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minix/sys/arch/x86/include/cpu.h
Ben Gras 1cd76c7513 sys/arch/x86/include updates 
. primary purpose is to synchronize with <ieeefp.h> which
	  expects a fp_prec from sys/arch/x86/include/ieeefp.h
2013-01-15 12:14:01 +00:00

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/* $NetBSD: cpu.h,v 1.52 2012/07/15 15:17:56 dsl Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
*
* @(#)cpu.h 5.4 (Berkeley) 5/9/91
*/
#ifndef _X86_CPU_H_
#define _X86_CPU_H_
#if defined(_KERNEL) || defined(_STANDALONE)
#include <sys/types.h>
#else
#include <stdbool.h>
#endif /* _KERNEL || _STANDALONE */
#if defined(_KERNEL) || defined(_KMEMUSER)
#if defined(_KERNEL_OPT)
#include "opt_xen.h"
#ifdef i386
#include "opt_user_ldt.h"
#include "opt_vm86.h"
#endif
#endif
/*
* Definitions unique to x86 cpu support.
*/
#include <machine/frame.h>
#include <machine/pte.h>
#include <machine/segments.h>
#include <machine/tss.h>
#include <machine/intrdefs.h>
#include <x86/cacheinfo.h>
#include <sys/cpu_data.h>
#include <sys/evcnt.h>
#include <sys/device_if.h> /* for device_t */
#ifdef XEN
#include <xen/xen-public/xen.h>
#include <xen/xen-public/event_channel.h>
#include <sys/mutex.h>
#endif /* XEN */
struct intrsource;
struct pmap;
struct device;
#ifdef __x86_64__
#define i386tss x86_64_tss
#endif
#define NIOPORTS 1024 /* # of ports we allow to be mapped */
#define IOMAPSIZE (NIOPORTS / 8) /* I/O bitmap size in bytes */
/*
* a bunch of this belongs in cpuvar.h; move it later..
*/
struct cpu_info {
struct cpu_data ci_data; /* MI per-cpu data */
device_t ci_dev; /* pointer to our device */
struct cpu_info *ci_self; /* self-pointer */
volatile struct vcpu_info *ci_vcpu; /* for XEN */
void *ci_tlog_base; /* Trap log base */
int32_t ci_tlog_offset; /* Trap log current offset */
/*
* Will be accessed by other CPUs.
*/
struct cpu_info *ci_next; /* next cpu */
struct lwp *ci_curlwp; /* current owner of the processor */
struct lwp *ci_fpcurlwp; /* current owner of the FPU */
int ci_fpsaving; /* save in progress */
int ci_fpused; /* XEN: FPU was used by curlwp */
cpuid_t ci_cpuid; /* our CPU ID */
int _unused;
uint32_t ci_acpiid; /* our ACPI/MADT ID */
uint32_t ci_initapicid; /* our intitial APIC ID */
/*
* Private members.
*/
struct evcnt ci_tlb_evcnt; /* tlb shootdown counter */
struct pmap *ci_pmap; /* current pmap */
int ci_need_tlbwait; /* need to wait for TLB invalidations */
int ci_want_pmapload; /* pmap_load() is needed */
volatile int ci_tlbstate; /* one of TLBSTATE_ states. see below */
#define TLBSTATE_VALID 0 /* all user tlbs are valid */
#define TLBSTATE_LAZY 1 /* tlbs are valid but won't be kept uptodate */
#define TLBSTATE_STALE 2 /* we might have stale user tlbs */
int ci_curldt; /* current LDT descriptor */
int ci_nintrhand; /* number of H/W interrupt handlers */
uint64_t ci_scratch;
uintptr_t ci_pmap_data[128 / sizeof(uintptr_t)];
#ifdef XEN
struct iplsource *ci_isources[NIPL];
u_long ci_evtmask[NR_EVENT_CHANNELS]; /* events allowed on this CPU */
#else
struct intrsource *ci_isources[MAX_INTR_SOURCES];
#endif
volatile int ci_mtx_count; /* Negative count of spin mutexes */
volatile int ci_mtx_oldspl; /* Old SPL at this ci_idepth */
/* The following must be aligned for cmpxchg8b. */
struct {
uint32_t ipending;
int ilevel;
} ci_istate __aligned(8);
#define ci_ipending ci_istate.ipending
#define ci_ilevel ci_istate.ilevel
int ci_idepth;
void * ci_intrstack;
