diff options
| -rw-r--r-- | drivers/iommu/mtk_iommu.c | 25 |
1 files changed, 3 insertions, 22 deletions
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 0e5f41fab86e..c2b7ed5d0f7c 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -101,8 +101,6 @@ #define MTK_M4U_TO_PORT(id) ((id) & 0x1f) struct mtk_iommu_domain { - spinlock_t pgtlock; /* lock for page table */ - struct io_pgtable_cfg cfg; struct io_pgtable_ops *iop; @@ -295,8 +293,6 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom) { struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); - spin_lock_init(&dom->pgtlock); - dom->cfg = (struct io_pgtable_cfg) { .quirks = IO_PGTABLE_QUIRK_ARM_NS | IO_PGTABLE_QUIRK_NO_PERMS | @@ -395,18 +391,13 @@ static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova, { struct mtk_iommu_domain *dom = to_mtk_domain(domain); struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); - unsigned long flags; - int ret; /* The "4GB mode" M4U physically can not use the lower remap of Dram. */ if (data->enable_4GB) paddr |= BIT_ULL(32); - spin_lock_irqsave(&dom->pgtlock, flags); - ret = dom->iop->map(dom->iop, iova, paddr, size, prot); - spin_unlock_irqrestore(&dom->pgtlock, flags); - - return ret; + /* Synchronize with the tlb_lock */ + return dom->iop->map(dom->iop, iova, paddr, size, prot); } static size_t mtk_iommu_unmap(struct iommu_domain *domain, @@ -414,14 +405,8 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain, struct iommu_iotlb_gather *gather) { struct mtk_iommu_domain *dom = to_mtk_domain(domain); - unsigned long flags; - size_t unmapsz; - - spin_lock_irqsave(&dom->pgtlock, flags); - unmapsz = dom->iop->unmap(dom->iop, iova, size, gather); - spin_unlock_irqrestore(&dom->pgtlock, flags); - return unmapsz; + return dom->iop->unmap(dom->iop, iova, size, gather); } static void mtk_iommu_flush_iotlb_all(struct iommu_domain *domain) @@ -447,13 +432,9 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain, { struct mtk_iommu_domain *dom = to_mtk_domain(domain); struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); - unsigned long flags; phys_addr_t pa; - spin_lock_irqsave(&dom->pgtlock, flags); pa = dom->iop->iova_to_phys(dom->iop, iova); - spin_unlock_irqrestore(&dom->pgtlock, flags); - if (data->enable_4GB && pa >= MTK_IOMMU_4GB_MODE_REMAP_BASE) pa &= ~BIT_ULL(32); |