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1 | /** @file\r | |
2 | Provides the parent dispatch service for the USB SMI source generator.\r | |
3 | \r | |
4 | Copyright (c) 2007 - 2009, Intel Corporation\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | @par Revision Reference:\r | |
14 | This Protocol is defined in Framework of EFI SMM Core Interface Spec\r | |
15 | Version 0.9.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #ifndef _EFI_SMM_USB_DISPATCH_H_\r | |
20 | #define _EFI_SMM_USB_DISPATCH_H_\r | |
21 | \r | |
22 | #include <PiDxe.h>\r | |
23 | \r | |
24 | //\r | |
25 | // Global ID for the USB Protocol\r | |
26 | //\r | |
27 | #define EFI_SMM_USB_DISPATCH_PROTOCOL_GUID \\r | |
28 | { \\r | |
29 | 0xa05b6ffd, 0x87af, 0x4e42, {0x95, 0xc9, 0x62, 0x28, 0xb6, 0x3c, 0xf3, 0xf3 } \\r | |
30 | }\r | |
31 | \r | |
32 | typedef struct _EFI_SMM_USB_DISPATCH_PROTOCOL EFI_SMM_USB_DISPATCH_PROTOCOL;\r | |
33 | \r | |
34 | //\r | |
35 | // Related Definitions\r | |
36 | //\r | |
37 | typedef enum {\r | |
38 | UsbLegacy,\r | |
39 | UsbWake\r | |
40 | } EFI_USB_SMI_TYPE;\r | |
41 | \r | |
42 | typedef struct {\r | |
43 | ///\r | |
44 | /// Describes whether this child handler will be invoked in response to a USB legacy\r | |
45 | /// emulation event, such as port-trap on the PS/2* keyboard control registers, or to a\r | |
46 | /// USB wake event, such as resumption from a sleep state. \r | |
47 | ///\r | |
48 | EFI_USB_SMI_TYPE Type;\r | |
49 | ///\r | |
50 | /// The device path is part of the context structure and describes the location of the\r | |
51 | /// particular USB host controller in the system for which this register event will occur.\r | |
52 | /// This location is important because of the possible integration of several USB host\r | |
53 | /// controllers in a system. \r | |
54 | ///\r | |
55 | EFI_DEVICE_PATH_PROTOCOL *Device;\r | |
56 | } EFI_SMM_USB_DISPATCH_CONTEXT;\r | |
57 | \r | |
58 | //\r | |
59 | // Member functions\r | |
60 | //\r | |
61 | /**\r | |
62 | Dispatch function for a USB SMI handler.\r | |
63 | \r | |
64 | @param DispatchHandle Handle of this dispatch function.\r | |
65 | @param DispatchContext Pointer to the dispatch function's context.\r | |
66 | The DispatchContext fields are filled in\r | |
67 | by the dispatching driver prior to\r | |
68 | invoking this dispatch function.\r | |
69 | \r | |
70 | **/\r | |
71 | typedef\r | |
72 | VOID\r | |
73 | (EFIAPI *EFI_SMM_USB_DISPATCH)(\r | |
74 | IN EFI_HANDLE DispatchHandle,\r | |
75 | IN EFI_SMM_USB_DISPATCH_CONTEXT *DispatchContext\r | |
76 | );\r | |
77 | \r | |
78 | /**\r | |
79 | Register a child SMI source dispatch function with a parent SMM driver.\r | |
80 | \r | |
81 | @param This Pointer to the EFI_SMM_USB_DISPATCH_PROTOCOL instance.\r | |
82 | @param DispatchFunction Pointer to dispatch function to be invoked \r | |
83 | for this SMI source.\r | |
84 | @param DispatchContext Pointer to the dispatch function's context.\r | |
85 | The caller fills this context in before calling\r | |
86 | the register function to indicate to the register\r | |
87 | function the USB SMI types for which the dispatch\r | |
88 | function should be invoked.\r | |
89 | @param DispatchHandle Handle generated by the dispatcher to track the \r | |
90 | function instance.\r | |
91 | \r | |
92 | @retval EFI_SUCCESS The dispatch function has been successfully\r | |
93 | registered and the SMI source has been enabled.\r | |
94 | @retval EFI_DEVICE_ERROR The driver was unable to enable the SMI source.\r | |
95 | @retval EFI_OUT_OF_RESOURCES Not enough memory (system or SMM) to manage this\r | |
96 | child.\r | |
97 | @retval EFI_INVALID_PARAMETER DispatchContext is invalid. The USB SMI type\r | |
98 | is not within valid range.\r | |
99 | \r | |
100 | **/\r | |
101 | typedef\r | |
102 | EFI_STATUS\r | |
103 | (EFIAPI *EFI_SMM_USB_REGISTER)(\r | |
104 | IN EFI_SMM_USB_DISPATCH_PROTOCOL *This,\r | |
105 | IN EFI_SMM_USB_DISPATCH DispatchFunction,\r | |
106 | IN EFI_SMM_USB_DISPATCH_CONTEXT *DispatchContext,\r | |
107 | OUT EFI_HANDLE *DispatchHandle\r | |
108 | );\r | |
109 | \r | |
110 | /**\r | |
111 | Unregisters a USB service.\r | |
112 | \r | |
113 | @param This Pointer to the EFI_SMM_USB_DISPATCH_PROTOCOL instance.\r | |
114 | @param DispatchHandle Handle of the service to remove.\r | |
115 | \r | |
116 | @retval EFI_SUCCESS The dispatch function has been successfully\r | |
117 | unregistered and the SMI source has been disabled\r | |
118 | if there are no other registered child dispatch\r | |
119 | functions for this SMI source.\r | |
120 | @retval EFI_INVALID_PARAMETER The DispatchHandle was not valid.\r | |
121 | \r | |
122 | **/\r | |
123 | typedef\r | |
124 | EFI_STATUS\r | |
125 | (EFIAPI *EFI_SMM_USB_UNREGISTER)(\r | |
126 | IN EFI_SMM_USB_DISPATCH_PROTOCOL *This,\r | |
127 | IN EFI_HANDLE DispatchHandle\r | |
128 | );\r | |
129 | \r | |
130 | ///\r | |
131 | /// The EFI_SMM_USB_DISPATCH_PROTOCOL provides the ability to install child handlers for the\r | |
132 | /// given event types.\r | |
133 | ///\r | |
134 | struct _EFI_SMM_USB_DISPATCH_PROTOCOL {\r | |
135 | EFI_SMM_USB_REGISTER Register;\r | |
136 | EFI_SMM_USB_UNREGISTER UnRegister;\r | |
137 | };\r | |
138 | \r | |
139 | extern EFI_GUID gEfiSmmUsbDispatchProtocolGuid;\r | |
140 | \r | |
141 | #endif\r |