mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-24 11:45:27 +01:00
1779 lines
62 KiB
C
1779 lines
62 KiB
C
/** @file
|
|
PCI CF8 Library functions that use I/O ports 0xCF8 and 0xCFC to perform PCI Configuration cycles.
|
|
Layers on top of an I/O Library instance.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
|
|
#include <Base.h>
|
|
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/PciCf8Lib.h>
|
|
#include <Library/IoLib.h>
|
|
#include <Library/DebugLib.h>
|
|
|
|
//
|
|
// Declare I/O Ports used to perform PCI Confguration Cycles
|
|
//
|
|
#define PCI_CONFIGURATION_ADDRESS_PORT 0xCF8
|
|
#define PCI_CONFIGURATION_DATA_PORT 0xCFC
|
|
|
|
/**
|
|
Convert a PCI Library address to PCI CF8 formatted address.
|
|
|
|
Declare macro to convert PCI Library address to PCI CF8 formatted address.
|
|
Bit fields of PCI Library and CF8 formatted address is as follows:
|
|
PCI Library formatted address CF8 Formatted Address
|
|
============================= ======================
|
|
Bits 00..11 Register Bits 00..07 Register
|
|
Bits 12..14 Function Bits 08..10 Function
|
|
Bits 15..19 Device Bits 11..15 Device
|
|
Bits 20..27 Bus Bits 16..23 Bus
|
|
Bits 28..31 Reserved(MBZ) Bits 24..30 Reserved(MBZ)
|
|
Bits 31..31 Must be 1
|
|
|
|
@param A The address to convert.
|
|
|
|
@retval The coverted address.
|
|
|
|
**/
|
|
#define PCI_TO_CF8_ADDRESS(A) \
|
|
((UINT32) ((((A) >> 4) & 0x00ffff00) | ((A) & 0xfc) | 0x80000000))
|
|
|
|
/**
|
|
Assert the validity of a PCI CF8 address. A valid PCI CF8 address should contain 1's
|
|
only in the low 28 bits, excluding bits 08..11.
|
|
|
|
@param A The address to validate.
|
|
@param M Additional bits to assert to be zero.
|
|
|
|
**/
|
|
#define ASSERT_INVALID_PCI_ADDRESS(A,M) \
|
|
ASSERT (((A) & (~0xffff0ff | (M))) == 0)
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8RegisterForRuntimeAccess (
|
|
IN UINTN Address
|
|
)
|
|
{
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
return RETURN_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The address that encodes the PCI Bus, Device, Function and
|
|
Register.
|
|
|
|
@return The read value from the PCI configuration register.
|
|
|
|
**/
|
|
UINT8
|
|
EFIAPI
|
|
PciCf8Read8 (
|
|
IN UINTN Address
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoRead8 (PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3));
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Write8 (
|
|
IN UINTN Address,
|
|
IN UINT8 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoWrite8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Or8 (
|
|
IN UINTN Address,
|
|
IN UINT8 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoOr8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8And8 (
|
|
IN UINTN Address,
|
|
IN UINT8 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAnd8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit
|
|
value, followed 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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8AndThenOr8 (
|
|
IN UINTN Address,
|
|
IN UINT8 AndData,
|
|
IN UINT8 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAndThenOr8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldRead8 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldRead8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
StartBit,
|
|
EndBit
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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 The new value of the bit field.
|
|
|
|
@return The value written back to the PCI configuration register.
|
|
|
|
**/
|
|
UINT8
|
|
EFIAPI
|
|
PciCf8BitFieldWrite8 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT8 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldWrite8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
StartBit,
|
|
EndBit,
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldOr8 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT8 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldOr8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
StartBit,
|
|
EndBit,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAnd8 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT8 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAnd8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
StartBit,
|
|
EndBit,
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAndThenOr8(
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT8 AndData,
|
|
IN UINT8 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT8 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 0);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAndThenOr8 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 3),
|
|
StartBit,
|
|
EndBit,
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The address that encodes the PCI Bus, Device, Function and
|
|
Register.
|
|
|
|
@return The read value from the PCI configuration register.
|
|
|
|
**/
|
|
UINT16
|
|
EFIAPI
|
|
PciCf8Read16 (
|
|
IN UINTN Address
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoRead16 (PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2));
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Write16 (
|
|
IN UINTN Address,
|
|
IN UINT16 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoWrite16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Or16 (
|
|
IN UINTN Address,
|
|
IN UINT16 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoOr16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8And16 (
|
|
IN UINTN Address,
|
|
IN UINT16 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAnd16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8AndThenOr16 (
|
|
IN UINTN Address,
|
|
IN UINT16 AndData,
|
|
IN UINT16 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAndThenOr16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldRead16 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldRead16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
StartBit,
|
|
EndBit
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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 The new value of the bit field.
