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Help: Configure PCI Device in Windows 2k

Dear experts in this area,

I am trying to configure a PCI board plugged into my PC, running Windows

2000 sp3. This board is the Memec PCI development board, with a Spartan II-200 FPGA connected to the 32-bit PCI bus.

I figured that either BIOS or Windows configures the PCI board at bootup, and assigns the BAR0 etc. I am using an FPGA with the Xilinx PCI32 LogiCore. Hence, the Command and Status Register bit 2 (Bus Master) is '0' at startup. How can I set it to '1' after startup?

For those of you familiar with the Xilinx PCI32 LogiCore, I've thought about hard setting the CFG_SELF bit to '1', which will fool the core to initiate master transactions. But in simulation, I see that the ADIO bus does not get the date from the AD bus! A more tedious way is to self configure the PCI core to master, but I am seeking an easier way. My firmware colleague told me I have to make use of the "pci.sys" driver in Windows.

I am not a programmer, and am not familiar with the "pci.sys" driver. Is there an easier way to do this?

Thanks and regards, LC

Reply to
Kang Liat Chuan
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Hello,

This is the responsibility of the device driver for your device. If you don't have one, you will need to write one. You can get the Windows 2000 DDK from Microsoft for examples of how to do it. Alternately you can purchase a device driver development kit. I can think of at least three vendors of such kits.

Basically, when your driver loads, it needs to locate the hardware and then read what's in the BARs to know what addresses it should use to access the hardware. Also, at that time, you would want to clear all the bits in the status regisiter, and then set whatever bits you want in the command register. After that, your hardware is ready to go...

Don't do that; this signal is intended to be used only to enable the core to perform CONFIG reads and writes to its own SELF. And you would only want to do that if you were in some kind of an embedded system with no host.

You still shouldn't do that, unless you are in an embedded system with no host (or you are the host) but that isn't the case if you are in a Windows 2000 system.

I'm not a device driver writer (or even a programmer) and I was able to leverage stuff in the DDK and a commercial device driver development kit to get a driver working in Windows 2000. I took one of the examples that was closest to what I wanted to do and then modified it.

Eric

Reply to
Eric Crabill

Thanks Eric.

I did receive 2 drivers (and their source codes, after I ask) from Memec Design Services, but they only let us access the USERAPP. No provision for configuring the PCI core.

I understand what you described is needed for writing the driver. But when Memec sells the PCI development board, shouldn't it cater to the need to configure PCI master? The example files are all similar to Xilinx example (ping64), including the ucf file. I am just dissappointed that we have to do these extra bits. We had assumed it will be there.

Regards, LC

Reply to
Kang Liat Chuan

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The program can read/write config/memory space in winxp/nt/2k.

Now I can get back to VHDL.

Regards, LC

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Reply to
Kang Liat Chuan

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