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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
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 <arch/drivers/tick.h> |
29 | #include <arch/drivers/tick.h> |
30 | #include <arch/interrupt.h> |
30 | #include <arch/interrupt.h> |
31 | #include <arch/asm.h> |
31 | #include <arch/asm.h> |
32 | #include <arch/register.h> |
32 | #include <arch/register.h> |
33 | #include <debug.h> |
33 | #include <debug.h> |
34 | #include <time/clock.h> |
34 | #include <time/clock.h> |
- | 35 | #include <typedefs.h> |
|
35 | 36 | ||
36 | /** Initialize tick interrupt. */ |
37 | /** Initialize tick interrupt. */ |
37 | void tick_init(void) |
38 | void tick_init(void) |
38 | { |
39 | { |
39 | tick_compare_reg_t compare; |
40 | tick_compare_reg_t compare; |
40 | 41 | ||
41 | interrupt_register(14, "tick_int", tick_interrupt); |
42 | interrupt_register(14, "tick_int", tick_interrupt); |
42 | compare.int_dis = false; |
43 | compare.int_dis = false; |
43 | compare.tick_cmpr = TICK_DELTA; |
44 | compare.tick_cmpr = TICK_DELTA; |
44 | tick_compare_write(compare.value); |
45 | tick_compare_write(compare.value); |
45 | tick_write(0); |
46 | tick_write(0); |
46 | } |
47 | } |
47 | 48 | ||
48 | /** Process tick interrupt. |
49 | /** Process tick interrupt. |
49 | * |
50 | * |
50 | * @param n Interrupt Level, 14, (can be ignored) |
51 | * @param n Interrupt Level, 14, (can be ignored) |
51 | * @param stack Stack pointer of the interrupted context. |
52 | * @param istate Interrupted state. |
52 | */ |
53 | */ |
53 | void tick_interrupt(int n, void *stack) |
54 | void tick_interrupt(int n, istate_t *istate) |
54 | { |
55 | { |
55 | softint_reg_t softint, clear; |
56 | softint_reg_t softint, clear; |
56 | 57 | ||
57 | softint.value = softint_read(); |
58 | softint.value = softint_read(); |
58 | 59 | ||
59 | /* |
60 | /* |
60 | * Make sure we are servicing interrupt_level_14 |
61 | * Make sure we are servicing interrupt_level_14 |
61 | */ |
62 | */ |
62 | ASSERT(n == 14); |
63 | ASSERT(n == 14); |
63 | 64 | ||
64 | /* |
65 | /* |
65 | * Make sure we are servicing TICK_INT. |
66 | * Make sure we are servicing TICK_INT. |
66 | */ |
67 | */ |
67 | ASSERT(softint.tick_int); |
68 | ASSERT(softint.tick_int); |
68 | 69 | ||
69 | /* |
70 | /* |
70 | * Clear tick interrupt. |
71 | * Clear tick interrupt. |
71 | */ |
72 | */ |
72 | clear.value = 0; |
73 | clear.value = 0; |
73 | clear.tick_int = 1; |
74 | clear.tick_int = 1; |
74 | clear_softint_write(clear.value); |
75 | clear_softint_write(clear.value); |
75 | 76 | ||
76 | /* |
77 | /* |
77 | * Restart counter. |
78 | * Restart counter. |
78 | */ |
79 | */ |
79 | tick_write(0); |
80 | tick_write(0); |
80 | 81 | ||
81 | clock(); |
82 | clock(); |
82 | } |
83 | } |
83 | 84 |