diff options
-rw-r--r-- | MAINTAINERS | 6 | ||||
-rw-r--r-- | hw/arm/virt-acpi-build.c | 56 | ||||
-rw-r--r-- | hw/arm/virt.c | 124 | ||||
-rw-r--r-- | hw/intc/Makefile.objs | 2 | ||||
-rw-r--r-- | hw/intc/arm_gic_kvm.c | 98 | ||||
-rw-r--r-- | hw/intc/arm_gicv3_common.c | 140 | ||||
-rw-r--r-- | hw/intc/arm_gicv3_kvm.c | 149 | ||||
-rw-r--r-- | hw/intc/vgic_common.h | 35 | ||||
-rw-r--r-- | include/hw/acpi/acpi-defs.h | 9 | ||||
-rw-r--r-- | include/hw/arm/virt-acpi-build.h | 1 | ||||
-rw-r--r-- | include/hw/arm/virt.h | 4 | ||||
-rw-r--r-- | include/hw/intc/arm_gicv3_common.h | 68 | ||||
-rw-r--r-- | include/sysemu/kvm.h | 26 | ||||
-rw-r--r-- | kvm-all.c | 34 | ||||
-rw-r--r-- | target-arm/kvm.c | 19 | ||||
-rw-r--r-- | target-arm/kvm_arm.h | 19 | ||||
-rw-r--r-- | target-arm/machine.c | 18 |
17 files changed, 686 insertions, 122 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 71c652be98..cf02890e8b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -266,10 +266,10 @@ F: *win32* ARM Machines ------------ Allwinner-a10 -M: Li Guang <lig.fnst@cn.fujitsu.com> +M: Beniamino Galvani <b.galvani@gmail.com> S: Maintained -F: hw/*/allwinner-a10* -F: include/hw/*/allwinner-a10* +F: hw/*/allwinner* +F: include/hw/*/allwinner* F: hw/arm/cubieboard.c Exynos diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 9088248c3a..1aaff1f662 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -114,7 +114,7 @@ static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap) { Aml *dev, *crs; hwaddr base = flash_memmap->base; - hwaddr size = flash_memmap->size; + hwaddr size = flash_memmap->size / 2; dev = aml_device("FLS0"); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015"))); @@ -443,33 +443,43 @@ build_madt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info, madt = acpi_data_push(table_data, sizeof *madt); - for (i = 0; i < guest_info->smp_cpus; i++) { - AcpiMadtGenericInterrupt *gicc = acpi_data_push(table_data, - sizeof *gicc); - gicc->type = ACPI_APIC_GENERIC_INTERRUPT; - gicc->length = sizeof(*gicc); - gicc->base_address = memmap[VIRT_GIC_CPU].base; - gicc->cpu_interface_number = i; - gicc->arm_mpidr = i; - gicc->uid = i; - if (test_bit(i, cpuinfo->found_cpus)) { - gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED); - } - } - gicd = acpi_data_push(table_data, sizeof *gicd); gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR; gicd->length = sizeof(*gicd); gicd->base_address = memmap[VIRT_GIC_DIST].base; - gic_msi = acpi_data_push(table_data, sizeof *gic_msi); - gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME; - gic_msi->length = sizeof(*gic_msi); - gic_msi->gic_msi_frame_id = 0; - gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base); - gic_msi->flags = cpu_to_le32(1); - gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS); - gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE); + if (guest_info->gic_version == 3) { + AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data, + sizeof *gicr); + + gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR; + gicr->length = sizeof(*gicr); + gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base); + gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size); + } else { + for (i = 0; i < guest_info->smp_cpus; i++) { + AcpiMadtGenericInterrupt *gicc = acpi_data_push(table_data, + sizeof *gicc); + gicc->type = ACPI_APIC_GENERIC_INTERRUPT; + gicc->length = sizeof(*gicc); + gicc->base_address = memmap[VIRT_GIC_CPU].base; + gicc->cpu_interface_number = i; + gicc->arm_mpidr = i; + gicc->uid = i; + if (test_bit(i, cpuinfo->found_cpus)) { + gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED); + } + } + + gic_msi = acpi_data_push(table_data, sizeof *gic_msi); + gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME; + gic_msi->length = sizeof(*gic_msi); + gic_msi->gic_msi_frame_id = 0; + gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base); + gic_msi->flags = cpu_to_le32(1); + gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS); + gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE); + } build_header(linker, table_data, (void *)(table_data->data + madt_start), "APIC", diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 6bf0d6d591..d25d6cfce7 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -51,6 +51,7 @@ #include "hw/intc/arm_gic_common.h" #include "kvm_arm.h" #include "hw/smbios/smbios.h" +#include "qapi/visitor.h" /* Number of external interrupt lines to configure the GIC with */ #define NUM_IRQS 256 @@ -81,6 +82,7 @@ typedef struct { MachineState parent; bool secure; bool highmem; + int32_t gic_version; } VirtMachineState; #define TYPE_VIRT_MACHINE MACHINE_TYPE_NAME("virt") @@ -111,6 +113,10 @@ static const MemMapEntry a15memmap[] = { [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 }, [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 }, [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 }, + /* The space in between here is reserved for GICv3 CPU/vCPU/HYP */ + [VIRT_GIC_ITS] = { 0x08080000, 0x00020000 }, + /* This redistributor space allows up to 2*64kB*123 CPUs */ + [VIRT_GIC_REDIST] = { 0x080A0000, 0x00F60000 }, [VIRT_UART] = { 0x09000000, 0x00001000 }, [VIRT_RTC] = { 0x09010000, 0x00001000 }, [VIRT_FW_CFG] = { 0x09020000, 0x0000000a }, @@ -255,7 +261,7 @@ static void fdt_add_psci_node(const VirtBoardInfo *vbi) qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn); } -static void fdt_add_timer_nodes(const VirtBoardInfo *vbi) +static void fdt_add_timer_nodes(const VirtBoardInfo *vbi, int gictype) { /* Note that on A15 h/w these interrupts are level-triggered, * but for the GIC implementation provided by both QEMU and KVM @@ -264,8 +270,11 @@ static void fdt_add_timer_nodes(const VirtBoardInfo *vbi) ARMCPU *armcpu; uint32_t irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI; - irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, - GIC_FDT_IRQ_PPI_CPU_WIDTH, (1 << vbi->smp_cpus) - 1); + if (gictype == 2) { + irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, + GIC_FDT_IRQ_PPI_CPU_WIDTH, + (1 << vbi->smp_cpus) - 1); + } qemu_fdt_add_subnode(vbi->fdt, "/timer"); @@ -355,25 +364,36 @@ static void fdt_add_v2m_gic_node(VirtBoardInfo *vbi) qemu_fdt_setprop_cell(vbi->fdt, "/intc/v2m", "phandle", vbi->v2m_phandle); } -static void fdt_add_gic_node(VirtBoardInfo *vbi) +static void fdt_add_gic_node(VirtBoardInfo *vbi, int type) { vbi->gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt); qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", vbi->gic_phandle); qemu_fdt_add_subnode(vbi->fdt, "/intc"); - /* 'cortex-a15-gic' means 'GIC v2' */ - qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", - "arm,cortex-a15-gic"); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#interrupt-cells", 3); qemu_fdt_setprop(vbi->fdt, "/intc", "interrupt-controller", NULL, 0); - qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", - 2, vbi->memmap[VIRT_GIC_DIST].base, - 2, vbi->memmap[VIRT_GIC_DIST].size, - 2, vbi->memmap[VIRT_GIC_CPU].base, - 2, vbi->memmap[VIRT_GIC_CPU].size); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#address-cells", 0x2); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#size-cells", 0x2); qemu_fdt_setprop(vbi->fdt, "/intc", "ranges", NULL, 0); + if (type == 3) { + qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", + "arm,gic-v3"); + qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", + 2, vbi->memmap[VIRT_GIC_DIST].base, + 2, vbi->memmap[VIRT_GIC_DIST].size, + 2, vbi->memmap[VIRT_GIC_REDIST].base, + 2, vbi->memmap[VIRT_GIC_REDIST].size); + } else { + /* 'cortex-a15-gic' means 'GIC v2' */ + qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", + "arm,cortex-a15-gic"); + qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", + 2, vbi->memmap[VIRT_GIC_DIST].base, + 2, vbi->memmap[VIRT_GIC_DIST].size, + 2, vbi->memmap[VIRT_GIC_CPU].base, + 2, vbi->memmap[VIRT_GIC_CPU].size); + } + qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle); } @@ -396,18 +416,18 @@ static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic) fdt_add_v2m_gic_node(vbi); } -static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, bool secure) +static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, int type, bool secure) { - /* We create a standalone GIC v2 */ + /* We create a standalone GIC */ DeviceState *gicdev; SysBusDevice *gicbusdev; const char *gictype; int i; - gictype = gic_class_name(); + gictype = (type == 3) ? gicv3_class_name() : gic_class_name(); gicdev = qdev_create(NULL, gictype); - qdev_prop_set_uint32(gicdev, "revision", 2); + qdev_prop_set_uint32(gicdev, "revision", type); qdev_prop_set_uint32(gicdev, "num-cpu", smp_cpus); /* Note that the num-irq property counts both internal and external * interrupts; there are always 32 of the former (mandated by GIC spec). @@ -419,7 +439,11 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, bool secure) qdev_init_nofail(gicdev); gicbusdev = SYS_BUS_DEVICE(gicdev); sysbus_mmio_map(gicbusdev, 0, vbi->memmap[VIRT_GIC_DIST].base); - sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_CPU].base); + if (type == 3) { + sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_REDIST].base); + } else { + sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_CPU].base); + } /* Wire the outputs from each CPU's generic timer to the * appropriate GIC PPI inputs, and the GIC's IRQ output to @@ -454,9 +478,11 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, bool secure) pic[i] = qdev_get_gpio_in(gicdev, i); } - fdt_add_gic_node(vbi); + fdt_add_gic_node(vbi, type); - create_v2m(vbi, pic); + if (type == 2) { + create_v2m(vbi, pic); + } } static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic) @@ -773,7 +799,10 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic, qemu_fdt_setprop_cells(vbi->fdt, nodename, "bus-range", 0, nr_pcie_buses - 1); - qemu_fdt_setprop_cells(vbi->fdt, nodename, "msi-parent", vbi->v2m_phandle); + if (vbi->v2m_phandle) { + qemu_fdt_setprop_cells(vbi->fdt, nodename, "msi-parent", + vbi->v2m_phandle); + } qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg", 2, base_ecam, 2, size_ecam); @@ -888,6 +917,7 @@ static void machvirt_init(MachineState *machine) VirtMachineState *vms = VIRT_MACHINE(machine); qemu_irq pic[NUM_IRQS]; MemoryRegion *sysmem = get_system_memory(); + int gic_version = vms->gic_version; int n; MemoryRegion *ram = g_new(MemoryRegion, 1); const char *cpu_model = machine->cpu_model; @@ -900,6 +930,18 @@ static void machvirt_init(MachineState *machine) cpu_model = "cortex-a15"; } + /* We can probe only here because during property set + * KVM is not available yet + */ + if (!gic_version) { + gic_version = kvm_arm_vgic_probe(); + if (!gic_version) { + error_report("Unable to determine GIC version supported by host\n" + "Probably KVM acceleration is not supported\n"); + exit(1); + } + } + /* Separate the actual CPU model name from any appended features */ cpustr = g_strsplit(cpu_model, ",", 2); @@ -960,7 +1002,7 @@ static void machvirt_init(MachineState *machine) object_property_set_bool(cpuobj, true, "realized", NULL); } g_strfreev(cpustr); - fdt_add_timer_nodes(vbi); + fdt_add_timer_nodes(vbi, gic_version); fdt_add_cpu_nodes(vbi); fdt_add_psci_node(vbi); @@ -970,7 +1012,7 @@ static void machvirt_init(MachineState *machine) create_flash(vbi); - create_gic(vbi, pic, vms->secure); + create_gic(vbi, pic, gic_version, vms->secure); create_uart(vbi, pic); @@ -992,6 +1034,7 @@ static void machvirt_init(MachineState *machine) guest_info->memmap = vbi->memmap; guest_info->irqmap = vbi->irqmap; guest_info->use_highmem = vms->highmem; + guest_info->gic_version = gic_version; guest_info_state->machine_done.notify = virt_guest_info_machine_done; qemu_add_machine_init_done_notifier(&guest_info_state->machine_done); @@ -1043,6 +1086,31 @@ static void virt_set_highmem(Object *obj, bool value, Error **errp) vms->highmem = value; } +static char *virt_get_gic_version(Object *obj, Error **errp) +{ + VirtMachineState *vms = VIRT_MACHINE(obj); + const char *val = vms->gic_version == 3 ? "3" : "2"; + + return g_strdup(val); +} + +static void virt_set_gic_version(Object *obj, const char *value, Error **errp) +{ + VirtMachineState *vms = VIRT_MACHINE(obj); + + if (!strcmp(value, "3")) { + vms->gic_version = 3; + } else if (!strcmp(value, "2")) { + vms->gic_version = 2; + } else if (!strcmp(value, "host")) { + vms->gic_version = 0; /* Will probe later */ + } else { + error_report("Invalid gic-version option value\n" + "Allowed values are: 3, 2, host\n"); + exit(1); + } +} + static void virt_instance_init(Object *obj) { VirtMachineState *vms = VIRT_MACHINE(obj); @@ -1067,6 +1135,13 @@ static void virt_instance_init(Object *obj) "Set on/off to enable/disable using " "physical address space above 32 bits", NULL); + /* Default GIC type is v2 */ + vms->gic_version = 2; + object_property_add_str(obj, "gic-version", virt_get_gic_version, + virt_set_gic_version, NULL); + object_property_set_description(obj, "gic-version", + "Set GIC version. " + "Valid values are 2, 3 and host", NULL); } static void virt_class_init(ObjectClass *oc, void *data) @@ -1075,7 +1150,10 @@ static void virt_class_init(ObjectClass *oc, void *data) mc->desc = "ARM Virtual Machine", mc->init = machvirt_init; - mc->max_cpus = 8; + /* Our maximum number of CPUs depends on how many redistributors + * we can fit into memory map + */ + mc->max_cpus = a15memmap[VIRT_GIC_REDIST].size / 0x20000; mc->has_dynamic_sysbus = true; mc->block_default_type = IF_VIRTIO; mc->no_cdrom = 1; diff --git a/hw/intc/Makefile.objs b/hw/intc/Makefile.objs index 092d8a80ac..004b0c25e4 100644 --- a/hw/intc/Makefile.objs +++ b/hw/intc/Makefile.objs @@ -12,10 +12,12 @@ common-obj-$(CONFIG_IOAPIC) += ioapic_common.o common-obj-$(CONFIG_ARM_GIC) += arm_gic_common.o common-obj-$(CONFIG_ARM_GIC) += arm_gic.o common-obj-$(CONFIG_ARM_GIC) += arm_gicv2m.o +common-obj-$(CONFIG_ARM_GIC) += arm_gicv3_common.o common-obj-$(CONFIG_OPENPIC) += openpic.o obj-$(CONFIG_APIC) += apic.o apic_common.o obj-$(CONFIG_ARM_GIC_KVM) += arm_gic_kvm.o +obj-$(call land,$(CONFIG_ARM_GIC_KVM),$(TARGET_AARCH64)) += arm_gicv3_kvm.o obj-$(CONFIG_STELLARIS) += armv7m_nvic.o obj-$(CONFIG_EXYNOS4) += exynos4210_gic.o exynos4210_combiner.o obj-$(CONFIG_GRLIB) += grlib_irqmp.o diff --git a/hw/intc/arm_gic_kvm.c b/hw/intc/arm_gic_kvm.c index e5d0f67186..e8b2386908 100644 --- a/hw/intc/arm_gic_kvm.c +++ b/hw/intc/arm_gic_kvm.c @@ -23,6 +23,7 @@ #include "sysemu/kvm.h" #include "kvm_arm.h" #include "gic_internal.h" +#include "vgic_common.h" //#define DEBUG_GIC_KVM @@ -52,7 +53,7 @@ typedef struct KVMARMGICClass { void (*parent_reset)(DeviceState *dev); } KVMARMGICClass; -static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) +void kvm_arm_gic_set_irq(uint32_t num_irq, int irq, int level) { /* Meaning of the 'irq' parameter: * [0..N-1] : external interrupts @@ -63,10 +64,9 @@ static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) * has separate fields in the irq number for type, * CPU number and interrupt number. */ - GICState *s = (GICState *)opaque; int kvm_irq, irqtype, cpu; - if (irq < (s->num_irq - GIC_INTERNAL)) { + if (irq < (num_irq - GIC_INTERNAL)) { /* External interrupt. The kernel numbers these like the GIC * hardware, with external interrupt IDs starting after the * internal ones. @@ -77,7 +77,7 @@ static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) } else { /* Internal interrupt: decode into (cpu, interrupt id) */ irqtype = KVM_ARM_IRQ_TYPE_PPI; - irq -= (s->num_irq - GIC_INTERNAL); + irq -= (num_irq - GIC_INTERNAL); cpu = irq / GIC_INTERNAL; irq %= GIC_INTERNAL; } @@ -87,69 +87,36 @@ static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) kvm_set_irq(kvm_state, kvm_irq, !!level); } -static bool kvm_arm_gic_can_save_restore(GICState *s) -{ - return s->dev_fd >= 0; -} - -static bool kvm_gic_supports_attr(GICState *s, int group, int attrnum) +static void kvm_arm_gicv2_set_irq(void *opaque, int irq, int level) { - struct kvm_device_attr attr = { - .group = group, - .attr = attrnum, - .flags = 0, - }; - - if (s->dev_fd == -1) { - return false; - } + GICState *s = (GICState *)opaque; - return kvm_device_ioctl(s->dev_fd, KVM_HAS_DEVICE_ATTR, &attr) == 0; + kvm_arm_gic_set_irq(s->num_irq, irq, level); } -static void kvm_gic_access(GICState *s, int group, int offset, - int cpu, uint32_t *val, bool write) +static bool kvm_arm_gic_can_save_restore(GICState *s) { - struct kvm_device_attr attr; - int type; - int err; - - cpu = cpu & 0xff; - - attr.flags = 0; - attr.group = group; - attr.attr = (((uint64_t)cpu << KVM_DEV_ARM_VGIC_CPUID_SHIFT) & - KVM_DEV_ARM_VGIC_CPUID_MASK) | - (((uint64_t)offset << KVM_DEV_ARM_VGIC_OFFSET_SHIFT) & - KVM_DEV_ARM_VGIC_OFFSET_MASK); - attr.addr = (uintptr_t)val; - - if (write) { - type = KVM_SET_DEVICE_ATTR; - } else { - type = KVM_GET_DEVICE_ATTR; - } - - err = kvm_device_ioctl(s->dev_fd, type, &attr); - if (err < 0) { - fprintf(stderr, "KVM_{SET/GET}_DEVICE_ATTR failed: %s\n", - strerror(-err)); - abort(); - } + return s->dev_fd >= 0; } +#define KVM_VGIC_ATTR(offset, cpu) \ + ((((uint64_t)(cpu) << KVM_DEV_ARM_VGIC_CPUID_SHIFT) & \ + KVM_DEV_ARM_VGIC_CPUID_MASK) | \ + (((uint64_t)(offset) << KVM_DEV_ARM_VGIC_OFFSET_SHIFT) & \ + KVM_DEV_ARM_VGIC_OFFSET_MASK)) + static void kvm_gicd_access(GICState *s, int offset, int cpu, uint32_t *val, bool write) { - kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_DIST_REGS, - offset, cpu, val, write); + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_DIST_REGS, + KVM_VGIC_ATTR(offset, cpu), val, write); } static void kvm_gicc_access(GICState *s, int offset, int cpu, uint32_t *val, bool write) { - kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_CPU_REGS, - offset, cpu, val, write); + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CPU_REGS, + KVM_VGIC_ATTR(offset, cpu), val, write); } #define