Re: [Linaro-uefi] Linaro-uefi Digest, Vol 30, Issue 59

27 Apr 2016

Ard,
I think you want:
 gArmPlatformTokenSpaceGuid.PcdPciIoTranslation|0xEFFF0000
 gArmPlatformTokenSpaceGuid.PcdPciMmio32Size|0x80000000
Leo
...
-----Original Message-----
From: Duran, Leo
Sent: Wednesday, April 27, 2016 4:48 PM
To: 'Ard Biesheuvel' ard.biesheuvel@linaro.org
Cc: linaro-uefi@lists.linaro.org
Subject: RE: [Linaro-uefi] Linaro-uefi Digest, Vol 30, Issue 59
Please see reply below.
Leo.
...
-----Original Message-----
From: Ard Biesheuvel [mailto:ard.biesheuvel@linaro.org]
Sent: Wednesday, April 27, 2016 3:21 PM
To: Duran, Leo leo.duran@amd.com
Cc: linaro-uefi@lists.linaro.org
Subject: Re: [Linaro-uefi] Linaro-uefi Digest, Vol 30, Issue 59
...
On 27 apr. 2016, at 22:10, Ard Biesheuvel ard.biesheuvel@linaro.org
wrote:
...
...
On 27 April 2016 at 21:29, Duran, Leo leo.duran@amd.com wrote:
Ard,

Since the 32-bit MMIO range is from 0x4000_0000  to 0xBFFF_FFFF, I'd

expect:
...
...
gArmPlatformTokenSpaceGuid.PcdPciMmio32Size|0x80000000
I stole the top 64 KB for I/O port space
Only just realized this doesn't make a whole lot of sense if we don't
program
...
this into the actual hardware.
What is the mmio range for io translation?
Legacy I/O translation is supported from 0xEFFF_0000 to 0xEFFF_FFFF
(64K window)
You may see the PCI windows (32-biit MMIO, 64-bit MMIO and I/O) listed in
AcpiTables/Dsdt.asl (PCI0._CRS_RBUF)
Leo.
...
...
...

Question: What is the meaning of "0xBFFF0000" in this declaration:

gArmPlatformTokenSpaceGuid.PcdPciIoTranslation|0xBFFF0000
That is the offset between the I/O port space and the offset in memory
where we map the MMIO range that emulates it
...

Question: What is the meaning of "16" in this declaration:

# size of the I/O port space, needed for PCI
 gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize|16
It is 16 bits worth of I/O space in the GCD map. This is simply how
UEFI (or rather PI) tracks allocations of memory and I/O space
To be honest, there is some guesswork and handwaving involved here,
since I am not entirely sure how this is supposed to work. But we need
to reserve some MMIO area so that PCI device drivers and PCI devices
that use I/O bus cycles can find each other.
Note that, while I managed to use a XHCI PCIe card with these patches,
I don't have access to any hardware that actually uses I/O BARs so
this part is mostly untested.
--
Ard.
...
...
-----Original Message-----
From: Linaro-uefi [mailto:linaro-uefi-bounces@lists.linaro.org] On
Behalf
...
Of
...
...
...
linaro-uefi-request@lists.linaro.org
Sent: Wednesday, April 27, 2016 8:18 AM
To: linaro-uefi@lists.linaro.org
Subject: Linaro-uefi Digest, Vol 30, Issue 59
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Today's Topics:

Issue with ACPI tables for Juno in UEFI (Punit Agrawal)
[PATCH 0/2] Platforms/AMD/Styx: move to the generic
PciHostBridgeDxe (Ard Biesheuvel)
[PATCH 1/2] Platforms/AMD/Styx: implement       PciHostBridgeLib
(Ard Biesheuvel)
[PATCH 2/2] Platform/AMD/Styx: move to generic PciLib   and
PciHostBridgeDxe (Ard Biesheuvel)


Message: 1
Date: Wed, 27 Apr 2016 12:04:43 +0100
From: Punit Agrawal punit.agrawal@arm.com
To: linaro-uefi@lists.linaro.org
Cc: Leif Lindholm leif.lindholm@arm.com, Steve Capper
     steve.capper@arm.com
Subject: [Linaro-uefi] Issue with ACPI tables for Juno in UEFI
Message-ID: 87potb2tys.fsf@e105922-lin.cambridge.arm.com
Content-Type: text/plain
Hi,
I ran into an issue with using ACPI with the 16.03 release of UEFI for
Juno.
The ACPI tables, do not specify the triggering (LEVEL or EDGE) and
polarity (HIGH or LOW) for legacy PCI interrupts.
The PCI legacy interrupt routing is communicated to the kernel via the
PCI Routing Table (_PRT) described in Section 6.2.13 of the ACPI
spec. In the absence of interrupt type specification, the kernel
defaults to the PCI defined values (triggering = LEVEL and polarity =
LOW) for the legacy interrupts. (Aside: Juno devicetree already
provides
...
...
...
...
the correct interrupt type to the kernel.)
On Juno r2, the GIC doesn't support interrupts with polarity = LOW.
This
...
...
...
...
in general seems to be true for all GICv2 based systems. This leads to
errors in the kernel log when booting.
On Juno r2, booting with ACPI, I get the following errors in the bootlog



[ 1.353696] genirq: Setting trigger mode 8 for irq 9 failed
(gic_set_type+0x0/0x5c)
[ 1.478286] genirq: Setting trigger mode 8 for irq 17 failed
(gic_set_type+0x0/0x5c)
[ 1.563723] genirq: Setting trigger mode 8 for irq 18 failed
(gic_set_type+0x0/0x5c)
In order to supply the interrupt type to the kernel, the firmware needs
to use a Linked resource type when specifying the interrupts in _PRT.
I am reporting the issue here in case anybody else runs into at and
wonders what's going on.
Thanks,
Punit

Message: 2
Date: Wed, 27 Apr 2016 15:16:47 +0200
From: Ard Biesheuvel ard.biesheuvel@linaro.org
To: linaro-uefi@lists.linaro.org, ricardo.salveti@linaro.org,
     leif.lindholm@linaro.org, graeme.gregory@linaro.org
Cc: leo.duran@amd.com
Subject: [Linaro-uefi] [PATCH 0/2] Platforms/AMD/Styx: move to the
     generic PciHostBridgeDxe
Message-ID:
     1461763009-23741-1-git-send-email-ard.biesheuvel@linaro.org
This supersedes the fixes I sent out yesterday and last week. The
diffstat
...
...
...
...
speaks for itself. Note that there is a dependency on 'ArmPlatformPkg:
implement CpuIo2 protocol driver specific for PCI' which I sent out
today,
...
...
...
...
and needs to go into EDK2 mainline
Ard Biesheuvel (2):
 Platforms/AMD/Styx: implement PciHostBridgeLib
 Platform/AMD/Styx: move to generic PciLib and PciHostBridgeDxe
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c
|
...
...
...
1285 ------------
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h
|
...
...
...
498 -----
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
|   54 -
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
|
...
...
...
2150 --------------------
Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc                                   |
29 +-
...
...
...
Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf                                   |
6
...
+-
...
...
...
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.c   |  196 ++
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.inf |   55 +
Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
|
...
...
...
29 +-
Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf
|    6
...
...
...
+-
10 files changed, 303 insertions(+), 4005 deletions(-)
delete mode 100644
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c
delete mode 100644
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h
delete mode 100644
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
delete mode 100644
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
create mode 100644
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.c
create mode 100644
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.inf
--
2.7.4

Message: 3
Date: Wed, 27 Apr 2016 15:16:48 +0200
From: Ard Biesheuvel ard.biesheuvel@linaro.org
To: linaro-uefi@lists.linaro.org, ricardo.salveti@linaro.org,
     leif.lindholm@linaro.org, graeme.gregory@linaro.org
Cc: leo.duran@amd.com
Subject: [Linaro-uefi] [PATCH 1/2] Platforms/AMD/Styx: implement
     PciHostBridgeLib
Message-ID:
     1461763009-23741-2-git-send-email-ard.biesheuvel@linaro.org
In preparation of moving to the generic implementation of
PciHostBridgeDxe,
supply an implementation of PciHostBridgeLib that encapsulates the
platform
...
...
...
specific parameters that describe the PCI host bridge.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org

Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc                                   |
15
...
++
...
...
...
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.c   | 196 ++++++++++++++++++++
Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBrid
...
...
...
...
geLib.inf |  55 ++++++
Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
|  15
...
...
...
++
4 files changed, 281 insertions(+)

diff --git a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
index 599e259c464f..c863413519a0 100644
--- a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
+++ b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
@@ -476,6 +476,21 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
  # PCIe Support
  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0xF0000000

gArmPlatformTokenSpaceGuid.PcdPciBusMin|0x0
gArmPlatformTokenSpaceGuid.PcdPciBusMax|0xFF

gArmPlatformTokenSpaceGuid.PcdPciIoBase|0x0
gArmPlatformTokenSpaceGuid.PcdPciIoSize|0x10000
gArmPlatformTokenSpaceGuid.PcdPciIoTranslation|0xBFFF0000

gArmPlatformTokenSpaceGuid.PcdPciMmio32Base|0x40000000
gArmPlatformTokenSpaceGuid.PcdPciMmio32Size|0x7FFF0000
gArmPlatformTokenSpaceGuid.PcdPciMmio32Translation|0x0

gArmPlatformTokenSpaceGuid.PcdPciMmio64Base|0x100000000
gArmPlatformTokenSpaceGuid.PcdPciMmio64Size|0x7F00000000
gArmPlatformTokenSpaceGuid.PcdPciMmio64Translation|0x0
## Use PCI emulation for ATA PassThru

gEfiMdeModulePkgTokenSpaceGuid.PcdAtaPassThruPciEmulation|TRUE
...
...
...
diff --git
a/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.c
b/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.c
new file mode 100644
index 000000000000..1bdb0025dee4
--- /dev/null
+++
b/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.c
@@ -0,0 +1,196 @@
+/** @file

PCI Host Bridge Library instance for AMD Seattle SOC

Copyright (c) 2016, Linaro 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 <PiDxe.h>
+#include <Library/PciHostBridgeLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>



+#include <Protocol/PciRootBridgeIo.h>
+#include <Protocol/PciHostBridgeResourceAllocation.h>



+#pragma pack(1)
+typedef struct {

ACPI_HID_DEVICE_PATH     AcpiDevicePath;
EFI_DEVICE_PATH_PROTOCOL EndDevicePath;

+} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH;
+#pragma pack ()



+STATIC EFI_PCI_ROOT_BRIDGE_DEVICE_PATH
mEfiPciRootBridgeDevicePath = {

{
{
 ACPI_DEVICE_PATH,


 ACPI_DP,


 {


   (UINT8) (sizeof(ACPI_HID_DEVICE_PATH)),


   (UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8)


 }


},
EISA_PNP_ID(0x0A08), // PCI Express
0
},

{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
 END_DEVICE_PATH_LENGTH,


 0


}
}

+};



+GLOBAL_REMOVE_IF_UNREFERENCED
+CHAR16 *mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = {

L"Mem", L"I/O", L"Bus"

+};



+/**

Return all the root bridge instances in an array.

@param Count  Return the count of root bridge instances.

@return All the root bridge instances in an array.
     The array should be passed into PciHostBridgeFreeRootBridges()


     when it's not used.



+**/
+PCI_ROOT_BRIDGE *
+EFIAPI
+PciHostBridgeGetRootBridges (

UINTN *Count
)

+{

PCI_ROOT_BRIDGE     *RootBridge;

*Count = 1;
RootBridge = AllocateZeroPool (*Count * sizeof *RootBridge);

RootBridge->Segment     = 0;

RootBridge->Supports    = EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO |
                       EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO |


                       EFI_PCI_ATTRIBUTE_ISA_IO_16 |


                       EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO |


                       EFI_PCI_ATTRIBUTE_VGA_MEMORY |


                       EFI_PCI_ATTRIBUTE_VGA_IO_16  |


                       EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;


RootBridge->Attributes  = RootBridge->Supports;

RootBridge->DmaAbove4G  = TRUE;

RootBridge->AllocationAttributes  =

EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM |

                                 EFI_PCI_HOST_BRIDGE_MEM64_DECODE ;



RootBridge->Bus.Base              = PcdGet32 (PcdPciBusMin);
RootBridge->Bus.Limit             = PcdGet32 (PcdPciBusMax);
RootBridge->Io.Base               = PcdGet64 (PcdPciIoBase);
RootBridge->Io.Limit              = PcdGet64 (PcdPciIoBase) + PcdGet64

(PcdPciIoSize) - 1;

RootBridge->Mem.Base              = PcdGet32 (PcdPciMmio32Base);
RootBridge->Mem.Limit             = PcdGet32 (PcdPciMmio32Base) +

PcdGet32 (PcdPciMmio32Size) - 1;

RootBridge->MemAbove4G.Base       = PcdGet64

(PcdPciMmio64Base);
...
...
...

RootBridge->MemAbove4G.Limit      = PcdGet64

(PcdPciMmio64Base)
...



...
...
...
PcdGet64 (PcdPciMmio64Size) - 1;


//
// No separate ranges for prefetchable and non-prefetchable BARs
//
RootBridge->PMem.Base             = 0;
RootBridge->PMem.Limit            = 0;
RootBridge->PMemAbove4G.Base      = 0;
RootBridge->PMemAbove4G.Limit     = 0;

ASSERT (FixedPcdGet64 (PcdPciMmio32Translation) == 0);
ASSERT (FixedPcdGet64 (PcdPciMmio64Translation) == 0);

RootBridge->NoExtendedConfigSpace = FALSE;

RootBridge->DevicePath = (EFI_DEVICE_PATH_PROTOCOL

*)&mEfiPciRootBridgeDevicePath;


return RootBridge;

+}



+/**

Free the root bridge instances array returned from

PciHostBridgeGetRootBridges().


@param Bridges The root bridge instances array.
@param Count   The count of the array.

+**/
+VOID
+EFIAPI
+PciHostBridgeFreeRootBridges (

PCI_ROOT_BRIDGE *Bridges,
UINTN           Count
)

+{

FreePool (Bridges);

+}



+/**

Inform the platform that the resource conflict happens.

@param HostBridgeHandle Handle of the Host Bridge.
@param Configuration    Pointer to PCI I/O and PCI memory resource
                     descriptors. The Configuration contains the resources


                     for all the root bridges. The resource for each root


                     bridge is terminated with END descriptor and an


                     additional END is appended indicating the end of the


                     entire resources. The resource descriptor field


                     values follow the description in




EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
...
...
...

                     .SubmitResources().



+**/
+VOID
+EFIAPI
+PciHostBridgeResourceConflict (

EFI_HANDLE                        HostBridgeHandle,
VOID                              *Configuration
)

+{

EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor;
UINTN                             RootBridgeIndex;
DEBUG ((EFI_D_ERROR, "PciHostBridge: Resource conflict

happens!\n"));
...
...
...


RootBridgeIndex = 0;
Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)

Configuration;
...
...
...

while (Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) {
DEBUG ((EFI_D_ERROR, "RootBridge[%d]:\n",

RootBridgeIndex++));
...
...
...
...

for (; Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR;

Descriptor++) {

 ASSERT (Descriptor->ResType <


         (sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr) /


          sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr[0])


          )


         );


 DEBUG ((EFI_D_ERROR, " %s: Length/Alignment = 0x%lx /



0x%lx\n",
...
...
...
...

         mPciHostBridgeLibAcpiAddressSpaceTypeStr[Descriptor-



ResType],
...
...

         Descriptor->AddrLen, Descriptor->AddrRangeMax


         ));


 if (Descriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {


   DEBUG ((EFI_D_ERROR, "     Granularity/SpecificFlag = %ld /



%02x%s\n",
...
...
...

           Descriptor->AddrSpaceGranularity, Descriptor->SpecificFlag,


           ((Descriptor->SpecificFlag &




EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABL
...
...
...
...
E

             ) != 0) ? L" (Prefetchable)" : L""


           ));


 }


}
//
// Skip the END descriptor for root bridge
//
ASSERT (Descriptor->Desc == ACPI_END_TAG_DESCRIPTOR);
Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)(
              (EFI_ACPI_END_TAG_DESCRIPTOR *)Descriptor + 1


              );


}

+}
diff --git
a/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.inf
b/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.inf
new file mode 100644
index 000000000000..d73017c00b48
--- /dev/null
+++
b/Platforms/AMD/Styx/Library/AmdStyxPciHostBridgeLib/AmdStyxPciHostBr
...
...
...
...
idgeLib.inf
@@ -0,0 +1,55 @@
+## @file
+#  PCI Host Bridge Library instance for AMD Seattle SOC
+#
+#  Copyright (c) 2016, Linaro 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                    = 0x00010005
BASE_NAME                      = AmdStyxPciHostBridgeLib
FILE_GUID                      = 05E7AB83-EF8D-482D-80F8-905B73377A15
MODULE_TYPE                    = BASE
VERSION_STRING                 = 1.0
LIBRARY_CLASS                  = PciHostBridgeLib


+#
+# The following information is for reference only and not required by
the
...
...
...
build
+# tools.
+#
+#  VALID_ARCHITECTURES           = AARCH64
+#



+[Sources]

AmdStyxPciHostBridgeLib.c


+[Packages]

MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
ArmPlatformPkg/ArmPlatformPkg.dec


+[LibraryClasses]

DebugLib
DevicePathLib
MemoryAllocationLib


+[FixedPcd]

gArmPlatformTokenSpaceGuid.PcdPciBusMin
gArmPlatformTokenSpaceGuid.PcdPciBusMax
gArmPlatformTokenSpaceGuid.PcdPciIoBase
gArmPlatformTokenSpaceGuid.PcdPciIoSize
gArmPlatformTokenSpaceGuid.PcdPciMmio32Base
gArmPlatformTokenSpaceGuid.PcdPciMmio32Size
gArmPlatformTokenSpaceGuid.PcdPciMmio32Translation
gArmPlatformTokenSpaceGuid.PcdPciMmio64Base
gArmPlatformTokenSpaceGuid.PcdPciMmio64Size
gArmPlatformTokenSpaceGuid.PcdPciMmio64Translation

diff --git a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
index cd0fe296d849..eb8c9a4e27ee 100644
--- a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
+++ b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
@@ -477,6 +477,21 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
  # PCIe Support
  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0xF0000000

gArmPlatformTokenSpaceGuid.PcdPciBusMin|0x0
gArmPlatformTokenSpaceGuid.PcdPciBusMax|0xFF

gArmPlatformTokenSpaceGuid.PcdPciIoBase|0x0
gArmPlatformTokenSpaceGuid.PcdPciIoSize|0x10000
gArmPlatformTokenSpaceGuid.PcdPciIoTranslation|0xBFFF0000

gArmPlatformTokenSpaceGuid.PcdPciMmio32Base|0x40000000
gArmPlatformTokenSpaceGuid.PcdPciMmio32Size|0x7FFF0000
gArmPlatformTokenSpaceGuid.PcdPciMmio32Translation|0x0

gArmPlatformTokenSpaceGuid.PcdPciMmio64Base|0x100000000
gArmPlatformTokenSpaceGuid.PcdPciMmio64Size|0x7F00000000
gArmPlatformTokenSpaceGuid.PcdPciMmio64Translation|0x0
## Use PCI emulation for ATA PassThru

gEfiMdeModulePkgTokenSpaceGuid.PcdAtaPassThruPciEmulation|TRUE
...
...
...
--
2.7.4

Message: 4
Date: Wed, 27 Apr 2016 15:16:49 +0200
From: Ard Biesheuvel ard.biesheuvel@linaro.org
To: linaro-uefi@lists.linaro.org, ricardo.salveti@linaro.org,
     leif.lindholm@linaro.org, graeme.gregory@linaro.org
Cc: leo.duran@amd.com
Subject: [Linaro-uefi] [PATCH 2/2] Platform/AMD/Styx: move to
generic
...
...
...
...
 PciLib  and PciHostBridgeDxe

Message-ID:
     1461763009-23741-3-git-send-email-ard.biesheuvel@linaro.org
Now that the dependencies (PciHostBridgeLib and ArmPciCpuIo2Dxe)
are
...
...
...
in place, we can drop the home cooked implementations of PciLib and
PciHostBridgeDxe, and move to the generic ones instead,
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org

Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c      |
1285 ---
...
...
...

Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h      |
498 ---
...
...
...
--
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
|
...
54 -
...
...
...
Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c    |
2150 --
...
...
...

Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc                     |   14 +-
Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf                     |    6 +-
Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc             |   14
+-
...
...
...
...
Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf             |    6
+-
...
...
...
...
8 files changed, 22 insertions(+), 4005 deletions(-)
diff --git
a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c
...
...
...
b/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c
deleted file mode 100644
index 66fb27be55ad..000000000000
--- a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.c
+++ /dev/null
@@ -1,1285 +0,0 @@
-/** @file

Provides the basic interfaces to abstract a PCI Host Bridge Resource

Allocation



-Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials are
-licensed and made available under the terms and conditions of the
BSD
...
...
...
...
License
-which accompanies this distribution.  The full text of the license may
be
...
...
...
...
found at
-http://opensource.org/licenses/bsd-license.php



-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS
IS"
...
...
...
...
BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
EXPRESS OR IMPLIED.



-**/



-#include "PciHostBridge.h"
-#include <IndustryStandard/Acpi50.h>



-#define AMD_PCI_PMEM64      1



-//
-// Hard code: Root Bridge Number within the host bridge
-//            Root Bridge's attribute
-//            Root Bridge's device path
-//            Root Bridge's resource aperture
-//
-UINTN RootBridgeNumber[1] = { 1 };



-#if AMD_PCI_PMEM64 // AMD_PCI_PMEM64
-//
-// Copy from MdeModulePkg\Bus\Pci\PciBusDxe\PciBus.h
-//
-#define EFI_BRIDGE_IO32_DECODE_SUPPORTED      0x0001
-#define EFI_BRIDGE_PMEM32_DECODE_SUPPORTED    0x0002
-#define EFI_BRIDGE_PMEM64_DECODE_SUPPORTED    0x0004
-#define EFI_BRIDGE_IO16_DECODE_SUPPORTED      0x0008
-#define EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED 0x0010
-#define EFI_BRIDGE_MEM64_DECODE_SUPPORTED     0x0020
-#define EFI_BRIDGE_MEM32_DECODE_SUPPORTED     0x0040
-UINT64 RootBridgeAttribute[1][1] = {

{ EFI_BRIDGE_MEM32_DECODE_SUPPORTED |

EFI_BRIDGE_IO16_DECODE_SUPPORTED |
EFI_BRIDGE_PMEM64_DECODE_SUPPORTED }
-};
-#else              // AMD_PCI_PMEM64
-UINT64 RootBridgeAttribute[1][1] = {

{ EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM }

-};
-#endif             // AMD_PCI_PMEM64



-EFI_PCI_ROOT_BRIDGE_DEVICE_PATH
mEfiPciRootBridgeDevicePath[1][1] =
...
...
...
{

{
{
 {


   {


     ACPI_DEVICE_PATH,


     ACPI_DP,


     {


       (UINT8) (sizeof(ACPI_HID_DEVICE_PATH)),


       (UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8)


     }


   },


   EISA_PNP_ID(0x0A08), // PCI Express


   0


 },



 {


   END_DEVICE_PATH_TYPE,


   END_ENTIRE_DEVICE_PATH_SUBTYPE,


   {


     END_DEVICE_PATH_LENGTH,


     0


   }


 }


}
},

-};



-PCI_ROOT_BRIDGE_RESOURCE_APERTURE  mResAperture[1][1] = {

{{ 0, 255, 0x40000000, 0x20000000, 0xEFFF0000, 0x10000}},

-};



-EFI_HANDLE mDriverImageHandle;



-PCI_HOST_BRIDGE_INSTANCE mPciHostBridgeInstanceTemplate = {

PCI_HOST_BRIDGE_SIGNATURE,  // Signature
NULL,                       // HostBridgeHandle
0,                          // RootBridgeNumber
{NULL, NULL},               // Head
FALSE,                      // ResourceSubiteed
TRUE,                       // CanRestarted
{
NotifyPhase,
GetNextRootBridge,
GetAttributes,
StartBusEnumeration,
SetBusNumbers,
SubmitResources,
GetProposedResources,
PreprocessController
}

-};



-//
-// Implementation
-//



-/**

Entry point of this driver

@param ImageHandle     Handle of driver image
@param SystemTable     Point to EFI_SYSTEM_TABLE

@retval EFI_OUT_OF_RESOURCES Can not allocate memory resource
@retval EFI_DEVICE_ERROR      Can not install the protocol instance
@retval EFI_SUCCESS           Success to initialize the Pci host bridge.

-**/
-EFI_STATUS
-EFIAPI
-InitializePciHostBridge (

IN EFI_HANDLE        ImageHandle,
IN EFI_SYSTEM_TABLE  *SystemTable
)

-{

EFI_STATUS                  Status;
UINTN                       Loop1;
UINTN                       Loop2;
PCI_HOST_BRIDGE_INSTANCE    *HostBridge;
PCI_ROOT_BRIDGE_INSTANCE    *PrivateData;

mDriverImageHandle = ImageHandle;

DEBUG((EFI_D_ERROR, "%a () -

EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR
...
...
...
0x%x\n",

__FUNCTION__,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR)));
...
...
...
...


//
// Create Host Bridge Device Handle
//
for (Loop1 = 0; Loop1 < HOST_BRIDGE_NUMBER; Loop1++) {
HostBridge = AllocateCopyPool

(sizeof(PCI_HOST_BRIDGE_INSTANCE),
...
...
...
&mPciHostBridgeInstanceTemplate);

if (HostBridge == NULL) {
 return EFI_OUT_OF_RESOURCES;


}

HostBridge->RootBridgeNumber = RootBridgeNumber[Loop1];
InitializeListHead (&HostBridge->Head);

Status = gBS->InstallMultipleProtocolInterfaces (
               &HostBridge->HostBridgeHandle,


               &gEfiPciHostBridgeResourceAllocationProtocolGuid,



&HostBridge-
...
...
...
...
ResAlloc,

               NULL


               );


if (EFI_ERROR (Status)) {
 FreePool (HostBridge);


 return EFI_DEVICE_ERROR;


}

//
// Create Root Bridge Device Handle in this Host Bridge
//

for (Loop2 = 0; Loop2 < HostBridge->RootBridgeNumber; Loop2++) {
 PrivateData = AllocateZeroPool



(sizeof(PCI_ROOT_BRIDGE_INSTANCE));
...
...
...

 if (PrivateData == NULL) {


   return EFI_OUT_OF_RESOURCES;


 }



 PrivateData->Signature = PCI_ROOT_BRIDGE_SIGNATURE;


 PrivateData->DevicePath = (EFI_DEVICE_PATH_PROTOCOL



*)&mEfiPciRootBridgeDevicePath[Loop1][Loop2];


 RootBridgeConstructor (


   &PrivateData->Io,


   HostBridge->HostBridgeHandle,


   RootBridgeAttribute[Loop1][Loop2],


   &mResAperture[Loop1][Loop2]


   );



 Status = gBS->InstallMultipleProtocolInterfaces(


                 &PrivateData->Handle,


                 &gEfiDevicePathProtocolGuid,      PrivateData->DevicePath,


                 &gEfiPciRootBridgeIoProtocolGuid, &PrivateData->Io,


                 NULL


                 );


 if (EFI_ERROR (Status)) {


   FreePool(PrivateData);


   return EFI_DEVICE_ERROR;


 }



 InsertTailList (&HostBridge->Head, &PrivateData->Link);


}
}

return EFI_SUCCESS;

-}




-/**

These are the notifications from the PCI bus driver that it is about to

enter
...
...
...
a certain

phase of the PCI enumeration process.

This member function can be used to notify the host bridge driver to

perform specific actions,

including any chipset-specific initialization, so that the chipset is

ready
...
to
...
...
...
enter the next phase.

Eight notification points are defined at this time. See belows:
EfiPciHostBridgeBeginEnumeration       Resets the host bridge PCI

apertures
...
...
...
and internal data

                                     structures. The PCI enumerator should issue this



notification

                                     before starting a fresh enumeration process.



Enumeration cannot

                                     be restarted after sending any other notification



such
...
...
...
as

                                     EfiPciHostBridgeBeginBusAllocation.


EfiPciHostBridgeBeginBusAllocation     The bus allocation phase is

about to
...
...
...
begin. No specific action is

                                     required here. This notification can be used to



perform
...
...
...
any

                                     chipset-specific programming.


EfiPciHostBridgeEndBusAllocation       The bus allocation and bus

programming phase is complete. No

                                     specific action is required here. This notification



can
...
be
...
...
...
used to

                                     perform any chipset-specific programming.


EfiPciHostBridgeBeginResourceAllocation
                                     The resource allocation phase is about to begin.



No
...
...
...
...
specific

                                     action is required here. This notification can be



used to
...
...
...
perform

                                     any chipset-specific programming.


EfiPciHostBridgeAllocateResources      Allocates resources per

previously
...
...
...
submitted requests for all the PCI

                                     root bridges. These resource settings are



returned
...
on
...
...
...
the next call to

                                     GetProposedResources(). Before calling



NotifyPhase()
...
...
...
with a Phase of

                                     EfiPciHostBridgeAllocateResource, the PCI bus



enumerator is responsible

                                     for gathering I/O and memory requests for


                                     all the PCI root bridges and submitting these



requests
...
...
...
using

                                     SubmitResources(). This function pads the



resource
...
...
...
amount

                                     to suit the root bridge hardware, takes care of



dependencies between

                                     the PCI root bridges, and calls the Global



Coherency
...
...
...
Domain (GCD)

                                     with the allocation request. In the case of



padding,
...
the
...
...
...
allocated range

                                     could be bigger than what was requested.


EfiPciHostBridgeSetResources           Programs the host bridge

hardware to
...
...
...
decode previously allocated

                                     resources (proposed resources) for all the PCI



root
...
...
...
...
bridges. After the

                                     hardware is programmed, reassigning resources



will not
...
...
...
be supported.

                                     The bus settings are not affected.


EfiPciHostBridgeFreeResources          Deallocates resources that were

previously allocated for all the PCI

                                     root bridges and resets the I/O and memory



apertures
...
...
...
to their initial

                                     state. The bus settings are not affected. If the



request
...
...
...
to allocate

                                     resources fails, the PCI enumerator can use this



notification to

                                     deallocate previous resources, adjust the



requests,
...
and
...
...
...
retry

                                     allocation.


EfiPciHostBridgeEndResourceAllocation  The resource allocation

phase
...
is
...
...
...
completed. No specific action is

                                     required here. This notification can be used to



perform
...
...
...
any chipsetspecific

                                     programming.



@param[in] This                The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in] Phase               The phase during enumeration

@retval EFI_NOT_READY          This phase cannot be entered at this

time.
...
...
...
For example, this error

                             is valid for a Phase of



EfiPciHostBridgeAllocateResources if
...
...
...

                             SubmitResources() has not been called for one or



more
...
...
...

                             PCI root bridges before this call


@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error. This error is valid

                             for a Phase of EfiPciHostBridgeSetResources.


@retval EFI_INVALID_PARAMETER Invalid phase parameter
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.

                             This error is valid for a Phase of



EfiPciHostBridgeAllocateResources if the

                             previously submitted resource requests cannot be



fulfilled
...
...
...
or

                             were only partially fulfilled.


@retval EFI_SUCCESS            The notification was accepted without

any
...
...
...
...
errors.



-**/
-EFI_STATUS
-EFIAPI
-NotifyPhase(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE    Phase
)

-{

PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
PCI_RESOURCE_TYPE                     Index;
LIST_ENTRY                            *List;
EFI_PHYSICAL_ADDRESS                  BaseAddress;
UINT64                                AddrLen;
UINTN                                 BitsOfAlignment;
EFI_STATUS                            Status;
EFI_STATUS                            ReturnStatus;
UINT64                                Attributes;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR

GcdMemorySpaceDescriptor;
...
...
...


HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);


switch (Phase) {

case EfiPciHostBridgeBeginEnumeration:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeBeginEnumeration( %d

)\n",
...
...
...
__LINE__));

if (HostBridgeInstance->CanRestarted) {
 //


 // Reset the Each Root Bridge


 //


 List = HostBridgeInstance->Head.ForwardLink;



 while (List != &HostBridgeInstance->Head) {


   RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY



(List);
...
...
...
...

   for (Index = TypeIo; Index < TypeMax; Index++) {


     RootBridgeInstance->ResAllocNode[Index].Type      = Index;


     RootBridgeInstance->ResAllocNode[Index].Base      = 0;


     RootBridgeInstance->ResAllocNode[Index].Length    = 0;


     RootBridgeInstance->ResAllocNode[Index].Status    = ResNone;


   }



   List = List->ForwardLink;


 }



 HostBridgeInstance->ResourceSubmited = FALSE;


 HostBridgeInstance->CanRestarted     = TRUE;


} else {
 //


 // Can not restart


 //


 return EFI_NOT_READY;


}
break;

case EfiPciHostBridgeEndEnumeration:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeEndEnumeration( %d

)\n",
...
...
...
...
__LINE__));

//
// No specific action is required here, can perform any chipset

specific
...
...
...
...
programing

//
return EFI_SUCCESS;

case EfiPciHostBridgeBeginBusAllocation:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeBeginBusAllocation( %d

)\n",
...
...
...
__LINE__));

//
// No specific action is required here, can perform any chipset

specific
...
...
...
...
programing

//
HostBridgeInstance->CanRestarted = FALSE;
return EFI_SUCCESS;

case EfiPciHostBridgeEndBusAllocation:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeEndBusAllocation( %d

)\n",
...
...
...
__LINE__));

//
// No specific action is required here, can perform any chipset

specific
...
...
...
...
programing

//
return EFI_SUCCESS;

case EfiPciHostBridgeBeginResourceAllocation:
// DEBUG((EFI_D_ERROR,

"EfiPciHostBridgeBeginResourceAllocation(
...
%d
...
...
...
)\n", __LINE__));

//
// No specific action is required here, can perform any chipset

specific
...
...
...
...
programing

//
return EFI_SUCCESS;

case EfiPciHostBridgeAllocateResources:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeAllocateResources( %d

)\n",
...
...
...
__LINE__));

ReturnStatus = EFI_SUCCESS;
if (HostBridgeInstance->ResourceSubmited) {
 //


 // Take care of the resource dependencies between the root



bridges
...
...
...
...

 //


 List = HostBridgeInstance->Head.ForwardLink;



 while (List != &HostBridgeInstance->Head) {


   RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY



(List);
...
...
...
...

   for (Index = TypeIo; Index < TypeBus; Index++) {


     if (RootBridgeInstance->ResAllocNode[Index].Status !=



ResNone)
...
{
...
...
...


       AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;



       //


       // Get the number of '1' in Alignment.


       //


       BitsOfAlignment = (UINTN) (HighBitSet64 (RootBridgeInstance-



...
ResAllocNode[Index].Alignment) + 1);


       switch (Index) {



         case TypeIo:


           //


           // It is impossible for this chipset to align 0xFFFF for IO16


           // So clear it


           //


           if (BitsOfAlignment >= 16) {


             BitsOfAlignment = 0;


           }



           Status = gDS->AllocateIoSpace (


                           EfiGcdAllocateAnySearchBottomUp,


                           EfiGcdIoTypeIo,


                           BitsOfAlignment,


                           AddrLen,


                           &BaseAddress,


                           mDriverImageHandle,


                           NULL


                           );



           if (!EFI_ERROR (Status)) {


             RootBridgeInstance->ResAllocNode[Index].Base   =



(UINTN)BaseAddress;

             RootBridgeInstance->ResAllocNode[Index].Status =



ResAllocated;
...
...
...

           } else {


             ReturnStatus = Status;


             if (Status != EFI_OUT_OF_RESOURCES) {


               RootBridgeInstance->ResAllocNode[Index].Length = 0;


             }


           }



           break;




         case TypeMem32:


           //


           // It is impossible for this chipset to align 0xFFFFFFFF for



Mem32
...
...
...
...

           // So clear it


           //



           if (BitsOfAlignment >= 32) {


             BitsOfAlignment = 0;


           }




-#if AMD_PCI_PMEM64 // AMD_PCI_PMEM64

         case TypePMem64:


           if (BitsOfAlignment >= 64) {


             BitsOfAlignment = 0;


           }



-#endif             // AMD_PCI_PMEM64


           Status = gDS->AllocateMemorySpace (


                           EfiGcdAllocateAnySearchBottomUp,


                           EfiGcdMemoryTypeMemoryMappedIo,


                           BitsOfAlignment,


                           AddrLen,


                           &BaseAddress,


                           mDriverImageHandle,


                           NULL


                           );



           if (!EFI_ERROR (Status)) {


               Status = gDS->GetMemorySpaceDescriptor



((EFI_PHYSICAL_ADDRESS)BaseAddress,
&GcdMemorySpaceDescriptor);
...
...
...

               ASSERT_EFI_ERROR (Status);


               Attributes = GcdMemorySpaceDescriptor.Attributes |



EFI_MEMORY_RUNTIME | EFI_MEMORY_UC;

               Status = gDS->SetMemorySpaceAttributes (


                               (EFI_PHYSICAL_ADDRESS)BaseAddress,


                               AddrLen,


                               Attributes


                               );


               ASSERT_EFI_ERROR (Status);



             // We were able to allocate the PCI memory


             RootBridgeInstance->ResAllocNode[Index].Base   =



(UINTN)BaseAddress;

             RootBridgeInstance->ResAllocNode[Index].Status =



ResAllocated;
...
...
...


           } else {


             // Not able to allocate enough PCI memory


             ReturnStatus = Status;



             if (Status != EFI_OUT_OF_RESOURCES) {


               RootBridgeInstance->ResAllocNode[Index].Length = 0;


             }


             // ASSERT_EFI_ERROR (Status);


           }


           break;



         case TypePMem32:


         case TypeMem64:



-#if AMD_PCI_PMEM64 != 1 // AMD_PCI_PMEM64

         case TypePMem64:



-#endif                  // AMD_PCI_PMEM64

             ReturnStatus = EFI_ABORTED;


             break;


         default:


           ASSERT (FALSE);


           break;


         }; //end switch


     }


   }



   List = List->ForwardLink;


 }


 return ReturnStatus;



} else {
 return EFI_NOT_READY;


}
break;

case EfiPciHostBridgeSetResources:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeSetResources( %d )\n",

__LINE__));

break;

case EfiPciHostBridgeFreeResources:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeFreeResources( %d )\n",

__LINE__));

ReturnStatus = EFI_SUCCESS;
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
 RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY



(List);
...
...
...
...

 for (Index = TypeIo; Index < TypeBus; Index++) {


   if (RootBridgeInstance->ResAllocNode[Index].Status ==



ResAllocated) {
...
...
...

     AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;


     BaseAddress = RootBridgeInstance->ResAllocNode[Index].Base;


     switch (Index) {



     case TypeIo:


       Status = gDS->FreeIoSpace (BaseAddress, AddrLen);


       if (EFI_ERROR (Status)) {


         ReturnStatus = Status;


       }


       break;



     case TypeMem32:



-#if AMD_PCI_PMEM64 // AMD_PCI_PMEM64

     case TypePMem64:



-#endif             // AMD_PCI_PMEM64

       Status = gDS->FreeMemorySpace (BaseAddress, AddrLen);


       if (EFI_ERROR (Status)) {


         ReturnStatus = Status;


       }


       break;



     case TypePMem32:


       break;



     case TypeMem64:


       break;




-#if AMD_PCI_PMEM64 != 1 // AMD_PCI_PMEM64

     case TypePMem64:


       break;



-#endif                  // AMD_PCI_PMEM64


     default:


       ASSERT (FALSE);


       break;



     }; //end switch


     RootBridgeInstance->ResAllocNode[Index].Type      = Index;


     RootBridgeInstance->ResAllocNode[Index].Base      = 0;


     RootBridgeInstance->ResAllocNode[Index].Length    = 0;


     RootBridgeInstance->ResAllocNode[Index].Status    = ResNone;


   }


 }



 List = List->ForwardLink;


}

HostBridgeInstance->ResourceSubmited = FALSE;
HostBridgeInstance->CanRestarted     = TRUE;
return ReturnStatus;

case EfiPciHostBridgeEndResourceAllocation:
// DEBUG((EFI_D_ERROR, "EfiPciHostBridgeEndResourceAllocation(

%d
...
...
...
)\n", __LINE__));

HostBridgeInstance->CanRestarted = FALSE;
break;

default:
return EFI_INVALID_PARAMETER;
}

return EFI_SUCCESS;

-}



-/**

Return the device handle of the next PCI root bridge that is

associated
...
with
...
...
...
this Host Bridge.


