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/** @file
The header file for EFI_ISA_IO protocol implementation.
Copyright (c) 2006 - 2009, Intel Corporation.<BR>
All rights reserved. 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 _INTERNAL_ISA_IO_H_
#define _INTERNAL_ISA_IO_H_
#include "InternalIsaBus.h"
//
// ISA I/O Support Function Prototypes
//
/**
Verifies access to an ISA device
@param[in] IsaIoDevice The ISA device to be verified.
@param[in] Type The Access type. The input must be either IsaAccessTypeMem or IsaAccessTypeIo.
@param[in] Width The width of the memory operation.
@param[in] Count The number of memory operations to perform.
@param[in] Offset The offset in ISA memory space to start the memory operation.
@retval EFI_SUCCESS Verify success.
@retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
@retval EFI_UNSUPPORTED The device ont support the access type.
**/
EFI_STATUS
IsaIoVerifyAccess (
IN ISA_IO_DEVICE *IsaIoDevice,
IN ISA_ACCESS_TYPE Type,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINTN Count,
IN UINT32 Offset
);
/**
Performs an ISA I/O Read Cycle
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Width Specifies the width of the I/O operation.
@param[in] Offset The offset in ISA I/O space to start the I/O operation.
@param[in] Count The number of I/O operations to perform.
@param[out] Buffer The destination buffer to store the results
@retval EFI_SUCCESS The data was read from the device sucessfully.
@retval EFI_UNSUPPORTED The Offset is not valid for this device.
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
IsaIoIoRead (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINT32 Offset,
IN UINTN Count,
OUT VOID *Buffer
);
/**
Performs an ISA I/O Write Cycle
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Width Specifies the width of the I/O operation.
@param[in] Offset The offset in ISA I/O space to start the I/O operation.
@param[in] Count The number of I/O operations to perform.
@param[in] Buffer The source buffer to write data from
@retval EFI_SUCCESS The data was writen to the device sucessfully.
@retval EFI_UNSUPPORTED The Offset is not valid for this device.
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
IsaIoIoWrite (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINT32 Offset,
IN UINTN Count,
IN VOID *Buffer
);
/**
Maps a memory region for DMA
@param This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param Operation Indicates the type of DMA (slave or bus master), and if
the DMA operation is going to read or write to system memory.
@param ChannelNumber The slave channel number to use for this DMA operation.
If Operation and ChannelAttributes shows that this device
performs bus mastering DMA, then this field is ignored.
The legal range for this field is 0..7.
@param ChannelAttributes The attributes of the DMA channel to use for this DMA operation
@param HostAddress The system memory address to map to the device.
@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 device to use
to access the hosts HostAddress.
@param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().
@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
@retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.
@retval EFI_UNSUPPORTED The HostAddress can not 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 memory pages could not be allocated.
**/
EFI_STATUS
EFIAPI
IsaIoMap (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,
IN UINT8 ChannelNumber OPTIONAL,
IN UINT32 ChannelAttributes,
IN VOID *HostAddress,
IN OUT UINTN *NumberOfBytes,
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
OUT VOID **Mapping
);
/**
Unmaps a memory region for DMA
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Mapping The mapping value returned from EFI_ISA_IO.Map().
@retval EFI_SUCCESS The range was unmapped.
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
**/
EFI_STATUS
EFIAPI
IsaIoUnmap (
IN EFI_ISA_IO_PROTOCOL *This,
IN VOID *Mapping
);
/**
Flushes any posted write data to the system memory.
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@retval EFI_SUCCESS The buffers were flushed.
@retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.
**/
EFI_STATUS
EFIAPI
IsaIoFlush (
IN EFI_ISA_IO_PROTOCOL *This
);
/**
report a error Status code
@param Code The error status code.
@return EFI_SUCCESS Success to report status code.
**/
EFI_STATUS
ReportErrorStatusCode (
EFI_STATUS_CODE_VALUE Code
);
/**
Writes I/O operation base address and count number to a 8 bit I/O Port.
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] AddrOffset The address' offset.
