diff mbox series

[V6,07/27] PCI: tegra: Advertise PCIe Advanced Error Reporting (AER) capability

Message ID 20190618180206.4908-8-mmaddireddy@nvidia.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show
Series Enable Tegra PCIe root port features | expand

Commit Message

Manikanta Maddireddy June 18, 2019, 6:01 p.m. UTC 
Default root port setting hides AER capability. This patch enables the
advertisement of AER capability by root port.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
---
V6: No change

V5: No change

V4: No change

V3: No change

V2: No change

 drivers/pci/controller/pci-tegra.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index 5d19067f7193..39a8cbf6da24 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -180,6 +180,9 @@ 
 #define RP_VEND_XP	0x00000f00
 #define  RP_VEND_XP_DL_UP	(1 << 30)
 
+#define RP_VEND_CTL1	0x00000f48
+#define  RP_VEND_CTL1_ERPT	(1 << 13)
+
 #define RP_VEND_CTL2 0x00000fa8
 #define  RP_VEND_CTL2_PCA_ENABLE (1 << 7)
 
@@ -479,6 +482,16 @@  static void tegra_pcie_port_reset(struct tegra_pcie_port *port)
 	afi_writel(port->pcie, value, ctrl);
 }
 
+static void tegra_pcie_enable_rp_features(struct tegra_pcie_port *port)
+{
+	u32 value;
+
+	/* Enable AER capability */
+	value = readl(port->base + RP_VEND_CTL1);
+	value |= RP_VEND_CTL1_ERPT;
+	writel(value, port->base + RP_VEND_CTL1);
+}
+
 static void tegra_pcie_port_enable(struct tegra_pcie_port *port)
 {
 	unsigned long ctrl = tegra_pcie_port_get_pex_ctrl(port);
@@ -503,6 +516,8 @@  static void tegra_pcie_port_enable(struct tegra_pcie_port *port)
 		value |= RP_VEND_CTL2_PCA_ENABLE;
 		writel(value, port->base + RP_VEND_CTL2);
 	}
+
+	tegra_pcie_enable_rp_features(port);
 }
 
 static void tegra_pcie_port_disable(struct tegra_pcie_port *port)