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freebsd-dev/sys/mips/include/cpuregs.h
Adrian Chadd 56f9ec0685 Move MIPS32 Release 2 and Release 3 CPUs to use the EHB instruction for 
clearing hazards.

This revision makes currently known MIPS32 Release 2 and Release 3 CPUs use
the EHB instruction when clearing hazards. So far the MIPS 74K and MIPS1004K
 (somewhat) were already using the EHB. Now we add more r2 and r3 CPUs to
this list.

Also, for the cases of MIPS coherent processing systems (currently 1004K,
1074K, interAptiv and proAptiv) - define proper CCA attributes.

Submitted by:	Stanislav Galabov <sgalabov@gmail.com>
Reviewed by:	imp
Differential Revision:	https://reviews.freebsd.org/D5078
2016-02-02 16:00:42 +00:00

671 lines
24 KiB
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/* $NetBSD: cpuregs.h,v 1.70 2006/05/15 02:26:54 simonb Exp $ */
/*
* 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. 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.
*
* @(#)machConst.h 8.1 (Berkeley) 6/10/93
*
* 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)
*
* $FreeBSD$
*/
#ifndef _MIPS_CPUREGS_H_
#define _MIPS_CPUREGS_H_
/*
* Address space.
* 32-bit mips CPUS partition their 32-bit address space into four segments:
*
* kuseg 0x00000000 - 0x7fffffff User virtual mem, mapped
* kseg0 0x80000000 - 0x9fffffff Physical memory, cached, unmapped
* kseg1 0xa0000000 - 0xbfffffff Physical memory, uncached, unmapped
* kseg2 0xc0000000 - 0xffffffff kernel-virtual, mapped
*
* Caching of mapped addresses is controlled by bits in the TLB entry.
*/
#define MIPS_KSEG0_LARGEST_PHYS (0x20000000)
#define MIPS_KSEG0_PHYS_MASK (0x1fffffff)
#define MIPS_XKPHYS_LARGEST_PHYS (0x10000000000) /* 40 bit PA */
#define MIPS_XKPHYS_PHYS_MASK (0x0ffffffffff)
#ifndef LOCORE
#define MIPS_KUSEG_START 0x00000000
#define MIPS_KSEG0_START ((intptr_t)(int32_t)0x80000000)
#define MIPS_KSEG0_END ((intptr_t)(int32_t)0x9fffffff)
#define MIPS_KSEG1_START ((intptr_t)(int32_t)0xa0000000)
#define MIPS_KSEG1_END ((intptr_t)(int32_t)0xbfffffff)
#define MIPS_KSSEG_START ((intptr_t)(int32_t)0xc0000000)
#define MIPS_KSSEG_END ((intptr_t)(int32_t)0xdfffffff)
#define MIPS_KSEG3_START ((intptr_t)(int32_t)0xe0000000)
#define MIPS_KSEG3_END ((intptr_t)(int32_t)0xffffffff)
#define MIPS_KSEG2_START MIPS_KSSEG_START
#define MIPS_KSEG2_END MIPS_KSSEG_END
#endif
#define MIPS_PHYS_TO_KSEG0(x) ((uintptr_t)(x) | MIPS_KSEG0_START)
#define MIPS_PHYS_TO_KSEG1(x) ((uintptr_t)(x) | MIPS_KSEG1_START)
#define MIPS_KSEG0_TO_PHYS(x) ((uintptr_t)(x) & MIPS_KSEG0_PHYS_MASK)
#define MIPS_KSEG1_TO_PHYS(x) ((uintptr_t)(x) & MIPS_KSEG0_PHYS_MASK)
#define MIPS_IS_KSEG0_ADDR(x) \
(((vm_offset_t)(x) >= MIPS_KSEG0_START) && \
((vm_offset_t)(x) <= MIPS_KSEG0_END))
#define MIPS_IS_KSEG1_ADDR(x) \
(((vm_offset_t)(x) >= MIPS_KSEG1_START) && \
((vm_offset_t)(x) <= MIPS_KSEG1_END))
#define MIPS_IS_VALID_PTR(x) (MIPS_IS_KSEG0_ADDR(x) || \
MIPS_IS_KSEG1_ADDR(x))
/*
* Cache Coherency Attributes:
* UC: Uncached.
