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9060e3ec | 1 | /** @file\r |
fcdfcdbf | 2 | Supporting functions implementation for PCI devices management.\r |
9060e3ec | 3 | \r |
1f6785c4 | 4 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r |
07eba706 | 5 | (C) Copyright 2018 Hewlett Packard Enterprise Development LP<BR>\r |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
9060e3ec | 7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "PciBus.h"\r | |
11 | \r | |
12 | //\r | |
13 | // This device structure is serviced as a header.\r | |
14 | // Its next field points to the first root bridge device node.\r | |
15 | //\r | |
16 | LIST_ENTRY mPciDevicePool;\r | |
17 | \r | |
18 | /**\r | |
19 | Initialize the PCI devices pool.\r | |
20 | \r | |
21 | **/\r | |
22 | VOID\r | |
23 | InitializePciDevicePool (\r | |
24 | VOID\r | |
25 | )\r | |
26 | {\r | |
27 | InitializeListHead (&mPciDevicePool);\r | |
28 | }\r | |
29 | \r | |
30 | /**\r | |
31 | Insert a root bridge into PCI device pool.\r | |
32 | \r | |
33 | @param RootBridge A pointer to the PCI_IO_DEVICE.\r | |
34 | \r | |
35 | **/\r | |
36 | VOID\r | |
37 | InsertRootBridge (\r | |
1436aea4 | 38 | IN PCI_IO_DEVICE *RootBridge\r |
9060e3ec | 39 | )\r |
40 | {\r | |
41 | InsertTailList (&mPciDevicePool, &(RootBridge->Link));\r | |
42 | }\r | |
43 | \r | |
44 | /**\r | |
45 | This function is used to insert a PCI device node under\r | |
46 | a bridge.\r | |
47 | \r | |
48 | @param Bridge The PCI bridge.\r | |
49 | @param PciDeviceNode The PCI device needs inserting.\r | |
50 | \r | |
51 | **/\r | |
52 | VOID\r | |
53 | InsertPciDevice (\r | |
1436aea4 MK |
54 | IN PCI_IO_DEVICE *Bridge,\r |
55 | IN PCI_IO_DEVICE *PciDeviceNode\r | |
9060e3ec | 56 | )\r |
57 | {\r | |
58 | InsertTailList (&Bridge->ChildList, &(PciDeviceNode->Link));\r | |
59 | PciDeviceNode->Parent = Bridge;\r | |
60 | }\r | |
61 | \r | |
62 | /**\r | |
fcdfcdbf | 63 | Destroy root bridge and remove it from device tree.\r |
9060e3ec | 64 | \r |
65 | @param RootBridge The bridge want to be removed.\r | |
66 | \r | |
67 | **/\r | |
68 | VOID\r | |
69 | DestroyRootBridge (\r | |
1436aea4 | 70 | IN PCI_IO_DEVICE *RootBridge\r |
9060e3ec | 71 | )\r |
72 | {\r | |
73 | DestroyPciDeviceTree (RootBridge);\r | |
74 | \r | |
75 | FreePciDevice (RootBridge);\r | |
76 | }\r | |
77 | \r | |
78 | /**\r | |
79 | Destroy a pci device node.\r | |
80 | \r | |
81 | All direct or indirect allocated resource for this node will be freed.\r | |
82 | \r | |
fcdfcdbf | 83 | @param PciIoDevice A pointer to the PCI_IO_DEVICE to be destroyed.\r |
9060e3ec | 84 | \r |
85 | **/\r | |
86 | VOID\r | |
87 | FreePciDevice (\r | |
1436aea4 | 88 | IN PCI_IO_DEVICE *PciIoDevice\r |
9060e3ec | 89 | )\r |
90 | {\r | |
91 | ASSERT (PciIoDevice != NULL);\r | |
92 | //\r | |
93 | // Assume all children have been removed underneath this device\r | |
94 | //\r | |
95 | if (PciIoDevice->ResourcePaddingDescriptors != NULL) {\r | |
96 | FreePool (PciIoDevice->ResourcePaddingDescriptors);\r | |
97 | }\r | |
98 | \r | |
99 | if (PciIoDevice->DevicePath != NULL) {\r | |
100 | FreePool (PciIoDevice->DevicePath);\r | |
101 | }\r | |
102 | \r | |
07eba706 TP |
103 | if (PciIoDevice->BusNumberRanges != NULL) {\r |
104 | FreePool (PciIoDevice->BusNumberRanges);\r | |
105 | }\r | |
106 | \r | |
9060e3ec | 107 | FreePool (PciIoDevice);\r |
108 | }\r | |
109 | \r | |
110 | /**\r | |
111 | Destroy all the pci device node under the bridge.\r | |
112 | Bridge itself is not included.\r | |
113 | \r | |
114 | @param Bridge A pointer to the PCI_IO_DEVICE.\r | |
115 | \r | |
116 | **/\r | |
117 | VOID\r | |
118 | DestroyPciDeviceTree (\r | |
1436aea4 | 119 | IN PCI_IO_DEVICE *Bridge\r |
9060e3ec | 120 | )\r |
121 | {\r | |
1436aea4 MK |
122 | LIST_ENTRY *CurrentLink;\r |
123 | PCI_IO_DEVICE *Temp;\r | |
9060e3ec | 124 | \r |
125 | while (!IsListEmpty (&Bridge->ChildList)) {\r | |
9060e3ec | 126 | CurrentLink = Bridge->ChildList.ForwardLink;\r |
127 | \r | |
128 | //\r | |
129 | // Remove this node from the linked list\r | |
130 | //\r | |
131 | RemoveEntryList (CurrentLink);\r | |
132 | \r | |
133 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
134 | \r | |
135 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
136 | DestroyPciDeviceTree (Temp);\r | |
137 | }\r | |
138 | \r | |
139 | FreePciDevice (Temp);\r | |
140 | }\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Destroy all device nodes under the root bridge\r | |
