[dpdk-dev] [PATCH 09/11] net/sfc/base: add accessor to whole link status

[Andrew Rybchenko]

From: Richard Houldsworth <rhouldsworth at solarflare.com>

Add a function which makes an MCDI GET_LINK request and
packages up the results. Currently, the get-link function
is triggered from several entry points which then pass
on or store selected parts of the data. When the driver
needs to obtain the current link state, it is more
efficient to do this in a single call.

Signed-off-by: Richard Houldsworth <rhouldsworth at solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/base/ef10_impl.h | 10 +++-------
 drivers/net/sfc/base/ef10_mac.c  |  6 +++---
 drivers/net/sfc/base/ef10_nic.c  |  4 ++--
 drivers/net/sfc/base/ef10_phy.c  | 24 ++++++++++++++++--------
 drivers/net/sfc/base/efx.h       | 15 +++++++++++++++
 drivers/net/sfc/base/efx_impl.h  |  2 +-
 drivers/net/sfc/base/efx_phy.c   | 30 ++++++++++++++++++++++++++----
 7 files changed, 66 insertions(+), 25 deletions(-)

diff --git a/drivers/net/sfc/base/ef10_impl.h b/drivers/net/sfc/base/ef10_impl.h
index e43e26e68..f971063a1 100644
--- a/drivers/net/sfc/base/ef10_impl.h
+++ b/drivers/net/sfc/base/ef10_impl.h
@@ -593,11 +593,7 @@ ef10_nvram_buffer_finish(
 /* PHY */
 
 typedef struct ef10_link_state_s {
-	uint32_t		els_adv_cap_mask;
-	uint32_t		els_lp_cap_mask;
-	unsigned int		els_fcntl;
-	efx_phy_fec_type_t	els_fec;
-	efx_link_mode_t		els_link_mode;
+	efx_phy_link_state_t	epls;
 #if EFSYS_OPT_LOOPBACK
 	efx_loopback_type_t	els_loopback;
 #endif
@@ -634,9 +630,9 @@ ef10_phy_oui_get(
 	__out		uint32_t *ouip);
 
 extern	__checkReturn	efx_rc_t
-ef10_phy_fec_type_get(
+ef10_phy_link_state_get(
 	__in		efx_nic_t *enp,
-	__out		efx_phy_fec_type_t *fecp);
+	__out		efx_phy_link_state_t *eplsp);
 
 #if EFSYS_OPT_PHY_STATS
 
diff --git a/drivers/net/sfc/base/ef10_mac.c b/drivers/net/sfc/base/ef10_mac.c
index ab73828f1..9f10f6f79 100644
--- a/drivers/net/sfc/base/ef10_mac.c
+++ b/drivers/net/sfc/base/ef10_mac.c
@@ -22,10 +22,10 @@ ef10_mac_poll(
 	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
 		goto fail1;
 
-	epp->ep_adv_cap_mask = els.els_adv_cap_mask;
-	epp->ep_fcntl = els.els_fcntl;
+	epp->ep_adv_cap_mask = els.epls.epls_adv_cap_mask;
+	epp->ep_fcntl = els.epls.epls_fcntl;
 
-	*link_modep = els.els_link_mode;
+	*link_modep = els.epls.epls_link_mode;
 
 	return (0);
 
diff --git a/drivers/net/sfc/base/ef10_nic.c b/drivers/net/sfc/base/ef10_nic.c
index 1b3d60682..50e23b7d4 100644
--- a/drivers/net/sfc/base/ef10_nic.c
+++ b/drivers/net/sfc/base/ef10_nic.c
@@ -1852,8 +1852,8 @@ ef10_nic_board_cfg(
 	/* Obtain the default PHY advertised capabilities */
 	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
 		goto fail7;
-	epp->ep_default_adv_cap_mask = els.els_adv_cap_mask;
-	epp->ep_adv_cap_mask = els.els_adv_cap_mask;
+	epp->ep_default_adv_cap_mask = els.epls.epls_adv_cap_mask;
+	epp->ep_adv_cap_mask = els.epls.epls_adv_cap_mask;
 
 	/* Check capabilities of running datapath firmware */
 	if ((rc = ef10_get_datapath_caps(enp)) != 0)
diff --git a/drivers/net/sfc/base/ef10_phy.c b/drivers/net/sfc/base/ef10_phy.c
index ec3600e96..84ccdde5d 100644
--- a/drivers/net/sfc/base/ef10_phy.c
+++ b/drivers/net/sfc/base/ef10_phy.c
@@ -286,9 +286,9 @@ ef10_phy_get_link(
 	}
 
 	mcdi_phy_decode_cap(MCDI_OUT_DWORD(req, GET_LINK_OUT_CAP),
-			    &elsp->els_adv_cap_mask);
+			    &elsp->epls.epls_adv_cap_mask);
 	mcdi_phy_decode_cap(MCDI_OUT_DWORD(req, GET_LINK_OUT_LP_CAP),
-			    &elsp->els_lp_cap_mask);
+			    &elsp->epls.epls_lp_cap_mask);
 
 	if (req.emr_out_length_used < MC_CMD_GET_LINK_OUT_V2_LEN)
 		fec = MC_CMD_FEC_NONE;
@@ -298,8 +298,16 @@ ef10_phy_get_link(
 	mcdi_phy_decode_link_mode(enp, MCDI_OUT_DWORD(req, GET_LINK_OUT_FLAGS),
 			    MCDI_OUT_DWORD(req, GET_LINK_OUT_LINK_SPEED),
 			    MCDI_OUT_DWORD(req, GET_LINK_OUT_FCNTL),
-			    fec, &elsp->els_link_mode,
-			    &elsp->els_fcntl, &elsp->els_fec);
+			    fec, &elsp->epls.epls_link_mode,
+			    &elsp->epls.epls_fcntl, &elsp->epls.epls_fec);
+
+	if (req.emr_out_length_used < MC_CMD_GET_LINK_OUT_V2_LEN) {
+		elsp->epls.epls_ld_cap_mask = 0;
+	} else {
+		mcdi_phy_decode_cap(MCDI_OUT_DWORD(req, GET_LINK_OUT_V2_LD_CAP),
+				    &elsp->epls.epls_ld_cap_mask);
+	}
+
 
 #if EFSYS_OPT_LOOPBACK
 	/*
@@ -543,18 +551,18 @@ ef10_phy_oui_get(
 }
 
 	__checkReturn	efx_rc_t
-ef10_phy_fec_type_get(
+ef10_phy_link_state_get(
 	__in		efx_nic_t *enp,
-	__out		efx_phy_fec_type_t  *fecp)
+	__out		efx_phy_link_state_t  *eplsp)
 {
 	efx_rc_t rc;
 	ef10_link_state_t els;
 
-	/* Obtain the active FEC type */
+	/* Obtain the active link state */
 	if ((rc = ef10_phy_get_link(enp, &els)) != 0)
 		goto fail1;
 
-	*fecp = els.els_fec;
+	*eplsp = els.epls;
 
 	return (0);
 
diff --git a/drivers/net/sfc/base/efx.h b/drivers/net/sfc/base/efx.h
index 246708f9c..8e10e8934 100644
--- a/drivers/net/sfc/base/efx.h
+++ b/drivers/net/sfc/base/efx.h
@@ -3257,6 +3257,21 @@ efx_phy_fec_type_get(
 	__in		efx_nic_t *enp,
 	__out		efx_phy_fec_type_t *typep);
 
