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Diffstat (limited to 'src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/Ppi/DelayedDispatch.h')
-rw-r--r-- | src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/Ppi/DelayedDispatch.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/Ppi/DelayedDispatch.h b/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/Ppi/DelayedDispatch.h new file mode 100644 index 0000000000..a51da027b8 --- /dev/null +++ b/src/vendorcode/intel/edk2/edk2-stable202005/MdePkg/Include/Ppi/DelayedDispatch.h @@ -0,0 +1,85 @@ +/** @file + EFI Delayed Dispatch PPI as defined in the PI 1.7 Specification + + Provide timed event service in PEI + + Copyright (c) 2020, American Megatrends International LLC. All rights reserved. + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#ifndef __DELAYED_DISPATCH_PPI_H__ +#define __DELAYED_DISPATCH_PPI_H__ + +/// +/// Global ID for EFI_DELAYED_DISPATCH_PPI_GUID +/// +#define EFI_DELAYED_DISPATCH_PPI_GUID \ + { \ + 0x869c711d, 0x649c, 0x44fe, { 0x8b, 0x9e, 0x2c, 0xbb, 0x29, 0x11, 0xc3, 0xe6} } \ + } + + +/** + Delayed Dispatch function. This routine is called sometime after the required + delay. Upon return, if NewDelay is 0, the function is unregistered. If NewDelay + is not zero, this routine will be called again after the new delay period. + + @param[in,out] Context Pointer to Context. Can be updated by routine. + @param[out] NewDelay The new delay in us. Leave at 0 to unregister callback. + +**/ + +typedef +VOID +(EFIAPI *EFI_DELAYED_DISPATCH_FUNCTION) ( + IN OUT UINT64 *Context, + OUT UINT32 *NewDelay + ); + + +/// +/// The forward declaration for EFI_DELAYED_DISPATCH_PPI +/// + +typedef struct _EFI_DELAYED_DISPATCH_PPI EFI_DELAYED_DISPATCH_PPI; + + +/** +Register a callback to be called after a minimum delay has occurred. + +This service is the single member function of the EFI_DELAYED_DISPATCH_PPI + + @param This Pointer to the EFI_DELAYED_DISPATCH_PPI instance + @param Function Function to call back + @param Context Context data + @param Delay Delay interval + + @retval EFI_SUCCESS Function successfully loaded + @retval EFI_INVALID_PARAMETER One of the Arguments is not supported + @retval EFI_OUT_OF_RESOURCES No more entries + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_DELAYED_DISPATCH_REGISTER)( + IN EFI_DELAYED_DISPATCH_PPI *This, + IN EFI_DELAYED_DISPATCH_FUNCTION Function, + IN UINT64 Context, + OUT UINT32 Delay + ); + + +/// +/// This PPI is a pointer to the Delayed Dispatch Service. +/// This service will be published by the Pei Foundation. The PEI Foundation +/// will use this service to relaunch a known function that requests a delayed +/// execution. +/// +struct _EFI_DELAYED_DISPATCH_PPI { + EFI_DELAYED_DISPATCH_REGISTER Register; +}; + + +extern EFI_GUID gEfiPeiDelayedDispatchPpiGuid; + +#endif |