From 3bdf79031ac9991210af55902aa632adde32d938 Mon Sep 17 00:00:00 2001 From: Ajit Khaparde Date: Sat, 24 Feb 2018 21:02:16 -0800 Subject: [PATCH] net/bnxt: fix link speed setting with autoneg off [ backported from upstream commit 90cc14d77359bb3f8e48f4ef966ee77a52703949 ] When Autoneg is turned off especially on remote side, link does not come up. This patch fixes that. Fixes: 7bc8e9a227cc ("net/bnxt: support async link notification") Signed-off-by: Ajit Khaparde --- drivers/net/bnxt/bnxt.h | 1 + drivers/net/bnxt/bnxt_hwrm.c | 25 ++++++++++++++++++++++--- 2 files changed, 23 insertions(+), 3 deletions(-) diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h index 8ab1c7f85..3bc2b9379 100644 --- a/drivers/net/bnxt/bnxt.h +++ b/drivers/net/bnxt/bnxt.h @@ -162,6 +162,7 @@ struct bnxt_link_info { uint16_t link_speed; uint16_t support_speeds; uint16_t auto_link_speed; + uint16_t force_link_speed; uint16_t auto_link_speed_mask; uint32_t preemphasis; uint8_t phy_type; diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c index 51b0056cd..ce214d7cb 100644 --- a/drivers/net/bnxt/bnxt_hwrm.c +++ b/drivers/net/bnxt/bnxt_hwrm.c @@ -738,7 +738,8 @@ static int bnxt_hwrm_port_phy_cfg(struct bnxt *bp, struct bnxt_link_info *conf) HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_ALL_SPEEDS; } /* AutoNeg - Advertise speeds specified. */ - if (conf->auto_link_speed_mask) { + if (conf->auto_link_speed_mask && + !(conf->phy_flags & HWRM_PORT_PHY_CFG_INPUT_FLAGS_FORCE)) { req.auto_mode = HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK; req.auto_link_speed_mask = @@ -801,12 +802,22 @@ static int bnxt_hwrm_port_phy_qcfg(struct bnxt *bp, link_info->support_speeds = rte_le_to_cpu_16(resp->support_speeds); link_info->auto_link_speed = rte_le_to_cpu_16(resp->auto_link_speed); link_info->preemphasis = rte_le_to_cpu_32(resp->preemphasis); + link_info->force_link_speed = rte_le_to_cpu_16(resp->force_link_speed); link_info->phy_ver[0] = resp->phy_maj; link_info->phy_ver[1] = resp->phy_min; link_info->phy_ver[2] = resp->phy_bld; HWRM_UNLOCK(); + RTE_LOG(DEBUG, PMD, "Link Speed %d\n", link_info->link_speed); + RTE_LOG(DEBUG, PMD, "Auto Mode %d\n", link_info->auto_mode); + RTE_LOG(DEBUG, PMD, "Support Speeds %x\n", link_info->support_speeds); + RTE_LOG(DEBUG, PMD, "Auto Link Speed %x\n", link_info->auto_link_speed); + RTE_LOG(DEBUG, PMD, "Auto Link Speed Mask %x\n", + link_info->auto_link_speed_mask); + RTE_LOG(DEBUG, PMD, "Forced Link Speed %x\n", + link_info->force_link_speed); + return rc; } @@ -2124,7 +2135,9 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up) autoneg = bnxt_check_eth_link_autoneg(dev_conf->link_speeds); speed = bnxt_parse_eth_link_speed(dev_conf->link_speeds); link_req.phy_flags = HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESET_PHY; - if (autoneg == 1) { + /* Autoneg can be done only when the FW allows */ + if (autoneg == 1 && !(bp->link_info.auto_link_speed || + bp->link_info.force_link_speed)) { link_req.phy_flags |= HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESTART_AUTONEG; link_req.auto_link_speed_mask = @@ -2142,7 +2155,13 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up) } link_req.phy_flags |= HWRM_PORT_PHY_CFG_INPUT_FLAGS_FORCE; - link_req.link_speed = speed; + /* If user wants a particular speed try that first. */ + if (speed) + link_req.link_speed = speed; + else if (bp->link_info.force_link_speed) + link_req.link_speed = bp->link_info.force_link_speed; + else + link_req.link_speed = bp->link_info.auto_link_speed; } link_req.duplex = bnxt_parse_eth_link_duplex(dev_conf->link_speeds); link_req.auto_pause = bp->link_info.auto_pause; -- 2.14.3