From patchwork Thu Nov 21 09:12:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dennis-YC Hsieh X-Patchwork-Id: 11255955 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C583114E5 for ; Thu, 21 Nov 2019 09:16:15 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 A35A42071C for ; Thu, 21 Nov 2019 09:16:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="M3n4Pghl"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="DmginNfC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A35A42071C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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=iff4Yt0O/91udDI8XlWQNwUztBNNEIhi+s87bgg1G3w=; b=M3n4PghlbQuPWZ y6z4CUm/CdM7Dfo1vqL90Dd+5jLdvZ6eldi8zu2GCGO3FjDwZHO7ON/14CBHjCSm92lucK3VUpC4k 7ibSIT36yWNdnWOmA1C2eJzwz4TswZ6B4LzGt6oAOTgGF5pVnjC1EzJ5CJZVo/CZMaBVgVhRqKWEd geJ8n+1zb6iJ6IZ2ehyHsO3/U2di/Rqu1iPxNAUP6EdEk6VfpOJ7XXlSIOEamhP6GXZ3AeNHcJ6L7 K3VzWAqp1uL3M7Xj6BfWhK9XVvmxSsokAKk8bHaVjGUDVfCqPf0kg1V9A07+bsoUz/LTSphVqENy7 Pd9KEIkNSOO4HRax2+qA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iXiZS-0005OV-6y; Thu, 21 Nov 2019 09:16:14 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iXiWx-0001c6-Lu; Thu, 21 Nov 2019 09:13:42 +0000 X-UUID: fa03384213314b3c80b6455febd04410-20191121 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=sl45dCqyFBghX7iI92Q7u2tkimKd2NiTQVbQ2SfVmoo=; b=DmginNfCD/7ZrWqMsXN8l371CPx60pRYymb5I75klgB0LDgXwsqNnIu231p9+JTj8Hu0lgYY0sa6VbrXkLjcwPrfGALnoNGI/Jvgt7y9yJsdiQksKURWuAdqo/MB0xd43w5uahnuuByT19fAaoGqbNohjZtXcmuMFZ2YHsgz1Ko=; X-UUID: fa03384213314b3c80b6455febd04410-20191121 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1043932171; Thu, 21 Nov 2019 01:13:34 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 21 Nov 2019 01:13:39 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 21 Nov 2019 17:13:10 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 21 Nov 2019 17:13:30 +0800 From: Dennis YC Hsieh To: Rob Herring , Matthias Brugger , Jassi Brar Subject: [PATCH v1 10/12] soc: mediatek: cmdq: add loop function Date: Thu, 21 Nov 2019 17:12:30 +0800 Message-ID: <1574327552-11806-11-git-send-email-dennis-yc.hsieh@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1574327552-11806-1-git-send-email-dennis-yc.hsieh@mediatek.com> References: <1574327552-11806-1-git-send-email-dennis-yc.hsieh@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 2C673BA1539CA06C501A936EC27C5308E05B7F846F01518540D3F38435ED2A452000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191121_011339_994355_AB897654 X-CRM114-Status: GOOD ( 11.40 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Houlong Wei , Dennis YC Hsieh , linux-mediatek@lists.infradead.org, Bibby Hsieh , CK Hu , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add finalize loop function in cmdq helper functions which loop whole pkt in gce hardware thread without cpu operation. Signed-off-by: Dennis YC Hsieh --- drivers/soc/mediatek/mtk-cmdq-helper.c | 41 ++++++++++++++++++++++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 8 +++++++ 2 files changed, 49 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 4235cf8..3b10241 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -385,12 +385,27 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value) } EXPORT_SYMBOL(cmdq_pkt_assign); +static bool cmdq_pkt_finalized(struct cmdq_pkt *pkt) +{ + struct cmdq_instruction *inst; + + if (pkt->cmd_buf_size < 2 * CMDQ_INST_SIZE) + return false; + + inst = pkt->va_base + pkt->cmd_buf_size - 2 * CMDQ_INST_SIZE; + return inst->op == CMDQ_CODE_EOC; +} + static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_client *cl = pkt->cl; struct cmdq_instruction inst = { {0} }; int err; + /* do not finalize twice */ + if (cmdq_pkt_finalized(pkt)) + return 0; + /* insert EOC and generate IRQ for each command iteration */ inst.op = CMDQ_CODE_EOC; inst.value = CMDQ_EOC_IRQ_EN; @@ -406,6 +421,32 @@ static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) return err; } +int cmdq_pkt_finalize_loop(struct cmdq_pkt *pkt) +{ + struct cmdq_client *cl = pkt->cl; + struct cmdq_instruction inst = { {0} }; + int err; + + /* do not finalize twice */ + if (cmdq_pkt_finalized(pkt)) + return 0; + + /* insert EOC and generate IRQ for each command iteration */ + inst.op = CMDQ_CODE_EOC; + err = cmdq_pkt_append_command(pkt, inst); + if (err < 0) + return err; + + /* JUMP abaolute to begin */ + inst.op = CMDQ_CODE_JUMP; + inst.offset = 1; + inst.value = pkt->pa_base >> cmdq_mbox_shift(cl->chan); + err = cmdq_pkt_append_command(pkt, inst); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_finalize_loop); + static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data) { struct cmdq_pkt *pkt = (struct cmdq_pkt *)data.data; diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index b3474f2..77e8944 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -203,6 +203,14 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value); /** + * cmdq_pkt_finalize_loop() - Append EOC and jump command to loop pkt. + * @pkt: the CMDQ packet + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_finalize_loop(struct cmdq_pkt *pkt); + +/** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ * packet and call back at the end of done packet * @pkt: the CMDQ packet