diff options
Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h index 1b1de2904d..33246a1ba7 100644 --- a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PciLib.h @@ -1,13 +1,13 @@ /** @file Provides services to access PCI Configuration Space. - - These functions perform PCI configuration cycles using the default PCI configuration - access method. This may use I/O ports 0xCF8 and 0xCFC to perform PCI configuration accesses, - or it may use MMIO registers relative to the PcdPciExpressBaseAddress, or it may use some - alternate access method. Modules will typically use the PCI Library for its PCI configuration - accesses. However, if a module requires a mix of PCI access methods, the PCI CF8 Library or - PCI Express Library may be used in conjunction with the PCI Library. The functionality of - these three libraries is identical. The PCI CF8 Library and PCI Express Library simply use + + These functions perform PCI configuration cycles using the default PCI configuration + access method. This may use I/O ports 0xCF8 and 0xCFC to perform PCI configuration accesses, + or it may use MMIO registers relative to the PcdPciExpressBaseAddress, or it may use some + alternate access method. Modules will typically use the PCI Library for its PCI configuration + accesses. However, if a module requires a mix of PCI access methods, the PCI CF8 Library or + PCI Express Library may be used in conjunction with the PCI Library. The functionality of + these three libraries is identical. The PCI CF8 Library and PCI Express Library simply use explicit access methods. Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> @@ -41,19 +41,19 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. (((Register) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20)) /** - Registers a PCI device so PCI configuration registers may be accessed after + Registers a PCI device so PCI configuration registers may be accessed after SetVirtualAddressMap(). - - Registers the PCI device specified by Address so all the PCI configuration registers + + Registers the PCI device specified by Address so all the PCI configuration registers associated with that PCI device may be accessed after SetVirtualAddressMap() is called. - + 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 + @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. |