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path: root/drivers/net/ethernet/netronome/nfp
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-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_main.h3
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_common.c9
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h4
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c30
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_main.c55
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_port.h2
6 files changed, 79 insertions, 24 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.h b/drivers/net/ethernet/netronome/nfp/nfp_main.h
index f56ca11de134..be3746cbc58b 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.h
@@ -190,4 +190,7 @@ int nfp_shared_buf_pool_set(struct nfp_pf *pf, unsigned int sb,
int nfp_devlink_params_register(struct nfp_pf *pf);
void nfp_devlink_params_unregister(struct nfp_pf *pf);
+
+unsigned int nfp_net_lr2speed(unsigned int linkrate);
+unsigned int nfp_net_speed2lr(unsigned int speed);
#endif /* NFP_MAIN_H */
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index cf4d6f1129fa..fda3e77f28d2 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -474,19 +474,22 @@ static void nfp_net_read_link_status(struct nfp_net *nn)
{
unsigned long flags;
bool link_up;
- u32 sts;
+ u16 sts;
spin_lock_irqsave(&nn->link_status_lock, flags);
- sts = nn_readl(nn, NFP_NET_CFG_STS);
+ sts = nn_readw(nn, NFP_NET_CFG_STS);
link_up = !!(sts & NFP_NET_CFG_STS_LINK);
if (nn->link_up == link_up)
goto out;
nn->link_up = link_up;
- if (nn->port)
+ if (nn->port) {
set_bit(NFP_PORT_CHANGED, &nn->port->flags);
+ if (nn->port->link_cb)
+ nn->port->link_cb(nn->port);
+ }
if (nn->link_up) {
netif_carrier_on(nn->dp.netdev);
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
index ac05ec34d69e..91708527a47c 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h
@@ -193,6 +193,10 @@
#define NFP_NET_CFG_STS_LINK_RATE_40G 5
#define NFP_NET_CFG_STS_LINK_RATE_50G 6
#define NFP_NET_CFG_STS_LINK_RATE_100G 7
+/* NSP Link rate is a 16-bit word. It's determined by NSP and
+ * written to CFG BAR by NFP driver.
+ */
+#define NFP_NET_CFG_STS_NSP_LINK_RATE 0x0036
#define NFP_NET_CFG_CAP 0x0038
#define NFP_NET_CFG_MAX_TXRINGS 0x003c
#define NFP_NET_CFG_MAX_RXRINGS 0x0040
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index eeb1455a4e5d..cd2e67185e8c 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -273,20 +273,11 @@ static int
nfp_net_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
- static const u32 ls_to_ethtool[] = {
- [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0,
- [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN,
- [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000,
- [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000,
- [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000,
- [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000,
- [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000,
- [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000,
- };
struct nfp_eth_table_port *eth_port;
struct nfp_port *port;
struct nfp_net *nn;
- u32 sts, ls;
+ unsigned int speed;
+ u16 sts;
/* Init to unknowns */
ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
@@ -319,18 +310,15 @@ nfp_net_get_link_ksettings(struct net_device *netdev,
return -EOPNOTSUPP;
nn = netdev_priv(netdev);
- sts = nn_readl(nn, NFP_NET_CFG_STS);
-
- ls = FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts);
