/*      $NetBSD: pxa2x0_intr.h,v 1.16 2023/07/13 19:42:24 riastradh Exp $ */

/* Derived from i80321_intr.h */

/*
 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
 *
 * 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 for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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 _PXA2X0_INTR_H_
#define _PXA2X0_INTR_H_

#define ARM_IRQ_HANDLER _C_LABEL(pxa2x0_irq_handler)

#ifndef _LOCORE

#include <arm/cpu.h>
#include <arm/armreg.h>
#include <arm/cpufunc.h>
#include <machine/intr.h>

#include <arm/xscale/pxa2x0reg.h>

extern vaddr_t pxaic_base;              /* Shared with pxa2x0_irq.S */
#define read_icu(offset) (*(volatile uint32_t *)(pxaic_base + (offset)))
#define write_icu(offset,value) \
 (*(volatile uint32_t *)(pxaic_base + (offset)) = (value))

extern volatile int intr_mask;
extern int pxa2x0_imask[];


/*
 * Cotulla's integrated ICU doesn't have IRQ0..7, so
 * we map software interrupts to bit 0..3
 */
static inline void
pxa2x0_setipl(int new)
{
        set_curcpl(new);
        intr_mask = pxa2x0_imask[new];
        write_icu(SAIPIC_MR, intr_mask);
}


static inline void
pxa2x0_splx(int new)
{
        int psw;

        psw = disable_interrupts(I32_bit);
        pxa2x0_setipl(new);
        restore_interrupts(psw);

#ifdef __HAVE_FAST_SOFTINTS
        cpu_dosoftints();
#endif
}


static inline int
pxa2x0_splraise(int ipl)
{
        int old, psw;

        old = curcpl();
        if (ipl > old) {
                psw = disable_interrupts(I32_bit);
                pxa2x0_setipl(ipl);
                restore_interrupts(psw);
        }

        return old;
}

static inline int
pxa2x0_spllower(int ipl)
{
        int old = curcpl();
        int psw = disable_interrupts(I32_bit);

        pxa2x0_splx(ipl);
        restore_interrupts(psw);
        return old;
}

int     _splraise(int);
int     _spllower(int);
void    splx(int);

#if !defined(EVBARM_SPL_NOINLINE)

#define splx(new)               pxa2x0_splx(new)
#define _spllower(ipl)          pxa2x0_spllower(ipl)
#define _splraise(ipl)          pxa2x0_splraise(ipl)

#endif  /* !EVBARM_SPL_NOINTR */

/*
 * This function *MUST* be called very early on in a port's
 * initarm() function, before ANY spl*() functions are called.
 *
 * The parameter is the virtual address of the PXA2x0's Interrupt
 * Controller registers.
 */
void pxa2x0_intr_bootstrap(vaddr_t);

void pxa2x0_irq_handler(void *);
void *pxa2x0_intr_establish(int irqno, int level,
                            int (*func)(void *), void *cookie);
void pxa2x0_intr_disestablish(void *cookie);
void pxa2x0_update_intr_masks(int irqno, int level);

#endif /* ! _LOCORE */

#endif /* _PXA2X0_INTR_H_ */