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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
4 | \r\r | |
5 | This program and the accompanying materials are licensed and made available under\r\r | |
6 | the terms and conditions of the BSD License that accompanies this distribution. \r\r | |
7 | The full text of the license may be found at \r\r | |
8 | http://opensource.org/licenses/bsd-license.php. \r\r | |
9 | \r\r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r\r | |
12 | \r\r | |
13 | \r | |
14 | \r | |
15 | Module Name:\r | |
16 | \r | |
17 | LpcDriver.c\r | |
18 | \r | |
19 | Abstract:\r | |
20 | \r | |
21 | EFI Lpc Driver for a Generic PC Platform\r | |
22 | \r | |
23 | \r | |
24 | \r | |
25 | --*/\r | |
26 | \r | |
27 | #include "LpcDriver.h"\r | |
28 | #include "IndustryStandard/Pci22.h"\r | |
29 | \r | |
30 | //\r | |
31 | // This driver is for ACPI(PNP0A03,0)/PCI(0x1f,0)\r | |
32 | //\r | |
33 | \r | |
34 | //\r | |
35 | // Lpc Driver Global Variables\r | |
36 | //\r | |
37 | \r | |
38 | EFI_DRIVER_BINDING_PROTOCOL gLpcDriver = {\r | |
39 | LpcDriverSupported,\r | |
40 | LpcDriverStart,\r | |
41 | LpcDriverStop,\r | |
42 | 0x10,\r | |
43 | NULL,\r | |
44 | NULL\r | |
45 | };\r | |
46 | \r | |
47 | LPC_DEV mLpc = {\r | |
48 | LPC_DEV_SIGNATURE,\r | |
49 | NULL,\r | |
50 | {\r | |
51 | IsaDeviceEnumerate,\r | |
52 | IsaDeviceSetPower,\r | |
53 | IsaGetCurrentResource,\r | |
54 | IsaGetPossibleResource,\r | |
55 | IsaSetResource,\r | |
56 | IsaEnableDevice,\r | |
57 | IsaInitDevice,\r | |
58 | LpcInterfaceInit\r | |
59 | },\r | |
60 | NULL\r | |
61 | };\r | |
62 | \r | |
63 | BOOLEAN InitExecuted = FALSE;\r | |
64 | \r | |
65 | /**\r | |
66 | the entry point of the Lpc driver\r | |
67 | \r | |
68 | **/\r | |
69 | EFI_STATUS\r | |
70 | EFIAPI\r | |
71 | LpcDriverEntryPoint(\r | |
72 | IN EFI_HANDLE ImageHandle,\r | |
73 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
74 | )\r | |
75 | {\r | |
76 | \r | |
77 | \r | |
78 | return EfiLibInstallDriverBinding (ImageHandle, SystemTable, &gLpcDriver, ImageHandle);\r | |
79 | }\r | |
80 | \r | |
81 | /**\r | |
82 | \r | |
83 | ControllerDriver Protocol Method\r | |
84 | \r | |
85 | **/\r | |
86 | EFI_STATUS\r | |
87 | EFIAPI\r | |
88 | LpcDriverSupported (\r | |
89 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
90 | IN EFI_HANDLE Controller,\r | |
91 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
92 | )\r | |
93 | {\r | |
94 | EFI_STATUS Status;\r | |
95 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
96 | EFI_DEVICE_PATH_PROTOCOL *IsaBridgeDevicePath;\r | |
97 | \r | |
98 | ACPI_HID_DEVICE_PATH *AcpiNode;\r | |
99 | PCI_DEVICE_PATH *PciNode;\r | |
100 | PCI_TYPE00 Pci;\r | |
101 | \r | |
102 | //\r | |
103 | // Get the ISA bridge's Device Path and test it\r | |
104 | // the following code is specific\r | |
105 | //\r | |
106 | Status = gBS->OpenProtocol (\r | |
107 | Controller,\r | |
108 | &gEfiDevicePathProtocolGuid,\r | |
109 | (VOID **)&IsaBridgeDevicePath,\r | |
110 | This->DriverBindingHandle,\r | |
111 | Controller,\r | |
112 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
113 | );\r | |
114 | \r | |
115 | if (EFI_ERROR (Status)) {\r | |
116 | return Status;\r | |
117 | }\r | |
118 | \r | |
119 | Status = EFI_SUCCESS;\r | |
