#include <linux/compiler.h>
#include <linux/delay.h>
#include <linux/mii.h>
-#include <linux/interrupt.h>
#include <net/checksum.h>
#include <asm/atomic.h>
struct atl1_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
- hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+ hw->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
hw->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
adapter->wol = 0;
{
struct atl1_adapter *adapter = netdev_priv(netdev);
int old_mtu = netdev->mtu;
- int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+ int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
(max_frame > MAX_JUMBO_FRAME_SIZE)) {
/* set Interrupt Clear Timer */
iowrite16(adapter->ict, hw->hw_addr + REG_CMBDISDMA_TIMER);
- /* set MTU, 4 : VLAN */
- iowrite32(hw->max_frame_size + 4, hw->hw_addr + REG_MTU);
+ /* set max frame size hw will accept */
+ iowrite32(hw->max_frame_size, hw->hw_addr + REG_MTU);
/* jumbo size & rrd retirement timer */
value = (((u32) hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK)
if (count) {
u32 tpd_next_to_use;
u32 rfd_next_to_use;
- u32 rrd_next_to_clean;
spin_lock(&adapter->mb_lock);
unsigned int f;
u16 tpd_next_to_use;
u16 proto_hdr_len;
- u16 i, m, len12;
+ u16 len12;
first_buf_len -= skb->data_len;
nr_frags = skb_shinfo(skb)->nr_frags;
tpd_next_to_use = 0;
if (first_buf_len > proto_hdr_len) {
+ int i, m;
+
len12 = first_buf_len - proto_hdr_len;
m = (len12 + ATL1_MAX_TX_BUF_LEN - 1) /
ATL1_MAX_TX_BUF_LEN;
return err;
/*
- * 64-bit DMA currently has data corruption problems, so let's just
- * use 32-bit DMA for now. This is a big hack that is probably wrong.
+ * The atl1 chip can DMA to 64-bit addresses, but it uses a single
+ * shared register for the high 32 bits, so only a single, aligned,
+ * 4 GB physical address range can be used at a time.
+ *
+ * Supporting 64-bit DMA on this hardware is more trouble than it's
+ * worth. It is far easier to limit to 32-bit DMA than update
+ * various kernel subsystems to support the mechanics required by a
+ * fixed-high-32-bit system.
*/
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
err = -ENOMEM;
goto err_alloc_etherdev;
}
- SET_MODULE_OWNER(netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);