/*      $OpenBSD: intr.h,v 1.58 2026/01/04 23:51:12 jsg Exp $ */

/*
 * Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed under OpenBSD by
 *      Per Fogelstrom, Opsycon AB, Sweden for RTMX Inc, North Carolina USA.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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 _POWERPC_INTR_H_
#define _POWERPC_INTR_H_

#define IPL_NONE        0
#define IPL_SOFTCLOCK   2
#define IPL_SOFTNET     3
#define IPL_SOFTTTY     4
#define IPL_BIO         5
#define IPL_NET         6
#define IPL_TTY         7
#define IPL_VM          8
#define IPL_AUDIO       9
#define IPL_CLOCK       10
#define IPL_SCHED       11
#define IPL_HIGH        12
#define IPL_NUM         13

#define IPL_MPFLOOR     IPL_TTY
#define IPL_MPSAFE      0x100

#define IST_NONE        0
#define IST_PULSE       1
#define IST_EDGE        2
#define IST_LEVEL       3

#define __USE_MI_SOFTINTR

#include <sys/softintr.h>

#if defined(_KERNEL) && !defined(_LOCORE)

#include <sys/evcount.h>

#define PPC_NIRQ        66
#define PPC_CLK_IRQ     64
#define PPC_STAT_IRQ    65

int     splraise(int);
int     spllower(int);
void    splx(int);

typedef int (ppc_splraise_t) (int);
typedef int (ppc_spllower_t) (int);
typedef void (ppc_splx_t) (int);

extern struct ppc_intr_func {
        ppc_splraise_t *raise;
        ppc_spllower_t *lower;
        ppc_splx_t *x;
}ppc_intr_func;

extern int ppc_smask[IPL_NUM];

void ppc_smask_init(void);
char *ppc_intr_typename(int type);

void do_pending_int(void);

/* SPL asserts */
#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(wantipl)      do { /* nada */ } while (0)
#define splsoftassert(wantipl)  do { /* nada */ } while (0)
#endif

#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 splsched()      splhigh()
#define splstatclock()  splhigh()
#define splsoftclock()  splraise(IPL_SOFTCLOCK)
#define splsoftnet()    splraise(IPL_SOFTNET)
#define splsofttty()    splraise(IPL_SOFTTTY)

#define SI_TO_IRQBIT(x) (1 << (x))

void    softintr(int);
void    dosoftint(int);

#define splhigh()       splraise(IPL_HIGH)
#define spl0()          spllower(IPL_NONE)

/*
 *      Interrupt control struct used to control the ICU setup.
 */

struct intrhand {
        TAILQ_ENTRY(intrhand) ih_list;
        int             (*ih_fun)(void *);
        void            *ih_arg;
        struct evcount  ih_count;
        int             ih_type;
        int             ih_level;
        int             ih_flags;
        int             ih_irq;
        const char      *ih_what;
};

struct intrq {
        TAILQ_HEAD(, intrhand) iq_list; /* handler list */
        int iq_ipl;                     /* IPL_ to mask while handling */
        int iq_ist;                     /* share type */
};

extern int ppc_configed_intr_cnt;
#define MAX_PRECONF_INTR 16
extern struct intrhand ppc_configed_intr[MAX_PRECONF_INTR];

void intr_barrier(void *);

#define PPC_IPI_NOP             0
#define PPC_IPI_DDB             1

void ppc_send_ipi(struct cpu_info *, int);

#endif /* _LOCORE */
#endif /* _POWERPC_INTR_H_ */