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1 | /** @file\r | |
2 | Implement the driver binding protocol for the socket layer.\r | |
3 | \r | |
4 | Copyright (c) 2011, 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 | **/\r | |
14 | \r | |
15 | #include "Socket.h"\r | |
16 | \r | |
17 | /**\r | |
18 | Verify the controller type\r | |
19 | \r | |
20 | Determine if any of the network service binding protocols exist on\r | |
21 | the controller handle. If so, verify that these protocols are not\r | |
22 | already in use. Call ::DriverStart for any network service binding\r | |
23 | protocol that is not in use.\r | |
24 | \r | |
25 | @param [in] pThis Protocol instance pointer.\r | |
26 | @param [in] Controller Handle of device to test.\r | |
27 | @param [in] pRemainingDevicePath Not used.\r | |
28 | \r | |
29 | @retval EFI_SUCCESS This driver supports this device.\r | |
30 | @retval other This driver does not support this device.\r | |
31 | \r | |
32 | **/\r | |
33 | EFI_STATUS\r | |
34 | EFIAPI\r | |
35 | DriverSupported (\r | |
36 | IN EFI_DRIVER_BINDING_PROTOCOL * pThis,\r | |
37 | IN EFI_HANDLE Controller,\r | |
38 | IN EFI_DEVICE_PATH_PROTOCOL * pRemainingDevicePath\r | |
39 | )\r | |
40 | {\r | |
41 | CONST DT_SOCKET_BINDING * pEnd;\r | |
42 | VOID * pInterface;\r | |
43 | CONST DT_SOCKET_BINDING * pSocketBinding;\r | |
44 | EFI_STATUS Status;\r | |
45 | \r | |
46 | //\r | |
47 | // Assume the list is empty\r | |
48 | //\r | |
49 | Status = EFI_UNSUPPORTED;\r | |
50 | \r | |
51 | //\r | |
52 | // Walk the list of network connection points\r | |
53 | //\r | |
54 | pSocketBinding = &cEslSocketBinding[0];\r | |
55 | pEnd = &pSocketBinding[ cEslSocketBindingEntries ];\r | |
56 | while ( pEnd > pSocketBinding ) {\r | |
57 | //\r | |
58 | // Determine if the controller supports the network protocol\r | |
59 | //\r | |
60 | Status = gBS->OpenProtocol (\r | |
61 | Controller,\r | |
62 | pSocketBinding->pNetworkBinding,\r | |
63 | &pInterface,\r | |
64 | pThis->DriverBindingHandle,\r | |
65 | Controller,\r | |
66 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
67 | );\r | |
68 | if ( !EFI_ERROR ( Status )) {\r | |
69 | //\r | |
70 | // Determine if the driver is already connected\r | |
71 | //\r | |
72 | Status = gBS->OpenProtocol (\r | |
73 | Controller,\r | |
74 | (EFI_GUID *)pSocketBinding->pTagGuid,\r | |
75 | &pInterface,\r | |
76 | pThis->DriverBindingHandle,\r | |
77 | Controller,\r | |
78 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
79 | );\r | |
80 | if ( !EFI_ERROR ( Status )) {\r | |
81 | Status = EFI_ALREADY_STARTED;\r | |
82 | }\r | |
83 | else {\r | |
84 | if ( EFI_UNSUPPORTED == Status ) {\r | |
85 | //\r | |
86 | // Connect the driver since the tag is not present\r | |
87 | //\r | |
88 | Status = EFI_SUCCESS;\r | |
89 | }\r | |
90 | }\r | |
91 | }\r | |
92 | \r | |
93 | //\r | |
94 | // Set the next network protocol\r | |
95 | //\r | |
96 | pSocketBinding += 1;\r | |
97 | }\r | |
98 | \r | |
99 | //\r | |
100 | // Return the device supported status\r | |
101 | //\r | |
102 | return Status;\r | |
103 | }\r | |
104 | \r | |
