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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable 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 A641DC10F28 for ; Mon, 9 Mar 2020 08:13:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 76FF620728 for ; Mon, 9 Mar 2020 08:13:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="sxd+C6H/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76FF620728 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5632289F06; Mon, 9 Mar 2020 08:13:39 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [210.61.82.183]) by gabe.freedesktop.org (Postfix) with ESMTP id C4BAA6E290 for ; Sun, 8 Mar 2020 10:53:03 +0000 (UTC) X-UUID: 6f359e42dd4d4c46b05d72c003071d9a-20200308 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=D+dXiJm3APaX+tyDPhHiGjNPGNdy177jnTfCoMxdsUw=; b=sxd+C6H/1pJCw+IlJf2+1lPp0CGxZE30QBviNTfBqoTD8JeZjWGixl5rsmWbKUds+RvDXYJj9IptO+GWrF7ILMruAk2SvhoOjgdPEP1MkFxwMxMJ+cYNR6gOMyc5QMGnPmSUykM1Ch6N1E4xzgQyfg2Ro613Pl4rFENkImCBuNo=; X-UUID: 6f359e42dd4d4c46b05d72c003071d9a-20200308 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 278304618; Sun, 08 Mar 2020 18:53:00 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 8 Mar 2020 18:52:02 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Sun, 8 Mar 2020 18:52:58 +0800 From: Dennis YC Hsieh To: Rob Herring , Mark Rutland , Matthias Brugger , Jassi Brar , Philipp Zabel , David Airlie , Daniel Vetter Subject: [PATCH v5 04/13] mailbox: mediatek: cmdq: clear task in channel before shutdown Date: Sun, 8 Mar 2020 18:52:46 +0800 Message-ID: <1583664775-19382-5-git-send-email-dennis-yc.hsieh@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1583664775-19382-1-git-send-email-dennis-yc.hsieh@mediatek.com> References: <1583664775-19382-1-git-send-email-dennis-yc.hsieh@mediatek.com> MIME-Version: 1.0 X-MTK: N X-Mailman-Approved-At: Mon, 09 Mar 2020 08:13:37 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, HS Liao , Dennis YC Hsieh , linux-mediatek@lists.infradead.org, Houlong Wei , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Do success callback in channel when shutdown. For those task not finish, callback with error code thus client has chance to cleanup or reset. Signed-off-by: Dennis YC Hsieh Reviewed-by: CK Hu --- drivers/mailbox/mtk-cmdq-mailbox.c | 38 ++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index 9994ac9426d6..b56d340c8982 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -387,6 +387,12 @@ static int cmdq_mbox_send_data(struct mbox_chan *chan, void *data) if (list_empty(&thread->task_busy_list)) { WARN_ON(clk_enable(cmdq->clock) < 0); + /* + * The thread reset will clear thread related register to 0, + * including pc, end, priority, irq, suspend and enable. Thus + * set CMDQ_THR_ENABLED to CMDQ_THR_ENABLE_TASK will enable + * thread and make it running. + */ WARN_ON(cmdq_thread_reset(cmdq, thread) < 0); writel(task->pa_base >> cmdq->shift_pa, @@ -450,6 +456,38 @@ static int cmdq_mbox_startup(struct mbox_chan *chan) static void cmdq_mbox_shutdown(struct mbox_chan *chan) { + struct cmdq_thread *thread = (struct cmdq_thread *)chan->con_priv; + struct cmdq *cmdq = dev_get_drvdata(chan->mbox->dev); + struct cmdq_task *task, *tmp; + unsigned long flags; + + spin_lock_irqsave(&thread->chan->lock, flags); + if (list_empty(&thread->task_busy_list)) + goto done; + + WARN_ON(cmdq_thread_suspend(cmdq, thread) < 0); + + /* make sure executed tasks have success callback */ + cmdq_thread_irq_handler(cmdq, thread); + if (list_empty(&thread->task_busy_list)) + goto done; + + list_for_each_entry_safe(task, tmp, &thread->task_busy_list, + list_entry) { + cmdq_task_exec_done(task, CMDQ_CB_ERROR); + kfree(task); + } + + cmdq_thread_disable(cmdq, thread); + clk_disable(cmdq->clock); +done: + /* + * The thread->task_busy_list empty means thread already disable. The + * cmdq_mbox_send_data() always reset thread which clear disable and + * suspend statue when first pkt send to channel, so there is no need + * to do any operation here, only unlock and leave. + */ + spin_unlock_irqrestore(&thread->chan->lock, flags); } static const struct mbox_chan_ops cmdq_mbox_chan_ops = { -- 2.18.0 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel