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bnxt_en: Implement ethtool set_fec_param() method. 

This feature allows the user to set the different FEC modes on the NIC
port.  Any new setting will take effect immediately after a link toggle.

Reviewed-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2020-09-27 13:42:19 -04:00 committed by David S. Miller
parent 2046e3c356
commit ccd6a9dcab
3 changed files with 107 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -8890,7 +8890,7 @@ static bool bnxt_support_dropped(u16 advertising, u16 supported)
return ((supported | diff) != supported);
}
static int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
{
int rc = 0;
struct bnxt_link_info *link_info = &bp->link_info;

44
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1259,6 +1259,49 @@ struct bnxt_link_info {
struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
};
#define BNXT_FEC_RS544_ON \
(PORT_PHY_CFG_REQ_FLAGS_FEC_RS544_1XN_ENABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_RS544_IEEE_ENABLE)
#define BNXT_FEC_RS544_OFF \
(PORT_PHY_CFG_REQ_FLAGS_FEC_RS544_1XN_DISABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_RS544_IEEE_DISABLE)
#define BNXT_FEC_RS272_ON \
(PORT_PHY_CFG_REQ_FLAGS_FEC_RS272_1XN_ENABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_RS272_IEEE_ENABLE)
#define BNXT_FEC_RS272_OFF \
(PORT_PHY_CFG_REQ_FLAGS_FEC_RS272_1XN_DISABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_RS272_IEEE_DISABLE)
#define BNXT_PAM4_SUPPORTED(link_info) \
((link_info)->support_pam4_speeds)
#define BNXT_FEC_RS_ON(link_info) \
(PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE91_ENABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE74_DISABLE | \
(BNXT_PAM4_SUPPORTED(link_info) ? \
(BNXT_FEC_RS544_ON | BNXT_FEC_RS272_OFF) : 0))
#define BNXT_FEC_LLRS_ON \
(PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE91_ENABLE | \
PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE74_DISABLE | \
BNXT_FEC_RS272_ON | BNXT_FEC_RS544_OFF)
#define BNXT_FEC_RS_OFF(link_info) \
(PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE91_DISABLE | \
(BNXT_PAM4_SUPPORTED(link_info) ? \
(BNXT_FEC_RS544_OFF | BNXT_FEC_RS272_OFF) : 0))
#define BNXT_FEC_BASE_R_ON(link_info) \
(PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE74_ENABLE | \
BNXT_FEC_RS_OFF(link_info))
#define BNXT_FEC_ALL_OFF(link_info) \
(PORT_PHY_CFG_REQ_FLAGS_FEC_CLAUSE74_DISABLE | \
BNXT_FEC_RS_OFF(link_info))
#define BNXT_MAX_QUEUE 8
struct bnxt_queue_info {
@ -2125,6 +2168,7 @@ int bnxt_get_avail_msix(struct bnxt *bp, int num);
int bnxt_reserve_rings(struct bnxt *bp, bool irq_re_init);
void bnxt_tx_disable(struct bnxt *bp);
void bnxt_tx_enable(struct bnxt *bp);
int bnxt_update_link(struct bnxt *bp, bool chng_link_state);
int bnxt_hwrm_set_pause(struct bnxt *);
int bnxt_hwrm_set_link_setting(struct bnxt *, bool, bool);
int bnxt_hwrm_alloc_wol_fltr(struct bnxt *bp);

62
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -1924,6 +1924,67 @@ static int bnxt_get_fecparam(struct net_device *dev,
return 0;
}
static u32 bnxt_ethtool_forced_fec_to_fw(struct bnxt_link_info *link_info,
u32 fec)
{
u32 fw_fec = PORT_PHY_CFG_REQ_FLAGS_FEC_AUTONEG_DISABLE;
if (fec & ETHTOOL_FEC_BASER)
fw_fec |= BNXT_FEC_BASE_R_ON(link_info);
else if (fec & ETHTOOL_FEC_RS)
fw_fec |= BNXT_FEC_RS_ON(link_info);
else if (fec & ETHTOOL_FEC_LLRS)
fw_fec |= BNXT_FEC_LLRS_ON;
return fw_fec;
}
static int bnxt_set_fecparam(struct net_device *dev,
struct ethtool_fecparam *fecparam)
{
struct hwrm_port_phy_cfg_input req = {0};
struct bnxt *bp = netdev_priv(dev);
struct bnxt_link_info *link_info;
u32 new_cfg, fec = fecparam->fec;
u16 fec_cfg;
int rc;
link_info = &bp->link_info;
fec_cfg = link_info->fec_cfg;
if (fec_cfg & BNXT_FEC_NONE)
return -EOPNOTSUPP;
if (fec & ETHTOOL_FEC_OFF) {
new_cfg = PORT_PHY_CFG_REQ_FLAGS_FEC_AUTONEG_DISABLE |
BNXT_FEC_ALL_OFF(link_info);
goto apply_fec;
}
if (((fec & ETHTOOL_FEC_AUTO) && !(fec_cfg & BNXT_FEC_AUTONEG_CAP)) ||
((fec & ETHTOOL_FEC_RS) && !(fec_cfg & BNXT_FEC_ENC_RS_CAP)) ||
((fec & ETHTOOL_FEC_LLRS) && !(fec_cfg & BNXT_FEC_ENC_LLRS_CAP)) ||
((fec & ETHTOOL_FEC_BASER) && !(fec_cfg & BNXT_FEC_ENC_BASE_R_CAP)))
return -EINVAL;
if (fec & ETHTOOL_FEC_AUTO) {
if (!link_info->autoneg)
return -EINVAL;
new_cfg = PORT_PHY_CFG_REQ_FLAGS_FEC_AUTONEG_ENABLE;
} else {
new_cfg = bnxt_ethtool_forced_fec_to_fw(link_info, fec);
}
apply_fec:
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_CFG, -1, -1);
req.flags = cpu_to_le32(new_cfg | PORT_PHY_CFG_REQ_FLAGS_RESET_PHY);
rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
/* update current settings */
if (!rc) {
mutex_lock(&bp->link_lock);
bnxt_update_link(bp, false);
mutex_unlock(&bp->link_lock);
}
return rc;
}
static void bnxt_get_pauseparam(struct net_device *dev,
struct ethtool_pauseparam *epause)
{
@ -3830,6 +3891,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
.get_link_ksettings = bnxt_get_link_ksettings,
.set_link_ksettings = bnxt_set_link_ksettings,
.get_fecparam = bnxt_get_fecparam,
.set_fecparam = bnxt_set_fecparam,
.get_pause_stats = bnxt_get_pause_stats,
.get_pauseparam = bnxt_get_pauseparam,
.set_pauseparam = bnxt_set_pauseparam,