diff options
| -rw-r--r-- | drivers/iommu/amd/init.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index d7dce20dca43..d6a24032a948 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -238,7 +238,7 @@ static enum iommu_init_state init_state = IOMMU_START_STATE; static int amd_iommu_enable_interrupts(void); static int __init iommu_go_to_state(enum iommu_init_state state); -static void init_device_table_dma(void); +static void init_device_table_dma(struct amd_iommu_pci_seg *pci_seg); static bool amd_iommu_pre_enabled = true; @@ -2119,6 +2119,7 @@ static void print_iommu_info(void) static int __init amd_iommu_init_pci(void) { struct amd_iommu *iommu; + struct amd_iommu_pci_seg *pci_seg; int ret; for_each_iommu(iommu) { @@ -2149,7 +2150,8 @@ static int __init amd_iommu_init_pci(void) goto out; } - init_device_table_dma(); + for_each_pci_segment(pci_seg) + init_device_table_dma(pci_seg); for_each_iommu(iommu) iommu_flush_all_caches(iommu); @@ -2511,9 +2513,13 @@ static int __init init_memory_definitions(struct acpi_table_header *table) /* * Init the device table to not allow DMA access for devices */ -static void init_device_table_dma(void) +static void init_device_table_dma(struct amd_iommu_pci_seg *pci_seg) { u32 devid; + struct dev_table_entry *dev_table = pci_seg->dev_table; + + if (dev_table == NULL) + return; for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) { set_dev_entry_bit(devid, DEV_ENTRY_VALID); @@ -2521,13 +2527,17 @@ static void init_device_table_dma(void) } } -static void __init uninit_device_table_dma(void) +static void __init uninit_device_table_dma(struct amd_iommu_pci_seg *pci_seg) { u32 devid; + struct dev_table_entry *dev_table = pci_seg->dev_table; + + if (dev_table == NULL) + return; for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) { - amd_iommu_dev_table[devid].data[0] = 0ULL; - amd_iommu_dev_table[devid].data[1] = 0ULL; + dev_table[devid].data[0] = 0ULL; + dev_table[devid].data[1] = 0ULL; } } @@ -3120,8 +3130,11 @@ static int __init state_next(void) free_iommu_resources(); } else { struct amd_iommu *iommu; + struct amd_iommu_pci_seg *pci_seg; + + for_each_pci_segment(pci_seg) + uninit_device_table_dma(pci_seg); - uninit_device_table_dma(); for_each_iommu(iommu) iommu_flush_all_caches(iommu); } |