diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/amd_iommu_types.h | 2 | ||||
| -rw-r--r-- | drivers/iommu/amd/init.c | 27 | ||||
| -rw-r--r-- | drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 4 | ||||
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 24 | ||||
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 14 | ||||
| -rw-r--r-- | drivers/iommu/iommu.c | 10 |
6 files changed, 62 insertions, 19 deletions
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h index 89647700bab2..494b42a31b7a 100644 --- a/drivers/iommu/amd/amd_iommu_types.h +++ b/drivers/iommu/amd/amd_iommu_types.h @@ -257,7 +257,7 @@ #define DTE_IRQ_REMAP_INTCTL_MASK (0x3ULL << 60) #define DTE_IRQ_TABLE_LEN_MASK (0xfULL << 1) #define DTE_IRQ_REMAP_INTCTL (2ULL << 60) -#define DTE_IRQ_TABLE_LEN (8ULL << 1) +#define DTE_IRQ_TABLE_LEN (9ULL << 1) #define DTE_IRQ_REMAP_ENABLE 1ULL #define PAGE_MODE_NONE 0x00 diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 82e4af8f09bb..23a790f8f550 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -29,6 +29,7 @@ #include <asm/iommu_table.h> #include <asm/io_apic.h> #include <asm/irq_remapping.h> +#include <asm/set_memory.h> #include <linux/crash_dump.h> @@ -672,11 +673,27 @@ static void __init free_command_buffer(struct amd_iommu *iommu) free_pages((unsigned long)iommu->cmd_buf, get_order(CMD_BUFFER_SIZE)); } +static void *__init iommu_alloc_4k_pages(struct amd_iommu *iommu, + gfp_t gfp, size_t size) +{ + int order = get_order(size); + void *buf = (void *)__get_free_pages(gfp, order); + + if (buf && + iommu_feature(iommu, FEATURE_SNP) && + set_memory_4k((unsigned long)buf, (1 << order))) { + free_pages((unsigned long)buf, order); + buf = NULL; + } + + return buf; +} + /* allocates the memory where the IOMMU will log its events to */ static int __init alloc_event_buffer(struct amd_iommu *iommu) { - iommu->evt_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, - get_order(EVT_BUFFER_SIZE)); + iommu->evt_buf = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO, + EVT_BUFFER_SIZE); return iommu->evt_buf ? 0 : -ENOMEM; } @@ -715,8 +732,8 @@ static void __init free_event_buffer(struct amd_iommu *iommu) /* allocates the memory where the IOMMU will log its events to */ static int __init alloc_ppr_log(struct amd_iommu *iommu) { - iommu->ppr_log = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, - get_order(PPR_LOG_SIZE)); + iommu->ppr_log = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO, + PPR_LOG_SIZE); return iommu->ppr_log ? 0 : -ENOMEM; } @@ -838,7 +855,7 @@ static int iommu_init_ga(struct amd_iommu *iommu) static int __init alloc_cwwb_sem(struct amd_iommu *iommu) { - iommu->cmd_sem = (void *)get_zeroed_page(GFP_KERNEL); + iommu->cmd_sem = iommu_alloc_4k_pages(iommu, GFP_KERNEL | __GFP_ZERO, 1); return iommu->cmd_sem ? 0 : -ENOMEM; } diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c index be4318044f96..702fbaa6c9ad 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -69,6 +69,10 @@ struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu) { struct qcom_smmu *qsmmu; + /* Check to make sure qcom_scm has finished probing */ + if (!qcom_scm_is_available()) + return ERR_PTR(-EPROBE_DEFER); + qsmmu = devm_kzalloc(smmu->dev, sizeof(*qsmmu), GFP_KERNEL); if (!qsmmu) return ERR_PTR(-ENOMEM); diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 404b40af31cb..b46dbfa6d0ed 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -333,6 +333,13 @@ static void dmar_pci_bus_del_dev(struct dmar_pci_notify_info *info) dmar_iommu_notify_scope_dev(info); } +static inline void vf_inherit_msi_domain(struct pci_dev *pdev) +{ + struct pci_dev *physfn = pci_physfn(pdev); + + dev_set_msi_domain(&pdev->dev, dev_get_msi_domain(&physfn->dev)); +} + static