sys/platform/vkernel64/include/globaldata.h

   1 /*-
   2  * Copyright (c) Peter Wemm <peter@netplex.com.au>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      Only machine-dependant code should ever include this file.  MI
  27  *      code and header files do NOT include this file.  e.g. sys/globaldata.h
  28  *      should not include this file.
  29  *
  30  * $FreeBSD: src/sys/i386/include/globaldata.h,v 1.11.2.1 2000/05/16 06:58:10 dillon Exp $
  31  */
  32
  33 #ifndef _MACHINE_GLOBALDATA_H_
  34 #define _MACHINE_GLOBALDATA_H_
  35
  36 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
  37
  38 #ifndef _SYS_GLOBALDATA_H_
  39 #include <sys/globaldata.h>     /* struct globaldata */
  40 #endif
  41 #ifndef _SYS_THREAD_H_
  42 #include <sys/thread.h>         /* struct thread */
  43 #endif
  44 #ifndef _SYS_VKERNEL_H_
  45 #include <sys/vkernel.h>        /* vpte_t */
  46 #endif
  47 #include <machine/segments.h>   /* struct segment_descriptor */
  48 #include <machine/tss.h>        /* struct x86_64tss */
  49 #include <machine/npx.h>
  50
  51 /*
  52  * Note on interrupt control.  Pending interrupts not yet dispatched are
  53  * marked in gd_fpending, gd_ipending, or gd_spending.  Once dispatched
  54  * the interrupt's pending bit is cleared and the interrupt is masked.
  55  * Upon completion the interrupt is unmasked.
  56  *
  57  * For edge triggered interrupts interrupts may be enabled again at this
  58  * point and if they occur before the interrupt service routine is complete
  59  * the service routine will loop.
  60  *
  61  * The current thread's cpl is stored in the thread structure.
  62  *
  63  * Note: the embedded globaldata and/or the mdglobaldata structure
  64  * may exceed the size of a page.
  65  */
  66 struct mdglobaldata {
  67         struct globaldata mi;
  68         struct user_segment_descriptor gd_common_tssd;
  69         struct user_segment_descriptor *gd_tss_gdt;
  70         struct thread   *gd_npxthread;
  71         struct x86_64tss gd_common_tss;
  72         union savefpu   gd_savefpu;     /* fast bcopy/zero temp fpu save area */
  73         int             gd_fpu_lock;    /* fast bcopy/zero cpu lock */
  74         int             gd_fpending;    /* fast interrupt pending */
  75         int             gd_ipending;    /* normal interrupt pending */
  76         int             gd_spending;    /* software interrupt pending */
  77         int             gd_sdelayed;    /* delayed software ints */
  78         int             gd_currentldt;
  79         int             unused001;
  80         int             unused002;
  81         u_int           unused003;
  82         cpumask_t       unused004;
  83         u_int           gd_ss_eflags;
  84 };
  85
  86 #define MDGLOBALDATA_BASEALLOC_SIZE     \
  87         ((sizeof(struct mdglobaldata) + PAGE_MASK) & ~PAGE_MASK)
  88 #define MDGLOBALDATA_BASEALLOC_PAGES    \
  89         (MDGLOBALDATA_BASEALLOC_SIZE / PAGE_SIZE)
  90 #define MDGLOBALDATA_PAD                \
  91         (MDGLOBALDATA_BASEALLOC_SIZE - sizeof(struct mdglobaldata))
  92
  93 /*
  94  * This is the upper (0xff800000) address space layout that is per-cpu.
  95  * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for
  96  * each AP.  genassym helps export this to the assembler code.
  97  *
  98  * WARNING!  This structure must be segment-aligned and portions within the
  99  *           structure must also be segment-aligned.  The structure typically
 100  *           takes 3 segments per cpu (12MB).
 101  */
 102 #define PRIVATESPACE_SEGPAD     \
 103         (SEG_SIZE -             \
 104         ((sizeof(struct mdglobaldata) + MDGLOBALDATA_PAD + PAGE_SIZE * 4 +  \
 105         UPAGES * PAGE_SIZE) % SEG_SIZE))                                    \
 106
 107 struct privatespace {
 108         /* main data page */
 109         struct mdglobaldata mdglobaldata;
 110         char            __filler0[MDGLOBALDATA_PAD];
 111
 112         /* idle stack (UPAGES pages) */
 113         char            idlestack[UPAGES * PAGE_SIZE];
 114 };
 115 #define mdcpu           ((struct mdglobaldata *)_get_mycpu())
 116
 117 #endif
 118
 119 #ifdef _KERNEL
 120
 121 extern struct privatespace *CPU_prvspace;
 122
 123 #endif
 124
 125 #endif