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1 | /** @file\r |
2 | Runtime Lib function for QNC internal network access.\r | |
3 | \r | |
4 | Copyright (c) 2013-2015 Intel Corporation.\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | \r | |
17 | #include <PiDxe.h>\r | |
18 | \r | |
19 | #include <Guid/EventGroup.h>\r | |
20 | \r | |
21 | #include <Library/BaseLib.h>\r | |
22 | #include <Library/DebugLib.h>\r | |
23 | #include <Library/UefiBootServicesTableLib.h>\r | |
24 | #include <Library/UefiRuntimeLib.h>\r | |
25 | #include <Library/QNCAccessLib.h>\r | |
26 | \r | |
27 | ///\r | |
28 | /// Set Virtual Address Map Event\r | |
29 | ///\r | |
30 | EFI_EVENT mDxeRuntimeQncAccessLibVirtualNotifyEvent = NULL;\r | |
31 | \r | |
32 | ///\r | |
33 | /// Module global that contains the base physical address of the PCI Express MMIO range.\r | |
34 | ///\r | |
35 | UINTN mDxeRuntimeQncAccessLibPciExpressBaseAddress = 0;\r | |
36 | \r | |
37 | /**\r | |
38 | Convert the physical PCI Express MMIO address to a virtual address.\r | |
39 | \r | |
40 | @param[in] Event The event that is being processed.\r | |
41 | @param[in] Context The Event Context.\r | |
42 | **/\r | |
43 | VOID\r | |
44 | EFIAPI\r | |
45 | DxeRuntimeQncAccessLibVirtualNotify (\r | |
46 | IN EFI_EVENT Event,\r | |
47 | IN VOID *Context\r | |
48 | )\r | |
49 | {\r | |
50 | EFI_STATUS Status;\r | |
51 | \r | |
52 | //\r | |
53 | // Convert the physical PCI Express MMIO address to a virtual address.\r | |
54 | //\r | |
55 | Status = EfiConvertPointer (0, (VOID **) &mDxeRuntimeQncAccessLibPciExpressBaseAddress);\r | |
56 | \r | |
57 | ASSERT_EFI_ERROR (Status);\r | |
58 | }\r | |
59 | \r | |
60 | /**\r | |
61 | The constructor function to setup globals and goto virtual mode notify.\r | |
62 | \r | |
63 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
64 | @param SystemTable A pointer to the EFI System Table.\r | |
65 | \r | |
66 | @retval EFI_SUCCESS The constructor completed successfully.\r | |
67 | @retval Other value The constructor did not complete successfully.\r | |
68 | \r | |
69 | **/\r | |
70 | EFI_STATUS\r | |
71 | EFIAPI\r | |
72 | DxeRuntimeQncAccessLibConstructor (\r | |
73 | IN EFI_HANDLE ImageHandle,\r | |
74 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
75 | )\r | |
76 | {\r | |
77 | EFI_STATUS Status;\r | |
78 | \r | |
79 | //\r | |
80 | // Cache the physical address of the PCI Express MMIO range into a module global variable\r | |
81 | //\r | |
82 | mDxeRuntimeQncAccessLibPciExpressBaseAddress = (UINTN) PcdGet64(PcdPciExpressBaseAddress);\r | |
83 | \r | |
84 | //\r | |
85 | // Register SetVirtualAddressMap () notify function\r | |
86 | //\r | |
87 | Status = gBS->CreateEventEx (\r | |
88 | EVT_NOTIFY_SIGNAL,\r | |
89 | TPL_NOTIFY,\r | |
90 | DxeRuntimeQncAccessLibVirtualNotify,\r | |
91 | NULL,\r | |
92 | &gEfiEventVirtualAddressChangeGuid,\r | |
93 | &mDxeRuntimeQncAccessLibVirtualNotifyEvent\r | |
94 | );\r | |
95 | ASSERT_EFI_ERROR (Status);\r | |
96 | \r | |
97 | return Status;\r | |
98 | }\r | |
99 | \r | |
100 | /**\r | |
101 | The destructor function frees any allocated buffers and closes the Set Virtual\r | |
102 | Address Map event.\r | |
103 | \r | |
104 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
105 | @param SystemTable A pointer to the EFI System Table.\r | |
106 | \r | |
107 | @retval EFI_SUCCESS The destructor completed successfully.\r | |
108 | @retval Other value The destructor did not complete successfully.\r | |
109 | \r | |
110 | **/\r | |
111 | EFI_STATUS\r | |
112 | EFIAPI\r | |
113 | DxeRuntimeQncAccessLibDestructor (\r | |
114 | IN EFI_HANDLE ImageHandle,\r | |
115 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
116 | )\r | |
117 | {\r | |
118 | EFI_STATUS Status;\r | |
119 | \r | |
120 | //\r | |
121 | // Close the Set Virtual Address Map event\r | |
122 | //\r | |
123 | Status = gBS->CloseEvent (mDxeRuntimeQncAccessLibVirtualNotifyEvent);\r | |
124 | ASSERT_EFI_ERROR (Status);\r | |
125 | \r | |
126 | return Status;\r | |
127 | }\r | |
128 | \r | |
129 | /**\r | |
130 | Gets the base address of PCI Express for Quark North Cluster.\r | |
131 | \r | |
132 | @return The base address of PCI Express for Quark North Cluster.\r | |
133 | \r | |
134 | **/\r | |
135 | UINTN\r | |
136 | EFIAPI\r | |
137 | QncGetPciExpressBaseAddress (\r | |
138 | VOID\r | |
139 | )\r | |
140 | {\r | |
141 | //\r | |
142 | // If system goes to virtual mode then virtual notify callback will update\r | |
143 | // mDxeRuntimeQncAccessLibPciExpressBaseAddress with virtual address of\r | |
144 | // PCIe memory base.\r | |
145 | //\r | |
146 | return mDxeRuntimeQncAccessLibPciExpressBaseAddress;\r | |
147 | }\r | |
148 | \r |