145 | specified by Controller.\r | |
146 | \r | |
147 | The root bridge itself is also included.\r | |
148 | \r | |
149 | @param Controller Root bridge handle.\r | |
150 | \r | |
fcdfcdbf | 151 | @retval EFI_SUCCESS Destroy all device nodes successfully.\r |
9060e3ec | 152 | @retval EFI_NOT_FOUND Cannot find any PCI device under specified\r |
153 | root bridge.\r | |
154 | \r | |
155 | **/\r | |
156 | EFI_STATUS\r | |
157 | DestroyRootBridgeByHandle (\r | |
1436aea4 | 158 | IN EFI_HANDLE Controller\r |
9060e3ec | 159 | )\r |
160 | {\r | |
1436aea4 MK |
161 | LIST_ENTRY *CurrentLink;\r |
162 | PCI_IO_DEVICE *Temp;\r | |
9060e3ec | 163 | \r |
164 | CurrentLink = mPciDevicePool.ForwardLink;\r | |
165 | \r | |
166 | while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {\r | |
167 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
168 | \r | |
169 | if (Temp->Handle == Controller) {\r | |
9060e3ec | 170 | RemoveEntryList (CurrentLink);\r |
171 | \r | |
172 | DestroyPciDeviceTree (Temp);\r | |
173 | \r | |
174 | FreePciDevice (Temp);\r | |
175 | \r | |
176 | return EFI_SUCCESS;\r | |
177 | }\r | |
178 | \r | |
179 | CurrentLink = CurrentLink->ForwardLink;\r | |
180 | }\r | |
181 | \r | |
182 | return EFI_NOT_FOUND;\r | |
183 | }\r | |
184 | \r | |
185 | /**\r | |
186 | This function registers the PCI IO device.\r | |
187 | \r | |
188 | It creates a handle for this PCI IO device (if the handle does not exist), attaches\r | |
189 | appropriate protocols onto the handle, does necessary initialization, and sets up\r | |
190 | parent/child relationship with its bus controller.\r | |
191 | \r | |
192 | @param Controller An EFI handle for the PCI bus controller.\r | |
193 | @param PciIoDevice A PCI_IO_DEVICE pointer to the PCI IO device to be registered.\r | |
194 | @param Handle A pointer to hold the returned EFI handle for the PCI IO device.\r | |
195 | \r | |
196 | @retval EFI_SUCCESS The PCI device is successfully registered.\r | |
197 | @retval other An error occurred when registering the PCI device.\r | |
198 | \r | |
199 | **/\r | |
200 | EFI_STATUS\r | |
201 | RegisterPciDevice (\r | |
1436aea4 MK |
202 | IN EFI_HANDLE Controller,\r |
203 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
204 | OUT EFI_HANDLE *Handle OPTIONAL\r | |
9060e3ec | 205 | )\r |
206 | {\r | |
1436aea4 MK |
207 | EFI_STATUS Status;\r |
208 | VOID *PlatformOpRomBuffer;\r | |
209 | UINTN PlatformOpRomSize;\r | |
210 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
211 | UINT8 Data8;\r | |
212 | BOOLEAN HasEfiImage;\r | |
9060e3ec | 213 | \r |
214 | //\r | |
215 | // Install the pciio protocol, device path protocol\r | |
216 | //\r | |
217 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
218 | &PciIoDevice->Handle,\r | |
219 | &gEfiDevicePathProtocolGuid,\r | |
220 | PciIoDevice->DevicePath,\r | |
221 | &gEfiPciIoProtocolGuid,\r | |
222 | &PciIoDevice->PciIo,\r | |
223 | NULL\r | |
224 | );\r | |
225 | if (EFI_ERROR (Status)) {\r | |
226 | return Status;\r | |
227 | }\r | |
228 | \r | |
9060e3ec | 229 | //\r |
230 | // Force Interrupt line to "Unknown" or "No Connection"\r | |
231 | //\r | |
232 | PciIo = &(PciIoDevice->PciIo);\r | |
233 | Data8 = PCI_INT_LINE_UNKNOWN;\r | |
234 | PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, 0x3C, 1, &Data8);\r | |
d1102dba | 235 | \r |
9060e3ec | 236 | //\r |
237 | // Process OpRom\r | |
238 | //\r | |
239 | if (!PciIoDevice->AllOpRomProcessed) {\r | |
9060e3ec | 240 | //\r |
241 | // Get the OpRom provided by platform\r | |
242 | //\r | |
243 | if (gPciPlatformProtocol != NULL) {\r | |
244 | Status = gPciPlatformProtocol->GetPciRom (\r | |
245 | gPciPlatformProtocol,\r | |
246 | PciIoDevice->Handle,\r | |
247 | &PlatformOpRomBuffer,\r | |
248 | &PlatformOpRomSize\r | |
249 | );\r | |
250 | if (!EFI_ERROR (Status)) {\r | |
4ed4e19c | 251 | PciIoDevice->EmbeddedRom = FALSE;\r |
1436aea4 | 252 | PciIoDevice->RomSize = (UINT32)PlatformOpRomSize;\r |
9060e3ec | 253 | PciIoDevice->PciIo.RomSize = PlatformOpRomSize;\r |
254 | PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;\r | |
255 | //\r | |
256 | // For OpROM read from gPciPlatformProtocol:\r | |
257 | // Add the Rom Image to internal database for later PCI light enumeration\r | |
258 | //\r | |
259 | PciRomAddImageMapping (\r | |
260 | NULL,\r | |
261 | PciIoDevice->PciRootBridgeIo->SegmentNumber,\r | |
