mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-29 12:35:53 +01:00
363 lines
16 KiB
C
363 lines
16 KiB
C
/** @file
|
|
ISA I/O Protocol is used by ISA device drivers to perform I/O, MMIO and DMA
|
|
operations on the ISA controllers they manage.
|
|
|
|
Copyright (c) 2006 - 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 that 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 _EFI_ISA_IO_H_
|
|
#define _EFI_ISA_IO_H_
|
|
|
|
#include <Protocol/IsaAcpi.h>
|
|
|
|
///
|
|
/// Global ID for the EFI_ISA_IO_PROTOCOL
|
|
///
|
|
#define EFI_ISA_IO_PROTOCOL_GUID \
|
|
{ \
|
|
0x7ee2bd44, 0x3da0, 0x11d4, { 0x9a, 0x38, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d } \
|
|
}
|
|
|
|
///
|
|
/// Forward declaration for the EFI_ISA_IO_PROTOCOL.
|
|
///
|
|
typedef struct _EFI_ISA_IO_PROTOCOL EFI_ISA_IO_PROTOCOL;
|
|
|
|
///
|
|
/// Width of EFI_ISA_IO_PROTOCOL I/O Port and MMIO operations.
|
|
///
|
|
typedef enum {
|
|
EfiIsaIoWidthUint8 = 0, ///< 8-bit operation.
|
|
EfiIsaIoWidthUint16, ///< 16-bit operation.
|
|
EfiIsaIoWidthUint32, ///< 32-bit operation
|
|
EfiIsaIoWidthReserved,
|
|
EfiIsaIoWidthFifoUint8, ///< 8-bit FIFO operation.
|
|
EfiIsaIoWidthFifoUint16, ///< 16-bit FIFO operation.
|
|
EfiIsaIoWidthFifoUint32, ///< 32-bit FIFO operation.
|
|
EfiIsaIoWidthFifoReserved,
|
|
EfiIsaIoWidthFillUint8, ///< 8-bit Fill operation.
|
|
EfiIsaIoWidthFillUint16, ///< 16-bit Fill operation.
|
|
EfiIsaIoWidthFillUint32, ///< 32-bit Fill operation.
|
|
EfiIsaIoWidthFillReserved,
|
|
EfiIsaIoWidthMaximum
|
|
} EFI_ISA_IO_PROTOCOL_WIDTH;
|
|
|
|
///
|
|
/// Attributes for the EFI_ISA_IO_PROTOCOL common DMA 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 read and write accesses are cached.
|
|
#define EFI_ISA_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 ///< Disable a memory range.
|
|
|
|
///
|
|
/// Channel attribute for EFI_ISA_IO_PROTOCOL slave DMA requests
|
|
///
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE 0x001 ///< Set the speed of the DMA transfer in compatible mode.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A 0x002 ///< Not supported.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B 0x004 ///< Not supported.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C 0x008 ///< Not supported.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8 0x010 ///< Request 8-bit DMA transfers. Only available on channels 0..3.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16 0x020 ///< Request 16-bit DMA transfers. Only available on channels 4..7.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE 0x040 ///< Request a single DMA transfer.
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE 0x080 ///< Request multiple DMA transfers until TC (Terminal Count) or EOP (End of Process).
|
|
#define EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE 0x100 ///< Automatically reload base and count at the end of the DMA transfer.
|
|
|
|
///
|
|
/// The DMA opreration type for EFI_ISA_IO_PROTOCOL DMA requests.
|
|
///
|
|
typedef enum {
|
|
///
|
|
/// A read operation from system memory by a bus master.
|
|
///
|
|
EfiIsaIoOperationBusMasterRead,
|
|
///
|
|
/// A write operation to system memory by a bus master.
|
|
///
|
|
EfiIsaIoOperationBusMasterWrite,
|
|
///
|
|
/// Provides both read and write access to system memory by both the processor
|
|
/// and a bus master. The buffer is coherent from both the processor's and the
|
|
/// bus master's point of view.
|
|
///
|
|
EfiIsaIoOperationBusMasterCommonBuffer,
|
|
///
|
|
/// A read operation from system memory by a slave device.
