[PATCH v3 01/22] iommu/amd: Make amd_iommu_completion_wait() non-static

[Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>]

This will be reused in a new iommufd.c file for nested translation.

Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
 drivers/iommu/amd/amd_iommu.h |  1 +
 drivers/iommu/amd/iommu.c     | 26 ++++++++++++--------------
 2 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h
index af720bf14914..9f961ccbe3b4 100644
--- a/drivers/iommu/amd/amd_iommu.h
+++ b/drivers/iommu/amd/amd_iommu.h
@@ -199,6 +199,7 @@ void amd_iommu_set_dte_v1(struct iommu_dev_data *dev_data,
 void amd_iommu_update_dte(struct amd_iommu *iommu,
 			  struct iommu_dev_data *dev_data,
 			  struct dev_table_entry *new);
+int amd_iommu_completion_wait(struct amd_iommu *iommu);
 
 static inline void
 amd_iommu_make_clear_dte(struct iommu_dev_data *dev_data, struct dev_table_entry *new)
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 84cad43dc188..4b4dd20ebec6 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -90,8 +90,6 @@ static int amd_iommu_set_dirty_tracking(struct iommu_domain *domain,
 
 static void clone_aliases(struct amd_iommu *iommu, struct device *dev);
 
-static int iommu_completion_wait(struct amd_iommu *iommu);
-
 /****************************************************************************
  *
  * Helper functions
@@ -216,7 +214,7 @@ void amd_iommu_update_dte(struct amd_iommu *iommu,
 	update_dte256(iommu, dev_data, new);
 	clone_aliases(iommu, dev_data->dev);
 	device_flush_dte(dev_data);
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 static void get_dte256(struct amd_iommu *iommu, struct iommu_dev_data *dev_data,
@@ -1449,7 +1447,7 @@ static u64 get_cmdsem_val(struct amd_iommu *iommu)
  * This function queues a completion wait command into the command
  * buffer of an IOMMU
  */
-static int iommu_completion_wait(struct amd_iommu *iommu)
+int amd_iommu_completion_wait(struct amd_iommu *iommu)
 {
 	struct iommu_cmd cmd;
 	unsigned long flags;
@@ -1487,7 +1485,7 @@ static void domain_flush_complete(struct protection_domain *domain)
 	 * We need to wait for completion of all commands.
 	 */
 	 xa_for_each(&domain->iommu_array, i, pdom_iommu_info)
-		iommu_completion_wait(pdom_iommu_info->iommu);
+		amd_iommu_completion_wait(pdom_iommu_info->iommu);
 }
 
 static int iommu_flush_dte(struct amd_iommu *iommu, u16 devid)
@@ -1505,7 +1503,7 @@ static void iommu_flush_dte_sync(struct amd_iommu *iommu, u16 devid)
 
 	ret = iommu_flush_dte(iommu, devid);
 	if (!ret)
-		iommu_completion_wait(iommu);
+		amd_iommu_completion_wait(iommu);
 }
 
 static void amd_iommu_flush_dte_all(struct amd_iommu *iommu)
@@ -1516,7 +1514,7 @@ static void amd_iommu_flush_dte_all(struct amd_iommu *iommu)
 	for (devid = 0; devid <= last_bdf; ++devid)
 		iommu_flush_dte(iommu, devid);
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 /*
@@ -1535,7 +1533,7 @@ static void amd_iommu_flush_tlb_all(struct amd_iommu *iommu)
 		iommu_queue_command(iommu, &cmd);
 	}
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 static void amd_iommu_flush_tlb_domid(struct amd_iommu *iommu, u32 dom_id)
@@ -1546,7 +1544,7 @@ static void amd_iommu_flush_tlb_domid(struct amd_iommu *iommu, u32 dom_id)
 			      dom_id, IOMMU_NO_PASID, false);
 	iommu_queue_command(iommu, &cmd);
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 static int iommu_flush_pages_v1_hdom_ids(struct protection_domain *pdom, u64 address, size_t size)
@@ -1582,7 +1580,7 @@ static void amd_iommu_flush_all(struct amd_iommu *iommu)
 	build_inv_all(&cmd);
 
 	iommu_queue_command(iommu, &cmd);
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 static void iommu_flush_irt(struct amd_iommu *iommu, u16 devid)
@@ -1605,7 +1603,7 @@ static void amd_iommu_flush_irt_all(struct amd_iommu *iommu)
 	for (devid = 0; devid <= last_bdf; devid++)
 		iommu_flush_irt(iommu, devid);
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 void amd_iommu_flush_all_caches(struct amd_iommu *iommu)
@@ -1841,7 +1839,7 @@ void amd_iommu_dev_flush_pasid_pages(struct iommu_dev_data *dev_data,
 	if (dev_data->ats_enabled)
 		device_flush_iotlb(dev_data, address, size, pasid, true);
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 }
 
 static void dev_flush_pasid_all(struct iommu_dev_data *dev_data,
@@ -2495,7 +2493,7 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev)
 		goto out_err;
 	}
 
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 
 	if (FEATURE_NUM_INT_REMAP_SUP_2K(amd_iommu_efr2))
 		dev_data->max_irqs = MAX_IRQS_PER_TABLE_2K;
@@ -3392,7 +3390,7 @@ static struct irq_remap_table *alloc_irq_table(struct amd_iommu *iommu,
 		set_remap_table_entry(iommu, alias, table);
 
 out_wait:
-	iommu_completion_wait(iommu);
+	amd_iommu_completion_wait(iommu);
 
 out_unlock:
 	spin_unlock_irqrestore(&iommu_table_lock, flags);
-- 
2.34.1