From patchwork Mon Sep 10 17:15:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Horia Geanta X-Patchwork-Id: 10594571 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BAD1E1515 for ; Mon, 10 Sep 2018 17:17:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F6FD28C03 for ; Mon, 10 Sep 2018 17:17:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 92F0728D20; Mon, 10 Sep 2018 17:17:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3475328C03 for ; Mon, 10 Sep 2018 17:17:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=se3Nq8hAVl1Fi17zgdoz6bRUl/tgEhbouztYom+U/7U=; b=bWpzO+HyPH4AYe B9MNj3bwclR+djGkGe6XH+yCUDsbZiMNuxIUSGnL7E24EdO2IB1fUk5JXtXgJWoFp+kY2ApDE3yaF JXIdH+vFL8Jg1KDin7nWkjY8JhRt7xW4KMcvwui8bnDicJfVP/4yRfAp4rElDPKj/joGWM7tyv9FM OyDfn0TlPIUtMoPSt1j6My+eB0OaWGrucw9ABPu21ezVRPQTHVmXpHsjOJhcKK6Oh3POzsSGd8/Yq 5RTvRjV5+c8jSAGUdDpHYbeu25EuobxGuiJyHSHSpJXt1UvOQsTAUaEqx911NiLZmEOdph9VoUIpr wO+r4u28OlFJTWDUZi/w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fzPoZ-0006xL-R9; Mon, 10 Sep 2018 17:17:31 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fzPnn-0006cF-6y for linux-arm-kernel@lists.infradead.org; Mon, 10 Sep 2018 17:16:47 +0000 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_Geant=C4=83?= To: Herbert Xu , Stuart Yoder , Laurentiu Tudor , Li Yang , Roy Pledge , Catalin Marinas , Will Deacon 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 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180910_101643_753775_156902B9 X-CRM114-Status: UNSURE ( 8.96 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, Aymen Sghaier , "David S . Miller" , linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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 Acked-by: Li Yang --- 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 */