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[DOWNSTREAM] iommu/arm-smmu-v3: Retain prod and cons after resume

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Set PROD and CONS registers of VCMDQs with retained values from
prod and cons variables after SC7 resume.

Bug 5117507

Change-Id: Ida34bb04ce669fdc7901fa935e2a2eff806e3d1e
Signed-off-by: Ashish Mhetre <amhetre@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/3rdparty/canonical/linux-noble/+/3447044
Reviewed-by: Pritesh Raithatha <praithatha@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Ashish Mhetre
2025-02-19 17:24:37 +00:00
parent c16f161cd7
commit c79ae7acb3
1 changed files with 2 additions and 0 deletions
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2
drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c
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@@ -396,6 +396,8 @@ static int tegra241_vcmdq_hw_init(struct tegra241_vcmdq *vcmdq)
/* Configure and enable VCMDQ */ /* Configure and enable VCMDQ */
writel_relaxed(upper_32_bits(vcmdq->cmdq.q.q_base), REG_VCMDQ_PAGE1(vcmdq, BASE_H)); writel_relaxed(upper_32_bits(vcmdq->cmdq.q.q_base), REG_VCMDQ_PAGE1(vcmdq, BASE_H));
writel_relaxed(lower_32_bits(vcmdq->cmdq.q.q_base), REG_VCMDQ_PAGE1(vcmdq, BASE)); writel_relaxed(lower_32_bits(vcmdq->cmdq.q.q_base), REG_VCMDQ_PAGE1(vcmdq, BASE));
writel_relaxed(vcmdq->cmdq.q.llq.prod, REG_VCMDQ_PAGE0(vcmdq, PROD));
writel_relaxed(vcmdq->cmdq.q.llq.cons, REG_VCMDQ_PAGE0(vcmdq, CONS));
ret = vcmdq_write_config(vcmdq, VCMDQ_EN); ret = vcmdq_write_config(vcmdq, VCMDQ_EN);
if (ret) { if (ret) {