1 /* $OpenBSD: intr.h,v 1.43 2009/10/01 20:19:19 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed under OpenBSD by 17 * Per Fogelstrom, Opsycon AB, Sweden for RTMX Inc, North Carolina USA. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #ifndef _POWERPC_INTR_H_ 36 #define _POWERPC_INTR_H_ 37 38 #define IPL_NONE 0 39 #define IPL_BIO 1 40 #define IPL_AUDIO IPL_BIO /* XXX - was defined this val in audio_if.h */ 41 #define IPL_NET 2 42 #define IPL_TTY 3 43 #define IPL_VM 4 44 #define IPL_CLOCK 5 45 #define IPL_HIGH 6 46 #define IPL_NUM 7 47 48 #define IST_NONE 0 49 #define IST_PULSE 1 50 #define IST_EDGE 2 51 #define IST_LEVEL 3 52 53 #if defined(_KERNEL) && !defined(_LOCORE) 54 55 #include <sys/evcount.h> 56 #include <machine/atomic.h> 57 58 #define PPC_NIRQ 66 59 #define PPC_CLK_IRQ 64 60 #define PPC_STAT_IRQ 65 61 62 int splraise(int); 63 int spllower(int); 64 void splx(int); 65 66 67 void do_pending_int(void); 68 69 extern int imask[IPL_NUM]; 70 71 /* SPL asserts */ 72 #define splassert(wantipl) /* nothing */ 73 #define splsoftassert(wantipl) /* nothing */ 74 75 #define SINTBIT(q) (31 - (q)) 76 #define SINTMASK(q) (1 << SINTBIT(q)) 77 78 #define SPL_CLOCKMASK SINTMASK(SI_NQUEUES) 79 80 /* Soft interrupt masks. */ 81 82 #define IPL_SOFTCLOCK 0 83 #define IPL_SOFTNET 1 84 #define IPL_SOFTTTY 2 85 86 #define SI_SOFTCLOCK 0 /* for IPL_SOFTCLOCK */ 87 #define SI_SOFTNET 1 /* for IPL_SOFTNET */ 88 #define SI_SOFTTTY 2 /* for IPL_SOFTTY */ 89 90 #define SINT_ALLMASK (SINTMASK(SI_SOFTCLOCK) | \ 91 SINTMASK(SI_SOFTNET) | SINTMASK(SI_SOFTTTY)) 92 #define SI_NQUEUES 3 93 94 #include <machine/mutex.h> 95 #include <sys/queue.h> 96 97 struct soft_intrhand { 98 TAILQ_ENTRY(soft_intrhand) sih_list; 99 void (*sih_func)(void *); 100 void *sih_arg; 101 struct soft_intrq *sih_siq; 102 int sih_pending; 103 }; 104 105 struct soft_intrq { 106 TAILQ_HEAD(, soft_intrhand) siq_list; 107 int siq_si; 108 struct mutex siq_mtx; 109 }; 110 111 void softintr_disestablish(void *); 112 void softintr_dispatch(int); 113 void *softintr_establish(int, void (*)(void *), void *); 114 void softintr_init(void); 115 void softintr_schedule(void *); 116 117 /* XXX For legacy software interrupts. */ 118 extern struct soft_intrhand *softnet_intrhand; 119 120 #define setsoftnet() softintr_schedule(softnet_intrhand) 121 122 #define SINT_CLOCK SINTMASK(SI_SOFTCLOCK) 123 #define SINT_NET SINTMASK(SI_SOFTNET) 124 #define SINT_TTY SINTMASK(SI_SOFTTTY) 125 126 #define splbio() splraise(imask[IPL_BIO]) 127 #define splnet() splraise(imask[IPL_NET]) 128 #define spltty() splraise(imask[IPL_TTY]) 129 #define splaudio() splraise(imask[IPL_AUDIO]) 130 #define splclock() splraise(imask[IPL_CLOCK]) 131 #define splvm() splraise(imask[IPL_VM]) 132 #define splsched() splhigh() 133 #define spllock() splhigh() 134 #define splstatclock() splhigh() 135 #define splsoftclock() splraise(SINT_CLOCK) 136 #define splsoftnet() splraise(SINT_NET|SINT_CLOCK) 137 #define splsofttty() splraise(SINT_TTY|SINT_NET|SINT_CLOCK) 138 139 #define splhigh() splraise(0xffffffff) 140 #define spl0() spllower(0) 141 142 /* 143 * Interrupt control struct used to control the ICU setup. 144 */ 145 146 struct intrhand { 147 struct intrhand *ih_next; 148 int (*ih_fun)(void *); 149 void *ih_arg; 150 struct evcount ih_count; 151 int ih_level; 152 int ih_irq; 153 const char *ih_what; 154 }; 155 extern int ppc_configed_intr_cnt; 156 #define MAX_PRECONF_INTR 16 157 extern struct intrhand ppc_configed_intr[MAX_PRECONF_INTR]; 158 void softnet(int isr); 159 160 #define PPC_IPI_NOP 0 161 #define PPC_IPI_DDB 1 162 163 void ppc_send_ipi(struct cpu_info *, int); 164 165 #endif /* _LOCORE */ 166 #endif /* _POWERPC_INTR_H_ */ 167