summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/net/ethernet/marvell/mvpp2/mvpp2.h31
-rw-r--r--drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c108
-rw-r--r--drivers/net/ethernet/marvell/mvpp2/mvpp2_tai.c57
3 files changed, 194 insertions, 2 deletions
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
index b9fae3870393..75467411900e 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2.h
@@ -600,6 +600,9 @@
#define MVPP22_PTP_INT_CAUSE 0x00
#define MVPP22_PTP_INT_MASK 0x04
#define MVPP22_PTP_GCR 0x08
+#define MVPP22_PTP_GCR_RX_RESET BIT(13)
+#define MVPP22_PTP_GCR_TX_RESET BIT(1)
+#define MVPP22_PTP_GCR_TSU_ENABLE BIT(0)
#define MVPP22_PTP_TX_Q0_R0 0x0c
#define MVPP22_PTP_TX_Q0_R1 0x10
#define MVPP22_PTP_TX_Q0_R2 0x14
@@ -1094,6 +1097,9 @@ struct mvpp2_port {
* them from 0
*/
int rss_ctx[MVPP22_N_RSS_TABLES];
+
+ bool hwtstamp;
+ bool rx_hwtstamp;
};
/* The mvpp2_tx_desc and mvpp2_rx_desc structures describe the
@@ -1173,7 +1179,7 @@ struct mvpp22_rx_desc {
__le16 reserved1;
__le16 data_size;
__le32 reserved2;
- __le32 reserved3;
+ __le32 timestamp;
__le64 buf_dma_addr_key_hash;
__le64 buf_cookie_misc;
};
@@ -1355,11 +1361,34 @@ void mvpp2_dbgfs_cleanup(struct mvpp2 *priv);
#ifdef CONFIG_MVPP2_PTP
int mvpp22_tai_probe(struct device *dev, struct mvpp2 *priv);
+void mvpp22_tai_tstamp(struct mvpp2_tai *tai, u32 tstamp,
+ struct skb_shared_hwtstamps *hwtstamp);
+void mvpp22_tai_start(struct mvpp2_tai *tai);
+void mvpp22_tai_stop(struct mvpp2_tai *tai);
+int mvpp22_tai_ptp_clock_index(struct mvpp2_tai *tai);
#else
static inline int mvpp22_tai_probe(struct device *dev, struct mvpp2 *priv)
{
return 0;
}
+static inline void mvpp22_tai_tstamp(struct mvpp2_tai *tai, u32 tstamp,
+ struct skb_shared_hwtstamps *hwtstamp)
+{
+}
+static inline void mvpp22_tai_start(struct mvpp2_tai *tai)
+{
+}
+static inline void mvpp22_tai_stop(struct mvpp2_tai *tai)
+{
+}
+static inline int mvpp22_tai_ptp_clock_index(struct mvpp2_tai *tai)
+{
+ return -1;
+}
#endif
+static inline bool mvpp22_rx_hwtstamping(struct mvpp2_port *port)
+{
+ return IS_ENABLED(CONFIG_MVPP2_PTP) && port->rx_hwtstamp;
+}
#endif
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 9ad286930c1d..0d5c024f286b 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -3449,7 +3449,7 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
unsigned int frag_size;
dma_addr_t dma_addr;
phys_addr_t phys_addr;
- u32 rx_status;
+ u32 rx_status, timestamp;
int pool, rx_bytes, err, ret;
void *data;
@@ -3527,6 +3527,15 @@ static int mvpp2_rx(struct mvpp2_port *port, struct napi_struct *napi,
goto err_drop_frame;
}
+ /* If we have RX hardware timestamping enabled, grab the
+ * timestamp from the queue and convert.
