1 /* $NetBSD: becc_intr.h,v 1.4 2008/04/27 18:58:45 matt Exp $ */ 2 3 /* 4 * Copyright (c) 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 _BECC_INTR_H_ 39 #define _BECC_INTR_H_ 40 41 #include <arm/armreg.h> 42 #include <arm/cpufunc.h> 43 #include <arm/cpu.h> 44 45 #include <arm/xscale/beccreg.h> 46 #include <arm/xscale/becc_csrvar.h> 47 48 #ifdef __PROG32 49 static inline void __attribute__((__unused__)) 50 becc_set_intrmask(void) 51 { 52 extern volatile uint32_t intr_enabled; 53 54 /* 55 * The bits in the ICMR indicate which interrupts are masked 56 * (disabled), so we must invert our intr_enabled mask. 57 */ 58 59 BECC_CSR_WRITE(BECC_ICMR, ~intr_enabled & ICU_VALID_MASK); 60 (void) BECC_CSR_READ(BECC_ICMR); 61 } 62 63 static inline int __attribute__((__unused__)) 64 becc_splraise(int ipl) 65 { 66 extern uint32_t becc_imask[]; 67 uint32_t old = curcpl(); 68 69 set_curcpl(old | becc_imask[ipl]); 70 71 return (old); 72 } 73 74 static inline void __attribute__((__unused__)) 75 becc_splx(int new) 76 { 77 extern volatile uint32_t intr_enabled, becc_ipending; 78 uint32_t oldirqstate, hwpend; 79 80 set_curcpl(new); 81 82 /* 83 * If there are pending HW interrupts which are being 84 * unmasked, then enable them in the ICMR register. 85 * This will cause them to come flooding in. This 86 * includes soft interrupts. 87 */ 88 hwpend = becc_ipending & ~new; 89 if (hwpend != 0) { 90 oldirqstate = disable_interrupts(I32_bit); 91 intr_enabled |= hwpend; 92 becc_set_intrmask(); 93 restore_interrupts(oldirqstate); 94 } 95 } 96 97 static inline int __attribute__((__unused__)) 98 becc_spllower(int ipl) 99 { 100 extern uint32_t becc_imask[]; 101 uint32_t old = curcpl(); 102 103 becc_splx(becc_imask[ipl]); 104 return (old); 105 } 106 107 #ifdef __HAVE_FAST_SOFTINTS 108 static inline void __attribute__((__unused__)) 109 becc_setsoftintr(int si) 110 { 111 extern volatile uint32_t becc_sipending; 112 113 becc_sipending |= (1 << si); 114 BECC_CSR_WRITE(BECC_ICSR, (1U << ICU_SOFT)); 115 } 116 #endif /* __PROG32 */ 117 118 int becc_softint(void *arg); 119 #endif 120 121 #if !defined(EVBARM_SPL_NOINLINE) 122 123 #define _splraise(ipl) becc_splraise(ipl) 124 #define splx(new) becc_splx(new) 125 #define _spllower(ipl) becc_spllower(ipl) 126 #ifdef __HAVE_FAST_SOFTINTS 127 #define _setsoftintr(si) becc_setsoftintr(si) 128 #endif 129 130 #else 131 132 int _splraise(int); 133 void splx(int); 134 int _spllower(int); 135 #ifdef __HAVE_FAST_SOFTINTS 136 void _setsoftintr(int); 137 #endif 138 139 #endif /* ! EVBARM_SPL_NOINLINE */ 140 141 #endif /* _BECC_INTR_H_ */ 142