iommu/ipmmu-vmsa: Add helper functions for "uTLB" registers (3667c997) · Commits · 戴 / test

drivers/iommu/ipmmu-vmsa.c

+21 −5

Original line number	Diff line number	Diff line
		@@ -230,6 +230,23 @@ static void ipmmu_ctx_write_all(struct ipmmu_vmsa_domain *domain,
		ipmmu_ctx_write(domain->mmu->root, domain->context_id, reg, data);
		}

		static u32 ipmmu_utlb_reg(struct ipmmu_vmsa_device *mmu, unsigned int reg)
		{
		return reg;
		}

		static void ipmmu_imuasid_write(struct ipmmu_vmsa_device *mmu,
		unsigned int utlb, u32 data)
		{
		ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUASID(utlb)), data);
		}

		static void ipmmu_imuctr_write(struct ipmmu_vmsa_device *mmu,
		unsigned int utlb, u32 data)
		{
		ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUCTR(utlb)), data);
		}

		/* -----------------------------------------------------------------------------
		* TLB and microTLB Management
		*/
		@@ -275,11 +292,10 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain,
		*/

		/* TODO: What should we set the ASID to ? */
		ipmmu_write(mmu, IMUASID(utlb), 0);
		ipmmu_imuasid_write(mmu, utlb, 0);
		/* TODO: Do we need to flush the microTLB ? */
		ipmmu_write(mmu, IMUCTR(utlb),
		IMUCTR_TTSEL_MMU(domain->context_id) \| IMUCTR_FLUSH \|
		IMUCTR_MMUEN);
		ipmmu_imuctr_write(mmu, utlb, IMUCTR_TTSEL_MMU(domain->context_id) \|
		IMUCTR_FLUSH \| IMUCTR_MMUEN);
		mmu->utlb_ctx[utlb] = domain->context_id;
		}

		@@ -291,7 +307,7 @@ static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain,
		{
		struct ipmmu_vmsa_device *mmu = domain->mmu;

		ipmmu_write(mmu, IMUCTR(utlb), 0);
		ipmmu_imuctr_write(mmu, utlb, 0);
		mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID;
		}