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dpaa_eth: add support for hardware timestamping

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This patch is to add hardware timestamping support
for dpaa_eth. On Rx, timestamping is enabled for
all frames. On Tx, we only instruct the hardware
to timestamp the frames marked accordingly by the
stack.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yangbo Lu 2018-06-25 20:37:15 +08:00 committed by David S. Miller
parent dcce36ab71
commit 4664856e9c
2 changed files with 86 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

88
drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
View File

@ -1168,7 +1168,7 @@ static int dpaa_eth_init_tx_port(struct fman_port *port, struct dpaa_fq *errq,
buf_prefix_content.priv_data_size = buf_layout->priv_data_size;
buf_prefix_content.pass_prs_result = true;
buf_prefix_content.pass_hash_result = true;
buf_prefix_content.pass_time_stamp = false;
buf_prefix_content.pass_time_stamp = true;
buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT;
params.specific_params.non_rx_params.err_fqid = errq->fqid;
@ -1210,7 +1210,7 @@ static int dpaa_eth_init_rx_port(struct fman_port *port, struct dpaa_bp **bps,
buf_prefix_content.priv_data_size = buf_layout->priv_data_size;
buf_prefix_content.pass_prs_result = true;
buf_prefix_content.pass_hash_result = true;
buf_prefix_content.pass_time_stamp = false;
buf_prefix_content.pass_time_stamp = true;
buf_prefix_content.data_align = DPAA_FD_DATA_ALIGNMENT;
rx_p = &params.specific_params.rx_params;
@ -1607,14 +1607,28 @@ static struct sk_buff *dpaa_cleanup_tx_fd(const struct dpaa_priv *priv,
{
const enum dma_data_direction dma_dir = DMA_TO_DEVICE;
struct device *dev = priv->net_dev->dev.parent;
struct skb_shared_hwtstamps shhwtstamps;
dma_addr_t addr = qm_fd_addr(fd);
const struct qm_sg_entry *sgt;
struct sk_buff **skbh, *skb;
int nr_frags, i;
u64 ns;
skbh = (struct sk_buff **)phys_to_virt(addr);
skb = *skbh;
if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
if (!fman_port_get_tstamp(priv->mac_dev->port[TX], (void *)skbh,
&ns)) {
shhwtstamps.hwtstamp = ns_to_ktime(ns);
skb_tstamp_tx(skb, &shhwtstamps);
} else {
dev_warn(dev, "fman_port_get_tstamp failed!\n");
}
}
if (unlikely(qm_fd_get_format(fd) == qm_fd_sg)) {
nr_frags = skb_shinfo(skb)->nr_frags;
dma_unmap_single(dev, addr, qm_fd_get_offset(fd) +
@ -2086,6 +2100,11 @@ static int dpaa_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
if (unlikely(err < 0))
goto skb_to_fd_failed;
if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
fd.cmd |= cpu_to_be32(FM_FD_CMD_UPD);
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
}
if (likely(dpaa_xmit(priv, percpu_stats, queue_mapping, &fd) == 0))
return NETDEV_TX_OK;
@ -2227,6 +2246,7 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
struct qman_fq *fq,
const struct qm_dqrr_entry *dq)
{
struct skb_shared_hwtstamps *shhwtstamps;
struct rtnl_link_stats64 *percpu_stats;
struct dpaa_percpu_priv *percpu_priv;
const struct qm_fd *fd = &dq->fd;
@ -2240,6 +2260,7 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
struct sk_buff *skb;
int *count_ptr;
void *vaddr;
u64 ns;
fd_status = be32_to_cpu(fd->status);
fd_format = qm_fd_get_format(fd);
@ -2304,6 +2325,16 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
if (!skb)
return qman_cb_dqrr_consume;
if (priv->rx_tstamp) {
shhwtstamps = skb_hwtstamps(skb);
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
if (!fman_port_get_tstamp(priv->mac_dev->port[RX], vaddr, &ns))
shhwtstamps->hwtstamp = ns_to_ktime(ns);
else
dev_warn(net_dev->dev.parent, "fman_port_get_tstamp failed!\n");
}
skb->protocol = eth_type_trans(skb, net_dev);
if (net_dev->features & NETIF_F_RXHASH && priv->keygen_in_use &&
@ -2523,11 +2554,58 @@ static int dpaa_eth_stop(struct net_device *net_dev)
return err;
}
static int dpaa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct dpaa_priv *priv = netdev_priv(dev);
struct hwtstamp_config config;
if (copy_from_user(&config, rq->ifr_data, sizeof(config)))
return -EFAULT;
switch (config.tx_type) {
case HWTSTAMP_TX_OFF:
/* Couldn't disable rx/tx timestamping separately.
* Do nothing here.
*/
priv->tx_tstamp = false;
break;
case HWTSTAMP_TX_ON:
priv->mac_dev->set_tstamp(priv->mac_dev->fman_mac, true);
priv->tx_tstamp = true;
break;
default:
return -ERANGE;
}
if (config.rx_filter == HWTSTAMP_FILTER_NONE) {
/* Couldn't disable rx/tx timestamping separately.
* Do nothing here.
*/
priv->rx_tstamp = false;
} else {
priv->mac_dev->set_tstamp(priv->mac_dev->fman_mac, true);
priv->rx_tstamp = true;
/* TS is set for all frame types, not only those requested */
config.rx_filter = HWTSTAMP_FILTER_ALL;
}
return copy_to_user(rq->ifr_data, &config, sizeof(config)) ?
-EFAULT : 0;
}
static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
{
if (!net_dev->phydev)
return -EINVAL;
return phy_mii_ioctl(net_dev->phydev, rq, cmd);
int ret = -EINVAL;
if (cmd == SIOCGMIIREG) {
if (net_dev->phydev)
return phy_mii_ioctl(net_dev->phydev, rq, cmd);
}
if (cmd == SIOCSHWTSTAMP)
return dpaa_ts_ioctl(net_dev, rq, cmd);
return ret;
}
static const struct net_device_ops dpaa_ops = {

3
drivers/net/ethernet/freescale/dpaa/dpaa_eth.h
View File

@ -182,6 +182,9 @@ struct dpaa_priv {
struct dpaa_buffer_layout buf_layout[2];
u16 rx_headroom;
bool tx_tstamp; /* Tx timestamping enabled */
bool rx_tstamp; /* Rx timestamping enabled */
};
/* from dpaa_ethtool.c */