iommu/io-pgtable: Pass struct iommu_iotlb_gather to ->unmap()

Update the io-pgtable ->unmap() function to take an iommu_iotlb_gather
pointer as an argument, and update the callers as appropriate.

Signed-off-by: Will Deacon <will@kernel.org>

drivers/gpu/drm/panfrost/panfrost_mmu.c

@@ -222,7 +222,7 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo)
 		size_t unmapped_page;
 		size_t pgsize = get_pgsize(iova, len - unmapped_len);
 
-		unmapped_page = ops->unmap(ops, iova, pgsize);
+		unmapped_page = ops->unmap(ops, iova, pgsize, NULL);
 		if (!unmapped_page)
 			break;
 

drivers/iommu/arm-smmu-v3.c

@@ -2015,7 +2015,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova,
 	if (!ops)
 		return 0;
 
-	ret = ops->unmap(ops, iova, size);
+	ret = ops->unmap(ops, iova, size, gather);
 	if (ret && arm_smmu_atc_inv_domain(smmu_domain, 0, iova, size))
 		return 0;
 

drivers/iommu/arm-smmu.c

@@ -1362,7 +1362,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova,
 		return 0;
 
 	arm_smmu_rpm_get(smmu);
-	ret = ops->unmap(ops, iova, size);
+	ret = ops->unmap(ops, iova, size, gather);
 	arm_smmu_rpm_put(smmu);
 
 	return ret;

drivers/iommu/io-pgtable-arm-v7s.c

@@ -666,7 +666,7 @@ static size_t __arm_v7s_unmap(struct arm_v7s_io_pgtable *data,
 }
 
 static size_t arm_v7s_unmap(struct io_pgtable_ops *ops, unsigned long iova,
-			    size_t size)
+			    size_t size, struct iommu_iotlb_gather *gather)
 {
 	struct arm_v7s_io_pgtable *data = io_pgtable_ops_to_data(ops);
 
@@ -892,7 +892,7 @@ static int __init arm_v7s_do_selftests(void)
 	size = 1UL << __ffs(cfg.pgsize_bitmap);
 	while (i < loopnr) {
 		iova_start = i * SZ_16M;
-		if (ops->unmap(ops, iova_start + size, size) != size)
+		if (ops->unmap(ops, iova_start + size, size, NULL) != size)
 			return __FAIL(ops);
 
 		/* Remap of partial unmap */
@@ -910,7 +910,7 @@ static int __init arm_v7s_do_selftests(void)
 	for_each_set_bit(i, &cfg.pgsize_bitmap, BITS_PER_LONG) {
 		size = 1UL << i;
 
-		if (ops->unmap(ops, iova, size) != size)
+		if (ops->unmap(ops, iova, size, NULL) != size)
 			return __FAIL(ops);
 
 		if (ops->iova_to_phys(ops, iova + 42))

drivers/iommu/io-pgtable-arm.c

@@ -12,7 +12,6 @@
 #include <linux/atomic.h>
 #include <linux/bitops.h>
 #include <linux/io-pgtable.h>
-#include <linux/iommu.h>
 #include <linux/kernel.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
@@ -642,7 +641,7 @@ static size_t __arm_lpae_unmap(struct arm_lpae_io_pgtable *data,
 }
 
 static size_t arm_lpae_unmap(struct io_pgtable_ops *ops, unsigned long iova,
-			     size_t size)
+			     size_t size, struct iommu_iotlb_gather *gather)
 {
 	struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops);
 	arm_lpae_iopte *ptep = data->pgd;
@@ -1167,7 +1166,7 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
 
 		/* Partial unmap */
 		size = 1UL << __ffs(cfg->pgsize_bitmap);
-		if (ops->unmap(ops, SZ_1G + size, size) != size)
+		if (ops->unmap(ops, SZ_1G + size, size, NULL) != size)
 			return __FAIL(ops, i);
 
 		/* Remap of partial unmap */
@@ -1182,7 +1181,7 @@ static int __init arm_lpae_run_tests(struct io_pgtable_cfg *cfg)
 		for_each_set_bit(j, &cfg->pgsize_bitmap, BITS_PER_LONG) {
 			size = 1UL << j;
 
-			if (ops->unmap(ops, iova, size) != size)
+			if (ops->unmap(ops, iova, size, NULL) != size)
 				return __FAIL(ops, i);
 
 			if (ops->iova_to_phys(ops, iova + 42))

drivers/iommu/ipmmu-vmsa.c

@@ -737,7 +737,7 @@ static size_t ipmmu_unmap(struct iommu_domain *io_domain, unsigned long iova,
 {
 	struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
 
-	return domain->iop->unmap(domain->iop, iova, size);
+	return domain->iop->unmap(domain->iop, iova, size, gather);
 }
 
 static void ipmmu_flush_iotlb_all(struct iommu_domain *io_domain)

drivers/iommu/msm_iommu.c

@@ -523,7 +523,7 @@ static size_t msm_iommu_unmap(struct iommu_domain *domain, unsigned long iova,
 	unsigned long flags;
 
 	spin_lock_irqsave(&priv->pgtlock, flags);
-	len = priv->iop->unmap(priv->iop, iova, len);
+	len = priv->iop->unmap(priv->iop, iova, len, gather);
 	spin_unlock_irqrestore(&priv->pgtlock, flags);
 
 	return len;

drivers/iommu/mtk_iommu.c

@@ -400,7 +400,7 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain,
 	size_t unmapsz;
 
 	spin_lock_irqsave(&dom->pgtlock, flags);
-	unmapsz = dom->iop->unmap(dom->iop, iova, size);
+	unmapsz = dom->iop->unmap(dom->iop, iova, size, gather);
 	spin_unlock_irqrestore(&dom->pgtlock, flags);
 
 	return unmapsz;

drivers/iommu/qcom_iommu.c

@@ -455,7 +455,7 @@ 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);
 

include/linux/io-pgtable.h

@@ -1,7 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __IO_PGTABLE_H
 #define __IO_PGTABLE_H
+
 #include <linux/bitops.h>
+#include <linux/iommu.h>
 
 /*
  * Public API for use by IOMMU drivers
@@ -136,7 +138,7 @@ struct io_pgtable_ops {
 	int (*map)(struct io_pgtable_ops *ops, unsigned long iova,
 		   phys_addr_t paddr, size_t size, int prot);
 	size_t (*unmap)(struct io_pgtable_ops *ops, unsigned long iova,
-			size_t size);
+			size_t size, struct iommu_iotlb_gather *gather);
 	phys_addr_t (*iova_to_phys)(struct io_pgtable_ops *ops,
 				    unsigned long iova);
 };