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1 | /** @file\r | |
2 | EFI PCAT ISA ACPI Driver for a Generic PC Platform\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved. <BR>\r | |
5 | 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 "PcatIsaAcpi.h"\r | |
16 | \r | |
17 | //\r | |
18 | // PcatIsaAcpi Driver Binding Protocol\r | |
19 | //\r | |
20 | EFI_DRIVER_BINDING_PROTOCOL gPcatIsaAcpiDriverBinding = {\r | |
21 | PcatIsaAcpiDriverBindingSupported,\r | |
22 | PcatIsaAcpiDriverBindingStart,\r | |
23 | PcatIsaAcpiDriverBindingStop,\r | |
24 | 0xa,\r | |
25 | NULL,\r | |
26 | NULL\r | |
27 | };\r | |
28 | \r | |
29 | /**\r | |
30 | the entry point of the PcatIsaAcpi driver.\r | |
31 | \r | |
32 | @param ImageHandle Handle for driver image\r | |
33 | @param SystemTable Point to EFI_SYSTEM_TABLE\r | |
34 | \r | |
35 | @return Sucess or not for installing driver binding protocol\r | |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | EFIAPI\r | |
39 | PcatIsaAcpiDriverEntryPoint (\r | |
40 | IN EFI_HANDLE ImageHandle,\r | |
41 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
42 | )\r | |
43 | {\r | |
44 | return EfiLibInstallDriverBindingComponentName2 (\r | |
45 | ImageHandle, \r | |
46 | SystemTable, \r | |
47 | &gPcatIsaAcpiDriverBinding,\r | |
48 | ImageHandle,\r | |
49 | &gPcatIsaAcpiComponentName,\r | |
50 | &gPcatIsaAcpiComponentName2\r | |
51 | );\r | |
52 | }\r | |
53 | \r | |
54 | /**\r | |
55 | ControllerDriver Protocol Method\r | |
56 | \r | |
57 | @param This Driver Binding protocol instance pointer. \r | |
58 | @param Controller Handle of device to test.\r | |
59 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
60 | device to start.\r | |
61 | @retval EFI_SUCCESS This driver supports this device.\r | |
62 | @retval other This driver does not support this device.\r | |
63 | \r | |
64 | **/\r | |
65 | EFI_STATUS\r | |
66 | EFIAPI\r | |
67 | PcatIsaAcpiDriverBindingSupported (\r | |
68 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
69 | IN EFI_HANDLE Controller,\r | |
70 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
71 | )\r | |
72 | {\r | |
73 | EFI_STATUS Status;\r | |
74 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
75 | PCI_TYPE00 Pci;\r | |
76 | \r | |
77 | //\r | |
78 | // Get PciIo protocol instance\r | |
79 | // \r | |
80 | Status = gBS->OpenProtocol (\r | |
81 | Controller, \r | |
82 | &gEfiPciIoProtocolGuid, \r | |
83 | (VOID**)&PciIo,\r | |
84 | This->DriverBindingHandle,\r | |
85 | Controller,\r | |
86 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
87 | );\r | |
88 | if (EFI_ERROR(Status)) {\r | |
89 | return Status;\r | |
90 | }\r | |
91 | \r | |
92 | Status = PciIo->Pci.Read (\r | |
93 | PciIo,\r | |
94 | EfiPciIoWidthUint32,\r | |
95 | 0,\r | |
96 | sizeof(Pci) / sizeof(UINT32), \r | |
97 | &Pci);\r | |
98 | \r | |
99 | if (!EFI_ERROR (Status)) {\r | |
100 | Status = EFI_UNSUPPORTED;\r | |
101 | if ((Pci.Hdr.Command & 0x03) == 0x03) {\r | |
102 | if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {\r | |
103 | //\r | |
104 | // See if this is a standard PCI to ISA Bridge from the Base Code and Class Code\r | |
105 | //\r | |
106 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {\r | |
107 | Status = EFI_SUCCESS;\r | |
108 | } \r | |
109 | \r | |
110 | //\r | |
111 | // See if this is an Intel PCI to ISA bridge in Positive Decode Mode\r | |
112 | //\r | |
113 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&\r | |
114 | Pci.Hdr.VendorId == 0x8086 && \r | |