This function is called multiple times to retrieve the device handles

of
...
all
...
...
...
the PCI root bridges that

are associated with this PCI host bridge. Each PCI host bridge is

associated
...
...
...
with one or more PCI

root bridges. On each call, the handle that was returned by the

previous
...
...
...
call is passed into the

interface, and on output the interface returns the device handle of

the
...
...
...
next PCI root bridge. The

caller can use the handle to obtain the instance of the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL

for that root bridge. When there are no more PCI root bridges to

report,
...
...
...
the interface returns

EFI_NOT_FOUND. A PCI enumerator must enumerate the PCI root

bridges
...
...
...
in the order that they

are returned by this function.

@param[in]       This              The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in, out]  RootBridgeHandle  Returns the device handle of

the
...
next
...
...
...
PCI root bridge.


@retval EFI_SUCCESS            If parameter RootBridgeHandle = NULL,

then
...
...
...
return the first Rootbridge handle of the

                             specific Host bridge and return EFI_SUCCESS.


@retval EFI_NOT_FOUND          Can not find the any more root bridge

in
...
...
...
specific host bridge.

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not an

EFI_HANDLE that was

                             returned on a previous call to GetNextRootBridge().



-**/
-EFI_STATUS
-EFIAPI
-GetNextRootBridge(

IN       EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN OUT   EFI_HANDLE                                       *RootBridgeHandle
)

-{

BOOLEAN                               NoRootBridge;
LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;

// DEBUG((EFI_D_ERROR, "GetNextRootBridge()\n"));
NoRootBridge = TRUE;
HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

while (List != &HostBridgeInstance->Head) {
NoRootBridge = FALSE;
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (*RootBridgeHandle == NULL) {
 //


 // Return the first Root Bridge Handle of the Host Bridge


 //


 // DEBUG((EFI_D_ERROR, "GetNextRootBridge( %d )\n",



__LINE__));
...
...
...

 *RootBridgeHandle = RootBridgeInstance->Handle;


 return EFI_SUCCESS;


} else {
 if (*RootBridgeHandle == RootBridgeInstance->Handle) {


   //


   // Get next if have


   //


   List = List->ForwardLink;


   if (List!=&HostBridgeInstance->Head) {


     RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY



(List);
...
...
...

     *RootBridgeHandle = RootBridgeInstance->Handle;


     return EFI_SUCCESS;


   } else {


     // DEBUG((EFI_D_ERROR, "GetNextRootBridge( %d )\n",



__LINE__));
...
...
...

     return EFI_NOT_FOUND;


   }


 }


}

List = List->ForwardLink;
} //end while

if (NoRootBridge) {
// DEBUG((EFI_D_ERROR, "GetNextRootBridge( %d )\n",

__LINE__));
...
...
...
...

return EFI_NOT_FOUND;
} else {
// DEBUG((EFI_D_ERROR, "GetNextRootBridge( %d )\n",

__LINE__));
...
...
...
...

return EFI_INVALID_PARAMETER;
}

-}



-/**

Returns the allocation attributes of a PCI root bridge.

The function returns the allocation attributes of a specific PCI root

bridge.
...
...
...
The attributes can vary

from one PCI root bridge to another. These attributes are different

from
...
...
...
the decode-related

attributes that are returned by the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member
function.
...
...
...
The

RootBridgeHandle parameter is used to specify the instance of the

PCI
...
root
...
...
...
bridge. The device

handles of all the root bridges that are associated with this host

bridge
...
...
...
...
must be obtained by calling

GetNextRootBridge(). The attributes are static in the sense that they

do
...
...
...
not change during or

after the enumeration process. The hardware may provide

mechanisms to
...
...
...
change the attributes on

the fly, but such changes must be completed before

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is

installed. The permitted values of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are
defined
...
...
...
in

"Related Definitions" below. The caller uses these attributes to

combine
...
...
...
multiple resource requests.

For example, if the flag

EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is
...
...
...
set, the PCI bus enumerator needs to

include requests for the prefetchable memory in the

nonprefetchable
...
...
...
...
memory pool and not request any

prefetchable memory.
 Attribute                                 Description




--
...

...
...
...


EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM         If this bit is set,

then
...
...
...
the PCI root bridge does not support separate

                                           windows for nonprefetchable and



prefetchable
...
...
...
...
memory. A PCI bus

                                           driver needs to include requests for



prefetchable
...
...
...
memory in the

                                           nonprefetchable memory pool.



EFI_PCI_HOST_BRIDGE_MEM64_DECODE             If this bit is set, then

the
...
...
...
PCI root bridge supports 64-bit memory

                                           windows. If this bit is not set, the PCI bus



driver
...
...
...
...
needs to include

                                           requests for a 64-bit memory address in the



corresponding 32-bit

                                           memory pool.



@param[in]   This               The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in]   RootBridgeHandle   The device handle of the PCI root

bridge
...
...
...
in which the caller is interested. Type

                              EFI_HANDLE is defined in InstallProtocolInterface()



in
...
the
...
...
...
UEFI 2.0 Specification.

@param[out]  Attributes         The pointer to attribte of root bridge, it

is
...
...
...
...
output parameter


@retval EFI_INVALID_PARAMETER Attribute pointer is NULL
@retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
@retval EFI_SUCCESS             Success to get attribute of interested

root
...
...
...
...
bridge.



-**/
-EFI_STATUS
-EFIAPI
-GetAttributes(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT UINT64                                           *Attributes
)

-{

LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;

// DEBUG((EFI_D_ERROR, "GetAttributes()\n"));
if (Attributes == NULL) {
return EFI_INVALID_PARAMETER;
}

HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 *Attributes = RootBridgeInstance->RootBridgeAttrib;


 return EFI_SUCCESS;


}
List = List->ForwardLink;
}

//
// RootBridgeHandle is not an EFI_HANDLE
// that was returned on a previous call to GetNextRootBridge()
//
return EFI_INVALID_PARAMETER;

-}



-/**

Sets up the specified PCI root bridge for the bus enumeration

process.
...
...
...
...


This member function sets up the root bridge for bus enumeration

and
...
...
...
returns the PCI bus range

over which the search should be performed in ACPI 2.0 resource

descriptor
...
...
...
format.


@param[in]   This              The

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL
instance.
...
...
...
...

@param[in]   RootBridgeHandle  The PCI Root Bridge to be set up.
@param[out]  Configuration     Pointer to the pointer to the PCI bus

resource descriptor.


@retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
@retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource

descriptor
...
...
...
tag.

@retval EFI_SUCCESS           Sucess to allocate ACPI resource

descriptor.
...
...
...
...



-**/
-EFI_STATUS
-EFIAPI
-StartBusEnumeration(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT VOID                                             **Configuration
)

-{

LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
VOID                                  *Buffer;
UINT8                                 *Temp;
UINT64                                BusStart;
UINT64                                BusEnd;

// DEBUG((EFI_D_ERROR, "StartBusEnumeration()\n"));
HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 //


 // Set up the Root Bridge for Bus Enumeration


 //


 BusStart = RootBridgeInstance->BusBase;


 BusEnd   = RootBridgeInstance->BusLimit;


 //


 // Program the Hardware(if needed) if error return



EFI_DEVICE_ERROR
...
...
...

 //



 Buffer = AllocatePool



(sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
...
...
...
sizeof(EFI_ACPI_END_TAG_DESCRIPTOR));

 if (Buffer == NULL) {


   return EFI_OUT_OF_RESOURCES;


 }



 Temp = (UINT8 *)Buffer;



 // DEBUG((EFI_D_ERROR, "StartBusEnumeration() - Creating BUS



descriptor\n"));

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Desc =



ACPI_ADDRESS_SPACE_DESCRIPTOR;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Len  =



sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->ResType =



ACPI_ADDRESS_SPACE_TYPE_BUS;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->GenFlag = 0;


 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->SpecificFlag



=
...
0;
...
...
...

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)-



...
AddrSpaceGranularity = 0;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)-



AddrRangeMin =
...
...
BusStart;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)-



AddrRangeMax =
...
...
BusEnd;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)-



...
AddrTranslationOffset = 0;

 ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrLen =



BusEnd
...
...
...

BusStart + 1;

 Temp = Temp + sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


 ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc =



ACPI_END_TAG_DESCRIPTOR;

 ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;



 *Configuration = Buffer;


 return EFI_SUCCESS;


}
List = List->ForwardLink;
}

return EFI_INVALID_PARAMETER;

-}



-/**

Programs the PCI root bridge hardware so that it decodes the

specified PCI
...
...
...
bus range.


This member function programs the specified PCI root bridge to

decode
...
...
...
the bus range that is

specified by the input parameter Configuration.
The bus range information is specified in terms of the ACPI 2.0

resource
...
...
...
descriptor format.


@param[in] This              The

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL
instance
...
...
...
...

@param[in] RootBridgeHandle  The PCI Root Bridge whose bus

range
...
is to
...
...
...
be programmed

@param[in] Configuration     The pointer to the PCI bus resource

descriptor
...
...
...


@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a

valid
...
...
...
ACPI 2.0 resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration does not include a

valid
...
...
...
ACPI 2.0 bus resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration includes valid ACPI

2.0
...
...
...
resource descriptors other than

                             bus descriptors.


@retval EFI_INVALID_PARAMETER Configuration contains one or

more
...
...
...
invalid ACPI resource descriptors.

@retval EFI_INVALID_PARAMETER "Address Range Minimum" is

invalid
...
...
...
for this root bridge.

@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid

for
...
...
...
this root bridge.

@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error.

@retval EFI_SUCCESS            The bus range for the PCI root bridge

was
...
...
...
...
programmed.



-**/
-EFI_STATUS
-EFIAPI
-SetBusNumbers(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_HANDLE                                       RootBridgeHandle,
IN VOID                                             *Configuration
)

-{

LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
UINT8                                 *Ptr;
UINTN                                 BusStart;
UINTN                                 BusEnd;
UINTN                                 BusLen;

// DEBUG((EFI_D_ERROR, "SetBusNumbers()\n"));
if (Configuration == NULL) {
return EFI_INVALID_PARAMETER;
}

Ptr = Configuration;

//
// Check the Configuration is valid
//
if(*Ptr != ACPI_ADDRESS_SPACE_DESCRIPTOR) {
return EFI_INVALID_PARAMETER;
}

if (((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Ptr)->ResType !=

ACPI_ADDRESS_SPACE_TYPE_BUS) {

return EFI_INVALID_PARAMETER;
}

Ptr += sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
if (*Ptr != ACPI_END_TAG_DESCRIPTOR) {
return EFI_INVALID_PARAMETER;
}

HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

Ptr = Configuration;

while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 BusStart = (UINTN)((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR



*)Ptr)-
...
...
...
...
...
AddrRangeMin;

 BusLen = (UINTN)((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR



*)Ptr)-
...
...
...
...
...
AddrLen;

 BusEnd = BusStart + BusLen - 1;



 if (BusStart > BusEnd) {


   return EFI_INVALID_PARAMETER;


 }



 if ((BusStart < RootBridgeInstance->BusBase) || (BusEnd >



RootBridgeInstance->BusLimit)) {

   return EFI_INVALID_PARAMETER;


 }



 //


 // Update the Bus Range


 //


 RootBridgeInstance->ResAllocNode[TypeBus].Base   = BusStart;


 RootBridgeInstance->ResAllocNode[TypeBus].Length = BusLen;


 RootBridgeInstance->ResAllocNode[TypeBus].Status =



ResAllocated;
...
...
...
...


 //


 // Program the Root Bridge Hardware


 //



 return EFI_SUCCESS;


}

List = List->ForwardLink;
}

return EFI_INVALID_PARAMETER;

-}




-/**

Submits the I/O and memory resource requirements for the

specified
...
PCI
...
...
...
root bridge.


This function is used to submit all the I/O and memory resources

that
...
are
...
...
...
required by the specified

PCI root bridge. The input parameter Configuration is used to specify

the
...
...
...
following:


The various types of resources that are required



The associated lengths in terms of ACPI 2.0 resource descriptor



format
...
...
...


@param[in] This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param[in] RootBridgeHandle  The PCI root bridge whose I/O and

memory resource requirements are being submitted.

@param[in] Configuration     The pointer to the PCI I/O and PCI

memory
...
...
...
resource descriptor.


@retval EFI_SUCCESS            The I/O and memory resource requests

for
...
a
...
...
...
PCI root bridge were accepted.

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a

valid
...
...
...
ACPI 2.0 resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration includes requests

for
...
...
...
...
one or more resource types that are

                             not supported by this PCI root bridge. This error will



happen
...
...
...
if the caller

                             did not combine resources according to Attributes



that
...
...
...
...
were returned by

                             GetAllocAttributes().


@retval EFI_INVALID_PARAMETER Address Range Maximum" is

invalid.
...
...
...

@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid

for
...
...
...
this PCI root bridge.

@retval EFI_INVALID_PARAMETER "Address Space Granularity" is

invalid
...
...
...
for this PCI root bridge.



-**/
-EFI_STATUS
-EFIAPI
-SubmitResources(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_HANDLE                                       RootBridgeHandle,
IN VOID                                             *Configuration
)

-{

LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
UINT8                                 *Temp;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR     *Ptr;
UINT64                                AddrLen;
UINT64                                Alignment;

// DEBUG((EFI_D_ERROR, "SubmitResources()\n"));
//
// Check the input parameter: Configuration
//
if (Configuration == NULL) {
return EFI_INVALID_PARAMETER;
}

HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

Temp = (UINT8 *)Configuration;
while ( *Temp == ACPI_ADDRESS_SPACE_DESCRIPTOR) {
Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) ;
}
if (*Temp != ACPI_END_TAG_DESCRIPTOR) {
return EFI_INVALID_PARAMETER;
}

Temp = (UINT8 *)Configuration;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 while ( *Temp == ACPI_ADDRESS_SPACE_DESCRIPTOR) {


   Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp ;



   //


   // Check Address Length


   //


   if (Ptr->AddrLen > 0xffffffff) {


     return EFI_INVALID_PARAMETER;


   }



   //


   // Check address range alignment


   //


   if (Ptr->AddrRangeMax >= 0xffffffff || Ptr->AddrRangeMax !=



(GetPowerOfTwo64 (Ptr->AddrRangeMax + 1) - 1)) {

     return EFI_INVALID_PARAMETER;


   }



   switch (Ptr->ResType) {



   case ACPI_ADDRESS_SPACE_TYPE_MEM:



     //


     // Check invalid Address Sapce Granularity


     //



-#if AMD_PCI_PMEM64 != 1 // AMD_PCI_PMEM64

     if (Ptr->AddrSpaceGranularity != 32) {


       return EFI_INVALID_PARAMETER;


     }



-#endif                  // AMD_PCI_PMEM64


     //


     // check the memory resource request is supported by PCI root



bridge
...
...
...

     //


     if (RootBridgeInstance->RootBridgeAttrib ==



EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM &&

          Ptr->SpecificFlag == 0x06) {


       return EFI_INVALID_PARAMETER;


     }



     AddrLen = Ptr->AddrLen;


     Alignment = Ptr->AddrRangeMax;


     if (Ptr->AddrSpaceGranularity == 32) {


       if (Ptr->SpecificFlag == 0x06) {


         //


         // Apply from GCD


         //


         RootBridgeInstance->ResAllocNode[TypePMem32].Status =



ResSubmitted;

       } else {


         RootBridgeInstance->ResAllocNode[TypeMem32].Length =



AddrLen;
...
...
...

         RootBridgeInstance->ResAllocNode[TypeMem32].Alignment =



Alignment;

         RootBridgeInstance->ResAllocNode[TypeMem32].Status =



ResRequested;

         HostBridgeInstance->ResourceSubmited = TRUE;


       }


     }



     if (Ptr->AddrSpaceGranularity == 64) {


       if (Ptr->SpecificFlag == 0x06) {



-#if AMD_PCI_PMEM64 // AMD_PCI_PMEM64

         RootBridgeInstance->ResAllocNode[TypePMem64].Length =



AddrLen;

         RootBridgeInstance->ResAllocNode[TypePMem64].Alignment



=
...
...
...
...
Alignment;

         RootBridgeInstance->ResAllocNode[TypePMem64].Status =



ResRequested;
-#else              // AMD_PCI_PMEM64

         RootBridgeInstance->ResAllocNode[TypePMem64].Status =



ResSubmitted;
-#endif             // AMD_PCI_PMEM64

       } else {


         RootBridgeInstance->ResAllocNode[TypeMem64].Status =



ResSubmitted;

       }


     }


     break;



   case ACPI_ADDRESS_SPACE_TYPE_IO:


     AddrLen = (UINTN) Ptr->AddrLen;


     Alignment = (UINTN) Ptr->AddrRangeMax;


     RootBridgeInstance->ResAllocNode[TypeIo].Length  = AddrLen;


     RootBridgeInstance->ResAllocNode[TypeIo].Alignment =



Alignment;
...
...
...

     RootBridgeInstance->ResAllocNode[TypeIo].Status  =



ResRequested;
...
...
...

     HostBridgeInstance->ResourceSubmited = TRUE;


     break;



   default:


       break;


   };



   Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) ;


 }



 return EFI_SUCCESS;


}

List = List->ForwardLink;
}

return EFI_INVALID_PARAMETER;

-}



-/**

Returns the proposed resource settings for the specified PCI root

bridge.
...
...
...


This member function returns the proposed resource settings for

the
...
...
...
...
specified PCI root bridge. The

proposed resource settings are prepared when NotifyPhase() is

called
...
with
...
...
...
a Phase of

EfiPciHostBridgeAllocateResources. The output parameter

Configuration
...
...
...

specifies the following:

The various types of resources, excluding bus resources, that are



allocated


The associated lengths in terms of ACPI 2.0 resource descriptor



format
...
...
...


@param[in]  This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param[in]  RootBridgeHandle  The PCI root bridge handle. Type

EFI_HANDLE is defined in InstallProtocolInterface() in the UEFI 2.0
Specification.

@param[out] Configuration     The pointer to the pointer to the PCI

I/O
...
and
...
...
...
memory resource descriptor.


@retval EFI_SUCCESS            The requested parameters were

returned.
...
...
...
...

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error.

@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-GetProposedResources(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT VOID                                             **Configuration
)

-{

LIST_ENTRY                            *List;
PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
UINTN                                 Index;
UINTN                                 Number;
VOID                                  *Buffer;
UINT8                                 *Temp;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR     *Ptr;
UINT64                                ResStatus;

// DEBUG((EFI_D_ERROR, "GetProposedResources()\n"));
Buffer = NULL;
Number = 0;
//
// Get the Host Bridge Instance from the resource allocation protocol
//
HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

//
// Enumerate the root bridges in this host bridge
//
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 for (Index = 0; Index < TypeBus; Index ++) {


   if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone)



{
...
...
...
...

     Number ++;


   }


 }



 if (Number ==  0) {


   return EFI_INVALID_PARAMETER;


 }



 Buffer = AllocateZeroPool (Number *



sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
sizeof(EFI_ACPI_END_TAG_DESCRIPTOR));

 if (Buffer == NULL) {


   return EFI_OUT_OF_RESOURCES;


 }



 Temp = Buffer;


 for (Index = 0; Index < TypeBus; Index ++) {


   if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone)



{
...
...
...
...

     Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp ;


     ResStatus = RootBridgeInstance->ResAllocNode[Index].Status;



     switch (Index) {



     case TypeIo:


       //


       // Io


       //


       Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;


       Ptr->Len  = sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


       Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_IO;


       Ptr->GenFlag = 0;


       Ptr->SpecificFlag = 0;


       Ptr->AddrRangeMin = RootBridgeInstance-



...
ResAllocNode[Index].Base;

       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = \


            (ResStatus == ResAllocated) ? EFI_RESOURCE_SATISFIED :



EFI_RESOURCE_LESS;

       Ptr->AddrLen = RootBridgeInstance-



ResAllocNode[Index].Length;
...
...

       break;



     case TypeMem32:


       //


       // Memory 32


       //


       Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;


       Ptr->Len  = sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


       Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;


       Ptr->GenFlag = 0;


       Ptr->SpecificFlag = 0;


       Ptr->AddrSpaceGranularity = 32;


       Ptr->AddrRangeMin = RootBridgeInstance-



...
ResAllocNode[Index].Base;

       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = \


            (ResStatus == ResAllocated) ? EFI_RESOURCE_SATISFIED :



EFI_RESOURCE_LESS;

       Ptr->AddrLen = RootBridgeInstance-



ResAllocNode[Index].Length;
...
...

       break;



     case TypePMem32:


       //


       // Prefetch memory 32


       //


       Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;


       Ptr->Len  = sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


       Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;


       Ptr->GenFlag = 0;


       Ptr->SpecificFlag = 6;


       Ptr->AddrSpaceGranularity = 32;


       Ptr->AddrRangeMin = 0;


       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;


       Ptr->AddrLen = 0;


       break;



     case TypeMem64:


       //


       // Memory 64


       //


       Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;


       Ptr->Len  = sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


       Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;


       Ptr->GenFlag = 0;


       Ptr->SpecificFlag = 0;


       Ptr->AddrSpaceGranularity = 64;


       Ptr->AddrRangeMin = 0;


       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;


       Ptr->AddrLen = 0;


       break;



     case TypePMem64:


       //


       // Prefetch memory 64


       //


       Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;


       Ptr->Len  = sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


       Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;


       Ptr->GenFlag = 0;


       Ptr->SpecificFlag = 6;


       Ptr->AddrSpaceGranularity = 64;



-#if AMD_PCI_PMEM64 // AMD_PCI_PMEM64

       Ptr->AddrRangeMin = RootBridgeInstance-



...
ResAllocNode[Index].Base;

       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = \


            (ResStatus == ResAllocated) ? EFI_RESOURCE_SATISFIED :



EFI_RESOURCE_LESS;

       Ptr->AddrLen = RootBridgeInstance-



ResAllocNode[Index].Length;
...
...
-#else              // AMD_PCI_PMEM64

       Ptr->AddrRangeMin = 0;


       Ptr->AddrRangeMax = 0;


       Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;


       Ptr->AddrLen = 0;



-#endif             // AMD_PCI_PMEM64

       break;


     };



     Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);


   }


 }



 ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc =



ACPI_END_TAG_DESCRIPTOR;

 ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;



 *Configuration = Buffer;



 return EFI_SUCCESS;


}

List = List->ForwardLink;
}

return EFI_INVALID_PARAMETER;

-}



-/**

Provides the hooks from the PCI bus driver to every PCI controller

(device/function) at various

stages of the PCI enumeration process that allow the host bridge

driver to
...
...
...
preinitialize individual

PCI controllers before enumeration.

This function is called during the PCI enumeration process. No

specific
...
...
...
...
action is expected from this

member function. It allows the host bridge driver to preinitialize

individual
...
...
...
PCI controllers before

enumeration.

@param This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param RootBridgeHandle  The associated PCI root bridge handle.

Type
...
...
...
EFI_HANDLE is defined in

                       InstallProtocolInterface() in the UEFI 2.0 Specification.


@param PciAddress        The address of the PCI device on the PCI

bus.
...
This
...
...
...
address can be passed to the

                       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL member



functions to
...
...
...
access the PCI

                       configuration space of the device. See Table 12-1 in the



UEFI
...
...
...
2.0 Specification for

                       the definition of



EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS.

@param Phase             The phase of the PCI device enumeration.

@retval EFI_SUCCESS              The requested parameters were

returned.
...
...
...

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Phase is not a valid phase that is

defined in



EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
...
...
...

@retval EFI_DEVICE_ERROR         Programming failed due to a

hardware
...
...
...
error. The PCI enumerator should

                               not enumerate this device, including its child devices



if
...
it is
...
...
...
a PCI-to-PCI

                               bridge.




-**/
-EFI_STATUS
-EFIAPI
-PreprocessController (

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,

IN  EFI_HANDLE                                                RootBridgeHandle,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS

PciAddress,

IN  EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE

Phase
...
...
...

)

-{

PCI_HOST_BRIDGE_INSTANCE              *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE              *RootBridgeInstance;
LIST_ENTRY                            *List;

// DEBUG((EFI_D_ERROR, "PreprocessController()\n"));
HostBridgeInstance =

INSTANCE_FROM_RESOURCE_ALLOCATION_THIS
...
...
...
(This);

List = HostBridgeInstance->Head.ForwardLink;

//
// Enumerate the root bridges in this host bridge
//
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
 break;


}
List = List->ForwardLink;
}
if (List == &HostBridgeInstance->Head) {
return EFI_INVALID_PARAMETER;
}

if ((UINT32)Phase > EfiPciBeforeResourceCollection) {
return EFI_INVALID_PARAMETER;
}

return EFI_SUCCESS;

-}
diff --git
a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h
...
...
...
b/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h
deleted file mode 100644
index f91b42a27572..000000000000
--- a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridge.h
+++ /dev/null
@@ -1,498 +0,0 @@
-/** @file

The Header file of the Pci Host Bridge Driver

Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are
licensed and made available under the terms and conditions of the

BSD
...
...
...
...
License

which accompanies this distribution.  The full text of the license may

be
...
...
...
...
found at

http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS

IS"
...
...
...
...
BASIS,

WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER

EXPRESS OR IMPLIED.



-**/



-#ifndef _PCI_HOST_BRIDGE_H_
-#define _PCI_HOST_BRIDGE_H_



-#include <PiDxe.h>



-#include <IndustryStandard/Pci.h>
-#include <IndustryStandard/Acpi.h>



-#include <Protocol/PciHostBridgeResourceAllocation.h>
-#include <Protocol/PciRootBridgeIo.h>
-#include <Protocol/Metronome.h>
-#include <Protocol/DevicePath.h>




-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/DxeServicesTableLib.h>
-#include <Library/DevicePathLib.h>
-#include <Library/IoLib.h>
-#include <Library/PciLib.h>



-//
-// Hard code the host bridge number in the platform.
-// In this chipset, there are two host bridges.
-//
-#define HOST_BRIDGE_NUMBER         1



-#define MAX_PCI_DEVICE_NUMBER      31
-#define MAX_PCI_FUNCTION_NUMBER    7
-#define MAX_PCI_REG_ADDRESS        0xFF



-typedef enum {

IoOperation,
MemOperation,
PciOperation

-} OPERATION_TYPE;



-#define PCI_HOST_BRIDGE_SIGNATURE  SIGNATURE_32('e', 'h', 's',
't')
...
...
...
...
-typedef struct {

UINTN                                             Signature;
EFI_HANDLE                                        HostBridgeHandle;
UINTN                                             RootBridgeNumber;
LIST_ENTRY                                        Head;
BOOLEAN                                           ResourceSubmited;
BOOLEAN                                           CanRestarted;
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

ResAlloc;
...
...
...
-} PCI_HOST_BRIDGE_INSTANCE;



-#define INSTANCE_FROM_RESOURCE_ALLOCATION_THIS(a) \

CR(a, PCI_HOST_BRIDGE_INSTANCE, ResAlloc,

PCI_HOST_BRIDGE_SIGNATURE)



-//
-//  HostBridge Resource Allocation interface
-//



-/**

These are the notifications from the PCI bus driver that it is about to

enter
...
...
...
a certain

phase of the PCI enumeration process.

This member function can be used to notify the host bridge driver to

perform specific actions,

including any chipset-specific initialization, so that the chipset is

ready
...
to
...
...
...
enter the next phase.

Eight notification points are defined at this time. See belows:
EfiPciHostBridgeBeginEnumeration       Resets the host bridge PCI

apertures
...
...
...
and internal data

                                     structures. The PCI enumerator should issue this



notification

                                     before starting a fresh enumeration process.



Enumeration cannot

                                     be restarted after sending any other notification



such
...
...
...
as

                                     EfiPciHostBridgeBeginBusAllocation.


EfiPciHostBridgeBeginBusAllocation     The bus allocation phase is

about to
...
...
...
begin. No specific action is

                                     required here. This notification can be used to



perform
...
...
...
any

                                     chipset-specific programming.


EfiPciHostBridgeEndBusAllocation       The bus allocation and bus

programming phase is complete. No

                                     specific action is required here. This notification



can
...
be
...
...
...
used to

                                     perform any chipset-specific programming.


EfiPciHostBridgeBeginResourceAllocation
                                     The resource allocation phase is about to begin.



No
...
...
...
...
specific

                                     action is required here. This notification can be



used to
...
...
...
perform

                                     any chipset-specific programming.


EfiPciHostBridgeAllocateResources      Allocates resources per

previously
...
...
...
submitted requests for all the PCI

                                     root bridges. These resource settings are



returned
...
on
...
...
...
the next call to

                                     GetProposedResources(). Before calling



NotifyPhase()
...
...
...
with a Phase of

                                     EfiPciHostBridgeAllocateResource, the PCI bus



enumerator is responsible

                                     for gathering I/O and memory requests for


                                     all the PCI root bridges and submitting these



requests
...
...
...
using

                                     SubmitResources(). This function pads the



resource
...
...
...
amount

                                     to suit the root bridge hardware, takes care of



dependencies between

                                     the PCI root bridges, and calls the Global



Coherency
...
...
...
Domain (GCD)

                                     with the allocation request. In the case of



padding,
...
the
...
...
...
allocated range

                                     could be bigger than what was requested.


EfiPciHostBridgeSetResources           Programs the host bridge

hardware to
...
...
...
decode previously allocated

                                     resources (proposed resources) for all the PCI



root
...
...
...
...
bridges. After the

                                     hardware is programmed, reassigning resources



will not
...
...
...
be supported.

                                     The bus settings are not affected.


EfiPciHostBridgeFreeResources          Deallocates resources that were

previously allocated for all the PCI

                                     root bridges and resets the I/O and memory



apertures
...
...
...
to their initial

                                     state. The bus settings are not affected. If the



request
...
...
...
to allocate

                                     resources fails, the PCI enumerator can use this



notification to

                                     deallocate previous resources, adjust the



requests,
...
and
...
...
...
retry

                                     allocation.


EfiPciHostBridgeEndResourceAllocation  The resource allocation

phase
...
is
...
...
...
completed. No specific action is

                                     required here. This notification can be used to



perform
...
...
...
any chipsetspecific

                                     programming.



@param[in] This                The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in] Phase               The phase during enumeration

@retval EFI_NOT_READY          This phase cannot be entered at this

time.
...
...
...
For example, this error

                             is valid for a Phase of



EfiPciHostBridgeAllocateResources if
...
...
...

                             SubmitResources() has not been called for one or



more
...
...
...

                             PCI root bridges before this call


@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error. This error is valid

                             for a Phase of EfiPciHostBridgeSetResources.


@retval EFI_INVALID_PARAMETER Invalid phase parameter
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.

                             This error is valid for a Phase of



EfiPciHostBridgeAllocateResources if the

                             previously submitted resource requests cannot be



fulfilled
...
...
...
or

                             were only partially fulfilled.


@retval EFI_SUCCESS            The notification was accepted without

any
...
...
...
...
errors.



-**/
-EFI_STATUS
-EFIAPI
-NotifyPhase(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE    Phase
);


-/**

Return the device handle of the next PCI root bridge that is

associated
...
with
...
...
...
this Host Bridge.


This function is called multiple times to retrieve the device handles

of
...
all
...
...
...
the PCI root bridges that

are associated with this PCI host bridge. Each PCI host bridge is

associated
...
...
...
with one or more PCI

root bridges. On each call, the handle that was returned by the

previous
...
...
...
call is passed into the

interface, and on output the interface returns the device handle of

the
...
...
...
next PCI root bridge. The

caller can use the handle to obtain the instance of the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL

for that root bridge. When there are no more PCI root bridges to

report,
...
...
...
the interface returns

EFI_NOT_FOUND. A PCI enumerator must enumerate the PCI root

bridges
...
...
...
in the order that they

are returned by this function.
For D945 implementation, there is only one root bridge in PCI host

bridge.
...
...
...


@param[in]       This              The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in, out]  RootBridgeHandle  Returns the device handle of

the
...
next
...
...
...
PCI root bridge.


@retval EFI_SUCCESS            If parameter RootBridgeHandle = NULL,

then
...
...
...
return the first Rootbridge handle of the

                             specific Host bridge and return EFI_SUCCESS.


@retval EFI_NOT_FOUND          Can not find the any more root bridge

in
...
...
...
specific host bridge.

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not an

EFI_HANDLE that was

                             returned on a previous call to GetNextRootBridge().



-**/
-EFI_STATUS
-EFIAPI
-GetNextRootBridge(

IN       EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN OUT   EFI_HANDLE                                       *RootBridgeHandle
);


-/**

Returns the allocation attributes of a PCI root bridge.

The function returns the allocation attributes of a specific PCI root

bridge.
...
...
...
The attributes can vary

from one PCI root bridge to another. These attributes are different

from
...
...
...
the decode-related

attributes that are returned by the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member
function.
...
...
...
The

RootBridgeHandle parameter is used to specify the instance of the

PCI
...
root
...
...
...
bridge. The device

handles of all the root bridges that are associated with this host

bridge
...
...
...
...
must be obtained by calling

GetNextRootBridge(). The attributes are static in the sense that they

do
...
...
...
not change during or

after the enumeration process. The hardware may provide

mechanisms to
...
...
...
change the attributes on

the fly, but such changes must be completed before

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is

installed. The permitted values of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are
defined
...
...
...
in

"Related Definitions" below. The caller uses these attributes to

combine
...
...
...
multiple resource requests.

For example, if the flag

EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is
...
...
...
set, the PCI bus enumerator needs to

include requests for the prefetchable memory in the

nonprefetchable
...
...
...
...
memory pool and not request any

prefetchable memory.
 Attribute                                 Description




--
...

...
...
...


EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM         If this bit is set,

then
...
...
...
the PCI root bridge does not support separate

                                           windows for nonprefetchable and



prefetchable
...
...
...
...
memory. A PCI bus

                                           driver needs to include requests for



prefetchable
...
...
...
memory in the

                                           nonprefetchable memory pool.



EFI_PCI_HOST_BRIDGE_MEM64_DECODE             If this bit is set, then

the
...
...
...
PCI root bridge supports 64-bit memory

                                           windows. If this bit is not set, the PCI bus



driver
...
...
...
...
needs to include

                                           requests for a 64-bit memory address in the



corresponding 32-bit

                                           memory pool.



@param[in]   This               The instance pointer of

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

@param[in]   RootBridgeHandle   The device handle of the PCI root

bridge
...
...
...
in which the caller is interested. Type

                              EFI_HANDLE is defined in InstallProtocolInterface()



in
...
the
...
...
...
UEFI 2.0 Specification.

@param[out]  Attributes         The pointer to attribte of root bridge, it

is
...
...
...
...
output parameter


@retval EFI_INVALID_PARAMETER Attribute pointer is NULL
@retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
@retval EFI_SUCCESS             Success to get attribute of interested

root
...
...
...
...
bridge.



-**/
-EFI_STATUS
-EFIAPI
-GetAttributes(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT UINT64                                           *Attributes
);


-/**

Sets up the specified PCI root bridge for the bus enumeration

process.
...
...
...
...


This member function sets up the root bridge for bus enumeration

and
...
...
...
returns the PCI bus range

over which the search should be performed in ACPI 2.0 resource

descriptor
...
...
...
format.


@param[in]   This              The

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL
instance.
...
...
...
...

@param[in]   RootBridgeHandle  The PCI Root Bridge to be set up.
@param[out]  Configuration     Pointer to the pointer to the PCI bus

resource descriptor.


@retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
@retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource

descriptor
...
...
...
tag.

@retval EFI_SUCCESS           Sucess to allocate ACPI resource

descriptor.
...
...
...
...



-**/
-EFI_STATUS
-EFIAPI
-StartBusEnumeration(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT VOID                                             **Configuration
);


-/**

Programs the PCI root bridge hardware so that it decodes the

specified PCI
...
...
...
bus range.


This member function programs the specified PCI root bridge to

decode
...
...
...
the bus range that is

specified by the input parameter Configuration.
The bus range information is specified in terms of the ACPI 2.0

resource
...
...
...
descriptor format.


@param[in] This              The

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL
instance
...
...
...
...

@param[in] RootBridgeHandle  The PCI Root Bridge whose bus

range
...
is to
...
...
...
be programmed

@param[in] Configuration     The pointer to the PCI bus resource

descriptor
...
...
...


@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a

valid
...
...
...
ACPI 2.0 resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration does not include a

valid
...
...
...
ACPI 2.0 bus resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration includes valid ACPI

2.0
...
...
...
resource descriptors other than

                             bus descriptors.


@retval EFI_INVALID_PARAMETER Configuration contains one or

more
...
...
...
invalid ACPI resource descriptors.

@retval EFI_INVALID_PARAMETER "Address Range Minimum" is

invalid
...
...
...
for this root bridge.

@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid

for
...
...
...
this root bridge.

@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error.

@retval EFI_SUCCESS            The bus range for the PCI root bridge

was
...
...
...
...
programmed.



-**/
-EFI_STATUS
-EFIAPI
-SetBusNumbers(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_HANDLE                                       RootBridgeHandle,
IN VOID                                             *Configuration
);


-/**

Submits the I/O and memory resource requirements for the

specified
...
PCI
...
...
...
root bridge.


This function is used to submit all the I/O and memory resources

that
...
are
...
...
...
required by the specified

PCI root bridge. The input parameter Configuration is used to specify

the
...
...
...
following:


The various types of resources that are required



The associated lengths in terms of ACPI 2.0 resource descriptor



format
...
...
...


@param[in] This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param[in] RootBridgeHandle  The PCI root bridge whose I/O and

memory resource requirements are being submitted.

@param[in] Configuration     The pointer to the PCI I/O and PCI

memory
...
...
...
resource descriptor.


@retval EFI_SUCCESS            The I/O and memory resource requests

for
...
a
...
...
...
PCI root bridge were accepted.

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a

valid
...
...
...
ACPI 2.0 resource descriptor.

@retval EFI_INVALID_PARAMETER Configuration includes requests

for
...
...
...
...
one or more resource types that are

                             not supported by this PCI root bridge. This error will



happen
...
...
...
if the caller

                             did not combine resources according to Attributes



that
...
...
...
...
were returned by

                             GetAllocAttributes().


@retval EFI_INVALID_PARAMETER Address Range Maximum" is

invalid.
...
...
...

@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid

for
...
...
...
this PCI root bridge.

@retval EFI_INVALID_PARAMETER "Address Space Granularity" is

invalid
...
...
...
for this PCI root bridge.



-**/
-EFI_STATUS
-EFIAPI
-SubmitResources(

IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...
...

IN EFI_HANDLE                                       RootBridgeHandle,
IN VOID                                             *Configuration
);


-/**

Returns the proposed resource settings for the specified PCI root

bridge.
...
...
...


This member function returns the proposed resource settings for

the
...
...
...
...
specified PCI root bridge. The

proposed resource settings are prepared when NotifyPhase() is

called
...
with
...
...
...
a Phase of

EfiPciHostBridgeAllocateResources. The output parameter

Configuration
...
...
...

specifies the following:

The various types of resources, excluding bus resources, that are



allocated


The associated lengths in terms of ACPI 2.0 resource descriptor



format
...
...
...


@param[in]  This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param[in]  RootBridgeHandle  The PCI root bridge handle. Type

EFI_HANDLE is defined in InstallProtocolInterface() in the UEFI 2.0
Specification.

@param[out] Configuration     The pointer to the pointer to the PCI

I/O
...
and
...
...
...
memory resource descriptor.


@retval EFI_SUCCESS            The requested parameters were

returned.
...
...
...
...

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_DEVICE_ERROR       Programming failed due to a

hardware
...
...
...
...
error.