120 | AcpiNode = (ACPI_HID_DEVICE_PATH *)IsaBridgeDevicePath;\r | |
121 | if (AcpiNode->Header.Type != ACPI_DEVICE_PATH ||\r | |
122 | AcpiNode->Header.SubType != ACPI_DP ||\r | |
123 | DevicePathNodeLength (&AcpiNode->Header) != sizeof(ACPI_HID_DEVICE_PATH) ||\r | |
124 | AcpiNode -> HID != EISA_PNP_ID(0x0A03) ||\r | |
125 | AcpiNode -> UID != 0 ) {\r | |
126 | Status = EFI_UNSUPPORTED;\r | |
127 | } else {\r | |
128 | //\r | |
129 | // Get the next node\r | |
130 | //\r | |
131 | IsaBridgeDevicePath = NextDevicePathNode (IsaBridgeDevicePath);\r | |
132 | PciNode = (PCI_DEVICE_PATH *)IsaBridgeDevicePath;\r | |
133 | if (PciNode->Header.Type != HARDWARE_DEVICE_PATH ||\r | |
134 | PciNode->Header.SubType != HW_PCI_DP ||\r | |
135 | DevicePathNodeLength (&PciNode->Header) != sizeof (PCI_DEVICE_PATH) ||\r | |
136 | PciNode -> Function != 0x00 ||\r | |
137 | PciNode -> Device != 0x1f ) {\r | |
138 | Status = EFI_UNSUPPORTED;\r | |
139 | }\r | |
140 | }\r | |
141 | \r | |
142 | gBS->CloseProtocol (\r | |
143 | Controller,\r | |
144 | &gEfiDevicePathProtocolGuid,\r | |
145 | This->DriverBindingHandle,\r | |
146 | Controller\r | |
147 | );\r | |
148 | \r | |
149 | if (EFI_ERROR (Status)) {\r | |
150 | return EFI_UNSUPPORTED;\r | |
151 | }\r | |
152 | \r | |
153 | //\r | |
154 | // Get PciIo protocol instance\r | |
155 | //\r | |
156 | Status = gBS->OpenProtocol (\r | |
157 | Controller,\r | |
158 | &gEfiPciIoProtocolGuid,\r | |
159 | (VOID **)&PciIo,\r | |
160 | This->DriverBindingHandle,\r | |
161 | Controller,\r | |
162 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
163 | );\r | |
164 | \r | |
165 | if (EFI_ERROR(Status)) {\r | |
166 | return Status;\r | |
167 | }\r | |
168 | \r | |
169 | Status = PciIo->Pci.Read (\r | |
170 | PciIo,\r | |
171 | EfiPciIoWidthUint32,\r | |
172 | 0,\r | |
173 | sizeof(Pci) / sizeof(UINT32),\r | |
174 | &Pci\r | |
175 | );\r | |
176 | \r | |
177 | if (!EFI_ERROR (Status)) {\r | |
178 | Status = EFI_SUCCESS; //TODO: force return success as temp solution EFI_UNSUPPORTED;\r | |
179 | if ((Pci.Hdr.Command & 0x03) == 0x03) {\r | |
180 | if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {\r | |
181 | //\r | |
182 | // See if this is a standard PCI to ISA Bridge from the Base Code\r | |
183 | // and Class Code\r | |
184 | //\r | |
185 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {\r | |
186 | Status = EFI_SUCCESS;\r | |
187 | } else {\r | |
188 | }\r | |
189 | \r | |
190 | //\r | |
191 | // See if this is an Intel PCI to ISA bridge in Positive Decode Mode\r | |
192 | //\r | |
193 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&\r | |
194 | Pci.Hdr.VendorId == 0x8086 &&\r | |
195 | Pci.Hdr.DeviceId == 0x7110) {\r | |
196 | Status = EFI_SUCCESS;\r | |
197 | } else {\r | |
198 | }\r | |
199 | } else {\r | |
200 | }\r | |
201 | }\r | |
202 | else {\r | |
203 | }\r | |
204 | }\r | |
205 | \r | |
206 | gBS->CloseProtocol (\r | |
207 | Controller,\r | |
208 | &gEfiPciIoProtocolGuid,\r | |
209 | This->DriverBindingHandle,\r | |
210 | Controller\r | |
211 | );\r | |
212 | return Status;\r | |
213 | }\r | |
214 | \r | |
215 | \r | |
216 | /**\r | |
217 | Install EFI_ISA_ACPI_PROTOCOL\r | |
218 | \r | |
219 | **/\r | |
220 | EFI_STATUS\r | |
221 | EFIAPI\r | |
222 | LpcDriverStart (\r | |
223 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
