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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-11-09 17:51:42 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-11-09 17:51:42 (GMT) |
commit | 1ce55238e2dd46b978b098a85cb3d3ea494e4a93 (patch) | |
tree | 523254dbb402b1850d693f0c1f1a1db6e865456d /drivers/net/ixgbe/ixgbe_main.c | |
parent | aa907639f1d9fe0e3274b4f6c1088542f750a539 (diff) | |
parent | 2606289779cb297320a185db5997729d29b6700b (diff) | |
download | linux-fsl-qoriq-1ce55238e2dd46b978b098a85cb3d3ea494e4a93.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
net/fsl_pq_mdio: add module license GPL
can: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo()
can: should not use __dev_get_by_index() without locks
hisax: remove bad udelay call to fix build error on ARM
ipip: Fix handling of DF packets when pmtudisc is OFF
qlge: Set PCIe reset type for EEH to fundamental.
qlge: Fix early exit from mbox cmd complete wait.
ixgbe: fix traffic hangs on Tx with ioatdma loaded
ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled
ixgbe: Fix gso_max_size for 82599 when DCB is enabled
macsonic: fix crash on PowerBook 520
NET: cassini, fix lock imbalance
ems_usb: Fix byte order issues on big endian machines
be2net: Bug fix to send config commands to hardware after netdev_register
be2net: fix to set proper flow control on resume
netfilter: xt_connlimit: fix regression caused by zero family value
rt2x00: Don't queue ieee80211 work after USB removal
Revert "ipw2200: fix oops on missing firmware"
decnet: netdevice refcount leak
netfilter: nf_nat: fix NAT issue in 2.6.30.4+
...
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
-rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 84 |
1 files changed, 78 insertions, 6 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index cbb143c..5bd9e6b 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -44,6 +44,7 @@ #include "ixgbe.h" #include "ixgbe_common.h" +#include "ixgbe_dcb_82599.h" char ixgbe_driver_name[] = "ixgbe"; static const char ixgbe_driver_string[] = @@ -226,6 +227,56 @@ static void ixgbe_unmap_and_free_tx_resource(struct ixgbe_adapter *adapter, /* tx_buffer_info must be completely set up in the transmit path */ } +/** + * ixgbe_tx_is_paused - check if the tx ring is paused + * @adapter: the ixgbe adapter + * @tx_ring: the corresponding tx_ring + * + * If not in DCB mode, checks TFCS.TXOFF, otherwise, find out the + * corresponding TC of this tx_ring when checking TFCS. + * + * Returns : true if paused + */ +static inline bool ixgbe_tx_is_paused(struct ixgbe_adapter *adapter, + struct ixgbe_ring *tx_ring) +{ + int tc; + u32 txoff = IXGBE_TFCS_TXOFF; + +#ifdef CONFIG_IXGBE_DCB + if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { + int reg_idx = tx_ring->reg_idx; + int dcb_i = adapter->ring_feature[RING_F_DCB].indices; + + if (adapter->hw.mac.type == ixgbe_mac_82598EB) { + tc = reg_idx >> 2; + txoff = IXGBE_TFCS_TXOFF0; + } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { + tc = 0; + txoff = IXGBE_TFCS_TXOFF; + if (dcb_i == 8) { + /* TC0, TC1 */ + tc = reg_idx >> 5; + if (tc == 2) /* TC2, TC3 */ + tc += (reg_idx - 64) >> 4; + else if (tc == 3) /* TC4, TC5, TC6, TC7 */ + tc += 1 + ((reg_idx - 96) >> 3); + } else if (dcb_i == 4) { + /* TC0, TC1 */ + tc = reg_idx >> 6; + if (tc == 1) { + tc += (reg_idx - 64) >> 5; + if (tc == 2) /* TC2, TC3 */ + tc += (reg_idx - 96) >> 4; + } + } + } + txoff <<= tc; + } +#endif + return IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & txoff; +} + static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, struct ixgbe_ring *tx_ring, unsigned int eop) @@ -237,7 +288,7 @@ static inline bool ixgbe_check_tx_hang(struct ixgbe_adapter *adapter, adapter->detect_tx_hung = false; if (tx_ring->tx_buffer_info[eop].time_stamp && time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ) && - !(IXGBE_READ_REG(&adapter->hw, IXGBE_TFCS) & IXGBE_TFCS_TXOFF)) { + !ixgbe_tx_is_paused(adapter, tx_ring)) { /* detected Tx unit hang */ union ixgbe_adv_tx_desc *tx_desc; tx_desc = IXGBE_TX_DESC_ADV(*tx_ring, eop); @@ -412,19 +463,23 @@ static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, u32 txctrl; int cpu = get_cpu(); int q = tx_ring - adapter->tx_ring; + struct ixgbe_hw *hw = &adapter->hw; if (tx_ring->cpu != cpu) { - txctrl = IXGBE_READ_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q)); if (adapter->hw.mac.type == ixgbe_mac_82598EB) { + txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL(q)); txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK; txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); + txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; + IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(q), txctrl); } else if (adapter->hw.mac.type == ixgbe_mac_82599EB) { + txctrl = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(q)); txctrl &= ~IXGBE_DCA_TXCTRL_CPUID_MASK_82599; txctrl |= (dca3_get_tag(&adapter->pdev->dev, cpu) << - IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599); + IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599); + txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; + IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(q), txctrl); } - txctrl |= IXGBE_DCA_TXCTRL_DESC_DCA_EN; - IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_TXCTRL(q), txctrl); tx_ring->cpu = cpu; } put_cpu(); @@ -1913,11 +1968,25 @@ static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) break; } } + if (hw->mac.type == ixgbe_mac_82599EB) { + u32 rttdcs; + + /* disable the arbiter while setting MTQC */ + rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + rttdcs |= IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); + /* We enable 8 traffic classes, DCB only */ if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) IXGBE_WRITE_REG(hw, IXGBE_MTQC, (IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ)); + else + IXGBE_WRITE_REG(hw, IXGBE_MTQC, IXGBE_MTQC_64Q_1PB); + + /* re-eable the arbiter */ + rttdcs &= ~IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); } } @@ -2471,7 +2540,10 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter) ixgbe_restore_vlan(adapter); #ifdef CONFIG_IXGBE_DCB if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { - netif_set_gso_max_size(netdev, 32768); + if (hw->mac.type == ixgbe_mac_82598EB) + netif_set_gso_max_size(netdev, 32768); + else + netif_set_gso_max_size(netdev, 65536); ixgbe_configure_dcb(adapter); } else { netif_set_gso_max_size(netdev, 65536); |