diff options
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 174 |
1 files changed, 159 insertions, 15 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 0dcc0c109b9..c7c7eeba336 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -122,6 +122,10 @@ static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); static void igb_vlan_rx_add_vid(struct net_device *, u16); static void igb_vlan_rx_kill_vid(struct net_device *, u16); static void igb_restore_vlan(struct igb_adapter *); +static inline void igb_set_rah_pool(struct e1000_hw *, int , int); +static void igb_set_mc_list_pools(struct igb_adapter *, int, u16); +static inline void igb_set_vmolr(struct e1000_hw *, int); +static inline void igb_set_vf_rlpml(struct igb_adapter *, int, int); static int igb_suspend(struct pci_dev *, pm_message_t); #ifdef CONFIG_PM @@ -888,6 +892,9 @@ int igb_up(struct igb_adapter *adapter) if (adapter->msix_entries) igb_configure_msix(adapter); + igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); + igb_set_vmolr(hw, adapter->vfs_allocated_count); + /* Clear any pending interrupts. */ rd32(E1000_ICR); igb_irq_enable(adapter); @@ -1617,6 +1624,9 @@ static int igb_open(struct net_device *netdev) * clean_rx handler before we do so. */ igb_configure(adapter); + igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); + igb_set_vmolr(hw, adapter->vfs_allocated_count); + err = igb_request_irq(adapter); if (err) goto err_req_irq; @@ -1797,10 +1807,11 @@ static void igb_configure_tx(struct igb_adapter *adapter) wr32(E1000_DCA_TXCTRL(j), txctrl); } - /* Use the default values for the Tx Inter Packet Gap (IPG) timer */ + /* disable queue 0 to prevent tail bump w/o re-configuration */ + if (adapter->vfs_allocated_count) + wr32(E1000_TXDCTL(0), 0); /* Program the Transmit Control Register */ - tctl = rd32(E1000_TCTL); tctl &= ~E1000_TCTL_CT; tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | @@ -1954,6 +1965,30 @@ static void igb_setup_rctl(struct igb_adapter *adapter) srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; } + /* Attention!!! For SR-IOV PF driver operations you must enable + * queue drop for all VF and PF queues to prevent head of line blocking + * if an un-trusted VF does not provide descriptors to hardware. + */ + if (adapter->vfs_allocated_count) { + u32 vmolr; + + j = adapter->rx_ring[0].reg_idx; + + /* set all queue drop enable bits */ + wr32(E1000_QDE, ALL_QUEUES); + srrctl |= E1000_SRRCTL_DROP_EN; + + /* disable queue 0 to prevent tail write w/o re-config */ + wr32(E1000_RXDCTL(0), 0); + + vmolr = rd32(E1000_VMOLR(j)); + if (rctl & E1000_RCTL_LPE) + vmolr |= E1000_VMOLR_LPE; + if (adapter->num_rx_queues > 0) + vmolr |= E1000_VMOLR_RSSE; + wr32(E1000_VMOLR(j), vmolr); + } + for (i = 0; i < adapter->num_rx_queues; i++) { j = adapter->rx_ring[i].reg_idx; wr32(E1000_SRRCTL(j), srrctl); @@ -1963,6 +1998,54 @@ static void igb_setup_rctl(struct igb_adapter *adapter) } /** + * igb_rlpml_set - set maximum receive packet size + * @adapter: board private structure + * + * Configure maximum receivable packet size. + **/ +static void igb_rlpml_set(struct igb_adapter *adapter) +{ + u32 max_frame_size = adapter->max_frame_size; + struct e1000_hw *hw = &adapter->hw; + u16 pf_id = adapter->vfs_allocated_count; + + if (adapter->vlgrp) + max_frame_size += VLAN_TAG_SIZE; + + /* if vfs are enabled we set RLPML to the largest possible request + * size and set the VMOLR RLPML to the size we need */ + if (pf_id) { + igb_set_vf_rlpml(adapter, max_frame_size, pf_id); + max_frame_size = MAX_STD_JUMBO_FRAME_SIZE + VLAN_TAG_SIZE; + } + + wr32(E1000_RLPML, max_frame_size); +} + +/** + * 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 - Configure receive Unit after Reset * @adapter: board private structure * @@ -2033,8 +2116,10 @@ static void igb_configure_rx(struct igb_adapter *adapter) writel(reta.dword, hw->hw_addr + E1000_RETA(0) + (j & ~3)); } - - mrqc = E1000_MRQC_ENABLE_RSS_4Q; + 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++) @@ -2059,6 +2144,9 @@ static void igb_configure_rx(struct