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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 696AFC04AB4 for ; Fri, 17 May 2019 06:32:45 +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 2E65420833 for ; Fri, 17 May 2019 06:32:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CmglFaad" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2E65420833 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=f1xMhBPzfyhVhJ8aI/YvrpahAipOYqUsTRpqK76m6KI=; b=Cmg lFaade2VQETiRAnK7M2olroM4HgYkwqN1PP5vBs4gf7gqTVTmsggsKiKub1xBjfUtSTepoW4nwytP jrmxZ1gIPgB4eoYNakyLvqkGIWIcl+9adYLxuSYU5cFB0I4u02MOgPAcKjGVt+HnuXRKLQVRc4L3N rByTec2Mmu4RvWU2n1xail8wZayO7MBlXwAUMWEVoXrQZ2228WFi3eqG5OLi3u3xK76g/DUdItRHj 6rhPQAsKUSqWc9404nW3Qt8VZcPjCoi+E80WoMszK4tAopOLTO5YvrEVeHeUIUDxNCxwzpJVVFerM mqXM9HYBtG0tLji2C0bRbnGZBEq4V+A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hRWQ6-0002UQ-IK; Fri, 17 May 2019 06:32:42 +0000 Received: from [122.147.135.201] (helo=TWHMLLG3.macronix.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hRWQ3-0002St-2x for linux-mtd@lists.infradead.org; Fri, 17 May 2019 06:32:40 +0000 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG3.macronix.com with ESMTP id x4H6Vf60076140; Fri, 17 May 2019 14:31:41 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: bbrezillon@kernel.org, marek.vasut@gmail.com, linux-kernel@vger.kernel.org, miquel.raynal@bootlin.com, richard@nod.at, dwmw2@infradead.org, computersforpeace@gmail.com, linux-mtd@lists.infradead.org, vigneshr@ti.com, frieder.schrempf@kontron.de Subject: [PATCH v2] mtd: rawnand: Add Macronix NAND read retry support Date: Fri, 17 May 2019 14:53:21 +0800 Message-Id: <1558076001-29579-1-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 X-MAIL: TWHMLLG3.macronix.com x4H6Vf60076140 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190516_233239_399106_880AFF17 X-CRM114-Status: UNSURE ( 9.93 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juliensu@mxic.com.tw, masonccyang@mxic.com.tw, zhengxunli@mxic.com.tw MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Add support for Macronix NAND read retry. Macronix NANDs support specific read operation for data recovery, which can be enabled/disabled with a SET/GET_FEATURE. Driver checks byte 167 of Vendor Blocks in ONFI parameter page table to see if this high-reliability function is supported. Signed-off-by: Mason Yang --- drivers/mtd/nand/raw/nand_macronix.c | 57 ++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c index e287e71..1a4dc92 100644 --- a/drivers/mtd/nand/raw/nand_macronix.c +++ b/drivers/mtd/nand/raw/nand_macronix.c @@ -17,6 +17,62 @@ #include "internals.h" +#define MACRONIX_READ_RETRY_BIT BIT(0) +#define MACRONIX_READ_RETRY_MODE 6 + +struct nand_onfi_vendor_macronix { + u8 reserved[1]; + u8 reliability_func; +} __packed; + +/* + * Macronix NANDs support using SET/GET_FEATURES to enter/exit read retry mode + */ +static int macronix_nand_setup_read_retry(struct nand_chip *chip, int mode) +{ + u8 feature[ONFI_SUBFEATURE_PARAM_LEN]; + int ret, feature_addr = ONFI_FEATURE_ADDR_READ_RETRY; + + if (chip->parameters.supports_set_get_features && + test_bit(feature_addr, chip->parameters.set_feature_list) && + test_bit(feature_addr, chip->parameters.get_feature_list)) { + feature[0] = mode; + ret = nand_set_features(chip, feature_addr, feature); + if (ret) + pr_err("Failed to set read retry moded:%d\n", mode); + + ret = nand_get_features(chip, feature_addr, feature); + if (ret || feature[0] != mode) + pr_err("Failed to verify read retry moded:%d(%d)\n", + mode, feature[0]); + } + + return ret; +} + +static void macronix_nand_onfi_init(struct nand_chip *chip) +{ + struct nand_parameters *p = &chip->parameters; + struct nand_onfi_vendor_macronix *mxic; + + if (!p->onfi) + return; + + mxic = (struct nand_onfi_vendor_macronix *)p->onfi->vendor; + if ((mxic->reliability_func & MACRONIX_READ_RETRY_BIT) == 0) + return; + + chip->read_retries = MACRONIX_READ_RETRY_MODE; + chip->setup_read_retry = macronix_nand_setup_read_retry; + + if (p->supports_set_get_features) { + bitmap_set(p->set_feature_list, + ONFI_FEATURE_ADDR_READ_RETRY, 1); + bitmap_set(p->get_feature_list, + ONFI_FEATURE_ADDR_READ_RETRY, 1); + } +} + /* * Macronix AC series does not support using SET/GET_FEATURES to change * the timings unlike what is declared in the parameter page. Unflag @@ -65,6 +121,7 @@ static int macronix_nand_init(struct nand_chip *chip) chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; macronix_nand_fix_broken_get_timings(chip); + macronix_nand_onfi_init(chip); return 0; } -- 1.9.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/