From patchwork Mon Jul 10 12:42:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Jonker X-Patchwork-Id: 13306931 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 684D2EB64DA for ; Mon, 10 Jul 2023 12:42:26 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:Cc:To:Subject: From:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=yRpQA67oqqZSTF6BS/pG3xSRUN5zKE1N1K3bG9AEgNA=; b=IfQBQucTx/SsHv D+IO1GaB6aN6htdT3xDP2HM96KoeHrYaxcUgsm8rl2nqW7XCqvHP5hLe+VIIesT81sjxI9N7+L35r /MHKrHs8XwFVCQMUy1JspHCQdfutfVYHgnEn9xk1TF3KHU3oHprgsOuNQoX2M+y4nqiqfJIkh6sZw h6e6CF209N9tzKuH+cArUG1xhhVTSoZ77HK/wAg1nq619tIPE8XZUgB2sv2uIwws1Oxg83cd2mabM CTat6jhU0IZN6G0gF8d/3I4oEUIuNPnxcFNqtCmIW2j/Z7LSOAdc/H486Z4mdHFMjAgnaXOfraLUx lW7xodkuHwM3RydOyNCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qIqDd-00BdAP-2G; Mon, 10 Jul 2023 12:42:21 +0000 Received: from mail-wm1-x332.google.com ([2a00:1450:4864:20::332]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qIqDZ-00Bd8x-0L; Mon, 10 Jul 2023 12:42:18 +0000 Received: by mail-wm1-x332.google.com with SMTP id 5b1f17b1804b1-3fbab0d0b88so42098725e9.0; Mon, 10 Jul 2023 05:42:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1688992935; x=1691584935; h=content-transfer-encoding:in-reply-to:content-language:references :cc:to:subject:from:user-agent:mime-version:date:message-id:from:to :cc:subject:date:message-id:reply-to; bh=pBd1Lu1Lca2z3up8dzZ0bUwRcOK91MQPeC1b10XMPe4=; b=jMayj+6FlyzWisJa44u1vRVzWTqzkkr+hAgEqmGIvhditBR6u9AfV21PT8niYQk2WU 9UL48NjJw19HLqdX83VpGrvCYR8rcxLqauGy0ioZpWd9BVq7GV99DrfYCGBVjLoEj5X7 v+l1Z3m0B4PK/tTI80IYslI/+sWfb1hyVraBfwnwtBErzZyh1+WYjxSwIKKFLj8oHR2R e6+tmLxj6YBn1G0B24s1RiNZEn3XrG0AMpAgxxOhBZKW6hJo0YHsW5SMwiP1ZKXcLNC7 ZLjqoI3KjmYJOBdQxlevWgF8QzeU37YSmnoch4wmSbV7jmuFK+atJdJ6ziy8HJtC1SiT KNbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688992935; x=1691584935; h=content-transfer-encoding:in-reply-to:content-language:references :cc:to:subject:from:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=pBd1Lu1Lca2z3up8dzZ0bUwRcOK91MQPeC1b10XMPe4=; b=A6I+9AoyAhiOBDM47aggshIks88Mf90zv2NsPsGRxOk4thgBbQQ5bIODFaa06u2adc kJwYbYkcE+OVMDjfV9GPQZOZFihI2hwo/QEcDoV7A8oGVtLTa827ZVdJISPoiJbVtzvP ns3KA9kNtocsP4UGIZ0h0kjnUDDWkUuRLE9On0JrutUfGLMl8+NyH/fluaHJ7D4zGVTc g/xolKjlpz3Qv4WUk6Io1OHX/5v1bCSq3eTLfbwGWKQ2xuwwZudwEdJvX70Kqmd2Trjz dXhzoa/oD8ocSntXdtldXUHlY7AnGFoudYSA7MnLoSgj4jDB6iTvyBvjbtfoEKiVRkSa GM7g== X-Gm-Message-State: ABy/qLYaegJRU1wPl+mubmb61Pth6KCONdypgjCJozb4DTX0+KXaa+I0 YJkVW1bWgew/Omapxq78i/A= X-Google-Smtp-Source: APBJJlHsd3OjEmoDoMtV1lj2Xvfy9YGaqMv5Pv0DobeXvA2Ss7TEnthuzrVy/NImHSoytpm3lJI96g== X-Received: by 2002:a5d:6e11:0:b0:315:a155:5294 with SMTP id h17-20020a5d6e11000000b00315a1555294mr851620wrz.34.1688992934466; Mon, 10 Jul 2023 05:42:14 -0700 (PDT) Received: from [192.168.2.1] (81-204-249-205.fixed.kpn.net. [81.204.249.205]) by smtp.gmail.com with ESMTPSA id u12-20020adfdd4c000000b0030ab5ebefa8sm11582335wrm.46.2023.07.10.05.42.