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d1f95000 | 1 | /** @file\r |
4ca9b6c4 LG |
2 | UEFI DriverBinding Protocol is defined in UEFI specification.\r |
3 | \r | |
4 | This protocol is produced by every driver that follows the UEFI Driver Model, \r | |
5 | and it is the central component that allows drivers and controllers to be managed.\r | |
d1f95000 | 6 | \r |
4ca9b6c4 | 7 | Copyright (c) 2006 - 2008, Intel Corporation \r |
d1f95000 | 8 | All rights reserved. This program and the accompanying materials \r |
9 | are licensed and made available under the terms and conditions of the BSD License \r | |
10 | which accompanies this distribution. The full text of the license may be found at \r | |
11 | http://opensource.org/licenses/bsd-license.php \r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
15 | \r | |
d1f95000 | 16 | **/\r |
17 | \r | |
18 | #ifndef __EFI_DRIVER_BINDING_H__\r | |
19 | #define __EFI_DRIVER_BINDING_H__\r | |
20 | \r | |
1a5589a1 | 21 | #include <Protocol/DevicePath.h>\r |
99e8ed21 | 22 | ///\r |
23 | /// Global ID for the ControllerHandle Driver Protocol\r | |
24 | ///\r | |
d1f95000 | 25 | #define EFI_DRIVER_BINDING_PROTOCOL_GUID \\r |
26 | { \\r | |
27 | 0x18a031ab, 0xb443, 0x4d1a, {0xa5, 0xc0, 0xc, 0x9, 0x26, 0x1e, 0x9f, 0x71 } \\r | |
28 | }\r | |
29 | \r | |
30 | typedef struct _EFI_DRIVER_BINDING_PROTOCOL EFI_DRIVER_BINDING_PROTOCOL;\r | |
31 | \r | |
32 | /**\r | |
74fec708 LG |
33 | Tests to see if this driver supports a given controller. If a child device is provided, \r |
34 | it further tests to see if this driver supports creating a handle for the specified child device.\r | |
35 | \r | |
6b005af9 | 36 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r |
37 | @param[in] ControllerHandle The handle of the controller to test. This handle \r | |
38 | must support a protocol interface that supplies \r | |
39 | an I/O abstraction to the driver.\r | |
40 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. \r | |
41 | This parameter is ignored by device drivers, and is optional for bus drivers.\r | |
42 | \r | |
43 | \r | |
44 | @retval EFI_SUCCESS The device specified by ControllerHandle and\r | |
45 | RemainingDevicePath is supported by the driver specified by This.\r | |
46 | @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r | |
47 | RemainingDevicePath is already being managed by the driver\r | |
48 | specified by This.\r | |
49 | @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r | |
50 | RemainingDevicePath is already being managed by a different\r | |
51 | driver or an application that requires exclusive acces.\r | |
52 | Currently not implemented.\r | |
53 | @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r | |
54 | RemainingDevicePath is not supported by the driver specified by This.\r | |
d1f95000 | 55 | **/\r |
56 | typedef\r | |
57 | EFI_STATUS\r | |
8b13229b | 58 | (EFIAPI *EFI_DRIVER_BINDING_SUPPORTED)(\r |
d1f95000 | 59 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
60 | IN EFI_HANDLE ControllerHandle,\r | |
61 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
ed66e1bc | 62 | );\r |
d1f95000 | 63 | \r |
64 | /**\r | |
74fec708 LG |
65 | Start this driver on ControllerHandle. The Start() function is designed to be \r |
66 | invoked from the EFI boot service ConnectController(). As a result, much of \r | |
67 | the error checking on the parameters to Start() has been moved into this \r | |
68 | common boot service. It is legal to call Start() from other locations, \r | |
69 | but the following calling restrictions must be followed or the system behavior will not be deterministic.\r | |
70 | 1. ControllerHandle must be a valid EFI_HANDLE.\r | |
71 | 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r | |
72 | EFI_DEVICE_PATH_PROTOCOL.\r | |
73 | 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r | |
74 | have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. \r | |
75 | \r | |
6b005af9 | 76 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r |
77 | @param[in] ControllerHandle The handle of the controller to start. This handle \r | |
78 | must support a protocol interface that supplies \r | |
79 | an I/O abstraction to the driver.\r | |
80 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. \r | |
81 | This parameter is ignored by device drivers, and is optional for bus drivers.\r | |
82 | \r | |
83 | @retval EFI_SUCCESS The device was started.\r | |
84 | @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.\r | |
85 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
