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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | PxeDhcp4.c\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | --*/\r | |
18 | \r | |
19 | \r | |
20 | #include "PxeDhcp4.h"\r | |
21 | \r | |
878ddf1f | 22 | //\r |
23 | // PXE DHCP Protocol Interface\r | |
24 | //\r | |
25 | EFI_DRIVER_BINDING_PROTOCOL gPxeDhcp4DriverBinding = {\r | |
26 | PxeDhcp4DriverBindingSupported,\r | |
27 | PxeDhcp4DriverBindingStart,\r | |
28 | PxeDhcp4DriverBindingStop,\r | |
61fb1657 | 29 | 0xa,\r |
878ddf1f | 30 | NULL,\r |
31 | NULL\r | |
32 | };\r | |
33 | \r | |
34 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
35 | EFI_STATUS\r | |
36 | EFIAPI\r | |
37 | PxeDhcp4DriverBindingSupported (\r | |
38 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
39 | IN EFI_HANDLE ControllerHandle,\r | |
40 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
41 | )\r | |
42 | /*++\r | |
43 | \r | |
44 | Routine Description:\r | |
45 | Test to see if this driver supports ControllerHandle. Any\r | |
46 | ControllerHandle that contains a PxeBaseCode protocol can be\r | |
47 | supported.\r | |
48 | \r | |
49 | Arguments:\r | |
50 | This - Protocol instance pointer.\r | |
51 | ControllerHandle - Handle of device to test.\r | |
52 | RemainingDevicePath - Not used.\r | |
53 | \r | |
54 | Returns:\r | |
55 | EFI_SUCCESS - This driver supports this device.\r | |
56 | EFI_ALREADY_STARTED - This driver is already running on this\r | |
57 | device.\r | |
58 | other - This driver does not support this device.\r | |
59 | \r | |
60 | --*/\r | |
61 | {\r | |
62 | EFI_STATUS Status;\r | |
63 | EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;\r | |
64 | \r | |
65 | //\r | |
66 | // Open the IO Abstraction(s) needed to perform the supported test.\r | |
67 | //\r | |
68 | Status = gBS->OpenProtocol (\r | |
69 | ControllerHandle,\r | |
70 | &gEfiPxeBaseCodeProtocolGuid,\r | |
71 | (VOID **) &PxeBc,\r | |
72 | This->DriverBindingHandle,\r | |
73 | ControllerHandle,\r | |
74 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
75 | );\r | |
76 | \r | |
77 | if (EFI_ERROR (Status)) {\r | |
78 | return Status;\r | |
79 | }\r | |
80 | //\r | |
81 | // Close the I/O Abstraction(s) used to perform the supported test.\r | |
82 | //\r | |
83 | return gBS->CloseProtocol (\r | |
84 | ControllerHandle,\r | |
85 | &gEfiPxeBaseCodeProtocolGuid,\r | |
86 | This->DriverBindingHandle,\r | |
87 | ControllerHandle\r | |
88 | );\r | |
89 | }\r | |
90 | \r | |
91 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
92 | EFI_STATUS\r | |
93 | EFIAPI\r | |
94 | PxeDhcp4DriverBindingStart (\r | |
95 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
96 | IN EFI_HANDLE ControllerHandle,\r | |
97 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
98 | )\r | |
99 | /*++\r | |
100 | \r | |
101 | Routine Description:\r | |
102 | Start this driver on ControllerHandle by opening a PxeBaseCode\r | |
103 | protocol and installing a PxeDhcp4 protocol on ControllerHandle.\r | |
104 | \r | |
105 | Arguments:\r | |
106 | This - Protocol instance pointer.\r | |
