src/sys/i386/i386/globals.s - view

File: [DragonFly] / src / sys / i386 / i386 / Attic / globals.s
Revision 1.20: download - view: text, annotated - select for diffs
Tue Feb 17 19:38:53 2004 UTC (9 years, 3 months ago) by dillon
Branches: MAIN
CVS tags: HEAD

Introduce an MI cpu synchronization API, redo the SMP AP startup code,
and start cleaning up deprecated IPI and clock code.  Add a MMU/TLB page
table invalidation API (pmap_inval.c) which properly synchronizes page
table changes with other cpus in SMP environments.

    * removed (unused) gd_cpu_lockid
    * remove confusing invltlb() and friends, normalize use of cpu_invltlb()
      and smp_invltlb().
    * redo the SMP AP startup code to make the system work better in
      situations where all APs do not startup.
    * add memory barrier API, cpu_mb1() and cpu_mb2().
    * remove (obsolete, no longer used) old IPI hard and stat clock forwarding
      code.
    * add a cpu synchronization API which is capable of handling multiple
      simultanious requests without deadlocking or livelocking.
    * major changes to the PMAP code to use the new invalidation API.
    * remove (unused) all_procs_ipi() and self_ipi().
    * only use all_but_self_ipi() if it is known that all AP's started up,
      otherwise use a mask.
    * remove (obsolete, no longer usde) BETTER_CLOCK code
    * remove (obsolete, no longer used) Xcpucheckstate IPI code

