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/* $MidnightBSD$ */ |
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/*- |
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* Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org> |
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* Copyright (c) 2001-2012 Mitsuru IWASAKI <iwasaki@jp.freebsd.org> |
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* Copyright (c) 2003 Peter Wemm |
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* Copyright (c) 2008-2012 Jung-uk Kim <jkim@FreeBSD.org> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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|
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#include <sys/cdefs.h> |
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__FBSDID("$FreeBSD: stable/11/sys/x86/acpica/acpi_wakeup.c 347700 2019-05-16 14:42:16Z markj $"); |
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|
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#if defined(__amd64__) |
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#define DEV_APIC |
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#else |
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#include "opt_apic.h" |
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#endif |
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|
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#include <sys/param.h> |
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#include <sys/bus.h> |
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#include <sys/eventhandler.h> |
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#include <sys/kernel.h> |
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#include <sys/malloc.h> |
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#include <sys/memrange.h> |
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#include <sys/smp.h> |
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#include <sys/systm.h> |
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#include <sys/cons.h> |
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|
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#include <vm/vm.h> |
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#include <vm/pmap.h> |
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|
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#include <machine/clock.h> |
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#include <machine/cpu.h> |
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#include <machine/intr_machdep.h> |
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#include <machine/md_var.h> |
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#include <x86/mca.h> |
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#include <machine/pcb.h> |
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#include <machine/specialreg.h> |
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#include <x86/ucode.h> |
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|
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#ifdef DEV_APIC |
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#include <x86/apicreg.h> |
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#include <x86/apicvar.h> |
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#endif |
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#ifdef SMP |
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#include <machine/smp.h> |
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#include <machine/vmparam.h> |
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#endif |
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|
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#include <contrib/dev/acpica/include/acpi.h> |
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|
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#include <dev/acpica/acpivar.h> |
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|
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#include "acpi_wakecode.h" |
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#include "acpi_wakedata.h" |
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|
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/* Make sure the code is less than a page and leave room for the stack. */ |
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CTASSERT(sizeof(wakecode) < PAGE_SIZE - 1024); |
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|
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extern int acpi_resume_beep; |
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extern int acpi_reset_video; |
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extern int acpi_susp_bounce; |
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|
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#ifdef SMP |
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extern struct susppcb **susppcbs; |
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static cpuset_t suspcpus; |
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#else |
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static struct susppcb **susppcbs; |
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#endif |
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|
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static void *acpi_alloc_wakeup_handler(void **); |
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static void acpi_stop_beep(void *); |
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|
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#ifdef SMP |
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static int acpi_wakeup_ap(struct acpi_softc *, int); |
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static void acpi_wakeup_cpus(struct acpi_softc *); |
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#endif |
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|
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#ifdef __amd64__ |
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#define ACPI_WAKEPAGES 4 |
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#else |
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#define ACPI_WAKEPAGES 1 |
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#endif |
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|
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#define WAKECODE_FIXUP(offset, type, val) do { \ |
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type *addr; \ |
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addr = (type *)(sc->acpi_wakeaddr + (offset)); \ |
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*addr = val; \ |
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} while (0) |
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|
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static void |
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acpi_stop_beep(void *arg) |
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{ |
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|
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if (acpi_resume_beep != 0) |
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timer_spkr_release(); |
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} |
