diff options
Diffstat (limited to 'MdePkg/Library/PeiIoLibCpuIo/IoLib.c')
| -rw-r--r-- | MdePkg/Library/PeiIoLibCpuIo/IoLib.c | 530 |
1 files changed, 530 insertions, 0 deletions
diff --git a/MdePkg/Library/PeiIoLibCpuIo/IoLib.c b/MdePkg/Library/PeiIoLibCpuIo/IoLib.c new file mode 100644 index 0000000000..2156f6b480 --- /dev/null +++ b/MdePkg/Library/PeiIoLibCpuIo/IoLib.c @@ -0,0 +1,530 @@ +/** @file
+ I/O Library.
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+ Module Name: IoLib.c
+
+**/
+
+/**
+ Reads an 8-bit I/O port.
+
+ Reads the 8-bit I/O port specified by Port. The 8-bit read value is returned.
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 8-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+
+ @return The value read.
+
+**/
+UINT8
+EFIAPI
+IoRead8 (
+ IN UINTN Port
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->IoRead8 (PeiServices, CpuIo, (UINT64) Port);
+}
+
+/**
+ Writes an 8-bit I/O port.
+
+ Writes the 8-bit I/O port specified by Port with the value specified by Value
+ and returns Value. This function must guarantee that all I/O read and write
+ operations are serialized.
+
+ If 8-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Value The value to write to the I/O port.
+
+ @return The value written the I/O port.
+
+**/
+UINT8
+EFIAPI
+IoWrite8 (
+ IN UINTN Port,
+ IN UINT8 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->IoWrite8 (PeiServices, CpuIo, (UINT64) Port, Value);
+ return Value;
+}
+
+/**
+ Reads a 16-bit I/O port.
+
+ Reads the 16-bit I/O port specified by Port. The 16-bit read value is returned.
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 16-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+
+ @return The value read.
+
+**/
+UINT16
+EFIAPI
+IoRead16 (
+ IN UINTN Port
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->IoRead16 (PeiServices, CpuIo, (UINT64) Port);
+}
+
+/**
+ Writes a 16-bit I/O port.
+
+ Writes the 16-bit I/O port specified by Port with the value specified by Value
+ and returns Value. This function must guarantee that all I/O read and write
+ operations are serialized.
+
+ If 16-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Value The value to write to the I/O port.
+
+ @return The value written the I/O port.
+
+**/
+UINT16
+EFIAPI
+IoWrite16 (
+ IN UINTN Port,
+ IN UINT16 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->IoWrite16 (PeiServices, CpuIo, (UINT64) Port, Value);
+ return Value;
+}
+
+/**
+ Reads a 32-bit I/O port.
+
+ Reads the 32-bit I/O port specified by Port. The 32-bit read value is returned.
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 32-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+
+ @return The value read.
+
+**/
+UINT32
+EFIAPI
+IoRead32 (
+ IN UINTN Port
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->IoRead32 (PeiServices, CpuIo, (UINT64) Port);
+}
+
+/**
+ Writes a 32-bit I/O port.
+
+ Writes the 32-bit I/O port specified by Port with the value specified by Value
+ and returns Value. This function must guarantee that all I/O read and write
+ operations are serialized.
+
+ If 32-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Value The value to write to the I/O port.
+
+ @return The value written the I/O port.
+
+**/
+UINT32
+EFIAPI
+IoWrite32 (
+ IN UINTN Port,
+ IN UINT32 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->IoWrite32 (PeiServices, CpuIo, (UINT64) Port, Value);
+ return Value;
+}
+
+/**
+ Reads a 64-bit I/O port.
+
+ Reads the 64-bit I/O port specified by Port. The 64-bit read value is returned.
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 64-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+
+ @return The value read.
+
+**/
+UINT64
+EFIAPI
+IoRead64 (
+ IN UINTN Port
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->IoRead64 (PeiServices, CpuIo, (UINT64) Port);
+}
+
+/**
+ Writes a 64-bit I/O port.
+
+ Writes the 64-bit I/O port specified by Port with the value specified by Value
+ and returns Value. This function must guarantee that all I/O read and write
+ operations are serialized.
+
+ If 64-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Value The value to write to the I/O port.
+
+ @return The value written the I/O port.