115 | (Pci.Hdr.DeviceId & 0xF000) == 0x7000) {\r | |
116 | Status = EFI_SUCCESS;\r | |
117 | }\r | |
118 | } \r | |
119 | }\r | |
120 | }\r | |
121 | \r | |
122 | gBS->CloseProtocol (\r | |
123 | Controller, \r | |
124 | &gEfiPciIoProtocolGuid, \r | |
125 | This->DriverBindingHandle, \r | |
126 | Controller \r | |
127 | );\r | |
128 | \r | |
129 | return Status;\r | |
130 | }\r | |
131 | \r | |
132 | /**\r | |
133 | Install EFI_ISA_ACPI_PROTOCOL.\r | |
134 | \r | |
135 | @param This Driver Binding protocol instance pointer.\r | |
136 | @param ControllerHandle Handle of device to bind driver to.\r | |
137 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
138 | device to start.\r | |
139 | \r | |
140 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
141 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
142 | @retval other This driver does not support this device\r | |
143 | **/\r | |
144 | EFI_STATUS\r | |
145 | EFIAPI\r | |
146 | PcatIsaAcpiDriverBindingStart (\r | |
147 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
148 | IN EFI_HANDLE Controller,\r | |
149 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
150 | )\r | |
151 | {\r | |
152 | EFI_STATUS Status;\r | |
153 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
154 | PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r | |
155 | \r | |
156 | PcatIsaAcpiDev = NULL;\r | |
157 | //\r | |
158 | // Open the PCI I/O Protocol Interface\r | |
159 | //\r | |
160 | PciIo = NULL;\r | |
161 | Status = gBS->OpenProtocol (\r | |
162 | Controller, \r | |
163 | &gEfiPciIoProtocolGuid, \r | |
164 | (VOID**)&PciIo,\r | |
165 | This->DriverBindingHandle, \r | |
166 | Controller, \r | |
167 | EFI_OPEN_PROTOCOL_BY_DRIVER \r | |
168 | );\r | |
169 | if (EFI_ERROR (Status)) {\r | |
170 | goto Done;\r | |
171 | }\r | |
172 | \r | |
173 | Status = PciIo->Attributes (\r | |
174 | PciIo, \r | |
175 | EfiPciIoAttributeOperationEnable, \r | |
176 | EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO, \r | |
177 | NULL \r | |
178 | );\r | |
179 | if (EFI_ERROR (Status)) {\r | |
180 | goto Done;\r | |
181 | }\r | |
182 | \r | |
183 | //\r | |
184 | // Allocate memory for the PCAT ISA ACPI Device structure\r | |
185 | //\r | |
186 | PcatIsaAcpiDev = NULL;\r | |
187 | Status = gBS->AllocatePool (\r | |
188 | EfiBootServicesData,\r | |
189 | sizeof(PCAT_ISA_ACPI_DEV),\r | |
190 | (VOID**)&PcatIsaAcpiDev\r | |
191 | );\r | |
192 | if (EFI_ERROR (Status)) {\r | |
193 | goto Done;\r | |
194 | }\r | |
195 | \r | |
196 | //\r | |
197 | // Initialize the PCAT ISA ACPI Device structure\r | |
198 | //\r | |
199 | PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;\r | |
200 | PcatIsaAcpiDev->Handle = Controller;\r | |
201 | PcatIsaAcpiDev->PciIo = PciIo;\r | |
202 | \r | |
203 | //\r | |
204 | // IsaAcpi interface\r | |
205 | //\r | |
206 | (PcatIsaAcpiDev->IsaAcpi).DeviceEnumerate = IsaDeviceEnumerate;\r | |
207 | (PcatIsaAcpiDev->IsaAcpi).SetPower = IsaDeviceSetPower;\r | |
208 | (PcatIsaAcpiDev->IsaAcpi).GetCurResource = IsaGetCurrentResource;\r | |
209 | (PcatIsaAcpiDev->IsaAcpi).GetPosResource = IsaGetPossibleResource;\r | |
210 | (PcatIsaAcpiDev->IsaAcpi).SetResource = IsaSetResource;\r | |
211 | (PcatIsaAcpiDev->IsaAcpi).EnableDevice = IsaEnableDevice;\r | |
212 | (PcatIsaAcpiDev->IsaAcpi).InitDevice = IsaInitDevice;\r | |
213 | (PcatIsaAcpiDev->IsaAcpi).InterfaceInit = IsaInterfaceInit;\r | |
214 | \r | |
215 | //\r | |
216 | // Install the ISA ACPI Protocol interface\r | |
