On Wed, 25 Jan 2006 14:24:52 +0100 (CET) dave at luscher.co.uk wrote:

I don't have the specification, but the book "PCI Express System Architecture" should contain most or all of the info needed.
I once saw a draft of the specification on the site of a european university once, but I don't remeber the URL.

Philipp

dave at luscher.co.uk wrote: YES!!! The KAD-Project is highly interessted in doing a design in pci-express. The pci2wishbone bridge is fine, but pci is old and dying. There is a pci-expres-phy that xilinx promotes for the spartan3e (yes the have slow IOs:-) It is called PXE1300 ? sonething. The KAD (www.openhardware.de/digital/kad) is a fpga based accelerator board to accelerate the linux-kernel with open-source cores. For example: In future we will use loop-aes with a aes-core running in an fpga of the KAD. So if you are interessted in designing a pci-express-core (hopefully an extension to the pci2wishbone-bridge) we would be very delighted. Additionally we will support your efforts as well as we can. Greetings LuJa

dave at luscher.co.uk wrote:

YES!!!

The KAD-Project is highly interessted in doing a design in pci-express.

The pci2wishbone bridge is fine, but pci is old and dying.

There is a pci-expres-phy that xilinx promotes for the spartan3e (yes
the have slow IOs:-)
It is called PXE1300 ? sonething.

The KAD (www.openhardware.de/digital/kad) is a fpga based accelerator
board to accelerate the linux-kernel
with open-source cores. For example: In future we will use loop-aes with
a aes-core running in an fpga of the KAD.

So if you are interessted in designing a pci-express-core (hopefully an
extension to the pci2wishbone-bridge)
we would be very delighted. Additionally we will support your efforts as
well as we can.

Greetings

LuJa

I am interested in doing an add-in board for a PC using PCI Express.
PCI-SIG won't let anyone have the specification without paying. Can
anyone help, I need the mechanical, electrical and ideally the protocol.

Given that Phillips and TI make the physical to xpipe (2.5 Gbit Serdes)
then an open core for PCI Express is possible. Is anyone interested?

Dave & others: I have spent a few months coding parts of a PCI Express core. In fact, I started a Open Cores project. Its unfortunately quite empty at this point. ( I have been involved with making a living of late. ) The "PCI Express System Architecture" book is indeed a reasonable substitute for the full PCI-Sig specification. The URL where the PCI-Sig spec was formerly available has been closed (is this a surprise ? it was: http://chemie.pedf.cuni.cz/eagle/documents/pci_express_10.pdf ). In any case, I would be willing to help with the project -- possibly help organize the development. It appears there are a number of people interested. It is not a single person task. bj Porcella ----- Original Message ----- From: dave at luscher.co.uk> To: pci at opencores.org> Sent: Wednesday, January 25, 2006 8:24 AM Subject: [pci] Anyone have a Specification for PCI Express?

pkk at spth.de wrote: Here you are: http://web.archive.org/web/*/http://chemie.pedf.cuni.cz/eagle/documents/pci_express_10.pdf The link works. LuJa

Hi Ludwig, The net police got in and broke the link before I could download it! Thanks anyway Dave ----- Original Message ----- From: Ludwig Jaffejaffe at o...> To: Date: Wed Jan 25 17:24:26 CET 2006 Subject: [pci] Anyone have a Specification for PCI Express? http://web.archive.org/web/*/http://chemie.pedf.cuni.cz/eagle/docum ents/pci_express_10.pdf

Hi dave, it still works: http://web.archive.org/web/20040128025958/http://chemie.pedf.cuni.cz/eagle/documents/pci_express_10.pdf Have fun with it! lets join forces. I want to develop the kernel-accelerator-device http://www.openhardware.de/digital/kad/ > which is a PCI-Card having reprogrammable FPGAs on it to accelerate the linux-kernel for tasks like AES, video transcoding. Additionally the KAD will be an universal development- plattform. So one can build an oscilloscope, Logic-Analyzer, pattern-generator, function-generator, software-definded Radio (Receiver, Transmitter), and even an incircuit emulator for some controllers. It depends only on cores which are to be written and Add-On-Modules that are to be designed. The KAD is as open as possible. The KAD will base on wishbone. So the PCI2WB-Bridge is essential. A PCI-Express2WB-Bridge would be great! Is your Design an addon for the PCI2WB-Bridge? If so, it would be great, Hagen (www.chipforge.org) and I would be pleased to support you. Greetings LuJa dave at luscher.co.uk wrote:

That link is very touchy. Can't download the entire file. is there another link ? Can someone share it over Gnutella or IRC please ? Thanks, Abhijit On 1/31/06, Ludwig Jaffe jaffe at openhardware.de> wrote: -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/pci/attachments/20060201/71890da1/attachment.html

Ludwig Jaffe wrote:
I'm intrigued. I see it's potential value as a software accelerator (i.e. a gimp accelerator, etc.) but I think there are some issues that may bite you. Worst is that the bus mastering capabilities of the pci_bridge32 WB-to-pci bridge are weak. I found while doing a video transmitter that I could not get adequate speed for DMA out of host memory for long bursts. Short bursts (128 words or so) are good, but when one wants to read megabytes from the host, the burst fifos stall often and anyhow do not support continuous pipelined bursts. So data transfer is less then 1/2 what one would expect for PCI. So the core PCI will need work. ETc. -- Steve Williams "The woods are lovely, dark and deep. steve at icarus.com But I have promises to keep, http://www.icarus.com and lines to code before I sleep, http://www.picturel.com And lines to code before I sleep."