@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-GetProposedResources(

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                       RootBridgeHandle,
OUT VOID                                             **Configuration
);


-/**

Provides the hooks from the PCI bus driver to every PCI controller

(device/function) at various

stages of the PCI enumeration process that allow the host bridge

driver to
...
...
...
preinitialize individual

PCI controllers before enumeration.

This function is called during the PCI enumeration process. No

specific
...
...
...
...
action is expected from this

member function. It allows the host bridge driver to preinitialize

individual
...
...
...
PCI controllers before

enumeration.

@param This              Pointer to the

EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
...
...
...
...

@param RootBridgeHandle  The associated PCI root bridge handle.

Type
...
...
...
EFI_HANDLE is defined in

                       InstallProtocolInterface() in the UEFI 2.0 Specification.


@param PciAddress        The address of the PCI device on the PCI

bus.
...
This
...
...
...
address can be passed to the

                       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL member



functions to
...
...
...
access the PCI

                       configuration space of the device. See Table 12-1 in the



UEFI
...
...
...
2.0 Specification for

                       the definition of



EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS.

@param Phase             The phase of the PCI device enumeration.

@retval EFI_SUCCESS              The requested parameters were

returned.
...
...
...

@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid

root
...
...
...
bridge handle.

@retval EFI_INVALID_PARAMETER Phase is not a valid phase that is

defined in



EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
...
...
...

@retval EFI_DEVICE_ERROR         Programming failed due to a

hardware
...
...
...
error. The PCI enumerator should

                               not enumerate this device, including its child devices



if
...
it is
...
...
...
a PCI-to-PCI

                               bridge.




-**/
-EFI_STATUS
-EFIAPI
-PreprocessController (

IN  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL

*This,
...
...
...

IN  EFI_HANDLE                                        RootBridgeHandle,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS

PciAddress,
...
...
...

IN  EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE      Phase
);



-//
-// Define resource status constant
-//
-#define EFI_RESOURCE_NONEXISTENT   0xFFFFFFFFFFFFFFFFULL
-#define EFI_RESOURCE_LESS          0xFFFFFFFFFFFFFFFEULL




-//
-// Driver Instance Data Prototypes
-//



-typedef struct {

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION  Operation;
UINTN                                      NumberOfBytes;
UINTN                                      NumberOfPages;
EFI_PHYSICAL_ADDRESS                       HostAddress;
EFI_PHYSICAL_ADDRESS                       MappedHostAddress;

-} MAP_INFO;



-typedef struct {

ACPI_HID_DEVICE_PATH              AcpiDevicePath;
EFI_DEVICE_PATH_PROTOCOL          EndDevicePath;

-} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH;



-typedef struct {

UINT64          BusBase;
UINT64          BusLimit;

UINT64          MemBase;
UINT64          MemLimit;

UINT64          IoBase;
UINT64          IoLimit;

-} PCI_ROOT_BRIDGE_RESOURCE_APERTURE;



-typedef enum {

TypeIo = 0,
TypeMem32,
TypePMem32,
TypeMem64,
TypePMem64,
TypeBus,
TypeMax

-} PCI_RESOURCE_TYPE;



-typedef enum {

ResNone = 0,
ResSubmitted,
ResRequested,
ResAllocated,
ResStatusMax

-} RES_STATUS;



-typedef struct {

PCI_RESOURCE_TYPE Type;
UINT64            Base;
UINT64            Length;
UINT64            Alignment;
RES_STATUS        Status;

-} PCI_RES_NODE;



-#define PCI_ROOT_BRIDGE_SIGNATURE  SIGNATURE_32('e', '2', 'p',
'b')
...
...
...
...



-typedef struct {

UINT32                 Signature;
LIST_ENTRY             Link;
EFI_HANDLE             Handle;
UINT64                 RootBridgeAttrib;
UINT64                 Attributes;
UINT64                 Supports;

//
// Specific for this memory controller: Bus, I/O, Mem
//
PCI_RES_NODE           ResAllocNode[6];

//
// Addressing for Memory and I/O and Bus arrange
//
UINT64                 BusBase;
UINT64                 MemBase;
UINT64                 IoBase;
UINT64                 BusLimit;
UINT64                 MemLimit;
UINT64                 IoLimit;


-//UINTN                  PciAddress;
-//UINTN                  PciData;


EFI_DEVICE_PATH_PROTOCOL                *DevicePath;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL         Io;


-} PCI_ROOT_BRIDGE_INSTANCE;




-//
-// Driver Instance Data Macros
-//
-#define DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(a) \

CR(a, PCI_ROOT_BRIDGE_INSTANCE, Io,

PCI_ROOT_BRIDGE_SIGNATURE)
...
...
...




-#define DRIVER_INSTANCE_FROM_LIST_ENTRY(a) \

CR(a, PCI_ROOT_BRIDGE_INSTANCE, Link,

PCI_ROOT_BRIDGE_SIGNATURE)



-/**


Construct the Pci Root Bridge Io protocol

@param Protocol         Point to protocol instance
@param HostBridgeHandle Handle of host bridge
@param Attri            Attribute of host bridge
@param ResAperture      ResourceAperture for host bridge

@retval EFI_SUCCESS Success to initialize the Pci Root Bridge.


-**/
-EFI_STATUS
-RootBridgeConstructor (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL    *Protocol,
IN EFI_HANDLE                         HostBridgeHandle,
IN UINT64                             Attri,
IN PCI_ROOT_BRIDGE_RESOURCE_APERTURE  *ResAperture
);


-#endif
diff --git
a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
...
...
...
...
b/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
...
...
...
...
deleted file mode 100644
index c5fe0fa61aac..000000000000

a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBridgeDxe.inf
...
...
...
+++ /dev/null
@@ -1,54 +0,0 @@
-## @file
-#
-#    Component description file a sinngle segment PCI Host Bridge
driver.
...
...
...
...
-#
-#  Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
-#  This program and the accompanying materials
-#  are licensed and made available under the terms and conditions of
the
...
...
...
BSD License
-#  which accompanies this distribution.  The full text of the license may
be
...
...
...
found at
-#  http://opensource.org/licenses/bsd-license.php
-#
-#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS
IS"
...
...
...
BASIS,
-#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND,
EITHER
...
...
...
...
EXPRESS OR IMPLIED.
-#
-##



-[Defines]

INF_VERSION                    = 0x00010005
BASE_NAME                      = PciHostBridge
FILE_GUID                      = 2383608E-C6D0-4e3e-858D-45DFAC3543D5
MODULE_TYPE                    = DXE_DRIVER
VERSION_STRING                 = 1.0

ENTRY_POINT                    = InitializePciHostBridge


-[Packages]

MdePkg/MdePkg.dec


-[LibraryClasses]

UefiDriverEntryPoint
UefiBootServicesTableLib
DxeServicesTableLib
UefiLib
MemoryAllocationLib
BaseMemoryLib
BaseLib
DebugLib
DevicePathLib
IoLib
PciLib


-[Sources]

PciHostBridge.c
PciRootBridgeIo.c
PciHostBridge.h


-[Protocols]

gEfiPciHostBridgeResourceAllocationProtocolGuid
gEfiPciRootBridgeIoProtocolGuid
gEfiMetronomeArchProtocolGuid
gEfiDevicePathProtocolGuid


-[depex]

gEfiMetronomeArchProtocolGuid


diff --git
a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
...
...
...
b/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
deleted file mode 100644
index 4ac89fb7548f..000000000000

a/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciRootBridgeIo.c
...
...
...
...
+++ /dev/null
@@ -1,2150 +0,0 @@
-/** @file

PCI Root Bridge Io Protocol implementation


-Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials are
-licensed and made available under the terms and conditions of the
BSD
...
...
...
...
License
-which accompanies this distribution.  The full text of the license may
be
...
...
...
...
found at
-http://opensource.org/licenses/bsd-license.php



-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS
IS"
...
...
...
...
BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER
EXPRESS OR IMPLIED.



-**/



-#include "PciHostBridge.h"
-#include <IndustryStandard/Acpi50.h>



-typedef struct {

EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR     SpaceDesp[TypeMax];
EFI_ACPI_END_TAG_DESCRIPTOR           EndDesp;

-} RESOURCE_CONFIGURATION;



-RESOURCE_CONFIGURATION Configuration = {

{
// TypeIo:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_IO, 0, 0, 0, 0xEFFF0000, 0xEFFFFFFF,



0,
...
0},
...
...
...


// TypeMem32:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_MEM, 0, 0, 32, 0x40000000,



0x5FFFFFFF, 0,
...
...
...
0},


// TypePMem32:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_MEM, 0, 6, 32, 0x40000000,



0x5FFFFFFF, 0,
...
...
...
0},


// TypeMem64:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_MEM, 0, 0, 64, 0x40000000,



0x5FFFFFFF, 0,
...
...
...
0},


// TypePMem64:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_MEM, 0, 6, 64, 0x40000000,



0x5FFFFFFF, 0,
...
...
...
0},


// TypeBus:
{ACPI_ADDRESS_SPACE_DESCRIPTOR,

sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR),

ACPI_ADDRESS_SPACE_TYPE_BUS, 0, 0,  0, 0, 255, 0, 0}


},
{ACPI_END_TAG_DESCRIPTOR, 0}

-};



-//
-// Protocol Member Function Prototypes
-//



-/**

Polls an address in memory mapped I/O space until an exit condition

is
...
...
...
...
met, or

a timeout occurs.

This function provides a standard way to poll a PCI memory location.

A
...
PCI
...
...
...
memory read

operation is performed at the PCI memory address specified by

Address
...
...
...
for the width specified

by Width. The result of this PCI memory read operation is stored in

Result.
...
...
...
This PCI memory

read operation is repeated until either a timeout of Delay 100 ns

units
...
has
...
...
...
expired, or (Result &

Mask) is equal to Value.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The base address of the memory operations.

The
...
...
...
caller is

                     responsible for aligning Address if required.


@param[in]   Mask      Mask used for the polling criteria. Bytes above

Width
...
...
...
in Mask

                     are ignored. The bits in the bytes below Width which are



zero in
...
...
...

                     Mask are ignored when polling the memory address.


@param[in]   Value     The comparison value used for the polling exit

criteria.

@param[in]   Delay     The number of 100 ns units to poll. Note that

timer
...
...
...
available may

                     be of poorer granularity.


@param[out]  Result    Pointer to the last value read from the

memory
...
...
...
...
location.


@retval EFI_SUCCESS            The last data returned from the access

matched the poll exit criteria.

@retval EFI_INVALID_PARAMETER Width is invalid.
@retval EFI_INVALID_PARAMETER Result is NULL.
@retval EFI_TIMEOUT            Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPollMem (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN  UINT64                                 Address,
IN  UINT64                                 Mask,
IN  UINT64                                 Value,
IN  UINT64                                 Delay,
OUT UINT64                                 *Result
);


-/**

Reads from the I/O space of a PCI Root Bridge. Returns when either

the
...
...
...
polling exit criteria is

satisfied or after a defined duration.

This function provides a standard way to poll a PCI I/O location. A PCI

I/O
...
...
...
read operation is

performed at the PCI I/O address specified by Address for the width

specified by Width.

The result of this PCI I/O read operation is stored in Result. This PCI

I/O
...
...
...
...
read operation is

repeated until either a timeout of Delay 100 ns units has expired, or

(Result
...
...
...
& Mask) is equal

to Value.

@param[in] This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in] Width     Signifies the width of the I/O operations.
@param[in] Address   The base address of the I/O operations. The

caller is
...
...
...
responsible

                   for aligning Address if required.


@param[in] Mask      Mask used for the polling criteria. Bytes above

Width
...
...
...
in Mask

                   are ignored. The bits in the bytes below Width which are



zero in
...
...
...

                   Mask are ignored when polling the I/O address.


@param[in] Value     The comparison value used for the polling exit

criteria.
...
...
...

@param[in] Delay     The number of 100 ns units to poll. Note that

timer
...
...
...
available may

                   be of poorer granularity.


@param[out] Result   Pointer to the last value read from the

memory
...
...
...
...
location.


@retval EFI_SUCCESS            The last data returned from the access

matched the poll exit criteria.

@retval EFI_INVALID_PARAMETER Width is invalid.
@retval EFI_INVALID_PARAMETER Result is NULL.
@retval EFI_TIMEOUT            Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPollIo (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN  UINT64                                 Address,
IN  UINT64                                 Mask,
IN  UINT64                                 Value,
IN  UINT64                                 Delay,
OUT UINT64                                 *Result
);


-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
memory space.


The Mem.Read(), and Mem.Write() functions enable a driver to

access PCI
...
...
...
controller

registers in the PCI root bridge memory space.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI Root Bridge

on a
...
...
...
platform might require.


@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operation.
@param[in]   Address   The base address of the memory operation.

The
...
...
...
caller is

                     responsible for aligning the Address if required.


@param[in]   Count     The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at Address.


@param[out]  Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMemRead (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
OUT    VOID                                   *Buffer
);


-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
memory space.


The Mem.Read(), and Mem.Write() functions enable a driver to

access PCI
...
...
...
controller

registers in the PCI root bridge memory space.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI Root Bridge

on a
...
...
...
platform might require.


@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operation.
@param[in]   Address   The base address of the memory operation.

The
...
...
...
caller is

                     responsible for aligning the Address if required.


@param[in]   Count     The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at Address.


@param[in]   Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.
-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMemWrite (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
IN     VOID                                   *Buffer
);


-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
I/O space.


@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width       Signifies the width of the memory

operations.
...
...
...
...

@param[in]   UserAddress The base address of the I/O operation.

The
...
...
...
...
caller is responsible for

                       aligning the Address if required.


@param[in]   Count       The number of I/O operations to perform.

Bytes
...
...
...
moved is Width

                       size * Count, starting at Address.


@param[out]  UserBuffer  For read operations, the destination

buffer
...
to
...
...
...
store the results. For

                       write operations, the source buffer to write data from.



@retval EFI_SUCCESS              The data was read from or written to

the
...
PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoIoRead (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 UserAddress,
IN     UINTN                                  Count,
OUT    VOID                                   *UserBuffer
);


-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
I/O space.


@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width       Signifies the width of the memory

operations.
...
...
...
...

@param[in]   UserAddress The base address of the I/O operation.

The
...
...
...
...
caller is responsible for

                       aligning the Address if required.


@param[in]   Count       The number of I/O operations to perform.

Bytes
...
...
...
moved is Width

                       size * Count, starting at Address.


@param[in]   UserBuffer  For read operations, the destination buffer

to
...
...
...
store the results. For

                       write operations, the source buffer to write data from.



@retval EFI_SUCCESS              The data was read from or written to

the
...
PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoIoWrite (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 UserAddress,
IN     UINTN                                  Count,
IN     VOID                                   *UserBuffer
);


-/**

Enables a PCI driver to copy one region of PCI root bridge memory

space to
...
...
...
another region of PCI

root bridge memory space.

The CopyMem() function enables a PCI driver to copy one region of

PCI
...
...
...
root bridge memory

space to another region of PCI root bridge memory space. This is

especially
...
...
...
useful for video scroll

operation on a memory mapped video buffer.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI root bridge

on
...
a
...
...
...
platform might require.


@param[in] This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.

@param[in] Width       Signifies the width of the memory operations.
@param[in] DestAddress The destination address of the memory

operation. The caller is

                     responsible for aligning the DestAddress if required.


@param[in] SrcAddress  The source address of the memory

operation. The
...
...
...
caller is

                     responsible for aligning the SrcAddress if required.


@param[in] Count       The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at DestAddress and



SrcAddress.
...
...
...


@retval  EFI_SUCCESS             The data was copied from one memory

region
...
...
...
to another memory region.

@retval  EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval  EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoCopyMem (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 DestAddress,
IN     UINT64                                 SrcAddress,
IN     UINTN                                  Count
);


-/**

Enables a PCI driver to access PCI controller registers in a PCI root

bridge's
...
...
...
configuration space.


The Pci.Read() and Pci.Write() functions enable a driver to access PCI

configuration

registers for a PCI controller.
The PCI Configuration operations are carried out exactly as

requested.
...
The
...
...
...
caller is responsible for

any alignment and PCI configuration width issues that a PCI Root

Bridge on
...
...
...
a platform might

require.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The address within the PCI configuration

space
...
for
...
...
...
the PCI controller.

@param[in]   Count     The number of PCI configuration operations to

perform. Bytes

                     moved is Width size * Count, starting at Address.


@param[out]  Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPciRead (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
OUT    VOID                                   *Buffer
);


-/**

Enables a PCI driver to access PCI controller registers in a PCI root

bridge's
...
...
...
configuration space.


The Pci.Read() and Pci.Write() functions enable a driver to access PCI

configuration

registers for a PCI controller.
The PCI Configuration operations are carried out exactly as

requested.
...
The
...
...
...
caller is responsible for

any alignment and PCI configuration width issues that a PCI Root

Bridge on
...
...
...
a platform might

require.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The address within the PCI configuration

space
...
for
...
...
...
the PCI controller.

@param[in]   Count     The number of PCI configuration operations to

perform. Bytes

                     moved is Width size * Count, starting at Address.


@param[in]   Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPciWrite (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
IN     VOID                                   *Buffer
);


-/**

Provides the PCI controller-specific addresses required to access

system
...
...
...
memory from a

DMA bus master.

The Map() function provides the PCI controller specific addresses

needed
...
...
...
to access system

memory. This function is used to map system memory for PCI bus

master
...
...
...
DMA accesses.


@param[in]       This            A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]       Operation       Indicates if the bus master is going to

read or
...
...
...
write to system memory.

@param[in]       HostAddress     The system memory address to map

to
...
the
...
...
...
PCI controller.

@param[in, out]  NumberOfBytes   On input the number of bytes to

map.
...
...
...
On output the number of bytes that were mapped.

@param[out]      DeviceAddress   The resulting map address for the

bus
...
...
...
master PCI controller to use

                               to access the system memory's HostAddress.


@param[out]      Mapping         The value to pass to Unmap() when

the
...
bus
...
...
...
master DMA operation is complete.


@retval EFI_SUCCESS            The range was mapped for the returned

NumberOfBytes.

@retval EFI_INVALID_PARAMETER Operation is invalid.
@retval EFI_INVALID_PARAMETER HostAddress is NULL.
@retval EFI_INVALID_PARAMETER NumberOfBytes is NULL.
@retval EFI_INVALID_PARAMETER DeviceAddress is NULL.
@retval EFI_INVALID_PARAMETER Mapping is NULL.
@retval EFI_UNSUPPORTED        The HostAddress cannot be mapped

as a
...
...
...
common buffer.

@retval EFI_DEVICE_ERROR       The system hardware could not map

the
...
...
...
requested address.

@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMap (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL            *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION

Operation,
...
...
...
...

IN     VOID                                       *HostAddress,
IN OUT UINTN                                      *NumberOfBytes,
OUT    EFI_PHYSICAL_ADDRESS                       *DeviceAddress,
OUT    VOID                                       **Mapping
);


-/**

Completes the Map() operation and releases any corresponding

resources.


The Unmap() function completes the Map() operation and releases

any
...
...
...
corresponding resources.

If the operation was an EfiPciOperationBusMasterWrite or
EfiPciOperationBusMasterWrite64, the data is committed to the

target
...
...
...
...
system memory.

Any resources used for the mapping are freed.

@param[in] This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in] Mapping   The mapping value returned from Map().

@retval EFI_SUCCESS            The range was unmapped.
@retval EFI_INVALID_PARAMETER Mapping is not a value that was

returned by Map().

@retval EFI_DEVICE_ERROR       The data was not committed to the

target
...
...
...
system memory.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoUnmap (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN  VOID                             *Mapping
);


-/**

Allocates pages that are suitable for an

EfiPciOperationBusMasterCommonBuffer or

EfiPciOperationBusMasterCommonBuffer64 mapping.

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Type        This parameter is not used and must be ignored.
@param MemoryType  The type of memory to allocate,

EfiBootServicesData or EfiRuntimeServicesData.

@param Pages       The number of pages to allocate.
@param HostAddress A pointer to store the base system memory

address
...
...
...
of the allocated range.

@param Attributes  The requested bit mask of attributes for the

allocated
...
...
...
range. Only

                 the attributes



EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE,
...
...
...
EFI_PCI_ATTRIBUTE_MEMORY_CACHED,

                 and EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE may be



used
...
...
...
with this function.


