kernel - Attempt to fix i386 wire_count panic
[dragonfly.git] / sys / platform / pc32 / include / globaldata.h
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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 *
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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 *
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30 * $FreeBSD: src/sys/i386/include/globaldata.h,v 1.11.2.1 2000/05/16 06:58:10 dillon Exp $
31 */
32
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33#ifndef _MACHINE_GLOBALDATA_H_
34#define _MACHINE_GLOBALDATA_H_
35
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36#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
37
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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
f8334305 44#include <machine/segments.h> /* struct segment_descriptor */
f8334305 45#include <machine/tss.h> /* struct i386tss */
f8334305 46#include <machine/npx.h>
85100692 47
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48/*
49 * Note on interrupt control. Pending interrupts not yet dispatched are
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50 * marked in gd_fpending or gd_spending. Once dispatched the interrupt's
51 * pending bit is cleared and the interrupt is masked. Upon completion
52 * the interrupt is unmasked.
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53 *
54 * For edge triggered interrupts interrupts may be enabled again at this
55 * point and if they occur before the interrupt service routine is complete
56 * the service routine will loop.
57 *
58 * The current thread's cpl is stored in the thread structure.
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59 *
60 * Note: the embedded globaldata and/or the mdglobaldata structure
61 * may exceed the size of a page.
ef0fdad1 62 */
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63struct pv_entry;
64
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65struct mdglobaldata {
66 struct globaldata mi;
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67 struct segment_descriptor gd_common_tssd;
68 struct segment_descriptor *gd_tss_gdt;
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69 struct thread *gd_npxthread;
70 struct i386tss gd_common_tss;
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71 union savefpu gd_savefpu; /* fast bcopy/zero temp fpu save area */
72 int gd_fpu_lock; /* fast bcopy/zero cpu lock */
c263294b 73 int unused004;
da23a592 74 int unused001;
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75 int gd_spending; /* software interrupt pending */
76 int gd_sdelayed; /* delayed software ints */
ee66458c 77 int gd_currentldt;
a2a5ad0d 78 int gd_private_tss;
2bb9cc6f 79 struct pv_entry *gd_freepv;
da23a592 80 u_int unused003;
984263bc 81 u_int gd_ss_eflags;
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82 pt_entry_t *gd_CMAP1;
83 pt_entry_t *gd_CMAP2;
84 pt_entry_t *gd_CMAP3;
85 pt_entry_t *gd_PMAP1;
c1692ddf 86 pt_entry_t *gd_GDMAP1; /* per-cpu whole page table map */
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87 caddr_t gd_CADDR1;
88 caddr_t gd_CADDR2;
89 caddr_t gd_CADDR3;
90 unsigned *gd_PADDR1;
c1692ddf 91 unsigned *gd_GDADDR1; /* per-cpu whole page table map va */
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92 u_int gd_acpi_id;
93 u_int gd_apic_id;
7d4d6fdb 94 cpumask_t gd_invltlb_ret;
c263294b 95 u_int gd_ipending[6];
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96};
97
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98#define MDGLOBALDATA_BASEALLOC_SIZE \
99 ((sizeof(struct mdglobaldata) + PAGE_MASK) & ~PAGE_MASK)
100#define MDGLOBALDATA_BASEALLOC_PAGES \
101 (MDGLOBALDATA_BASEALLOC_SIZE / PAGE_SIZE)
102#define MDGLOBALDATA_PAD \
103 (MDGLOBALDATA_BASEALLOC_SIZE - sizeof(struct mdglobaldata))
104
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105/*
106 * This is the upper (0xff800000) address space layout that is per-cpu.
107 * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for
108 * each AP. genassym helps export this to the assembler code.
b3f81036 109 *
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110 * WARNING! page-bounded fields and page table indexes are hardwired
111 * for SMPpt[] setup in i386/i386/mp_machdep.c and locore.s.
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112 *
113 * WARNING! sizeof(privatespace[SMP_MAXCPU]) must fit in the KVA
c1692ddf 114 * reserved for the SMPpt page table (typically one page table page = 4MB).
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115 *
116 * WARNING! This structure must be a multiple of PAGE_SIZE.
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117 */
118struct privatespace {
81c04d07 119 /* main data page */
85100692 120 struct mdglobaldata mdglobaldata;
81c04d07 121 char __filler0[MDGLOBALDATA_PAD];
984263bc 122
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123 /* mapping pages - CPAGE1,CPAGE2,CPAGE3,PPAGE1 */
124 char CPAGE1[PAGE_SIZE]; /* SMPpt[n+0] */
125 char CPAGE2[PAGE_SIZE]; /* SMPpt[n+1] */
126 char CPAGE3[PAGE_SIZE]; /* SMPpt[n+2] */
127 char PPAGE1[PAGE_SIZE]; /* SMPpt[n+3] */
984263bc 128
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129 /* idle stack (UPAGES pages) */
130 char idlestack[UPAGES * PAGE_SIZE]; /* SMPpt[n+4] */
984263bc 131};
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132#define mdcpu ((struct mdglobaldata *)_get_mycpu())
133
134#endif
135
136#ifdef _KERNEL
984263bc 137
8ad65e08 138extern struct privatespace CPU_prvspace[];
3020e3be 139
ec12abe0 140#endif
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141
142#endif