From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE6ACC2BBD5 for ; Fri, 18 Dec 2020 17:35:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9040E23B70 for ; Fri, 18 Dec 2020 17:35:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733044AbgLRRex (ORCPT ); Fri, 18 Dec 2020 12:34:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732903AbgLRRec (ORCPT ); Fri, 18 Dec 2020 12:34:32 -0500 Received: from mail-pg1-x533.google.com (mail-pg1-x533.google.com [IPv6:2607:f8b0:4864:20::533]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EB9BC0619E2 for ; Fri, 18 Dec 2020 09:32:42 -0800 (PST) Received: by mail-pg1-x533.google.com with SMTP id n10so1733961pgl.10 for ; Fri, 18 Dec 2020 09:32:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UE369EIBZVX7NEKYpAqFRWbqVEboyiDmoTqg7mEP3ho=; b=CjxlpfgFxYohq4V6dQAABJ7LtWFo36J+n71FUwHVblWZg4woCWLtdlLVEda0nM+ykH LW8zzer3KscVhQHeDYXyEPQUjcaj8tsmHwlw6jOx9VeoUg9nt0Drmr8CISbSkuSmdght huZOgv0vSZ1Sr4JdC5la9BWhQcYL3pM1URaNJYb2eqeti+QiTEKvKQ0RWKcuOKrrxhBH X9R9+v2CoHxRjz6UEumU3MCNW8b1gynT1C7RoDlupJ6srcEKXGhuzz7U/vxGWjbNS699 ZOQE/C50/hIcZR6PgPhS6LWvlPIbxb3BOC11B3abtkswhHEfMniA7RW7Ov5O2WpAqD5v CGyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UE369EIBZVX7NEKYpAqFRWbqVEboyiDmoTqg7mEP3ho=; b=rput+8exAIhrwGxmLQXjgcfHszwxnWLlyLyyLnMJ7+iDl6H3qFsCojTHCTDaZitk9U 4gB/8cntWgiK/4vg7n3Nd2zi4qE7aTpihOTVxtqcjyBAIGe3e0BrJvDhoGd4jNOkxSHs Pb/KfSyqPM5i5TCW0XdBvNmA6SQe5o0rQA48sma+Dk2zKnNX2co13x2VxijKXH+jxLCE H/dbwWO/V0aPKd8hqWHgkfdg/X321byYrI9tDYanmTgTnJp8MF/dMExZ0/KEkulZV797 qRr+vKYhRjqKexAuwa0TSfxvMz71FlyH8dAaWsZIIfW8BLwT+g7AHRTF+pPT7rrdcTNZ IUlQ== X-Gm-Message-State: AOAM532/zL4g0hCg8ZDNCDCK1X/RzoIEMOhlwlZ7eOrLJkhKbVdzKxB/ mp/aMauM9nvYIERsPdCSqnr8yw== X-Google-Smtp-Source: ABdhPJxWYQu1xh9x6SeT5oLCldmQ1WomSeYC9AMjEZj5v07RYMoFJGl3QXAxmlWMnISzyZnPS/qXYA== X-Received: by 2002:aa7:9312:0:b029:19d:fa90:3f42 with SMTP id 18-20020aa793120000b029019dfa903f42mr4887642pfj.18.1608312761769; Fri, 18 Dec 2020 09:32:41 -0800 (PST) Received: from xps15.cg.shawcable.net (S0106889e681aac74.cg.shawcable.net. [68.147.0.187]) by smtp.gmail.com with ESMTPSA id l11sm9892957pgt.79.2020.12.18.09.32.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Dec 2020 09:32:41 -0800 (PST) From: Mathieu Poirier To: ohad@wizery.com, bjorn.andersson@linaro.org, robh+dt@kernel.org Cc: arnaud.pouliquen@st.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 10/17] remoteproc: Add new detach() remoteproc operation Date: Fri, 18 Dec 2020 10:32:21 -0700 Message-Id: <20201218173228.2277032-11-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201218173228.2277032-1-mathieu.poirier@linaro.org> References: <20201218173228.2277032-1-mathieu.poirier@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add an new detach() operation in order to support scenarios where the remoteproc core is going away but the remote processor is kept operating. This could be the case when the system is rebooted or when the platform driver is removed. Signed-off-by: Mathieu Poirier Reviewed-by: Peng Fan Reviewed-by: Arnaud Pouliquen --- include/linux/remoteproc.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index 257a5005f93e..9bb34c3eb847 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -361,6 +361,7 @@ enum rsc_handling_status { * @start: power on the device and boot it * @stop: power off the device * @attach: attach to a device that his already powered up + * @detach: detach from a device, leaving it powered up * @kick: kick a virtqueue (virtqueue id given as a parameter) * @da_to_va: optional platform hook to perform address translations * @parse_fw: parse firmware to extract information (e.g. resource table) @@ -384,6 +385,7 @@ struct rproc_ops { int (*start)(struct rproc *rproc); int (*stop)(struct rproc *rproc); int (*attach)(struct rproc *rproc); + int (*detach)(struct rproc *rproc); void (*kick)(struct rproc *rproc, int vqid); void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len); int (*parse_fw)(struct rproc *rproc, const struct firmware *fw); -- 2.25.1