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path: root/drivers/net/pcs/pcs-lynx.c
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Diffstat (limited to 'drivers/net/pcs/pcs-lynx.c')
-rw-r--r--drivers/net/pcs/pcs-lynx.c126
1 files changed, 50 insertions, 76 deletions
diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index b79aedad855b..73e1364ad1ed 100644
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -35,6 +35,28 @@ enum sgmii_speed {
#define phylink_pcs_to_lynx(pl_pcs) container_of((pl_pcs), struct lynx_pcs, pcs)
#define lynx_to_phylink_pcs(lynx) (&(lynx)->pcs)
+static unsigned int lynx_pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
+{
+ switch (interface) {
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_QSGMII:
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ case PHY_INTERFACE_MODE_10GBASER:
+ return LINK_INBAND_DISABLE;
+
+ case PHY_INTERFACE_MODE_USXGMII:
+ case PHY_INTERFACE_MODE_10G_QXGMII:
+ return LINK_INBAND_ENABLE;
+
+ default:
+ return 0;
+ }
+}
+
static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs,
struct phylink_link_state *state)
{
@@ -58,42 +80,20 @@ static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs,
phylink_decode_usxgmii_word(state, lpa);
}
-static void lynx_pcs_get_state_2500basex(struct mdio_device *pcs,
- struct phylink_link_state *state)
-{
- int bmsr;
-
- bmsr = mdiodev_read(pcs, MII_BMSR);
- if (bmsr < 0) {
- state->link = false;
- return;
- }
-
- state->link = !!(bmsr & BMSR_LSTATUS);
- state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE);
- if (!state->link)
- return;
-
- state->speed = SPEED_2500;
- state->pause |= MLO_PAUSE_TX | MLO_PAUSE_RX;
- state->duplex = DUPLEX_FULL;
-}
-
-static void lynx_pcs_get_state(struct phylink_pcs *pcs,
+static void lynx_pcs_get_state(struct phylink_pcs *pcs, unsigned int neg_mode,
struct phylink_link_state *state)
{
struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);
switch (state->interface) {
case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_QSGMII:
- phylink_mii_c22_pcs_get_state(lynx->mdio, state);
- break;
- case PHY_INTERFACE_MODE_2500BASEX:
- lynx_pcs_get_state_2500basex(lynx->mdio, state);
+ phylink_mii_c22_pcs_get_state(lynx->mdio, neg_mode, state);
break;
case PHY_INTERFACE_MODE_USXGMII:
+ case PHY_INTERFACE_MODE_10G_QXGMII:
lynx_pcs_get_state_usxgmii(lynx->mdio, state);
break;
case PHY_INTERFACE_MODE_10GBASER:
@@ -129,7 +129,8 @@ static int lynx_pcs_config_giga(struct mdio_device *pcs,
mdiodev_write(pcs, LINK_TIMER_HI, link_timer >> 16);
}
- if (interface == PHY_INTERFACE_MODE_1000BASEX) {
+ if (interface == PHY_INTERFACE_MODE_1000BASEX ||
+ interface == PHY_INTERFACE_MODE_2500BASEX) {
if_mode = 0;
} else {
/* SGMII and QSGMII */
@@ -149,6 +150,7 @@ static int lynx_pcs_config_giga(struct mdio_device *pcs,
}
static int lynx_pcs_config_usxgmii(struct mdio_device *pcs,
+ phy_interface_t interface,
const unsigned long *advertising,
unsigned int neg_mode)
{
@@ -156,7 +158,8 @@ static int lynx_pcs_config_usxgmii(struct mdio_device *pcs,
int addr = pcs->addr;
if (neg_mode != PHYLINK_PCS_NEG_INBAND_ENABLED) {
- dev_err(&pcs->dev, "USXGMII only supports in-band AN for now\n");
+ dev_err(&pcs->dev, "%s only supports in-band AN for now\n",
+ phy_modes(interface));
return -EOPNOTSUPP;
}
@@ -177,17 +180,12 @@ static int lynx_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_SGMII:
case PHY_INTERFACE_MODE_QSGMII:
+ case PHY_INTERFACE_MODE_2500BASEX:
return lynx_pcs_config_giga(lynx->mdio, ifmode, advertising,
neg_mode);
- case PHY_INTERFACE_MODE_2500BASEX:
- if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) {
- dev_err(&lynx->mdio->dev,
- "AN not supported on 3.125GHz SerDes lane\n");
- return -EOPNOTSUPP;
- }
- break;
case PHY_INTERFACE_MODE_USXGMII:
- return lynx_pcs_config_usxgmii(lynx->mdio, advertising,
+ case PHY_INTERFACE_MODE_10G_QXGMII:
+ return lynx_pcs_config_usxgmii(lynx->mdio, ifmode, advertising,
neg_mode);
case PHY_INTERFACE_MODE_10GBASER:
/* Nothing to do here for 10GBASER */
@@ -245,42 +243,6 @@ static void lynx_pcs_link_up_sgmii(struct mdio_device *pcs,
if_mode);
}
-/* 2500Base-X is SerDes protocol 7 on Felix and 6 on ENETC. It is a SerDes lane
- * clocked at 3.125 GHz which encodes symbols with 8b/10b and does not have
- * auto-negotiation of any link parameters. Electrically it is compatible with
- * a single lane of XAUI.
