulators available for programming the Strong Arm and > running them without hardware support ? You'll find on the web several ARM simulators. I don't know however there accuracy regarding StrongARM instruction set. SimIT-ARM http://www.ee.princeton.edu/~wqin/armsim.htm ARM simulator in GDB: http://www.gnu.org/software/gdb/gdb.html But, do you really need a simulator? As far as I know, the main advantage of having a general purpose processor like the ARM core on the IXP processor is to be able to program with usual development tools (C, etc.). Why don't you program on x86 and then cross-compile towards your IXP1200 ARM target? I hope it helps, Yours, d. -- David Mentré <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

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Help needed regarding programming the Strong Arm
by sharmila radhakrishnan 22 Jan '04

22 Jan '04

Hello All, I would like to know how to program the strongArm processor.At present I have developer workbench.Are there any simulators available for programming the Strong Arm and running them without hardware support ? Do let me know.Thanx in Advance. With regards, Sandya Yahoo! India Mobile: Ringtones, Wallpapers, Picture Messages and more.Download now.

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RE: [ixp1200] Debugging on Hardware
by David Mentre 20 Jan '04

20 Jan '04

Hello Frank, > From: Frank Meerkoetter [mailto:meerkoetter@stud.fbi.fh-darmstadt.de] > Sent: Tuesday, January 20, 2004 8:57 AM > # ./WBSrvr > Rs_udbg_server RPC Task started > Rs_udbg_server TCP created > Rs_udbg_server entering svc_run > enter rs_udbg_attachlib_1 - ClieDram Tmp Physical - Virtual - p_to_v = > 0xdf4be00 > ntName=121.110.43.16:1331, MeMasMeDrv: unknown ioctl code 0xc04c7814 > k=f000f > Target BIG ENDIAN > MeDrv: MEDRV_SYSMEMSIZE ioctl failed, err = 5f > leave rs_udbg_attachlib_1 - obj=9100 Apparently, the WBSrvr failed when it wants to access microengines through MeDrv.o using IOCTLs on it. Have you loaded this kernel module? On the IXP2400, one should do "insmod MeDrv.o" before starting WBSrvr. I hope it helps, yours, d. -- David Mentré <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

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Debugging on Hardware
by Frank Meerkoetter 20 Jan '04

20 Jan '04

Hello, i would like to use the "Debug on HW" feature of the Workbench. I'm running the the Workbench Backend on the Target. If i try to download some code i get the following error at the target. # ./WBSrvr Rs_udbg_server RPC Task started Rs_udbg_server TCP created Rs_udbg_server entering svc_run enter rs_udbg_attachlib_1 - ClieDram Tmp Physical - Virtual - p_to_v = 0xdf4be00 ntName=121.110.43.16:1331, MeMasMeDrv: unknown ioctl code 0xc04c7814 k=f000f Target BIG ENDIAN MeDrv: MEDRV_SYSMEMSIZE ioctl failed, err = 5f leave rs_udbg_attachlib_1 - obj=9100 The message at the Workbenchside is the following: "Attach to debug library operation failed" I'm using an IXDP2800, the MontaVista Preview Kit 3.0 with an kernel2.4.21-rmk1-ds3 and the IXA-SDK3.1. Does anybody know this problem? TIA Frank

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RE: [ixp1200] IXP2400 Intel libraries: kernel/user space
by David Mentre 15 Jan '04

15 Jan '04

Hello Romit, [ Disclaimer: I'm also new to IXP2400, so do not take my anwser for a definitive one. ] > From: romit dasgupta [mailto:romit@myrealbox.com] > Sent: Thursday, January 15, 2004 5:59 AM > I am working on IXP2400 and want to use the intel provided > libraries for > microcode loading/initialization and running. And in many occasions I > want to access the Resource Manager APIs as well. I read the > documents > as provided by Intel , mainly the following > > Intel IXP2400/IXP2800 Network Processors XScale Support libraries > Reference manual. > > I have not seen any explicit information in the above document which > hints on running the resource manager & core compoent libraries in > kernel space. > Most of the examples that come with the ixa_sdk_3.1 however > loads kernel > modules which implements these libraries. I think you are making an error. Intel libraries are implemented in _user_ space. The kernel module (MeDrv.o) is only used to make microengines CSR _visible_ to user space. > My question is, can i use the Resource Manager API's & Core Component > Library in user space, without loading them as modules > (perhaps building > these as libraries). I can acccess them in kernel space for > sure but I > have a feeling that it can be done through user space as well. Any > insight on this will be highly valuable. You need the module to access CSR spaces of microengines. Otherwise, all the library are in user space. I hope it helps, Yours, david -- David Mentré <mentre(a)tcl.ite.mee.com> - Research engineer (Ph.D.) Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 http://www.mitsubishi-electric-itce.fr

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IXP2400 Intel libraries: kernel/user space
by romit dasgupta 14 Jan '04

14 Jan '04

Hello, I am working on IXP2400 and want to use the intel provided libraries for microcode loading/initialization and running. And in many occasions I want to access the Resource Manager APIs as well. I read the documents as provided by Intel , mainly the following Intel IXP2400/IXP2800 Network Processors XScale Support libraries Reference manual. I have not seen any explicit information in the above document which hints on running the resource manager & core compoent libraries in kernel space. Most of the examples that come with the ixa_sdk_3.1 however loads kernel modules which implements these libraries. My question is, can i use the Resource Manager API's & Core Component Library in user space, without loading them as modules (perhaps building these as libraries). I can acccess them in kernel space for sure but I have a feeling that it can be done through user space as well. Any insight on this will be highly valuable. Regards, -Romit

