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397bdc99 OM |
1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2011-2014, ARM Limited. All rights reserved.\r | |
4 | *\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 | |
60775c51 | 15 | #include <Base.h>\r |
397bdc99 | 16 | #include <Library/ArmGicLib.h>\r |
60775c51 | 17 | #include <Library/IoLib.h>\r |
397bdc99 OM |
18 | \r |
19 | UINTN\r | |
20 | EFIAPI\r | |
21 | ArmGicGetInterfaceIdentification (\r | |
22 | IN INTN GicInterruptInterfaceBase\r | |
23 | )\r | |
24 | {\r | |
25 | // Read the GIC Identification Register\r | |
26 | return MmioRead32 (GicInterruptInterfaceBase + ARM_GIC_ICCIIDR);\r | |
27 | }\r | |
28 | \r | |
29 | UINTN\r | |
30 | EFIAPI\r | |
31 | ArmGicGetMaxNumInterrupts (\r | |
32 | IN INTN GicDistributorBase\r | |
33 | )\r | |
34 | {\r | |
35 | return 32 * ((MmioRead32 (GicDistributorBase + ARM_GIC_ICDICTR) & 0x1F) + 1);\r | |
36 | }\r | |
37 | \r | |
38 | VOID\r | |
39 | EFIAPI\r | |
40 | ArmGicSendSgiTo (\r | |
41 | IN INTN GicDistributorBase,\r | |
42 | IN INTN TargetListFilter,\r | |
43 | IN INTN CPUTargetList,\r | |
44 | IN INTN SgiId\r | |
45 | )\r | |
46 | {\r | |
47 | MmioWrite32 (GicDistributorBase + ARM_GIC_ICDSGIR, ((TargetListFilter & 0x3) << 24) | ((CPUTargetList & 0xFF) << 16) | SgiId);\r | |
48 | }\r | |
49 | \r | |
50 | UINTN\r | |
51 | EFIAPI\r | |
52 | ArmGicAcknowledgeInterrupt (\r | |
53 | IN UINTN GicInterruptInterfaceBase\r | |
54 | )\r | |
55 | {\r | |
56 | // Read the Interrupt Acknowledge Register\r | |
57 | return MmioRead32 (GicInterruptInterfaceBase + ARM_GIC_ICCIAR);\r | |
58 | }\r | |
59 | \r | |
60 | VOID\r | |
61 | EFIAPI\r | |
62 | ArmGicEndOfInterrupt (\r | |
63 | IN UINTN GicInterruptInterfaceBase,\r | |
64 | IN UINTN Source\r | |
65 | )\r | |
66 | {\r | |
67 | MmioWrite32 (GicInterruptInterfaceBase + ARM_GIC_ICCEIOR, Source);\r | |
68 | }\r | |
69 | \r | |
70 | VOID\r | |
71 | EFIAPI\r | |
72 | ArmGicEnableInterrupt (\r | |
73 | IN UINTN GicDistributorBase,\r | |
74 | IN UINTN Source\r | |
75 | )\r | |
76 | {\r | |
77 | UINT32 RegOffset;\r | |
78 | UINTN RegShift;\r | |
79 | \r | |
80 | // Calculate enable register offset and bit position\r | |
81 | RegOffset = Source / 32;\r | |
82 | RegShift = Source % 32;\r | |
83 | \r | |
84 | // Write set-enable register\r | |
85 | MmioWrite32 (GicDistributorBase + ARM_GIC_ICDISER + (4 * RegOffset), 1 << RegShift);\r | |
86 | }\r | |
87 | \r | |
88 | VOID\r | |
89 | EFIAPI\r | |
90 | ArmGicDisableInterrupt (\r | |
91 | IN UINTN GicDistributorBase,\r | |
92 | IN UINTN Source\r | |
93 | )\r | |
94 | {\r | |
95 | UINT32 RegOffset;\r | |
96 | UINTN RegShift;\r | |
97 | \r | |
98 | // Calculate enable register offset and bit position\r | |
99 | RegOffset = Source / 32;\r | |
100 | RegShift = Source % 32;\r | |
101 | \r | |
102 | // Write clear-enable register\r | |
103 | MmioWrite32 (GicDistributorBase + ARM_GIC_ICDICER + (4 * RegOffset), 1 << RegShift);\r | |
104 | }\r | |
105 | \r | |
106 | BOOLEAN\r | |
107 | EFIAPI\r | |
108 | ArmGicIsInterruptEnabled (\r | |
109 | IN UINTN GicDistributorBase,\r | |
110 | IN UINTN Source\r | |
111 | )\r | |
112 | {\r | |
113 | UINT32 RegOffset;\r | |
114 | UINTN RegShift;\r | |
115 | \r | |
116 | // Calculate enable register offset and bit position\r | |
117 | RegOffset = Source / 32;\r | |
118 | RegShift = Source % 32;\r | |
119 | \r | |
120 | return ((MmioRead32 (GicDistributorBase + ARM_GIC_ICDISER + (4 * RegOffset)) & (1 << RegShift)) != 0);\r | |
121 | }\r | |
60775c51 OM |
122 | \r |
123 | VOID\r | |
124 | EFIAPI\r | |
125 | ArmGicDisableDistributor (\r | |
126 | IN INTN GicDistributorBase\r | |
127 | )\r | |
128 | {\r | |
129 | // Disable Gic Distributor\r | |
130 | MmioWrite32 (GicDistributorBase + ARM_GIC_ICDDCR, 0x0);\r | |
131 | }\r |