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 x86_64tss */ 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 or gd_spending. Once dispatched the interrupt's 59 * pending bit is cleared and the interrupt is masked. Upon completion 60 * 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 * Note: the embedded globaldata and/or the mdglobaldata structure 69 * may exceed the size of a page. 70 */ 71 struct mdglobaldata { 72 struct globaldata mi; 73 struct user_segment_descriptor gd_common_tssd; 74 struct user_segment_descriptor *gd_tss_gdt; 75 struct thread *gd_npxthread; 76 struct x86_64tss gd_common_tss; 77 union savefpu gd_savefpu; /* fast bcopy/zero temp fpu save area */ 78 int gd_fpu_lock; /* fast bcopy/zero cpu lock */ 79 int gd_fpending; /* fast interrupt pending */ 80 int unused002; 81 int gd_spending; /* software interrupt pending */ 82 int gd_sdelayed; /* delayed software ints */ 83 int gd_currentldt; 84 int gd_private_tss; 85 u_int unused001; 86 u_int gd_other_cpus; 87 u_int gd_ss_eflags; 88 pt_entry_t *gd_CMAP1; 89 pt_entry_t *gd_CMAP2; 90 pt_entry_t *gd_CMAP3; 91 pt_entry_t *gd_PMAP1; 92 caddr_t gd_CADDR1; 93 caddr_t gd_CADDR2; 94 caddr_t gd_CADDR3; 95 pt_entry_t *gd_PADDR1; 96 u_int gd_acpi_id; 97 u_int gd_apic_id; 98 register_t gd_scratch_rsp; 99 register_t gd_rsp0; 100 register_t gd_user_fs; /* current user fs in MSR */ 101 register_t gd_user_gs; /* current user gs in MSR */ 102 }; 103 104 #define MDGLOBALDATA_BASEALLOC_SIZE \ 105 ((sizeof(struct mdglobaldata) + PAGE_MASK) & ~PAGE_MASK) 106 #define MDGLOBALDATA_BASEALLOC_PAGES \ 107 (MDGLOBALDATA_BASEALLOC_SIZE / PAGE_SIZE) 108 #define MDGLOBALDATA_PAD \ 109 (MDGLOBALDATA_BASEALLOC_SIZE - sizeof(struct mdglobaldata)) 110 111 /* 112 * This is the upper (0xff800000) address space layout that is per-cpu. 113 * It is setup in locore.s and pmap.c for the BSP and in mp_machdep.c for 114 * each AP. genassym helps export this to the assembler code. 115 * 116 * JG WARNING! page-bounded fields are hardwired for SMPpt[] setup in 117 * i386/i386/mp_machdep.c and locore.s. 118 */ 119 struct privatespace { 120 /* JG TODO: fix comments describing layout */ 121 /* page 0 - data page */ 122 struct mdglobaldata mdglobaldata; 123 char __filler0[MDGLOBALDATA_PAD]; 124 125 /* page 1..4 - CPAGE1,CPAGE2,CPAGE3,PPAGE1 */ 126 char CPAGE1[PAGE_SIZE]; /* SMPpt[1] */ 127 char CPAGE2[PAGE_SIZE]; /* SMPpt[2] */ 128 char CPAGE3[PAGE_SIZE]; /* SMPpt[3] */ 129 char PPAGE1[PAGE_SIZE]; /* SMPpt[4] */ 130 131 /* page 5..4+UPAGES - idle stack (UPAGES pages) */ 132 char idlestack[UPAGES * PAGE_SIZE]; /* SMPpt[5..] */ 133 }; 134 #define mdcpu ((struct mdglobaldata *)_get_mycpu()) 135 136 #endif 137 138 #ifdef _KERNEL 139 140 extern struct privatespace CPU_prvspace[]; 141 142 #endif 143 144 #endif 145