bnxt_en: Support new firmware link parameters

Newer firmware supporting PAM4 112Gbps speeds use new parameters in
firmware message structures.  Detect the new firmware capability and
add basic logic to report and store these new fields.
Reviewed-by: Hongguang Gao <hongguang.gao@broadcom.com>
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20231201223924.26955-13-michael.chan@broadcom.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -2250,6 +2250,10 @@ static u16 bnxt_agg_ring_id_to_grp_idx(struct bnxt *bp, u16 ring_id)
 
 static u16 bnxt_get_force_speed(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2)
+		return link_info->force_link_speed2;
 	if (link_info->req_signal_mode == BNXT_SIG_MODE_PAM4)
 		return link_info->force_pam4_link_speed;
 	return link_info->force_link_speed;
@@ -2257,6 +2261,28 @@ static u16 bnxt_get_force_speed(struct bnxt_link_info *link_info)
 
 static void bnxt_set_force_speed(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+		link_info->req_link_speed = link_info->force_link_speed2;
+		link_info->req_signal_mode = BNXT_SIG_MODE_NRZ;
+		switch (link_info->req_link_speed) {
+		case BNXT_LINK_SPEED_50GB_PAM4:
+		case BNXT_LINK_SPEED_100GB_PAM4:
+		case BNXT_LINK_SPEED_200GB_PAM4:
+		case BNXT_LINK_SPEED_400GB_PAM4:
+			link_info->req_signal_mode = BNXT_SIG_MODE_PAM4;
+			break;
+		case BNXT_LINK_SPEED_100GB_PAM4_112:
+		case BNXT_LINK_SPEED_200GB_PAM4_112:
+		case BNXT_LINK_SPEED_400GB_PAM4_112:
+			link_info->req_signal_mode = BNXT_SIG_MODE_PAM4_112;
+			break;
+		default:
+			link_info->req_signal_mode = BNXT_SIG_MODE_NRZ;
+		}
+		return;
+	}
 	link_info->req_link_speed = link_info->force_link_speed;
 	link_info->req_signal_mode = BNXT_SIG_MODE_NRZ;
 	if (link_info->force_pam4_link_speed) {
@@ -2267,12 +2293,25 @@ static void bnxt_set_force_speed(struct bnxt_link_info *link_info)
 
 static void bnxt_set_auto_speed(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+		link_info->advertising = link_info->auto_link_speeds2;
+		return;
+	}
 	link_info->advertising = link_info->auto_link_speeds;
 	link_info->advertising_pam4 = link_info->auto_pam4_link_speeds;
 }
 
 static bool bnxt_force_speed_updated(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+		if (link_info->req_link_speed != link_info->force_link_speed2)
+			return true;
+		return false;
+	}
 	if (link_info->req_signal_mode == BNXT_SIG_MODE_NRZ &&
 	    link_info->req_link_speed != link_info->force_link_speed)
 		return true;
@@ -2284,6 +2323,13 @@ static bool bnxt_force_speed_updated(struct bnxt_link_info *link_info)
 
 static bool bnxt_auto_speed_updated(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+		if (link_info->advertising != link_info->auto_link_speeds2)
+			return true;
+		return false;
+	}
 	if (link_info->advertising != link_info->auto_link_speeds ||
 	    link_info->advertising_pam4 != link_info->auto_pam4_link_speeds)
 		return true;
@@ -10082,7 +10128,10 @@ void bnxt_report_link(struct bnxt *bp)
 				signal = "(NRZ) ";
 				break;
 			case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4:
-				signal = "(PAM4) ";
+				signal = "(PAM4 56Gbps) ";
+				break;
+			case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4_112:
+				signal = "(PAM4 112Gbps) ";
 				break;
 			default:
 				break;
@@ -10110,7 +10159,9 @@ static bool bnxt_phy_qcaps_no_speed(struct hwrm_port_phy_qcaps_output *resp)
 	if (!resp->supported_speeds_auto_mode &&
 	    !resp->supported_speeds_force_mode &&
 	    !resp->supported_pam4_speeds_auto_mode &&
-	    !resp->supported_pam4_speeds_force_mode)
+	    !resp->supported_pam4_speeds_force_mode &&
+	    !resp->supported_speeds2_auto_mode &&
+	    !resp->supported_speeds2_force_mode)
 		return true;
 	return false;
 }
@@ -10156,6 +10207,7 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
 			/* Phy re-enabled, reprobe the speeds */
 			link_info->support_auto_speeds = 0;
 			link_info->support_pam4_auto_speeds = 0;
+			link_info->support_auto_speeds2 = 0;
 		}
 	}
 	if (resp->supported_speeds_auto_mode)
@@ -10164,6 +10216,9 @@ static int bnxt_hwrm_phy_qcaps(struct bnxt *bp)
 	if (resp->supported_pam4_speeds_auto_mode)
 		link_info->support_pam4_auto_speeds =
 			le16_to_cpu(resp->supported_pam4_speeds_auto_mode);
+	if (resp->supported_speeds2_auto_mode)
+		link_info->support_auto_speeds2 =
+			le16_to_cpu(resp->supported_speeds2_auto_mode);
 
