* [PATCH v4 RESEND 0/2] hw/riscv/virt: Add acpi ged and powerdown support
@ 2025-11-13 1:27 liu.xuemei1
2025-11-13 1:30 ` [PATCH v4 RESEND 1/2] " liu.xuemei1
2025-11-13 1:44 ` [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V liu.xuemei1
0 siblings, 2 replies; 6+ messages in thread
From: liu.xuemei1 @ 2025-11-13 1:27 UTC (permalink / raw)
To: imammedo, alistair.francis, dbarboza, sunilvl, anisinha
Cc: pbonzini, palmer, liwei1518, zhiwei_liu, mst, qemu-devel,
qemu-riscv, liu.xuemei1
From: Xuemei Liu <liu.xuemei1@zte.com.cn>
Add riscv acpi powerdown support
Changes in v4:
- Added modifies of DSDT blob in another patch
- Link to v3: https://lore.kernel.org/qemu-riscv/20250723113739751COZ5PkRzx6aXEuKzsHhm_@zte.com.cn/
Changes in v3:
- Added missing param to virt_is_acpi_enabled
- Fixed failure of bios-tables-test
- Link to v2: https://lore.kernel.org/qemu-riscv/202506201130099861lTkD839Hh6oko8Jo2W2H@zte.com.cn/
Changes in v2:
- Unwrappered acpi_dsdt_add_ged function
- Modified base address of VIRT_ACPI_GED
- Added conditions for function calls
- Adjusted code formatting
- Link to v1: https://lore.kernel.org/qemu-riscv/202506191556260735QxWC8sxRwFURYEvlD24y@zte.com.cn/
Xuemei Liu (2):
hw/riscv/virt: Add acpi ged and powerdown support
tests/acpi: Add acpi ged and power button in DSDT for RISC-V
hw/riscv/Kconfig | 1 +
hw/riscv/virt-acpi-build.c | 10 +++++++++
hw/riscv/virt.c | 35 ++++++++++++++++++++++++++++++
include/hw/riscv/virt.h | 4 ++++
tests/data/acpi/riscv64/virt/DSDT | Bin 3538 -> 3681 bytes
5 files changed, 50 insertions(+)
--
2.27.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v4 RESEND 1/2] hw/riscv/virt: Add acpi ged and powerdown support
2025-11-13 1:27 [PATCH v4 RESEND 0/2] hw/riscv/virt: Add acpi ged and powerdown support liu.xuemei1
@ 2025-11-13 1:30 ` liu.xuemei1
2025-11-17 10:01 ` Daniel Henrique Barboza
2025-12-10 13:54 ` Igor Mammedov
2025-11-13 1:44 ` [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V liu.xuemei1
1 sibling, 2 replies; 6+ messages in thread
From: liu.xuemei1 @ 2025-11-13 1:30 UTC (permalink / raw)
To: imammedo, alistair.francis, dbarboza, sunilvl, anisinha
Cc: pbonzini, palmer, liwei1518, zhiwei_liu, mst, qemu-devel,
qemu-riscv, liu.xuemei1
From: Xuemei Liu <liu.xuemei1@zte.com.cn>
This adds powerdown support by implementing the ACPI GED.