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|
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#ifdef SMP |
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static int |
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acpi_wakeup_ap(struct acpi_softc *sc, int cpu) |
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{ |
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struct pcb *pcb; |
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int vector = (sc->acpi_wakephys >> 12) & 0xff; |
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int apic_id = cpu_apic_ids[cpu]; |
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int ms; |
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|
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pcb = &susppcbs[cpu]->sp_pcb; |
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WAKECODE_FIXUP(wakeup_pcb, struct pcb *, pcb); |
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WAKECODE_FIXUP(wakeup_gdt, uint16_t, pcb->pcb_gdt.rd_limit); |
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WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, pcb->pcb_gdt.rd_base); |
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|
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ipi_startup(apic_id, vector); |
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|
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/* Wait up to 5 seconds for it to resume. */ |
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for (ms = 0; ms < 5000; ms++) { |
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if (!CPU_ISSET(cpu, &suspended_cpus)) |
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return (1); /* return SUCCESS */ |
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DELAY(1000); |
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} |
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return (0); /* return FAILURE */ |
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} |
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|
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#define WARMBOOT_TARGET 0 |
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#define WARMBOOT_OFF (KERNBASE + 0x0467) |
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#define WARMBOOT_SEG (KERNBASE + 0x0469) |
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|
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#define CMOS_REG (0x70) |
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#define CMOS_DATA (0x71) |
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#define BIOS_RESET (0x0f) |
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#define BIOS_WARM (0x0a) |
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|
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static void |
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acpi_wakeup_cpus(struct acpi_softc *sc) |
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{ |
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uint32_t mpbioswarmvec; |
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int cpu; |
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u_char mpbiosreason; |
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|
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/* save the current value of the warm-start vector */ |
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mpbioswarmvec = *((uint32_t *)WARMBOOT_OFF); |
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outb(CMOS_REG, BIOS_RESET); |
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mpbiosreason = inb(CMOS_DATA); |
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|
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/* setup a vector to our boot code */ |
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*((volatile u_short *)WARMBOOT_OFF) = WARMBOOT_TARGET; |
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*((volatile u_short *)WARMBOOT_SEG) = sc->acpi_wakephys >> 4; |
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outb(CMOS_REG, BIOS_RESET); |
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outb(CMOS_DATA, BIOS_WARM); /* 'warm-start' */ |
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|
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/* Wake up each AP. */ |
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for (cpu = 1; cpu < mp_ncpus; cpu++) { |
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if (!CPU_ISSET(cpu, &suspcpus)) |
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continue; |
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if (acpi_wakeup_ap(sc, cpu) == 0) { |
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/* restore the warmstart vector */ |
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*(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; |
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panic("acpi_wakeup: failed to resume AP #%d (PHY #%d)", |
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cpu, cpu_apic_ids[cpu]); |
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} |
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} |
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|
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/* restore the warmstart vector */ |
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*(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; |
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|
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outb(CMOS_REG, BIOS_RESET); |
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outb(CMOS_DATA, mpbiosreason); |
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} |
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#endif |
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|
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int |
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acpi_sleep_machdep(struct acpi_softc *sc, int state) |
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{ |
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ACPI_STATUS status; |
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struct pcb *pcb; |
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#ifdef __amd64__ |
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struct pcpu *pc; |
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int i; |
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#endif |
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|
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if (sc->acpi_wakeaddr == 0ul) |
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return (-1); /* couldn't alloc wake memory */ |
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|
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#ifdef SMP |
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suspcpus = all_cpus; |
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CPU_CLR(PCPU_GET(cpuid), &suspcpus); |
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#endif |
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|
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if (acpi_resume_beep != 0) |
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timer_spkr_acquire(); |
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|
