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-rw-r--r--PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c2
-rw-r--r--PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.h16
-rw-r--r--PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf8
-rw-r--r--PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c743
4 files changed, 436 insertions, 333 deletions
diff --git a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c
index adb9fe7cd3..dc8e79b11a 100644
--- a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c
+++ b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c
@@ -51,7 +51,7 @@ EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath[1][1] = {
};
PCI_ROOT_BRIDGE_RESOURCE_APPETURE mResAppeture[1][1] = {
- {0, 0, 0, 0xffffffff, 0, 1 << 16}
+ {0, 0xff, 0x80000000, 0xffffffff, 0, 0xffff}
};
EFI_HANDLE mDriverImageHandle;
diff --git a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.h b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.h
index 8c0acc6103..42a3d591c0 100644
--- a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.h
+++ b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.h
@@ -1,7 +1,7 @@
/** @file
The Header file of the Pci Host Bridge Driver
- Copyright (c) 2008 - 2009, Intel Corporation. All rights reserved.<BR>
+ 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
@@ -22,7 +22,6 @@
#include <Protocol/PciHostBridgeResourceAllocation.h>
#include <Protocol/PciRootBridgeIo.h>
-#include <Protocol/CpuIo2.h>
#include <Protocol/Metronome.h>
#include <Protocol/DevicePath.h>
@@ -35,6 +34,8 @@
#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.
@@ -42,6 +43,16 @@
//
#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;
@@ -219,7 +230,6 @@ typedef struct {
UINT64 MemLimit;
UINT64 IoLimit;
- EFI_LOCK PciLock;
UINTN PciAddress;
UINTN PciData;
diff --git a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
index d6315de606..c5fe0fa61a 100644
--- a/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
+++ b/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridgeDxe.inf
@@ -35,7 +35,9 @@
BaseLib
DebugLib
DevicePathLib
-
+ IoLib
+ PciLib
+
[Sources]
PciHostBridge.c
PciRootBridgeIo.c
@@ -44,9 +46,9 @@
[Protocols]
gEfiPciHostBridgeResourceAllocationProtocolGuid
gEfiPciRootBridgeIoProtocolGuid
- gEfiCpuIo2ProtocolGuid
gEfiMetronomeArchProtocolGuid
gEfiDevicePathProtocolGuid
[depex]
- gEfiCpuIo2ProtocolGuid AND gEfiMetronomeArchProtocolGuid
+ gEfiMetronomeArchProtocolGuid
+
diff --git a/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c b/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c
index c85ad93beb..edbe4a03b2 100644
--- a/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c
+++ b/PcAtChipsetPkg/PciHostBridgeDxe/PciRootBridgeIo.c
@@ -573,41 +573,45 @@ RootBridgeIoConfiguration (
);
//
-// Sub Function Prototypes
+// Memory Controller Pci Root Bridge Io Module Variables
//
-/**
- 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[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_METRONOME_ARCH_PROTOCOL *mMetronome;
-**/
-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 UserAddress,
- IN UINTN Count,
- IN OUT VOID *UserBuffer
- );
+//
+// 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
+};
//
-// Memory Controller Pci Root Bridge Io Module Variables
+// Lookup table for increment values based on transfer widths
//
-EFI_METRONOME_ARCH_PROTOCOL *mMetronome;
-EFI_CPU_IO2_PROTOCOL *mCpuIo;
+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
+};
/**
@@ -665,8 +669,6 @@ RootBridgeConstructor (
PrivateData->ResAllocNode[Index].Status = ResNone;
}
-
- EfiInitializeLock (&PrivateData->PciLock, TPL_HIGH_LEVEL);
PrivateData->PciAddress = 0xCF8;
PrivateData->PciData = 0xCFC;
@@ -706,9 +708,6 @@ RootBridgeConstructor (
Protocol->SegmentNumber = 0;
- Status = gBS->LocateProtocol (&gEfiCpuIo2ProtocolGuid, NULL, (VOID **)&mCpuIo);
- ASSERT_EFI_ERROR (Status);
-
Status = gBS->LocateProtocol (&gEfiMetronomeArchProtocolGuid, NULL, (VOID **)&mMetronome);
ASSERT_EFI_ERROR (Status);
@@ -716,6 +715,385 @@ RootBridgeConstructor (
}
/**
+ 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 (Width < EfiPciWidthUint8 || 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[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;
+ }
+ } 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;
+ }
+ }
+ }
+ 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[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;
+ }
+ } 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;
+ }
+ }
+ }
+ 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[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;
+ }
+ } else {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ *Uint8Buffer = PciRead8 (PcieRegAddr);
+ break;
+ case EfiPciWidthUint16:
+ *((UINT16 *)Uint8Buffer) = PciRead16 (PcieRegAddr);
+ break;
+ case EfiPciWidthUint32:
+ *((UINT32 *)Uint8Buffer) = PciRead32 (PcieRegAddr);
+ break;
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
Polls an address in memory mapped I/O space until an exit condition is met, or
a timeout occurs.