Co-authored-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
---
hw/riscv/Kconfig | 1 +
hw/riscv/virt-acpi-build.c | 10 ++++++
hw/riscv/virt.c | 35 +++++++++++++++++++++
include/hw/riscv/virt.h | 4 +++
tests/qtest/bios-tables-test-allowed-diff.h | 1 +
5 files changed, 51 insertions(+)
diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
index fc9c35bd98..f89a6e3672 100644
--- a/hw/riscv/Kconfig
+++ b/hw/riscv/Kconfig
@@ -68,6 +68,7 @@ config RISCV_VIRT
select PLATFORM_BUS
select ACPI
select ACPI_PCI
+ select ACPI_HW_REDUCED
config SHAKTI_C
bool
diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index f1406cb683..64fd8aa426 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -27,6 +27,7 @@
#include "hw/acpi/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
+#include "hw/acpi/generic_event_device.h"
#include "hw/acpi/pci.h"
#include "hw/acpi/utils.h"
#include "hw/intc/riscv_aclint.h"
@@ -498,6 +499,15 @@ static void build_dsdt(GArray *table_data,
acpi_dsdt_add_gpex_host(scope, PCIE_IRQ + VIRT_IRQCHIP_NUM_SOURCES * 2);
}
+ if (s->acpi_ged) {
+ build_ged_aml(scope, "\\_SB."GED_DEVICE,
+ HOTPLUG_HANDLER(s->acpi_ged),
+ ACPI_GED_IRQ, AML_SYSTEM_MEMORY,
+ s->memmap[VIRT_ACPI_GED].base);
+ }
+
+ acpi_dsdt_add_power_button(scope);
+
aml_append(dsdt, scope);
/* copy AML table into ACPI tables blob and patch header there */
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 17909206c7..a853184105 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -51,10 +51,12 @@
#include "system/kvm.h"
#include "system/tpm.h"
#include "system/qtest.h"
+#include "system/runstate.h"
#include "hw/pci/pci.h"
#include "hw/pci-host/gpex.h"
#include "hw/display/ramfb.h"
#include "hw/acpi/aml-build.h"
+#include "hw/acpi/generic_event_device.h"
#include "qapi/qapi-visit-common.h"
#include "hw/virtio/virtio-iommu.h"
#include "hw/uefi/var-service-api.h"
@@ -95,6 +97,7 @@ static const MemMapEntry virt_memmap[] = {
[VIRT_UART0] = { 0x10000000, 0x100 },
[VIRT_VIRTIO] = { 0x10001000, 0x1000 },
[VIRT_FW_CFG] = { 0x10100000, 0x18 },
+ [VIRT_ACPI_GED] = { 0x10101000, ACPI_GED_EVT_SEL_LEN },
[VIRT_FLASH] = { 0x20000000, 0x4000000 },
[VIRT_IMSIC_M] = { 0x24000000, VIRT_IMSIC_MAX_SIZE },
[VIRT_IMSIC_S] = { 0x28000000, VIRT_IMSIC_MAX_SIZE },
@@ -1270,6 +1273,22 @@ static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
return dev;
}
+static DeviceState *create_acpi_ged(RISCVVirtState *s, DeviceState *irqchip)
+{
+ DeviceState *dev;
+ uint32_t event = ACPI_GED_PWR_DOWN_EVT;
+
+ dev = qdev_new(TYPE_ACPI_GED);
+ qdev_prop_set_uint32(dev, "ged-event", event);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, s->memmap[VIRT_ACPI_GED].base);
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
+ qdev_get_gpio_in(irqchip, ACPI_GED_IRQ));
+
+ return dev;
+}
+
static FWCfgState *create_fw_cfg(const MachineState *ms, hwaddr base)
{
FWCfgState *fw_cfg;
@@ -1428,6 +1447,14 @@ static void virt_build_smbios(RISCVVirtState *s)
}
}
+static void virt_powerdown_req(Notifier *notifier, void *opaque)
+{
+ RISCVVirtState *s;
+
+ s = container_of(notifier, RISCVVirtState, powerdown_notifier);
+ acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
+}
+
static void virt_machine_done(Notifier *notifier, void *data)
{
RISCVVirtState *s = container_of(notifier, RISCVVirtState,
@@ -1701,6 +1728,11 @@ static void virt_machine_init(MachineState *machine)
create_platform_bus(s, mmio_irqchip);
+ /* acpi ged */
+ if (virt_is_acpi_enabled(s)) {
