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Commit | Line | Data |
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c860b463 | 1 | /** @file\r |
2 | EFI PCAT ISA ACPI Driver for a Generic PC Platform\r | |
c69dd9df | 3 | \r |
5a702acd | 4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
e1d302e5 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
c69dd9df | 6 | \r |
c860b463 | 7 | **/\r |
c69dd9df | 8 | \r |
9 | #include "PcatIsaAcpi.h"\r | |
10 | \r | |
11 | //\r | |
12 | // PcatIsaAcpi Driver Binding Protocol\r | |
13 | //\r | |
14 | EFI_DRIVER_BINDING_PROTOCOL gPcatIsaAcpiDriverBinding = {\r | |
15 | PcatIsaAcpiDriverBindingSupported,\r | |
16 | PcatIsaAcpiDriverBindingStart,\r | |
17 | PcatIsaAcpiDriverBindingStop,\r | |
18 | 0xa,\r | |
19 | NULL,\r | |
20 | NULL\r | |
21 | };\r | |
22 | \r | |
18c97f53 | 23 | /**\r |
24 | the entry point of the PcatIsaAcpi driver.\r | |
25 | \r | |
26 | @param ImageHandle Handle for driver image\r | |
27 | @param SystemTable Point to EFI_SYSTEM_TABLE\r | |
28 | \r | |
619ad10f | 29 | @return Success or not for installing driver binding protocol\r |
18c97f53 | 30 | **/\r |
c69dd9df | 31 | EFI_STATUS\r |
32 | EFIAPI\r | |
33 | PcatIsaAcpiDriverEntryPoint (\r | |
34 | IN EFI_HANDLE ImageHandle,\r | |
35 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
36 | )\r | |
c69dd9df | 37 | {\r |
38 | return EfiLibInstallDriverBindingComponentName2 (\r | |
5a702acd LG |
39 | ImageHandle,\r |
40 | SystemTable,\r | |
c69dd9df | 41 | &gPcatIsaAcpiDriverBinding,\r |
42 | ImageHandle,\r | |
43 | &gPcatIsaAcpiComponentName,\r | |
44 | &gPcatIsaAcpiComponentName2\r | |
45 | );\r | |
46 | }\r | |
47 | \r | |
18c97f53 | 48 | /**\r |
49 | ControllerDriver Protocol Method\r | |
50 | \r | |
5a702acd | 51 | @param This Driver Binding protocol instance pointer.\r |
18c97f53 | 52 | @param Controller Handle of device to test.\r |
53 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
54 | device to start.\r | |
55 | @retval EFI_SUCCESS This driver supports this device.\r | |
56 | @retval other This driver does not support this device.\r | |
57 | \r | |
58 | **/\r | |
c69dd9df | 59 | EFI_STATUS\r |
60 | EFIAPI\r | |
61 | PcatIsaAcpiDriverBindingSupported (\r | |
62 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
63 | IN EFI_HANDLE Controller,\r | |
64 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
65 | )\r | |
c69dd9df | 66 | {\r |
67 | EFI_STATUS Status;\r | |
68 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
69 | PCI_TYPE00 Pci;\r | |
755e4d11 | 70 | UINTN SegmentNumber;\r |
71 | UINTN BusNumber;\r | |
72 | UINTN DeviceNumber;\r | |
73 | UINTN FunctionNumber;\r | |
c69dd9df | 74 | \r |
75 | //\r | |
76 | // Get PciIo protocol instance\r | |
5a702acd | 77 | //\r |
c69dd9df | 78 | Status = gBS->OpenProtocol (\r |
5a702acd LG |
79 | Controller,\r |
80 | &gEfiPciIoProtocolGuid,\r | |
9c83c97a | 81 | (VOID**)&PciIo,\r |
c69dd9df | 82 | This->DriverBindingHandle,\r |
83 | Controller,\r | |
84 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
85 | );\r | |
86 | if (EFI_ERROR(Status)) {\r | |
87 | return Status;\r | |
88 | }\r | |
89 | \r | |
90 | Status = PciIo->Pci.Read (\r | |
91 | PciIo,\r | |
92 | EfiPciIoWidthUint32,\r | |
93 | 0,\r | |
5a702acd | 94 | sizeof(Pci) / sizeof(UINT32),\r |
c69dd9df | 95 | &Pci);\r |
c860b463 | 96 | \r |
c69dd9df | 97 | if (!EFI_ERROR (Status)) {\r |
98 | Status = EFI_UNSUPPORTED;\r | |
