czw., 16 maj 2019 o 16:02 Ard Biesheuvel <ard.biesheu...@linaro.org> napisał(a):
>
> On Thu, 9 May 2019 at 11:54, Marcin Wojtas <m...@semihalf.com> wrote:
> >
> > From: Ard Biesheuvel <ard.biesheu...@linaro.org>
> >
> > Implement a special version of PciExpressLib that takes the quirky
> > nature of the Synopsys Designware PCIe IP into account. In particular,
> > we need to ignores config space accesses to all devices on the first
>
> ignore
>
>
> > bus except device 0, because the broadcast nature of type 0 configuration
> > cycles will result in whatever device is in the slot to appear at each
> > of the 32 device positions.
> >
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Marcin Wojtas <m...@semihalf.com>
> > ---
> >
> > Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.inf
> > | 42 +
> > Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.c
> > | 1529 ++++++++++++++++++++
> > 2 files changed, 1571 insertions(+)
> > create mode 100644
> > Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.inf
> > create mode 100644
> > Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.c
> >
> > diff --git
> > a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.inf
> >
> > b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.inf
> > new file mode 100644
> > index 0000000..8f09820
> > --- /dev/null
> > +++
> > b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.inf
> > @@ -0,0 +1,42 @@
> > +## @file
> > +#
> > +# Copyright (c) 2017, Linaro, Ltd. All rights reserved.<BR>
> > +# Copyright (c) 2019 Marvell International Ltd. 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.
> > +#
> > +#
> > +##
> > +
> > +[Defines]
> > + INF_VERSION = 0x0001001B
> > + BASE_NAME = Armada7k8kPciExpressLib
> > + FILE_GUID = f0926204-3061-40ed-8261-2aeccc7914c9
> > + MODULE_TYPE = BASE
> > + VERSION_STRING = 1.0
> > + LIBRARY_CLASS = PciExpressLib
> > +
> > +[Sources]
> > + PciExpressLib.c
> > +
> > +[Packages]
> > + ArmPkg/ArmPkg.dec
> > + MdePkg/MdePkg.dec
> > +
> > +[LibraryClasses]
> > + BaseLib
> > + DebugLib
> > + IoLib
> > + PcdLib
> > +
> > +[Pcd]
> > + gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress ## CONSUMES
> > +
> > +[FixedPcd]
> > + gArmTokenSpaceGuid.PcdPciBusMin
> > + gArmTokenSpaceGuid.PcdPciBusMax
> > diff --git
> > a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.c
> >
> > b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.c
> > new file mode 100644
> > index 0000000..8fa2eb6
> > --- /dev/null
> > +++
> > b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kPciExpressLib/PciExpressLib.c
> > @@ -0,0 +1,1529 @@
> > +/** @file
> > +
> > + Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
> > + Copyright (c) 2019 Marvell International Ltd. 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.
> > +
> > +**/
> > +
> > +
> > +#include <Base.h>
> > +
> > +#include <Library/BaseLib.h>
> > +#include <Library/DebugLib.h>
> > +#include <Library/IoLib.h>
> > +#include <Library/PcdLib.h>
> > +#include <Library/PciExpressLib.h>
> > +
> > +/**
> > + Assert the validity of a PCI address. A valid PCI address should contain
> > 1's
> > + only in the low 28 bits.
> > +
> > + @param A The address to validate.
> > +
> > +**/
> > +#define ASSERT_INVALID_PCI_ADDRESS(A) \
> > + ASSERT (((A) & ~0xfffffff) == 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().
> > +
> > + @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
> > +PciExpressRegisterForRuntimeAccess (
> > + IN UINTN Address
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + return RETURN_UNSUPPORTED;
> > +}
> > +
> > +#define ECAM_BUS_SIZE SIZE_1MB
> > +#define ECAM_DEV_SIZE SIZE_32KB
> > +
> > +STATIC
> > +BOOLEAN
> > +IgnoreBusDeviceFunction (
> > + IN UINTN Address
> > + )
> > +{
> > + ASSERT (Address >= FixedPcdGet32 (PcdPciBusMin) * ECAM_BUS_SIZE);
> > + ASSERT (Address < (FixedPcdGet32 (PcdPciBusMax) + 1) * ECAM_BUS_SIZE);
> > +
> > + //
> > + // Type 0 configuration cycles don't contain a b/d/f specifier, and so it
> > + // is up to the bus that delivers them to ensure they only end up at the
> > + // correct device/function. Sadly, the Synopsys IP does not implement
> > this,
> > + // and so we have to ignore config space accesses for all devices on the
> > + // first bus except device 0.
