i80200_icu.c revision 1.3.2.3
1 1.3.2.3 jdolecek /* $NetBSD: i80200_icu.c,v 1.3.2.3 2002/06/23 17:34:57 jdolecek Exp $ */ 2 1.3.2.2 jdolecek 3 1.3.2.2 jdolecek /* 4 1.3.2.2 jdolecek * Copyright (c) 2002 Wasabi Systems, Inc. 5 1.3.2.2 jdolecek * All rights reserved. 6 1.3.2.2 jdolecek * 7 1.3.2.2 jdolecek * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 1.3.2.2 jdolecek * 9 1.3.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 10 1.3.2.2 jdolecek * modification, are permitted provided that the following conditions 11 1.3.2.2 jdolecek * are met: 12 1.3.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 13 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 14 1.3.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 15 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 16 1.3.2.2 jdolecek * documentation and/or other materials provided with the distribution. 17 1.3.2.2 jdolecek * 3. All advertising materials mentioning features or use of this software 18 1.3.2.2 jdolecek * must display the following acknowledgement: 19 1.3.2.2 jdolecek * This product includes software developed for the NetBSD Project by 20 1.3.2.2 jdolecek * Wasabi Systems, Inc. 21 1.3.2.2 jdolecek * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.3.2.2 jdolecek * or promote products derived from this software without specific prior 23 1.3.2.2 jdolecek * written permission. 24 1.3.2.2 jdolecek * 25 1.3.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.3.2.2 jdolecek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.3.2.2 jdolecek * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.3.2.2 jdolecek * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.3.2.2 jdolecek * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.3.2.2 jdolecek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.3.2.2 jdolecek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.3.2.2 jdolecek * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.3.2.2 jdolecek * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.3.2.2 jdolecek * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.3.2.2 jdolecek * POSSIBILITY OF SUCH DAMAGE. 36 1.3.2.2 jdolecek */ 37 1.3.2.2 jdolecek 38 1.3.2.2 jdolecek /* 39 1.3.2.2 jdolecek * Intel i80200 Interrupt Controller Unit support. 40 1.3.2.2 jdolecek */ 41 1.3.2.2 jdolecek 42 1.3.2.2 jdolecek #include <sys/param.h> 43 1.3.2.2 jdolecek #include <sys/systm.h> 44 1.3.2.2 jdolecek 45 1.3.2.2 jdolecek #include <arm/cpufunc.h> 46 1.3.2.2 jdolecek 47 1.3.2.2 jdolecek #include <arm/xscale/i80200reg.h> 48 1.3.2.2 jdolecek #include <arm/xscale/i80200var.h> 49 1.3.2.2 jdolecek 50 1.3.2.2 jdolecek /* Software shadow copy of INTCTL. */ 51 1.3.2.2 jdolecek static __volatile uint32_t intctl; 52 1.3.2.2 jdolecek 53 1.3.2.2 jdolecek /* Pointer to board-specific external IRQ dispatcher. */ 54 1.3.2.2 jdolecek void (*i80200_extirq_dispatch)(struct clockframe *); 55 1.3.2.2 jdolecek 56 1.3.2.2 jdolecek static void 57 1.3.2.2 jdolecek i80200_default_extirq_dispatch(struct clockframe *framep) 58 1.3.2.2 jdolecek { 59 1.3.2.2 jdolecek 60 1.3.2.2 jdolecek panic("external IRQ with no dispatch routine"); 61 1.3.2.2 jdolecek } 62 1.3.2.2 jdolecek 63 1.3.2.2 jdolecek /* 64 1.3.2.3 jdolecek * i80200_icu_init: 65 1.3.2.2 jdolecek * 66 1.3.2.2 jdolecek * Initialize the i80200 ICU. 67 1.3.2.2 jdolecek */ 68 1.3.2.2 jdolecek void 69 1.3.2.3 jdolecek i80200_icu_init(void) 70 1.3.2.2 jdolecek { 71 1.3.2.2 jdolecek 72 1.3.2.2 jdolecek /* Disable all interrupt sources. */ 73 1.3.2.2 jdolecek intctl = 0; 74 1.3.2.2 jdolecek __asm __volatile("mcr p13, 0, %0, c0, c0" 75 1.3.2.2 jdolecek : 76 1.3.2.2 jdolecek : "r" (intctl)); 77 1.3.2.2 jdolecek 78 1.3.2.2 jdolecek /* Steer PMU and BMU to IRQ. */ 79 1.3.2.2 jdolecek __asm __volatile("mcr p13, 0, %0, c2, c0" 80 1.3.2.2 jdolecek : 81 1.3.2.2 jdolecek : "r" (0)); 82 1.3.2.2 jdolecek 83 1.3.2.2 jdolecek i80200_extirq_dispatch = i80200_default_extirq_dispatch; 84 1.3.2.2 jdolecek } 85 1.3.2.2 jdolecek 86 1.3.2.2 jdolecek /* 87 1.3.2.2 jdolecek * i80200_intr_enable: 88 1.3.2.2 jdolecek * 89 1.3.2.2 jdolecek * Enable an interrupt source in the i80200 ICU. 90 1.3.2.2 jdolecek */ 91 1.3.2.2 jdolecek void 92 1.3.2.2 jdolecek i80200_intr_enable(uint32_t intr) 93 1.3.2.2 jdolecek { 94 1.3.2.2 jdolecek u_int oldirqstate; 95 1.3.2.2 jdolecek 96 1.3.2.2 jdolecek oldirqstate = disable_interrupts(I32_bit|F32_bit); 97 1.3.2.2 jdolecek 98 1.3.2.2 jdolecek intctl |= intr; 99 1.3.2.2 jdolecek __asm __volatile("mcr p13, 0, %0, c0, c0" 100 1.3.2.2 jdolecek : 101 1.3.2.2 jdolecek : "r" (intctl)); 102 1.3.2.2 jdolecek 103 1.3.2.2 jdolecek restore_interrupts(oldirqstate); 104 1.3.2.2 jdolecek } 105 1.3.2.2 jdolecek 106 1.3.2.2 jdolecek /* 107 1.3.2.2 jdolecek * i80200_intr_disable: 108 1.3.2.2 jdolecek * 109 1.3.2.2 jdolecek * Disable an interrupt source in the i80200 ICU. 110 1.3.2.2 jdolecek */ 111 1.3.2.2 jdolecek void 112 1.3.2.2 jdolecek i80200_intr_disable(uint32_t intr) 113 1.3.2.2 jdolecek { 114 1.3.2.2 jdolecek u_int oldirqstate; 115 1.3.2.2 jdolecek 116 1.3.2.2 jdolecek oldirqstate = disable_interrupts(I32_bit|F32_bit); 117 1.3.2.2 jdolecek 118 1.3.2.2 jdolecek intctl &= ~intr; 119 1.3.2.2 jdolecek __asm __volatile("mcr p13, 0, %0, c0, c0" 120 1.3.2.2 jdolecek : 121 1.3.2.2 jdolecek : "r" (intctl)); 122 1.3.2.2 jdolecek 123 1.3.2.2 jdolecek restore_interrupts(oldirqstate); 124 1.3.2.2 jdolecek } 125
Indexes created Sat Oct 25 16:10:12 GMT 2025