/* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * 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 the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * from: @(#)machConst.h 8.1 (Berkeley) 6/10/93 * $Id: machConst.h,v 1.3 1994/05/27 09:01:23 glass Exp $ * * machConst.h -- * * Machine dependent constants. * * Copyright (C) 1989 Digital Equipment Corporation. * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted, * provided that the above copyright notice appears in all copies. * Digital Equipment Corporation makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. * * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machConst.h, * v 9.2 89/10/21 15:55:22 jhh Exp SPRITE (DECWRL) * from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAddrs.h, * v 1.2 89/08/15 18:28:21 rab Exp SPRITE (DECWRL) * from: Header: /sprite/src/kernel/vm/ds3100.md/RCS/vmPmaxConst.h, * v 9.1 89/09/18 17:33:00 shirriff Exp SPRITE (DECWRL) * $Id: machConst.h,v 1.3 1994/05/27 09:01:23 glass Exp $ */ #ifndef _MACHCONST #define _MACHCONST #define MACH_KUSEG_ADDR 0x0 #define MACH_CACHED_MEMORY_ADDR 0x80000000 #define MACH_UNCACHED_MEMORY_ADDR 0xa0000000 #define MACH_KSEG2_ADDR 0xc0000000 #define MACH_MAX_MEM_ADDR 0xbe000000 #define MACH_RESERVED_ADDR 0xbfc80000 #define MACH_CACHED_TO_PHYS(x) ((unsigned)(x) & 0x1fffffff) #define MACH_PHYS_TO_CACHED(x) ((unsigned)(x) | MACH_CACHED_MEMORY_ADDR) #define MACH_UNCACHED_TO_PHYS(x) ((unsigned)(x) & 0x1fffffff) #define MACH_PHYS_TO_UNCACHED(x) ((unsigned)(x) | MACH_UNCACHED_MEMORY_ADDR) #define MACH_CODE_START 0x80030000 /* * The bits in the cause register. * * MACH_CR_BR_DELAY Exception happened in branch delay slot. * MACH_CR_COP_ERR Coprocessor error. * Interrupt pending bits defined below. * MACH_CR_EXC_CODE The exception type (see exception codes below). */ #define MACH_CR_BR_DELAY 0x80000000 #define MACH_CR_COP_ERR 0x30000000 #define MACH_CR_EXC_CODE 0x0000003C #define MACH_CR_EXC_CODE_SHIFT 2 /* * The bits in the status register. All bits are active when set to 1. * * MACH_SR_CO_USABILITY Control the usability of the four coprocessors. * MACH_SR_BOOT_EXC_VEC Use alternate exception vectors. * MACH_SR_TLB_SHUTDOWN TLB disabled. * MACH_SR_PARITY_ERR Parity error. * MACH_SR_CACHE_MISS Most recent D-cache load resulted in a miss. * MACH_SR_PARITY_ZERO Zero replaces outgoing parity bits. * MACH_SR_SWAP_CACHES Swap I-cache and D-cache. * MACH_SR_ISOL_CACHES Isolate D-cache from main memory. * Interrupt enable bits defined below. * MACH_SR_KU_OLD Old kernel/user mode bit. 1 => user mode. * MACH_SR_INT_ENA_OLD Old interrupt enable bit. * MACH_SR_KU_PREV Previous kernel/user mode bit. 1 => user mode. * MACH_SR_INT_ENA_PREV