Messages in this thread | | | Date | Mon, 21 Jul 1997 14:57:41 -0400 | From | mlord <> | Subject | Re: How to scan for PCI devices? (fwd) |
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Iñaky Pérez González wrote: > > Hi > > I'm having a so-stupid-problem (tm) that I'm ashamed of asking > about it, but I can't find my way through so ... if you can help > me, you'll win A BIG NICE smile from me :) (and will be able of > counting with my eternal gratitude): > > So, it's quite silly, as I told. You got this damn USB controller > on the motherboard, an UHCI one, no problem, PCI class id 0x0c03, bus > 0, device 0, function 2, and another one, a CMD add-on board, an > OHCI one, PCI class id 0x0c03, bus 0, device 8, function 0 (0x0c03 is > the USB class and subclass codes for USB host controllers). > > Then I start to scan for pci classes 0x0c03, with the following > code: > > #define USB_CLASS 0x0c03 > > while ((bioscode = pcibios_find_class (USB_CLASS, index, > &bus, &function)) > == PCIBIOS_SUCCESSFUL) > { > index++; > usb_hosts++; > }
The pcibios_find_class() function quite often does NOT WORK!
I tried to use it once within the IDE driver, but had trouble with buggy BIOSs.
-ml
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