From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Mrzyglod Subject: [PATCH v4 5/7] i40e: add additional ieee1588 support functions Date: Wed, 4 Nov 2015 11:06:19 +0100 Message-ID: <1446631581-4040-6-git-send-email-danielx.t.mrzyglod@intel.com> References: <1443799208-9408-1-git-send-email-danielx.t.mrzyglod@intel.com> <1446631581-4040-1-git-send-email-danielx.t.mrzyglod@intel.com> To: dev@dpdk.org Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id C183F91CE for ; Wed, 4 Nov 2015 11:06:46 +0100 (CET) In-Reply-To: <1446631581-4040-1-git-send-email-danielx.t.mrzyglod@intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Pablo de Lara Add additional functions to support the existing IEEE1588 functionality and to enable getting, setting and adjusting the device time. Signed-off-by: Pablo de Lara Signed-off-by: Daniel Mrzyglod --- drivers/net/i40e/i40e_ethdev.c | 192 ++++++++++++++++++++++++++++++++++++----- drivers/net/i40e/i40e_ethdev.h | 5 ++ 2 files changed, 177 insertions(+), 20 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 34acc8c..0c9f630 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -129,11 +129,13 @@ (1UL << RTE_ETH_FLOW_NONFRAG_IPV6_OTHER) | \ (1UL << RTE_ETH_FLOW_L2_PAYLOAD)) -#define I40E_PTP_40GB_INCVAL 0x0199999999ULL -#define I40E_PTP_10GB_INCVAL 0x0333333333ULL -#define I40E_PTP_1GB_INCVAL 0x2000000000ULL -#define I40E_PRTTSYN_TSYNENA 0x80000000 -#define I40E_PRTTSYN_TSYNTYPE 0x0e000000 +/* Additional timesync values. */ +#define I40E_PTP_40GB_INCVAL 0x0199999999ULL +#define I40E_PTP_10GB_INCVAL 0x0333333333ULL +#define I40E_PTP_1GB_INCVAL 0x2000000000ULL +#define I40E_PRTTSYN_TSYNENA 0x80000000 +#define I40E_PRTTSYN_TSYNTYPE 0x0e000000 +#define I40E_CYCLECOUNTER_MASK 0xffffffffffffffff #define I40E_MAX_PERCENT 100 #define I40E_DEFAULT_DCB_APP_NUM 1 @@ -404,6 +406,11 @@ static int i40e_timesync_read_rx_timestamp(struct rte_eth_dev *dev, static int i40e_timesync_read_tx_timestamp(struct rte_eth_dev *dev, struct timespec *timestamp); static void i40e_read_stats_registers(struct i40e_pf *pf, struct i40e_hw *hw); +static int i40e_timesync_time_adjust(struct rte_eth_dev *dev, int64_t delta); +static int i40e_timesync_time_get(struct rte_eth_dev *dev, + struct timespec *timestamp); +static int i40e_timesync_time_set(struct rte_eth_dev *dev, + struct timespec *timestamp); static const struct rte_pci_id pci_id_i40e_map[] = { @@ -468,6 +475,9 @@ static const struct eth_dev_ops i40e_eth_dev_ops = { .timesync_read_rx_timestamp = i40e_timesync_read_rx_timestamp, .timesync_read_tx_timestamp = i40e_timesync_read_tx_timestamp, .get_dcb_info = i40e_dev_get_dcb_info, + .timesync_time_adjust = i40e_timesync_time_adjust, + .timesync_time_get = i40e_timesync_time_get, + .timesync_time_set = i40e_timesync_time_set, }; /* store statistics names and its offset in stats structure */ @@ -7544,17 +7554,95 @@ i40e_mirror_rule_reset(struct rte_eth_dev *dev, uint8_t sw_id) return 0; } -static int -i40e_timesync_enable(struct rte_eth_dev *dev) +/* + * Adds the new cycles (in nanoseconds) to the previous time stored. + */ +static uint64_t +timecounter_cycles_to_ns_time(struct timecounter *tc, uint64_t cycle_tstamp) +{ + uint64_t delta = (cycle_tstamp - tc->cycle_last); + uint64_t nsec = tc->nsec; + + nsec += delta; + + return nsec; +} + +static uint64_t +i40e_read_timesync_cyclecounter(struct rte_eth_dev *dev) { struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); - struct rte_eth_link *link = &dev->data->dev_link; - uint32_t tsync_ctl_l; - uint32_t tsync_ctl_h; + uint64_t systim_cycles = 0; + + systim_cycles |= (uint64_t)I40E_READ_REG(hw, I40E_PRTTSYN_TIME_L); + systim_cycles |= (uint64_t)I40E_READ_REG(hw, I40E_PRTTSYN_TIME_H) + << 32; + + return systim_cycles; +} + +static uint64_t +timecounter_read_ns_delta(struct rte_eth_dev *dev) +{ + uint64_t cycle_now, cycle_delta; + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + + /* Read cycle counter. */ + cycle_now = adapter->tc.cc->read(dev); + + /* Calculate the delta since the last timecounter_read_delta(). */ + cycle_delta = (cycle_now - adapter->tc.cycle_last); + + /* Update time stamp of timecounter_read_delta() call. */ + adapter->tc.cycle_last = cycle_now; + + /* Delta already in nanoseconds. */ + return cycle_delta; +} + +static uint64_t +timecounter_read(struct rte_eth_dev *dev) +{ + uint64_t nsec; + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + + /* Increment time by nanoseconds since last call. */ + nsec = timecounter_read_ns_delta(dev); + nsec += adapter->tc.nsec; + adapter->tc.nsec = nsec; + + return nsec; +} + +static void +timecounter_init(struct rte_eth_dev *dev, + uint64_t start_time) +{ + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + adapter->tc.cc = &adapter->cc; + adapter->tc.cycle_last = adapter->tc.cc->read(dev); + adapter->tc.nsec = start_time; +} + +static void +i40e_start_cyclecounter(struct rte_eth_dev *dev) +{ + struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + struct rte_eth_link link; uint32_t tsync_inc_l; uint32_t tsync_inc_h; - switch (link->link_speed) { + /* Get current link speed. */ + memset(&link, 0, sizeof(link)); + i40e_dev_link_update(dev, 1); + rte_i40e_dev_atomic_read_link_status(dev, &link); + + switch (link.link_speed) { case ETH_LINK_SPEED_40G: tsync_inc_l = I40E_PTP_40GB_INCVAL & 0xFFFFFFFF; tsync_inc_h = I40E_PTP_40GB_INCVAL >> 32; @@ -7572,6 +7660,63 @@ i40e_timesync_enable(struct rte_eth_dev *dev) tsync_inc_h = 0x0; } + /* Set the timesync increment value. */ + I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_L, tsync_inc_l); + I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_H, tsync_inc_h); + + memset(&adapter->cc, 0, sizeof(struct cyclecounter)); + adapter->cc.read = i40e_read_timesync_cyclecounter; +} + +static int +i40e_timesync_time_adjust(struct rte_eth_dev *dev, int64_t delta) +{ + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + + adapter->tc.nsec += delta; + + return 0; +} + +static int +i40e_timesync_time_set(struct rte_eth_dev *dev, struct timespec *ts) +{ + uint64_t ns; + + ns = timespec_to_ns(ts); + + /* Reset the timecounter. */ + timecounter_init(dev, ns); + + return 0; +} + +static int +i40e_timesync_time_get(struct rte_eth_dev *dev, struct timespec *ts) +{ + uint64_t ns; + + ns = timecounter_read(dev); + *ts = ns_to_timespec(ns); + + return 0; +} + +static int +i40e_timesync_enable(struct rte_eth_dev *dev) +{ + struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + uint32_t tsync_ctl_l; + uint32_t tsync_ctl_h; + uint64_t ns; + struct timespec zerotime = {0, 0}; + + /* Set 0.0 epoch time to initialize timecounter. */ + ns = timespec_to_ns(&zerotime); + i40e_start_cyclecounter(dev); + timecounter_init(dev, ns); + /* Clear