MdePkg/SmmIoLibSmmCpuIo2: Add new Fifo routines in IoLib class

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Leo Duran  <leo.duran@amd.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

diff --git a/MdePkg/Library/SmmIoLibSmmCpuIo2/IoLib.c b/MdePkg/Library/SmmIoLibSmmCpuIo2/IoLib.c
index 7c8a60384c49ce73495136a551f32084049ddb7f..0279bde27eb385aa99a8c65037de4e8f27e7f176 100644 (file)
--- a/MdePkg/Library/SmmIoLibSmmCpuIo2/IoLib.c
+++ b/MdePkg/Library/SmmIoLibSmmCpuIo2/IoLib.c
@@ -4,6 +4,8 @@
   are based on EFI_CPU_IO_PROTOCOL.\r
   \r
   Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r
   are based on EFI_CPU_IO_PROTOCOL.\r
   \r
   Copyright (c) 2009 - 2010, 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
   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


@@ -366,6 +368,220 @@ IoWrite64 (
   return IoWriteWorker (Port, SMM_IO_UINT64, Value);\r
 }\r
 \r
   return IoWriteWorker (Port, SMM_IO_UINT64, Value);\r
 }\r
 \r

+/**\r
+  Reads an 8-bit I/O port fifo into a block of memory.\r
+\r
+  Reads the 8-bit I/O fifo port specified by Port.\r
+  The port is read Count times, and the read data is\r
+  stored in the provided Buffer.\r
+\r
+  This function must guarantee that all I/O read and write operations are\r
+  serialized.\r
+\r
+  If 8-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to read.\r
+  @param  Count   The number of times to read I/O port.\r
+  @param  Buffer  The buffer to store the read data into.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoReadFifo8 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  OUT     VOID                      *Buffer\r
+  )\r
+{\r
+  UINT8 *Buffer8;\r
+\r
+  Buffer8 = (UINT8 *)Buffer;\r
+  while (Count--) {\r
+    *Buffer8++ = IoRead8 (Port);\r
+  }\r
+}\r
+\r
+/**\r
+  Writes a block of memory into an 8-bit I/O port fifo.\r
+\r
+  Writes the 8-bit I/O fifo port specified by Port.\r
+  The port is written Count times, and the write data is\r
+  retrieved from the provided Buffer.\r
+\r
+  This function must guarantee that all I/O write and write operations are\r
+  serialized.\r
+\r
+  If 8-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to write.\r
+  @param  Count   The number of times to write I/O port.\r
+  @param  Buffer  The buffer to retrieve the write data from.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoWriteFifo8 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  IN      VOID                      *Buffer\r
+  )\r
+{\r
+  UINT8 *Buffer8;\r
+\r
+  Buffer8 = (UINT8 *)Buffer;\r
+  while (Count--) {\r
+    IoWrite8 (Port, *Buffer8++);\r
+  }\r
+}\r
+\r
+/**\r
+  Reads a 16-bit I/O port fifo into a block of memory.\r
+\r
+  Reads the 16-bit I/O fifo port specified by Port.\r
+  The port is read Count times, and the read data is\r
+  stored in the provided Buffer.\r
+\r
+  This function must guarantee that all I/O read and write operations are\r
+  serialized.\r
+\r
+  If 16-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to read.\r
+  @param  Count   The number of times to read I/O port.\r
+  @param  Buffer  The buffer to store the read data into.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoReadFifo16 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  OUT     VOID                      *Buffer\r
+  )\r
+{\r
+  UINT16 *Buffer16;\r
+\r
+  //\r
+  // Make sure Port is aligned on a 16-bit boundary.\r
+  //\r
+  ASSERT ((Port & 1) == 0);\r
+  Buffer16 = (UINT16 *)Buffer;\r
+  while (Count--) {\r
+    *Buffer16++ = IoRead16 (Port);\r
+  }\r
+}\r
+\r
+/**\r
+  Writes a block of memory into a 16-bit I/O port fifo.\r
+\r
+  Writes the 16-bit I/O fifo port specified by Port.\r
+  The port is written Count times, and the write data is\r
+  retrieved from the provided Buffer.\r
+\r
+  This function must guarantee that all I/O write and write operations are\r
+  serialized.\r
+\r
+  If 16-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to write.\r
+  @param  Count   The number of times to write I/O port.\r
+  @param  Buffer  The buffer to retrieve the write data from.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoWriteFifo16 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  IN      VOID                      *Buffer\r
+  )\r
+{\r
+  UINT16 *Buffer16;\r
+\r
+  //\r
+  // Make sure Port is aligned on a 16-bit boundary.\r
+  //\r
+  ASSERT ((Port & 1) == 0);\r
+  Buffer16 = (UINT16 *)Buffer;\r
+  while (Count--) {\r
+    IoWrite16 (Port, *Buffer16++);\r
+  }\r
+}\r
+\r
+/**\r
+  Reads a 32-bit I/O port fifo into a block of memory.\r
+\r
+  Reads the 32-bit I/O fifo port specified by Port.\r
+  The port is read Count times, and the read data is\r
+  stored in the provided Buffer.\r
+\r
+  This function must guarantee that all I/O read and write operations are\r
+  serialized.\r
+\r
+  If 32-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to read.\r
+  @param  Count   The number of times to read I/O port.\r
+  @param  Buffer  The buffer to store the read data into.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoReadFifo32 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  OUT     VOID                      *Buffer\r
+  )\r
+{\r
+  UINT32 *Buffer32;\r
+\r
+  //\r
+  // Make sure Port is aligned on a 32-bit boundary.\r
+  //\r
+  ASSERT ((Port & 3) == 0);\r
+  Buffer32 = (UINT32 *)Buffer;\r
+  while (Count--) {\r
+    *Buffer32++ = IoRead32 (Port);\r
+  }\r
+}\r
+\r
+/**\r
+  Writes a block of memory into a 32-bit I/O port fifo.\r
+\r
+  Writes the 32-bit I/O fifo port specified by Port.\r
+  The port is written Count times, and the write data is\r
+  retrieved from the provided Buffer.\r
+\r
+  This function must guarantee that all I/O write and write operations are\r
+  serialized.\r
+\r
+  If 32-bit I/O port operations are not supported, then ASSERT().\r
+\r
+  @param  Port    The I/O port to write.\r
+  @param  Count   The number of times to write I/O port.\r
+  @param  Buffer  The buffer to retrieve the write data from.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoWriteFifo32 (\r
+  IN      UINTN                     Port,\r
+  IN      UINTN                     Count,\r
+  IN      VOID                      *Buffer\r
+  )\r
+{\r
+  UINT32 *Buffer32;\r
+\r
+  //\r
+  // Make sure Port is aligned on a 32-bit boundary.\r
+  //\r
+  ASSERT ((Port & 3) == 0);\r
+  Buffer32 = (UINT32 *)Buffer;\r
+  while (Count--) {\r
+    IoWrite32 (Port, *Buffer32++);\r
+  }\r
+}\r
+\r

 /**\r
   Reads an 8-bit MMIO register.\r
 \r
 /**\r
   Reads an 8-bit MMIO register.\r
 \r