+ s->acpi_ged = create_acpi_ged(s, mmio_irqchip);
+ }
+
serial_mm_init(system_memory, s->memmap[VIRT_UART0].base,
0, qdev_get_gpio_in(mmio_irqchip, UART0_IRQ), 399193,
serial_hd(0), DEVICE_LITTLE_ENDIAN);
@@ -1742,6 +1774,9 @@ static void virt_machine_init(MachineState *machine)
sysbus_realize_and_unref(SYS_BUS_DEVICE(iommu_sys), &error_fatal);
}
+ s->powerdown_notifier.notify = virt_powerdown_req;
+ qemu_register_powerdown_notifier(&s->powerdown_notifier);
+
s->machine_done.notify = virt_machine_done;
qemu_add_machine_init_done_notifier(&s->machine_done);
}
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
index 7b4c2c8b7d..9422b45d0c 100644
--- a/include/hw/riscv/virt.h
+++ b/include/hw/riscv/virt.h
@@ -47,6 +47,8 @@ struct RISCVVirtState {
/*< public >*/
Notifier machine_done;
+ Notifier powerdown_notifier;
+ DeviceState *acpi_ged;
DeviceState *platform_bus_dev;
RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
DeviceState *irqchip[VIRT_SOCKETS_MAX];
@@ -88,9 +90,11 @@ enum {
VIRT_PLATFORM_BUS,
VIRT_PCIE_ECAM,
VIRT_IOMMU_SYS,
+ VIRT_ACPI_GED,
};
enum {
+ ACPI_GED_IRQ = 9,
UART0_IRQ = 10,
RTC_IRQ = 11,
VIRTIO_IRQ = 1, /* 1 to 8 */
diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
index dfb8523c8b..8e85fcdee9 100644
--- a/tests/qtest/bios-tables-test-allowed-diff.h
+++ b/tests/qtest/bios-tables-test-allowed-diff.h
@@ -1 +1,2 @@
/* List of comma-separated changed AML files to ignore */
+"tests/data/acpi/riscv64/virt/DSDT",
--
2.27.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V
2025-11-13 1:27 [PATCH v4 RESEND 0/2] hw/riscv/virt: Add acpi ged and powerdown support liu.xuemei1
2025-11-13 1:30 ` [PATCH v4 RESEND 1/2] " liu.xuemei1
@ 2025-11-13 1:44 ` liu.xuemei1
2025-11-17 12:54 ` Daniel Henrique Barboza
1 sibling, 1 reply; 6+ messages in thread
From: liu.xuemei1 @ 2025-11-13 1:44 UTC (permalink / raw)
To: imammedo, alistair.francis, dbarboza, sunilvl, anisinha
Cc: pbonzini, palmer, liwei1518, zhiwei_liu, mst, qemu-devel,
qemu-riscv, liu.xuemei1
From: Xuemei Liu <liu.xuemei1@zte.com.cn>
Update the reference DSDT blob to include acpi ged and power button
for RISC-V.
DSDT diff:
})
}
}
+
+ Device (\_SB.GED)
+ {
+ Name (_HID, "ACPI0013" /* Generic Event Device */) // _HID: Hardware ID
+ Name (_UID, "GED") // _UID: Unique ID
+ Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
+ {
+ Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, ,, )
+ {
+ 0x00000009,
+ }
+ })
+ OperationRegion (EREG, SystemMemory, 0x10101000, 0x04)
+ Field (EREG, DWordAcc, NoLock, WriteAsZeros)
+ {
+ ESEL, 32
+ }
+
+ Method (_EVT, 1, Serialized) // _EVT: Event
+ {
+ Local0 = ESEL /* \_SB_.GED_.ESEL */
+ If (((Local0 & 0x02) == 0x02))
+ {
+ Notify (PWRB, 0x80) // Status Change
+ }
+ }
+ }
+
+ Device (PWRB)
+ {
+ Name (_HID, "PNP0C0C" /* Power Button Device */) // _HID: Hardware ID
+ Name (_UID, Zero) // _UID: Unique ID
+ }
}
}
Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
---
tests/data/acpi/riscv64/virt/DSDT | Bin 3538 -> 3681 bytes
tests/qtest/bios-tables-test-allowed-diff.h | 1 -
2 files changed, 1 deletion(-)
diff --git a/tests/data/acpi/riscv64/virt/DSDT b/tests/data/acpi/riscv64/virt/DSDT
index 968e1a15c87bb5753b3a84ddb357e26312767220..90de02e889f0057cbaeadb932ae135e2ca8943c9 100644
GIT binary patch
delta 170
zcmca4{ZNL>CD<h-k&l6a>CZ$iX(pe?8`W3y)<-uvvB&7e2Rp^PySl`4#Cv$U@H#pN
zcp4ZO8Z&UjhXT1k2_VZkC|Hn>i@TGJftit$fq|itA-cge$km;Jhe1F<fQu!%ksHKy
zb`5s*Q4o=hcMS{SEC6v576?qPPT*o<;9_bE2oG}NYKU%<1TjFC3ApeE_yrg^8#qHO
GV*mhK>?tS!
