1 /* $OpenBSD: cpu.h,v 1.4 1998/09/15 10:50:12 pefo Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell and Rick Macklem.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * Copyright (C) 1989 Digital Equipment Corporation.
35 * Permission to use, copy, modify, and distribute this software and
36 * its documentation for any purpose and without fee is hereby granted,
37 * provided that the above copyright notice appears in all copies.
38 * Digital Equipment Corporation makes no representations about the
39 * suitability of this software for any purpose. It is provided "as is"
40 * without express or implied warranty.
42 * from: @(#)cpu.h 8.4 (Berkeley) 1/4/94
43 * JNPR: cpu.h,v 1.9.2.2 2007/09/10 08:23:46 girish
47 #ifndef _MACHINE_CPU_H_
48 #define _MACHINE_CPU_H_
50 #include <machine/psl.h>
51 #include <machine/endian.h>
53 #define MIPS_CACHED_MEMORY_ADDR 0x80000000
54 #define MIPS_UNCACHED_MEMORY_ADDR 0xa0000000
55 #define MIPS_MAX_MEM_ADDR 0xbe000000
56 #define MIPS_RESERVED_ADDR 0xbfc80000
58 #define MIPS_KSEG0_LARGEST_PHYS 0x20000000
59 #define MIPS_CACHED_TO_PHYS(x) ((uintptr_t)(x) & 0x1fffffff)
60 #define MIPS_PHYS_TO_CACHED(x) ((uintptr_t)(x) | MIPS_CACHED_MEMORY_ADDR)
61 #define MIPS_UNCACHED_TO_PHYS(x) ((uintptr_t)(x) & 0x1fffffff)
62 #define MIPS_PHYS_TO_UNCACHED(x) ((uintptr_t)(x) | MIPS_UNCACHED_MEMORY_ADDR)
64 #define MIPS_PHYS_MASK (0x1fffffff)
65 #define MIPS_PA_2_K1VA(x) (MIPS_KSEG1_START | ((x) & MIPS_PHYS_MASK))
67 #define MIPS_VA_TO_CINDEX(x) ((uintptr_t)(x) & 0xffffff | MIPS_CACHED_MEMORY_ADDR)
68 #define MIPS_CACHED_TO_UNCACHED(x) (MIPS_PHYS_TO_UNCACHED(MIPS_CACHED_TO_PHYS(x)))
70 #define MIPS_PHYS_TO_KSEG0(x) ((uintptr_t)(x) | MIPS_KSEG0_START)
71 #define MIPS_PHYS_TO_KSEG1(x) ((uintptr_t)(x) | MIPS_KSEG1_START)
72 #define MIPS_KSEG0_TO_PHYS(x) ((uintptr_t)(x) & MIPS_PHYS_MASK)
73 #define MIPS_KSEG1_TO_PHYS(x) ((uintptr_t)(x) & MIPS_PHYS_MASK)
75 #define MIPS_IS_KSEG0_ADDR(x) \
76 (((vm_offset_t)(x) >= MIPS_KSEG0_START) && \
77 ((vm_offset_t)(x) <= MIPS_KSEG0_END))
78 #define MIPS_IS_KSEG1_ADDR(x) \
79 (((vm_offset_t)(x) >= MIPS_KSEG1_START) && \
80 ((vm_offset_t)(x) <= MIPS_KSEG1_END))
81 #define MIPS_IS_VALID_PTR(x) (MIPS_IS_KSEG0_ADDR(x) || \
82 MIPS_IS_KSEG1_ADDR(x))
87 #define SR_COP_USABILITY 0xf0000000
88 #define SR_COP_0_BIT 0x10000000
89 #define SR_COP_1_BIT 0x20000000
90 #define SR_COP_2_BIT 0x40000000
91 #define SR_RP 0x08000000
92 #define SR_FR_32 0x04000000