* UA: Uncached accelerated.
* C: Cacheable, coherency unspecified.
* CNC: Cacheable non-coherent.
* CC: Cacheable coherent.
* CCS: Cacheable coherent, shared read.
* CCE: Cacheable coherent, exclusive read.
* CCEW: Cacheable coherent, exclusive write.
* CCUOW: Cacheable coherent, update on write.
*
* Note that some bits vary in meaning across implementations (and that the
* listing here is no doubt incomplete) and that the optimal cached mode varies
* between implementations. 0x02 is required to be UC and 0x03 is required to
* be a least C.
*
* We define the following logical bits:
* UNCACHED:
* The optimal uncached mode for the target CPU type. This must
* be suitable for use in accessing memory-mapped devices.
* CACHED: The optional cached mode for the target CPU type.
*/
#define MIPS_CCA_UC 0x02 /* Uncached. */
#define MIPS_CCA_C 0x03 /* Cacheable, coherency unspecified. */
#if defined(CPU_R4000) || defined(CPU_R10000)
#define MIPS_CCA_CNC 0x03
#define MIPS_CCA_CCE 0x04
#define MIPS_CCA_CCEW 0x05
#ifdef CPU_R4000
#define MIPS_CCA_CCUOW 0x06
#endif
#ifdef CPU_R10000
#define MIPS_CCA_UA 0x07
#endif
#define MIPS_CCA_CACHED MIPS_CCA_CCEW
#endif /* defined(CPU_R4000) || defined(CPU_R10000) */
#if defined(CPU_SB1)
#define MIPS_CCA_CC 0x05 /* Cacheable Coherent. */
#endif
#if defined(CPU_MIPS74K)
#define MIPS_CCA_UNCACHED 0x02
#define MIPS_CCA_CACHED 0x03
#endif
/*
* 1004K and 1074K cores, as well as interAptiv and proAptiv cores, support
* Cacheable Coherent CCAs 0x04 and 0x05, as well as Cacheable non-Coherent
* CCA 0x03 and Uncached Accelerated CCA 0x07
*/
#if defined(CPU_MIPS1004K) || defined(CPU_MIPS1074K) || \
defined(CPU_INTERAPTIV) || defined(CPU_PROAPTIV)
#define MIPS_CCA_CNC 0x03
#define MIPS_CCA_CCE 0x04
#define MIPS_CCA_CCS 0x05
#define MIPS_CCA_UA 0x07
/* We use shared read CCA for CACHED CCA */
#define MIPS_CCA_CACHED MIPS_CCA_CCS
#endif
#ifndef MIPS_CCA_UNCACHED
#define MIPS_CCA_UNCACHED MIPS_CCA_UC
#endif
/*
* If we don't know which cached mode to use and there is a cache coherent
* mode, use it. If there is not a cache coherent mode, use the required
* cacheable mode.
*/
#ifndef MIPS_CCA_CACHED
#ifdef MIPS_CCA_CC
#define MIPS_CCA_CACHED MIPS_CCA_CC
#else
#define MIPS_CCA_CACHED MIPS_CCA_C
#endif
#endif
#define MIPS_PHYS_TO_XKPHYS(cca,x) \
((0x2ULL << 62) | ((unsigned long long)(cca) << 59) | (x))
#define MIPS_PHYS_TO_XKPHYS_CACHED(x) \
((0x2ULL << 62) | ((unsigned long long)(MIPS_CCA_CACHED) << 59) | (x))
#define MIPS_PHYS_TO_XKPHYS_UNCACHED(x) \
((0x2ULL << 62) | ((unsigned long long)(MIPS_CCA_UNCACHED) << 59) | (x))
#define MIPS_XKPHYS_TO_PHYS(x) ((uintptr_t)(x) & MIPS_XKPHYS_PHYS_MASK)
#define MIPS_XKPHYS_START 0x8000000000000000
#define MIPS_XKPHYS_END 0xbfffffffffffffff
#define MIPS_XUSEG_START 0x0000000000000000
#define MIPS_XUSEG_END 0x0000010000000000
#define MIPS_XKSEG_START 0xc000000000000000