- * The hardware reference manual wants to call this mode SGMII, but it isn't
- * really, since the fundamental features of SGMII:
- * - Downgrading the link speed by duplicating symbols
- * - Auto-negotiation
- * are not there.
- * The speed is configured at 1000 in the IF_MODE because the clock frequency
- * is actually given by a PLL configured in the Reset Configuration Word (RCW).
- * Since there is no difference between fixed speed SGMII w/o AN and 802.3z w/o
- * AN, we call this PHY interface type 2500Base-X. In case a PHY negotiates a
- * lower link speed on line side, the system-side interface remains fixed at
- * 2500 Mbps and we do rate adaptation through pause frames.
- */
-static void lynx_pcs_link_up_2500basex(struct mdio_device *pcs,
- unsigned int neg_mode,
- int speed, int duplex)
-{
- u16 if_mode = 0;
-
- if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) {
- dev_err(&pcs->dev, "AN not supported for 2500BaseX\n");
- return;
- }
-
- if (duplex == DUPLEX_HALF)
- if_mode |= IF_MODE_HALF_DUPLEX;
- if_mode |= IF_MODE_SPEED(SGMII_SPEED_2500);
-
- mdiodev_modify(pcs, IF_MODE,
- IF_MODE_HALF_DUPLEX | IF_MODE_SPEED_MSK,
- if_mode);
-}
-
static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,
phy_interface_t interface,
int speed, int duplex)
@@ -292,10 +254,8 @@ static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,
case PHY_INTERFACE_MODE_QSGMII:
lynx_pcs_link_up_sgmii(lynx->mdio, neg_mode, speed, duplex);
break;
- case PHY_INTERFACE_MODE_2500BASEX:
- lynx_pcs_link_up_2500basex(lynx->mdio, neg_mode, speed, duplex);
- break;
case PHY_INTERFACE_MODE_USXGMII:
+ case PHY_INTERFACE_MODE_10G_QXGMII:
/* At the moment, only in-band AN is supported for USXGMII
* so nothing to do in link_up
*/
@@ -306,15 +266,27 @@ static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,
}
static const struct phylink_pcs_ops lynx_pcs_phylink_ops = {
+ .pcs_inband_caps = lynx_pcs_inband_caps,
.pcs_get_state = lynx_pcs_get_state,
.pcs_config = lynx_pcs_config,
.pcs_an_restart = lynx_pcs_an_restart,
.pcs_link_up = lynx_pcs_link_up,
};
+static const phy_interface_t lynx_interfaces[] = {
+ PHY_INTERFACE_MODE_SGMII,
+ PHY_INTERFACE_MODE_QSGMII,
+ PHY_INTERFACE_MODE_1000BASEX,
+ PHY_INTERFACE_MODE_2500BASEX,
+ PHY_INTERFACE_MODE_10GBASER,
+ PHY_INTERFACE_MODE_USXGMII,
+ PHY_INTERFACE_MODE_10G_QXGMII,
+};
+
static struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio)
{
struct lynx_pcs *lynx;
+ int i;
lynx = kzalloc(sizeof(*lynx), GFP_KERNEL);
if (!lynx)
@@ -323,9 +295,11 @@ static struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio)
mdio_device_get(mdio);
lynx->mdio = mdio;
lynx->pcs.ops = &lynx_pcs_phylink_ops;
- lynx->pcs.neg_mode = true;
lynx->pcs.poll = true;
+ for (i = 0; i < ARRAY_SIZE(lynx_interfaces); i++)
+ __set_bit(lynx_interfaces[i], lynx->pcs.supported_interfaces);
+
return lynx_to_phylink_pcs(lynx);
}
generated by cgit (git 2.34.1) at 2025-12-25 15:14:29 +0000