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Date: Wed, 20 Nov 2019 16:23:15 +0800
From: Yangbo Lu <yangbo.lu@....com>
To: netdev@...r.kernel.org,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
"David S . Miller" <davem@...emloft.net>,
Vladimir Oltean <vladimir.oltean@....com>,
Claudiu Manoil <claudiu.manoil@....com>,
Vivien Didelot <vivien.didelot@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
Richard Cochran <richardcochran@...il.com>
Cc: Yangbo Lu <yangbo.lu@....com>
Subject: [PATCH 2/5] 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@....com>
---
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(-)
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 7302724..a58d2ed 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -661,7 +661,8 @@ static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
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 ocelot *ocelot, struct timespec64 *ts)
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)
{
diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h
index 32fef4f..c259114 100644
--- 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);
diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c
index 5541ec2..2da8eee 100644
--- a/drivers/net/ethernet/mscc/ocelot_board.c
+++ b/drivers/net/ethernet/mscc/ocelot_board.c
@@ -190,60 +190,9 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg)
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;
}
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 2bac4bc..1a5cb1b 100644
--- 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 *ocelot, int port, u16 vid);
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
--
2.7.4
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