The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=2b6eec531a1b52621223316f7c2940ed1e293886
commit 2b6eec531a1b52621223316f7c2940ed1e293886 Author: Konstantin Belousov <[email protected]> AuthorDate: 2021-09-12 19:24:33 +0000 Commit: Konstantin Belousov <[email protected]> CommitDate: 2021-09-13 21:23:14 +0000 x86: duplicate acpi_wakeup.c per i386 and amd64 The file as is is the maze of #ifdef passages, all slightly different. Divorcing i386 and amd64 version actually makes changing the code easier, also no changes for i386 are planned. Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D31931 --- sys/{x86 => amd64}/acpica/acpi_wakeup.c | 87 +------ sys/conf/files.amd64 | 1 + sys/conf/files.i386 | 1 + sys/conf/files.x86 | 1 - sys/i386/acpica/acpi_wakeup.c | 391 ++++++++++++++++++++++++++++++++ 5 files changed, 394 insertions(+), 87 deletions(-) diff --git a/sys/x86/acpica/acpi_wakeup.c b/sys/amd64/acpica/acpi_wakeup.c similarity index 86% rename from sys/x86/acpica/acpi_wakeup.c rename to sys/amd64/acpica/acpi_wakeup.c index 68e0892a31e6..fba9532e9a64 100644 --- a/sys/x86/acpica/acpi_wakeup.c +++ b/sys/amd64/acpica/acpi_wakeup.c @@ -32,12 +32,6 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); -#if defined(__amd64__) -#define DEV_APIC -#else -#include "opt_apic.h" -#endif - #include <sys/param.h> #include <sys/bus.h> #include <sys/eventhandler.h> @@ -60,10 +54,8 @@ __FBSDID("$FreeBSD$"); #include <machine/specialreg.h> #include <x86/ucode.h> -#ifdef DEV_APIC #include <x86/apicreg.h> #include <x86/apicvar.h> -#endif #ifdef SMP #include <machine/smp.h> #include <machine/vmparam.h> @@ -98,11 +90,7 @@ static int acpi_wakeup_ap(struct acpi_softc *, int); static void acpi_wakeup_cpus(struct acpi_softc *); #endif -#ifdef __amd64__ #define ACPI_WAKEPAGES 8 -#else -#define ACPI_WAKEPAGES 1 -#endif #define WAKECODE_FIXUP(offset, type, val) do { \ type *addr; \ @@ -144,13 +132,8 @@ acpi_wakeup_ap(struct acpi_softc *sc, int cpu) } #define WARMBOOT_TARGET 0 -#ifdef __amd64__ #define WARMBOOT_OFF (KERNBASE + 0x0467) #define WARMBOOT_SEG (KERNBASE + 0x0469) -#else /* __i386__ */ -#define WARMBOOT_OFF (PMAP_MAP_LOW + 0x0467) -#define WARMBOOT_SEG (PMAP_MAP_LOW + 0x0469) -#endif #define CMOS_REG (0x70) #define CMOS_DATA (0x71) @@ -164,9 +147,7 @@ acpi_wakeup_cpus(struct acpi_softc *sc) int cpu; u_char mpbiosreason; -#ifdef __amd64__ if (!efi_boot) { -#endif /* save the current value of the warm-start vector */ mpbioswarmvec = *((uint32_t *)WARMBOOT_OFF); outb(CMOS_REG, BIOS_RESET); @@ -177,9 +158,7 @@ acpi_wakeup_cpus(struct acpi_softc *sc) *((volatile u_short *)WARMBOOT_SEG) = sc->acpi_wakephys >> 4; outb(CMOS_REG, BIOS_RESET); outb(CMOS_DATA, BIOS_WARM); /* 'warm-start' */ -#ifdef __amd64__ } -#endif /* Wake up each AP. */ for (cpu = 1; cpu < mp_ncpus; cpu++) { @@ -193,27 +172,13 @@ acpi_wakeup_cpus(struct acpi_softc *sc) } } -#ifdef __i386__ - /* - * Remove the identity mapping of low memory for all CPUs and sync - * the TLB for the BSP. The APs are now spinning in - * cpususpend_handler() and we will release them soon. Then each - * will invalidate its TLB. - */ - pmap_remap_lowptdi(false); -#endif - -#ifdef __amd64__ if (!efi_boot) { -#endif /* restore the warmstart vector */ *(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; outb(CMOS_REG, BIOS_RESET); outb(CMOS_DATA, mpbiosreason); -#ifdef __amd64__ } -#endif } #endif @@ -222,10 +187,8 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state) { ACPI_STATUS status; struct pcb *pcb; -#ifdef __amd64__ struct pcpu *pc; int i; -#endif if (sc->acpi_wakeaddr == 0ul) return (-1); /* couldn't alloc wake memory */ @@ -244,18 +207,13 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state) pcb = &susppcbs[0]->sp_pcb; if (savectx(pcb)) { -#ifdef __amd64__ fpususpend(susppcbs[0]->sp_fpususpend); -#else - npxsuspend(susppcbs[0]->sp_fpususpend); -#endif #ifdef SMP if (!CPU_EMPTY(&suspcpus) && suspend_cpus(suspcpus) == 0) { device_printf(sc->acpi_dev, "Failed to suspend APs\n"); return (0); /* couldn't sleep */ } #endif -#ifdef __amd64__ hw_ibrs_ibpb_active = 0; hw_ssb_active = 0; cpu_stdext_feature3 = 0; @@ -263,36 +221,16 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state) pc = pcpu_find(i); pc->pc_ibpb_set = 0; } -#endif WAKECODE_FIXUP(resume_beep, uint8_t, (acpi_resume_beep != 0)); WAKECODE_FIXUP(reset_video, uint8_t, (acpi_reset_video != 0)); -#ifdef __amd64__ WAKECODE_FIXUP(wakeup_efer, uint64_t, rdmsr(MSR_EFER) & ~(EFER_LMA)); -#else - if ((amd_feature & AMDID_NX) != 0) - WAKECODE_FIXUP(wakeup_efer, uint64_t, rdmsr(MSR_EFER)); - WAKECODE_FIXUP(wakeup_cr4, register_t, pcb->pcb_cr4); -#endif WAKECODE_FIXUP(wakeup_pcb, struct pcb *, pcb); WAKECODE_FIXUP(wakeup_gdt, uint16_t, pcb->pcb_gdt.rd_limit); WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, pcb->pcb_gdt.rd_base); -#ifdef __i386__ - /* - * Map some low memory with virt == phys for ACPI wakecode - * to use to jump to high memory after enabling paging. This - * is the same as for similar jump in locore, except the - * jump is a single instruction, and we know its address - * more precisely so only need a single PTD, and we have to - * be careful to use the kernel map (PTD[0] is for curthread - * which may be a user thread in deprecated APIs). - */ - pmap_remap_lowptdi(true); -#endif - /* Call ACPICA to enter the desired sleep state */ if (state == ACPI_STATE_S4 && sc->acpi_s4bios) status = AcpiEnterSleepStateS4bios(); @@ -317,11 +255,7 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state) * this point. */ cnresume(); -#ifdef __amd64__ fpuresume(susppcbs[0]->sp_fpususpend); -#else - npxresume(susppcbs[0]->sp_fpususpend); -#endif } return (1); /* wakeup successfully */ @@ -343,9 +277,7 @@ acpi_wakeup_machdep(struct acpi_softc *sc, int state, int sleep_result, initializecpu(); PCPU_SET(switchtime, 0); PCPU_SET(switchticks, ticks); -#ifdef DEV_APIC lapic_xapic_mode(); -#endif #ifdef SMP if (!CPU_EMPTY(&suspcpus)) acpi_wakeup_cpus(sc); @@ -357,10 +289,8 @@ acpi_wakeup_machdep(struct acpi_softc *sc, int state, int sleep_result, resume_cpus(suspcpus); #endif mca_resume(); -#ifdef __amd64__ if (vmm_resume_p != NULL) vmm_resume_p(); -#endif intr_resume(/*suspend_cancelled*/false); AcpiSetFirmwareWakingVector(0, 0); @@ -390,11 +320,7 @@ acpi_alloc_wakeup_handler(void *wakepages[ACPI_WAKEPAGES]) */ for (i = 0; i < ACPI_WAKEPAGES; i++) { wakepages[i] = contigmalloc(PAGE_SIZE, M_DEVBUF, - M_NOWAIT -#ifdef __i386__ - | M_EXEC -#endif - , 