1da673940SJordan Gordeev /*- 2da673940SJordan Gordeev * Copyright (c) Peter Wemm <peter@netplex.com.au> 3da673940SJordan Gordeev * All rights reserved. 4da673940SJordan Gordeev * 5da673940SJordan Gordeev * Redistribution and use in source and binary forms, with or without 6da673940SJordan Gordeev * modification, are permitted provided that the following conditions 7da673940SJordan Gordeev * are met: 8da673940SJordan Gordeev * 1. Redistributions of source code must retain the above copyright 9da673940SJordan Gordeev * notice, this list of conditions and the following disclaimer. 10da673940SJordan Gordeev * 2. Redistributions in binary form must reproduce the above copyright 11da673940SJordan Gordeev * notice, this list of conditions and the following disclaimer in the 12da673940SJordan Gordeev * documentation and/or other materials provided with the distribution. 13da673940SJordan Gordeev * 14da673940SJordan Gordeev * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15da673940SJordan Gordeev * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16da673940SJordan Gordeev * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17da673940SJordan Gordeev * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18da673940SJordan Gordeev * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19da673940SJordan Gordeev * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20da673940SJordan Gordeev * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21da673940SJordan Gordeev * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22da673940SJordan Gordeev * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23da673940SJordan Gordeev * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24da673940SJordan Gordeev * SUCH DAMAGE. 25da673940SJordan Gordeev * 26da673940SJordan Gordeev * Only machine-dependant code should ever include this file. MI 27da673940SJordan Gordeev * code and header files do NOT include this file. e.g. sys/globaldata.h 28da673940SJordan Gordeev * should not include this file. 29da673940SJordan Gordeev * 30da673940SJordan Gordeev * $FreeBSD: src/sys/i386/include/globaldata.h,v 1.11.2.1 2000/05/16 06:58:10 dillon Exp $ 31da673940SJordan Gordeev */ 32da673940SJordan Gordeev 33da673940SJordan Gordeev #ifndef _MACHINE_GLOBALDATA_H_ 34da673940SJordan Gordeev #define _MACHINE_GLOBALDATA_H_ 35da673940SJordan Gordeev 36da673940SJordan Gordeev #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 37da673940SJordan Gordeev 38da673940SJordan Gordeev #ifndef _SYS_GLOBALDATA_H_ 39da673940SJordan Gordeev #include <sys/globaldata.h> /* struct globaldata */ 40da673940SJordan Gordeev #endif 41da673940SJordan Gordeev #ifndef _SYS_THREAD_H_ 42da673940SJordan Gordeev #include <sys/thread.h> /* struct thread */ 43da673940SJordan Gordeev #endif 44da673940SJordan Gordeev #ifndef _SYS_VKERNEL_H_ 45da673940SJordan Gordeev #include <sys/vkernel.h> /* vpte_t */ 46da673940SJordan Gordeev #endif 47da673940SJordan Gordeev #include <machine/segments.h> /* struct segment_descriptor */ 48*466d4f43Szrj #include <machine/tss.h> /* struct x86_64tss */ 49da673940SJordan Gordeev #include <machine/npx.h> 50da673940SJordan Gordeev 51da673940SJordan Gordeev /* 52da673940SJordan Gordeev * Note on interrupt control. Pending interrupts not yet dispatched are 53da673940SJordan Gordeev * marked in gd_fpending, gd_ipending, or gd_spending. Once dispatched 54da673940SJordan Gordeev * the interrupt's pending bit is cleared and the interrupt is masked. 55da673940SJordan Gordeev * Upon completion the interrupt is unmasked. 