93 #define SR_RE 0x02000000
94 #define SR_PX 0x00800000
95 #define SR_BOOT_EXC_VEC 0x00400000
96 #define SR_TLB_SHUTDOWN 0x00200000
97 #define SR_SOFT_RESET 0x00100000
98 #define SR_DIAG_CH 0x00040000
99 #define SR_DIAG_CE 0x00020000
100 #define SR_DIAG_DE 0x00010000
101 #define SR_KX 0x00000080
102 #define SR_SX 0x00000040
103 #define SR_UX 0x00000020
104 #define SR_KSU_MASK 0x00000018
105 #define SR_KSU_USER 0x00000010
106 #define SR_KSU_SUPER 0x00000008
107 #define SR_KSU_KERNEL 0x00000000
108 #define SR_ERL 0x00000004
109 #define SR_EXL 0x00000002
110 #define SR_INT_ENAB 0x00000001
112 #define SR_INT_MASK 0x0000ff00
113 #define SOFT_INT_MASK_0 0x00000100
114 #define SOFT_INT_MASK_1 0x00000200
115 #define SR_INT_MASK_0 0x00000400
116 #define SR_INT_MASK_1 0x00000800
117 #define SR_INT_MASK_2 0x00001000
118 #define SR_INT_MASK_3 0x00002000
119 #define SR_INT_MASK_4 0x00004000
120 #define SR_INT_MASK_5 0x00008000
121 #define ALL_INT_MASK SR_INT_MASK
122 #define SOFT_INT_MASK (SOFT_INT_MASK_0 | SOFT_INT_MASK_1)
123 #define HW_INT_MASK (ALL_INT_MASK & ~SOFT_INT_MASK)
127 * The bits in the cause register.
129 * CR_BR_DELAY Exception happened in branch delay slot.
130 * CR_COP_ERR Coprocessor error.
131 * CR_IP Interrupt pending bits defined below.
132 * CR_EXC_CODE The exception type (see exception codes below).
134 #define CR_BR_DELAY 0x80000000
135 #define CR_COP_ERR 0x30000000
136 #define CR_EXC_CODE 0x0000007c
137 #define CR_EXC_CODE_SHIFT 2
138 #define CR_IPEND 0x0000ff00
141 * Cause Register Format:
143 * 31 30 29 28 27 26 25 24 23 8 7 6 2 1 0
144 * ----------------------------------------------------------------------
145 * | BD | 0| CE | 0| W2| W1| IV| IP15 - IP0 | 0| Exc Code | 0|
146 * |______________________________________________________________________
149 #define CR_INT_SOFT0 0x00000100
150 #define CR_INT_SOFT1 0x00000200
151 #define CR_INT_0 0x00000400
152 #define CR_INT_1 0x00000800
153 #define CR_INT_2 0x00001000
154 #define CR_INT_3 0x00002000
155 #define CR_INT_4 0x00004000
156 #define CR_INT_5 0x00008000
158 #define CR_INT_UART CR_INT_1
159 #define CR_INT_IPI CR_INT_2
160 #define CR_INT_CLOCK CR_INT_5
163 * The bits in the CONFIG register
165 #define CFG_K0_UNCACHED 2
167 #define CFG_K0_COHERENT 5 /* cacheable coherent */
169 #define CFG_K0_CACHED 3
173 * The bits in the context register.
175 #define CNTXT_PTE_BASE 0xff800000
176 #define CNTXT_BAD_VPN2 0x007ffff0
179 * Location of exception vectors.