Previous interrupt enable bit. * MACH_SR_KU_CUR Current kernel/user mode bit. 1 => user mode. * MACH_SR_INT_ENA_CUR Current interrupt enable bit. */ #define MACH_SR_COP_USABILITY 0xf0000000 #define MACH_SR_COP_0_BIT 0x10000000 #define MACH_SR_COP_1_BIT 0x20000000 #define MACH_SR_BOOT_EXC_VEC 0x00400000 #define MACH_SR_TLB_SHUTDOWN 0x00200000 #define MACH_SR_PARITY_ERR 0x00100000 #define MACH_SR_CACHE_MISS 0x00080000 #define MACH_SR_PARITY_ZERO 0x00040000 #define MACH_SR_SWAP_CACHES 0x00020000 #define MACH_SR_ISOL_CACHES 0x00010000 #define MACH_SR_KU_OLD 0x00000020 #define MACH_SR_INT_ENA_OLD 0x00000010 #define MACH_SR_KU_PREV 0x00000008 #define MACH_SR_INT_ENA_PREV 0x00000004 #define MACH_SR_KU_CUR 0x00000002 #define MACH_SR_INT_ENA_CUR 0x00000001 #define MACH_SR_MBZ 0x0f8000c0 /* * The interrupt masks. * If a bit in the mask is 1 then the interrupt is enabled (or pending). */ #define MACH_INT_MASK 0xff00 #define MACH_INT_MASK_5 0x8000 #define MACH_INT_MASK_4 0x4000 #define MACH_INT_MASK_3 0x2000 #define MACH_INT_MASK_2 0x1000 #define MACH_INT_MASK_1 0x0800 #define MACH_INT_MASK_0 0x0400 #define MACH_HARD_INT_MASK 0xfc00 #define MACH_SOFT_INT_MASK_1 0x0200 #define MACH_SOFT_INT_MASK_0 0x0100 /* * The bits in the context register. */ #define MACH_CNTXT_PTE_BASE 0xFFE00000 #define MACH_CNTXT_BAD_VPN 0x001FFFFC /* * Location of exception vectors. */ #define MACH_RESET_EXC_VEC 0xBFC00000 #define MACH_UTLB_MISS_EXC_VEC 0x80000000 #define MACH_GEN_EXC_VEC 0x80000080 /* * Coprocessor 0 registers: * * MACH_COP_0_TLB_INDEX TLB index. * MACH_COP_0_TLB_RANDOM TLB random. * MACH_COP_0_TLB_LOW TLB entry low. * MACH_COP_0_TLB_CONTEXT TLB context. * MACH_COP_0_BAD_VADDR Bad virtual address. * MACH_COP_0_TLB_HI TLB entry high. * MACH_COP_0_STATUS_REG Status register. * MACH_COP_0_CAUSE_REG Exception cause register. * MACH_COP_0_EXC_PC Exception PC. * MACH_COP_0_PRID Processor revision identifier. */ #define MACH_COP_0_TLB_INDEX $0 #define MACH_COP_0_TLB_RANDOM $1 #define MACH_COP_0_TLB_LOW $2 #define MACH_COP_0_TLB_CONTEXT $4 #define MACH_COP_0_BAD_VADDR $8 #define MACH_COP_0_TLB_HI $10 #define MACH_COP_0_STATUS_REG $12 #define MACH_COP_0_CAUSE_REG $13 #define MACH_COP_0_EXC_PC $14 #define MACH_COP_0_PRID $15 /* * Values for the code field in a break instruction. */ #define MACH_BREAK_INSTR 0x0000000d #define MACH_BREAK_VAL_MASK 0x03ff0000 #define MACH_BREAK_VAL_SHIFT 16 #define MACH_BREAK_KDB_VAL 512 #define MACH_BREAK_SSTEP_VAL 513 #define MACH_BREAK_BRKPT_VAL 514 #define MACH_BREAK_KDB (MACH_BREAK_INSTR | \ (MACH_BREAK_KDB_VAL << MACH_BREAK_VAL_SHIFT)) #define MACH_BREAK_SSTEP (MACH_BREAK_INSTR | \ (MACH_BREAK_SSTEP_VAL << MACH_BREAK_VAL_SHIFT)) #define