From: Yaniv Rosner Date: Wed, 4 Apr 2012 01:28:54 +0000 (+0000) Subject: bnx2x: PFC fix X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=27d9129f5ae830cc031a898e0c220e1cdda69b34;p=~shefty%2Frdma-dev.git bnx2x: PFC fix Fix a problem in which PFC frames are not honored, due to incorrect link attributes synchronization following PMF migration, and verify PFC XON is not stuck from previous link change. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index efa557b76ac..7e2ebbad758 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -1371,7 +1371,14 @@ static void bnx2x_update_pfc_xmac(struct link_params *params, pfc1_val |= XMAC_PFC_CTRL_HI_REG_PFC_REFRESH_EN | XMAC_PFC_CTRL_HI_REG_PFC_STATS_EN | XMAC_PFC_CTRL_HI_REG_RX_PFC_EN | - XMAC_PFC_CTRL_HI_REG_TX_PFC_EN; + XMAC_PFC_CTRL_HI_REG_TX_PFC_EN | + XMAC_PFC_CTRL_HI_REG_FORCE_PFC_XON; + /* Write pause and PFC registers */ + REG_WR(bp, xmac_base + XMAC_REG_PAUSE_CTRL, pause_val); + REG_WR(bp, xmac_base + XMAC_REG_PFC_CTRL, pfc0_val); + REG_WR(bp, xmac_base + XMAC_REG_PFC_CTRL_HI, pfc1_val); + pfc1_val &= ~XMAC_PFC_CTRL_HI_REG_FORCE_PFC_XON; + } /* Write pause and PFC registers */ @@ -6843,6 +6850,12 @@ int bnx2x_link_update(struct link_params *params, struct link_vars *vars) SINGLE_MEDIA_DIRECT(params)) && (phy_vars[active_external_phy].fault_detected == 0)); + /* Update the PFC configuration in case it was changed */ + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) + vars->link_status |= LINK_STATUS_PFC_ENABLED; + else + vars->link_status &= ~LINK_STATUS_PFC_ENABLED; + if (vars->link_up) rc = bnx2x_update_link_up(params, vars, link_10g_plus); else @@ -12049,6 +12062,9 @@ int bnx2x_phy_init(struct link_params *params, struct link_vars *vars) bnx2x_emac_init(params, vars); + if (params->feature_config_flags & FEATURE_CONFIG_PFC_ENABLED) + vars->link_status |= LINK_STATUS_PFC_ENABLED; + if (params->num_phys == 0) { DP(NETIF_MSG_LINK, "No phy found for initialization !!\n"); return -EINVAL; diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h index ab0a250f95f..ecc7fa6a6ca 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h @@ -5354,6 +5354,7 @@ #define XMAC_CTRL_REG_TX_EN (0x1<<0) #define XMAC_PAUSE_CTRL_REG_RX_PAUSE_EN (0x1<<18) #define XMAC_PAUSE_CTRL_REG_TX_PAUSE_EN (0x1<<17) +#define XMAC_PFC_CTRL_HI_REG_FORCE_PFC_XON (0x1<<1) #define XMAC_PFC_CTRL_HI_REG_PFC_REFRESH_EN (0x1<<0) #define XMAC_PFC_CTRL_HI_REG_PFC_STATS_EN (0x1<<3) #define XMAC_PFC_CTRL_HI_REG_RX_PFC_EN (0x1<<4)