86 | @retval Others The driver failded to start the device.\r | |
d1f95000 | 87 | **/\r |
88 | typedef\r | |
89 | EFI_STATUS\r | |
8b13229b | 90 | (EFIAPI *EFI_DRIVER_BINDING_START)(\r |
d1f95000 | 91 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
92 | IN EFI_HANDLE ControllerHandle,\r | |
93 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
ed66e1bc | 94 | );\r |
d1f95000 | 95 | \r |
96 | /**\r | |
74fec708 | 97 | Stop this driver on ControllerHandle. \r |
6b005af9 | 98 | \r |
99 | Release the control of this controller and remove the IScsi functions. The Stop()\r | |
100 | function is designed to be invoked from the EFI boot service DisconnectController(). \r | |
74fec708 LG |
101 | As a result, much of the error checking on the parameters to Stop() has been moved \r |
102 | into this common boot service. It is legal to call Stop() from other locations, \r | |
103 | but the following calling restrictions must be followed or the system behavior will not be deterministic.\r | |
104 | 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r | |
105 | same driver's Start() function.\r | |
106 | 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r | |
ff7630cc | 107 | EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r |
74fec708 LG |
108 | Start() function, and the Start() function must have called OpenProtocol() on\r |
109 | ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r | |
3354353d | 110 | \r |
6b005af9 | 111 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r |
112 | @param[in] ControllerHandle A handle to the device being stopped. The handle must \r | |
113 | support a bus specific I/O protocol for the driver \r | |
114 | to use to stop the device.\r | |
115 | @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.Not used.\r | |
116 | @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL \r | |
117 | if NumberOfChildren is 0.Not used.\r | |
118 | \r | |
119 | @retval EFI_SUCCESS The device was stopped.\r | |
120 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
d1f95000 | 121 | **/\r |
122 | typedef\r | |
123 | EFI_STATUS\r | |
8b13229b | 124 | (EFIAPI *EFI_DRIVER_BINDING_STOP)(\r |
d1f95000 | 125 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
126 | IN EFI_HANDLE ControllerHandle,\r | |
127 | IN UINTN NumberOfChildren,\r | |
128 | IN EFI_HANDLE *ChildHandleBuffer OPTIONAL\r | |
ed66e1bc | 129 | );\r |
d1f95000 | 130 | \r |
44717a39 | 131 | ///\r |
132 | /// This protocol provides the services required to determine if a driver supports a given controller. \r | |
133 | /// If a controller is supported, then it also provides routines to start and stop the controller.\r | |
134 | ///\r | |
d1f95000 | 135 | struct _EFI_DRIVER_BINDING_PROTOCOL {\r |
136 | EFI_DRIVER_BINDING_SUPPORTED Supported;\r | |
137 | EFI_DRIVER_BINDING_START Start;\r | |
138 | EFI_DRIVER_BINDING_STOP Stop;\r | |
3354353d | 139 | \r |
140 | ///\r | |
141 | /// The version number of the UEFI driver that produced the\r | |
142 | /// EFI_DRIVER_BINDING_PROTOCOL. This field is used by\r | |
143 | /// the EFI boot service ConnectController() to determine\r | |
144 | /// the order that driver's Supported() service will be used when\r | |
145 | /// a controller needs to be started. EFI Driver Binding Protocol\r | |
146 | /// instances with higher Version values will be used before ones\r | |
147 | /// with lower Version values. The Version values of 0x0-\r | |
148 | /// 0x0f and 0xfffffff0-0xffffffff are reserved for\r | |
149 | /// platform/OEM specific drivers. The Version values of 0x10-\r | |
150 | /// 0xffffffef are reserved for IHV-developed drivers.\r | |
151 | ///\r | |
d1f95000 | 152 | UINT32 Version;\r |
3354353d | 153 | \r |
154 | ///\r | |
155 | /// The image handle of the UEFI driver that produced this instance\r | |
156 | /// of the EFI_DRIVER_BINDING_PROTOCOL.\r | |
157 | ///\r | |
d1f95000 | 158 | EFI_HANDLE ImageHandle;\r |
3354353d | 159 | \r |
160 | ///\r | |
161 | /// The handle on which this instance of the\r | |
162 | /// EFI_DRIVER_BINDING_PROTOCOL is installed. In most\r | |
163 | /// cases, this is the same handle as ImageHandle. However, for\r | |
164 | /// UEFI drivers that produce more than one instance of the\r | |
165 | /// EFI_DRIVER_BINDING_PROTOCOL, this value may not be\r | |
166 | /// the same as ImageHandle. \r | |
167 | ///\r | |
d1f95000 | 168 | EFI_HANDLE DriverBindingHandle;\r |
169 | };\r | |
170 | \r | |
171 | extern EFI_GUID gEfiDriverBindingProtocolGuid;\r | |
172 | \r | |
173 | #endif\r |