/*      $NetBSD: machdep.h,v 1.6 2025/02/02 11:04:58 skrll Exp $        */

/*-
* Copyright (c) 2022 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nick Hudson
*
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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 _RISCV_MACHDEP_H_
#define _RISCV_MACHDEP_H_

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.h,v 1.6 2025/02/02 11:04:58 skrll Exp $");

#include <sys/lwp.h>
#include <sys/proc.h>
#include <sys/siginfo.h>

static inline paddr_t
riscv_kern_vtophys(vaddr_t va)
{
       extern unsigned long kern_vtopdiff;

       return va - kern_vtopdiff;
}

static inline vaddr_t
riscv_kern_phystov(paddr_t pa)
{
       extern unsigned long kern_vtopdiff;

       return pa + kern_vtopdiff;
}

#define KERN_VTOPHYS(va)        riscv_kern_vtophys((vaddr_t)va)
#define KERN_PHYSTOV(pa)        riscv_kern_phystov((paddr_t)pa)

extern  paddr_t physical_start;
extern  paddr_t physical_end;

void    uartputc(int);
int     uartgetc(void);

paddr_t init_mmu(paddr_t);
void    init_riscv(register_t, paddr_t);

void    riscv_timer_frequency_set(uint32_t);    // which header?
uint32_t
       riscv_timer_frequency_get(void);        // which header?
void    riscv_timer_register(void (*timerfn)(void));
void    riscv_intr_set_handler(void (*intr_handler)(struct trapframe *,
           register_t, register_t, register_t));

void    riscv_timer_init(void);
int     riscv_timer_intr(void *arg);

void    pt_dump(void (*)(const char *, ...));


#endif  /* _RISCV_MACHDEP_H_ */