/** @file
The PCI Root Bridge header file.
Copyright (c) 1999 - 2016, 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_ROOT_BRIDGE_H_
#define _PCI_ROOT_BRIDGE_H_
#include <PiDxe.h>
#include <IndustryStandard/Acpi.h>
#include <IndustryStandard/Pci.h>
//
// Driver Consumed Protocol Prototypes
//
#include <Protocol/Metronome.h>
#include <Protocol/CpuIo2.h>
#include <Protocol/DevicePath.h>
#include <Protocol/PciRootBridgeIo.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/PciSegmentLib.h>
#include "PciHostResource.h"
typedef enum {
IoOperation,
MemOperation,
PciOperation
} OPERATION_TYPE;
#define MAP_INFO_SIGNATURE SIGNATURE_32 ('_', 'm', 'a', 'p')
typedef struct {
UINT32 Signature;
LIST_ENTRY Link;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation;
UINTN NumberOfBytes;
UINTN NumberOfPages;
EFI_PHYSICAL_ADDRESS HostAddress;
EFI_PHYSICAL_ADDRESS MappedHostAddress;
} MAP_INFO;
#define MAP_INFO_FROM_LINK(a) CR (a, MAP_INFO, Link, MAP_INFO_SIGNATURE)
#define PCI_ROOT_BRIDGE_SIGNATURE SIGNATURE_32 ('_', 'p', 'r', 'b')
typedef struct {
UINT32 Signature;
LIST_ENTRY Link;
EFI_HANDLE Handle;
UINT64 AllocationAttributes;
UINT64 Attributes;
UINT64 Supports;
PCI_RES_NODE ResAllocNode[TypeMax];
PCI_ROOT_BRIDGE_APERTURE Bus;
PCI_ROOT_BRIDGE_APERTURE Io;
PCI_ROOT_BRIDGE_APERTURE Mem;
PCI_ROOT_BRIDGE_APERTURE PMem;
PCI_ROOT_BRIDGE_APERTURE MemAbove4G;
PCI_ROOT_BRIDGE_APERTURE PMemAbove4G;
BOOLEAN DmaAbove4G;
BOOLEAN NoExtendedConfigSpace;
VOID *ConfigBuffer;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
CHAR16 *DevicePathStr;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL RootBridgeIo;
BOOLEAN ResourceSubmitted;
LIST_ENTRY Maps;
} PCI_ROOT_BRIDGE_INSTANCE;
#define ROOT_BRIDGE_FROM_THIS(a) CR (a, PCI_ROOT_BRIDGE_INSTANCE, RootBridgeIo, PCI_ROOT_BRIDGE_SIGNATURE)
#define ROOT_BRIDGE_FROM_LINK(a) CR (a, PCI_ROOT_BRIDGE_INSTANCE, Link, PCI_ROOT_BRIDGE_SIGNATURE)
/**
Construct the Pci Root Bridge instance.
@param Bridge The root bridge instance.
@return The pointer to PCI_ROOT_BRIDGE_INSTANCE just created
or NULL if creation fails.
**/
PCI_ROOT_BRIDGE_INSTANCE *
CreateRootBridge (
IN PCI_ROOT_BRIDGE *Bridge
);
//
// Protocol Member Function Prototypes
//
/**
Poll an address in memory mapped space until an exit condition is met
or a timeout occurs.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Width - Width of the memory operation.
@param Address - The base address of the memory operation.
@param Mask - Mask used for polling criteria.
@param Value - Comparison value used for polling exit criteria.
@param Delay - Number of 100ns units to poll.
@param Result - Pointer to the last value read from memory location.
@retval EFI_SUCCESS - Success.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
@retval EFI_TIMEOUT - Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES - Fail due to 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
)
;
/**
Poll an address in I/O space until an exit condition is met
or a timeout occurs.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Width - Width of I/O operation.
@param Address - The base address of the I/O operation.
@param Mask - Mask used for polling criteria.
@param Value - Comparison value used for polling exit criteria.
@param Delay - Number of 100ns units to poll.
@param Result - Pointer to the last value read from memory location.
@retval EFI_SUCCESS - Success.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
@retval EFI_TIMEOUT - Delay expired before a match occurred.
@retval EFI_OUT_OF_RESOURCES - Fail due to 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
)
;
/**
Allow read from memory mapped I/O space.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Width - The width of memory operation.
@param Address - Base address of the memory operation.
@param Count - Number of memory opeartion to perform.
@param Buffer - The destination buffer to store data.
@retval EFI_SUCCESS - Success.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
@retval EFI_OUT_OF_RESOURCES - Fail due to 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,
IN OUT VOID *Buffer
)
;
/**
Allow write to memory mapped I/O space.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Width - The width of memory operation.
@param Address - Base address of the memory operation.