#define MIPS_XKSEG_END 0xc00000ff80000000
#define MIPS_XKSEG_COMPAT32_START 0xffffffff80000000
#define MIPS_XKSEG_COMPAT32_END 0xffffffffffffffff
#define MIPS_XKSEG_TO_COMPAT32(va) ((va) & 0xffffffff)
#ifdef __mips_n64
#define MIPS_DIRECT_MAPPABLE(pa) 1
#define MIPS_PHYS_TO_DIRECT(pa) MIPS_PHYS_TO_XKPHYS_CACHED(pa)
#define MIPS_PHYS_TO_DIRECT_UNCACHED(pa) MIPS_PHYS_TO_XKPHYS_UNCACHED(pa)
#define MIPS_DIRECT_TO_PHYS(va) MIPS_XKPHYS_TO_PHYS(va)
#else
#define MIPS_DIRECT_MAPPABLE(pa) ((pa) < MIPS_KSEG0_LARGEST_PHYS)
#define MIPS_PHYS_TO_DIRECT(pa) MIPS_PHYS_TO_KSEG0(pa)
#define MIPS_PHYS_TO_DIRECT_UNCACHED(pa) MIPS_PHYS_TO_KSEG1(pa)
#define MIPS_DIRECT_TO_PHYS(va) MIPS_KSEG0_TO_PHYS(va)
#endif
/* CPU dependent mtc0 hazard hook */
#if defined(CPU_CNMIPS) || defined(CPU_RMI)
#define COP0_SYNC
#elif defined(CPU_NLM)
#define COP0_SYNC .word 0xc0 /* ehb */
#elif defined(CPU_SB1)
#define COP0_SYNC ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop; ssnop
#elif defined(CPU_MIPS24K) || defined(CPU_MIPS34K) || \
defined(CPU_MIPS74K) || defined(CPU_MIPS1004K) || \
defined(CPU_MIPS1074K) || defined(CPU_INTERAPTIV) || \
defined(CPU_PROAPTIV)
/*
* According to MIPS32tm Architecture for Programmers, Vol.II, rev. 2.00:
* "As EHB becomes standard in MIPS implementations, the previous SSNOPs can be
* removed, leaving only the EHB".
* Also, all MIPS32 Release 2 implementations have the EHB instruction, which
* resolves all execution hazards. The same goes for MIPS32 Release 3.
*/
#define COP0_SYNC .word 0xc0 /* ehb */
#else
/*
* Pick a reasonable default based on the "typical" spacing described in the
* "CP0 Hazards" chapter of MIPS Architecture Book Vol III.
*/
#define COP0_SYNC ssnop; ssnop; ssnop; ssnop; .word 0xc0;
#endif
#define COP0_HAZARD_FPUENABLE nop; nop; nop; nop;
/*
* The bits in the cause register.
*
* Bits common to r3000 and r4000:
*
* MIPS_CR_BR_DELAY Exception happened in branch delay slot.
* MIPS_CR_COP_ERR Coprocessor error.
* MIPS_CR_IP Interrupt pending bits defined below.
* (same meaning as in CAUSE register).
* MIPS_CR_EXC_CODE The exception type (see exception codes below).
*
* Differences:
* r3k has 4 bits of execption type, r4k has 5 bits.
*/
#define MIPS_CR_BR_DELAY 0x80000000
#define MIPS_CR_COP_ERR 0x30000000
#define MIPS_CR_EXC_CODE 0x0000007C /* five bits */
#define MIPS_CR_IP 0x0000FF00
#define MIPS_CR_EXC_CODE_SHIFT 2
#define MIPS_CR_COP_ERR_SHIFT 28
/*
* The bits in the status register. All bits are active when set to 1.
*
* R3000 status register fields:
* MIPS_SR_COP_USABILITY Control the usability of the four coprocessors.
* MIPS_SR_TS TLB shutdown.
*
* MIPS_SR_INT_IE Master (current) interrupt enable bit.
*
* Differences:
* r3k has cache control is via frobbing SR register bits, whereas the
* r4k cache control is via explicit instructions.
* r3k has a 3-entry stack of kernel/user bits, whereas the
* r4k has kernel/supervisor/user.
