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cpu.h revision 1.76 
      1 /*	$NetBSD: cpu.h,v 1.76 2001/11/17 08:21:43 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)cpu.h	5.4 (Berkeley) 5/9/91
     39  */
     40 
     41 #ifndef _I386_CPU_H_
     42 #define _I386_CPU_H_
     43 
     44 #if defined(_KERNEL_OPT)
     45 #include "opt_multiprocessor.h"
     46 #include "opt_lockdebug.h"
     47 #endif
     48 
     49 /*
     50  * Definitions unique to i386 cpu support.
     51  */
     52 #include <machine/psl.h>
     53 #include <machine/frame.h>
     54 #include <machine/segments.h>
     55 
     56 #include <sys/sched.h>
     57 
     58 struct i386_cache_info {
     59 	int		cai_index;
     60 	u_int32_t	cai_desc;
     61 	u_int		cai_totalsize;
     62 	u_int		cai_associativity;
     63 	u_int		cai_linesize;
     64 };
     65 
     66 #define	CAI_ITLB	0		/* Instruction TLB (4K pages) */
     67 #define	CAI_ITLB2	1		/* Instruction TLB (2/4M pages) */
     68 #define	CAI_DTLB	2		/* Data TLB (4K pages) */
     69 #define	CAI_DTLB2	3		/* Data TLB (2/4M pages) */
     70 #define	CAI_ICACHE	4		/* Instruction cache */
     71 #define	CAI_DCACHE	5		/* Data cache */
     72 #define	CAI_L2CACHE	6		/* Level 2 cache */
     73 
     74 #define	CAI_COUNT	7
     75 
     76 struct cpu_info {
     77 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     78 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
     79 	u_long ci_spin_locks;		/* # of spin locks held */
     80 	u_long ci_simple_locks;		/* # of simple locks held */
     81 #endif
     82 
     83 	u_int ci_cflush_lsize;	/* CFLUSH insn line size */
     84 	struct i386_cache_info ci_cinfo[CAI_COUNT];
     85 };
     86 
     87 #ifdef _KERNEL
     88 extern struct cpu_info cpu_info_store;
     89 
     90 #define	curcpu()			(&cpu_info_store)
     91 #endif
     92 
     93 /*
     94  * definitions of cpu-dependent requirements
     95  * referenced in generic code
     96  */
     97 #define	cpu_swapin(p)			/* nothing */
     98 #define	cpu_number()			0
     99 
    100 /*
    101  * Arguments to hardclock, softclock and statclock
    102  * encapsulate the previous machine state in an opaque
    103  * clockframe; for now, use generic intrframe.
    104  *
    105  * XXX intrframe has a lot of gunk we don't need.
    106  */
    107 #define clockframe intrframe
    108 
    109 #define	CLKF_USERMODE(frame)	USERMODE((frame)->if_cs, (frame)->if_eflags)
    110 #define	CLKF_BASEPRI(frame)	((frame)->if_ppl == 0)
    111 #define	CLKF_PC(frame)		((frame)->if_eip)
    112 #define	CLKF_INTR(frame)	((frame)->if_ppl & (1 << IPL_TAGINTR))
    113 
    114 /*
    115  * This is used during profiling to integrate system time.  It can safely
    116  * assume that the process is resident.
    117  */
    118 #define	PROC_PC(p)		((p)->p_md.md_regs->tf_eip)
    119 
    120 /*
    121  * Preempt the current process if in interrupt from user mode,
    122  * or after the current trap/syscall if in system mode.
    123  */
    124 int	want_resched;		/* resched() was called */
    125 #define	need_resched(ci)	(want_resched = 1, setsoftast())
    126 
    127 /*
    128  * Give a profiling tick to the current process when the user profiling
    129  * buffer pages are invalid.  On the i386, request an ast to send us
    130  * through trap(), marking the proc as needing a profiling tick.
    131  */
    132 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, setsoftast())
    133 
    134 /*
    135  * Notify the current process (p) that it has a signal pending,
    136  * process as soon as possible.
