aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/igb
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/igb')
-rw-r--r--drivers/net/igb/igb_main.c217
1 files changed, 111 insertions, 106 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 3dc8e88c518..ea0560484dc 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -82,6 +82,7 @@ static int igb_setup_all_tx_resources(struct igb_adapter *);
static int igb_setup_all_rx_resources(struct igb_adapter *);
static void igb_free_all_tx_resources(struct igb_adapter *);
static void igb_free_all_rx_resources(struct igb_adapter *);
+static void igb_setup_mrqc(struct igb_adapter *);
void igb_update_stats(struct igb_adapter *);
static int igb_probe(struct pci_dev *, const struct pci_device_id *);
static void __devexit igb_remove(struct pci_dev *pdev);
@@ -1115,6 +1116,7 @@ static void igb_configure(struct igb_adapter *adapter)
igb_restore_vlan(adapter);
igb_setup_tctl(adapter);
+ igb_setup_mrqc(adapter);
igb_setup_rctl(adapter);
igb_configure_tx(adapter);
@@ -1157,7 +1159,6 @@ int igb_up(struct igb_adapter *adapter)
if (adapter->msix_entries)
igb_configure_msix(adapter);
- igb_vmm_control(adapter);
igb_set_vmolr(hw, adapter->vfs_allocated_count);
/* Clear any pending interrupts. */
@@ -1928,7 +1929,6 @@ static int igb_open(struct net_device *netdev)
* clean_rx handler before we do so. */
igb_configure(adapter);
- igb_vmm_control(adapter);
igb_set_vmolr(hw, adapter->vfs_allocated_count);
err = igb_request_irq(adapter);
@@ -2217,6 +2217,111 @@ static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
}
/**
+ * igb_setup_mrqc - configure the multiple receive queue control registers
+ * @adapter: Board private structure
+ **/
+static void igb_setup_mrqc(struct igb_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 mrqc, rxcsum;
+ u32 j, num_rx_queues, shift = 0, shift2 = 0;
+ union e1000_reta {
+ u32 dword;
+ u8 bytes[4];
+ } reta;
+ static const u8 rsshash[40] = {
+ 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 0x41, 0x67,
+ 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 0xd0, 0xca, 0x2b, 0xcb,
+ 0xae, 0x7b, 0x30, 0xb4, 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30,
+ 0xf2, 0x0c, 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa };
+
+ /* Fill out hash function seeds */
+ for (j = 0; j < 10; j++) {
+ u32 rsskey = rsshash[(j * 4)];
+ rsskey |= rsshash[(j * 4) + 1] << 8;
+ rsskey |= rsshash[(j * 4) + 2] << 16;
+ rsskey |= rsshash[(j * 4) + 3] << 24;
+ array_wr32(E1000_RSSRK(0), j, rsskey);
+ }
+
+ num_rx_queues = adapter->num_rx_queues;
+
+ if (adapter->vfs_allocated_count) {
+ /* 82575 and 82576 supports 2 RSS queues for VMDq */
+ switch (hw->mac.type) {
+ case e1000_82576:
+ shift = 3;
+ num_rx_queues = 2;
+ break;
+ case e1000_82575:
+ shift = 2;
+ shift2 = 6;
+ default:
+ break;
+ }
+ } else {
+ if (hw->mac.type == e1000_82575)
+ shift = 6;
+ }
+
+ for (j = 0; j < (32 * 4); j++) {
+ reta.bytes[j & 3] = (j % num_rx_queues) << shift;
+ if (shift2)
+ reta.bytes[j & 3] |= num_rx_queues << shift2;
+ if ((j & 3) == 3)
+ wr32(E1000_RETA(j >> 2), reta.dword);
+ }
+
+ /*
+ * Disable raw packet checksumming so that RSS hash is placed in
+ * descriptor on writeback. No need to enable TCP/UDP/IP checksum
+ * offloads as they are enabled by default
+ */
+ rxcsum = rd32(E1000_RXCSUM);
+ rxcsum |= E1000_RXCSUM_PCSD;
+
+ if (adapter->hw.mac.type >= e1000_82576)
+ /* Enable Receive Checksum Offload for SCTP */
+ rxcsum |= E1000_RXCSUM_CRCOFL;
+
+ /* Don't need to set TUOFL or IPOFL, they default to 1 */
+ wr32(E1000_RXCSUM, rxcsum);
+
+ /* If VMDq is enabled then we set the appropriate mode for that, else
+ * we default to RSS so that an RSS hash is calculated per packet even
+ * if we are only using one queue */
+ if (adapter->vfs_allocated_count) {
+ if (hw->mac.type > e1000_82575) {
+ /* Set the default pool for the PF's first queue */
+ u32 vtctl = rd32(E1000_VT_CTL);
+ vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK |
+ E1000_VT_CTL_DISABLE_DEF_POOL);
+ vtctl |= adapter->vfs_allocated_count <<
+ E1000_VT_CTL_DEFAULT_POOL_SHIFT;
+ wr32(E1000_VT_CTL, vtctl);
+ }
+ if (adapter->num_rx_queues > 1)
+ mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q;
+ else
+ mrqc = E1000_MRQC_ENABLE_VMDQ;
+ } else {
+ mrqc = E1000_MRQC_ENABLE_RSS_4Q;
+ }