|
|
///
|
|
EfiIsaIoOperationSlaveRead,
|
|
///
|
|
/// A write operation to system memory by a slave master.
|
|
///
|
|
EfiIsaIoOperationSlaveWrite,
|
|
EfiIsaIoOperationMaximum
|
|
} EFI_ISA_IO_PROTOCOL_OPERATION;
|
|
|
|
/**
|
|
Performs ISA I/O and MMIO Read/Write Cycles
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
@param[in] Width Specifies the width of the I/O or MMIO operation.
|
|
@param[in] Offset The offset into the ISA I/O or MMIO space to start the
|
|
operation.
|
|
@param[in] Count The number of I/O or MMIO operations to perform.
|
|
@param[in, 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 successfully read from or written to the device.
|
|
@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.
|
|
|
|
**/
|
|
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
|
|
);
|
|
|
|
///
|
|
/// Structure of functions for accessing ISA I/O and MMIO space.
|
|
///
|
|
typedef struct {
|
|
///
|
|
/// Read from ISA I/O or MMIO space.
|
|
///
|
|
EFI_ISA_IO_PROTOCOL_IO_MEM Read;
|
|
///
|
|
/// Write to ISA I/O or MMIO space.
|
|
///
|
|
EFI_ISA_IO_PROTOCOL_IO_MEM Write;
|
|
} EFI_ISA_IO_PROTOCOL_ACCESS;
|
|
|
|
/**
|
|
Copies data from one region of ISA MMIO space to another region of ISA
|
|
MMIO space.
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
@param[in] Width Specifies the width of the MMIO copy operation.
|
|
@param[in] DestOffset The offset of the destination in ISA MMIO space.
|
|
@param[in] SrcOffset The offset of the source in ISA MMIO space.
|
|
@param[in] Count The number tranfers to perform for this copy operation.
|
|
|
|
@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.
|
|
|
|
**/
|
|
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
|
|
);
|
|
|
|
/**
|
|
Maps a memory region for DMA.
|
|
|
|
This function returns the device-specific addresses required to access system memory.
|
|
This function is used to map system memory for ISA DMA operations. All ISA DMA
|
|
operations must be performed through their mapped addresses, and such mappings must
|
|
be freed with EFI_ISA_IO_PROTOCOL.Unmap() after the DMA operation is completed.
|
|
|
|
If the DMA operation is a single read or write data transfer through an ISA bus
|
|
master, then EfiIsaIoOperationBusMasterRead or EfiIsaIoOperationBusMasterWrite
|
|
is used and the range is unmapped to complete the operation. If the DMA operation
|
|
is a single read or write data transfer through an ISA slave controller, then
|
|
EfiIsaIoOperationSlaveRead or EfiIsaIoOperationSlaveWrite is used and the range
|
|
is unmapped to complete the operation.
|
|
|
|
If performing a DMA read operation, all the data must be present in system memory before the Map() is performed. Similarly,
|
|
if performing a DMA write operation, the data must not be accessed in system
|
|
memory until EFI_ISA_IO_PROTOCOL.Unmap() is performed. Bus master operations that
|
|
require both read and write access or require multiple host device interactions
|
|
within the same mapped region must use EfiIsaIoOperationBusMasterCommonBuffer.
|
|
However, only memory allocated via the EFI_ISA_IO_PROTOCOL.AllocateBuffer() interface
|
|
is guaranteed to be able to be mapped for this operation type. In all mapping
|
|
requests the NumberOfBytes returned may be less than originally requested. It is
|
|
the caller's responsibility to make additional requests to complete the entire
|
|
transfer.