@retval EFI_SUCCESS            The requested memory pages were

allocated.
...
...
...

@retval EFI_INVALID_PARAMETER MemoryType is invalid.
@retval EFI_INVALID_PARAMETER HostAddress is NULL.
@retval EFI_UNSUPPORTED        Attributes is unsupported. The only

legal
...
...
...
attribute bits are

                             MEMORY_WRITE_COMBINE, MEMORY_CACHED,



and
...
...
...
...
DUAL_ADDRESS_CYCLE.

@retval EFI_OUT_OF_RESOURCES The memory pages could not be

allocated.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoAllocateBuffer (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN  EFI_ALLOCATE_TYPE                Type,
IN  EFI_MEMORY_TYPE                  MemoryType,
IN  UINTN                            Pages,
OUT VOID                             **HostAddress,
IN  UINT64                           Attributes
);


-/**

Frees memory that was allocated with AllocateBuffer().

The FreeBuffer() function frees memory that was allocated with

AllocateBuffer().


@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Pages       The number of pages to free.
@param HostAddress The base system memory address of the

allocated
...
...
...
range.


@retval EFI_SUCCESS            The requested memory pages were

freed.
...
...
...
...

@retval EFI_INVALID_PARAMETER The memory range specified by

HostAddress and Pages

                             was not allocated with AllocateBuffer().




-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoFreeBuffer (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN  UINTN                            Pages,
OUT VOID                             *HostAddress
);


-/**

Flushes all PCI posted write transactions from a PCI host bridge to

system
...
...
...
memory.


The Flush() function flushes any PCI posted write transactions from a

PCI
...
...
...
host bridge to system

memory. Posted write transactions are generated by PCI bus

masters
...
...
...
...
when they perform write

transactions to target addresses in system memory.
This function does not flush posted write transactions from any PCI

bridges. A PCI controller

specific action must be taken to guarantee that the posted write

transactions have been flushed from

the PCI controller and from all the PCI bridges into the PCI host

bridge.
...
This
...
...
...
is typically done with

a PCI read transaction from the PCI controller prior to calling Flush().

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...


@retval EFI_SUCCESS        The PCI posted write transactions were

flushed
...
...
...
from the PCI host

                         bridge to system memory.


@retval EFI_DEVICE_ERROR   The PCI posted write transactions were

not
...
...
...
flushed from the PCI

                         host bridge due to a hardware error.




-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoFlush (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This
);


-/**

Gets the attributes that a PCI root bridge supports setting with

SetAttributes(), and the

attributes that a PCI root bridge is currently using.

The GetAttributes() function returns the mask of attributes that this

PCI
...
...
...
root bridge supports

and the mask of attributes that the PCI root bridge is currently using.

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Supported   A pointer to the mask of attributes that this PCI

root
...
...
...
bridge

                 supports setting with SetAttributes().


@param Attributes  A pointer to the mask of attributes that this PCI

root
...
...
...
bridge is

                 currently using.



@retval  EFI_SUCCESS           If Supports is not NULL, then the

attributes
...
that
...
...
...
the PCI root

                             bridge supports is returned in Supports. If Attributes



is
...
...
...
...

                             not NULL, then the attributes that the PCI root bridge



is
...
...
...
currently

                             using is returned in Attributes.


@retval  EFI_INVALID_PARAMETER Both Supports and Attributes

are
...
...
...
...
NULL.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoGetAttributes (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
OUT UINT64                           *Supported,
OUT UINT64                           *Attributes
);


-/**

Sets attributes for a resource range on a PCI root bridge.

The SetAttributes() function sets the attributes specified in

Attributes
...
for
...
...
...
the PCI root

bridge on the resource range specified by ResourceBase and

ResourceLength. Since the

granularity of setting these attributes may vary from resource type

to
...
...
...
...
resource type, and from

platform to platform, the actual resource range and the one passed

in
...
by
...
...
...
the caller may differ. As a

result, this function may set the attributes specified by Attributes on

a
...
...
...
...
larger resource range

than the caller requested. The actual range is returned in

ResourceBase
...
...
...
and

ResourceLength. The caller is responsible for verifying that the actual

range
...
...
...
for which the

attributes were set is acceptable.

@param[in]       This            A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]       Attributes      The mask of attributes to set. If the

attribute
...
...
...
bit

                               MEMORY_WRITE_COMBINE, MEMORY_CACHED, or


                               MEMORY_DISABLE is set, then the resource range is



specified by

                               ResourceBase and ResourceLength. If


                               MEMORY_WRITE_COMBINE, MEMORY_CACHED,



and
...
...
...
...

                               MEMORY_DISABLE are not set, then ResourceBase



and
...
...
...

                               ResourceLength are ignored, and may be NULL.


@param[in, out]  ResourceBase    A pointer to the base address of

the
...
...
...
...
resource range to be modified

                               by the attributes specified by Attributes.


@param[in, out]  ResourceLength  A pointer to the length of the

resource
...
...
...
range to be modified by the

                               attributes specified by Attributes.



@retval  EFI_SUCCESS     The current configuration of this PCI root

bridge
...
...
...
was returned in Resources.

@retval  EFI_UNSUPPORTED The current configuration of this PCI

root
...
...
...
...
bridge could not be retrieved.

@retval  EFI_INVALID_PARAMETER Invalid pointer of

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoSetAttributes (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN     UINT64                           Attributes,
IN OUT UINT64                           *ResourceBase,
IN OUT UINT64                           *ResourceLength
);


-/**

Retrieves the current resource settings of this PCI root bridge in the

form
...
...
...
of a set of ACPI 2.0

resource descriptors.

There are only two resource descriptor types from the ACPI

Specification
...
...
...
that may be used to

describe the current resources allocated to a PCI root bridge. These

are the
...
...
...
QWORD Address

Space Descriptor (ACPI 2.0 Section 6.4.3.5.1), and the End Tag (ACPI

2.0
...
...
...
...
Section 6.4.2.8). The

QWORD Address Space Descriptor can describe memory, I/O, and

bus
...
...
...
...
number ranges for dynamic

or fixed resources. The configuration of a PCI root bridge is

described
...
with
...
...
...
one or more QWORD

Address Space Descriptors followed by an End Tag.

@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[out]  Resources   A pointer to the ACPI 2.0 resource

descriptors
...
...
...
that describe the

                       current configuration of this PCI root bridge. The storage



for
...
...
...
the

                       ACPI 2.0 resource descriptors is allocated by this



function.
...
The
...
...
...

                       caller must treat the return buffer as read-only data,



and
...
the
...
...
...
buffer

                       must not be freed by the caller.



@retval  EFI_SUCCESS     The current configuration of this PCI root

bridge
...
...
...
was returned in Resources.

@retval  EFI_UNSUPPORTED The current configuration of this PCI

root
...
...
...
...
bridge could not be retrieved.

@retval  EFI_INVALID_PARAMETER Invalid pointer of

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoConfiguration (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
OUT    VOID                             **Resources
);


-//
-// Memory Controller Pci Root Bridge Io Module Variables
-//
-EFI_METRONOME_ARCH_PROTOCOL *mMetronome;



-//
-// Lookup table for increment values based on transfer widths
-//
-UINT8 mInStride[] = {

1, // EfiPciWidthUint8
2, // EfiPciWidthUint16
4, // EfiPciWidthUint32
8, // EfiPciWidthUint64
0, // EfiPciWidthFifoUint8
0, // EfiPciWidthFifoUint16
0, // EfiPciWidthFifoUint32
0, // EfiPciWidthFifoUint64
1, // EfiPciWidthFillUint8
2, // EfiPciWidthFillUint16
4, // EfiPciWidthFillUint32
8  // EfiPciWidthFillUint64

-};



-//
-// Lookup table for increment values based on transfer widths
-//
-UINT8 mOutStride[] = {

1, // EfiPciWidthUint8
2, // EfiPciWidthUint16
4, // EfiPciWidthUint32
8, // EfiPciWidthUint64
1, // EfiPciWidthFifoUint8
2, // EfiPciWidthFifoUint16
4, // EfiPciWidthFifoUint32
8, // EfiPciWidthFifoUint64
0, // EfiPciWidthFillUint8
0, // EfiPciWidthFillUint16
0, // EfiPciWidthFillUint32
0  // EfiPciWidthFillUint64

-};



-/**


Construct the Pci Root Bridge Io protocol

@param Protocol         Point to protocol instance
@param HostBridgeHandle Handle of host bridge
@param Attri            Attribute of host bridge
@param ResAperture      ResourceAperture for host bridge

@retval EFI_SUCCESS Success to initialize the Pci Root Bridge.


-**/
-EFI_STATUS
-RootBridgeConstructor (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL    *Protocol,
IN EFI_HANDLE                         HostBridgeHandle,
IN UINT64                             Attri,
IN PCI_ROOT_BRIDGE_RESOURCE_APERTURE  *ResAperture
)

-{

EFI_STATUS                        Status;
PCI_ROOT_BRIDGE_INSTANCE          *PrivateData;
PCI_RESOURCE_TYPE                 Index;

PrivateData =

DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS
...
...
...
...
(Protocol);


//
// The host to pci bridge, the host memory and io addresses are
// direct mapped to pci addresses, so no need translate, set bases to




...
...
...
...

//
PrivateData->MemBase = ResAperture->MemBase;
PrivateData->IoBase  = ResAperture->IoBase;

//
// The host bridge only supports 32bit addressing for memory
// and standard IA32 16bit io
//
PrivateData->MemLimit = ResAperture->MemLimit;
PrivateData->IoLimit  = ResAperture->IoLimit;

//
// Bus Appeture for this Root Bridge (Possible Range)
//
PrivateData->BusBase  = ResAperture->BusBase;
PrivateData->BusLimit = ResAperture->BusLimit;

//
// Specific for this chipset
//
for (Index = TypeIo; Index < TypeMax; Index++) {
PrivateData->ResAllocNode[Index].Type      = Index;
PrivateData->ResAllocNode[Index].Base      = 0;
PrivateData->ResAllocNode[Index].Length    = 0;
PrivateData->ResAllocNode[Index].Status    = ResNone;
}


-//PrivateData->PciAddress = 0xCF8;
-//PrivateData->PciData    = 0xCFC;


PrivateData->RootBridgeAttrib = Attri;

PrivateData->Supports    = EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO |

EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO | \

                        EFI_PCI_ATTRIBUTE_ISA_IO_16 |



EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO | \

                        EFI_PCI_ATTRIBUTE_VGA_MEMORY | \


                        EFI_PCI_ATTRIBUTE_VGA_IO_16  |



EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;

PrivateData->Attributes  = PrivateData->Supports;

Protocol->ParentHandle   = HostBridgeHandle;

Protocol->PollMem        = RootBridgeIoPollMem;
Protocol->PollIo         = RootBridgeIoPollIo;

Protocol->Mem.Read       = RootBridgeIoMemRead;
Protocol->Mem.Write      = RootBridgeIoMemWrite;

Protocol->Io.Read        = RootBridgeIoIoRead;
Protocol->Io.Write       = RootBridgeIoIoWrite;

Protocol->CopyMem        = RootBridgeIoCopyMem;

Protocol->Pci.Read       = RootBridgeIoPciRead;
Protocol->Pci.Write      = RootBridgeIoPciWrite;

Protocol->Map            = RootBridgeIoMap;
Protocol->Unmap          = RootBridgeIoUnmap;

Protocol->AllocateBuffer = RootBridgeIoAllocateBuffer;
Protocol->FreeBuffer     = RootBridgeIoFreeBuffer;

Protocol->Flush          = RootBridgeIoFlush;

Protocol->GetAttributes  = RootBridgeIoGetAttributes;
Protocol->SetAttributes  = RootBridgeIoSetAttributes;

Protocol->Configuration  = RootBridgeIoConfiguration;

Protocol->SegmentNumber  = 0;

Status = gBS->LocateProtocol (&gEfiMetronomeArchProtocolGuid,

NULL,
...
...
...
(VOID **)&mMetronome);

ASSERT_EFI_ERROR (Status);

return EFI_SUCCESS;

-}



-/**

Check parameters for IO,MMIO,PCI read/write services of PCI Root

Bridge
...
...
...
IO.


The I/O operations are carried out exactly as requested. The caller is

responsible

for satisfying any alignment and I/O width restrictions that a PI

System
...
on a
...
...
...

platform might require. For example on some platforms, width

requests of
...
...
...

EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other

hand,
...
...
...
will

be handled by the driver.

@param[in] This           A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in] OperationType  I/O operation type: IO/MMIO/PCI.
@param[in] Width          Signifies the width of the I/O or Memory

operation.
...
...
...

@param[in] Address        The base address of the I/O operation.
@param[in] Count          The number of I/O operations to perform.

The
...
...
...
...
number of

                       bytes moved is Width size * Count, starting at Address.


@param[in] Buffer         For read operations, the destination buffer to

store
...
...
...
the results.

                       For write operations, the source buffer from which to



write
...
...
...
data.


@retval EFI_SUCCESS            The parameters for this request pass the

checks.

@retval EFI_INVALID_PARAMETER Width is invalid for this PI system.
@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_UNSUPPORTED        The Buffer is not aligned for the

given
...
...
...
...
Width.

@retval EFI_UNSUPPORTED        The address range specified by

Address,
...
...
...
Width,

                            and Count is not valid for this PI system.




-**/
-EFI_STATUS
-RootBridgeIoCheckParameter (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN OPERATION_TYPE                         OperationType,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN UINT64                                 Address,
IN UINTN                                  Count,
IN VOID                                   *Buffer
)

-{

PCI_ROOT_BRIDGE_INSTANCE                     *PrivateData;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS  *PciRbAddr;
UINT64                                       MaxCount;
UINT64                                       Base;
UINT64                                       Limit;

//
// Check to see if Buffer is NULL
//
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}

//
// Check to see if Width is in the valid range
//
if ((UINT32)Width >= EfiPciWidthMaximum) {
return EFI_INVALID_PARAMETER;
}

//
// For FIFO type, the target address won't increase during the access,
// so treat Count as 1
//
if (Width >= EfiPciWidthFifoUint8 && Width <=

EfiPciWidthFifoUint64) {
...
...
...
...

Count = 1;
}

//
// Check to see if Width is in the valid range for I/O Port operations
//
Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) (Width &

0x03);
...
...
...

if ((OperationType != MemOperation) && (Width ==

EfiPciWidthUint64)) {
...
...
...

ASSERT (FALSE);
return EFI_INVALID_PARAMETER;
}

//
// Check to see if Address is aligned
//
if ((Address & (UINT64)(mInStride[Width] - 1)) != 0) {
return EFI_UNSUPPORTED;
}

PrivateData =

DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS
...
...
...
...
(This);


//
// Check to see if any address associated with this transfer exceeds

the
...
...
...
...
maximum

// allowed address.  The maximum address implied by the

parameters
...
...
...
...
passed in is

// Address + Size * Count.  If the following condition is met, then the

transfer

// is not supported.
//
//    Address + Size * Count > Limit + 1
//
// Since Limit can be the maximum integer value supported by the

CPU
...
and
...
...
...
Count

// can also be the maximum integer value supported by the CPU, this

range
...
...
...

// check must be adjusted to avoid all oveflow conditions.
//
// The following form of the range check is equivalent but assumes

that
...
...
...

// Limit is of the form (2^n - 1).
//
if (OperationType == IoOperation) {
Base = PrivateData->IoBase;
Limit = PrivateData->IoLimit;
} else if (OperationType == MemOperation) {
Base = PrivateData->MemBase;
Limit = PrivateData->MemLimit;
} else {
PciRbAddr =

(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS*)
...
...
...
&Address;

if (PciRbAddr->Bus < PrivateData->BusBase || PciRbAddr->Bus >

PrivateData->BusLimit) {

 return EFI_INVALID_PARAMETER;


}

if (PciRbAddr->Device > MAX_PCI_DEVICE_NUMBER || PciRbAddr-

...
Function > MAX_PCI_FUNCTION_NUMBER) {

 return EFI_INVALID_PARAMETER;


}

if (PciRbAddr->ExtendedRegister != 0) {
 Address = PciRbAddr->ExtendedRegister;


} else {
 Address = PciRbAddr->Register;


}
Base = 0;
Limit = MAX_PCI_REG_ADDRESS;
}

if (Address < Base) {
 return EFI_INVALID_PARAMETER;


}

if (Count == 0) {
if (Address > Limit) {
 return EFI_UNSUPPORTED;


}
} else {
MaxCount = RShiftU64 (Limit, Width);
if (MaxCount < (Count - 1)) {
 return EFI_UNSUPPORTED;


}
if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {
 return EFI_UNSUPPORTED;


}
}

return EFI_SUCCESS;

-}



-/**

Internal help function for read and write memory space.

@param[in]   This          A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Write         Switch value for Read or Write.
@param[in]   Width         Signifies the width of the memory

operations.
...
...
...
...

@param[in]   UserAddress   The address within the PCI configuration

space
...
...
...
for the PCI controller.

@param[in]   Count         The number of PCI configuration operations

to
...
...
...
...
perform. Bytes

                         moved is Width size * Count, starting at Address.


@param[in, out] UserBuffer For read operations, the destination

buffer to
...
...
...
store the results. For

                         write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-RootBridgeIoMemRW (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     BOOLEAN                                Write,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
IN OUT VOID                                   *Buffer
)

-{

EFI_STATUS                             Status;
UINT8                                  InStride;
UINT8                                  OutStride;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  OperationWidth;
UINT8                                  *Uint8Buffer;

Status = RootBridgeIoCheckParameter (This, MemOperation, Width,

Address, Count, Buffer);

if (EFI_ERROR (Status)) {
return Status;
}

InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)

(Width
...
...
...
& 0x03);

for (Uint8Buffer = Buffer; Count > 0; Address += InStride,

Uint8Buffer
...
+=
...
...
...
OutStride, Count--) {

if (Write) {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     MmioWrite8 ((UINTN)Address, *Uint8Buffer);


     break;


   case EfiPciWidthUint16:


     MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));


     break;


   case EfiPciWidthUint32:


     MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));


     break;


   case EfiPciWidthUint64:


     MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


} else {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     *Uint8Buffer = MmioRead8 ((UINTN)Address);


     break;


   case EfiPciWidthUint16:


     *((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);


     break;


   case EfiPciWidthUint32:


     *((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);


     break;


   case EfiPciWidthUint64:


     *((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


}
}
return EFI_SUCCESS;

-}



-/**

Internal help function for read and write IO space.

@param[in]   This          A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Write         Switch value for Read or Write.
@param[in]   Width         Signifies the width of the memory

operations.
...
...
...
...

@param[in]   UserAddress   The address within the PCI configuration

space
...
...
...
for the PCI controller.

@param[in]   Count         The number of PCI configuration operations

to
...
...
...
...
perform. Bytes

                         moved is Width size * Count, starting at Address.


@param[in, out] UserBuffer For read operations, the destination

buffer to
...
...
...
store the results. For

                         write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-RootBridgeIoIoRW (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     BOOLEAN                                Write,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
IN OUT VOID                                   *Buffer
)

-{

EFI_STATUS                             Status;
UINT8                                  InStride;
UINT8                                  OutStride;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  OperationWidth;
UINT8                                  *Uint8Buffer;

Status = RootBridgeIoCheckParameter (This, IoOperation, Width,

Address,
...
...
...
Count, Buffer);

if (EFI_ERROR (Status)) {
return Status;
}

InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)

(Width
...
...
...
& 0x03);


for (Uint8Buffer = Buffer; Count > 0; Address += InStride,

Uint8Buffer
...
+=
...
...
...
OutStride, Count--) {

if (Write) {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     IoWrite8 ((UINTN)Address, *Uint8Buffer);


     break;


   case EfiPciWidthUint16:


     IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));


     break;


   case EfiPciWidthUint32:


     IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


} else {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     *Uint8Buffer = IoRead8 ((UINTN)Address);


     break;


   case EfiPciWidthUint16:


     *((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);


     break;


   case EfiPciWidthUint32:


     *((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


}
}
return EFI_SUCCESS;

-}



-/**

Internal help function for read and write PCI configuration space.

