From nobody Sat Nov 23 22:36:51 2024 Received: from hall.aurel32.net (hall.aurel32.net [195.154.113.88]) (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 50CBD1494DC; Sun, 10 Nov 2024 12:15:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.154.113.88 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731240944; cv=none; b=LZi5UI7JmTMNzOkHPkqSAHw0sX84A0btpoCxy6i1wP1bMybH9fmQaEWGmkteClKVk+1yJ+DbkahmLuichalifaDGjo9tTLfk02gvJQktTmCPU1g1pKTowCvCYJiSMsyWcEISvyqayWqrIzqllbNoUETKKfyNdbiEtVatFXQlfbE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731240944; c=relaxed/simple; bh=v0HN/FED+TT7/gvTHHTC20H9BDfo2Jlpr2rIPHK6WFA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=NAWuKcLcvQ1mGpuNIP2ZMdt+Ptm1elLQ1qZqn/hT3E6eScGbqN/bWKPWC7BLgf3VUljNI++QYxWsOiYN8sP3HKBjnNb2A6ClYJwVsn5MBpKfJlBPLpmUjHVAQ7NypzAby4U7XPe7HWXK5f9TdNOJcnw973vE8TCl+kVp2tfufwY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=aurel32.net; spf=pass smtp.mailfrom=aurel32.net; dkim=pass (2048-bit key) header.d=aurel32.net header.i=@aurel32.net header.b=da4XQwh/; arc=none smtp.client-ip=195.154.113.88 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=aurel32.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aurel32.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=aurel32.net header.i=@aurel32.net header.b="da4XQwh/" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=aurel32.net ; s=202004.hall; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date: Subject:Cc:To:From:Content-Type:From:Reply-To:Subject:Content-ID: Content-Description:In-Reply-To:References:X-Debbugs-Cc; bh=qvK83CYVvOTn6ti8fkhXE4YiU4NnTKoBN9s7aChfpTU=; b=da4XQwh/NWeANyMxlEa8KPZF7h vqRo/ljnFVJSr4rIBLZs+ZVnU7N5tYN7DGxtAFvaNWdO2vMmdkZf4lMKqEHZoTNfmX0HqHJ97Ot5d B3xlCsBuBnrEWUqVIiONDO7FgWrR9SKHtkkyF1mkRYbMEv9lj1/s5HDl77pIK9+MGTjePpKL5iRu0 LVet9FiK1V8+WxmHXLErbC7wKqmmTSAnD//oX3afbU0QHIDsuVVxsLDbGmWG1V1HTKOEYpGDQTRaa Iab8mA5P8P6HpEsqScbOttA3k7vfbR0td0b+wnJw4E4/9QTyZo0MwzP7fJPDQKTeo+0h+QHAPpydZ +9fkQCKw==; Received: from ohm.aurel32.net ([2001:bc8:30d7:111::2] helo=ohm.rr44.fr) by hall.aurel32.net with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tA6Pm-005bzm-05; Sun, 10 Nov 2024 12:47:34 +0100 From: Aurelien Jarno To: linux-kernel@vger.kernel.org, Jaehoon Chung , Ulf Hansson , Sam Protsenko , linux-mmc@vger.kernel.org (open list:SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER) Cc: Ron Economos , Adam Green , Emil Renner Berthing , Aurelien Jarno , stable@vger.kernel.org Subject: [PATCH] Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K" Date: Sun, 10 Nov 2024 12:46:36 +0100 Message-ID: <20241110114700.622372-1-aurelien@aurel32.net> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The commit 8396c793ffdf ("mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K") increased the max_req_size, even for 4K pages, causing various issues: - Panic booting the kernel/rootfs from an SD card on Rockchip RK3566 - Panic booting the kernel/rootfs from an SD card on StarFive JH7100 - "swiotlb buffer is full" and data corruption on StarFive JH7110 At this stage no fix have been found, so it's probably better to just revert the change. This reverts commit 8396c793ffdf28bb8aee7cfe0891080f8cab7890. Cc: stable@vger.kernel.org Cc: Sam Protsenko Fixes: 8396c793ffdf ("mmc: dw_mmc: Fix IDMAC operation with pages bigger th= an 4K") Closes: https://lore.kernel.org/linux-mmc/614692b4-1dbe-31b8-a34d-cb6db1909= bb7@w6rz.net/ Closes: https://lore.kernel.org/linux-mmc/CAC8uq=3DPpnmv98mpa1CrWLawWoPnu5a= btU69v-=3DG-P7ysATQ2Pw@mail.gmail.com/ Signed-off-by: Aurelien Jarno --- drivers/mmc/host/dw_mmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) I have posted a patch to fix the issue, but unfortunately it only fixes the JH7110 case: https://lore.kernel.org/linux-mmc/20241020142931.138277-1-aurelien@aurel32.= net/ diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 41e451235f637..e9f6e4e622901 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -2957,8 +2957,8 @@ static int dw_mci_init_slot(struct dw_mci *host) if (host->use_dma =3D=3D TRANS_MODE_IDMAC) { mmc->max_segs =3D host->ring_size; mmc->max_blk_size =3D 65535; - mmc->max_req_size =3D DW_MCI_DESC_DATA_LENGTH * host->ring_size; - mmc->max_seg_size =3D mmc->max_req_size; + mmc->max_seg_size =3D 0x1000; + mmc->max_req_size =3D mmc->max_seg_size * host->ring_size; mmc->max_blk_count =3D mmc->max_req_size / 512; } else if (host->use_dma =3D=3D TRANS_MODE_EDMAC) { mmc->max_segs =3D 64; --=20 2.45.2