56da673940SJordan Gordeev * 57da673940SJordan Gordeev * For edge triggered interrupts interrupts may be enabled again at this 58da673940SJordan Gordeev * point and if they occur before the interrupt service routine is complete 59da673940SJordan Gordeev * the service routine will loop. 60da673940SJordan Gordeev * 61da673940SJordan Gordeev * The current thread's cpl is stored in the thread structure. 62da673940SJordan Gordeev * 63da673940SJordan Gordeev * Note: the embedded globaldata and/or the mdglobaldata structure 64da673940SJordan Gordeev * may exceed the size of a page. 65da673940SJordan Gordeev */ 66da673940SJordan Gordeev struct mdglobaldata { 67da673940SJordan Gordeev struct globaldata mi; 68da673940SJordan Gordeev struct user_segment_descriptor gd_common_tssd; 69da673940SJordan Gordeev struct user_segment_descriptor *gd_tss_gdt; 70da673940SJordan Gordeev struct thread *gd_npxthread; 710e6594a8SSascha Wildner struct x86_64tss gd_common_tss; 72da673940SJordan Gordeev union savefpu gd_savefpu; /* fast bcopy/zero temp fpu save area */ 73da673940SJordan Gordeev int gd_fpu_lock; /* fast bcopy/zero cpu lock */ 74da673940SJordan Gordeev int gd_fpending; /* fast interrupt pending */ 75da673940SJordan Gordeev int gd_ipending; /* normal interrupt pending */ 76da673940SJordan Gordeev int gd_spending; /* software interrupt pending */ 77da673940SJordan Gordeev int gd_sdelayed; /* delayed software ints */ 78da673940SJordan Gordeev int gd_currentldt; 79da23a592SMatthew Dillon int unused001; 80da673940SJordan Gordeev int unused002; 81da23a592SMatthew Dillon u_int unused003; 82da23a592SMatthew Dillon cpumask_t unused004; 83da673940SJordan Gordeev u_int gd_ss_eflags; 84da673940SJordan Gordeev }; 85da673940SJordan Gordeev 86da673940SJordan Gordeev #define MDGLOBALDATA_BASEALLOC_SIZE \ 87da673940SJordan Gordeev ((sizeof(struct mdglobaldata) + PAGE_MASK) & ~PAGE_MASK) 88da673940SJordan Gordeev #define MDGLOBALDATA_BASEALLOC_PAGES \ 89da673940SJordan Gordeev (MDGLOBALDATA_BASEALLOC_SIZE / PAGE_SIZE) 90da673940SJordan Gordeev #define MDGLOBALDATA_PAD \ 91da673940SJordan Gordeev (MDGLOBALDATA_BASEALLOC_SIZE - sizeof(struct mdglobaldata)) 92da673940SJordan Gordeev 93da673940SJordan Gordeev /* 94da673940SJordan Gordeev * This is the upper (0xff800000) address space layout that is per-cpu. 95da673940SJordan Gordeev * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for 96da673940SJordan Gordeev * each AP. genassym helps export this to the assembler code. 97da673940SJordan Gordeev * 98da673940SJordan Gordeev * WARNING! This structure must be segment-aligned and portions within the 99da673940SJordan Gordeev * structure must also be segment-aligned. The structure typically 100da673940SJordan Gordeev * takes 3 segments per cpu (12MB). 101da673940SJordan Gordeev */ 102da673940SJordan Gordeev #define PRIVATESPACE_SEGPAD \ 103da673940SJordan Gordeev (SEG_SIZE - \ 104da673940SJordan Gordeev ((sizeof(struct mdglobaldata) + MDGLOBALDATA_PAD + PAGE_SIZE * 4 + \ 105da673940SJordan Gordeev UPAGES * PAGE_SIZE) % SEG_SIZE)) \ 106da673940SJordan Gordeev 107da673940SJordan Gordeev struct privatespace { 108da673940SJordan Gordeev /* main data page */ 109da673940SJordan Gordeev struct mdglobaldata mdglobaldata; 110da673940SJordan Gordeev char __filler0[MDGLOBALDATA_PAD]; 111da673940SJordan Gordeev 112da673940SJordan Gordeev /* idle stack (UPAGES pages) */ 113da673940SJordan Gordeev char idlestack[UPAGES * PAGE_SIZE]; 114da673940SJordan Gordeev }; 115da673940SJordan Gordeev #define mdcpu ((struct mdglobaldata *)_get_mycpu()) 116da673940SJordan Gordeev 117da673940SJordan Gordeev #endif 118da673940SJordan Gordeev 119da673940SJordan Gordeev #ifdef _KERNEL 120da673940SJordan Gordeev 121da673940SJordan Gordeev extern struct privatespace *CPU_prvspace; 122da673940SJordan Gordeev 123da673940SJordan Gordeev #endif 124da673940SJordan Gordeev 125da673940SJordan Gordeev #endif 126