105 | \r | |
106 | /**\r | |
107 | Connect to the network service bindings\r | |
108 | \r | |
109 | Walk the network service protocols on the controller handle and\r | |
110 | locate any that are not in use. Create service structures to\r | |
111 | manage the service binding for the socket driver.\r | |
112 | \r | |
113 | @param [in] pThis Protocol instance pointer.\r | |
114 | @param [in] Controller Handle of device to work with.\r | |
115 | @param [in] pRemainingDevicePath Not used, always produce all possible children.\r | |
116 | \r | |
117 | @retval EFI_SUCCESS This driver is added to Controller.\r | |
118 | @retval other This driver does not support this device.\r | |
119 | \r | |
120 | **/\r | |
121 | EFI_STATUS\r | |
122 | EFIAPI\r | |
123 | DriverStart (\r | |
124 | IN EFI_DRIVER_BINDING_PROTOCOL * pThis,\r | |
125 | IN EFI_HANDLE Controller,\r | |
126 | IN EFI_DEVICE_PATH_PROTOCOL * pRemainingDevicePath\r | |
127 | )\r | |
128 | {\r | |
129 | EFI_STATUS Status;\r | |
130 | \r | |
131 | DBG_ENTER ( );\r | |
132 | \r | |
133 | //\r | |
134 | // Connect to this network adapter\r | |
135 | //\r | |
136 | Status = EslServiceConnect ( pThis->DriverBindingHandle,\r | |
137 | Controller );\r | |
138 | \r | |
139 | //\r | |
140 | // Display the driver start status\r | |
141 | //\r | |
142 | DBG_EXIT_STATUS ( Status );\r | |
143 | return Status;\r | |
144 | }\r | |
145 | \r | |
146 | \r | |
147 | /**\r | |
148 | Stop this driver on Controller by removing NetworkInterfaceIdentifier protocol and\r | |
149 | closing the DevicePath and PciIo protocols on Controller.\r | |
150 | \r | |
151 | @param [in] pThis Protocol instance pointer.\r | |
152 | @param [in] Controller Handle of device to stop driver on.\r | |
153 | @param [in] NumberOfChildren How many children need to be stopped.\r | |
154 | @param [in] pChildHandleBuffer Not used.\r | |
155 | \r | |
156 | @retval EFI_SUCCESS This driver is removed Controller.\r | |
157 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
158 | @retval other This driver was not removed from this device.\r | |
159 | \r | |
160 | **/\r | |
161 | EFI_STATUS\r | |
162 | EFIAPI\r | |
163 | DriverStop (\r | |
164 | IN EFI_DRIVER_BINDING_PROTOCOL * pThis,\r | |
165 | IN EFI_HANDLE Controller,\r | |
166 | IN UINTN NumberOfChildren,\r | |
167 | IN EFI_HANDLE * pChildHandleBuffer\r | |
168 | )\r | |
169 | {\r | |
170 | EFI_STATUS Status;\r | |
171 | \r | |
172 | DBG_ENTER ( );\r | |
173 | \r | |
174 | //\r | |
175 | // Disconnect the network adapters\r | |
176 | //\r | |
177 | Status = EslServiceDisconnect ( pThis->DriverBindingHandle,\r | |
178 | Controller );\r | |
179 | \r | |
180 | //\r | |
181 | // Display the driver start status\r | |
182 | //\r | |
183 | DBG_EXIT_STATUS ( Status );\r | |
184 | return Status;\r | |
185 | }\r | |
186 | \r | |
187 | \r | |
188 | /**\r | |
189 | Driver binding protocol definition\r | |
190 | **/\r | |
191 | EFI_DRIVER_BINDING_PROTOCOL gDriverBinding = {\r | |
192 | DriverSupported,\r | |
193 | DriverStart,\r | |
194 | DriverStop,\r | |
195 | 0xa,\r | |
196 | NULL,\r | |
197 | NULL\r | |
198 | };\r |