From 0deab659a615a480a68ae17ad36a0f3c37c62e01 Mon Sep 17 00:00:00 2001 From: Anirudh Venkataramanan Date: Thu, 28 Feb 2019 15:24:25 -0800 Subject: [PATCH] ice: Add code for DCB initialization part 4/4 When the firmware doesn't support LLDP or DCBX, the driver should switch to "software LLDP mode". This patch adds support for the same. Signed-off-by: Anirudh Venkataramanan Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_dcb.h | 1 + drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 82 +++++++++++++++++++++++++++- 2 files changed, 81 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.h b/drivers/net/ethernet/intel/ice/ice_dcb.h index dd0050162973..25d9b6f07ae0 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb.h +++ b/drivers/net/ethernet/intel/ice/ice_dcb.h @@ -6,6 +6,7 @@ #include "ice_type.h" +#define ICE_DCBX_STATUS_NOT_STARTED 0 #define ICE_DCBX_STATUS_IN_PROGRESS 1 #define ICE_DCBX_STATUS_DONE 2 #define ICE_DCBX_STATUS_DIS 7 diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c index 210487a0671d..c52bd5bb37c2 100644 --- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c @@ -187,6 +187,50 @@ static int ice_dcb_init_cfg(struct ice_pf *pf) } /** + * ice_dcb_sw_default_config - Apply a default DCB config + * @pf: pf to apply config to + */ +static int ice_dcb_sw_dflt_cfg(struct ice_pf *pf) +{ + struct ice_aqc_port_ets_elem buf = { 0 }; + struct ice_dcbx_cfg *dcbcfg; + struct ice_port_info *pi; + struct ice_hw *hw; + int ret; + + hw = &pf->hw; + pi = hw->port_info; + dcbcfg = devm_kzalloc(&pf->pdev->dev, sizeof(*dcbcfg), GFP_KERNEL); + + memset(dcbcfg, 0, sizeof(*dcbcfg)); + memset(&pi->local_dcbx_cfg, 0, sizeof(*dcbcfg)); + + dcbcfg->etscfg.willing = 1; + dcbcfg->etscfg.maxtcs = 8; + dcbcfg->etscfg.tcbwtable[0] = 100; + dcbcfg->etscfg.tsatable[0] = ICE_IEEE_TSA_ETS; + + memcpy(&dcbcfg->etsrec, &dcbcfg->etscfg, + sizeof(dcbcfg->etsrec)); + dcbcfg->etsrec.willing = 0; + + dcbcfg->pfc.willing = 1; + dcbcfg->pfc.pfccap = IEEE_8021QAZ_MAX_TCS; + + dcbcfg->numapps = 1; + dcbcfg->app[0].selector = ICE_APP_SEL_ETHTYPE; + dcbcfg->app[0].priority = 3; + dcbcfg->app[0].prot_id = ICE_APP_PROT_ID_FCOE; + + ret = ice_pf_dcb_cfg(pf, dcbcfg); + devm_kfree(&pf->pdev->dev, dcbcfg); + if (ret) + return ret; + + return ice_query_port_ets(pi, &buf, sizeof(buf), NULL); +} + +/** * ice_init_pf_dcb - initialize DCB for a PF * @pf: pf to initiialize DCB for */ @@ -195,6 +239,7 @@ int ice_init_pf_dcb(struct ice_pf *pf) struct device *dev = &pf->pdev->dev; struct ice_port_info *port_info; struct ice_hw *hw = &pf->hw; + int sw_default = 0; int err; port_info = hw->port_info; @@ -223,8 +268,41 @@ int ice_init_pf_dcb(struct ice_pf *pf) } err = ice_init_dcb(hw); - if (err) - goto dcb_init_err; + if (err) { + /* FW LLDP not in usable state, default to SW DCBx/LLDP */ + dev_info(&pf->pdev->dev, "FW LLDP not in usable state\n"); + hw->port_info->dcbx_status = ICE_DCBX_STATUS_NOT_STARTED; + hw->port_info->is_sw_lldp = true; + } + + if (port_info->dcbx_status == ICE_DCBX_STATUS_DIS) + dev_info(&pf->pdev->dev, "DCBX disabled\n"); + + /* LLDP disabled in FW */ + if (port_info->is_sw_lldp) { + sw_default = 1; + dev_info(&pf->pdev->dev, "DCBx/LLDP in SW mode.\n"); + } + + if (port_info->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) { + sw_default = 1; + dev_info(&pf->pdev->dev, "DCBX not started\n"); + } + + if (sw_default) { + err = ice_dcb_sw_dflt_cfg(pf); + if (err) { + dev_err(&pf->pdev->dev, + "Failed to set local DCB config %d\n", err); + err = -EIO; + goto dcb_init_err; + } + + pf->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE; + set_bit(ICE_FLAG_DCB_CAPABLE, pf->flags); + set_bit(ICE_FLAG_DCB_ENA, pf->flags); + return 0; + } /* DCBX in FW and LLDP enabled in FW */ pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED | DCB_CAP_DCBX_VER_IEEE; -- 2.11.0