217 | //\r | |
218 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
219 | &Controller,\r | |
220 | &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi,\r | |
221 | NULL\r | |
222 | );\r | |
223 | \r | |
224 | Done:\r | |
225 | if (EFI_ERROR (Status)) {\r | |
226 | if (PciIo) {\r | |
227 | PciIo->Attributes (\r | |
228 | PciIo, \r | |
229 | EfiPciIoAttributeOperationDisable, \r | |
230 | EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r | |
231 | NULL \r | |
232 | );\r | |
233 | }\r | |
234 | gBS->CloseProtocol (\r | |
235 | Controller, \r | |
236 | &gEfiPciIoProtocolGuid, \r | |
237 | This->DriverBindingHandle, \r | |
238 | Controller\r | |
239 | );\r | |
240 | if (PcatIsaAcpiDev != NULL) {\r | |
241 | gBS->FreePool (PcatIsaAcpiDev);\r | |
242 | }\r | |
243 | return Status;\r | |
244 | }\r | |
245 | \r | |
246 | return EFI_SUCCESS;\r | |
247 | }\r | |
248 | \r | |
249 | \r | |
250 | /**\r | |
251 | Stop this driver on ControllerHandle. Support stopping any child handles\r | |
252 | created by this driver.\r | |
253 | \r | |
254 | @param This Protocol instance pointer.\r | |
255 | @param ControllerHandle Handle of device to stop driver on\r | |
256 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
257 | children is zero stop the entire bus driver.\r | |
258 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
259 | \r | |
260 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
261 | @retval other This driver was not removed from this device\r | |
262 | \r | |
263 | **/\r | |
264 | EFI_STATUS\r | |
265 | EFIAPI\r | |
266 | PcatIsaAcpiDriverBindingStop (\r | |
267 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
268 | IN EFI_HANDLE Controller,\r | |
269 | IN UINTN NumberOfChildren,\r | |
270 | IN EFI_HANDLE *ChildHandleBuffer\r | |
271 | )\r | |
272 | {\r | |
273 | EFI_STATUS Status;\r | |
274 | EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r | |
275 | PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r | |
276 | \r | |
277 | //\r | |
278 | // Get the ISA ACPI Protocol Interface\r | |
279 | // \r | |
280 | Status = gBS->OpenProtocol (\r | |
281 | Controller, \r | |
282 | &gEfiIsaAcpiProtocolGuid, \r | |
283 | (VOID**)&IsaAcpi,\r | |
284 | This->DriverBindingHandle, \r | |
285 | Controller, \r | |
286 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
287 | );\r | |
288 | if (EFI_ERROR (Status)) {\r | |
289 | return Status;\r | |
290 | }\r | |
291 | \r | |
292 | //\r | |
293 | // Get the PCAT ISA ACPI Device structure from the ISA ACPI Protocol\r | |
294 | //\r | |
295 | PcatIsaAcpiDev = PCAT_ISA_ACPI_DEV_FROM_THIS (IsaAcpi);\r | |
296 | \r | |
297 | PcatIsaAcpiDev->PciIo->Attributes (\r | |
298 | PcatIsaAcpiDev->PciIo, \r | |
299 | EfiPciIoAttributeOperationDisable, \r | |
300 | EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r | |
301 | NULL \r | |
302 | );\r | |
303 | \r | |
304 | //\r | |
305 | // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL\r | |
306 | //\r | |
307 | Status = gBS->UninstallProtocolInterface (\r | |
308 | Controller,\r | |
309 | &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi\r | |
310 | );\r | |
311 | if (EFI_ERROR (Status)) {\r | |
312 | return Status;\r | |
313 | }\r | |
314 | \r | |
315 | gBS->CloseProtocol (\r | |
316 | Controller, \r | |
317 | &gEfiPciIoProtocolGuid, \r | |
318 | This->DriverBindingHandle, \r | |
319 | Controller\r | |
320 | );\r | |
321 | \r | |
322 | gBS->FreePool (PcatIsaAcpiDev);\r | |
323 | \r | |
324 | return EFI_SUCCESS;\r | |
325 | }\r |