diff options
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 7ffc39965233..fb490ce7dd55 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -138,6 +138,11 @@ int amd_iommus_present; bool amd_iommu_np_cache __read_mostly; /* + * Set to true if ACPI table parsing and hardware intialization went properly + */ +static bool amd_iommu_initialized; + +/* * List of protection domains - used during resume */ LIST_HEAD(amd_iommu_pd_list); @@ -929,6 +934,8 @@ static int __init init_iommu_all(struct acpi_table_header *table) } WARN_ON(p != end); + amd_iommu_initialized = true; + return 0; } @@ -1263,6 +1270,9 @@ static int __init amd_iommu_init(void) if (acpi_table_parse("IVRS", init_iommu_all) != 0) goto free; + if (!amd_iommu_initialized) + goto free; + if (acpi_table_parse("IVRS", init_memory_definitions) != 0) goto free; @@ -1274,6 +1284,10 @@ static int __init amd_iommu_init(void) if (ret) goto free; + ret = amd_iommu_init_devices(); + if (ret) + goto free; + if (iommu_pass_through) ret = amd_iommu_init_passthrough(); else @@ -1281,6 +1295,8 @@ static int __init amd_iommu_init(void) if (ret) goto free; + amd_iommu_init_notifier(); + enable_iommus(); if (iommu_pass_through) @@ -1296,6 +1312,9 @@ out: return ret; free: + + amd_iommu_uninit_devices(); + free_pages((unsigned long)amd_iommu_pd_alloc_bitmap, get_order(MAX_DOMAIN_ID/8)); @@ -1336,6 +1355,9 @@ void __init amd_iommu_detect(void) iommu_detected = 1; amd_iommu_detected = 1; x86_init.iommu.iommu_init = amd_iommu_init; + + /* Make sure ACS will be enabled */ + pci_request_acs(); } } |