I'm guessing that you're asking if it has to have as much memory as the resource. If that's the case, the answer is no. You just have to respond to any request in that region.
In other words, you could request a 1 GB region and only respond with useful data in the first 1 MB (respond to any other read with zeros), or map the 1 MB 1024 times into the 1 GB, or anything else you decide.
Sorry if I totally missed the intent of your question,
Myles
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From: linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] On Behalf Of Baski Sent: Wednesday, January 09, 2008 7:06 PM To: linuxbios@linuxbios.org Subject: [LinuxBIOS] PCI device memory resource
For a PCI device to request memory resource of ,say 1MB, should it have onboard memory of 1MB ? TIA
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