diff options
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 102 |
1 files changed, 75 insertions, 27 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index bb6a2484d8..5bdd98e4a1 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -522,7 +522,7 @@ static void fdt_add_gic_node(VirtMachineState *vms) qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2); qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2); qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0); - if (vms->gic_version == VIRT_GIC_VERSION_3) { + if (vms->gic_version != VIRT_GIC_VERSION_2) { int nb_redist_regions = virt_gicv3_redist_region_count(vms); qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", @@ -690,14 +690,32 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) /* We create a standalone GIC */ SysBusDevice *gicbusdev; const char *gictype; - int type = vms->gic_version, i; + int i; unsigned int smp_cpus = ms->smp.cpus; uint32_t nb_redist_regions = 0; + int revision; - gictype = (type == 3) ? gicv3_class_name() : gic_class_name(); + if (vms->gic_version == VIRT_GIC_VERSION_2) { + gictype = gic_class_name(); + } else { + gictype = gicv3_class_name(); + } + switch (vms->gic_version) { + case VIRT_GIC_VERSION_2: + revision = 2; + break; + case VIRT_GIC_VERSION_3: + revision = 3; + break; + case VIRT_GIC_VERSION_4: + revision = 4; + break; + default: + g_assert_not_reached(); + } vms->gic = qdev_new(gictype); - qdev_prop_set_uint32(vms->gic, "revision", type); + qdev_prop_set_uint32(vms->gic, "revision", revision); qdev_prop_set_uint32(vms->gic, "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). @@ -707,9 +725,8 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) qdev_prop_set_bit(vms->gic, "has-security-extensions", vms->secure); } - if (type == 3) { - uint32_t redist0_capacity = - vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE; + if (vms->gic_version != VIRT_GIC_VERSION_2) { + uint32_t redist0_capacity = virt_redist_capacity(vms, VIRT_GIC_REDIST); uint32_t redist0_count = MIN(smp_cpus, redist0_capacity); nb_redist_regions = virt_gicv3_redist_region_count(vms); @@ -728,7 +745,7 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) if (nb_redist_regions == 2) { uint32_t redist1_capacity = - vms->memmap[VIRT_HIGH_GIC_REDIST2].size / GICV3_REDIST_SIZE; + virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2); qdev_prop_set_uint32(vms->gic, "redist-region-count[1]", MIN(smp_cpus - redist0_count, redist1_capacity)); @@ -742,7 +759,7 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) gicbusdev = SYS_BUS_DEVICE(vms->gic); sysbus_realize_and_unref(gicbusdev, &error_fatal); sysbus_mmio_map(gicbusdev, 0, vms->memmap[VIRT_GIC_DIST].base); - if (type == 3) { + if (vms->gic_version != VIRT_GIC_VERSION_2) { sysbus_mmio_map(gicbusdev, 1, vms->memmap[VIRT_GIC_REDIST].base); if (nb_redist_regions == 2) { sysbus_mmio_map(gicbusdev, 2, @@ -780,7 +797,7 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) ppibase + timer_irq[irq])); } - if (type == 3) { + if (vms->gic_version != VIRT_GIC_VERSION_2) { qemu_irq irq = qdev_get_gpio_in(vms->gic, ppibase + ARCH_GIC_MAINT_IRQ); qdev_connect_gpio_out_named(cpudev, "gicv3-maintenance-interrupt", @@ -806,9 +823,9 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) fdt_add_gic_node(vms); - if (type == 3 && vms->its) { + if (vms->gic_version != VIRT_GIC_VERSION_2 && vms->its) { create_its(vms); - } else if (type == 2) { + } else if (vms->gic_version == VIRT_GIC_VERSION_2) { create_v2m(vms); } } @@ -1658,10 +1675,10 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState *vms, int idx) * purposes are to make TCG consistent (with 64-bit KVM hosts) * and to improve SGI efficiency. */ - if (vms->gic_version == VIRT_GIC_VERSION_3) { - clustersz = GICV3_TARGETLIST_BITS; - } else { + if (vms->gic_version == VIRT_GIC_VERSION_2) { clustersz = GIC_TARGETLIST_BITS; + } else { + clustersz = GICV3_TARGETLIST_BITS; } } return arm_cpu_mp_affinity(idx, clustersz); @@ -1794,6 +1811,10 @@ static void finalize_gic_version(VirtMachineState *vms) error_report( "gic-version=3 is not supported with kernel-irqchip=off"); exit(1); + case VIRT_GIC_VERSION_4: + error_report( + "gic-version=4 is not supported with kernel-irqchip=off"); + exit(1); } } @@ -1831,6 +1852,9 @@ static void finalize_gic_version(VirtMachineState *vms) case VIRT_GIC_VERSION_2: case VIRT_GIC_VERSION_3: break; + case VIRT_GIC_VERSION_4: + error_report("gic-version=4 is not supported with KVM"); + exit(1); } /* Check chosen version is effectively supported by the host */ @@ -1854,7 +1878,12 @@ static void finalize_gic_version(VirtMachineState *vms) case VIRT_GIC_VERSION_MAX: if (module_object_class_by_name("arm-gicv3")) { /* CONFIG_ARM_GICV3_TCG was set */ - vms->gic_version = VIRT_GIC_VERSION_3; + if (vms->virt) { + /* GICv4 only makes sense if CPU has EL2 */ + vms->gic_version = VIRT_GIC_VERSION_4; + } else { + vms->gic_version = VIRT_GIC_VERSION_3; + } } else { vms->gic_version = VIRT_GIC_VERSION_2; } @@ -1862,6 +1891,12 @@ static void finalize_gic_version(VirtMachineState *vms) case VIRT_GIC_VERSION_HOST: error_report("gic-version=host requires KVM"); exit(1); + case VIRT_GIC_VERSION_4: + if (!vms->virt) { + error_report("gic-version=4 requires virtualization enabled"); + exit(1); + } + break; case VIRT_GIC_VERSION_2: case VIRT_GIC_VERSION_3: break; @@ -2029,16 +2064,16 @@ static void machvirt_init(MachineState *machine) vms->psci_conduit = QEMU_PSCI_CONDUIT_HVC; } - /* The maximum number of CPUs depends on the GIC version, or on how - * many redistributors we can fit into the memory map. + /* + * The maximum number of CPUs depends on the GIC version, or on how + * many redistributors we can fit into the memory map (which in turn + * depends on whether this is a GICv3 or v4). */ - if (vms->gic_version == VIRT_GIC_VERSION_3) { - virt_max_cpus = - vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE; - virt_max_cpus += - vms->memmap[VIRT_HIGH_GIC_REDIST2].size / GICV3_REDIST_SIZE; - } else { + if (vms->gic_version == VIRT_GIC_VERSION_2) { virt_max_cpus = GIC_NCPU; + } else { + virt_max_cpus = virt_redist_capacity(vms, VIRT_GIC_REDIST) + + virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2); } if (max_cpus > virt_max_cpus) { @@ -2426,8 +2461,19 @@ static void virt_set_mte(Object *obj, bool value, Error **errp) static char *virt_get_gic_version(Object *obj, Error **errp) { VirtMachineState *vms = VIRT_MACHINE(obj); - const char *val = vms->gic_version == VIRT_GIC_VERSION_3 ? "3" : "2"; + const char *val; + switch (vms->gic_version) { + case VIRT_GIC_VERSION_4: + val = "4"; + break; + case VIRT_GIC_VERSION_3: + val = "3"; + break; + default: + val = "2"; + break; + } return g_strdup(val); } @@ -2435,7 +2481,9 @@ static void virt_set_gic_version(Object *obj, const char *value, Error **errp) { VirtMachineState *vms = VIRT_MACHINE(obj); - if (!strcmp(value, "3")) { + if (!strcmp(value, "4")) { + vms->gic_version = VIRT_GIC_VERSION_4; + } else if (!strcmp(value, "3")) { vms->gic_version = VIRT_GIC_VERSION_3; } else if (!strcmp(value, "2")) { vms->gic_version = VIRT_GIC_VERSION_2; @@ -2893,7 +2941,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) virt_set_gic_version); object_class_property_set_description(oc, "gic-version", "Set GIC version. " - "Valid values are 2, 3, host and max"); + "Valid values are 2, 3, 4, host and max"); object_class_property_add_str(oc, "iommu", virt_get_iommu, virt_set_iommu); object_class_property_set_description(oc, "iommu", |