262 | PciIoDevice->BusNumber,\r | |
263 | PciIoDevice->DeviceNumber,\r | |
264 | PciIoDevice->FunctionNumber,\r | |
221c8fd5 | 265 | PciIoDevice->PciIo.RomImage,\r |
9060e3ec | 266 | PciIoDevice->PciIo.RomSize\r |
267 | );\r | |
268 | }\r | |
269 | } else if (gPciOverrideProtocol != NULL) {\r | |
270 | Status = gPciOverrideProtocol->GetPciRom (\r | |
271 | gPciOverrideProtocol,\r | |
272 | PciIoDevice->Handle,\r | |
273 | &PlatformOpRomBuffer,\r | |
274 | &PlatformOpRomSize\r | |
275 | );\r | |
276 | if (!EFI_ERROR (Status)) {\r | |
4ed4e19c | 277 | PciIoDevice->EmbeddedRom = FALSE;\r |
1436aea4 | 278 | PciIoDevice->RomSize = (UINT32)PlatformOpRomSize;\r |
9060e3ec | 279 | PciIoDevice->PciIo.RomSize = PlatformOpRomSize;\r |
280 | PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;\r | |
281 | //\r | |
282 | // For OpROM read from gPciOverrideProtocol:\r | |
283 | // Add the Rom Image to internal database for later PCI light enumeration\r | |
284 | //\r | |
285 | PciRomAddImageMapping (\r | |
286 | NULL,\r | |
287 | PciIoDevice->PciRootBridgeIo->SegmentNumber,\r | |
288 | PciIoDevice->BusNumber,\r | |
289 | PciIoDevice->DeviceNumber,\r | |
290 | PciIoDevice->FunctionNumber,\r | |
221c8fd5 | 291 | PciIoDevice->PciIo.RomImage,\r |
9060e3ec | 292 | PciIoDevice->PciIo.RomSize\r |
293 | );\r | |
d1102dba | 294 | }\r |
9060e3ec | 295 | }\r |
296 | }\r | |
297 | \r | |
483d0d85 RN |
298 | //\r |
299 | // Determine if there are EFI images in the option rom\r | |
300 | //\r | |
301 | HasEfiImage = ContainEfiImage (PciIoDevice->PciIo.RomImage, PciIoDevice->PciIo.RomSize);\r | |
302 | \r | |
303 | if (HasEfiImage) {\r | |
9060e3ec | 304 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
305 | &PciIoDevice->Handle,\r | |
306 | &gEfiLoadFile2ProtocolGuid,\r | |
307 | &PciIoDevice->LoadFile2,\r | |
308 | NULL\r | |
309 | );\r | |
310 | if (EFI_ERROR (Status)) {\r | |
311 | gBS->UninstallMultipleProtocolInterfaces (\r | |
9388c6b1 | 312 | PciIoDevice->Handle,\r |
9060e3ec | 313 | &gEfiDevicePathProtocolGuid,\r |
314 | PciIoDevice->DevicePath,\r | |
315 | &gEfiPciIoProtocolGuid,\r | |
316 | &PciIoDevice->PciIo,\r | |
317 | NULL\r | |
318 | );\r | |
319 | return Status;\r | |
320 | }\r | |
321 | }\r | |
322 | \r | |
9060e3ec | 323 | if (!PciIoDevice->AllOpRomProcessed) {\r |
9060e3ec | 324 | PciIoDevice->AllOpRomProcessed = TRUE;\r |
325 | \r | |
326 | //\r | |
327 | // Dispatch the EFI OpRom for the PCI device.\r | |
328 | // The OpRom is got from platform in the above code\r | |
329 | // or loaded from device in the previous round of bus enumeration\r | |
330 | //\r | |
483d0d85 | 331 | if (HasEfiImage) {\r |
9060e3ec | 332 | ProcessOpRomImage (PciIoDevice);\r |
333 | }\r | |
334 | }\r | |
335 | \r | |
336 | if (PciIoDevice->BusOverride) {\r | |
337 | //\r | |
338 | // Install Bus Specific Driver Override Protocol\r | |
339 | //\r | |
340 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
341 | &PciIoDevice->Handle,\r | |
342 | &gEfiBusSpecificDriverOverrideProtocolGuid,\r | |
343 | &PciIoDevice->PciDriverOverride,\r | |
344 | NULL\r | |
345 | );\r | |
346 | if (EFI_ERROR (Status)) {\r | |
347 | gBS->UninstallMultipleProtocolInterfaces (\r | |
9388c6b1 | 348 | PciIoDevice->Handle,\r |
9060e3ec | 349 | &gEfiDevicePathProtocolGuid,\r |
350 | PciIoDevice->DevicePath,\r | |
351 | &gEfiPciIoProtocolGuid,\r | |
352 | &PciIoDevice->PciIo,\r | |
353 | NULL\r | |
354 | );\r | |
483d0d85 | 355 | if (HasEfiImage) {\r |
9060e3ec | 356 | gBS->UninstallMultipleProtocolInterfaces (\r |
9388c6b1 | 357 | PciIoDevice->Handle,\r |
9060e3ec | 358 | &gEfiLoadFile2ProtocolGuid,\r |
359 | &PciIoDevice->LoadFile2,\r | |
360 | NULL\r | |
361 | );\r | |
362 | }\r | |
363 | \r | |
364 | return Status;\r | |
365 | }\r | |
366 | }\r | |
367 | \r | |
368 | Status = gBS->OpenProtocol (\r | |
369 | Controller,\r | |
370 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
1436aea4 | 371 | (VOID **)&(PciIoDevice->PciRootBridgeIo),\r |
9060e3ec | 372 | gPciBusDriverBinding.DriverBindingHandle,\r |
373 | PciIoDevice->Handle,\r | |
374 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
375 | );\r | |
376 | if (EFI_ERROR (Status)) {\r | |
377 | return Status;\r | |
378 | }\r | |
379 | \r | |
380 | if (Handle != NULL) {\r | |
381 | *Handle = PciIoDevice->Handle;\r | |
382 | }\r | |
383 | \r | |
384 | //\r | |
385 | // Indicate the pci device is registered\r | |
386 | //\r | |
