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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 4Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
22a69a5e 5SPDX-License-Identifier: BSD-2-Clause-Patent\r
79964ac8 6\r
79964ac8 7 @par Revision Reference:\r
05ef5a88 8 This Protocol is defined in Framework for EFI SMM Core Interface Spec\r
79964ac8 9 Version 0.9.\r
10\r
11**/\r
12\r
13#ifndef _EFI_SMM_SW_DISPATCH_H_\r
14#define _EFI_SMM_SW_DISPATCH_H_\r
15\r
b80fbe85 16\r
79964ac8 17//\r
18// Global ID for the SW SMI Protocol\r
19//\r
20#define EFI_SMM_SW_DISPATCH_PROTOCOL_GUID \\r
21 { \\r
22 0xe541b773, 0xdd11, 0x420c, {0xb0, 0x26, 0xdf, 0x99, 0x36, 0x53, 0xf8, 0xbf } \\r
23 }\r
24\r
25typedef struct _EFI_SMM_SW_DISPATCH_PROTOCOL EFI_SMM_SW_DISPATCH_PROTOCOL;\r
26\r
27//\r
28// Related Definitions\r
29//\r
30//\r
31// A particular chipset may not support all possible software SMI input values.\r
32// For example, the ICH supports only values 00h to 0FFh. The parent only allows a single\r
33// child registration for each SwSmiInputValue.\r
34//\r
35typedef struct {\r
36 UINTN SwSmiInputValue;\r
37} EFI_SMM_SW_DISPATCH_CONTEXT;\r
38\r
39//\r
40// Member functions\r
41//\r
42/**\r
43 Dispatch function for a Software SMI handler.\r
44\r
f22f941e 45 @param DispatchHandle The handle of this dispatch function.\r
46 @param DispatchContext The pointer to the dispatch function's context.\r
79964ac8 47 The SwSmiInputValue field is filled in\r
48 by the software dispatch driver prior to\r
49 invoking this dispatch function.\r
50 The dispatch function will only be called\r
51 for input values for which it is registered.\r
52\r
700a7869 53 @return None\r
79964ac8 54\r
55**/\r
56typedef\r
57VOID\r
69686d56 58(EFIAPI *EFI_SMM_SW_DISPATCH)(\r
79964ac8 59 IN EFI_HANDLE DispatchHandle,\r
60 IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext\r
61 );\r
62\r
63/**\r
f22f941e 64 Register a child SMI source dispatch function with a parent SMM driver.\r
79964ac8 65\r
f22f941e 66 @param This The pointer to the EFI_SMM_SW_DISPATCH_PROTOCOL instance.\r
67 @param DispatchFunction The function to install.\r
68 @param DispatchContext The pointer to the dispatch function's context.\r
5259c97d 69 Indicates to the register\r
1c2f052d 70 function the Software SMI input value for which\r
f22f941e 71 to invoke the dispatch function.\r
1c2f052d 72 @param DispatchHandle The handle generated by the dispatcher to track\r
f22f941e 73 the function instance.\r
79964ac8 74\r
75 @retval EFI_SUCCESS The dispatch function has been successfully\r
76 registered and the SMI source has been enabled.\r
5259c97d 77 @retval EFI_DEVICE_ERROR The SW driver could not enable the SMI source.\r
79964ac8 78 @retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this\r
79 child.\r
80 @retval EFI_INVALID_PARAMETER DispatchContext is invalid. The SW SMI input value\r
81 is not within valid range.\r
82\r
83**/\r
84typedef\r
85EFI_STATUS\r
69686d56 86(EFIAPI *EFI_SMM_SW_REGISTER)(\r
700a7869 87 IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,\r
88 IN EFI_SMM_SW_DISPATCH DispatchFunction,\r
89 IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext,\r
90 OUT EFI_HANDLE *DispatchHandle\r
79964ac8 91 );\r
92\r
93/**\r
94 Unregister a child SMI source dispatch function with a parent SMM driver\r
95\r
f22f941e 96 @param This The pointer to the EFI_SMM_SW_DISPATCH_PROTOCOL instance.\r
97 @param DispatchHandle The handle of the service to remove.\r
79964ac8 98\r
99 @retval EFI_SUCCESS The dispatch function has been successfully\r
100 unregistered and the SMI source has been disabled\r
101 if there are no other registered child dispatch\r
102 functions for this SMI source.\r
f22f941e 103 @retval EFI_INVALID_PARAMETER The handle is invalid.\r
79964ac8 104\r
105**/\r
106typedef\r
107EFI_STATUS\r
69686d56 108(EFIAPI *EFI_SMM_SW_UNREGISTER)(\r
700a7869 109 IN EFI_SMM_SW_DISPATCH_PROTOCOL *This,\r
110 IN EFI_HANDLE DispatchHandle\r
79964ac8 111 );\r
112\r
da879e3f 113\r
79964ac8 114//\r
115// Interface structure for the SMM Software SMI Dispatch Protocol\r
116//\r
117/**\r
79964ac8 118 Provides the parent dispatch service for a given SMI source generator.\r
79964ac8 119**/\r
da879e3f 120///\r
f22f941e 121/// Inconsistent with the specification here:\r
1c2f052d 122/// In The Framework specification SmmCis, this definition is named as\r
f22f941e 123/// _EFI_SMM_ICHN_DISPATCH_PROTOCOL by mistake.\r
da879e3f 124///\r
79964ac8 125struct _EFI_SMM_SW_DISPATCH_PROTOCOL {\r
2bbaeb0d 126 ///\r
127 /// Installs a child service to be dispatched by this protocol.\r
128 ///\r
79964ac8 129 EFI_SMM_SW_REGISTER Register;\r
2bbaeb0d 130\r
131 ///\r
132 /// Removes a child service dispatched by this protocol.\r
133 ///\r
79964ac8 134 EFI_SMM_SW_UNREGISTER UnRegister;\r
2bbaeb0d 135\r
136 ///\r
137 /// A read-only field that describes the maximum value that can be used\r
138 /// in the EFI_SMM_SW_DISPATCH_PROTOCOL.Register() service.\r
139 ///\r
140 UINTN MaximumSwiValue;\r
79964ac8 141};\r
142\r
143extern EFI_GUID gEfiSmmSwDispatchProtocolGuid;\r
144\r
145#endif\r