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1 | /** @file\r |
2 | Abstraction for hardware based interrupt routine\r | |
3402aac7 | 3 | \r |
2ef2b01e A |
4 | On non IA-32 systems it is common to have a single hardware interrupt vector\r |
5 | and a 2nd layer of software that routes the interrupt handlers based on the\r | |
3402aac7 RC |
6 | interrupt source. This protocol enables this routing. The driver implementing\r |
7 | this protocol is responsible for clearing the pending interrupt in the\r | |
8 | interrupt routing hardware. The HARDWARE_INTERRUPT_HANDLER is responsible\r | |
2ef2b01e A |
9 | for clearing interrupt sources from individual devices.\r |
10 | \r | |
11 | \r | |
60274cca | 12 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
2ef2b01e | 13 | \r |
60274cca | 14 | This program and the accompanying materials\r |
2ef2b01e A |
15 | are licensed and made available under the terms and conditions of the BSD License\r |
16 | which accompanies this distribution. The full text of the license may be found at\r | |
17 | http://opensource.org/licenses/bsd-license.php\r | |
18 | \r | |
19 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
20 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
21 | \r | |
22 | **/\r | |
23 | \r | |
24 | #ifndef __HARDWARE_INTERRUPT_H__\r | |
25 | #define __HARDWARE_INTERRUPT_H__\r | |
26 | \r | |
27 | #include <Protocol/DebugSupport.h>\r | |
28 | \r | |
29 | \r | |
30 | //\r | |
31 | // Protocol GUID\r | |
32 | //\r | |
33 | // EAB39028-3D05-4316-AD0C-D64808DA3FF1\r | |
34 | \r | |
35 | #define EFI_HARDWARE_INTERRUPT_PROTOCOL_GGUID \\r | |
36 | { 0x2890B3EA, 0x053D, 0x1643, { 0xAD, 0x0C, 0xD6, 0x48, 0x08, 0xDA, 0x3F, 0xF1 } }\r | |
37 | \r | |
38 | \r | |
39 | typedef struct _EFI_HARDWARE_INTERRUPT_PROTOCOL EFI_HARDWARE_INTERRUPT_PROTOCOL;\r | |
40 | \r | |
41 | \r | |
42 | typedef UINTN HARDWARE_INTERRUPT_SOURCE;\r | |
43 | \r | |
44 | \r | |
45 | /**\r | |
46 | C Interrupt Handler calledin the interrupt context when Source interrupt is active.\r | |
47 | \r | |
48 | @param Source Source of the interrupt. Hardware routing off a specific platform defines\r | |
49 | what source means.\r | |
50 | @param SystemContext Pointer to system register context. Mostly used by debuggers and will\r | |
3402aac7 | 51 | update the system context after the return from the interrupt if\r |
2ef2b01e A |
52 | modified. Don't change these values unless you know what you are doing\r |
53 | \r | |
54 | **/\r | |
55 | typedef\r | |
56 | VOID\r | |
57 | (EFIAPI *HARDWARE_INTERRUPT_HANDLER) (\r | |
58 | IN HARDWARE_INTERRUPT_SOURCE Source,\r | |
3402aac7 | 59 | IN EFI_SYSTEM_CONTEXT SystemContext\r |
2ef2b01e A |
60 | );\r |
61 | \r | |
62 | \r | |
63 | /**\r | |
64 | Register Handler for the specified interrupt source.\r | |
65 | \r | |
66 | @param This Instance pointer for this protocol\r | |
67 | @param Source Hardware source of the interrupt\r | |
68 | @param Handler Callback for interrupt. NULL to unregister\r | |
69 | \r | |
70 | @retval EFI_SUCCESS Source was updated to support Handler.\r | |
71 | @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r | |
72 | \r | |
73 | **/\r | |
74 | typedef\r | |
75 | EFI_STATUS\r | |
76 | (EFIAPI *HARDWARE_INTERRUPT_REGISTER) (\r | |
77 | IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r | |
78 | IN HARDWARE_INTERRUPT_SOURCE Source,\r | |