MACH_BREAK_BRKPT (MACH_BREAK_INSTR | \ (MACH_BREAK_BRKPT_VAL << MACH_BREAK_VAL_SHIFT)) /* * Mininum and maximum cache sizes. */ #define MACH_MIN_CACHE_SIZE (16 * 1024) #define MACH_MAX_CACHE_SIZE (256 * 1024) /* * The floating point version and status registers. */ #define MACH_FPC_ID $0 #define MACH_FPC_CSR $31 /* * The floating point coprocessor status register bits. */ #define MACH_FPC_ROUNDING_BITS 0x00000003 #define MACH_FPC_ROUND_RN 0x00000000 #define MACH_FPC_ROUND_RZ 0x00000001 #define MACH_FPC_ROUND_RP 0x00000002 #define MACH_FPC_ROUND_RM 0x00000003 #define MACH_FPC_STICKY_BITS 0x0000007c #define MACH_FPC_STICKY_INEXACT 0x00000004 #define MACH_FPC_STICKY_UNDERFLOW 0x00000008 #define MACH_FPC_STICKY_OVERFLOW 0x00000010 #define MACH_FPC_STICKY_DIV0 0x00000020 #define MACH_FPC_STICKY_INVALID 0x00000040 #define MACH_FPC_ENABLE_BITS 0x00000f80 #define MACH_FPC_ENABLE_INEXACT 0x00000080 #define MACH_FPC_ENABLE_UNDERFLOW 0x00000100 #define MACH_FPC_ENABLE_OVERFLOW 0x00000200 #define MACH_FPC_ENABLE_DIV0 0x00000400 #define MACH_FPC_ENABLE_INVALID 0x00000800 #define MACH_FPC_EXCEPTION_BITS 0x0003f000 #define MACH_FPC_EXCEPTION_INEXACT 0x00001000 #define MACH_FPC_EXCEPTION_UNDERFLOW 0x00002000 #define MACH_FPC_EXCEPTION_OVERFLOW 0x00004000 #define MACH_FPC_EXCEPTION_DIV0 0x00008000 #define MACH_FPC_EXCEPTION_INVALID 0x00010000 #define MACH_FPC_EXCEPTION_UNIMPL 0x00020000 #define MACH_FPC_COND_BIT 0x00800000 #define MACH_FPC_MBZ_BITS 0xff7c0000 /* * Constants to determine if have a floating point instruction. */ #define MACH_OPCODE_SHIFT 26 #define MACH_OPCODE_C1 0x11 /* * The low part of the TLB entry. */ #define VMMACH_TLB_PF_NUM 0xfffff000 #define VMMACH_TLB_NON_CACHEABLE_BIT 0x00000800 #define VMMACH_TLB_MOD_BIT 0x00000400 #define VMMACH_TLB_VALID_BIT 0x00000200 #define VMMACH_TLB_GLOBAL_BIT 0x00000100 #define VMMACH_TLB_PHYS_PAGE_SHIFT 12 /* * The high part of the TLB entry. */ #define VMMACH_TLB_VIRT_PAGE_NUM 0xfffff000 #define VMMACH_TLB_PID 0x00000fc0 #define VMMACH_TLB_PID_SHIFT 6 #define VMMACH_TLB_VIRT_PAGE_SHIFT 12 /* * The shift to put the index in the right spot. */ #define VMMACH_TLB_INDEX_SHIFT 8 /* * The number of TLB entries and the first one that write random hits. */ #define VMMACH_NUM_TLB_ENTRIES 64 #define VMMACH_FIRST_RAND_ENTRY 8 /* * The number of process id entries. */ #define VMMACH_NUM_PIDS 64 /* * TLB probe return codes. */ #define VMMACH_TLB_NOT_FOUND 0 #define VMMACH_TLB_FOUND 1 #define VMMACH_TLB_FOUND_WITH_PATCH 2 #define VMMACH_TLB_PROBE_ERROR 3 /* * Kernel virtual address for user page table entries * (i.e., the address for the context register). */ #define VMMACH_PTE_BASE 0xFFC00000 #endif /* _MACHCONST */