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Remove vms->its as it's no longer needed after that change. Signed-off-by: Mohamed Mediouni Reviewed-by: Peter Maydell --- hw/arm/virt-acpi-build.c | 20 ++++--- hw/arm/virt.c | 121 ++++++++++++++++++++++++++++++++++++--- include/hw/arm/virt.h | 5 +- 3 files changed, 130 insertions(+), 16 deletions(-) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index c145678185..544004615d 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -569,7 +569,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) nb_nodes =3D num_smmus + 1; /* RC and SMMUv3 */ rc_mapping_count =3D rc_smmu_idmaps_len; =20 - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { /* * Knowing the ID ranges from the RC to the SMMU, it's possibl= e to * determine the ID ranges from RC that go directly to ITS. @@ -590,7 +590,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) } } } else { - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { nb_nodes =3D 2; /* RC and ITS */ rc_mapping_count =3D 1; /* Direct map to ITS */ } else { @@ -605,7 +605,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ =20 - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { /* Table 12 ITS Group Format */ build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Ty= pe */ node_size =3D 20 /* fixed header size */ + 4 /* 1 GIC ITS Identif= ier */; @@ -624,7 +624,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) int smmu_mapping_count, offset_to_id_array; int irq =3D sdev->irq; =20 - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { smmu_mapping_count =3D 1; /* ITS Group node */ offset_to_id_array =3D SMMU_V3_ENTRY_SIZE; /* Just after the h= eader */ } else { @@ -717,7 +717,7 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) } } =20 - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { /* * Map bypassed (don't go through the SMMU) RIDs (input) to * ITS Group node directly: RC -> ITS. @@ -735,7 +735,9 @@ build_iort(GArray *table_data, BIOSLinker *linker, Virt= MachineState *vms) * SMMU: RC -> ITS. * Output IORT node is the ITS Group node (the first node). */ - build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET, 0); + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { + build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET= , 0); + } } =20 build_iort_rmr_nodes(table_data, smmuv3_devs, &id); @@ -1053,7 +1055,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, Vi= rtMachineState *vms) memmap[VIRT_HIGH_GIC_REDIST2].si= ze); } =20 - if (vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { /* * ACPI spec, Revision 6.0 Errata A * (original 6.0 definition has invalid Length) @@ -1067,7 +1069,9 @@ build_madt(GArray *table_data, BIOSLinker *linker, Vi= rtMachineState *vms) build_append_int_noprefix(table_data, memmap[VIRT_GIC_ITS].bas= e, 8); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } - } else { + } + + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_GICV2M) { const uint16_t spi_base =3D vms->irqmap[VIRT_GIC_V2M] + ARM_SPI_BA= SE; =20 /* 5.2.12.16 GIC MSI Frame Structure */ diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 390845c503..dde43caba9 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -737,7 +737,6 @@ static void create_its(VirtMachineState *vms) { DeviceState *dev; =20 - assert(vms->its); if (!kvm_irqchip_in_kernel() && !vms->tcg_its) { /* * Do nothing if ITS is neither supported by the host nor emulated= by @@ -957,9 +956,9 @@ static void create_gic(VirtMachineState *vms, MemoryReg= ion *mem) =20 fdt_add_gic_node(vms); =20 - if (vms->gic_version !=3D VIRT_GIC_VERSION_2 && vms->its) { + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { create_its(vms); - } else if (vms->gic_version =3D=3D VIRT_GIC_VERSION_2) { + } else if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_GICV2M) { create_v2m(vms); } } @@ -2137,6 +2136,46 @@ static void finalize_gic_version(VirtMachineState *v= ms) gics_supported, max_cpus); } =20 +static void finalize_msi_controller(VirtMachineState *vms) +{ + /* + * VIRT_MSI_LEGACY_OPT_ITS_OFF is an option to replicate + * behavior of its=3Doff when running with a GICv2, where a + * GICv2m is still present. Otherwise, it behaves the same + * as msi=3Doff. + */ + if (vms->msi_controller =3D=3D VIRT_MSI_LEGACY_OPT_ITS_OFF) { + if (vms->gic_version =3D=3D 2) { + vms->msi_controller =3D VIRT_MSI_CTRL_GICV2M; + } + else { + vms->msi_controller =3D VIRT_MSI_CTRL_NONE; + } + } + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_AUTO) { + if (vms->gic_version =3D=3D VIRT_GIC_VERSION_2) { + vms->msi_controller =3D VIRT_MSI_CTRL_GICV2M; + } + else { + vms->msi_controller =3D VIRT_MSI_CTRL_ITS; + } + } + + if (vms->msi_controller =3D=3D VIRT_MSI_CTRL_ITS) { + if (vms->gic_version =3D=3D VIRT_GIC_VERSION_2) { + /* + * The legacy its=3D option in earlier releases allowed specif= ying + * this configuration and treated it as GICv3 + GICv2m. + * Diagnose it as an error even for that case.