From patchwork Thu Aug 29 11:37:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karol Kolacinski X-Patchwork-Id: 13783055 X-Patchwork-Delegate: kuba@kernel.org Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 38F5F1946A4 for ; Thu, 29 Aug 2024 11:42:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724931734; cv=none; b=lmm9uXC5T6WgV1xjU9eX7Wchw4+6vH23rCmBNtkit24FQY5wFRnvjoB0hj23O6JQlnEj1yx+GDxHyflgyuszWC5sM9WO1Ho5CG0/n+QjT1t6cEaQdybXnp6XPV4KfZIrvYG/Mbo77LeqRb/tyPduogrfiFJ19uyT5v6GDQsTx0g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724931734; c=relaxed/simple; bh=CicT6FrMOCHdpwngb+r7RHwBgfrvHBsEYrym27OdEto=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AuBiuV6z953Dqxo5bBSZbbCWDVikf2CdkQ0TFVZ5WGAcw03YNpbX9yjn+Pl3YCDLj0cR8ZwXrOyIMXJowD7Cc9ulJxvSIwFB3sqB0OnLEwdBskC26ItvCUG64TcNq4ywGmTJ2oG5V2tc1vN69H4wpkLziwrMY8x+X0EgGrMqMWE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=BuFGLNUI; arc=none smtp.client-ip=192.198.163.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="BuFGLNUI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1724931733; x=1756467733; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CicT6FrMOCHdpwngb+r7RHwBgfrvHBsEYrym27OdEto=; b=BuFGLNUIhmhOXyzDe6B1oUt//mrJwZvDgmnWyZ/oO8jbO7Wmw66N5u7Z sNCKrrGKBblFj09SkQn8kf23SuikgFvhidYh6e1dvo/Z2DPIVurrwomdD DgazKR36iu8T5sx+YWphlfIN7aCnBqAoZd7XaRnrXvz7H8azPFU6+RqVj 6FUGDYRHFcpgu1GpRCinQOHUdwD/xK08IasJis0BQ5C3RJzc8tPOoWD80 vOE0ElUY20RRXsOG2IcWuvIKo0fl3G7rQlQNIAujVxONVtp8KoDS4IN+p zVYU8o0bMpX2cpEZZnseS7B2AErmKNuRxWSo8CDVqgRFA9V1jw+feu61O w==; X-CSE-ConnectionGUID: N7APfty1Tky0SNYGZ4FrBw== X-CSE-MsgGUID: naqutBW7TViE36RmyTM1qg== X-IronPort-AV: E=McAfee;i="6700,10204,11178"; a="23092336" X-IronPort-AV: E=Sophos;i="6.10,185,1719903600"; d="scan'208";a="23092336" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Aug 2024 04:42:13 -0700 X-CSE-ConnectionGUID: XVAbA+juRBy50HKtfQVhGA== X-CSE-MsgGUID: S962/Pl6RX6xXPGG/un3fA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,185,1719903600"; d="scan'208";a="64045411" Received: from kkolacin-desk1.igk.intel.com ([10.217.160.108]) by orviesa007.jf.intel.com with ESMTP; 29 Aug 2024 04:42:11 -0700 From: Karol Kolacinski To: intel-wired-lan@lists.osuosl.org Cc: netdev@vger.kernel.org, anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, Karol Kolacinski Subject: [PATCH v9 iwl-next 4/7] ice: Process TSYN IRQ in a separate function Date: Thu, 29 Aug 2024 13:37:40 +0200 Message-ID: <20240829114201.1030938-13-karol.kolacinski@intel.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240829114201.1030938-9-karol.kolacinski@intel.com> References: <20240829114201.1030938-9-karol.kolacinski@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Simplify TSYN IRQ processing by moving it to a separate function and having appropriate behavior per PHY model, instead of multiple conditions not related to HW, but to specific timestamping modes. When PTP is not enabled in the kernel, don't process timestamps and return IRQ_HANDLED. Reviewed-by: Przemek Kitszel Signed-off-by: Karol Kolacinski --- V7 -> V8: Moved E830 timestamp handling to "ice: Implement PTP support for E830 devices" drivers/net/ethernet/intel/ice/ice_main.c | 18 +-------- drivers/net/ethernet/intel/ice/ice_ptp.c | 49 +++++++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_ptp.h | 6 +++ 3 files changed, 57 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c index c374a944af26..fbb2aa8d3188 100644 --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -3276,22 +3276,8 @@ static irqreturn_t ice_misc_intr(int __always_unused irq, void *data) if (oicr & PFINT_OICR_TSYN_TX_M) { ena_mask &= ~PFINT_OICR_TSYN_TX_M; - if (ice_pf_state_is_nominal(pf) && - pf->hw.dev_caps.ts_dev_info.ts_ll_int_read) { - struct ice_ptp_tx *tx = &pf->ptp.port.tx; - unsigned long flags; - u8 idx; - - spin_lock_irqsave(&tx->lock, flags); - idx = find_next_bit_wrap(tx->in_use, tx->len, - tx->last_ll_ts_idx_read + 1); - if (idx != tx->len) - ice_ptp_req_tx_single_tstamp(tx, idx); - spin_unlock_irqrestore(&tx->lock, flags); - } else if (ice_ptp_pf_handles_tx_interrupt(pf)) { - set_bit(ICE_MISC_THREAD_TX_TSTAMP, pf->misc_thread); - ret = IRQ_WAKE_THREAD; - } + + ret = ice_ptp_ts_irq(pf); } if (oicr & PFINT_OICR_TSYN_EVNT_M) { diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index 64bae4321588..08466b136614 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -2756,6 +2756,55 @@ enum ice_tx_tstamp_work ice_ptp_process_ts(struct ice_pf *pf) } } +/** + * ice_ptp_ts_irq - Process the PTP Tx timestamps in IRQ context + * @pf: Board private structure + * + * Return: IRQ_WAKE_THREAD if Tx timestamp read has to be handled in the bottom + * half of the interrupt and IRQ_HANDLED otherwise. + */ +irqreturn_t ice_ptp_ts_irq(struct ice_pf *pf) +{ + struct ice_hw *hw = &pf->hw; + + switch (hw->mac_type) { + case ICE_MAC_E810: + /* E810 capable of low latency timestamping with interrupt can + * request a single timestamp in the top half and wait for + * a second LL TS interrupt from the FW when it's ready. + */ + if (hw->dev_caps.ts_dev_info.ts_ll_int_read) { + struct ice_ptp_tx *tx = &pf->ptp.port.tx; + u8 idx; + + if (!ice_pf_state_is_nominal(pf)) + return IRQ_HANDLED; + + spin_lock(&tx->lock); + idx = find_next_bit_wrap(tx->in_use, tx->len, + tx->last_ll_ts_idx_read + 1); + if (idx != tx->len) + ice_ptp_req_tx_single_tstamp(tx, idx); + spin_unlock(&tx->lock); + + return IRQ_HANDLED; + } + fallthrough; /* non-LL_TS E810 */ + case ICE_MAC_GENERIC: + case ICE_MAC_GENERIC_3K_E825: + /* All other devices process timestamps in the bottom half due + * to sleeping or polling. + */ + if (!ice_ptp_pf_handles_tx_interrupt(pf)) + return IRQ_HANDLED; + + set_bit(ICE_MISC_THREAD_TX_TSTAMP, pf->misc_thread); + return IRQ_WAKE_THREAD; + default: + return IRQ_HANDLED; + } +} + /** * ice_ptp_maybe_trigger_tx_interrupt - Trigger Tx timstamp interrupt * @pf: Board private structure diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.h b/drivers/net/ethernet/intel/ice/ice_ptp.h index 824e73b677a4..acee46ad793a 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.h +++ b/drivers/net/ethernet/intel/ice/ice_ptp.h @@ -302,6 +302,7 @@ s8 ice_ptp_request_ts(struct ice_ptp_tx *tx, struct sk_buff *skb); void ice_ptp_req_tx_single_tstamp(struct ice_ptp_tx *tx, u8 idx); void ice_ptp_complete_tx_single_tstamp(struct ice_ptp_tx *tx); enum ice_tx_tstamp_work ice_ptp_process_ts(struct ice_pf *pf); +irqreturn_t ice_ptp_ts_irq(struct ice_pf *pf); u64 ice_ptp_get_rx_hwts(const union ice_32b_rx_flex_desc *rx_desc, const struct ice_pkt_ctx *pkt_ctx); @@ -340,6 +341,11 @@ static inline bool ice_ptp_process_ts(struct ice_pf *pf) return true; } +static inline irqreturn_t ice_ptp_ts_irq(struct ice_pf *pf) +{ + return IRQ_HANDLED; +} + static inline u64 ice_ptp_get_rx_hwts(const union ice_32b_rx_flex_desc *rx_desc, const struct ice_pkt_ctx *pkt_ctx)