[PATCH] sky2: set lower pause threshold to prevent overrun

[linux-2.6-omap-h63xx.git] / drivers / net / sky2.c

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 459c845d664873e771a63f874489a030ed05602e..c10e7f5faa5f59be42894b51bf6a74e76c812714 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -683,7 +683,7 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
        sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
 
        if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
-               sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
+               sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 512/8);
                sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
                if (hw->dev[port]->mtu > ETH_DATA_LEN) {
                        /* set Tx GMAC FIFO Almost Empty Threshold */
@@ -1907,7 +1907,7 @@ static struct sk_buff *receive_copy(struct sky2_port *sky2,
                pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
                                               length, PCI_DMA_FROMDEVICE);
                re->skb->ip_summed = CHECKSUM_NONE;
-               __skb_put(skb, length);
+               skb_put(skb, length);
        }
        return skb;
 }
@@ -1970,7 +1970,7 @@ static struct sk_buff *receive_new(struct sky2_port *sky2,
        if (skb_shinfo(skb)->nr_frags)
                skb_put_frags(skb, hdr_space, length);
        else
-               skb_put(skb, hdr_space);
+               skb_put(skb, length);
        return skb;
 }
 
@@ -2220,8 +2220,7 @@ static void sky2_hw_intr(struct sky2_hw *hw)
                /* PCI-Express uncorrectable Error occurred */
                u32 pex_err;
 
-               pex_err = sky2_pci_read32(hw,
-                                         hw->err_cap + PCI_ERR_UNCOR_STATUS);
+               pex_err = sky2_pci_read32(hw, PEX_UNC_ERR_STAT);
 
                if (net_ratelimit())
                        printk(KERN_ERR PFX "%s: pci express error (0x%x)\n",
@@ -2229,20 +2228,15 @@ static void sky2_hw_intr(struct sky2_hw *hw)
 
                /* clear the interrupt */
                sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
-               sky2_pci_write32(hw,
-                                hw->err_cap + PCI_ERR_UNCOR_STATUS,
-                                0xffffffffUL);
+               sky2_pci_write32(hw, PEX_UNC_ERR_STAT,
+                                      0xffffffffUL);
                sky2_write32(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
 
-
-               /* In case of fatal error mask off to keep from getting stuck */
-               if (pex_err & (PCI_ERR_UNC_POISON_TLP | PCI_ERR_UNC_FCP
-                              | PCI_ERR_UNC_DLP)) {
+               if (pex_err & PEX_FATAL_ERRORS) {
                        u32 hwmsk = sky2_read32(hw, B0_HWE_IMSK);
                        hwmsk &= ~Y2_IS_PCI_EXP;
                        sky2_write32(hw, B0_HWE_IMSK, hwmsk);
                }
-
        }
 
        if (status & Y2_HWE_L1_MASK)
@@ -2423,7 +2417,6 @@ static int sky2_reset(struct sky2_hw *hw)
        u16 status;
        u8 t8;
        int i;
-       u32 msk;
 
        sky2_write8(hw, B0_CTST, CS_RST_CLR);
 
@@ -2464,13 +2457,9 @@ static int sky2_reset(struct sky2_hw *hw)
        sky2_write8(hw, B0_CTST, CS_MRST_CLR);
 
        /* clear any PEX errors */
-       if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP)) {
-               hw->err_cap = pci_find_ext_capability(hw->pdev, PCI_EXT_CAP_ID_ERR);
-               if (hw->err_cap)
-                       sky2_pci_write32(hw,
-                                        hw->err_cap + PCI_ERR_UNCOR_STATUS,
-                                        0xffffffffUL);
-       }
+       if (pci_find_capability(hw->pdev, PCI_CAP_ID_EXP))
+               sky2_pci_write32(hw, PEX_UNC_ERR_STAT, 0xffffffffUL);
+
 
        hw->pmd_type = sky2_read8(hw, B2_PMD_TYP);
        hw->ports = 1;
@@ -2527,10 +2516,7 @@ static int sky2_reset(struct sky2_hw *hw)
                sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
        }
 
-       msk = Y2_HWE_ALL_MASK;
-       if (!hw->err_cap)
-               msk &= ~Y2_IS_PCI_EXP;
-       sky2_write32(hw, B0_HWE_IMSK, msk);
+       sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
 
        for (i = 0; i < hw->ports; i++)
                sky2_gmac_reset(hw, i);