diff options
| author | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2023-01-02 13:58:21 +0300 |
|---|---|---|
| committer | Bjorn Andersson <andersson@kernel.org> | 2023-01-11 07:52:00 +0300 |
| commit | ff384ab56f164ef14bcc5f2bd79e995b4dea4bf3 (patch) | |
| tree | e3ded9ba9704e16e03286b08e5b198314cac0935 /arch/arm64/boot/dts/qcom/sm8450.dtsi | |
| parent | 66b14154e278807811d67de9fb0d5cc76638d07b (diff) | |
| download | linux-ff384ab56f164ef14bcc5f2bd79e995b4dea4bf3.tar.xz | |
arm64: dts: qcom: sm8450: Use GIC-ITS for PCIe0 and PCIe1
Both PCIe0 and PCIe1 controllers are capable of signalling the MSIs
received from endpoint devices to the CPU using GIC-ITS MSI controller.
Add support for it.
Currently, BDF (0:0.0) and BDF (1:0.0) are enabled and with the
msi-map-mask of 0xff00, all the 32 devices under these two busses can
share the same Device ID.
The GIC-ITS MSI implementation provides an advantage over internal MSI
implementation using Locality-specific Peripheral Interrupts (LPI) that
would allow MSIs to be targeted for each CPU core.
It should be noted that the MSIs for BDF (1:0.0) only works with Device
ID of 0x5980 and 0x5a00. Hence, the IDs are swapped.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Tested-by: Konrad Dybcio <konrad.dybcio@linaro.org> # Xperia 1 IV (WCN6855)
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230102105821.28243-4-manivannan.sadhasivam@linaro.org
Diffstat (limited to 'arch/arm64/boot/dts/qcom/sm8450.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/qcom/sm8450.dtsi | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi index 70188e385d02..639146088f38 100644 --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi @@ -1742,9 +1742,13 @@ ranges = <0x01000000 0x0 0x60200000 0 0x60200000 0x0 0x100000>, <0x02000000 0x0 0x60300000 0 0x60300000 0x0 0x3d00000>; - interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>; - interrupt-names = "msi"; - #interrupt-cells = <1>; + /* + * MSIs for BDF (1:0.0) only works with Device ID 0x5980. + * Hence, the IDs are swapped. + */ + msi-map = <0x0 &gic_its 0x5981 0x1>, + <0x100 &gic_its 0x5980 0x1>; + msi-map-mask = <0xff00>; interrupt-map-mask = <0 0 0 0x7>; interrupt-map = <0 0 0 1 &intc 0 0 0 149 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ <0 0 0 2 &intc 0 0 0 150 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ @@ -1851,9 +1855,13 @@ ranges = <0x01000000 0x0 0x40200000 0 0x40200000 0x0 0x100000>, <0x02000000 0x0 0x40300000 0 0x40300000 0x0 0x1fd00000>; - interrupts = <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>; - interrupt-names = "msi"; - #interrupt-cells = <1>; + /* + * MSIs for BDF (1:0.0) only works with Device ID 0x5a00. + * Hence, the IDs are swapped. + */ + msi-map = <0x0 &gic_its 0x5a01 0x1>, + <0x100 &gic_its 0x5a00 0x1>; + msi-map-mask = <0xff00>; interrupt-map-mask = <0 0 0 0x7>; interrupt-map = <0 0 0 1 &intc 0 0 0 434 IRQ_TYPE_LEVEL_HIGH>, /* int_a */ <0 0 0 2 &intc 0 0 0 435 IRQ_TYPE_LEVEL_HIGH>, /* int_b */ |