From: JunBin Li lijunbin4@huawei.com

virtcca inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IADD42

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virtCCA feature

Signed-off-by: JunBin Li lijunbin4@huawei.com

--- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 22 +++++++++++++++++++++ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 +++++++++++++ include/linux/iommu.h | 5 +++++ 3 files changed, 41 insertions(+)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 87f9bed39..1d89353d1 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3284,6 +3284,24 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid) arm_smmu_sva_remove_dev_pasid(domain, dev, pasid); }

+#ifdef CONFIG_CVM_HOST +int arm_smmu_enable_secure(struct iommu_domain *domain) +{ + int ret = 0; + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + + mutex_lock(&smmu_domain->init_mutex); + if (smmu_domain->smmu) { + ret = -EPERM; + } else { + smmu_domain->secure = true; + } + mutex_unlock(&smmu_domain->init_mutex); + + return ret; +} +#endif + static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, .domain_alloc = arm_smmu_domain_alloc, @@ -3299,6 +3317,10 @@ static struct iommu_ops arm_smmu_ops = { .def_domain_type = arm_smmu_def_domain_type, .pgsize_bitmap = -1UL, /* Restricted during device attach */ .owner = THIS_MODULE, +#ifdef CONFIG_CVM_HOST + .iommu_enable_secure = arm_smmu_enable_secure, +#endif + .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = arm_smmu_attach_dev, .map_pages = arm_smmu_map_pages, diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 859d21729..0f2acb4ed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -625,6 +625,9 @@ struct arm_smmu_strtab_l1_desc {

struct arm_smmu_ste *l2ptr; dma_addr_t l2ptr_dma; +#ifdef CONFIG_CVM_HOST + bool is_sync; +#endif };

struct arm_smmu_ctx_desc { @@ -750,6 +753,12 @@ struct arm_smmu_device { struct mutex streams_mutex;

bool bypass; +#ifdef CONFIG_CVM_HOST + int s_evtq_irq; + int s_gerr_irq; + resource_size_t ioaddr; + uint64_t id; +#endif };

struct arm_smmu_stream { @@ -802,6 +811,11 @@ struct arm_smmu_domain { spinlock_t devices_lock;

struct list_head mmu_notifiers; +#ifdef CONFIG_CVM_HOST + bool secure; + struct list_head node; + struct kvm *kvm; +#endif };

static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d70dd0d0..9e510e179 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -635,7 +635,12 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *default_domain;

+#ifdef CONFIG_CVM_HOST + KABI_USE(1, int (*iommu_enable_secure)(struct iommu_domain *domain)); +#else KABI_RESERVE(1) +#endif + KABI_RESERVE(2) KABI_RESERVE(3) KABI_RESERVE(4)