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 * $DragonFly: src/sys/platform/pc64/include/globaldata.h,v 1.1 2007/08/21 19:45:45 corecode Exp $ 32 */ 33 34 #ifndef _MACHINE_GLOBALDATA_H_ 35 #define _MACHINE_GLOBALDATA_H_ 36 37 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 38 39 #ifndef _SYS_GLOBALDATA_H_ 40 #include <sys/globaldata.h> /* struct globaldata */ 41 #endif 42 #ifndef _SYS_THREAD_H_ 43 #include <sys/thread.h> /* struct thread */ 44 #endif 45 #ifndef _MACHINE_SEGMENTS_H_ 46 #include <machine/segments.h> /* struct segment_descriptor */ 47 #endif 48 #ifndef _MACHINE_TSS_H_ 49 #include <machine/tss.h> /* struct i386tss */ 50 #endif 51 52 /* 53 * Note on interrupt control. Pending interrupts not yet dispatched are 54 * marked in gd_fpending, gd_ipending, or gd_spending. Once dispatched 55 * the interrupt's pending bit is cleared and the interrupt is masked. 56 * Upon completion the interrupt is unmasked. 57 * 58 * For edge triggered interrupts interrupts may be enabled again at this 59 * point and if they occur before the interrupt service routine is complete 60 * the service routine will loop. 61 * 62 * The current thread's cpl is stored in the thread structure. 63 */ 64 struct mdglobaldata { 65 struct globaldata mi; 66 struct segment_descriptor gd_common_tssd; 67 struct segment_descriptor *gd_tss_gdt; 68 struct thread *gd_npxthread; 69 struct amd64tss gd_common_tss; 70 int gd_fpending; /* fast interrupt pending */ 71 int gd_ipending; /* normal interrupt pending */ 72 int gd_spending; /* software interrupt pending */ 73 int gd_sdelayed; /* delayed software ints */ 74 int gd_currentldt; 75 int gd_private_tss; 76 u_int gd_unused001; 77 u_int gd_other_cpus; 78 u_int gd_ss_eflags; 79 pt_entry_t *gd_CMAP1; 80 pt_entry_t *gd_CMAP2; 81 pt_entry_t *gd_CMAP3; 82 pt_entry_t *gd_PMAP1; 83 caddr_t gd_CADDR1; 84 caddr_t gd_CADDR2; 85 caddr_t gd_CADDR3; 86 unsigned *gd_PADDR1; 87 }; 88 89 /* 90 * This is the upper (0xff800000) address space layout that is per-cpu. 91 * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for 92 * each AP. genassym helps export this to the assembler code. 93 * 94 * WARNING! page-bounded fields are hardwired for SMPpt[] setup in 95 * i386/i386/mp_machdep.c and locore.s. 96 */ 97 struct privatespace { 98 /* page 0 - data page */ 99 struct mdglobaldata mdglobaldata; 100 char __filler0[PAGE_SIZE - sizeof(struct mdglobaldata)]; 101 102 /* page 1..4 - CPAGE1,CPAGE2,CPAGE3,PPAGE1 */ 103 char CPAGE1[PAGE_SIZE]; /* SMPpt[1] */ 104 char CPAGE2[PAGE_SIZE]; /* SMPpt[2] */ 105 char CPAGE3[PAGE_SIZE]; /* SMPpt[3] */ 106 char PPAGE1[PAGE_SIZE]; /* SMPpt[4] */ 107 108 /* page 5..4+UPAGES - idle stack (UPAGES pages) */ 109 char idlestack[UPAGES * PAGE_SIZE]; /* SMPpt[5..] */ 110 }; 111 #define mdcpu ((struct mdglobaldata *)_get_mycpu()) 112 113 #endif 114 115 #ifdef _KERNEL 116 117 extern struct privatespace CPU_prvspace[]; 118 119 #endif 120 121 #endif 122