|
|
|
|
@return The value written back to the PCI configuration register.
|
|
|
|
**/
|
|
UINT16
|
|
EFIAPI
|
|
PciCf8BitFieldWrite16 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT16 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldWrite16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
StartBit,
|
|
EndBit,
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldOr16 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT16 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldOr16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
StartBit,
|
|
EndBit,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAnd16 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT16 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAnd16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
StartBit,
|
|
EndBit,
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAndThenOr16(
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT16 AndData,
|
|
IN UINT16 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT16 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 1);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAndThenOr16 (
|
|
PCI_CONFIGURATION_DATA_PORT + (UINT16)(Address & 2),
|
|
StartBit,
|
|
EndBit,
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The address that encodes the PCI Bus, Device, Function and
|
|
Register.
|
|
|
|
@return The read value from the PCI configuration register.
|
|
|
|
**/
|
|
UINT32
|
|
EFIAPI
|
|
PciCf8Read32 (
|
|
IN UINTN Address
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoRead32 (PCI_CONFIGURATION_DATA_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Write32 (
|
|
IN UINTN Address,
|
|
IN UINT32 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoWrite32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8Or32 (
|
|
IN UINTN Address,
|
|
IN UINT32 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoOr32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8And32 (
|
|
IN UINTN Address,
|
|
IN UINT32 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAnd32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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().
|
|
If the register specified by Address >= 0x100, then ASSERT().
|
|
|
|
@param Address The 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
|
|
PciCf8AndThenOr32 (
|
|
IN UINTN Address,
|
|
IN UINT32 AndData,
|
|
IN UINT32 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoAndThenOr32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldRead32 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldRead32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
StartBit,
|
|
EndBit
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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 The new value of the bit field.
|
|
|
|
@return The value written back to the PCI configuration register.
|
|
|
|
**/
|
|
UINT32
|
|
EFIAPI
|
|
PciCf8BitFieldWrite32 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT32 Value
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldWrite32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
StartBit,
|
|
EndBit,
|
|
Value
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldOr32 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT32 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldOr32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
StartBit,
|
|
EndBit,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAnd32 (
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT32 AndData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAnd32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
StartBit,
|
|
EndBit,
|
|
AndData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by Address >= 0x100, 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 The 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
|
|
PciCf8BitFieldAndThenOr32(
|
|
IN UINTN Address,
|
|
IN UINTN StartBit,
|
|
IN UINTN EndBit,
|
|
IN UINT32 AndData,
|
|
IN UINT32 OrData
|
|
)
|
|
{
|
|
BOOLEAN InterruptState;
|
|
UINT32 AddressPort;
|
|
UINT32 Result;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (Address, 3);
|
|
InterruptState = SaveAndDisableInterrupts ();
|
|
AddressPort = IoRead32 (PCI_CONFIGURATION_ADDRESS_PORT);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, PCI_TO_CF8_ADDRESS (Address));
|
|
Result = IoBitFieldAndThenOr32 (
|
|
PCI_CONFIGURATION_DATA_PORT,
|
|
StartBit,
|
|
EndBit,
|
|
AndData,
|
|
OrData
|
|
);
|
|
IoWrite32 (PCI_CONFIGURATION_ADDRESS_PORT, AddressPort);
|
|
SetInterruptState (InterruptState);
|
|
return Result;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by StartAddress >= 0x100, then ASSERT().
|
|
If ((StartAddress & 0xFFF) + Size) > 0x100, then ASSERT().
|
|
If Size > 0 and Buffer is NULL, then ASSERT().
|
|
|
|
@param StartAddress The starting address that encodes the PCI Bus, Device,
|
|
Function and Register.
|
|
@param Size The size in bytes of the transfer.
|
|
@param Buffer The pointer to a buffer receiving the data read.