224 | IN EFI_HANDLE Controller,\r | |
225 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
226 | )\r | |
227 | {\r | |
228 | EFI_STATUS Status;\r | |
229 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
3cbfba02 DW |
230 | \r |
231 | //\r | |
232 | // Get Pci IO\r | |
233 | //\r | |
234 | Status = gBS->OpenProtocol (\r | |
235 | Controller,\r | |
236 | &gEfiPciIoProtocolGuid,\r | |
237 | (VOID **)&PciIo,\r | |
238 | This->DriverBindingHandle,\r | |
239 | Controller,\r | |
240 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
241 | );\r | |
242 | \r | |
243 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
244 | return Status;\r | |
245 | }\r | |
246 | \r | |
247 | mLpc.PciIo = PciIo;\r | |
248 | \r | |
249 | //\r | |
250 | // Install IsaAcpi interface, the Sio interface is not installed!\r | |
251 | //\r | |
252 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
253 | &Controller,\r | |
254 | &gEfiIsaAcpiProtocolGuid,\r | |
255 | &mLpc.IsaAcpi,\r | |
256 | NULL\r | |
257 | );\r | |
258 | return Status;\r | |
259 | }\r | |
260 | \r | |
261 | \r | |
262 | EFI_STATUS\r | |
263 | EFIAPI\r | |
264 | LpcDriverStop (\r | |
265 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
266 | IN EFI_HANDLE Controller,\r | |
267 | IN UINTN NumberOfChildren,\r | |
268 | IN EFI_HANDLE *ChildHandleBuffer\r | |
269 | )\r | |
270 | {\r | |
271 | EFI_STATUS Status;\r | |
272 | EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r | |
273 | LPC_DEV *LpcDev;\r | |
274 | \r | |
275 | //\r | |
276 | // Get EFI_ISA_ACPI_PROTOCOL interface\r | |
277 | //\r | |
278 | Status = gBS->OpenProtocol (\r | |
279 | Controller,\r | |
280 | &gEfiIsaAcpiProtocolGuid,\r | |
281 | (VOID **)&IsaAcpi,\r | |
282 | This->DriverBindingHandle,\r | |
283 | Controller,\r | |
284 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
285 | );\r | |
286 | if (EFI_ERROR (Status)) {\r | |
287 | return Status;\r | |
288 | }\r | |
289 | \r | |
290 | LpcDev = LPC_ISA_ACPI_FROM_THIS (IsaAcpi);\r | |
291 | \r | |
292 | //\r | |
293 | // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL\r | |
294 | //\r | |
295 | Status = gBS->UninstallProtocolInterface (\r | |
296 | Controller,\r | |
297 | &gEfiIsaAcpiProtocolGuid,\r | |
298 | &LpcDev->IsaAcpi\r | |
299 | );\r | |
300 | if (EFI_ERROR (Status)) {\r | |
301 | return Status;\r | |
302 | }\r | |
303 | \r | |
304 | gBS->CloseProtocol (\r | |
305 | Controller,\r | |
306 | &gEfiPciIoProtocolGuid,\r | |
307 | This->DriverBindingHandle,\r | |
308 | Controller\r | |
309 | );\r | |
310 | \r | |
311 | return EFI_SUCCESS;\r | |
312 | }\r | |
313 | \r | |
314 | VOID\r | |
315 | LpcIoRead8 (\r | |
316 | IN UINT16 Port,\r | |
317 | OUT UINT8 *Data\r | |
318 | )\r | |
319 | {\r | |
320 | mLpc.PciIo->Io.Read(\r | |
321 | mLpc.PciIo,\r | |
322 | EfiPciWidthUint8,\r | |
323 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
324 | Port,\r | |
325 | 1,\r | |
326 | Data\r | |
327 | );\r | |
328 | }\r | |
329 | \r | |
330 | VOID\r | |
331 | LpcIoWrite8 (\r | |
332 | IN UINT16 Port,\r | |
333 | IN UINT8 Data\r | |
334 | )\r | |
335 | {\r | |
336 | mLpc.PciIo->Io.Write(\r | |
337 | mLpc.PciIo,\r | |
338 | EfiPciWidthUint8,\r | |
339 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
340 | Port,\r | |
341 | 1,\r | |
342 | &Data\r | |
343 | );\r | |
344 | }\r | |
345 | \r |