atl1c: clear PCIE error status in atl1c_reset_pcie

clear PCIE error status (error log is write-1-clear).
REG_PCIE_UC_SEVERITY is removed as it's a standard pcie register,
and using kernle API to access it.

Signed-off-by: xiong <xiong@qca.qualcomm.com>
Tested-by: Liu David <dwliu@qca.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 11 insertions, 17 deletions

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index c9c678213107..6d73ac92db94 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -61,19 +61,6 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
 #define LINK_CTRL_L1_EN                 0x02
 #define LINK_CTRL_EXT_SYNC              0x80
 
-#define REG_PCIE_UC_SEVERITY            0x10C
-#define PCIE_UC_SERVRITY_TRN            0x00000001
-#define PCIE_UC_SERVRITY_DLP            0x00000010
-#define PCIE_UC_SERVRITY_PSN_TLP        0x00001000
-#define PCIE_UC_SERVRITY_FCP            0x00002000
-#define PCIE_UC_SERVRITY_CPL_TO         0x00004000
-#define PCIE_UC_SERVRITY_CA             0x00008000
-#define PCIE_UC_SERVRITY_UC             0x00010000
-#define PCIE_UC_SERVRITY_ROV            0x00020000
-#define PCIE_UC_SERVRITY_MLFP           0x00040000
-#define PCIE_UC_SERVRITY_ECRC           0x00080000
-#define PCIE_UC_SERVRITY_UR             0x00100000
-
 #define REG_DEV_SERIALNUM_CTRL          0x200
 #define REG_DEV_MAC_SEL_MASK            0x0 /* 0:EUI; 1:MAC */
 #define REG_DEV_MAC_SEL_SHIFT           0
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 12b47258960b..729381ac8d1e 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -108,6 +108,7 @@ static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag)
         u32 data;
         u32 pci_cmd;
         struct pci_dev *pdev = hw->adapter->pdev;
+        int pos;
 
         AT_READ_REG(hw, PCI_COMMAND, &pci_cmd);
         pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
@@ -124,10 +125,16 @@ static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag)
         /*
          * Mask some pcie error bits
          */
-        AT_READ_REG(hw, REG_PCIE_UC_SEVERITY, &data);
-        data &= ~PCIE_UC_SERVRITY_DLP;
-        data &= ~PCIE_UC_SERVRITY_FCP;
-        AT_WRITE_REG(hw, REG_PCIE_UC_SEVERITY, data);
+        pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
+        pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, &data);
+        data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP);
+        pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data);
+        /* clear error status */
+        pci_write_config_word(pdev, pci_pcie_cap(pdev) + PCI_EXP_DEVSTA,
+                        PCI_EXP_DEVSTA_NFED |
+                        PCI_EXP_DEVSTA_FED |
+                        PCI_EXP_DEVSTA_CED |
+                        PCI_EXP_DEVSTA_URD);
 
         AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data);
         data &= ~LTSSM_ID_EN_WRO;