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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EA7BC433F5 for ; Thu, 14 Oct 2021 10:25:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 667EF610D0 for ; Thu, 14 Oct 2021 10:25:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230248AbhJNK1o (ORCPT ); Thu, 14 Oct 2021 06:27:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40250 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230206AbhJNK1m (ORCPT ); Thu, 14 Oct 2021 06:27:42 -0400 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2246C061753; Thu, 14 Oct 2021 03:25:37 -0700 (PDT) Received: by mail-pf1-x42a.google.com with SMTP id v8so921767pfu.11; Thu, 14 Oct 2021 03:25:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=0kiJE6ydtmKqRe18PZUG0B4gj6oD52RxLkVjLWIgpQI=; b=R6oW9dVdAeoLwTrawZf5yrWQUPE1ZeLvT9IhoCVARM88QuAX2tu/qGKIYDMkmema25 CPHIutl43UcBsQXAlmUN/dRdW8iOC8jclQfLYHMxP8Rr3dO3hUEFId4kEK2WCMGvTgEs 5+iHT7WIK6QWYNATP+AG2BMMjnZruahpkPu8E4i9e/IMooKPgowUOlTbPlNLuG5foELc k6rW5beaIY0iJUjtymD+m6bUWb9ZytBQGzvbfyiDvySm1cdPwePNj+x+JIM74TonSXIq tkpsJbloxOE0wFWdMtbcFx7gzZ3vHvgO24gyFVRiV8lD20eLEACdtApY0asvlkWScQMv eBZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=0kiJE6ydtmKqRe18PZUG0B4gj6oD52RxLkVjLWIgpQI=; b=wcwBp/5WCjKkZ3Ur+dww8iaFbXNFpTi86zuF8zkwlGUBp9ekyMCFEFmb+HuSEyfMIO UUku/SxjHu7rl4F/L8exZeTvznKlNLEKobMNpkgWxcUg4sMpDo0ZGepNu+2yLIQbtm/d HEbCIv6v/oMGKKMmwh6yzeNgGhLWLNGX4RUiZI+Y2fsmPdZrP3zkoLWxshrzvpSZ3LTl 2BTZbXA8VrrdE7+WmpT7r865tICjHW7l4QITlb1DI1dVk9/qmpA8DRBR07eHnXsyHtk5 wBo7N4F2orE2QmejvR54D51i8Vi1UUMHg0ABmWP+8Fb7h6IyDw/akyPWbah6HIGiFa5v d60w== X-Gm-Message-State: AOAM5327Q322WBEnwK25HoZPenuT4s2yogZSO1H81d6G4/bjegVEfDXE UWl/A8585QMPWbI11rZQoj+ZipeW+zX3rg== X-Google-Smtp-Source: ABdhPJzGYLmPdVc2CLUIFEqVz5CqBh5QSElaxsGAdI5+AKge0cygzjxUFllk/UutqL98tKSu/yGVBQ== X-Received: by 2002:a63:1444:: with SMTP id 4mr3465096pgu.251.1634207137564; Thu, 14 Oct 2021 03:25:37 -0700 (PDT) Received: from fmin-OptiPlex-7060.nreal.work ([137.59.103.165]) by smtp.gmail.com with ESMTPSA id ip10sm2105939pjb.40.2021.10.14.03.25.32 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Oct 2021 03:25:37 -0700 (PDT) From: dillon.minfei@gmail.com To: mchehab@kernel.org, mchehab+huawei@kernel.org, hverkuil-cisco@xs4all.nl, ezequiel@collabora.com, gnurou@gmail.com, pihsun@chromium.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, gabriel.fernandez@st.com, gabriel.fernandez@foss.st.com Cc: patrice.chotard@foss.st.com, hugues.fruchet@foss.st.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, Dillon Min Subject: [PATCH v4 5/8] media: v4l2-mem2mem: add v4l2_m2m_get_unmapped_area for no-mmu platform Date: Thu, 14 Oct 2021 18:25:03 +0800 Message-Id: <1634207106-7632-6-git-send-email-dillon.minfei@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1634207106-7632-1-git-send-email-dillon.minfei@gmail.com> References: <1634207106-7632-1-git-send-email-dillon.minfei@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org From: Dillon Min For platforms without MMU the m2m provides a helper method v4l2_m2m_get_unmapped_area(), The mmap() routines will call this to get a proposed address for the mapping. More detailed information about get_unmapped_area can be found in Documentation/nommu-mmap.txt Signed-off-by: Dillon Min --- v4: no change. drivers/media/v4l2-core/v4l2-mem2mem.c | 21 +++++++++++++++++++++ include/media/v4l2-mem2mem.h | 5 +++++ 2 files changed, 26 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index e7f4bf5bc8dd..e2654b422334 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -966,6 +966,27 @@ int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, } EXPORT_SYMBOL(v4l2_m2m_mmap); +#ifndef CONFIG_MMU +unsigned long v4l2_m2m_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct v4l2_fh *fh = file->private_data; + unsigned long offset = pgoff << PAGE_SHIFT; + struct vb2_queue *vq; + + if (offset < DST_QUEUE_OFF_BASE) { + vq = v4l2_m2m_get_src_vq(fh->m2m_ctx); + } else { + vq = v4l2_m2m_get_dst_vq(fh->m2m_ctx); + pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT); + } + + return vb2_get_unmapped_area(vq, addr, len, pgoff, flags); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_get_unmapped_area); +#endif + #if defined(CONFIG_MEDIA_CONTROLLER) void v4l2_m2m_unregister_media_controller(struct v4l2_m2m_dev *m2m_dev) { diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index 5a91b548ecc0..fdbd5257e020 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -495,6 +495,11 @@ __poll_t v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct vm_area_struct *vma); +#ifndef CONFIG_MMU +unsigned long v4l2_m2m_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags); +#endif /** * v4l2_m2m_init() - initialize per-driver m2m data * -- 2.7.4 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63EB3C433EF for ; Thu, 14 Oct 2021 10:29:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 31444610CC for ; Thu, 14 Oct 2021 10:29:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 31444610CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=Czf3Bud8ZfqASvozLQ54RWVZ7SC4ve5yhWwzFoYst9o=; b=RIIeG1an3ufDr1 zTiZEBeG2XQ356queSg7mPO2NAtefJJfBQM89kVFC+cHelvUKtnMEFActMLbfkPhISpfad2A6n+j7 mKP1UWTHj1qMTJKdck2X0cYNv6zz/BirMjqagFFl1mRH3GzK6elrWcYBcAJej8qU8JDYxhLMk/Z9P R3h8eL53HEY+914VMIYcrlIMYCXbMbmg0cKDvJr1V1ni2hcBOKZ5OdYdYq0ciZUADWOXIS7JsVwiH Ah2lFeLpxFdenCSvS5PRWynGMt4y8d9zEYIy+pjozwGtjpgQPzaj3vLDs5ZkERnH2Glt/jUYIRBx/ rb2z6Y7/kEgLY9OOHNqw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1maxwY-002YY6-D1; Thu, 14 Oct 2021 10:26:35 +0000 Received: from mail-pg1-x52a.google.com ([2607:f8b0:4864:20::52a]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1maxve-002YE9-Lk for linux-arm-kernel@lists.infradead.org; Thu, 14 Oct 2021 10:25:41 +0000 Received: by mail-pg1-x52a.google.com with SMTP id 66so5075675pgc.9 for ; Thu, 14 Oct 2021 03:25:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=0kiJE6ydtmKqRe18PZUG0B4gj6oD52RxLkVjLWIgpQI=; b=R6oW9dVdAeoLwTrawZf5yrWQUPE1ZeLvT9IhoCVARM88QuAX2tu/qGKIYDMkmema25 CPHIutl43UcBsQXAlmUN/dRdW8iOC8jclQfLYHMxP8Rr3dO3hUEFId4kEK2WCMGvTgEs 5+iHT7WIK6QWYNATP+AG2BMMjnZruahpkPu8E4i9e/IMooKPgowUOlTbPlNLuG5foELc k6rW5beaIY0iJUjtymD+m6bUWb9ZytBQGzvbfyiDvySm1cdPwePNj+x+JIM74TonSXIq tkpsJbloxOE0wFWdMtbcFx7gzZ3vHvgO24gyFVRiV8lD20eLEACdtApY0asvlkWScQMv eBZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=0kiJE6ydtmKqRe18PZUG0B4gj6oD52RxLkVjLWIgpQI=; b=t7A+bN1tatJcDyl/YbA9hUnEAKP7XhQMUhkppI7LaOcCZo4EOKt2oTZzYSxEl6I25M gzW64MiC0l2rZlEhg5ImFiMQtw0+C2bsJBEWmVBk932U/+/Bb1b+0SAY4Ps2gLDLqhWx U/n+iPjbCBpcbVPvJPaukyg+TfqjX8uEuRrFtg11J1kLi3P9r/vy5LXdM5w36XwYtEDI I1YXeDPiP9U0UIjSTDRhoPoNNm7F7gvpyut6z9j8JvMmgp1/foZ4N4mvGxEtWP2gBQGU zh0tMLCHhmND/U3RdCNTe1FWNDVPQn/Ky7KnIBlFbB94kaxqGVydrlRQlOtBnyh6QiOc Aq0A== X-Gm-Message-State: AOAM532X9FknaKQfg+q3XuHrN0/GF4amSV3c5T5e2ARKsmWHrK7jHtGi a2+7lIl7NpW7V5HEpPCEnR0= X-Google-Smtp-Source: ABdhPJzGYLmPdVc2CLUIFEqVz5CqBh5QSElaxsGAdI5+AKge0cygzjxUFllk/UutqL98tKSu/yGVBQ== X-Received: by 2002:a63:1444:: with SMTP id 4mr3465096pgu.251.1634207137564; Thu, 14 Oct 2021 03:25:37 -0700 (PDT) Received: from fmin-OptiPlex-7060.nreal.work ([137.59.103.165]) by smtp.gmail.com with ESMTPSA id ip10sm2105939pjb.40.2021.10.14.03.25.32 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Oct 2021 03:25:37 -0700 (PDT) From: dillon.minfei@gmail.com To: mchehab@kernel.org, mchehab+huawei@kernel.org, hverkuil-cisco@xs4all.nl, ezequiel@collabora.com, gnurou@gmail.com, pihsun@chromium.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, gabriel.fernandez@st.com, gabriel.fernandez@foss.st.com Cc: patrice.chotard@foss.st.com, hugues.fruchet@foss.st.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, Dillon Min Subject: [PATCH v4 5/8] media: v4l2-mem2mem: add v4l2_m2m_get_unmapped_area for no-mmu platform Date: Thu, 14 Oct 2021 18:25:03 +0800 Message-Id: <1634207106-7632-6-git-send-email-dillon.minfei@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1634207106-7632-1-git-send-email-dillon.minfei@gmail.com> References: <1634207106-7632-1-git-send-email-dillon.minfei@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211014_032538_743763_41A78947 X-CRM114-Status: GOOD ( 13.62 ) 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: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Dillon Min For platforms without MMU the m2m provides a helper method v4l2_m2m_get_unmapped_area(), The mmap() routines will call this to get a proposed address for the mapping. More detailed information about get_unmapped_area can be found in Documentation/nommu-mmap.txt Signed-off-by: Dillon Min --- v4: no change. drivers/media/v4l2-core/v4l2-mem2mem.c | 21 +++++++++++++++++++++ include/media/v4l2-mem2mem.h | 5 +++++ 2 files changed, 26 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index e7f4bf5bc8dd..e2654b422334 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -966,6 +966,27 @@ int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, } EXPORT_SYMBOL(v4l2_m2m_mmap); +#ifndef CONFIG_MMU +unsigned long v4l2_m2m_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) +{ + struct v4l2_fh *fh = file->private_data; + unsigned long offset = pgoff << PAGE_SHIFT; + struct vb2_queue *vq; + + if (offset < DST_QUEUE_OFF_BASE) { + vq = v4l2_m2m_get_src_vq(fh->m2m_ctx); + } else { + vq = v4l2_m2m_get_dst_vq(fh->m2m_ctx); + pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT); + } + + return vb2_get_unmapped_area(vq, addr, len, pgoff, flags); +} +EXPORT_SYMBOL_GPL(v4l2_m2m_get_unmapped_area); +#endif + #if defined(CONFIG_MEDIA_CONTROLLER) void v4l2_m2m_unregister_media_controller(struct v4l2_m2m_dev *m2m_dev) { diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index 5a91b548ecc0..fdbd5257e020 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -495,6 +495,11 @@ __poll_t v4l2_m2m_poll(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, int v4l2_m2m_mmap(struct file *file, struct v4l2_m2m_ctx *m2m_ctx, struct vm_area_struct *vma); +#ifndef CONFIG_MMU +unsigned long v4l2_m2m_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags); +#endif /** * v4l2_m2m_init() - initialize per-driver m2m data * -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel