diff options
| -rw-r--r-- | drivers/iommu/amd/amd_iommu.h | 7 | ||||
| -rw-r--r-- | drivers/iommu/amd/amd_iommu_types.h | 2 | ||||
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 58 |
3 files changed, 38 insertions, 29 deletions
diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 64c954e168d7..e73bd48fc716 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -115,6 +115,13 @@ void amd_iommu_domain_clr_pt_root(struct protection_domain *domain) amd_iommu_domain_set_pt_root(domain, 0); } +static inline int get_pci_sbdf_id(struct pci_dev *pdev) +{ + int seg = pci_domain_nr(pdev->bus); + u16 devid = pci_dev_id(pdev); + + return PCI_SEG_DEVID_TO_SBDF(seg, devid); +} extern bool translation_pre_enabled(struct amd_iommu *iommu); extern bool amd_iommu_is_attach_deferred(struct device *dev); diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h index 65b02e2ae28f..ea238e8e6c99 100644 --- a/drivers/iommu/amd/amd_iommu_types.h +++ b/drivers/iommu/amd/amd_iommu_types.h @@ -456,6 +456,8 @@ extern struct kmem_cache *amd_iommu_irq_cache; #define PCI_SBDF_TO_SEGID(sbdf) (((sbdf) >> 16) & 0xffff) #define PCI_SBDF_TO_DEVID(sbdf) ((sbdf) & 0xffff) +#define PCI_SEG_DEVID_TO_SBDF(seg, devid) ((((u32)(seg) & 0xffff) << 16) | \ + ((devid) & 0xffff)) /* Make iterating over all pci segment easier */ #define for_each_pci_segment(pci_seg) \ diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 6914911d4fb6..0751dda04a10 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -92,13 +92,6 @@ static void detach_device(struct device *dev); * ****************************************************************************/ -static inline u16 get_pci_device_id(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - - return pci_dev_id(pdev); -} - static inline int get_acpihid_device_id(struct device *dev, struct acpihid_map_entry **entry) { @@ -119,16 +112,16 @@ static inline int get_acpihid_device_id(struct device *dev, return -EINVAL; } -static inline int get_device_id(struct device *dev) +static inline int get_device_sbdf_id(struct device *dev) { - int devid; + int sbdf; if (dev_is_pci(dev)) - devid = get_pci_device_id(dev); + sbdf = get_pci_sbdf_id(to_pci_dev(dev)); else - devid = get_acpihid_device_id(dev, NULL); + sbdf = get_acpihid_device_id(dev, NULL); - return devid; + return sbdf; } struct dev_table_entry *get_dev_table(struct amd_iommu *iommu) @@ -182,9 +175,11 @@ static struct amd_iommu *__rlookup_amd_iommu(u16 seg, u16 devid) static struct amd_iommu *rlookup_amd_iommu(struct device *dev) { u16 seg = get_device_segment(dev); - u16 devid = get_device_id(dev); + int devid = get_device_sbdf_id(dev); - return __rlookup_amd_iommu(seg, devid); + if (devid < 0) + return NULL; + return __rlookup_amd_iommu(seg, PCI_SBDF_TO_DEVID(devid)); } static struct protection_domain *to_pdomain(struct iommu_domain *dom) @@ -360,14 +355,15 @@ static bool check_device(struct device *dev) { struct amd_iommu_pci_seg *pci_seg; struct amd_iommu *iommu; - int devid; + int devid, sbdf; if (!dev) return false; - devid = get_device_id(dev); - if (devid < 0) + sbdf = get_device_sbdf_id(dev); + if (sbdf < 0) return false; + devid = PCI_SBDF_TO_DEVID(sbdf); iommu = rlookup_amd_iommu(dev); if (!iommu) @@ -375,7 +371,7 @@ static bool check_device(struct device *dev) /* Out of our scope? */ pci_seg = iommu->pci_seg; - if ((devid & 0xffff) > pci_seg->last_bdf) + if (devid > pci_seg->last_bdf) return false; return true; @@ -384,15 +380,16 @@ static bool check_device(struct device *dev) static int iommu_init_device(struct amd_iommu *iommu, struct device *dev) { struct iommu_dev_data *dev_data; - int devid; + int devid, sbdf; if (dev_iommu_priv_get(dev)) return 0; - devid = get_device_id(dev); - if (devid < 0) - return devid; + sbdf = get_device_sbdf_id(dev); + if (sbdf < 0) + return sbdf; + devid = PCI_SBDF_TO_DEVID(sbdf); dev_data = find_dev_data(iommu, devid); if (!dev_data) return -ENOMEM; @@ -420,12 +417,13 @@ static void iommu_ignore_device(struct amd_iommu *iommu, struct device *dev) { struct amd_iommu_pci_seg *pci_seg = iommu->pci_seg; struct dev_table_entry *dev_table = get_dev_table(iommu); - int devid; + int devid, sbdf; - devid = (get_device_id(dev)) & 0xffff; - if (devid < 0) + sbdf = get_device_sbdf_id(dev); + if (sbdf < 0) return; + devid = PCI_SBDF_TO_DEVID(sbdf); pci_seg->rlookup_table[devid] = NULL; memset(&dev_table[devid], 0, sizeof(struct dev_table_entry)); @@ -2258,11 +2256,13 @@ static void amd_iommu_get_resv_regions(struct device *dev, struct unity_map_entry *entry; struct amd_iommu *iommu; struct amd_iommu_pci_seg *pci_seg; - int devid; + int devid, sbdf; - devid = get_device_id(dev); - if (devid < 0) + sbdf = get_device_sbdf_id(dev); + if (sbdf < 0) return; + + devid = PCI_SBDF_TO_DEVID(sbdf); iommu = rlookup_amd_iommu(dev); if (!iommu) return; @@ -3156,7 +3156,7 @@ static int get_devid(struct irq_alloc_info *info) return get_hpet_devid(info->devid); case X86_IRQ_ALLOC_TYPE_PCI_MSI: case X86_IRQ_ALLOC_TYPE_PCI_MSIX: - return get_device_id(msi_desc_to_dev(info->desc)); + return get_device_sbdf_id(msi_desc_to_dev(info->desc)); default: WARN_ON_ONCE(1); return -1; |