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=-13.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 4A952C4727D for ; Tue, 29 Sep 2020 23:04:54 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 AFB3320897 for ; Tue, 29 Sep 2020 23:04:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="pdwQxPLZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AFB3320897 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com 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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: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:List-Owner; bh=TZIjMbiJlqY3rnOD9okkZTXWwX34jhCDRcCYglAhE0E=; b=pdwQxPLZT4OrekQauwXX/LjsI 4ma4QEvBP4zSijI8OJd2MfKWKD9IMCnlShla/U+28JUA5s2487j8ta1b9dRSplZ/IQPom/q57y9Qd nrhKv5fe7fBPrPcszEOX4jn/zwR5id9FBiyM8fcaoaH668uLFjh+poJJ61LhznA8DMfUvEH/zrx9+ obBVCygcmaQ5PVZKlM7CG6a+DlkNcoA2yueoxnemcaod2u3dF2P4R28PjUzmInYfjjaZraSneVJWN x2Gy2L86O0mHD+BSakxhAIPACVMErKlYGIzjiijzcUw8PWWQCT9jtBF0oa7xRluGpgbisB/OFnLnW m1IPN6h3A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNOfP-0002UQ-Q5; Tue, 29 Sep 2020 23:04:15 +0000 Received: from relay12.mail.gandi.net ([217.70.178.232]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNOd4-0001Hb-KI for linux-mtd@lists.infradead.org; Tue, 29 Sep 2020 23:01:55 +0000 Received: from localhost.localdomain (unknown [91.224.148.103]) (Authenticated sender: miquel.raynal@bootlin.com) by relay12.mail.gandi.net (Postfix) with ESMTPSA id CE52920001A; Tue, 29 Sep 2020 23:01:48 +0000 (UTC) From: Miquel Raynal To: Richard Weinberger , Vignesh Raghavendra , Tudor Ambarus , Subject: [PATCH 20/20] mtd: nand: Let software ECC engines be retrieved from the NAND core Date: Wed, 30 Sep 2020 01:01:24 +0200 Message-Id: <20200929230124.31491-21-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200929230124.31491-1-miquel.raynal@bootlin.com> References: <20200929230124.31491-1-miquel.raynal@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200929_190150_825880_ADF44814 X-CRM114-Status: GOOD ( 11.28 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Julien Su , ycllin@mxic.com.tw, Thomas Petazzoni , Miquel Raynal 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 Before making use of the ECC engines, we must retrieve them. Add the boilerplate for the ones already available: software engines (Hamming and BCH). Signed-off-by: Miquel Raynal --- drivers/mtd/nand/ecc.c | 20 ++++++++++++++++++++ include/linux/mtd/nand.h | 1 + 2 files changed, 21 insertions(+) diff --git a/drivers/mtd/nand/ecc.c b/drivers/mtd/nand/ecc.c index 86bbc4ecc58a..a85269b03b2f 100644 --- a/drivers/mtd/nand/ecc.c +++ b/drivers/mtd/nand/ecc.c @@ -585,6 +585,26 @@ void nand_ecc_restore_req(struct nand_ecc_req_tweak_ctx *ctx, } EXPORT_SYMBOL_GPL(nand_ecc_restore_req); +struct nand_ecc_engine *nand_ecc_get_sw_engine(struct nand_device *nand) +{ + unsigned int algo = nand->ecc.user_conf.algo; + + if (algo == NAND_ECC_ALGO_UNKNOWN) + algo = nand->ecc.defaults.algo; + + switch (algo) { + case NAND_ECC_ALGO_HAMMING: + return nand_ecc_sw_hamming_get_engine(); + case NAND_ECC_ALGO_BCH: + return nand_ecc_sw_bch_get_engine(); + default: + break; + } + + return NULL; +} +EXPORT_SYMBOL(nand_ecc_get_sw_engine); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Miquel Raynal "); MODULE_DESCRIPTION("Generic ECC engine"); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 3616fa27eaa1..f78f61c9a9ee 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -277,6 +277,7 @@ int nand_ecc_prepare_io_req(struct nand_device *nand, int nand_ecc_finish_io_req(struct nand_device *nand, struct nand_page_io_req *req); bool nand_ecc_is_strong_enough(struct nand_device *nand); +struct nand_ecc_engine *nand_ecc_get_sw_engine(struct nand_device *nand); #if IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING) struct nand_ecc_engine *nand_ecc_sw_hamming_get_engine(void); -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/