    137  */
    138 #define	signotify(p)		setsoftast()
    139 
    140 /*
    141  * We need a machine-independent name for this.
    142  */
    143 #define	DELAY(x)		delay(x)
    144 
    145 /*
    146  * pull in #defines for kinds of processors
    147  */
    148 #include <machine/cputypes.h>
    149 
    150 struct cpu_nocpuid_nameclass {
    151 	int cpu_vendor;
    152 	const char *cpu_vendorname;
    153 	const char *cpu_name;
    154 	int cpu_class;
    155 	void (*cpu_setup) __P((void));
    156 	void (*cpu_cacheinfo) __P((struct cpu_info *));
    157 };
    158 
    159 
    160 struct cpu_cpuid_nameclass {
    161 	const char *cpu_id;
    162 	int cpu_vendor;
    163 	const char *cpu_vendorname;
    164 	struct cpu_cpuid_family {
    165 		int cpu_class;
    166 		const char *cpu_models[CPU_MAXMODEL+2];
    167 		void (*cpu_setup) __P((void));
    168 		void (*cpu_cacheinfo) __P((struct cpu_info *));
    169 	} cpu_family[CPU_MAXFAMILY - CPU_MINFAMILY + 1];
    170 };
    171 
    172 #ifdef _KERNEL
    173 extern int biosbasemem;
    174 extern int biosextmem;
    175 extern int cpu;
    176 extern int cpu_class;
    177 extern int cpu_feature;
    178 extern int cpu_id;
    179 extern char cpu_vendor[];
    180 extern int cpuid_level;
    181 extern const struct cpu_nocpuid_nameclass i386_nocpuid_cpus[];
    182 extern const struct cpu_cpuid_nameclass i386_cpuid_cpus[];
    183 
    184 extern int i386_use_fxsave;
    185 extern int i386_has_sse;
    186 extern int i386_has_sse2;
    187 
    188 /* machdep.c */
    189 void	delay __P((int));
    190 void	dumpconf __P((void));
    191 void	cpu_reset __P((void));
    192 void	i386_proc0_tss_ldt_init __P((void));
    193 void	i386_bufinit __P((void));
    194 
    195 /* locore.s */
    196 struct region_descriptor;
    197 void	lgdt __P((struct region_descriptor *));
    198 void	fillw __P((short, void *, size_t));
    199 
    200 struct pcb;
    201 void	savectx __P((struct pcb *));
    202 void	switch_exit __P((struct proc *));
    203 void	proc_trampoline __P((void));
    204 
    205 /* clock.c */
    206 void	initrtclock __P((void));
    207 void	startrtclock __P((void));
    208 
    209 /* npx.c */
    210 void	npxdrop __P((void));
    211 void	npxsave __P((void));
    212 
    213 /* vm_machdep.c */
    214 int kvtop __P((caddr_t));
    215 
    216 #if !defined(_LKM)
    217 #include "opt_math_emulate.h"
    218 #endif
    219 #ifdef MATH_EMULATE
    220 /* math_emulate.c */
    221 int	math_emulate __P((struct trapframe *));
    222 #endif
    223 
    224 #if !defined(_LKM)
    225 #include "opt_user_ldt.h"
    226 #endif
    227 #ifdef USER_LDT
    228 /* sys_machdep.h */
    229 int	i386_get_ldt __P((struct proc *, void *, register_t *));
    230 int	i386_set_ldt __P((struct proc *, void *, register_t *));
    231 #endif
    232 
    233 /* isa_machdep.c */
    234 void	isa_defaultirq __P((void));
    235 int	isa_nmi __P((void));
    236 
    237 #if !defined(_LKM)
    238 #include "opt_vm86.h"
    239 #endif
    240 #ifdef VM86
    241 /* vm86.c */
    242 void	vm86_gpfault __P((struct proc *, int));
    243 #endif /* VM86 */
    244 
    245 /* consinit.c */
    246 void kgdb_port_init __P((void));
    247 
    248 /* bus_machdep.c */
    249 void i386_bus_space_init __P((void));
    250 void i386_bus_space_mallocok __P((void));
    251 
    252 #endif /* _KERNEL */
    253 
    254 /*
    255  * CTL_MACHDEP definitions.