+typedef struct efx_phy_link_state_s {
+	uint32_t		epls_adv_cap_mask;
+	uint32_t		epls_lp_cap_mask;
+	uint32_t		epls_ld_cap_mask;
+	unsigned int		epls_fcntl;
+	efx_phy_fec_type_t	epls_fec;
+	efx_link_mode_t		epls_link_mode;
+} efx_phy_link_state_t;
+
+extern	__checkReturn	efx_rc_t
+efx_phy_link_state_get(
+	__in		efx_nic_t *enp,
+	__out		efx_phy_link_state_t  *eplsp);
+
+
 #ifdef	__cplusplus
 }
 #endif
diff --git a/drivers/net/sfc/base/efx_impl.h b/drivers/net/sfc/base/efx_impl.h
index 9f44d2f64..bad23f819 100644
--- a/drivers/net/sfc/base/efx_impl.h
+++ b/drivers/net/sfc/base/efx_impl.h
@@ -224,7 +224,7 @@ typedef struct efx_phy_ops_s {
 	efx_rc_t	(*epo_reconfigure)(efx_nic_t *);
 	efx_rc_t	(*epo_verify)(efx_nic_t *);
 	efx_rc_t	(*epo_oui_get)(efx_nic_t *, uint32_t *);
-	efx_rc_t	(*epo_fec_type_get)(efx_nic_t *, efx_phy_fec_type_t *);
+	efx_rc_t	(*epo_link_state_get)(efx_nic_t *, efx_phy_link_state_t *);
 #if EFSYS_OPT_PHY_STATS
 	efx_rc_t	(*epo_stats_update)(efx_nic_t *, efsys_mem_t *,
 					    uint32_t *);
diff --git a/drivers/net/sfc/base/efx_phy.c b/drivers/net/sfc/base/efx_phy.c
index 63b89e6a4..36a7bbd3d 100644
--- a/drivers/net/sfc/base/efx_phy.c
+++ b/drivers/net/sfc/base/efx_phy.c
@@ -15,7 +15,7 @@ static const efx_phy_ops_t	__efx_phy_siena_ops = {
 	siena_phy_reconfigure,		/* epo_reconfigure */
 	siena_phy_verify,		/* epo_verify */
 	siena_phy_oui_get,		/* epo_oui_get */
-	NULL,				/* epo_fec_type_get */
+	NULL,				/* epo_link_state_get */
 #if EFSYS_OPT_PHY_STATS
 	siena_phy_stats_update,		/* epo_stats_update */
 #endif	/* EFSYS_OPT_PHY_STATS */
@@ -35,7 +35,7 @@ static const efx_phy_ops_t	__efx_phy_ef10_ops = {
 	ef10_phy_reconfigure,		/* epo_reconfigure */
 	ef10_phy_verify,		/* epo_verify */
 	ef10_phy_oui_get,		/* epo_oui_get */
-	ef10_phy_fec_type_get,		/* epo_fec_type_get */
+	ef10_phy_link_state_get,	/* epo_link_state_get */
 #if EFSYS_OPT_PHY_STATS
 	ef10_phy_stats_update,		/* epo_stats_update */
 #endif	/* EFSYS_OPT_PHY_STATS */
@@ -321,19 +321,41 @@ efx_phy_module_get_info(
 efx_phy_fec_type_get(
 	__in		efx_nic_t *enp,
 	__out		efx_phy_fec_type_t *typep)
+{
+	efx_rc_t rc;
+	efx_phy_link_state_t epls;
+
+	if ((rc = efx_phy_link_state_get(enp, &epls)) != 0)
+		goto fail1;
+
+	*typep = epls.epls_fec;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+efx_phy_link_state_get(
+	__in		efx_nic_t *enp,
+	__out		efx_phy_link_state_t *eplsp)
 {
 	efx_port_t *epp = &(enp->en_port);
 	const efx_phy_ops_t *epop = epp->ep_epop;
 	efx_rc_t rc;
 
 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
 
-	if (epop->epo_fec_type_get == NULL) {
+	if (epop->epo_link_state_get == NULL) {
 		rc = ENOTSUP;
 		goto fail1;
 	}
 
-	if ((rc = epop->epo_fec_type_get(enp, typep)) != 0)
+	if ((rc = epop->epo_link_state_get(enp, eplsp)) != 0)
 		goto fail2;
 
 	return (0);
-- 
2.17.1