*/
#define MIPS_SR_COP_USABILITY 0xf0000000
#define MIPS_SR_COP_0_BIT 0x10000000
#define MIPS_SR_COP_1_BIT 0x20000000
#define MIPS_SR_COP_2_BIT 0x40000000
/* r4k and r3k differences, see below */
#define MIPS_SR_MX 0x01000000 /* MIPS64 */
#define MIPS_SR_PX 0x00800000 /* MIPS64 */
#define MIPS_SR_BEV 0x00400000 /* Use boot exception vector */
#define MIPS_SR_TS 0x00200000
#define MIPS_SR_DE 0x00010000
#define MIPS_SR_INT_IE 0x00000001
/*#define MIPS_SR_MBZ 0x0f8000c0*/ /* Never used, true for r3k */
#define MIPS_SR_INT_MASK 0x0000ff00
/*
* R4000 status register bit definitons,
* where different from r2000/r3000.
*/
#define MIPS_SR_XX 0x80000000
#define MIPS_SR_RP 0x08000000
#define MIPS_SR_FR 0x04000000
#define MIPS_SR_RE 0x02000000
#define MIPS_SR_DIAG_DL 0x01000000 /* QED 52xx */
#define MIPS_SR_DIAG_IL 0x00800000 /* QED 52xx */
#define MIPS_SR_SR 0x00100000
#define MIPS_SR_NMI 0x00080000 /* MIPS32/64 */
#define MIPS_SR_DIAG_CH 0x00040000
#define MIPS_SR_DIAG_CE 0x00020000
#define MIPS_SR_DIAG_PE 0x00010000
#define MIPS_SR_EIE 0x00010000 /* TX79/R5900 */
#define MIPS_SR_KX 0x00000080
#define MIPS_SR_SX 0x00000040
#define MIPS_SR_UX 0x00000020
#define MIPS_SR_KSU_MASK 0x00000018
#define MIPS_SR_KSU_USER 0x00000010
#define MIPS_SR_KSU_SUPER 0x00000008
#define MIPS_SR_KSU_KERNEL 0x00000000
#define MIPS_SR_ERL 0x00000004
#define MIPS_SR_EXL 0x00000002
/*
* The interrupt masks.
* If a bit in the mask is 1 then the interrupt is enabled (or pending).
*/
#define MIPS_INT_MASK 0xff00
#define MIPS_INT_MASK_5 0x8000
#define MIPS_INT_MASK_4 0x4000
#define MIPS_INT_MASK_3 0x2000
#define MIPS_INT_MASK_2 0x1000
#define MIPS_INT_MASK_1 0x0800
#define MIPS_INT_MASK_0 0x0400
#define MIPS_HARD_INT_MASK 0xfc00
#define MIPS_SOFT_INT_MASK_1 0x0200
#define MIPS_SOFT_INT_MASK_0 0x0100
/*
* The bits in the MIPS3 config register.
*
* bit 0..5: R/W, Bit 6..31: R/O
*/
/* kseg0 coherency algorithm - see MIPS3_TLB_ATTR values */
#define MIPS_CONFIG_K0_MASK 0x00000007
/*
* R/W Update on Store Conditional
* 0: Store Conditional uses coherency algorithm specified by TLB
* 1: Store Conditional uses cacheable coherent update on write
*/
#define MIPS_CONFIG_CU 0x00000008
#define MIPS_CONFIG_DB 0x00000010 /* Primary D-cache line size */
#define MIPS_CONFIG_IB 0x00000020 /* Primary I-cache line size */
#define MIPS_CONFIG_CACHE_L1_LSIZE(config, bit) \
(((config) & (bit)) ? 32 : 16)
#define MIPS_CONFIG_DC_MASK 0x000001c0 /* Primary D-cache size */
#define MIPS_CONFIG_DC_SHIFT 6
#define MIPS_CONFIG_IC_MASK 0x00000e00 /* Primary I-cache size */
#define MIPS_CONFIG_IC_SHIFT 9
#define MIPS_CONFIG_C_DEFBASE 0x1000 /* default base 2^12 */
/* Cache size mode indication: available only on Vr41xx CPUs */
#define MIPS_CONFIG_CS 0x00001000
#define MIPS_CONFIG_C_4100BASE 0x0400 /* base is 2^10 if CS=1 */