int dmar_pci_bus_notifier(struct notifier_block *nb, unsigned long action, void *data) { @@ -342,8 +349,20 @@ static int dmar_pci_bus_notifier(struct notifier_block *nb, /* Only care about add/remove events for physical functions. * For VFs we actually do the lookup based on the corresponding * PF in device_to_iommu() anyway. */ - if (pdev->is_virtfn) + if (pdev->is_virtfn) { + /* + * Ensure that the VF device inherits the irq domain of the + * PF device. Ideally the device would inherit the domain + * from the bus, but DMAR can have multiple units per bus + * which makes this impossible. The VF 'bus' could inherit + * from the PF device, but that's yet another x86'sism to + * inflict on everybody else. + */ + if (action == BUS_NOTIFY_ADD_DEVICE) + vf_inherit_msi_domain(pdev); return NOTIFY_DONE; + } + if (action != BUS_NOTIFY_ADD_DEVICE && action != BUS_NOTIFY_REMOVED_DEVICE) return NOTIFY_DONE; @@ -967,7 +986,8 @@ static int map_iommu(struct intel_iommu *iommu, u64 phys_addr) warn_invalid_dmar(phys_addr, " returns all ones"); goto unmap; } - iommu->vccap = dmar_readq(iommu->reg + DMAR_VCCAP_REG); + if (ecap_vcs(iommu->ecap)) + iommu->vccap = dmar_readq(iommu->reg + DMAR_VCCAP_REG); /* the registers might be more than one page */ map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap), diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 1b1ca63e6bbe..a49afa11673c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -179,7 +179,7 @@ static int rwbf_quirk; * (used when kernel is launched w/ TXT) */ static int force_on = 0; -int intel_iommu_tboot_noforce; +static int intel_iommu_tboot_noforce; static int no_platform_optin; #define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry)) @@ -1833,7 +1833,7 @@ static void free_dmar_iommu(struct intel_iommu *iommu) if (ecap_prs(iommu->ecap)) intel_svm_finish_prq(iommu); } - if (ecap_vcs(iommu->ecap) && vccap_pasid(iommu->vccap)) + if (vccap_pasid(iommu->vccap)) ioasid_unregister_allocator(&iommu->pasid_allocator); #endif @@ -3212,7 +3212,7 @@ static void register_pasid_allocator(struct intel_iommu *iommu) * is active. All vIOMMU allocators will eventually be calling the same * host allocator. */ - if (!ecap_vcs(iommu->ecap) || !vccap_pasid(iommu->vccap)) + if (!vccap_pasid(iommu->vccap)) return; pr_info("Register custom PASID allocator\n"); @@ -3818,9 +3818,8 @@ bounce_map_single(struct device *dev, phys_addr_t paddr, size_t size, * page aligned, we don't need to use a bounce page. */ if (!IS_ALIGNED(paddr | size, VTD_PAGE_SIZE)) { - tlb_addr = swiotlb_tbl_map_single(dev, - phys_to_dma_unencrypted(dev, io_tlb_start), - paddr, size, aligned_size, dir, attrs); + tlb_addr = swiotlb_tbl_map_single(dev, paddr, size, + aligned_size, dir, attrs); if (tlb_addr == DMA_MAPPING_ERROR) { goto swiotlb_error; } else { @@ -4885,7 +4884,8 @@ int __init intel_iommu_init(void) * Intel IOMMU is required for a TXT/tboot launch or platform * opt in, so enforce that. */ - force_on = tboot_force_iommu() || platform_optin_force_iommu(); + force_on = (!intel_iommu_tboot_noforce && tboot_force_iommu()) || + platform_optin_force_iommu(); if (iommu_init_mempool()) { if (force_on) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index b53446bb8c6b..0f4dc25d46c9 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -264,16 +264,18 @@ int iommu_probe_device(struct device *dev) */ iommu_alloc_default_domain(group, dev); - if (group->default_domain) + if (group->default_domain) { ret = __iommu_attach_device(group->default_domain, dev); + if (ret) { + iommu_group_put(group); + goto err_release; + } + } iommu_create_device_direct_mappings(group, dev); iommu_group_put(group); - if (ret) - goto err_release; - if (ops->probe_finalize) ops->probe_finalize(dev); |