/*- * Copyright (c) 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of Allegro Networks, Inc. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #ifndef _POWERPC_OEA_VMPARAM_H_ #define _POWERPC_OEA_VMPARAM_H_ #include /* * Most of the definitions in this can be overriden by a machine-specific * vmparam.h if required. Otherwise a port can just include this file * get the right thing to happen. */ /* * OEA processors have 4K pages. Override the PAGE_* definitions * to be compile-time constants. */ #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) #ifndef USRSTACK #define USRSTACK VM_MAXUSER_ADDRESS #endif #ifndef USRSTACK32 #define USRSTACK32 VM_MAXUSER_ADDRESS32 #endif #ifndef MAXTSIZ #define MAXTSIZ (128*1024*1024) /* maximum text size */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1024*1024*1024) /* maximum data size */ #endif #ifndef MAXDSIZ32 #define MAXDSIZ32 (1024*1024*1024) /* maximum data size */ #endif #ifndef MAXSSIZ #define MAXSSIZ (32*1024*1024) /* maximum stack size */ #endif #ifndef MAXSSIZ32 #define MAXSSIZ32 (32*1024*1024) /* maximum stack size */ #endif #ifndef DFLDSIZ #define DFLDSIZ (256*1024*1024) /* default data size */ #endif #ifndef DFLDSIZ32 #define DFLSSIZ32 (256*1024*1024) #endif #ifndef DFLSSIZ #define DFLSSIZ (2*1024*1024) /* default stack size */ #endif #ifndef DFLSSIZ32 #define DFLSSIZ32 (2*1024*1024) /* default stack size */ #endif /* * Default number of pages in the user raw I/O map. */ #ifndef USRIOSIZE #define USRIOSIZE 1024 #endif /* * The number of seconds for a process to be blocked before being * considered very swappable. */ #ifndef MAXSLP #define MAXSLP 20 #endif /* * Segment handling stuff */ #define SEGMENT_LENGTH ( 0x10000000L) #define SEGMENT_MASK (~0x0fffffffL) /* * Macros to manipulate VSIDs */ #if 0 /* * Move the SR# to the top bits to make the lower bits entirely random * so to give better PTE distribution. */ #define VSID__KEYSHFT (SR_VSID_WIDTH - SR_KEY_LEN) #define VSID_SR_INCREMENT ((1L << VSID__KEYSHFT) - 1) #define VSID__HASHMASK (VSID_SR_INCREMENT - 1) #define VSID_MAKE(sr, hash) \ (( \ (((sr) << VSID__KEYSHFT) | ((hash) & VSID__HASMASK)) << SR_VSID_SHFT) & SR_VSID) #define VSID_TO_SR(vsid) \ (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__KEYSHFT)) #define VSID_TO_HASH(vsid) \ (((vsid) & SR_VSID) >> SR_VSID_SHFT) & VSID__HASHMASK) #else #define VSID__HASHSHFT (SR_KEY_LEN) #define VSID_SR_INCREMENT (1L << 0) #define VSID__KEYMASK ((1L << VSID__HASHSHFT) - 1) #define VSID_MAKE(sr, hash) \ (( \ (((hash) << VSID__HASHSHFT) | ((sr) & VSID__KEYMASK)) \ << SR_VSID_SHFT) & SR_VSID) #define VSID_TO_SR(vsid) \ (((vsid) >> SR_VSID_SHFT) & VSID__KEYMASK) #define VSID_TO_HASH(vsid) \ (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__HASHSHFT)) #endif /*0*/ #ifndef _LP64 /* * Fixed segments */ #ifndef USER_SR #define USER_SR 12 #endif #ifndef KERNEL_SR #define KERNEL_SR 13 #endif #ifndef KERNEL2_SR #define KERNEL2_SR 14 #endif #define KERNEL2_SEGMENT VSID_MAKE(KERNEL2_SR, KERNEL_VSIDBITS) #endif #define KERNEL_VSIDBITS 0xfffff #define PHYSMAP_VSIDBITS 0xffffe #define PHYSMAPN_SEGMENT(s) VSID_MAKE(s, PHYSMAP_VSIDBITS) #define KERNEL_SEGMENT VSID_MAKE(KERNEL_SR, KERNEL_VSIDBITS) #define KERNELN_SEGMENT(s) VSID_MAKE(s, KERNEL_VSIDBITS) /* XXXSL: need something here that will never be mapped */ #define EMPTY_SEGMENT VSID_MAKE(0, 0xffffe) #define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT)) /* * Some system constants */ #ifndef NPMAPS #define NPMAPS 32768 /* Number of pmaps in system */ #endif #define VM_MIN_ADDRESS ((vaddr_t) 0) #define VM_MAXUSER_ADDRESS32 ((vaddr_t) (uint32_t) ~0xfffL) #ifdef _LP64 #define VM_MAXUSER_ADDRESS ((vaddr_t) 1UL << 48) /* 256TB */ #else #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 #endif #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS #ifdef _LP64 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xffffffUL << 40) /* top 1TB */ #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -32768) #else #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) (KERNEL_SR << ADDR_SR_SHFT)) #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH) #endif #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST #ifndef VM_PHYS_SIZE #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) #endif #endif /* _POWERPC_OEA_VMPARAM_H_ */