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7ff66d3c RN |
1 | /** @file\r |
2 | Null instance of PCI Host Bridge Library with empty functions.\r | |
3 | \r | |
4 | Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r | |
9b6b9385 | 5 | \r |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
7ff66d3c RN |
7 | \r |
8 | **/\r | |
9 | #include <PiDxe.h>\r | |
10 | #include <Library/PciHostBridgeLib.h>\r | |
11 | #include <Library/DebugLib.h>\r | |
12 | \r | |
9b6b9385 | 13 | GLOBAL_REMOVE_IF_UNREFERENCED\r |
1436aea4 | 14 | CHAR16 *mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = {\r |
7ff66d3c RN |
15 | L"Mem", L"I/O", L"Bus"\r |
16 | };\r | |
17 | \r | |
18 | /**\r | |
19 | Return all the root bridge instances in an array.\r | |
20 | \r | |
21 | @param Count Return the count of root bridge instances.\r | |
22 | \r | |
23 | @return All the root bridge instances in an array.\r | |
24 | The array should be passed into PciHostBridgeFreeRootBridges()\r | |
25 | when it's not used.\r | |
26 | **/\r | |
27 | PCI_ROOT_BRIDGE *\r | |
28 | EFIAPI\r | |
29 | PciHostBridgeGetRootBridges (\r | |
1436aea4 | 30 | UINTN *Count\r |
7ff66d3c RN |
31 | )\r |
32 | {\r | |
33 | *Count = 0;\r | |
34 | return NULL;\r | |
35 | }\r | |
36 | \r | |
37 | /**\r | |
eea222ce | 38 | Free the root bridge instances array returned from PciHostBridgeGetRootBridges().\r |
7ff66d3c | 39 | \r |
eea222ce RN |
40 | @param Bridges The root bridge instances array.\r |
41 | @param Count The count of the array.\r | |
7ff66d3c RN |
42 | **/\r |
43 | VOID\r | |
44 | EFIAPI\r | |
45 | PciHostBridgeFreeRootBridges (\r | |
1436aea4 MK |
46 | PCI_ROOT_BRIDGE *Bridges,\r |
47 | UINTN Count\r | |
7ff66d3c RN |
48 | )\r |
49 | {\r | |
50 | return;\r | |
51 | }\r | |
52 | \r | |
53 | /**\r | |
54 | Inform the platform that the resource conflict happens.\r | |
55 | \r | |
56 | @param HostBridgeHandle Handle of the Host Bridge.\r | |
9b6b9385 LE |
57 | @param Configuration Pointer to PCI I/O and PCI memory resource\r |
58 | descriptors. The Configuration contains the resources\r | |
59 | for all the root bridges. The resource for each root\r | |
60 | bridge is terminated with END descriptor and an\r | |
61 | additional END is appended indicating the end of the\r | |
62 | entire resources. The resource descriptor field\r | |
63 | values follow the description in\r | |
64 | EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL\r | |
65 | .SubmitResources().\r | |
7ff66d3c RN |
66 | **/\r |
67 | VOID\r | |
68 | EFIAPI\r | |
69 | PciHostBridgeResourceConflict (\r | |
1436aea4 MK |
70 | EFI_HANDLE HostBridgeHandle,\r |
71 | VOID *Configuration\r | |
7ff66d3c RN |
72 | )\r |
73 | {\r | |
1436aea4 MK |
74 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor;\r |
75 | UINTN RootBridgeIndex;\r | |
76 | \r | |
87000d77 | 77 | DEBUG ((DEBUG_ERROR, "PciHostBridge: Resource conflict happens!\n"));\r |
7ff66d3c RN |
78 | \r |
79 | RootBridgeIndex = 0;\r | |
1436aea4 | 80 | Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Configuration;\r |
7ff66d3c | 81 | while (Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) {\r |
87000d77 | 82 | DEBUG ((DEBUG_ERROR, "RootBridge[%d]:\n", RootBridgeIndex++));\r |
1436aea4 MK |
83 | for ( ; Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR; Descriptor++) {\r |
84 | ASSERT (\r | |
85 | Descriptor->ResType <\r | |
86 | (sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr) /\r | |
87 | sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr[0])\r | |
88 | )\r | |
89 | );\r | |
90 | DEBUG ((\r | |
91 | DEBUG_ERROR,\r | |
92 | " %s: Length/Alignment = 0x%lx / 0x%lx\n",\r | |
93 | mPciHostBridgeLibAcpiAddressSpaceTypeStr[Descriptor->ResType],\r | |
94 | Descriptor->AddrLen,\r | |
95 | Descriptor->AddrRangeMax\r | |
96 | ));\r | |
7ff66d3c | 97 | if (Descriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {\r |
1436aea4 MK |
98 | DEBUG ((\r |
99 | DEBUG_ERROR,\r | |
100 | " Granularity/SpecificFlag = %ld / %02x%s\n",\r | |
101 | Descriptor->AddrSpaceGranularity,\r | |
102 | Descriptor->SpecificFlag,\r | |
103 | ((Descriptor->SpecificFlag &\r | |
104 | EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABLE\r | |
105 | ) != 0) ? L" (Prefetchable)" : L""\r | |
106 | ));\r | |
7ff66d3c RN |
107 | }\r |
108 | }\r | |
1436aea4 | 109 | \r |
7ff66d3c RN |
110 | //\r |
111 | // Skip the END descriptor for root bridge\r | |
112 | //\r | |
113 | ASSERT (Descriptor->Desc == ACPI_END_TAG_DESCRIPTOR);\r | |
9b6b9385 | 114 | Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)(\r |
1436aea4 MK |
115 | (EFI_ACPI_END_TAG_DESCRIPTOR *)Descriptor + 1\r |
116 | );\r | |
7ff66d3c RN |
117 | }\r |
118 | }\r |