From patchwork Thu Nov 3 19:52:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13030963 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id C35DEC433FE for ; Thu, 3 Nov 2022 19:57:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LHNWqlvL6dk1KNp3bm4+qH121OxDlnkA6t03JfOgjms=; b=N2I/Gozz7yLyPo Nka1DprwWLMTbkWIpclFN0Ph+I90l9ZwsKNbMpYTLB/5Mq8TzKtwSDM5rWd57KdmwOmDA0n/3rWCH GF371u4Pups02E+JdQwGALFkFdXzURmGS7WDfS4TS0MtHsaImCx+Afao+KRO09jknuXx1cG/8WqQG 0eN+pvhVPXxMe29llZGXSQ5IauiMilGKMWCbYc+fRk81wFe2k+QwVvuty5w574iKvtTldWS5MWQhb MJH9JDmCg6bOQVY/tH9U4E0vPSzEaMR9eEg/De6qpYVjSAuFUNZWp86BspTVTPKPBT1hBSTdg5hy3 HwYn6k04ypgpn6wb4j/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqgJq-001Ufv-Mr; Thu, 03 Nov 2022 19:56:06 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqgGt-001TDD-Fy for linux-arm-kernel@lists.infradead.org; Thu, 03 Nov 2022 19:53:06 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5A6B41FB; Thu, 3 Nov 2022 12:53:07 -0700 (PDT) Received: from e120937-lin.fritz.box (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 181DC3F534; Thu, 3 Nov 2022 12:52:58 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com, etienne.carriere@linaro.org, vincent.guittot@linaro.org, souvik.chakravarty@arm.com, wleavitt@marvell.com, peter.hilber@opensynergy.com, nicola.mazzucato@arm.com, tarek.el-sherbiny@arm.com, quic_kshivnan@quicinc.com, cristian.marussi@arm.com Subject: [PATCH v5 05/14] firmware: arm_scmi: Refactor scmi_wait_for_message_response Date: Thu, 3 Nov 2022 19:52:16 +0000 Message-Id: <20221103195225.1028864-6-cristian.marussi@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221103195225.1028864-1-cristian.marussi@arm.com> References: <20221103195225.1028864-1-cristian.marussi@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221103_125304_893923_254FAA1B X-CRM114-Status: GOOD ( 13.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Refactor scmi_wait_for_message_response() to use a internal helper to carry out its main duties; while doing that make it accept directly an scmi_desc parameter to interact with the configured transport. No functional change. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/driver.c | 57 +++++++++++++++++------------- 1 file changed, 33 insertions(+), 24 deletions(-) diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 080e0d4e921b..33b123da3053 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -791,36 +791,18 @@ static bool scmi_xfer_done_no_timeout(struct scmi_chan_info *cinfo, ktime_after(ktime_get(), stop); } -/** - * scmi_wait_for_message_response - An helper to group all the possible ways of - * waiting for a synchronous message response. - * - * @cinfo: SCMI channel info - * @xfer: Reference to the transfer being waited for. - * - * Chooses waiting strategy (sleep-waiting vs busy-waiting) depending on - * configuration flags like xfer->hdr.poll_completion. - * - * Return: 0 on Success, error otherwise. - */ -static int scmi_wait_for_message_response(struct scmi_chan_info *cinfo, - struct scmi_xfer *xfer) +static int scmi_wait_for_reply(struct device *dev, const struct scmi_desc *desc, + struct scmi_chan_info *cinfo, + struct scmi_xfer *xfer, unsigned int timeout_ms) { - struct scmi_info *info = handle_to_scmi_info(cinfo->handle); - struct device *dev = info->dev; - int ret = 0, timeout_ms = info->desc->max_rx_timeout_ms; - - trace_scmi_xfer_response_wait(xfer->transfer_id, xfer->hdr.id, - xfer->hdr.protocol_id, xfer->hdr.seq, - timeout_ms, - xfer->hdr.poll_completion); + int ret = 0; if (xfer->hdr.poll_completion) { /* * Real polling is needed only if transport has NOT declared * itself to support synchronous commands replies. */ - if (!info->desc->sync_cmds_completed_on_ret) { + if (!desc->sync_cmds_completed_on_ret) { /* * Poll on xfer using transport provided .poll_done(); * assumes no completion interrupt was available. @@ -846,7 +828,7 @@ static int scmi_wait_for_message_response(struct scmi_chan_info *cinfo, */ spin_lock_irqsave(&xfer->lock, flags); if (xfer->state == SCMI_XFER_SENT_OK) { - info->desc->ops->fetch_response(cinfo, xfer); + desc->ops->fetch_response(cinfo, xfer); xfer->state = SCMI_XFER_RESP_OK; } spin_unlock_irqrestore(&xfer->lock, flags); @@ -870,6 +852,33 @@ static int scmi_wait_for_message_response(struct scmi_chan_info *cinfo, return ret; } +/** + * scmi_wait_for_message_response - An helper to group all the possible ways of + * waiting for a synchronous message response. + * + * @cinfo: SCMI channel info + * @xfer: Reference to the transfer being waited for. + * + * Chooses waiting strategy (sleep-waiting vs busy-waiting) depending on + * configuration flags like xfer->hdr.poll_completion. + * + * Return: 0 on Success, error otherwise. + */ +static int scmi_wait_for_message_response(struct scmi_chan_info *cinfo, + struct scmi_xfer *xfer) +{ + struct scmi_info *info = handle_to_scmi_info(cinfo->handle); + struct device *dev = info->dev; + + trace_scmi_xfer_response_wait(xfer->transfer_id, xfer->hdr.id, + xfer->hdr.protocol_id, xfer->hdr.seq, + info->desc->max_rx_timeout_ms, + xfer->hdr.poll_completion); + + return scmi_wait_for_reply(dev, info->desc, cinfo, xfer, + info->desc->max_rx_timeout_ms); +} + /** * do_xfer() - Do one transfer *