From patchwork Wed Jan 16 05:04:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q0sgSHUgKOiDoeS/iuWFiSk=?= X-Patchwork-Id: 10765419 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 3FEC713BF for ; Wed, 16 Jan 2019 05:08:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2C8462B1AF for ; Wed, 16 Jan 2019 05:08:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1F04A2B1E8; Wed, 16 Jan 2019 05:08:33 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable 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 C94522B1AF for ; Wed, 16 Jan 2019 05:08:32 +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=65e30x8BDKrW1CselS3CKbOOinUOUY8tFkdfzmNdNy4=; b=kTj9/5LxvApyHL ozQlNL8XYytocMAdKCmhyBYoMiaBBLGGMI9aSOmhaJMvw3PTcEgmrq18IvUSl87m3jbKTyBXJDr4y +QjMG7D7rqIpulkOT7lXfdQm3Y9oucMY/sj/mRZfTnz14naNa9MRMhWPqY1BV1ffBDFU+sO/xTEpy OKDndNd/iO2Pg0cBLvemJHs2RrQKqunD8IinIos8RECNEveWxwglf3tZFLSgT7+BT58vY1brVEKFE tqMbUbrslYiaCVgeacw+P64ojzVp2ngvcz5x/RgCg8Fju5D9a87sem6lMp9D5RKdDhDb5+78dExJM g9P9DT4Y2o34XDTnx2/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 1gjdRG-0006i7-HR; Wed, 16 Jan 2019 05:08:30 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjdQK-0005e8-Ai; Wed, 16 Jan 2019 05:07:33 +0000 X-UUID: 25ffdfcfd0044776b5b577dced84ea70-20190115 X-UUID: 25ffdfcfd0044776b5b577dced84ea70-20190115 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1678661172; Tue, 15 Jan 2019 21:07:26 -0800 Received: from mtkmbs03n2.mediatek.inc (172.21.101.182) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 15 Jan 2019 21:07:24 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs03n2.mediatek.inc (172.21.101.182) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 16 Jan 2019 13:07:22 +0800 Received: from mtkslt305.mediatek.inc (10.21.14.140) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 16 Jan 2019 13:07:22 +0800 From: CK Hu To: Jassi Brar , Matthias Brugger , Houlong Wei Subject: [PATCH 2/3] mailbox: mediatek: Implement abort_data function. Date: Wed, 16 Jan 2019 13:04:34 +0800 Message-ID: <20190116050435.11624-3-ck.hu@mediatek.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20190116050435.11624-1-ck.hu@mediatek.com> References: <20190116050435.11624-1-ck.hu@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 69A7877979E11386BBE973F251CDFD145478041FA21F307B5E29E033EBCC8AFE2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190115_210732_369915_0C60CD45 X-CRM114-Status: UNSURE ( 9.87 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: CK Hu , srv_heupstream@mediatek.com, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP For client driver which need to reorganize the command buffer, it could use this function to abort the sent but not executed command buffer. Signed-off-by: CK Hu --- drivers/mailbox/mtk-cmdq-mailbox.c | 40 ++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index 22811784dc7d..f2219f263ef6 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -417,6 +417,45 @@ static int cmdq_mbox_send_data(struct mbox_chan *chan, void *data) return 0; } +static void cmdq_mbox_abort_data(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; + u32 enable; + + spin_lock_irqsave(&thread->chan->lock, flags); + if (list_empty(&thread->task_busy_list)) + goto out; + + WARN_ON(cmdq_thread_suspend(cmdq, thread) < 0); + if (!cmdq_thread_is_in_wfe(thread)) + goto wait; + + list_for_each_entry_safe(task, tmp, &thread->task_busy_list, + list_entry) { + list_del(&task->list_entry); + kfree(task); + } + + cmdq_thread_resume(thread); + cmdq_thread_disable(cmdq, thread); + clk_disable(cmdq->clock); + +out: + spin_unlock_irqrestore(&thread->chan->lock, flags); + return; + +wait: + cmdq_thread_resume(thread); + spin_unlock_irqrestore(&thread->chan->lock, flags); + if (readl_poll_timeout_atomic(thread->base + CMDQ_THR_ENABLE_TASK, + enable, !enable, 1, 20)) + dev_err(cmdq->mbox.dev, "Fail to wait GCE thread 0x%x done\n", + (u32)(thread->base - cmdq->base)); +} + static int cmdq_mbox_startup(struct mbox_chan *chan) { return 0; @@ -427,6 +466,7 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan) } static const struct mbox_chan_ops cmdq_mbox_chan_ops = { + .abort_data = cmdq_mbox_abort_data, .send_data = cmdq_mbox_send_data, .startup = cmdq_mbox_startup, .shutdown = cmdq_mbox_shutdown,