From f926e538ce1266f92100a973af30de5d97f36ad2 Mon Sep 17 00:00:00 2001 From: mdkinney Date: Mon, 24 Nov 2008 08:29:02 +0000 Subject: Add runtime registration functions to the 4 PCI Library classes git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6703 6f19259b-4bc3-4df7-8a09-765794883524 --- MdePkg/Include/Library/PciExpressLib.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'MdePkg/Include/Library/PciExpressLib.h') diff --git a/MdePkg/Include/Library/PciExpressLib.h b/MdePkg/Include/Library/PciExpressLib.h index 68d17901f6..098f815510 100644 --- a/MdePkg/Include/Library/PciExpressLib.h +++ b/MdePkg/Include/Library/PciExpressLib.h @@ -38,6 +38,30 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #define PCI_EXPRESS_LIB_ADDRESS(Bus,Device,Function,Offset) \ (((Offset) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20)) +/** + Register a PCI device so PCI configuration registers may be accessed after + SetVirtualAddressMap(). + + If Address > 0x0FFFFFFF, then ASSERT(). + + @param Address Address that encodes the PCI Bus, Device, Function and + Register. + + @retval RETURN_SUCCESS The PCI device was registered for runtime access. + @retval RETURN_UNSUPPORTED An attempt was made to call this function + after ExitBootServices(). + @retval RETURN_UNSUPPORTED The resources required to access the PCI device + at runtime could not be mapped. + @retval RETURN_OUT_OF_RESOURCES There are not enough resources available to + complete the registration. + +**/ +RETURN_STATUS +EFIAPI +PciExpressRegisterForRuntimeAccess ( + IN UINTN Address + ); + /** Reads an 8-bit PCI configuration register. -- cgit v1.2.3