0x500, 0xa0000, PAGE_SIZE, 0ul); + M_NOWAIT, 0x500, 0xa0000, PAGE_SIZE, 0ul); if (wakepages[i] == NULL) { printf("%s: can't alloc wake memory\n", __func__); goto freepages; @@ -425,11 +351,9 @@ acpi_install_wakeup_handler(struct acpi_softc *sc) { static void *wakeaddr; void *wakepages[ACPI_WAKEPAGES]; -#ifdef __amd64__ uint64_t *pt5, *pt4, *pt3, *pt2_0, *pt2_1, *pt2_2, *pt2_3; vm_paddr_t pt5pa, pt4pa, pt3pa, pt2_0pa, pt2_1pa, pt2_2pa, pt2_3pa; int i; -#endif if (wakeaddr != NULL) return; @@ -441,7 +365,6 @@ acpi_install_wakeup_handler(struct acpi_softc *sc) sc->acpi_wakeaddr = (vm_offset_t)wakeaddr; sc->acpi_wakephys = vtophys(wakeaddr); -#ifdef __amd64__ if (la57) { pt5 = wakepages[7]; pt5pa = vtophys(pt5); @@ -458,7 +381,6 @@ acpi_install_wakeup_handler(struct acpi_softc *sc) pt2_1pa = vtophys(pt2_1); pt2_2pa = vtophys(pt2_2); pt2_3pa = vtophys(pt2_3); -#endif bcopy(wakecode, (void *)sc->acpi_wakeaddr, sizeof(wakecode)); @@ -467,18 +389,13 @@ acpi_install_wakeup_handler(struct acpi_softc *sc) sc->acpi_wakephys + bootgdt); WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t, sc->acpi_wakephys + wakeup_32); -#ifdef __amd64__ WAKECODE_FIXUP((wakeup_sw64 + 1), uint32_t, sc->acpi_wakephys + wakeup_64); WAKECODE_FIXUP(wakeup_pagetables, uint32_t, la57 ? (pt5pa | 0x1) : pt4pa); -#endif /* Save pointers to some global data. */ WAKECODE_FIXUP(wakeup_ret, void *, resumectx); -#ifndef __amd64__ - WAKECODE_FIXUP(wakeup_cr3, register_t, pmap_get_kcr3()); -#else /* __amd64__ */ /* Create 1:1 mapping for the low 4G */ if (la57) { bcopy(kernel_pmap->pm_pmltop, pt5, PAGE_SIZE); @@ -517,8 +434,6 @@ acpi_install_wakeup_handler(struct acpi_softc *sc) pt2_3[i] |= PG_V | PG_RW | PG_PS | PG_U; } -#endif /* !__amd64__ */ - if (bootverbose) device_printf(sc->acpi_dev, "wakeup code va %#jx pa %#jx\n", (uintmax_t)sc->acpi_wakeaddr, (uintmax_t)sc->acpi_wakephys); diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64 index 564e40564677..b50034f38d96 100644 --- a/sys/conf/files.amd64 +++ b/sys/conf/files.amd64 @@ -49,6 +49,7 @@ ia32_assym.h standard \ clean "ia32_assym.h" # amd64/acpica/acpi_machdep.c optional acpi +amd64/acpica/acpi_wakeup.c optional acpi acpi_wakecode.o optional acpi \ dependency "$S/amd64/acpica/acpi_wakecode.S assym.inc" \ compile-with "${NORMAL_S}" \ diff --git a/sys/conf/files.i386 b/sys/conf/files.i386 index f8320e710e98..af53a1ad7a8a 100644 --- a/sys/conf/files.i386 +++ b/sys/conf/files.i386 @@ -83,6 +83,7 @@ dev/vmd/vmd.c optional vmd dev/acpi_support/acpi_wmi_if.m standard dev/wbwd/wbwd.c optional wbwd i386/acpica/acpi_machdep.c optional acpi +i386/acpica/acpi_wakeup.c optional acpi acpi_wakecode.o optional acpi \ dependency "$S/i386/acpica/acpi_wakecode.S assym.inc" \ compile-with "${NORMAL_S}" \ diff --git a/sys/conf/files.x86 b/sys/conf/files.x86 index 925a3c5fe889..19c7dabd6001 100644 --- a/sys/conf/files.x86 +++ b/sys/conf/files.x86 @@ -285,7 +285,6 @@ libkern/x86/crc32_sse42.c standard # x86/acpica/OsdEnvironment.c optional acpi x86/acpica/acpi_apm.c optional acpi -x86/acpica/acpi_wakeup.c optional acpi x86/acpica/srat.c optional acpi x86/bios/vpd.c optional vpd x86/cpufreq/est.c optional cpufreq diff --git a/sys/i386/acpica/acpi_wakeup.c b/sys/i386/acpica/acpi_wakeup.c