@@ -952,42 +1330,7 @@ RootBridgeIoMemRead (
IN OUT VOID *Buffer
)
{
- PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
- UINTN OldCount;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- //
- // Check memory access limit
- //
- if (Address < PrivateData->MemBase) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldWidth = Width;
- OldCount = Count;
-
- if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- Count = 1;
- }
-
- Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
-
- if (Address + (((UINTN)1 << Width) * Count) - 1 > PrivateData->MemLimit) {
- return EFI_INVALID_PARAMETER;
- }
-
- return mCpuIo->Mem.Read (mCpuIo, (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
- Address, OldCount, Buffer);
+ return RootBridgeIoMemRW (This, FALSE, Width, Address, Count, Buffer);
}
/**
@@ -1022,41 +1365,7 @@ RootBridgeIoMemWrite (
IN OUT VOID *Buffer
)
{
- PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
- UINTN OldCount;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- //
- // Check memory access limit
- //
- if (Address < PrivateData->MemBase) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldWidth = Width;
- OldCount = Count;
- if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- Count = 1;
- }
-
- Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
-
- if (Address + (((UINTN)1 << Width) * Count) - 1 > PrivateData->MemLimit) {
- return EFI_INVALID_PARAMETER;
- }
-
- return mCpuIo->Mem.Write (mCpuIo, (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
- Address, OldCount, Buffer);
+ return RootBridgeIoMemRW (This, TRUE, Width, Address, Count, Buffer);
}
/**
@@ -1087,52 +1396,7 @@ RootBridgeIoIoRead (
IN OUT VOID *Buffer
)
{
-
-
- UINTN AlignMask;
- PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
- UINTN OldCount;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- //AlignMask = (1 << Width) - 1;
- AlignMask = (1 << (Width & 0x03)) - 1;
-
- //
- // check Io access limit
- //
- if (Address < PrivateData->IoBase) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldWidth = Width;
- OldCount = Count;
- if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- Count = 1;
- }
-
- Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
-
- if (Address + (((UINTN)1 << Width) * Count) - 1 >= PrivateData->IoLimit) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Address & AlignMask) {
- return EFI_INVALID_PARAMETER;
- }
-
- return mCpuIo->Io.Read (mCpuIo, (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
- Address, OldCount, Buffer);
-
+ return RootBridgeIoIoRW (This, FALSE, Width, Address, Count, Buffer);
}
/**
@@ -1163,50 +1427,7 @@ RootBridgeIoIoWrite (
IN OUT VOID *Buffer
)
{
- UINTN AlignMask;
- PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
- UINTN OldCount;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- //AlignMask = (1 << Width) - 1;
- AlignMask = (1 << (Width & 0x03)) - 1;
-
- //
- // Check Io access limit
- //
- if (Address < PrivateData->IoBase) {
- return EFI_INVALID_PARAMETER;
- }
-
- OldWidth = Width;
- OldCount = Count;
- if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
- Count = 1;
- }
-
- Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
-
