1 /* $NetBSD: ixp425_intr.h,v 1.10 2012/11/12 18:00:38 skrll 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/cpu.h> 46 #include <arm/armreg.h> 47 #include <arm/cpufunc.h> 48 49 #include <arm/xscale/ixp425reg.h> 50 51 #define IXPREG(reg) *((volatile uint32_t*) (reg)) 52 53 static inline void __attribute__((__unused__)) 54 ixp425_set_intrmask(void) 55 { 56 extern volatile uint32_t intr_enabled; 57 58 IXPREG(IXP425_INT_ENABLE) = intr_enabled & IXP425_INT_HWMASK; 59 } 60 61 static inline void __attribute__((__unused__)) 62 ixp425_splx(int ipl) 63 { 64 extern int ixp425_imask[]; 65 extern volatile uint32_t intr_enabled; 66 extern volatile int ixp425_ipending; 67 int oldirqstate, hwpend; 68 69 /* Don't let the compiler re-order this code with preceding code */ 70 __insn_barrier(); 71 72 set_curcpl(ipl); 73 74 hwpend = (ixp425_ipending & IXP425_INT_HWMASK) & ~ixp425_imask[ipl]; 75 if (hwpend != 0) { 76 oldirqstate = disable_interrupts(I32_bit); 77 intr_enabled |= hwpend; 78 ixp425_set_intrmask(); 79 restore_interrupts(oldirqstate); 80 } 81 82 #ifdef __HAVE_FAST_SOFTINTS 83 cpu_dosoftints(); 84 #endif 85 } 86 87 static inline int __attribute__((__unused__)) 88 ixp425_splraise(int ipl) 89 { 90 int old = curcpl(); 91 set_curcpl(ipl); 92 93 /* Don't let the compiler re-order this code with subsequent code */ 94 __insn_barrier(); 95 96 return (old); 97 } 98 99 static inline int __attribute__((__unused__)) 100 ixp425_spllower(int ipl) 101 { 102 int old = curcpl(); 103 ixp425_splx(ipl); 104 return(old); 105 } 106 107 #if !defined(EVBARM_SPL_NOINLINE) 108 109 #define splx(new) ixp425_splx(new) 110 #define _spllower(ipl) ixp425_spllower(ipl) 111 #define _splraise(ipl) ixp425_splraise(ipl) 112 113 #else 114 115 int _splraise(int); 116 int _spllower(int); 117 void splx(int); 118 119 #endif /* ! EVBARM_SPL_NOINLINE */ 120 121 #endif /* _LOCORE */ 122 123 #endif /* _IXP425_INTR_H_ */ 124