@param[in] PageOffset The page's offest.
@param[in] CountOffset The count's offset.
@param[in] BaseAddress The base address.
@param[in] Count The number of I/O operations to perform.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Parameter is invalid.
@retval EFI_UNSUPPORTED The address range specified by these Offsets and Count is not valid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
WriteDmaPort (
IN EFI_ISA_IO_PROTOCOL *This,
IN UINT32 AddrOffset,
IN UINT32 PageOffset,
IN UINT32 CountOffset,
IN UINT32 BaseAddress,
IN UINT16 Count
);
/**
Writes an 8-bit I/O Port
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Offset The offset in ISA IO space to start the IO operation.
@param[in] Value The data to write port.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Parameter is invalid.
@retval EFI_UNSUPPORTED The address range specified by Offset is not valid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
WritePort (
IN EFI_ISA_IO_PROTOCOL *This,
IN UINT32 Offset,
IN UINT8 Value
);
/**
Performs an ISA Memory Read Cycle
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Width Specifies the width of the memory operation.
@param[in] Offset The offset in ISA memory space to start the memory operation.
@param[in] Count The number of memory operations to perform.
@param[out] Buffer The destination buffer to store the results
@retval EFI_SUCCESS The data was read from the device successfully.
@retval EFI_UNSUPPORTED The Offset is not valid for this device.
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
IsaIoMemRead (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINT32 Offset,
IN UINTN Count,
OUT VOID *Buffer
);
/**
Performs an ISA Memory Write Cycle
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Width Specifies the width of the memory operation.
@param[in] Offset The offset in ISA memory space to start the memory operation.
@param[in] Count The number of memory operations to perform.
@param[in] Buffer The source buffer to write data from
@retval EFI_SUCCESS The data was written to the device sucessfully.
@retval EFI_UNSUPPORTED The Offset is not valid for this device.
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
IsaIoMemWrite (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINT32 Offset,
IN UINTN Count,
IN VOID *Buffer
);
/**
Copy one region of ISA memory space to another region of ISA memory space on the ISA controller.
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Width Specifies the width of the memory copy operation.
@param[in] DestOffset The offset of the destination
@param[in] SrcOffset The offset of the source
@param[in] Count The number of memory copy operations to perform
@retval EFI_SUCCESS The data was copied sucessfully.
@retval EFI_UNSUPPORTED The DestOffset or SrcOffset is not valid for this device.
@retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
**/
EFI_STATUS
EFIAPI
IsaIoCopyMem (
IN EFI_ISA_IO_PROTOCOL *This,
IN EFI_ISA_IO_PROTOCOL_WIDTH Width,
IN UINT32 DestOffset,
IN UINT32 SrcOffset,
IN UINTN Count
);
/**
Allocates pages that are suitable for an EfiIsaIoOperationBusMasterCommonBuffer mapping.
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Type The type allocation to perform.
@param[in] MemoryType The type of memory to allocate.
@param[in] Pages The number of pages to allocate.
@param[out] HostAddress A pointer to store the base address of the allocated range.
@param[in] Attributes The requested bit mask of attributes for the allocated range.
@retval EFI_SUCCESS The requested memory pages were allocated.
@retval EFI_INVALID_PARAMETER Type is invalid or MemoryType is invalid or HostAddress is NULL
@retval EFI_UNSUPPORTED Attributes is unsupported or the memory range specified
by HostAddress, Pages, and Type is not available for common buffer use.
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
**/
EFI_STATUS
EFIAPI
IsaIoAllocateBuffer (
IN EFI_ISA_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 EFI_ISA_IO.AllocateBuffer().
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
@param[in] Pages The number of pages to free.
@param[in] HostAddress The base address of the allocated range.
@retval EFI_SUCCESS The requested memory pages were freed.
@retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().
**/
EFI_STATUS
EFIAPI
IsaIoFreeBuffer (
IN EFI_ISA_IO_PROTOCOL *This,
IN UINTN Pages,
IN VOID *HostAddress
);
#endif
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