@param Count - Number of memory opeartion to perform.
@param Buffer - The source buffer to write data from.
@retval EFI_SUCCESS - Success.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
@retval EFI_OUT_OF_RESOURCES - Fail due to 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 OUT VOID *Buffer
)
;
/**
Enable a PCI driver to read PCI controller registers in the
PCI root bridge I/O space.
@param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
@param Width - Signifies the width of the memory operation.
@param UserAddress - The base address of the I/O operation.
@param Count - The number of I/O operations to perform.
@param UserBuffer - The destination buffer to store the results.
@retval EFI_SUCCESS - The data was read from the PCI root bridge.
@retval EFI_INVALID_PARAMETER - Invalid parameters found.
@retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
@retval 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,
IN OUT VOID *UserBuffer
)
;
/**
Enable a PCI driver to write to PCI controller registers in the
PCI root bridge I/O space.
@param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
@param Width - Signifies the width of the memory operation.
@param UserAddress - The base address of the I/O operation.
@param Count - The number of I/O operations to perform.
@param UserBuffer - The source buffer to write data from.
@retval EFI_SUCCESS - The data was written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER - Invalid parameters found.
@retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
@retval 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 OUT VOID *UserBuffer
)
;
/**
Copy one region of PCI root bridge memory space to be copied to
another region of PCI root bridge memory space.
@param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Width - Signifies the width of the memory operation.
@param DestAddress - Destination address of the memory operation.
@param SrcAddress - Source address of the memory operation.
@param Count - Number of memory operations to perform.
@retval EFI_SUCCESS - The data was copied successfully.
@retval EFI_INVALID_PARAMETER - Invalid parameters found.
@retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
@retval 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
)
;
/**
Allows read from PCI configuration space.
@param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
@param Width - Signifies the width of the memory operation.
@param Address - The address within the PCI configuration space
for the PCI controller.
@param Count - The number of PCI configuration operations
to perform.
@param Buffer - The destination buffer to store the results.
@retval EFI_SUCCESS - The data was read from the PCI root bridge.
@retval EFI_INVALID_PARAMETER - Invalid parameters found.
@retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
@retval 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,
IN OUT VOID *Buffer
)
;
/**
Allows write to PCI configuration space.
@param This - A pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
@param Width - Signifies the width of the memory operation.
@param Address - The address within the PCI configuration space
for the PCI controller.
@param Count - The number of PCI configuration operations
to perform.
@param Buffer - The source buffer to get the results.
@retval EFI_SUCCESS - The data was written to the PCI root bridge.
@retval EFI_INVALID_PARAMETER - Invalid parameters found.
@retval EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of
@retval 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 OUT VOID *Buffer
)
;
/**
Provides the PCI controller-specific address needed to access
system memory for DMA.
@param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
@param Operation Indicate if the bus master is going to read or write
to system memory.
@param HostAddress The system memory address to map on the PCI controller.
@param NumberOfBytes On input the number of bytes to map.
On output the number of bytes that were mapped.
@param DeviceAddress The resulting map address for the bus master PCI
controller to use to access the system memory's HostAddress.
@param Mapping The value to pass to Unmap() when the bus master DMA
operation is complete.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Invalid parameters found.
@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 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
)
;
/**
Free memory allocated in AllocateBuffer.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
instance.
@param Pages - Number of pages to free.
@param HostAddress - The base system memory address of the
allocated range.
@retval EFI_SUCCESS - Requested memory pages were freed.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
**/
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.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@retval EFI_SUCCESS - PCI posted write transactions were flushed
@retval from PCI host bridge to system memory.
@retval EFI_DEVICE_ERROR - Fail due to 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 the attributes for a resource range on a PCI root bridge.
@param This - Pointer to EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Attributes - The mask of attributes to set.
@param ResourceBase - Pointer to the base address of the resource range
to be modified by the attributes specified by Attributes.
@param ResourceLength - Pointer to the length of the resource range to be modified.
@retval EFI_SUCCESS - Success.
@retval EFI_INVALID_PARAMETER - Invalid parameter found.
@retval EFI_OUT_OF_RESOURCES - Not enough resources to set the attributes upon.
**/
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 descriptor.
@param This - Pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL instance.
@param Resources - Pointer to the ACPI 2.0 resource descriptor that
describe the current configuration of this PCI root
bridge.
@retval EFI_SUCCESS - Success.
@retval EFI_UNSUPPORTED - Current configuration of the PCI root bridge
@retval could not be retrieved.
**/
EFI_STATUS
EFIAPI
RootBridgeIoConfiguration (
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
OUT VOID **Resources
)
;
extern EFI_METRONOME_ARCH_PROTOCOL *mMetronome;
extern EFI_CPU_IO2_PROTOCOL *mCpuIo;
#endif