|
|
|
|
@return Size read from StartAddress.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
PciCf8ReadBuffer (
|
|
IN UINTN StartAddress,
|
|
IN UINTN Size,
|
|
OUT VOID *Buffer
|
|
)
|
|
{
|
|
UINTN ReturnValue;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (StartAddress, 0);
|
|
ASSERT (((StartAddress & 0xFFF) + Size) <= 0x100);
|
|
|
|
if (Size == 0) {
|
|
return Size;
|
|
}
|
|
|
|
ASSERT (Buffer != NULL);
|
|
|
|
//
|
|
// Save Size for return
|
|
//
|
|
ReturnValue = Size;
|
|
|
|
if ((StartAddress & 1) != 0) {
|
|
//
|
|
// Read a byte if StartAddress is byte aligned
|
|
//
|
|
*(volatile UINT8 *)Buffer = PciCf8Read8 (StartAddress);
|
|
StartAddress += sizeof (UINT8);
|
|
Size -= sizeof (UINT8);
|
|
Buffer = (UINT8*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT16) && (StartAddress & 2) != 0) {
|
|
//
|
|
// Read a word if StartAddress is word aligned
|
|
//
|
|
WriteUnaligned16 ((UINT16 *)Buffer, (UINT16) PciCf8Read16 (StartAddress));
|
|
|
|
StartAddress += sizeof (UINT16);
|
|
Size -= sizeof (UINT16);
|
|
Buffer = (UINT16*)Buffer + 1;
|
|
}
|
|
|
|
while (Size >= sizeof (UINT32)) {
|
|
//
|
|
// Read as many double words as possible
|
|
//
|
|
WriteUnaligned32 ((UINT32 *)Buffer, (UINT32) PciCf8Read32 (StartAddress));
|
|
StartAddress += sizeof (UINT32);
|
|
Size -= sizeof (UINT32);
|
|
Buffer = (UINT32*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT16)) {
|
|
//
|
|
// Read the last remaining word if exist
|
|
//
|
|
WriteUnaligned16 ((UINT16 *)Buffer, (UINT16) PciCf8Read16 (StartAddress));
|
|
StartAddress += sizeof (UINT16);
|
|
Size -= sizeof (UINT16);
|
|
Buffer = (UINT16*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT8)) {
|
|
//
|
|
// Read the last remaining byte if exist
|
|
//
|
|
*(volatile UINT8 *)Buffer = PciCf8Read8 (StartAddress);
|
|
}
|
|
|
|
return ReturnValue;
|
|
}
|
|
|
|
/**
|
|
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 the register specified by StartAddress >= 0x100, then ASSERT().
|
|
If ((StartAddress & 0xFFF) + Size) > 0x100, then ASSERT().
|
|
If Size > 0 and Buffer is NULL, then ASSERT().
|
|
|
|
@param StartAddress The starting address that encodes the PCI Bus, Device,
|
|
Function and Register.
|
|
@param Size The size in bytes of the transfer.
|
|
@param Buffer The pointer to a buffer containing the data to write.
|
|
|
|
@return Size written to StartAddress.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
PciCf8WriteBuffer (
|
|
IN UINTN StartAddress,
|
|
IN UINTN Size,
|
|
IN VOID *Buffer
|
|
)
|
|
{
|
|
UINTN ReturnValue;
|
|
|
|
ASSERT_INVALID_PCI_ADDRESS (StartAddress, 0);
|
|
ASSERT (((StartAddress & 0xFFF) + Size) <= 0x100);
|
|
|
|
if (Size == 0) {
|
|
return 0;
|
|
}
|
|
|
|
ASSERT (Buffer != NULL);
|
|
|
|
//
|
|
// Save Size for return
|
|
//
|
|
ReturnValue = Size;
|
|
|
|
if ((StartAddress & 1) != 0) {
|
|
//
|
|
// Write a byte if StartAddress is byte aligned
|
|
//
|
|
PciCf8Write8 (StartAddress, *(UINT8*)Buffer);
|
|
StartAddress += sizeof (UINT8);
|
|
Size -= sizeof (UINT8);
|
|
Buffer = (UINT8*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT16) && (StartAddress & 2) != 0) {
|
|
//
|
|
// Write a word if StartAddress is word aligned
|
|
//
|
|
PciCf8Write16 (StartAddress, ReadUnaligned16 ((UINT16*)Buffer));
|
|
StartAddress += sizeof (UINT16);
|
|
Size -= sizeof (UINT16);
|
|
Buffer = (UINT16*)Buffer + 1;
|
|
}
|
|
|
|
while (Size >= sizeof (UINT32)) {
|
|
//
|
|
// Write as many double words as possible
|
|
//
|
|
PciCf8Write32 (StartAddress, ReadUnaligned32 ((UINT32*)Buffer));
|
|
StartAddress += sizeof (UINT32);
|
|
Size -= sizeof (UINT32);
|
|
Buffer = (UINT32*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT16)) {
|
|
//
|
|
// Write the last remaining word if exist
|
|
//
|
|
PciCf8Write16 (StartAddress, ReadUnaligned16 ((UINT16*)Buffer));
|
|
StartAddress += sizeof (UINT16);
|
|
Size -= sizeof (UINT16);
|
|
Buffer = (UINT16*)Buffer + 1;
|
|
}
|
|
|
|
if (Size >= sizeof (UINT8)) {
|
|
//
|
|
// Write the last remaining byte if exist
|
|
//
|
|
PciCf8Write8 (StartAddress, *(UINT8*)Buffer);
|
|
}
|
|
|
|
return ReturnValue;
|
|
}
|