From patchwork Tue Dec 17 09:53:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 11297117 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 79BFE17F0 for ; Tue, 17 Dec 2019 09:54:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 579A5207FF for ; Tue, 17 Dec 2019 09:54:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726784AbfLQJym (ORCPT ); Tue, 17 Dec 2019 04:54:42 -0500 Received: from mga05.intel.com ([192.55.52.43]:35646 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726700AbfLQJym (ORCPT ); Tue, 17 Dec 2019 04:54:42 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Dec 2019 01:54:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,325,1571727600"; d="scan'208";a="416769650" Received: from unknown (HELO ahunter-Desktop.fi.intel.com) ([10.237.72.76]) by fmsmga006.fm.intel.com with ESMTP; 17 Dec 2019 01:54:42 -0800 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc Subject: [PATCH 2/2] mmc: sdhci: Add a quirk for broken command queuing Date: Tue, 17 Dec 2019 11:53:49 +0200 Message-Id: <20191217095349.14592-2-adrian.hunter@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191217095349.14592-1-adrian.hunter@intel.com> References: <20191217095349.14592-1-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Command queuing has been reported broken on some systems based on Intel GLK. A separate patch disables command queuing in some cases. This patch adds a quirk for broken command queuing, which enables users with problems to disable command queuing using sdhci module parameters for quirks. Fixes: 8ee82bda230f ("mmc: sdhci-pci: Add CQHCI support for Intel GLK") Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org --- drivers/mmc/host/sdhci.c | 3 +++ drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 3140fe2e5dba..f4540f9892ce 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3769,6 +3769,9 @@ int sdhci_setup_host(struct sdhci_host *host) mmc_hostname(mmc), host->version); } + if (host->quirks & SDHCI_QUIRK_BROKEN_CQE) + mmc->caps2 &= ~MMC_CAP2_CQE; + if (host->quirks & SDHCI_QUIRK_FORCE_DMA) host->flags |= SDHCI_USE_SDMA; else if (!(host->caps & SDHCI_CAN_DO_SDMA)) diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0ed3e0eaef5f..fe83ece6965b 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -409,6 +409,8 @@ struct sdhci_host { #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) /* Controller reports inverted write-protect state */ #define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) +/* Controller has unusable command queue engine */ +#define SDHCI_QUIRK_BROKEN_CQE (1<<17) /* Controller does not like fast PIO transfers */ #define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18) /* Controller does not have a LED */