From patchwork Mon Oct 28 09:55:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 1185274 X-Patchwork-Delegate: miquel.raynal@bootlin.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=mxic.com.tw Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Vup7y/re"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 471qGV5ZLJz9sP4 for ; Mon, 28 Oct 2019 20:31:14 +1100 (AEDT) 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: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=vpp+CeFNy4ZeVc3aIoaMM5PxDc+TyBNobPDPwHOtt3o=; b=Vup7y/reJHDTq90G99eTk/bUXX kns5wRTxj63n4BvnymfKi9oOH8GSXisTOn3C9xCWVWCpnjKbDSYJgRd6oLQEyN1vKuhadeKSkU8E7 Y0kjJ99wwWbJNabA0TJryNMPiQbC7o0NvwvSgyiKkZGVvj+AvfMcX0f6v0q0OVS6VRlkCHNjRHJGa nMSwNQjuP4r0KpyDZvLDiUIUem9FHuUZx9Cb0zqZdjCEG+QAKtApJqF7hZOdt8jXA0s/iqORxM+6F G1/lSqs+MCbsyvb2kzMVHTdqIC5wZItRYuod1irIIgG6STZJnRZaNhN+I4xtkBdrmbw8Tw6GMrcvq 3yofQkEA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1Ml-0002rM-NM; Mon, 28 Oct 2019 09:31:11 +0000 Received: from twhmllg4.macronix.com ([211.75.127.132]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iP1Ly-00022M-Iq for linux-mtd@lists.infradead.org; Mon, 28 Oct 2019 09:30:25 +0000 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG4.macronix.com with ESMTP id x9S9TQPO013435; Mon, 28 Oct 2019 17:29:29 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: miquel.raynal@bootlin.com, richard@nod.at, marek.vasut@gmail.com, dwmw2@infradead.org, bbrezillon@kernel.org, computersforpeace@gmail.com, vigneshr@ti.com Subject: [PATCH v2 2/4] mtd: rawnand: Add support Macronix Block Protection function Date: Mon, 28 Oct 2019 17:55:25 +0800 Message-Id: <1572256527-5074-3-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> References: <1572256527-5074-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG4.macronix.com x9S9TQPO013435 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191028_023022_904639_10A6B138 X-CRM114-Status: GOOD ( 11.71 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [211.75.127.132 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 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: juliensu@mxic.com.tw, masonccyang@mxic.com.tw, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Macronix AC series support using SET_FEATURES to change Block Protection and Unprotection. Signed-off-by: Mason Yang --- drivers/mtd/nand/raw/nand_macronix.c | 69 +++++++++++++++++++++++++++++++++--- 1 file changed, 65 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c index 58511ae..13929bf 100644 --- a/drivers/mtd/nand/raw/nand_macronix.c +++ b/drivers/mtd/nand/raw/nand_macronix.c @@ -11,6 +11,10 @@ #define MACRONIX_READ_RETRY_BIT BIT(0) #define MACRONIX_NUM_READ_RETRY_MODES 6 +#define ONFI_FEATURE_ADDR_MXIC_PROTECTION 0xA0 +#define MXIC_BLOCK_PROTECTION_ALL_LOCK 0x38 +#define MXIC_BLOCK_PROTECTION_ALL_UNLOCK 0x0 + struct nand_onfi_vendor_macronix { u8 reserved; u8 reliability_func; @@ -57,7 +61,7 @@ static void macronix_nand_onfi_init(struct nand_chip *chip) * the timings unlike what is declared in the parameter page. Unflag * this feature to avoid unnecessary downturns. */ -static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) +static int macronix_nand_fix_broken_get_timings(struct nand_chip *chip) { unsigned int i; static const char * const broken_get_timings[] = { @@ -78,7 +82,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) }; if (!chip->parameters.supports_set_get_features) - return; + return 0; for (i = 0; i < ARRAY_SIZE(broken_get_timings); i++) { if (!strcmp(broken_get_timings[i], chip->parameters.model)) @@ -86,22 +90,79 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) } if (i == ARRAY_SIZE(broken_get_timings)) - return; + return 0; bitmap_clear(chip->parameters.get_feature_list, ONFI_FEATURE_ADDR_TIMING_MODE, 1); bitmap_clear(chip->parameters.set_feature_list, ONFI_FEATURE_ADDR_TIMING_MODE, 1); + return 1; +} + +/* + * Macronix NAND supports Block Protection by Protectoin(PT) pin; + * active high at power-on which protects the entire chip even the #WP is + * disabled. Lock/unlock protection area can be partition according to + * protection bits, i.e. upper 1/2 locked, upper 1/4 locked and so on. + */ +static int mxic_nand_lock(struct nand_chip *chip, loff_t ofs, uint64_t len) +{ + u8 feature[ONFI_SUBFEATURE_PARAM_LEN]; + int ret; + + feature[0] = MXIC_BLOCK_PROTECTION_ALL_LOCK; + nand_select_target(chip, 0); + ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION, + feature); + nand_deselect_target(chip); + if (ret) + pr_err("%s all blocks failed\n", __func__); + + return ret; +} + +static int mxic_nand_unlock(struct nand_chip *chip, loff_t ofs, uint64_t len) +{ + u8 feature[ONFI_SUBFEATURE_PARAM_LEN]; + int ret; + + feature[0] = MXIC_BLOCK_PROTECTION_ALL_UNLOCK; + nand_select_target(chip, 0); + ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION, + feature); + nand_deselect_target(chip); + if (ret) + pr_err("%s all blocks failed\n", __func__); + + return ret; } +/* + * Macronix NAND AC series support Block Protection by SET_FEATURES + * to lock/unlock blocks. + */ static int macronix_nand_init(struct nand_chip *chip) { + bool blockprotected = false; + if (nand_is_slc(chip)) chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; - macronix_nand_fix_broken_get_timings(chip); + if (macronix_nand_fix_broken_get_timings(chip)) + blockprotected = true; + macronix_nand_onfi_init(chip); + if (blockprotected) { + bitmap_set(chip->parameters.set_feature_list, + ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1); + bitmap_set(chip->parameters.get_feature_list, + ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1); + + chip->_lock = mxic_nand_lock; + chip->_unlock = mxic_nand_unlock; + } + return 0; }