/*++

Copyright (c) 2004 - 2006, Intel Corporation                                                         
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.             

Module Name:

    IsaIo.h
    
Abstract:

    EFI_ISA_IO_PROTOCOL or EFI_LIGHT_ISA_IO_PROTOCOL 
    based on macro SIZE_REDUCTION_ISA_COMBINED.

Revision History

--*/

#ifndef _EFI_ISA_IO_H
#define _EFI_ISA_IO_H

//
// Common definitions for Light ISA I/O Protocol and ISA I/O Protocol
//

#include EFI_PROTOCOL_DEFINITION(IsaAcpi)

typedef enum {
  EfiIsaIoWidthUint8,
  EfiIsaIoWidthUint16,
  EfiIsaIoWidthUint32,
  EfiIsaIoWidthReserved,
  EfiIsaIoWidthFifoUint8,
  EfiIsaIoWidthFifoUint16,
  EfiIsaIoWidthFifoUint32,
  EfiIsaIoWidthFifoReserved,
  EfiIsaIoWidthFillUint8,
  EfiIsaIoWidthFillUint16,
  EfiIsaIoWidthFillUint32,
  EfiIsaIoWidthFillReserved,
  EfiIsaIoWidthMaximum
} EFI_ISA_IO_PROTOCOL_WIDTH;

//
// Attributes for common buffer allocations
//
#define EFI_ISA_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE  0x080    // Map a memory range so write are combined
#define EFI_ISA_IO_ATTRIBUTE_MEMORY_CACHED         0x800    // Map a memory range so all r/w accesses are cached
#define EFI_ISA_IO_ATTRIBUTE_MEMORY_DISABLE        0x1000   // Disable a memory range 

//
// Channel attribute for DMA operations
//
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE  0x001
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A           0x002
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B           0x004
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C           0x008
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8           0x010
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16          0x020
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE       0x040
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE       0x080
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE   0x100

typedef enum {
  EfiIsaIoOperationBusMasterRead,
  EfiIsaIoOperationBusMasterWrite,
  EfiIsaIoOperationBusMasterCommonBuffer,
  EfiIsaIoOperationSlaveRead,
  EfiIsaIoOperationSlaveWrite,
  EfiIsaIoOperationMaximum
} EFI_ISA_IO_PROTOCOL_OPERATION;

#ifndef SIZE_REDUCTION_ISA_COMBINED

//
// Specific for ISA I/O Protocol
//

#define EFI_INTERFACE_DEFINITION_FOR_ISA_IO EFI_ISA_IO_PROTOCOL
#define EFI_ISA_IO_PROTOCOL_VERSION         &gEfiIsaIoProtocolGuid
#define EFI_ISA_IO_OPERATION_TOKEN          EfiIsaIoOperationBusMasterWrite


//
// Global ID for the ISA I/O Protocol
//

#define EFI_ISA_IO_PROTOCOL_GUID \
  { 0x7ee2bd44, 0x3da0, 0x11d4, 0x9a, 0x38, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d }

EFI_FORWARD_DECLARATION (EFI_ISA_IO_PROTOCOL);

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_IO_MEM) (
  IN EFI_ISA_IO_PROTOCOL  *This,
  IN     EFI_ISA_IO_PROTOCOL_WIDTH    Width,
  IN     UINT32                       Offset,
  IN     UINTN                        Count,
  IN OUT VOID                         *Buffer
  );

typedef struct {
  EFI_ISA_IO_PROTOCOL_IO_MEM  Read;
  EFI_ISA_IO_PROTOCOL_IO_MEM  Write;
} EFI_ISA_IO_PROTOCOL_ACCESS;

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_COPY_MEM) (
  IN EFI_ISA_IO_PROTOCOL  *This,
  IN     EFI_ISA_IO_PROTOCOL_WIDTH    Width,
  IN     UINT32                       DestOffset,
  IN     UINT32                       SrcOffset,
  IN     UINTN                        Count
  );

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_MAP) (
  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
  );

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_UNMAP) (
  IN EFI_ISA_IO_PROTOCOL  *This,
  IN  VOID                         *Mapping
  );

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_ALLOCATE_BUFFER) (
  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
  );

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_FREE_BUFFER) (
  IN EFI_ISA_IO_PROTOCOL  *This,
  IN  UINTN                        Pages,
  IN  VOID                         *HostAddress
  );

typedef
EFI_STATUS
(EFIAPI *EFI_ISA_IO_PROTOCOL_FLUSH) (
  IN EFI_ISA_IO_PROTOCOL  *This
  );

//
// Interface structure for the ISA I/O Protocol
//
typedef struct _EFI_ISA_IO_PROTOCOL {
  EFI_ISA_IO_PROTOCOL_ACCESS           Mem;
  EFI_ISA_IO_PROTOCOL_ACCESS           Io;
  EFI_ISA_IO_PROTOCOL_COPY_MEM         CopyMem;
  EFI_ISA_IO_PROTOCOL_MAP              Map;
  EFI_ISA_IO_PROTOCOL_UNMAP            Unmap;
  EFI_ISA_IO_PROTOCOL_ALLOCATE_BUFFER  AllocateBuffer;
  EFI_ISA_IO_PROTOCOL_FREE_BUFFER      FreeBuffer;
  EFI_ISA_IO_PROTOCOL_FLUSH            Flush;
  EFI_ISA_ACPI_RESOURCE_LIST           *ResourceList;
  UINT32                               RomSize;
  VOID                                 *RomImage;
} EFI_ISA_IO_PROTOCOL;

extern EFI_GUID gEfiIsaIoProtocolGuid;

#else

//
// Specific for Light ISA I/O Protocol
//

#define EFI_INTERFACE_DEFINITION_FOR_ISA_IO EFI_LIGHT_ISA_IO_PROTOCOL
#define EFI_ISA_IO_PROTOCOL_VERSION         &gEfiLightIsaIoProtocolGuid
#define EFI_ISA_IO_OPERATION_TOKEN          EfiIsaIoOperationSlaveWrite  

#define ADD_SERIAL_NAME(x, y)

//
// Global ID for the Light ISA I/O Protocol
//

#define EFI_LIGHT_ISA_IO_PROTOCOL_GUID \
  { 0x7cc7ed80, 0x9a68, 0x4781, 0x80, 0xe4, 0xda, 0x16, 0x99, 0x10, 0x5a, 0xfe }

EFI_FORWARD_DECLARATION (EFI_LIGHT_ISA_IO_PROTOCOL);


typedef
EFI_STATUS
(EFIAPI *EFI_LIGHT_ISA_IO_PROTOCOL_IO_MEM) (
  IN     EFI_LIGHT_ISA_IO_PROTOCOL    *This,
  IN     EFI_ISA_IO_PROTOCOL_WIDTH    Width,
  IN     UINT32                       Offset,
  IN     UINTN                        Count,
  IN OUT VOID                         *Buffer
  )
/*++

Routine Description:

  Performs an ISA I/O Read/Write Cycle
  EFI_LIGHT_ISA_IO_PROTOCOL doesn't verfiy access for I/O operation.

Arguments:

  This                  - A pointer to the EFI_ISA_IO_PROTOCOL or EFI_LIGHT_ISA_IO_PROTOCOL instance.
  Width                 - Signifies the width of the I/O operation.
  Offset                - The offset in ISA I/O space to start the I/O operation.  
  Count                 - The number of I/O operations to perform. 
  Buffer                - The source/destination buffer

Returns:

  EFI_SUCCESS           - The data was read from or written to the device sucessfully.
  EFI_UNSUPPORTED       - The Offset is not valid for this device.
  EFI_INVALID_PARAMETER - Width or Count, or both, were invalid.
  EFI_OUT_OF_RESOURCES  - The request could not be completed due to a lack of resources.

