From patchwork Mon Mar 4 09:01:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Brandes, Shai" X-Patchwork-Id: 137860 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6830943B9B; Mon, 4 Mar 2024 10:05:21 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id A3C3042DFA; Mon, 4 Mar 2024 10:02:19 +0100 (CET) Received: from smtp-fw-2101.amazon.com (smtp-fw-2101.amazon.com [72.21.196.25]) by mails.dpdk.org (Postfix) with ESMTP id 73D1B40ED8 for ; Mon, 4 Mar 2024 10:02:12 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1709542932; x=1741078932; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=k7tSn94UG4o8pHcq8WdxIuSJH1RQ+upoyX4f7xPDkGs=; b=AtVei+zxcIBpD3ViQ9cRIhQdm0GjtJg13pP/bd0Uy6+LsjNprXWkVWHO ITNLNSA6DdnzuVKYN7gJo1WLnKtt5QTNEW+JihZQPEIsv5At2J4LU6oIB AAm58LXaIAVVO6OOBtSB5TclnzvWbntDknjrBTeUaOMYP1EtdLw6sYuWc w=; X-IronPort-AV: E=Sophos;i="6.06,203,1705363200"; d="scan'208";a="385227057" Received: from iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev) ([10.43.8.6]) by smtp-border-fw-2101.iad2.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Mar 2024 09:02:12 +0000 Received: from EX19MTAEUA002.ant.amazon.com [10.0.43.254:1112] by smtpin.naws.eu-west-1.prod.farcaster.email.amazon.dev [10.0.23.38:2525] with esmtp (Farcaster) id 29b28a27-3749-4b7f-b55d-bf49d75a01dd; Mon, 4 Mar 2024 09:02:10 +0000 (UTC) X-Farcaster-Flow-ID: 29b28a27-3749-4b7f-b55d-bf49d75a01dd Received: from EX19D007EUA002.ant.amazon.com (10.252.50.68) by EX19MTAEUA002.ant.amazon.com (10.252.50.126) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.28; Mon, 4 Mar 2024 09:02:10 +0000 Received: from EX19MTAUEC001.ant.amazon.com (10.252.135.222) by EX19D007EUA002.ant.amazon.com (10.252.50.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.28; Mon, 4 Mar 2024 09:02:09 +0000 Received: from HFA15-CG15235BS.amazon.com (10.1.212.49) by mail-relay.amazon.com (10.252.135.200) with Microsoft SMTP Server id 15.2.1258.28 via Frontend Transport; Mon, 4 Mar 2024 09:02:08 +0000 From: To: CC: , Shai Brandes Subject: [PATCH 20/33] net/ena/hal: check for existing keep alive notification Date: Mon, 4 Mar 2024 11:01:23 +0200 Message-ID: <20240304090136.861-21-shaibran@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240304090136.861-1-shaibran@amazon.com> References: <20240304090136.861-1-shaibran@amazon.com> MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Shai Brandes This commit adds an API to query the aenq on whether there is a pending keep alive notification. Signed-off-by: Shai Brandes Reviewed-by: Amit Bernstein --- drivers/net/ena/hal/ena_com.c | 39 +++++++++++++++++++++++++++++++++++ drivers/net/ena/hal/ena_com.h | 10 +++++++++ 2 files changed, 49 insertions(+) diff --git a/drivers/net/ena/hal/ena_com.c b/drivers/net/ena/hal/ena_com.c index 0d1f4dd715..7a23881667 100644 --- a/drivers/net/ena/hal/ena_com.c +++ b/drivers/net/ena/hal/ena_com.c @@ -2456,6 +2456,45 @@ void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data) mmiowb(); } +bool ena_com_aenq_has_keep_alive(struct ena_com_dev *ena_dev) +{ + struct ena_admin_aenq_common_desc *aenq_common; + struct ena_com_aenq *aenq = &ena_dev->aenq; + struct ena_admin_aenq_entry *aenq_e; + u8 phase = aenq->phase; + u16 masked_head; + + masked_head = aenq->head & (aenq->q_depth - 1); + aenq_e = &aenq->entries[masked_head]; /* Get first entry */ + aenq_common = &aenq_e->aenq_common_desc; + + /* Go over all the events */ + while ((READ_ONCE8(aenq_common->flags) & + ENA_ADMIN_AENQ_COMMON_DESC_PHASE_MASK) == phase) { + /* Make sure the device finished writing the rest of the descriptor + * before reading it. + */ + dma_rmb(); + + if (aenq_common->group == ENA_ADMIN_KEEP_ALIVE) + return true; + + /* Get next event entry */ + masked_head++; + + if (unlikely(masked_head == aenq->q_depth)) { + masked_head = 0; + phase = !phase; + } + + aenq_e = &aenq->entries[masked_head]; + aenq_common = &aenq_e->aenq_common_desc; + } + + return false; +} + + int ena_com_dev_reset(struct ena_com_dev *ena_dev, enum ena_regs_reset_reason_types reset_reason) { diff --git a/drivers/net/ena/hal/ena_com.h b/drivers/net/ena/hal/ena_com.h index c999cd2381..737747f64b 100644 --- a/drivers/net/ena/hal/ena_com.h +++ b/drivers/net/ena/hal/ena_com.h @@ -639,6 +639,16 @@ void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev); */ void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data); +/* ena_com_aenq_has_keep_alive - Retrieve if there is a keep alive notification in the aenq + * @ena_dev: ENA communication layer struct + * + * This method goes over the async event notification queue and returns if there + * is a keep alive notification. + * + * @return - true if there is a keep alive notification in the aenq or false otherwise + */ +bool ena_com_aenq_has_keep_alive(struct ena_com_dev *ena_dev); + /* ena_com_abort_admin_commands - Abort all the outstanding admin commands. * @ena_dev: ENA communication layer struct *