diff options
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 109 |
1 files changed, 21 insertions, 88 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index ca8160d68229..73260364cba3 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); |
