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From: Robin Murphy <robin.murphy@arm.com>
To: will@kernel.org
Cc: iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/4] iommu/arm-smmu: Remove "leaf" indirection
Date: Wed, 18 Sep 2019 17:17:49 +0100	[thread overview]
Message-ID: <4d401834469adc87283a173143fa5c6ede2a960a.1568820087.git.robin.murphy@arm.com> (raw)
In-Reply-To: <cover.1568820087.git.robin.murphy@arm.com>

Now that the "leaf" flag is no longer part of an external interface,
there's no need to use it to infer a register offset at runtime when
we can just as easily encode the offset directly in its place.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/iommu/arm-smmu.c | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index f2b81b1ce224..b5b4cd4cae19 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -312,18 +312,16 @@ static void arm_smmu_tlb_inv_context_s2(void *cookie)
 }
 
 static void arm_smmu_tlb_inv_range_s1(unsigned long iova, size_t size,
-				      size_t granule, void *cookie, bool leaf)
+				      size_t granule, void *cookie, int reg)
 {
 	struct arm_smmu_domain *smmu_domain = cookie;
 	struct arm_smmu_device *smmu = smmu_domain->smmu;
 	struct arm_smmu_cfg *cfg = &smmu_domain->cfg;
-	int reg, idx = cfg->cbndx;
+	int idx = cfg->cbndx;
 
 	if (smmu->features & ARM_SMMU_FEAT_COHERENT_WALK)
 		wmb();
 
-	reg = leaf ? ARM_SMMU_CB_S1_TLBIVAL : ARM_SMMU_CB_S1_TLBIVA;
-
 	if (cfg->fmt != ARM_SMMU_CTX_FMT_AARCH64) {
 		iova = (iova >> 12) << 12;
 		iova |= cfg->asid;
@@ -342,16 +340,15 @@ static void arm_smmu_tlb_inv_range_s1(unsigned long iova, size_t size,
 }
 
 static void arm_smmu_tlb_inv_range_s2(unsigned long iova, size_t size,
-				      size_t granule, void *cookie, bool leaf)
+				      size_t granule, void *cookie, int reg)
 {
 	struct arm_smmu_domain *smmu_domain = cookie;
 	struct arm_smmu_device *smmu = smmu_domain->smmu;
-	int reg, idx = smmu_domain->cfg.cbndx;
+	int idx = smmu_domain->cfg.cbndx;
 
 	if (smmu->features & ARM_SMMU_FEAT_COHERENT_WALK)
 		wmb();
 
-	reg = leaf ? ARM_SMMU_CB_S2_TLBIIPAS2L : ARM_SMMU_CB_S2_TLBIIPAS2;
 	iova >>= 12;
 	do {
 		if (smmu_domain->cfg.fmt == ARM_SMMU_CTX_FMT_AARCH64)
@@ -365,14 +362,16 @@ static void arm_smmu_tlb_inv_range_s2(unsigned long iova, size_t size,
 static void arm_smmu_tlb_inv_walk_s1(unsigned long iova, size_t size,
 				     size_t granule, void *cookie)
 {
-	arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie, false);
+	arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie,
+				  ARM_SMMU_CB_S1_TLBIVA);
 	arm_smmu_tlb_sync_context(cookie);
 }
 
 static void arm_smmu_tlb_inv_leaf_s1(unsigned long iova, size_t size,
 				     size_t granule, void *cookie)
 {
-	arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie, true);
+	arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie,
+				  ARM_SMMU_CB_S1_TLBIVAL);
 	arm_smmu_tlb_sync_context(cookie);
 }
 
@@ -380,20 +379,23 @@ static void arm_smmu_tlb_add_page_s1(struct iommu_iotlb_gather *gather,
 				     unsigned long iova, size_t granule,
 				     void *cookie)
 {
-	arm_smmu_tlb_inv_range_s1(iova, granule, granule, cookie, true);
+	arm_smmu_tlb_inv_range_s1(iova, granule, granule, cookie,
+				  ARM_SMMU_CB_S1_TLBIVAL);
 }
 
 static void arm_smmu_tlb_inv_walk_s2(unsigned long iova, size_t size,
 				     size_t granule, void *cookie)
 {
-	arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie, false);
+	arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie,
+				  ARM_SMMU_CB_S2_TLBIIPAS2);
 	arm_smmu_tlb_sync_context(cookie);
 }
 
 static void arm_smmu_tlb_inv_leaf_s2(unsigned long iova, size_t size,
 				     size_t granule, void *cookie)
 {
-	arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie, true);
+	arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie,
+				  ARM_SMMU_CB_S2_TLBIIPAS2L);
 	arm_smmu_tlb_sync_context(cookie);
 }
 
@@ -401,7 +403,8 @@ static void arm_smmu_tlb_add_page_s2(struct iommu_iotlb_gather *gather,
 				     unsigned long iova, size_t granule,
 				     void *cookie)
 {
-	arm_smmu_tlb_inv_range_s2(iova, granule, granule, cookie, true);
+	arm_smmu_tlb_inv_range_s2(iova, granule, granule, cookie,
+				  ARM_SMMU_CB_S2_TLBIIPAS2L);
 }
 
 static void arm_smmu_tlb_inv_any_s2_v1(unsigned long iova, size_t size,
-- 
2.21.0.dirty

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  parent reply	other threads:[~2019-09-18 16:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-18 16:17 [PATCH 0/4] iommu/arm-smmu: Remove arm_smmu_flush_ops Robin Murphy
2019-09-18 16:17 ` [PATCH 1/4] iommu/arm-smmu: Remove .tlb_inv_range indirection Robin Murphy
2019-09-18 16:17 ` Robin Murphy [this message]
2019-09-18 16:17 ` [PATCH 3/4] iommu/arm-smmu: Move .tlb_sync method to implementation Robin Murphy
2019-09-18 16:17 ` [PATCH 4/4] iommu/arm-smmu: Remove arm_smmu_flush_ops Robin Murphy
2019-09-30 11:21 ` [PATCH 0/4] " Will Deacon

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