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path: root/drivers/net/dsa/sja1105/sja1105_ptp.c
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Diffstat (limited to 'drivers/net/dsa/sja1105/sja1105_ptp.c')
-rw-r--r--drivers/net/dsa/sja1105/sja1105_ptp.c86
1 files changed, 56 insertions, 30 deletions
diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.c b/drivers/net/dsa/sja1105/sja1105_ptp.c
index 54396992a919..be3068a935af 100644
--- a/drivers/net/dsa/sja1105/sja1105_ptp.c
+++ b/drivers/net/dsa/sja1105/sja1105_ptp.c
@@ -58,13 +58,12 @@ enum sja1105_ptp_clk_mode {
#define ptp_data_to_sja1105(d) \
container_of((d), struct sja1105_private, ptp_data)
-/* Must be called only with priv->tagger_data.state bit
- * SJA1105_HWTS_RX_EN cleared
+/* Must be called only while the RX timestamping state of the tagger
+ * is turned off
*/
static int sja1105_change_rxtstamping(struct sja1105_private *priv,
bool on)
{
- struct sja1105_tagger_data *tagger_data = &priv->tagger_data;
struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
struct sja1105_general_params_entry *general_params;
struct sja1105_table *table;
@@ -74,13 +73,8 @@ static int sja1105_change_rxtstamping(struct sja1105_private *priv,
general_params->send_meta1 = on;
general_params->send_meta0 = on;
- /* Initialize the meta state machine to a known state */
- if (priv->tagger_data.stampable_skb) {
- kfree_skb(priv->tagger_data.stampable_skb);
- priv->tagger_data.stampable_skb = NULL;
- }
ptp_cancel_worker_sync(ptp_data->clock);
- skb_queue_purge(&tagger_data->skb_txtstamp_queue);
+ skb_queue_purge(&ptp_data->skb_txtstamp_queue);
skb_queue_purge(&ptp_data->skb_rxtstamp_queue);
return sja1105_static_config_reload(priv, SJA1105_RX_HWTSTAMPING);
@@ -88,6 +82,7 @@ static int sja1105_change_rxtstamping(struct sja1105_private *priv,
int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr)
{
+ struct sja1105_tagger_data *tagger_data = sja1105_tagger_data(ds);
struct sja1105_private *priv = ds->priv;
struct hwtstamp_config config;
bool rx_on;
@@ -98,10 +93,10 @@ int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr)
switch (config.tx_type) {
case HWTSTAMP_TX_OFF:
- priv->ports[port].hwts_tx_en = false;
+ priv->hwts_tx_en &= ~BIT(port);
break;
case HWTSTAMP_TX_ON:
- priv->ports[port].hwts_tx_en = true;
+ priv->hwts_tx_en |= BIT(port);
break;
default:
return -ERANGE;
@@ -116,8 +111,8 @@ int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr)
break;
}
- if (rx_on != test_bit(SJA1105_HWTS_RX_EN, &priv->tagger_data.state)) {
- clear_bit(SJA1105_HWTS_RX_EN, &priv->tagger_data.state);
+ if (rx_on != tagger_data->rxtstamp_get_state(ds)) {
+ tagger_data->rxtstamp_set_state(ds, false);
rc = sja1105_change_rxtstamping(priv, rx_on);
if (rc < 0) {
@@ -126,7 +121,7 @@ int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr)
return rc;
}
if (rx_on)
- set_bit(SJA1105_HWTS_RX_EN, &priv->tagger_data.state);
+ tagger_data->rxtstamp_set_state(ds, true);
}
if (copy_to_user(ifr->ifr_data, &config, sizeof(config)))
@@ -136,15 +131,16 @@ int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr)
int sja1105_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr)
{
+ struct sja1105_tagger_data *tagger_data = sja1105_tagger_data(ds);
struct sja1105_private *priv = ds->priv;
struct hwtstamp_config config;
config.flags = 0;
- if (priv->ports[port].hwts_tx_en)
+ if (priv->hwts_tx_en & BIT(port))
config.tx_type = HWTSTAMP_TX_ON;
else
config.tx_type = HWTSTAMP_TX_OFF;
- if (test_bit(SJA1105_HWTS_RX_EN, &priv->tagger_data.state))
+ if (tagger_data->rxtstamp_get_state(ds))
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
else
config.rx_filter = HWTSTAMP_FILTER_NONE;
@@ -417,10 +413,11 @@ static long sja1105_rxtstamp_work(struct ptp_clock_info *ptp)
bool sja1105_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb)
{
+ struct sja1105_tagger_data *tagger_data = sja1105_tagger_data(ds);
struct sja1105_private *priv = ds->priv;
struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
- if (!test_bit(SJA1105_HWTS_RX_EN, &priv->tagger_data.state))