for_each_irq_reg(_ctr, _max_irq, _field_width) \ @@ -559,7 +526,7 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) return; } - gic_init_irqs_and_mmio(s, kvm_arm_gic_set_irq, NULL); + gic_init_irqs_and_mmio(s, kvm_arm_gicv2_set_irq, NULL); for (i = 0; i < s->num_irq - GIC_INTERNAL; i++) { qemu_irq irq = qdev_get_gpio_in(dev, i); @@ -571,23 +538,24 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V2, false); if (ret >= 0) { s->dev_fd = ret; + + /* Newstyle API is used, we may have attributes */ + if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0)) { + uint32_t numirqs = s->num_irq; + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0, + &numirqs, true); + } + /* Tell the kernel to complete VGIC initialization now */ + if (kvm_device_check_attr(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT)) { + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + } } else if (ret != -ENODEV && ret != -ENOTSUP) { error_setg_errno(errp, -ret, "error creating in-kernel VGIC"); return; } - if (kvm_gic_supports_attr(s, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0)) { - uint32_t numirqs = s->num_irq; - kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0, 0, &numirqs, 1); - } - - /* Tell the kernel to complete VGIC initialization now */ - if (kvm_gic_supports_attr(s, KVM_DEV_ARM_VGIC_GRP_CTRL, - KVM_DEV_ARM_VGIC_CTRL_INIT)) { - kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_CTRL, - KVM_DEV_ARM_VGIC_CTRL_INIT, 0, 0, 1); - } - /* Distributor */ kvm_arm_register_device(&s->iomem, (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT) diff --git a/hw/intc/arm_gicv3_common.c b/hw/intc/arm_gicv3_common.c new file mode 100644 index 0000000000..032ece2166 --- /dev/null +++ b/hw/intc/arm_gicv3_common.c @@ -0,0 +1,140 @@ +/* + * ARM GICv3 support - common bits of emulated and KVM kernel model + * + * Copyright (c) 2012 Linaro Limited + * Copyright (c) 2015 Huawei. + * Written by Peter Maydell + * Extended to 64 cores by Shlomo Pongratz + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "hw/intc/arm_gicv3_common.h" + +static void gicv3_pre_save(void *opaque) +{ + GICv3State *s = (GICv3State *)opaque; + ARMGICv3CommonClass *c = ARM_GICV3_COMMON_GET_CLASS(s); + + if (c->pre_save) { + c->pre_save(s); + } +} + +static int gicv3_post_load(void *opaque, int version_id) +{ + GICv3State *s = (GICv3State *)opaque; + ARMGICv3CommonClass *c = ARM_GICV3_COMMON_GET_CLASS(s); + + if (c->post_load) { + c->post_load(s); + } + return 0; +} + +static const VMStateDescription vmstate_gicv3 = { + .name = "arm_gicv3", + .unmigratable = 1, + .pre_save = gicv3_pre_save, + .post_load = gicv3_post_load, +}; + +void gicv3_init_irqs_and_mmio(GICv3State *s, qemu_irq_handler handler, + const MemoryRegionOps *ops) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(s); + int i; + + /* For the GIC, also expose incoming GPIO lines for PPIs for each CPU. + * GPIO array layout is thus: + * [0..N-1] spi + * [N..N+31] PPIs for CPU 0 + * [N+32..N+63] PPIs for CPU 1 + * ... + */ + i = s->num_irq - GIC_INTERNAL + GIC_INTERNAL * s->num_cpu; + qdev_init_gpio_in(DEVICE(s), handler, i); + + s->parent_irq = g_malloc(s->num_cpu * sizeof(qemu_irq)); + s->parent_fiq = g_malloc(s->num_cpu * sizeof(qemu_irq)); + + for (i = 0; i < s->num_cpu; i++) { + sysbus_init_irq(sbd, &s->parent_irq[i]); + } + for (i = 0; i < s->num_cpu; i++) { + sysbus_init_irq(sbd, &s->parent_fiq[i]); + } + + memory_region_init_io(&s->iomem_dist, OBJECT(s), ops, s, + "gicv3_dist", 0x10000); + memory_region_init_io(&s->iomem_redist, OBJECT(s), ops ? &ops[1] : NULL, s, + "gicv3_redist", 0x20000 * s->num_cpu); + + sysbus_init_mmio(sbd, &s->iomem_dist); + sysbus_init_mmio(sbd, &s->iomem_redist); +} + +static void arm_gicv3_common_realize(DeviceState *dev, Error **errp) +{ + GICv3State *s = ARM_GICV3_COMMON(dev); + + /* revision property is actually reserved and currently used only in order + * to keep the interface compatible with GICv2 code, avoiding extra + * conditions. However, in future it could be used, for example, if we + * implement GICv4. + */ + if (s->revision != 3) { + error_setg(errp, "unsupported GIC revision %d", s->revision); + return; + } +} + +static void arm_gicv3_common_reset(DeviceState *dev) +{ + /* TODO */ +} + +static Property arm_gicv3_common_properties[] = { + DEFINE_PROP_UINT32("num-cpu", GICv3State, num_cpu, 1), + DEFINE_PROP_UINT32("num-irq", GICv3State, num_irq, 32), + DEFINE_PROP_UINT32("revision", GICv3State, revision, 