diff options
Diffstat (limited to 'drivers/iommu')
-rw-r--r-- | drivers/iommu/amd/init.c | 2 | ||||
-rw-r--r-- | drivers/iommu/amd/iommu.c | 7 | ||||
-rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 13 | ||||
-rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 2 | ||||
-rw-r--r-- | drivers/iommu/arm/arm-smmu/arm-smmu.c | 5 | ||||
-rw-r--r-- | drivers/iommu/dma-iommu.c | 7 | ||||
-rw-r--r-- | drivers/iommu/intel/iommu.c | 2 | ||||
-rw-r--r-- | drivers/iommu/msm_iommu.c | 11 | ||||
-rw-r--r-- | drivers/iommu/mtk_iommu.c | 30 | ||||
-rw-r--r-- | drivers/iommu/mtk_iommu.h | 2 | ||||
-rw-r--r-- | drivers/iommu/mtk_iommu_v1.c | 7 |
11 files changed, 60 insertions, 28 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 204ed33c56dc..9a7742732d73 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -84,7 +84,7 @@ #define ACPI_DEVFLAG_LINT1 0x80 #define ACPI_DEVFLAG_ATSDIS 0x10000000 -#define LOOP_TIMEOUT 100000 +#define LOOP_TIMEOUT 2000000 /* * ACPI table definitions * diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index f46eb7397021..e23e70af718f 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1816,17 +1816,10 @@ void amd_iommu_domain_update(struct protection_domain *domain) amd_iommu_domain_flush_complete(domain); } -static void __init amd_iommu_init_dma_ops(void) -{ - swiotlb = (iommu_default_passthrough() || sme_me_mask) ? 1 : 0; -} - int __init amd_iommu_init_api(void) { int err; - amd_iommu_init_dma_ops(); - err = bus_set_iommu(&pci_bus_type, &amd_iommu_ops); if (err) return err; diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index f763c1430d15..e2e80eb2840c 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -6,6 +6,7 @@ #include <linux/mm.h> #include <linux/mmu_context.h> #include <linux/mmu_notifier.h> +#include <linux/sched/mm.h> #include <linux/slab.h> #include "arm-smmu-v3.h" @@ -96,9 +97,14 @@ static struct arm_smmu_ctx_desc *arm_smmu_alloc_shared_cd(struct mm_struct *mm) struct arm_smmu_ctx_desc *cd; struct arm_smmu_ctx_desc *ret = NULL; + /* Don't free the mm until we release the ASID */ + mmgrab(mm); + asid = arm64_mm_context_get(mm); - if (!asid) - return ERR_PTR(-ESRCH); + if (!asid) { + err = -ESRCH; + goto out_drop_mm; + } cd = kzalloc(sizeof(*cd), GFP_KERNEL); if (!cd) { @@ -165,6 +171,8 @@ out_free_cd: kfree(cd); out_put_context: arm64_mm_context_put(mm); +out_drop_mm: + mmdrop(mm); return err < 0 ? ERR_PTR(err) : ret; } @@ -173,6 +181,7 @@ static void arm_smmu_free_shared_cd(struct arm_smmu_ctx_desc *cd) if (arm_smmu_free_asid(cd)) { /* Unpin ASID */ arm64_mm_context_put(cd->mm); + mmdrop(cd->mm); kfree(cd); } } 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 430315135cff..79edfdca6607 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3786,6 +3786,8 @@ static int arm_smmu_device_probe(struct platform_device *pdev) /* Base address */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; if (resource_size(res) < arm_smmu_resource_size(smmu)) { dev_err(dev, "MMIO region too small (%pr)\n", res); return -EINVAL; diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 4bc75c4ce402..324e8f32962a 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -2090,11 +2090,10 @@ static int arm_smmu_device_probe(struct platform_device *pdev) if (err) return err; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ioaddr = res->start; - smmu->base = devm_ioremap_resource(dev, res); + smmu->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(smmu->base)) return PTR_ERR(smmu->base); + ioaddr = res->start; /* * The resource size