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Masterwork From Distant Lands
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bwidawsk
Sep 12 2018, 6:43 PM
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Masterwork From Distant Lands
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diff --git a/sys/dev/acpica/Osd/OsdInterrupt.c b/sys/dev/acpica/Osd/OsdInterrupt.c
index 3fb1e70685d..8233eca812b 100644
--- a/sys/dev/acpica/Osd/OsdInterrupt.c
+++ b/sys/dev/acpica/Osd/OsdInterrupt.c
@@ -218,3 +218,9 @@ acpi_OverrideInterruptLevel(UINT32 InterruptNumber)
InterruptOverride = InterruptNumber;
return_ACPI_STATUS (AE_OK);
}
+
+UINT32
+acpi_GetSciInterrupt(void)
+{
+ return InterruptOverride ?: AcpiGbl_FADT.SciInterrupt;
+}
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
index 1be783c132f..09b956a0abe 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -57,6 +57,7 @@ __FBSDID("$FreeBSD$");
#endif
#include <machine/resource.h>
#include <machine/bus.h>
+#include <machine/intr_machdep.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <isa/pnpvar.h>
@@ -3050,20 +3051,12 @@ __do_sleep(struct acpi_softc *sc, int state)
static void
__do_s0ix(struct acpi_softc *sc)
{
- int *state;
+ intr_suspend();
+ intr_enable_src(acpi_GetSciInterrupt());
- critical_enter();
+ acpi_cpu_idle_mwait(0);
- state = (int *)PCPU_PTR(monitorbuf);
- atomic_store_int(state, 1);
-
- cpu_monitor(state, 0, 0);
- if (atomic_load_int(state) == 1)
- cpu_mwait(0, 0);
-
- atomic_store_int(state, 0);
-
- critical_exit();
+ intr_resume(false);
}
/*
@@ -3141,11 +3134,13 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
}
slp_state = ACPI_SS_DEV_SUSPEND;
- status = AcpiEnterSleepStatePrep(state);
- if (ACPI_FAILURE(status)) {
- device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
- AcpiFormatException(status));
- goto backout;
+ if (!prefer_s0ix(sc, state)) {
+ status = AcpiEnterSleepStatePrep(state);
+ if (ACPI_FAILURE(status)) {
+ device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
+ AcpiFormatException(status));
+ goto backout;
+ }
}
slp_state = ACPI_SS_SLP_PREP;
@@ -3196,7 +3191,7 @@ acpi_EnterSleepState(struct acpi_softc *sc, int state)
}
if (slp_state >= ACPI_SS_DEV_SUSPEND)
DEVICE_RESUME(root_bus);
- if (slp_state >= ACPI_SS_SLP_PREP)
+ if (!prefer_s0ix(sc, state)&& (slp_state >= ACPI_SS_SLP_PREP))
AcpiLeaveSleepState(state);
sc->acpi_next_sstate = 0;
diff --git a/sys/dev/acpica/acpivar.h b/sys/dev/acpica/acpivar.h
index faf6c75424b..1c39e4bd830 100644
--- a/sys/dev/acpica/acpivar.h
+++ b/sys/dev/acpica/acpivar.h
@@ -367,6 +367,7 @@ ACPI_STATUS acpi_EvaluateOSC(ACPI_HANDLE handle, uint8_t *uuid,
int revision, int count, uint32_t *caps_in,
uint32_t *caps_out, bool query);
ACPI_STATUS acpi_OverrideInterruptLevel(UINT32 InterruptNumber);
+UINT32 acpi_GetSciInterrupt(void);
ACPI_STATUS acpi_SetIntrModel(int model);
int acpi_ReqSleepState(struct acpi_softc *sc, int state);
int acpi_AckSleepState(struct apm_clone_data *clone, int error);
diff --git a/sys/x86/include/intr_machdep.h b/sys/x86/include/intr_machdep.h
index d9e7f881ffd..f4c5e3b19b5 100644
--- a/sys/x86/include/intr_machdep.h
+++ b/sys/x86/include/intr_machdep.h
@@ -162,6 +162,7 @@ int intr_register_source(struct intsrc *isrc);
int intr_remove_handler(void *cookie);
void intr_resume(bool suspend_cancelled);
void intr_suspend(void);
+void intr_enable_src(u_int irq);
void intr_reprogram(void);
void intrcnt_add(const char *name, u_long **countp);
void nexus_add_irq(u_long irq);
diff --git a/sys/x86/x86/intr_machdep.c b/sys/x86/x86/intr_machdep.c
index 9f93ec96f83..0a64156678f 100644
--- a/sys/x86/x86/intr_machdep.c
+++ b/sys/x86/x86/intr_machdep.c
@@ -396,6 +396,17 @@ intr_suspend(void)
mtx_unlock(&intrpic_lock);
}
+void
+intr_enable_src(u_int irq)
+{
+ struct intsrc *is;
+
+ sx_slock(&intrsrc_lock);
+ is = interrupt_sources[irq];
+ is->is_pic->pic_enable_source(is);
+ sx_sunlock(&intrsrc_lock);
+}
+
static int
intr_assign_cpu(void *arg, int cpu)
{

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