sky2: use pci_config access functions

Use the PCI layer config access functions. The driver was using the
memory mapped window in device, to workaround issues accessing the
advanced error reporting registers.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 51 insertions, 42 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index b81d81746c2c..941a60882526 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -223,21 +223,22 @@ static void sky2_power_on(struct sky2_hw *hw)
                 sky2_write8(hw, B2_Y2_CLK_GATE, 0);
 
         if (hw->flags & SKY2_HW_ADV_POWER_CTL) {
+                struct pci_dev *pdev = hw->pdev;
                 u32 reg;
 
-                sky2_pci_write32(hw, PCI_DEV_REG3, 0);
+                pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
 
-                reg = sky2_pci_read32(hw, PCI_DEV_REG4);
+                pci_read_config_dword(pdev, PCI_DEV_REG4, &reg);
                 /* set all bits to 0 except bits 15..12 and 8 */
                 reg &= P_ASPM_CONTROL_MSK;
-                sky2_pci_write32(hw, PCI_DEV_REG4, reg);
+                pci_write_config_dword(pdev, PCI_DEV_REG4, reg);
 
-                reg = sky2_pci_read32(hw, PCI_DEV_REG5);
+                pci_read_config_dword(pdev, PCI_DEV_REG5, &reg);
                 /* set all bits to 0 except bits 28 & 27 */
                 reg &= P_CTL_TIM_VMAIN_AV_MSK;
-                sky2_pci_write32(hw, PCI_DEV_REG5, reg);
+                pci_write_config_dword(pdev, PCI_DEV_REG5, reg);
 
-                sky2_pci_write32(hw, PCI_CFG_REG_1, 0);
+                pci_write_config_dword(pdev, PCI_CFG_REG_1, 0);
 
                 /* Enable workaround for dev 4.107 on Yukon-Ultra & Extreme */
                 reg = sky2_read32(hw, B2_GP_IO);
@@ -603,6 +604,7 @@ static void sky2_phy_init(struct sky2_hw *hw, unsigned port)
 
 static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
 {
+        struct pci_dev *pdev = hw->pdev;
         u32 reg1;
         static const u32 phy_power[]
                 = { PCI_Y2_PHY1_POWD, PCI_Y2_PHY2_POWD };
@@ -611,15 +613,16 @@ static void sky2_phy_power(struct sky2_hw *hw, unsigned port, int onoff)
         if (hw->chip_id == CHIP_ID_YUKON_XL && hw->chip_rev > 1)
                 onoff = !onoff;
 
-        reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
+        pci_read_config_dword(pdev, PCI_DEV_REG1, &reg1);
         if (onoff)
                 /* Turn off phy power saving */
                 reg1 &= ~phy_power[port];
         else
                 reg1 |= phy_power[port];
 
-        sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
-        sky2_pci_read32(hw, PCI_DEV_REG1);
+        pci_write_config_dword(pdev, PCI_DEV_REG1, reg1);
+        pci_read_config_dword(pdev, PCI_DEV_REG1, &reg1);
+
         udelay(100);
 }
 
@@ -687,9 +690,9 @@ static void sky2_wol_init(struct sky2_port *sky2)
         sky2_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
 
         /* Turn on legacy PCI-Express PME mode */
-        reg1 = sky2_pci_read32(hw, PCI_DEV_REG1);
+        pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg1);
         reg1 |= PCI_Y2_PME_LEGACY;
-        sky2_pci_write32(hw, PCI_DEV_REG1, reg1);
+        pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg1);
 
         /* block receiver */
         sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
@@ -1306,9 +1309,9 @@ static int sky2_up(struct net_device *dev)
                 struct sky2_port *osky2 = netdev_priv(otherdev);
                 u16 cmd;
 
-                cmd = sky2_pci_read16(hw, cap + PCI_X_CMD);
+                pci_read_config_word(hw->pdev, cap + PCI_X_CMD, &cmd);
                 cmd &= ~PCI_X_CMD_MAX_SPLIT;
-                sky2_pci_write16(hw, cap + PCI_X_CMD, cmd);
+                pci_write_config_word(hw->pdev, cap + PCI_X_CMD, cmd);
 
                 sky2->rx_csum = 0;
                 osky2->rx_csum = 0;
@@ -2434,13 +2437,13 @@ static void sky2_hw_intr(struct sky2_hw *hw)
         if (status & (Y2_IS_MST_ERR | Y2_IS_IRQ_STAT)) {
                 u16 pci_err;
 
-                pci_err = sky2_pci_read16(hw, PCI_STATUS);
+                pci_read_config_word(pdev, PCI_STATUS, &pci_err);
                 if (net_ratelimit())
                         dev_err(&pdev->dev, "PCI hardware error (0x%x)\n",
                                 pci_err);
 
-                sky2_pci_write16(hw, PCI_STATUS,
-                                 pci_err | PCI_STATUS_ERROR_BITS);
+                pci_write_config_word(pdev, PCI_STATUS,
+                                      pci_err | PCI_STATUS_ERROR_BITS);
         }
 
         if (status & Y2_IS_PCI_EXP) {
@@ -2694,10 +2697,13 @@ static inline u32 sky2_clk2us(const struct sky2_hw *hw, u32 clk)
 
 static int __devinit sky2_init(struct sky2_hw *hw)
 {
+        int rc;
         u8 t8;
 