 	bp->port_count = resp->port_cnt;
 
@@ -10181,9 +10236,19 @@ static bool bnxt_support_dropped(u16 advertising, u16 supported)
 
 static bool bnxt_support_speed_dropped(struct bnxt_link_info *link_info)
 {
+	struct bnxt *bp = container_of(link_info, struct bnxt, link_info);
+
 	/* Check if any advertised speeds are no longer supported. The caller
 	 * holds the link_lock mutex, so we can modify link_info settings.
 	 */
+	if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+		if (bnxt_support_dropped(link_info->advertising,
+					 link_info->support_auto_speeds2)) {
+			link_info->advertising = link_info->support_auto_speeds2;
+			return true;
+		}
+		return false;
+	}
 	if (bnxt_support_dropped(link_info->advertising,
 				 link_info->support_auto_speeds)) {
 		link_info->advertising = link_info->support_auto_speeds;
@@ -10232,18 +10297,25 @@ int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 	link_info->lp_pause = resp->link_partner_adv_pause;
 	link_info->force_pause_setting = resp->force_pause;
 	link_info->duplex_setting = resp->duplex_cfg;
-	if (link_info->phy_link_status == BNXT_LINK_LINK)
+	if (link_info->phy_link_status == BNXT_LINK_LINK) {
 		link_info->link_speed = le16_to_cpu(resp->link_speed);
-	else
+		if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2)
+			link_info->active_lanes = resp->active_lanes;
+	} else {
 		link_info->link_speed = 0;
+		link_info->active_lanes = 0;
+	}
 	link_info->force_link_speed = le16_to_cpu(resp->force_link_speed);
 	link_info->force_pam4_link_speed =
 		le16_to_cpu(resp->force_pam4_link_speed);
+	link_info->force_link_speed2 = le16_to_cpu(resp->force_link_speeds2);
 	link_info->support_speeds = le16_to_cpu(resp->support_speeds);
 	link_info->support_pam4_speeds = le16_to_cpu(resp->support_pam4_speeds);
+	link_info->support_speeds2 = le16_to_cpu(resp->support_speeds2);
 	link_info->auto_link_speeds = le16_to_cpu(resp->auto_link_speed_mask);
 	link_info->auto_pam4_link_speeds =
 		le16_to_cpu(resp->auto_pam4_link_speed_mask);
+	link_info->auto_link_speeds2 = le16_to_cpu(resp->auto_link_speeds2);
 	link_info->lp_auto_link_speeds =
 		le16_to_cpu(resp->link_partner_adv_speeds);
 	link_info->lp_auto_pam4_link_speeds =
@@ -10382,7 +10454,11 @@ static void bnxt_hwrm_set_link_common(struct bnxt *bp, struct hwrm_port_phy_cfg_
 {
 	if (bp->link_info.autoneg & BNXT_AUTONEG_SPEED) {
 		req->auto_mode |= PORT_PHY_CFG_REQ_AUTO_MODE_SPEED_MASK;
-		if (bp->link_info.advertising) {
+		if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+			req->enables |=
+				cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_AUTO_LINK_SPEEDS2_MASK);
+			req->auto_link_speeds2_mask = cpu_to_le16(bp->link_info.advertising);
+		} else if (bp->link_info.advertising) {
 			req->enables |= cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_AUTO_LINK_SPEED_MASK);
 			req->auto_link_speed_mask = cpu_to_le16(bp->link_info.advertising);
 		}
@@ -10396,7 +10472,12 @@ static void bnxt_hwrm_set_link_common(struct bnxt *bp, struct hwrm_port_phy_cfg_
 		req->flags |= cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_RESTART_AUTONEG);
 	} else {
 		req->flags |= cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE);
-		if (bp->link_info.req_signal_mode == BNXT_SIG_MODE_PAM4) {
+		if (bp->phy_flags & BNXT_PHY_FL_SPEEDS2) {
+			req->force_link_speeds2 = cpu_to_le16(bp->link_info.req_link_speed);
+			req->enables |= cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_FORCE_LINK_SPEEDS2);
+			netif_info(bp, link, bp->dev, "Forcing FW speed2: %d\n",
+				   (u32)bp->link_info.req_link_speed);
+		} else if (bp->link_info.req_signal_mode == BNXT_SIG_MODE_PAM4) {
 			req->force_pam4_link_speed = cpu_to_le16(bp->link_info.req_link_speed);
 			req->enables |= cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_FORCE_PAM4_LINK_SPEED);
 		} else {