#define MIPS_CONFIG_CACHE_SIZE(config, mask, base, shift) \
((base) << (((config) & (mask)) >> (shift)))
/* External cache enable: Controls L2 for R5000/Rm527x and L3 for Rm7000 */
#define MIPS_CONFIG_SE 0x00001000
/* Block ordering: 0: sequential, 1: sub-block */
#define MIPS_CONFIG_EB 0x00002000
/* ECC mode - 0: ECC mode, 1: parity mode */
#define MIPS_CONFIG_EM 0x00004000
/* BigEndianMem - 0: kernel and memory are little endian, 1: big endian */
#define MIPS_CONFIG_BE 0x00008000
/* Dirty Shared coherency state - 0: enabled, 1: disabled */
#define MIPS_CONFIG_SM 0x00010000
/* Secondary Cache - 0: present, 1: not present */
#define MIPS_CONFIG_SC 0x00020000
/* System Port width - 0: 64-bit, 1: 32-bit (QED RM523x), 2,3: reserved */
#define MIPS_CONFIG_EW_MASK 0x000c0000
#define MIPS_CONFIG_EW_SHIFT 18
/* Secondary Cache port width - 0: 128-bit data path to S-cache, 1: reserved */
#define MIPS_CONFIG_SW 0x00100000
/* Split Secondary Cache Mode - 0: I/D mixed, 1: I/D separated by SCAddr(17) */
#define MIPS_CONFIG_SS 0x00200000
/* Secondary Cache line size */
#define MIPS_CONFIG_SB_MASK 0x00c00000
#define MIPS_CONFIG_SB_SHIFT 22
#define MIPS_CONFIG_CACHE_L2_LSIZE(config) \
(0x10 << (((config) & MIPS_CONFIG_SB_MASK) >> MIPS_CONFIG_SB_SHIFT))
/* Write back data rate */
#define MIPS_CONFIG_EP_MASK 0x0f000000
#define MIPS_CONFIG_EP_SHIFT 24
/* System clock ratio - this value is CPU dependent */
#define MIPS_CONFIG_EC_MASK 0x70000000
#define MIPS_CONFIG_EC_SHIFT 28
/* Master-Checker Mode - 1: enabled */
#define MIPS_CONFIG_CM 0x80000000
/*
* The bits in the MIPS4 config register.
*/
/*
* Location of exception vectors.
*
* Common vectors: reset and UTLB miss.
*/
#define MIPS_RESET_EXC_VEC ((intptr_t)(int32_t)0xBFC00000)
#define MIPS_UTLB_MISS_EXC_VEC ((intptr_t)(int32_t)0x80000000)
/*
* MIPS-III exception vectors
*/
#define MIPS_XTLB_MISS_EXC_VEC ((intptr_t)(int32_t)0x80000080)
#define MIPS_CACHE_ERR_EXC_VEC ((intptr_t)(int32_t)0x80000100)
#define MIPS_GEN_EXC_VEC ((intptr_t)(int32_t)0x80000180)
/*
* MIPS32/MIPS64 (and some MIPS3) dedicated interrupt vector.
*/
#define MIPS_INTR_EXC_VEC 0x80000200
/*
* Coprocessor 0 registers:
*
* v--- width for mips I,III,32,64
* (3=32bit, 6=64bit, i=impl dep)
* 0 MIPS_COP_0_TLB_INDEX 3333 TLB Index.
* 1 MIPS_COP_0_TLB_RANDOM 3333 TLB Random.
* 2 MIPS_COP_0_TLB_LO0 .636 r4k TLB entry low.
* 3 MIPS_COP_0_TLB_LO1 .636 r4k TLB entry low, extended.
* 4 MIPS_COP_0_TLB_CONTEXT 3636 TLB Context.
* 5 MIPS_COP_0_TLB_PG_MASK .333 TLB Page Mask register.
* 6 MIPS_COP_0_TLB_WIRED .333 Wired TLB number.
* 7 MIPS_COP_0_INFO ..33 Info registers
* 8 MIPS_COP_0_BAD_VADDR 3636 Bad virtual address.
* 9 MIPS_COP_0_COUNT .333 Count register.
* 10 MIPS_COP_0_TLB_HI 3636 TLB entry high.
* 11 MIPS_COP_0_COMPARE .333 Compare (against Count).