should effectively match the value of SMMU_TOP; * stash that temporarily until we know PAGESIZE to validate it with. diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 276b6fcc80ad..48c6f7ff4aef 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -619,6 +619,7 @@ static struct page **__iommu_dma_alloc_noncontiguous(struct device *dev, unsigned int count, min_size, alloc_sizes = domain->pgsize_bitmap; struct page **pages; dma_addr_t iova; + ssize_t ret; if (static_branch_unlikely(&iommu_deferred_attach_enabled) && iommu_deferred_attach(dev, domain)) @@ -656,8 +657,8 @@ static struct page **__iommu_dma_alloc_noncontiguous(struct device *dev, arch_dma_prep_coherent(sg_page(sg), sg->length); } - if (iommu_map_sg_atomic(domain, iova, sgt->sgl, sgt->orig_nents, ioprot) - < size) + ret = iommu_map_sg_atomic(domain, iova, sgt->sgl, sgt->orig_nents, ioprot); + if (ret < 0 || ret < size) goto out_free_sg; sgt->sgl->dma_address = iova; @@ -1054,7 +1055,7 @@ static int iommu_dma_map_sg(struct device *dev, struct scatterlist *sg, * implementation - it knows better than we do. */ ret = iommu_map_sg_atomic(domain, iova, sg, nents, prot); - if (ret < iova_len) + if (ret < 0 || ret < iova_len) goto out_free_iova; return __finalise_sg(dev, sg, nents, iova); diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 91a5c75966f3..a1ffb3d6d901 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5728,7 +5728,7 @@ static void quirk_igfx_skip_te_disable(struct pci_dev *dev) ver = (dev->device >> 8) & 0xff; if (ver != 0x45 && ver != 0x46 && ver != 0x4c && ver != 0x4e && ver != 0x8a && ver != 0x98 && - ver != 0x9a) + ver != 0x9a && ver != 0xa7) return; if (risky_device(dev)) diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 3a38352b603f..c9eaf27cbb74 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -615,16 +615,19 @@ static void insert_iommu_master(struct device *dev, static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *spec) { - struct msm_iommu_dev *iommu; + struct msm_iommu_dev *iommu = NULL, *iter; unsigned long flags; int ret = 0; spin_lock_irqsave(&msm_iommu_lock, flags); - list_for_each_entry(iommu, &qcom_iommu_devices, dev_node) - if (iommu->dev->of_node == spec->np) + list_for_each_entry(iter, &qcom_iommu_devices, dev_node) { + if (iter->dev->of_node == spec->np) { + iommu = iter; break; + } + } - if (!iommu || iommu->dev->of_node != spec->np) { + if (!iommu) { ret = -ENODEV; goto fail; } diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 5971a1168666..2ae46fa6b3de 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -451,7 +451,7 @@ static void mtk_iommu_domain_free(struct iommu_domain *domain) static int mtk_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { - struct mtk_iommu_data *data = dev_iommu_priv_get(dev); + struct mtk_iommu_data *data = dev_iommu_priv_get(dev), *frstdata; struct mtk_iommu_domain *dom = to_mtk_domain(domain); struct device *m4udev = data->dev; int ret, domid; @@ -461,20 +461,24 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, return domid; if (!dom->data) { - if (mtk_iommu_domain_finalise(dom, data, domid)) + /* Data is in the frstdata in sharing pgtable case. */ + frstdata = mtk_iommu_get_m4u_data(); + + if (mtk_iommu_domain_finalise(dom, frstdata, domid)) return -ENODEV; dom->data = data; } + mutex_lock(&data->mutex); if (!data->m4u_dom) { /* Initialize the M4U HW */ ret = pm_runtime_resume_and_get(m4udev); if (ret < 0) - return ret; + goto err_unlock; ret = mtk_iommu_hw_init(data); if (ret) { pm_runtime_put(m4udev); - return