1 /*- 2 * Copyright (c) Peter Wemm <peter@netplex.com.au> 3 * Copyright (c) 2008 The DragonFly Project. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * Only machine-dependant code should ever include this file. MI 28 * code and header files do NOT include this file. e.g. sys/globaldata.h 29 * should not include this file. 30 * 31 * $FreeBSD: src/sys/i386/include/globaldata.h,v 1.11.2.1 2000/05/16 06:58:10 dillon Exp $ 32 * $DragonFly: src/sys/platform/pc64/include/globaldata.h,v 1.2 2008/08/29 17:07:17 dillon Exp $ 33 */ 34 35 #ifndef _MACHINE_GLOBALDATA_H_ 36 #define _MACHINE_GLOBALDATA_H_ 37 38 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 39 40 #ifndef _SYS_GLOBALDATA_H_ 41 #include <sys/globaldata.h> /* struct globaldata */ 42 #endif 43 #ifndef _SYS_THREAD_H_ 44 #include <sys/thread.h> /* struct thread */ 45 #endif 46 #ifndef _MACHINE_SEGMENTS_H_ 47 #include <machine/segments.h> /* struct user_segment_descriptor */ 48 #endif 49 #ifndef _MACHINE_TSS_H_ 50 #include <machine/tss.h> /* struct amd64tss */ 51 #endif 52 #ifndef _MACHINE_NPX_H_ 53 #include <machine/npx.h> 54 #endif 55 56 /* 57 * Note on interrupt control. Pending interrupts not yet dispatched are 58 * marked in gd_fpending, gd_ipending, or gd_spending. Once dispatched 59 * the interrupt's pending bit is cleared and the interrupt is masked. 60 * Upon completion the interrupt is unmasked. 61 * 62 * For edge triggered interrupts interrupts may be enabled again at this 63 * point and if they occur before the interrupt service routine is complete 64 * the service routine will loop. 65 * 66 * The current thread's cpl is stored in the thread structure. 67 */ 68 struct mdglobaldata { 69 struct globaldata mi; 70 struct user_segment_descriptor gd_common_tssd; 71 struct user_segment_descriptor *gd_tss_gdt; 72 struct thread *gd_npxthread; 73 struct amd64tss gd_common_tss; 74 union savefpu gd_savefpu; /* fast bcopy/zero temp fpu save area */ 75 int gd_fpu_lock; /* fast bcopy/zero cpu lock */ 76 int gd_fpending; /* fast interrupt pending */ 77 int gd_ipending; /* normal interrupt pending */ 78 int gd_spending; /* software interrupt pending */ 79 int gd_sdelayed; /* delayed software ints */ 80 int gd_currentldt; 81 int gd_private_tss; 82 u_int gd_unused001; 83 u_int gd_other_cpus; 84 u_int gd_ss_eflags; 85 pt_entry_t *gd_CMAP1; 86 pt_entry_t *gd_CMAP2; 87 pt_entry_t *gd_CMAP3; 88 pt_entry_t *gd_PMAP1; 89 caddr_t gd_CADDR1; 90 caddr_t gd_CADDR2; 91 caddr_t gd_CADDR3; 92 pt_entry_t *gd_PADDR1; 93 register_t gd_scratch_rsp; 94 register_t gd_rsp0; 95 register_t gd_user_fs; /* current user fs in MSR */ 96 register_t gd_user_gs; /* current user gs in MSR */ 97 }; 98 99 #define MDGLOBALDATA_BASEALLOC_SIZE \ 100 ((sizeof(struct mdglobaldata) + PAGE_MASK) & ~PAGE_MASK) 101 #define MDGLOBALDATA_BASEALLOC_PAGES \ 102 (MDGLOBALDATA_BASEALLOC_SIZE / PAGE_SIZE) 103 #define MDGLOBALDATA_PAD \ 104 (MDGLOBALDATA_BASEALLOC_SIZE - sizeof(struct mdglobaldata)) 105 106 /* 107 * This is the upper (0xff800000) address space layout that is per-cpu. 108 * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for 109 * each AP. genassym helps export this to the assembler code. 110 * 111 * JG WARNING! page-bounded fields are hardwired for SMPpt[] setup in 112 * i386/i386/mp_machdep.c and locore.s. 113 */ 114 struct privatespace { 115 /* JG TODO: fix comments describing layout */ 116 /* page 0 - data page */ 117 struct mdglobaldata mdglobaldata; 118 char __filler0[MDGLOBALDATA_PAD]; 119 120 /* page 1..4 - CPAGE1,CPAGE2,CPAGE3,PPAGE1 */ 121 char CPAGE1[PAGE_SIZE]; /* SMPpt[1] */ 122 char CPAGE2[PAGE_SIZE]; /* SMPpt[2] */ 123 char CPAGE3[PAGE_SIZE]; /* SMPpt[3] */ 124 char PPAGE1[PAGE_SIZE]; /* SMPpt[4] */ 125 126 /* page 5..4+UPAGES - idle stack (UPAGES pages) */ 127 char idlestack[UPAGES * PAGE_SIZE]; /* SMPpt[5..] */ 128 }; 129 #define mdcpu ((struct mdglobaldata *)_get_mycpu()) 130 131 #endif 132 133 #ifdef _KERNEL 134 135 extern struct privatespace CPU_prvspace[]; 136 137 #endif 138 139 #endif 140