diff options
| -rw-r--r-- | drivers/iommu/io-pgtable-fast.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/iommu/io-pgtable-fast.c b/drivers/iommu/io-pgtable-fast.c index 9a25ebfdc778..d3357573d7bb 100644 --- a/drivers/iommu/io-pgtable-fast.c +++ b/drivers/iommu/io-pgtable-fast.c @@ -428,9 +428,14 @@ av8l_fast_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie) cfg->pgsize_bitmap = SZ_4K; /* TCR */ - reg = (AV8L_FAST_TCR_SH_IS << AV8L_FAST_TCR_SH0_SHIFT) | - (AV8L_FAST_TCR_RGN_NC << AV8L_FAST_TCR_IRGN0_SHIFT) | - (AV8L_FAST_TCR_RGN_NC << AV8L_FAST_TCR_ORGN0_SHIFT); + if (cfg->iommu_dev && cfg->iommu_dev->archdata.dma_coherent) + reg = (AV8L_FAST_TCR_SH_OS << AV8L_FAST_TCR_SH0_SHIFT) | + (AV8L_FAST_TCR_RGN_WBWA << AV8L_FAST_TCR_IRGN0_SHIFT) | + (AV8L_FAST_TCR_RGN_WBWA << AV8L_FAST_TCR_ORGN0_SHIFT); + else + reg = (AV8L_FAST_TCR_SH_IS << AV8L_FAST_TCR_SH0_SHIFT) | + (AV8L_FAST_TCR_RGN_NC << AV8L_FAST_TCR_IRGN0_SHIFT) | + (AV8L_FAST_TCR_RGN_NC << AV8L_FAST_TCR_ORGN0_SHIFT); reg |= AV8L_FAST_TCR_TG0_4K; |