181 #define RESET_EXC_VEC 0xbfc00000
182 #define TLB_MISS_EXC_VEC 0x80000000
183 #define XTLB_MISS_EXC_VEC 0x80000080
184 #define CACHE_ERR_EXC_VEC 0x80000100
185 #define GEN_EXC_VEC 0x80000180
188 * Coprocessor 0 registers:
190 #define COP_0_TLB_INDEX $0
191 #define COP_0_TLB_RANDOM $1
192 #define COP_0_TLB_LO0 $2
193 #define COP_0_TLB_LO1 $3
194 #define COP_0_TLB_CONTEXT $4
195 #define COP_0_TLB_PG_MASK $5
196 #define COP_0_TLB_WIRED $6
197 #define COP_0_INFO $7
198 #define COP_0_BAD_VADDR $8
199 #define COP_0_COUNT $9
200 #define COP_0_TLB_HI $10
201 #define COP_0_COMPARE $11
202 #define COP_0_STATUS_REG $12
203 #define COP_0_CAUSE_REG $13
204 #define COP_0_EXC_PC $14
205 #define COP_0_PRID $15
206 #define COP_0_CONFIG $16
207 #define COP_0_LLADDR $17
208 #define COP_0_WATCH_LO $18
209 #define COP_0_WATCH_HI $19
210 #define COP_0_TLB_XCONTEXT $20
211 #define COP_0_ECC $26
212 #define COP_0_CACHE_ERR $27
213 #define COP_0_TAG_LO $28
214 #define COP_0_TAG_HI $29
215 #define COP_0_ERROR_PC $30
218 * Coprocessor 0 Set 1
220 #define C0P_1_IPLLO $18
221 #define C0P_1_IPLHI $19
222 #define C0P_1_INTCTL $20
223 #define C0P_1_DERRADDR0 $26
224 #define C0P_1_DERRADDR1 $27
227 * Values for the code field in a break instruction.
229 #define BREAK_INSTR 0x0000000d
230 #define BREAK_VAL_MASK 0x03ffffc0
231 #define BREAK_VAL_SHIFT 16
232 #define BREAK_KDB_VAL 512
233 #define BREAK_SSTEP_VAL 513
234 #define BREAK_BRKPT_VAL 514
235 #define BREAK_SOVER_VAL 515
236 #define BREAK_DDB_VAL 516
237 #define BREAK_KDB (BREAK_INSTR | (BREAK_KDB_VAL << BREAK_VAL_SHIFT))
238 #define BREAK_SSTEP (BREAK_INSTR | (BREAK_SSTEP_VAL << BREAK_VAL_SHIFT))
239 #define BREAK_BRKPT (BREAK_INSTR | (BREAK_BRKPT_VAL << BREAK_VAL_SHIFT))
240 #define BREAK_SOVER (BREAK_INSTR | (BREAK_SOVER_VAL << BREAK_VAL_SHIFT))
241 #define BREAK_DDB (BREAK_INSTR | (BREAK_DDB_VAL << BREAK_VAL_SHIFT))
244 * Mininum and maximum cache sizes.
246 #define MIN_CACHE_SIZE (16 * 1024)
247 #define MAX_CACHE_SIZE (256 * 1024)
250 * The floating point version and status registers.
256 * The floating point coprocessor status register bits.
258 #define FPC_ROUNDING_BITS 0x00000003
259 #define FPC_ROUND_RN 0x00000000
260 #define FPC_ROUND_RZ 0x00000001
261 #define FPC_ROUND_RP 0x00000002
262 #define FPC_ROUND_RM 0x00000003
263 #define FPC_STICKY_BITS 0x0000007c
264 #define FPC_STICKY_INEXACT 0x00000004
265 #define FPC_STICKY_UNDERFLOW 0x00000008
266 #define FPC_STICKY_OVERFLOW 0x00000010
267 #define FPC_STICKY_DIV0 0x00000020
268 #define FPC_STICKY_INVALID 0x00000040
269 #define FPC_ENABLE_BITS 0x00000f80
270 #define FPC_ENABLE_INEXACT 0x00000080
271 #define FPC_ENABLE_UNDERFLOW 0x00000100
272 #define FPC_ENABLE_OVERFLOW 0x00000200
273 #define FPC_ENABLE_DIV0 0x00000400
274 #define FPC_ENABLE_INVALID 0x00000800
275 #define FPC_EXCEPTION_BITS 0x0003f000
276 #define FPC_EXCEPTION_INEXACT 0x00001000
277 #define FPC_EXCEPTION_UNDERFLOW 0x00002000
278 #define FPC_EXCEPTION_OVERFLOW 0x00004000
279 #define FPC_EXCEPTION_DIV0 0x00008000
280 #define FPC_EXCEPTION_INVALID 0x00010000
281 #define FPC_EXCEPTION_UNIMPL 0x00020000
282 #define FPC_COND_BIT 0x00800000
283 #define FPC_FLUSH_BIT 0x01000000
284 #define FPC_MBZ_BITS 0xfe7c0000
287 * Constants to determine if have a floating point instruction.