new file mode 100644 index 000000000000..682e9613962f --- /dev/null +++ b/sys/i386/acpica/acpi_wakeup.c @@ -0,0 +1,391 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2001 Takanori Watanabe <[email protected]> + * Copyright (c) 2001-2012 Mitsuru IWASAKI <[email protected]> + * Copyright (c) 2003 Peter Wemm + * Copyright (c) 2008-2012 Jung-uk Kim <[email protected]> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_apic.h" + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/eventhandler.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/memrange.h> +#include <sys/smp.h> +#include <sys/systm.h> +#include <sys/cons.h> + +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <machine/clock.h> +#include <machine/cpu.h> +#include <machine/intr_machdep.h> +#include <machine/md_var.h> +#include <x86/mca.h> +#include <machine/pcb.h> +#include <machine/specialreg.h> +#include <x86/ucode.h> + +#ifdef DEV_APIC +#include <x86/apicreg.h> +#include <x86/apicvar.h> +#endif +#ifdef SMP +#include <machine/smp.h> +#include <machine/vmparam.h> +#endif + +#include <contrib/dev/acpica/include/acpi.h> + +#include <dev/acpica/acpivar.h> + +#include "acpi_wakecode.h" +#include "acpi_wakedata.h" + +/* Make sure the code is less than a page and leave room for the stack. */ +CTASSERT(sizeof(wakecode) < PAGE_SIZE - 1024); + +extern int acpi_resume_beep; +extern int acpi_reset_video; +extern int acpi_susp_bounce; + +#ifdef SMP +extern struct susppcb **susppcbs; +static cpuset_t suspcpus; +#else +static struct susppcb **susppcbs; +#endif + +static void *acpi_alloc_wakeup_handler(void **); +static void acpi_stop_beep(void *); + +#ifdef SMP +static int acpi_wakeup_ap(struct acpi_softc *, int); +static void acpi_wakeup_cpus(struct acpi_softc *); +#endif + +#define ACPI_WAKEPAGES 1 + +#define WAKECODE_FIXUP(offset, type, val) do { \ + type *addr; \ + addr = (type *)(sc->acpi_wakeaddr + (offset)); \ + *addr = val; \ +} while (0) + +static void +acpi_stop_beep(void *arg) +{ + + if (acpi_resume_beep != 0) + timer_spkr_release(); +} + +#ifdef SMP +static int +acpi_wakeup_ap(struct acpi_softc *sc, int cpu) +{ + struct pcb *pcb; + int vector = (sc->acpi_wakephys >> 12) & 0xff; + int apic_id = cpu_apic_ids[cpu]; + int ms; + + pcb = &susppcbs[cpu]->sp_pcb; + WAKECODE_FIXUP(wakeup_pcb, struct pcb *, pcb); + WAKECODE_FIXUP(wakeup_gdt, uint16_t, pcb->pcb_gdt.rd_limit); + WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, pcb->pcb_gdt.rd_base); + + ipi_startup(apic_id, vector); + + /* Wait up to 5 seconds for it to resume. */ + for (ms = 0; ms < 5000; ms++) { + if (!CPU_ISSET(cpu, &suspended_cpus)) + return (1); /* return SUCCESS */ + DELAY(1000); + } + return (0); /* return FAILURE */ +} + +#define WARMBOOT_TARGET 0 +#define WARMBOOT_OFF (PMAP_MAP_LOW + 0x0467) +#define WARMBOOT_SEG (PMAP_MAP_LOW + 0x0469) + +#define CMOS_REG (0x70) +#define CMOS_DATA (0x71) +#define BIOS_RESET (0x0f) +#define BIOS_WARM (0x0a) + +static void +acpi_wakeup_cpus(struct acpi_softc *sc) +{ + uint32_t mpbioswarmvec; + int cpu; + u_char mpbiosreason; + + /* save the current value of the warm-start vector */ + mpbioswarmvec = *((uint32_t *)WARMBOOT_OFF); + outb(CMOS_REG, BIOS_RESET); + mpbiosreason = inb(CMOS_DATA); + + /* setup