From patchwork Wed Oct 26 19:42:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Norris X-Patchwork-Id: 619114 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD6EEECDFA1 for ; Wed, 26 Oct 2022 19:43:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234905AbiJZTng (ORCPT ); Wed, 26 Oct 2022 15:43:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235100AbiJZTm6 (ORCPT ); Wed, 26 Oct 2022 15:42:58 -0400 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20782108245 for ; Wed, 26 Oct 2022 12:42:40 -0700 (PDT) Received: by mail-pl1-x62d.google.com with SMTP id j12so15198284plj.5 for ; Wed, 26 Oct 2022 12:42:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Fb+b4UKJ1KFBJbCRol+gACElv5iiq7jjhJ1g0l5c5FA=; b=hRt2H2uD+wLrwvXTK0JSNIPjW4+1oJFPvSJZ/fA6Of0/Bd3NncRF9lJd0QMEKb+jA8 tR2cfNMTkEpSuxO3w7B2BEY2iyQbOuw+XK/X0lgSDBOl61Htz/8xEX99DGyD3PlhAnxi zZ4KPXpdzi29DuB1ShNOgGOtr7Wl5nabY+T1U= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Fb+b4UKJ1KFBJbCRol+gACElv5iiq7jjhJ1g0l5c5FA=; b=IePqCSmxxSp1Li7RIfkWbkumZlXxTBS7aA9s59a09l2xhRUjzgry9533XKVvhO3AtG zjeeeaXeSf2Yt2CvOG13ziDy/6aaIYYaDpdZ6eWqZ4TSa2fjsPIB+DcgEqarqOMtMjAc Zq9+FGk6AdmepDpLAFfUGBdjuzz7Ta2PNxtH4KRUy0/W7FE8BaKJLIy54TvLhGgLPdL6 JaLMu8PKkjbQbdV2nNJ8M9MfY91EOS6DymDzAd3dofnnkiV0BqvHmyKDp5Y7RUHmkVJg Gc926qZc3HaJafeAOKwdyAPe9EOWijs3CrB6ZUKi/reVuWTZtGbwv3kWP+IgZisv5Vqf O+/w== X-Gm-Message-State: ACrzQf0JkMOiu2Gx66QEix+LDSC69To9NKxLOemc0j5WfiD/l507/iMS 8RDlkiBNUN8BVV8LrMCbZC6D+Q== X-Google-Smtp-Source: AMsMyM5EYvlE+qWcSFNr/Wmi9gu+0BErDUUQgt96JMzf6TmlgWUsQfqorUCkgXi+8DbCGGYaF8Lu4g== X-Received: by 2002:a17:90a:428e:b0:205:d5fe:e0b3 with SMTP id p14-20020a17090a428e00b00205d5fee0b3mr5870742pjg.33.1666813359968; Wed, 26 Oct 2022 12:42:39 -0700 (PDT) Received: from localhost ([2620:15c:9d:2:c9e3:74f3:6b2b:135]) by smtp.gmail.com with UTF8SMTPSA id e10-20020a170902784a00b001811a197797sm3242401pln.194.2022.10.26.12.42.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Oct 2022 12:42:39 -0700 (PDT) From: Brian Norris To: Ulf Hansson Cc: Shawn Guo , linux-mmc@vger.kernel.org, Adrian Hunter , Shawn Lin , Michal Simek , Sascha Hauer , Bjorn Andersson , Thierry Reding , linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Broadcom internal kernel review list , Jonathan Hunter , Andy Gross , Pengutronix Kernel Team , linux-kernel@vger.kernel.org, Konrad Dybcio , Al Cooper , Fabio Estevam , Florian Fainelli , NXP Linux Team , Haibo Chen , Sowjanya Komatineni , Brian Norris Subject: [PATCH v4 5/7] mmc: sdhci-tegra: Fix SDHCI_RESET_ALL for CQHCI Date: Wed, 26 Oct 2022 12:42:07 -0700 Message-Id: <20221026124150.v4.5.I418c9eaaf754880fcd2698113e8c3ef821a944d7@changeid> X-Mailer: git-send-email 2.38.0.135.g90850a2211-goog In-Reply-To: <20221026194209.3758834-1-briannorris@chromium.org> References: <20221026194209.3758834-1-briannorris@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org [[ NOTE: this is completely untested by the author, but included solely because, as noted in commit df57d73276b8 ("mmc: sdhci-pci: Fix SDHCI_RESET_ALL for CQHCI for Intel GLK-based controllers"), "other drivers using CQHCI might benefit from a similar change, if they also have CQHCI reset by SDHCI_RESET_ALL." We've now seen the same bug on at least MSM, Arasan, and Intel hardware. ]] SDHCI_RESET_ALL resets will reset the hardware CQE state, but we aren't tracking that properly in software. When out of sync, we may trigger various timeouts. It's not typical to perform resets while CQE is enabled, but this may occur in some suspend or error recovery scenarios. Include this fix by way of the new sdhci_and_cqhci_reset() helper. This patch depends on (and should not compile without) the patch entitled "mmc: cqhci: Provide helper for resetting both SDHCI and CQHCI". Fixes: 3c4019f97978 ("mmc: tegra: HW Command Queue Support for Tegra SDMMC") Signed-off-by: Brian Norris Acked-by: Adrian Hunter --- Changes in v4: - Add dependency notes - Add Adrian's Ack Changes in v3: - Use new SDHCI+CQHCI helper Changes in v2: - Drop unnecessary 'enable_hwcq' check drivers/mmc/host/sdhci-tegra.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 413925bce0ca..c71000a07656 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -28,6 +28,7 @@ #include +#include "sdhci-cqhci.h" #include "sdhci-pltfm.h" #include "cqhci.h" @@ -367,7 +368,7 @@ static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask) const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; u32 misc_ctrl, clk_ctrl, pad_ctrl; - sdhci_reset(host, mask); + sdhci_and_cqhci_reset(host, mask); if (!(mask & SDHCI_RESET_ALL)) return;