From f0bc6bf725428860b479cb771e99bb33a3f5847d Mon Sep 17 00:00:00 2001 From: Bernhard Beschow Date: Fri, 19 May 2023 10:47:33 +0200 Subject: [PATCH] hw/i386/pc: Create RTC controllers in south bridges Just like in the real hardware (and in PIIX4), create the RTC controllers in the south bridges. Signed-off-by: Bernhard Beschow Reviewed-by: Michael S. Tsirkin Reviewed-by: Thomas Huth Message-Id: <20230519084734.220480-2-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/pc.c | 12 +++++++++++- hw/i386/pc_piix.c | 8 ++++++++ hw/i386/pc_q35.c | 2 ++ hw/isa/Kconfig | 2 ++ hw/isa/lpc_ich9.c | 8 ++++++++ hw/isa/piix3.c | 15 +++++++++++++++ include/hw/southbridge/ich9.h | 2 ++ include/hw/southbridge/piix.h | 3 +++ 8 files changed, 51 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 03da571bda..4a73786e20 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1318,7 +1318,17 @@ void pc_basic_device_init(struct PCMachineState *pcms, pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT); rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT); } - *rtc_state = ISA_DEVICE(mc146818_rtc_init(isa_bus, 2000, rtc_irq)); + + if (rtc_irq) { + qdev_connect_gpio_out(DEVICE(*rtc_state), 0, rtc_irq); + } else { + uint32_t irq = object_property_get_uint(OBJECT(*rtc_state), + "irq", + &error_fatal); + isa_connect_gpio_out(*rtc_state, 0, irq); + } + object_property_add_alias(OBJECT(pcms), "rtc-time", OBJECT(*rtc_state), + "date"); #ifdef CONFIG_XEN_EMU if (xen_mode == XEN_EMULATE) { diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 1acf02e711..34e81b79d0 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -32,6 +32,7 @@ #include "hw/i386/pc.h" #include "hw/i386/apic.h" #include "hw/pci-host/i440fx.h" +#include "hw/rtc/mc146818rtc.h" #include "hw/southbridge/piix.h" #include "hw/display/ramfb.h" #include "hw/firmware/smbios.h" @@ -240,10 +241,17 @@ static void pc_init1(MachineState *machine, piix3->pic = x86ms->gsi; piix3_devfn = piix3->dev.devfn; isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(piix3), "isa.0")); + rtc_state = ISA_DEVICE(object_resolve_path_component(OBJECT(pci_dev), + "rtc")); } else { pci_bus = NULL; isa_bus = isa_bus_new(NULL, system_memory, system_io, &error_abort); + + rtc_state = isa_new(TYPE_MC146818_RTC); + qdev_prop_set_int32(DEVICE(rtc_state), "base_year", 2000); + isa_realize_and_unref(rtc_state, isa_bus, &error_fatal); + i8257_dma_init(isa_bus, 0); pcms->hpet_enabled = false; } diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index c1535af739..8faeb6ce05 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -241,6 +241,8 @@ static void pc_q35_init(MachineState *machine) x86_machine_is_smm_enabled(x86ms)); pci_realize_and_unref(lpc, host_bus, &error_fatal); + rtc_state = ISA_DEVICE(object_resolve_path_component(OBJECT(lpc), "rtc")); + object_property_add_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP, TYPE_HOTPLUG_HANDLER, (Object **)&x86ms->acpi_dev, diff --git a/hw/isa/Kconfig b/hw/isa/Kconfig index 0156a66889..c10cbc5fc1 100644 --- a/hw/isa/Kconfig +++ b/hw/isa/Kconfig @@ -35,6 +35,7 @@ config PIIX3 bool select I8257 select ISA_BUS + select MC146818RTC config PIIX4 bool @@ -79,3 +80,4 @@ config LPC_ICH9 select I8257 select ISA_BUS select ACPI_ICH9 + select MC146818RTC diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c index 9714b0001e..9c47a2f6c7 100644 --- a/hw/isa/lpc_ich9.c +++ b/hw/isa/lpc_ich9.c @@ -658,6 +658,8 @@ static void ich9_lpc_initfn(Object *obj) static const uint8_t acpi_enable_cmd = ICH9_APM_ACPI_ENABLE; static const uint8_t acpi_disable_cmd = ICH9_APM_ACPI_DISABLE; + object_initialize_child(obj, "rtc", &lpc->rtc, TYPE_MC146818_RTC); + object_property_add_uint8_ptr(obj, ACPI_PM_PROP_SCI_INT, &lpc->sci_gsi, OBJ_PROP_FLAG_READ); object_property_add_uint8_ptr(OBJECT(lpc), ACPI_PM_PROP_ACPI_ENABLE_CMD, @@ -723,6 +725,12 @@ static void ich9_lpc_realize(PCIDevice *d, Error **errp) i8257_dma_init(isa_bus, 0); + /* RTC */ + qdev_prop_set_int32(DEVICE(&lpc->rtc), "base_year", 2000); + if (!qdev_realize(DEVICE(&lpc->rtc), BUS(isa_bus), errp)) { + return; + } + pci_bus_irqs(pci_bus, ich9_lpc_set_irq, d, ICH9_LPC_NB_PIRQS); pci_bus_map_irqs(pci_bus, ich9_lpc_map_irq); pci_bus_set_route_irq_fn(pci_bus, ich9_route_intx_pin_to_irq); diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c index a9cb39bf21..f9103ea45a 100644 --- a/hw/isa/piix3.c +++ b/hw/isa/piix3.c @@ -28,6 +28,7 @@ #include "hw/dma/i8257.h" #include "hw/southbridge/piix.h" #include "hw/irq.h" +#include "hw/qdev-properties.h" #include "hw/isa/isa.h" #include "hw/xen/xen.h" #include "sysemu/runstate.h" @@ -301,6 +302,12 @@ static void pci_piix3_realize(PCIDevice *dev, Error **errp) PIIX_RCR_IOPORT, &d->rcr_mem, 1); i8257_dma_init(isa_bus, 0); + + /* RTC */ + qdev_prop_set_int32(DEVICE(&d->rtc), "base_year", 2000); + if (!qdev_realize(DEVICE(&d->rtc), BUS(isa_bus), errp)) { + return; + } } static void build_pci_isa_aml(AcpiDevAmlIf *adev, Aml *scope) @@ -324,6 +331,13 @@ static void build_pci_isa_aml(AcpiDevAmlIf *adev, Aml *scope) qbus_build_aml(bus, scope); } +static void pci_piix3_init(Object *obj) +{ + PIIX3State *d = PIIX3_PCI_DEVICE(obj); + + object_initialize_child(obj, "rtc", &d->rtc, TYPE_MC146818_RTC); +} + static void pci_piix3_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -350,6 +364,7 @@ static const TypeInfo piix3_pci_type_info = { .name = TYPE_PIIX3_PCI_DEVICE, .parent = TYPE_PCI_DEVICE, .instance_size = sizeof(PIIX3State), + .instance_init = pci_piix3_init, .abstract = true, .class_init = pci_piix3_class_init, .interfaces = (InterfaceInfo[]) { diff --git a/include/hw/southbridge/ich9.h b/include/hw/southbridge/ich9.h index 7004eecbf9..fd01649d04 100644 --- a/include/hw/southbridge/ich9.h +++ b/include/hw/southbridge/ich9.h @@ -6,6 +6,7 @@ #include "hw/intc/ioapic.h" #include "hw/pci/pci.h" #include "hw/pci/pci_device.h" +#include "hw/rtc/mc146818rtc.h" #include "exec/memory.h" #include "qemu/notify.h" #include "qom/object.h" @@ -30,6 +31,7 @@ struct ICH9LPCState { */ uint8_t irr[PCI_SLOT_MAX][PCI_NUM_PINS]; + MC146818RtcState rtc; APMState apm; ICH9LPCPMRegs pm; uint32_t sci_level; /* track sci level */ diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h index 0bf48e936d..a840340308 100644 --- a/include/hw/southbridge/piix.h +++ b/include/hw/southbridge/piix.h @@ -13,6 +13,7 @@ #define HW_SOUTHBRIDGE_PIIX_H #include "hw/pci/pci_device.h" +#include "hw/rtc/mc146818rtc.h" /* PIRQRC[A:D]: PIRQx Route Control Registers */ #define PIIX_PIRQCA 0x60 @@ -51,6 +52,8 @@ struct PIIXState { /* This member isn't used. Just for save/load compatibility */ int32_t pci_irq_levels_vmstate[PIIX_NUM_PIRQS]; + MC146818RtcState rtc; + /* Reset Control Register contents */ uint8_t rcr;