ret; + goto err_unlock; } data->m4u_dom = dom; writel(dom->cfg.arm_v7s_cfg.ttbr & MMU_PT_ADDR_MASK, @@ -482,9 +486,14 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, pm_runtime_put(m4udev); } + mutex_unlock(&data->mutex); mtk_iommu_config(data, dev, true, domid); return 0; + +err_unlock: + mutex_unlock(&data->mutex); + return ret; } static void mtk_iommu_detach_device(struct iommu_domain *domain, @@ -577,6 +586,9 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev) * All the ports in each a device should be in the same larbs. */ larbid = MTK_M4U_TO_LARB(fwspec->ids[0]); + if (larbid >= MTK_LARB_NR_MAX) + return ERR_PTR(-EINVAL); + for (i = 1; i < fwspec->num_ids; i++) { larbidx = MTK_M4U_TO_LARB(fwspec->ids[i]); if (larbid != larbidx) { @@ -586,6 +598,9 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev) } } larbdev = data->larb_imu[larbid].dev; + if (!larbdev) + return ERR_PTR(-EINVAL); + link = device_link_add(dev, larbdev, DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS); if (!link) @@ -624,6 +639,7 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev) if (domid < 0) return ERR_PTR(domid); + mutex_lock(&data->mutex); group = data->m4u_group[domid]; if (!group) { group = iommu_group_alloc(); @@ -632,6 +648,7 @@ static struct iommu_group *mtk_iommu_device_group(struct device *dev) } else { iommu_group_ref_get(group); } + mutex_unlock(&data->mutex); return group; } @@ -906,6 +923,7 @@ static int mtk_iommu_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, data); + mutex_init(&data->mutex); ret = iommu_device_sysfs_add(&data->iommu, dev, NULL, "mtk-iommu.%pa", &ioaddr); @@ -951,10 +969,8 @@ static int mtk_iommu_remove(struct platform_device *pdev) iommu_device_sysfs_remove(&data->iommu); iommu_device_unregister(&data->iommu); - if (iommu_present(&platform_bus_type)) - bus_set_iommu(&platform_bus_type, NULL); + list_del(&data->list); - clk_disable_unprepare(data->bclk); device_link_remove(data->smicomm_dev, &pdev->dev); pm_runtime_disable(&pdev->dev); devm_free_irq(&pdev->dev, data->irq, data); diff --git a/drivers/iommu/mtk_iommu.h b/drivers/iommu/mtk_iommu.h index f81fa8862ed0..f413546ac6e5 100644 --- a/drivers/iommu/mtk_iommu.h +++ b/drivers/iommu/mtk_iommu.h @@ -80,6 +80,8 @@ struct mtk_iommu_data { struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */ + struct mutex mutex; /* Protect m4u_group/m4u_dom above */ + struct list_head list; struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX]; }; diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index bc7ee90b9373..254530ad6c48 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -80,6 +80,7 @@ /* MTK generation one iommu HW only support 4K size mapping */ #define MT2701_IOMMU_PAGE_SHIFT 12 #define MT2701_IOMMU_PAGE_SIZE (1UL << MT2701_IOMMU_PAGE_SHIFT) +#define MT2701_LARB_NR_MAX 3 /* * MTK m4u support 4GB iova address space, and only support 4K page @@ -457,6 +458,9 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev) /* Link the consumer device with the smi-larb device(supplier) */ larbid = mt2701_m4u_to_larb(fwspec->ids[0]); + if (larbid >= MT2701_LARB_NR_MAX) + return ERR_PTR(-EINVAL); + for (idx = 1; idx < fwspec->num_ids; idx++) { larbidx = mt2701_m4u_to_larb(fwspec->ids[idx]); if (larbid != larbidx) { @@ -467,6 +471,9 @@ static struct iommu_device *mtk_iommu_probe_device(struct device *dev) } larbdev = data->larb_imu[larbid].dev; + if (!larbdev) + return ERR_PTR(-EINVAL); + link = device_link_add(dev, larbdev, DL_FLAG_PM_RUNTIME | DL_FLAG_STATELESS); if (!link) |