- if (ls == NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED)
+ sts = nn_readw(nn, NFP_NET_CFG_STS);
+ speed = nfp_net_lr2speed(FIELD_GET(NFP_NET_CFG_STS_LINK_RATE, sts));
+ if (!speed)
return -EOPNOTSUPP;
- if (ls == NFP_NET_CFG_STS_LINK_RATE_UNKNOWN ||
- ls >= ARRAY_SIZE(ls_to_ethtool))
- return 0;
-
- cmd->base.speed = ls_to_ethtool[ls];
- cmd->base.duplex = DUPLEX_FULL;
+ if (speed != SPEED_UNKNOWN) {
+ cmd->base.speed = speed;
+ cmd->base.duplex = DUPLEX_FULL;
+ }
return 0;
}
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
index ca4e05650fe6..dd668520851e 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_main.c
@@ -202,6 +202,9 @@ nfp_net_pf_alloc_vnics(struct nfp_pf *pf, void __iomem *ctrl_bar,
goto err_free_prev;
}
+ if (nn->port)
+ nn->port->link_cb = nfp_net_refresh_port_table;
+
ctrl_bar += NFP_PF_CSR_SLICE_SIZE;
/* Kill the vNIC if app init marked it as invalid */
@@ -523,6 +526,57 @@ err_unmap_ctrl:
return err;
}
+static const unsigned int lr_to_speed[] = {
+ [NFP_NET_CFG_STS_LINK_RATE_UNSUPPORTED] = 0,
+ [NFP_NET_CFG_STS_LINK_RATE_UNKNOWN] = SPEED_UNKNOWN,
+ [NFP_NET_CFG_STS_LINK_RATE_1G] = SPEED_1000,
+ [NFP_NET_CFG_STS_LINK_RATE_10G] = SPEED_10000,
+ [NFP_NET_CFG_STS_LINK_RATE_25G] = SPEED_25000,
+ [NFP_NET_CFG_STS_LINK_RATE_40G] = SPEED_40000,
+ [NFP_NET_CFG_STS_LINK_RATE_50G] = SPEED_50000,
+ [NFP_NET_CFG_STS_LINK_RATE_100G] = SPEED_100000,
+};
+
+unsigned int nfp_net_lr2speed(unsigned int linkrate)
+{
+ if (linkrate < ARRAY_SIZE(lr_to_speed))
+ return lr_to_speed[linkrate];
+
+ return SPEED_UNKNOWN;
+}
+
+unsigned int nfp_net_speed2lr(unsigned int speed)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(lr_to_speed); i++) {
+ if (speed == lr_to_speed[i])
+ return i;
+ }
+
+ return NFP_NET_CFG_STS_LINK_RATE_UNKNOWN;
+}
+
+static void nfp_net_notify_port_speed(struct nfp_port *port)
+{
+ struct net_device *netdev = port->netdev;
+ struct nfp_net *nn;
+ u16 sts;
+
+ if (!nfp_netdev_is_nfp_net(netdev))
+ return;
+
+ nn = netdev_priv(netdev);
+ sts = nn_readw(nn, NFP_NET_CFG_STS);
+
+ if (!(sts & NFP_NET_CFG_STS_LINK)) {
+ nn_writew(nn, NFP_NET_CFG_STS_NSP_LINK_RATE, NFP_NET_CFG_STS_LINK_RATE_UNKNOWN);
+ return;
+ }
+
+ nn_writew(nn, NFP_NET_CFG_STS_NSP_LINK_RATE, nfp_net_speed2lr(port->eth_port->speed));
+}
+
static int
nfp_net_eth_port_update(struct nfp_cpp *cpp, struct nfp_port *port,
struct nfp_eth_table *eth_table)
@@ -544,6 +598,7 @@ nfp_net_eth_port_update(struct nfp_cpp *cpp, struct nfp_port *port,
}
memcpy(port->eth_port, eth_port, sizeof(*eth_port));
+ nfp_net_notify_port_speed(port);
return 0;
}
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_port.h b/drivers/net/ethernet/netronome/nfp/nfp_port.h
index d1ebe6c72f7f..6793cdf9ff11 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_port.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_port.h
@@ -46,6 +46,7 @@ enum nfp_port_flags {
* @tc_offload_cnt: number of active TC offloads, how offloads are counted
* is not defined, use as a boolean
* @app: backpointer to the app structure
+ * @link_cb: callback when link status changed
* @dl_port: devlink port structure
* @eth_id: for %NFP_PORT_PHYS_PORT port ID in NFP enumeration scheme
* @eth_forced: for %NFP_PORT_PHYS_PORT port is forced UP or DOWN, don't change
@@ -66,6 +67,7 @@ struct nfp_port {
unsigned long tc_offload_cnt;
struct nfp_app *app;
+ void (*link_cb)(struct nfp_port *port);
struct devlink_port dl_port;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.