igb_adapter *adapter) rxcsum |= E1000_RXCSUM_PCSD; wr32(E1000_RXCSUM, rxcsum); } else { + /* Enable multi-queue for sr-iov */ + if (adapter->vfs_allocated_count) + wr32(E1000_MRQC, E1000_MRQC_ENABLE_VMDQ); /* Enable Receive Checksum Offload for TCP and UDP */ rxcsum = rd32(E1000_RXCSUM); if (adapter->rx_csum) @@ -2069,11 +2157,10 @@ static void igb_configure_rx(struct igb_adapter *adapter) wr32(E1000_RXCSUM, rxcsum); } - if (adapter->vlgrp) - wr32(E1000_RLPML, - adapter->max_frame_size + VLAN_TAG_SIZE); - else - wr32(E1000_RLPML, adapter->max_frame_size); + /* Set the default pool for the PF's first queue */ + igb_configure_vt_default_pool(adapter); + + igb_rlpml_set(adapter); /* Enable Receives */ wr32(E1000_RCTL, rctl); @@ -2303,6 +2390,8 @@ static int igb_set_mac(struct net_device *netdev, void *p) hw->mac.ops.rar_set(hw, hw->mac.addr, 0); + igb_set_rah_pool(hw, adapter->vfs_allocated_count, 0); + return 0; } @@ -2362,7 +2451,11 @@ static void igb_set_multi(struct net_device *netdev) memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN); mc_ptr = mc_ptr->next; } - igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count); + igb_update_mc_addr_list(hw, mta_list, i, + adapter->vfs_allocated_count + 1, + mac->rar_entry_count); + + igb_set_mc_list_pools(adapter, i, mac->rar_entry_count); kfree(mta_list); } @@ -3222,7 +3315,6 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) return -EINVAL; } -#define MAX_STD_JUMBO_FRAME_SIZE 9234 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n"); return -EINVAL; @@ -3256,6 +3348,12 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) #else adapter->rx_buffer_len = PAGE_SIZE / 2; #endif + + /* if sr-iov is enabled we need to force buffer size to 1K or larger */ + if (adapter->vfs_allocated_count && + (adapter->rx_buffer_len < IGB_RXBUFFER_1024)) + adapter->rx_buffer_len = IGB_RXBUFFER_1024; + /* adjust allocation if LPE protects us, and we aren't using SBP */ if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)) @@ -4462,8 +4560,6 @@ static void igb_vlan_rx_register(struct net_device *netdev, rctl &= ~E1000_RCTL_CFIEN; wr32(E1000_RCTL, rctl); igb_update_mng_vlan(adapter); - wr32(E1000_RLPML, - adapter->max_frame_size + VLAN_TAG_SIZE); } else { /* disable VLAN tag insert/strip */ ctrl = rd32(E1000_CTRL); @@ -4474,10 +4570,10 @@ static void igb_vlan_rx_register(struct net_device *netdev, igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; } - wr32(E1000_RLPML, - adapter->max_frame_size); } + igb_rlpml_set(adapter); + if (!test_bit(__IGB_DOWN, &adapter->state)) igb_irq_enable(adapter); } @@ -4841,4 +4937,52 @@ static void igb_io_resume(struct pci_dev *pdev) igb_get_hw_control(adapter); } +static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn) +{ + u32 reg_data; + + reg_data = rd32(E1000_VMOLR(vfn)); + reg_data |= E1000_VMOLR_BAM | /* Accept broadcast */ + E1000_VMOLR_ROPE | /* Accept packets matched in UTA */ + E1000_VMOLR_ROMPE | /* Accept packets matched in MTA */ + E1000_VMOLR_AUPE | /* Accept untagged packets */ + E1000_VMOLR_STRVLAN; /* Strip vlan tags */ + wr32(E1000_VMOLR(vfn), reg_data); +} + +static inline void igb_set_vf_rlpml(struct igb_adapter *adapter, int size, + int vfn) +{ + struct e1000_hw *hw = &adapter->hw; + u32 vmolr; + + vmolr = rd32(E1000_VMOLR(vfn)); + vmolr &= ~E1000_VMOLR_RLPML_MASK; + vmolr |= size | E1000_VMOLR_LPE; + wr32(E1000_VMOLR(vfn), vmolr); +} + +static inline void igb_set_rah_pool(struct e1000_hw *hw, int pool, int entry) +{ + u32 reg_data; + + reg_data = rd32(E1000_RAH(entry)); + reg_data &= ~E1000_RAH_POOL_MASK; + reg_data |= E1000_RAH_POOL_1 << pool;; + wr32(E1000_RAH(entry), reg_data); +} + +static void igb_set_mc_list_pools(struct igb_adapter *adapter, + int entry_count, u16 total_rar_filters) +{ + struct e1000_hw *hw = &adapter->hw; + int i = adapter->vfs_allocated_count + 1; + + if ((i + entry_count) < total_rar_filters) + total_rar_filters = i + entry_count; + + for (; i < total_rar_filters; i++) + igb_set_rah_pool(hw, adapter->vfs_allocated_count, i); +} + /* igb_main.c */ |