[PATCH] sky2: remove pci-express hacks

Eliminate special case tuning for PCI-Express. This code
causes receive hangs and doesn't help performance much anyway.

Signed-off-by: Stephen Hemminger <shemmnger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 52c7b1886314ea7260eb99e62ce872acadc7372e..c6c3275fc5edd54866596b19aabd9323a03bbb67 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -651,12 +651,12 @@ static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, size_t len)
 }
 
 /* Setup Bus Memory Interface */
-static void sky2_qset(struct sky2_hw *hw, u16 q, u32 wm)
+static void sky2_qset(struct sky2_hw *hw, u16 q)
 {
        sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_CLR_RESET);
        sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_OPER_INIT);
        sky2_write32(hw, Q_ADDR(q, Q_CSR), BMU_FIFO_OP_ON);
-       sky2_write32(hw, Q_ADDR(q, Q_WM), wm);
+       sky2_write32(hw, Q_ADDR(q, Q_WM),  BMU_WM_DEFAULT);
 }
 
 /* Setup prefetch unit registers. This is the interface between
@@ -921,7 +921,7 @@ static int sky2_rx_start(struct sky2_port *sky2)
        int i;
 
        sky2->rx_put = sky2->rx_next = 0;
-       sky2_qset(hw, rxq, is_pciex(hw) ? 0x80 : 0x600);
+       sky2_qset(hw, rxq);
        sky2_prefetch_init(hw, rxq, sky2->rx_le_map, RX_LE_SIZE - 1);
 
        rx_set_checksum(sky2);
@@ -1004,7 +1004,7 @@ static int sky2_up(struct net_device *dev)
        sky2_write8(hw, RB_ADDR(port == 0 ? Q_XS1 : Q_XS2, RB_CTRL),
                    RB_RST_SET);
 
-       sky2_qset(hw, txqaddr[port], 0x600);
+       sky2_qset(hw, txqaddr[port]);
        if (hw->chip_id == CHIP_ID_YUKON_EC_U)
                sky2_write16(hw, Q_ADDR(txqaddr[port], Q_AL), 0x1a0);
 
@@ -2148,20 +2148,6 @@ static int sky2_reset(struct sky2_hw *hw)
                sky2_write8(hw, RAM_BUFFER(i, B3_RI_RTO_XS2), SK_RI_TO_53);
        }
 
-       if (is_pciex(hw)) {
-               u16 pctrl;
-
-               /* change Max. Read Request Size to 2048 bytes */
-               pci_read_config_word(hw->pdev, PEX_DEV_CTRL, &pctrl);
-               pctrl &= ~PEX_DC_MAX_RRS_MSK;
-               pctrl |= PEX_DC_MAX_RD_RQ_SIZE(4);
-
-
-               sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
-               pci_write_config_word(hw->pdev, PEX_DEV_CTRL, pctrl);
-               sky2_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
-       }
-
        sky2_write32(hw, B0_HWE_IMSK, Y2_HWE_ALL_MASK);
 
        spin_lock_bh(&hw->phy_lock);

diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 420454a4472410e93a098af90639803da3b1e874..930680f50fca8d51d75a877ba9675cb7a7852062 100644 (file)
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -631,6 +631,8 @@ enum {
        BMU_CLR_RESET   = BMU_FIFO_RST | BMU_OP_OFF | BMU_RST_CLR,
        BMU_OPER_INIT   = BMU_CLR_IRQ_PAR | BMU_CLR_IRQ_CHK | BMU_START |
                          BMU_FIFO_ENA | BMU_OP_ON,
+
+       BMU_WM_DEFAULT = 0x600,
 };
 
 /* Tx BMU Control / Status Registers (Yukon-2) */