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Diffstat (limited to 'Core/MdePkg/Include/Protocol/SmmSxDispatch2.h')
| -rw-r--r-- | Core/MdePkg/Include/Protocol/SmmSxDispatch2.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/Core/MdePkg/Include/Protocol/SmmSxDispatch2.h b/Core/MdePkg/Include/Protocol/SmmSxDispatch2.h new file mode 100644 index 0000000000..37effda44d --- /dev/null +++ b/Core/MdePkg/Include/Protocol/SmmSxDispatch2.h @@ -0,0 +1,135 @@ +/** @file
+ SMM Sx Dispatch Protocol as defined in PI 1.2 Specification
+ Volume 4 System Management Mode Core Interface.
+
+ Provides the parent dispatch service for a given Sx-state source generator.
+
+ Copyright (c) 2009 - 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
+ 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 _SMM_SX_DISPATCH2_H_
+#define _SMM_SX_DISPATCH2_H_
+
+#include <Pi/PiSmmCis.h>
+
+#define EFI_SMM_SX_DISPATCH2_PROTOCOL_GUID \
+ { \
+ 0x456d2859, 0xa84b, 0x4e47, {0xa2, 0xee, 0x32, 0x76, 0xd8, 0x86, 0x99, 0x7d } \
+ }
+
+///
+/// Sleep states S0-S5
+///
+typedef enum {
+ SxS0,
+ SxS1,
+ SxS2,
+ SxS3,
+ SxS4,
+ SxS5,
+ EfiMaximumSleepType
+} EFI_SLEEP_TYPE;
+
+///
+/// Sleep state phase: entry or exit
+///
+typedef enum {
+ SxEntry,
+ SxExit,
+ EfiMaximumPhase
+} EFI_SLEEP_PHASE;
+
+///
+/// The dispatch function's context
+///
+typedef struct {
+ EFI_SLEEP_TYPE Type;
+ EFI_SLEEP_PHASE Phase;
+} EFI_SMM_SX_REGISTER_CONTEXT;
+
+typedef struct _EFI_SMM_SX_DISPATCH2_PROTOCOL EFI_SMM_SX_DISPATCH2_PROTOCOL;
+
+/**
+ Provides the parent dispatch service for a given Sx source generator.
+
+ This service registers a function (DispatchFunction) which will be called when the sleep state
+ event specified by RegisterContext is detected. On return, DispatchHandle contains a
+ unique handle which may be used later to unregister the function using UnRegister().
+ The DispatchFunction will be called with Context set to the same value as was passed into
+ this function in RegisterContext and with CommBuffer and CommBufferSize set to
+ NULL and 0 respectively.
+
+ @param[in] This Pointer to the EFI_SMM_SX_DISPATCH2_PROTOCOL instance.
+ @param[in] DispatchFunction Function to register for handler when the specified sleep state event occurs.
+ @param[in] RegisterContext Pointer to the dispatch function's context.
+ The caller fills this context in before calling
+ the register function to indicate to the register
+ function which Sx state type and phase the caller
+ wishes to be called back on. For this intertace,
+ the Sx driver will call the registered handlers for
+ all Sx type and phases, so the Sx state handler(s)
+ must check the Type and Phase field of the Dispatch
+ context and act accordingly.
+ @param[out] DispatchHandle Handle of dispatch function, for when interfacing
+ with the parent Sx state SMM driver.
+
+ @retval EFI_SUCCESS The dispatch function has been successfully
+ registered and the SMI source has been enabled.
+ @retval EFI_UNSUPPORTED The Sx driver or hardware does not support that
+ Sx Type/Phase.
+ @retval EFI_DEVICE_ERROR The Sx driver was unable to enable the SMI source.
+ @retval EFI_INVALID_PARAMETER RegisterContext is invalid. Type & Phase are not
+ within valid range.
+ @retval EFI_OUT_OF_RESOURCES There is not enough memory (system or SMM) to manage this
+ child.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_SX_REGISTER2)(
+ IN CONST EFI_SMM_SX_DISPATCH2_PROTOCOL *This,
+ IN EFI_SMM_HANDLER_ENTRY_POINT2 DispatchFunction,
+ IN CONST EFI_SMM_SX_REGISTER_CONTEXT *RegisterContext,
+ OUT EFI_HANDLE *DispatchHandle
+ );
+
+/**
+ Unregisters an Sx-state service.
+
+ This service removes the handler associated with DispatchHandle so that it will no longer be
+ called in response to sleep event.
+
+ @param[in] This Pointer to the EFI_SMM_SX_DISPATCH2_PROTOCOL instance.
+ @param[in] DispatchHandle Handle of the service to remove.
+
+ @retval EFI_SUCCESS The service has been successfully removed.
+ @retval EFI_INVALID_PARAMETER The DispatchHandle was not valid.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_SMM_SX_UNREGISTER2)(
+ IN CONST EFI_SMM_SX_DISPATCH2_PROTOCOL *This,
+ IN EFI_HANDLE DispatchHandle
+ );
+
+///
+/// Interface structure for the SMM Sx Dispatch Protocol
+///
+/// The EFI_SMM_SX_DISPATCH2_PROTOCOL provides the ability to install child handlers to
+/// respond to sleep state related events.
+///
+struct _EFI_SMM_SX_DISPATCH2_PROTOCOL {
+ EFI_SMM_SX_REGISTER2 Register;
+ EFI_SMM_SX_UNREGISTER2 UnRegister;
+};
+
+extern EFI_GUID gEfiSmmSxDispatch2ProtocolGuid;
+
+#endif
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