qdev: Add an OasMode property type
Introduce a new enum type property allowing to set an Output Address Size. Values are auto, 32, 36, 40, 42, 44, 48, 52, and 56, where a value of N specifies an N-bit OAS. Reviewed-by: Eric Auger <eric.auger@redhat.com> Tested-by: Eric Auger <eric.auger@redhat.com> Tested-by: Shameer Kolothum <skolothumtho@nvidia.com> Acked-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Nathan Chen <nathanc@nvidia.com> Message-id: 20260323182454.1416110-7-nathanc@nvidia.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Nathan Chen committed
Mar 24, 2026 at 14:02 UTC
d3d2de3d227b63db5715fcaa89df388c929c7aba
3 files changed
+44
hw/core/qdev-properties-system.c
+13
@@ -737,6 +737,19 @@ const PropertyInfo qdev_prop_ssidsize_mode = {
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.set_default_value = qdev_propinfo_set_default_value_enum,
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};
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+/* --- OasMode --- */
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+
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+QEMU_BUILD_BUG_ON(sizeof(OasMode) != sizeof(int));
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+
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+const PropertyInfo qdev_prop_oas_mode = {
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+ .type = "OasMode",
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+ .description = "oas mode: auto, 32, 36, 40, 42, 44, 48, 52, 56",
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+ .enum_table = &OasMode_lookup,
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+ .get = qdev_propinfo_get_enum,
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+ .set = qdev_propinfo_set_enum,
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+ .set_default_value = qdev_propinfo_set_default_value_enum,
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+};
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+
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/* --- Reserved Region --- */
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/*
include/hw/core/qdev-properties-system.h
+3
@@ -15,6 +15,7 @@ extern const PropertyInfo qdev_prop_mig_mode;
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extern const PropertyInfo qdev_prop_granule_mode;
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extern const PropertyInfo qdev_prop_zero_page_detection;
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extern const PropertyInfo qdev_prop_ssidsize_mode;
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+extern const PropertyInfo qdev_prop_oas_mode;
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extern const PropertyInfo qdev_prop_losttickpolicy;
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extern const PropertyInfo qdev_prop_blockdev_on_error;
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extern const PropertyInfo qdev_prop_bios_chs_trans;
@@ -64,6 +65,8 @@ extern const PropertyInfo qdev_prop_virtio_gpu_output_list;
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ZeroPageDetection)
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#define DEFINE_PROP_SSIDSIZE_MODE(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_ssidsize_mode, SsidSizeMode)
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+#define DEFINE_PROP_OAS_MODE(_n, _s, _f, _d) \
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+ DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_oas_mode, OasMode)
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#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
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DEFINE_PROP_SIGNED(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
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LostTickPolicy)
qapi/misc-arm.json
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@@ -61,3 +61,31 @@
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'data': [ 'auto', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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'10', '11', '12', '13', '14', '15', '16', '17', '18',
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'19', '20' ] } # order matters, see ssidsize_mode_to_value()
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+
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+##
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+# @OasMode:
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+#
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+# SMMUv3 Output Address Size configuration mode.
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+#
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+# @auto: derive from host IOMMU capabilities
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+#
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+# @32: 32-bit output address size
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+#
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+# @36: 36-bit output address size
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+#
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+# @40: 40-bit output address size
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+#
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+# @42: 42-bit output address size
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+#
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+# @44: 44-bit output address size
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+#
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+# @48: 48-bit output address size
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+#
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+# @52: 52-bit output address size
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+#
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+# @56: 56-bit output address size
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+#
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+# Since: 11.0
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+##
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+{ 'enum': 'OasMode',
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+ 'data': [ 'auto', '32', '36', '40', '42', '44', '48', '52', '56' ] }