[dpdk-dev] [PATCH v3 5/7] i40e: add additional ieee1588 support functions
Daniel Mrzyglod
danielx.t.mrzyglod at intel.com
Tue Nov 3 17:38:46 CET 2015
From: Pablo de Lara <pablo.de.lara.guarch at intel.com>
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 <pablo.de.lara.guarch at intel.com>
Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com>
---
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 5a9f11d..f1c36a8 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
@@ -268,6 +270,11 @@ 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[] = {
@@ -332,6 +339,9 @@ 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 */
@@ -6742,17 +6752,95 @@ 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;
@@ -6770,6 +6858,63 @@ 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);
@@ -6779,10 +6924,6 @@ 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;
@@ -6814,7 +6955,7 @@ 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);
@@ -6826,10 +6967,14 @@ 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)
@@ -6837,9 +6982,11 @@ 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;
}
@@ -6849,9 +6996,13 @@ 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)
@@ -6860,8 +7011,9 @@ 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 de3b9d9..500f1f5 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -35,6 +35,7 @@
#define _I40E_ETHDEV_H_
#include <rte_eth_ctrl.h>
+#include <rte_ptp.h>
#define I40E_VLAN_TAG_SIZE 4
@@ -502,6 +503,10 @@ 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);
--
2.1.0
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