From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C54BC143895; Thu, 13 Jun 2024 11:49:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718279348; cv=none; b=KkXZ9Wwpr2MWqSYlzC9/qPkpZ8TUAg4hztVsNFUPeyHrbXZMDDPnr0MKxcHva1IaVpU41b0YbYHUEBIPASvbj3ga1f3J7gZZoxlX9yh/niRqnXEBNhd6GPcAVX8JvpEJdvGi6N+CsLz24m0VHgizRnOXdO0vRtZ+uQJaGsypCDw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718279348; c=relaxed/simple; bh=LjrrmZzi9+6bORYvxd/CJ94CII6rWwvOgL0rYvFEdFY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RdBaIyRySjEPtqZDsNEUSKlr1S2wErUrVYfft0g4xIa6yHsnNYejPhtr9O0EWs8DMNhvTJiuCaPrGy0myfX08OLMBX6KeDqzSjT0RGedWqXMv6ik56HdrCWrwlB3m1ORQzoF4qN0os0O8BQInxynl8jYcFflAuD1yhBTP1ObIsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=rCHALCRS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="rCHALCRS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E769C2BBFC; Thu, 13 Jun 2024 11:49:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718279348; bh=LjrrmZzi9+6bORYvxd/CJ94CII6rWwvOgL0rYvFEdFY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rCHALCRS/rcSnhcHoPfUoI2DNrSERAXehvazA540jNNI2ww4NgrjJBY/jU26Yx9O+ yvuGyNdsdsD7Vg95IdL8Zg4hBDT2BcdtD6h1BWmmdqMIh3365pvNEBRvIY3fM3u0/B U63BYbpWLM76n5LlDSyCndGkT7V9Rmu78fJMqFCw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hans de Goede , Adrian Hunter , Ulf Hansson Subject: [PATCH 6.9 045/157] mmc: sdhci: Add support for "Tuning Error" interrupts Date: Thu, 13 Jun 2024 13:32:50 +0200 Message-ID: <20240613113229.169243141@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240613113227.389465891@linuxfoundation.org> References: <20240613113227.389465891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Adrian Hunter commit b3855668d98cf9c6aec2db999dd27d872f8ba878 upstream. Most Bay Trail devices do not enable UHS modes for the external sdcard slot the Lenovo Yoga Tablet 2 830 / 1050 and Lenovo Yoga Tablet 2 Pro 1380 (8", 10" and 13") models however do enable this. Using a UHS cards in these tablets results in errors like this one: [ 225.272001] mmc2: Unexpected interrupt 0x04000000. [ 225.272024] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== [ 225.272034] mmc2: sdhci: Sys addr: 0x0712c400 | Version: 0x0000b502 [ 225.272044] mmc2: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000007 [ 225.272054] mmc2: sdhci: Argument: 0x00000000 | Trn mode: 0x00000023 [ 225.272064] mmc2: sdhci: Present: 0x01e20002 | Host ctl: 0x00000016 [ 225.272073] mmc2: sdhci: Power: 0x0000000f | Blk gap: 0x00000000 [ 225.272082] mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x00000107 [ 225.272092] mmc2: sdhci: Timeout: 0x0000000e | Int stat: 0x00000001 [ 225.272101] mmc2: sdhci: Int enab: 0x03ff000b | Sig enab: 0x03ff000b [ 225.272110] mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000001 [ 225.272119] mmc2: sdhci: Caps: 0x076864b2 | Caps_1: 0x00000004 [ 225.272129] mmc2: sdhci: Cmd: 0x00000c1b | Max curr: 0x00000000 [ 225.272138] mmc2: sdhci: Resp[0]: 0x00000c00 | Resp[1]: 0x00000000 [ 225.272147] mmc2: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000900 [ 225.272155] mmc2: sdhci: Host ctl2: 0x0000000c [ 225.272164] mmc2: sdhci: ADMA Err: 0x00000003 | ADMA Ptr: 0x0712c200 [ 225.272172] mmc2: sdhci: ============================================ which results in IO errors leading to issues accessing the sdcard. 0x04000000 is a so-called "Tuning Error" which sofar the SDHCI driver does not support / enable. Modify the IRQ handler to process these. This fixes UHS microsd cards not working with these tablets. Link: https://lore.kernel.org/r/199bb4aa-c6b5-453e-be37-58bbf468800c@intel.com Signed-off-by: Hans de Goede Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240410191639.526324-3-hdegoede@redhat.com Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/sdhci.c | 10 ++++++++-- drivers/mmc/host/sdhci.h | 3 ++- 2 files changed, 10 insertions(+), 3 deletions(-) --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3439,12 +3439,18 @@ static void sdhci_data_irq(struct sdhci_ host->data->error = -EILSEQ; if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)))) sdhci_err_stats_inc(host, DAT_CRC); - } else if ((intmask & SDHCI_INT_DATA_CRC) && + } else if ((intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_TUNING_ERROR)) && SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) != MMC_BUS_TEST_R) { host->data->error = -EILSEQ; if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)))) sdhci_err_stats_inc(host, DAT_CRC); + if (intmask & SDHCI_INT_TUNING_ERROR) { + u16 ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); + + ctrl2 &= ~SDHCI_CTRL_TUNED_CLK; + sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2); + } } else if (intmask & SDHCI_INT_ADMA_ERROR) { pr_err("%s: ADMA error: 0x%08x\n", mmc_hostname(host->mmc), intmask); @@ -3979,7 +3985,7 @@ bool sdhci_cqe_irq(struct sdhci_host *ho } else *cmd_error = 0; - if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC)) { + if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC | SDHCI_INT_TUNING_ERROR)) { *data_error = -EILSEQ; if (!mmc_op_tuning(SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)))) sdhci_err_stats_inc(host, DAT_CRC); --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -158,6 +158,7 @@ #define SDHCI_INT_BUS_POWER 0x00800000 #define SDHCI_INT_AUTO_CMD_ERR 0x01000000 #define SDHCI_INT_ADMA_ERROR 0x02000000 +#define SDHCI_INT_TUNING_ERROR 0x04000000 #define SDHCI_INT_NORMAL_MASK 0x00007FFF #define SDHCI_INT_ERROR_MASK 0xFFFF8000 @@ -169,7 +170,7 @@ SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \ - SDHCI_INT_BLK_GAP) + SDHCI_INT_BLK_GAP | SDHCI_INT_TUNING_ERROR) #define SDHCI_INT_ALL_MASK ((unsigned int)-1) #define SDHCI_CQE_INT_ERR_MASK ( \