From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (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 5353218D65C; Mon, 7 Jul 2025 15:24:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751901896; cv=none; b=ppvATHe+CE6spuI9RwlLofu5HFdMqRDK7DqwXBKVp+zXn9g21CYuPk7r6WQoyLNCLr1ZBU9IivwUPbQZT+JKbDiSC+4up+dcuaj39/ZZOZi3VcNLTxadENfAE3y/ufSz3JzLJYQV+US0UJBob2SPun+X/XBEuVxuEKGBbSDD7Nw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751901896; c=relaxed/simple; bh=HDJuUsTdRx4FRdl3hzU7RUngWSLdrRf0zrs+Cx2N+7c=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=O7Ng6rSp99/loIxbtEgzUzlKBp3kVsAqpRGYCbWxO+5H0b0ih3XHwz+cPQkgHQgqQ4KqGyD87Mja9eq0T1eRDbhhSNMI82yUBVNfYZ1zkReHb1w0M7P6QvqDxLqjlmiM9IwGngRkA6FFdvuJcs5Vdw0g0Qunu829OA09lRt4F6s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=LrYJOgF2; arc=none smtp.client-ip=217.70.183.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="LrYJOgF2" Received: by mail.gandi.net (Postfix) with ESMTPSA id 3C69F43B21; Mon, 7 Jul 2025 15:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1751901892; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=aqB9+6rqapT4VBuzNnKX6VIbAtAmBQKcp+EL4OWFilI=; b=LrYJOgF24pGARNIAD8FIn/U0mOkNmbq6tM/HEN4k/HVLOxfbxIed9LlAmQjz/YcZdEeXjV 9gmBnZGeX8UfCQ1h5mKfVQZiUcr8Kf1nBDj5UyaDxSVP0wN4ZoA3CNCWutTR9SIuYYDO21 yLgQlMYpGz19L44YJJQ4UQOuAF6FYzfd2pk5Ym7SsfnDnf6basOEWV1P3h429Np5WXY+jA 1YkUW9/wI2/fcYiYrNmhqAg6qSzYuzLviY3bIiuxDBOR3TWEwLXrc5AjbfEZEa5M93nsFm 7fH8K9avf/upzWK1RtlMy9hlyFHF3kt/FiqKNJTEjCtXWPCgeeGPGrAC6Hh8wg== From: =?UTF-8?q?Beno=C3=AEt=20Monin?= To: Ulf Hansson , Adrian Hunter Cc: =?UTF-8?q?Beno=C3=AEt=20Monin?= , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Vladimir Kondratiev , Tawfik Bayouk , Gregory CLEMENT , "Thomas Petazzoni" Subject: [PATCH v2 0/4] mmc: introduce multi-block read gap tuning Date: Mon, 7 Jul 2025 17:24:32 +0200 Message-ID: X-Mailer: git-send-email 2.50.0 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgdefvdduhecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkofggtgfgsehtkeertdertdejnecuhfhrohhmpeeuvghnohpfthcuofhonhhinhcuoegsvghnohhithdrmhhonhhinhessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepkeegffeutedvvdduvefgkeehueefueeuvdeigffgteegheefuddtfeegvdefteeinecuffhomhgrihhnpehkvghrnhgvlhdrohhrghenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeduheefjeemfhefheemleefiegumegvledvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvrgdtudemtggsudegmeehheeimeejrgdttdemudehfeejmehffeehmeelfeeiugemvgelvdehpdhhvghlohepfhhrrghmvgifohhrkhdpmhgrihhlfhhrohhmpegsvghnohhithdrmhhonhhinhessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepledprhgtphhtthhopehulhhfrdhhrghnshhsohhnsehlihhnrghrohdrohhrghdprhgtphhtthhopegrughrihgrnhdrhhhunhhtvghrsehinhhtvghlrdgtohhmpdhrtghpthhtohepsggvnhhoihhtrdhmohhnihhnsegsohhothhlihhnr dgtohhmpdhrtghpthhtoheplhhinhhugidqmhhmtgesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehvlhgrughimhhirhdrkhhonhgurhgrthhivghvsehmohgsihhlvgihvgdrtghomhdprhgtphhtthhopehtrgiffhhikhdrsggrhihouhhksehmohgsihhlvgihvgdrtghomhdprhgtphhtthhopehgrhgvghhorhihrdgtlhgvmhgvnhhtsegsohhothhlihhnrdgtohhm X-GND-Sasl: benoit.monin@bootlin.com This patchset implements the multi-block read gap tuning for the SDHCI cadence driver. To do so, a generic function (mmc_read_blocks) to read blocks from the MMC is added to mmc_ops in the first patch. The second patch is the implementation proper in the driver which try to do a multi-block read and increase the gap delay until it succeeds. The read gap is done by the controller when its internal fifo is full when reading multiple blocks. That is why we cannot use mmc_get_ext_csd to do the tuning since it only read one block. The implementation of the mmc_read_blocks also brings a helper to check for CMD23 support by MMC card, similar to mmc_host_can_cmd23 for host, so the last two patches uses it instead of local implementation in mmc_test.c and block.c. v1 -> v2: Split the code between the core and the driver by adding a generic function to read blocks from the MMC. Link to v1: https://lore.kernel.org/linux-mmc/2a43386ffef4012530ca2421ad81ad21c36c8a25.1750943549.git.benoit.monin@bootlin.com/ Benoît Monin (4): mmc: core: add mmc_read_blocks to mmc_ops mmc: sdhci-cadence: implement multi-block read gap tuning mmc: mmc_test: use mmc_card_can_cmd23 mmc: block: use mmc_card_can_cmd23 drivers/mmc/core/block.c | 12 ++---- drivers/mmc/core/card.h | 10 +++++ drivers/mmc/core/mmc_ops.c | 69 ++++++++++++++++++++++++++++++ drivers/mmc/core/mmc_test.c | 9 +--- drivers/mmc/host/sdhci-cadence.c | 72 +++++++++++++++++++++++++++++++- include/linux/mmc/host.h | 3 ++ 6 files changed, 157 insertions(+), 18 deletions(-)