From: Robin Murphy <robin.murphy@arm.com>
To: Tomasz Nowicki <tn@semihalf.com>,
will@kernel.org, joro@8bytes.org, gregory.clement@bootlin.com,
robh+dt@kernel.org, hannah@marvell.com
Cc: devicetree@vger.kernel.org, catalin.marinas@arm.com,
linux-kernel@vger.kernel.org, nadavh@marvell.com,
iommu@lists.linux-foundation.org, mw@semihalf.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 4/4] arm64: dts: marvell: add SMMU support
Date: Fri, 3 Jul 2020 10:16:50 +0100 [thread overview]
Message-ID: <ba29e839-79e0-7189-f735-d457544135e4@arm.com> (raw)
In-Reply-To: <20200702201633.22693-5-tn@semihalf.com>
On 2020-07-02 21:16, Tomasz Nowicki wrote:
> From: Marcin Wojtas <mw@semihalf.com>
>
> Add IOMMU node for Marvell AP806 based SoCs together with platform
> and PCI device Stream ID mapping.
>
> Signed-off-by: Marcin Wojtas <mw@semihalf.com>
> Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
> ---
> arch/arm64/boot/dts/marvell/armada-8040.dtsi | 36 +++++++++++++++++++
> arch/arm64/boot/dts/marvell/armada-ap80x.dtsi | 17 +++++++++
> 2 files changed, 53 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/marvell/armada-8040.dtsi b/arch/arm64/boot/dts/marvell/armada-8040.dtsi
> index 7699b19224c2..25c1df709f72 100644
> --- a/arch/arm64/boot/dts/marvell/armada-8040.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-8040.dtsi
> @@ -23,3 +23,39 @@
> &cp0_rtc {
> status = "disabled";
> };
> +
> +&cp0_usb3_0 {
> + iommus = <&smmu 0x440>;
> +};
> +
> +&cp0_usb3_1 {
> + iommus = <&smmu 0x441>;
> +};
> +
> +&cp0_sata0 {
> + iommus = <&smmu 0x444>;
> +};
> +
> +&cp0_sdhci0 {
> + iommus = <&smmu 0x445>;
> +};
> +
> +&cp1_sata0 {
> + iommus = <&smmu 0x454>;
> +};
> +
> +&cp1_usb3_0 {
> + iommus = <&smmu 0x450>;
> +};
> +
> +&cp1_usb3_1 {
> + iommus = <&smmu 0x451>;
> +};
> +
> +&cp0_pcie0 {
> + iommu-map =
> + <0x0 &smmu 0x480 0x20>,
> + <0x100 &smmu 0x4a0 0x20>,
> + <0x200 &smmu 0x4c0 0x20>;
> + iommu-map-mask = <0x031f>;
Nice! I do like a good compressed mapping :D
> +};
> diff --git a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> index 7f9b9a647717..ded8b8082d79 100644
> --- a/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> +++ b/arch/arm64/boot/dts/marvell/armada-ap80x.dtsi
> @@ -56,6 +56,23 @@
> compatible = "simple-bus";
> ranges = <0x0 0x0 0xf0000000 0x1000000>;
>
> + smmu: iommu@5000000 {
> + compatible = "marvell,ap806-smmu-500", "arm,mmu-500";
> + reg = <0x100000 0x100000>;
> + dma-coherent;
> + #iommu-cells = <1>;
> + #global-interrupts = <1>;
> + interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
I'd recommend you have the node disabled by default here, then
explicitly enable it in armada-8040.dtsi where you add the Stream IDs.
Otherwise it will also end up enabled for 8020, 70x0, etc. where
disable_bypass will then catastrophically break everything.
Robin.
> + };
> +
> gic: interrupt-controller@210000 {
> compatible = "arm,gic-400";
> #interrupt-cells = <3>;
>
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next prev parent reply other threads:[~2020-07-03 9:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 20:16 [PATCH v3 0/4] Add system mmu support for Armada-806 Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 1/4] iommu/arm-smmu: Add SMMU ID2 register fixup hook Tomasz Nowicki
2020-07-03 8:24 ` Robin Murphy
2020-07-03 9:19 ` Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 2/4] iommu/arm-smmu: Workaround for Marvell Armada-AP806 SoC erratum #582743 Tomasz Nowicki
2020-07-03 9:03 ` Robin Murphy
2020-07-03 11:24 ` Tomasz Nowicki
2020-07-02 20:16 ` [PATCH v3 3/4] dt-bindings: arm-smmu: add compatible string for Marvell Armada-AP806 SMMU-500 Tomasz Nowicki
2020-07-03 9:05 ` Robin Murphy
2020-07-03 9:26 ` Tomasz Nowicki
2020-07-13 21:36 ` Rob Herring
2020-07-02 20:16 ` [PATCH v3 4/4] arm64: dts: marvell: add SMMU support Tomasz Nowicki
2020-07-03 9:16 ` Robin Murphy [this message]
2020-07-03 9:33 ` Tomasz Nowicki
2020-07-03 10:38 ` Marcin Wojtas
2020-07-14 8:19 ` [PATCH v3 0/4] Add system mmu support for Armada-806 Will Deacon
2020-07-14 10:26 ` Tomasz Nowicki
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