diff options
author | Will Deacon | 2019-07-02 16:44:41 +0100 |
---|---|---|
committer | Will Deacon | 2019-07-29 17:22:57 +0100 |
commit | abfd6fe0cd535d31ee83b668be6eb59ce6a8469d (patch) | |
tree | 3434e458e2191d71cb8d6211209044d8e3560bcd /drivers/iommu | |
parent | 10b7a7d912697afd681a0bcfced9e05543aded35 (diff) |
iommu/io-pgtable: Replace ->tlb_add_flush() with ->tlb_add_page()
The ->tlb_add_flush() callback in the io-pgtable API now looks a bit
silly:
- It takes a size and a granule, which are always the same
- It takes a 'bool leaf', which is always true
- It only ever flushes a single page
With that in mind, replace it with an optional ->tlb_add_page() callback
that drops the useless parameters.
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
-rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 8 | ||||
-rw-r--r-- | drivers/iommu/arm-smmu.c | 88 | ||||
-rw-r--r-- | drivers/iommu/io-pgtable-arm-v7s.c | 12 | ||||
-rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 11 | ||||
-rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 7 | ||||
-rw-r--r-- | drivers/iommu/msm_iommu.c | 7 | ||||
-rw-r--r-- | drivers/iommu/mtk_iommu.c | 8 | ||||
-rw-r--r-- | drivers/iommu/qcom_iommu.c | 8 |
8 files changed, 94 insertions, 55 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 79819b003b07..98c90a1b4b22 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1603,6 +1603,12 @@ static void arm_smmu_tlb_inv_range_nosync(unsigned long iova, size_t size, } while (size -= granule); } +static void arm_smmu_tlb_inv_page_nosync(unsigned long iova, size_t granule, + void *cookie) +{ + arm_smmu_tlb_inv_range_nosync(iova, granule, granule, true, cookie); +} + static void arm_smmu_tlb_inv_walk(unsigned long iova, size_t size, size_t granule, void *cookie) { @@ -1627,7 +1633,7 @@ static const struct iommu_flush_ops arm_smmu_flush_ops = { .tlb_flush_all = arm_smmu_tlb_inv_context, .tlb_flush_walk = arm_smmu_tlb_inv_walk, .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, - .tlb_add_flush = arm_smmu_tlb_inv_range_nosync, + .tlb_add_page = arm_smmu_tlb_inv_page_nosync, .tlb_sync = arm_smmu_tlb_sync, }; diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index e9f01b860ae3..f056164a94b0 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -248,10 +248,16 @@ enum arm_smmu_domain_stage { ARM_SMMU_DOMAIN_BYPASS, }; +struct arm_smmu_flush_ops { + struct iommu_flush_ops tlb; + void (*tlb_inv_range)(unsigned long iova, size_t size, size_t granule, + bool leaf, void *cookie) +}; + struct arm_smmu_domain { struct arm_smmu_device *smmu; struct io_pgtable_ops *pgtbl_ops; - const struct iommu_flush_ops *tlb_ops; + const struct arm_smmu_flush_ops *flush_ops; struct arm_smmu_cfg cfg; enum arm_smmu_domain_stage stage; bool non_strict; @@ -551,42 +557,62 @@ static void arm_smmu_tlb_inv_walk(unsigned long iova, size_t size, size_t granule, void *cookie) { struct arm_smmu_domain *smmu_domain = cookie; + const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops; - smmu_domain->tlb_ops->tlb_add_flush(iova, size, granule, false, cookie); - smmu_domain->tlb_ops->tlb_sync(cookie); + ops->tlb_inv_range(iova, size, granule, false, cookie); + ops->tlb.tlb_sync(cookie); } static void arm_smmu_tlb_inv_leaf(unsigned long iova, size_t size, size_t granule, void *cookie) { struct arm_smmu_domain *smmu_domain = cookie; + const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops; + + ops->tlb_inv_range(iova, size, granule, true, cookie); + ops->tlb.tlb_sync(cookie); +} + +static void arm_smmu_tlb_add_page(unsigned long iova, size_t granule, + void *cookie) +{ + struct arm_smmu_domain *smmu_domain = cookie; + const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops; - smmu_domain->tlb_ops->tlb_add_flush(iova, size, granule, true, cookie); - smmu_domain->tlb_ops->tlb_sync(cookie); + ops->tlb_inv_range(iova, granule, granule, true, cookie); } -static const struct iommu_flush_ops arm_smmu_s1_tlb_ops = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s1, - .tlb_flush_walk = arm_smmu_tlb_inv_walk, - .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, - .tlb_add_flush = arm_smmu_tlb_inv_range_nosync, - .tlb_sync = arm_smmu_tlb_sync_context, +static const struct arm_smmu_flush_ops arm_smmu_s1_tlb_ops = { + .tlb = { + .tlb_flush_all = arm_smmu_tlb_inv_context_s1, + .tlb_flush_walk = arm_smmu_tlb_inv_walk, + .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, + .tlb_add_page = arm_smmu_tlb_add_page, + .tlb_sync = arm_smmu_tlb_sync_context, + }, + .tlb_inv_range = arm_smmu_tlb_inv_range_nosync, }; -static const struct iommu_flush_ops arm_smmu_s2_tlb_ops_v2 = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s2, - .tlb_flush_walk = arm_smmu_tlb_inv_walk, - .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, - .tlb_add_flush = arm_smmu_tlb_inv_range_nosync, - .tlb_sync = arm_smmu_tlb_sync_context, +static const struct arm_smmu_flush_ops arm_smmu_s2_tlb_ops_v2 = { + .tlb = { + .tlb_flush_all = arm_smmu_tlb_inv_context_s2, + .tlb_flush_walk = arm_smmu_tlb_inv_walk, + .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, + .tlb_add_page = arm_smmu_tlb_add_page, + .tlb_sync = arm_smmu_tlb_sync_context, + }, + .tlb_inv_range = arm_smmu_tlb_inv_range_nosync, }; -static const struct iommu_flush_ops arm_smmu_s2_tlb_ops_v1 = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s2, - .tlb_flush_walk = arm_smmu_tlb_inv_walk, - .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, - .tlb_add_flush = arm_smmu_tlb_inv_vmid_nosync, - .tlb_sync = arm_smmu_tlb_sync_vmid, +static const struct arm_smmu_flush_ops arm_smmu_s2_tlb_ops_v1 = { + .tlb = { + .tlb_flush_all = arm_smmu_tlb_inv_context_s2, + .tlb_flush_walk = arm_smmu_tlb_inv_walk, + .tlb_flush_leaf = arm_smmu_tlb_inv_leaf, + .tlb_add_page = arm_smmu_tlb_add_page, + .tlb_sync = arm_smmu_tlb_sync_vmid, + }, + .tlb_inv_range = arm_smmu_tlb_inv_vmid_nosync, }; static irqreturn_t arm_smmu_context_fault(int irq, void *dev) @@ -866,7 +892,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, ias = min(ias, 32UL); oas = min(oas, 32UL); } - smmu_domain->tlb_ops = &arm_smmu_s1_tlb_ops; + smmu_domain->flush_ops = &arm_smmu_s1_tlb_ops; break; case ARM_SMMU_DOMAIN_NESTED: /* @@ -886,9 +912,9 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, oas = min(oas, 40UL); } if (smmu->version == ARM_SMMU_V2) - smmu_domain->tlb_ops = &arm_smmu_s2_tlb_ops_v2; + smmu_domain->flush_ops = &arm_smmu_s2_tlb_ops_v2; else - smmu_domain->tlb_ops = &arm_smmu_s2_tlb_ops_v1; + smmu_domain->flush_ops = &arm_smmu_s2_tlb_ops_v1; break; default: ret = -EINVAL; @@ -917,7 +943,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, .ias = ias, .oas = oas, .coherent_walk = smmu->features & ARM_SMMU_FEAT_COHERENT_WALK, - .tlb = smmu_domain->tlb_ops, + .tlb = &smmu_domain->flush_ops->tlb, .iommu_dev = smmu->dev, }; @@ -1346,9 +1372,9 @@ static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain) struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; - if (smmu_domain->tlb_ops) { + if (smmu_domain->flush_ops) { arm_smmu_rpm_get(smmu); - smmu_domain->tlb_ops->tlb_flush_all(smmu_domain); + smmu_domain->flush_ops->tlb.tlb_flush_all(smmu_domain); arm_smmu_rpm_put(smmu); } } @@ -1359,9 +1385,9 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain, struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_device *smmu = smmu_domain->smmu; - if (smmu_domain->tlb_ops) { + if (smmu_domain->flush_ops) { arm_smmu_rpm_get(smmu); - smmu_domain->tlb_ops->tlb_sync(smmu_domain); + smmu_domain->flush_ops->tlb.tlb_sync(smmu_domain); arm_smmu_rpm_put(smmu); } } diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index 8d4914fe73bc..b3f975c95f76 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -584,7 +584,7 @@ static size_t arm_v7s_split_blk_unmap(struct arm_v7s_io_pgtable *data, return __arm_v7s_unmap(data, iova, size, 2, tablep); } - io_pgtable_tlb_add_flush(&data->iop, iova, size, size, true); + io_pgtable_tlb_add_page(&data->iop, iova, size); return size; } @@ -647,8 +647,7 @@ static size_t __arm_v7s_unmap(struct arm_v7s_io_pgtable *data, */ smp_wmb(); } else { - io_pgtable_tlb_add_flush(iop, iova, blk_size, - blk_size, true); + io_pgtable_tlb_add_page(iop, iova, blk_size); } iova += blk_size; } @@ -809,10 +808,9 @@ static void dummy_tlb_flush(unsigned long iova, size_t size, size_t granule, WARN_ON(!(size & cfg_cookie->pgsize_bitmap)); } -static void dummy_tlb_add_flush(unsigned long iova, size_t size, - size_t granule, bool leaf, void *cookie) +static void dummy_tlb_add_page(unsigned long iova, size_t granule, void *cookie) { - dummy_tlb_flush(iova, size, granule, cookie); + dummy_tlb_flush(iova, granule, granule, cookie); } static void dummy_tlb_sync(void *cookie) @@ -824,7 +822,7 @@ static const struct iommu_flush_ops dummy_tlb_ops = { .tlb_flush_all = dummy_tlb_flush_all, .tlb_flush_walk = dummy_tlb_flush, .tlb_flush_leaf = dummy_tlb_flush, - .tlb_add_flush = dummy_tlb_add_flush, + .tlb_add_page = dummy_tlb_add_page, .tlb_sync = dummy_tlb_sync, }; diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index b58338c86323..a5c0db01533e 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -582,7 +582,7 @@ static size_t arm_lpae_split_blk_unmap(struct arm_lpae_io_pgtable *data, tablep = iopte_deref(pte, data); } else if (unmap_idx >= 0) { - io_pgtable_tlb_add_flush(&data->iop, iova, size, size, true); + io_pgtable_tlb_add_page(&data->iop, iova, size); return size; } @@ -623,7 +623,7 @@ static size_t __arm_lpae_unmap(struct arm_lpae_io_pgtable *data, */ smp_wmb(); } else { - io_pgtable_tlb_add_flush(iop, iova, size, size, true); + io_pgtable_tlb_add_page(iop, iova, size); } return size; @@ -1075,10 +1075,9 @@ static void dummy_tlb_flush(unsigned long iova, size_t size, size_t granule, WARN_ON(!