timesync registers. */ I40E_READ_REG(hw, I40E_PRTTSYN_STAT_0); I40E_READ_REG(hw, I40E_PRTTSYN_TXTIME_H); @@ -7581,10 +7726,6 @@ i40e_timesync_enable(struct rte_eth_dev *dev) I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_L(3)); I40E_READ_REG(hw, I40E_PRTTSYN_TXTIME_H); - /* Set the timesync increment value. */ - I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_L, tsync_inc_l); - I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_H, tsync_inc_h); - /* Enable timestamping of PTP packets. */ tsync_ctl_l = I40E_READ_REG(hw, I40E_PRTTSYN_CTL0); tsync_ctl_l |= I40E_PRTTSYN_TSYNENA; @@ -7616,7 +7757,7 @@ i40e_timesync_disable(struct rte_eth_dev *dev) I40E_WRITE_REG(hw, I40E_PRTTSYN_CTL0, tsync_ctl_l); I40E_WRITE_REG(hw, I40E_PRTTSYN_CTL1, tsync_ctl_h); - /* Set the timesync increment value. */ + /* Reset the timesync increment value. */ I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_L, 0x0); I40E_WRITE_REG(hw, I40E_PRTTSYN_INC_H, 0x0); @@ -7628,10 +7769,14 @@ i40e_timesync_read_rx_timestamp(struct rte_eth_dev *dev, struct timespec *timestamp, uint32_t flags) { struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + uint32_t sync_status; uint32_t rx_stmpl; uint32_t rx_stmph; uint32_t index = flags & 0x03; + uint64_t regival = 0; sync_status = I40E_READ_REG(hw, I40E_PRTTSYN_STAT_1); if ((sync_status & (1 << index)) == 0) @@ -7639,9 +7784,11 @@ i40e_timesync_read_rx_timestamp(struct rte_eth_dev *dev, rx_stmpl = I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_L(index)); rx_stmph = I40E_READ_REG(hw, I40E_PRTTSYN_RXTIME_H(index)); + timecounter_read(dev); - timestamp->tv_sec = (uint64_t)(((uint64_t)rx_stmph << 32) | rx_stmpl); - timestamp->tv_nsec = 0; + regival = (uint64_t)(((uint64_t)rx_stmph << 32) | rx_stmpl); + regival = timecounter_cycles_to_ns_time(&adapter->tc, regival); + *timestamp = ns_to_timespec(regival); return 0; } @@ -7651,9 +7798,13 @@ i40e_timesync_read_tx_timestamp(struct rte_eth_dev *dev, struct timespec *timestamp) { struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct i40e_adapter *adapter = + (struct i40e_adapter *)dev->data->dev_private; + uint32_t sync_status; uint32_t tx_stmpl; uint32_t tx_stmph; + uint64_t regival = 0; sync_status = I40E_READ_REG(hw, I40E_PRTTSYN_STAT_0); if ((sync_status & I40E_PRTTSYN_STAT_0_TXTIME_MASK) == 0) @@ -7662,8 +7813,9 @@ i40e_timesync_read_tx_timestamp(struct rte_eth_dev *dev, tx_stmpl = I40E_READ_REG(hw, I40E_PRTTSYN_TXTIME_L); tx_stmph = I40E_READ_REG(hw, I40E_PRTTSYN_TXTIME_H); - timestamp->tv_sec = (uint64_t)(((uint64_t)tx_stmph << 32) | tx_stmpl); - timestamp->tv_nsec = 0; + regival = (uint64_t)(((uint64_t)tx_stmph << 32) | tx_stmpl); + regival = timecounter_cycles_to_ns_time(&adapter->tc, regival); + *timestamp = ns_to_timespec(regival); return 0; } diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h index c64f83b..e3ebc8a 100644 --- a/drivers/net/i40e/i40e_ethdev.h +++ b/drivers/net/i40e/i40e_ethdev.h @@ -35,6 +35,7 @@ #define _I40E_ETHDEV_H_ #include +#include #define I40E_VLAN_TAG_SIZE 4 @@ -511,6 +512,10 @@ struct i40e_adapter { bool rx_vec_allowed; bool tx_simple_allowed; bool tx_vec_allowed; + + /* for PTP */ + struct cyclecounter cc; + struct timecounter tc; }; int i40e_dev_switch_queues(struct i40e_pf *pf, bool on); -- 2.5.0