diff options
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-qcom.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 8554482debe8..02bfe415c7ac 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -53,6 +53,7 @@ #define PARF_SLV_ADDR_SPACE_SIZE 0x358 #define PARF_DEVICE_TYPE 0x1000 #define PARF_BDF_TO_SID_TABLE_N 0x2000 +#define PARF_BDF_TO_SID_CFG 0x2c00 /* ELBI registers */ #define ELBI_SYS_CTRL 0x04 @@ -120,6 +121,9 @@ /* PARF_DEVICE_TYPE register fields */ #define DEVICE_TYPE_RC 0x4 +/* PARF_BDF_TO_SID_CFG fields */ +#define BDF_TO_SID_BYPASS BIT(0) + /* ELBI_SYS_CTRL register fields */ #define ELBI_SYS_CTRL_LT_ENABLE BIT(0) @@ -1030,11 +1034,17 @@ static int qcom_pcie_config_sid_1_9_0(struct qcom_pcie *pcie) u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE]; int i, nr_map, size = 0; u32 smmu_sid_base; + u32 val; of_get_property(dev->of_node, "iommu-map", &size); if (!size) return 0; + /* Enable BDF to SID translation by disabling bypass mode (default) */ + val = readl(pcie->parf + PARF_BDF_TO_SID_CFG); + val &= ~BDF_TO_SID_BYPASS; + writel(val, pcie->parf + PARF_BDF_TO_SID_CFG); + map = kzalloc(size, GFP_KERNEL); if (!map) return -ENOMEM; |