(size & cfg_cookie->pgsize_bitmap)); } -static void dummy_tlb_add_flush(unsigned long iova, size_t size, - size_t granule, bool leaf, void *cookie) +static void dummy_tlb_add_page(unsigned long iova, size_t granule, void *cookie) { - dummy_tlb_flush(iova, size, granule, cookie); + dummy_tlb_flush(iova, granule, granule, cookie); } static void dummy_tlb_sync(void *cookie) @@ -1090,7 +1089,7 @@ static const struct iommu_flush_ops dummy_tlb_ops __initconst = { .tlb_flush_all = dummy_tlb_flush_all, .tlb_flush_walk = dummy_tlb_flush, .tlb_flush_leaf = dummy_tlb_flush, - .tlb_add_flush = dummy_tlb_add_flush, + .tlb_add_page = dummy_tlb_add_page, .tlb_sync = dummy_tlb_sync, }; diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 9cc7bcb7e39d..c4da271af90e 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -367,17 +367,10 @@ static void ipmmu_tlb_flush(unsigned long iova, size_t size, ipmmu_tlb_flush_all(cookie); } -static void ipmmu_tlb_add_flush(unsigned long iova, size_t size, - size_t granule, bool leaf, void *cookie) -{ - /* The hardware doesn't support selective TLB flush. */ -} - static const struct iommu_flush_ops ipmmu_flush_ops = { .tlb_flush_all = ipmmu_tlb_flush_all, .tlb_flush_walk = ipmmu_tlb_flush, .tlb_flush_leaf = ipmmu_tlb_flush, - .tlb_add_flush = ipmmu_tlb_add_flush, .tlb_sync = ipmmu_tlb_flush_all, }; diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 64132093751a..2cd83295a841 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -192,11 +192,16 @@ static void __flush_iotlb_leaf(unsigned long iova, size_t size, __flush_iotlb_sync(cookie); } +static void __flush_iotlb_page(unsigned long iova, size_t granule, void *cookie) +{ + __flush_iotlb_range(iova, granule, granule, true, cookie); +} + static const struct iommu_flush_ops msm_iommu_flush_ops = { .tlb_flush_all = __flush_iotlb, .tlb_flush_walk = __flush_iotlb_walk, .tlb_flush_leaf = __flush_iotlb_leaf, - .tlb_add_flush = __flush_iotlb_range, + .tlb_add_page = __flush_iotlb_page, .tlb_sync = __flush_iotlb_sync, }; diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 85a7176bf9ae..a0b4b4dc4b90 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -202,11 +202,17 @@ static void mtk_iommu_tlb_flush_leaf(unsigned long iova, size_t size, mtk_iommu_tlb_sync(cookie); } +static void mtk_iommu_tlb_flush_page_nosync(unsigned long iova, size_t granule, + void *cookie) +{ + mtk_iommu_tlb_add_flush_nosync(iova, granule, granule, true, cookie); +} + static const struct iommu_flush_ops mtk_iommu_flush_ops = { .tlb_flush_all = mtk_iommu_tlb_flush_all, .tlb_flush_walk = mtk_iommu_tlb_flush_walk, .tlb_flush_leaf = mtk_iommu_tlb_flush_leaf, - .tlb_add_flush = mtk_iommu_tlb_add_flush_nosync, + .tlb_add_page = mtk_iommu_tlb_flush_page_nosync, .tlb_sync = mtk_iommu_tlb_sync, }; diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index 643079e52e69..7d8411dee4cf 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -178,11 +178,17 @@ static void qcom_iommu_tlb_flush_leaf(unsigned long iova, size_t size, qcom_iommu_tlb_sync(cookie); } +static void qcom_iommu_tlb_add_page(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_flush_walk = qcom_iommu_tlb_flush_walk, .tlb_flush_leaf = qcom_iommu_tlb_flush_leaf, - .tlb_add_flush = qcom_iommu_tlb_inv_range_nosync, + .tlb_add_page = qcom_iommu_tlb_add_page, .tlb_sync = qcom_iommu_tlb_sync, }; 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