delta 25
hcmaDTb4i-ZCD<k85-$S-lj=k+X(r!W8`W3y0sv*P2bll>
diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
index 8e85fcdee9..dfb8523c8b 100644
--- a/tests/qtest/bios-tables-test-allowed-diff.h
+++ b/tests/qtest/bios-tables-test-allowed-diff.h
@@ -1,2 +1 @@
/* List of comma-separated changed AML files to ignore */
-"tests/data/acpi/riscv64/virt/DSDT",
--
2.27.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v4 RESEND 1/2] hw/riscv/virt: Add acpi ged and powerdown support
2025-11-13 1:30 ` [PATCH v4 RESEND 1/2] " liu.xuemei1
@ 2025-11-17 10:01 ` Daniel Henrique Barboza
2025-12-10 13:54 ` Igor Mammedov
1 sibling, 0 replies; 6+ messages in thread
From: Daniel Henrique Barboza @ 2025-11-17 10:01 UTC (permalink / raw)
To: liu.xuemei1, imammedo, alistair.francis, sunilvl, anisinha
Cc: pbonzini, palmer, liwei1518, zhiwei_liu, mst, qemu-devel,
qemu-riscv
On 11/12/25 10:30 PM, liu.xuemei1@zte.com.cn wrote:
> From: Xuemei Liu <liu.xuemei1@zte.com.cn>
>
> This adds powerdown support by implementing the ACPI GED.
>
> Co-authored-by: Björn Töpel <bjorn@rivosinc.com>
> Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
> ---
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> hw/riscv/Kconfig | 1 +
> hw/riscv/virt-acpi-build.c | 10 ++++++
> hw/riscv/virt.c | 35 +++++++++++++++++++++
> include/hw/riscv/virt.h | 4 +++
> tests/qtest/bios-tables-test-allowed-diff.h | 1 +
> 5 files changed, 51 insertions(+)
>
> diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
> index fc9c35bd98..f89a6e3672 100644
> --- a/hw/riscv/Kconfig
> +++ b/hw/riscv/Kconfig
> @@ -68,6 +68,7 @@ config RISCV_VIRT
> select PLATFORM_BUS
> select ACPI
> select ACPI_PCI
> + select ACPI_HW_REDUCED
>
> config SHAKTI_C
> bool
> diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
> index f1406cb683..64fd8aa426 100644
> --- a/hw/riscv/virt-acpi-build.c
> +++ b/hw/riscv/virt-acpi-build.c
> @@ -27,6 +27,7 @@
> #include "hw/acpi/acpi-defs.h"
> #include "hw/acpi/acpi.h"
> #include "hw/acpi/aml-build.h"
> +#include "hw/acpi/generic_event_device.h"
> #include "hw/acpi/pci.h"
> #include "hw/acpi/utils.h"
> #include "hw/intc/riscv_aclint.h"
> @@ -498,6 +499,15 @@ static void build_dsdt(GArray *table_data,
> acpi_dsdt_add_gpex_host(scope, PCIE_IRQ + VIRT_IRQCHIP_NUM_SOURCES * 2);
> }
>
> + if (s->acpi_ged) {
> + build_ged_aml(scope, "\\_SB."GED_DEVICE,
> + HOTPLUG_HANDLER(s->acpi_ged),
> + ACPI_GED_IRQ, AML_SYSTEM_MEMORY,
> + s->memmap[VIRT_ACPI_GED].base);
> + }
> +
> + acpi_dsdt_add_power_button(scope);
> +
> aml_append(dsdt, scope);
>
> /* copy AML table into ACPI tables blob and patch header there */
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index 17909206c7..a853184105 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -51,10 +51,12 @@
> #include "system/kvm.h"
> #include "system/tpm.h"
> #include "system/qtest.h"
> +#include "system/runstate.h"
> #include "hw/pci/pci.h"
> #include "hw/pci-host/gpex.h"
> #include "hw/display/ramfb.h"
> #include "hw/acpi/aml-build.h"
> +#include "hw/acpi/generic_event_device.h"
> #include "qapi/qapi-visit-common.h"
> #include "hw/virtio/virtio-iommu.h"
> #include "hw/uefi/var-service-api.h"
> @@ -95,6 +97,7 @@ static const MemMapEntry virt_memmap[] = {
> [VIRT_UART0] = { 0x10000000, 0x100 },
> [VIRT_VIRTIO] = { 0x10001000, 0x1000 },
> [VIRT_FW_CFG] = { 0x10100000, 0x18 },
> + [VIRT_ACPI_GED] = { 0x10101000, ACPI_GED_EVT_SEL_LEN },
> [VIRT_FLASH] = { 0x20000000, 0x4000000 },
> [VIRT_IMSIC_M] = { 0x24000000, VIRT_IMSIC_MAX_SIZE },
> [VIRT_IMSIC_S] = { 0x28000000, VIRT_IMSIC_MAX_SIZE },