@param[in]   This          A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Write         Switch value for Read or Write.
@param[in]   Width         Signifies the width of the memory

operations.
...
...
...
...

@param[in]   UserAddress   The address within the PCI configuration

space
...
...
...
for the PCI controller.

@param[in]   Count         The number of PCI configuration operations

to
...
...
...
...
perform. Bytes

                         moved is Width size * Count, starting at Address.


@param[in, out] UserBuffer For read operations, the destination

buffer to
...
...
...
store the results. For

                         write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-RootBridgeIoPciRW (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN BOOLEAN                                Write,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN UINT64                                 Address,
IN UINTN                                  Count,
IN OUT VOID                               *Buffer
)

-{

EFI_STATUS                                   Status;
UINT8                                        InStride;
UINT8                                        OutStride;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH        OperationWidth;
UINT8                                        *Uint8Buffer;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS  *PciRbAddr;
UINTN                                        PcieRegAddr;

Status = RootBridgeIoCheckParameter (This, PciOperation, Width,

Address,
...
...
...
Count, Buffer);

if (EFI_ERROR (Status)) {
return Status;
}

PciRbAddr =

(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS*)
...
...
...
...
&Address;


PcieRegAddr = (UINTN) PCI_LIB_ADDRESS (
                     PciRbAddr->Bus,


                     PciRbAddr->Device,


                     PciRbAddr->Function,


                     (PciRbAddr->ExtendedRegister != 0) ? \


                       PciRbAddr->ExtendedRegister :


                       PciRbAddr->Register


                     );



InStride = mInStride[Width];
OutStride = mOutStride[Width];
OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)

(Width
...
...
...
& 0x03);

for (Uint8Buffer = Buffer; Count > 0; PcieRegAddr += InStride,

Uint8Buffer
...
...
...
+= OutStride, Count--) {

if (Write) {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     PciWrite8 (PcieRegAddr, *Uint8Buffer);


     break;


   case EfiPciWidthUint16:


     PciWrite16 (PcieRegAddr, *((UINT16 *)Uint8Buffer));


     break;


   case EfiPciWidthUint32:


     PciWrite32 (PcieRegAddr, *((UINT32 *)Uint8Buffer));


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


} else {
 switch (OperationWidth) {


   case EfiPciWidthUint8:


     *Uint8Buffer = PciRead8 (PcieRegAddr);


     break;


   case EfiPciWidthUint16:


     *((UINT16 *)Uint8Buffer) = PciRead16 (PcieRegAddr);


     break;


   case EfiPciWidthUint32:


     *((UINT32 *)Uint8Buffer) = PciRead32 (PcieRegAddr);


     break;


   default:


     //


     // The RootBridgeIoCheckParameter call above will ensure that



this
...
...
...
...

     // path is not taken.


     //


     ASSERT (FALSE);


     break;


 }


}
}

return EFI_SUCCESS;

-}



-/**

Polls an address in memory mapped I/O space until an exit condition

is
...
...
...
...
met, or

a timeout occurs.

This function provides a standard way to poll a PCI memory location.

A
...
PCI
...
...
...
memory read

operation is performed at the PCI memory address specified by

Address
...
...
...
for the width specified

by Width. The result of this PCI memory read operation is stored in

Result.
...
...
...
This PCI memory

read operation is repeated until either a timeout of Delay 100 ns

units
...
has
...
...
...
expired, or (Result &

Mask) is equal to Value.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The base address of the memory operations.

The
...
...
...
caller is

                     responsible for aligning Address if required.


@param[in]   Mask      Mask used for the polling criteria. Bytes above

Width
...
...
...
in Mask

                     are ignored. The bits in the bytes below Width which are



zero in
...
...
...

                     Mask are ignored when polling the memory address.


@param[in]   Value     The comparison value used for the polling exit

criteria.

@param[in]   Delay     The number of 100 ns units to poll. Note that

timer
...
...
...
available may

                     be of poorer granularity.


@param[out]  Result    Pointer to the last value read from the

memory
...
...
...
...
location.


@retval EFI_SUCCESS            The last data returned from the access

matched the poll exit criteria.

@retval EFI_INVALID_PARAMETER Width is invalid.
@retval EFI_INVALID_PARAMETER Result is NULL.
@retval EFI_TIMEOUT            Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPollMem (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN  UINT64                                 Address,
IN  UINT64                                 Mask,
IN  UINT64                                 Value,
IN  UINT64                                 Delay,
OUT UINT64                                 *Result
)

-{

EFI_STATUS  Status;
UINT64      NumberOfTicks;
UINT32      Remainder;

if (Result == NULL) {
return EFI_INVALID_PARAMETER;
}

if ((UINT32)Width > EfiPciWidthUint64) {
return EFI_INVALID_PARAMETER;
}

//
// No matter what, always do a single poll.
//
Status = This->Mem.Read (This, Width, Address, 1, Result);
if (EFI_ERROR (Status)) {
return Status;
}
if ((*Result & Mask) == Value) {
return EFI_SUCCESS;
}

if (Delay == 0) {
return EFI_SUCCESS;

} else {

//
// Determine the proper # of metronome ticks to wait for polling

the
...
...
...
...

// location.  The nuber of ticks is Roundup (Delay / mMetronome-

...
TickPeriod)+1

// The "+1" to account for the possibility of the first tick being short
// because we started in the middle of a tick.
//
// BugBug: overriding mMetronome->TickPeriod with UINT32 until

Metronome

// protocol definition is updated.
//
NumberOfTicks = DivU64x32Remainder (Delay, (UINT32)

mMetronome-
...
...
...
...
TickPeriod, &Remainder);

if (Remainder != 0) {
 NumberOfTicks += 1;


}
NumberOfTicks += 1;

while (NumberOfTicks != 0) {

 mMetronome->WaitForTick (mMetronome, 1);



 Status = This->Mem.Read (This, Width, Address, 1, Result);


 if (EFI_ERROR (Status)) {


   return Status;


 }



 if ((*Result & Mask) == Value) {


   return EFI_SUCCESS;


 }



 NumberOfTicks -= 1;


}
}
return EFI_TIMEOUT;

-}



-/**

Reads from the I/O space of a PCI Root Bridge. Returns when either

the
...
...
...
polling exit criteria is

satisfied or after a defined duration.

This function provides a standard way to poll a PCI I/O location. A PCI

I/O
...
...
...
read operation is

performed at the PCI I/O address specified by Address for the width

specified by Width.

The result of this PCI I/O read operation is stored in Result. This PCI

I/O
...
...
...
...
read operation is

repeated until either a timeout of Delay 100 ns units has expired, or

(Result
...
...
...
& Mask) is equal

to Value.

@param[in] This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in] Width     Signifies the width of the I/O operations.
@param[in] Address   The base address of the I/O operations. The

caller is
...
...
...
responsible

                   for aligning Address if required.


@param[in] Mask      Mask used for the polling criteria. Bytes above

Width
...
...
...
in Mask

                   are ignored. The bits in the bytes below Width which are



zero in
...
...
...

                   Mask are ignored when polling the I/O address.


@param[in] Value     The comparison value used for the polling exit

criteria.
...
...
...

@param[in] Delay     The number of 100 ns units to poll. Note that

timer
...
...
...
available may

                   be of poorer granularity.


@param[out] Result   Pointer to the last value read from the

memory
...
...
...
...
location.


@retval EFI_SUCCESS            The last data returned from the access

matched the poll exit criteria.

@retval EFI_INVALID_PARAMETER Width is invalid.
@retval EFI_INVALID_PARAMETER Result is NULL.
@retval EFI_TIMEOUT            Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPollIo (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN  UINT64                                 Address,
IN  UINT64                                 Mask,
IN  UINT64                                 Value,
IN  UINT64                                 Delay,
OUT UINT64                                 *Result
)

-{

EFI_STATUS  Status;
UINT64      NumberOfTicks;
UINT32      Remainder;

//
// No matter what, always do a single poll.
//

if (Result == NULL) {
return EFI_INVALID_PARAMETER;
}

if ((UINT32)Width > EfiPciWidthUint64) {
return EFI_INVALID_PARAMETER;
}

Status = This->Io.Read (This, Width, Address, 1, Result);
if (EFI_ERROR (Status)) {
return Status;
}
if ((*Result & Mask) == Value) {
return EFI_SUCCESS;
}

if (Delay == 0) {
return EFI_SUCCESS;

} else {

//
// Determine the proper # of metronome ticks to wait for polling

the
...
...
...
...

// location.  The number of ticks is Roundup (Delay / mMetronome-

...
TickPeriod)+1

// The "+1" to account for the possibility of the first tick being short
// because we started in the middle of a tick.
//
NumberOfTicks = DivU64x32Remainder (Delay,

(UINT32)mMetronome-
...
...
...
...
TickPeriod, &Remainder);

if (Remainder != 0) {
 NumberOfTicks += 1;


}
NumberOfTicks += 1;

while (NumberOfTicks != 0) {

 mMetronome->WaitForTick (mMetronome, 1);



 Status = This->Io.Read (This, Width, Address, 1, Result);


 if (EFI_ERROR (Status)) {


   return Status;


 }



 if ((*Result & Mask) == Value) {


   return EFI_SUCCESS;


 }



 NumberOfTicks -= 1;


}
}
return EFI_TIMEOUT;

-}



-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
memory space.


The Mem.Read(), and Mem.Write() functions enable a driver to

access PCI
...
...
...
controller

registers in the PCI root bridge memory space.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI Root Bridge

on a
...
...
...
platform might require.


@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operation.
@param[in]   Address   The base address of the memory operation.

The
...
...
...
caller is

                     responsible for aligning the Address if required.


@param[in]   Count     The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at Address.


@param[out]  Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMemRead (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
OUT    VOID                                   *Buffer
)

-{

return RootBridgeIoMemRW (This, FALSE, Width, Address, Count,

Buffer);
...
...
...
-}



-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
memory space.


The Mem.Read(), and Mem.Write() functions enable a driver to

access PCI
...
...
...
controller

registers in the PCI root bridge memory space.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI Root Bridge

on a
...
...
...
platform might require.


@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operation.
@param[in]   Address   The base address of the memory operation.

The
...
...
...
caller is

                     responsible for aligning the Address if required.


@param[in]   Count     The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at Address.


@param[in]   Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.
-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMemWrite (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
IN     VOID                                   *Buffer
)

-{

return RootBridgeIoMemRW (This, TRUE, Width, Address, Count,

Buffer);
...
...
...
-}



-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
I/O space.


@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width       Signifies the width of the memory

operations.
...
...
...
...

@param[in]   Address     The base address of the I/O operation. The

caller is
...
...
...
responsible for

                       aligning the Address if required.


@param[in]   Count       The number of I/O operations to perform.

Bytes
...
...
...
moved is Width

                       size * Count, starting at Address.


@param[out]  Buffer      For read operations, the destination buffer

to
...
...
...
...
store the results. For

                       write operations, the source buffer to write data from.



@retval EFI_SUCCESS              The data was read from or written to

the
...
PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoIoRead (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN     UINT64                                 Address,
IN     UINTN                                  Count,
OUT    VOID                                   *Buffer
)

-{

return RootBridgeIoIoRW (This, FALSE, Width, Address, Count,

Buffer);
...
...
...
...
-}



-/**

Enables a PCI driver to access PCI controller registers in the PCI root

bridge
...
...
...
I/O space.


@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width       Signifies the width of the memory

operations.
...
...
...
...

@param[in]   Address     The base address of the I/O operation. The

caller is
...
...
...
responsible for

                       aligning the Address if required.


@param[in]   Count       The number of I/O operations to perform.

Bytes
...
...
...
moved is Width

                       size * Count, starting at Address.


@param[in]   Buffer       For read operations, the destination buffer

to
...
store
...
...
...
the results. For

                       write operations, the source buffer to write data from.



@retval EFI_SUCCESS              The data was read from or written to

the
...
PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoIoWrite (

IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL         *This,
IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH   Width,
IN       UINT64                                  Address,
IN       UINTN                                   Count,
IN       VOID                                    *Buffer
)

-{

return RootBridgeIoIoRW (This, TRUE, Width, Address, Count,

Buffer);
...
...
...
...
-}



-/**

Enables a PCI driver to copy one region of PCI root bridge memory

space to
...
...
...
another region of PCI

root bridge memory space.

The CopyMem() function enables a PCI driver to copy one region of

PCI
...
...
...
root bridge memory

space to another region of PCI root bridge memory space. This is

especially
...
...
...
useful for video scroll

operation on a memory mapped video buffer.
The memory operations are carried out exactly as requested. The

caller is
...
...
...
responsible for satisfying

any alignment and memory width restrictions that a PCI root bridge

on
...
a
...
...
...
platform might require.


@param[in] This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.

@param[in] Width       Signifies the width of the memory operations.
@param[in] DestAddress The destination address of the memory

operation. The caller is

                     responsible for aligning the DestAddress if required.


@param[in] SrcAddress  The source address of the memory

operation. The
...
...
...
caller is

                     responsible for aligning the SrcAddress if required.


@param[in] Count       The number of memory operations to

perform.
...
...
...
...
Bytes moved is

                     Width size * Count, starting at DestAddress and



SrcAddress.
...
...
...


@retval  EFI_SUCCESS             The data was copied from one memory

region
...
...
...
to another memory region.

@retval  EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.

@retval  EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoCopyMem (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL              *This,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH        Width,
IN UINT64                                       DestAddress,
IN UINT64                                       SrcAddress,
IN UINTN                                        Count
)

-{

EFI_STATUS  Status;
BOOLEAN     Direction;
UINTN       Stride;
UINTN       Index;
UINT64      Result;

if ((UINT32)Width > EfiPciWidthUint64) {
return EFI_INVALID_PARAMETER;
}

if (DestAddress == SrcAddress) {
return EFI_SUCCESS;
}

Stride = (UINTN)(1 << Width);

Direction = TRUE;
if ((DestAddress > SrcAddress) && (DestAddress < (SrcAddress +

Count *
...
...
...
Stride))) {

Direction   = FALSE;
SrcAddress  = SrcAddress  + (Count-1) * Stride;
DestAddress = DestAddress + (Count-1) * Stride;
}

for (Index = 0;Index < Count;Index++) {
Status = RootBridgeIoMemRead (
          This,


          Width,


          SrcAddress,


          1,


          &Result


          );


if (EFI_ERROR (Status)) {
 return Status;


}
Status = RootBridgeIoMemWrite (
          This,


          Width,


          DestAddress,


          1,


          &Result


          );


if (EFI_ERROR (Status)) {
 return Status;


}
if (Direction) {
 SrcAddress  += Stride;


 DestAddress += Stride;


} else {
 SrcAddress  -= Stride;


 DestAddress -= Stride;


}
}
return EFI_SUCCESS;

-}



-/**

Enables a PCI driver to access PCI controller registers in a PCI root

bridge's
...
...
...
configuration space.


The Pci.Read() and Pci.Write() functions enable a driver to access PCI

configuration

registers for a PCI controller.
The PCI Configuration operations are carried out exactly as

requested.
...
The
...
...
...
caller is responsible for

any alignment and PCI configuration width issues that a PCI Root

Bridge on
...
...
...
a platform might

require.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The address within the PCI configuration

space
...
for
...
...
...
the PCI controller.

@param[in]   Count     The number of PCI configuration operations to

perform. Bytes

                     moved is Width size * Count, starting at Address.


@param[out]  Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPciRead (

IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN       UINT64                                 Address,
IN       UINTN                                  Count,
OUT      VOID                                   *Buffer
)

-{

return RootBridgeIoPciRW (This, FALSE, Width, Address, Count,

Buffer);
...
...
...
-}



-/**

Enables a PCI driver to access PCI controller registers in a PCI root

bridge's
...
...
...
configuration space.


The Pci.Read() and Pci.Write() functions enable a driver to access PCI

configuration

registers for a PCI controller.
The PCI Configuration operations are carried out exactly as

requested.
...
The
...
...
...
caller is responsible for

any alignment and PCI configuration width issues that a PCI Root

Bridge on
...
...
...
a platform might

require.

@param[in]   This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]   Width     Signifies the width of the memory operations.
@param[in]   Address   The address within the PCI configuration

space
...
for
...
...
...
the PCI controller.

@param[in]   Count     The number of PCI configuration operations to

perform. Bytes

                     moved is Width size * Count, starting at Address.


@param[in]   Buffer    For read operations, the destination buffer to

store
...
...
...
the results. For

                     write operations, the source buffer to write data from.



@retval EFI_SUCCESS            The data was read from or written to the

PCI
...
...
...
root bridge.

@retval EFI_INVALID_PARAMETER Width is invalid for this PCI root

bridge.
...
...
...

@retval EFI_INVALID_PARAMETER Buffer is NULL.
@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoPciWrite (

IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL        *This,
IN       EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH  Width,
IN       UINT64                                 Address,
IN       UINTN                                  Count,
IN       VOID                                   *Buffer
)

-{

return RootBridgeIoPciRW (This, TRUE, Width, Address, Count,

Buffer);
...
...
...
...
-}



-/**

Provides the PCI controller-specific addresses required to access

system
...
...
...
memory from a

DMA bus master.

The Map() function provides the PCI controller specific addresses

needed
...
...
...
to access system

memory. This function is used to map system memory for PCI bus

master
...
...
...
DMA accesses.


@param[in]       This            A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]       Operation       Indicates if the bus master is going to

read or
...
...
...
write to system memory.

@param[in]       HostAddress     The system memory address to map

to
...
the
...
...
...
PCI controller.

@param[in, out]  NumberOfBytes   On input the number of bytes to

map.
...
...
...
On output the number of bytes that were mapped.

@param[out]      DeviceAddress   The resulting map address for the

bus
...
...
...
master PCI controller to use

                               to access the system memory's HostAddress.


@param[out]      Mapping         The value to pass to Unmap() when

the
...
bus
...
...
...
master DMA operation is complete.


@retval EFI_SUCCESS            The range was mapped for the returned

NumberOfBytes.

@retval EFI_INVALID_PARAMETER Operation is invalid.
@retval EFI_INVALID_PARAMETER HostAddress is NULL.
@retval EFI_INVALID_PARAMETER NumberOfBytes is NULL.
@retval EFI_INVALID_PARAMETER DeviceAddress is NULL.
@retval EFI_INVALID_PARAMETER Mapping is NULL.
@retval EFI_UNSUPPORTED        The HostAddress cannot be mapped

as a
...
...
...
common buffer.

@retval EFI_DEVICE_ERROR       The system hardware could not map

the
...
...
...
requested address.

@retval EFI_OUT_OF_RESOURCES The request could not be

completed
...
...
...
due to a lack of resources.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoMap (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL            *This,
IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION

Operation,
...
...
...
...

IN     VOID                                       *HostAddress,
IN OUT UINTN                                      *NumberOfBytes,
OUT    EFI_PHYSICAL_ADDRESS                       *DeviceAddress,
OUT    VOID                                       **Mapping
)

-{

EFI_STATUS            Status;
EFI_PHYSICAL_ADDRESS  PhysicalAddress;
MAP_INFO              *MapInfo;


-DEBUG((EFI_D_ERROR, "RootBridgeIoMap() - %d\n", __LINE__));

if (HostAddress == NULL || NumberOfBytes == NULL ||

DeviceAddress ==
...
...
...
NULL || Mapping == NULL) {

return EFI_INVALID_PARAMETER;
}

//
// Initialize the return values to their defaults
//
*Mapping = NULL;

//
// Make sure that Operation is valid
//
if ((UINT32)Operation >= EfiPciOperationMaximum) {
return EFI_INVALID_PARAMETER;
}

//
// Most PCAT like chipsets can not handle performing DMA above

4GB.
...
...
...
...

// If any part of the DMA transfer being mapped is above 4GB, then
// map the DMA transfer to a buffer below 4GB.
//
PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;
if ((PhysicalAddress + *NumberOfBytes) > 0x100000000ULL) {

//
// Common Buffer operations can not be remapped.  If the

common
...
...
...
...
buffer

// if above 4GB, then it is not possible to generate a mapping, so

return
...
...
...