99 | if ((Pci.Hdr.Command & 0x03) == 0x03) {\r | |
100 | if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {\r | |
101 | //\r | |
102 | // See if this is a standard PCI to ISA Bridge from the Base Code and Class Code\r | |
103 | //\r | |
bc14bdb3 | 104 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {\r |
c69dd9df | 105 | Status = EFI_SUCCESS;\r |
5a702acd | 106 | }\r |
c69dd9df | 107 | \r |
108 | //\r | |
109 | // See if this is an Intel PCI to ISA bridge in Positive Decode Mode\r | |
110 | //\r | |
5a702acd | 111 | if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&\r |
755e4d11 | 112 | Pci.Hdr.VendorId == 0x8086 ) {\r |
113 | //\r | |
5a702acd LG |
114 | // See if this is on Function #0 to avoid false positives on\r |
115 | // PCI_CLASS_BRIDGE_OTHER that has the same value as\r | |
755e4d11 | 116 | // PCI_CLASS_BRIDGE_ISA_PDECODE\r |
117 | //\r | |
118 | Status = PciIo->GetLocation (\r | |
5a702acd LG |
119 | PciIo,\r |
120 | &SegmentNumber,\r | |
121 | &BusNumber,\r | |
122 | &DeviceNumber,\r | |
755e4d11 | 123 | &FunctionNumber\r |
124 | );\r | |
125 | if (!EFI_ERROR (Status) && FunctionNumber == 0) {\r | |
126 | Status = EFI_SUCCESS;\r | |
127 | } else {\r | |
128 | Status = EFI_UNSUPPORTED;\r | |
129 | }\r | |
c69dd9df | 130 | }\r |
5a702acd | 131 | }\r |
c69dd9df | 132 | }\r |
133 | }\r | |
134 | \r | |
135 | gBS->CloseProtocol (\r | |
5a702acd LG |
136 | Controller,\r |
137 | &gEfiPciIoProtocolGuid,\r | |
138 | This->DriverBindingHandle,\r | |
139 | Controller\r | |
c69dd9df | 140 | );\r |
5a702acd | 141 | \r |
c69dd9df | 142 | return Status;\r |
143 | }\r | |
144 | \r | |
18c97f53 | 145 | /**\r |
146 | Install EFI_ISA_ACPI_PROTOCOL.\r | |
147 | \r | |
148 | @param This Driver Binding protocol instance pointer.\r | |
149 | @param ControllerHandle Handle of device to bind driver to.\r | |
150 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
151 | device to start.\r | |
152 | \r | |
153 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
154 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
155 | @retval other This driver does not support this device\r | |
156 | **/\r | |
c69dd9df | 157 | EFI_STATUS\r |
158 | EFIAPI\r | |
159 | PcatIsaAcpiDriverBindingStart (\r | |
160 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
161 | IN EFI_HANDLE Controller,\r | |
162 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
163 | )\r | |
c69dd9df | 164 | {\r |
165 | EFI_STATUS Status;\r | |
166 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
167 | PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r | |
e0ee9d93 | 168 | UINT64 Supports;\r |
cb68247d | 169 | UINT64 OriginalAttributes;\r |
e0ee9d93 | 170 | BOOLEAN Enabled;\r |
171 | \r | |
172 | Enabled = FALSE;\r | |
173 | Supports = 0;\r | |
c69dd9df | 174 | PcatIsaAcpiDev = NULL;\r |
2d3a626e | 175 | OriginalAttributes = 0;\r |
c69dd9df | 176 | //\r |
177 | // Open the PCI I/O Protocol Interface\r | |
178 | //\r | |
179 | PciIo = NULL;\r | |
180 | Status = gBS->OpenProtocol (\r | |
5a702acd LG |
181 | Controller,\r |
182 | &gEfiPciIoProtocolGuid,\r | |
9c83c97a | 183 | (VOID**)&PciIo,\r |
5a702acd LG |
184 | This->DriverBindingHandle,\r |
185 | Controller,\r | |
186 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
c69dd9df | 187 | );\r |
188 | if (EFI_ERROR (Status)) {\r | |
189 | goto Done;\r | |
190 | }\r | |
191 | \r | |
e0ee9d93 | 192 | //\r |
193 | // Get supported PCI attributes\r | |
194 | //\r | |
195 | Status = PciIo->Attributes (\r | |
196 | PciIo,\r | |
197 | EfiPciIoAttributeOperationSupported,\r | |
198 | 0,\r | |
199 | &Supports\r | |
200 | );\r | |
201 | if (EFI_ERROR (Status)) {\r | |
202 | goto Done;\r | |
203 | }\r | |
204 | \r | |
df6bd1b6 | 205 | Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16);\r |
e0ee9d93 | 206 | if (Supports == 0 || Supports == (EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_IO_16)) {\r |
207 | Status = EFI_UNSUPPORTED;\r | |
208 | goto Done;\r | |
cb68247d RN |
209 | }\r |
210 | \r | |
211 | Status = PciIo->Attributes (\r | |
212 | PciIo,\r | |
213 | EfiPciIoAttributeOperationGet,\r | |
214 | 0,\r | |
215 | &OriginalAttributes\r | |
216 | );\r | |
217 | if (EFI_ERROR (Status)) {\r | |
218 | goto Done;\r | |
219 | }\r | |
e0ee9d93 | 220 | \r |
c69dd9df | 221 | Status = PciIo->Attributes (\r |
5a702acd LG |
222 | PciIo,\r |
223 | EfiPciIoAttributeOperationEnable,\r | |
224 | EFI_PCI_DEVICE_ENABLE | Supports | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r | |
225 | NULL\r | |
c69dd9df | 226 | );\r |
227 | if (EFI_ERROR (Status)) {\r | |
228 | goto Done;\r | |
229 | }\r | |
cb68247d RN |
230 | \r |
231 | Enabled = TRUE;\r | |
c69dd9df | 232 | //\r |
233 | // Allocate memory for the PCAT ISA ACPI Device structure\r | |
234 | //\r | |
235 | PcatIsaAcpiDev = NULL;\r | |
236 | Status = gBS->AllocatePool (\r | |
237 | EfiBootServicesData,\r | |
238 | sizeof(PCAT_ISA_ACPI_DEV),\r | |
9c83c97a | 239 | (VOID**)&PcatIsaAcpiDev\r |
c69dd9df | 240 | );\r |
241 | if (EFI_ERROR (Status)) {\r | |
242 | goto Done;\r | |
243 | }\r | |
244 | \r | |
245 | //\r | |
246 | // Initialize the PCAT ISA ACPI Device structure\r | |
247 | //\r | |
cb68247d RN |
248 | PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;\r |
249 | PcatIsaAcpiDev->Handle = Controller;\r | |
250 | PcatIsaAcpiDev->PciIo = PciIo;\r | |
251 | PcatIsaAcpiDev->OriginalAttributes = OriginalAttributes;\r | |
e8bce4b4 RN |
252 | \r |
253 | //\r | |
254 | // Initialize PcatIsaAcpiDeviceList\r | |
255 | //\r | |
256 | InitializePcatIsaAcpiDeviceList ();\r | |
5a702acd | 257 | \r |
c69dd9df | 258 | //\r |
259 | // IsaAcpi interface\r | |
260 | //\r | |
261 | (PcatIsaAcpiDev->IsaAcpi).DeviceEnumerate = IsaDeviceEnumerate;\r | |
262 | (PcatIsaAcpiDev->IsaAcpi).SetPower = IsaDeviceSetPower;\r | |
263 | (PcatIsaAcpiDev->IsaAcpi).GetCurResource = IsaGetCurrentResource;\r | |
264 | (PcatIsaAcpiDev->IsaAcpi).GetPosResource = IsaGetPossibleResource;\r | |
265 | (PcatIsaAcpiDev->IsaAcpi).SetResource = IsaSetResource;\r | |
266 | (PcatIsaAcpiDev->IsaAcpi).EnableDevice = IsaEnableDevice;\r | |
267 | (PcatIsaAcpiDev->IsaAcpi).InitDevice = IsaInitDevice;\r | |
268 | (PcatIsaAcpiDev->IsaAcpi).InterfaceInit = IsaInterfaceInit;\r | |
5a702acd | 269 | \r |
c69dd9df | 270 | //\r |
271 | // Install the ISA ACPI Protocol interface\r | |
272 | //\r | |
273 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
274 | &Controller,\r | |
275 | &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi,\r | |
276 | NULL\r | |
277 | );\r | |
278 | \r | |
279 | Done:\r | |
280 | if (EFI_ERROR (Status)) {\r | |
e0ee9d93 | 281 | if (PciIo != NULL && Enabled) {\r |
c69dd9df | 282 | PciIo->Attributes (\r |
5a702acd | 283 | PciIo,\r |
cb68247d RN |
284 | EfiPciIoAttributeOperationSet,\r |
285 | OriginalAttributes,\r | |
5a702acd | 286 | NULL\r |
