diff options
author | Joerg Roedel <jroedel@suse.de> | 2019-08-20 12:09:43 +0300 |
---|---|---|
committer | Joerg Roedel <jroedel@suse.de> | 2019-08-20 12:09:43 +0300 |
commit | fe427e373d9fa300145c1a03d097f12b6a40fb89 (patch) | |
tree | e3d6fe5357b120265c7e97ad79e2ae0fac197b16 /drivers/iommu/arm-smmu.c | |
parent | 086f9efae7e96ac2c829d33ca3d513caa3bbb225 (diff) | |
parent | 3951c41af4a65ba418e6b1b973d398552bedb84f (diff) | |
download | linux-fe427e373d9fa300145c1a03d097f12b6a40fb89.tar.xz |
Merge branch 'for-joerg/batched-unmap' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into core
Diffstat (limited to 'drivers/iommu/arm-smmu.c')
-rw-r--r-- | drivers/iommu/arm-smmu.c | 103 |
1 files changed, 78 insertions, 25 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 64977c131ee6..5598d0ff71a8 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -248,10 +248,17 @@ 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); + void (*tlb_sync)(void *cookie); +}; + struct arm_smmu_domain { struct arm_smmu_device *smmu; struct io_pgtable_ops *pgtbl_ops; - const struct iommu_gather_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; @@ -533,7 +540,7 @@ static void arm_smmu_tlb_inv_range_nosync(unsigned long iova, size_t size, * On MMU-401 at least, the cost of firing off multiple TLBIVMIDs appears * almost negligible, but the benefit of getting the first one in as far ahead * of the sync as possible is significant, hence we don't just make this a - * no-op and set .tlb_sync to arm_smmu_inv_context_s2() as you might think. + * no-op and set .tlb_sync to arm_smmu_tlb_inv_context_s2() as you might think. */ static void arm_smmu_tlb_inv_vmid_nosync(unsigned long iova, size_t size, size_t granule, bool leaf, void *cookie) @@ -547,22 +554,67 @@ static void arm_smmu_tlb_inv_vmid_nosync(unsigned long iova, size_t size, writel_relaxed(smmu_domain->cfg.vmid, base + ARM_SMMU_GR0_TLBIVMID); } -static const struct iommu_gather_ops arm_smmu_s1_tlb_ops = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s1, - .tlb_add_flush = arm_smmu_tlb_inv_range_nosync, - .tlb_sync = arm_smmu_tlb_sync_context, +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; + + ops->tlb_inv_range(iova, size, granule, false, cookie); + ops->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_sync(cookie); +} + +static void arm_smmu_tlb_add_page(struct iommu_iotlb_gather *gather, + 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; + + ops->tlb_inv_range(iova, granule, granule, true, cookie); +} + +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_inv_range = arm_smmu_tlb_inv_range_nosync, + .tlb_sync = arm_smmu_tlb_sync_context, }; -static const struct iommu_gather_ops arm_smmu_s2_tlb_ops_v2 = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s2, - .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_inv_range = arm_smmu_tlb_inv_range_nosync, + .tlb_sync = arm_smmu_tlb_sync_context, }; -static const struct iommu_gather_ops arm_smmu_s2_tlb_ops_v1 = { - .tlb_flush_all = arm_smmu_tlb_inv_context_s2, - .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_inv_range = arm_smmu_tlb_inv_vmid_nosync, + .tlb_sync = arm_smmu_tlb_sync_vmid, }; static irqreturn_t arm_smmu_context_fault(int irq, void *dev) @@ -842,7 +894,7 @@ 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: /* @@ -862,9 +914,9 @@ 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; @@ -893,7 +945,7 @@ 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, }; @@ -1301,7 +1353,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova, } static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova, - size_t size) + size_t size, struct iommu_iotlb_gather *gather) { struct io_pgtable_ops *ops = to_smmu_domain(domain)->pgtbl_ops; struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu; @@ -1311,7 +1363,7 @@ 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; @@ -1322,21 +1374,22 @@ 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); } } -static void arm_smmu_iotlb_sync(struct iommu_domain *domain) +static void arm_smmu_iotlb_sync(struct iommu_domain *domain, + struct iommu_iotlb_gather *gather) { 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_sync(smmu_domain); arm_smmu_rpm_put(smmu); } } |