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AcpiSetFirmwareWakingVector(sc->acpi_wakephys, 0); |
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|
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intr_suspend(); |
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|
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pcb = &susppcbs[0]->sp_pcb; |
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if (savectx(pcb)) { |
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#ifdef __amd64__ |
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fpususpend(susppcbs[0]->sp_fpususpend); |
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#else |
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npxsuspend(susppcbs[0]->sp_fpususpend); |
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#endif |
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#ifdef SMP |
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if (!CPU_EMPTY(&suspcpus) && suspend_cpus(suspcpus) == 0) { |
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device_printf(sc->acpi_dev, "Failed to suspend APs\n"); |
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return (0); /* couldn't sleep */ |
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} |
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#endif |
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#ifdef __amd64__ |
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hw_ibrs_active = 0; |
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hw_ssb_active = 0; |
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cpu_stdext_feature3 = 0; |
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CPU_FOREACH(i) { |
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pc = pcpu_find(i); |
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pc->pc_ibpb_set = 0; |
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} |
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#endif |
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|
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WAKECODE_FIXUP(resume_beep, uint8_t, (acpi_resume_beep != 0)); |
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WAKECODE_FIXUP(reset_video, uint8_t, (acpi_reset_video != 0)); |
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|
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#ifdef __amd64__ |
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WAKECODE_FIXUP(wakeup_efer, uint64_t, rdmsr(MSR_EFER) & |
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~(EFER_LMA)); |
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#else |
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WAKECODE_FIXUP(wakeup_cr4, register_t, pcb->pcb_cr4); |
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#endif |
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WAKECODE_FIXUP(wakeup_pcb, struct pcb *, pcb); |
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WAKECODE_FIXUP(wakeup_gdt, uint16_t, pcb->pcb_gdt.rd_limit); |
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WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, pcb->pcb_gdt.rd_base); |
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|
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/* Call ACPICA to enter the desired sleep state */ |
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if (state == ACPI_STATE_S4 && sc->acpi_s4bios) |
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status = AcpiEnterSleepStateS4bios(); |
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else |
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status = AcpiEnterSleepState(state); |
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if (ACPI_FAILURE(status)) { |
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device_printf(sc->acpi_dev, |
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"AcpiEnterSleepState failed - %s\n", |
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AcpiFormatException(status)); |
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return (0); /* couldn't sleep */ |
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} |
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|
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if (acpi_susp_bounce) |
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resumectx(pcb); |
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|
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for (;;) |
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ia32_pause(); |
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} else { |
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/* |
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* Re-initialize console hardware as soon as possibe. |
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* No console output (e.g. printf) is allowed before |
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* this point. |
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*/ |
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cnresume(); |
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#ifdef __amd64__ |
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fpuresume(susppcbs[0]->sp_fpususpend); |
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#else |
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npxresume(susppcbs[0]->sp_fpususpend); |
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#endif |
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} |
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|
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return (1); /* wakeup successfully */ |
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} |
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|
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int |
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acpi_wakeup_machdep(struct acpi_softc *sc, int state, int sleep_result, |
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int intr_enabled) |
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{ |
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|
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if (sleep_result == -1) |
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return (sleep_result); |
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|
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if (!intr_enabled) { |
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/* Wakeup MD procedures in interrupt disabled context */ |
| 297 |
if (sleep_result == 1) { |
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ucode_reload(); |
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pmap_init_pat(); |
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initializecpu(); |
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PCPU_SET(switchtime, 0); |
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PCPU_SET(switchticks, ticks); |
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#ifdef DEV_APIC |
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lapic_xapic_mode(); |
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#endif |
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#ifdef SMP |
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if (!CPU_EMPTY(&suspcpus)) |
