ixp425_intr.h revision 164426
1164426Ssam/* $NetBSD: ixp425_intr.h,v 1.6 2005/12/24 20:06:52 perry Exp $ */ 2164426Ssam 3164426Ssam/* 4164426Ssam * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5164426Ssam * All rights reserved. 6164426Ssam * 7164426Ssam * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8164426Ssam * 9164426Ssam * Redistribution and use in source and binary forms, with or without 10164426Ssam * modification, are permitted provided that the following conditions 11164426Ssam * are met: 12164426Ssam * 1. Redistributions of source code must retain the above copyright 13164426Ssam * notice, this list of conditions and the following disclaimer. 14164426Ssam * 2. Redistributions in binary form must reproduce the above copyright 15164426Ssam * notice, this list of conditions and the following disclaimer in the 16164426Ssam * documentation and/or other materials provided with the distribution. 17164426Ssam * 3. All advertising materials mentioning features or use of this software 18164426Ssam * must display the following acknowledgement: 19164426Ssam * This product includes software developed for the NetBSD Project by 20164426Ssam * Wasabi Systems, Inc. 21164426Ssam * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22164426Ssam * or promote products derived from this software without specific prior 23164426Ssam * written permission. 24164426Ssam * 25164426Ssam * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26164426Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27164426Ssam * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28164426Ssam * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29164426Ssam * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30164426Ssam * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31164426Ssam * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32164426Ssam * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33164426Ssam * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34164426Ssam * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35164426Ssam * POSSIBILITY OF SUCH DAMAGE. 36164426Ssam * 37164426Ssam * $FreeBSD: head/sys/arm/xscale/ixp425/ixp425_intr.h 164426 2006-11-19 23:55:23Z sam $ 38164426Ssam * 39164426Ssam */ 40164426Ssam 41164426Ssam#ifndef _IXP425_INTR_H_ 42164426Ssam#define _IXP425_INTR_H_ 43164426Ssam 44164426Ssam#define ARM_IRQ_HANDLER _C_LABEL(ixp425_intr_dispatch) 45164426Ssam 46164426Ssam#ifndef _LOCORE 47164426Ssam 48164426Ssam#include <machine/armreg.h> 49164426Ssam#include <machine/cpufunc.h> 50164426Ssam 51164426Ssam#include <arm/xscale/ixp425/ixp425reg.h> 52164426Ssam 53164426Ssam#define IXPREG(reg) *((__volatile u_int32_t*) (reg)) 54164426Ssam 55164426Ssamvoid ixp425_do_pending(void); 56164426Ssam 57164426Ssamextern __volatile uint32_t intr_enabled; 58164426Ssamextern uint32_t intr_steer; 59164426Ssam 60164426Ssamstatic __inline void __attribute__((__unused__)) 61164426Ssamixp425_set_intrmask(void) 62164426Ssam{ 63164426Ssam IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK; 64164426Ssam} 65164426Ssam 66164426Ssamstatic __inline void 67164426Ssamixp425_set_intrsteer(void) 68164426Ssam{ 69164426Ssam IXPREG(IXP425_INT_SELECT) = intr_steer & IXP425_INT_HWMASK; 70164426Ssam} 71164426Ssam 72164426Ssam#define INT_SWMASK \ 73164426Ssam ((1U << IXP425_INT_bit31) | (1U << IXP425_INT_bit30) | \ 74164426Ssam (1U << IXP425_INT_bit14) | (1U << IXP425_INT_bit11)) 75164426Ssam 76164426Ssam#if 0 77164426Ssamstatic __inline void __attribute__((__unused__)) 78164426Ssamixp425_splx(int new) 79164426Ssam{ 80164426Ssam extern __volatile uint32_t intr_enabled; 81164426Ssam extern __volatile int current_spl_level; 82164426Ssam extern __volatile int ixp425_ipending; 83164426Ssam extern void ixp425_do_pending(void); 84164426Ssam int oldirqstate, hwpend; 85164426Ssam 86164426Ssam /* Don't let the compiler re-order this code with preceding code */ 87164426Ssam __insn_barrier(); 88164426Ssam 89164426Ssam current_spl_level = new; 90164426Ssam 91164426Ssam hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~new; 92164426Ssam if (hwpend != 0) { 93164426Ssam oldirqstate = disable_interrupts(I32_bit); 94164426Ssam intr_enabled |= hwpend; 95164426Ssam ixp425_set_intrmask(); 96164426Ssam restore_interrupts(oldirqstate); 97164426Ssam } 98164426Ssam 99164426Ssam if ((ixp425_ipending & INT_SWMASK) & ~new) 100164426Ssam ixp425_do_pending(); 101164426Ssam} 102164426Ssam 103164426Ssamstatic __inline int __attribute__((__unused__)) 104164426Ssamixp425_splraise(int ipl) 105164426Ssam{ 106164426Ssam extern __volatile int current_spl_level; 107164426Ssam extern int ixp425_imask[]; 108164426Ssam int old; 109164426Ssam 110164426Ssam old = current_spl_level; 111164426Ssam current_spl_level |= ixp425_imask[ipl]; 112164426Ssam 113164426Ssam /* Don't let the compiler re-order this code with subsequent code */ 114164426Ssam __insn_barrier(); 115164426Ssam 116164426Ssam return (old); 117164426Ssam} 118164426Ssam 119164426Ssamstatic __inline int __attribute__((__unused__)) 120164426Ssamixp425_spllower(int ipl) 121164426Ssam{ 122164426Ssam extern __volatile int current_spl_level; 123164426Ssam extern int ixp425_imask[]; 124164426Ssam int old = current_spl_level; 125164426Ssam 126164426Ssam ixp425_splx(ixp425_imask[ipl]); 127164426Ssam return(old); 128164426Ssam} 129164426Ssam 130164426Ssam#endif 131164426Ssam#if !defined(EVBARM_SPL_NOINLINE) 132164426Ssam 133164426Ssam#define splx(new) ixp425_splx(new) 134164426Ssam#define _spllower(ipl) ixp425_spllower(ipl) 135164426Ssam#define _splraise(ipl) ixp425_splraise(ipl) 136164426Ssamvoid _setsoftintr(int); 137164426Ssam 138164426Ssam#else 139164426Ssam 140164426Ssamint _splraise(int); 141164426Ssamint _spllower(int); 142164426Ssamvoid splx(int); 143164426Ssamvoid _setsoftintr(int); 144164426Ssam 145164426Ssam#endif /* ! EVBARM_SPL_NOINLINE */ 146164426Ssam 147164426Ssam#endif /* _LOCORE */ 148164426Ssam 149164426Ssam#endif /* _IXP425_INTR_H_ */ 150