> @@ -1270,6 +1273,22 @@ static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
> return dev;
> }
>
> +static DeviceState *create_acpi_ged(RISCVVirtState *s, DeviceState *irqchip)
> +{
> + DeviceState *dev;
> + uint32_t event = ACPI_GED_PWR_DOWN_EVT;
> +
> + dev = qdev_new(TYPE_ACPI_GED);
> + qdev_prop_set_uint32(dev, "ged-event", event);
> + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
> +
> + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, s->memmap[VIRT_ACPI_GED].base);
> + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
> + qdev_get_gpio_in(irqchip, ACPI_GED_IRQ));
> +
> + return dev;
> +}
> +
> static FWCfgState *create_fw_cfg(const MachineState *ms, hwaddr base)
> {
> FWCfgState *fw_cfg;
> @@ -1428,6 +1447,14 @@ static void virt_build_smbios(RISCVVirtState *s)
> }
> }
>
> +static void virt_powerdown_req(Notifier *notifier, void *opaque)
> +{
> + RISCVVirtState *s;
> +
> + s = container_of(notifier, RISCVVirtState, powerdown_notifier);
> + acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
> +}
> +
> static void virt_machine_done(Notifier *notifier, void *data)
> {
> RISCVVirtState *s = container_of(notifier, RISCVVirtState,
> @@ -1701,6 +1728,11 @@ static void virt_machine_init(MachineState *machine)
>
> create_platform_bus(s, mmio_irqchip);
>
> + /* acpi ged */
> + if (virt_is_acpi_enabled(s)) {
> + s->acpi_ged = create_acpi_ged(s, mmio_irqchip);
> + }
> +
> serial_mm_init(system_memory, s->memmap[VIRT_UART0].base,
> 0, qdev_get_gpio_in(mmio_irqchip, UART0_IRQ), 399193,
> serial_hd(0), DEVICE_LITTLE_ENDIAN);
> @@ -1742,6 +1774,9 @@ static void virt_machine_init(MachineState *machine)
> sysbus_realize_and_unref(SYS_BUS_DEVICE(iommu_sys), &error_fatal);
> }
>
> + s->powerdown_notifier.notify = virt_powerdown_req;
> + qemu_register_powerdown_notifier(&s->powerdown_notifier);
> +
> s->machine_done.notify = virt_machine_done;
> qemu_add_machine_init_done_notifier(&s->machine_done);
> }
> diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
> index 7b4c2c8b7d..9422b45d0c 100644
> --- a/include/hw/riscv/virt.h
> +++ b/include/hw/riscv/virt.h
> @@ -47,6 +47,8 @@ struct RISCVVirtState {
>
> /*< public >*/
> Notifier machine_done;
> + Notifier powerdown_notifier;
> + DeviceState *acpi_ged;
> DeviceState *platform_bus_dev;
> RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
> DeviceState *irqchip[VIRT_SOCKETS_MAX];
> @@ -88,9 +90,11 @@ enum {
> VIRT_PLATFORM_BUS,
> VIRT_PCIE_ECAM,
> VIRT_IOMMU_SYS,
> + VIRT_ACPI_GED,
> };
>
> enum {
> + ACPI_GED_IRQ = 9,
> UART0_IRQ = 10,
> RTC_IRQ = 11,
> VIRTIO_IRQ = 1, /* 1 to 8 */
> diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
> index dfb8523c8b..8e85fcdee9 100644
> --- a/tests/qtest/bios-tables-test-allowed-diff.h
> +++ b/tests/qtest/bios-tables-test-allowed-diff.h
> @@ -1 +1,2 @@
> /* List of comma-separated changed AML files to ignore */
> +"tests/data/acpi/riscv64/virt/DSDT",
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V
2025-11-13 1:44 ` [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V liu.xuemei1
@ 2025-11-17 12:54 ` Daniel Henrique Barboza
0 siblings, 0 replies; 6+ messages in thread
From: Daniel Henrique Barboza @ 2025-11-17 12:54 UTC (permalink / raw)
To: liu.xuemei1, imammedo, alistair.francis, sunilvl, anisinha
Cc: pbonzini, palmer, liwei1518, zhiwei_liu, mst, qemu-devel,
qemu-riscv
On 11/12/25 10:44 PM, liu.xuemei1@zte.com.cn wrote:
> From: Xuemei Liu <liu.xuemei1@zte.com.cn>
>
> Update the reference DSDT blob to include acpi ged and power button
> for RISC-V.
