Sathya,
By default for PCI Adapters, the driver from the option ROM associated with a
PCI Controller will be tried first using the Bus Specific Driver Override rule.
The details on all the rules that determine the order that Driver Binding
Supported() is tried on a specific controller are described in the UEFI
Specification in the description of the UEFI Boot Service ConnectController().
Your use case is also covered in an example in the UEFI Driver Writer's Guide
in section 3.14.2. It is available from the following page:
http://sourceforge.net/apps/mediawiki/tianocore/index.php?title=Driver_Developer
Best regards,
Mike
From: Andrew Fish [mailto:af...@apple.com]
Sent: Wednesday, December 19, 2012 4:03 PM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] How to impose 1 to 1 mapping between driver and controller
The EFI_PCI_IO_PROTOCOL contains a pointer to the RomImage that was filled in
by the PCI bus driver. There is also an attribute bit that lets you know if the
ROM cam from the system or the PCI Card. So your could check the
EFI_PCI_IO_PROTOCOL.RomImage to make sure you are running on the card the ROM
came from.
Andrew Fish
On Dec 19, 2012, at 3:32 PM, "Prakash, Sathya"
<sathya.prak...@lsi.com<mailto:sathya.prak...@lsi.com>> wrote:
Folks,
Let us assume a case where there are two I/O controllers present in the system
with only one controller (c1) having a UEFI Boot Service Driver programmed in
its flash part and the other one (c2) doesn't have the BSD in flash. Both are
having same PCI IDs. I want to ensure in my driver binding's supported or start
routines to make sure the driver manages only the controller from where it
loads and not the other controller. Can it is doable?
Thanks
Sathya
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