Rev 3829 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1480 | palkovsky | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Ondrej Palkovsky |
| 1480 | palkovsky | 3 | * All rights reserved. |
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 4311 | decky | 29 | /** @addtogroup ppc32 |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 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> |
||
| 40 | |||
| 3829 | decky | 41 | static volatile uint32_t *pic = NULL; |
| 1480 | palkovsky | 42 | |
| 4311 | decky | 43 | void pic_init(uintptr_t base, size_t size, cir_t *cir, void **cir_arg) |
| 1480 | palkovsky | 44 | { |
| 1780 | jermar | 45 | pic = (uint32_t *) hw_map(base, size); |
| 4311 | decky | 46 | *cir = pic_ack_interrupt; |
| 47 | *cir_arg = NULL; |
||
| 1480 | palkovsky | 48 | } |
| 49 | |||
| 4311 | decky | 50 | void pic_enable_interrupt(inr_t intnum) |
| 1480 | palkovsky | 51 | { |
| 3829 | decky | 52 | if (pic) { |
| 53 | if (intnum < 32) |
||
| 54 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] | (1 << intnum); |
||
| 55 | else |
||
| 56 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] | (1 << (intnum - 32)); |
||
| 1480 | palkovsky | 57 | } |
| 58 | |||
| 59 | } |
||
| 60 | |||
| 4311 | decky | 61 | void pic_disable_interrupt(inr_t intnum) |
| 1480 | palkovsky | 62 | { |
| 3829 | decky | 63 | if (pic) { |
| 64 | if (intnum < 32) |
||
| 65 | pic[PIC_MASK_LOW] = pic[PIC_MASK_LOW] & (~(1 << intnum)); |
||
| 66 | else |
||
| 67 | pic[PIC_MASK_HIGH] = pic[PIC_MASK_HIGH] & (~(1 << (intnum - 32))); |
||
| 1480 | palkovsky | 68 | } |
| 69 | } |
||
| 70 | |||
| 4311 | decky | 71 | void pic_ack_interrupt(void *arg, inr_t intnum) |
| 1480 | palkovsky | 72 | { |
| 3829 | decky | 73 | if (pic) { |
| 74 | if (intnum < 32) |
||
| 75 | pic[PIC_ACK_LOW] = 1 << intnum; |
||
| 76 | else |
||
| 77 | pic[PIC_ACK_HIGH] = 1 << (intnum - 32); |
||
| 78 | } |
||
| 1480 | palkovsky | 79 | } |
| 80 | |||
| 81 | /** Return number of pending interrupt */ |
||
| 82 | int pic_get_pending(void) |
||
| 83 | { |
||
| 3829 | decky | 84 | if (pic) { |
| 85 | int pending; |
||
| 86 | |||
| 87 | pending = pic[PIC_PENDING_LOW]; |
||
| 88 | if (pending) |
||
| 89 | return fnzb32(pending); |
||
| 90 | |||
| 91 | pending = pic[PIC_PENDING_HIGH]; |
||
| 92 | if (pending) |
||
| 93 | return fnzb32(pending) + 32; |
||
| 94 | } |
||
| 1928 | decky | 95 | |
| 1480 | palkovsky | 96 | return -1; |
| 97 | } |
||
| 1702 | cejka | 98 | |
| 1888 | jermar | 99 | /** @} |
| 1702 | cejka | 100 | */ |