From patchwork Mon Oct 9 22:26:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arkadiusz Kubalewski X-Patchwork-Id: 13414591 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 83D2D450E9 for ; Mon, 9 Oct 2023 22:29:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nj0Km7K+" Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D968E9E; Mon, 9 Oct 2023 15:29:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696890580; x=1728426580; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=be4eUH2Ldwl+vuGHWCvFOPxAQkfJ89MRK98Bu9/bNN8=; b=nj0Km7K+YJ8Wrgje36cuLUIZ5FZDTYgjrROZQyuRNR8xtVBbqKvZKFl9 D/pIBlN7O1leJgR9P+P2dtOMywWcUY3sHRt0t2+BNCKiC2IZ7MSaHSHSq NB4nop3yzE2SxeJOLqB5LtmG9xhTxRw4Ys761u2oOstRoENFfxc1SvdPL 5nYbin8KfItU11Tg+Hb7cfDENzKPIf5tsqkMHHl4VRFH2xt505VaFqLQa 9SW5cl3a1kmDw2z163S7QmBSgRIm8uRSyA1ZWyCvsNUw/aHggixoVhYL6 cTWSLfAOZrb+DcnrixHnGP+qXPdyqZNj87f7IvOHo83NICIscOrLbPqdo Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="2849426" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="2849426" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2023 15:29:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10858"; a="843876596" X-IronPort-AV: E=Sophos;i="6.03,211,1694761200"; d="scan'208";a="843876596" Received: from amlin-018-114.igk.intel.com ([10.102.18.114]) by FMSMGA003.fm.intel.com with ESMTP; 09 Oct 2023 15:28:59 -0700 From: Arkadiusz Kubalewski To: netdev@vger.kernel.org Cc: vadim.fedorenko@linux.dev, jiri@resnulli.us, corbet@lwn.net, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, linux-doc@vger.kernel.org, intel-wired-lan@lists.osuosl.org, Arkadiusz Kubalewski Subject: [PATCH net-next v4 4/5] ice: dpll: implement phase related callbacks Date: Tue, 10 Oct 2023 00:26:15 +0200 Message-Id: <20231009222616.12163-5-arkadiusz.kubalewski@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20231009222616.12163-1-arkadiusz.kubalewski@intel.com> References: <20231009222616.12163-1-arkadiusz.kubalewski@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE, SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Implement new callback ops related to measurement and adjustment of signal phase for pin-dpll in ice driver. Signed-off-by: Arkadiusz Kubalewski --- drivers/net/ethernet/intel/ice/ice_dpll.c | 220 +++++++++++++++++++++- drivers/net/ethernet/intel/ice/ice_dpll.h | 10 +- 2 files changed, 226 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.c b/drivers/net/ethernet/intel/ice/ice_dpll.c index 1faee9cb944d..835c419ccc74 100644 --- a/drivers/net/ethernet/intel/ice/ice_dpll.c +++ b/drivers/net/ethernet/intel/ice/ice_dpll.c @@ -878,6 +878,199 @@ ice_dpll_output_direction(const struct dpll_pin *pin, void *pin_priv, return 0; } +/** + * ice_dpll_pin_phase_adjust_get - callback for get pin phase adjust value + * @pin: pointer to a pin + * @pin_priv: private data pointer passed on pin registration + * @dpll: registered dpll pointer + * @dpll_priv: private data pointer passed on dpll registration + * @phase_adjust: on success holds pin phase_adjust value + * @extack: error reporting + * + * Dpll subsystem callback. Handler for getting phase adjust value of a pin. + * + * Context: Acquires pf->dplls.lock + * Return: + * * 0 - success + * * negative - error + */ +static int +ice_dpll_pin_phase_adjust_get(const struct dpll_pin *pin, void *pin_priv, + const struct dpll_device *dpll, void *dpll_priv, + s32 *phase_adjust, + struct netlink_ext_ack *extack) +{ + struct ice_dpll_pin *p = pin_priv; + struct ice_pf *pf = p->pf; + + mutex_lock(&pf->dplls.lock); + *phase_adjust = p->phase_adjust; + mutex_unlock(&pf->dplls.lock); + + return 0; +} + +/** + * ice_dpll_pin_phase_adjust_set - helper for setting a pin phase adjust value + * @pin: pointer to a pin + * @pin_priv: private data pointer passed on pin registration + * @dpll: registered dpll pointer + * @dpll_priv: private data pointer passed on dpll registration + * @phase_adjust: phase_adjust to be set + * @extack: error reporting + * @type: type of a pin + * + * Helper for dpll subsystem callback. Handler for setting phase adjust value + * of a pin. + * + * Context: Acquires pf->dplls.lock + * Return: + * * 0 - success + * * negative - error + */ +static int +ice_dpll_pin_phase_adjust_set(const struct dpll_pin *pin, void *pin_priv, + const struct dpll_device *dpll, void *dpll_priv, + s32 phase_adjust, + struct netlink_ext_ack *extack, + enum ice_dpll_pin_type type) +{ + struct ice_dpll_pin *p = pin_priv; + struct ice_dpll *d = dpll_priv; + struct ice_pf *pf = d->pf; + u8 flag, flags_en = 0; + int ret; + + mutex_lock(&pf->dplls.lock); + switch (type) { + case ICE_DPLL_PIN_TYPE_INPUT: + flag = ICE_AQC_SET_CGU_IN_CFG_FLG1_UPDATE_DELAY; + if (p->flags[0] & ICE_AQC_GET_CGU_IN_CFG_FLG2_ESYNC_EN) + flags_en |= ICE_AQC_SET_CGU_IN_CFG_FLG2_ESYNC_EN; + if (p->flags[0] & ICE_AQC_GET_CGU_IN_CFG_FLG2_INPUT_EN) + flags_en |= ICE_AQC_SET_CGU_IN_CFG_FLG2_INPUT_EN; + ret = ice_aq_set_input_pin_cfg(&pf->hw, p->idx, flag, flags_en, + 0, phase_adjust); + break; + case ICE_DPLL_PIN_TYPE_OUTPUT: + flag = ICE_AQC_SET_CGU_OUT_CFG_UPDATE_PHASE; + if (p->flags[0] & ICE_AQC_GET_CGU_OUT_CFG_OUT_EN) + flag |= ICE_AQC_SET_CGU_OUT_CFG_OUT_EN; + if (p->flags[0] & ICE_AQC_GET_CGU_OUT_CFG_ESYNC_EN) + flag |= ICE_AQC_SET_CGU_OUT_CFG_ESYNC_EN; + ret = ice_aq_set_output_pin_cfg(&pf->hw, p->idx, flag, 0, 0, + phase_adjust); + break; + default: + ret = -EINVAL; + } + if (!ret) + p->phase_adjust = phase_adjust; + mutex_unlock(&pf->dplls.lock); + if (ret) + NL_SET_ERR_MSG_FMT(extack, + "err:%d %s failed to set pin phase_adjust:%d for pin:%u on dpll:%u\n", + ret, + ice_aq_str(pf->hw.adminq.sq_last_status), + phase_adjust, p->idx, d->dpll_idx); + + return ret; +} + +/** + * ice_dpll_input_phase_adjust_set - callback for set input pin phase adjust + * @pin: pointer to a pin + * @pin_priv: private data pointer passed on pin registration + * @dpll: registered dpll pointer + * @dpll_priv: private data pointer passed on dpll registration + * @phase_adjust: phase_adjust to be set + * @extack: error reporting + * + * Dpll subsystem callback. Wraps a handler for setting phase adjust on input + * pin. + * + * Context: Calls a function which acquires pf->dplls.lock + * Return: + * * 0 - success + * * negative - error + */ +static int +ice_dpll_input_phase_adjust_set(const struct dpll_pin *pin, void *pin_priv, + const struct dpll_device *dpll, void *dpll_priv, + s32 phase_adjust, + struct netlink_ext_ack *extack) +{ + return ice_dpll_pin_phase_adjust_set(pin, pin_priv, dpll, dpll_priv, + phase_adjust, extack, + ICE_DPLL_PIN_TYPE_INPUT); +} + +/** + * ice_dpll_output_phase_adjust_set - callback for set output pin phase adjust + * @pin: pointer to a pin + * @pin_priv: private data pointer passed on pin registration + * @dpll: registered dpll pointer + * @dpll_priv: private data pointer passed on dpll registration + * @phase_adjust: phase_adjust to be set + * @extack: error reporting + * + * Dpll subsystem callback. Wraps a handler for setting phase adjust on output + * pin. + * + * Context: Calls a function which acquires pf->dplls.lock + * Return: + * * 0 - success + * * negative - error + */ +static int +ice_dpll_output_phase_adjust_set(const struct dpll_pin *pin, void *pin_priv, + const struct dpll_device *dpll, void *dpll_priv, + s32 phase_adjust, + struct netlink_ext_ack *extack) +{ + return ice_dpll_pin_phase_adjust_set(pin, pin_priv, dpll, dpll_priv, + phase_adjust, extack, + ICE_DPLL_PIN_TYPE_OUTPUT); +} + +#define ICE_DPLL_PHASE_OFFSET_DIVIDER 100 +#define ICE_DPLL_PHASE_OFFSET_FACTOR \ + (DPLL_PHASE_OFFSET_DIVIDER / ICE_DPLL_PHASE_OFFSET_DIVIDER) +/** + * ice_dpll_phase_offset_get - callback for get dpll phase shift value + * @pin: pointer to a pin + * @pin_priv: private data pointer passed on pin registration + * @dpll: registered dpll pointer + * @dpll_priv: private data pointer passed on dpll registration + * @phase_offset: on success holds pin phase_offset value + * @extack: error reporting + * + * Dpll subsystem callback. Handler for getting phase shift value between + * dpll's input and output. + * + * Context: Acquires pf->dplls.lock + * Return: + * * 0 - success + * * negative - error + */ +static int +ice_dpll_phase_offset_get(const struct dpll_pin *pin, void *pin_priv, + const struct dpll_device *dpll, void *dpll_priv, + s64 *phase_offset, struct netlink_ext_ack *extack) +{ + struct ice_dpll *d = dpll_priv; + struct ice_pf *pf = d->pf; + + mutex_lock(&pf->dplls.lock); + if (d->active_input == pin) + *phase_offset = d->phase_offset * ICE_DPLL_PHASE_OFFSET_FACTOR; + else + *phase_offset = 0; + mutex_unlock(&pf->dplls.lock); + + return 0; +} + /** * ice_dpll_rclk_state_on_pin_set - set a state on rclk pin * @pin: pointer to a pin @@ -993,6 +1186,9 @@ static const struct dpll_pin_ops ice_dpll_input_ops = { .prio_get = ice_dpll_input_prio_get, .prio_set = ice_dpll_input_prio_set, .direction_get = ice_dpll_input_direction, + .phase_adjust_get = ice_dpll_pin_phase_adjust_get, + .phase_adjust_set = ice_dpll_input_phase_adjust_set, + .phase_offset_get = ice_dpll_phase_offset_get, }; static const struct dpll_pin_ops ice_dpll_output_ops = { @@ -1001,6 +1197,8 @@ static const struct dpll_pin_ops ice_dpll_output_ops = { .state_on_dpll_get = ice_dpll_output_state_get, .state_on_dpll_set = ice_dpll_output_state_set, .direction_get = ice_dpll_output_direction, + .phase_adjust_get = ice_dpll_pin_phase_adjust_get, + .phase_adjust_set = ice_dpll_output_phase_adjust_set, }; static const struct dpll_device_ops ice_dpll_ops = { @@ -1031,6 +1229,8 @@ static u64 ice_generate_clock_id(struct ice_pf *pf) */ static void ice_dpll_notify_changes(struct ice_dpll *d) { + bool