387 | PciIoDevice->Registered = TRUE;\r | |
388 | \r | |
389 | return EFI_SUCCESS;\r | |
390 | }\r | |
391 | \r | |
392 | /**\r | |
393 | This function is used to remove the whole PCI devices on the specified bridge from\r | |
394 | the root bridge.\r | |
395 | \r | |
396 | @param RootBridgeHandle The root bridge device handle.\r | |
397 | @param Bridge The bridge device to be removed.\r | |
398 | \r | |
399 | **/\r | |
400 | VOID\r | |
401 | RemoveAllPciDeviceOnBridge (\r | |
1436aea4 MK |
402 | EFI_HANDLE RootBridgeHandle,\r |
403 | PCI_IO_DEVICE *Bridge\r | |
9060e3ec | 404 | )\r |
405 | {\r | |
1436aea4 MK |
406 | LIST_ENTRY *CurrentLink;\r |
407 | PCI_IO_DEVICE *Temp;\r | |
9060e3ec | 408 | \r |
409 | while (!IsListEmpty (&Bridge->ChildList)) {\r | |
9060e3ec | 410 | CurrentLink = Bridge->ChildList.ForwardLink;\r |
411 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
412 | \r | |
413 | //\r | |
414 | // Check if the current node has been deregistered before\r | |
415 | // If it is not, then deregister it\r | |
416 | //\r | |
417 | if (Temp->Registered) {\r | |
418 | DeRegisterPciDevice (RootBridgeHandle, Temp->Handle);\r | |
419 | }\r | |
420 | \r | |
421 | //\r | |
422 | // Remove this node from the linked list\r | |
423 | //\r | |
424 | RemoveEntryList (CurrentLink);\r | |
425 | \r | |
426 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
427 | RemoveAllPciDeviceOnBridge (RootBridgeHandle, Temp);\r | |
428 | }\r | |
429 | \r | |
430 | FreePciDevice (Temp);\r | |
431 | }\r | |
432 | }\r | |
433 | \r | |
434 | /**\r | |
435 | This function is used to de-register the PCI IO device.\r | |
436 | \r | |
437 | That includes un-installing PciIo protocol from the specified PCI\r | |
438 | device handle.\r | |
439 | \r | |
440 | @param Controller An EFI handle for the PCI bus controller.\r | |
441 | @param Handle PCI device handle.\r | |
442 | \r | |
443 | @retval EFI_SUCCESS The PCI device is successfully de-registered.\r | |
444 | @retval other An error occurred when de-registering the PCI device.\r | |
445 | \r | |
446 | **/\r | |
447 | EFI_STATUS\r | |
448 | DeRegisterPciDevice (\r | |
1436aea4 MK |
449 | IN EFI_HANDLE Controller,\r |
450 | IN EFI_HANDLE Handle\r | |
9060e3ec | 451 | )\r |
452 | \r | |
453 | {\r | |
1436aea4 MK |
454 | EFI_PCI_IO_PROTOCOL *PciIo;\r |
455 | EFI_STATUS Status;\r | |
456 | PCI_IO_DEVICE *PciIoDevice;\r | |
457 | PCI_IO_DEVICE *Node;\r | |
458 | LIST_ENTRY *CurrentLink;\r | |
459 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
9060e3ec | 460 | \r |
461 | Status = gBS->OpenProtocol (\r | |
462 | Handle,\r | |
463 | &gEfiPciIoProtocolGuid,\r | |
1436aea4 | 464 | (VOID **)&PciIo,\r |
9060e3ec | 465 | gPciBusDriverBinding.DriverBindingHandle,\r |
466 | Controller,\r | |
467 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
468 | );\r | |
469 | if (!EFI_ERROR (Status)) {\r | |
470 | PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (PciIo);\r | |
471 | \r | |
472 | //\r | |
473 | // If it is already de-registered\r | |
474 | //\r | |
475 | if (!PciIoDevice->Registered) {\r | |
476 | return EFI_SUCCESS;\r | |
477 | }\r | |
478 | \r | |
479 | //\r | |
480 | // If it is PPB, first de-register its children\r | |
481 | //\r | |
482 | \r | |
483 | if (!IsListEmpty (&PciIoDevice->ChildList)) {\r | |
9060e3ec | 484 | CurrentLink = PciIoDevice->ChildList.ForwardLink;\r |
485 | \r | |
486 | while (CurrentLink != NULL && CurrentLink != &PciIoDevice->ChildList) {\r | |
1436aea4 MK |
487 | Node = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
488 | Status = DeRegisterPciDevice (Controller, Node->Handle);\r | |
9060e3ec | 489 | \r |
490 | if (EFI_ERROR (Status)) {\r | |
491 | return Status;\r | |
492 | }\r | |
493 | \r | |
494 | CurrentLink = CurrentLink->ForwardLink;\r | |
495 | }\r | |
496 | }\r | |
497 | \r | |
498 | //\r | |
499 | // Close the child handle\r | |
500 | //\r | |
501 | Status = gBS->CloseProtocol (\r | |
502 | Controller,\r | |
503 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
504 | gPciBusDriverBinding.DriverBindingHandle,\r | |
505 | Handle\r | |
506 | );\r | |
507 | \r | |
508 | //\r | |
509 | // Un-install the Device Path protocol and PCI I/O protocol\r | |
510 | // and Bus Specific Driver Override protocol if needed.\r | |
511 | //\r | |
512 | if (PciIoDevice->BusOverride) {\r | |
513 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
514 | Handle,\r | |
515 | &gEfiDevicePathProtocolGuid,\r | |