a vector to our boot code */ + *((volatile u_short *)WARMBOOT_OFF) = WARMBOOT_TARGET; + *((volatile u_short *)WARMBOOT_SEG) = sc->acpi_wakephys >> 4; + outb(CMOS_REG, BIOS_RESET); + outb(CMOS_DATA, BIOS_WARM); /* 'warm-start' */ + + /* Wake up each AP. */ + for (cpu = 1; cpu < mp_ncpus; cpu++) { + if (!CPU_ISSET(cpu, &suspcpus)) + continue; + if (acpi_wakeup_ap(sc, cpu) == 0) { + /* restore the warmstart vector */ + *(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; + panic("acpi_wakeup: failed to resume AP #%d (PHY #%d)", + cpu, cpu_apic_ids[cpu]); + } + } + + /* + * Remove the identity mapping of low memory for all CPUs and sync + * the TLB for the BSP. The APs are now spinning in + * cpususpend_handler() and we will release them soon. Then each + * will invalidate its TLB. + */ + pmap_remap_lowptdi(false); + + /* restore the warmstart vector */ + *(uint32_t *)WARMBOOT_OFF = mpbioswarmvec; + + outb(CMOS_REG, BIOS_RESET); + outb(CMOS_DATA, mpbiosreason); +} +#endif + +int +acpi_sleep_machdep(struct acpi_softc *sc, int state) +{ + ACPI_STATUS status; + struct pcb *pcb; + + if (sc->acpi_wakeaddr == 0ul) + return (-1); /* couldn't alloc wake memory */ + +#ifdef SMP + suspcpus = all_cpus; + CPU_CLR(PCPU_GET(cpuid), &suspcpus); +#endif + + if (acpi_resume_beep != 0) + timer_spkr_acquire(); + + AcpiSetFirmwareWakingVector(sc->acpi_wakephys, 0); + + intr_suspend(); + + pcb = &susppcbs[0]->sp_pcb; + if (savectx(pcb)) { + npxsuspend(susppcbs[0]->sp_fpususpend); +#ifdef SMP + if (!CPU_EMPTY(&suspcpus) && suspend_cpus(suspcpus) == 0) { + device_printf(sc->acpi_dev, "Failed to suspend APs\n"); + return (0); /* couldn't sleep */ + } +#endif + + WAKECODE_FIXUP(resume_beep, uint8_t, (acpi_resume_beep != 0)); + WAKECODE_FIXUP(reset_video, uint8_t, (acpi_reset_video != 0)); + + if ((amd_feature & AMDID_NX) != 0) + WAKECODE_FIXUP(wakeup_efer, uint64_t, rdmsr(MSR_EFER)); + WAKECODE_FIXUP(wakeup_cr4, register_t, pcb->pcb_cr4); + WAKECODE_FIXUP(wakeup_pcb, struct pcb *, pcb); + WAKECODE_FIXUP(wakeup_gdt, uint16_t, pcb->pcb_gdt.rd_limit); + WAKECODE_FIXUP(wakeup_gdt + 2, uint64_t, pcb->pcb_gdt.rd_base); + + /* + * Map some low memory with virt == phys for ACPI wakecode + * to use to jump to high memory after enabling paging. This + * is the same as for similar jump in locore, except the + * jump is a single instruction, and we know its address + * more precisely so only need a single PTD, and we have to + * be careful to use the kernel map (PTD[0] is for curthread + * which may be a user thread in deprecated APIs). + */ + pmap_remap_lowptdi(true); + + /* Call ACPICA to enter the desired sleep state */ + if (state == ACPI_STATE_S4 && sc->acpi_s4bios) + status = AcpiEnterSleepStateS4bios(); + else + status = AcpiEnterSleepState(state); + if (ACPI_FAILURE(status)) { + device_printf(sc->acpi_dev, + "AcpiEnterSleepState failed - %s\n", + AcpiFormatException(status)); + return (0); /* couldn't sleep */ + } + + if (acpi_susp_bounce) + resumectx(pcb); + + for (;;) + ia32_pause(); + } else { + /* + * Re-initialize console hardware as soon as possibe. + * No console output (e.g. printf) is allowed before + * this point. + */ + cnresume(); + npxresume(susppcbs[0]->sp_fpususpend); + } + + return (1); /* wakeup