uint32_t ci_imask[NIPL];
uint32_t ci_iunmask[NIPL];
uint32_t ci_flags; /* flags; see below */
uint32_t ci_ipis; /* interprocessor interrupts pending */
uint32_t sc_apic_version; /* local APIC version */
uint32_t ci_signature; /* X86 cpuid type */
uint32_t ci_vendor[4]; /* vendor string */
uint32_t ci_cpu_serial[3]; /* PIII serial number */
volatile uint32_t ci_lapic_counter;
uint32_t ci_feat_val[5]; /* X86 CPUID feature bits
* [0] basic features %edx
* [1] basic features %ecx
* [2] extended features %edx
* [3] extended features %ecx
* [4] VIA padlock features
*/
const struct cpu_functions *ci_func; /* start/stop functions */
struct trapframe *ci_ddb_regs;
u_int ci_cflush_lsize; /* CFLUSH insn line size */
struct x86_cache_info ci_cinfo[CAI_COUNT];
union descriptor *ci_gdt;
#ifdef i386
struct i386tss ci_doubleflt_tss;
struct i386tss ci_ddbipi_tss;
#endif
#ifdef PAE
uint32_t ci_pae_l3_pdirpa; /* PA of L3 PD */
pd_entry_t * ci_pae_l3_pdir; /* VA pointer to L3 PD */
#endif
#if defined(XEN) && (defined(PAE) || defined(__x86_64__))
/* Currently active user PGD (can't use rcr3() with Xen) */
pd_entry_t * ci_kpm_pdir; /* per-cpu PMD (va) */
paddr_t ci_kpm_pdirpa; /* per-cpu PMD (pa) */
kmutex_t ci_kpm_mtx;
#if defined(__x86_64__)
/* per-cpu version of normal_pdes */
pd_entry_t * ci_normal_pdes[3]; /* Ok to hardcode. only for x86_64 && XEN */
paddr_t ci_xen_current_user_pgd;
#endif /* __x86_64__ */
#endif /* XEN et.al */
char *ci_doubleflt_stack;
char *ci_ddbipi_stack;
#ifndef XEN
struct evcnt ci_ipi_events[X86_NIPI];
#else /* XEN */
struct evcnt ci_ipi_events[XEN_NIPIS];
evtchn_port_t ci_ipi_evtchn;
#endif /* XEN */
device_t ci_frequency; /* Frequency scaling technology */
device_t ci_padlock; /* VIA PadLock private storage */
device_t ci_temperature; /* Intel coretemp(4) or equivalent */
device_t ci_vm; /* Virtual machine guest driver */
struct i386tss ci_tss; /* Per-cpu TSS; shared among LWPs */
char ci_iomap[IOMAPSIZE]; /* I/O Bitmap */
int ci_tss_sel; /* TSS selector of this cpu */
/*
* The following two are actually region_descriptors,
* but that would pollute the namespace.
*/
uintptr_t ci_suspend_gdt;
uint16_t ci_suspend_gdt_padding;
uintptr_t ci_suspend_idt;
uint16_t ci_suspend_idt_padding;
uint16_t ci_suspend_tr;
uint16_t ci_suspend_ldt;
uintptr_t ci_suspend_fs;
uintptr_t ci_suspend_gs;
uintptr_t ci_suspend_kgs;
uintptr_t ci_suspend_efer;
uintptr_t ci_suspend_reg[12];
uintptr_t ci_suspend_cr0;
uintptr_t ci_suspend_cr2;
uintptr_t ci_suspend_cr3;
uintptr_t ci_suspend_cr4;
uintptr_t ci_suspend_cr8;
/* The following must be in a single cache line. */
int ci_want_resched __aligned(64);
int ci_padout __aligned(64);
};
/*
* Macros to handle (some) trapframe registers for common x86 code.
*/
#ifdef __x86_64__
#define X86_TF_RAX(tf) tf->tf_rax
#define X86_TF_RDX(tf) tf->tf_rdx
#define X86_TF_RSP(tf) tf->tf_rsp
#define X86_TF_RIP(tf) tf->tf_rip
#define X86_TF_RFLAGS(tf) tf->tf_rflags
#else
#define X86_TF_RAX(tf) tf->tf_eax
#define X86_TF_RDX(tf) tf->tf_edx
#define X86_TF_RSP(tf) tf->tf_esp
#define X86_TF_RIP(tf) tf->tf_eip
#define X86_TF_RFLAGS(tf) tf->tf_eflags
#endif
/*
* Processor flag notes: The "primary" CPU has certain MI-defined
* roles (mostly relating to hardclock handling); we distinguish
* betwen the processor which booted us, and the processor currently
* holding the "primary" role just to give us the flexibility later to
* change primaries should we be sufficiently twisted.
