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| Rev | Author | Line No. | Line |
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| 1480 | palkovsky | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 1480 | palkovsky | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 1888 | jermar | 29 | /** @addtogroup ppc32 |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 1480 | palkovsky | 34 | |
| 1702 | cejka | 35 | |
| 1480 | palkovsky | 36 | #include <arch/drivers/pic.h> |
| 2089 | decky | 37 | #include <mm/page.h> |
| 1480 | palkovsky | 38 | #include <byteorder.h> |
| 39 | #include <bitops.h> |
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| 40 | |||
| 4341 | svoboda | 41 | static volatile uint32_t *pic = NULL; |
| 1480 | palkovsky | 42 | |
| 1780 | jermar | 43 | void pic_init(uintptr_t base, size_t size) |
| 1480 | palkovsky | 44 | { |
| 1780 | jermar | 45 | pic = (uint32_t *) hw_map(base, size); |
| 1480 | palkovsky | 46 | } |
| 47 | |||
| 48 | void pic_enable_interrupt(int intnum) |
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| 49 | { |
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| 4341 | svoboda | 50 | if (pic) { |
| 51 | if (intnum < 32) |
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| 52 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] | (1 << intnum); |
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| 53 | else |
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| 54 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] | (1 << (intnum - 32)); |
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| 1480 | palkovsky | 55 | } |
| 56 | |||
| 57 | } |
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| 58 | |||
| 59 | void pic_disable_interrupt(int intnum) |
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| 60 | { |
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| 4341 | svoboda | 61 | if (pic) { |
| 62 | if (intnum < 32) |
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| 63 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] & (~(1 << intnum)); |
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| 64 | else |
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| 65 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] & (~(1 << (intnum - 32))); |
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| 1480 | palkovsky | 66 | } |
| 67 | } |
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| 68 | |||
| 69 | void pic_ack_interrupt(int intnum) |
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| 70 | { |
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| 4341 | svoboda | 71 | if (pic) { |
| 72 | if (intnum < 32) |
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| 73 | pic[PIC_ACK_LOW] = 1 << intnum; |
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| 74 | else |
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| 75 | pic[PIC_ACK_HIGH] = 1 << (intnum - 32); |
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| 76 | } |
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| 1480 | palkovsky | 77 | } |
| 78 | |||
| 79 | /** Return number of pending interrupt */ |
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| 80 | int pic_get_pending(void) |
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| 81 | { |
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| 4341 | svoboda | 82 | if (pic) { |
| 83 | int pending; |
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| 84 | |||
| 85 | pending = pic[PIC_PENDING_LOW]; |
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| 86 | if (pending) |
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| 87 | return fnzb32(pending); |
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| 88 | |||
| 89 | pending = pic[PIC_PENDING_HIGH]; |
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| 90 | if (pending) |
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| 91 | return fnzb32(pending) + 32; |
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| 92 | } |
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| 1928 | decky | 93 | |
| 1480 | palkovsky | 94 | return -1; |
| 95 | } |
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| 1702 | cejka | 96 | |
| 1888 | jermar | 97 | /** @} |
| 1702 | cejka | 98 | */ |