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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 | #include <interrupt.h> |
29 | #include <interrupt.h> |
| 30 | #include <arch/interrupt.h> |
30 | #include <arch/interrupt.h> |
| 31 | #include <arch/types.h> |
31 | #include <arch/types.h> |
| 32 | #include <arch.h> |
32 | #include <arch.h> |
| 33 | #include <time/clock.h> |
33 | #include <time/clock.h> |
| 34 | #include <ipc/sysipc.h> |
34 | #include <ipc/sysipc.h> |
| 35 | #include <arch/drivers/pic.h> |
35 | #include <arch/drivers/pic.h> |
| 36 | 36 | ||
| 37 | 37 | ||
| 38 | void start_decrementer(void) |
38 | void start_decrementer(void) |
| 39 | { |
39 | { |
| 40 | asm volatile ( |
40 | asm volatile ( |
| 41 | "mtdec %0\n" |
41 | "mtdec %0\n" |
| 42 | : |
42 | : |
| 43 | : "r" (1000) |
43 | : "r" (1000) |
| 44 | ); |
44 | ); |
| 45 | } |
45 | } |
| 46 | 46 | ||
| 47 | 47 | ||
| 48 | static void exception_decrementer(int n, istate_t *istate) |
48 | static void exception_decrementer(int n, istate_t *istate) |
| 49 | { |
49 | { |
| 50 | clock(); |
50 | clock(); |
| 51 | start_decrementer(); |
51 | start_decrementer(); |
| 52 | } |
52 | } |
| 53 | 53 | ||
| 54 | 54 | ||
| 55 | /* Initialize basic tables for exception dispatching */ |
55 | /* Initialize basic tables for exception dispatching */ |
| 56 | void interrupt_init(void) |
56 | void interrupt_init(void) |
| 57 | { |
57 | { |
| 58 | exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer); |
58 | exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer); |
| 59 | } |
59 | } |
| 60 | 60 | ||
| 61 | 61 | ||
| 62 | /* Reregister irq to be IPC-ready */ |
62 | /* Reregister irq to be IPC-ready */ |
| 63 | void irq_ipc_bind_arch(__native irq) |
63 | void irq_ipc_bind_arch(__native irq) |
| 64 | { |
64 | { |
| 65 | panic("not implemented\n"); |
65 | panic("not implemented\n"); |
| 66 | /* TODO */ |
66 | /* TODO */ |
| 67 | } |
67 | } |
| 68 | 68 | ||
| 69 | #include <print.h> |
- | |
| 70 | /** Handler of externul interrupts */ |
69 | /** Handler of externul interrupts */ |
| 71 | void extint_handler(int n, istate_t *istate) |
70 | void extint_handler(int n, istate_t *istate) |
| 72 | { |
71 | { |
| 73 | int inum; |
72 | int inum; |
| 74 | 73 | ||
| 75 | while ((inum = pic_get_pending()) != -1) { |
74 | while ((inum = pic_get_pending()) != -1) { |
| 76 | exc_dispatch(inum+INT_OFFSET, istate); |
75 | exc_dispatch(inum+INT_OFFSET, istate); |
| 77 | pic_ack_interrupt(inum); |
76 | pic_ack_interrupt(inum); |
| 78 | } |
77 | } |
| 79 | } |
78 | } |
| 80 | 79 | ||