diff options
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 217 |
1 files changed, 111 insertions, 106 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 3dc8e88c5188..ea0560484dc7 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]); } /** |