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[Qemu-devel] [PATCH-for-4.2 v10 05/11] hw/arm/virt: Enable device memory
From: |
Shameer Kolothum |
Subject: |
[Qemu-devel] [PATCH-for-4.2 v10 05/11] hw/arm/virt: Enable device memory cold/hot plug with ACPI boot |
Date: |
Wed, 4 Sep 2019 09:56:23 +0100 |
This initializes the GED device with base memory and irq, configures
ged memory hotplug event and builds the corresponding aml code. With
this, both hot and cold plug of device memory is enabled now for Guest
with ACPI boot. Memory cold plug support with Guest DT boot is not yet
supported.
As DSDT table gets changed by this, update bios-tables-test-allowed-diff.h
to avoid "make check" failure.
Signed-off-by: Shameer Kolothum <address@hidden>
---
v9 --> v10
-updated commit log with bios-tables-test-allowed-diff.h info.
-Removed object_property_add_child() from create_acpi_ged().
v8 --> v9
-Changes related to GED being a TYPE_SYS_BUS_DEVICE now.
-Error propagation to _plug() handler.
-Removed R-by by Eric for now.
v7 --> v8
-Changed no_acpi_dev to no_ged.
-Fixed 'dev' reference leak by object_new().
-Updated bios-tables-test-allowed-diff.h to avoid "make check"
failure.
---
hw/arm/Kconfig | 2 +
hw/arm/virt-acpi-build.c | 16 +++++++
hw/arm/virt.c | 60 +++++++++++++++++++++++----
include/hw/arm/virt.h | 4 ++
tests/bios-tables-test-allowed-diff.h | 1 +
5 files changed, 76 insertions(+), 7 deletions(-)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 39d285ad3d..c6e7782580 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -22,6 +22,8 @@ config ARM_VIRT
select ACPI_PCI
select MEM_DEVICE
select DIMM
+ select ACPI_MEMORY_HOTPLUG
+ select ACPI_HW_REDUCED
config CHEETAH
bool
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index a8b2d97fe9..5063f28812 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -39,6 +39,8 @@
#include "hw/acpi/aml-build.h"
#include "hw/acpi/utils.h"
#include "hw/acpi/pci.h"
+#include "hw/acpi/memory_hotplug.h"
+#include "hw/acpi/generic_event_device.h"
#include "hw/pci/pcie_host.h"
#include "hw/pci/pci.h"
#include "hw/arm/virt.h"
@@ -706,6 +708,7 @@ static void
build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
Aml *scope, *dsdt;
+ MachineState *ms = MACHINE(vms);
const MemMapEntry *memmap = vms->memmap;
const int *irqmap = vms->irqmap;
@@ -730,6 +733,19 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
VirtMachineState *vms)
vms->highmem, vms->highmem_ecam);
acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
(irqmap[VIRT_GPIO] + ARM_SPI_BASE));
+ if (vms->acpi_dev) {
+ build_ged_aml(scope, "\\_SB."GED_DEVICE,
+ HOTPLUG_HANDLER(vms->acpi_dev),
+ irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY,
+ memmap[VIRT_ACPI_GED].base);
+ }
+
+ if (vms->acpi_dev && ms->ram_slots) {
+ build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL,
+ AML_SYSTEM_MEMORY,
+ memmap[VIRT_PCDIMM_ACPI].base);
+ }
+
acpi_dsdt_add_power_button(scope);
aml_append(dsdt, scope);
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 7c492c31a0..b99c12ad9c 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -70,6 +70,7 @@
#include "target/arm/internals.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
+#include "hw/acpi/generic_event_device.h"
#define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@@ -140,6 +141,8 @@ static const MemMapEntry base_memmap[] = {
[VIRT_GPIO] = { 0x09030000, 0x00001000 },
[VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
[VIRT_SMMU] = { 0x09050000, 0x00020000 },
+ [VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN },
+ [VIRT_ACPI_GED] = { 0x09080000, ACPI_GED_EVT_SEL_LEN },
[VIRT_MMIO] = { 0x0a000000, 0x00000200 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
[VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
@@ -175,6 +178,7 @@ static const int a15irqmap[] = {
[VIRT_PCIE] = 3, /* ... to 6 */
[VIRT_GPIO] = 7,
[VIRT_SECURE_UART] = 8,
+ [VIRT_ACPI_GED] = 9,
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
[VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
[VIRT_SMMU] = 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */
@@ -524,6 +528,24 @@ static void fdt_add_pmu_nodes(const VirtMachineState *vms)
}
}
+static inline DeviceState *create_acpi_ged(VirtMachineState *vms, qemu_irq
*pic)
+{
+ DeviceState *dev;
+ int irq = vms->irqmap[VIRT_ACPI_GED];
+ uint32_t event = ACPI_GED_MEM_HOTPLUG_EVT;
+
+ dev = qdev_create(NULL, TYPE_ACPI_GED);
+ qdev_prop_set_uint32(dev, "ged-event", event);
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vms->memmap[VIRT_ACPI_GED].base);
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1,
vms->memmap[VIRT_PCDIMM_ACPI].base);
+
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, pic[irq]);
+
+ return dev;
+}
+
static void create_its(VirtMachineState *vms, DeviceState *gicdev)
{
const char *itsclass = its_class_name();
@@ -1487,6 +1509,7 @@ static void machvirt_init(MachineState *machine)
MemoryRegion *ram = g_new(MemoryRegion, 1);
bool firmware_loaded;
bool aarch64 = true;
+ bool has_ged = !vmc->no_ged;
unsigned int smp_cpus = machine->smp.cpus;
unsigned int max_cpus = machine->smp.max_cpus;
@@ -1701,6 +1724,10 @@ static void machvirt_init(MachineState *machine)
create_gpio(vms, pic);
+ if (has_ged && aarch64 && firmware_loaded && acpi_enabled) {
+ vms->acpi_dev = create_acpi_ged(vms, pic);
+ }
+
/* Create mmio transports, so the user can create virtio backends
* (which will be automatically plugged in to the transports). If
* no backend is created the transport will just sit harmlessly idle.
