diff options
Diffstat (limited to 'MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c')
| -rw-r--r-- | MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c b/MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c index 7547884b1a64..17f15186a6fa 100644 --- a/MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c +++ b/MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c @@ -5,14 +5,8 @@ All assertions for I/O operations are handled in MMIO functions in the IoLib Library. - Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> - This program and the accompanying materials - are licensed and made available under the terms and conditions of the BSD License - which accompanies this distribution. The full text of the license may be found at - http://opensource.org/licenses/bsd-license.php. - - THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, - WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent **/ @@ -103,12 +97,12 @@ DxeRuntimePciExpressLibVirtualNotify ( } /** - The constructor function caches the PCI Express Base Address and creates a + The constructor function caches the PCI Express Base Address and creates a Set Virtual Address Map event to convert physical address to virtual addresses. - + @param ImageHandle The firmware allocated handle for the EFI image. @param SystemTable A pointer to the EFI System Table. - + @retval EFI_SUCCESS The constructor completed successfully. @retval Other value The constructor did not complete successfully. @@ -130,12 +124,11 @@ DxeRuntimePciExpressLibConstructor ( // // Register SetVirtualAddressMap () notify function // - Status = gBS->CreateEventEx ( - EVT_NOTIFY_SIGNAL, + Status = gBS->CreateEvent ( + EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE, TPL_NOTIFY, DxeRuntimePciExpressLibVirtualNotify, NULL, - &gEfiEventVirtualAddressChangeGuid, &mDxeRuntimePciExpressLibVirtualNotifyEvent ); ASSERT_EFI_ERROR (Status); @@ -144,12 +137,12 @@ DxeRuntimePciExpressLibConstructor ( } /** - The destructor function frees any allocated buffers and closes the Set Virtual + The destructor function frees any allocated buffers and closes the Set Virtual Address Map event. - + @param ImageHandle The firmware allocated handle for the EFI image. @param SystemTable A pointer to the EFI System Table. - + @retval EFI_SUCCESS The destructor completed successfully. @retval Other value The destructor did not complete successfully. @@ -164,7 +157,7 @@ DxeRuntimePciExpressLibDestructor ( EFI_STATUS Status; // - // If one or more PCI devices have been registered for runtime access, then + // If one or more PCI devices have been registered for runtime access, then // free the registration table. // if (mDxeRuntimePciExpressLibRegistrationTable != NULL) { @@ -182,10 +175,10 @@ DxeRuntimePciExpressLibDestructor ( /** Gets the base address of PCI Express. - + This internal functions retrieves PCI Express Base Address via a PCD entry PcdPciExpressBaseAddress. - + @param Address The address that encodes the PCI Bus, Device, Function and Register. @return The base address of PCI Express. @@ -247,26 +240,26 @@ GetPciExpressAddress ( CpuBreakpoint(); // - // Return the physical address + // Return the physical address // return Address; } /** - 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 associated with that PCI device may be accessed after SetVirtualAddressMap() + + 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 The 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. @@ -305,7 +298,7 @@ PciExpressRegisterForRuntimeAccess ( Address = GetPciExpressAddress (Address & 0x0ffff000); // - // See if Address has already been registerd for runtime access + // See if Address has already been registered for runtime access // for (Index = 0; Index < mDxeRuntimePciExpressLibNumberOfRuntimeRanges; Index++) { if (mDxeRuntimePciExpressLibRegistrationTable[Index].PhysicalAddress == Address) { @@ -334,8 +327,8 @@ PciExpressRegisterForRuntimeAccess ( // Grow the size of the registration table // NewTable = ReallocateRuntimePool ( - (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 0) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE), - (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 1) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE), + (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 0) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE), + (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 1) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE), mDxeRuntimePciExpressLibRegistrationTable ); if (NewTable == NULL) { @@ -1463,7 +1456,7 @@ PciExpressBitFieldAndThenOr32 ( Size into the buffer specified by Buffer. This function only allows the PCI configuration registers from a single PCI function to be read. Size is returned. When possible 32-bit PCI configuration read cycles are used to read - from StartAdress to StartAddress + Size. Due to alignment restrictions, 8-bit + from StartAddress to StartAddress + Size. Due to alignment restrictions, 8-bit and 16-bit PCI configuration read cycles may be used at the beginning and the end of the range. @@ -1566,7 +1559,7 @@ PciExpressReadBuffer ( Size from the buffer specified by Buffer. This function only allows the PCI configuration registers from a single PCI function to be written. Size is returned. When possible 32-bit PCI configuration write cycles are used to - write from StartAdress to StartAddress + Size. Due to alignment restrictions, + write from StartAddress to StartAddress + Size. Due to alignment restrictions, 8-bit and 16-bit PCI configuration write cycles may be used at the beginning and the end of the range. |