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Accessing SRAM in IXP2400
by Romit Dasgupta 14 Jan '04

14 Jan '04

Hi, I am using MVista IXDP2400 preview kit on a Radisys board (IXP2400). The board has DRAM at 0x0x00000000-0x10000000 (256M). SRAM Channel 0 (4M) : 0x80000000-0x80400000 SRAM Channel 1 (4M) : 0x90000000-0x90400000 When I boot linux, it can be seen that the kernel is loaded into 0xc0000000 and its alloted a total of 64M in DRAM space. I could not see SRAM at all. To enable SRAM I passed mem=64M mem=4M@0x80000000 in the command line. After compiling the image and loading it I could see that the kernel has 68M but before the root file system could be enabled many of the ioremaps (used by network driver like eepro100) are failing. This failures result in the inability to activate some PCI devices (network card) and thus cannot load the root file system over NFS. Here are the console logs. I have marked some relevant messages by ^^^^^^ Memstart: c000000 Memsize: 4000000 ^^^^^^^^^^^^^^^^^^ Node: 0 Memstart: 80000000 Memsize: 400000 ^^^^^^^^^^^^^^^^^^ Node: 0 On node 0 totalpages: 17408 zone(0): 476160 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: console=ttyS0,57600 ip=bootp root=nfs nohalt mem=64M mem=40 rtsched version <20030619.1708.46> Calibrating delay loop... 599.65 BogoMIPS Memory: 64MB 4MB = 68MB total ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Memory: 62812KB available (1168K code, 237K data, 196K init) XScale Cache/TLB Locking Copyright(c) 2001 MontaVista Software, Inc. XScale cache_lock_init called Calling consistent alloc low_level_page initialized low_level_page @ 0xf4800000 icache_lock_fn @ 0xf4800080 dcache_lock_fn @ 0xf48000a0 icache_unlock_fn @ 0xf4800098 dcache_unlock_fn @ 0xf48000f0 Initializing TLB locking TLB locking initialized Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes) Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) Mount-cache hash table entries: 2048 (order: 2, 16384 bytes) Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 32768 (order: 5, 131072 bytes) POSIX conformance testing by UNIFIX Scanning bus 00 Found 00:00 [8086/9001] 000b40 00 Found 00:08 [8086/b555] 000680 00 Found 00:20 [104c/ac28] 000604 01 Fixups for bus 00 PCI: bus0: Fast back to back transfers enabled Scanning behind PCI bridge 00:04.0, config 010100, pass 0 Scanning bus 01 Found 01:00 [8086/1229] 000200 00 Fixups for bus 01 PCI: bus1: Fast back to back transfers enabled Bus scan for 01 returning with max=01 Scanning behind PCI bridge 00:04.0, config 010100, pass 1 Bus scan for 00 returning with max=01 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd Disabling the Out Of Memory Killer devfs: v1.10 (20020120) Richard Gooch (rgooch(a)atnf.csiro.au) devfs: boot_options: 0x1 JFFS2 version 2.1. (C) 2001, 2002 Red Hat, Inc., designed by Axis Communication. Failed to allocate 401728 bytes for deflate workspace JFFS2 error: Failed to initialise zlib workspaces i2c-core.o: i2c core module version 2.6.2 (20011118) i2c-dev.o: i2c /dev entries driver module version 2.6.2 (20011118) i2c-algo-bit.o: i2c bit algorithm module version 2.6.2 (20011118) pty: 256 Unix98 ptys configured Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI ed ttyS00 at 0xfaffb003 (irq = 2) is a XScale UART pci_window_address = 0x00000000 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ixpctl: unable to __ioremap PCI memory region ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ block: 128 slots per queue, batch=32 RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize loop: loaded (max 8 devices) eepro100.c:v1.09j-t 9/29/99 Donald Becker http://www.scyld.com/network/eepro100l eepro100.c: $Revision: 1.2 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@sas eepro100: cannot remap MMIO region 1000 @ e0200000 Failed to ioremap ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 4096 bind 8192) IP-Config: No network devices available. NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. RAMDISK: Couldn't find valid RAM disk image starting at 0. Freeing initrd memory: 4096K Root-NFS: No NFS server available, giving up. VFS: Unable to mount root fs via NFS, trying floppy. request_module[block-major-2]: Root fs not mounted VFS: Cannot open root device "nfs" or 02:00 Please append a correct "root=" boot option Kernel panic: VFS: Unable to mount root fs on 02:00 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ My question is how do I enable SRAM? I understand the memory locations SRAM & DRAM are discontiguos. I tried doing ioremap and could access SRAM but I feel that ioremap is only a temporary way to access SRAM. The funny thing is that when I also try to enable SRAM channel 1 by mem=64M mem=4M@0x80000000 mem=4M@0x90000000 the system halts after saying Booting the kernel.. __ioremap(0x80000000, 4*1024*1024,0) and later __iounmap works. Not sure if this is the right way to do it. And I havent digged into why ioremaps by PCI devices in the eariler case fails. Any insight will be very useful. Thanks in advance, -Romit

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Running sample application on ENP2611 board
by Ning Weng 09 Jan '04

09 Jan '04

Folks, Recently we got ENP2611 board based on IXP2400. After successfully installed and boot, we are confused to run a simple sample application on the hardware. It is really different with our previous one- ENP2505 based on IXP200. Can you share your experience of playing ENP2611 or kindly point me the right documentation for it? Thanks in advance, Ning

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