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x86: duplicate acpi_wakeup.c per i386 and amd64

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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
This commit is contained in:
Konstantin Belousov 2021-09-12 22:24:33 +03:00
parent abf774528d
commit 2b6eec531a
5 changed files with 394 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
sys/x86/acpica/acpi_wakeup.c → sys/amd64/acpica/acpi_wakeup.c
View File

@ -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);

1
sys/conf/files.amd64
View File

@ -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}" \

1
sys/conf/files.i386
View File

@ -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}" \

1
sys/conf/files.x86
View File

@ -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

391
sys/i386/acpica/acpi_wakeup.c Normal file
View File

@ -0,0 +1,391 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 Takanori Watanabe <takawata@jp.freebsd.org>
* Copyright (c) 2001-2012 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
* Copyright (c) 2003 Peter Wemm
* Copyright (c) 2008-2012 Jung-uk Kim <jkim@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);
}