From 56f8af5e9d38f120cba2c2adb0786fa2dbc901a4 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 2 Jul 2019 16:44:06 +0100 Subject: iommu: Pass struct iommu_iotlb_gather to ->unmap() and ->iotlb_sync() To allow IOMMU drivers to batch up TLB flushing operations and postpone them until ->iotlb_sync() is called, extend the prototypes for the ->unmap() and ->iotlb_sync() IOMMU ops callbacks to take a pointer to the current iommu_iotlb_gather structure. All affected IOMMU drivers are updated, but there should be no functional change since the extra parameter is ignored for now. Signed-off-by: Will Deacon --- drivers/iommu/ipmmu-vmsa.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers/iommu/ipmmu-vmsa.c') diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 2c14a2c65b22..a9332b893ce2 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -733,14 +733,14 @@ static int ipmmu_map(struct iommu_domain *io_domain, unsigned long iova, } static size_t ipmmu_unmap(struct iommu_domain *io_domain, unsigned long iova, - size_t size) + size_t size, struct iommu_iotlb_gather *gather) { struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain); return domain->iop->unmap(domain->iop, iova, size); } -static void ipmmu_iotlb_sync(struct iommu_domain *io_domain) +static void ipmmu_flush_iotlb_all(struct iommu_domain *io_domain) { struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain); @@ -748,6 +748,12 @@ static void ipmmu_iotlb_sync(struct iommu_domain *io_domain) ipmmu_tlb_flush_all(domain); } +static void ipmmu_iotlb_sync(struct iommu_domain *io_domain, + struct iommu_iotlb_gather *gather) +{ + ipmmu_flush_iotlb_all(io_domain); +} + static phys_addr_t ipmmu_iova_to_phys(struct iommu_domain *io_domain, dma_addr_t iova) { @@ -957,7 +963,7 @@ static const struct iommu_ops ipmmu_ops = { .detach_dev = ipmmu_detach_device, .map = ipmmu_map, .unmap = ipmmu_unmap, - .flush_iotlb_all = ipmmu_iotlb_sync, + .flush_iotlb_all = ipmmu_flush_iotlb_all, .iotlb_sync = ipmmu_iotlb_sync, .iova_to_phys = ipmmu_iova_to_phys, .add_device = ipmmu_add_device, -- cgit v1.2.3