1 /* $NetBSD: ixp425_intr.h,v 1.8 2008/04/27 18:58:45 matt 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 38 #ifndef _IXP425_INTR_H_ 39 #define _IXP425_INTR_H_ 40 41 #define ARM_IRQ_HANDLER _C_LABEL(ixp425_intr_dispatch) 42 43 #ifndef _LOCORE 44 45 #include <arm/armreg.h> 46 #include <arm/cpufunc.h> 47 48 #include <arm/xscale/ixp425reg.h> 49 50 #define IXPREG(reg) *((volatile u_int32_t*) (reg)) 51 52 static inline void __attribute__((__unused__)) 53 ixp425_set_intrmask(void) 54 { 55 extern volatile uint32_t intr_enabled; 56 57 IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK; 58 } 59 60 static inline void __attribute__((__unused__)) 61 ixp425_splx(int ipl) 62 { 63 extern int ixp425_imask[]; 64 extern volatile uint32_t intr_enabled; 65 extern volatile int ixp425_ipending; 66 int oldirqstate, hwpend; 67 68 /* Don't let the compiler re-order this code with preceding code */ 69 __insn_barrier(); 70 71 set_curcpl(ipl); 72 73 hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~ixp425_imask[ipl]; 74 if (hwpend != 0) { 75 oldirqstate = disable_interrupts(I32_bit); 76 intr_enabled |= hwpend; 77 ixp425_set_intrmask(); 78 restore_interrupts(oldirqstate); 79 } 80 81 #ifdef __HAVE_FAST_SOFTINTS 82 cpu_dosoftints(); 83 #endif 84 } 85 86 static inline int __attribute__((__unused__)) 87 ixp425_splraise(int ipl) 88 { 89 int old = curcpl(); 90 set_curcpl(ipl); 91 92 /* Don't let the compiler re-order this code with subsequent code */ 93 __insn_barrier(); 94 95 return (old); 96 } 97 98 static inline int __attribute__((__unused__)) 99 ixp425_spllower(int ipl) 100 { 101 int old = curcpl(); 102 ixp425_splx(ipl); 103 return(old); 104 } 105 106 #if !defined(EVBARM_SPL_NOINLINE) 107 108 #define splx(new) ixp425_splx(new) 109 #define _spllower(ipl) ixp425_spllower(ipl) 110 #define _splraise(ipl) ixp425_splraise(ipl) 111 112 #else 113 114 int _splraise(int); 115 int _spllower(int); 116 void splx(int); 117 118 #endif /* ! EVBARM_SPL_NOINLINE */ 119 120 #endif /* _LOCORE */ 121 122 #endif /* _IXP425_INTR_H_ */ 123