| Message ID | 20240607105415.2501934-2-jean-philippe@linaro.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | Enable PCIe ATS for devicetree boot | expand |
Hi Joerg, On Fri, Jun 07, 2024 at 11:54:13AM +0100, Jean-Philippe Brucker wrote: > Before enabling Address Translation Support (ATS) in endpoints, the OS > needs to confirm that the Root Complex supports it. Obtain this > information from the firmware description since there is no architected > method. ACPI provides a bit via IORT tables, so add the devicetree > equivalent. > > Since v1 [1] I added the review and ack tags, thanks all. This should be > ready to go via the IOMMU tree. This series enables ATS for devicetree boot, and is needed on an Nvidia system: https://lore.kernel.org/linux-arm-kernel/ZeJP6CwrZ2FSbTYm@Asurada-Nvidia/ Would you mind picking it up for v6.11? Thanks, Jean > > [1] https://lore.kernel.org/all/20240429113938.192706-2-jean-philippe@linaro.org/ > > Jean-Philippe Brucker (3): > dt-bindings: PCI: generic: Add ats-supported property > iommu/of: Support ats-supported device-tree property > arm64: dts: fvp: Enable PCIe ATS for Base RevC FVP > > .../devicetree/bindings/pci/host-generic-pci.yaml | 6 ++++++ > drivers/iommu/of_iommu.c | 9 +++++++++ > arch/arm64/boot/dts/arm/fvp-base-revc.dts | 1 + > 3 files changed, 16 insertions(+) > > -- > 2.45.2 >
On Mon, Jul 01, 2024 at 11:24:00AM +0100, Jean-Philippe Brucker wrote: > On Fri, Jun 07, 2024 at 11:54:13AM +0100, Jean-Philippe Brucker wrote: > > Before enabling Address Translation Support (ATS) in endpoints, the OS > > needs to confirm that the Root Complex supports it. Obtain this > > information from the firmware description since there is no architected > > method. ACPI provides a bit via IORT tables, so add the devicetree > > equivalent. > > > > Since v1 [1] I added the review and ack tags, thanks all. This should be > > ready to go via the IOMMU tree. > > This series enables ATS for devicetree boot, and is needed on an Nvidia > system: https://lore.kernel.org/linux-arm-kernel/ZeJP6CwrZ2FSbTYm@Asurada-Nvidia/ > > Would you mind picking it up for v6.11? I'll take a look. Will
On Mon, Jul 01, 2024 at 12:57:23PM +0100, Will Deacon wrote: > On Mon, Jul 01, 2024 at 11:24:00AM +0100, Jean-Philippe Brucker wrote: > > On Fri, Jun 07, 2024 at 11:54:13AM +0100, Jean-Philippe Brucker wrote: > > > Before enabling Address Translation Support (ATS) in endpoints, the OS > > > needs to confirm that the Root Complex supports it. Obtain this > > > information from the firmware description since there is no architected > > > method. ACPI provides a bit via IORT tables, so add the devicetree > > > equivalent. > > > > > > Since v1 [1] I added the review and ack tags, thanks all. This should be > > > ready to go via the IOMMU tree. > > > > This series enables ATS for devicetree boot, and is needed on an Nvidia > > system: https://lore.kernel.org/linux-arm-kernel/ZeJP6CwrZ2FSbTYm@Asurada-Nvidia/ > > > > Would you mind picking it up for v6.11? > > I'll take a look. Thanks Will, coming back from holidays I hadn't seen Joerg's announce from Friday before sending this Thanks, Jean
On Fri, 07 Jun 2024 11:54:13 +0100, Jean-Philippe Brucker wrote: > Before enabling Address Translation Support (ATS) in endpoints, the OS > needs to confirm that the Root Complex supports it. Obtain this > information from the firmware description since there is no architected > method. ACPI provides a bit via IORT tables, so add the devicetree > equivalent. > > Since v1 [1] I added the review and ack tags, thanks all. This should be > ready to go via the IOMMU tree. > > [...] Applied to iommu (pci/ats), thanks! [1/3] dt-bindings: PCI: generic: Add ats-supported property https://git.kernel.org/iommu/c/40929e8e5449 [2/3] iommu/of: Support ats-supported device-tree property https://git.kernel.org/iommu/c/86e02a88bedc [3/3] arm64: dts: fvp: Enable PCIe ATS for Base RevC FVP https://git.kernel.org/iommu/c/6bac3388889c Cheers,