From patchwork Thu May 16 09:02:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibby Hsieh X-Patchwork-Id: 10946005 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 353131390 for ; Thu, 16 May 2019 09:03:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 23A9D28A0F for ; Thu, 16 May 2019 09:03:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 217ED28949; Thu, 16 May 2019 09:03:28 +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=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 B721828949 for ; Thu, 16 May 2019 09:03:27 +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=5kMZ1A0tU1jqOunrgR6/oZshG5bu4FSKo3VuWfuClxY=; b=bRgJm8KNa/Rjvq wIlbwJorUOiswX7vEe1qT4vw5zX5pTg6sWjrjYYMyhFjXKrXtTzOiFQsgn8rmk423UdKl2OomUksG EGap/nExNJrtDRfn3aZes5rGEjYHcPcvi3Dy+fK2Kx3pMCmWiFu6YVyKcKm+v6J28nTBTt/XlGR5y GkbTDGXa6BMTCZEH2JUr3AeRg/R9+w9LFAaaD5eA3iB8wYvC1QdVybqu9RS/bbdXZeyiRVMDFpAGj 4qtqa7YBJleAcCHnXqlFRz4Xme+ytLxswSOzSAS+rYrG2QhjOe8BPOwJYP9TmhcfXBKy8i1vlSfgS pk3ib5At7YZuSFdc08RA==; 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 1hRCIJ-0005Z6-D3; Thu, 16 May 2019 09:03:19 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hRCHd-0004gO-1u; Thu, 16 May 2019 09:02:44 +0000 X-UUID: 2d555267fd5c4732a8dd041c54207cf1-20190516 X-UUID: 2d555267fd5c4732a8dd041c54207cf1-20190516 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1456955328; Thu, 16 May 2019 01:02:30 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 16 May 2019 02:02:29 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 16 May 2019 17:02:28 +0800 Received: from mtkslt302.mediatek.inc (10.21.14.115) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 16 May 2019 17:02:28 +0800 From: Bibby Hsieh To: Jassi Brar , Matthias Brugger , Rob Herring , CK HU Subject: [PATCH v6 09/12] soc: mediatek: cmdq: add polling function Date: Thu, 16 May 2019 17:02:21 +0800 Message-ID: <20190516090224.59070-10-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190516090224.59070-1-bibby.hsieh@mediatek.com> References: <20190516090224.59070-1-bibby.hsieh@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190516_020237_265274_1D3689C0 X-CRM114-Status: GOOD ( 11.70 ) 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: devicetree@vger.kernel.org, Nicolas Boichat , Philipp Zabel , srv_heupstream@mediatek.com, Daoyuan Huang , Sascha Hauer , linux-kernel@vger.kernel.org, Daniel Kurtz , Houlong Wei , linux-mediatek@lists.infradead.org, Dennis-YC Hsieh , Sascha Hauer , YT Shen , Jiaguang Zhang , Bibby Hsieh , linux-arm-kernel@lists.infradead.org, ginny.chen@mediatek.com 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 polling function in cmdq helper functions Signed-off-by: Bibby Hsieh Reviewed-by: CK Hu --- drivers/soc/mediatek/mtk-cmdq-helper.c | 28 ++++++++++++++++++++++++ include/linux/mailbox/mtk-cmdq-mailbox.h | 1 + include/linux/soc/mediatek/mtk-cmdq.h | 15 +++++++++++++ 3 files changed, 44 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 17ee8196fb3d..a53cdd71cfc2 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -220,6 +220,34 @@ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) } EXPORT_SYMBOL(cmdq_pkt_clear_event); +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask) +{ + struct cmdq_instruction *inst; + + if (mask != 0xffffffff) { + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_MASK; + inst->value = ~mask; + offset = offset | 0x1; + } + + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_POLL; + inst->value = value; + inst->offset = offset; + inst->subsys = subsys; + + return 0; +} +EXPORT_SYMBOL(cmdq_pkt_poll); + static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_instruction *inst; diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index f21801d32a3a..1dfd5ed5c8c5 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -46,6 +46,7 @@ enum cmdq_code { CMDQ_CODE_MASK = 0x02, CMDQ_CODE_WRITE = 0x04, + CMDQ_CODE_POLL = 0x08, CMDQ_CODE_JUMP = 0x10, CMDQ_CODE_WFE = 0x20, CMDQ_CODE_EOC = 0x40, diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 52f69c8db8de..0651a0bffa54 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -99,6 +99,21 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event); */ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event); +/** + * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to + * execute an instruction that wait for a specified hardware + * register to check for the value. All GCE hardware + * threads will be blocked by this instruction. + * @pkt: the CMDQ packet + * @subsys: the CMDQ sub system code + * @offset: register offset from CMDQ sub system + * @value: the specified target register value + * @mask: the specified target register mask + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask); /** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ * packet and call back at the end of done packet