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79964ac8 1/** @file\r
8411f1c0 2 Provides the parent dispatch service for a given SMI source generator.\r
79964ac8 3\r
1c2f052d
LG
4Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
5This program and the accompanying materials are licensed and made available under\r
6the terms and conditions of the BSD License that accompanies this distribution.\r
f22f941e 7The full text of the license may be found at\r
1c2f052d
LG
8http://opensource.org/licenses/bsd-license.php.\r
9\r
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
f22f941e 11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
79964ac8 12\r
79964ac8 13 @par Revision Reference:\r
05ef5a88 14 This Protocol is defined in Framework for EFI SMM Core Interface Spec\r
79964ac8 15 Version 0.9.\r
16\r
17**/\r
18\r
19#ifndef _EFI_SMM_SW_DISPATCH_H_\r
20#define _EFI_SMM_SW_DISPATCH_H_\r
21\r
b80fbe85 22\r
79964ac8 23//\r
24// Global ID for the SW SMI Protocol\r
25//\r
26#define EFI_SMM_SW_DISPATCH_PROTOCOL_GUID \\r
27 { \\r
28 0xe541b773, 0xdd11, 0x420c, {0xb0, 0x26, 0xdf, 0x99, 0x36, 0x53, 0xf8, 0xbf } \\r
29 }\r
30\r
31typedef struct _EFI_SMM_SW_DISPATCH_PROTOCOL EFI_SMM_SW_DISPATCH_PROTOCOL;\r
32\r
33//\r
34// Related Definitions\r
35//\r
36//\r
37// A particular chipset may not support all possible software SMI input values.\r
38// For example, the ICH supports only values 00h to 0FFh. The parent only allows a single\r
39// child registration for each SwSmiInputValue.\r
40//\r
41typedef struct {\r
42 UINTN SwSmiInputValue;\r
43} EFI_SMM_SW_DISPATCH_CONTEXT;\r
44\r
45//\r
46// Member functions\r
47//\r
48/**\r
49 Dispatch function for a Software SMI handler.\r
50\r
f22f941e 51 @param DispatchHandle The handle of this dispatch function.\r
52 @param DispatchContext The pointer to the dispatch function's context.\r
79964ac8 53 The SwSmiInputValue field is filled in\r
54 by the software dispatch driver prior to\r
55 invoking this dispatch function.\r
56 The dispatch function will only be called\r
57 for input values for which it is registered.\r
58\r
700a7869 59 @return None\r
79964ac8 60\r
61**/\r
62typedef\r
63VOID\r
69686d56 64(EFIAPI *EFI_SMM_SW_DISPATCH)(\r
79964ac8 65 IN EFI_HANDLE DispatchHandle,\r
66 IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext\r
67 );\r
68\r
69/**\r
f22f941e 70 Register a child SMI source dispatch function with a parent SMM driver.\r
79964ac8 71\r
f22f941e 72 @param This The pointer to the EFI_SMM_SW_DISPATCH_PROTOCOL instance.\r
73 @param DispatchFunction The function to install.\r
74 @param DispatchContext The pointer to the dispatch function's context.\r
5259c97d 75 Indicates to the register\r
1c2f052d 76 function the Software SMI input value for which\r
f22f941e 77 to invoke the dispatch function.\r
1c2f052d 78 @param DispatchHandle The handle generated by the dispatcher to track\r
f22f941e 79 the function instance.\r
79964ac8 80\r
81 @retval EFI_SUCCESS The dispatch function has been successfully\r
82 registered and the SMI source has been enabled.\r
5259c97d 83 @retval EFI_DEVICE_ERROR The SW driver could not enable the SMI source.\r
79964ac8 84 @retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this\r
85 child.\r
86 @retval EFI_INVALID_PARAMETER DispatchContext is invalid. The SW SMI input value\r
87 is not within valid range.\r
88\r
89**/\r
90typedef\r
91EFI_STATUS\r
69686d56 92(EFIAPI *EFI_SMM_SW_REGISTER)(\r
700a7869 93 IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,\r
94 IN EFI_SMM_SW_DISPATCH DispatchFunction,\r
95 IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext,\r
96 OUT EFI_HANDLE *DispatchHandle\r
79964ac8 97 );\r
98\r
99/**\r
100 Unregister a child SMI source dispatch function with a parent SMM driver\r
101\r
f22f941e 102 @param This The pointer to the EFI_SMM_SW_DISPATCH_PROTOCOL instance.\r
103 @param DispatchHandle The handle of the service to remove.\r
79964ac8 104\r
105 @retval EFI_SUCCESS The dispatch function has been successfully\r
106 unregistered and the SMI source has been disabled\r
107 if there are no other registered child dispatch\r
108 functions for this SMI source.\r
f22f941e 109 @retval EFI_INVALID_PARAMETER The handle is invalid.\r
79964ac8 110\r
111**/\r
112typedef\r
113EFI_STATUS\r
69686d56 114(EFIAPI *EFI_SMM_SW_UNREGISTER)(\r
700a7869 115 IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,\r
116 IN EFI_HANDLE DispatchHandle\r
79964ac8 117 );\r
118\r
da879e3f 119\r
79964ac8 120//\r
121// Interface structure for the SMM Software SMI Dispatch Protocol\r
122//\r
123/**\r
79964ac8 124 Provides the parent dispatch service for a given SMI source generator.\r
79964ac8 125**/\r
da879e3f 126///\r
f22f941e 127/// Inconsistent with the specification here:\r
1c2f052d 128/// In The Framework specification SmmCis, this definition is named as\r
f22f941e 129/// _EFI_SMM_ICHN_DISPATCH_PROTOCOL by mistake.\r
da879e3f 130///\r
79964ac8 131struct _EFI_SMM_SW_DISPATCH_PROTOCOL {\r
2bbaeb0d 132 ///\r
133 /// Installs a child service to be dispatched by this protocol.\r
134 ///\r
79964ac8 135 EFI_SMM_SW_REGISTER Register;\r
2bbaeb0d 136\r
137 ///\r
138 /// Removes a child service dispatched by this protocol.\r
139 ///\r
79964ac8 140 EFI_SMM_SW_UNREGISTER UnRegister;\r
2bbaeb0d 141\r
142 ///\r
143 /// A read-only field that describes the maximum value that can be used\r
144 /// in the EFI_SMM_SW_DISPATCH_PROTOCOL.Register() service.\r
145 ///\r
146 UINTN MaximumSwiValue;\r
79964ac8 147};\r
148\r
149extern EFI_GUID gEfiSmmSwDispatchProtocolGuid;\r
150\r
151#endif\r