>
> DSDT diff:
> })
> }
> }
> +
> + Device (\_SB.GED)
> + {
> + Name (_HID, "ACPI0013" /* Generic Event Device */) // _HID: Hardware ID
> + Name (_UID, "GED") // _UID: Unique ID
> + Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings
> + {
> + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, ,, )
> + {
> + 0x00000009,
> + }
> + })
> + OperationRegion (EREG, SystemMemory, 0x10101000, 0x04)
> + Field (EREG, DWordAcc, NoLock, WriteAsZeros)
> + {
> + ESEL, 32
> + }
> +
> + Method (_EVT, 1, Serialized) // _EVT: Event
> + {
> + Local0 = ESEL /* \_SB_.GED_.ESEL */
> + If (((Local0 & 0x02) == 0x02))
> + {
> + Notify (PWRB, 0x80) // Status Change
> + }
> + }
> + }
> +
> + Device (PWRB)
> + {
> + Name (_HID, "PNP0C0C" /* Power Button Device */) // _HID: Hardware ID
> + Name (_UID, Zero) // _UID: Unique ID
> + }
> }
> }
>
> Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
> ---
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
> tests/data/acpi/riscv64/virt/DSDT | Bin 3538 -> 3681 bytes
> tests/qtest/bios-tables-test-allowed-diff.h | 1 -
> 2 files changed, 1 deletion(-)
>
> diff --git a/tests/data/acpi/riscv64/virt/DSDT b/tests/data/acpi/riscv64/virt/DSDT
> index 968e1a15c87bb5753b3a84ddb357e26312767220..90de02e889f0057cbaeadb932ae135e2ca8943c9 100644
> GIT binary patch
> delta 170
> zcmca4{ZNL>CD<h-k&l6a>CZ$iX(pe?8`W3y)<-uvvB&7e2Rp^PySl`4#Cv$U@H#pN
> zcp4ZO8Z&UjhXT1k2_VZkC|Hn>i@TGJftit$fq|itA-cge$km;Jhe1F<fQu!%ksHKy
> zb`5s*Q4o=hcMS{SEC6v576?qPPT*o<;9_bE2oG}NYKU%<1TjFC3ApeE_yrg^8#qHO
> GV*mhK>?tS!
>
> delta 25
> hcmaDTb4i-ZCD<k85-$S-lj=k+X(r!W8`W3y0sv*P2bll>
>
> diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
> index 8e85fcdee9..dfb8523c8b 100644
> --- a/tests/qtest/bios-tables-test-allowed-diff.h
> +++ b/tests/qtest/bios-tables-test-allowed-diff.h
> @@ -1,2 +1 @@
> /* List of comma-separated changed AML files to ignore */
> -"tests/data/acpi/riscv64/virt/DSDT",
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v4 RESEND 1/2] hw/riscv/virt: Add acpi ged and powerdown support
2025-11-13 1:30 ` [PATCH v4 RESEND 1/2] " liu.xuemei1
2025-11-17 10:01 ` Daniel Henrique Barboza
@ 2025-12-10 13:54 ` Igor Mammedov
1 sibling, 0 replies; 6+ messages in thread
From: Igor Mammedov @ 2025-12-10 13:54 UTC (permalink / raw)
To: liu.xuemei1
Cc: alistair.francis, dbarboza, sunilvl, anisinha, pbonzini, palmer,
liwei1518, zhiwei_liu, mst, qemu-devel, qemu-riscv
On Thu, 13 Nov 2025 09:30:22 +0800 (CST)
<liu.xuemei1@zte.com.cn> wrote:
> From: Xuemei Liu <liu.xuemei1@zte.com.cn>
>
> This adds powerdown support by implementing the ACPI GED.