Testing-by: David Rhodus and others

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: * $FreeBSD: src/sys/i386/i386/globals.s,v 1.13.2.1 2000/05/16 06:58:06 dillon Exp $ 27: * $DragonFly: src/sys/i386/i386/globals.s,v 1.20 2004/02/17 19:38:53 dillon Exp $ 28: */ 29: 30: #include <machine/asmacros.h> 31: #include <machine/pmap.h> 32: 33: #include "assym.s" 34: 35: /* 36: * Define the layout of the per-cpu address space. This is 37: * "constructed" in locore.s on the BSP and in mp_machdep.c for 38: * each AP. DO NOT REORDER THESE WITHOUT UPDATING THE REST! 39: * 40: * On UP the per-cpu address space is simply placed in the data 41: * segment. 42: */ 43: .data 44: .globl CPU_prvspace, lapic 45: .set CPU_prvspace,(MPPTDI << PDRSHIFT) 46: .set lapic,CPU_prvspace + (NPTEPG-1) * PAGE_SIZE 47: 48: .globl gd_idlestack,gd_idlestack_top 49: .set gd_idlestack,PS_IDLESTACK 50: .set gd_idlestack_top,PS_IDLESTACK_TOP 51: 52: .globl globaldata 53: .set globaldata,0 54: 55: /* 56: * Define layout of the global data. On SMP this lives in 57: * the per-cpu address space, otherwise it's in the data segment. 58: */ 59: .globl gd_curthread, gd_npxthread, gd_reqflags, gd_common_tss 60: .set gd_curthread,globaldata + GD_CURTHREAD 61: .set gd_npxthread,globaldata + GD_NPXTHREAD 62: .set gd_reqflags,globaldata + GD_REQFLAGS 63: .set gd_common_tss,globaldata + GD_COMMON_TSS 64: 65: .globl gd_common_tssd, gd_tss_gdt 66: .set gd_common_tssd,globaldata + GD_COMMON_TSSD 67: .set gd_tss_gdt,globaldata + GD_TSS_GDT 68: 69: .globl gd_currentldt 70: .set gd_currentldt,globaldata + GD_CURRENTLDT 71: 72: /* 73: * The BSP version of these get setup in locore.s and pmap.c, while 74: * the AP versions are setup in mp_machdep.c. 75: */ 76: .globl gd_cpuid, gd_other_cpus 77: .globl gd_ss_eflags, gd_intr_nesting_level 78: .globl gd_CMAP1, gd_CMAP2, gd_CMAP3, gd_PMAP1 79: .globl gd_CADDR1, gd_CADDR2, gd_CADDR3, gd_PADDR1 80: .globl gd_ipending, gd_fpending, gd_cnt, gd_private_tss 81: 82: .set gd_cpuid,globaldata + GD_CPUID 83: .set gd_private_tss,globaldata + GD_PRIVATE_TSS 84: .set gd_other_cpus,globaldata + GD_OTHER_CPUS 85: .set gd_ss_eflags,globaldata + GD_SS_EFLAGS 86: .set gd_intr_nesting_level,globaldata + GD_INTR_NESTING_LEVEL 87: .set gd_CMAP1,globaldata + GD_PRV_CMAP1 88: .set gd_CMAP2,globaldata + GD_PRV_CMAP2 89: .set gd_CMAP3,globaldata + GD_PRV_CMAP3 90: .set gd_PMAP1,globaldata + GD_PRV_PMAP1 91: .set gd_CADDR1,globaldata + GD_PRV_CADDR1 92: .set gd_CADDR2,globaldata + GD_PRV_CADDR2 93: .set gd_CADDR3,globaldata + GD_PRV_CADDR3 94: .set gd_PADDR1,globaldata + GD_PRV_PADDR1 95: .set gd_fpending,globaldata + GD_FPENDING 96: .set gd_ipending,globaldata + GD_IPENDING 97: .set gd_cnt,globaldata + GD_CNT 98: 99: #if defined(APIC_IO) 100: .globl lapic_eoi, lapic_svr, lapic_tpr, lapic_irr1, lapic_ver 101: .globl lapic_icr_lo,lapic_icr_hi,lapic_isr1 102: /* 103: * Do not clutter our namespace with these unless we need them in other 104: * assembler code. The C code uses different definitions. 105: */ 106: #if 0 107: .globl lapic_id,lapic_ver,lapic_tpr,lapic_apr,lapic_ppr,lapic_eoi 108: .globl lapic_ldr,lapic_dfr,lapic_svr,lapic_isr,lapic_isr0 109: .globl lapic_isr2,lapic_isr3,lapic_isr4,lapic_isr5,lapic_isr6 110: .globl lapic_isr7,lapic_tmr,lapic_tmr0,lapic_tmr1,lapic_tmr2 111: .globl lapic_tmr3,lapic_tmr4,lapic_tmr5,lapic_tmr6,lapic_tmr7 112: .globl lapic_irr,lapic_irr0,lapic_irr1,lapic_irr2,lapic_irr3 113: .globl lapic_irr4,lapic_irr5,lapic_irr6,lapic_irr7,lapic_esr 114: .globl lapic_lvtt,lapic_pcint,lapic_lvt1 115: .globl lapic_lvt2,lapic_lvt3,lapic_ticr,lapic_tccr,lapic_tdcr 116: #endif 117: .set lapic_id, lapic + 0x020 118: .set lapic_ver, lapic + 0x030 119: .set lapic_tpr, lapic + 0x080 120: .set lapic_apr, lapic + 0x090 121: .set lapic_ppr, lapic + 0x0a0 122: .set lapic_eoi, lapic + 0x0b0 123: .set lapic_ldr, lapic + 0x0d0 124: .set lapic_dfr, lapic + 0x0e0 125: .set lapic_svr, lapic + 0x0f0 126: .set lapic_isr, lapic + 0x100 127: .set lapic_isr0, lapic + 0x100 128: .set lapic_isr1, lapic + 0x110 129: .set lapic_isr2, lapic + 0x120 130: .set lapic_isr3, lapic + 0x130 131: .set lapic_isr4, lapic + 0x140 132: .set lapic_isr5, lapic + 0x150 133: .set lapic_isr6, lapic + 0x160 134: .set lapic_isr7, lapic + 0x170 135: .set lapic_tmr, lapic + 0x180 136: .set lapic_tmr0, lapic + 0x180 137: .set lapic_tmr1, lapic + 0x190 138: .set lapic_tmr2, lapic + 0x1a0 139: .set lapic_tmr3, lapic + 0x1b0 140: .set lapic_tmr4, lapic + 0x1c0 141: .set lapic_tmr5, lapic + 0x1d0 142: .set lapic_tmr6, lapic + 0x1e0 143: .set lapic_tmr7, lapic + 0x1f0 144: .set lapic_irr, lapic + 0x200 145: .set lapic_irr0, lapic + 0x200 146: .set lapic_irr1, lapic + 0x210 147: .set lapic_irr2, lapic + 0x220 148: .set lapic_irr3, lapic + 0x230 149: .set lapic_irr4, lapic + 0x240 150: .set lapic_irr5, lapic + 0x250 151: .set lapic_irr6, lapic + 0x260 152: .set lapic_irr7, lapic + 0x270 153: .set lapic_esr, lapic + 0x280 154: .set lapic_icr_lo, lapic + 0x300 155: .set lapic_icr_hi, lapic + 0x310 156: .set lapic_lvtt, lapic + 0x320 157: .set lapic_pcint, lapic + 0x340 158: .set lapic_lvt1, lapic + 0x350 159: .set lapic_lvt2, lapic + 0x360 160: .set lapic_lvt3, lapic + 0x370 161: .set lapic_ticr, lapic + 0x380 162: .set lapic_tccr, lapic + 0x390 163: .set lapic_tdcr, lapic + 0x3e0 164: #endif 165: