MdePkg: Support IoFifo for Tdx guest in BaseIoLibIntrinsic

[mirror_edk2.git] / MdePkg / Library / BaseIoLibIntrinsic / IoLibSev.h

diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h b/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h
new file mode 100644 (file)
index 0000000..6d7cafc
--- /dev/null
+++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h
@@ -0,0 +1,166 @@
+/** @file\r
+  Header file for SEV IO library.\r
+\r
+  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>\r
+   SPDX-License-Identifier: BSD-2-Clause-Patent\r
+**/\r
+\r
+#ifndef IOLIB_SEV_H_\r
+#define IOLIB_SEV_H_\r
+\r
+#include <Base.h>\r
+\r
+#include <Library/BaseLib.h>\r
+#include <Library/DebugLib.h>\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
+SevIoReadFifo8 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  OUT     VOID   *Buffer\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
+SevIoWriteFifo8 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  IN      VOID   *Buffer\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
+SevIoReadFifo16 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  OUT     VOID   *Buffer\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
+SevIoWriteFifo16 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  IN      VOID   *Buffer\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
+SevIoReadFifo32 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  OUT     VOID   *Buffer\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
+SevIoWriteFifo32 (\r
+  IN      UINTN  Port,\r
+  IN      UINTN  Count,\r
+  IN      VOID   *Buffer\r
+  );\r
+\r
+#endif\r