/** @file
Provides services to access PCI Configuration Space.
These functions perform PCI configuration cycles using the default PCI configuration
access method. This may use I/O ports 0xCF8 and 0xCFC to perform PCI configuration accesses,
or it may use MMIO registers relative to the PcdPciExpressBaseAddress, or it may use some
alternate access method. Modules will typically use the PCI Library for its PCI configuration
accesses. However, if a module requires a mix of PCI access methods, the PCI CF8 Library or
PCI Express Library may be used in conjunction with the PCI Library. The functionality of
these three libraries is identical. The PCI CF8 Library and PCI Express Library simply use
explicit access methods.
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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.
**/
#ifndef __PCI_LIB_H__
#define __PCI_LIB_H__
/**
Macro that converts PCI Bus, PCI Device, PCI Function and PCI Register to an
address that can be passed to the PCI Library functions.
@param Bus PCI Bus number. Range 0..255.
@param Device PCI Device number. Range 0..31.
@param Function PCI Function number. Range 0..7.
@param Register PCI Register number. Range 0..255 for PCI. Range 0..4095
for PCI Express.
@return The encoded PCI address.
**/
#define PCI_LIB_ADDRESS(Bus,Device,Function,Register) \
(((Register) & 0xfff) | (((Function) & 0x07) << 12) | (((Device) & 0x1f) << 15) | (((Bus) & 0xff) << 20))
/**
Registers a PCI device so PCI configuration registers may be accessed after
SetVirtualAddressMap().
Registers the PCI device specified by Address so all the PCI configuration registers
associated with that PCI device may be accessed after SetVirtualAddressMap() is called.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@retval RETURN_SUCCESS The PCI device was registered for runtime access.
@retval RETURN_UNSUPPORTED An attempt was made to call this function
after ExitBootServices().
@retval RETURN_UNSUPPORTED The resources required to access the PCI device
at runtime could not be mapped.
@retval RETURN_OUT_OF_RESOURCES There are not enough resources available to
complete the registration.
**/
RETURN_STATUS
EFIAPI
PciRegisterForRuntimeAccess (
IN UINTN Address
);
/**
Reads an 8-bit PCI configuration register.
Reads and returns the 8-bit PCI configuration register specified by Address.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@return The read value from the PCI configuration register.
**/
UINT8
EFIAPI
PciRead8 (
IN UINTN Address
);
/**
Writes an 8-bit PCI configuration register.
Writes the 8-bit PCI configuration register specified by Address with the
value specified by Value. Value is returned. This function must guarantee
that all PCI read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param Value The value to write.
@return The value written to the PCI configuration register.
**/
UINT8
EFIAPI
PciWrite8 (
IN UINTN Address,
IN UINT8 Value
);
/**
Performs a bitwise OR of an 8-bit PCI configuration register with
an 8-bit value.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 8-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciOr8 (
IN UINTN Address,
IN UINT8 OrData
);
/**
Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit
value.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 8-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciAnd8 (
IN UINTN Address,
IN UINT8 AndData
);
/**
Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit
value, followed by a bitwise OR with another 8-bit value.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData,
performs a bitwise OR between the result of the AND operation and
the value specified by OrData, and writes the result to the 8-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciAndThenOr8 (
IN UINTN Address,
IN UINT8 AndData,
IN UINT8 OrData
);
/**
Reads a bit field of a PCI configuration register.
Reads the bit field in an 8-bit PCI configuration register. The bit field is
specified by the StartBit and the EndBit. The value of the bit field is
returned.
If Address > 0x0FFFFFFF, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
@param Address PCI configuration register to read.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..7.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..7.
@return The value of the bit field read from the PCI configuration register.
**/
UINT8
EFIAPI
PciBitFieldRead8 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit
);
/**
Writes a bit field to a PCI configuration register.
Writes Value to the bit field of the PCI configuration register. The bit
field is specified by the StartBit and the EndBit. All other bits in the
destination PCI configuration register are preserved. The new value of the
8-bit register is returned.
If Address > 0x0FFFFFFF, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..7.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..7.
@param Value New value of the bit field.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciBitFieldWrite8 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT8 Value
);
/**
Reads a bit field in an 8-bit PCI configuration, performs a bitwise OR, and
writes the result back to the bit field in the 8-bit port.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 8-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized. Extra left bits in OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..7.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..7.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciBitFieldOr8 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT8 OrData
);
/**
Reads a bit field in an 8-bit PCI configuration register, performs a bitwise
AND, and writes the result back to the bit field in the 8-bit register.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 8-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized. Extra left bits in AndData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..7.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..7.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciBitFieldAnd8 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT8 AndData
);
/**
Reads a bit field in an 8-bit port, performs a bitwise AND followed by a
bitwise OR, and writes the result back to the bit field in the
8-bit port.