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1360,6 +1360,7 @@ struct bnxt_link_info {
 #define BNXT_LINK_STATE_DOWN	1
 #define BNXT_LINK_STATE_UP	2
 #define BNXT_LINK_IS_UP(bp)	((bp)->link_info.link_state == BNXT_LINK_STATE_UP)
+	u8			active_lanes;
 	u8			duplex;
 #define BNXT_LINK_DUPLEX_HALF	PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF
 #define BNXT_LINK_DUPLEX_FULL	PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL
@@ -1394,8 +1395,11 @@ struct bnxt_link_info {
 #define BNXT_LINK_SPEED_50GB	PORT_PHY_QCFG_RESP_LINK_SPEED_50GB
 #define BNXT_LINK_SPEED_100GB	PORT_PHY_QCFG_RESP_LINK_SPEED_100GB
 #define BNXT_LINK_SPEED_200GB	PORT_PHY_QCFG_RESP_LINK_SPEED_200GB
+#define BNXT_LINK_SPEED_400GB	PORT_PHY_QCFG_RESP_LINK_SPEED_400GB
 	u16			support_speeds;
 	u16			support_pam4_speeds;
+	u16			support_speeds2;
+
 	u16			auto_link_speeds;	/* fw adv setting */
 #define BNXT_LINK_SPEED_MSK_100MB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_100MB
 #define BNXT_LINK_SPEED_MSK_1GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_1GB
@@ -1411,12 +1415,52 @@ struct bnxt_link_info {
 #define BNXT_LINK_PAM4_SPEED_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_50G
 #define BNXT_LINK_PAM4_SPEED_MSK_100GB PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_100G
 #define BNXT_LINK_PAM4_SPEED_MSK_200GB PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_200G
+	u16			auto_link_speeds2;
+#define BNXT_LINK_SPEEDS2_MSK_1GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_1GB
+#define BNXT_LINK_SPEEDS2_MSK_10GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_10GB
+#define BNXT_LINK_SPEEDS2_MSK_25GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_25GB
+#define BNXT_LINK_SPEEDS2_MSK_40GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_40GB
+#define BNXT_LINK_SPEEDS2_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_50GB
+#define BNXT_LINK_SPEEDS2_MSK_100GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB
+#define BNXT_LINK_SPEEDS2_MSK_50GB_PAM4	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_50GB_PAM4_56
+#define BNXT_LINK_SPEEDS2_MSK_100GB_PAM4	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB_PAM4_56
+#define BNXT_LINK_SPEEDS2_MSK_200GB_PAM4	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_200GB_PAM4_56
+#define BNXT_LINK_SPEEDS2_MSK_400GB_PAM4	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_400GB_PAM4_56
+#define BNXT_LINK_SPEEDS2_MSK_100GB_PAM4_112	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB_PAM4_112
+#define BNXT_LINK_SPEEDS2_MSK_200GB_PAM4_112	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_200GB_PAM4_112
+#define BNXT_LINK_SPEEDS2_MSK_400GB_PAM4_112	\
+	PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_400GB_PAM4_112
+
 	u16			support_auto_speeds;
 	u16			support_pam4_auto_speeds;
+	u16			support_auto_speeds2;
+
 	u16			lp_auto_link_speeds;
 	u16			lp_auto_pam4_link_speeds;
 	u16			force_link_speed;
 	u16			force_pam4_link_speed;
+	u16			force_link_speed2;
+#define BNXT_LINK_SPEED_50GB_PAM4	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_50GB_PAM4_56
+#define BNXT_LINK_SPEED_100GB_PAM4	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_100GB_PAM4_56
+#define BNXT_LINK_SPEED_200GB_PAM4	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_200GB_PAM4_56
+#define BNXT_LINK_SPEED_400GB_PAM4	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_400GB_PAM4_56
+#define BNXT_LINK_SPEED_100GB_PAM4_112	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_100GB_PAM4_112
+#define BNXT_LINK_SPEED_200GB_PAM4_112	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_200GB_PAM4_112
+#define BNXT_LINK_SPEED_400GB_PAM4_112	\
+	PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_400GB_PAM4_112
+
 	u32			preemphasis;
 	u8			module_status;
 	u8			active_fec_sig_mode;
@@ -1447,6 +1491,7 @@ struct bnxt_link_info {
 	u8			req_signal_mode;
 #define BNXT_SIG_MODE_NRZ	PORT_PHY_QCFG_RESP_SIGNAL_MODE_NRZ
 #define BNXT_SIG_MODE_PAM4	PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4
+#define BNXT_SIG_MODE_PAM4_112	PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4_112
 #define BNXT_SIG_MODE_MAX	(PORT_PHY_QCFG_RESP_SIGNAL_MODE_LAST + 1)
 	u8			req_duplex;
 	u8			req_flow_ctrl;
@@ -2337,6 +2382,7 @@ struct bnxt {
 #define BNXT_PHY_FL_NO_PAUSE		(PORT_PHY_QCAPS_RESP_FLAGS2_PAUSE_UNSUPPORTED << 8)
 #define BNXT_PHY_FL_NO_PFC		(PORT_PHY_QCAPS_RESP_FLAGS2_PFC_UNSUPPORTED << 8)
 #define BNXT_PHY_FL_BANK_SEL		(PORT_PHY_QCAPS_RESP_FLAGS2_BANK_ADDR_SUPPORTED << 8)
+#define BNXT_PHY_FL_SPEEDS2		(PORT_PHY_QCAPS_RESP_FLAGS2_SPEEDS2_SUPPORTED << 8)
 
