[dpdk-dev] [PATCH 6/7] net/bnxt: fix some link related issues

[Ajit Khaparde]

This patch fixes some link related issues that can occur because:

bnxt_hwrm_port_phy_cfg() was setting enables inappropriately.
bnxt_hwrm_port_phy_qcfg() was overly complex.
bnxt_get_hwrm_link_config() was basing the speed on the link status.
bnxt_get_hwrm_link_config() was using the incorrect macros for auto_mode
we are not using supported speeds from phy_qcfg for auto mask.

Fixes: 7bc8e9a227cc ("net/bnxt: support async link notification")

Signed-off-by: Stephen Hurd <stephen.hurd at broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt_hwrm.c | 48 ++++++++++++++++++++++++++------------------
 1 file changed, 29 insertions(+), 19 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 3d2d408..da078f9 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -628,6 +628,8 @@ static int bnxt_hwrm_port_phy_cfg(struct bnxt *bp, struct bnxt_link_info *conf)
 	struct hwrm_port_phy_cfg_input req = {0};
 	struct hwrm_port_phy_cfg_output *resp = bp->hwrm_cmd_resp_addr;
 	uint32_t enables = 0;
+	uint32_t link_speed_mask =
+		HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED_MASK;
 
 	HWRM_PREP(req, PORT_PHY_CFG, -1, resp);
 
@@ -639,14 +641,20 @@ static int bnxt_hwrm_port_phy_cfg(struct bnxt *bp, struct bnxt_link_info *conf)
 		 * any auto mode, even "none".
 		 */
 		if (!conf->link_speed) {
-			req.auto_mode |= conf->auto_mode;
-			enables = HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_MODE;
-			req.auto_link_speed_mask = conf->auto_link_speed_mask;
-			enables |=
-			   HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED_MASK;
-			req.auto_link_speed = bp->link_info.auto_link_speed;
-			enables |=
+			req.auto_mode = conf->auto_mode;
+			enables |= HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_MODE;
+			if (conf->auto_mode ==
+			    HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK) {
+				req.auto_link_speed_mask =
+					conf->auto_link_speed_mask;
+				enables |= link_speed_mask;
+			}
+			if (bp->link_info.auto_link_speed) {
+				req.auto_link_speed =
+					bp->link_info.auto_link_speed;
+				enables |=
 				HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED;
+			}
 		}
 		req.auto_duplex = conf->duplex;
 		enables |= HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_DUPLEX;
@@ -686,13 +694,10 @@ static int bnxt_hwrm_port_phy_qcfg(struct bnxt *bp,
 	HWRM_CHECK_RESULT;
 
 	link_info->phy_link_status = resp->link;
-	if (link_info->phy_link_status == HWRM_PORT_PHY_QCFG_OUTPUT_LINK_LINK) {
-		link_info->link_up = 1;
-		link_info->link_speed = rte_le_to_cpu_16(resp->link_speed);
-	} else {
-		link_info->link_up = 0;
-		link_info->link_speed = 0;
-	}
+	link_info->link_up =
+		(link_info->phy_link_status ==
+		 HWRM_PORT_PHY_QCFG_OUTPUT_LINK_LINK) ? 1 : 0;
+	link_info->link_speed = rte_le_to_cpu_16(resp->link_speed);
 	link_info->duplex = resp->duplex;
 	link_info->pause = resp->pause;
 	link_info->auto_pause = resp->auto_pause;
@@ -1790,12 +1795,16 @@ static int bnxt_valid_link_speed(uint32_t link_speed, uint8_t port_id)
 	return 0;
 }
 
-static uint16_t bnxt_parse_eth_link_speed_mask(uint32_t link_speed)
+static uint16_t
+bnxt_parse_eth_link_speed_mask(struct bnxt *bp, uint32_t link_speed)
 {
 	uint16_t ret = 0;
 
-	if (link_speed == ETH_LINK_SPEED_AUTONEG)
+	if (link_speed == ETH_LINK_SPEED_AUTONEG) {
+		if (bp->link_info.support_speeds)
+			return bp->link_info.support_speeds;
 		link_speed = BNXT_SUPPORTED_SPEEDS;
+	}
 
 	if (link_speed & ETH_LINK_SPEED_100M)
 		ret |= HWRM_PORT_PHY_CFG_INPUT_AUTO_LINK_SPEED_MASK_100MB;
@@ -1887,7 +1896,7 @@ int bnxt_get_hwrm_link_config(struct bnxt *bp, struct rte_eth_link *link)
 			"Get link config failed with rc %d\n", rc);
 		goto exit;
 	}
-	if (link_info->link_up)
+	if (link_info->link_speed)
 		link->link_speed =
 			bnxt_parse_hw_link_speed(link_info->link_speed);
 	else
@@ -1896,7 +1905,7 @@ int bnxt_get_hwrm_link_config(struct bnxt *bp, struct rte_eth_link *link)
 	link->link_status = link_info->link_up;
 	link->link_autoneg = link_info->auto_mode ==
 		HWRM_PORT_PHY_QCFG_OUTPUT_AUTO_MODE_NONE ?
-		ETH_LINK_SPEED_FIXED : ETH_LINK_SPEED_AUTONEG;
+		ETH_LINK_FIXED : ETH_LINK_AUTONEG;
 exit:
 	return rc;
 }
@@ -1929,7 +1938,8 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up)
 		link_req.auto_mode =
 				HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK;
 		link_req.auto_link_speed_mask =
-			bnxt_parse_eth_link_speed_mask(dev_conf->link_speeds);
+			bnxt_parse_eth_link_speed_mask(bp,
+						       dev_conf->link_speeds);
 	} else {
 		link_req.phy_flags |= HWRM_PORT_PHY_CFG_INPUT_FLAGS_FORCE;
 		link_req.link_speed = speed;
-- 
2.10.1 (Apple Git-78)