+
+**/
+UINT64
+EFIAPI
+IoWrite64 (
+ IN UINTN Port,
+ IN UINT64 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->IoWrite64 (PeiServices, CpuIo, (UINT64) Port, Value);
+ return Value;;
+}
+
+/**
+ Reads an 8-bit MMIO register.
+
+ Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
+ returned. This function must guarantee that all MMIO read and write
+ operations are serialized.
+
+ If 8-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to read.
+
+ @return The value read.
+
+**/
+UINT8
+EFIAPI
+MmioRead8 (
+ IN UINTN Address
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->MemRead8 (PeiServices, CpuIo, (UINT64) Address);
+}
+
+/**
+ Writes an 8-bit MMIO register.
+
+ Writes the 8-bit MMIO register specified by Address with the value specified
+ by Value and returns Value. This function must guarantee that all MMIO read
+ and write operations are serialized.
+
+ If 8-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to write.
+ @param Value The value to write to the MMIO register.
+
+**/
+UINT8
+EFIAPI
+MmioWrite8 (
+ IN UINTN Address,
+ IN UINT8 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->MemWrite8 (PeiServices, CpuIo, (UINT64) Address, Value);
+ return Value;
+}
+
+/**
+ Reads a 16-bit MMIO register.
+
+ Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
+ returned. This function must guarantee that all MMIO read and write
+ operations are serialized.
+
+ If 16-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to read.
+
+ @return The value read.
+
+**/
+UINT16
+EFIAPI
+MmioRead16 (
+ IN UINTN Address
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->MemRead16 (PeiServices, CpuIo, (UINT64) Address);
+
+}
+
+/**
+ Writes a 16-bit MMIO register.
+
+ Writes the 16-bit MMIO register specified by Address with the value specified
+ by Value and returns Value. This function must guarantee that all MMIO read
+ and write operations are serialized.
+
+ If 16-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to write.
+ @param Value The value to write to the MMIO register.
+
+**/
+UINT16
+EFIAPI
+MmioWrite16 (
+ IN UINTN Address,
+ IN UINT16 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->MemWrite16 (PeiServices, CpuIo, (UINT64) Address, Value);
+ return Value;
+}
+
+/**
+ Reads a 32-bit MMIO register.
+
+ Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
+ returned. This function must guarantee that all MMIO read and write
+ operations are serialized.
+
+ If 32-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to read.
+
+ @return The value read.
+
+**/
+UINT32
+EFIAPI
+MmioRead32 (
+ IN UINTN Address
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->MemRead32 (PeiServices, CpuIo, (UINT64) Address);
+
+}
+
+/**
+ Writes a 32-bit MMIO register.
+
+ Writes the 32-bit MMIO register specified by Address with the value specified
+ by Value and returns Value. This function must guarantee that all MMIO read
+ and write operations are serialized.
+
+ If 32-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to write.
+ @param Value The value to write to the MMIO register.
+
+**/
+UINT32
+EFIAPI
+MmioWrite32 (
+ IN UINTN Address,
+ IN UINT32 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->MemWrite32 (PeiServices, CpuIo, (UINT64) Address, Value);
+ return Value;
+}
+
+/**
+ Reads a 64-bit MMIO register.
+
+ Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
+ returned. This function must guarantee that all MMIO read and write
+ operations are serialized.
+
+ If 64-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to read.
+
+ @return The value read.
+
+**/
+UINT64
+EFIAPI
+MmioRead64 (
+ IN UINTN Address
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ return CpuIo->MemRead64 (PeiServices, CpuIo, (UINT64) Address);
+
+}
+
+/**
+ Writes a 64-bit MMIO register.
+
+ Writes the 64-bit MMIO register specified by Address with the value specified
+ by Value and returns Value. This function must guarantee that all MMIO read
+ and write operations are serialized.
+
+ If 64-bit MMIO register operations are not supported, then ASSERT().
+
+ @param Address The MMIO register to write.
+ @param Value The value to write to the MMIO register.
+
+**/
+UINT64
+EFIAPI
+MmioWrite64 (
+ IN UINTN Address,
+ IN UINT64 Value
+ )
+{
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_PEI_CPU_IO_PPI *CpuIo;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ CpuIo = (*PeiServices)->CpuIo;
+
+ ASSERT (CpuIo != NULL);
+
+ CpuIo->MemWrite64 (PeiServices, CpuIo, (UINT64) Address, Value);
+ return Value;
+}
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