/* $OpenBSD: intr.h,v 1.19 2025/05/10 10:01:03 visa Exp $ */ /* * Copyright (c) 2001-2004 Opsycon AB (www.opsycon.se / www.opsycon.com) * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifndef _MACHINE_INTR_H_ #define _MACHINE_INTR_H_ #define __USE_MI_SOFTINTR #include <sys/softintr.h> /* * The interrupt level ipl is a logical level; per-platform interrupt * code will turn it into the appropriate hardware interrupt masks * values. * * Interrupt sources on the CPU are kept enabled regardless of the * current ipl value; individual hardware sources interrupting while * logically masked are masked on the fly, remembered as pending, and * unmasked at the first splx() opportunity. * * An exception to this rule is the clock interrupt. Clock interrupts * are always allowed to happen, but will (of course!) not be serviced * if logically masked. The reason for this is that clocks usually sit on * INT5 and cannot be easily masked if external hardware masking is used. */ /* Interrupt priority `levels'; not mutually exclusive. */ #define IPL_NONE 0 /* nothing */ #define IPL_SOFTINT 1 /* soft interrupts */ #define IPL_SOFTCLOCK 1 /* soft clock interrupts */ #define IPL_SOFTNET 2 /* soft network interrupts */ #define IPL_SOFTTTY 3 /* soft terminal interrupts */ #define IPL_SOFTHIGH IPL_SOFTTTY /* highest level of soft interrupts */ #define IPL_BIO 4 /* block I/O */ #define IPL_AUDIO IPL_BIO #define IPL_NET 5 /* network */ #define IPL_TTY 6 /* terminal */ #define IPL_VM 7 /* memory allocation */ #define IPL_CLOCK 8 /* clock */ #define IPL_STATCLOCK IPL_CLOCK #define IPL_SCHED 9 /* everything */ #define IPL_HIGH 9 /* everything */ #define IPL_IPI 10 /* interprocessor interrupt */ #define NIPLS 11 /* number of levels */ #define IPL_MPFLOOR IPL_TTY /* Interrupt priority 'flags'. */ #define IPL_MPSAFE 0x100 /* Interrupt sharing types. */ #define IST_NONE 0 /* none */ #define IST_PULSE 1 /* pulsed */ #define IST_EDGE 2 /* edge-triggered */ #define IST_LEVEL 3 /* level-triggered */ #ifndef _LOCORE void softintr(int); #define splbio() splraise(IPL_BIO) #define splnet() splraise(IPL_NET) #define spltty() splraise(IPL_TTY) #define splaudio() splraise(IPL_AUDIO) #define splclock() splraise(IPL_CLOCK) #define splvm() splraise(IPL_VM) #define splhigh() splraise(IPL_HIGH) #define splsoftclock() splraise(IPL_SOFTCLOCK) #define splsoftnet() splraise(IPL_SOFTNET) #define splstatclock() splhigh() #define splsched() splhigh() #define spl0() spllower(0) void splinit(void); #ifdef DIAGNOSTIC /* * Although this function is implemented in MI code, it must be in this MD * header because we don't want this header to include MI includes. */ void splassert_fail(int, int, const char *); extern int splassert_ctl; void splassert_check(int, const char *); #define splassert(__wantipl) do { \ if (splassert_ctl > 0) { \ splassert_check(__wantipl, __func__); \ } \ } while (0) #define splsoftassert(wantipl) splassert(wantipl) #else #define splassert(X) #define splsoftassert(X) #endif void register_splx_handler(void (*)(int)); int splraise(int); void splx(int); int spllower(int); /* * Interrupt control struct used by interrupt dispatchers * to hold interrupt handler info. */ #include <sys/evcount.h> struct intrhand { struct intrhand *ih_next; int (*ih_fun)(void *); void *ih_arg; int ih_level; int ih_irq; int ih_flags; #define IH_MPSAFE 0x01 struct evcount ih_count; }; void intr_barrier(void *); /* * Low level interrupt dispatcher registration data. */ /* Schedule priorities for base interrupts (CPU) */ #define INTPRI_IPI 0 #define INTPRI_CLOCK 1 /* other values are system-specific */ #define NLOWINT 4 /* Number of low level registrations possible */ extern uint32_t idle_mask; struct trapframe; void set_intr(int, uint32_t, uint32_t(*)(uint32_t, struct trapframe *)); uint32_t updateimask(uint32_t); void dosoftint(void); #ifdef MULTIPROCESSOR extern uint32_t ipi_mask; #define ENABLEIPI() updateimask(~ipi_mask) #endif struct pic { void (*pic_eoi)(int); void (*pic_mask)(int); void (*pic_unmask)(int); }; #ifdef CPU_LOONGSON3 void loongson3_intr_init(void); void *loongson3_intr_establish(int, int, int (*)(void *), void*, const char *); void loongson3_intr_disestablish(void *); void *loongson3_ht_intr_establish(int, int, int (*)(void *), void*, const char *); void loongson3_ht_intr_disestablish(void *); void loongson3_register_ht_pic(const struct pic *); #endif /* CPU_LOONGSON3 */ #endif /* _LOCORE */ #endif /* _MACHINE_INTR_H_ */