+ */
+ if (mvpp22_rx_hwtstamping(port)) {
+ timestamp = le32_to_cpu(rx_desc->pp22.timestamp);
+ mvpp22_tai_tstamp(port->priv->tai, timestamp,
+ skb_hwtstamps(skb));
+ }
+
err = mvpp2_rx_refill(port, bm_pool, pp, pool);
if (err) {
netdev_err(port->dev, "failed to refill BM pools\n");
@@ -4561,10 +4570,100 @@ mvpp2_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
stats->tx_dropped = dev->stats.tx_dropped;
}
+static int mvpp2_set_ts_config(struct mvpp2_port *port, struct ifreq *ifr)
+{
+ struct hwtstamp_config config;
+ void __iomem *ptp;
+
+ if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+ return -EFAULT;
+
+ if (config.flags)
+ return -EINVAL;
+
+ if (config.tx_type != HWTSTAMP_TX_OFF)
+ return -ERANGE;
+
+ ptp = port->priv->iface_base + MVPP22_PTP_BASE(port->gop_id);
+ if (config.rx_filter != HWTSTAMP_FILTER_NONE) {
+ config.rx_filter = HWTSTAMP_FILTER_ALL;
+ mvpp22_tai_start(port->priv->tai);
+ mvpp2_modify(ptp + MVPP22_PTP_GCR,
+ MVPP22_PTP_GCR_RX_RESET |
+ MVPP22_PTP_GCR_TX_RESET |
+ MVPP22_PTP_GCR_TSU_ENABLE,
+ MVPP22_PTP_GCR_RX_RESET |
+ MVPP22_PTP_GCR_TX_RESET |
+ MVPP22_PTP_GCR_TSU_ENABLE);
+ port->rx_hwtstamp = true;
+ } else {
+ port->rx_hwtstamp = false;
+ mvpp2_modify(ptp + MVPP22_PTP_GCR,
+ MVPP22_PTP_GCR_RX_RESET |
+ MVPP22_PTP_GCR_TX_RESET |
+ MVPP22_PTP_GCR_TSU_ENABLE, 0);
+ mvpp22_tai_stop(port->priv->tai);
+ }
+
+ if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int mvpp2_get_ts_config(struct mvpp2_port *port, struct ifreq *ifr)
+{
+ struct hwtstamp_config config;
+
+ memset(&config, 0, sizeof(config));
+
+ config.tx_type = HWTSTAMP_TX_OFF;
+ config.rx_filter = port->rx_hwtstamp ?
+ HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE;
+
+ if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int mvpp2_ethtool_get_ts_info(struct net_device *dev,
+ struct ethtool_ts_info *info)
+{
+ struct mvpp2_port *port = netdev_priv(dev);
+
+ if (!port->hwtstamp)
+ return -EOPNOTSUPP;
+
+ info->phc_index = mvpp22_tai_ptp_clock_index(port->priv->tai);
+ info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE |
+ SOF_TIMESTAMPING_RX_HARDWARE |
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+ info->tx_types = BIT(HWTSTAMP_TX_OFF);
+ info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
+ BIT(HWTSTAMP_FILTER_ALL);
+
+ return 0;
+}
+
static int mvpp2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mvpp2_port *port = netdev_priv(dev);
+ switch (cmd) {
+ case SIOCSHWTSTAMP:
+ if (port->hwtstamp)
+ return mvpp2_set_ts_config(port, ifr);
+ break;
+
+ case SIOCGHWTSTAMP:
+ if (port->hwtstamp)
+ return mvpp2_get_ts_config(port, ifr);
+ break;
+ }
+
if (!port->phylink)
return -ENOTSUPP;
@@ -5034,6 +5133,7 @@ static const struct ethtool_ops mvpp2_eth_tool_ops = {
ETHTOOL_COALESCE_MAX_FRAMES,
.nway_reset = mvpp2_ethtool_nway_reset,
.get_link = ethtool_op_get_link,
+ .get_ts_info = mvpp2_ethtool_get_ts_info,
.set_coalesce = mvpp2_ethtool_set_coalesce,
.get_coalesce = mvpp2_ethtool_get_coalesce,
.get_drvinfo = mvpp2_ethtool_get_drvinfo,
@@ -6112,6 +6212,12 @@ static int mvpp2_port_probe(struct platform_device *pdev,
port->stats_base = port->priv->iface_base +
MVPP22_MIB_COUNTERS_OFFSET +
port->gop_id * MVPP22_MIB_COUNTERS_PORT_SZ;
+
+ /* We may want a property to describe whether we should use
+ * MAC hardware timestamping.
