Messages in this thread | | | Subject | Re: User mode drivers: part 2: PCI device handling (patch 1/2 for 2.6.11) | From | Albert Cahalan <> | Date | Fri, 11 Mar 2005 00:18:27 -0500 |
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Peter Chubb writes:
> There are three new system calls: > > long usr_pci_open(int bus, int slot, int function, __u64 dma_mask); > Returns a filedescriptor for the PCI device described > by bus,slot,function. It also enables the device, and sets it > up as a bus-mastering DMA device, with the specified dma mask.
You forgot the PCI domain (a.k.a. hose, phb...) number. Also, you might encode bus,slot,function according to the PCI spec. So that gives:
long usr_pci_open(unsigned pcidomain, unsigned devspec, __u64 dmamask);
(with the user library returning an int instead of long)
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