516 | PciIoDevice->DevicePath,\r | |
517 | &gEfiPciIoProtocolGuid,\r | |
518 | &PciIoDevice->PciIo,\r | |
519 | &gEfiBusSpecificDriverOverrideProtocolGuid,\r | |
520 | &PciIoDevice->PciDriverOverride,\r | |
521 | NULL\r | |
522 | );\r | |
523 | } else {\r | |
524 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
525 | Handle,\r | |
526 | &gEfiDevicePathProtocolGuid,\r | |
527 | PciIoDevice->DevicePath,\r | |
528 | &gEfiPciIoProtocolGuid,\r | |
529 | &PciIoDevice->PciIo,\r | |
530 | NULL\r | |
531 | );\r | |
532 | }\r | |
533 | \r | |
534 | if (!EFI_ERROR (Status)) {\r | |
535 | //\r | |
536 | // Try to uninstall LoadFile2 protocol if exists\r | |
537 | //\r | |
538 | Status = gBS->OpenProtocol (\r | |
539 | Handle,\r | |
540 | &gEfiLoadFile2ProtocolGuid,\r | |
541 | NULL,\r | |
542 | gPciBusDriverBinding.DriverBindingHandle,\r | |
543 | Controller,\r | |
544 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
545 | );\r | |
546 | if (!EFI_ERROR (Status)) {\r | |
547 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
548 | Handle,\r | |
549 | &gEfiLoadFile2ProtocolGuid,\r | |
550 | &PciIoDevice->LoadFile2,\r | |
551 | NULL\r | |
552 | );\r | |
553 | }\r | |
1436aea4 | 554 | \r |
9060e3ec | 555 | //\r |
556 | // Restore Status\r | |
557 | //\r | |
558 | Status = EFI_SUCCESS;\r | |
559 | }\r | |
560 | \r | |
9060e3ec | 561 | if (EFI_ERROR (Status)) {\r |
562 | gBS->OpenProtocol (\r | |
1436aea4 MK |
563 | Controller,\r |
564 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
565 | (VOID **)&PciRootBridgeIo,\r | |
566 | gPciBusDriverBinding.DriverBindingHandle,\r | |
567 | Handle,\r | |
568 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
569 | );\r | |
9060e3ec | 570 | return Status;\r |
571 | }\r | |
572 | \r | |
573 | //\r | |
574 | // The Device Driver should disable this device after disconnect\r | |
575 | // so the Pci Bus driver will not touch this device any more.\r | |
576 | // Restore the register field to the original value\r | |
577 | //\r | |
578 | PciIoDevice->Registered = FALSE;\r | |
579 | PciIoDevice->Handle = NULL;\r | |
580 | } else {\r | |
9060e3ec | 581 | //\r |
582 | // Handle may be closed before\r | |
583 | //\r | |
584 | return EFI_SUCCESS;\r | |
585 | }\r | |
586 | \r | |
587 | return EFI_SUCCESS;\r | |
588 | }\r | |
589 | \r | |
590 | /**\r | |
591 | Start to manage the PCI device on the specified root bridge or PCI-PCI Bridge.\r | |
592 | \r | |
593 | @param Controller The root bridge handle.\r | |
594 | @param RootBridge A pointer to the PCI_IO_DEVICE.\r | |
595 | @param RemainingDevicePath A pointer to the EFI_DEVICE_PATH_PROTOCOL.\r | |
596 | @param NumberOfChildren Children number.\r | |
597 | @param ChildHandleBuffer A pointer to the child handle buffer.\r | |
598 | \r | |
599 | @retval EFI_NOT_READY Device is not allocated.\r | |
600 | @retval EFI_UNSUPPORTED Device only support PCI-PCI bridge.\r | |
601 | @retval EFI_NOT_FOUND Can not find the specific device.\r | |
602 | @retval EFI_SUCCESS Success to start Pci devices on bridge.\r | |
603 | \r | |
604 | **/\r | |
605 | EFI_STATUS\r | |
606 | StartPciDevicesOnBridge (\r | |
1436aea4 MK |
607 | IN EFI_HANDLE Controller,\r |
608 | IN PCI_IO_DEVICE *RootBridge,\r | |
609 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,\r | |
610 | IN OUT UINT8 *NumberOfChildren,\r | |
611 | IN OUT EFI_HANDLE *ChildHandleBuffer\r | |
9060e3ec | 612 | )\r |
613 | \r | |
614 | {\r | |
615 | PCI_IO_DEVICE *PciIoDevice;\r | |
616 | EFI_DEV_PATH_PTR Node;\r | |
617 | EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;\r | |
618 | EFI_STATUS Status;\r | |
619 | LIST_ENTRY *CurrentLink;\r | |
620 | UINT64 Supports;\r | |
621 | \r | |
622 | PciIoDevice = NULL;\r | |
623 | CurrentLink = RootBridge->ChildList.ForwardLink;\r | |
624 | \r | |
625 | while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {\r | |
9060e3ec | 626 | PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
627 | if (RemainingDevicePath != NULL) {\r | |
9060e3ec | 628 | Node.DevPath = RemainingDevicePath;\r |
629 | \r | |
1436aea4 MK |
630 | if ((Node.Pci->Device != PciIoDevice->DeviceNumber) ||\r |
631 | (Node.Pci->Function != PciIoDevice->FunctionNumber))\r | |
632 | {\r | |
9060e3ec | 633 | CurrentLink = CurrentLink->ForwardLink;\r |
634 | continue;\r | |
635 | }\r | |
636 | \r | |
637 | //\r | |
638 | // Check if the device has been assigned with required resource\r | |
639 | //\r | |
