Commit c37d9f0b authored by Abhinav Kumar's avatar Abhinav Kumar Committed by Dmitry Baryshkov
Browse files

drm/msm/iommu: introduce msm_iommu_disp_new() for msm_kms 



Introduce a new API msm_iommu_disp_new() for display use-cases.

Signed-off-by: default avatarAbhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarJessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/638363/
Link: https://lore.kernel.org/r/20250219-abhinavk-smmu-fault-handler-v3-3-aa3f0bf4434a@quicinc.com


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent f66f3cf6

drivers/gpu/drm/msm/msm_iommu.c

+26 −0
Original line number Diff line number Diff line
@@ -343,6 +343,17 @@ static int msm_gpu_fault_handler(struct iommu_domain *domain, struct device *dev 
	return 0;

}



static int msm_disp_fault_handler(struct iommu_domain *domain, struct device *dev,

				  unsigned long iova, int flags, void *arg)

{

	struct msm_iommu *iommu = arg;



	if (iommu->base.handler)

		return iommu->base.handler(iommu->base.arg, iova, flags, NULL);



	return -ENOSYS;

}



static void msm_iommu_resume_translation(struct msm_mmu *mmu)

{

	struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(mmu->dev);
@@ -437,6 +448,21 @@ struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks) 
	return &iommu->base;

}



struct msm_mmu *msm_iommu_disp_new(struct device *dev, unsigned long quirks)

{

	struct msm_iommu *iommu;

	struct msm_mmu *mmu;



	mmu = msm_iommu_new(dev, quirks);

	if (IS_ERR_OR_NULL(mmu))

		return mmu;



	iommu = to_msm_iommu(mmu);

	iommu_set_fault_handler(iommu->domain, msm_disp_fault_handler, iommu);



	return mmu;

}



struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks)

{

	struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(dev);

drivers/gpu/drm/msm/msm_mmu.h

+1 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, 


struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks);

struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks);

struct msm_mmu *msm_iommu_disp_new(struct device *dev, unsigned long quirks);



static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,

		int (*handler)(void *arg, unsigned long iova, int flags, void *data))