79 | IN HARDWARE_INTERRUPT_HANDLER Handler\r | |
80 | );\r | |
81 | \r | |
82 | \r | |
83 | /**\r | |
84 | Enable interrupt source Source.\r | |
85 | \r | |
86 | @param This Instance pointer for this protocol\r | |
87 | @param Source Hardware source of the interrupt\r | |
88 | \r | |
89 | @retval EFI_SUCCESS Source interrupt enabled.\r | |
90 | @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r | |
91 | \r | |
92 | **/\r | |
93 | typedef\r | |
94 | EFI_STATUS\r | |
95 | (EFIAPI *HARDWARE_INTERRUPT_ENABLE) (\r | |
96 | IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r | |
97 | IN HARDWARE_INTERRUPT_SOURCE Source\r | |
98 | );\r | |
99 | \r | |
100 | \r | |
101 | \r | |
102 | /**\r | |
103 | Disable interrupt source Source.\r | |
104 | \r | |
105 | @param This Instance pointer for this protocol\r | |
106 | @param Source Hardware source of the interrupt\r | |
107 | \r | |
108 | @retval EFI_SUCCESS Source interrupt disabled.\r | |
109 | @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r | |
110 | \r | |
111 | **/\r | |
112 | typedef\r | |
113 | EFI_STATUS\r | |
114 | (EFIAPI *HARDWARE_INTERRUPT_DISABLE) (\r | |
115 | IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r | |
116 | IN HARDWARE_INTERRUPT_SOURCE Source\r | |
117 | );\r | |
118 | \r | |
119 | \r | |
120 | /**\r | |
121 | Return current state of interrupt source Source.\r | |
122 | \r | |
123 | @param This Instance pointer for this protocol\r | |
124 | @param Source Hardware source of the interrupt\r | |
125 | @param InterruptState TRUE: source enabled, FALSE: source disabled.\r | |
126 | \r | |
127 | @retval EFI_SUCCESS InterruptState is valid\r | |
128 | @retval EFI_DEVICE_ERROR InterruptState is not valid\r | |
129 | \r | |
130 | **/\r | |
131 | typedef\r | |
132 | EFI_STATUS\r | |
133 | (EFIAPI *HARDWARE_INTERRUPT_INTERRUPT_STATE) (\r | |
134 | IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r | |
135 | IN HARDWARE_INTERRUPT_SOURCE Source,\r | |
3402aac7 | 136 | IN BOOLEAN *InterruptState\r |
753816a3 | 137 | );\r |
138 | \r | |
139 | /**\r | |
3402aac7 | 140 | Signal to the hardware that the End Of Intrrupt state\r |
753816a3 | 141 | has been reached.\r |
142 | \r | |
143 | @param This Instance pointer for this protocol\r | |
144 | @param Source Hardware source of the interrupt\r | |
145 | \r | |
146 | @retval EFI_SUCCESS Source interrupt EOI'ed.\r | |
147 | @retval EFI_DEVICE_ERROR Hardware could not be programmed.\r | |
148 | \r | |
149 | **/\r | |
150 | typedef\r | |
151 | EFI_STATUS\r | |
152 | (EFIAPI *HARDWARE_INTERRUPT_END_OF_INTERRUPT) (\r | |
153 | IN EFI_HARDWARE_INTERRUPT_PROTOCOL *This,\r | |
154 | IN HARDWARE_INTERRUPT_SOURCE Source\r | |
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155 | );\r |
156 | \r | |
157 | \r | |
158 | struct _EFI_HARDWARE_INTERRUPT_PROTOCOL {\r | |
159 | HARDWARE_INTERRUPT_REGISTER RegisterInterruptSource;\r | |
160 | HARDWARE_INTERRUPT_ENABLE EnableInterruptSource;\r | |
161 | HARDWARE_INTERRUPT_DISABLE DisableInterruptSource;\r | |
162 | HARDWARE_INTERRUPT_INTERRUPT_STATE GetInterruptSourceState;\r | |
753816a3 | 163 | HARDWARE_INTERRUPT_END_OF_INTERRUPT EndOfInterrupt;\r |
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164 | };\r |
165 | \r | |
166 | extern EFI_GUID gHardwareInterruptProtocolGuid;\r | |
167 | \r | |
168 | #endif\r | |
169 | \r | |
170 | \r |