c69dd9df | 287 | );\r |
288 | }\r | |
289 | gBS->CloseProtocol (\r | |
5a702acd LG |
290 | Controller,\r |
291 | &gEfiPciIoProtocolGuid,\r | |
292 | This->DriverBindingHandle,\r | |
c69dd9df | 293 | Controller\r |
294 | );\r | |
295 | if (PcatIsaAcpiDev != NULL) {\r | |
296 | gBS->FreePool (PcatIsaAcpiDev);\r | |
297 | }\r | |
298 | return Status;\r | |
299 | }\r | |
5a702acd | 300 | \r |
c69dd9df | 301 | return EFI_SUCCESS;\r |
302 | }\r | |
303 | \r | |
18c97f53 | 304 | \r |
305 | /**\r | |
306 | Stop this driver on ControllerHandle. Support stopping any child handles\r | |
307 | created by this driver.\r | |
308 | \r | |
309 | @param This Protocol instance pointer.\r | |
310 | @param ControllerHandle Handle of device to stop driver on\r | |
311 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
312 | children is zero stop the entire bus driver.\r | |
313 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
314 | \r | |
315 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
316 | @retval other This driver was not removed from this device\r | |
317 | \r | |
318 | **/\r | |
c69dd9df | 319 | EFI_STATUS\r |
320 | EFIAPI\r | |
321 | PcatIsaAcpiDriverBindingStop (\r | |
322 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
323 | IN EFI_HANDLE Controller,\r | |
324 | IN UINTN NumberOfChildren,\r | |
325 | IN EFI_HANDLE *ChildHandleBuffer\r | |
326 | )\r | |
c69dd9df | 327 | {\r |
328 | EFI_STATUS Status;\r | |
329 | EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r | |
330 | PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r | |
5a702acd | 331 | \r |
c69dd9df | 332 | //\r |
333 | // Get the ISA ACPI Protocol Interface\r | |
5a702acd | 334 | //\r |
c69dd9df | 335 | Status = gBS->OpenProtocol (\r |
5a702acd LG |
336 | Controller,\r |
337 | &gEfiIsaAcpiProtocolGuid,\r | |
9c83c97a | 338 | (VOID**)&IsaAcpi,\r |
5a702acd LG |
339 | This->DriverBindingHandle,\r |
340 | Controller,\r | |
c69dd9df | 341 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
342 | );\r | |
343 | if (EFI_ERROR (Status)) {\r | |
344 | return Status;\r | |
345 | }\r | |
346 | \r | |
347 | //\r | |
348 | // Get the PCAT ISA ACPI Device structure from the ISA ACPI Protocol\r | |
349 | //\r | |
350 | PcatIsaAcpiDev = PCAT_ISA_ACPI_DEV_FROM_THIS (IsaAcpi);\r | |
351 | \r | |
e0ee9d93 | 352 | //\r |
cb68247d | 353 | // Restore PCI attributes\r |
e0ee9d93 | 354 | //\r |
355 | Status = PcatIsaAcpiDev->PciIo->Attributes (\r | |
356 | PcatIsaAcpiDev->PciIo,\r | |
cb68247d RN |
357 | EfiPciIoAttributeOperationSet,\r |
358 | PcatIsaAcpiDev->OriginalAttributes,\r | |
359 | NULL\r | |
e0ee9d93 | 360 | );\r |
361 | if (EFI_ERROR (Status)) {\r | |
362 | return Status;\r | |
363 | }\r | |
364 | \r | |
c69dd9df | 365 | //\r |
366 | // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL\r | |
367 | //\r | |
368 | Status = gBS->UninstallProtocolInterface (\r | |
369 | Controller,\r | |
370 | &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi\r | |
371 | );\r | |
372 | if (EFI_ERROR (Status)) {\r | |
373 | return Status;\r | |
374 | }\r | |
375 | \r | |
376 | gBS->CloseProtocol (\r | |
5a702acd LG |
377 | Controller,\r |
378 | &gEfiPciIoProtocolGuid,\r | |
379 | This->DriverBindingHandle,\r | |
c69dd9df | 380 | Controller\r |
381 | );\r | |
5a702acd | 382 | \r |
c69dd9df | 383 | gBS->FreePool (PcatIsaAcpiDev);\r |
5a702acd | 384 | \r |
c69dd9df | 385 | return EFI_SUCCESS;\r |
386 | }\r |