git: de1aeb942830 - stable/13 - x86: duplicate acpi_wakeup.c per i386 and amd64
Konstantin Belousov
kib at FreeBSD.org
Mon Sep 20 00:48:24 UTC 2021
The branch stable/13 has been updated by kib:
URL: https://cgit.FreeBSD.org/src/commit/?id=de1aeb9428301529d58d03fdde9d32afc81533b8
commit de1aeb9428301529d58d03fdde9d32afc81533b8
Author: Konstantin Belousov <kib at FreeBSD.org>
AuthorDate: 2021-09-12 19:24:33 +0000
Commit: Konstantin Belousov <kib at FreeBSD.org>
CommitDate: 2021-09-20 00:47:21 +0000
x86: duplicate acpi_wakeup.c per i386 and amd64
(cherry picked from commit 2b6eec531a1b52621223316f7c2940ed1e293886)
---
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 b1593006e110..55456b2d1b90 100644
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -73,6 +73,7 @@ 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 926451976372..5c65ad53cea4 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -132,6 +132,7 @@ 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 7df289375cd3..fba4cb1eb863 100644
--- a/sys/conf/files.x86
+++ b/sys/conf/files.x86
@@ -301,7 +301,6 @@ 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/smbios.c optional smbios
x86/bios/vpd.c optional vpd
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 <takawata at jp.freebsd.org>
+ * Copyright (c) 2001-2012 Mitsuru IWASAKI <iwasaki at jp.freebsd.org>
+ * Copyright (c) 2003 Peter Wemm
+ * Copyright (c) 2008-2012 Jung-uk Kim <jkim at FreeBSD.org>
+ * 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);
+}
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