6793e5b23d
Summary: Reduce the diff between AIM and Book-E even more. This also cleans up vmparam.h significantly. Reviewed by: luporl Differential Revision: https://reviews.freebsd.org/D21301
254 lines
7.2 KiB
C
254 lines
7.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_VMPARAM_H_
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#define _MACHINE_VMPARAM_H_
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#ifndef LOCORE
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#include <machine/md_var.h>
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#endif
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#define USRSTACK SHAREDPAGE
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#ifndef MAXTSIZ
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#define MAXTSIZ (1*1024*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) /* default data size */
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#endif
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#ifndef MAXDSIZ
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#ifdef __powerpc64__
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#define MAXDSIZ (32UL*1024*1024*1024) /* max data size */
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#else
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#define MAXDSIZ (1*1024*1024*1024) /* max data size */
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#endif
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (8*1024*1024) /* default stack size */
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#endif
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#ifndef MAXSSIZ
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#ifdef __powerpc64__
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#define MAXSSIZ (512*1024*1024) /* max stack size */
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#else
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#define MAXSSIZ (64*1024*1024) /* max stack size */
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#endif
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#endif
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#ifdef AIM
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#define VM_MAXUSER_ADDRESS32 0xfffff000
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#else
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#define VM_MAXUSER_ADDRESS32 0x7ffff000
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#endif
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/*
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* Would like to have MAX addresses = 0, but this doesn't (currently) work
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*/
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#ifdef __powerpc64__
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#define VM_MIN_ADDRESS 0x0000000000000000
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#define VM_MAXUSER_ADDRESS 0x3ffffffffffff000
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#define VM_MAX_ADDRESS 0xffffffffffffffff
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#define VM_MIN_KERNEL_ADDRESS 0xe000000000000000
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#define VM_MAX_KERNEL_ADDRESS 0xe0000007ffffffff
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#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS
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#else
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#define VM_MIN_ADDRESS 0
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#define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32
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#define VM_MAX_ADDRESS 0xffffffff
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#endif
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#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
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#define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE)
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#define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE
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#define KERNBASE 0x00100100 /* start of kernel virtual */
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#ifdef AIM
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#ifndef __powerpc64__
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#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT)
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#define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1)
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#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1)
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#endif
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/*
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* Use the direct-mapped BAT registers for UMA small allocs. This
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* takes pressure off the small amount of available KVA.
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*/
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#define UMA_MD_SMALL_ALLOC
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#else /* Book-E */
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/* Use the direct map for UMA small allocs on powerpc64. */
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#ifdef __powerpc64__
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#define UMA_MD_SMALL_ALLOC
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#else
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#define VM_MIN_KERNEL_ADDRESS 0xc0000000
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#define VM_MAX_KERNEL_ADDRESS 0xffffefff
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#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS
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#endif
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#endif /* AIM/E500 */
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#if !defined(LOCORE)
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struct pmap_physseg {
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struct pv_entry *pvent;
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char *attrs;
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};
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#endif
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#define VM_PHYSSEG_MAX 16
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#define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with
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* logical memory block size of 64MB.
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* For more Ram increase the lmb or this value.
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*/
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/* XXX This is non-sensical. Phys avail should hold contiguous regions. */
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#define PHYS_AVAIL_ENTRIES PHYS_AVAIL_SZ
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/*
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* The physical address space is densely populated on 32-bit systems,
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* but may not be on 64-bit ones.
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*/
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#ifdef __powerpc64__
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#define VM_PHYSSEG_SPARSE
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#else
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#define VM_PHYSSEG_DENSE
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#endif
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/*
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* Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool
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* from which physical pages are allocated and VM_FREEPOOL_DIRECT is
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* the pool from which physical pages for small UMA objects are
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* allocated.
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*/
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#define VM_NFREEPOOL 2
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#define VM_FREEPOOL_DEFAULT 0
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#define VM_FREEPOOL_DIRECT 1
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/*
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* Create one free page list.
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*/
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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/*
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* The largest allocation size is 4MB.
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*/
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#define VM_NFREEORDER 11
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/*
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* Disable superpage reservations.
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*/
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#ifndef VM_NRESERVLEVEL
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#define VM_NRESERVLEVEL 0
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#endif
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#ifndef VM_INITIAL_PAGEIN
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#define VM_INITIAL_PAGEIN 16
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#endif
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#ifndef SGROWSIZ
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#define SGROWSIZ (128UL*1024) /* amount to grow stack */
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#endif
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/*
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* How many physical pages per kmem arena virtual page.
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*/
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#ifndef VM_KMEM_SIZE_SCALE
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#define VM_KMEM_SIZE_SCALE (3)
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#endif
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/*
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* Optional floor (in bytes) on the size of the kmem arena.
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*/
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#ifndef VM_KMEM_SIZE_MIN
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#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024)
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#endif
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/*
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* Optional ceiling (in bytes) on the size of the kmem arena: 40% of the
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* usable KVA space.
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*/
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#ifndef VM_KMEM_SIZE_MAX
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#define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \
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VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5)
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#endif
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#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */
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/*
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* On 32-bit OEA, the only purpose for which sf_buf is used is to implement
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* an opaque pointer required by the machine-independent parts of the kernel.
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* That pointer references the vm_page that is "mapped" by the sf_buf. The
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* actual mapping is provided by the direct virtual-to-physical mapping.
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*
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* On OEA64 and Book-E, we need to do something a little more complicated. Use
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* the runtime-detected hw_direct_map to pick between the two cases. Our
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* friends in vm_machdep.c will do the same to ensure nothing gets confused.
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*/
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#define SFBUF
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#define SFBUF_NOMD
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/*
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* We (usually) have a direct map of all physical memory, so provide
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* a macro to use to get the kernel VA address for a given PA. Check the
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* value of PMAP_HAS_PMAP before using.
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*/
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#ifndef LOCORE
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#ifdef __powerpc64__
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#define DMAP_BASE_ADDRESS 0xc000000000000000UL
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#define DMAP_MAX_ADDRESS 0xcfffffffffffffffUL
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#else
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#define DMAP_BASE_ADDRESS 0x00000000UL
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#define DMAP_MAX_ADDRESS 0xbfffffffUL
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#endif
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#endif
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#define PMAP_HAS_DMAP (hw_direct_map)
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#define PHYS_TO_DMAP(x) ({ \
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KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \
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(x) | DMAP_BASE_ADDRESS; })
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#define DMAP_TO_PHYS(x) ({ \
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KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \
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(x) &~ DMAP_BASE_ADDRESS; })
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#endif /* _MACHINE_VMPARAM_H_ */
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