*/
#define CPUF_BSP 0x0001 /* CPU is the original BSP */
#define CPUF_AP 0x0002 /* CPU is an AP */
#define CPUF_SP 0x0004 /* CPU is only processor */
#define CPUF_PRIMARY 0x0008 /* CPU is active primary processor */
#define CPUF_SYNCTSC 0x0800 /* Synchronize TSC */
#define CPUF_PRESENT 0x1000 /* CPU is present */
#define CPUF_RUNNING 0x2000 /* CPU is running */
#define CPUF_PAUSE 0x4000 /* CPU is paused in DDB */
#define CPUF_GO 0x8000 /* CPU should start running */
#endif /* _KERNEL || __KMEMUSER */
#ifdef _KERNEL
/*
* We statically allocate the CPU info for the primary CPU (or,
* the only CPU on uniprocessors), and the primary CPU is the
* first CPU on the CPU info list.
*/
extern struct cpu_info cpu_info_primary;
extern struct cpu_info *cpu_info_list;
#define CPU_INFO_ITERATOR int
#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = cpu_info_list; \
ci != NULL; ci = ci->ci_next
#define CPU_STARTUP(_ci, _target) ((_ci)->ci_func->start(_ci, _target))
#define CPU_STOP(_ci) ((_ci)->ci_func->stop(_ci))
#define CPU_START_CLEANUP(_ci) ((_ci)->ci_func->cleanup(_ci))
#if !defined(__GNUC__) || defined(_MODULE)
/* For non-GCC and modules */
struct cpu_info *x86_curcpu(void);
void cpu_set_curpri(int);
# ifdef __GNUC__
lwp_t *x86_curlwp(void) __attribute__ ((const));
# else
lwp_t *x86_curlwp(void);
# endif
#endif
#define cpu_number() (cpu_index(curcpu()))
#define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY)
#define X86_AST_GENERIC 0x01
#define X86_AST_PREEMPT 0x02
#define aston(l, why) ((l)->l_md.md_astpending |= (why))
#define cpu_did_resched(l) ((l)->l_md.md_astpending &= ~X86_AST_PREEMPT)
void cpu_boot_secondary_processors(void);
void cpu_init_idle_lwps(void);
void cpu_init_msrs(struct cpu_info *, bool);
void cpu_load_pmap(struct pmap *, struct pmap *);
void cpu_broadcast_halt(void);
void cpu_kick(struct cpu_info *);
#define curcpu() x86_curcpu()
#define curlwp x86_curlwp()
#define curpcb ((struct pcb *)lwp_getpcb(curlwp))
/*
* Arguments to hardclock, softclock and statclock
* encapsulate the previous machine state in an opaque
* clockframe; for now, use generic intrframe.
*/
struct clockframe {
struct intrframe cf_if;
};
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the i386, request an ast to send us
* through trap(), marking the proc as needing a profiling tick.
*/
extern void cpu_need_proftick(struct lwp *l);
/*
* Notify the LWP l that it has a signal pending, process as soon as
* possible.
*/
extern void cpu_signotify(struct lwp *);
/*
* We need a machine-independent name for this.
