Get "nvidia,swgroups" from DT, which indicates which HardWare Accelerators(HWAs) can be available on specific Tegra SoC. Needed for the unified SMMU driver.
Signed-off-by: Hiroshi Doyu <[email protected]> --- drivers/iommu/tegra-smmu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 95c6c80..c67131e 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -307,6 +307,8 @@ struct smmu_device { struct device *dev; struct page *avp_vector_page; /* dummy page shared by all AS's */ + u64 swgroups; /* swgroup ID bitmap */ + /* * Register image savers for suspend/resume */ @@ -1210,6 +1212,7 @@ static int tegra_smmu_probe(struct platform_device *pdev) int i, asids, err = 0; dma_addr_t uninitialized_var(base); size_t bytes, uninitialized_var(size); + u64 swgroups; if (smmu_handle) return -EIO; @@ -1219,6 +1222,9 @@ static int tegra_smmu_probe(struct platform_device *pdev) if (of_property_read_u32(dev->of_node, "nvidia,#asids", &asids)) return -ENODEV; + if (of_property_read_u64(dev->of_node, "nvidia,swgroups", &swgroups)) + return -ENODEV; + bytes = sizeof(*smmu) + asids * (sizeof(*smmu->as) + sizeof(struct dma_iommu_mapping *)); smmu = devm_kzalloc(dev, bytes, GFP_KERNEL); @@ -1267,6 +1273,7 @@ static int tegra_smmu_probe(struct platform_device *pdev) smmu->num_as = asids; smmu->iovmm_base = base; smmu->page_count = size; + smmu->swgroups = swgroups; smmu->translation_enable_0 = ~0; smmu->translation_enable_1 = ~0; -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