pin_notified = false; + if (d->prev_dpll_state != d->dpll_state) { d->prev_dpll_state = d->dpll_state; dpll_device_change_ntf(d->dpll); @@ -1039,7 +1239,14 @@ static void ice_dpll_notify_changes(struct ice_dpll *d) if (d->prev_input) dpll_pin_change_ntf(d->prev_input); d->prev_input = d->active_input; - if (d->active_input) + if (d->active_input) { + dpll_pin_change_ntf(d->active_input); + pin_notified = true; + } + } + if (d->prev_phase_offset != d->phase_offset) { + d->prev_phase_offset = d->phase_offset; + if (!pin_notified && d->active_input) dpll_pin_change_ntf(d->active_input); } } @@ -1065,7 +1272,7 @@ ice_dpll_update_state(struct ice_pf *pf, struct ice_dpll *d, bool init) ret = ice_get_cgu_state(&pf->hw, d->dpll_idx, d->prev_dpll_state, &d->input_idx, &d->ref_state, &d->eec_mode, - &d->phase_shift, &d->dpll_state); + &d->phase_offset, &d->dpll_state); dev_dbg(ice_pf_to_dev(pf), "update dpll=%d, prev_src_idx:%u, src_idx:%u, state:%d, prev:%d mode:%d\n", @@ -1656,6 +1863,15 @@ ice_dpll_init_info_direct_pins(struct ice_pf *pf, return ret; pins[i].prop.capabilities |= DPLL_PIN_CAPABILITIES_PRIORITY_CAN_CHANGE; + pins[i].prop.phase_range.min = + pf->dplls.input_phase_adj_max; + pins[i].prop.phase_range.max = + -pf->dplls.input_phase_adj_max; + } else { + pins[i].prop.phase_range.min = + pf->dplls.output_phase_adj_max; + pins[i].prop.phase_range.max = + -pf->dplls.output_phase_adj_max; } pins[i].prop.capabilities |= DPLL_PIN_CAPABILITIES_STATE_CAN_CHANGE; diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.h b/drivers/net/ethernet/intel/ice/ice_dpll.h index 2dfe764b81e1..bb32b6d88373 100644 --- a/drivers/net/ethernet/intel/ice/ice_dpll.h +++ b/drivers/net/ethernet/intel/ice/ice_dpll.h @@ -19,6 +19,7 @@ * @state: state of a pin * @prop: pin properties * @freq: current frequency of a pin + * @phase_adjust: current phase adjust value */ struct ice_dpll_pin { struct dpll_pin *pin; @@ -30,6 +31,7 @@ struct ice_dpll_pin { u8 state[ICE_DPLL_RCLK_NUM_MAX]; struct dpll_pin_properties prop; u32 freq; + s32 phase_adjust; }; /** ice_dpll - store info required for DPLL control @@ -40,7 +42,8 @@ struct ice_dpll_pin { * @prev_input_idx: previously selected input index * @ref_state: state of dpll reference signals * @eec_mode: eec_mode dpll is configured for - * @phase_shift: phase shift delay of a dpll + * @phase_offset: phase offset of active pin vs dpll signal + * @prev_phase_offset: previous phase offset of active pin vs dpll signal * @input_prio: priorities of each input * @dpll_state: current dpll sync state * @prev_dpll_state: last dpll sync state @@ -55,7 +58,8 @@ struct ice_dpll { u8 prev_input_idx; u8 ref_state; u8 eec_mode; - s64 phase_shift; + s64 phase_offset; + s64 prev_phase_offset; u8 *input_prio; enum dpll_lock_status dpll_state; enum dpll_lock_status prev_dpll_state; @@ -78,6 +82,8 @@ struct ice_dpll { * @cgu_state_acq_err_num: number of errors returned during periodic work * @base_rclk_idx: idx of first pin used for clock revocery pins * @clock_id: clock_id of dplls + * @input_phase_adj_max: max phase adjust value for an input pins + * @output_phase_adj_max: max phase adjust value for an output pins */ struct ice_dplls { struct kthread_worker *kworker;