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553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
194 lines
No EOL
6 KiB
C
Vendored
194 lines
No EOL
6 KiB
C
Vendored
/* $NetBSD: vmparam.h,v 1.19.4.1 2024/07/03 19:13:20 martin Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _AARCH64_VMPARAM_H_
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#define _AARCH64_VMPARAM_H_
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#ifdef __aarch64__
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#define __USE_TOPDOWN_VM
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/*
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* Default pager_map of 16MB is small and we have plenty of VA to burn.
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*/
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#define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024)
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/*
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* Defaults for Unified Buffer Cache parameters.
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*/
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#ifndef UBC_WINSHIFT
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#define UBC_WINSHIFT 16 /* 64kB */
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#endif
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#ifndef UBC_NWINS
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#define UBC_NWINS 4096 /* 256MB */
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#endif
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/*
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* AARCH64 supports 3 page sizes: 4KB, 16KB, 64KB. Each page table can
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* even have its own page size.
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*/
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#ifdef AARCH64_PAGE_SHIFT
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#if (1 << AARCH64_PAGE_SHIFT) & ~0x141000
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#error AARCH64_PAGE_SHIFT contains an unsupported value.
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#endif
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#define PAGE_SHIFT AARCH64_PAGE_SHIFT
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#else
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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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#if PAGE_SHIFT <= 14
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#define USPACE 32768
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#else
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#define USPACE 65536
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#endif
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#define UPAGES (USPACE >> PAGE_SHIFT)
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/*
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* USRSTACK is the top (end) of the user stack. The user VA space is a
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* 48-bit address space starting at 0. Place the stack at its top end.
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*/
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#define USRSTACK VM_MAXUSER_ADDRESS
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#ifndef MAXTSIZ
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#define MAXTSIZ (1L << 30) /* max text size (1GB) */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (1L << 36) /* max data size (64GB) */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (1L << 26) /* max stack size (64MB) */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (1L << 32) /* default data size (4GB) */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (1L << 23) /* default stack size (8MB) */
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#endif
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#define USRSTACK32 VM_MAXUSER_ADDRESS32
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#ifndef MAXDSIZ32
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#define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */
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#endif
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#ifndef MAXSSIZ32
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#define MAXSSIZ32 (64*1024*1024) /* max stack size */
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#endif
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#ifndef DFLDSIZ32
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#define DFLDSIZ32 (1L << 27) /* 32bit default data size (128MB) */
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#endif
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#ifndef DFLSSIZ32
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#define DFLSSIZ32 (1L << 21) /* 32bit default stack size (2MB) */
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#endif
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#define VM_MIN_ADDRESS ((vaddr_t) 0x0)
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#define VM_MAXUSER_ADDRESS ((vaddr_t) (1L << 48) - PAGE_SIZE)
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MAXUSER_ADDRESS32 ((vaddr_t) 0xfffff000)
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/*
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* kernel virtual space layout:
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* 0xffff_0000_0000_0000 - 64T direct mapping
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* 0xffff_4000_0000_0000 - 32T (KASAN SHADOW MAP)
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* 0xffff_6000_0000_0000 - 32T (not used)
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* 0xffff_8000_0000_0000 - 1G (EFI_RUNTIME - legacy)
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* 0xffff_8000_4000_0000 - 64T (not used)
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* 0xffff_c000_0000_0000 - 64T KERNEL VM Space (including text/data/bss)
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* (0xffff_c000_4000_0000 -1GB) KERNEL VM start of KVM
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* 0xffff_ffff_f000_0000 - 254M KERNEL_IO for pmap_devmap
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* 0xffff_ffff_ffe0_0000 - 2M RESERVED
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*/
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xffffc00000000000L)
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffffffffe00000L)
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/*
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* Reserved space for EFI runtime services (legacy)
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*/
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#define EFI_RUNTIME_VA 0xffff800000000000L
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#define EFI_RUNTIME_SIZE 0x0000000040000000L
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/*
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* last 254MB of kernel vm area (0xfffffffff0000000-0xffffffffffe00000)
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* may be used for devmap. see aarch64/pmap.c:pmap_devmap_*
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*/
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#define VM_KERNEL_IO_ADDRESS 0xfffffffff0000000L
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#define VM_KERNEL_IO_SIZE (VM_MAX_KERNEL_ADDRESS - VM_KERNEL_IO_ADDRESS)
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#define VM_KERNEL_VM_BASE (0xffffc00040000000L)
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#define VM_KERNEL_VM_SIZE (VM_KERNEL_IO_ADDRESS - VM_KERNEL_VM_BASE)
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/* virtual sizes (bytes) for various kernel submaps */
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#define USRIOSIZE (PAGE_SIZE / 8)
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#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE)
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#define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \
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trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size)
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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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/*
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* Since we have the address space, we map all of physical memory (RAM)
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* using block page table entries.
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*/
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#define AARCH64_DIRECTMAP_MASK ((vaddr_t) 0xffff000000000000L)
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#define AARCH64_DIRECTMAP_SIZE (1UL << 46) /* 64TB */
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#define AARCH64_DIRECTMAP_START AARCH64_DIRECTMAP_MASK
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#define AARCH64_DIRECTMAP_END (AARCH64_DIRECTMAP_START + AARCH64_DIRECTMAP_SIZE)
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#define AARCH64_KVA_P(va) (((vaddr_t) (va) & AARCH64_DIRECTMAP_MASK) != 0)
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#define AARCH64_PA_TO_KVA(pa) ((vaddr_t) ((pa) | AARCH64_DIRECTMAP_START))
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#define AARCH64_KVA_TO_PA(va) ((paddr_t) ((va) & ~AARCH64_DIRECTMAP_MASK))
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/* */
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#define VM_PHYSSEG_MAX 256 /* XXX */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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#elif defined(__arm__)
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#include <arm/vmparam.h>
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#endif /* __aarch64__/__arm__ */
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#endif /* _AARCH64_VMPARAM_H_ */ |