--- /dev/null
+/** @file\r
+ I/O Library.\r
+\r
+ Copyright (c) 2006, Intel Corporation<BR>\r
+ All rights reserved. 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
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+ Module Name: IoLib.c\r
+\r
+**/\r
+\r
+/**\r
+ Reads an 8-bit I/O port.\r
+\r
+ Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.\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
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+IoRead8 (\r
+ IN UINTN Port\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+\r
+ return CpuIo->IoRead8 (PeiServices, CpuIo, (UINT64) Port);\r
+}\r
+\r
+/**\r
+ Writes an 8-bit I/O port.\r
+\r
+ Writes the 8-bit I/O port specified by Port with the value specified by Value\r
+ and returns Value. This function must guarantee that all I/O read and write\r
+ operations are 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 Value The value to write to the I/O port.\r
+\r
+ @return The value written the I/O port.\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+IoWrite8 (\r
+ IN UINTN Port,\r
+ IN UINT8 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+\r
+ CpuIo->IoWrite8 (PeiServices, CpuIo, (UINT64) Port, Value);\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Reads a 16-bit I/O port.\r
+\r
+ Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.\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
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+IoRead16 (\r
+ IN UINTN Port\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Port & 1) == 0);\r
+ return CpuIo->IoRead16 (PeiServices, CpuIo, (UINT64) Port);\r
+}\r
+\r
+/**\r
+ Writes a 16-bit I/O port.\r
+\r
+ Writes the 16-bit I/O port specified by Port with the value specified by Value\r
+ and returns Value. This function must guarantee that all I/O read and write\r
+ operations are 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 Value The value to write to the I/O port.\r
+\r
+ @return The value written the I/O port.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+IoWrite16 (\r
+ IN UINTN Port,\r
+ IN UINT16 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Port & 1) == 0);\r
+ CpuIo->IoWrite16 (PeiServices, CpuIo, (UINT64) Port, Value);\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Reads a 32-bit I/O port.\r
+\r
+ Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.\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
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+IoRead32 (\r
+ IN UINTN Port\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Port & 3) == 0);\r
+ return CpuIo->IoRead32 (PeiServices, CpuIo, (UINT64) Port);\r
+}\r
+\r
+/**\r
+ Writes a 32-bit I/O port.\r
+\r
+ Writes the 32-bit I/O port specified by Port with the value specified by Value\r
+ and returns Value. This function must guarantee that all I/O read and write\r
+ operations are 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 Value The value to write to the I/O port.\r
+\r
+ @return The value written the I/O port.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+IoWrite32 (\r
+ IN UINTN Port,\r
+ IN UINT32 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Port & 3) == 0);\r
+ CpuIo->IoWrite32 (PeiServices, CpuIo, (UINT64) Port, Value);\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Reads a 64-bit I/O port.\r
+\r
+ Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.\r
+ This function must guarantee that all I/O read and write operations are\r
+ serialized.\r
+\r
+ If 64-bit I/O port operations are not supported, then ASSERT().\r
+\r
+ @param Port The I/O port to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+IoRead64 (\r
+ IN UINTN Port\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Port & 7) == 0);\r
+ return CpuIo->IoRead64 (PeiServices, CpuIo, (UINT64) Port);\r
+}\r
+\r
+/**\r
+ Writes a 64-bit I/O port.\r
+\r
+ Writes the 64-bit I/O port specified by Port with the value specified by Value\r
+ and returns Value. This function must guarantee that all I/O read and write\r
+ operations are serialized.\r
+\r
+ If 64-bit I/O port operations are not supported, then ASSERT().\r
+\r
+ @param Port The I/O port to write.\r
+ @param Value The value to write to the I/O port.\r
+\r
+ @return The value written the I/O port.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+IoWrite64 (\r
+ IN UINTN Port,\r
+ IN UINT64 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Port is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Port & 7) == 0);\r
+ CpuIo->IoWrite64 (PeiServices, CpuIo, (UINT64) Port, Value);\r
+ return Value;;\r
+}\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
+MmioRead8 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+\r
+ return CpuIo->MemRead8 (PeiServices, CpuIo, (UINT64) Address);\r
+}\r
+\r
+/**\r
+ Writes an 8-bit MMIO register.\r
+\r
+ Writes the 8-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 8-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT8\r
+EFIAPI\r
+MmioWrite8 (\r
+ IN UINTN Address,\r
+ IN UINT8 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+\r
+ CpuIo->MemWrite8 (PeiServices, CpuIo, (UINT64) Address, Value);\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
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+MmioRead16 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Address & 1) == 0);\r
+ return CpuIo->MemRead16 (PeiServices, CpuIo, (UINT64) Address);\r
+\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
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT16\r
+EFIAPI\r
+MmioWrite16 (\r
+ IN UINTN Address,\r
+ IN UINT16 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 16-bit boundary.\r
+ //\r
+ ASSERT ((Address & 1) == 0);\r
+ CpuIo->MemWrite16 (PeiServices, CpuIo, (UINT64) 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
+\r
+ @param Address The MMIO register to read.\r
+\r
+ @return The value read.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+MmioRead32 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Address & 3) == 0);\r
+ return CpuIo->MemRead32 (PeiServices, CpuIo, (UINT64) Address);\r
+\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
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+MmioWrite32 (\r
+ IN UINTN Address,\r
+ IN UINT32 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 32-bit boundary.\r
+ //\r
+ ASSERT ((Address & 3) == 0);\r
+ CpuIo->MemWrite32 (PeiServices, CpuIo, (UINT64) Address, Value);\r
+ return Value;\r
+}\r
+\r
+/**\r
+ Reads a 64-bit MMIO register.\r
+\r
+ Reads the 64-bit MMIO register specified by Address. The 64-bit read value is\r
+ returned. This function must guarantee that all MMIO read and write\r
+ operations are serialized.\r
+\r
+ If 64-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
+UINT64\r
+EFIAPI\r
+MmioRead64 (\r
+ IN UINTN Address\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Address & 7) == 0);\r
+ return CpuIo->MemRead64 (PeiServices, CpuIo, (UINT64) Address);\r
+\r
+}\r
+\r
+/**\r
+ Writes a 64-bit MMIO register.\r
+\r
+ Writes the 64-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 64-bit MMIO register operations are not supported, then ASSERT().\r
+\r
+ @param Address The MMIO register to write.\r
+ @param Value The value to write to the MMIO register.\r
+\r
+**/\r
+UINT64\r
+EFIAPI\r
+MmioWrite64 (\r
+ IN UINTN Address,\r
+ IN UINT64 Value\r
+ )\r
+{\r
+ EFI_PEI_SERVICES **PeiServices;\r
+ EFI_PEI_CPU_IO_PPI *CpuIo;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ CpuIo = (*PeiServices)->CpuIo;\r
+ ASSERT (CpuIo != NULL);\r
+ //\r
+ // Make sure Address is aligned on a 64-bit boundary.\r
+ //\r
+ ASSERT ((Address & 7) == 0);\r
+ CpuIo->MemWrite64 (PeiServices, CpuIo, (UINT64) Address, Value);\r
+ return Value;\r
+}\r
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