-        /* Enable all clocks */
-        sky2_pci_write32(hw, PCI_DEV_REG3, 0);
+        /* Enable all clocks and check for bad PCI access */
+        rc = pci_write_config_dword(hw->pdev, PCI_DEV_REG3, 0);
+        if (rc)
+                return rc;
 
         sky2_write8(hw, B0_CTST, CS_RST_CLR);
 
@@ -2791,10 +2797,9 @@ static void sky2_reset(struct sky2_hw *hw)
         sky2_write8(hw, B0_CTST, CS_RST_CLR);
 
         /* clear PCI errors, if any */
-        status = sky2_pci_read16(hw, PCI_STATUS);
-
-        sky2_pci_write16(hw, PCI_STATUS, status | PCI_STATUS_ERROR_BITS);
-
+        pci_read_config_word(pdev, PCI_STATUS, &status);
+        status |= PCI_STATUS_ERROR_BITS;
+        pci_write_config_word(pdev, PCI_STATUS, status);
 
         sky2_write8(hw, B0_CTST, CS_MRST_CLR);
 
@@ -3606,26 +3611,31 @@ static int sky2_get_eeprom_len(struct net_device *dev)
         struct sky2_port *sky2 = netdev_priv(dev);
         u16 reg2;
 
-        reg2 = sky2_pci_read32(sky2->hw, PCI_DEV_REG2);
+        pci_read_config_word(sky2->hw->pdev, PCI_DEV_REG2, &reg2);
         return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
 }
 
-static u32 sky2_vpd_read(struct sky2_hw *hw, int cap, u16 offset)
+static u32 sky2_vpd_read(struct pci_dev *pdev, int cap, u16 offset)
 {
-        sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset);
+        u32 val;
 
-        while (!(sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F))
-                        cpu_relax();
-        return sky2_pci_read32(hw, cap + PCI_VPD_DATA);
+        pci_write_config_word(pdev, cap + PCI_VPD_ADDR, offset);
+
+        do {
+                pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+        } while (!(offset & PCI_VPD_ADDR_F));
+
+        pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &val);
+        return val;
 }
 
-static void sky2_vpd_write(struct sky2_hw *hw, int cap, u16 offset, u32 val)
+static void sky2_vpd_write(struct pci_dev *pdev, int cap, u16 offset, u32 val)
 {
-        sky2_pci_write32(hw, cap + PCI_VPD_DATA, val);
-        sky2_pci_write16(hw, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
+        pci_write_config_word(pdev, cap + PCI_VPD_DATA, val);
+        pci_write_config_dword(pdev, cap + PCI_VPD_ADDR, offset | PCI_VPD_ADDR_F);
         do {
-                cpu_relax();
-        } while (sky2_pci_read16(hw, cap + PCI_VPD_ADDR) & PCI_VPD_ADDR_F);
+                pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
+        } while (offset & PCI_VPD_ADDR_F);
 }
 
 static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
@@ -3642,7 +3652,7 @@ static int sky2_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom
         eeprom->magic = SKY2_EEPROM_MAGIC;
 
         while (length > 0) {
-                u32 val = sky2_vpd_read(sky2->hw, cap, offset);
+                u32 val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
                 int n = min_t(int, length, sizeof(val));
 
                 memcpy(data, &val, n);
@@ -3672,10 +3682,10 @@ static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom
                 int n = min_t(int, length, sizeof(val));
 
                 if (n < sizeof(val))
-                        val = sky2_vpd_read(sky2->hw, cap, offset);
+                        val = sky2_vpd_read(sky2->hw->pdev, cap, offset);
                 memcpy(&val, data, n);
 
-                sky2_vpd_write(sky2->hw, cap, offset, val);
+                sky2_vpd_write(sky2->hw->pdev, cap, offset, val);
 
                 length -= n;
                 data += n;
@@ -4116,15 +4126,14 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
          */
         {
                 u32 reg;
-                reg = sky2_pci_read32(hw, PCI_DEV_REG2);
+                pci_read_config_dword(pdev,PCI_DEV_REG2, &reg);
                 reg &= ~PCI_REV_DESC;
-                sky2_pci_write32(hw, PCI_DEV_REG2, reg);
+                pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
         }
 #endif
 
         /* ring for status responses */
-        hw->st_le = pci_alloc_consistent(hw->pdev, STATUS_LE_BYTES,
-                                         &hw->st_dma);
+        hw->st_le = pci_alloc_consistent(pdev, STATUS_LE_BYTES, &hw->st_dma);
         if (!hw->st_le)
                 goto err_out_iounmap;
 
@@ -4201,7 +4210,7 @@ err_out_free_netdev:
         free_netdev(dev);
 err_out_free_pci:
         sky2_write8(hw, B0_CTST, CS_RST_SET);
-        pci_free_consistent(hw->pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
+        pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
 err_out_iounmap:
         iounmap(hw->regs);
 err_out_free_hw:
@@ -4312,7 +4321,7 @@ static int sky2_resume(struct pci_dev *pdev)
         if (hw->chip_id == CHIP_ID_YUKON_EX ||
             hw->chip_id == CHIP_ID_YUKON_EC_U ||
             hw->chip_id == CHIP_ID_YUKON_FE_P)
-                sky2_pci_write32(hw, PCI_DEV_REG3, 0);
+                pci_write_config_dword(pdev, PCI_DEV_REG3, 0);
 
         sky2_reset(hw);