640 | if (!PciIoDevice->Allocated) {\r | |
641 | return EFI_NOT_READY;\r | |
642 | }\r | |
643 | \r | |
644 | //\r | |
645 | // Check if the current node has been registered before\r | |
646 | // If it is not, register it\r | |
647 | //\r | |
648 | if (!PciIoDevice->Registered) {\r | |
649 | Status = RegisterPciDevice (\r | |
650 | Controller,\r | |
651 | PciIoDevice,\r | |
652 | NULL\r | |
653 | );\r | |
9060e3ec | 654 | }\r |
655 | \r | |
1436aea4 | 656 | if ((NumberOfChildren != NULL) && (ChildHandleBuffer != NULL) && PciIoDevice->Registered) {\r |
9060e3ec | 657 | ChildHandleBuffer[*NumberOfChildren] = PciIoDevice->Handle;\r |
658 | (*NumberOfChildren)++;\r | |
659 | }\r | |
660 | \r | |
661 | //\r | |
662 | // Get the next device path\r | |
663 | //\r | |
664 | CurrentDevicePath = NextDevicePathNode (RemainingDevicePath);\r | |
665 | if (IsDevicePathEnd (CurrentDevicePath)) {\r | |
666 | return EFI_SUCCESS;\r | |
667 | }\r | |
668 | \r | |
669 | //\r | |
670 | // If it is a PPB\r | |
671 | //\r | |
13fd0d50 | 672 | if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r |
9060e3ec | 673 | Status = StartPciDevicesOnBridge (\r |
674 | Controller,\r | |
675 | PciIoDevice,\r | |
676 | CurrentDevicePath,\r | |
677 | NumberOfChildren,\r | |
678 | ChildHandleBuffer\r | |
679 | );\r | |
680 | \r | |
681 | PciIoDevice->PciIo.Attributes (\r | |
682 | &(PciIoDevice->PciIo),\r | |
683 | EfiPciIoAttributeOperationSupported,\r | |
684 | 0,\r | |
685 | &Supports\r | |
686 | );\r | |
a8035b90 | 687 | Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r |
9060e3ec | 688 | PciIoDevice->PciIo.Attributes (\r |
689 | &(PciIoDevice->PciIo),\r | |
690 | EfiPciIoAttributeOperationEnable,\r | |
691 | Supports,\r | |
692 | NULL\r | |
693 | );\r | |
694 | \r | |
695 | return Status;\r | |
696 | } else {\r | |
9060e3ec | 697 | //\r |
698 | // Currently, the PCI bus driver only support PCI-PCI bridge\r | |
699 | //\r | |
700 | return EFI_UNSUPPORTED;\r | |
701 | }\r | |
9060e3ec | 702 | } else {\r |
9060e3ec | 703 | //\r |
704 | // If remaining device path is NULL,\r | |
705 | // try to enable all the pci devices under this bridge\r | |
706 | //\r | |
707 | if (!PciIoDevice->Registered && PciIoDevice->Allocated) {\r | |
708 | Status = RegisterPciDevice (\r | |
709 | Controller,\r | |
710 | PciIoDevice,\r | |
711 | NULL\r | |
712 | );\r | |
9060e3ec | 713 | }\r |
714 | \r | |
1436aea4 | 715 | if ((NumberOfChildren != NULL) && (ChildHandleBuffer != NULL) && PciIoDevice->Registered) {\r |
9060e3ec | 716 | ChildHandleBuffer[*NumberOfChildren] = PciIoDevice->Handle;\r |
717 | (*NumberOfChildren)++;\r | |
718 | }\r | |
719 | \r | |
13fd0d50 | 720 | if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r |
9060e3ec | 721 | Status = StartPciDevicesOnBridge (\r |
722 | Controller,\r | |
723 | PciIoDevice,\r | |
724 | RemainingDevicePath,\r | |
725 | NumberOfChildren,\r | |
726 | ChildHandleBuffer\r | |
727 | );\r | |
728 | \r | |
729 | PciIoDevice->PciIo.Attributes (\r | |
730 | &(PciIoDevice->PciIo),\r | |
731 | EfiPciIoAttributeOperationSupported,\r | |
732 | 0,\r | |
733 | &Supports\r | |
734 | );\r | |
a8035b90 | 735 | Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r |
9060e3ec | 736 | PciIoDevice->PciIo.Attributes (\r |
737 | &(PciIoDevice->PciIo),\r | |
738 | EfiPciIoAttributeOperationEnable,\r | |
739 | Supports,\r | |
740 | NULL\r | |
741 | );\r | |
9060e3ec | 742 | }\r |
743 | \r | |
744 | CurrentLink = CurrentLink->ForwardLink;\r | |
745 | }\r | |
746 | }\r | |
747 | \r | |
748 | if (PciIoDevice == NULL) {\r | |
749 | return EFI_NOT_FOUND;\r | |
750 | } else {\r | |
751 | return EFI_SUCCESS;\r | |
752 | }\r | |
753 | }\r | |
754 | \r | |
755 | /**\r | |
756 | Start to manage all the PCI devices it found previously under\r | |
757 | the entire host bridge.\r | |
758 | \r | |
759 | @param Controller The root bridge handle.\r | |
760 | \r | |
761 | @retval EFI_NOT_READY Device is not allocated.\r | |
762 | @retval EFI_SUCCESS Success to start Pci device on host bridge.\r | |
763 | \r | |
764 | **/\r | |
765 | EFI_STATUS\r | |
766 | StartPciDevices (\r | |
1436aea4 | 767 | IN EFI_HANDLE Controller\r |
9060e3ec | 768 | )\r |
769 | {\r | |
1436aea4 MK |
770 | PCI_IO_DEVICE *RootBridge;\r |
771 | EFI_HANDLE ThisHostBridge;\r | |
772 | LIST_ENTRY *CurrentLink;\r | |
9060e3ec | 773 | \r |
774 | RootBridge = GetRootBridgeByHandle (Controller);\r | |
