| Message ID | 20190829123214.15565-1-paolo.pisati@canonical.com |
|---|---|
| Headers | show |
| Series | Dragonboard hangs after SMMU init | expand |
On Thu, Aug 29, 2019 at 02:32:12PM +0200, Paolo Pisati wrote: > BugLink: https://bugs.launchpad.net/bugs/1841893 > > Impact: > > Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: > > ... > [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... > [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: > [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation > [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops > [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk > [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) > [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups > [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) > [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 > [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA > [hangs here] > > Fix: > > During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't explicit clocks, power requirements and early init via IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the original qcom patch that was dropped, fixes this hang. > > How to test: > > Try to boot a patched kernel and see if it reaches userspace. > > Regression potential: > > None, since the current kernel version doesn't boot at all. > > > Paolo Pisati (1): > Revert "iommu/arm-smmu: Add support for qcom,smmu-v2 variant" > > Vivek Gautam (1): > iommu/arm-smmu: Add support for qcom,smmu-v2 variant > > .../devicetree/bindings/iommu/arm,smmu.txt | 42 ++++++++++++++++++++++ > drivers/iommu/arm-smmu.c | 13 ++++++- > 2 files changed, 54 insertions(+), 1 deletion(-) > > -- > 2.7.4 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team Ack for the entire patchset. Acked-by: Sultan Alsawaf <sultan.alsawaf@canonical.com>
On 8/29/19 2:32 PM, Paolo Pisati wrote: > BugLink: https://bugs.launchpad.net/bugs/1841893 > > Impact: > > Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: > > ... > [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... > [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: > [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation > [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops > [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk > [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) > [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups > [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) > [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 > [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA > [hangs here] > > Fix: > > During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't explicit clocks, power requirements and early init via IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the original qcom patch that was dropped, fixes this hang. > > How to test: > > Try to boot a patched kernel and see if it reaches userspace. > > Regression potential: > > None, since the current kernel version doesn't boot at all. > > > Paolo Pisati (1): > Revert "iommu/arm-smmu: Add support for qcom,smmu-v2 variant" > > Vivek Gautam (1): > iommu/arm-smmu: Add support for qcom,smmu-v2 variant > > .../devicetree/bindings/iommu/arm,smmu.txt | 42 ++++++++++++++++++++++ > drivers/iommu/arm-smmu.c | 13 ++++++- > 2 files changed, 54 insertions(+), 1 deletion(-) > Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
On 2019-08-29 14:32:12 , Paolo Pisati wrote: > BugLink: https://bugs.launchpad.net/bugs/1841893 > > Impact: > > Ubuntu-snapdragon-4.15.0-1061.68 hangs during boot: > > ... > [ 1.856849] arm-smmu da0000.arm,smmu: probing hardware configuration... > [ 1.859296] arm-smmu da0000.arm,smmu: SMMUv2 with: > [ 1.865845] arm-smmu da0000.arm,smmu: stage 1 translation > [ 1.870658] arm-smmu da0000.arm,smmu: address translation ops > [ 1.876121] arm-smmu da0000.arm,smmu: non-coherent table walk > [ 1.881936] arm-smmu da0000.arm,smmu: (IDR0.CTTW overridden by FW configuration) > [ 1.887760] arm-smmu da0000.arm,smmu: stream matching with 4 register groups > [ 1.895337] arm-smmu da0000.arm,smmu: 2 context banks (0 stage-2 only) > [ 1.902455] arm-smmu da0000.arm,smmu: Supported page sizes: 0x63315000 > [ 1.908852] arm-smmu da0000.arm,smmu: Stage-1: 32-bit VA -> 36-bit IPA > [hangs here] > > Fix: > > During the Ubuntu-snapdragon-4.15.0-1061.68, the qcom smmuv2 implementation was replaced with an upstream generic version that didn't explicit clocks, power requirements and early init via IOMMU_OF_DECLARE() - reverting the upstream patch, and reapplying the original qcom patch that was dropped, fixes this hang. > > How to test: > > Try to boot a patched kernel and see if it reaches userspace. > > Regression potential: > > None, since the current kernel version doesn't boot at all. > > > Paolo Pisati (1): > Revert "iommu/arm-smmu: Add support for qcom,smmu-v2 variant" > > Vivek Gautam (1): > iommu/arm-smmu: Add support for qcom,smmu-v2 variant > > .../devicetree/bindings/iommu/arm,smmu.txt | 42 ++++++++++++++++++++++ > drivers/iommu/arm-smmu.c | 13 ++++++- > 2 files changed, 54 insertions(+), 1 deletion(-) > > -- > 2.7.4 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team