diff options
Diffstat (limited to 'sys/dev/ixgbe/if_ixv.c')
-rw-r--r-- | sys/dev/ixgbe/if_ixv.c | 141 |
1 files changed, 116 insertions, 25 deletions
diff --git a/sys/dev/ixgbe/if_ixv.c b/sys/dev/ixgbe/if_ixv.c index 0d0393c..a3971cc 100644 --- a/sys/dev/ixgbe/if_ixv.c +++ b/sys/dev/ixgbe/if_ixv.c @@ -43,7 +43,7 @@ /********************************************************************* * Driver version *********************************************************************/ -char ixv_driver_version[] = "1.2.5"; +char ixv_driver_version[] = "1.4.0"; /********************************************************************* * PCI Device ID Table @@ -126,6 +126,18 @@ static void ixv_msix_mbx(void *); static void ixv_handle_que(void *, int); static void ixv_handle_mbx(void *, int); +#ifdef DEV_NETMAP +/* + * This is defined in <dev/netmap/ixgbe_netmap.h>, which is included by + * if_ix.c. + */ +extern void ixgbe_netmap_attach(struct adapter *adapter); + +#include <net/netmap.h> +#include <sys/selinfo.h> +#include <dev/netmap/netmap_kern.h> +#endif /* DEV_NETMAP */ + /********************************************************************* * FreeBSD Device Interface Entry Points *********************************************************************/ @@ -147,12 +159,19 @@ devclass_t ixv_devclass; DRIVER_MODULE(ixv, pci, ixv_driver, ixv_devclass, 0, 0); MODULE_DEPEND(ixv, pci, 1, 1, 1); MODULE_DEPEND(ixv, ether, 1, 1, 1); +#ifdef DEV_NETMAP +MODULE_DEPEND(ix, netmap, 1, 1, 1); +#endif /* DEV_NETMAP */ /* XXX depend on 'ix' ? */ /* ** TUNEABLE PARAMETERS: */ +/* Number of Queues - do not exceed MSIX vectors - 1 */ +static int ixv_num_queues = 1; +TUNABLE_INT("hw.ixv.num_queues", &ixv_num_queues); + /* ** AIM: Adaptive Interrupt Moderation ** which means that the interrupt rate @@ -312,6 +331,15 @@ ixv_attach(device_t dev) "max number of tx packets to process", &adapter->tx_process_limit, ixv_tx_process_limit); + /* Sysctls for limiting the amount of work done in the taskqueues */ + ixv_set_sysctl_value(adapter, "rx_processing_limit", + "max number of rx packets to process", + &adapter->rx_process_limit, ixv_rx_process_limit); + + ixv_set_sysctl_value(adapter, "tx_processing_limit", + "max number of tx packets to process", + &adapter->tx_process_limit, ixv_tx_process_limit); + /* Do descriptor calc and sanity checks */ if (((ixv_txd * sizeof(union ixgbe_adv_tx_desc)) % DBA_ALIGN) != 0 || ixv_txd < MIN_TXD || ixv_txd > MAX_TXD) { @@ -349,6 +377,11 @@ ixv_attach(device_t dev) ixgbe_reset_hw(hw); + /* Get the Mailbox API version */ + device_printf(dev,"MBX API %d negotiation: %d\n", + ixgbe_mbox_api_11, + ixgbevf_negotiate_api_version(hw, ixgbe_mbox_api_11)); + error = ixgbe_init_hw(hw); if (error) { device_printf(dev,"Hardware Initialization Failure\n"); @@ -383,6 +416,9 @@ ixv_attach(device_t dev) adapter->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig, ixv_unregister_vlan, adapter, EVENTHANDLER_PRI_FIRST); +#ifdef DEV_NETMAP + ixgbe_netmap_attach(adapter); +#endif /* DEV_NETMAP */ INIT_DEBUGOUT("ixv_attach: end"); return (0); @@ -446,6 +482,9 @@ ixv_detach(device_t dev) ether_ifdetach(adapter->ifp); callout_drain(&adapter->timer); +#ifdef DEV_NETMAP + netmap_detach(adapter->ifp); +#endif /* DEV_NETMAP */ ixv_free_pci_resources(adapter); bus_generic_detach(dev); if_free(adapter->ifp); @@ -1321,10 +1360,13 @@ static int ixv_setup_msix(struct adapter *adapter) { device_t dev = adapter->dev; - int rid, want; + int rid, want, msgs; - /* First try MSI/X */ + /* Must have at least 2 MSIX vectors */ + msgs = pci_msix_count(dev); + if (msgs < 2) + goto out; rid = PCIR_BAR(3); adapter->msix_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); @@ -1335,11 +1377,16 @@ ixv_setup_msix(struct adapter *adapter) } /* - ** Want two vectors: one for a queue, + ** Want vectors for the queues, ** plus an additional for mailbox. */ - want = 2; - if ((pci_alloc_msix(dev, &want) == 0) && (want == 2)) { + want = adapter->num_queues + 1; + if (want > msgs) { + want = msgs; + adapter->num_queues = msgs - 1; + } else + msgs = want; + if ((pci_alloc_msix(dev, &msgs) == 0) && (msgs == want)) { device_printf(adapter->dev, "Using MSIX interrupts with %d vectors\n", want); return (want); @@ -1378,7 +1425,9 @@ ixv_allocate_pci_resources(struct adapter *adapter) rman_get_bushandle(adapter->pci_mem); adapter->hw.hw_addr = (u8 *) &adapter->osdep.mem_bus_space_handle; - adapter->num_queues = 1; + /* Pick up the tuneable queues */ + adapter->num_queues = ixv_num_queues; + adapter->hw.back = &adapter->osdep; /* @@ -1596,32 +1645,41 @@ ixv_initialize_receive_units(struct adapter *adapter) { struct rx_ring *rxr = adapter->rx_rings; struct ixgbe_hw *hw = &adapter->hw; - struct ifnet *ifp = adapter->ifp; - u32 bufsz, fctrl, rxcsum, hlreg; - - - /* Enable broadcasts */ - fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); - fctrl |= IXGBE_FCTRL_BAM; - fctrl |= IXGBE_FCTRL_DPF; - fctrl |= IXGBE_FCTRL_PMCF; - IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); + struct ifnet *ifp = adapter->ifp; + u32 bufsz, rxcsum, psrtype; + int max_frame; - /* Set for Jumbo Frames? */ - hlreg = IXGBE_READ_REG(hw, IXGBE_HLREG0); - if (ifp->if_mtu > ETHERMTU) { - hlreg |= IXGBE_HLREG0_JUMBOEN; + if (ifp->if_mtu > ETHERMTU) bufsz = 4096 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; - } else { - hlreg &= ~IXGBE_HLREG0_JUMBOEN; + else bufsz = 2048 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; - } - IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg); + + psrtype = IXGBE_PSRTYPE_TCPHDR | IXGBE_PSRTYPE_UDPHDR | + IXGBE_PSRTYPE_IPV4HDR | IXGBE_PSRTYPE_IPV6HDR | + IXGBE_PSRTYPE_L2HDR; + + IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); + + /* Tell PF our expected packet-size */ + max_frame = ifp->if_mtu + IXGBE_MTU_HDR; + ixgbevf_rlpml_set_vf(hw, max_frame); for (int i = 0; i < adapter->num_queues; i++, rxr++) { u64 rdba = rxr->rxdma.dma_paddr; u32 reg, rxdctl; + /* Disable the queue */ + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); + rxdctl &= ~(IXGBE_RXDCTL_ENABLE | IXGBE_RXDCTL_VME); + IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl); + for (int j = 0; j < 10; j++) { + if (IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)) & + IXGBE_RXDCTL_ENABLE) + msec_delay(1); + else + break; + } + wmb(); /* Setup the Base and Length of the Rx Descriptor Ring */ IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i), (rdba & 0x00000000ffffffffULL)); @@ -1630,6 +1688,10 @@ ixv_initialize_receive_units(struct adapter *adapter) IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i), adapter->num_rx_desc * sizeof(union ixgbe_adv_rx_desc)); + /* Reset the ring indices */ + IXGBE_WRITE_REG(hw, IXGBE_VFRDH(rxr->me), 0); + IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), 0); + /* Set up the SRRCTL register */ reg = IXGBE_READ_REG(hw, IXGBE_VFSRRCTL(i)); reg &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; @@ -1658,6 +1720,35 @@ ixv_initialize_receive_units(struct adapter *adapter) msec_delay(1); } wmb(); + + /* Set the Tail Pointer */ +#ifdef DEV_NETMAP + /* + * In netmap mode, we must preserve the buffers made + * available to userspace before the if_init() + * (this is true by default on the TX side, because + * init makes all buffers available to userspace). + * + * netmap_reset() and the device specific routines + * (e.g. ixgbe_setup_receive_rings()) map these + * buffers at the end of the NIC ring, so here we + * must set the RDT (tail) register to make sure + * they are not overwritten. + * + * In this driver the NIC ring starts at RDH = 0, + * RDT points to the last slot available for reception (?), + * so RDT = num_rx_desc - 1 means the whole ring is available. + */ + if (ifp->if_capenable & IFCAP_NETMAP) { + struct netmap_adapter *na = NA(adapter->ifp); + struct netmap_kring *kring = &na->rx_rings[i]; + int t = na->num_rx_desc - 1 - nm_kr_rxspace(kring); + + IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), t); + } else +#endif /* DEV_NETMAP */ + IXGBE_WRITE_REG(hw, IXGBE_VFRDT(rxr->me), + adapter->num_rx_desc - 1); } rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |