/*-
 * Copyright (c) 1995 Bruce D. Evans.
 * Copyright (c) 2008 The DragonFly Project.
 * All rights reserved.
 *
 * 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 author nor the names of contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD: src/sys/amd64/include/md_var.h,v 1.71 2004/01/29 00:05:03 peter Exp $
 */

#ifndef _MACHINE_MD_VAR_H_
#define _MACHINE_MD_VAR_H_

#include <sys/types.h>

#include <machine/globaldata.h>

/*
 * Miscellaneous machine-dependent declarations.
 */

extern  u_long  atdevbase;      /* offset in virtual memory of ISA io mem */
extern  int     busdma_swi_pending;
extern  void    (*cpu_idle_hook)(void);
void            cpu_idle(void);
extern  u_int   cpu_exthigh;
extern  u_int   cpu_feature;    /* CPUID_* features */
extern  u_int   cpu_feature2;   /* CPUID2_* features */
extern  u_int   via_feature_rng;
extern  u_int   via_feature_xcrypt;
extern  u_int   amd_feature;
extern  u_int   amd_feature2;
extern  u_long  cpu_ia32_arch_caps;
extern  u_int   cpu_clflush_line_size;
extern  u_int   cpu_stdext_feature;
extern  u_int   cpu_stdext_feature2;
extern  u_int   cpu_stdext_feature3;
extern  u_int   cpu_thermal_feature;
extern  u_int   cpu_mwait_feature;
extern  u_int   cpu_mwait_extemu;
extern  u_int   cpu_fxsr;
extern  u_int   cpu_xsave;
extern  u_int   cpu_high;
extern  u_int   cpu_id;
extern  u_int   cpu_procinfo;
extern  u_int   cpu_procinfo2;
extern  char    cpu_vendor[];
extern  u_int   cpu_vendor_id;
extern  char    kstack[];
extern  char    sigcode[];
extern  int     szsigcode;
extern  uint64_t *vm_page_dump;
extern  vm_offset_t vm_page_dump_size;

extern vm_paddr_t intel_graphics_stolen_base;
extern vm_paddr_t intel_graphics_stolen_size;
void pci_early_quirks(void);

typedef void alias_for_inthand_t(u_int cs, u_int ef, u_int esp, u_int ss);
struct  thread;
struct  reg;
struct  fpreg;
struct  dbreg;
struct __mcontext;
struct dumperinfo;

void    printcpuinfo(void);
void    identify_cpu(void);
void    panicifcpuunsupported(void);

void    busdma_swi(void);
void    cpu_gdinit (struct mdglobaldata *gd, int cpu);
void    cpu_idle_restore (void);        /* cannot be called from C */
void    cpu_setregs(void);
void    doreti_iret(void) __asm(__STRING(doreti_iret));
void    doreti_iret_fault(void) __asm(__STRING(doreti_iret_fault));
void    enable_sse(void);
void    fillw(int /*u_short*/ pat, void *base, size_t cnt);
void    pagezero(void *addr);
void    setidt_global(int idx, alias_for_inthand_t *func,
            int typ, int dpl, int ist);
void    setidt(int idx, alias_for_inthand_t *func,
            int typ, int dpl, int ist, int cpu);
int     user_dbreg_trap(void);
void    fpstate_drop(struct thread *td);

int     npxdna(void);
void    npxdna_quick(struct thread *td);
void    npxpush(struct __mcontext *mctx);
void    npxpop(struct __mcontext *mctx);
void    kernel_fpu_begin(void);
void    kernel_fpu_end(void);

void    cpu_heavy_restore (void);
void    cpu_kthread_restore (void);/* cannot be called from C */

thread_t cpu_exit_switch (struct thread *next);

void    syscall2 (struct trapframe *);
void    trap_handle_userenter(struct thread *);
void    trap_handle_userexit(struct trapframe *, int);
void    minidumpsys(struct dumperinfo *);
void    dump_add_page(vm_paddr_t);
void    dump_drop_page(vm_paddr_t);
boolean_t cpu_mwait_hint_valid(uint32_t);
void    cpu_mwait_cx_no_bmsts(void);
void    cpu_mwait_cx_no_bmarb(void);

#endif /* !_MACHINE_MD_VAR_H_ */