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/* $NetBSD: vmparam.h,v 1.55 2022/08/20 23:48:50 riastradh Exp $ */
/*-
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
* @(#)vmparam.h 5.9 (Berkeley) 5/12/91
*/
#ifndef _X86_64_VMPARAM_H_
#define _X86_64_VMPARAM_H_
#ifdef __x86_64__
#include <sys/mutex.h>
#ifdef _KERNEL_OPT
#include "opt_xen.h"
#endif
/*
* Machine dependent constants for 386.
*/
/*
* Page size on the amd64 s not variable in the traditional sense.
* We override the PAGE_* definitions to compile-time constants.
*/
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (PAGE_SIZE - 1)
/*
* Default pager_map of 16MB is awfully small. There is plenty
* of VA so use it.
*/
#define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024)
/*
* Defaults for Unified Buffer Cache parameters.
*/
#ifndef UBC_WINSHIFT
#define UBC_WINSHIFT 16 /* 64kB */
#endif
#ifndef UBC_NWINS
#define UBC_NWINS 4096 /* 256MB */
#endif
/*
* USRSTACK is the top (end) of the user stack. Immediately above the
* user stack resides the user structure, which is UPAGES long and contains
* the kernel stack.
*
* Immediately after the user structure is the page table map, and then
* kernel address space.
*/
#define USRSTACK VM_MAXUSER_ADDRESS
#define USRSTACK32 VM_MAXUSER_ADDRESS32
/*
* Virtual memory related constants, all in bytes
*/
#define MAXTSIZ (8L*1024*1024*1024) /* max text size */
#ifndef DFLDSIZ
#define DFLDSIZ (256*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (8L*1024*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (4*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (128*1024*1024) /* max stack size */
#endif
/*
* 32bit memory related constants.
*/
#ifndef DFLDSIZ32
#define DFLDSIZ32 (256*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ32
#define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ32
#define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ32
#define MAXSSIZ32 (64*1024*1024) /* max stack size */
#endif
/*
* Size of User Raw I/O map
*/
#define USRIOSIZE 300
/* User map constants */
#define VM_MIN_ADDRESS 0
#define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE)
#define VM_MAXUSER_ADDRESS32 0xfffff000
#define VM_MAX_ADDRESS 0x00007fbfdfeff000
/*
* Kernel map constants.
* MIN = VA_SIGN_NEG(L4_SLOT_KERN * NBPD_L4)
* MAX = MIN + NKL4_MAX_ENTRIES * NBPD_L4
*/
#ifndef XENPV
#define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffff800000000000
#define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000
#else
#define VM_MIN_KERNEL_ADDRESS_DEFAULT 0xffffa00000000000
#define VM_MAX_KERNEL_ADDRESS_DEFAULT 0xffffc00000000000
#endif
#if defined(_KMEMUSER) || defined(_KERNEL)
extern vaddr_t vm_min_kernel_address;
extern vaddr_t vm_max_kernel_address;
#define VM_MIN_KERNEL_ADDRESS vm_min_kernel_address
#define VM_MAX_KERNEL_ADDRESS vm_max_kernel_address
#endif
#define PDP_SIZE 1
/*
* The address to which unspecified mapping requests default
*/
#ifdef _KERNEL_OPT
#include "opt_uvm.h"
#endif
#define __USE_TOPDOWN_VM
#define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \
round_page((vaddr_t)(da) + (vsize_t)maxdmap)
#define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \
trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size)
#define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \
round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32)
/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
#define VM_PHYSSEG_MAX 64 /* 1 "hole" + 63 free lists */
#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
#define VM_NFREELIST 6
#define VM_FREELIST_DEFAULT 0
#define VM_FREELIST_FIRST1T 1
#define VM_FREELIST_FIRST64G 2
#define VM_FREELIST_FIRST4G 3
#define VM_FREELIST_FIRST1G 4
#define VM_FREELIST_FIRST16 5
#else /* !__x86_64__ */
#include <i386/vmparam.h>
#endif /* __x86_64__ */
#endif /* _X86_64_VMPARAM_H_ */
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