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path: root/drivers/net/sky2.c
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Diffstat (limited to 'drivers/net/sky2.c')
-rw-r--r--drivers/net/sky2.c109
1 files changed, 21 insertions, 88 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index ca8160d6822..73260364cba 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -74,7 +74,7 @@
#define TX_RING_SIZE 512
#define TX_DEF_PENDING (TX_RING_SIZE - 1)
#define TX_MIN_PENDING 64
-#define MAX_SKB_TX_LE (4 + 2*MAX_SKB_FRAGS)
+#define MAX_SKB_TX_LE (4 + (sizeof(dma_addr_t)/sizeof(u32))*MAX_SKB_FRAGS)
#define STATUS_RING_SIZE 2048 /* 2 ports * (TX + 2*RX) */
#define STATUS_LE_BYTES (STATUS_RING_SIZE*sizeof(struct sky2_status_le))
@@ -96,10 +96,6 @@ static int copybreak __read_mostly = 256;
module_param(copybreak, int, 0);
MODULE_PARM_DESC(copybreak, "Receive copy threshold");
-static int disable_msi = 0;
-module_param(disable_msi, int, 0);
-MODULE_PARM_DESC(disable_msi, "Disable Message Signaled Interrupt (MSI)");
-
static const struct pci_device_id sky2_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9000) },
{ PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, 0x9E00) },
@@ -626,8 +622,8 @@ static void sky2_mac_init(struct sky2_hw *hw, unsigned port)
/* Configure Rx MAC FIFO */
sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
- sky2_write16(hw, SK_REG(port, RX_GMF_CTRL_T),
- GMF_RX_CTRL_DEF);
+ sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
+ GMF_OPER_ON | GMF_RX_F_FL_ON);
/* Flush Rx MAC FIFO on any flow control or error */
sky2_write16(hw, SK_REG(port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR);
@@ -999,6 +995,10 @@ static int sky2_rx_start(struct sky2_port *sky2)
sky2_rx_add(sky2, re->mapaddr);
}
+ /* Truncate oversize frames */
+ sky2_write16(hw, SK_REG(sky2->port, RX_GMF_TR_THR), sky2->rx_bufsize - 8);
+ sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_TRUNC_ON);
+
/* Tell chip about available buffers */
sky2_write16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX), sky2->rx_put);
sky2->rx_last_put = sky2_read16(hw, Y2_QADDR(rxq, PREF_UNIT_PUT_IDX));
@@ -1149,6 +1149,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
struct sky2_tx_le *le = NULL;
struct tx_ring_info *re;
unsigned i, len;
+ int avail;
dma_addr_t mapping;
u32 addr64;
u16 mss;
@@ -1291,12 +1292,16 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
re->idx = sky2->tx_prod;
le->ctrl |= EOP;
+ avail = tx_avail(sky2);
+ if (mss != 0 || avail < TX_MIN_PENDING) {
+ le->ctrl |= FRC_STAT;
+ if (avail <= MAX_SKB_TX_LE)
+ netif_stop_queue(dev);
+ }
+
sky2_put_idx(hw, txqaddr[sky2->port], sky2->tx_prod,
&sky2->tx_last_put, TX_RING_SIZE);
- if (tx_avail(sky2) <= MAX_SKB_TX_LE)
- netif_stop_queue(dev);
-
out_unlock:
spin_unlock(&sky2->tx_lock);
@@ -1711,10 +1716,12 @@ static void sky2_tx_timeout(struct net_device *dev)
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
-/* Want receive buffer size to be multiple of 64 bits, and incl room for vlan */
+/* Want receive buffer size to be multiple of 64 bits
+ * and incl room for vlan and truncation
+ */
static inline unsigned sky2_buf_size(int mtu)
{
- return roundup(mtu + ETH_HLEN + 4, 8);
+ return roundup(mtu + ETH_HLEN + VLAN_HLEN, 8) + 8;
}
static int sky2_change_mtu(struct net_device *dev, int new_mtu)
@@ -1797,7 +1804,7 @@ static struct sk_buff *sky2_receive(struct sky2_port *sky2,
if (!(status & GMR_FS_RX_OK))
goto resubmit;
- if ((status >> 16) != length || length > sky2->rx_bufsize)
+ if (length > sky2->netdev->mtu + ETH_HLEN)
goto oversize;
if (length < copybreak) {
@@ -3126,61 +3133,6 @@ static void __devinit sky2_show_addr(struct net_device *dev)
dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
}
-/* Handle software interrupt used during MSI test */
-static irqreturn_t __devinit sky2_test_intr(int irq, void *dev_id,
- struct pt_regs *regs)
-{
- struct sky2_hw *hw = dev_id;
- u32 status = sky2_read32(hw, B0_Y2_SP_ISRC2);
-
- if (status == 0)
- return IRQ_NONE;
-
- if (status & Y2_IS_IRQ_SW) {
- sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
- hw->msi = 1;
- }
- sky2_write32(hw, B0_Y2_SP_ICR, 2);
-
- sky2_read32(hw, B0_IMSK);
- return IRQ_HANDLED;
-}
-
-/* Test interrupt path by forcing a a software IRQ */
-static int __devinit sky2_test_msi(struct sky2_hw *hw)
-{
- struct pci_dev *pdev = hw->pdev;
- int i, err;
-
- sky2_write32(hw, B0_IMSK, Y2_IS_IRQ_SW);
-
- err = request_irq(pdev->irq, sky2_test_intr, SA_SHIRQ, DRV_NAME, hw);
- if (err) {
- printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
- pci_name(pdev), pdev->irq);
- return err;
- }
-
- sky2_write8(hw, B0_CTST, CS_ST_SW_IRQ);
- wmb();
-
- for (i = 0; i < 10; i++) {
- barrier();
- if (hw->msi)
- goto found;
- mdelay(1);
- }
-
- err = -EOPNOTSUPP;
- sky2_write8(hw, B0_CTST, CS_CL_SW_IRQ);
- found:
- sky2_write32(hw, B0_IMSK, 0);
-
- free_irq(pdev->irq, hw);
-
- return err;
-}
-
static int __devinit sky2_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@@ -3302,22 +3254,7 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
}
}
- if (!disable_msi && pci_enable_msi(pdev) == 0) {
- err = sky2_test_msi(hw);
- if (err == -EOPNOTSUPP) {
- /* MSI test failed, go back to INTx mode */
- printk(KERN_WARNING PFX "%s: No interrupt was generated using MSI, "
- "switching to INTx mode. Please report this failure to "
- "the PCI maintainer and include system chipset information.\n",
- pci_name(pdev));
- pci_disable_msi(pdev);
- }
- else if (err)
- goto err_out_unregister;
- }
-
- err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ | SA_SAMPLE_RANDOM,
- DRV_NAME, hw);
+ err = request_irq(pdev->irq, sky2_intr, SA_SHIRQ, DRV_NAME, hw);
if (err) {
printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
pci_name(pdev), pdev->irq);
@@ -3332,8 +3269,6 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
return 0;
err_out_unregister:
- if (hw->msi)
- pci_disable_msi(pdev);
if (dev1) {
unregister_netdev(dev1);
free_netdev(dev1);
@@ -3376,8 +3311,6 @@ static void __devexit sky2_remove(struct pci_dev *pdev)
sky2_read8(hw, B0_CTST);
free_irq(pdev->irq, hw);
- if (hw->msi)
- pci_disable_msi(pdev);
pci_free_consistent(pdev, STATUS_LE_BYTES, hw->st_le, hw->st_dma);
pci_release_regions(pdev);
pci_disable_device(pdev);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-01 15:32:21 +0000