 	u8			num_tests;
 	struct bnxt_test_info	*test_info;

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -2020,11 +2020,20 @@ u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed)
 	case BNXT_LINK_SPEED_40GB:
 		return SPEED_40000;
 	case BNXT_LINK_SPEED_50GB:
+	case BNXT_LINK_SPEED_50GB_PAM4:
 		return SPEED_50000;
 	case BNXT_LINK_SPEED_100GB:
+	case BNXT_LINK_SPEED_100GB_PAM4:
+	case BNXT_LINK_SPEED_100GB_PAM4_112:
 		return SPEED_100000;
 	case BNXT_LINK_SPEED_200GB:
+	case BNXT_LINK_SPEED_200GB_PAM4:
+	case BNXT_LINK_SPEED_200GB_PAM4_112:
 		return SPEED_200000;
+	case BNXT_LINK_SPEED_400GB:
+	case BNXT_LINK_SPEED_400GB_PAM4:
+	case BNXT_LINK_SPEED_400GB_PAM4_112:
+		return SPEED_400000;
 	default:
 		return SPEED_UNKNOWN;
 	}
@@ -2040,6 +2049,7 @@ static void bnxt_get_default_speeds(struct ethtool_link_ksettings *lk_ksettings,
 		base->duplex = DUPLEX_HALF;
 		if (link_info->duplex & BNXT_LINK_DUPLEX_FULL)
 			base->duplex = DUPLEX_FULL;
+		lk_ksettings->lanes = link_info->active_lanes;
 	} else if (!link_info->autoneg) {
 		base->speed = bnxt_fw_to_ethtool_speed(link_info->req_link_speed);
 		base->duplex = DUPLEX_HALF;