3), + DEFINE_PROP_BOOL("has-security-extensions", GICv3State, security_extn, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void arm_gicv3_common_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->reset = arm_gicv3_common_reset; + dc->realize = arm_gicv3_common_realize; + dc->props = arm_gicv3_common_properties; + dc->vmsd = &vmstate_gicv3; +} + +static const TypeInfo arm_gicv3_common_type = { + .name = TYPE_ARM_GICV3_COMMON, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(GICv3State), + .class_size = sizeof(ARMGICv3CommonClass), + .class_init = arm_gicv3_common_class_init, + .abstract = true, +}; + +static void register_types(void) +{ + type_register_static(&arm_gicv3_common_type); +} + +type_init(register_types) diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c new file mode 100644 index 0000000000..b48f78f13d --- /dev/null +++ b/hw/intc/arm_gicv3_kvm.c @@ -0,0 +1,149 @@ +/* + * ARM Generic Interrupt Controller using KVM in-kernel support + * + * Copyright (c) 2015 Samsung Electronics Co., Ltd. + * Written by Pavel Fedin + * Based on vGICv2 code by Peter Maydell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "hw/intc/arm_gicv3_common.h" +#include "hw/sysbus.h" +#include "sysemu/kvm.h" +#include "kvm_arm.h" +#include "vgic_common.h" + +#ifdef DEBUG_GICV3_KVM +#define DPRINTF(fmt, ...) \ + do { fprintf(stderr, "kvm_gicv3: " fmt, ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) \ + do { } while (0) +#endif + +#define TYPE_KVM_ARM_GICV3 "kvm-arm-gicv3" +#define KVM_ARM_GICV3(obj) \ + OBJECT_CHECK(GICv3State, (obj), TYPE_KVM_ARM_GICV3) +#define KVM_ARM_GICV3_CLASS(klass) \ + OBJECT_CLASS_CHECK(KVMARMGICv3Class, (klass), TYPE_KVM_ARM_GICV3) +#define KVM_ARM_GICV3_GET_CLASS(obj) \ + OBJECT_GET_CLASS(KVMARMGICv3Class, (obj), TYPE_KVM_ARM_GICV3) + +typedef struct KVMARMGICv3Class { + ARMGICv3CommonClass parent_class; + DeviceRealize parent_realize; + void (*parent_reset)(DeviceState *dev); +} KVMARMGICv3Class; + +static void kvm_arm_gicv3_set_irq(void *opaque, int irq, int level) +{ + GICv3State *s = (GICv3State *)opaque; + + kvm_arm_gic_set_irq(s->num_irq, irq, level); +} + +static void kvm_arm_gicv3_put(GICv3State *s) +{ + /* TODO */ + DPRINTF("Cannot put kernel gic state, no kernel interface\n"); +} + +static void kvm_arm_gicv3_get(GICv3State *s) +{ + /* TODO */ + DPRINTF("Cannot get kernel gic state, no kernel interface\n"); +} + +static void kvm_arm_gicv3_reset(DeviceState *dev) +{ + GICv3State *s = ARM_GICV3_COMMON(dev); + KVMARMGICv3Class *kgc = KVM_ARM_GICV3_GET_CLASS(s); + + DPRINTF("Reset\n"); + + kgc->parent_reset(dev); + kvm_arm_gicv3_put(s); +} + +static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp) +{ + GICv3State *s = KVM_ARM_GICV3(dev); + KVMARMGICv3Class *kgc = KVM_ARM_GICV3_GET_CLASS(s); + Error *local_err = NULL; + + DPRINTF("kvm_arm_gicv3_realize\n"); + + kgc->parent_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + if (s->security_extn) { + error_setg(errp, "the in-kernel VGICv3 does not implement the " + "security extensions"); + return; + } + + gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL); + + /* Try to create the device via the device control API */ + s->dev_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V3, false); + if (s->dev_fd < 0) { + error_setg_errno(errp, -s->dev_fd, "error creating in-kernel VGIC"); + return; + } + + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, + 0, &s->num_irq, true); + + /* Tell the kernel to complete VGIC initialization now */ + kvm_device_access(s->dev_fd, KVM_DEV_ARM_VGIC_GRP_CTRL, + KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true); + + kvm_arm_register_device(&s->iomem_dist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_DIST, s->dev_fd); + kvm_arm_register_device(&s->iomem_redist, -1, KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V3_ADDR_TYPE_REDIST, s->dev_fd); +} + +static void kvm_arm_gicv3_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ARMGICv3CommonClass *agcc = ARM_GICV3_COMMON_CLASS(klass); + KVMARMGICv3Class *kgc = KVM_ARM_GICV3_CLASS(klass); + + agcc->pre_save = kvm_arm_gicv3_get; + agcc->post_load = kvm_arm_gicv3_put; + kgc->parent_realize = dc->realize; + kgc->parent_reset = dc->reset; + dc->realize = kvm_arm_gicv3_realize; + dc->reset = kvm_arm_gicv3_reset; +} + +static const TypeInfo kvm_arm_gicv3_info = { + .name = TYPE_KVM_ARM_GICV3, + .parent = TYPE_ARM_GICV3_COMMON, + .instance_size = sizeof(GICv3State), + .class_init = kvm_arm_gicv3_class_init, + .class_size = sizeof(KVMARMGICv3Class), +}; + +static void kvm_arm_gicv3_register_types(void) +{ + type_register_static(&kvm_arm_gicv3_info); +} + +type_init(kvm_arm_gicv3_register_types) diff --git a/hw/intc/vgic_common.h b/hw/intc/vgic_common.h new file mode 100644 index 0000000000..80d919eb93 --- /dev/null +++ b/hw/intc/vgic_common.h @@ -0,0 +1,35 @@ +/* + * ARM KVM vGIC utility functions + * + * Copyright (c) 2015 Samsung Electronics + * Written by Pavel Fedin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef QEMU_ARM_VGIC_COMMON_H +#define QEMU_ARM_VGIC_COMMON_H + +/** + * kvm_arm_gic_set_irq - Send an IRQ to the in-kernel vGIC + * @num_irq: Total number of IRQs configured for the GIC instance + * @irq: qemu internal IRQ line number: + * [0..N-1] : external interrupts + * [N..N+31] : PPI (internal) interrupts for CPU 0 + * [N+32..N+63] : PPI (internal interrupts for CPU 1 + * @level: level of the IRQ line. + */ +void kvm_arm_gic_set_irq(uint32_t num_irq, int irq, int level); + +#endif diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index 2b431e6242..c7a03d43b9 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -384,6 +384,15 @@ struct AcpiMadtGenericMsiFrame { typedef struct AcpiMadtGenericMsiFrame AcpiMadtGenericMsiFrame; +struct AcpiMadtGenericRedistributor { + ACPI_SUB_HEADER_DEF + uint16_t reserved; + uint64_t base_address; + uint32_t range_length; +} QEMU_PACKED; + +typedef struct AcpiMadtGenericRedistributor AcpiMadtGenericRedistributor; + /* * Generic Timer Description Table (GTDT) */ diff --git a/include/hw/arm/virt-acpi-build.h b/include/hw/arm/virt-acpi-build.h index 19b68a404e..744b666385 100644 --- a/include/hw/arm/virt-acpi-build.h +++ b/include/hw/arm/virt-acpi-build.h @@ -32,6 +32,7 @@ typedef struct VirtGuestInfo { const MemMapEntry *memmap; const int *irqmap; bool use_highmem; + int gic_version; } VirtGuestInfo; diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 808753f08e..f464586304 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -46,6 +46,9 @@ enum { VIRT_CPUPERIPHS, VIRT_GIC_DIST, VIRT_GIC_CPU, + VIRT_GIC_V2M, + VIRT_GIC_ITS, + VIRT_GIC_REDIST, VIRT_UART, VIRT_MMIO, VIRT_RTC, @@ -54,7 +57,6 @@ enum { VIRT_PCIE_MMIO, VIRT_PCIE_PIO, VIRT_PCIE_ECAM, - VIRT_GIC_V2M, VIRT_PLATFORM_BUS, VIRT_PCIE_MMIO_HIGH, }; diff --git a/include/hw/intc/arm_gicv3_common.h b/include/hw/intc/arm_gicv3_common.h new file mode 100644 index 0000000000..c2fd8da4ef --- /dev/null +++ b/include/hw/intc/arm_gicv3_common.h @@ -0,0 +1,68 @@ +/* + * ARM GIC support + * + * Copyright (c) 2012 Linaro Limited + * Copyright (c) 2015 Huawei. + * Written by Peter Maydell + * Extended to 64 cores by Shlomo Pongratz + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef HW_ARM_GICV3_COMMON_H +#define HW_ARM_GICV3_COMMON_H + +#include "hw/sysbus.h" +#include "hw/intc/arm_gic_common.h" + +typedef struct GICv3State { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + qemu_irq *parent_irq; + qemu_irq *parent_fiq; + + MemoryRegion iomem_dist; /* Distributor */ + MemoryRegion iomem_redist; /* Redistributors */ + + uint32_t num_cpu; + uint32_t num_irq; + uint32_t revision; + bool security_extn; + + int dev_fd; /* kvm device fd if backed by kvm vgic support */ +} GICv3State; + +#define TYPE_ARM_GICV3_COMMON "arm-gicv3-common" +#define ARM_GICV3_COMMON(obj) \ + OBJECT_CHECK(GICv3State, (obj), TYPE_ARM_GICV3_COMMON) +#define ARM_GICV3_COMMON_CLASS(klass) \ + OBJECT_CLASS_CHECK(ARMGICv3CommonClass, (klass), TYPE_ARM_GICV3_COMMON) +#define ARM_GICV3_COMMON_GET_CLASS(obj) \ + OBJECT_GET_CLASS(ARMGICv3CommonClass, (obj), TYPE_ARM_GICV3_COMMON) + +typedef struct ARMGICv3CommonClass { + /*< private >*/ + SysBusDeviceClass parent_class; + /*< public >*/ + + void (*pre_save)(GICv3State *s); + void (*post_load)(GICv3State *s); +} ARMGICv3CommonClass; + +void gicv3_init_irqs_and_mmio(GICv3State *s, qemu_irq_handler handler, + const MemoryRegionOps *ops); + +#endif diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 983e99e1e7..2a58b4d19e 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -240,6 +240,32 @@ int kvm_device_ioctl(int fd, int type, ...); int kvm_vm_check_attr(KVMState *s, uint32_t group, uint64_t attr); /** + * kvm_device_check_attr - check for existence of a specific device attribute + * @fd: The device file descriptor + * @group: the group + * @attr: the attribute of that group to query for + * + * Returns: 1 if the attribute exists + * 0 if the attribute either does not exist or if the vm device + * interface is unavailable + */ +int kvm_device_check_attr(int fd, uint32_t group, uint64_t attr); + +/** + * kvm_device_access - set or get value of a specific vm attribute + * @fd: The device file descriptor + * @group: the group + * @attr: the attribute of that group to set or get + * @val: pointer to a storage area for the value + * @write: true for set and false for get operation + * + * This function is not allowed to fail. Use kvm_device_check_attr() + * in order to check for the availability of optional attributes. + */ +void kvm_device_access(int fd, int group, uint64_t attr, + void *val, bool write); + +/** * kvm_create_device - create a KVM device for the device control API * @KVMState: The KVMState pointer * @type: The KVM device type (see Documentation/virtual/kvm/devices in the @@ -24,6 +24,7 @@ #include "qemu/atomic.h" #include "qemu/option.h" #include "qemu/config-file.h" +#include "qemu/error-report.h" #include "hw/hw.h" #include "hw/pci/msi.h" #include "hw/s390x/adapter.h" @@ -2008,6 +2009,39 @@ int kvm_vm_check_attr(KVMState *s, uint32_t group, uint64_t attr) return ret ? 0 : 1; } +int kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr) +{ + struct kvm_device_attr attribute = { + .group = group, + .attr = attr, + .flags = 0, + }; + + return kvm_device_ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute) ? 0 : 1; +} + +void kvm_device_access(int fd, int group, uint64_t attr, + void *val, bool write) +{ + struct kvm_device_attr kvmattr; + int err; + + kvmattr.flags = 0; + kvmattr.group = group; + kvmattr.attr = attr; + kvmattr.addr = (uintptr_t)val; + + err = kvm_device_ioctl(fd, + write ? KVM_SET_DEVICE_ATTR : KVM_GET_DEVICE_ATTR, + &kvmattr); + if (err < 0) { + error_report("KVM_%s_DEVICE_ATTR failed: %s\n" + "Group %d attr 0x%016" PRIx64, write ? "SET" : "GET", + strerror(-err), group, attr); + abort(); + } +} + int kvm_has_sync_mmu(void) { return kvm_check_extension(kvm_state, KVM_CAP_SYNC_MMU); diff --git a/target-arm/kvm.c b/target-arm/kvm.c index b278542085..6aadcd88f7 100644 --- a/target-arm/kvm.c +++ b/target-arm/kvm.c @@ -585,18 +585,23 @@ void kvm_arch_init_irq_routing(KVMState *s) int kvm_arch_irqchip_create(KVMState *s) { - int ret; - /* If we can create the VGIC using the newer device control API, we * let the device do this when it initializes itself, otherwise we * fall back to the old API */ + return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL); +} - ret = kvm_create_device(s, KVM_DEV_TYPE_ARM_VGIC_V2, true); - if (ret == 0) { - return 1; +int kvm_arm_vgic_probe(void) +{ + if (kvm_create_device(kvm_state, + KVM_DEV_TYPE_ARM_VGIC_V3, true) == 0) { + return 3; + } else if (kvm_create_device(kvm_state, + KVM_DEV_TYPE_ARM_VGIC_V2, true) == 0) { + return 2; + } else { + return 0; } - - return 0; } int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, diff --git a/target-arm/kvm_arm.h b/target-arm/kvm_arm.h index b3e0ab7e7c..b516041779 100644 --- a/target-arm/kvm_arm.h +++ b/target-arm/kvm_arm.h @@ -189,6 +189,15 @@ int kvm_arm_sync_mpstate_to_kvm(ARMCPU *cpu); */ int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu); +int kvm_arm_vgic_probe(void); + +#else + +static inline int kvm_arm_vgic_probe(void) +{ + return 0; +} + #endif static inline const char *gic_class_name(void) @@ -196,4 +205,14 @@ static inline const char *gic_class_name(void) return kvm_irqchip_in_kernel() ? "kvm-arm-gic" : "arm_gic"; } +/** + * gicv3_class_name + * + * Return name of GICv3 class to use depending on whether KVM acceleration is + * in use. May throw an error if the chosen implementation is not available. + * + * Returns: class name to use + */ +const char *gicv3_class_name(void); + #endif diff --git a/target-arm/machine.c b/target-arm/machine.c index 32adfe792e..36a0d159cc 100644 --- a/target-arm/machine.c +++ b/target-arm/machine.c @@ -1,5 +1,6 @@ #include "hw/hw.h" #include "hw/boards.h" +#include "qemu/error-report.h" #include "sysemu/kvm.h" #include "kvm_arm.h" #include "internals.h" @@ -328,3 +329,20 @@ const VMStateDescription vmstate_arm_cpu = { NULL } }; + +const char *gicv3_class_name(void) +{ + if (kvm_irqchip_in_kernel()) { +#ifdef TARGET_AARCH64 + return "kvm-arm-gicv3"; +#else + error_report("KVM GICv3 acceleration is not supported on this " + "platform\n"); +#endif + } else { + /* TODO: Software emulation is not implemented yet */ + error_report("KVM is currently required for GICv3 emulation\n"); + } + + exit(1); +} |