* 12 MIPS_COP_0_STATUS 3333 Status register.
* 13 MIPS_COP_0_CAUSE 3333 Exception cause register.
* 14 MIPS_COP_0_EXC_PC 3636 Exception PC.
* 15 MIPS_COP_0_PRID 3333 Processor revision identifier.
* 16 MIPS_COP_0_CONFIG 3333 Configuration register.
* 16/1 MIPS_COP_0_CONFIG1 ..33 Configuration register 1.
* 16/2 MIPS_COP_0_CONFIG2 ..33 Configuration register 2.
* 16/3 MIPS_COP_0_CONFIG3 ..33 Configuration register 3.
* 16/4 MIPS_COP_0_CONFIG4 ..33 Configuration register 4.
* 17 MIPS_COP_0_LLADDR .336 Load Linked Address.
* 18 MIPS_COP_0_WATCH_LO .336 WatchLo register.
* 19 MIPS_COP_0_WATCH_HI .333 WatchHi register.
* 20 MIPS_COP_0_TLB_XCONTEXT .6.6 TLB XContext register.
* 23 MIPS_COP_0_DEBUG .... Debug JTAG register.
* 24 MIPS_COP_0_DEPC .... DEPC JTAG register.
* 25 MIPS_COP_0_PERFCNT ..36 Performance Counter register.
* 26 MIPS_COP_0_ECC .3ii ECC / Error Control register.
* 27 MIPS_COP_0_CACHE_ERR .3ii Cache Error register.
* 28/0 MIPS_COP_0_TAG_LO .3ii Cache TagLo register (instr).
* 28/1 MIPS_COP_0_DATA_LO ..ii Cache DataLo register (instr).
* 28/2 MIPS_COP_0_TAG_LO ..ii Cache TagLo register (data).
* 28/3 MIPS_COP_0_DATA_LO ..ii Cache DataLo register (data).
* 29/0 MIPS_COP_0_TAG_HI .3ii Cache TagHi register (instr).
* 29/1 MIPS_COP_0_DATA_HI ..ii Cache DataHi register (instr).
* 29/2 MIPS_COP_0_TAG_HI ..ii Cache TagHi register (data).
* 29/3 MIPS_COP_0_DATA_HI ..ii Cache DataHi register (data).
* 30 MIPS_COP_0_ERROR_PC .636 Error EPC register.
* 31 MIPS_COP_0_DESAVE .... DESAVE JTAG register.
*/
/* Deal with inclusion from an assembly file. */
#if defined(_LOCORE) || defined(LOCORE)
#define _(n) $n
#else
#define _(n) n
#endif
#define MIPS_COP_0_TLB_INDEX _(0)
#define MIPS_COP_0_TLB_RANDOM _(1)
/* Name and meaning of TLB bits for $2 differ on r3k and r4k. */
#define MIPS_COP_0_TLB_CONTEXT _(4)
/* $5 and $6 new with MIPS-III */
#define MIPS_COP_0_BAD_VADDR _(8)
#define MIPS_COP_0_TLB_HI _(10)
#define MIPS_COP_0_STATUS _(12)
#define MIPS_COP_0_CAUSE _(13)
#define MIPS_COP_0_EXC_PC _(14)
#define MIPS_COP_0_PRID _(15)
/* MIPS-III */
#define MIPS_COP_0_TLB_LO0 _(2)
#define MIPS_COP_0_TLB_LO1 _(3)
#define MIPS_COP_0_TLB_PG_MASK _(5)
#define MIPS_COP_0_TLB_WIRED _(6)
#define MIPS_COP_0_COUNT _(9)
#define MIPS_COP_0_COMPARE _(11)
#define MIPS_COP_0_CONFIG _(16)
#define MIPS_COP_0_LLADDR _(17)
#define MIPS_COP_0_WATCH_LO _(18)
#define MIPS_COP_0_WATCH_HI _(19)
#define MIPS_COP_0_TLB_XCONTEXT _(20)
#define MIPS_COP_0_ECC _(26)
#define MIPS_COP_0_CACHE_ERR _(27)
#define MIPS_COP_0_TAG_LO _(28)
#define MIPS_COP_0_TAG_HI _(29)
#define MIPS_COP_0_ERROR_PC _(30)
/* MIPS32/64 */
#define MIPS_COP_0_INFO _(7)
#define MIPS_COP_0_DEBUG _(23)
#define MIPS_COP_0_DEPC _(24)
#define MIPS_COP_0_PERFCNT _(25)
#define MIPS_COP_0_DATA_LO _(28)
#define MIPS_COP_0_DATA_HI _(29)
#define MIPS_COP_0_DESAVE _(31)
/* MIPS32 Config register definitions */
#define MIPS_MMU_NONE 0x00 /* No MMU present */
#define MIPS_MMU_TLB 0x01 /* Standard TLB */
#define MIPS_MMU_BAT 0x02 /* Standard BAT */
#define MIPS_MMU_FIXED 0x03 /* Standard fixed mapping */
#define MIPS_CONFIG0_MT_MASK 0x00000380 /* bits 9..7 MMU Type */
#define MIPS_CONFIG0_MT_SHIFT 7
#define MIPS_CONFIG0_BE 0x00008000 /* data is big-endian */
#define MIPS_CONFIG0_VI 0x00000008 /* instruction cache is virtual */
#define MIPS_CONFIG1_TLBSZ_MASK 0x7E000000 /* bits 30..25 # tlb entries minus one */
#define MIPS_CONFIG1_TLBSZ_SHIFT 25
#define MIPS_CONFIG1_IS_MASK 0x01C00000 /* bits 24..22 icache sets per way */
#define MIPS_CONFIG1_IS_SHIFT 22
#define MIPS_CONFIG1_IL_MASK 0x00380000 /* bits 21..19 icache line size */
#define MIPS_CONFIG1_IL_SHIFT 19
#define MIPS_CONFIG1_IA_MASK 0x00070000 /* bits 18..16 icache associativity */
#define MIPS_CONFIG1_IA_SHIFT 16
#define MIPS_CONFIG1_DS_MASK 0x0000E000 /* bits 15..13 dcache sets per way */
#define MIPS_CONFIG1_DS_SHIFT 13
#define MIPS_CONFIG1_DL_MASK 0x00001C00 /* bits 12..10 dcache line size */
#define MIPS_CONFIG1_DL_SHIFT 10
#define MIPS_CONFIG1_DA_MASK 0x00000380 /* bits 9.. 7 dcache associativity */
#define MIPS_CONFIG1_DA_SHIFT 7
#define MIPS_CONFIG1_LOWBITS 0x0000007F
#define MIPS_CONFIG1_C2 0x00000040 /* Coprocessor 2 implemented */
#define MIPS_CONFIG1_MD 0x00000020 /* MDMX ASE implemented (MIPS64) */
#define MIPS_CONFIG1_PC 0x00000010 /* Performance counters implemented */
#define MIPS_CONFIG1_WR 0x00000008 /* Watch registers implemented */
#define MIPS_CONFIG1_CA 0x00000004 /* MIPS16e ISA implemented */
#define MIPS_CONFIG1_EP 0x00000002 /* EJTAG implemented */
#define MIPS_CONFIG1_FP 0x00000001 /* FPU implemented */
#define MIPS_CONFIG2_SA_SHIFT 0 /* Secondary cache associativity */
#define MIPS_CONFIG2_SA_MASK 0xf
#define MIPS_CONFIG2_SL_SHIFT 4 /* Secondary cache line size */
#define MIPS_CONFIG2_SL_MASK 0xf
#define MIPS_CONFIG2_SS_SHIFT 8 /* Secondary cache sets per way */
#define MIPS_CONFIG2_SS_MASK 0xf
#define MIPS_CONFIG3_CMGCR_MASK (1 << 29) /* Coherence manager present */
#define MIPS_CONFIG4_MMUSIZEEXT 0x000000FF /* bits 7.. 0 MMU Size Extension */
#define MIPS_CONFIG4_MMUEXTDEF 0x0000C000 /* bits 15.14 MMU Extension Definition */
#define MIPS_CONFIG4_MMUEXTDEF_MMUSIZEEXT 0x00004000 /* This values denotes CONFIG4 bits */
/*
* Values for the code field in a break instruction.