289 #define OPCODE_SHIFT 26
290 #define OPCODE_C1 0x11
293 * The low part of the TLB entry.
295 #define VMTLB_PF_NUM 0x3fffffc0
296 #define VMTLB_ATTR_MASK 0x00000038
297 #define VMTLB_MOD_BIT 0x00000004
298 #define VMTLB_VALID_BIT 0x00000002
299 #define VMTLB_GLOBAL_BIT 0x00000001
301 #define VMTLB_PHYS_PAGE_SHIFT 6
304 * The high part of the TLB entry.
306 #define VMTLB_VIRT_PAGE_NUM 0xffffe000
307 #define VMTLB_PID 0x000000ff
308 #define VMTLB_PID_R9K 0x00000fff
309 #define VMTLB_PID_SHIFT 0
310 #define VMTLB_VIRT_PAGE_SHIFT 12
311 #define VMTLB_VIRT_PAGE_SHIFT_R9K 13
314 * The first TLB entry that write random hits.
316 #define VMWIRED_ENTRIES 1
319 * The number of process id entries.
321 #define VMNUM_PIDS 256
324 * TLB probe return codes.
326 #define VMTLB_NOT_FOUND 0
327 #define VMTLB_FOUND 1
328 #define VMTLB_FOUND_WITH_PATCH 2
329 #define VMTLB_PROBE_ERROR 3
332 * Exported definitions unique to mips cpu support.
336 * definitions of cpu-dependent requirements
337 * referenced in generic code
339 #define COPY_SIGCODE /* copy sigcode above user stack in exec */
341 #define cpu_swapout(p) panic("cpu_swapout: can't get here");
344 #include <machine/frame.h>
346 * Arguments to hardclock and gatherstats encapsulate the previous
347 * machine state in an opaque clockframe.
349 #define clockframe trapframe /* Use normal trap frame */
351 #define CLKF_USERMODE(framep) ((framep)->sr & SR_KSU_USER)
352 #define CLKF_BASEPRI(framep) ((framep)->cpl == 0)
353 #define CLKF_PC(framep) ((framep)->pc)
354 #define CLKF_INTR(framep) (0)
355 #define MIPS_CLKF_INTR() (intr_nesting_level >= 1)
356 #define TRAPF_USERMODE(framep) (((framep)->sr & SR_KSU_USER) != 0)
357 #define TRAPF_PC(framep) ((framep)->pc)
358 #define cpu_getstack(td) ((td)->td_frame->sp)
361 * CPU identification, from PRID register.
366 #if BYTE_ORDER == BIG_ENDIAN
367 u_int pad1:8; /* reserved */
368 u_int cp_vendor:8; /* company identifier */
369 u_int cp_imp:8; /* implementation identifier */
370 u_int cp_majrev:4; /* major revision identifier */
371 u_int cp_minrev:4; /* minor revision identifier */
373 u_int cp_minrev:4; /* minor revision identifier */
374 u_int cp_majrev:4; /* major revision identifier */
375 u_int cp_imp:8; /* implementation identifier */
376 u_int cp_vendor:8; /* company identifier */
377 u_int pad1:8; /* reserved */
382 #endif /* !_LOCORE */
385 * CTL_MACHDEP definitions.
387 #define CPU_CONSDEV 1 /* dev_t: console terminal device */
388 #define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */
389 #define CPU_DISRTCSET 3 /* int: disable resettodr() call */
390 #define CPU_BOOTINFO 4 /* struct: bootinfo */
391 #define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */
392 #define CPU_MAXID 6 /* number of valid machdep ids */
394 #define CTL_MACHDEP_NAMES { \
396 { "console_device", CTLTYPE_STRUCT }, \
397 { "adjkerntz", CTLTYPE_INT }, \
398 { "disable_rtc_set", CTLTYPE_INT }, \
399 { "bootinfo", CTLTYPE_STRUCT }, \
400 { "wall_cmos_clock", CTLTYPE_INT }, \
404 * MIPS CPU types (cp_imp).