- if (Address + (((UINTN)1 << Width) * Count) - 1 >= PrivateData->IoLimit) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Address & AlignMask) {
- return EFI_INVALID_PARAMETER;
- }
-
- return mCpuIo->Io.Write (mCpuIo, (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
- Address, OldCount, Buffer);
-
+ return RootBridgeIoIoRW (This, TRUE, Width, Address, Count, Buffer);
}
/**
@@ -1331,17 +1552,6 @@ RootBridgeIoPciRead (
IN OUT VOID *Buffer
)
{
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Read Pci configuration space
- //
return RootBridgeIoPciRW (This, FALSE, Width, Address, Count, Buffer);
}
@@ -1378,17 +1588,6 @@ RootBridgeIoPciWrite (
IN OUT VOID *Buffer
)
{
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
- //
- // Write Pci configuration space
- //
return RootBridgeIoPciRW (This, TRUE, Width, Address, Count, Buffer);
}
@@ -1879,111 +2078,3 @@ RootBridgeIoConfiguration (
return EFI_SUCCESS;
}
-//
-// Internal function
-//
-/**
- 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[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 UserAddress,
- IN UINTN Count,
- IN OUT VOID *UserBuffer
- )
-{
- PCI_CONFIG_ACCESS_CF8 Pci;
- PCI_CONFIG_ACCESS_CF8 PciAligned;
- UINT32 InStride;
- UINT32 OutStride;
- UINTN PciData;
- UINTN PciDataStride;
- PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress;
-
- if (Width < 0 || Width >= EfiPciWidthMaximum) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((Width & 0x03) >= EfiPciWidthUint64) {
- return EFI_INVALID_PARAMETER;
- }
-
- PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(This);
-
- InStride = 1 << (Width & 0x03);
- OutStride = InStride;
- if (Width >= EfiCpuIoWidthFifoUint8 && Width <= EfiCpuIoWidthFifoUint64) {
- InStride = 0;
- }
-
- if (Width >= EfiCpuIoWidthFillUint8 && Width <= EfiCpuIoWidthFillUint64) {
- OutStride = 0;
- }
-
- CopyMem (&PciAddress, &UserAddress, sizeof(UINT64));
-
- if (PciAddress.ExtendedRegister > 0xFF) {
- return EFI_UNSUPPORTED;
- }
-
- if (PciAddress.ExtendedRegister != 0) {
- Pci.Bits.Reg = PciAddress.ExtendedRegister & 0xFF;
- } else {
- Pci.Bits.Reg = PciAddress.Register;
- }
-
- Pci.Bits.Func = PciAddress.Function;
- Pci.Bits.Dev = PciAddress.Device;
- Pci.Bits.Bus = PciAddress.Bus;
- Pci.Bits.Reserved = 0;
- Pci.Bits.Enable = 1;
-
- //
- // PCI Config access are all 32-bit alligned, but by accessing the
- // CONFIG_DATA_REGISTER (0xcfc) with different widths more cycle types
- // are possible on PCI.
- //
- // To read a byte of PCI config space you load 0xcf8 and
- // read 0xcfc, 0xcfd, 0xcfe, 0xcff
- //
- PciDataStride = Pci.Bits.Reg & 0x03;
-
- while (Count) {
- CopyMem (&PciAligned, &Pci, sizeof (PciAligned));
- PciAligned.Bits.Reg &= 0xfc;
- PciData = (UINTN)PrivateData->PciData + PciDataStride;
- EfiAcquireLock(&PrivateData->PciLock);
- This->Io.Write (This, EfiPciWidthUint32, PrivateData->PciAddress, 1, &PciAligned);
- if (Write) {
- This->Io.Write (This, Width, PciData, 1, UserBuffer);
- } else {
- This->Io.Read (This, Width, PciData, 1, UserBuffer);
- }
- EfiReleaseLock(&PrivateData->PciLock);
- UserBuffer = ((UINT8 *)UserBuffer) + OutStride;
- PciDataStride = (PciDataStride + InStride) % 4;
- Pci.Bits.Reg += InStride;
- Count -= 1;
- }
-
- return EFI_SUCCESS;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 12:13:03 +0000