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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Martin Decky |
2 | * Copyright (C) 2006 Martin Decky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
- | 29 | /** @addtogroup ppc32interrupt ppc32 |
|
- | 30 | * @ingroup interrupt |
|
- | 31 | * @{ |
|
- | 32 | */ |
|
- | 33 | /** @file |
|
- | 34 | */ |
|
- | 35 | ||
29 | #include <interrupt.h> |
36 | #include <interrupt.h> |
30 | #include <arch/interrupt.h> |
37 | #include <arch/interrupt.h> |
31 | #include <arch/types.h> |
38 | #include <arch/types.h> |
32 | #include <arch.h> |
39 | #include <arch.h> |
33 | #include <time/clock.h> |
40 | #include <time/clock.h> |
34 | #include <ipc/sysipc.h> |
41 | #include <ipc/sysipc.h> |
35 | #include <arch/drivers/pic.h> |
42 | #include <arch/drivers/pic.h> |
36 | 43 | ||
37 | 44 | ||
38 | void start_decrementer(void) |
45 | void start_decrementer(void) |
39 | { |
46 | { |
40 | asm volatile ( |
47 | asm volatile ( |
41 | "mtdec %0\n" |
48 | "mtdec %0\n" |
42 | : |
49 | : |
43 | : "r" (1000) |
50 | : "r" (1000) |
44 | ); |
51 | ); |
45 | } |
52 | } |
46 | 53 | ||
47 | 54 | ||
48 | /** Handler of external interrupts */ |
55 | /** Handler of external interrupts */ |
49 | static void exception_external(int n, istate_t *istate) |
56 | static void exception_external(int n, istate_t *istate) |
50 | { |
57 | { |
51 | int inum; |
58 | int inum; |
52 | 59 | ||
53 | while ((inum = pic_get_pending()) != -1) { |
60 | while ((inum = pic_get_pending()) != -1) { |
54 | exc_dispatch(inum + INT_OFFSET, istate); |
61 | exc_dispatch(inum + INT_OFFSET, istate); |
55 | pic_ack_interrupt(inum); |
62 | pic_ack_interrupt(inum); |
56 | } |
63 | } |
57 | } |
64 | } |
58 | 65 | ||
59 | 66 | ||
60 | static void exception_decrementer(int n, istate_t *istate) |
67 | static void exception_decrementer(int n, istate_t *istate) |
61 | { |
68 | { |
62 | clock(); |
69 | clock(); |
63 | start_decrementer(); |
70 | start_decrementer(); |
64 | } |
71 | } |
65 | 72 | ||
66 | 73 | ||
67 | /* Initialize basic tables for exception dispatching */ |
74 | /* Initialize basic tables for exception dispatching */ |
68 | void interrupt_init(void) |
75 | void interrupt_init(void) |
69 | { |
76 | { |
70 | exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill); |
77 | exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill); |
71 | exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill); |
78 | exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill); |
72 | exc_register(VECTOR_EXTERNAL, "external", exception_external); |
79 | exc_register(VECTOR_EXTERNAL, "external", exception_external); |
73 | exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer); |
80 | exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer); |
74 | } |
81 | } |
75 | 82 | ||
76 | 83 | ||
77 | static void ipc_int(int n, istate_t *istate) |
84 | static void ipc_int(int n, istate_t *istate) |
78 | { |
85 | { |
79 | ipc_irq_send_notif(n - INT_OFFSET); |
86 | ipc_irq_send_notif(n - INT_OFFSET); |
80 | } |
87 | } |
81 | 88 | ||
82 | 89 | ||
83 | /* Reregister irq to be IPC-ready */ |
90 | /* Reregister irq to be IPC-ready */ |
84 | void irq_ipc_bind_arch(__native irq) |
91 | void irq_ipc_bind_arch(__native irq) |
85 | { |
92 | { |
86 | int_register(irq, "ipc_int", ipc_int); |
93 | int_register(irq, "ipc_int", ipc_int); |
87 | } |
94 | } |
- | 95 | ||
- | 96 | /** @} |
|
- | 97 | */ |
|
- | 98 | ||
88 | 99 |