[dpdk-dev] [PATCH 35/37] net/sfc/base: modify phy caps to indicate FEC request

[Andrew Rybchenko]

From: Richard Houldsworth <rhouldsworth at solarflare.com>

The capability bits to request FEC modes are implicitly valid
when the corresponding FEC mode is a supported capability.
Drivers expect that it is only valid to advertise those
capabilities explicitly marked as supported. The capabilities
reported by firmware is modified with the implicit capabilities
to present the explicit model to drivers.

Signed-off-by: Richard Houldsworth <rhouldsworth at solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/base/ef10_nic.c | 15 +++++++++++++++
 drivers/net/sfc/base/efx_phy.c  |  8 +-------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 0a2474f3e..b54cd3940 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -1772,6 +1772,21 @@ ef10_nic_board_cfg(
 	if ((rc = efx_mcdi_get_phy_cfg(enp)) != 0)
 		goto fail6;
 
+	/*
+	 * Firmware with support for *_FEC capability bits does not
+	 * report that the corresponding *_FEC_REQUESTED bits are supported.
+	 * Add them here so that drivers understand that they are supported.
+	 */
+	if (epp->ep_phy_cap_mask & (1u << EFX_PHY_CAP_BASER_FEC))
+		epp->ep_phy_cap_mask |=
+		    (1u << EFX_PHY_CAP_BASER_FEC_REQUESTED);
+	if (epp->ep_phy_cap_mask & (1u << EFX_PHY_CAP_RS_FEC))
+		epp->ep_phy_cap_mask |=
+		    (1u << EFX_PHY_CAP_RS_FEC_REQUESTED);
+	if (epp->ep_phy_cap_mask & (1u << EFX_PHY_CAP_25G_BASER_FEC))
+		epp->ep_phy_cap_mask |=
+		    (1u << EFX_PHY_CAP_25G_BASER_FEC_REQUESTED);
+
 	/* Obtain the default PHY advertised capabilities */
 	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
 		goto fail7;
diff --git a/drivers/net/sfc/base/efx_phy.c b/drivers/net/sfc/base/efx_phy.c
index 7c341e429..25059dfe1 100644
--- a/drivers/net/sfc/base/efx_phy.c
+++ b/drivers/net/sfc/base/efx_phy.c
@@ -192,11 +192,6 @@ efx_phy_adv_cap_get(
 	}
 }
 
-#define	EFX_PHY_CAP_FEC_REQ_MASK			\
-	(1U << EFX_PHY_CAP_BASER_FEC_REQUESTED)	|	\
-	(1U << EFX_PHY_CAP_RS_FEC_REQUESTED)	|	\
-	(1U << EFX_PHY_CAP_25G_BASER_FEC_REQUESTED)
-
 	__checkReturn	efx_rc_t
 efx_phy_adv_cap_set(
 	__in		efx_nic_t *enp,
@@ -210,8 +205,7 @@ efx_phy_adv_cap_set(
 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
 
-	/* Ignore don't care bits of FEC (FEC EFX_PHY_CAP_*_REQUESTED) */
-	if ((mask & ~(epp->ep_phy_cap_mask | EFX_PHY_CAP_FEC_REQ_MASK)) != 0) {
+	if ((mask & ~epp->ep_phy_cap_mask) != 0) {
 		rc = ENOTSUP;
 		goto fail1;
 	}
-- 
2.17.1