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
@param[in] 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[in] 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[in] ChannelAttributes A bitmask of the attributes used to configure
|
|
the slave DMA channel for this DMA operation.
|
|
See EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_* for the
|
|
legal bit combinations.
|
|
@param[in] HostAddress The system memory address to map to the device.
|
|
@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
|
|
device to use to access the hosts HostAddress.
|
|
@param[out] Mapping A returned value that must be passed to into
|
|
EFI_ISA_IO_PROTOCOL.Unmap() to free all the the
|
|
resources associated with this map request.
|
|
|
|
@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
|
|
@retval EFI_INVALID_PARAMETER The Operation is undefined.
|
|
@retval EFI_INVALID_PARAMETER The 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.
|
|
|
|
**/
|
|
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
|
|
);
|
|
|
|
/**
|
|
Unmaps a memory region that was previously mapped with EFI_ISA_IO_PROTOCOL.Map().
|
|
|
|
The EFI_ISA_IO_PROTOCOL.Map() operation is completed and any corresponding
|
|
resources are released. If the operation was EfiIsaIoOperationSlaveWrite
|
|
or EfiIsaIoOperationBusMasterWrite, the data is committed to system memory.
|
|
Any resources used for the mapping are freed.
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
@param[in] Mapping The mapping value returned from EFI_ISA_IO_PROTOCOL.Map().
|
|
|
|
@retval EFI_SUCCESS The memory region was unmapped.
|
|
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_ISA_IO_PROTOCOL_UNMAP)(
|
|
IN EFI_ISA_IO_PROTOCOL *This,
|
|
IN VOID *Mapping
|
|
);
|
|
|
|
/**
|
|
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.
|
|
@retval EFI_INVALID_PARAMETER MemoryType is invalid.
|
|
@retval EFI_INVALID_PARAMETER HostAddress is NULL.
|
|
@retval EFI_UNSUPPORTED Attributes is unsupported.
|
|
@retval EFI_UNSUPPORTED 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.
|
|
|
|
**/
|
|
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
|
|
);
|
|
|
|
/**
|
|
Frees a common buffer that was allocated with EFI_ISA_IO_PROTOCOL.AllocateBuffer().
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
@param[in] Pages The number of pages to free from the previously allocated common buffer.
|
|
@param[in] HostAddress The base address of the previously allocated common buffer.
|
|
|
|
|
|
@retval EFI_SUCCESS The requested memory pages were freed.
|
|
@retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_ISA_IO_PROTOCOL_FREE_BUFFER)(
|
|
IN EFI_ISA_IO_PROTOCOL *This,
|
|
IN UINTN Pages,
|
|
IN VOID *HostAddress
|
|
);
|
|
|
|
/**
|
|
Flushes a DMA buffer, which forces all DMA posted write transactions to complete.
|
|
|
|
@param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.
|
|
|
|
@retval EFI_SUCCESS The DMA buffers were flushed.
|
|
@retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_ISA_IO_PROTOCOL_FLUSH)(
|
|
IN EFI_ISA_IO_PROTOCOL *This
|
|
);
|
|
|
|
///
|
|
/// The EFI_ISA_IO_PROTOCOL provides the basic Memory, I/O, and DMA interfaces
|
|
/// used to abstract accesses to ISA controllers. There is one EFI_ISA_IO_PROTOCOL
|
|
/// instance for each ISA controller on a ISA bus. A device driver that wishes
|
|
/// to manage an ISA controller in a system will have to retrieve the
|
|
/// ISA_PCI_IO_PROTOCOL instance associated with the ISA controller.
|
|
///
|
|
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;
|
|
///
|
|
/// The list of I/O , MMIO, DMA, and Interrupt resources associated with the
|
|
/// ISA controller abstracted by this instance of the EFI_ISA_IO_PROTOCOL.
|
|
///
|
|
EFI_ISA_ACPI_RESOURCE_LIST *ResourceList;
|
|
///
|
|
/// The size, in bytes, of the ROM image.
|
|
///
|
|
UINT32 RomSize;
|
|
///
|
|
/// A pointer to the in memory copy of the ROM image. The ISA Bus Driver is responsible
|
|
/// for allocating memory for the ROM image, and copying the contents of the ROM to memory
|
|
/// during ISA Bus initialization.
|
|
///
|
|
VOID *RomImage;
|
|
};
|
|
|
|
extern EFI_GUID gEfiIsaIoProtocolGuid;
|
|
|
|
#endif
|