d7e78fcfd1
Switch to 8KB pages on CPUs with a R4K MMU. Simplify cache code. Merge in most of changes from matt-mips64 branch
220 lines
6.9 KiB
C
220 lines
6.9 KiB
C
/* $NetBSD: vmparam.h,v 1.55 2016/07/11 16:15:35 matt Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: vmparam.h 1.16 91/01/18
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*
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* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
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*/
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#ifndef _MIPS_VMPARAM_H_
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#define _MIPS_VMPARAM_H_
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#ifdef _KERNEL_OPT
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#include "opt_cputype.h"
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#include "opt_multiprocessor.h"
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#include "opt_modular.h"
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#endif
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/*
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* Machine dependent VM constants for MIPS.
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*/
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#if !defined(_RUMPKERNEL) && (defined(MODULAR) || defined(_MODULE))
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#define MAX_PAGE_SIZE 16384
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#define MIN_PAGE_SIZE 4096
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#endif
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/*
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* We normally use a 4K page but may use 16K on MIPS systems.
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* Override PAGE_* definitions to compile-time constants.
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*/
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#ifdef ENABLE_MIPS_16KB_PAGE
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#define PAGE_SHIFT 14
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#elif defined(ENABLE_MIPS_8KB_PAGE) \
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|| (!defined(ENABLE_MIPS_4KB_PAGE) && __mips >= 3)
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#define PAGE_SHIFT 13
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#else /* defined(ENABLE_MIPS_4KB_PAGE) */
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#define PAGE_SHIFT 12
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#endif
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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/*
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* USRSTACK is the top (end) of the user stack.
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*
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* USRSTACK needs to start a little below 0x8000000 because the R8000
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* and some QED CPUs perform some virtual address checks before the
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* offset is calculated. We use 0x8000 since that's the max displacement
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* in an instruction.
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*/
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#define USRSTACK (VM_MAXUSER_ADDRESS-0x8000) /* Start of user stack */
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#define USRSTACK32 ((uint32_t)VM_MAXUSER32_ADDRESS-0x8000)
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/*
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* Virtual memory related constants, all in bytes
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*/
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#if defined(__mips_o32)
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#ifndef MAXTSIZ
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#define MAXTSIZ (64*1024*1024) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (128*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (512*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (4*1024*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (32*1024*1024) /* max stack size */
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#endif
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#else
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/*
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* 64-bit ABIs need more space.
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*/
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#ifndef MAXTSIZ
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#define MAXTSIZ (128*1024*1024) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (256*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (1536*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (16*1024*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (120*1024*1024) /* max stack size */
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#endif
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#endif /* !__mips_o32 */
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/*
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* Virtual memory related constants, all in bytes
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*/
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#ifndef MAXTSIZ32
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#define MAXTSIZ32 MAXTSIZ /* max text size */
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#endif
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#ifndef DFLDSIZ32
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#define DFLDSIZ32 DFLDSIZ /* initial data size limit */
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#endif
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#ifndef MAXDSIZ32
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#define MAXDSIZ32 MAXDSIZ /* max data size */
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#endif
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#ifndef DFLSSIZ32
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#define DFLSSIZ32 DFLTSIZ /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ32
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#define MAXSSIZ32 MAXSSIZ /* max stack size */
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#endif
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/*
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* PTEs for mapping user space into the kernel for phyio operations.
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* The default PTE number is enough to cover 8 disks * MAXBSIZE.
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*/
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#ifndef USRIOSIZE
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#define USRIOSIZE (MAXBSIZE/PAGE_SIZE * 8)
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#endif
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/*
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* Mach derived constants
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*/
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/*
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* user/kernel map constants
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* These are negative addresses since MIPS addresses are signed.
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*/
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#define VM_MIN_ADDRESS ((vaddr_t)0x00000000)
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#ifdef _LP64
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#define MIPS_VM_MAXUSER_ADDRESS ((vaddr_t) 1L << (4*PGSHIFT-8))
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#ifdef ENABLE_MIPS_16KB_PAGE
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#define VM_MAXUSER_ADDRESS mips_vm_maxuser_address
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#else
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#define VM_MAXUSER_ADDRESS MIPS_VM_MAXUSER_ADDRESS
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#endif
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/* 0x0000010000000000 */
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 3L << 62) /* 0xC000000000000000 */
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -1L << 31) /* 0xFFFFFFFF80000000 */
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#else
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#define VM_MAXUSER_ADDRESS ((vaddr_t)-0x7fffffff-1)/* 0xFFFFFFFF80000000 */
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#define VM_MAX_ADDRESS ((vaddr_t)-0x7fffffff-1)/* 0xFFFFFFFF80000000 */
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)-0x40000000) /* 0xFFFFFFFFC0000000 */
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#ifdef ENABLE_MIPS_TX3900
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-0x01000000) /* 0xFFFFFFFFFF000000 */
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#else
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-0x00004000) /* 0xFFFFFFFFFFFFC000 */
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#endif
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#endif
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#define VM_MAXUSER32_ADDRESS ((vaddr_t)(1UL << 31))/* 0x0000000080000000 */
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/*
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* The address to which unspecified mapping requests default
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*/
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#define __USE_TOPDOWN_VM
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#define VM_DEFAULT_ADDRESS_TOPDOWN(da, sz) \
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trunc_page(USRSTACK - MAXSSIZ - (sz))
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#define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \
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round_page((vaddr_t)(da) + (vsize_t)maxdmap)
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#define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \
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trunc_page(USRSTACK32 - MAXSSIZ32 - (sz))
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#define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \
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round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32)
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
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/* VM_PHYSSEG_MAX defined by platform-dependent code. */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
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#define VM_PHYSSEG_NOADD /* can add RAM after vm_mem_init */
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#ifndef VM_NFREELIST
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#define VM_NFREELIST 16 /* 16 distinct memory segments */
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#define VM_FREELIST_DEFAULT 0
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#define VM_FREELIST_MAX 1
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#endif
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#ifdef _KERNEL
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#define UVM_KM_VMFREELIST mips_poolpage_vmfreelist
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extern int mips_poolpage_vmfreelist;
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#ifdef ENABLE_MIPS_16KB_PAGE
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extern vaddr_t mips_vm_maxuser_address;
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#endif
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#endif
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#endif /* ! _MIPS_VMPARAM_H_ */
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