text: /*-
   * Copyright (c) 1990 The Regents of the University of California.
   * All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * William Jolitz.
   *
   * 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 REGENTS 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 REGENTS 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.
   *
   *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
   * $FreeBSD: releng/11.0/sys/riscv/include/param.h 295972 2016-02-24 16:50:34Z br $
   */
  
  #ifndef _MACHINE_PARAM_H_
  #define	_MACHINE_PARAM_H_
  
  /*
   * Machine dependent constants for RISC-V.
   */
  
  #include <machine/_align.h>
  
  #define	STACKALIGNBYTES	(16 - 1)
  #define	STACKALIGN(p)	((uint64_t)(p) & ~STACKALIGNBYTES)
  
  #ifndef MACHINE
  #define	MACHINE		"riscv"
  #endif
  #ifndef MACHINE_ARCH
  #define	MACHINE_ARCH	"riscv64"
  #endif
  
  #if defined(SMP) || defined(KLD_MODULE)
  #ifndef MAXCPU
  #define	MAXCPU		16
  #endif
  #else
  #define	MAXCPU		1
  #endif /* SMP || KLD_MODULE */
  
  #ifndef MAXMEMDOM
  #define	MAXMEMDOM	1
  #endif
  
  #define	ALIGNBYTES	_ALIGNBYTES
  #define	ALIGN(p)	_ALIGN(p)
  /*
   * ALIGNED_POINTER is a boolean macro that checks whether an address
   * is valid to fetch data elements of type t from on this architecture.
   * This does not reflect the optimal alignment, just the possibility
   * (within reasonable limits).
   */
  #define	ALIGNED_POINTER(p, t)	((((u_long)(p)) & (sizeof(t) - 1)) == 0)
  
  /*
   * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
   * architecture.  It should be used with appropriate caution.
   */
  #define	CACHE_LINE_SHIFT	6
  #define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
  
  #define	PAGE_SHIFT	12
  #define	PAGE_SIZE	(1 << PAGE_SHIFT)	/* Page size */
  #define	PAGE_MASK	(PAGE_SIZE - 1)
  
  #define	MAXPAGESIZES	1		/* maximum number of supported page sizes */
  
  #ifndef KSTACK_PAGES
  #define	KSTACK_PAGES	4	/* pages of kernel stack (with pcb) */
  #endif
  
  #define	KSTACK_GUARD_PAGES	1	/* pages of kstack guard; 0 disables */
  #define	PCPU_PAGES		1
  
  /*
   * Mach derived conversion macros
   */
  #define	round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
  #define	trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
  
  #define	atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
  #define	ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
  
  #define	riscv_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
  #define	riscv_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
  
  #define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
  
  #endif /* !_MACHINE_PARAM_H_ */
  