PCI: xilinx-nwl: Expand error logging

The current driver logs PCIe core errors.  Add logging for individual core
events.

[bhelgaas: changelog]
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/host/pcie-xilinx-nwl.c
index 0b597d9..dfdf58f 100644 (file)
--- a/drivers/pci/host/pcie-xilinx-nwl.c
+++ b/drivers/pci/host/pcie-xilinx-nwl.c
@@ -85,10 +85,15 @@
 #define MSGF_MISC_SR_MASTER_ERR                BIT(5)
 #define MSGF_MISC_SR_I_ADDR_ERR                BIT(6)
 #define MSGF_MISC_SR_E_ADDR_ERR                BIT(7)
-#define MSGF_MISC_SR_UR_DETECT          BIT(20)
-
-#define MSGF_MISC_SR_PCIE_CORE         GENMASK(18, 16)
-#define MSGF_MISC_SR_PCIE_CORE_ERR     GENMASK(31, 22)
+#define MSGF_MISC_SR_FATAL_AER         BIT(16)
+#define MSGF_MISC_SR_NON_FATAL_AER     BIT(17)
+#define MSGF_MISC_SR_CORR_AER          BIT(18)
+#define MSGF_MISC_SR_UR_DETECT         BIT(20)
+#define MSGF_MISC_SR_NON_FATAL_DEV     BIT(22)
+#define MSGF_MISC_SR_FATAL_DEV         BIT(23)
+#define MSGF_MISC_SR_LINK_DOWN         BIT(24)
+#define MSGF_MSIC_SR_LINK_AUTO_BWIDTH  BIT(25)
+#define MSGF_MSIC_SR_LINK_BWIDTH       BIT(26)
 
 #define MSGF_MISC_SR_MASKALL           (MSGF_MISC_SR_RXMSG_AVAIL | \
                                        MSGF_MISC_SR_RXMSG_OVER | \
@@ -96,9 +101,15 @@
                                        MSGF_MISC_SR_MASTER_ERR | \
                                        MSGF_MISC_SR_I_ADDR_ERR | \
                                        MSGF_MISC_SR_E_ADDR_ERR | \
+                                       MSGF_MISC_SR_FATAL_AER | \
+                                       MSGF_MISC_SR_NON_FATAL_AER | \
+                                       MSGF_MISC_SR_CORR_AER | \
                                        MSGF_MISC_SR_UR_DETECT | \
-                                       MSGF_MISC_SR_PCIE_CORE | \
-                                       MSGF_MISC_SR_PCIE_CORE_ERR)
+                                       MSGF_MISC_SR_NON_FATAL_DEV | \
+                                       MSGF_MISC_SR_FATAL_DEV | \
+                                       MSGF_MISC_SR_LINK_DOWN | \
+                                       MSGF_MSIC_SR_LINK_AUTO_BWIDTH | \
+                                       MSGF_MSIC_SR_LINK_BWIDTH)
 
 /* Legacy interrupt status mask bits */
 #define MSGF_LEG_SR_INTA               BIT(0)
@@ -291,8 +302,29 @@ static irqreturn_t nwl_pcie_misc_handler(int irq, void *data)
                dev_err(pcie->dev,
                        "In Misc Egress address translation error\n");
 
-       if (misc_stat & MSGF_MISC_SR_PCIE_CORE_ERR)
-               dev_err(pcie->dev, "PCIe Core error\n");
+       if (misc_stat & MSGF_MISC_SR_FATAL_AER)
+               dev_err(pcie->dev, "Fatal Error in AER Capability\n");
+
+       if (misc_stat & MSGF_MISC_SR_NON_FATAL_AER)
+               dev_err(pcie->dev, "Non-Fatal Error in AER Capability\n");
+
+       if (misc_stat & MSGF_MISC_SR_CORR_AER)
+               dev_err(pcie->dev, "Correctable Error in AER Capability\n");
+
+       if (misc_stat & MSGF_MISC_SR_UR_DETECT)
+               dev_err(pcie->dev, "Unsupported request Detected\n");
+
+       if (misc_stat & MSGF_MISC_SR_NON_FATAL_DEV)
+               dev_err(pcie->dev, "Non-Fatal Error Detected\n");
+
+       if (misc_stat & MSGF_MISC_SR_FATAL_DEV)
+               dev_err(pcie->dev, "Fatal Error Detected\n");
+
+       if (misc_stat & MSGF_MSIC_SR_LINK_AUTO_BWIDTH)
+               dev_info(pcie->dev, "Link Autonomous Bandwidth Management Status bit set\n");
+
+       if (misc_stat & MSGF_MSIC_SR_LINK_BWIDTH)
+               dev_info(pcie->dev, "Link Bandwidth Management Status bit set\n");
 
        /* Clear misc interrupt status */
        nwl_bridge_writel(pcie, misc_stat, MSGF_MISC_STATUS);