> > + //
>
> This is not entirely true. Type 0 PCIe config TLPs (as opposed to
> legacy PCI bus cycles) do contain b/d/f specifiers, but the endpoint
> doesn't know its own device number, and so it responds to all of them.
>
Ok, I will update the original comment.
Thanks,
Marcin
> > + return (Address >= (FixedPcdGet32 (PcdPciBusMin) * ECAM_BUS_SIZE +
> > + ECAM_DEV_SIZE) &&
> > + Address < (FixedPcdGet32 (PcdPciBusMin) + 1) * ECAM_BUS_SIZE);
> > +}
> > +
> > +/**
> > + Gets the base address of PCI Express.
> > +
> > + This internal functions retrieves PCI Express Base Address via a PCD
> > entry
> > + PcdPciExpressBaseAddress.
> > +
> > + @return The base address of PCI Express.
> > +
> > +**/
> > +VOID*
> > +GetPciExpressBaseAddress (
> > + VOID
> > + )
> > +{
> > + return (VOID*)(UINTN) PcdGet64 (PcdPciExpressBaseAddress);
> > +}
> > +
> > +/**
> > + 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 The address that encodes the PCI Bus, Device, Function
> > and
> > + Register.
> > +
> > + @return The read value from the PCI configuration register.
> > +
> > +**/
> > +UINT8
> > +EFIAPI
> > +PciExpressRead8 (
> > + IN UINTN Address
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioRead8 ((UINTN) GetPciExpressBaseAddress () + 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 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
> > +PciExpressWrite8 (
> > + IN UINTN Address,
> > + IN UINT8 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioWrite8 ((UINTN) GetPciExpressBaseAddress () + Address, 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 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
> > +PciExpressOr8 (
> > + IN UINTN Address,
> > + IN UINT8 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioOr8 ((UINTN) GetPciExpressBaseAddress () + Address, 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 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
> > +PciExpressAnd8 (
> > + IN UINTN Address,
> > + IN UINT8 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioAnd8 ((UINTN) GetPciExpressBaseAddress () + Address, AndData);
> > +}
> > +
> > +/**
> > + 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().
> > +
> > + @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
> > +PciExpressAndThenOr8 (
> > + IN UINTN Address,
> > + IN UINT8 AndData,
> > + IN UINT8 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioAndThenOr8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + AndData,
> > + 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 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
> > +PciExpressBitFieldRead8 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioBitFieldRead8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + 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 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
> > +PciExpressBitFieldWrite8 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT8 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioBitFieldWrite8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldOr8 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT8 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioBitFieldOr8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAnd8 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT8 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioBitFieldAnd8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAndThenOr8 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT8 AndData,
> > + IN UINT8 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xff;
> > + }
> > + return MmioBitFieldAndThenOr8 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + AndData,
> > + 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 The address that encodes the PCI Bus, Device, Function
> > and
> > + Register.
> > +
> > + @return The read value from the PCI configuration register.
> > +
> > +**/
> > +UINT16
> > +EFIAPI
> > +PciExpressRead16 (
> > + IN UINTN Address
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioRead16 ((UINTN) GetPciExpressBaseAddress () + 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 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
> > +PciExpressWrite16 (
> > + IN UINTN Address,
> > + IN UINT16 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioWrite16 ((UINTN) GetPciExpressBaseAddress () + Address,
> > 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 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
> > +PciExpressOr16 (
> > + IN UINTN Address,
> > + IN UINT16 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioOr16 ((UINTN) GetPciExpressBaseAddress () + Address, 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 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
> > +PciExpressAnd16 (
> > + IN UINTN Address,
> > + IN UINT16 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioAnd16 ((UINTN) GetPciExpressBaseAddress () + Address,
> > 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 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
> > +PciExpressAndThenOr16 (
> > + IN UINTN Address,
> > + IN UINT16 AndData,
> > + IN UINT16 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioAndThenOr16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + AndData,
> > + 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 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
> > +PciExpressBitFieldRead16 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioBitFieldRead16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + 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 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
> > +PciExpressBitFieldWrite16 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT16 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioBitFieldWrite16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldOr16 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT16 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioBitFieldOr16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAnd16 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT16 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioBitFieldAnd16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAndThenOr16 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT16 AndData,
> > + IN UINT16 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffff;
> > + }
> > + return MmioBitFieldAndThenOr16 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + AndData,
> > + 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 The address that encodes the PCI Bus, Device, Function
> > and
> > + Register.
