From: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
To: <qemu-devel@nongnu.org>, <qemu-arm@nongnu.org>,
<eric.auger@redhat.com>, <imammedo@redhat.com>
Cc: peter.maydell@linaro.org, lersek@redhat.com, linuxarm@huawei.com,
xuwei5@hisilicon.com, shannon.zhaosl@gmail.com
Subject: [PATCH 5/5] hw/arm/virt: Add nvdimm hotplug support
Date: Fri, 4 Oct 2019 16:53:02 +0100 [thread overview]
Message-ID: <20191004155302.4632-6-shameerali.kolothum.thodi@huawei.com> (raw)
In-Reply-To: <20191004155302.4632-1-shameerali.kolothum.thodi@huawei.com>
This adds support for nvdimm hotplug events through GED
and enables nvdimm for the arm/virt. Now Guests with DT boot
can have nvdimm cold plug and with ACPI both cold/hot plug.
Hot removal functionality is not yet supported.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
---
docs/specs/acpi_hw_reduced_hotplug.rst | 1 +
hw/acpi/generic_event_device.c | 13 +++++++++++++
hw/arm/virt.c | 20 +++++++++++++++-----
include/hw/acpi/generic_event_device.h | 1 +
4 files changed, 30 insertions(+), 5 deletions(-)
diff --git a/docs/specs/acpi_hw_reduced_hotplug.rst b/docs/specs/acpi_hw_reduced_hotplug.rst
index 911a98255b..e3abe975bf 100644
--- a/docs/specs/acpi_hw_reduced_hotplug.rst
+++ b/docs/specs/acpi_hw_reduced_hotplug.rst
@@ -63,6 +63,7 @@ GED IO interface (4 byte access)
bits:
0: Memory hotplug event
1: System power down event
+ 2: NVDIMM hotplug event
2-31: Reserved
**write_access:**
diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
index 9cee90cc70..ad1b684304 100644
--- a/hw/acpi/generic_event_device.c
+++ b/hw/acpi/generic_event_device.c
@@ -16,6 +16,7 @@
#include "hw/acpi/generic_event_device.h"
#include "hw/irq.h"
#include "hw/mem/pc-dimm.h"
+#include "hw/mem/nvdimm.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "qemu/error-report.h"
@@ -23,6 +24,7 @@
static const uint32_t ged_supported_events[] = {
ACPI_GED_MEM_HOTPLUG_EVT,
ACPI_GED_PWR_DOWN_EVT,
+ ACPI_GED_NVDIMM_HOTPLUG_EVT,
};
/*
@@ -110,6 +112,11 @@ void build_ged_aml(Aml *table, const char *name, HotplugHandler *hotplug_dev,
aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
aml_int(0x80)));
break;
+ case ACPI_GED_NVDIMM_HOTPLUG_EVT:
+ aml_append(if_ctx,
+ aml_notify(aml_name("\\_SB.NVDR"),
+ aml_int(0x80)));
+ break;
default:
/*
* Please make sure all the events in ged_supported_events[]
@@ -175,7 +182,11 @@ static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev,
AcpiGedState *s = ACPI_GED(hotplug_dev);
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
+ if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
+ nvdimm_acpi_plug_cb(hotplug_dev, dev);
+ } else {
acpi_memory_plug_cb(hotplug_dev, &s->memhp_state, dev, errp);
+ }
} else {
error_setg(errp, "virt: device plug request for unsupported device"
" type: %s", object_get_typename(OBJECT(dev)));
@@ -192,6 +203,8 @@ static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits ev)
sel = ACPI_GED_MEM_HOTPLUG_EVT;
} else if (ev & ACPI_POWER_DOWN_STATUS) {
sel = ACPI_GED_PWR_DOWN_EVT;
+ } else if (ev & ACPI_NVDIMM_HOTPLUG_STATUS) {
+ sel = ACPI_GED_NVDIMM_HOTPLUG_EVT;
} else {
/* Unknown event. Return without generating interrupt. */
warn_report("GED: Unsupported event %d. No irq injected", ev);
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 30bc8a7803..acdcba9638 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -543,6 +543,10 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms, qemu_irq *pic)