*/
extern void (*delay_func)(unsigned int);
struct timeval;
#define DELAY(x) (*delay_func)(x)
#define delay(x) (*delay_func)(x)
extern int biosbasemem;
extern int biosextmem;
extern int cputype;
extern int cpuid_level;
extern int cpu_class;
extern char cpu_brand_string[];
extern int use_pae;
extern int i386_use_fxsave;
extern int i386_has_sse;
extern int i386_has_sse2;
extern void (*x86_cpu_idle)(void);
#define cpu_idle() (*x86_cpu_idle)()
/* machdep.c */
void dumpconf(void);
void cpu_reset(void);
void i386_proc0_tss_ldt_init(void);
void dumpconf(void);
void cpu_reset(void);
void x86_64_proc0_tss_ldt_init(void);
void x86_64_init_pcb_tss_ldt(struct cpu_info *);
/* longrun.c */
u_int tmx86_get_longrun_mode(void);
void tmx86_get_longrun_status(u_int *, u_int *, u_int *);
void tmx86_init_longrun(void);
/* identcpu.c */
void cpu_probe(struct cpu_info *);
void cpu_identify(struct cpu_info *);
/* cpu_topology.c */
void x86_cpu_topology(struct cpu_info *);
/* vm_machdep.c */
void cpu_proc_fork(struct proc *, struct proc *);
/* locore.s */
struct region_descriptor;
void lgdt(struct region_descriptor *);
#ifdef XEN
void lgdt_finish(void);
#endif
struct pcb;
void savectx(struct pcb *);
void lwp_trampoline(void);
#ifdef XEN
void startrtclock(void);
void xen_delay(unsigned int);
void xen_initclocks(void);
void xen_suspendclocks(struct cpu_info *);
void xen_resumeclocks(struct cpu_info *);
#else
/* clock.c */
void initrtclock(u_long);
void startrtclock(void);
void i8254_delay(unsigned int);
void i8254_microtime(struct timeval *);
void i8254_initclocks(void);
#endif
/* cpu.c */
void cpu_probe_features(struct cpu_info *);
/* npx.c */
void npxsave_lwp(struct lwp *, bool);
void npxsave_cpu(bool);
/* vm_machdep.c */
paddr_t kvtop(void *);
#ifdef USER_LDT
/* sys_machdep.h */
int x86_get_ldt(struct lwp *, void *, register_t *);
int x86_set_ldt(struct lwp *, void *, register_t *);
#endif
/* isa_machdep.c */
void isa_defaultirq(void);
int isa_nmi(void);
#ifdef VM86
/* vm86.c */
void vm86_gpfault(struct lwp *, int);
#endif /* VM86 */
/* consinit.c */
void kgdb_port_init(void);
/* bus_machdep.c */
void x86_bus_space_init(void);
void x86_bus_space_mallocok(void);
#endif /* _KERNEL */
#if defined(_KERNEL) || defined(_KMEMUSER)
#include <machine/psl.h> /* Must be after struct cpu_info declaration */
#endif /* _KERNEL || __KMEMUSER */
/*
* CTL_MACHDEP definitions.
*/
#define CPU_CONSDEV 1 /* dev_t: console terminal device */
#define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */
#define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */
/* CPU_NKPDE 4 obsolete: int: number of kernel PDEs */
#define CPU_BOOTED_KERNEL 5 /* string: booted kernel name */
#define CPU_DISKINFO 6 /* struct disklist *:
* disk geometry information */
#define CPU_FPU_PRESENT 7 /* int: FPU is present */
#define CPU_OSFXSR 8 /* int: OS uses FXSAVE/FXRSTOR */
#define CPU_SSE 9 /* int: OS/CPU supports SSE */
#define CPU_SSE2 10 /* int: OS/CPU supports SSE2 */
#define CPU_TMLR_MODE 11 /* int: longrun mode
* 0: minimum frequency
* 1: economy
* 2: performance
* 3: maximum frequency
*/
#define CPU_TMLR_FREQUENCY 12 /* int: current frequency */
#define CPU_TMLR_VOLTAGE 13 /* int: curret voltage */
#define CPU_TMLR_PERCENTAGE 14 /* int: current clock percentage */
#define CPU_MAXID 15 /* number of valid machdep ids */
/*
* Structure for CPU_DISKINFO sysctl call.
* XXX this should be somewhere else.
*/
#define MAX_BIOSDISKS 16
struct disklist {
int dl_nbiosdisks; /* number of bios disks */
struct biosdisk_info {
int bi_dev; /* BIOS device # (0x80 ..) */
int bi_cyl; /* cylinders on disk */
int bi_head; /* heads per track */
int bi_sec; /* sectors per track */
uint64_t bi_lbasecs; /* total sec. (iff ext13) */
#define BIFLAG_INVALID 0x01
#define BIFLAG_EXTINT13 0x02
int bi_flags;
} dl_biosdisks[MAX_BIOSDISKS];
int dl_nnativedisks; /* number of native disks */
struct nativedisk_info {
char ni_devname[16]; /* native device name */
int ni_nmatches; /* # of matches w/ BIOS */
int ni_biosmatches[MAX_BIOSDISKS]; /* indices in dl_biosdisks */
} dl_nativedisks[1]; /* actually longer */
};
#endif /* !_X86_CPU_H_ */
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