IntelFrameworkModulePkg: Modify CpuIoDxe to support new IoLib library

[mirror_edk2.git] / IntelFrameworkModulePkg / Universal / CpuIoDxe / CpuIo.c

diff --git a/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c b/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
index 802b4fef2b01b679b4a3bbad02ec9133aca0205f..9db9dbe97407827b0404b0766cd7af9c5a832137 100644 (file)
--- a/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
+++ b/IntelFrameworkModulePkg/Universal/CpuIoDxe/CpuIo.c
@@ -1,8 +1,10 @@
 /** @file\r
   Uses the services of the I/O Library to produce the CPU I/O Protocol\r
 \r
-Copyright (c) 2004 - 2010, Intel Corporation                                                         \r
-All rights reserved. This program and the accompanying materials                          \r
+Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>\r
+\r
+This program and the accompanying materials                          \r
 are licensed and made available under the terms and conditions of the BSD License         \r
 which accompanies this distribution.  The full text of the license may be found at        \r
 http://opensource.org/licenses/bsd-license.php                                            \r
@@ -12,59 +14,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
 **/\r
 \r
-#include <PiDxe.h>\r
-\r
-#include <Protocol/CpuIo.h>\r
-\r
-#include <Library/BaseLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/IoLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
-\r
-#define MAX_IO_PORT_ADDRESS   0xFFFF\r
-\r
-//\r
-// Function Prototypes\r
-//\r
-EFI_STATUS\r
-EFIAPI\r
-CpuMemoryServiceRead (\r
-  IN  EFI_CPU_IO_PROTOCOL        *This,\r
-  IN  EFI_CPU_IO_PROTOCOL_WIDTH  Width,\r
-  IN  UINT64                     Address,\r
-  IN  UINTN                      Count,\r
-  OUT VOID                       *Buffer\r
-  );\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-CpuMemoryServiceWrite (\r
-  IN EFI_CPU_IO_PROTOCOL        *This,\r
-  IN EFI_CPU_IO_PROTOCOL_WIDTH  Width,\r
-  IN UINT64                     Address,\r
-  IN UINTN                      Count,\r
-  IN VOID                       *Buffer\r
-  );\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-CpuIoServiceRead (\r
-  IN  EFI_CPU_IO_PROTOCOL        *This,\r
-  IN  EFI_CPU_IO_PROTOCOL_WIDTH  Width,\r
-  IN  UINT64                     Address,\r
-  IN  UINTN                      Count,\r
-  OUT VOID                       *Buffer\r
-  );\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-CpuIoServiceWrite (\r
-  IN EFI_CPU_IO_PROTOCOL        *This,\r
-  IN EFI_CPU_IO_PROTOCOL_WIDTH  Width,\r
-  IN UINT64                     Address,\r
-  IN UINTN                      Count,\r
-  IN VOID                       *Buffer\r
-  );\r
+#include "CpuIo.h"\r
 \r
 //\r
 // Handle for the CPU I/O Protocol\r
@@ -168,7 +118,7 @@ CpuIoCheckParameter (
   //\r
   // Check to see if Width is in the valid range\r
   //\r
-  if (Width < 0 || Width >= EfiCpuIoWidthMaximum) {\r
+  if ((UINT32)Width >= EfiCpuIoWidthMaximum) {\r
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
@@ -227,8 +177,9 @@ CpuIoCheckParameter (
 \r
   //\r
   // Check to see if Buffer is aligned\r
+  // (IA-32 allows UINT64 and INT64 data types to be 32-bit aligned.)\r
   //\r
-  if (((UINTN)Buffer & (mInStride[Width] - 1)) != 0) {\r
+  if (((UINTN)Buffer & ((MIN (sizeof (UINTN), mInStride[Width])  - 1))) != 0) {\r
     return EFI_UNSUPPORTED;\r
   }\r
 \r
@@ -461,6 +412,31 @@ CpuIoServiceRead (
   InStride = mInStride[Width];\r
   OutStride = mOutStride[Width];\r
   OperationWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);\r
+\r
+  //\r
+  // Fifo operations supported for (mInStride[Width] == 0)\r
+  //\r
+  if (InStride == 0) {\r
+    switch (OperationWidth) {\r
+    case EfiCpuIoWidthUint8:\r
+      IoReadFifo8 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    case EfiCpuIoWidthUint16:\r
+      IoReadFifo16 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    case EfiCpuIoWidthUint32:\r
+      IoReadFifo32 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    default:\r
+      //\r
+      // The CpuIoCheckParameter call above will ensure that this\r
+      // path is not taken.\r
+      //\r
+      ASSERT (FALSE);\r
+      break;\r
+    }\r
+  }\r
+\r
   for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r
     if (OperationWidth == EfiCpuIoWidthUint8) {\r
       *Uint8Buffer = IoRead8 ((UINTN)Address);\r
@@ -543,6 +519,31 @@ CpuIoServiceWrite (
   InStride = mInStride[Width];\r
   OutStride = mOutStride[Width];\r
   OperationWidth = (EFI_CPU_IO_PROTOCOL_WIDTH) (Width & 0x03);\r
+\r
+  //\r
+  // Fifo operations supported for (mInStride[Width] == 0)\r
+  //\r
+  if (InStride == 0) {\r
+    switch (OperationWidth) {\r
+    case EfiCpuIoWidthUint8:\r
+      IoWriteFifo8 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    case EfiCpuIoWidthUint16:\r
+      IoWriteFifo16 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    case EfiCpuIoWidthUint32:\r
+      IoWriteFifo32 ((UINTN)Address, Count, Buffer);\r
+      return EFI_SUCCESS;\r
+    default:\r
+      //\r
+      // The CpuIoCheckParameter call above will ensure that this\r
+      // path is not taken.\r
+      //\r
+      ASSERT (FALSE);\r
+      break;\r
+    }\r
+  }\r
+\r
   for (Uint8Buffer = (UINT8 *)Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r
     if (OperationWidth == EfiCpuIoWidthUint8) {\r
       IoWrite8 ((UINTN)Address, *Uint8Buffer);\r