*/
#define MIPS_BREAK_INSTR 0x0000000d
#define MIPS_BREAK_VAL_MASK 0x03ff0000
#define MIPS_BREAK_VAL_SHIFT 16
#define MIPS_BREAK_KDB_VAL 512
#define MIPS_BREAK_SSTEP_VAL 513
#define MIPS_BREAK_BRKPT_VAL 514
#define MIPS_BREAK_SOVER_VAL 515
#define MIPS_BREAK_DDB_VAL 516
#define MIPS_BREAK_KDB (MIPS_BREAK_INSTR | \
(MIPS_BREAK_KDB_VAL << MIPS_BREAK_VAL_SHIFT))
#define MIPS_BREAK_SSTEP (MIPS_BREAK_INSTR | \
(MIPS_BREAK_SSTEP_VAL << MIPS_BREAK_VAL_SHIFT))
#define MIPS_BREAK_BRKPT (MIPS_BREAK_INSTR | \
(MIPS_BREAK_BRKPT_VAL << MIPS_BREAK_VAL_SHIFT))
#define MIPS_BREAK_SOVER (MIPS_BREAK_INSTR | \
(MIPS_BREAK_SOVER_VAL << MIPS_BREAK_VAL_SHIFT))
#define MIPS_BREAK_DDB (MIPS_BREAK_INSTR | \
(MIPS_BREAK_DDB_VAL << MIPS_BREAK_VAL_SHIFT))
/*
* Mininum and maximum cache sizes.
*/
#define MIPS_MIN_CACHE_SIZE (16 * 1024)
#define MIPS_MAX_CACHE_SIZE (256 * 1024)
#define MIPS_MAX_PCACHE_SIZE (32 * 1024) /* max. primary cache size */
/*
* The floating point version and status registers.
*/
#define MIPS_FPU_ID $0
#define MIPS_FPU_CSR $31
/*
* The floating point coprocessor status register bits.
*/
#define MIPS_FPU_ROUNDING_BITS 0x00000003
#define MIPS_FPU_ROUND_RN 0x00000000
#define MIPS_FPU_ROUND_RZ 0x00000001
#define MIPS_FPU_ROUND_RP 0x00000002
#define MIPS_FPU_ROUND_RM 0x00000003
#define MIPS_FPU_STICKY_BITS 0x0000007c
#define MIPS_FPU_STICKY_INEXACT 0x00000004
#define MIPS_FPU_STICKY_UNDERFLOW 0x00000008
#define MIPS_FPU_STICKY_OVERFLOW 0x00000010
#define MIPS_FPU_STICKY_DIV0 0x00000020
#define MIPS_FPU_STICKY_INVALID 0x00000040
#define MIPS_FPU_ENABLE_BITS 0x00000f80
#define MIPS_FPU_ENABLE_INEXACT 0x00000080
#define MIPS_FPU_ENABLE_UNDERFLOW 0x00000100
#define MIPS_FPU_ENABLE_OVERFLOW 0x00000200
#define MIPS_FPU_ENABLE_DIV0 0x00000400
#define MIPS_FPU_ENABLE_INVALID 0x00000800
#define MIPS_FPU_EXCEPTION_BITS 0x0003f000
#define MIPS_FPU_EXCEPTION_INEXACT 0x00001000
#define MIPS_FPU_EXCEPTION_UNDERFLOW 0x00002000
#define MIPS_FPU_EXCEPTION_OVERFLOW 0x00004000
#define MIPS_FPU_EXCEPTION_DIV0 0x00008000
#define MIPS_FPU_EXCEPTION_INVALID 0x00010000
#define MIPS_FPU_EXCEPTION_UNIMPL 0x00020000
#define MIPS_FPU_COND_BIT 0x00800000
#define MIPS_FPU_FLUSH_BIT 0x01000000 /* r4k, MBZ on r3k */
#define MIPS_FPC_MBZ_BITS 0xfe7c0000
/*
* Constants to determine if have a floating point instruction.
*/
#define MIPS_OPCODE_SHIFT 26
#define MIPS_OPCODE_C1 0x11
/* Coherence manager constants */
#define MIPS_CMGCRB_BASE 11
#define MIPS_CMGCRF_BASE (~((1 << MIPS_CMGCRB_BASE) - 1))
#endif /* _MIPS_CPUREGS_H_ */
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