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Diffstat (limited to 'src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/IsaHc.h')
| -rw-r--r-- | src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/IsaHc.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/IsaHc.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/IsaHc.h new file mode 100644 index 0000000000..bc92675d12 --- /dev/null +++ b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Protocol/IsaHc.h @@ -0,0 +1,116 @@ +/** @file + ISA HC Protocol as defined in the PI 1.2.1 specification. + + This protocol provides registration for ISA devices on a positive- or + subtractive-decode ISA bus. It allows devices to be registered and also + handles opening and closing the apertures which are positively-decoded. + + Copyright (c) 2015, 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. + + @par Revision Reference: + This protocol is from PI Version 1.2.1. + +**/ + +#ifndef __ISA_HC_PROTOCOL_H__ +#define __ISA_HC_PROTOCOL_H__ + +#define EFI_ISA_HC_PROTOCOL_GUID \ + { \ + 0xbcdaf080, 0x1bde, 0x4e22, {0xae, 0x6a, 0x43, 0x54, 0x1e, 0x12, 0x8e, 0xc4} \ + } + +#define EFI_ISA_HC_SERVICE_BINDING_PROTOCOL_GUID \ + { \ + 0xfad7933a, 0x6c21, 0x4234, {0xa4, 0x34, 0x0a, 0x8a, 0x0d, 0x2b, 0x07, 0x81} \ + } + +typedef struct _EFI_ISA_HC_PROTOCOL EFI_ISA_HC_PROTOCOL; +typedef struct _EFI_ISA_HC_PROTOCOL *PEFI_ISA_HC_PROTOCOL; + +/** + Open I/O aperture. + + This function opens an I/O aperture in a ISA Host Controller for the I/O addresses + specified by IoAddress to IoAddress + IoLength - 1. It may be possible that a + single hardware aperture may be used for more than one device. This function + tracks the number of times that each aperture is referenced, and does not close + the hardware aperture (via CloseIoAperture()) until there are no more references to it. + + @param This A pointer to this instance of the EFI_ISA_HC_PROTOCOL. + @param IoAddress An unsigned integer that specifies the first byte of the + I/O space required. + @param IoLength An unsigned integer that specifies the number of bytes + of the I/O space required. + @param IoApertureHandle A pointer to the returned I/O aperture handle. This + value can be used on subsequent calls to CloseIoAperture(). + + @retval EFI_SUCCESS The I/O aperture was opened successfully. + @retval EFI_UNSUPPORTED The ISA Host Controller is a subtractive-decode controller. + @retval EFI_OUT_OF_RESOURCES There is no available I/O aperture. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_ISA_HC_OPEN_IO) ( + IN CONST EFI_ISA_HC_PROTOCOL *This, + IN UINT16 IoAddress, + IN UINT16 IoLength, + OUT UINT64 *IoApertureHandle + ); + +/** + Close I/O aperture. + + This function closes a previously opened I/O aperture handle. If there are no + more I/O aperture handles that refer to the hardware I/O aperture resource, + then the hardware I/O aperture is closed. It may be possible that a single + hardware aperture may be used for more than one device. This function tracks + the number of times that each aperture is referenced, and does not close the + hardware aperture (via CloseIoAperture()) until there are no more references to it. + + @param This A pointer to this instance of the EFI_ISA_HC_PROTOCOL. + @param IoApertureHandle The I/O aperture handle previously returned from a + call to OpenIoAperture(). + + @retval EFI_SUCCESS The IO aperture was closed successfully. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_ISA_HC_CLOSE_IO) ( + IN CONST EFI_ISA_HC_PROTOCOL *This, + IN UINT64 IoApertureHandle + ); + +/// +/// ISA HC Protocol +/// +struct _EFI_ISA_HC_PROTOCOL { + /// + /// The version of this protocol. Higher version numbers are backward + /// compatible with lower version numbers. + /// + UINT32 Version; + /// + /// Open an I/O aperture. + /// + EFI_ISA_HC_OPEN_IO OpenIoAperture; + /// + /// Close an I/O aperture. + /// + EFI_ISA_HC_CLOSE_IO CloseIoAperture; +}; + +/// +/// Reference to variable defined in the .DEC file +/// +extern EFI_GUID gEfiIsaHcProtocolGuid; +extern EFI_GUID gEfiIsaHcServiceBindingProtocolGuid; + +#endif // __ISA_HC_H__ |