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 10 Jul 2023 05:42:14 -0700 (PDT) Message-ID: <876e58f3-e3c2-6295-9137-312e686026bb@gmail.com> Date: Mon, 10 Jul 2023 14:42:13 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 From: Johan Jonker Subject: [PATCH v4 1/3] mtd: rawnand: rockchip: fix oobfree offset and description To: miquel.raynal@bootlin.com Cc: richard@nod.at, vigneshr@ti.com, heiko@sntech.de, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, yifeng.zhao@rock-chips.com References: <08f694df-4c1d-f059-43fd-f1aee678062c@gmail.com> Content-Language: en-US In-Reply-To: <08f694df-4c1d-f059-43fd-f1aee678062c@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230710_054217_151237_FFEC5F72 X-CRM114-Status: GOOD ( 16.08 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Rockchip boot blocks are written per 4 x 512 byte sectors per page. Each page with boot blocks must have a page address (PA) pointer in OOB to the next page. The currently advertised free OOB area starts at offset 6, like if 4 PA bytes were located right after the BBM. This is wrong as the PA bytes are located right before the ECC bytes. Fix the layout by allowing access to all bytes between the BBM and the PA bytes instead of reserving 4 bytes right after the BBM. This change breaks existing jffs2 users. Fixes: 058e0e847d54 ("mtd: rawnand: rockchip: NFC driver for RK3308, RK2928 and others") Signed-off-by: Johan Jonker --- Changed V4: Reduce subject size Add 'Fixes:' tag Reword Changed V3: Change prefixes Reword State break existing users. --- Example: Wrong free OOB offset starts at OOB6: oob_region->offset = NFC_SYS_DATA_SIZE + 2; = 4 + 2 = 6 oob_region->length = rknand->metadata_size - NFC_SYS_DATA_SIZE - 2; = 32 - 4 - 2 = 26 Together with this length above it overlaps a reserved space for the boot blocks Page Address(PA) chip->oob_poi buffer layout for 8 steps: BBM0 BBM1 OOB2 OOB3 | OOB4 OOB5 OOB6 OOB7 OOB8 OOB9 OOB10 OOB11 | OOB12 OOB13 OOB15 OOB15 OOB16 OOB17 OOB18 OOB19 | OOB20 OOB21 OOB22 OOB23 OOB24 OOB25 OOB26 OOB27 | PA0 PA1 PA2 PA3 ECC0 ECC1 ECC2 ECC3 | ... ... ... ... Fix by new offset at OOB2: oob_region->offset = 2; The full range of free OOB with 8 steps runs from OOB2 till/including OOB27. --- drivers/mtd/nand/raw/rockchip-nand-controller.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) -- 2.30.2 diff --git a/drivers/mtd/nand/raw/rockchip-nand-controller.c b/drivers/mtd/nand/raw/rockchip-nand-controller.c index 2312e27362cb..37fc07ba57aa 100644 --- a/drivers/mtd/nand/raw/rockchip-nand-controller.c +++ b/drivers/mtd/nand/raw/rockchip-nand-controller.c @@ -562,9 +562,10 @@ static int rk_nfc_write_page_raw(struct nand_chip *chip, const u8 *buf, * BBM OOB1 OOB2 OOB3 |......| PA0 PA1 PA2 PA3 * * The rk_nfc_ooblayout_free() function already has reserved - * these 4 bytes with: + * these 4 bytes together with 2 bytes for BBM + * by reducing it's length: * - * oob_region->offset = NFC_SYS_DATA_SIZE + 2; + * oob_region->length = rknand->metadata_size - NFC_SYS_DATA_SIZE - 2; */ if (!i) memcpy(rk_nfc_oob_ptr(chip, i), @@ -933,12 +934,8 @@ static int rk_nfc_ooblayout_free(struct mtd_info *mtd, int section, if (section) return -ERANGE; - /* - * The beginning of the OOB area stores the reserved data for the NFC, - * the size of the reserved data is NFC_SYS_DATA_SIZE bytes. - */ oob_region->length = rknand->metadata_size - NFC_SYS_DATA_SIZE - 2; - oob_region->offset = NFC_SYS_DATA_SIZE + 2; + oob_region->offset = 2; return 0; }