From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82BEEC4321E for ; Mon, 10 Sep 2018 17:17:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C0502086E for ; Mon, 10 Sep 2018 17:17:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C0502086E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728676AbeIJWLf (ORCPT ); Mon, 10 Sep 2018 18:11:35 -0400 Received: from inva020.nxp.com ([92.121.34.13]:59572 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728296AbeIJWLe (ORCPT ); Mon, 10 Sep 2018 18:11:34 -0400 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 723C81A0190; Mon, 10 Sep 2018 19:16:28 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 661751A011F; Mon, 10 Sep 2018 19:16:28 +0200 (CEST) Received: from enigma.ea.freescale.net (enigma.ea.freescale.net [10.171.81.110]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id D24612060B; Mon, 10 Sep 2018 19:16:27 +0200 (CEST) From: =?UTF-8?q?Horia=20Geant=C4=83?= To: Herbert Xu , Stuart Yoder , Laurentiu Tudor , Li Yang , Roy Pledge , Catalin Marinas , Will Deacon Cc: "David S . Miller" , Aymen Sghaier , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 04/11] soc: fsl: dpio: add congestion notification support Date: Mon, 10 Sep 2018 20:15:43 +0300 Message-Id: <20180910171550.5659-5-horia.geanta@nxp.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180910171550.5659-1-horia.geanta@nxp.com> References: <20180910171550.5659-1-horia.geanta@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for Congestion State Change Notifications (CSCN), which allow DPIO users to be notified when a congestion group changes its state (due to hitting the entrance / exit threshold). Signed-off-by: Horia Geantă --- include/soc/fsl/dpaa2-global.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/soc/fsl/dpaa2-global.h b/include/soc/fsl/dpaa2-global.h index 9bc0713346a8..2bfc379d3dc9 100644 --- a/include/soc/fsl/dpaa2-global.h +++ b/include/soc/fsl/dpaa2-global.h @@ -174,4 +174,19 @@ static inline const struct dpaa2_fd *dpaa2_dq_fd(const struct dpaa2_dq *dq) return (const struct dpaa2_fd *)&dq->dq.fd[0]; } +#define DPAA2_CSCN_SIZE sizeof(struct dpaa2_dq) +#define DPAA2_CSCN_ALIGN 16 +#define DPAA2_CSCN_STATE_CG BIT(0) + +/** + * dpaa2_cscn_state_congested() - Check congestion state + * @cscn: congestion SCN (delivered to WQ or memory) + * +i * Return true is congested. + */ +static inline bool dpaa2_cscn_state_congested(struct dpaa2_dq *cscn) +{ + return !!(cscn->scn.state & DPAA2_CSCN_STATE_CG); +} + #endif /* __FSL_DPAA2_GLOBAL_H */ -- 2.16.2