>
> Co-authored-by: Björn Töpel <bjorn@rivosinc.com>
> Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
> ---
> hw/riscv/Kconfig | 1 +
> hw/riscv/virt-acpi-build.c | 10 ++++++
> hw/riscv/virt.c | 35 +++++++++++++++++++++
> include/hw/riscv/virt.h | 4 +++
> tests/qtest/bios-tables-test-allowed-diff.h | 1 +
> 5 files changed, 51 insertions(+)
>
> diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig
> index fc9c35bd98..f89a6e3672 100644
> --- a/hw/riscv/Kconfig
> +++ b/hw/riscv/Kconfig
> @@ -68,6 +68,7 @@ config RISCV_VIRT
> select PLATFORM_BUS
> select ACPI
> select ACPI_PCI
> + select ACPI_HW_REDUCED
>
> config SHAKTI_C
> bool
> diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
> index f1406cb683..64fd8aa426 100644
> --- a/hw/riscv/virt-acpi-build.c
> +++ b/hw/riscv/virt-acpi-build.c
> @@ -27,6 +27,7 @@
> #include "hw/acpi/acpi-defs.h"
> #include "hw/acpi/acpi.h"
> #include "hw/acpi/aml-build.h"
> +#include "hw/acpi/generic_event_device.h"
> #include "hw/acpi/pci.h"
> #include "hw/acpi/utils.h"
> #include "hw/intc/riscv_aclint.h"
> @@ -498,6 +499,15 @@ static void build_dsdt(GArray *table_data,
> acpi_dsdt_add_gpex_host(scope, PCIE_IRQ + VIRT_IRQCHIP_NUM_SOURCES * 2);
> }
>
> + if (s->acpi_ged) {
> + build_ged_aml(scope, "\\_SB."GED_DEVICE,
> + HOTPLUG_HANDLER(s->acpi_ged),
> + ACPI_GED_IRQ, AML_SYSTEM_MEMORY,
> + s->memmap[VIRT_ACPI_GED].base);
> + }
> +
> + acpi_dsdt_add_power_button(scope);
I suggest splitting patch on adding GED 1st and only then adding power button on top of it
> +
> aml_append(dsdt, scope);
>
> /* copy AML table into ACPI tables blob and patch header there */
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index 17909206c7..a853184105 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -51,10 +51,12 @@
> #include "system/kvm.h"
> #include "system/tpm.h"
> #include "system/qtest.h"
> +#include "system/runstate.h"
> #include "hw/pci/pci.h"
> #include "hw/pci-host/gpex.h"
> #include "hw/display/ramfb.h"
> #include "hw/acpi/aml-build.h"
> +#include "hw/acpi/generic_event_device.h"
> #include "qapi/qapi-visit-common.h"
> #include "hw/virtio/virtio-iommu.h"
> #include "hw/uefi/var-service-api.h"
> @@ -95,6 +97,7 @@ static const MemMapEntry virt_memmap[] = {
> [VIRT_UART0] = { 0x10000000, 0x100 },
> [VIRT_VIRTIO] = { 0x10001000, 0x1000 },
> [VIRT_FW_CFG] = { 0x10100000, 0x18 },
> + [VIRT_ACPI_GED] = { 0x10101000, ACPI_GED_EVT_SEL_LEN },
> [VIRT_FLASH] = { 0x20000000, 0x4000000 },
> [VIRT_IMSIC_M] = { 0x24000000, VIRT_IMSIC_MAX_SIZE },
> [VIRT_IMSIC_S] = { 0x28000000, VIRT_IMSIC_MAX_SIZE },
> @@ -1270,6 +1273,22 @@ static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
> return dev;
> }
>
> +static DeviceState *create_acpi_ged(RISCVVirtState *s, DeviceState *irqchip)
> +{
> + DeviceState *dev;
> + uint32_t event = ACPI_GED_PWR_DOWN_EVT;
> +
> + dev = qdev_new(TYPE_ACPI_GED);
> + qdev_prop_set_uint32(dev, "ged-event", event);
> + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
> +
> + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, s->memmap[VIRT_ACPI_GED].base);
> + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
