ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/target/linux/layerscape/patches-5.4/701-net-0266-net-mscc-ocelot-convert-to-use-ocelot_get_txtstamp.patch b/target/linux/layerscape/patches-5.4/701-net-0266-net-mscc-ocelot-convert-to-use-ocelot_get_txtstamp.patch
new file mode 100644
index 0000000..31469bd
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0266-net-mscc-ocelot-convert-to-use-ocelot_get_txtstamp.patch
@@ -0,0 +1,202 @@
+From dd8b8f6baf4917124ed268022f7ce4a08d35cc89 Mon Sep 17 00:00:00 2001
+From: Yangbo Lu <yangbo.lu@nxp.com>
+Date: Wed, 20 Nov 2019 16:23:15 +0800
+Subject: [PATCH] net: mscc: ocelot: convert to use ocelot_get_txtstamp()
+
+The method getting TX timestamp by reading timestamp FIFO and
+matching skbs list is common for DSA Felix driver too.
+So move code out of ocelot_board.c, convert to use
+ocelot_get_txtstamp() function and export it.
+
+Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/mscc/ocelot.c | 62 ++++++++++++++++++++++++++++++--
+ drivers/net/ethernet/mscc/ocelot.h | 6 ----
+ drivers/net/ethernet/mscc/ocelot_board.c | 53 +--------------------------
+ include/soc/mscc/ocelot.h | 9 ++++-
+ 4 files changed, 69 insertions(+), 61 deletions(-)
+
+--- a/drivers/net/ethernet/mscc/ocelot.c
++++ b/drivers/net/ethernet/mscc/ocelot.c
+@@ -661,7 +661,8 @@ out:
+ return NETDEV_TX_OK;
+ }
+
+-void ocelot_get_hwtimestamp(struct ocelot *ocelot, struct timespec64 *ts)
++static void ocelot_get_hwtimestamp(struct ocelot *ocelot,
++ struct timespec64 *ts)
+ {
+ unsigned long flags;
+ u32 val;
+@@ -686,7 +687,64 @@ void ocelot_get_hwtimestamp(struct ocelo
+
+ spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
+ }
+-EXPORT_SYMBOL(ocelot_get_hwtimestamp);
++
++void ocelot_get_txtstamp(struct ocelot *ocelot)
++{
++ int budget = OCELOT_PTP_QUEUE_SZ;
++
++ while (budget--) {
++ struct skb_shared_hwtstamps shhwtstamps;
++ struct list_head *pos, *tmp;
++ struct sk_buff *skb = NULL;
++ struct ocelot_skb *entry;
++ struct ocelot_port *port;
++ struct timespec64 ts;
++ u32 val, id, txport;
++
++ val = ocelot_read(ocelot, SYS_PTP_STATUS);
++
++ /* Check if a timestamp can be retrieved */
++ if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD))
++ break;
++
++ WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL);
++
++ /* Retrieve the ts ID and Tx port */
++ id = SYS_PTP_STATUS_PTP_MESS_ID_X(val);
++ txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val);
++
++ /* Retrieve its associated skb */
++ port = ocelot->ports[txport];
++
++ list_for_each_safe(pos, tmp, &port->skbs) {
++ entry = list_entry(pos, struct ocelot_skb, head);
++ if (entry->id != id)
++ continue;
++
++ skb = entry->skb;
++
++ list_del(pos);
++ kfree(entry);
++ }
++
++ /* Next ts */
++ ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT);
++
++ if (unlikely(!skb))
++ continue;
++
++ /* Get the h/w timestamp */
++ ocelot_get_hwtimestamp(ocelot, &ts);
++
++ /* Set the timestamp into the skb */
++ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
++ shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
++ skb_tstamp_tx(skb, &shhwtstamps);
++
++ dev_kfree_skb_any(skb);
++ }
++}
++EXPORT_SYMBOL(ocelot_get_txtstamp);
+
+ static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
+ {
+--- a/drivers/net/ethernet/mscc/ocelot.h
++++ b/drivers/net/ethernet/mscc/ocelot.h
+@@ -74,12 +74,6 @@ struct ocelot_port_private {
+ struct ocelot_port_tc tc;
+ };
+
+-struct ocelot_skb {
+- struct list_head head;
+- struct sk_buff *skb;
+- u8 id;
+-};
+-
+ u32 ocelot_port_readl(struct ocelot_port *port, u32 reg);
+ void ocelot_port_writel(struct ocelot_port *port, u32 val, u32 reg);
+
+--- a/drivers/net/ethernet/mscc/ocelot_board.c
++++ b/drivers/net/ethernet/mscc/ocelot_board.c
+@@ -198,60 +198,9 @@ static irqreturn_t ocelot_xtr_irq_handle
+
+ static irqreturn_t ocelot_ptp_rdy_irq_handler(int irq, void *arg)
+ {
+- int budget = OCELOT_PTP_QUEUE_SZ;
+ struct ocelot *ocelot = arg;
+
+- while (budget--) {
+- struct skb_shared_hwtstamps shhwtstamps;
+- struct list_head *pos, *tmp;
+- struct sk_buff *skb = NULL;
+- struct ocelot_skb *entry;
+- struct ocelot_port *port;
+- struct timespec64 ts;
+- u32 val, id, txport;
+-
+- val = ocelot_read(ocelot, SYS_PTP_STATUS);
+-
+- /* Check if a timestamp can be retrieved */
+- if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD))
+- break;
+-
+- WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL);
+-
+- /* Retrieve the ts ID and Tx port */
+- id = SYS_PTP_STATUS_PTP_MESS_ID_X(val);
+- txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val);
+-
+- /* Retrieve its associated skb */
+- port = ocelot->ports[txport];
+-
+- list_for_each_safe(pos, tmp, &port->skbs) {
+- entry = list_entry(pos, struct ocelot_skb, head);
+- if (entry->id != id)
+- continue;
+-
+- skb = entry->skb;
+-
+- list_del(pos);
+- kfree(entry);
+- }
+-
+- /* Next ts */
+- ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT);
+-
+- if (unlikely(!skb))
+- continue;
+-
+- /* Get the h/w timestamp */
+- ocelot_get_hwtimestamp(ocelot, &ts);
+-
+- /* Set the timestamp into the skb */
+- memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+- shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
+- skb_tstamp_tx(skb, &shhwtstamps);
+-
+- dev_kfree_skb_any(skb);
+- }
++ ocelot_get_txtstamp(ocelot);
+
+ return IRQ_HANDLED;
+ }
+--- a/include/soc/mscc/ocelot.h
++++ b/include/soc/mscc/ocelot.h
+@@ -406,6 +406,13 @@ struct ocelot_ops {
+ int (*reset)(struct ocelot *ocelot);
+ };
+
++struct ocelot_skb {
++ struct list_head head;
++ struct sk_buff *skb;
++ u8 id;
++};
++
++
+ struct ocelot_port {
+ struct ocelot *ocelot;
+
+@@ -536,6 +543,6 @@ int ocelot_vlan_del(struct ocelot *ocelo
+ int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr);
+ int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr);
+ int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
+-void ocelot_get_hwtimestamp(struct ocelot *ocelot, struct timespec64 *ts);
++void ocelot_get_txtstamp(struct ocelot *ocelot);
+
+ #endif