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acpi_wakeup_cpus(sc); |
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#endif |
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} |
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|
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#ifdef SMP |
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if (!CPU_EMPTY(&suspcpus)) |
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resume_cpus(suspcpus); |
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#endif |
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mca_resume(); |
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#ifdef __amd64__ |
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if (vmm_resume_p != NULL) |
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vmm_resume_p(); |
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#endif |
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intr_resume(/*suspend_cancelled*/false); |
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|
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AcpiSetFirmwareWakingVector(0, 0); |
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} else { |
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/* Wakeup MD procedures in interrupt enabled context */ |
| 326 |
if (sleep_result == 1 && mem_range_softc.mr_op != NULL && |
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mem_range_softc.mr_op->reinit != NULL) |
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mem_range_softc.mr_op->reinit(&mem_range_softc); |
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} |
| 330 |
|
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return (sleep_result); |
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} |
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|
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static void * |
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acpi_alloc_wakeup_handler(void *wakepages[ACPI_WAKEPAGES]) |
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{ |
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int i; |
| 338 |
|
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memset(wakepages, 0, ACPI_WAKEPAGES * sizeof(*wakepages)); |
| 340 |
|
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/* |
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* Specify the region for our wakeup code. We want it in the low 1 MB |
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* region, excluding real mode IVT (0-0x3ff), BDA (0x400-0x4ff), EBDA |
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* (less than 128KB, below 0xa0000, must be excluded by SMAP and DSDT), |
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* and ROM area (0xa0000 and above). The temporary page tables must be |
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* page-aligned. |
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*/ |
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for (i = 0; i < ACPI_WAKEPAGES; i++) { |
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wakepages[i] = contigmalloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT, |
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0x500, 0xa0000, PAGE_SIZE, 0ul); |
| 351 |
if (wakepages[i] == NULL) { |
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printf("%s: can't alloc wake memory\n", __func__); |
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goto freepages; |
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} |
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} |
| 356 |
if (EVENTHANDLER_REGISTER(power_resume, acpi_stop_beep, NULL, |
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EVENTHANDLER_PRI_LAST) == NULL) { |
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printf("%s: can't register event handler\n", __func__); |
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goto freepages; |
| 360 |
} |
| 361 |
susppcbs = malloc(mp_ncpus * sizeof(*susppcbs), M_DEVBUF, M_WAITOK); |
| 362 |
for (i = 0; i < mp_ncpus; i++) { |
| 363 |
susppcbs[i] = malloc(sizeof(**susppcbs), M_DEVBUF, M_WAITOK); |
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susppcbs[i]->sp_fpususpend = alloc_fpusave(M_WAITOK); |
| 365 |
} |
| 366 |
|
| 367 |
return (wakepages); |
| 368 |
|
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freepages: |
| 370 |
for (i = 0; i < ACPI_WAKEPAGES; i++) |
| 371 |
if (wakepages[i] != NULL) |
| 372 |
contigfree(wakepages[i], PAGE_SIZE, M_DEVBUF); |
| 373 |
return (NULL); |
| 374 |
} |
| 375 |
|
| 376 |
void |
| 377 |
acpi_install_wakeup_handler(struct acpi_softc *sc) |
| 378 |
{ |
| 379 |
static void *wakeaddr; |
| 380 |
void *wakepages[ACPI_WAKEPAGES]; |
| 381 |
#ifdef __amd64__ |
| 382 |
uint64_t *pt4, *pt3, *pt2; |
| 383 |
vm_paddr_t pt4pa, pt3pa, pt2pa; |
| 384 |
int i; |
| 385 |
#endif |
| 386 |
|
| 387 |
if (wakeaddr != NULL) |
| 388 |
return; |
| 389 |
|
| 390 |
if (acpi_alloc_wakeup_handler(wakepages) == NULL) |
| 391 |
return; |
| 392 |
|
| 393 |
wakeaddr = wakepages[0]; |
| 394 |
sc->acpi_wakeaddr = (vm_offset_t)wakeaddr; |
| 395 |
sc->acpi_wakephys = vtophys(wakeaddr); |
| 396 |
|
| 397 |
#ifdef __amd64__ |
| 398 |
pt4 = wakepages[1]; |
| 399 |
pt3 = wakepages[2]; |
| 400 |
pt2 = wakepages[3]; |
| 401 |
pt4pa = vtophys(pt4); |
| 402 |
pt3pa = vtophys(pt3); |
| 403 |
pt2pa = vtophys(pt2); |
| 404 |
#endif |
| 405 |
|
| 406 |
bcopy(wakecode, (void *)sc->acpi_wakeaddr, sizeof(wakecode)); |
| 407 |
|
| 408 |
/* Patch GDT base address, ljmp targets. */ |
| 409 |
WAKECODE_FIXUP((bootgdtdesc + 2), uint32_t, |
| 410 |
sc->acpi_wakephys + bootgdt); |
| 411 |
WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t, |
| 412 |
sc->acpi_wakephys + wakeup_32); |
| 413 |
#ifdef __amd64__ |
| 414 |
WAKECODE_FIXUP((wakeup_sw64 + 1), uint32_t, |
| 415 |
sc->acpi_wakephys + wakeup_64); |
| 416 |
WAKECODE_FIXUP(wakeup_pagetables, uint32_t, pt4pa); |
| 417 |
#endif |
| 418 |
|
| 419 |
/* Save pointers to some global data. */ |
| 420 |
WAKECODE_FIXUP(wakeup_ret, void *, resumectx); |
| 421 |
#ifndef __amd64__ |
| 422 |
#if defined(PAE) || defined(PAE_TABLES) |
| 423 |
WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdpt)); |
| 424 |
#else |
| 425 |
WAKECODE_FIXUP(wakeup_cr3, register_t, vtophys(kernel_pmap->pm_pdir)); |
| 426 |
#endif |
| 427 |
|
| 428 |
#else /* __amd64__ */ |
| 429 |
/* Create the initial 1GB replicated page tables */ |
| 430 |
for (i = 0; i < 512; i++) { |
| 431 |
/* |
| 432 |
* Each slot of the level 4 pages points |
| 433 |
* to the same level 3 page |
| 434 |
*/ |
| 435 |
pt4[i] = (uint64_t)pt3pa; |
| 436 |
pt4[i] |= PG_V | PG_RW | PG_U; |
| 437 |
|
| 438 |
/* |
| 439 |
* Each slot of the level 3 pages points |
| 440 |
* to the same level 2 page |
| 441 |
*/ |
| 442 |
pt3[i] = (uint64_t)pt2pa; |
| 443 |
pt3[i] |= PG_V | PG_RW | PG_U; |
| 444 |
|
| 445 |
/* The level 2 page slots are mapped with 2MB pages for 1GB. */ |
| 446 |
pt2[i] = i * (2 * 1024 * 1024); |
| 447 |
pt2[i] |= PG_V | PG_RW | PG_PS | PG_U; |
| 448 |
} |
| 449 |
#endif /* !__amd64__ */ |
| 450 |
|
| 451 |
if (bootverbose) |
| 452 |
device_printf(sc->acpi_dev, "wakeup code va %#jx pa %#jx\n", |
| 453 |
(uintmax_t)sc->acpi_wakeaddr, (uintmax_t)sc->acpi_wakephys); |
| 454 |
} |