--*/  
;

typedef struct {
  EFI_LIGHT_ISA_IO_PROTOCOL_IO_MEM  Read;
  EFI_LIGHT_ISA_IO_PROTOCOL_IO_MEM  Write;
} EFI_LIGHT_ISA_IO_PROTOCOL_ACCESS;


typedef
EFI_STATUS
(EFIAPI *EFI_LIGHT_ISA_IO_PROTOCOL_MAP) (
  IN     EFI_LIGHT_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
  )
/*++

Routine Description:

  Maps a memory region for DMA, EFI_LIGHT_ISA_IO_PROTOCOL only supports 
  Slave read/write operation to save code size.

Arguments:

  This                  - A pointer to the EFI_LIGHT_ISA_IO_PROTOCOL instance.
  Operation             - Indicates the type of DMA (slave or bus master), and if 
                          the DMA operation is going to read or write to system memory. 
  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.  
  ChannelAttributes     - The attributes of the DMA channel to use for this DMA operation
  HostAddress           - The system memory address to map to the device.  
  NumberOfBytes         - On input the number of bytes to map.  On output the number 
                          of bytes that were mapped.
  DeviceAddress         - The resulting map address for the bus master device to use 
                          to access the hosts HostAddress.  
  Mapping               - A resulting value to pass to EFI_ISA_IO.Unmap().

Returns:

  EFI_SUCCESS           - The range was mapped for the returned NumberOfBytes.
  EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.
  EFI_UNSUPPORTED       - The HostAddress can not be mapped as a common buffer.
  EFI_DEVICE_ERROR      - The system hardware could not map the requested address.
  EFI_OUT_OF_RESOURCES  - The memory pages could not be allocated.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_LIGHT_ISA_IO_PROTOCOL_UNMAP) (
  IN EFI_LIGHT_ISA_IO_PROTOCOL     *This,
  IN  VOID                         *Mapping
  )
/*++

Routine Description:

  Unmaps a memory region for DMA

Arguments:

  This             - A pointer to the EFI_ISA_IO_PROTOCOL or EFI_LIGHT_ISA_IO_PROTOCOL instance.
  Mapping          - The mapping value returned from EFI_ISA_IO.Map().

Returns:

  EFI_SUCCESS      - The range was unmapped.
  EFI_DEVICE_ERROR - The data was not committed to the target system memory.

--*/  
;	

typedef
EFI_STATUS
(EFIAPI *EFI_LIGHT_ISA_IO_PROTOCOL_FLUSH) (
  IN EFI_LIGHT_ISA_IO_PROTOCOL     *This
  )
/*++

Routine Description:

  Flushes a DMA buffer

Arguments:

  This             - A pointer to the EFI_ISA_IO_PROTOCOL or EFI_LIGHT_ISA_IO_PROTOCOL instance.

Returns:

  EFI_SUCCESS      - The buffers were flushed.
  EFI_DEVICE_ERROR - The buffers were not flushed due to a hardware error.

--*/  
;

//
// Interface structure for the Light ISA I/O Protocol
//
typedef struct _EFI_LIGHT_ISA_IO_PROTOCOL {
  EFI_LIGHT_ISA_IO_PROTOCOL_ACCESS     Io;
  EFI_LIGHT_ISA_IO_PROTOCOL_MAP        Map;
  EFI_LIGHT_ISA_IO_PROTOCOL_UNMAP      Unmap;
  EFI_LIGHT_ISA_IO_PROTOCOL_FLUSH      Flush;
  EFI_ISA_ACPI_RESOURCE_LIST           *ResourceList;
  UINT32                               RomSize;
  VOID                                 *RomImage;
} EFI_LIGHT_ISA_IO_PROTOCOL;

extern EFI_GUID gEfiLightIsaIoProtocolGuid;

#endif

#endif