107 | ControllerHandle - Handle of device to bind driver to.\r | |
108 | RemainingDevicePath - Not used, always produce all possible\r | |
109 | children.\r | |
110 | \r | |
111 | Returns:\r | |
112 | EFI_SUCCESS - This driver is added to ControllerHandle.\r | |
113 | EFI_ALREADY_STARTED - This driver is already running on\r | |
114 | ControllerHandle.\r | |
115 | other - This driver does not support this device.\r | |
116 | \r | |
117 | --*/\r | |
118 | {\r | |
119 | EFI_STATUS Status;\r | |
120 | EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;\r | |
121 | EFI_SIMPLE_NETWORK_PROTOCOL *Snp;\r | |
122 | PXE_DHCP4_PRIVATE_DATA *Private;\r | |
123 | \r | |
124 | //\r | |
125 | // Connect to the PxeBaseCode interface on ControllerHandle.\r | |
126 | //\r | |
127 | Status = gBS->OpenProtocol (\r | |
128 | ControllerHandle,\r | |
129 | &gEfiPxeBaseCodeProtocolGuid,\r | |
130 | (VOID **) &PxeBc,\r | |
131 | This->DriverBindingHandle,\r | |
132 | ControllerHandle,\r | |
133 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
134 | );\r | |
135 | \r | |
136 | if (EFI_ERROR (Status)) {\r | |
137 | return Status;\r | |
138 | }\r | |
139 | //\r | |
140 | // BaseCode has already grabbed the SimpleNetwork interface\r | |
141 | // so just do a HandleProtocol() to get it.\r | |
142 | //\r | |
143 | Status = gBS->HandleProtocol (\r | |
144 | ControllerHandle,\r | |
145 | &gEfiSimpleNetworkProtocolGuid,\r | |
146 | (VOID **) &Snp\r | |
147 | );\r | |
148 | \r | |
149 | if (EFI_ERROR (Status)) {\r | |
150 | goto error_exit;\r | |
151 | }\r | |
152 | \r | |
153 | ASSERT (Snp);\r | |
154 | \r | |
155 | //\r | |
156 | // Initialize the PXE DHCP device instance.\r | |
157 | //\r | |
158 | Status = gBS->AllocatePool (\r | |
159 | EfiBootServicesData,\r | |
160 | sizeof (PXE_DHCP4_PRIVATE_DATA),\r | |
161 | (VOID **) &Private\r | |
162 | );\r | |
163 | \r | |
164 | if (EFI_ERROR (Status)) {\r | |
165 | goto error_exit;\r | |
166 | }\r | |
167 | //\r | |
168 | //\r | |
169 | //\r | |
170 | ZeroMem (Private, sizeof (PXE_DHCP4_PRIVATE_DATA));\r | |
171 | \r | |
172 | Private->Signature = PXE_DHCP4_PRIVATE_DATA_SIGNATURE;\r | |
173 | Private->PxeBc = PxeBc;\r | |
174 | Private->Snp = Snp;\r | |
175 | Private->Handle = ControllerHandle;\r | |
176 | Private->PxeDhcp4.Revision = EFI_PXE_DHCP4_PROTOCOL_REVISION;\r | |
177 | Private->PxeDhcp4.Run = PxeDhcp4Run;\r | |
178 | Private->PxeDhcp4.Setup = PxeDhcp4Setup;\r | |
179 | Private->PxeDhcp4.Init = PxeDhcp4Init;\r | |
180 | Private->PxeDhcp4.Select = PxeDhcp4Select;\r | |
181 | Private->PxeDhcp4.Renew = PxeDhcp4Renew;\r | |
182 | Private->PxeDhcp4.Rebind = PxeDhcp4Rebind;\r | |
183 | Private->PxeDhcp4.Release = PxeDhcp4Release;\r | |
184 | Private->PxeDhcp4.Data = NULL;\r | |
185 | \r | |
186 | //\r | |
187 | // Install protocol interfaces for the PXE DHCP device.\r | |
188 | //\r | |
189 | Status = gBS->InstallProtocolInterface (\r | |
190 | &ControllerHandle,\r | |
191 | &gEfiPxeDhcp4ProtocolGuid,\r | |
192 | EFI_NATIVE_INTERFACE,\r | |
193 | &Private->PxeDhcp4\r | |
194 | );\r | |
195 | \r | |
196 | if (!EFI_ERROR (Status)) {\r | |
197 | return Status;\r | |
198 | }\r | |