Reads the 8-bit PCI configuration register specified by Address, performs a
bitwise AND followed by a bitwise OR between the read result and
the value specified by AndData, and writes the result to the 8-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized. Extra left bits in both AndData and
OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If StartBit is greater than 7, then ASSERT().
If EndBit is greater than 7, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..7.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..7.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT8
EFIAPI
PciBitFieldAndThenOr8 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT8 AndData,
IN UINT8 OrData
);
/**
Reads a 16-bit PCI configuration register.
Reads and returns the 16-bit PCI configuration register specified by Address.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@return The read value from the PCI configuration register.
**/
UINT16
EFIAPI
PciRead16 (
IN UINTN Address
);
/**
Writes a 16-bit PCI configuration register.
Writes the 16-bit PCI configuration register specified by Address with the
value specified by Value. Value is returned. This function must guarantee
that all PCI read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param Value The value to write.
@return The value written to the PCI configuration register.
**/
UINT16
EFIAPI
PciWrite16 (
IN UINTN Address,
IN UINT16 Value
);
/**
Performs a bitwise OR of a 16-bit PCI configuration register with
a 16-bit value.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 16-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciOr16 (
IN UINTN Address,
IN UINT16 OrData
);
/**
Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit
value.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 16-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciAnd16 (
IN UINTN Address,
IN UINT16 AndData
);
/**
Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit
value, followed a bitwise OR with another 16-bit value.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData,
performs a bitwise OR between the result of the AND operation and
the value specified by OrData, and writes the result to the 16-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciAndThenOr16 (
IN UINTN Address,
IN UINT16 AndData,
IN UINT16 OrData
);
/**
Reads a bit field of a PCI configuration register.
Reads the bit field in a 16-bit PCI configuration register. The bit field is
specified by the StartBit and the EndBit. The value of the bit field is
returned.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
@param Address PCI configuration register to read.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..15.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..15.
@return The value of the bit field read from the PCI configuration register.
**/
UINT16
EFIAPI
PciBitFieldRead16 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit
);
/**
Writes a bit field to a PCI configuration register.
Writes Value to the bit field of the PCI configuration register. The bit
field is specified by the StartBit and the EndBit. All other bits in the
destination PCI configuration register are preserved. The new value of the
16-bit register is returned.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..15.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..15.
@param Value New value of the bit field.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciBitFieldWrite16 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT16 Value
);
/**
Reads a bit field in a 16-bit PCI configuration, performs a bitwise OR, and
writes the result back to the bit field in the 16-bit port.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 16-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized. Extra left bits in OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..15.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..15.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciBitFieldOr16 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT16 OrData
);
/**
Reads a bit field in a 16-bit PCI configuration register, performs a bitwise
AND, and writes the result back to the bit field in the 16-bit register.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 16-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized. Extra left bits in AndData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..15.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..15.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciBitFieldAnd16 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT16 AndData
);
/**
Reads a bit field in a 16-bit port, performs a bitwise AND followed by a
bitwise OR, and writes the result back to the bit field in the
16-bit port.
Reads the 16-bit PCI configuration register specified by Address, performs a
bitwise AND followed by a bitwise OR between the read result and
the value specified by AndData, and writes the result to the 16-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized. Extra left bits in both AndData and
OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 16-bit boundary, then ASSERT().
If StartBit is greater than 15, then ASSERT().
If EndBit is greater than 15, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..15.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..15.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT16
EFIAPI
PciBitFieldAndThenOr16 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT16 AndData,
IN UINT16 OrData
);
/**
Reads a 32-bit PCI configuration register.
Reads and returns the 32-bit PCI configuration register specified by Address.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@return The read value from the PCI configuration register.
**/
UINT32
EFIAPI
PciRead32 (
IN UINTN Address
);
/**
Writes a 32-bit PCI configuration register.
Writes the 32-bit PCI configuration register specified by Address with the
value specified by Value. Value is returned. This function must guarantee
that all PCI read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param Value The value to write.
@return The value written to the PCI configuration register.
**/
UINT32
EFIAPI
PciWrite32 (
IN UINTN Address,
IN UINT32 Value
);
/**
Performs a bitwise OR of a 32-bit PCI configuration register with
a 32-bit value.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 32-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciOr32 (
IN UINTN Address,
IN UINT32 OrData
);
/**
Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit
value.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 32-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciAnd32 (
IN UINTN Address,
IN UINT32 AndData
);
/**
Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit
value, followed a bitwise OR with another 32-bit value.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData,
performs a bitwise OR between the result of the AND operation and
the value specified by OrData, and writes the result to the 32-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
@param Address Address that encodes the PCI Bus, Device, Function and
Register.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciAndThenOr32 (
IN UINTN Address,
IN UINT32 AndData,
IN UINT32 OrData
);
/**
Reads a bit field of a PCI configuration register.
