diff options
Diffstat (limited to 'hw/loongarch/virt.c')
| -rw-r--r-- | hw/loongarch/virt.c | 184 |
1 files changed, 151 insertions, 33 deletions
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 3e6e93edf3..66cef201ab 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -11,6 +11,7 @@ #include "hw/boards.h" #include "hw/char/serial.h" #include "sysemu/kvm.h" +#include "sysemu/tcg.h" #include "sysemu/sysemu.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" @@ -45,8 +46,34 @@ #include "sysemu/tpm.h" #include "sysemu/block-backend.h" #include "hw/block/flash.h" +#include "hw/virtio/virtio-iommu.h" #include "qemu/error-report.h" +static bool virt_is_veiointc_enabled(LoongArchVirtMachineState *lvms) +{ + if (lvms->veiointc == ON_OFF_AUTO_OFF) { + return false; + } + return true; +} + +static void virt_get_veiointc(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + OnOffAuto veiointc = lvms->veiointc; + + visit_type_OnOffAuto(v, name, &veiointc, errp); +} + +static void virt_set_veiointc(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + + visit_type_OnOffAuto(v, name, &lvms->veiointc, errp); +} + static PFlashCFI01 *virt_flash_create1(LoongArchVirtMachineState *lvms, const char *name, const char *alias_prop_name) @@ -717,25 +744,47 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) uint32_t cpuintc_phandle, eiointc_phandle, pch_pic_phandle, pch_msi_phandle; /* - * The connection of interrupts: - * +-----+ +---------+ +-------+ - * | IPI |--> | CPUINTC | <-- | Timer | - * +-----+ +---------+ +-------+ - * ^ - * | - * +---------+ - * | EIOINTC | - * +---------+ - * ^ ^ - * | | - * +---------+ +---------+ - * | PCH-PIC | | PCH-MSI | - * +---------+ +---------+ - * ^ ^ ^ - * | | | - * +--------+ +---------+ +---------+ - * | UARTs | | Devices | | Devices | - * +--------+ +---------+ +---------+ + * Extended IRQ model. + * | + * +-----------+ +-------------|--------+ +-----------+ + * | IPI/Timer | --> | CPUINTC(0-3)|(4-255) | <-- | IPI/Timer | + * +-----------+ +-------------|--------+ +-----------+ + * ^ | + * | + * +---------+ + * | EIOINTC | + * +---------+ + * ^ ^ + * | | + * +---------+ +---------+ + * | PCH-PIC | | PCH-MSI | + * +---------+ +---------+ + * ^ ^ ^ + * | | | + * +--------+ +---------+ +---------+ + * | UARTs | | Devices | | Devices | + * +--------+ +---------+ +---------+ + * + * Virt extended IRQ model. + * + * +-----+ +---------------+ +-------+ + * | IPI |--> | CPUINTC(0-255)| <-- | Timer | + * +-----+ +---------------+ +-------+ + * ^ + * | + * +-----------+ + * | V-EIOINTC | + * +-----------+ + * ^ ^ + * | | + * +---------+ +---------+ + * | PCH-PIC | | PCH-MSI | + * +---------+ +---------+ + * ^ ^ ^ + * | | | + * +--------+ +---------+ +---------+ + * | UARTs | | Devices | | Devices | + * +--------+ +---------+ +---------+ */ /* Create IPI device */ @@ -767,9 +816,16 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) /* Create EXTIOI device */ extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); + if (virt_is_veiointc_enabled(lvms)) { + qdev_prop_set_bit(extioi, "has-virtualization-extension", true); + } sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE, - sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); + if (virt_is_veiointc_enabled(lvms)) { + memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); + } /* * connect ext irq to the cpu irq @@ -876,38 +932,91 @@ static void virt_firmware_init(LoongArchVirtMachineState *lvms) } } - -static void virt_iocsr_misc_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) +static MemTxResult virt_iocsr_misc_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size, + MemTxAttrs attrs) { + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque); + uint64_t features; + + switch (addr) { + case MISC_FUNC_REG: + if (!virt_is_veiointc_enabled(lvms)) { + return MEMTX_OK; + } + + features = address_space_ldl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + attrs, NULL); + if (val & BIT_ULL(IOCSRM_EXTIOI_EN)) { + features |= BIT(EXTIOI_ENABLE); + } + if (val & BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE)) { + features |= BIT(EXTIOI_ENABLE_INT_ENCODE); + } + + address_space_stl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + features, attrs, NULL); + break; + default: + g_assert_not_reached(); + } + + return MEMTX_OK; } -static uint64_t virt_iocsr_misc_read(void *opaque, hwaddr addr, unsigned size) +static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr, + uint64_t *data, + unsigned size, MemTxAttrs attrs) { - uint64_t ret; + LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque); + uint64_t ret = 0; + int features; switch (addr) { case VERSION_REG: - return 0x11ULL; + ret = 0x11ULL; + break; case FEATURE_REG: ret = BIT(IOCSRF_MSI) | BIT(IOCSRF_EXTIOI) | BIT(IOCSRF_CSRIPI); if (kvm_enabled()) { ret |= BIT(IOCSRF_VM); } - return ret; + break; case VENDOR_REG: - return 0x6e6f73676e6f6f4cULL; /* "Loongson" */ + ret = 0x6e6f73676e6f6f4cULL; /* "Loongson" */ + break; case CPUNAME_REG: - return 0x303030354133ULL; /* "3A5000" */ + ret = 0x303030354133ULL; /* "3A5000" */ + break; case MISC_FUNC_REG: - return BIT_ULL(IOCSRM_EXTIOI_EN); + if (!virt_is_veiointc_enabled(lvms)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_EN); + break; + } + + features = address_space_ldl(&lvms->as_iocsr, + EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG, + attrs, NULL); + if (features & BIT(EXTIOI_ENABLE)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_EN); + } + if (features & BIT(EXTIOI_ENABLE_INT_ENCODE)) { + ret |= BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE); + } + break; + default: + g_assert_not_reached(); } - return 0ULL; + + *data = ret; + return MEMTX_OK; } static const MemoryRegionOps virt_iocsr_misc_ops = { - .read = virt_iocsr_misc_read, - .write = virt_iocsr_misc_write, + .read_with_attrs = virt_iocsr_misc_read, + .write_with_attrs = virt_iocsr_misc_write, .endianness = DEVICE_LITTLE_ENDIAN, .valid = { .min_access_size = 4, @@ -1117,6 +1226,9 @@ static void virt_initfn(Object *obj) { LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj); + if (tcg_enabled()) { + lvms->veiointc = ON_OFF_AUTO_OFF; + } lvms->acpi = ON_OFF_AUTO_AUTO; lvms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); lvms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); @@ -1213,6 +1325,7 @@ static HotplugHandler *virt_get_hotplug_handler(MachineState *machine, MachineClass *mc = MACHINE_GET_CLASS(machine); if (device_is_dynamic_sysbus(mc, dev) || + object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) || memhp_type_supported(dev)) { return HOTPLUG_HANDLER(machine); } @@ -1302,6 +1415,11 @@ static void virt_class_init(ObjectClass *oc, void *data) NULL, NULL); object_class_property_set_description(oc, "acpi", "Enable ACPI"); + object_class_property_add(oc, "v-eiointc", "OnOffAuto", + virt_get_veiointc, virt_set_veiointc, + NULL, NULL); + object_class_property_set_description(oc, "v-eiointc", + "Enable Virt Extend I/O Interrupt Controller."); machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); #ifdef CONFIG_TPM machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS); 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