From patchwork Thu Feb 11 23:46:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Poirier X-Patchwork-Id: 12084477 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=-18.7 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 83698C433E0 for ; Thu, 11 Feb 2021 23:49:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59EFB64E44 for ; Thu, 11 Feb 2021 23:49:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230376AbhBKXs7 (ORCPT ); Thu, 11 Feb 2021 18:48:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230289AbhBKXrh (ORCPT ); Thu, 11 Feb 2021 18:47:37 -0500 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3990AC0611C1 for ; Thu, 11 Feb 2021 15:46:35 -0800 (PST) Received: by mail-pf1-x430.google.com with SMTP id d26so4729009pfn.5 for ; Thu, 11 Feb 2021 15:46:35 -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=0Iy9CzlHfitoEfgTXPac8pcqQPI0KYVgBprjbFY0v+o=; b=f2fKdG75VecpW4vnKLQDkn2QIEdUZf51EfSvwdt7+SHwY5Wez/fyZq05XcUZNkdW4D T5+6xG58xVGkgkeb93Zfz4v0BWqyQOZQqe4TRatXqtNqzO2/WVmzZMIHsP6flILM2WMt w8IiQVx56w20ido3l49l0fMlw4ygABhhabUarmLrNNCeN4PcnWoa2GMvGZ3EX77fnYwx r3wrUFa8450sZ0/Z22YojRqWHzRnS4d0fGbiQ+HKvIJl/n6IlFEl/nsZBbzL5dsFS1pP +18I6/LqXFMHUtnXcysIT+zFPPfsTfzBP3ohUfx6QxfkfTM6wm8kJ/2A9krd0RArNU7a LtMA== 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=0Iy9CzlHfitoEfgTXPac8pcqQPI0KYVgBprjbFY0v+o=; b=qg/k9RcWsFHdpDag87bHkAkdMoAxlVP/8yVhMI3nFKKvDQUfWvWSL7VXcLkWu9zZar AaS1lII2AnixtBG79ntzpoLMmnYVY5Z35BdtTB43/SSg7ftv5l55T1+6M/OqXw4L94QK +ux0Bht2sngBi2uq07LfkngX8tdxSdZKlubJ18ilsR8FtRcefqIgkXFJStcHR70Al0k/ J9k+3r0Fj+xDO/hN5o/uLc8n9rO2vFgPMkIQNfGWoPJ7nin7wNVXho9tipSDrcWuHCYG IP6f8d9ZshDk4BA6kZ7JO2zDdqCBzUQ29bbRdJjPUoGAqST0xQkp1ufdXqXgWaXjwnrJ yzBw== X-Gm-Message-State: AOAM5302n4JEnXB3j8UttPB2/eG+03UFkznP07cVzX5r3ITrvGHIx/34 dpjrQ8sN/WmtJXgWBMXPpQgUBw== X-Google-Smtp-Source: ABdhPJwrMJPkqlAKYVfLIjC5mpAfhDOmVhV/yl6XEDft295TWp6NA27n3YeIFiHQUKMIftTw1KWNZg== X-Received: by 2002:a62:644f:0:b029:1d3:b559:fe7a with SMTP id y76-20020a62644f0000b02901d3b559fe7amr342270pfb.21.1613087194736; Thu, 11 Feb 2021 15:46:34 -0800 (PST) Received: from xps15.cg.shawcable.net (S0106889e681aac74.cg.shawcable.net. [68.147.0.187]) by smtp.gmail.com with ESMTPSA id iq6sm5932740pjb.6.2021.02.11.15.46.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Feb 2021 15:46:34 -0800 (PST) From: Mathieu Poirier To: ohad@wizery.com, bjorn.andersson@linaro.org, arnaud.pouliquen@st.com Cc: robh+dt@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@st.com, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 06/19] remoteproc: Properly represent the attached state Date: Thu, 11 Feb 2021 16:46:14 -0700 Message-Id: <20210211234627.2669674-7-mathieu.poirier@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210211234627.2669674-1-mathieu.poirier@linaro.org> References: <20210211234627.2669674-1-mathieu.poirier@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org There is a need to know when a remote processor has been attached to rather than booted by the remoteproc core. In order to avoid manipulating two variables, i.e rproc::autonomous and rproc::state, get rid of the former and simply use the newly introduced RPROC_ATTACHED state. Signed-off-by: Mathieu Poirier Reviewed-by: Peng Fan Reviewed-by: Arnaud Pouliquen --- drivers/remoteproc/remoteproc_core.c | 20 +------------------- drivers/remoteproc/remoteproc_sysfs.c | 5 +---- include/linux/remoteproc.h | 2 -- 3 files changed, 2 insertions(+), 25 deletions(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 8afc7e1bd28a..e6606d10a4c8 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1444,7 +1444,7 @@ static int __rproc_attach(struct rproc *rproc) goto stop_rproc; } - rproc->state = RPROC_RUNNING; + rproc->state = RPROC_ATTACHED; dev_info(dev, "remote processor %s is now attached\n", rproc->name); @@ -1659,14 +1659,6 @@ static int rproc_stop(struct rproc *rproc, bool crashed) rproc->state = RPROC_OFFLINE; - /* - * The remote processor has been stopped and is now offline, which means - * that the next time it is brought back online the remoteproc core will - * be responsible to load its firmware. As such it is no longer - * autonomous. - */ - rproc->autonomous = false; - dev_info(dev, "stopped remote processor %s\n", rproc->name); return 0; @@ -2080,16 +2072,6 @@ int rproc_add(struct rproc *rproc) if (ret < 0) return ret; - /* - * Remind ourselves the remote processor has been attached to rather - * than booted by the remoteproc core. This is important because the - * RPROC_DETACHED state will be lost as soon as the remote processor - * has been attached to. Used in firmware_show() and reset in - * rproc_stop(). - */ - if (rproc->state == RPROC_DETACHED) - rproc->autonomous = true; - /* if rproc is marked always-on, request it to boot */ if (rproc->auto_boot) { ret = rproc_trigger_auto_boot(rproc); diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index 4b4aab0d4c4b..f9694def9b54 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -138,11 +138,8 @@ static ssize_t firmware_show(struct device *dev, struct device_attribute *attr, * If the remote processor has been started by an external * entity we have no idea of what image it is running. As such * simply display a generic string rather then rproc->firmware. - * - * Here we rely on the autonomous flag because a remote processor - * may have been attached to and currently in a running state. */ - if (rproc->autonomous) + if (rproc->state == RPROC_ATTACHED) firmware = "unknown"; return sprintf(buf, "%s\n", firmware); diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index b0a57ff73849..6b0a0ed30a03 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -512,7 +512,6 @@ struct rproc_dump_segment { * @table_sz: size of @cached_table * @has_iommu: flag to indicate if remote processor is behind an MMU * @auto_boot: flag to indicate if remote processor should be auto-started - * @autonomous: true if an external entity has booted the remote processor * @dump_segments: list of segments in the firmware * @nb_vdev: number of vdev currently handled by rproc * @char_dev: character device of the rproc @@ -549,7 +548,6 @@ struct rproc { size_t table_sz; bool has_iommu; bool auto_boot; - bool autonomous; struct list_head dump_segments; int nb_vdev; u8 elf_class;