// an error.
//
if (Operation == EfiPciOperationBusMasterCommonBuffer ||

Operation
...
...
...
== EfiPciOperationBusMasterCommonBuffer64) {

 return EFI_UNSUPPORTED;


}

//
// Allocate a MAP_INFO structure to remember the mapping when

Unmap() is

// called later.
//
Status = gBS->AllocatePool (
               EfiBootServicesData,


               sizeof(MAP_INFO),


               (VOID **)&MapInfo


               );


if (EFI_ERROR (Status)) {
 *NumberOfBytes = 0;


 return Status;


}

//
// Return a pointer to the MAP_INFO structure in Mapping
//
*Mapping = MapInfo;

//
// Initialize the MAP_INFO structure
//
MapInfo->Operation         = Operation;
MapInfo->NumberOfBytes     = *NumberOfBytes;
MapInfo->NumberOfPages     =

EFI_SIZE_TO_PAGES(*NumberOfBytes);
...
...
...

MapInfo->HostAddress       = PhysicalAddress;
MapInfo->MappedHostAddress = 0x00000000ffffffff;

//
// Allocate a buffer below 4GB to map the transfer to.
//
Status = gBS->AllocatePages (
               AllocateMaxAddress,


               EfiBootServicesData,


               MapInfo->NumberOfPages,


               &MapInfo->MappedHostAddress


               );


if (EFI_ERROR (Status)) {
 gBS->FreePool (MapInfo);


 *NumberOfBytes = 0;


 return Status;


}

//
// If this is a read operation from the Bus Master's point of view,
// then copy the contents of the real buffer into the mapped buffer
// so the Bus Master can read the contents of the real buffer.
//
if (Operation == EfiPciOperationBusMasterRead || Operation ==

EfiPciOperationBusMasterRead64) {

 CopyMem (


   (VOID *)(UINTN)MapInfo->MappedHostAddress,


   (VOID *)(UINTN)MapInfo->HostAddress,


   MapInfo->NumberOfBytes


   );


}

//
// The DeviceAddress is the address of the maped buffer below

4GB
...
...
...
...

//
*DeviceAddress = MapInfo->MappedHostAddress;
} else {
//
// The transfer is below 4GB, so the DeviceAddress is simply the

HostAddress

//
*DeviceAddress = PhysicalAddress;
}

return EFI_SUCCESS;

-}



-/**

Completes the Map() operation and releases any corresponding

resources.


The Unmap() function completes the Map() operation and releases

any
...
...
...
corresponding resources.

If the operation was an EfiPciOperationBusMasterWrite or
EfiPciOperationBusMasterWrite64, the data is committed to the

target
...
...
...
...
system memory.

Any resources used for the mapping are freed.

@param[in] This      A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in] Mapping   The mapping value returned from Map().

@retval EFI_SUCCESS            The range was unmapped.
@retval EFI_INVALID_PARAMETER Mapping is not a value that was

returned by Map().

@retval EFI_DEVICE_ERROR       The data was not committed to the

target
...
...
...
system memory.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoUnmap (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN VOID                             *Mapping
)

-{

MAP_INFO    *MapInfo;


-DEBUG((EFI_D_ERROR, "RootBridgeIoUnmap() - %d\n", __LINE__));

//
// See if the Map() operation associated with this Unmap() required

a
...
...
...
...
mapping buffer.

// If a mapping buffer was not required, then this function simply

returns
...
...
...
EFI_SUCCESS.

//
if (Mapping != NULL) {
//
// Get the MAP_INFO structure from Mapping
//
MapInfo = (MAP_INFO *)Mapping;

//
// If this is a write operation from the Bus Master's point of view,
// then copy the contents of the mapped buffer into the real buffer
// so the processor can read the contents of the real buffer.
//
if (MapInfo->Operation == EfiPciOperationBusMasterWrite ||

MapInfo-
...
...
...
...
Operation == EfiPciOperationBusMasterWrite64) {

 CopyMem (


   (VOID *)(UINTN)MapInfo->HostAddress,


   (VOID *)(UINTN)MapInfo->MappedHostAddress,


   MapInfo->NumberOfBytes


   );


}

//
// Free the mapped buffer and the MAP_INFO structure.
//
gBS->FreePages (MapInfo->MappedHostAddress, MapInfo-

...
NumberOfPages);

gBS->FreePool (Mapping);
}
return EFI_SUCCESS;

-}



-/**

Allocates pages that are suitable for an

EfiPciOperationBusMasterCommonBuffer or

EfiPciOperationBusMasterCommonBuffer64 mapping.

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Type        This parameter is not used and must be ignored.
@param MemoryType  The type of memory to allocate,

EfiBootServicesData or EfiRuntimeServicesData.

@param Pages       The number of pages to allocate.
@param HostAddress A pointer to store the base system memory

address
...
...
...
of the allocated range.

@param Attributes  The requested bit mask of attributes for the

allocated
...
...
...
range. Only

                 the attributes



EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE,
...
...
...
EFI_PCI_ATTRIBUTE_MEMORY_CACHED,

                 and EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE may be



used
...
...
...
with this function.


@retval EFI_SUCCESS            The requested memory pages were

allocated.
...
...
...

@retval EFI_INVALID_PARAMETER MemoryType is invalid.
@retval EFI_INVALID_PARAMETER HostAddress is NULL.
@retval EFI_UNSUPPORTED        Attributes is unsupported. The only

legal
...
...
...
attribute bits are

                             MEMORY_WRITE_COMBINE, MEMORY_CACHED,



and
...
...
...
...
DUAL_ADDRESS_CYCLE.

@retval EFI_OUT_OF_RESOURCES The memory pages could not be

allocated.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoAllocateBuffer (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN  EFI_ALLOCATE_TYPE                Type,
IN  EFI_MEMORY_TYPE                  MemoryType,
IN  UINTN                            Pages,
OUT VOID                             **HostAddress,
IN  UINT64                           Attributes
)

-{

EFI_STATUS            Status;
EFI_PHYSICAL_ADDRESS  PhysicalAddress;


-DEBUG((EFI_D_ERROR, "RootBridgeIoAllocateBuffer() - %d\n",
__LINE__));
...
...
...

//
// Validate Attributes
//
if ((Attributes &

EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER) !=
...
...
...

{


return EFI_UNSUPPORTED;
}

//
// Check for invalid inputs
//
if (HostAddress == NULL) {
return EFI_INVALID_PARAMETER;
}

//
// The only valid memory types are EfiBootServicesData and

EfiRuntimeServicesData

//
if (MemoryType != EfiBootServicesData && MemoryType !=

EfiRuntimeServicesData) {

return EFI_INVALID_PARAMETER;
}

//
// Limit allocations to memory below 4GB
//
PhysicalAddress = (EFI_PHYSICAL_ADDRESS)(0xffffffff);

Status = gBS->AllocatePages (AllocateMaxAddress, MemoryType,

Pages,
...
...
...
&PhysicalAddress);

if (EFI_ERROR (Status)) {
return Status;
}

*HostAddress = (VOID *)(UINTN)PhysicalAddress;

return EFI_SUCCESS;

-}



-/**

Frees memory that was allocated with AllocateBuffer().

The FreeBuffer() function frees memory that was allocated with

AllocateBuffer().


@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Pages       The number of pages to free.
@param HostAddress The base system memory address of the

allocated
...
...
...
range.


@retval EFI_SUCCESS            The requested memory pages were

freed.
...
...
...
...

@retval EFI_INVALID_PARAMETER The memory range specified by

HostAddress and Pages

                             was not allocated with AllocateBuffer().




-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoFreeBuffer (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN  UINTN                            Pages,
OUT VOID                             *HostAddress
)

-{
-DEBUG((EFI_D_ERROR, "RootBridgeIoFreeBuffer() - %d\n",
__LINE__));
...
...
...
...

return gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN)

HostAddress,
...
...
...
Pages);
-}



-/**

Flushes all PCI posted write transactions from a PCI host bridge to

system
...
...
...
memory.


The Flush() function flushes any PCI posted write transactions from a

PCI
...
...
...
host bridge to system

memory. Posted write transactions are generated by PCI bus

masters
...
...
...
...
when they perform write

transactions to target addresses in system memory.
This function does not flush posted write transactions from any PCI

bridges. A PCI controller

specific action must be taken to guarantee that the posted write

transactions have been flushed from

the PCI controller and from all the PCI bridges into the PCI host

bridge.
...
This
...
...
...
is typically done with

a PCI read transaction from the PCI controller prior to calling Flush().

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...


@retval EFI_SUCCESS        The PCI posted write transactions were

flushed
...
...
...
from the PCI host

                         bridge to system memory.


@retval EFI_DEVICE_ERROR   The PCI posted write transactions were

not
...
...
...
flushed from the PCI

                         host bridge due to a hardware error.




-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoFlush (

IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL           *This
)

-{
-DEBUG((EFI_D_ERROR, "RootBridgeIoFlush() - %d\n", __LINE__));

//
// not supported yet
//
return EFI_SUCCESS;

-}



-/**

Gets the attributes that a PCI root bridge supports setting with

SetAttributes(), and the

attributes that a PCI root bridge is currently using.

The GetAttributes() function returns the mask of attributes that this

PCI
...
...
...
root bridge supports

and the mask of attributes that the PCI root bridge is currently using.

@param This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
...
...
...

@param Supported   A pointer to the mask of attributes that this PCI

root
...
...
...
bridge

                 supports setting with SetAttributes().


@param Attributes  A pointer to the mask of attributes that this PCI

root
...
...
...
bridge is

                 currently using.



@retval  EFI_SUCCESS           If Supports is not NULL, then the

attributes
...
that
...
...
...
the PCI root

                             bridge supports is returned in Supports. If Attributes



is
...
...
...
...

                             not NULL, then the attributes that the PCI root bridge



is
...
...
...
currently

                             using is returned in Attributes.


@retval  EFI_INVALID_PARAMETER Both Supports and Attributes

are
...
...
...
...
NULL.



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoGetAttributes (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
OUT UINT64                           *Supported,
OUT UINT64                           *Attributes
)

-{

PCI_ROOT_BRIDGE_INSTANCE *PrivateData;

PrivateData =

DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);


if (Attributes == NULL && Supported == NULL) {
return EFI_INVALID_PARAMETER;
}

//
// Set the return value for Supported and Attributes
//
if (Supported != NULL) {
*Supported  = PrivateData->Supports;
}

if (Attributes != NULL) {
*Attributes = PrivateData->Attributes;
}

return EFI_SUCCESS;

-}



-/**

Sets attributes for a resource range on a PCI root bridge.

The SetAttributes() function sets the attributes specified in

Attributes
...
for
...
...
...
the PCI root

bridge on the resource range specified by ResourceBase and

ResourceLength. Since the

granularity of setting these attributes may vary from resource type

to
...
...
...
...
resource type, and from

platform to platform, the actual resource range and the one passed

in
...
by
...
...
...
the caller may differ. As a

result, this function may set the attributes specified by Attributes on

a
...
...
...
...
larger resource range

than the caller requested. The actual range is returned in

ResourceBase
...
...
...
and

ResourceLength. The caller is responsible for verifying that the actual

range
...
...
...
for which the

attributes were set is acceptable.

@param[in]       This            A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[in]       Attributes      The mask of attributes to set. If the

attribute
...
...
...
bit

                               MEMORY_WRITE_COMBINE, MEMORY_CACHED, or


                               MEMORY_DISABLE is set, then the resource range is



specified by

                               ResourceBase and ResourceLength. If


                               MEMORY_WRITE_COMBINE, MEMORY_CACHED,



and
...
...
...
...

                               MEMORY_DISABLE are not set, then ResourceBase



and
...
...
...

                               ResourceLength are ignored, and may be NULL.


@param[in, out]  ResourceBase    A pointer to the base address of

the
...
...
...
...
resource range to be modified

                               by the attributes specified by Attributes.


@param[in, out]  ResourceLength  A pointer to the length of the

resource
...
...
...
range to be modified by the

                               attributes specified by Attributes.



@retval  EFI_SUCCESS     The current configuration of this PCI root

bridge
...
...
...
was returned in Resources.

@retval  EFI_UNSUPPORTED The current configuration of this PCI

root
...
...
...
...
bridge could not be retrieved.

@retval  EFI_INVALID_PARAMETER Invalid pointer of

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoSetAttributes (

IN     EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL  *This,
IN     UINT64                           Attributes,
IN OUT UINT64                           *ResourceBase,
IN OUT UINT64                           *ResourceLength
)

-{

PCI_ROOT_BRIDGE_INSTANCE            *PrivateData;

PrivateData =

DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);


if (Attributes != 0) {
if ((Attributes & (~(PrivateData->Supports))) != 0) {
 return EFI_UNSUPPORTED;


}
}

//
// This is a generic driver for a PC-AT class system.  It does not have

any
...
...
...
...

// chipset specific knowlegde, so none of the attributes can be set or
// cleared.  Any attempt to set attribute that are already set will

succeed,
...
...
...

// and any attempt to set an attribute that is not supported will fail.
//
if (Attributes & (~PrivateData->Attributes)) {
return EFI_UNSUPPORTED;
}

return EFI_SUCCESS;

-}



-/**

Retrieves the current resource settings of this PCI root bridge in the

form
...
...
...
of a set of ACPI 2.0

resource descriptors.

There are only two resource descriptor types from the ACPI

Specification
...
...
...
that may be used to

describe the current resources allocated to a PCI root bridge. These

are the
...
...
...
QWORD Address

Space Descriptor (ACPI 2.0 Section 6.4.3.5.1), and the End Tag (ACPI

2.0
...
...
...
...
Section 6.4.2.8). The

QWORD Address Space Descriptor can describe memory, I/O, and

bus
...
...
...
...
number ranges for dynamic

or fixed resources. The configuration of a PCI root bridge is

described
...
with
...
...
...
one or more QWORD

Address Space Descriptors followed by an End Tag.

@param[in]   This        A pointer to the

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.

@param[out]  Resources   A pointer to the ACPI 2.0 resource

descriptors
...
...
...
that describe the

                       current configuration of this PCI root bridge. The storage



for
...
...
...
the

                       ACPI 2.0 resource descriptors is allocated by this



function.
...
The
...
...
...

                       caller must treat the return buffer as read-only data,



and
...
the
...
...
...
buffer

                       must not be freed by the caller.



@retval  EFI_SUCCESS     The current configuration of this PCI root

bridge
...
...
...
was returned in Resources.

@retval  EFI_UNSUPPORTED The current configuration of this PCI

root
...
...
...
...
bridge could not be retrieved.

@retval  EFI_INVALID_PARAMETER Invalid pointer of

EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL



-**/
-EFI_STATUS
-EFIAPI
-RootBridgeIoConfiguration (

IN  EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL     *This,
OUT VOID                                **Resources
)

-{

PCI_ROOT_BRIDGE_INSTANCE              *PrivateData;
UINTN                                 Index;

PrivateData =

DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS
...
...
...
...
(This);


for (Index = 0; Index < TypeMax; Index++) {
if (PrivateData->ResAllocNode[Index].Status == ResAllocated) {
 Configuration.SpaceDesp[Index].AddrRangeMin = PrivateData-



...
ResAllocNode[Index].Base;

 Configuration.SpaceDesp[Index].AddrRangeMax = PrivateData-



...
ResAllocNode[Index].Base + PrivateData-
ResAllocNode[Index].Length - 1;
...
...

 Configuration.SpaceDesp[Index].AddrLen      = PrivateData-



...
ResAllocNode[Index].Length;

}
}

*Resources = &Configuration;
return EFI_SUCCESS;

-}
diff --git a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
index c863413519a0..f9fdb5ce335c 100644
--- a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
+++ b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.dsc
@@ -117,9 +117,15 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
SerialPortLib|ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.
...
...
...
...
inf
#

# PCI support
#


PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibP
...
...
...
...
ci.inf



PciLib|MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
...
...
...
...



PciHostBridgeLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdStyxP
...
...
...
...
ciHostBridgeLib/AmdStyxPciHostBridgeLib.inf


#
# Styx specific libraries
#




PciLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdStyxPciLib/AmdS
...
...
...
...
tyxPciLib.inf
AmdSataInit|AmdModulePkg/Library/AmdSataInitLib/AmdSataInitLib.inf
...
...
...
AmdStyxHelperLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdSty
...
...
...
...
xHelperLib/AmdStyxHelperLib.inf
AmdStyxAcpiLib|OpenPlatformPkg/Platforms/AMD/Styx/AcpiTables/AcpiTa
...
...
...
...
bles.inf
@@ -604,14 +610,12 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
  #
  OpenPlatformPkg/Platforms/AMD/Styx/Drivers/FdtDxe/FdtDxe.inf

# Required by PCI
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf
#
# PCI support
#
AmdModulePkg/Gionb/Gionb.inf


OpenPlatformPkg/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBr
...
...
...
...
idgeDxe.inf

ArmPlatformPkg/Drivers/CpuIo2Dxe/ArmPciCpuIo2Dxe.inf

MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
#


diff --git a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf
b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf
index 6a50e2145e95..9668372c0228 100644
--- a/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf
+++ b/Platforms/AMD/Styx/HuskyBoard/HuskyBoard.fdf
@@ -143,14 +143,12 @@ READ_LOCK_STATUS   = TRUE
    SECTION RAW =
OpenPlatformPkg/Platforms/AMD/Styx/FdtBlob/styx-
...
...
...
husky.dtb
  }

# Required by PCI
INF UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf
#
# PCI support
#
INF AmdModulePkg/Gionb/Gionb.inf
INF

OpenPlatformPkg/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBr
...
...
...
...
idgeDxe.inf

INF ArmPlatformPkg/Drivers/CpuIo2Dxe/ArmPciCpuIo2Dxe.inf
INF

MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
...
...
...
...
INF MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
#
diff --git a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
index eb8c9a4e27ee..20db518454a0 100644
--- a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
+++ b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.dsc
@@ -118,9 +118,15 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
SerialPortLib|ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.
...
...
...
...
inf
#

# PCI support
#


PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibP
...
...
...
...
ci.inf



PciLib|MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
...
...
...
...



PciHostBridgeLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdStyxP
...
...
...
...
ciHostBridgeLib/AmdStyxPciHostBridgeLib.inf


#
# Styx specific libraries
#




PciLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdStyxPciLib/AmdS
...
...
...
...
tyxPciLib.inf
AmdSataInit|AmdModulePkg/Library/AmdSataInitLib/AmdSataInitLib.inf
...
...
...
AmdStyxHelperLib|OpenPlatformPkg/Platforms/AMD/Styx/Library/AmdSty
...
...
...
...
xHelperLib/AmdStyxHelperLib.inf
AmdStyxAcpiLib|OpenPlatformPkg/Platforms/AMD/Styx/AcpiTables/AcpiTa
...
...
...
...
bles.inf
@@ -614,14 +620,12 @@ DEFINE TRANS_CODE = $(EL3_TO_EL2)
  #
  OpenPlatformPkg/Platforms/AMD/Styx/Drivers/FdtDxe/FdtDxe.inf

# Required by PCI
UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf
#
# PCI support
#
AmdModulePkg/Gionb/Gionb.inf


OpenPlatformPkg/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBr
...
...
...
...
idgeDxe.inf

ArmPlatformPkg/Drivers/CpuIo2Dxe/ArmPciCpuIo2Dxe.inf

MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
#


diff --git a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf
b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf
index 898bf3ff5a3c..7677718b76da 100644
--- a/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf
+++ b/Platforms/AMD/Styx/OverdriveBoard/OverdriveBoard.fdf
@@ -143,14 +143,12 @@ READ_LOCK_STATUS   = TRUE
    SECTION RAW =
OpenPlatformPkg/Platforms/AMD/Styx/FdtBlob/styx-
...
...
...
overdrive.dtb
  }

# Required by PCI
INF UefiCpuPkg/CpuIo2Dxe/CpuIo2Dxe.inf
#
# PCI support
#
INF AmdModulePkg/Gionb/Gionb.inf
INF

OpenPlatformPkg/Platforms/AMD/Styx/Drivers/PciHostBridgeDxe/PciHostBr
...
...
...
...
idgeDxe.inf

INF ArmPlatformPkg/Drivers/CpuIo2Dxe/ArmPciCpuIo2Dxe.inf
INF

MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
...
...
...
...
INF MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
#
2.7.4

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