diff options
Diffstat (limited to 'drivers/net/igb/igb_ptp.c')
-rw-r--r-- | drivers/net/igb/igb_ptp.c | 111 |
1 files changed, 79 insertions, 32 deletions
diff --git a/drivers/net/igb/igb_ptp.c b/drivers/net/igb/igb_ptp.c index 9fe0a03ca1ba..7c5f70d7608f 100644 --- a/drivers/net/igb/igb_ptp.c +++ b/drivers/net/igb/igb_ptp.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel(R) Gigabit Ethernet Linux driver - Copyright(c) 2007-2013 Intel Corporation. + Copyright(c) 2007-2014 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -12,14 +12,11 @@ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License along with - this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - The full GNU General Public License is included in this distribution in the file called "COPYING". Contact Information: + Linux NICS <linux.nics@intel.com> e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 @@ -32,6 +29,7 @@ #include "igb.h" +#ifdef HAVE_PTP_1588_CLOCK #include <linux/module.h> #include <linux/device.h> #include <linux/pci.h> @@ -247,7 +245,8 @@ static int igb_ptp_adjfreq_82576(struct ptp_clock_info *ptp, s32 ppb) else incvalue += rate; - E1000_WRITE_REG(hw, E1000_TIMINCA, INCPERIOD_82576 | (incvalue & INCVALUE_82576_MASK)); + E1000_WRITE_REG(hw, E1000_TIMINCA, INCPERIOD_82576 + | (incvalue & INCVALUE_82576_MASK)); return 0; } @@ -427,8 +426,9 @@ void igb_ptp_tx_work(struct work_struct *work) IGB_PTP_TX_TIMEOUT)) { dev_kfree_skb_any(adapter->ptp_tx_skb); adapter->ptp_tx_skb = NULL; + clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state); adapter->tx_hwtstamp_timeouts++; - dev_warn(&adapter->pdev->dev, "clearing Tx timestamp hang"); + dev_warn(&adapter->pdev->dev, "clearing Tx timestamp hang\n"); return; } @@ -466,10 +466,8 @@ static void igb_ptp_overflow_check(struct work_struct *work) void igb_ptp_rx_hang(struct igb_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; - struct igb_ring *rx_ring; u32 tsyncrxctl = E1000_READ_REG(hw, E1000_TSYNCRXCTL); unsigned long rx_event; - int n; if (hw->mac.type != e1000_82576) return; @@ -484,18 +482,15 @@ void igb_ptp_rx_hang(struct igb_adapter *adapter) /* Determine the most recent watchdog or rx_timestamp event */ rx_event = adapter->last_rx_ptp_check; - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - if (time_after(rx_ring->last_rx_timestamp, rx_event)) - rx_event = rx_ring->last_rx_timestamp; - } + if (time_after(adapter->last_rx_timestamp, rx_event)) + rx_event = adapter->last_rx_timestamp; /* Only need to read the high RXSTMP register to clear the lock */ if (time_is_before_jiffies(rx_event + 5 * HZ)) { E1000_READ_REG(hw, E1000_RXSTMPH); adapter->last_rx_ptp_check = jiffies; adapter->rx_hwtstamp_cleared++; - dev_warn(&adapter->pdev->dev, "clearing Rx timestamp hang"); + dev_warn(&adapter->pdev->dev, "clearing Rx timestamp hang\n"); } } @@ -520,6 +515,7 @@ void igb_ptp_tx_hwtstamp(struct igb_adapter *adapter) skb_tstamp_tx(adapter->ptp_tx_skb, &shhwtstamps); dev_kfree_skb_any(adapter->ptp_tx_skb); adapter->ptp_tx_skb = NULL; + clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state); } /** @@ -580,13 +576,35 @@ void igb_ptp_rx_rgtstamp(struct igb_q_vector *q_vector, regval |= (u64)E1000_READ_REG(hw, E1000_RXSTMPH) << 32; igb_ptp_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), regval); + + /* Update the last_rx_timestamp timer in order to enable watchdog check + * for error case of latched timestamp on a dropped packet. + */ + adapter->last_rx_timestamp = jiffies; } /** - * igb_ptp_hwtstamp_ioctl - control hardware time stamping + * igb_ptp_get_ts_config - get hardware time stamping config * @netdev: * @ifreq: - * @cmd: + * + * Get the hwtstamp_config settings to return to the user. Rather than attempt + * to deconstruct the settings from the registers, just return a shadow copy + * of the last known settings. + **/ +int igb_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + struct hwtstamp_config *config = &adapter->tstamp_config; + + return copy_to_user(ifr->ifr_data, config, sizeof(*config)) ? + -EFAULT : 