@@ -1880,14 +1907,23 @@ static const CPUArchIdList
*virt_possible_cpu_arch_ids(MachineState *ms)
static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
+ VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
+ const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
+ Error *local_err = NULL;
- /*
- * The device memory is not yet exposed to the Guest either through
- * DT or ACPI and hence both cold/hot plug of memory is explicitly
- * disabled for now.
- */
- if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
- error_setg(errp, "memory cold/hot plug is not yet supported");
+ if (is_nvdimm) {
+ error_setg(errp, "nvdimm is not yet supported");
+ return;
+ }
+
+ if (!vms->acpi_dev) {
+ error_setg(errp, "memory hotplug is not enabled: missing acpi device");
+ return;
+ }
+
+ hotplug_handler_pre_plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
return;
}
@@ -1897,11 +1933,18 @@ static void virt_memory_pre_plug(HotplugHandler
*hotplug_dev, DeviceState *dev,
static void virt_memory_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
+ HotplugHandlerClass *hhc;
VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
Error *local_err = NULL;
pc_dimm_plug(PC_DIMM(dev), MACHINE(vms), &local_err);
+ if (local_err) {
+ goto out;
+ }
+ hhc = HOTPLUG_HANDLER_GET_CLASS(vms->acpi_dev);
+ hhc->plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, &local_err);
+out:
error_propagate(errp, local_err);
}
@@ -2108,8 +2151,11 @@ DEFINE_VIRT_MACHINE_AS_LATEST(4, 2)
static void virt_machine_4_1_options(MachineClass *mc)
{
+ VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc));
+
virt_machine_4_2_options(mc);
compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len);
+ vmc->no_ged = true;
}
DEFINE_VIRT_MACHINE(4, 1)
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index a72094204e..577ee49b4b 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -77,6 +77,8 @@ enum {
VIRT_GPIO,
VIRT_SECURE_UART,
VIRT_SECURE_MEM,
+ VIRT_PCDIMM_ACPI,
+ VIRT_ACPI_GED,
VIRT_LOWMEMMAP_LAST,
};
@@ -106,6 +108,7 @@ typedef struct {
bool claim_edge_triggered_timers;
bool smbios_old_sys_ver;
bool no_highmem_ecam;
+ bool no_ged; /* Machines < 4.2 has no support for ACPI GED device */
} VirtMachineClass;
typedef struct {
@@ -133,6 +136,7 @@ typedef struct {
uint32_t iommu_phandle;
int psci_conduit;
hwaddr highest_gpa;
+ DeviceState *acpi_dev;
} VirtMachineState;
#define VIRT_ECAM_ID(high) (high ? VIRT_HIGH_PCIE_ECAM : VIRT_PCIE_ECAM)
diff --git a/tests/bios-tables-test-allowed-diff.h
b/tests/bios-tables-test-allowed-diff.h
index dfb8523c8b..7b4adbc822 100644
--- a/tests/bios-tables-test-allowed-diff.h
+++ b/tests/bios-tables-test-allowed-diff.h
@@ -1 +1,2 @@
/* List of comma-separated changed AML files to ignore */
+"tests/data/acpi/virt/DSDT",
--
2.17.1
- [Qemu-devel] [PATCH-for-4.2 v10 00/11] ARM virt: ACPI memory hotplug support, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 01/11] hw/acpi: Make ACPI IO address space configurable, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 02/11] hw/acpi: Do not create memory hotplug method when handler is not defined, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 03/11] hw/acpi: Add ACPI Generic Event Device Support, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 04/11] hw/arm/virt: Add memory hotplug framework, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 06/11] hw/arm/virt-acpi-build: Add PC-DIMM in SRAT, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 05/11] hw/arm/virt: Enable device memory cold/hot plug with ACPI boot,
Shameer Kolothum <=
- [Qemu-devel] [PATCH-for-4.2 v10 07/11] hw/arm: Factor out powerdown notifier from GPIO, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 09/11] docs/specs: Add ACPI GED documentation, Shameer Kolothum, 2019/09/04
- [Qemu-devel] [PATCH-for-4.2 v10 08/11] hw/arm: Use GED for system_powerdown event, Shameer Kolothum, 2019/09/04