From patchwork Sun Sep 8 10:20:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avri Altman X-Patchwork-Id: 13795400 Received: from esa4.hgst.iphmx.com (esa4.hgst.iphmx.com [216.71.154.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 512626F06B for ; Sun, 8 Sep 2024 10:22:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.71.154.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725790957; cv=none; b=EW9+oHSu8WmO7SdVZrWp+x0/vGXUrhqPXcStU3WMRlUEzwkqznDF2ybfOXmjNHBJYuGtcNQE1CEYyMx5pSdSS/rIhDUpksknHqf6T2nHxmEAGxKh1In/BTKKzvsNS2b1bjcgvXmozuAehGktfWRcmb7xVM/oSSj8iRZV9vJ8KZA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725790957; c=relaxed/simple; bh=1JaQc5SS+ZS0y2N+fbsd3RSuH7ReLEBD3nAnCl1NFFA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Xakdr4iGTCicf4PG6btnk9icKlYlulcTRBrlrv+8VKvur0ipGfk6pX0n44mdJ6qs5T2nAZEyn0RZ9ObRNyVz9yXsSwT0b1crsbkoK4HQsKZikmOvDnb+TzMG09Pj7AGQPQtfD61N1LyJIHdRAmuhtN/SVACL43RHHSWeamq/BLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wdc.com; spf=pass smtp.mailfrom=wdc.com; dkim=pass (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b=h4u0Hixx; arc=none smtp.client-ip=216.71.154.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=wdc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wdc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="h4u0Hixx" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1725790955; x=1757326955; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1JaQc5SS+ZS0y2N+fbsd3RSuH7ReLEBD3nAnCl1NFFA=; b=h4u0HixxuH2/KTxlIsBTVxBeqyleuHBagacykqztHPx1hFuBHSyy29Ce ZtziGp8FpScki8QJ59WC4B2VU3px+Tj44LruJuHorO3413OAdrYuyFuEA eMt3ti43bcjHbjoD8+NMnHgYZfupptZ6iwBC9PkuF1qo93lGhqV8zP5Gn fu5gayBNF3qFwAtXW7OTtTZQ8Y9+nF+sbPOsUeIM71rbMT2Xsdvp8m36S QBDPLjPUUQSFvGoQaAz//Rz65XZ9u09OPTeJWNrVkit+Oq1G+XvPZQeuc 8+qjlDut+rIspU+0Bnrl50yq/TRvJzPYk2EDwjklmDnSNeq1W/BKyVBi3 g==; X-CSE-ConnectionGUID: mDasXLdJSEiJRAiWRtktIA== X-CSE-MsgGUID: WGI05CZbRlG00X2pWeUyEA== X-IronPort-AV: E=Sophos;i="6.10,212,1719849600"; d="scan'208";a="25553885" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 08 Sep 2024 18:22:35 +0800 IronPort-SDR: 66dd6e0f_IfaT6Xx2MYWmH0+gYRpc9hv4ZttYgh0xt8VtB35Gb9Erg3K /nyUGq2oFrgT19F0tUeHBS/HvNsgHrecsHzK4ow== Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 08 Sep 2024 02:27:44 -0700 WDCIronportException: Internal Received: from avri-office.ad.shared (HELO avri-office.sdcorp.global.sandisk.com) ([10.45.31.142]) by uls-op-cesaip02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 08 Sep 2024 03:22:33 -0700 From: Avri Altman To: Ulf Hansson , linux-mmc@vger.kernel.org Cc: Adrian Hunter , Ricky WU , Shawn Lin , Christian Loehle , Avri Altman Subject: [PATCH v7 07/10] mmc: core: Adjust ACMD22 to SDUC Date: Sun, 8 Sep 2024 13:20:15 +0300 Message-Id: <20240908102018.3711527-8-avri.altman@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240908102018.3711527-1-avri.altman@wdc.com> References: <20240908102018.3711527-1-avri.altman@wdc.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 ACMD22 is used to verify the previously write operation. Normally, it returns the number of written sectors as u32. SDUC, however, returns it as u64. This is not a superfluous requirement, because SDUC writes may exceeds 2TB. For Linux mmc however, the previously write operation could not be more than the block layer limits, thus we make room for a u64 and cast the returning value to u32. Reviewed-by: Adrian Hunter Signed-off-by: Avri Altman --- drivers/mmc/core/block.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 308d7c1dd0b0..74b56198ce42 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -50,6 +50,7 @@ #include #include +#include #include "queue.h" #include "block.h" @@ -993,11 +994,10 @@ static int mmc_sd_num_wr_blocks(struct mmc_card *card, u32 *written_blocks) int err; u32 result; __be32 *blocks; - + u8 resp_sz = mmc_card_ult_capacity(card) ? 8 : 4; struct mmc_request mrq = {}; struct mmc_command cmd = {}; struct mmc_data data = {}; - struct scatterlist sg; err = mmc_app_cmd(card->host, card); @@ -1008,7 +1008,7 @@ static int mmc_sd_num_wr_blocks(struct mmc_card *card, u32 *written_blocks) cmd.arg = 0; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; - data.blksz = 4; + data.blksz = resp_sz; data.blocks = 1; data.flags = MMC_DATA_READ; data.sg = &sg; @@ -1018,15 +1018,27 @@ static int mmc_sd_num_wr_blocks(struct mmc_card *card, u32 *written_blocks) mrq.cmd = &cmd; mrq.data = &data; - blocks = kmalloc(4, GFP_KERNEL); + blocks = kmalloc(resp_sz, GFP_KERNEL); if (!blocks) return -ENOMEM; - sg_init_one(&sg, blocks, 4); + sg_init_one(&sg, blocks, resp_sz); mmc_wait_for_req(card->host, &mrq); - result = ntohl(*blocks); + if (mmc_card_ult_capacity(card)) { + /* + * Normally, ACMD22 returns the number of written sectors as + * u32. SDUC, however, returns it as u64. This is not a + * superfluous requirement, because SDUC writes may exceed 2TB. + * For Linux mmc however, the previously write operation could + * not be more than the block layer limits, thus just make room + * for a u64 and cast the response back to u32. + */ + result = clamp_val(get_unaligned_be64(blocks), 0, UINT_MAX); + } else { + result = ntohl(*blocks); + } kfree(blocks); if (cmd.error || data.error)