=20 + */ + error_report("GICv2 + ITS is an invalid configuration."); + exit(1); + } + } + + assert(vms->msi_controller !=3D VIRT_MSI_CTRL_AUTO); +} + /* * virt_post_cpus_gic_realized() must be called after the CPUs and * the GIC have both been realized. @@ -2256,6 +2295,7 @@ static void machvirt_init(MachineState *machine) * KVM is not available yet */ finalize_gic_version(vms); + finalize_msi_controller(vms); =20 if (vms->secure) { /* @@ -2705,18 +2745,76 @@ static void virt_set_highmem_mmio_size(Object *obj,= Visitor *v, extended_memmap[VIRT_HIGH_PCIE_MMIO].size =3D size; } =20 +static char *virt_get_msi(Object *obj, Error **errp) +{ + VirtMachineState *vms =3D VIRT_MACHINE(obj); + const char *val; + + switch (vms->msi_controller) { + case VIRT_MSI_CTRL_NONE: + case VIRT_MSI_LEGACY_OPT_ITS_OFF: + val =3D "off"; + break; + case VIRT_MSI_CTRL_ITS: + val =3D "its"; + break; + case VIRT_MSI_CTRL_GICV2M: + val =3D "gicv2m"; + break; + case VIRT_MSI_CTRL_AUTO: + val =3D "auto"; + break; + default: + g_assert_not_reached(); + } + return g_strdup(val); +} + +static void virt_set_msi(Object *obj, const char *value, Error **errp) +{ + ERRP_GUARD(); + VirtMachineState *vms =3D VIRT_MACHINE(obj); + + if (!strcmp(value, "auto")) { + vms->msi_controller =3D VIRT_MSI_CTRL_AUTO; /* Will be overriden l= ater */ + } else if (!strcmp(value, "its")) { + vms->msi_controller =3D VIRT_MSI_CTRL_ITS; + } else if (!strcmp(value, "gicv2m")) { + vms->msi_controller =3D VIRT_MSI_CTRL_GICV2M; + } else if (!strcmp(value, "off")) { + vms->msi_controller =3D VIRT_MSI_CTRL_NONE; + } else { + error_setg(errp, "Invalid msi value"); + error_append_hint(errp, "Valid values are auto, gicv2m, its, off\n= "); + } +} + static bool virt_get_its(Object *obj, Error **errp) { VirtMachineState *vms =3D VIRT_MACHINE(obj); =20 - return vms->its; + switch (vms->msi_controller) { + case VIRT_MSI_CTRL_AUTO: + case VIRT_MSI_CTRL_ITS: + return true; + case VIRT_MSI_CTRL_NONE: + case VIRT_MSI_CTRL_GICV2M: + case VIRT_MSI_LEGACY_OPT_ITS_OFF: + return false; + default: + g_assert_not_reached(); + } } =20 static void virt_set_its(Object *obj, bool value, Error **errp) { VirtMachineState *vms =3D VIRT_MACHINE(obj); =20 - vms->its =3D value; + if (value) { + vms->msi_controller =3D VIRT_MSI_CTRL_ITS; + } else { + vms->msi_controller =3D VIRT_MSI_LEGACY_OPT_ITS_OFF; + } } =20 static bool virt_get_dtb_randomness(Object *obj, Error **errp) @@ -3043,6 +3141,9 @@ static void virt_machine_device_pre_plug_cb(HotplugHa= ndler *hotplug_dev, db_start =3D base_memmap[VIRT_GIC_V2M].base; db_end =3D db_start + base_memmap[VIRT_GIC_V2M].size - 1; break; + case VIRT_MSI_CTRL_AUTO: + case VIRT_MSI_LEGACY_OPT_ITS_OFF: + g_assert_not_reached(); } resv_prop_str =3D g_strdup_printf("0x%"PRIx64":0x%"PRIx64":%u", db_start, db_end, @@ -3463,6 +3564,12 @@ static void virt_machine_class_init(ObjectClass *oc,= const void *data) "Set on/off to enable/disable " "ITS instantiation"); =20 + object_class_property_add_str(oc, "msi", virt_get_msi, + virt_set_msi); + object_class_property_set_description(oc, "msi", + "Set MSI settings. " + "Valid values are auto, gicv2m, = its and off"); + object_class_property_add_bool(oc, "dtb-randomness", virt_get_dtb_randomness, virt_set_dtb_randomness); @@ -3518,8 +3625,8 @@ static void virt_instance_init(Object *obj) vms->highmem_mmio =3D true; vms->highmem_redists =3D true; =20 - /* Default allows ITS instantiation */ - vms->its =3D true; + /* Default allows ITS instantiation if available */ + vms->msi_controller =3D VIRT_MSI_CTRL_AUTO; /* Allow ITS emulation if the machine version supports it */ vms->tcg_its =3D !vmc->no_tcg_its; =20 diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index 3b382bdf49..8069422769 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -101,6 +101,10 @@ typedef enum VirtIOMMUType { =20 typedef enum VirtMSIControllerType { VIRT_MSI_CTRL_NONE, + /* This value is overriden at runtime.*/ + VIRT_MSI_CTRL_AUTO, + /* Legacy option: its=3Doff provides a GICv2m when using GICv2 */ + VIRT_MSI_LEGACY_OPT_ITS_OFF, VIRT_MSI_CTRL_GICV2M, VIRT_MSI_CTRL_ITS, } VirtMSIControllerType; @@ -146,7 +150,6 @@ struct VirtMachineState { bool highmem_ecam; bool highmem_mmio; bool highmem_redists; - bool its; bool tcg_its; bool virt; bool ras; --=20 2.50.1 (Apple Git-155)