Nathan Chen <[email protected]> writes:
> From: Nathan Chen <[email protected]>
>
> Introduce a new enum type property allowing to set a Substream ID size
> for HW-accelerated smmuv3. Values are auto and 0..20. The auto value
> allows SSID size property to be derived from host IOMMU capabilities.
> A value of 0 disables SubstreamID, while non-zero values specify the
> SSID size in bits.
>
> Reviewed-by: Eric Auger <[email protected]>
> Tested-by: Eric Auger <[email protected]>
> Signed-off-by: Nathan Chen <[email protected]>
[...]
> diff --git a/qapi/misc-arm.json b/qapi/misc-arm.json
> index f921d740f1..76ea0a09fa 100644
> --- a/qapi/misc-arm.json
> +++ b/qapi/misc-arm.json
> @@ -45,3 +45,19 @@
> # { "version": 3, "emulated": false, "kernel": true } ] }
> ##
> { 'command': 'query-gic-capabilities', 'returns': ['GICCapability'] }
> +
> +##
> +# @SsidSizeMode:
> +#
> +# SMMUv3 SubstreamID size configuration mode.
> +#
> +# @auto: derive from host IOMMU capabilities
> +#
> +# Values 0-20: SSIDSIZE value in bits. 0 disables SubstreamID.
> +#
> +# Since: 11.0
> +##
> +{ 'enum': 'SsidSizeMode',
> + 'data': [ 'auto', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
> + '10', '11', '12', '13', '14', '15', '16', '17', '18',
> + '19', '20' ] } # order matters, see ssid_size_mode_auto()
As pointed out in review of the RFC, generated documentation will look
fairly bad, but we lack the means to do better right now.
> diff --git a/qapi/pragma.json b/qapi/pragma.json
> index 193bc39059..24aebbe8f5 100644
> --- a/qapi/pragma.json
> +++ b/qapi/pragma.json
> @@ -68,6 +68,7 @@
> 'S390CpuEntitlement',
> 'S390CpuPolarization',
> 'S390CpuState',
> + 'SsidSizeMode',
> 'String',
> 'StringWrapper',
> 'SysEmuTarget',
QAPI schema
Acked-by: Markus Armbruster <[email protected]>
