From: Vladimir Medvedkin <[email protected]> Add the following utility functions related to DCB:
* Get number of Congestion Domains per port * Resolve Traffic Class(TC) by 802.1p VLAN User Priority(UP) * Get absolute index of the Congestion Domain by TC Signed-off-by: Vladimir Medvedkin <[email protected]> Signed-off-by: Anatoly Burakov <[email protected]> --- drivers/net/intel/ice/base/ice_common.c | 48 +++++++++++++++++++++++++ drivers/net/intel/ice/base/ice_common.h | 8 +++++ 2 files changed, 56 insertions(+) diff --git a/drivers/net/intel/ice/base/ice_common.c b/drivers/net/intel/ice/base/ice_common.c index d9520097bd..63c72f77a5 100644 --- a/drivers/net/intel/ice/base/ice_common.c +++ b/drivers/net/intel/ice/base/ice_common.c @@ -6594,3 +6594,51 @@ bool ice_is_fw_auto_drop_supported(struct ice_hw *hw) return true; return false; } + +/** + * ice_get_port_max_cgd + * @hw: pointer to the hardware structure + * + * Returns the number of congestion domains (cgds) for a port + */ +enum ice_cgd_per_port +ice_get_port_max_cgd(struct ice_hw *hw) +{ +#define ICE_8_PORTS_LINK_TOPO 0x2 + u32 link_topo = LE32_TO_CPU(rd32(hw, GLGEN_MAC_LINK_TOPO)) & + GLGEN_MAC_LINK_TOPO_LINK_TOPO_M; + + return (link_topo == ICE_8_PORTS_LINK_TOPO) ? ICE_4_CGD_PER_PORT : ICE_8_CGD_PER_PORT; +} + +/** + * ice_get_tc_by_priority + * @hw: pointer to the hardware structure + * @prio: VLAN PCP + * + * Returns the index of Traffic Class(TC) associated with the User Priority + */ +u8 +ice_get_tc_by_priority(struct ice_hw *hw, u8 prio) +{ + struct ice_port_info *port_info = hw->port_info; + struct ice_qos_cfg *qos_cfg = &port_info->qos_cfg; + struct ice_dcbx_cfg *local_dcb_conf = &qos_cfg->local_dcbx_cfg; + + prio &= (ICE_MAX_TRAFFIC_CLASS - 1); + + return local_dcb_conf->etscfg.prio_table[prio]; +} + +/** + * ice_get_cgd_idx + * @hw: pointer to the hardware structure + * @tc: index of Traffic Class + * + * Returns the absolute index of the congestion domain by its TC + */ +int +ice_get_cgd_idx(struct ice_hw *hw, u8 tc) +{ + return hw->port_info->lport * ice_get_port_max_cgd(hw) + tc; +} diff --git a/drivers/net/intel/ice/base/ice_common.h b/drivers/net/intel/ice/base/ice_common.h index f7e7ff5aaf..77ceccc6bd 100644 --- a/drivers/net/intel/ice/base/ice_common.h +++ b/drivers/net/intel/ice/base/ice_common.h @@ -25,6 +25,11 @@ enum ice_fw_modes { ICE_FW_MODE_ROLLBACK }; +enum ice_cgd_per_port { + ICE_4_CGD_PER_PORT = 4, + ICE_8_CGD_PER_PORT = 8 +}; + int ice_init_fltr_mgmt_struct(struct ice_hw *hw); void ice_cleanup_fltr_mgmt_struct(struct ice_hw *hw); void ice_set_umac_shared(struct ice_hw *hw); @@ -335,4 +340,7 @@ ice_aq_write_i2c(struct ice_hw *hw, struct ice_aqc_link_topo_addr topo_addr, bool ice_fw_supports_report_dflt_cfg(struct ice_hw *hw); /* AQ API version for FW auto drop reports */ bool ice_is_fw_auto_drop_supported(struct ice_hw *hw); +enum ice_cgd_per_port ice_get_port_max_cgd(struct ice_hw *hw); +u8 ice_get_tc_by_priority(struct ice_hw *hw, u8 prio); +int ice_get_cgd_idx(struct ice_hw *hw, u8 tc); #endif /* _ICE_COMMON_H_ */ -- 2.47.3
