diff options
Diffstat (limited to 'drivers/iommu/io-pgtable-arm-v7s.c')
| -rw-r--r-- | drivers/iommu/io-pgtable-arm-v7s.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index dc74631322e4..ec024c75a09e 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -187,7 +187,8 @@ static arm_v7s_iopte *iopte_deref(arm_v7s_iopte pte, int lvl) static void *__arm_v7s_alloc_table(int lvl, gfp_t gfp, struct arm_v7s_io_pgtable *data) { - struct device *dev = data->iop.cfg.iommu_dev; + struct io_pgtable_cfg *cfg = &data->iop.cfg; + struct device *dev = cfg->iommu_dev; dma_addr_t dma; size_t size = ARM_V7S_TABLE_SIZE(lvl); void *table = NULL; @@ -196,7 +197,7 @@ static void *__arm_v7s_alloc_table(int lvl, gfp_t gfp, table = (void *)__get_dma_pages(__GFP_ZERO, get_order(size)); else if (lvl == 2) table = kmem_cache_zalloc(data->l2_tables, gfp | GFP_DMA); - if (table && !selftest_running) { + if (table && !(cfg->quirks & IO_PGTABLE_QUIRK_NO_DMA)) { dma = dma_map_single(dev, table, size, DMA_TO_DEVICE); if (dma_mapping_error(dev, dma)) goto out_free; @@ -225,10 +226,11 @@ out_free: static void __arm_v7s_free_table(void *table, int lvl, struct arm_v7s_io_pgtable *data) { - struct device *dev = data->iop.cfg.iommu_dev; + struct io_pgtable_cfg *cfg = &data->iop.cfg; + struct device *dev = cfg->iommu_dev; size_t size = ARM_V7S_TABLE_SIZE(lvl); - if (!selftest_running) + if (!(cfg->quirks & IO_PGTABLE_QUIRK_NO_DMA)) dma_unmap_single(dev, __arm_v7s_dma_addr(table), size, DMA_TO_DEVICE); if (lvl == 1) @@ -240,7 +242,7 @@ static void __arm_v7s_free_table(void *table, int lvl, static void __arm_v7s_pte_sync(arm_v7s_iopte *ptep, int num_entries, struct io_pgtable_cfg *cfg) { - if (selftest_running) + if (!(cfg->quirks & IO_PGTABLE_QUIRK_NO_DMA)) return; dma_sync_single_for_device(cfg->iommu_dev, __arm_v7s_dma_addr(ptep), @@ -657,7 +659,8 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct io_pgtable_cfg *cfg, if (cfg->quirks & ~(IO_PGTABLE_QUIRK_ARM_NS | IO_PGTABLE_QUIRK_NO_PERMS | IO_PGTABLE_QUIRK_TLBI_ON_MAP | - IO_PGTABLE_QUIRK_ARM_MTK_4GB)) + IO_PGTABLE_QUIRK_ARM_MTK_4GB | + IO_PGTABLE_QUIRK_NO_DMA)) return NULL; /* If ARM_MTK_4GB is enabled, the NO_PERMS is also expected. */ @@ -774,7 +777,7 @@ static int __init arm_v7s_do_selftests(void) .tlb = &dummy_tlb_ops, .oas = 32, .ias = 32, - .quirks = IO_PGTABLE_QUIRK_ARM_NS, + .quirks = IO_PGTABLE_QUIRK_ARM_NS | IO_PGTABLE_QUIRK_NO_DMA, .pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M, }; unsigned int iova, size, iova_start; |