e1000: Support for 82571 and 82572 controllers
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index c062b0a..407abb2 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -398,6 +398,10 @@
case e1000_82547_rev_2:
pba = E1000_PBA_30K;
break;
+ case e1000_82571:
+ case e1000_82572:
+ pba = E1000_PBA_38K;
+ break;
case e1000_82573:
pba = E1000_PBA_12K;
break;
@@ -475,6 +479,7 @@
struct net_device *netdev;
struct e1000_adapter *adapter;
unsigned long mmio_start, mmio_len;
+ uint32_t ctrl_ext;
uint32_t swsm;
static int cards_found = 0;
@@ -688,6 +693,12 @@
/* Let firmware know the driver has taken over */
switch(adapter->hw.mac_type) {
+ case e1000_82571:
+ case e1000_82572:
+ ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
+ E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
+ ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
+ break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,
@@ -732,6 +743,7 @@
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
+ uint32_t ctrl_ext;
uint32_t manc, swsm;
flush_scheduled_work();
@@ -746,6 +758,12 @@
}
switch(adapter->hw.mac_type) {
+ case e1000_82571:
+ case e1000_82572:
+ ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
+ E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
+ ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
+ break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,
@@ -1236,7 +1254,7 @@
rctl |= E1000_RCTL_LPE;
/* Setup buffer sizes */
- if(adapter->hw.mac_type == e1000_82573) {
+ if(adapter->hw.mac_type >= e1000_82571) {
/* We can now specify buffers in 1K increments.
* BSIZE and BSEX are ignored in this case. */
rctl |= adapter->rx_buffer_len << 0x11;
@@ -1352,7 +1370,7 @@
if(adapter->rx_csum == TRUE) {
rxcsum |= E1000_RXCSUM_TUOFL;
- /* Enable 82573 IPv4 payload checksum for UDP fragments
+ /* Enable 82571 IPv4 payload checksum for UDP fragments
* Must be used in conjunction with packet-split. */
if((adapter->hw.mac_type > e1000_82547_rev_2) &&
(adapter->rx_ps)) {
@@ -1608,6 +1626,22 @@
e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
+ /* With 82571 controllers, LAA may be overwritten (with the default)
+ * due to controller reset from the other port. */
+ if (adapter->hw.mac_type == e1000_82571) {
+ /* activate the work around */
+ adapter->hw.laa_is_present = 1;
+
+ /* Hold a copy of the LAA in RAR[14] This is done so that
+ * between the time RAR[0] gets clobbered and the time it
+ * gets fixed (in e1000_watchdog), the actual LAA is in one
+ * of the RARs and no incoming packets directed to this port
+ * are dropped. Eventaully the LAA will be in RAR[0] and
+ * RAR[14] */
+ e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
+ E1000_RAR_ENTRIES - 1);
+ }
+
if(adapter->hw.mac_type == e1000_82542_rev2_0)
e1000_leave_82542_rst(adapter);
@@ -1633,9 +1667,12 @@
unsigned long flags;
uint32_t rctl;
uint32_t hash_value;
- int i;
+ int i, rar_entries = E1000_RAR_ENTRIES;
spin_lock_irqsave(&adapter->tx_lock, flags);
+ /* reserve RAR[14] for LAA over-write work-around */
+ if (adapter->hw.mac_type == e1000_82571)
+ rar_entries--;
/* Check for Promiscuous and All Multicast modes */
@@ -1660,11 +1697,12 @@
/* load the first 14 multicast address into the exact filters 1-14
* RAR 0 is used for the station MAC adddress
* if there are not 14 addresses, go ahead and clear the filters
+ * -- with 82571 controllers only 0-13 entries are filled here
*/
mc_ptr = netdev->mc_list;
- for(i = 1; i < E1000_RAR_ENTRIES; i++) {
- if(mc_ptr) {
+ for(i = 1; i < rar_entries; i++) {
+ if (mc_ptr) {
e1000_rar_set(hw, mc_ptr->dmi_addr, i);
mc_ptr = mc_ptr->next;
} else {
@@ -1848,6 +1886,11 @@
/* Force detection of hung controller every watchdog period */
adapter->detect_tx_hung = TRUE;
+ /* With 82571 controllers, LAA may be overwritten due to controller
+ * reset from the other port. Set the appropriate LAA in RAR[0] */
+ if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
+ e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
+
/* Reset the timer */
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
}
@@ -2269,6 +2312,27 @@
local_irq_restore(flags);
return NETDEV_TX_LOCKED;
}
+#ifdef NETIF_F_TSO
+ /* TSO Workaround for 82571/2 Controllers -- if skb->data
+ * points to just header, pull a few bytes of payload from
+ * frags into skb->data */
+ if (skb_shinfo(skb)->tso_size) {
+ uint8_t hdr_len;
+ hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
+ if (skb->data_len && (hdr_len < (skb->len - skb->data_len)) &&
+ (adapter->hw.mac_type == e1000_82571 ||
+ adapter->hw.mac_type == e1000_82572)) {
+ unsigned int pull_size;
+ pull_size = min((unsigned int)4, skb->data_len);
+ if (!__pskb_pull_tail(skb, pull_size)) {
+ printk(KERN_ERR "__pskb_pull_tail failed.\n");
+ dev_kfree_skb_any(skb);
+ return -EFAULT;
+ }
+ }
+ }
+#endif
+
if(adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) )
e1000_transfer_dhcp_info(adapter, skb);
@@ -2310,7 +2374,7 @@
tx_flags |= E1000_TX_FLAGS_CSUM;
/* Old method was to assume IPv4 packet by default if TSO was enabled.
- * 82573 hardware supports TSO capabilities for IPv6 as well...
+ * 82571 hardware supports TSO capabilities for IPv6 as well...
* no longer assume, we must. */
if(likely(skb->protocol == ntohs(ETH_P_IP)))
tx_flags |= E1000_TX_FLAGS_IPV4;
@@ -2389,9 +2453,18 @@
return -EINVAL;
}
-#define MAX_STD_JUMBO_FRAME_SIZE 9216
+#define MAX_STD_JUMBO_FRAME_SIZE 9234
/* might want this to be bigger enum check... */
- if (adapter->hw.mac_type == e1000_82573 &&
+ /* 82571 controllers limit jumbo frame size to 10500 bytes */
+ if ((adapter->hw.mac_type == e1000_82571 ||
+ adapter->hw.mac_type == e1000_82572) &&
+ max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
+ DPRINTK(PROBE, ERR, "MTU > 9216 bytes not supported "
+ "on 82571 and 82572 controllers.\n");
+ return -EINVAL;
+ }
+
+ if(adapter->hw.mac_type == e1000_82573 &&
max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
DPRINTK(PROBE, ERR, "Jumbo Frames not supported "
"on 82573\n");
@@ -3716,6 +3789,12 @@
}
switch(adapter->hw.mac_type) {
+ case e1000_82571:
+ case e1000_82572:
+ ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
+ E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
+ ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
+ break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,
@@ -3738,6 +3817,7 @@
struct net_device *netdev = pci_get_drvdata(pdev);
struct e1000_adapter *adapter = netdev_priv(netdev);
uint32_t manc, ret_val, swsm;
+ uint32_t ctrl_ext;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
@@ -3763,6 +3843,12 @@
}
switch(adapter->hw.mac_type) {
+ case e1000_82571:
+ case e1000_82572:
+ ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
+ E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
+ ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
+ break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,