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Fri, 21 May 2021 19:03:26 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Fri, 21 May 2021 19:03:26 -0500 Received: from fllv0103.dal.design.ti.com (fllv0103.dal.design.ti.com [10.247.120.73]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 14M03QmP113360; Fri, 21 May 2021 19:03:26 -0500 Received: from localhost ([10.250.35.153]) by fllv0103.dal.design.ti.com (8.14.7/8.14.7) with ESMTP id 14M03QU5091539; Fri, 21 May 2021 19:03:26 -0500 From: Suman Anna To: Bjorn Andersson , Mathieu Poirier Subject: [PATCH 3/6] remoteproc: k3-r5: Refactor mbox request code in start Date: Fri, 21 May 2021 19:03:06 -0500 Message-ID: <20210522000309.26134-4-s-anna@ti.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210522000309.26134-1-s-anna@ti.com> References: <20210522000309.26134-1-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-20210521_170328_667146_C46913A6 X-CRM114-Status: GOOD ( 17.74 ) 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: Tero Kristo , Lokesh Vutla , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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_r5_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 --- drivers/remoteproc/ti_k3_r5_remoteproc.c | 66 ++++++++++++++---------- 1 file changed, 40 insertions(+), 26 deletions(-) diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c index 2975393ebacd..e7e1ca71763e 100644 --- a/drivers/remoteproc/ti_k3_r5_remoteproc.c +++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c @@ -376,6 +376,44 @@ static inline int k3_r5_core_run(struct k3_r5_core *core) 0, PROC_BOOT_CTRL_FLAG_R5_CORE_HALT); } +static int k3_r5_rproc_request_mbox(struct rproc *rproc) +{ + struct k3_r5_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_r5_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 R5F cores have controls for both a reset and a halt/run. The code * execution from DDR requires the initial boot-strapping code to be run @@ -495,38 +533,14 @@ static int k3_r5_rproc_start(struct rproc *rproc) { struct k3_r5_rproc *kproc = rproc->priv; struct k3_r5_cluster *cluster = kproc->cluster; - struct mbox_client *client = &kproc->client; struct device *dev = kproc->dev; struct k3_r5_core *core; u32 boot_addr; int ret; - client->dev = dev; - client->tx_done = NULL; - client->rx_callback = k3_r5_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_r5_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; /* TODO: add boot_addr sanity checking */