775 | ASSERT (RootBridge != NULL);\r | |
776 | ThisHostBridge = RootBridge->PciRootBridgeIo->ParentHandle;\r | |
777 | \r | |
778 | CurrentLink = mPciDevicePool.ForwardLink;\r | |
779 | \r | |
780 | while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {\r | |
9060e3ec | 781 | RootBridge = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
782 | //\r | |
783 | // Locate the right root bridge to start\r | |
784 | //\r | |
785 | if (RootBridge->PciRootBridgeIo->ParentHandle == ThisHostBridge) {\r | |
786 | StartPciDevicesOnBridge (\r | |
1436aea4 MK |
787 | RootBridge->Handle,\r |
788 | RootBridge,\r | |
789 | NULL,\r | |
790 | NULL,\r | |
791 | NULL\r | |
792 | );\r | |
9060e3ec | 793 | }\r |
794 | \r | |
795 | CurrentLink = CurrentLink->ForwardLink;\r | |
796 | }\r | |
797 | \r | |
798 | return EFI_SUCCESS;\r | |
799 | }\r | |
800 | \r | |
801 | /**\r | |
802 | Create root bridge device.\r | |
803 | \r | |
fcdfcdbf | 804 | @param RootBridgeHandle Specified root bridge handle.\r |
9060e3ec | 805 | \r |
806 | @return The crated root bridge device instance, NULL means no\r | |
807 | root bridge device instance created.\r | |
808 | \r | |
809 | **/\r | |
810 | PCI_IO_DEVICE *\r | |
811 | CreateRootBridge (\r | |
1436aea4 | 812 | IN EFI_HANDLE RootBridgeHandle\r |
9060e3ec | 813 | )\r |
814 | {\r | |
1436aea4 MK |
815 | EFI_STATUS Status;\r |
816 | PCI_IO_DEVICE *Dev;\r | |
817 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
818 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
9060e3ec | 819 | \r |
820 | Dev = AllocateZeroPool (sizeof (PCI_IO_DEVICE));\r | |
821 | if (Dev == NULL) {\r | |
822 | return NULL;\r | |
823 | }\r | |
824 | \r | |
1436aea4 MK |
825 | Dev->Signature = PCI_IO_DEVICE_SIGNATURE;\r |
826 | Dev->Handle = RootBridgeHandle;\r | |
9060e3ec | 827 | InitializeListHead (&Dev->ChildList);\r |
828 | \r | |
829 | Status = gBS->OpenProtocol (\r | |
830 | RootBridgeHandle,\r | |
831 | &gEfiDevicePathProtocolGuid,\r | |
1436aea4 | 832 | (VOID **)&ParentDevicePath,\r |
9060e3ec | 833 | gPciBusDriverBinding.DriverBindingHandle,\r |
834 | RootBridgeHandle,\r | |
835 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
836 | );\r | |
837 | \r | |
838 | if (EFI_ERROR (Status)) {\r | |
839 | FreePool (Dev);\r | |
840 | return NULL;\r | |
841 | }\r | |
842 | \r | |
843 | //\r | |
844 | // Record the root bridge parent device path\r | |
845 | //\r | |
846 | Dev->DevicePath = DuplicateDevicePath (ParentDevicePath);\r | |
847 | \r | |
848 | //\r | |
849 | // Get the pci root bridge io protocol\r | |
850 | //\r | |
851 | Status = gBS->OpenProtocol (\r | |
852 | RootBridgeHandle,\r | |
853 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
1436aea4 | 854 | (VOID **)&PciRootBridgeIo,\r |
9060e3ec | 855 | gPciBusDriverBinding.DriverBindingHandle,\r |
856 | RootBridgeHandle,\r | |
857 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
858 | );\r | |
859 | \r | |
860 | if (EFI_ERROR (Status)) {\r | |
861 | FreePciDevice (Dev);\r | |
862 | return NULL;\r | |
863 | }\r | |
864 | \r | |
865 | Dev->PciRootBridgeIo = PciRootBridgeIo;\r | |
866 | \r | |
867 | //\r | |
868 | // Initialize the PCI I/O instance structure\r | |
869 | //\r | |
870 | InitializePciIoInstance (Dev);\r | |
871 | InitializePciDriverOverrideInstance (Dev);\r | |
872 | InitializePciLoadFile2 (Dev);\r | |
873 | \r | |
874 | //\r | |
875 | // Initialize reserved resource list and\r | |
876 | // option rom driver list\r | |
877 | //\r | |
878 | InitializeListHead (&Dev->ReservedResourceList);\r | |
879 | InitializeListHead (&Dev->OptionRomDriverList);\r | |
880 | \r | |
881 | return Dev;\r | |
882 | }\r | |
883 | \r | |
884 | /**\r | |
885 | Get root bridge device instance by specific root bridge handle.\r | |
886 | \r | |
887 | @param RootBridgeHandle Given root bridge handle.\r | |
888 | \r | |
889 | @return The root bridge device instance, NULL means no root bridge\r | |
890 | device instance found.\r | |
891 | \r | |
892 | **/\r | |
893 | PCI_IO_DEVICE *\r | |
894 | GetRootBridgeByHandle (\r | |
1436aea4 | 895 | EFI_HANDLE RootBridgeHandle\r |
9060e3ec | 896 | )\r |
897 | {\r | |
1436aea4 MK |
898 | PCI_IO_DEVICE *RootBridgeDev;\r |
899 | LIST_ENTRY *CurrentLink;\r | |
9060e3ec | 900 | \r |
901 | CurrentLink = mPciDevicePool.ForwardLink;\r | |
902 | \r | |
903 | while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {\r | |
9060e3ec | 904 | RootBridgeDev = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
