diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index d536d24b6f34..fee872f666f5 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1399,6 +1399,16 @@ static void init_device_table_dma(void) } } +static void __init uninit_device_table_dma(void) +{ + u32 devid; + + 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; + } +} + static void init_device_table(void) { u32 devid; @@ -1567,11 +1577,6 @@ static void __init free_on_init_error(void) } - amd_iommu_uninit_devices(); - - free_pages((unsigned long)amd_iommu_pd_alloc_bitmap, - get_order(MAX_DOMAIN_ID/8)); - free_pages((unsigned long)amd_iommu_rlookup_table, get_order(rlookup_table_size)); @@ -1583,8 +1588,6 @@ static void __init free_on_init_error(void) free_iommu_all(); - free_unity_maps(); - #ifdef CONFIG_GART_IOMMU /* * We failed to initialize the AMD IOMMU - try fallback to GART @@ -1612,6 +1615,16 @@ static bool __init check_ioapic_information(void) return true; } +static void __init free_dma_resources(void) +{ + amd_iommu_uninit_devices(); + + free_pages((unsigned long)amd_iommu_pd_alloc_bitmap, + get_order(MAX_DOMAIN_ID/8)); + + free_unity_maps(); +} + /* * This is the hardware init function for AMD IOMMU in the system. * This function is called either from amd_iommu_init or from the interrupt @@ -1952,8 +1965,17 @@ static int __init amd_iommu_init(void) ret = iommu_go_to_state(IOMMU_INITIALIZED); if (ret) { - disable_iommus(); - free_on_init_error(); + free_dma_resources(); + if (!irq_remapping_enabled) { + disable_iommus(); + free_on_init_error(); + } else { + struct amd_iommu *iommu; + + uninit_device_table_dma(); + for_each_iommu(iommu) + iommu_flush_all_caches(iommu); + } } return ret; |