    256  */
    257 #define	CPU_CONSDEV		1	/* dev_t: console terminal device */
    258 #define	CPU_BIOSBASEMEM		2	/* int: bios-reported base mem (K) */
    259 #define	CPU_BIOSEXTMEM		3	/* int: bios-reported ext. mem (K) */
    260 #define	CPU_NKPDE		4	/* int: number of kernel PDEs */
    261 #define	CPU_BOOTED_KERNEL	5	/* string: booted kernel name */
    262 #define CPU_DISKINFO		6	/* disk geometry information */
    263 #define CPU_FPU_PRESENT		7	/* FPU is present */
    264 #define	CPU_OSFXSR		8	/* OS uses FXSAVE/FXRSTOR */
    265 #define	CPU_SSE			9	/* OS/CPU supports SSE */
    266 #define	CPU_SSE2		10	/* OS/CPU supports SSE2 */
    267 #define CPU_TMLR_MODE		11
    268 #define CPU_TMLR_FREQUENCY	12
    269 #define CPU_TMLR_VOLTAGE	13
    270 #define CPU_TMLR_PERCENTAGE	14
    271 #define	CPU_MAXID		15	/* number of valid machdep ids */
    272 
    273 #define	CTL_MACHDEP_NAMES { \
    274 	{ 0, 0 }, \
    275 	{ "console_device", CTLTYPE_STRUCT }, \
    276 	{ "biosbasemem", CTLTYPE_INT }, \
    277 	{ "biosextmem", CTLTYPE_INT }, \
    278 	{ "nkpde", CTLTYPE_INT }, \
    279 	{ "booted_kernel", CTLTYPE_STRING }, \
    280 	{ "diskinfo", CTLTYPE_STRUCT }, \
    281 	{ "fpu_present", CTLTYPE_INT }, \
    282 	{ "osfxsr", CTLTYPE_INT }, \
    283 	{ "sse", CTLTYPE_INT }, \
    284 	{ "sse2", CTLTYPE_INT }, \
    285 	{ "tm_longrun_mode", CTLTYPE_INT }, \
    286 	{ "tm_longrun_frequency", CTLTYPE_INT }, \
    287 	{ "tm_longrun_voltage", CTLTYPE_INT }, \
    288 	{ "tm_longrun_percentage", CTLTYPE_INT }, \
    289 }
    290 
    291 
    292 /*
    293  * Structure for CPU_DISKINFO sysctl call.
    294  * XXX this should be somewhere else.
    295  */
    296 #define MAX_BIOSDISKS	16
    297 
    298 struct disklist {
    299 	int dl_nbiosdisks;			   /* number of bios disks */
    300 	struct biosdisk_info {
    301 		int bi_dev;			   /* BIOS device # (0x80 ..) */
    302 		int bi_cyl;			   /* cylinders on disk */
    303 		int bi_head;			   /* heads per track */
    304 		int bi_sec;			   /* sectors per track */
    305 		u_int64_t bi_lbasecs;		   /* total sec. (iff ext13) */
    306 #define BIFLAG_INVALID		0x01
    307 #define BIFLAG_EXTINT13		0x02
    308 		int bi_flags;
    309 	} dl_biosdisks[MAX_BIOSDISKS];
    310 
    311 	int dl_nnativedisks;			   /* number of native disks */
    312 	struct nativedisk_info {
    313 		char ni_devname[16];		   /* native device name */
    314 		int ni_nmatches; 		   /* # of matches w/ BIOS */
    315 		int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */
    316 	} dl_nativedisks[1];			   /* actually longer */
    317 };
    318 
    319 #endif /* !_I386_CPU_H_ */
    320