From patchwork Sun Feb 13 20:12:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suman Anna X-Patchwork-Id: 12744681 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 4F23BC433EF for ; Sun, 13 Feb 2022 20:14:43 +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: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=N8aZiqCZ9T0q5z2U1s5TYvS36Q5MPb1FFFgFkcUKStk=; b=wrQbTBJQlfuMcS 4NOuqz4S5Cs2SYYrx1LTCYxSZ3cFcxZ6zapVr1YSarD7ptoTnDrrooGp9gRWo4EHWk1yYJ4JcPO0X CeKM/f1z6lLWrgW/UrN6mcsvnflKq6gTv4m8bTu9OFjiKT4CUur1jV+ZVQ5ei/OFaWF9MSCzSxlUO jL+NA2tARiRyvlKDtmIcs0GdEUfM0AdSemx6xEi/YnpYvIbdqqzAdOnap4sPoCKeyoNGYFwDluMPV X2QdrK5jVK7cTEa8y17+RhJcNLnlWVZpOQ7yBKJyInMhyxPg4vaZIDh1POyCr0XwG/GGjuSQjz+Vi aIaTk16+zrgkOx7rltCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJLFO-00CStQ-B6; Sun, 13 Feb 2022 20:13:26 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJLEt-00CSn3-3m for linux-arm-kernel@lists.infradead.org; Sun, 13 Feb 2022 20:12:58 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 21DKCpoH123615; Sun, 13 Feb 2022 14:12:51 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1644783171; bh=QUgtMxF0n5onBV3IW94Ab7+3PnJF6Yddzd42KgZ6mtE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=kCpg9w09zb2X4KXzCLZJElHZ92/Xam/SM9JQjNsA6BVyl4Ka5CsKkFf//CwAlm3EJ TaOGMbj3BWlZaFtzfTcsD3/iHICmu/7ZZJAb+ujl+Jhvkef9GNnuZNsj/TMUggv8T1 gZoHhCUHMvOZaENehHgu6dDFBntE5LFoZETDwhfI= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 21DKCprF112367 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sun, 13 Feb 2022 14:12:51 -0600 Received: from DLEE101.ent.ti.com (157.170.170.31) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Sun, 13 Feb 2022 14:12:49 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE101.ent.ti.com (157.170.170.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Sun, 13 Feb 2022 14:12:49 -0600 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 21DKCnWQ020625; Sun, 13 Feb 2022 14:12:49 -0600 Received: from localhost ([10.249.37.221]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 21DKCnmY002421; Sun, 13 Feb 2022 14:12:49 -0600 From: Suman Anna To: Bjorn Andersson , Mathieu Poirier Subject: [PATCH v3 4/5] remoteproc: k3-dsp: Refactor mbox request code in start Date: Sun, 13 Feb 2022 14:12:45 -0600 Message-ID: <20220213201246.25952-5-s-anna@ti.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220213201246.25952-1-s-anna@ti.com> References: <20220213201246.25952-1-s-anna@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220213_121255_281567_80F8ABD7 X-CRM114-Status: GOOD ( 17.45 ) 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: , Cc: Praneeth Bajjuri , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Hari Nagalla Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Refactor out the mailbox request and associated ping logic code from k3_dsp_rproc_start() function into its own separate function so that it can be re-used in the soon to be added .attach() ops callback. Signed-off-by: Suman Anna Reviewed-by: Mathieu Poirier --- v3: Updated license years, no code changes v2: https://patchwork.kernel.org/project/linux-remoteproc/patch/20210723220248.6554-5-s-anna@ti.com/ v1: https://patchwork.kernel.org/project/linux-remoteproc/patch/20210522000309.26134-6-s-anna@ti.com/ drivers/remoteproc/ti_k3_dsp_remoteproc.c | 67 ++++++++++++++--------- 1 file changed, 40 insertions(+), 27 deletions(-) diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c index 939c5d90b562..b3ee03da5569 100644 --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c @@ -2,7 +2,7 @@ /* * TI K3 DSP Remote Processor(s) driver * - * Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/ + * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/ * Suman Anna */ @@ -216,6 +216,43 @@ static int k3_dsp_rproc_release(struct k3_dsp_rproc *kproc) return ret; } +static int k3_dsp_rproc_request_mbox(struct rproc *rproc) +{ + struct k3_dsp_rproc *kproc = rproc->priv; + struct mbox_client *client = &kproc->client; + struct device *dev = kproc->dev; + int ret; + + client->dev = dev; + client->tx_done = NULL; + client->rx_callback = k3_dsp_rproc_mbox_callback; + client->tx_block = false; + client->knows_txdone = false; + + kproc->mbox = mbox_request_channel(client, 0); + if (IS_ERR(kproc->mbox)) { + ret = -EBUSY; + dev_err(dev, "mbox_request_channel failed: %ld\n", + PTR_ERR(kproc->mbox)); + return ret; + } + + /* + * Ping the remote processor, this is only for sanity-sake for now; + * there is no functional effect whatsoever. + * + * Note that the reply will _not_ arrive immediately: this message + * will wait in the mailbox fifo until the remote processor is booted. + */ + ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST); + if (ret < 0) { + dev_err(dev, "mbox_send_message failed: %d\n", ret); + mbox_free_channel(kproc->mbox); + return ret; + } + + return 0; +} /* * The C66x DSP cores have a local reset that affects only the CPU, and a * generic module reset that powers on the device and allows the DSP internal @@ -273,37 +310,13 @@ static int k3_dsp_rproc_unprepare(struct rproc *rproc) static int k3_dsp_rproc_start(struct rproc *rproc) { struct k3_dsp_rproc *kproc = rproc->priv; - struct mbox_client *client = &kproc->client; struct device *dev = kproc->dev; u32 boot_addr; int ret; - client->dev = dev; - client->tx_done = NULL; - client->rx_callback = k3_dsp_rproc_mbox_callback; - client->tx_block = false; - client->knows_txdone = false; - - kproc->mbox = mbox_request_channel(client, 0); - if (IS_ERR(kproc->mbox)) { - ret = -EBUSY; - dev_err(dev, "mbox_request_channel failed: %ld\n", - PTR_ERR(kproc->mbox)); + ret = k3_dsp_rproc_request_mbox(rproc); + if (ret) return ret; - } - - /* - * Ping the remote processor, this is only for sanity-sake for now; - * there is no functional effect whatsoever. - * - * Note that the reply will _not_ arrive immediately: this message - * will wait in the mailbox fifo until the remote processor is booted. - */ - ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST); - if (ret < 0) { - dev_err(dev, "mbox_send_message failed: %d\n", ret); - goto put_mbox; - } boot_addr = rproc->bootaddr; if (boot_addr & (kproc->data->boot_align_addr - 1)) {