+ */
+ if (priv->tai)
+ port->hwtstamp = true;
}
/* Alloc per-cpu and ethtool stats */
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_tai.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_tai.c
index 86c94ca97e43..95862aff49f1 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_tai.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_tai.c
@@ -59,6 +59,8 @@ struct mvpp2_tai {
void __iomem *base;
spinlock_t lock;
u64 period; // nanosecond period in 32.32 fixed point
+ /* This timestamp is updated every two seconds */
+ struct timespec64 stamp;
};
static void mvpp2_tai_modify(void __iomem *reg, u32 mask, u32 set)
@@ -297,6 +299,15 @@ static int mvpp22_tai_settime64(struct ptp_clock_info *ptp,
return 0;
}
+static long mvpp22_tai_aux_work(struct ptp_clock_info *ptp)
+{
+ struct mvpp2_tai *tai = ptp_to_tai(ptp);
+
+ mvpp22_tai_gettimex64(ptp, &tai->stamp, NULL);
+
+ return msecs_to_jiffies(2000);
+}
+
static void mvpp22_tai_set_step(struct mvpp2_tai *tai)
{
void __iomem *base = tai->base;
@@ -326,6 +337,51 @@ static void mvpp22_tai_init(struct mvpp2_tai *tai)
mvpp2_tai_modify(base + MVPP22_TAI_CR0, CR0_SW_NRESET, CR0_SW_NRESET);
}
+int mvpp22_tai_ptp_clock_index(struct mvpp2_tai *tai)
+{
+ return ptp_clock_index(tai->ptp_clock);
+}
+
+void mvpp22_tai_tstamp(struct mvpp2_tai *tai, u32 tstamp,
+ struct skb_shared_hwtstamps *hwtstamp)
+{
+ struct timespec64 ts;
+ int delta;
+
+ /* The tstamp consists of 2 bits of seconds and 30 bits of nanoseconds.
+ * We use our stored timestamp (tai->stamp) to form a full timestamp,
+ * and we must read the seconds exactly once.
+ */
+ ts.tv_sec = READ_ONCE(tai->stamp.tv_sec);
+ ts.tv_nsec = tstamp & 0x3fffffff;
+
+ /* Calculate the delta in seconds between our stored timestamp and
+ * the value read from the queue. Allow timestamps one second in the
+ * past, otherwise consider them to be in the future.
+ */
+ delta = ((tstamp >> 30) - (ts.tv_sec & 3)) & 3;
+ if (delta == 3)
+ delta -= 4;
+ ts.tv_sec += delta;
+
+ memset(hwtstamp, 0, sizeof(*hwtstamp));
+ hwtstamp->hwtstamp = timespec64_to_ktime(ts);
+}
+
+void mvpp22_tai_start(struct mvpp2_tai *tai)
+{
+ long delay;
+
+ delay = mvpp22_tai_aux_work(&tai->caps);
+
+ ptp_schedule_worker(tai->ptp_clock, delay);
+}
+
+void mvpp22_tai_stop(struct mvpp2_tai *tai)
+{
+ ptp_cancel_worker_sync(tai->ptp_clock);
+}
+
static void mvpp22_tai_remove(void *priv)
{
struct mvpp2_tai *tai = priv;
@@ -385,6 +441,7 @@ int mvpp22_tai_probe(struct device *dev, struct mvpp2 *priv)
tai->caps.adjtime = mvpp22_tai_adjtime;
tai->caps.gettimex64 = mvpp22_tai_gettimex64;
tai->caps.settime64 = mvpp22_tai_settime64;
+ tai->caps.do_aux_work = mvpp22_tai_aux_work;
ret = devm_add_action(dev, mvpp22_tai_remove, tai);
if (ret)
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-06 13:11:04 +0300