Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 33048396 authored by Raghu Ananya Arabolu's avatar Raghu Ananya Arabolu
Browse files

msm: kgsl: Enable IOMMU hazard check for QSMMU MMU type 



Enable hazard check for GPU IOMMU and disable DORA reordering when
the MMU type is QSMMU.

Change-Id: I3a197ad0b222b33688e40bd028241869b4b76ebc
Signed-off-by: default avatarRaghu Ananya Arabolu <rarabolu@codeaurora.org>
parent 70fe4cf2

drivers/gpu/msm/kgsl_iommu.c

+12 −0
Original line number Diff line number Diff line
@@ -1623,6 +1623,18 @@ static int kgsl_iommu_start(struct kgsl_mmu *mmu) 
	int status;

	struct kgsl_iommu *iommu = _IOMMU_PRIV(mmu);



	/* Set the following registers only when the MMU type is QSMMU */

	if (mmu->subtype != KGSL_IOMMU_SMMU_V500) {

		/* Enable hazard check from GPU_SMMU_HUM_CFG */

		writel_relaxed(0x02, iommu->regbase + 0x6800);



		/* Write to GPU_SMMU_DORA_ORDERING to disable reordering */

		writel_relaxed(0x01, iommu->regbase + 0x64a0);



		/* make sure register write committed */

		wmb();

	}



	status = _setup_user_context(mmu);

	if (status)

		return status;