From patchwork Tue Jun 11 15:51:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leyi Rong X-Patchwork-Id: 54692 X-Patchwork-Delegate: qi.z.zhang@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id ED1841C567; Tue, 11 Jun 2019 17:54:58 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id AF15E1C4EF for ; Tue, 11 Jun 2019 17:54:18 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Jun 2019 08:54:18 -0700 X-ExtLoop1: 1 Received: from lrong-srv-03.sh.intel.com ([10.67.119.177]) by orsmga001.jf.intel.com with ESMTP; 11 Jun 2019 08:54:17 -0700 From: Leyi Rong To: qi.z.zhang@intel.com Cc: dev@dpdk.org, Leyi Rong , Jacob Keller , Paul M Stillwell Jr Date: Tue, 11 Jun 2019 23:51:48 +0800 Message-Id: <20190611155221.2703-34-leyi.rong@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190611155221.2703-1-leyi.rong@intel.com> References: <20190604054248.68510-1-leyi.rong@intel.com> <20190611155221.2703-1-leyi.rong@intel.com> Subject: [dpdk-dev] [PATCH v2 33/66] net/ice/base: track HW stat registers past rollover X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Modify ice_stat_update40 to use rd64 instead of two calls to rd32. Additionally, drop the now unnecessary hireg function parameter. Signed-off-by: Jacob Keller Signed-off-by: Paul M Stillwell Jr Signed-off-by: Leyi Rong --- drivers/net/ice/base/ice_common.c | 57 +++++++++++++++++++------------ drivers/net/ice/base/ice_common.h | 8 ++--- 2 files changed, 38 insertions(+), 27 deletions(-) diff --git a/drivers/net/ice/base/ice_common.c b/drivers/net/ice/base/ice_common.c index db3acc040..f9a5d43e6 100644 --- a/drivers/net/ice/base/ice_common.c +++ b/drivers/net/ice/base/ice_common.c @@ -4087,40 +4087,44 @@ void ice_replay_post(struct ice_hw *hw) /** * ice_stat_update40 - read 40 bit stat from the chip and update stat values * @hw: ptr to the hardware info - * @hireg: high 32 bit HW register to read from - * @loreg: low 32 bit HW register to read from + * @reg: offset of 64 bit HW register to read from * @prev_stat_loaded: bool to specify if previous stats are loaded * @prev_stat: ptr to previous loaded stat value * @cur_stat: ptr to current stat value */ void -ice_stat_update40(struct ice_hw *hw, u32 hireg, u32 loreg, - bool prev_stat_loaded, u64 *prev_stat, u64 *cur_stat) +ice_stat_update40(struct ice_hw *hw, u32 reg, bool prev_stat_loaded, + u64 *prev_stat, u64 *cur_stat) { - u64 new_data; - - new_data = rd32(hw, loreg); - new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32; + u64 new_data = rd64(hw, reg) & (BIT_ULL(40) - 1); /* device stats are not reset at PFR, they likely will not be zeroed - * when the driver starts. So save the first values read and use them as - * offsets to be subtracted from the raw values in order to report stats - * that count from zero. + * when the driver starts. Thus, save the value from the first read + * without adding to the statistic value so that we report stats which + * count up from zero. */ - if (!prev_stat_loaded) + if (!prev_stat_loaded) { *prev_stat = new_data; + return; + } + + /* Calculate the difference between the new and old values, and then + * add it to the software stat value. + */ if (new_data >= *prev_stat) - *cur_stat = new_data - *prev_stat; + *cur_stat += new_data - *prev_stat; else /* to manage the potential roll-over */ - *cur_stat = (new_data + BIT_ULL(40)) - *prev_stat; - *cur_stat &= 0xFFFFFFFFFFULL; + *cur_stat += (new_data + BIT_ULL(40)) - *prev_stat; + + /* Update the previously stored value to prepare for next read */ + *prev_stat = new_data; } /** * ice_stat_update32 - read 32 bit stat from the chip and update stat values * @hw: ptr to the hardware info - * @reg: HW register to read from + * @reg: offset of HW register to read from * @prev_stat_loaded: bool to specify if previous stats are loaded * @prev_stat: ptr to previous loaded stat value * @cur_stat: ptr to current stat value @@ -4134,17 +4138,26 @@ ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded, new_data = rd32(hw, reg); /* device stats are not reset at PFR, they likely will not be zeroed - * when the driver starts. So save the first values read and use them as - * offsets to be subtracted from the raw values in order to report stats - * that count from zero. + * when the driver starts. Thus, save the value from the first read + * without adding to the statistic value so that we report stats which + * count up from zero. */ - if (!prev_stat_loaded) + if (!prev_stat_loaded) { *prev_stat = new_data; + return; + } + + /* Calculate the difference between the new and old values, and then + * add it to the software stat value. + */ if (new_data >= *prev_stat) - *cur_stat = new_data - *prev_stat; + *cur_stat += new_data - *prev_stat; else /* to manage the potential roll-over */ - *cur_stat = (new_data + BIT_ULL(32)) - *prev_stat; + *cur_stat += (new_data + BIT_ULL(32)) - *prev_stat; + + /* Update the previously stored value to prepare for next read */ + *prev_stat = new_data; } /** diff --git a/drivers/net/ice/base/ice_common.h b/drivers/net/ice/base/ice_common.h index 2ea4a6e8e..32d0e90c3 100644 --- a/drivers/net/ice/base/ice_common.h +++ b/drivers/net/ice/base/ice_common.h @@ -6,7 +6,6 @@ #define _ICE_COMMON_H_ #include "ice_type.h" - #include "ice_flex_pipe.h" #include "ice_switch.h" #include "ice_fdir.h" @@ -34,8 +33,7 @@ ice_clean_rq_elem(struct ice_hw *hw, struct ice_ctl_q_info *cq, struct ice_rq_event_info *e, u16 *pending); enum ice_status ice_get_link_status(struct ice_port_info *pi, bool *link_up); -enum ice_status -ice_update_link_info(struct ice_port_info *pi); +enum ice_status ice_update_link_info(struct ice_port_info *pi); enum ice_status ice_acquire_res(struct ice_hw *hw, enum ice_aq_res_ids res, enum ice_aq_res_access_type access, u32 timeout); @@ -200,8 +198,8 @@ ice_cfg_tc_node_bw_alloc(struct ice_port_info *pi, u8 tc, enum ice_status ice_cfg_rl_burst_size(struct ice_hw *hw, u32 bytes); void ice_output_fw_log(struct ice_hw *hw, struct ice_aq_desc *desc, void *buf); void -ice_stat_update40(struct ice_hw *hw, u32 hireg, u32 loreg, - bool prev_stat_loaded, u64 *prev_stat, u64 *cur_stat); +ice_stat_update40(struct ice_hw *hw, u32 reg, bool prev_stat_loaded, + u64 *prev_stat, u64 *cur_stat); void ice_stat_update32(struct ice_hw *hw, u32 reg, bool prev_stat_loaded, u64 *prev_stat, u64 *cur_stat);