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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/DeviceIo.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/DeviceIo.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/DeviceIo.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/DeviceIo.h new file mode 100644 index 0000000000..d84a6202ef --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/DeviceIo.h @@ -0,0 +1,268 @@ +/** @file + Device IO protocol as defined in the EFI 1.10 specification. + + Device IO is used to abstract hardware access to devices. It includes + memory mapped IO, IO, PCI Config space, and DMA. + + Copyright (c) 2006 - 2009, 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 __DEVICE_IO_H__ +#define __DEVICE_IO_H__ + +#define EFI_DEVICE_IO_PROTOCOL_GUID \ + { \ + 0xaf6ac311, 0x84c3, 0x11d2, {0x8e, 0x3c, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \ + } + +typedef struct _EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL; + +/// +/// Protocol GUID name defined in EFI1.1. +/// +#define DEVICE_IO_PROTOCOL EFI_DEVICE_IO_PROTOCOL_GUID + +/// +/// Protocol defined in EFI1.1. +/// +typedef EFI_DEVICE_IO_PROTOCOL EFI_DEVICE_IO_INTERFACE; + +/// +/// Device IO Access Width +/// +typedef enum { + IO_UINT8 = 0, + IO_UINT16 = 1, + IO_UINT32 = 2, + IO_UINT64 = 3, + // + // Below enumerations are added in "Extensible Firmware Interface Specification, + // Version 1.10, Specification Update, Version 001". + // + MMIO_COPY_UINT8 = 4, + MMIO_COPY_UINT16 = 5, + MMIO_COPY_UINT32 = 6, + MMIO_COPY_UINT64 = 7 +} EFI_IO_WIDTH; + +/** + Enables a driver to access device registers in the appropriate memory or I/O space. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param Width Signifies the width of the I/O operations. + @param Address The base address of the I/O operations. + @param Count The number of I/O operations to perform. + @param Buffer For read operations, the destination buffer to store the results. For write + operations, the source buffer to write data from. If + Width is MMIO_COPY_UINT8, MMIO_COPY_UINT16, + MMIO_COPY_UINT32, or MMIO_COPY_UINT64, then + Buffer is interpreted as a base address of an I/O operation such as Address. + + @retval EFI_SUCCESS The data was read from or written to the device. + @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. + @retval EFI_INVALID_PARAMETER Width is invalid. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_DEVICE_IO)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN EFI_IO_WIDTH Width, + IN UINT64 Address, + IN UINTN Count, + IN OUT VOID *Buffer + ); + +typedef struct { + EFI_DEVICE_IO Read; + EFI_DEVICE_IO Write; +} EFI_IO_ACCESS; + +/** + Provides an EFI Device Path for a PCI device with the given PCI configuration space address. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param PciAddress The PCI configuration space address of the device whose Device Path + is going to be returned. + @param PciDevicePath A pointer to the pointer for the EFI Device Path for PciAddress. + Memory for the Device Path is allocated from the pool. + + @retval EFI_SUCCESS The PciDevicePath returns a pointer to a valid EFI Device Path. + @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. + @retval EFI_UNSUPPORTED The PciAddress does not map to a valid EFI Device Path. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_PCI_DEVICE_PATH)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN UINT64 PciAddress, + IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath + ); + +typedef enum { + /// + /// A read operation from system memory by a bus master. + /// + EfiBusMasterRead, + + /// + /// A write operation to system memory by a bus master. + /// + EfiBusMasterWrite, + + /// + /// 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. + /// + EfiBusMasterCommonBuffer +} EFI_IO_OPERATION_TYPE; + +/** + Provides the device-specific addresses needed to access system memory. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param Operation Indicates if the bus master is going to read or write to system memory. + @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 Unmap(). + + @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes. + @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. + @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer. + @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined. + @retval EFI_DEVICE_ERROR The system hardware could not map the requested address. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_IO_MAP)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN EFI_IO_OPERATION_TYPE Operation, + IN EFI_PHYSICAL_ADDRESS *HostAddress, + IN OUT UINTN *NumberOfBytes, + OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, + OUT VOID **Mapping + ); + +/** + Completes the Map() operation and releases any corresponding resources. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param Mapping A resulting value to pass to Unmap(). + + @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes. + @retval EFI_DEVICE_ERROR The system hardware could not map the requested address. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_IO_UNMAP)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN VOID *Mapping + ); + +/** + Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param Type The type allocation to perform. + @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 address of the allocated range. + + @retval EFI_SUCCESS The requested memory pages were allocated. + @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated. + @retval EFI_INVALID_PARAMETER The requested memory type is invalid. + @retval EFI_UNSUPPORTED The requested HostAddress is not supported on + this platform. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_IO_ALLOCATE_BUFFER)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN EFI_ALLOCATE_TYPE Type, + IN EFI_MEMORY_TYPE MemoryType, + IN UINTN Pages, + IN OUT EFI_PHYSICAL_ADDRESS *HostAddress + ); + +/** + Flushes any posted write data to the device. + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + + @retval EFI_SUCCESS The buffers were flushed. + @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_IO_FLUSH)( + IN EFI_DEVICE_IO_PROTOCOL *This + ); + +/** + Frees pages that were allocated with AllocateBuffer(). + + @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance. + @param Pages The number of pages to free. + @param HostAddress The base address of the range to free. + + @retval EFI_SUCCESS The requested memory pages were allocated. + @retval EFI_NOT_FOUND The requested memory pages were not allocated with + AllocateBuffer(). + @retval EFI_INVALID_PARAMETER HostAddress is not page aligned or Pages is invalid. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_IO_FREE_BUFFER)( + IN EFI_DEVICE_IO_PROTOCOL *This, + IN UINTN Pages, + IN EFI_PHYSICAL_ADDRESS HostAddress + ); + +/// +/// This protocol provides the basic Memory, I/O, and PCI interfaces that +/// are used to abstract accesses to devices. +/// +struct _EFI_DEVICE_IO_PROTOCOL { + /// + /// Allows reads and writes to memory mapped I/O space. + /// + EFI_IO_ACCESS Mem; + /// + /// Allows reads and writes to I/O space. + /// + EFI_IO_ACCESS Io; + /// + /// Allows reads and writes to PCI configuration space. + /// + EFI_IO_ACCESS Pci; + EFI_IO_MAP Map; + EFI_PCI_DEVICE_PATH PciDevicePath; + EFI_IO_UNMAP Unmap; + EFI_IO_ALLOCATE_BUFFER AllocateBuffer; + EFI_IO_FLUSH Flush; + EFI_IO_FREE_BUFFER FreeBuffer; +}; + +extern EFI_GUID gEfiDeviceIoProtocolGuid; + +#endif |