successfully */ +} + +int +acpi_wakeup_machdep(struct acpi_softc *sc, int state, int sleep_result, + int intr_enabled) +{ + + if (sleep_result == -1) + return (sleep_result); + + if (!intr_enabled) { + /* Wakeup MD procedures in interrupt disabled context */ + if (sleep_result == 1) { + ucode_reload(); + pmap_init_pat(); + initializecpu(); + PCPU_SET(switchtime, 0); + PCPU_SET(switchticks, ticks); +#ifdef DEV_APIC + lapic_xapic_mode(); +#endif +#ifdef SMP + if (!CPU_EMPTY(&suspcpus)) + acpi_wakeup_cpus(sc); +#endif + } + +#ifdef SMP + if (!CPU_EMPTY(&suspcpus)) + resume_cpus(suspcpus); +#endif + mca_resume(); + intr_resume(/*suspend_cancelled*/false); + + AcpiSetFirmwareWakingVector(0, 0); + } else { + /* Wakeup MD procedures in interrupt enabled context */ + if (sleep_result == 1 && mem_range_softc.mr_op != NULL && + mem_range_softc.mr_op->reinit != NULL) + mem_range_softc.mr_op->reinit(&mem_range_softc); + } + + return (sleep_result); +} + +static void * +acpi_alloc_wakeup_handler(void *wakepages[ACPI_WAKEPAGES]) +{ + int i; + + memset(wakepages, 0, ACPI_WAKEPAGES * sizeof(*wakepages)); + + /* + * Specify the region for our wakeup code. We want it in the low 1 MB + * region, excluding real mode IVT (0-0x3ff), BDA (0x400-0x4ff), EBDA + * (less than 128KB, below 0xa0000, must be excluded by SMAP and DSDT), + * and ROM area (0xa0000 and above). The temporary page tables must be + * page-aligned. + */ + for (i = 0; i < ACPI_WAKEPAGES; i++) { + wakepages[i] = contigmalloc(PAGE_SIZE, M_DEVBUF, + M_NOWAIT | M_EXEC, 0x500, 0xa0000, PAGE_SIZE, 0ul); + if (wakepages[i] == NULL) { + printf("%s: can't alloc wake memory\n", __func__); + goto freepages; + } + } + if (EVENTHANDLER_REGISTER(power_resume, acpi_stop_beep, NULL, + EVENTHANDLER_PRI_LAST) == NULL) { + printf("%s: can't register event handler\n", __func__); + goto freepages; + } + susppcbs = malloc(mp_ncpus * sizeof(*susppcbs), M_DEVBUF, M_WAITOK); + for (i = 0; i < mp_ncpus; i++) { + susppcbs[i] = malloc(sizeof(**susppcbs), M_DEVBUF, M_WAITOK); + susppcbs[i]->sp_fpususpend = alloc_fpusave(M_WAITOK); + } + + return (wakepages); + +freepages: + for (i = 0; i < ACPI_WAKEPAGES; i++) + if (wakepages[i] != NULL) + contigfree(wakepages[i], PAGE_SIZE, M_DEVBUF); + return (NULL); +} + +void +acpi_install_wakeup_handler(struct acpi_softc *sc) +{ + static void *wakeaddr; + void *wakepages[ACPI_WAKEPAGES]; + + if (wakeaddr != NULL) + return; + + if (acpi_alloc_wakeup_handler(wakepages) == NULL) + return; + + wakeaddr = wakepages[0]; + sc->acpi_wakeaddr = (vm_offset_t)wakeaddr; + sc->acpi_wakephys = vtophys(wakeaddr); + + bcopy(wakecode, (void *)sc->acpi_wakeaddr, sizeof(wakecode)); + + /* Patch GDT base address, ljmp targets. */ + WAKECODE_FIXUP((bootgdtdesc + 2), uint32_t, + sc->acpi_wakephys + bootgdt); + WAKECODE_FIXUP((wakeup_sw32 + 2), uint32_t, + sc->acpi_wakephys + wakeup_32); + + /* Save pointers to some global data. */ + WAKECODE_FIXUP(wakeup_ret, void *, resumectx); + WAKECODE_FIXUP(wakeup_cr3, register_t, pmap_get_kcr3()); + + if (bootverbose) + device_printf(sc->acpi_dev, "wakeup code va %#jx pa %#jx\n", + (uintmax_t)sc->acpi_wakeaddr, (uintmax_t)sc->acpi_wakephys); +} _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