406 #define MIPS_R2000 0x01 /* MIPS R2000 CPU ISA I */
407 #define MIPS_R3000 0x02 /* MIPS R3000 CPU ISA I */
408 #define MIPS_R6000 0x03 /* MIPS R6000 CPU ISA II */
409 #define MIPS_R4000 0x04 /* MIPS R4000/4400 CPU ISA III */
410 #define MIPS_R3LSI 0x05 /* LSI Logic R3000 derivate ISA I */
411 #define MIPS_R6000A 0x06 /* MIPS R6000A CPU ISA II */
412 #define MIPS_R3IDT 0x07 /* IDT R3000 derivate ISA I */
413 #define MIPS_R10000 0x09 /* MIPS R10000/T5 CPU ISA IV */
414 #define MIPS_R4200 0x0a /* MIPS R4200 CPU (ICE) ISA III */
415 #define MIPS_R4300 0x0b /* NEC VR4300 CPU ISA III */
416 #define MIPS_R4100 0x0c /* NEC VR41xx CPU MIPS-16 ISA III */
417 #define MIPS_R8000 0x10 /* MIPS R8000 Blackbird/TFP ISA IV */
418 #define MIPS_R4600 0x20 /* QED R4600 Orion ISA III */
419 #define MIPS_R4700 0x21 /* QED R4700 Orion ISA III */
420 #define MIPS_R3TOSH 0x22 /* Toshiba R3000 based CPU ISA I */
421 #define MIPS_R5000 0x23 /* MIPS R5000 CPU ISA IV */
422 #define MIPS_RM7000 0x27 /* QED RM7000 CPU ISA IV */
423 #define MIPS_RM52X0 0x28 /* QED RM52X0 CPU ISA IV */
424 #define MIPS_VR5400 0x54 /* NEC Vr5400 CPU ISA IV+ */
425 #define MIPS_RM9000 0x34 /* E9000 CPU */
430 #define MIPS_SOFT 0x00 /* Software emulation ISA I */
431 #define MIPS_R2360 0x01 /* MIPS R2360 FPC ISA I */
432 #define MIPS_R2010 0x02 /* MIPS R2010 FPC ISA I */
433 #define MIPS_R3010 0x03 /* MIPS R3010 FPC ISA I */
434 #define MIPS_R6010 0x04 /* MIPS R6010 FPC ISA II */
435 #define MIPS_R4010 0x05 /* MIPS R4000/R4400 FPC ISA II */
436 #define MIPS_R31LSI 0x06 /* LSI Logic derivate ISA I */
437 #define MIPS_R10010 0x09 /* MIPS R10000/T5 FPU ISA IV */
438 #define MIPS_R4210 0x0a /* MIPS R4200 FPC (ICE) ISA III */
439 #define MIPS_UNKF1 0x0b /* unnanounced product cpu ISA III */
440 #define MIPS_R8000 0x10 /* MIPS R8000 Blackbird/TFP ISA IV */
441 #define MIPS_R4600 0x20 /* QED R4600 Orion ISA III */
442 #define MIPS_R3SONY 0x21 /* Sony R3000 based FPU ISA I */
443 #define MIPS_R3TOSH 0x22 /* Toshiba R3000 based FPU ISA I */
444 #define MIPS_R5010 0x23 /* MIPS R5000 based FPU ISA IV */
445 #define MIPS_RM7000 0x27 /* QED RM7000 FPU ISA IV */
446 #define MIPS_RM5230 0x28 /* QED RM52X0 based FPU ISA IV */
447 #define MIPS_RM52XX 0x28 /* QED RM52X0 based FPU ISA IV */
448 #define MIPS_VR5400 0x54 /* NEC Vr5400 FPU ISA IV+ */
451 extern union cpuprid cpu_id;
453 #define mips_proc_type() ((cpu_id.cpu.cp_vendor << 8) | cpu_id.cpu.cp_imp)
454 #define mips_set_proc_type(type) (cpu_id.cpu.cp_vendor = (type) >> 8, \
455 cpu_id.cpu.cp_imp = ((type) & 0x00ff))
456 #endif /* !_LOCORE */
458 #if defined(_KERNEL) && !defined(_LOCORE)
459 extern union cpuprid fpu_id;
464 u_int32_t mips_cp0_config1_read(void);
465 int Mips_ConfigCache(void);
466 void Mips_SetWIRED(int);
467 void Mips_SetPID(int);
468 u_int Mips_GetCOUNT(void);