+ if (!tagger_data->rxtstamp_get_state(ds))
return false;
/* We need to read the full PTP clock to reconstruct the Rx
@@ -453,6 +450,39 @@ bool sja1105_port_rxtstamp(struct dsa_switch *ds, int port,
return priv->info->rxtstamp(ds, port, skb);
}
+void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, u8 ts_id,
+ enum sja1110_meta_tstamp dir, u64 tstamp)
+{
+ struct sja1105_private *priv = ds->priv;
+ struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
+ struct sk_buff *skb, *skb_tmp, *skb_match = NULL;
+ struct skb_shared_hwtstamps shwt = {0};
+
+ /* We don't care about RX timestamps on the CPU port */
+ if (dir == SJA1110_META_TSTAMP_RX)
+ return;
+
+ spin_lock(&ptp_data->skb_txtstamp_queue.lock);
+
+ skb_queue_walk_safe(&ptp_data->skb_txtstamp_queue, skb, skb_tmp) {
+ if (SJA1105_SKB_CB(skb)->ts_id != ts_id)
+ continue;
+
+ __skb_unlink(skb, &ptp_data->skb_txtstamp_queue);
+ skb_match = skb;
+
+ break;
+ }
+
+ spin_unlock(&ptp_data->skb_txtstamp_queue.lock);
+
+ if (WARN_ON(!skb_match))
+ return;
+
+ shwt.hwtstamp = ns_to_ktime(sja1105_ticks_to_ns(tstamp));
+ skb_complete_tx_timestamp(skb_match, &shwt);
+}
+
/* In addition to cloning the skb which is done by the common
* sja1105_port_txtstamp, we need to generate a timestamp ID and save the
* packet to the TX timestamping queue.
@@ -461,22 +491,22 @@ void sja1110_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb)
{
struct sk_buff *clone = SJA1105_SKB_CB(skb)->clone;
struct sja1105_private *priv = ds->priv;
- struct sja1105_port *sp = &priv->ports[port];
+ struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
u8 ts_id;
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
- spin_lock(&sp->data->meta_lock);
+ spin_lock(&priv->ts_id_lock);
- ts_id = sp->data->ts_id;
+ ts_id = priv->ts_id;
/* Deal automatically with 8-bit wraparound */
- sp->data->ts_id++;
+ priv->ts_id++;
SJA1105_SKB_CB(clone)->ts_id = ts_id;
- spin_unlock(&sp->data->meta_lock);
+ spin_unlock(&priv->ts_id_lock);
- skb_queue_tail(&sp->data->skb_txtstamp_queue, clone);
+ skb_queue_tail(&ptp_data->skb_txtstamp_queue, clone);
}
/* Called from dsa_skb_tx_timestamp. This callback is just to clone
@@ -486,10 +516,9 @@ void sja1110_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb)
void sja1105_port_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb)
{
struct sja1105_private *priv = ds->priv;
- struct sja1105_port *sp = &priv->ports[port];
struct sk_buff *clone;
- if (!sp->hwts_tx_en)
+ if (!(priv->hwts_tx_en & BIT(port)))
return;
clone = skb_clone_sk(skb);
@@ -896,7 +925,6 @@ static struct ptp_pin_desc sja1105_ptp_pin = {
int sja1105_ptp_clock_register(struct dsa_switch *ds)
{
struct sja1105_private *priv = ds->priv;
- struct sja1105_tagger_data *tagger_data = &priv->tagger_data;
struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
ptp_data->caps = (struct ptp_clock_info) {
@@ -919,8 +947,7 @@ int sja1105_ptp_clock_register(struct dsa_switch *ds)
/* Only used on SJA1105 */
skb_queue_head_init(&ptp_data->skb_rxtstamp_queue);
/* Only used on SJA1110 */
- skb_queue_head_init(&tagger_data->skb_txtstamp_queue);
- spin_lock_init(&tagger_data->meta_lock);
+ skb_queue_head_init(&ptp_data->skb_txtstamp_queue);
ptp_data->clock = ptp_clock_register(&ptp_data->caps, ds->dev);
if (IS_ERR_OR_NULL(ptp_data->clock))
@@ -937,7 +964,6 @@ int sja1105_ptp_clock_register(struct dsa_switch *ds)
void sja1105_ptp_clock_unregister(struct dsa_switch *ds)
{
struct sja1105_private *priv = ds->priv;
- struct sja1105_tagger_data *tagger_data = &priv->tagger_data;
struct sja1105_ptp_data *ptp_data = &priv->ptp_data;
if (IS_ERR_OR_NULL(ptp_data->clock))
@@ -945,7 +971,7 @@ void sja1105_ptp_clock_unregister(struct dsa_switch *ds)
del_timer_sync(&ptp_data->extts_timer);
ptp_cancel_worker_sync(ptp_data->clock);
- skb_queue_purge(&tagger_data->skb_txtstamp_queue);
+ skb_queue_purge(&ptp_data->skb_txtstamp_queue);
skb_queue_purge(&ptp_data->skb_rxtstamp_queue);
ptp_clock_unregister(ptp_data->clock);
ptp_data->clock = NULL;