Merge branches 'for-joerg/arm-smmu/smmu-v2' and 'for-joerg/arm-smmu/smmu-v3' into for-joerg/arm-smmu/updates

* for-joerg/arm-smmu/smmu-v2:
  Refactoring to allow for implementation-specific hooks in 'arm-smmu-impl.c'

* for-joerg/arm-smmu/smmu-v3:
  Support for deferred TLB invalidation and batching of commands
  Rework ATC invalidation for ATS-enabled PCIe masters

1 files changed, 36 insertions, 8 deletions

diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c
index a2062d13584f..fd33cf5981d7 100644
--- a/drivers/iommu/qcom_iommu.c
+++ b/drivers/iommu/qcom_iommu.c
@@ -165,10 +165,32 @@ static void qcom_iommu_tlb_inv_range_nosync(unsigned long iova, size_t size,
 	}
 }
 
-static const struct iommu_gather_ops qcom_gather_ops = {
+static void qcom_iommu_tlb_flush_walk(unsigned long iova, size_t size,
+				      size_t granule, void *cookie)
+{
+	qcom_iommu_tlb_inv_range_nosync(iova, size, granule, false, cookie);
+	qcom_iommu_tlb_sync(cookie);
+}
+
+static void qcom_iommu_tlb_flush_leaf(unsigned long iova, size_t size,
+				      size_t granule, void *cookie)
+{
+	qcom_iommu_tlb_inv_range_nosync(iova, size, granule, true, cookie);
+	qcom_iommu_tlb_sync(cookie);
+}
+
+static void qcom_iommu_tlb_add_page(struct iommu_iotlb_gather *gather,
+				    unsigned long iova, size_t granule,
+				    void *cookie)
+{
+	qcom_iommu_tlb_inv_range_nosync(iova, granule, granule, true, cookie);
+}
+
+static const struct iommu_flush_ops qcom_flush_ops = {
 	.tlb_flush_all	= qcom_iommu_tlb_inv_context,
-	.tlb_add_flush	= qcom_iommu_tlb_inv_range_nosync,
-	.tlb_sync	= qcom_iommu_tlb_sync,
+	.tlb_flush_walk = qcom_iommu_tlb_flush_walk,
+	.tlb_flush_leaf = qcom_iommu_tlb_flush_leaf,
+	.tlb_add_page	= qcom_iommu_tlb_add_page,
 };
 
 static irqreturn_t qcom_iommu_fault(int irq, void *dev)
@@ -216,7 +238,7 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain,
 		.pgsize_bitmap	= qcom_iommu_ops.pgsize_bitmap,
 		.ias		= 32,
 		.oas		= 40,
-		.tlb		= &qcom_gather_ops,
+		.tlb		= &qcom_flush_ops,
 		.iommu_dev	= qcom_iommu->dev,
 	};
 
@@ -418,7 +440,7 @@ static int qcom_iommu_map(struct iommu_domain *domain, unsigned long iova,
 }
 
 static size_t qcom_iommu_unmap(struct iommu_domain *domain, unsigned long iova,
-			       size_t size)
+			       size_t size, struct iommu_iotlb_gather *gather)
 {
 	size_t ret;
 	unsigned long flags;
@@ -435,14 +457,14 @@ static size_t qcom_iommu_unmap(struct iommu_domain *domain, unsigned long iova,
 	 */
 	pm_runtime_get_sync(qcom_domain->iommu->dev);
 	spin_lock_irqsave(&qcom_domain->pgtbl_lock, flags);
-	ret = ops->unmap(ops, iova, size);
+	ret = ops->unmap(ops, iova, size, gather);
 	spin_unlock_irqrestore(&qcom_domain->pgtbl_lock, flags);
 	pm_runtime_put_sync(qcom_domain->iommu->dev);
 
 	return ret;
 }
 
-static void qcom_iommu_iotlb_sync(struct iommu_domain *domain)
+static void qcom_iommu_flush_iotlb_all(struct iommu_domain *domain)
 {
 	struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain);
 	struct io_pgtable *pgtable = container_of(qcom_domain->pgtbl_ops,
@@ -455,6 +477,12 @@ static void qcom_iommu_iotlb_sync(struct iommu_domain *domain)
 	pm_runtime_put_sync(qcom_domain->iommu->dev);
 }
 
+static void qcom_iommu_iotlb_sync(struct iommu_domain *domain,
+				  struct iommu_iotlb_gather *gather)
+{
+	qcom_iommu_flush_iotlb_all(domain);
+}
+
 static phys_addr_t qcom_iommu_iova_to_phys(struct iommu_domain *domain,
 					   dma_addr_t iova)
 {
@@ -582,7 +610,7 @@ static const struct iommu_ops qcom_iommu_ops = {
 	.detach_dev	= qcom_iommu_detach_dev,
 	.map		= qcom_iommu_map,
 	.unmap		= qcom_iommu_unmap,
-	.flush_iotlb_all = qcom_iommu_iotlb_sync,
+	.flush_iotlb_all = qcom_iommu_flush_iotlb_all,
 	.iotlb_sync	= qcom_iommu_iotlb_sync,
 	.iova_to_phys	= qcom_iommu_iova_to_phys,
 	.add_device	= qcom_iommu_add_device,