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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>
This commit is contained in:
Yangbo Lu 2019-11-20 16:23:15 +08:00 committed by Dong Aisheng
parent 04c967e8c4
commit b933c347ac
4 changed files with 69 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
drivers/net/ethernet/mscc/ocelot.c
View File

@ -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 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)
{

6
drivers/net/ethernet/mscc/ocelot.h
View File

@ -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);

53
drivers/net/ethernet/mscc/ocelot_board.c
View File

@ -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;
}

9
include/soc/mscc/ocelot.h
View File

@ -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