> > +
> > + @return The read value from the PCI configuration register.
> > +
> > +**/
> > +UINT32
> > +EFIAPI
> > +PciExpressRead32 (
> > + IN UINTN Address
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioRead32 ((UINTN) GetPciExpressBaseAddress () + 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 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
> > +PciExpressWrite32 (
> > + IN UINTN Address,
> > + IN UINT32 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioWrite32 ((UINTN) GetPciExpressBaseAddress () + Address,
> > 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 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
> > +PciExpressOr32 (
> > + IN UINTN Address,
> > + IN UINT32 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioOr32 ((UINTN) GetPciExpressBaseAddress () + Address, 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 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
> > +PciExpressAnd32 (
> > + IN UINTN Address,
> > + IN UINT32 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > +return MmioAnd32 ((UINTN) GetPciExpressBaseAddress () + Address, 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 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
> > +PciExpressAndThenOr32 (
> > + IN UINTN Address,
> > + IN UINT32 AndData,
> > + IN UINT32 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioAndThenOr32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + AndData,
> > + 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 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
> > +PciExpressBitFieldRead32 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioBitFieldRead32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + 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 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
> > +PciExpressBitFieldWrite32 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT32 Value
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioBitFieldWrite32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldOr32 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT32 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioBitFieldOr32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAnd32 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT32 AndData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioBitFieldAnd32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + 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 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
> > +PciExpressBitFieldAndThenOr32 (
> > + IN UINTN Address,
> > + IN UINTN StartBit,
> > + IN UINTN EndBit,
> > + IN UINT32 AndData,
> > + IN UINT32 OrData
> > + )
> > +{
> > + ASSERT_INVALID_PCI_ADDRESS (Address);
> > + if (IgnoreBusDeviceFunction (Address)) {
> > + return 0xffffffff;
> > + }
> > + return MmioBitFieldAndThenOr32 (
> > + (UINTN) GetPciExpressBaseAddress () + Address,
> > + StartBit,
> > + EndBit,
> > + AndData,
> > + 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 StartAddress 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 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 data from StartAddress.
> > +
> > +**/
> > +UINTN
> > +EFIAPI
> > +PciExpressReadBuffer (
> > + IN UINTN StartAddress,
> > + IN UINTN Size,
> > + OUT VOID *Buffer
> > + )
> > +{
> > + UINTN ReturnValue;
> > +
> > + ASSERT_INVALID_PCI_ADDRESS (StartAddress);
> > + ASSERT (((StartAddress & 0xFFF) + Size) <= 0x1000);
> > +
> > + 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 = PciExpressRead8 (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) PciExpressRead16
> > (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) PciExpressRead32
> > (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) PciExpressRead16
> > (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 = PciExpressRead8 (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 StartAddress 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 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
> > +PciExpressWriteBuffer (
> > + IN UINTN StartAddress,
> > + IN UINTN Size,
> > + IN VOID *Buffer
> > + )
> > +{
> > + UINTN ReturnValue;
> > +
> > + ASSERT_INVALID_PCI_ADDRESS (StartAddress);
> > + ASSERT (((StartAddress & 0xFFF) + Size) <= 0x1000);
> > +
> > + 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
> > + //
> > + PciExpressWrite8 (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
> > + //
> > + PciExpressWrite16 (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
> > + //
> > + PciExpressWrite32 (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
> > + //
> > + PciExpressWrite16 (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
> > + //
> > + PciExpressWrite8 (StartAddress, *(UINT8*)Buffer);
> > + }
> > +
> > + return ReturnValue;
> > +}
> > --
> > 2.7.4
> >
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#40804): https://edk2.groups.io/g/devel/message/40804
Mute This Topic: https://groups.io/mt/31553479/21656
Group Owner: devel+ow...@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
