ixp425_intr.h revision 164426
1/* $NetBSD: ixp425_intr.h,v 1.6 2005/12/24 20:06:52 perry Exp $ */ 2 3/* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 * 37 * $FreeBSD: head/sys/arm/xscale/ixp425/ixp425_intr.h 164426 2006-11-19 23:55:23Z sam $ 38 * 39 */ 40 41#ifndef _IXP425_INTR_H_ 42#define _IXP425_INTR_H_ 43 44#define ARM_IRQ_HANDLER _C_LABEL(ixp425_intr_dispatch) 45 46#ifndef _LOCORE 47 48#include <machine/armreg.h> 49#include <machine/cpufunc.h> 50 51#include <arm/xscale/ixp425/ixp425reg.h> 52 53#define IXPREG(reg) *((__volatile u_int32_t*) (reg)) 54 55void ixp425_do_pending(void); 56 57extern __volatile uint32_t intr_enabled; 58extern uint32_t intr_steer; 59 60static __inline void __attribute__((__unused__)) 61ixp425_set_intrmask(void) 62{ 63 IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK; 64} 65 66static __inline void 67ixp425_set_intrsteer(void) 68{ 69 IXPREG(IXP425_INT_SELECT) = intr_steer & IXP425_INT_HWMASK; 70} 71 72#define INT_SWMASK \ 73 ((1U << IXP425_INT_bit31) | (1U << IXP425_INT_bit30) | \ 74 (1U << IXP425_INT_bit14) | (1U << IXP425_INT_bit11)) 75 76#if 0 77static __inline void __attribute__((__unused__)) 78ixp425_splx(int new) 79{ 80 extern __volatile uint32_t intr_enabled; 81 extern __volatile int current_spl_level; 82 extern __volatile int ixp425_ipending; 83 extern void ixp425_do_pending(void); 84 int oldirqstate, hwpend; 85 86 /* Don't let the compiler re-order this code with preceding code */ 87 __insn_barrier(); 88 89 current_spl_level = new; 90 91 hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~new; 92 if (hwpend != 0) { 93 oldirqstate = disable_interrupts(I32_bit); 94 intr_enabled |= hwpend; 95 ixp425_set_intrmask(); 96 restore_interrupts(oldirqstate); 97 } 98 99 if ((ixp425_ipending & INT_SWMASK) & ~new) 100 ixp425_do_pending(); 101} 102 103static __inline int __attribute__((__unused__)) 104ixp425_splraise(int ipl) 105{ 106 extern __volatile int current_spl_level; 107 extern int ixp425_imask[]; 108 int old; 109 110 old = current_spl_level; 111 current_spl_level |= ixp425_imask[ipl]; 112 113 /* Don't let the compiler re-order this code with subsequent code */ 114 __insn_barrier(); 115 116 return (old); 117} 118 119static __inline int __attribute__((__unused__)) 120ixp425_spllower(int ipl) 121{ 122 extern __volatile int current_spl_level; 123 extern int ixp425_imask[]; 124 int old = current_spl_level; 125 126 ixp425_splx(ixp425_imask[ipl]); 127 return(old); 128} 129 130#endif 131#if !defined(EVBARM_SPL_NOINLINE) 132 133#define splx(new) ixp425_splx(new) 134#define _spllower(ipl) ixp425_spllower(ipl) 135#define _splraise(ipl) ixp425_splraise(ipl) 136void _setsoftintr(int); 137 138#else 139 140int _splraise(int); 141int _spllower(int); 142void splx(int); 143void _setsoftintr(int); 144 145#endif /* ! EVBARM_SPL_NOINLINE */ 146 147#endif /* _LOCORE */ 148 149#endif /* _IXP425_INTR_H_ */ 150