905 | if (RootBridgeDev->Handle == RootBridgeHandle) {\r | |
906 | return RootBridgeDev;\r | |
907 | }\r | |
908 | \r | |
909 | CurrentLink = CurrentLink->ForwardLink;\r | |
910 | }\r | |
911 | \r | |
912 | return NULL;\r | |
913 | }\r | |
914 | \r | |
915 | /**\r | |
fcdfcdbf | 916 | Judge whether Pci device existed.\r |
9060e3ec | 917 | \r |
fcdfcdbf | 918 | @param Bridge Parent bridge instance.\r |
9060e3ec | 919 | @param PciIoDevice Device instance.\r |
920 | \r | |
921 | @retval TRUE Pci device existed.\r | |
922 | @retval FALSE Pci device did not exist.\r | |
923 | \r | |
924 | **/\r | |
925 | BOOLEAN\r | |
926 | PciDeviceExisted (\r | |
1436aea4 MK |
927 | IN PCI_IO_DEVICE *Bridge,\r |
928 | IN PCI_IO_DEVICE *PciIoDevice\r | |
9060e3ec | 929 | )\r |
930 | {\r | |
1436aea4 MK |
931 | PCI_IO_DEVICE *Temp;\r |
932 | LIST_ENTRY *CurrentLink;\r | |
9060e3ec | 933 | \r |
934 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
935 | \r | |
936 | while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r | |
9060e3ec | 937 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
938 | \r | |
939 | if (Temp == PciIoDevice) {\r | |
940 | return TRUE;\r | |
941 | }\r | |
942 | \r | |
943 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
944 | if (PciDeviceExisted (Temp, PciIoDevice)) {\r | |
945 | return TRUE;\r | |
946 | }\r | |
947 | }\r | |
948 | \r | |
949 | CurrentLink = CurrentLink->ForwardLink;\r | |
950 | }\r | |
951 | \r | |
952 | return FALSE;\r | |
953 | }\r | |
954 | \r | |
955 | /**\r | |
983f5abb | 956 | Get the active VGA device on the specified Host Bridge.\r |
9060e3ec | 957 | \r |
983f5abb | 958 | @param HostBridgeHandle Host Bridge handle.\r |
9060e3ec | 959 | \r |
983f5abb | 960 | @return The active VGA device on the specified Host Bridge.\r |
9060e3ec | 961 | \r |
962 | **/\r | |
963 | PCI_IO_DEVICE *\r | |
983f5abb | 964 | LocateVgaDeviceOnHostBridge (\r |
1436aea4 | 965 | IN EFI_HANDLE HostBridgeHandle\r |
9060e3ec | 966 | )\r |
967 | {\r | |
1436aea4 MK |
968 | LIST_ENTRY *CurrentLink;\r |
969 | PCI_IO_DEVICE *PciIoDevice;\r | |
9060e3ec | 970 | \r |
971 | CurrentLink = mPciDevicePool.ForwardLink;\r | |
972 | \r | |
973 | while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {\r | |
983f5abb | 974 | PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
9060e3ec | 975 | \r |
1436aea4 | 976 | if (PciIoDevice->PciRootBridgeIo->ParentHandle == HostBridgeHandle) {\r |
983f5abb | 977 | PciIoDevice = LocateVgaDevice (PciIoDevice);\r |
9060e3ec | 978 | \r |
983f5abb RN |
979 | if (PciIoDevice != NULL) {\r |
980 | return PciIoDevice;\r | |
9060e3ec | 981 | }\r |
982 | }\r | |
983 | \r | |
984 | CurrentLink = CurrentLink->ForwardLink;\r | |
985 | }\r | |
986 | \r | |
987 | return NULL;\r | |
988 | }\r | |
989 | \r | |
990 | /**\r | |
06da1e31 | 991 | Locate the active VGA device under the bridge.\r |
9060e3ec | 992 | \r |
06da1e31 | 993 | @param Bridge PCI IO instance for the bridge.\r |
9060e3ec | 994 | \r |
995 | @return The active VGA device.\r | |
996 | \r | |
997 | **/\r | |
998 | PCI_IO_DEVICE *\r | |
06da1e31 | 999 | LocateVgaDevice (\r |
1436aea4 | 1000 | IN PCI_IO_DEVICE *Bridge\r |
9060e3ec | 1001 | )\r |
1002 | {\r | |
1436aea4 MK |
1003 | LIST_ENTRY *CurrentLink;\r |
1004 | PCI_IO_DEVICE *PciIoDevice;\r | |
9060e3ec | 1005 | \r |
06da1e31 | 1006 | CurrentLink = Bridge->ChildList.ForwardLink;\r |
9060e3ec | 1007 | \r |
06da1e31 | 1008 | while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r |
06da1e31 | 1009 | PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r |
9060e3ec | 1010 | \r |
1436aea4 MK |
1011 | if (IS_PCI_VGA (&PciIoDevice->Pci) &&\r |
1012 | ((PciIoDevice->Attributes &\r | |
1013 | (EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY |\r | |
1014 | EFI_PCI_IO_ATTRIBUTE_VGA_IO |\r | |
1015 | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) != 0))\r | |
1016 | {\r | |
06da1e31 | 1017 | return PciIoDevice;\r |
9060e3ec | 1018 | }\r |
1019 | \r | |
06da1e31 | 1020 | if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r |
06da1e31 | 1021 | PciIoDevice = LocateVgaDevice (PciIoDevice);\r |
9060e3ec | 1022 | \r |
06da1e31 RN |
1023 | if (PciIoDevice != NULL) {\r |
1024 | return PciIoDevice;\r | |
9060e3ec | 1025 | }\r |
1026 | }\r | |
1027 | \r | |
1028 | CurrentLink = CurrentLink->ForwardLink;\r | |
1029 | }\r | |
1030 | \r | |
1031 | return NULL;\r | |
1032 | }\r |