From: Björn Töpel <bj...@rivosinc.com> Add ACPI GED for the RISC-V "virt" machine, and wire up PC-DIMM memory hotplugging support. Heavily based/copied from hw/arm/virt.c.
Signed-off-by: Björn Töpel <bj...@rivosinc.com> --- hw/riscv/Kconfig | 3 ++ hw/riscv/virt-acpi-build.c | 16 ++++++ hw/riscv/virt.c | 104 ++++++++++++++++++++++++++++++++++++- include/hw/riscv/virt.h | 6 ++- 4 files changed, 126 insertions(+), 3 deletions(-) diff --git a/hw/riscv/Kconfig b/hw/riscv/Kconfig index 08f82dbb681a..bebe412f2107 100644 --- a/hw/riscv/Kconfig +++ b/hw/riscv/Kconfig @@ -56,6 +56,9 @@ config RISCV_VIRT select PLATFORM_BUS select ACPI select ACPI_PCI + select MEM_DEVICE + select DIMM + select ACPI_HW_REDUCED select VIRTIO_MEM_SUPPORTED select VIRTIO_PMEM_SUPPORTED diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c index 6dc3baa9ec86..61813abdef3f 100644 --- a/hw/riscv/virt-acpi-build.c +++ b/hw/riscv/virt-acpi-build.c @@ -27,6 +27,8 @@ #include "hw/acpi/acpi-defs.h" #include "hw/acpi/acpi.h" #include "hw/acpi/aml-build.h" +#include "hw/acpi/memory_hotplug.h" +#include "hw/acpi/generic_event_device.h" #include "hw/acpi/pci.h" #include "hw/acpi/utils.h" #include "hw/intc/riscv_aclint.h" @@ -432,6 +434,20 @@ static void build_dsdt(GArray *table_data, acpi_dsdt_add_gpex_host(scope, PCIE_IRQ + VIRT_IRQCHIP_NUM_SOURCES * 2); } + if (s->acpi_dev) { + uint32_t event = object_property_get_uint(OBJECT(s->acpi_dev), + "ged-event", &error_abort); + + build_ged_aml(scope, "\\_SB."GED_DEVICE, HOTPLUG_HANDLER(s->acpi_dev), + GED_IRQ, AML_SYSTEM_MEMORY, memmap[VIRT_ACPI_GED].base); + + if (event & ACPI_GED_MEM_HOTPLUG_EVT) { + build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL, + AML_SYSTEM_MEMORY, + memmap[VIRT_PCDIMM_ACPI].base); + } + } + 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 443902f919d2..2e35890187f2 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -53,10 +53,13 @@ #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 "hw/acpi/memory_hotplug.h" #include "hw/mem/memory-device.h" #include "hw/virtio/virtio-mem-pci.h" #include "qapi/qapi-visit-common.h" #include "hw/virtio/virtio-iommu.h" +#include "hw/mem/pc-dimm.h" /* KVM AIA only supports APLIC MSI. APLIC Wired is always emulated by QEMU. */ static bool virt_use_kvm_aia(RISCVVirtState *s) @@ -84,6 +87,8 @@ static const MemMapEntry virt_memmap[] = { [VIRT_UART0] = { 0x10000000, 0x100 }, [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, [VIRT_FW_CFG] = { 0x10100000, 0x18 }, + [VIRT_PCDIMM_ACPI] = { 0x10200000, MEMORY_HOTPLUG_IO_LEN }, + [VIRT_ACPI_GED] = { 0x10210000, 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 }, @@ -1400,6 +1405,28 @@ static void virt_machine_done(Notifier *notifier, void *data) } } +static DeviceState *create_acpi_ged(RISCVVirtState *s) +{ + DeviceState *dev; + MachineState *ms = MACHINE(s); + uint32_t event = 0; + + if (ms->ram_slots) { + event |= ACPI_GED_MEM_HOTPLUG_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_mmio_map(SYS_BUS_DEVICE(dev), 1, s->memmap[VIRT_PCDIMM_ACPI].base); + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(s->irqchip[0], + GED_IRQ)); + + return dev; +} + static void virt_machine_init(MachineState *machine) { const MemMapEntry *memmap = virt_memmap; @@ -1612,6 +1639,10 @@ static void virt_machine_init(MachineState *machine) gpex_pcie_init(system_memory, pcie_irqchip, s); + if (virt_is_acpi_enabled(s)) { + s->acpi_dev = create_acpi_ged(s); + } + create_platform_bus(s, mmio_irqchip); serial_mm_init(system_memory, memmap[VIRT_UART0].base, @@ -1752,6 +1783,7 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, MachineClass *mc = MACHINE_GET_CLASS(machine); if (device_is_dynamic_sysbus(mc, dev) || + object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { return HOTPLUG_HANDLER(machine); @@ -1759,14 +1791,42 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine, return NULL; } +static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, + Error **errp) +{ + RISCVVirtState *s = RISCV_VIRT_MACHINE(hotplug_dev); + + if (!s->acpi_dev) { + 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); +} + static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + virt_memory_pre_plug(hotplug_dev, dev, errp); + } + if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } } +static void virt_memory_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + RISCVVirtState *s = RISCV_VIRT_MACHINE(hotplug_dev); + + pc_dimm_plug(PC_DIMM(dev), MACHINE(s)); + + hotplug_handler_plug(HOTPLUG_HANDLER(s->acpi_dev), dev, &error_abort); +} + static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -1785,16 +1845,36 @@ static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev, create_fdt_virtio_iommu(s, pci_get_bdf(PCI_DEVICE(dev))); } + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + virt_memory_plug(hotplug_dev, dev, errp); + } + if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } } +static void virt_dimm_unplug_request(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + RISCVVirtState *s = RISCV_VIRT_MACHINE(hotplug_dev); + + if (!s->acpi_dev) { + error_setg(errp, + "memory hotplug is not enabled: missing acpi-ged device"); + return; + } + + hotplug_handler_unplug_request(HOTPLUG_HANDLER(s->acpi_dev), dev, errp); +} + static void virt_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + virt_dimm_unplug_request(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_unplug_request(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } else { @@ -1804,10 +1884,30 @@ static void virt_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev, } } +static void virt_dimm_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + RISCVVirtState *s = RISCV_VIRT_MACHINE(hotplug_dev); + Error *local_err = NULL; + + hotplug_handler_unplug(HOTPLUG_HANDLER(s->acpi_dev), dev, &local_err); + if (local_err) { + goto out; + } + + pc_dimm_unplug(PC_DIMM(dev), MACHINE(s)); + qdev_unrealize(dev); + +out: + error_propagate(errp, local_err); +} + static void virt_machine_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { + if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { + virt_dimm_unplug(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_unplug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } else { error_setg(errp, "virt: device unplug for unsupported device" diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h index 3db839160f95..adf460a4021e 100644 --- a/include/hw/riscv/virt.h +++ b/include/hw/riscv/virt.h @@ -62,6 +62,7 @@ struct RISCVVirtState { OnOffAuto acpi; const MemMapEntry *memmap; struct GPEXHost *gpex_host; + DeviceState *acpi_dev; }; enum { @@ -84,12 +85,15 @@ enum { VIRT_PCIE_MMIO, VIRT_PCIE_PIO, VIRT_PLATFORM_BUS, - VIRT_PCIE_ECAM + VIRT_PCIE_ECAM, + VIRT_PCDIMM_ACPI, + VIRT_ACPI_GED, }; enum { UART0_IRQ = 10, RTC_IRQ = 11, + GED_IRQ = 12, VIRTIO_IRQ = 1, /* 1 to 8 */ VIRTIO_COUNT = 8, PCIE_IRQ = 0x20, /* 32 to 35 */ -- 2.40.1