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|---|---|---|---|
| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2006 Ondrej Palkovsky |
2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 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 ppc32 |
29 | /** @addtogroup ppc32 |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | 35 | ||
| 36 | #include <arch/drivers/pic.h> |
36 | #include <arch/drivers/pic.h> |
| 37 | #include <mm/page.h> |
37 | #include <mm/page.h> |
| 38 | #include <byteorder.h> |
38 | #include <byteorder.h> |
| 39 | #include <bitops.h> |
39 | #include <bitops.h> |
| 40 | 40 | ||
| 41 | static volatile uint32_t *pic = NULL; |
41 | static volatile uint32_t *pic = NULL; |
| 42 | 42 | ||
| 43 | void pic_init(uintptr_t base, size_t size, cir_t *cir, void **cir_arg) |
43 | void pic_init(uintptr_t base, size_t size, cir_t *cir, void **cir_arg) |
| 44 | { |
44 | { |
| 45 | pic = (uint32_t *) hw_map(base, size); |
45 | pic = (uint32_t *) hw_map(base, size); |
| 46 | *cir = pic_ack_interrupt; |
46 | *cir = pic_ack_interrupt; |
| 47 | *cir_arg = NULL; |
47 | *cir_arg = NULL; |
| 48 | } |
48 | } |
| 49 | 49 | ||
| 50 | void pic_enable_interrupt(inr_t intnum) |
50 | void pic_enable_interrupt(inr_t intnum) |
| 51 | { |
51 | { |
| 52 | if (pic) { |
52 | if (pic) { |
| 53 | if (intnum < 32) |
53 | if (intnum < 32) |
| 54 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] | (1 << intnum); |
54 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] | (1 << intnum); |
| 55 | else |
55 | else |
| 56 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] | (1 << (intnum - 32)); |
56 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] | (1 << (intnum - 32)); |
| 57 | } |
57 | } |
| 58 | 58 | ||
| 59 | } |
59 | } |
| 60 | 60 | ||
| 61 | void pic_disable_interrupt(inr_t intnum) |
61 | void pic_disable_interrupt(inr_t intnum) |
| 62 | { |
62 | { |
| 63 | if (pic) { |
63 | if (pic) { |
| 64 | if (intnum < 32) |
64 | if (intnum < 32) |
| 65 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] & (~(1 << intnum)); |
65 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] & (~(1 << intnum)); |
| 66 | else |
66 | else |
| 67 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] & (~(1 << (intnum - 32))); |
67 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] & (~(1 << (intnum - 32))); |
| 68 | } |
68 | } |
| 69 | } |
69 | } |
| 70 | 70 | ||
| 71 | void pic_ack_interrupt(void *arg, inr_t intnum) |
71 | void pic_ack_interrupt(void *arg, inr_t intnum) |
| 72 | { |
72 | { |
| 73 | if (pic) { |
73 | if (pic) { |
| 74 | if (intnum < 32) |
74 | if (intnum < 32) |
| 75 | pic[PIC_ACK_LOW] = 1 << intnum; |
75 | pic[PIC_ACK_LOW] = 1 << intnum; |
| 76 | else |
76 | else |
| 77 | pic[PIC_ACK_HIGH] = 1 << (intnum - 32); |
77 | pic[PIC_ACK_HIGH] = 1 << (intnum - 32); |
| 78 | } |
78 | } |
| 79 | } |
79 | } |
| 80 | 80 | ||
| 81 | /** Return number of pending interrupt */ |
81 | /** Return number of pending interrupt */ |
| 82 | int pic_get_pending(void) |
82 | int pic_get_pending(void) |
| 83 | { |
83 | { |
| 84 | if (pic) { |
84 | if (pic) { |
| 85 | int pending; |
85 | int pending; |
| 86 | 86 | ||
| 87 | pending = pic[PIC_PENDING_LOW]; |
87 | pending = pic[PIC_PENDING_LOW]; |
| 88 | if (pending) |
88 | if (pending) |
| 89 | return fnzb32(pending); |
89 | return fnzb32(pending); |
| 90 | 90 | ||
| 91 | pending = pic[PIC_PENDING_HIGH]; |
91 | pending = pic[PIC_PENDING_HIGH]; |
| 92 | if (pending) |
92 | if (pending) |
| 93 | return fnzb32(pending) + 32; |
93 | return fnzb32(pending) + 32; |
| 94 | } |
94 | } |
| 95 | 95 | ||
| 96 | return -1; |
96 | return -1; |
| 97 | } |
97 | } |
| 98 | 98 | ||
| 99 | /** @} |
99 | /** @} |
| 100 | */ |
100 | */ |
| 101 | 101 | ||