event |= ACPI_GED_MEM_HOTPLUG_EVT;
}
+ if (ms->nvdimms_state->is_enabled) {
+ event |= ACPI_GED_NVDIMM_HOTPLUG_EVT;
+ }
+
dev = qdev_create(NULL, TYPE_ACPI_GED);
qdev_prop_set_uint32(dev, "ged-event", event);
@@ -1938,9 +1942,12 @@ static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
}
if (!vms->acpi_dev) {
- error_setg(errp,
- "memory hotplug is not enabled: missing acpi-ged device");
- return;
+ /* Allow nvdimm DT or cold plug */
+ if (!(is_nvdimm && !dev->hotplugged)) {
+ error_setg(errp,
+ "memory hotplug is not enabled: missing acpi-ged device");
+ return;
+ }
}
pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp);
@@ -1964,8 +1971,10 @@ static void virt_memory_plug(HotplugHandler *hotplug_dev,
nvdimm_plug(ms->nvdimms_state);
}
- hhc = HOTPLUG_HANDLER_GET_CLASS(vms->acpi_dev);
- hhc->plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, &error_abort);
+ if (vms->acpi_dev) {
+ hhc = HOTPLUG_HANDLER_GET_CLASS(vms->acpi_dev);
+ hhc->plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, &error_abort);
+ }
out:
error_propagate(errp, local_err);
}
@@ -2073,6 +2082,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
hc->plug = virt_machine_device_plug_cb;
hc->unplug_request = virt_machine_device_unplug_request_cb;
mc->numa_mem_supported = true;
+ mc->nvdimm_supported = true;
mc->auto_enable_numa_with_memhp = true;
}
diff --git a/include/hw/acpi/generic_event_device.h b/include/hw/acpi/generic_event_device.h
index d157eac088..9eb86ca4fd 100644
--- a/include/hw/acpi/generic_event_device.h
+++ b/include/hw/acpi/generic_event_device.h
@@ -82,6 +82,7 @@
*/
#define ACPI_GED_MEM_HOTPLUG_EVT 0x1
#define ACPI_GED_PWR_DOWN_EVT 0x2
+#define ACPI_GED_NVDIMM_HOTPLUG_EVT 0x4
typedef struct GEDState {
MemoryRegion io;
--
2.17.1
next prev parent reply other threads:[~2019-10-04 16:12 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 15:52 [PATCH 0/5] ARM virt: Add NVDIMM support Shameer Kolothum
2019-10-04 15:52 ` [PATCH 1/5] hw/arm: Align ACPI blob len to PAGE size Shameer Kolothum
2019-11-08 16:17 ` Igor Mammedov
2019-11-11 12:47 ` Shameerali Kolothum Thodi
2019-12-09 13:04 ` Shameerali Kolothum Thodi
2019-10-04 15:52 ` [PATCH 2/5] nvdimm: Use configurable ACPI IO base and size Shameer Kolothum
2019-11-11 14:24 ` Igor Mammedov
2019-10-04 15:53 ` [PATCH 3/5] hw/arm/virt: Add nvdimm hot-plug infrastructure Shameer Kolothum
2019-11-11 14:38 ` Igor Mammedov
2019-10-04 15:53 ` [PATCH 4/5] hw/arm/boot: Expose the pmem nodes in the DT Shameer Kolothum
2019-11-11 14:46 ` Igor Mammedov
2019-10-04 15:53 ` Shameer Kolothum [this message]
2019-11-12 13:01 ` [PATCH 5/5] hw/arm/virt: Add nvdimm hotplug support Igor Mammedov
2019-10-18 16:39 ` [PATCH 0/5] ARM virt: Add NVDIMM support Auger Eric
2019-10-22 14:05 ` Shameerali Kolothum Thodi
2019-11-25 13:20 ` Shameerali Kolothum Thodi
2019-11-25 15:45 ` Igor Mammedov
2019-11-25 16:25 ` Shameerali Kolothum Thodi
2019-11-26 8:56 ` Igor Mammedov
2019-11-26 9:46 ` Andrew Jones
2019-11-28 12:36 ` Shameerali Kolothum Thodi
2019-12-09 17:39 ` Shameerali Kolothum Thodi
2019-12-11 7:57 ` Igor Mammedov
2019-12-13 12:52 ` Shameerali Kolothum Thodi
2020-01-06 17:06 ` Shameerali Kolothum Thodi
2020-01-09 17:13 ` Igor Mammedov
2020-01-13 13:11 ` Shameerali Kolothum Thodi
2019-11-12 14:39 ` Igor Mammedov
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