Reads the bit field in a 32-bit PCI configuration register. The bit field is
specified by the StartBit and the EndBit. The value of the bit field is
returned.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
@param Address PCI configuration register to read.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
@return The value of the bit field read from the PCI configuration register.
**/
UINT32
EFIAPI
PciBitFieldRead32 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit
);
/**
Writes a bit field to a PCI configuration register.
Writes Value to the bit field of the PCI configuration register. The bit
field is specified by the StartBit and the EndBit. All other bits in the
destination PCI configuration register are preserved. The new value of the
32-bit register is returned.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
@param Value New value of the bit field.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciBitFieldWrite32 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT32 Value
);
/**
Reads a bit field in a 32-bit PCI configuration, performs a bitwise OR, and
writes the result back to the bit field in the 32-bit port.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise OR between the read result and the value specified by
OrData, and writes the result to the 32-bit PCI configuration register
specified by Address. The value written to the PCI configuration register is
returned. This function must guarantee that all PCI read and write operations
are serialized. Extra left bits in OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
@param OrData The value to OR with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciBitFieldOr32 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT32 OrData
);
/**
Reads a bit field in a 32-bit PCI configuration register, performs a bitwise
AND, and writes the result back to the bit field in the 32-bit register.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise AND between the read result and the value specified by AndData, and
writes the result to the 32-bit PCI configuration register specified by
Address. The value written to the PCI configuration register is returned.
This function must guarantee that all PCI read and write operations are
serialized. Extra left bits in AndData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
@param AndData The value to AND with the PCI configuration register.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciBitFieldAnd32 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT32 AndData
);
/**
Reads a bit field in a 32-bit port, performs a bitwise AND followed by a
bitwise OR, and writes the result back to the bit field in the
32-bit port.
Reads the 32-bit PCI configuration register specified by Address, performs a
bitwise AND followed by a bitwise OR between the read result and
the value specified by AndData, and writes the result to the 32-bit PCI
configuration register specified by Address. The value written to the PCI
configuration register is returned. This function must guarantee that all PCI
read and write operations are serialized. Extra left bits in both AndData and
OrData are stripped.
If Address > 0x0FFFFFFF, then ASSERT().
If Address is not aligned on a 32-bit boundary, then ASSERT().
If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
If EndBit is less than StartBit, then ASSERT().
If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().
@param Address PCI configuration register to write.
@param StartBit The ordinal of the least significant bit in the bit field.
Range 0..31.
@param EndBit The ordinal of the most significant bit in the bit field.
Range 0..31.
@param AndData The value to AND with the PCI configuration register.
@param OrData The value to OR with the result of the AND operation.
@return The value written back to the PCI configuration register.
**/
UINT32
EFIAPI
PciBitFieldAndThenOr32 (
IN UINTN Address,
IN UINTN StartBit,
IN UINTN EndBit,
IN UINT32 AndData,
IN UINT32 OrData
);
/**
Reads a range of PCI configuration registers into a caller supplied buffer.
Reads the range of PCI configuration registers specified by StartAddress and
Size into the buffer specified by Buffer. This function only allows the PCI
configuration registers from a single PCI function to be read. Size is
returned. When possible 32-bit PCI configuration read cycles are used to read
from StartAdress to StartAddress + Size. Due to alignment restrictions, 8-bit
and 16-bit PCI configuration read cycles may be used at the beginning and the
end of the range.
If StartAddress > 0x0FFFFFFF, then ASSERT().
If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().
If Size > 0 and Buffer is NULL, then ASSERT().
@param StartAddress Starting address that encodes the PCI Bus, Device,
Function and Register.
@param Size Size in bytes of the transfer.
@param Buffer Pointer to a buffer receiving the data read.
@return Size
**/
UINTN
EFIAPI
PciReadBuffer (
IN UINTN StartAddress,
IN UINTN Size,
OUT VOID *Buffer
);
/**
Copies the data in a caller supplied buffer to a specified range of PCI
configuration space.
Writes the range of PCI configuration registers specified by StartAddress and
Size from the buffer specified by Buffer. This function only allows the PCI
configuration registers from a single PCI function to be written. Size is
returned. When possible 32-bit PCI configuration write cycles are used to
write from StartAdress to StartAddress + Size. Due to alignment restrictions,
8-bit and 16-bit PCI configuration write cycles may be used at the beginning
and the end of the range.
If StartAddress > 0x0FFFFFFF, then ASSERT().
If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().
If Size > 0 and Buffer is NULL, then ASSERT().
@param StartAddress Starting address that encodes the PCI Bus, Device,
Function and Register.
@param Size Size in bytes of the transfer.
@param Buffer Pointer to a buffer containing the data to write.
@return Size written to StartAddress.
**/
UINTN
EFIAPI
PciWriteBuffer (
IN UINTN StartAddress,
IN UINTN Size,
IN VOID *Buffer
);
#endif