+ igb_vmm_control(adapter);
+
+ mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
+ E1000_MRQC_RSS_FIELD_IPV4_TCP);
+ mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
+ E1000_MRQC_RSS_FIELD_IPV6_TCP);
+ mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
+ E1000_MRQC_RSS_FIELD_IPV6_UDP);
+ mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
+ E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
+
+ wr32(E1000_MRQC, mrqc);
+}
+
+/**
* igb_setup_rctl - configure the receive control registers
* @adapter: Board private structure
**/
@@ -2298,29 +2403,6 @@ static void igb_rlpml_set(struct igb_adapter *adapter)
}
/**
- * igb_configure_vt_default_pool - Configure VT default pool
- * @adapter: board private structure
- *
- * Configure the default pool
- **/
-static void igb_configure_vt_default_pool(struct igb_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u16 pf_id = adapter->vfs_allocated_count;
- u32 vtctl;
-
- /* not in sr-iov mode - do nothing */
- if (!pf_id)
- return;
-
- vtctl = rd32(E1000_VT_CTL);
- vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK |
- E1000_VT_CTL_DISABLE_DEF_POOL);
- vtctl |= pf_id << E1000_VT_CTL_DEFAULT_POOL_SHIFT;
- wr32(E1000_VT_CTL, vtctl);
-}
-
-/**
* igb_configure_rx_ring - Configure a receive ring after Reset
* @adapter: board private structure
* @ring: receive ring to be configured
@@ -2391,85 +2473,8 @@ static void igb_configure_rx_ring(struct igb_adapter *adapter,
**/
static void igb_configure_rx(struct igb_adapter *adapter)
{
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl, rxcsum;
int i;
- /* disable receives while setting up the descriptors */
- rctl = rd32(E1000_RCTL);
- wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
- wrfl();
- mdelay(10);
-
- if (adapter->itr_setting > 3)
- wr32(E1000_ITR, adapter->itr);
-
- /* Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring */
- for (i = 0; i < adapter->num_rx_queues; i++)
- igb_configure_rx_ring(adapter, &adapter->rx_ring[i]);
-
- if (adapter->num_rx_queues > 1) {
- u32 random[10];
- u32 mrqc;
- u32 j, shift;
- union e1000_reta {
- u32 dword;
- u8 bytes[4];
- } reta;
-
- get_random_bytes(&random[0], 40);
-
- if (hw->mac.type >= e1000_82576)
- shift = 0;
- else
- shift = 6;
- for (j = 0; j < (32 * 4); j++) {
- reta.bytes[j & 3] =
- adapter->rx_ring[(j % adapter->num_rx_queues)].reg_idx << shift;
- if ((j & 3) == 3)
- writel(reta.dword,
- hw->hw_addr + E1000_RETA(0) + (j & ~3));
- }
- if (adapter->vfs_allocated_count)
- mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q;
- else
- mrqc = E1000_MRQC_ENABLE_RSS_4Q;
-
- /* Fill out hash function seeds */
- for (j = 0; j < 10; j++)
- array_wr32(E1000_RSSRK(0), j, random[j]);
-
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
- E1000_MRQC_RSS_FIELD_IPV4_TCP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
- E1000_MRQC_RSS_FIELD_IPV6_TCP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
- E1000_MRQC_RSS_FIELD_IPV6_UDP);
- mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
- E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
-
- wr32(E1000_MRQC, mrqc);
- } else if (adapter->vfs_allocated_count) {
- /* Enable multi-queue for sr-iov */
- wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ);
- }
-
- /* Enable Receive Checksum Offload for TCP and UDP */
- rxcsum = rd32(E1000_RXCSUM);
- /* Disable raw packet checksumming */
- rxcsum |= E1000_RXCSUM_PCSD;
-
- if (adapter->hw.mac.type == e1000_82576)
- /* Enable Receive Checksum Offload for SCTP */
- rxcsum |= E1000_RXCSUM_CRCOFL;
-
- /* Don't need to set TUOFL or IPOFL, they default to 1 */
- wr32(E1000_RXCSUM, rxcsum);
-
- /* Set the default pool for the PF's first queue */
- igb_configure_vt_default_pool(adapter);
-
/* set UTA to appropriate mode */
igb_set_uta(adapter);
@@ -2477,10 +2482,10 @@ static void igb_configure_rx(struct igb_adapter *adapter)
igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0,
adapter->vfs_allocated_count);
- igb_rlpml_set(adapter);
-
- /* Enable Receives */
- wr32(E1000_RCTL, rctl);
+ /* Setup the HW Rx Head and Tail Descriptor Pointers and
+ * the Base and Length of the Rx Descriptor Ring */
+ for (i = 0; i < adapter->num_rx_queues; i++)
+ igb_configure_rx_ring(adapter, &adapter->rx_ring[i]);
}
/**
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-05 00:40:28 +0000