| 0,0 → 1,132 |
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| /*++ |
| |
| Copyright (c) 1998 Intel Corporation |
| |
| Module Name: |
| |
| hw.c |
| |
| Abstract: |
| |
| Debug library functions for Hardware IO access |
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| |
| |
| Revision History |
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| --*/ |
| |
| #include "lib.h" |
| |
| |
| EFI_STATUS |
| InitializeGlobalIoDevice ( |
| IN EFI_DEVICE_PATH *DevicePath, |
| IN EFI_GUID *Protocol, |
| IN CHAR8 *ErrorStr, |
| OUT EFI_DEVICE_IO_INTERFACE **GlobalIoFncs |
| ) |
| /*++ |
| |
| Routine Description: |
| |
| Check to see if DevicePath exists for a given Protocol. Return Error if it |
| exists. Return GlobalIoFuncs set match the DevicePath |
| |
| Arguments: |
| |
| DevicePath - to operate on |
| Protocol - to check the DevicePath against |
| ErrorStr - ASCII string to display on error |
| GlobalIoFncs - Returned with DeviceIoProtocol for the DevicePath |
| |
| Returns: |
| |
| Pass or Fail based on wether GlobalIoFncs where found |
| |
| --*/ |
| { |
| EFI_STATUS Status; |
| EFI_HANDLE Handle; |
| |
| // |
| // Check to see if this device path already has Protocol on it. |
| // if so we are loading recursivly and should exit with an error |
| // |
| Status = BS->LocateDevicePath (Protocol, &DevicePath, &Handle); |
| if (!EFI_ERROR(Status)) { |
| DEBUG ((D_INIT, "Device Already Loaded for %a device\n", ErrorStr)); |
| return EFI_LOAD_ERROR; |
| } |
| |
| Status = BS->LocateDevicePath (&DeviceIoProtocol, &DevicePath, &Handle); |
| if (!EFI_ERROR(Status)) { |
| Status = BS->HandleProtocol (Handle, &DeviceIoProtocol, (VOID*)GlobalIoFncs); |
| } |
| |
| ASSERT (!EFI_ERROR(Status)); |
| return Status; |
| } |
| |
| UINT32 |
| ReadPort ( |
| IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
| IN EFI_IO_WIDTH Width, |
| IN UINTN Port |
| ) |
| { |
| UINT32 Data; |
| EFI_STATUS Status; |
| |
| Status = GlobalIoFncs->Io.Read (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
| ASSERT(!EFI_ERROR(Status)); |
| return Data; |
| } |
| |
| UINT32 |
| WritePort ( |
| IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
| IN EFI_IO_WIDTH Width, |
| IN UINTN Port, |
| IN UINTN Data |
| ) |
| { |
| EFI_STATUS Status; |
| |
| Status = GlobalIoFncs->Io.Write (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
| ASSERT(!EFI_ERROR(Status)); |
| return (UINT32)Data; |
| } |
| |
| UINT32 |
| ReadPciConfig ( |
| IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
| IN EFI_IO_WIDTH Width, |
| IN UINTN Address |
| ) |
| { |
| UINT32 Data; |
| EFI_STATUS Status; |
| |
| Status = GlobalIoFncs->Pci.Read (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
| ASSERT(!EFI_ERROR(Status)); |
| return Data; |
| } |
| |
| UINT32 |
| WritePciConfig ( |
| IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
| IN EFI_IO_WIDTH Width, |
| IN UINTN Address, |
| IN UINTN Data |
| ) |
| { |
| EFI_STATUS Status; |
| |
| Status = GlobalIoFncs->Pci.Write (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
| ASSERT(!EFI_ERROR(Status)); |
| return (UINT32)Data; |
| } |
| |
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