From e24e3454829579eb815ec95d7b3679b0f65845b4 Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Fri, 4 May 2018 18:05:52 +0100 Subject: [PATCH] hw/arm/virt: Introduce the iommu option ARM virt machine now exposes a new "iommu" option. The SMMUv3 IOMMU is instantiated using -machine virt,iommu=smmuv3. Signed-off-by: Eric Auger Signed-off-by: Prem Mallappa Reviewed-by: Peter Maydell Message-id: 1524665762-31355-15-git-send-email-eric.auger@redhat.com Signed-off-by: Peter Maydell --- hw/arm/virt.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index b085f0b9b4..11b9f599ca 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1561,6 +1561,34 @@ static void virt_set_gic_version(Object *obj, const char *value, Error **errp) } } +static char *virt_get_iommu(Object *obj, Error **errp) +{ + VirtMachineState *vms = VIRT_MACHINE(obj); + + switch (vms->iommu) { + case VIRT_IOMMU_NONE: + return g_strdup("none"); + case VIRT_IOMMU_SMMUV3: + return g_strdup("smmuv3"); + default: + g_assert_not_reached(); + } +} + +static void virt_set_iommu(Object *obj, const char *value, Error **errp) +{ + VirtMachineState *vms = VIRT_MACHINE(obj); + + if (!strcmp(value, "smmuv3")) { + vms->iommu = VIRT_IOMMU_SMMUV3; + } else if (!strcmp(value, "none")) { + vms->iommu = VIRT_IOMMU_NONE; + } else { + error_setg(errp, "Invalid iommu value"); + error_append_hint(errp, "Valid values are none, smmuv3.\n"); + } +} + static CpuInstanceProperties virt_cpu_index_to_props(MachineState *ms, unsigned cpu_index) { @@ -1693,6 +1721,14 @@ static void virt_2_12_instance_init(Object *obj) NULL); } + /* Default disallows iommu instantiation */ + vms->iommu = VIRT_IOMMU_NONE; + object_property_add_str(obj, "iommu", virt_get_iommu, virt_set_iommu, NULL); + object_property_set_description(obj, "iommu", + "Set the IOMMU type. " + "Valid values are none and smmuv3", + NULL); + vms->memmap = a15memmap; vms->irqmap = a15irqmap; }