Merge "msm: kgsl: Change default pagetable creation sequence" (8e6e4ceb) · Commits · e / devices / android_kernel_xiaomi_nabu

drivers/gpu/msm/kgsl_iommu.c

+27 −14

Original line number	Diff line number	Diff line
		@@ -151,10 +151,12 @@ static int kgsl_iommu_map_globals(struct kgsl_pagetable *pagetable)
		int ret = kgsl_mmu_map(pagetable,
		global_pt_entries[i].memdesc);

		if (ret)
		if (ret) {
		kgsl_iommu_unmap_globals(pagetable);
		return ret;
		}
		}
		}

		return 0;
		}
		@@ -1075,6 +1077,8 @@ static void kgsl_iommu_destroy_pagetable(struct kgsl_pagetable *pt)
		} else {
		ctx = &iommu->ctx[KGSL_IOMMU_CONTEXT_USER];
		kgsl_iommu_unmap_globals(pt);
		if (pt->name == KGSL_MMU_GLOBAL_PT)
		mmu->globalpt_mapped = false;
		}

		if (iommu_pt->domain) {
		@@ -1308,7 +1312,6 @@ static int _init_global_pt(struct kgsl_mmu mmu, struct kgsl_pagetable pt)
		goto done;
		}

		ret = kgsl_iommu_map_globals(pt);

		done:
		if (ret)
		@@ -1611,6 +1614,18 @@ static int kgsl_iommu_init(struct kgsl_mmu *mmu)
		kgsl_setup_qdss_desc(device);
		kgsl_setup_qtimer_desc(device);

		mmu->defaultpagetable = kgsl_mmu_getpagetable(mmu,
		KGSL_MMU_GLOBAL_PT);
		/* if we don't have a default pagetable, nothing will work */
		if (IS_ERR(mmu->defaultpagetable)) {
		status = PTR_ERR(mmu->defaultpagetable);
		mmu->defaultpagetable = NULL;
		goto done;
		} else if (mmu->defaultpagetable == NULL) {
		status = -ENOMEM;
		goto done;
		}

		if (!mmu->secured)
		goto done;

		@@ -1640,18 +1655,8 @@ static int _setup_user_context(struct kgsl_mmu *mmu)
		struct kgsl_iommu_pt *iommu_pt = NULL;
		unsigned int sctlr_val;

		if (mmu->defaultpagetable == NULL) {
		mmu->defaultpagetable = kgsl_mmu_getpagetable(mmu,
		KGSL_MMU_GLOBAL_PT);
		/* if we don't have a default pagetable, nothing will work */
		if (IS_ERR(mmu->defaultpagetable)) {
		ret = PTR_ERR(mmu->defaultpagetable);
		mmu->defaultpagetable = NULL;
		return ret;
		} else if (mmu->defaultpagetable == NULL) {
		if (mmu->defaultpagetable == NULL)
		return -ENOMEM;
		}
		}

		iommu_pt = mmu->defaultpagetable->priv;
		if (iommu_pt == NULL)
		@@ -1745,6 +1750,14 @@ static int kgsl_iommu_start(struct kgsl_mmu *mmu)
		return status;
		}

		if (mmu->defaultpagetable != NULL && !mmu->globalpt_mapped) {
		status = kgsl_iommu_map_globals(mmu->defaultpagetable);
		if (status)
		return status;

		mmu->globalpt_mapped = true;
		}

		/* Make sure the hardware is programmed to the default pagetable */
		return kgsl_iommu_set_pt(mmu, mmu->defaultpagetable);
		}

drivers/gpu/msm/kgsl_mmu.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -150,6 +150,7 @@ struct kgsl_mmu_pt_ops {
		* @defaultpagetable: Default pagetable object for the MMU
		* @securepagetable: Default secure pagetable object for the MMU
		* @mmu_ops: Function pointers for the MMU sub-type
		* @globalpt_mapped: True if global pagetable entries mapped
		* @secured: True if the MMU needs to be secured
		* @feature: Static list of MMU features
		* @secure_aligned_mask: Mask that secure buffers need to be aligned to
		@@ -163,6 +164,7 @@ struct kgsl_mmu {
		struct kgsl_pagetable *defaultpagetable;
		struct kgsl_pagetable *securepagetable;
		const struct kgsl_mmu_ops *mmu_ops;
		bool globalpt_mapped;
		bool secured;
		unsigned long features;
		unsigned int secure_align_mask;