469 void Mips_SetCOMPARE(u_int);
470 u_int Mips_GetCOMPARE(void);
472 void Mips_SyncCache(void);
473 void Mips_SyncDCache(vm_offset_t, int);
474 void Mips_HitSyncDCache(vm_offset_t, int);
475 void Mips_HitSyncSCache(vm_offset_t, int);
476 void Mips_IOSyncDCache(vm_offset_t, int, int);
477 void Mips_HitInvalidateDCache(vm_offset_t, int);
478 void Mips_SyncICache(vm_offset_t, int);
479 void Mips_InvalidateICache(vm_offset_t, int);
481 void Mips_TLBFlush(int);
482 void Mips_TLBFlushAddr(vm_offset_t);
483 void Mips_TLBWriteIndexed(int, struct tlb *);
484 void Mips_TLBUpdate(vm_offset_t, unsigned);
485 void Mips_TLBRead(int, struct tlb *);
486 void mips_TBIAP(int);
489 extern u_int32_t cpu_counter_interval; /* Number of counter ticks/tick */
490 extern u_int32_t cpu_counter_last; /* Last compare value loaded */
491 extern int num_tlbentries;
494 extern int intr_nesting_level;
496 #define func_0args_asmmacro(func, in) \
497 __asm __volatile ( "jalr %0" \
498 : "=r" (in) /* outputs */ \
499 : "r" (func) /* inputs */ \
502 #define func_1args_asmmacro(func, arg0) \
503 __asm __volatile ("move $4, %1;" \
506 : "r" (func), "r" (arg0) /* inputs */ \
509 #define func_2args_asmmacro(func, arg0, arg1) \
510 __asm __volatile ("move $4, %1;" \
514 : "r" (func), "r" (arg0), "r" (arg1) /* inputs */ \
515 : "$31", "$4", "$5");
517 #define func_3args_asmmacro(func, arg0, arg1, arg2) \
518 __asm __volatile ( "move $4, %1;" \
523 : "r" (func), "r" (arg0), "r" (arg1), "r" (arg2) /* inputs */ \
524 : "$31", "$4", "$5", "$6");
526 #define MachSetPID Mips_SetPID
527 #define MachTLBUpdate Mips_TLBUpdate
528 #define mips_TBIS Mips_TLBFlushAddr
529 #define MIPS_TBIAP() mips_TBIAP(num_tlbentries)
530 #define MachSetWIRED(index) Mips_SetWIRED(index)
531 #define MachTLBFlush(count) Mips_TLBFlush(count)
532 #define MachTLBGetPID(pid) (pid = Mips_TLBGetPID())
533 #define MachTLBRead(tlbno, tlbp) Mips_TLBRead(tlbno, tlbp)
534 #define MachFPTrap(sr, cause, pc) MipsFPTrap(sr, cause, pc)
537 * Enable realtime clock (always enabled).
539 #define enablertclock()
542 * Are we in an interrupt handler? required by JunOS
544 #define IN_INT_HANDLER() \
545 (curthread->td_intr_nesting_level != 0 || \
546 (curthread->td_pflags & TDP_ITHREAD))
549 * Low level access routines to CPU registers
552 void setsoftintr0(void);
553 void clearsoftintr0(void);
554 void setsoftintr1(void);
555 void clearsoftintr1(void);
558 u_int32_t mips_cp0_status_read(void);
559 void mips_cp0_status_write(u_int32_t);
561 int disableintr(void);
562 void restoreintr(int);
563 int enableintr(void);
564 int Mips_TLBGetPID(void);
568 void cpu_reset(void);
570 u_int32_t set_intr_mask(u_int32_t);
571 u_int32_t get_intr_mask(void);
572 u_int32_t get_cyclecount(void);
574 #define cpu_spinwait() /* nothing */
577 #endif /* !_MACHINE_CPU_H_ */