1 /* $NetBSD: i80321_intr.h,v 1.11 2014/02/04 18:51:16 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002, 2006 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe and Steve C. Woodford 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 _I80321_INTR_H_ 39 #ifndef _NO_INTR_H_ 40 #define _I80321_INTR_H_ 41 42 #define ARM_IRQ_HANDLER _C_LABEL(i80321_intr_dispatch) 43 44 #ifndef _LOCORE 45 46 #include <arm/armreg.h> 47 #include <arm/cpufunc.h> 48 #include <arm/cpu.h> 49 50 #include <arm/xscale/i80321reg.h> 51 52 #ifdef __PROG32 53 static inline void __attribute__((__unused__)) 54 i80321_set_intrmask(void) 55 { 56 extern volatile uint32_t intr_enabled; 57 58 __asm volatile("mcr p6, 0, %0, c0, c0, 0" 59 : 60 : "r" (intr_enabled & ICU_INT_HWMASK)); 61 } 62 63 #define INT_HPIMASK (1u << ICU_INT_HPI) 64 extern volatile uint32_t intr_enabled; 65 extern volatile int i80321_ipending; 66 extern int i80321_imask[]; 67 68 static inline void __attribute__((__unused__)) 69 i80321_splx(int new) 70 { 71 int oldirqstate, hwpend; 72 73 /* Don't let the compiler re-order this code with preceding code */ 74 __insn_barrier(); 75 76 set_curcpl(new); 77 78 hwpend = (i80321_ipending & ICU_INT_HWMASK) & ~i80321_imask[new]; 79 if (hwpend != 0) { 80 oldirqstate = disable_interrupts(I32_bit); 81 intr_enabled |= hwpend; 82 i80321_set_intrmask(); 83 #ifdef I80321_HPI_ENABLED 84 if (__predict_false(hwpend & INT_HPIMASK)) 85 oldirqstate &= ~I32_bit; 86 #endif 87 restore_interrupts(oldirqstate); 88 } 89 90 #ifdef __HAVE_FAST_SOFTINTS 91 cpu_dosoftints(); 92 #endif 93 } 94 95 static inline int __attribute__((__unused__)) 96 i80321_splraise(int ipl) 97 { 98 int old = curcpl(); 99 set_curcpl(ipl); 100 101 /* Don't let the compiler re-order this code with subsequent code */ 102 __insn_barrier(); 103 104 return (old); 105 } 106 107 static inline int __attribute__((__unused__)) 108 i80321_spllower(int ipl) 109 { 110 int old = curcpl(); 111 i80321_splx(ipl); 112 return(old); 113 } 114 115 #endif /* __PROG32 */ 116 117 #if !defined(EVBARM_SPL_NOINLINE) 118 119 #define splx(new) i80321_splx(new) 120 #define _spllower(ipl) i80321_spllower(ipl) 121 #define _splraise(ipl) i80321_splraise(ipl) 122 123 #else 124 125 int _splraise(int); 126 int _spllower(int); 127 void splx(int); 128 129 #endif /* ! EVBARM_SPL_NOINLINE */ 130 131 #endif /* _LOCORE */ 132 133 #endif /* _NO_INTR_H_ */ 134 #endif /* _I80321_INTR_H_ */ 135