> + qdev_get_gpio_in(irqchip, ACPI_GED_IRQ));
> +
> + return dev;
> +}
> +
> static FWCfgState *create_fw_cfg(const MachineState *ms, hwaddr base)
> {
> FWCfgState *fw_cfg;
> @@ -1428,6 +1447,14 @@ static void virt_build_smbios(RISCVVirtState *s)
> }
> }
>
> +static void virt_powerdown_req(Notifier *notifier, void *opaque)
> +{
> + RISCVVirtState *s;
> +
> + s = container_of(notifier, RISCVVirtState, powerdown_notifier);
> + acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
Can acpi_ged be NULL at this point? /in the next hunk I see it being a conditional/
> +}
> +
> static void virt_machine_done(Notifier *notifier, void *data)
> {
> RISCVVirtState *s = container_of(notifier, RISCVVirtState,
> @@ -1701,6 +1728,11 @@ static void virt_machine_init(MachineState *machine)
>
> create_platform_bus(s, mmio_irqchip);
>
> + /* acpi ged */
> + if (virt_is_acpi_enabled(s)) {
> + s->acpi_ged = create_acpi_ged(s, mmio_irqchip);
> + }
> +
> serial_mm_init(system_memory, s->memmap[VIRT_UART0].base,
> 0, qdev_get_gpio_in(mmio_irqchip, UART0_IRQ), 399193,
> serial_hd(0), DEVICE_LITTLE_ENDIAN);
> @@ -1742,6 +1774,9 @@ static void virt_machine_init(MachineState *machine)
> sysbus_realize_and_unref(SYS_BUS_DEVICE(iommu_sys), &error_fatal);
> }
>
> + s->powerdown_notifier.notify = virt_powerdown_req;
> + qemu_register_powerdown_notifier(&s->powerdown_notifier);
> +
> s->machine_done.notify = virt_machine_done;
> qemu_add_machine_init_done_notifier(&s->machine_done);
> }
> diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
> index 7b4c2c8b7d..9422b45d0c 100644
> --- a/include/hw/riscv/virt.h
> +++ b/include/hw/riscv/virt.h
> @@ -47,6 +47,8 @@ struct RISCVVirtState {
>
> /*< public >*/
> Notifier machine_done;
> + Notifier powerdown_notifier;
> + DeviceState *acpi_ged;
> DeviceState *platform_bus_dev;
> RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
> DeviceState *irqchip[VIRT_SOCKETS_MAX];
> @@ -88,9 +90,11 @@ enum {
> VIRT_PLATFORM_BUS,
> VIRT_PCIE_ECAM,
> VIRT_IOMMU_SYS,
> + VIRT_ACPI_GED,
> };
>
> enum {
> + ACPI_GED_IRQ = 9,
> UART0_IRQ = 10,
> RTC_IRQ = 11,
> VIRTIO_IRQ = 1, /* 1 to 8 */
> diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
> index dfb8523c8b..8e85fcdee9 100644
> --- a/tests/qtest/bios-tables-test-allowed-diff.h
> +++ b/tests/qtest/bios-tables-test-allowed-diff.h
> @@ -1 +1,2 @@
> /* List of comma-separated changed AML files to ignore */
> +"tests/data/acpi/riscv64/virt/DSDT",
I'd split it out in a separate whitelist patch like we usually do elsewhere.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-12-10 13:55 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2025-11-13 1:27 [PATCH v4 RESEND 0/2] hw/riscv/virt: Add acpi ged and powerdown support liu.xuemei1
2025-11-13 1:30 ` [PATCH v4 RESEND 1/2] " liu.xuemei1
2025-11-17 10:01 ` Daniel Henrique Barboza
2025-12-10 13:54 ` Igor Mammedov
2025-11-13 1:44 ` [PATCH v4 RESEND 2/2] tests/acpi: Add acpi ged and power button in DSDT for RISC-V liu.xuemei1
2025-11-17 12:54 ` Daniel Henrique Barboza
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