iommu.lists.linux-foundation.org archive mirror
 help / color / mirror / Atom feed
From: Marcin Wojtas <mw@semihalf.com>
To: Tomasz Nowicki <tn@semihalf.com>
Cc: devicetree@vger.kernel.org,
	"Grégory Clement" <gregory.clement@bootlin.com>,
	"Robin Murphy" <robin.murphy@arm.com>,
	"Hanna Hawa" <hannah@marvell.com>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	nadavh@marvell.com, iommu@lists.linux-foundation.org,
	"Rob Herring" <robh+dt@kernel.org>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	will@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 4/4] arm64: dts: marvell: add SMMU support
Date: Fri, 3 Jul 2020 12:38:28 +0200	[thread overview]
Message-ID: <CAPv3WKedrn0eXY_Eg9TMq=GFqmbRUqQXE4VfDvMNffv5x961LA@mail.gmail.com> (raw)
In-Reply-To: <3d9b3d16-00e4-d3b5-344b-8515c70fb83e@semihalf.com>

Hi Tomasz,


pt., 3 lip 2020 o 11:33 Tomasz Nowicki <tn@semihalf.com> napisał(a):
>
> On 03.07.2020 11:16, Robin Murphy wrote:
> > 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.
> >
>
> Good point! I will fix this.
>

In addition to above, I think it is worth defining the stream ID's for
Armada 7040 and CN913x SoCs.

Best regards,
Marcin
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

  reply	other threads:[~2020-07-06  8:05 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
2020-07-03  9:33     ` Tomasz Nowicki
2020-07-03 10:38       ` Marcin Wojtas [this message]
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAPv3WKedrn0eXY_Eg9TMq=GFqmbRUqQXE4VfDvMNffv5x961LA@mail.gmail.com' \
    --to=mw@semihalf.com \
    --cc=catalin.marinas@arm.com \
    --cc=devicetree@vger.kernel.org \
    --cc=gregory.clement@bootlin.com \
    --cc=hannah@marvell.com \
    --cc=iommu@lists.linux-foundation.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=nadavh@marvell.com \
    --cc=robh+dt@kernel.org \
    --cc=robin.murphy@arm.com \
    --cc=tn@semihalf.com \
    --cc=will@kernel.org \
    --subject='Re: [PATCH v3 4/4] arm64: dts: marvell: add SMMU support' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).