+++ /dev/null
-/** @file\r
- Functions for access I2C MMIO register.\r
-\r
- Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
- SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include <PiPei.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/PeiServicesTablePointerLib.h>\r
-\r
-/**\r
- Reads an 8-bit MMIO register.\r
-\r
- Reads the 8-bit MMIO register specified by Address. The 8-bit read value is\r
- returned. This function must guarantee that all MMIO read and write\r
- operations are serialized.\r
-\r
- If 8-bit MMIO register operations are not supported, then ASSERT().\r
-\r
- @param Address The MMIO register to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT8\r
-EFIAPI\r
-I2CLibPeiMmioRead8 (\r
- IN UINTN Address\r
- )\r
-{\r
- UINT8 Value;\r
-\r
- Value = *(volatile UINT8*)Address;\r
- return Value;\r
-}\r
-\r
-/**\r
- Reads a 16-bit MMIO register.\r
-\r
- Reads the 16-bit MMIO register specified by Address. The 16-bit read value is\r
- returned. This function must guarantee that all MMIO read and write\r
- operations are serialized.\r
-\r
- If 16-bit MMIO register operations are not supported, then ASSERT().\r
- If Address is not aligned on a 16-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-I2CLibPeiMmioRead16 (\r
- IN UINTN Address\r
- )\r
-{\r
- UINT16 Value;\r
-\r
- ASSERT ((Address & 1) == 0);\r
- Value = *(volatile UINT16*)Address;\r
- return Value;\r
-}\r
-\r
-/**\r
- Writes a 16-bit MMIO register.\r
-\r
- Writes the 16-bit MMIO register specified by Address with the value specified\r
- by Value and returns Value. This function must guarantee that all MMIO read\r
- and write operations are serialized.\r
-\r
- If 16-bit MMIO register operations are not supported, then ASSERT().\r
- If Address is not aligned on a 16-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to write.\r
- @param Value The value to write to the MMIO register.\r
-\r
- @return Value.\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-I2CLibPeiMmioWrite16 (\r
- IN UINTN Address,\r
- IN UINT16 Value\r
- )\r
-{\r
- ASSERT ((Address & 1) == 0);\r
- *(volatile UINT16*)Address = Value;\r
- return Value;\r
-}\r
-\r
-/**\r
- Reads a 32-bit MMIO register.\r
-\r
- Reads the 32-bit MMIO register specified by Address. The 32-bit read value is\r
- returned. This function must guarantee that all MMIO read and write\r
- operations are serialized.\r
-\r
- If 32-bit MMIO register operations are not supported, then ASSERT().\r
- If Address is not aligned on a 32-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to read.\r
-\r
- @return The value read.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-I2CLibPeiMmioRead32 (\r
- IN UINTN Address\r
- )\r
-{\r
- UINT32 Value;\r
-\r
- ASSERT ((Address & 3) == 0);\r
- Value = *(volatile UINT32*)Address;\r
-\r
- return Value;\r
-}\r
-\r
-/**\r
- Writes a 32-bit MMIO register.\r
-\r
- Writes the 32-bit MMIO register specified by Address with the value specified\r
- by Value and returns Value. This function must guarantee that all MMIO read\r
- and write operations are serialized.\r
-\r
- If 32-bit MMIO register operations are not supported, then ASSERT().\r
- If Address is not aligned on a 32-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to write.\r
- @param Value The value to write to the MMIO register.\r
-\r
- @return Value.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-I2CLibPeiMmioWrite32 (\r
- IN UINTN Address,\r
- IN UINT32 Value\r
- )\r
-{\r
- ASSERT ((Address & 3) == 0);\r
- *(volatile UINT32*)Address = Value;\r
- return Value;\r
-}\r
-\r
-/**\r
- OR a 32-bit MMIO register.\r
-\r
- OR the 32-bit MMIO register specified by Address with the value specified\r
- by Value and returns Value. This function must guarantee that all MMIO read\r
- and write operations are serialized.\r
-\r
- If 32-bit MMIO register operations are not supported, then ASSERT().\r
- If Address is not aligned on a 32-bit boundary, then ASSERT().\r
-\r
- @param Address The MMIO register to write OR.\r
- @param Value The value to OR to the MMIO register.\r
-\r
- @return Value.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-I2CLibPeiMmioOr32 (\r
- IN UINTN Address,\r
- IN UINT32 OrData\r
- )\r
-{\r
- return I2CLibPeiMmioWrite32 (Address, I2CLibPeiMmioRead32(Address) | OrData);\r
-}\r
-\r
-\r