0; +} + +/** + * igb_ptp_set_timestamp_mode - setup hardware for timestamping + * @adapter: networking device structure + * @config: hwtstamp configuration * * Outgoing time stamping can be enabled and disabled. Play nice and * disable it when requested, although it shouldn't case any overhead @@ -600,13 +618,11 @@ void igb_ptp_rx_rgtstamp(struct igb_q_vector *q_vector, * not supported, with the exception of "all V2 events regardless of * level 2 or 4". * - **/ -int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, - struct ifreq *ifr, int cmd) + */ +static int igb_ptp_set_timestamp_mode(struct igb_adapter *adapter, + struct hwtstamp_config *config) { - struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; - struct hwtstamp_config config; u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; u32 tsync_rx_cfg = 0; @@ -614,14 +630,11 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, bool is_l2 = false; u32 regval; - if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) - return -EFAULT; - /* reserved for future extensions */ - if (config.flags) + if (config->flags) return -EINVAL; - switch (config.tx_type) { + switch (config->tx_type) { case HWTSTAMP_TX_OFF: tsync_tx_ctl = 0; case HWTSTAMP_TX_ON: @@ -630,7 +643,7 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, return -ERANGE; } - switch (config.rx_filter) { + switch (config->rx_filter) { case HWTSTAMP_FILTER_NONE: tsync_rx_ctl = 0; break; @@ -654,7 +667,7 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; - config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; is_l2 = true; is_l4 = true; break; @@ -666,12 +679,12 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, */ if (hw->mac.type != e1000_82576) { tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; - config.rx_filter = HWTSTAMP_FILTER_ALL; + config->rx_filter = HWTSTAMP_FILTER_ALL; break; } /* fall through */ default: - config.rx_filter = HWTSTAMP_FILTER_NONE; + config->rx_filter = HWTSTAMP_FILTER_NONE; return -ERANGE; } @@ -689,7 +702,7 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, if ((hw->mac.type >= e1000_82580) && tsync_rx_ctl) { tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; - config.rx_filter = HWTSTAMP_FILTER_ALL; + config->rx_filter = HWTSTAMP_FILTER_ALL; is_l2 = true; is_l4 = true; @@ -753,6 +766,32 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev, regval = E1000_READ_REG(hw, E1000_RXSTMPL); regval = E1000_READ_REG(hw, E1000_RXSTMPH); + return 0; +} + +/** + * igb_ptp_set_ts_config - set hardware time stamping config + * @netdev: + * @ifreq: + * + **/ +int igb_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + struct hwtstamp_config config; + int err; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + err = igb_ptp_set_timestamp_mode(adapter, &config); + if (err) + return err; + + /* save these settings for future reference */ + memcpy(&adapter->tstamp_config, &config, + sizeof(adapter->tstamp_config)); + return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? -EFAULT : 0; } @@ -849,6 +888,9 @@ void igb_ptp_init(struct igb_adapter *adapter) E1000_WRITE_REG(hw, E1000_IMS, E1000_IMS_TS); } + adapter->tstamp_config.rx_filter = HWTSTAMP_FILTER_NONE; + adapter->tstamp_config.tx_type = HWTSTAMP_TX_OFF; + adapter->ptp_clock = ptp_clock_register(&adapter->ptp_caps, &adapter->pdev->dev); if (IS_ERR(adapter->ptp_clock)) { @@ -888,6 +930,7 @@ void igb_ptp_stop(struct igb_adapter *adapter) if (adapter->ptp_tx_skb) { dev_kfree_skb_any(adapter->ptp_tx_skb); adapter->ptp_tx_skb = NULL; + clear_bit_unlock(__IGB_PTP_TX_IN_PROGRESS, &adapter->state); } if (adapter->ptp_clock) { @@ -911,6 +954,9 @@ void igb_ptp_reset(struct igb_adapter *adapter) if (!(adapter->flags & IGB_FLAG_PTP)) return; + /* reset the tstamp_config */ + igb_ptp_set_timestamp_mode(adapter, &adapter->tstamp_config); + switch (adapter->hw.mac.type) { case e1000_82576: /* Dial the nominal frequency. */ @@ -942,3 +988,4 @@ void igb_ptp_reset(struct igb_adapter *adapter) ktime_to_ns(ktime_get_real())); } } +#endif /* HAVE_PTP_1588_CLOCK */ |