diff options
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 111 |
1 files changed, 85 insertions, 26 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 6f01746e74..02209fadcf 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -55,6 +55,7 @@ #include "qemu/cutils.h" #include "qemu/error-report.h" #include "qemu/module.h" +#include "hw/pci/pci_bus.h" #include "hw/pci-host/gpex.h" #include "hw/pci-bridge/pci_expander_bridge.h" #include "hw/virtio/virtio-pci.h" @@ -149,6 +150,9 @@ static void arm_virt_compat_set(MachineClass *mc) #define LEGACY_RAMLIMIT_GB 255 #define LEGACY_RAMLIMIT_BYTES (LEGACY_RAMLIMIT_GB * GiB) +/* MMIO region size for SMMUv3 */ +#define SMMU_IO_LEN 0x20000 + /* Addresses and sizes of our components. * 0..128MB is space for a flash device so we can run bootrom code such as UEFI. * 128MB..256MB is used for miscellaneous device I/O. @@ -180,7 +184,7 @@ static const MemMapEntry base_memmap[] = { [VIRT_FW_CFG] = { 0x09020000, 0x00000018 }, [VIRT_GPIO] = { 0x09030000, 0x00001000 }, [VIRT_UART1] = { 0x09040000, 0x00001000 }, - [VIRT_SMMU] = { 0x09050000, 0x00020000 }, + [VIRT_SMMU] = { 0x09050000, SMMU_IO_LEN }, [VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN }, [VIRT_ACPI_GED] = { 0x09080000, ACPI_GED_EVT_SEL_LEN }, [VIRT_NVDIMM_ACPI] = { 0x09090000, NVDIMM_ACPI_IO_LEN}, @@ -1442,19 +1446,66 @@ static void create_pcie_irq_map(const MachineState *ms, 0x7 /* PCI irq */); } +static void create_smmuv3_dt_bindings(const VirtMachineState *vms, hwaddr base, + hwaddr size, int irq) +{ + char *node; + const char compat[] = "arm,smmu-v3"; + const char irq_names[] = "eventq\0priq\0cmdq-sync\0gerror"; + MachineState *ms = MACHINE(vms); + + node = g_strdup_printf("/smmuv3@%" PRIx64, base); + qemu_fdt_add_subnode(ms->fdt, node); + qemu_fdt_setprop(ms->fdt, node, "compatible", compat, sizeof(compat)); + qemu_fdt_setprop_sized_cells(ms->fdt, node, "reg", 2, base, 2, size); + + qemu_fdt_setprop_cells(ms->fdt, node, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irq , GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, + GIC_FDT_IRQ_TYPE_SPI, irq + 1, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, + GIC_FDT_IRQ_TYPE_SPI, irq + 2, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, + GIC_FDT_IRQ_TYPE_SPI, irq + 3, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI); + + qemu_fdt_setprop(ms->fdt, node, "interrupt-names", irq_names, + sizeof(irq_names)); + + qemu_fdt_setprop(ms->fdt, node, "dma-coherent", NULL, 0); + qemu_fdt_setprop_cell(ms->fdt, node, "#iommu-cells", 1); + qemu_fdt_setprop_cell(ms->fdt, node, "phandle", vms->iommu_phandle); + g_free(node); +} + +static void create_smmuv3_dev_dtb(VirtMachineState *vms, + DeviceState *dev, PCIBus *bus) +{ + PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev); + SysBusDevice *sbdev = SYS_BUS_DEVICE(dev); + int irq = platform_bus_get_irqn(pbus, sbdev, 0); + hwaddr base = platform_bus_get_mmio_addr(pbus, sbdev, 0); + MachineState *ms = MACHINE(vms); + + if (!(vms->bootinfo.firmware_loaded && virt_is_acpi_enabled(vms)) && + strcmp("pcie.0", bus->qbus.name)) { + warn_report("SMMUv3 device only supported with pcie.0 for DT"); + return; + } + base += vms->memmap[VIRT_PLATFORM_BUS].base; + irq += vms->irqmap[VIRT_PLATFORM_BUS]; + + vms->iommu_phandle = qemu_fdt_alloc_phandle(ms->fdt); + create_smmuv3_dt_bindings(vms, base, SMMU_IO_LEN, irq); + qemu_fdt_setprop_cells(ms->fdt, vms->pciehb_nodename, "iommu-map", + 0x0, vms->iommu_phandle, 0x0, 0x10000); +} + static void create_smmu(const VirtMachineState *vms, PCIBus *bus) { VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); - char *node; - const char compat[] = "arm,smmu-v3"; int irq = vms->irqmap[VIRT_SMMU]; int i; hwaddr base = vms->memmap[VIRT_SMMU].base; hwaddr size = vms->memmap[VIRT_SMMU].size; - const char irq_names[] = "eventq\0priq\0cmdq-sync\0gerror"; DeviceState *dev; - MachineState *ms = MACHINE(vms); if (vms->iommu != VIRT_IOMMU_SMMUV3 || !vms->iommu_phandle) { return; @@ -1473,27 +1524,7 @@ static void create_smmu(const VirtMachineState *vms, sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, qdev_get_gpio_in(vms->gic, irq + i)); } - - node = g_strdup_printf("/smmuv3@%" PRIx64, base); - qemu_fdt_add_subnode(ms->fdt, node); - qemu_fdt_setprop(ms->fdt, node, "compatible", compat, sizeof(compat)); - qemu_fdt_setprop_sized_cells(ms->fdt, node, "reg", 2, base, 2, size); - - qemu_fdt_setprop_cells(ms->fdt, node, "interrupts", - GIC_FDT_IRQ_TYPE_SPI, irq , GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, - GIC_FDT_IRQ_TYPE_SPI, irq + 1, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, - GIC_FDT_IRQ_TYPE_SPI, irq + 2, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI, - GIC_FDT_IRQ_TYPE_SPI, irq + 3, GIC_FDT_IRQ_FLAGS_EDGE_LO_HI); - - qemu_fdt_setprop(ms->fdt, node, "interrupt-names", irq_names, - sizeof(irq_names)); - - qemu_fdt_setprop(ms->fdt, node, "dma-coherent", NULL, 0); - - qemu_fdt_setprop_cell(ms->fdt, node, "#iommu-cells", 1); - - qemu_fdt_setprop_cell(ms->fdt, node, "phandle", vms->iommu_phandle); - g_free(node); + create_smmuv3_dt_bindings(vms, base, size, irq); } static void create_virtio_iommu_dt_bindings(VirtMachineState *vms) @@ -1649,6 +1680,7 @@ static void create_pcie(VirtMachineState *vms) qemu_fdt_setprop_cells(ms->fdt, nodename, "iommu-map", 0x0, vms->iommu_phandle, 0x0, 0x10000); } + vms->legacy_smmuv3_present = true; break; default: g_assert_not_reached(); @@ -2996,6 +3028,16 @@ static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, qlist_append_str(reserved_regions, resv_prop_str); qdev_prop_set_array(dev, "reserved-regions", reserved_regions); g_free(resv_prop_str); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_ARM_SMMUV3)) { + if (vms->legacy_smmuv3_present || vms->iommu == VIRT_IOMMU_VIRTIO) { + error_setg(errp, "virt machine already has %s set. " + "Doesn't support incompatible iommus", + (vms->legacy_smmuv3_present) ? + "iommu=smmuv3" : "virtio-iommu"); + } else if (vms->iommu == VIRT_IOMMU_NONE) { + /* The new SMMUv3 device is specific to the PCI bus */ + object_property_set_bool(OBJECT(dev), "smmu_per_bus", true, NULL); + } } } @@ -3019,6 +3061,22 @@ static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev, virtio_md_pci_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } + if (object_dynamic_cast(OBJECT(dev), TYPE_ARM_SMMUV3)) { + if (!vms->legacy_smmuv3_present && vms->platform_bus_dev) { + PCIBus *bus; + + bus = PCI_BUS(object_property_get_link(OBJECT(dev), "primary-bus", + &error_abort)); + if (pci_bus_bypass_iommu(bus)) { + error_setg(errp, "Bypass option cannot be set for SMMUv3 " + "associated PCIe RC"); + return; + } + + create_smmuv3_dev_dtb(vms, dev, bus); + } + } + if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) { PCIDevice *pdev = PCI_DEVICE(dev); @@ -3218,6 +3276,7 @@ static void virt_machine_class_init(ObjectClass *oc, const void *data) mc->max_cpus = 512; machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE); machine_class_allow_dynamic_sysbus_dev(mc, TYPE_UEFI_VARS_SYSBUS); + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_ARM_SMMUV3); #ifdef CONFIG_TPM machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS); #endif |