199 | \r | |
200 | error_exit: ;\r | |
201 | gBS->CloseProtocol (\r | |
202 | ControllerHandle,\r | |
203 | &gEfiPxeBaseCodeProtocolGuid,\r | |
204 | This->DriverBindingHandle,\r | |
205 | ControllerHandle\r | |
206 | );\r | |
207 | \r | |
208 | return Status;\r | |
209 | }\r | |
210 | \r | |
211 | /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */\r | |
212 | EFI_STATUS\r | |
213 | EFIAPI\r | |
214 | PxeDhcp4DriverBindingStop (\r | |
215 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
216 | IN EFI_HANDLE ControllerHandle,\r | |
217 | IN UINTN NumberOfChildren,\r | |
218 | IN EFI_HANDLE *ChildHandleBuffer\r | |
219 | )\r | |
220 | /*++\r | |
221 | \r | |
222 | Routine Description:\r | |
223 | Stop this driver on ControllerHandle by removing PXE DHCP\r | |
224 | protocol and closing the PXE Base Code protocol on\r | |
225 | ControllerHandle.\r | |
226 | \r | |
227 | Arguments:\r | |
228 | This - Protocol instance pointer.\r | |
229 | ControllerHandle - Handle of device to stop driver on.\r | |
230 | NumberOfChildren - Not used.\r | |
231 | ChildHandleBuffer - Not used.\r | |
232 | \r | |
233 | Returns:\r | |
234 | EFI_SUCCESS - This driver is removed ControllerHandle.\r | |
235 | other - This driver was not removed from this\r | |
236 | device.\r | |
237 | \r | |
238 | --*/\r | |
239 | {\r | |
240 | EFI_STATUS Status;\r | |
241 | EFI_PXE_DHCP4_PROTOCOL *PxeDhcp4;\r | |
242 | PXE_DHCP4_PRIVATE_DATA *Private;\r | |
243 | \r | |
244 | //\r | |
245 | // Get our context back.\r | |
246 | //\r | |
247 | Status = gBS->OpenProtocol (\r | |
248 | ControllerHandle,\r | |
249 | &gEfiPxeDhcp4ProtocolGuid,\r | |
250 | (VOID **) &PxeDhcp4,\r | |
251 | This->DriverBindingHandle,\r | |
252 | ControllerHandle,\r | |
253 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
254 | );\r | |
255 | \r | |
256 | if (EFI_ERROR (Status)) {\r | |
257 | return EFI_UNSUPPORTED;\r | |
258 | }\r | |
259 | \r | |
260 | Private = PXE_DHCP4_PRIVATE_DATA_FROM_THIS (PxeDhcp4);\r | |
261 | \r | |
262 | //\r | |
263 | // Release allocated resources\r | |
264 | //\r | |
265 | if (Private->PxeDhcp4.Data) {\r | |
266 | gBS->FreePool (Private->PxeDhcp4.Data);\r | |
267 | Private->PxeDhcp4.Data = NULL;\r | |
268 | }\r | |
269 | //\r | |
270 | // Uninstall our protocol\r | |
271 | //\r | |
272 | Status = gBS->UninstallProtocolInterface (\r | |
273 | ControllerHandle,\r | |
274 | &gEfiPxeDhcp4ProtocolGuid,\r | |
275 | &Private->PxeDhcp4\r | |
276 | );\r | |
277 | \r | |
278 | if (EFI_ERROR (Status)) {\r | |
279 | return Status;\r | |
280 | }\r | |
281 | //\r | |
282 | // Close any consumed protocols\r | |
283 | //\r | |
284 | Status = gBS->CloseProtocol (\r | |
285 | ControllerHandle,\r | |
286 | &gEfiPxeBaseCodeProtocolGuid,\r | |
287 | This->DriverBindingHandle,\r | |
288 | ControllerHandle\r | |
289 | );\r | |
290 | \r | |
291 | if (EFI_ERROR (Status)) {\r | |
292 | return Status;\r | |
293 | }\r | |
294 | //\r | |
295 | // Release our private data\r | |
296 | //\r | |
297 | gBS->FreePool (Private);\r | |
298 | \r | |
299 | return Status;\r | |
300 | }\r | |
301 | \r | |
302 | /* EOF - PxeDhcp4.c */\r |