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Diffstat (limited to 'sys/powerpc/include/vmparam.h')
| -rw-r--r-- | sys/powerpc/include/vmparam.h | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/sys/powerpc/include/vmparam.h b/sys/powerpc/include/vmparam.h new file mode 100644 index 000000000000..67fce74ade55 --- /dev/null +++ b/sys/powerpc/include/vmparam.h @@ -0,0 +1,327 @@ +/*- + * SPDX-License-Identifier: BSD-4-Clause + * + * Copyright (C) 1995, 1996 Wolfgang Solfrank. + * Copyright (C) 1995, 1996 TooLs GmbH. + * All rights reserved. + * + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by TooLs GmbH. + * 4. The name of TooLs GmbH may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. + * + * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $ + */ + +#ifndef _MACHINE_VMPARAM_H_ +#define _MACHINE_VMPARAM_H_ + +#ifndef LOCORE +#include <machine/md_var.h> +#endif + +#define USRSTACK SHAREDPAGE + +#ifndef MAXTSIZ +#define MAXTSIZ (1*1024*1024*1024) /* max text size */ +#endif + +#ifndef DFLDSIZ +#define DFLDSIZ (128*1024*1024) /* default data size */ +#endif + +#ifndef MAXDSIZ +#ifdef __powerpc64__ +#define MAXDSIZ (32UL*1024*1024*1024) /* max data size */ +#else +#define MAXDSIZ (1*1024*1024*1024) /* max data size */ +#endif +#endif + +#ifndef DFLSSIZ +#define DFLSSIZ (8*1024*1024) /* default stack size */ +#endif + +#ifndef MAXSSIZ +#ifdef __powerpc64__ +#define MAXSSIZ (512*1024*1024) /* max stack size */ +#else +#define MAXSSIZ (64*1024*1024) /* max stack size */ +#endif +#endif + +#ifdef AIM +#define VM_MAXUSER_ADDRESS32 0xfffff000 +#else +#define VM_MAXUSER_ADDRESS32 0x7ffff000 +#endif + +/* + * Would like to have MAX addresses = 0, but this doesn't (currently) work + */ +#ifdef __powerpc64__ +/* + * Virtual addresses of things. Derived from the page directory and + * page table indexes from pmap.h for precision. + * + * kernel map should be able to start at 0xc008000000000000 - + * but at least the functional simulator doesn't like it + * + * 0x0000000000000000 - 0x000fffffffffffff user map + * 0xc000000000000000 - 0xc007ffffffffffff direct map + * 0xc008000000000000 - 0xc00fffffffffffff kernel map + * + */ +#define VM_MIN_ADDRESS 0x0000000000000000 +#define VM_MAXUSER_ADDRESS 0x000fffffc0000000 +#define VM_MAX_ADDRESS 0xc00fffffffffffff +#define VM_MIN_KERNEL_ADDRESS 0xc008000000000000 +#define VM_MAX_KERNEL_ADDRESS 0xc0080007ffffffff +#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS +#else +#define VM_MIN_ADDRESS 0 +#define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 +#define VM_MAX_ADDRESS 0xffffffff +#endif + +#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) + +#define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) +#define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE + +#define KERNBASE 0x00100100 /* start of kernel virtual */ + +#define UMA_MD_SMALL_ALLOC + +#ifdef AIM +#ifndef __powerpc64__ +#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) +#define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) +#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) +#endif + +/* + * Use the direct-mapped BAT registers for UMA small allocs. This + * takes pressure off the small amount of available KVA. + */ +#define UMA_USE_DMAP + +#else /* Book-E */ + +/* Use the direct map for UMA small allocs on powerpc64. */ +#ifdef __powerpc64__ +#define UMA_USE_DMAP +#else +#define VM_MIN_KERNEL_ADDRESS 0xc0000000 +#define VM_MAX_KERNEL_ADDRESS 0xffffefff +#define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS +#endif + +#endif /* AIM/E500 */ + +#if !defined(LOCORE) +struct pmap_physseg { + struct pv_entry *pvent; + char *attrs; +}; +#endif + +#ifdef __powerpc64__ +#define VM_PHYSSEG_MAX 63 /* 1? */ +#else +#define VM_PHYSSEG_MAX 16 /* 1? */ +#endif + +#define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with + * logical memory block size of 64MB. + * For more Ram increase the lmb or this value. + */ + +/* XXX This is non-sensical. Phys avail should hold contiguous regions. */ +#define PHYS_AVAIL_ENTRIES PHYS_AVAIL_SZ + +/* + * The physical address space is densely populated on 32-bit systems, + * but may not be on 64-bit ones. + */ +#ifdef __powerpc64__ +#define VM_PHYSSEG_SPARSE +#else +#define VM_PHYSSEG_DENSE +#endif + +/* + * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool + * from which physical pages are allocated and VM_FREEPOOL_DIRECT is + * the pool from which physical pages for small UMA objects are + * allocated. + */ +#define VM_NFREEPOOL 2 +#define VM_FREEPOOL_DEFAULT 0 +#define VM_FREEPOOL_DIRECT 1 + +/* + * Create one free page list. + */ +#define VM_NFREELIST 1 +#define VM_FREELIST_DEFAULT 0 + +#ifdef __powerpc64__ +/* The largest allocation size is 16MB. */ +#define VM_NFREEORDER 13 +#else +/* The largest allocation size is 4MB. */ +#define VM_NFREEORDER 11 +#endif + +#ifndef VM_NRESERVLEVEL +#ifdef __powerpc64__ +/* Enable superpage reservations: 1 level. */ +#define VM_NRESERVLEVEL 1 +#else +/* Disable superpage reservations. */ +#define VM_NRESERVLEVEL 0 +#endif +#endif + +#ifndef VM_LEVEL_0_ORDER +/* Level 0 reservations consist of 512 (RPT) or 4096 (HPT) pages. */ +#define VM_LEVEL_0_ORDER vm_level_0_order +#ifndef __ASSEMBLER__ +extern int vm_level_0_order; +#endif +#endif + +#ifndef VM_LEVEL_0_ORDER_MAX +#define VM_LEVEL_0_ORDER_MAX 12 +#endif + +#ifndef VM_INITIAL_PAGEIN +#define VM_INITIAL_PAGEIN 16 +#endif + +#ifndef SGROWSIZ +#define SGROWSIZ (128UL*1024) /* amount to grow stack */ +#endif + +/* + * How many physical pages per kmem arena virtual page. + */ +#ifndef VM_KMEM_SIZE_SCALE +#define VM_KMEM_SIZE_SCALE (3) +#endif + +/* + * Optional floor (in bytes) on the size of the kmem arena. + */ +#ifndef VM_KMEM_SIZE_MIN +#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) +#endif + +/* + * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the + * usable KVA space. + */ +#ifndef VM_KMEM_SIZE_MAX +#define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ + VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) +#endif + +#ifdef __powerpc64__ +#define ZERO_REGION_SIZE (2 * 1024 * 1024) /* 2MB */ +#else +#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ +#endif + +/* + * On 32-bit OEA, the only purpose for which sf_buf is used is to implement + * an opaque pointer required by the machine-independent parts of the kernel. + * That pointer references the vm_page that is "mapped" by the sf_buf. The + * actual mapping is provided by the direct virtual-to-physical mapping. + * + * On OEA64 and Book-E, we need to do something a little more complicated. Use + * the runtime-detected hw_direct_map to pick between the two cases. Our + * friends in vm_machdep.c will do the same to ensure nothing gets confused. + */ +#define SFBUF +#define SFBUF_NOMD + +/* + * We (usually) have a direct map of all physical memory, so provide + * a macro to use to get the kernel VA address for a given PA. Check the + * value of PMAP_HAS_PMAP before using. + */ +#ifndef LOCORE +#ifdef __powerpc64__ +#define DMAP_BASE_ADDRESS 0xc000000000000000UL +#define DMAP_MIN_ADDRESS DMAP_BASE_ADDRESS +#define DMAP_MAX_ADDRESS 0xc007ffffffffffffUL +#else +#define DMAP_BASE_ADDRESS 0x00000000UL +#define DMAP_MAX_ADDRESS 0xbfffffffUL +#endif +#endif + +#if defined(__powerpc64__) || defined(BOOKE) +/* + * powerpc64 and Book-E will provide their own page array allocators. + * + * On AIM, this will allocate a single virtual array, with pages from the + * correct memory domains. + * On Book-E this will let us put the array in TLB1, removing the need for TLB + * thrashing. + * + * VM_MIN_KERNEL_ADDRESS is just a dummy. It will get set by the MMU driver. + */ +#define PA_MIN_ADDRESS VM_MIN_KERNEL_ADDRESS +#define PMAP_HAS_PAGE_ARRAY 1 +#endif + +#if defined(__powerpc64__) +/* + * Need a page dump array for minidump. + */ +#define MINIDUMP_PAGE_TRACKING 1 +#define MINIDUMP_STARTUP_PAGE_TRACKING 1 +#else +/* + * No minidump with 32-bit powerpc. + */ +#define MINIDUMP_PAGE_TRACKING 0 +#define MINIDUMP_STARTUP_PAGE_TRACKING 0 +#endif + +#define PMAP_HAS_DMAP (hw_direct_map) +#define PHYS_TO_DMAP(x) ({ \ + KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ + (x) | DMAP_BASE_ADDRESS; }) +#define DMAP_TO_PHYS(x) ({ \ + KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ + (x) &~ DMAP_BASE_ADDRESS; }) + +/* + * No non-transparent large page support in the pmap. + */ +#define PMAP_HAS_LARGEPAGES 0 + +#endif /* _MACHINE_VMPARAM_H_ */ |