From patchwork Fri Mar 1 08:38:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiz Abbas X-Patchwork-Id: 10834671 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8DEB417EF for ; Fri, 1 Mar 2019 08:35:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7A9502F533 for ; Fri, 1 Mar 2019 08:35:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6E6E22F584; Fri, 1 Mar 2019 08:35:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 042A02F533 for ; Fri, 1 Mar 2019 08:35:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732708AbfCAIfW (ORCPT ); Fri, 1 Mar 2019 03:35:22 -0500 Received: from fllv0015.ext.ti.com ([198.47.19.141]:33720 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726066AbfCAIfW (ORCPT ); Fri, 1 Mar 2019 03:35:22 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id x218ZJCd008152; Fri, 1 Mar 2019 02:35:19 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1551429319; bh=OuUzBmpkqynNVQR0t4kAMb7G5VmxLrK7ZOtOQyDCvVs=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=UQO5XV1zEUbjaIfzd8r5Il9wHqLKNXGkJ3oZBWkdj/pYbDQlP076li0pBn3erSHPb mTGqZnTL7hL1E0pDUxMLexxL5n+C/Zjtq2WzZn1sWe4IigO970xu5HBvi+D23Dc9dV klNw5lpKkOMI1rdwpFF+PQM2RZHBA1nA/EcMXvS8= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x218ZJ1L124970 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 1 Mar 2019 02:35:19 -0600 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Fri, 1 Mar 2019 02:35:19 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Fri, 1 Mar 2019 02:35:18 -0600 Received: from a0230074-OptiPlex-7010.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x218ZDJC009551; Fri, 1 Mar 2019 02:35:17 -0600 From: Faiz Abbas To: , , CC: , , , Subject: [PATCH v2 1/2] mmc: sdhci: Add platform_cmd_err() to sdhci_ops Date: Fri, 1 Mar 2019 14:08:23 +0530 Message-ID: <20190301083824.23918-2-faiz_abbas@ti.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190301083824.23918-1-faiz_abbas@ti.com> References: <20190301083824.23918-1-faiz_abbas@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some platforms might need a custom method for handling command error interrupts. Add a callback to sdhci_ops to facilitate the same. Move default command error handling to its own non-static function so it can be called from platform drivers. Also make sdhci_finish_command() non-static. Fixes: 5b0d62108b46 ("mmc: sdhci-omap: Add platform specific reset callback") Signed-off-by: Faiz Abbas --- drivers/mmc/host/sdhci.c | 40 ++++++++++++++++++++++++++-------------- drivers/mmc/host/sdhci.h | 4 ++++ 2 files changed, 30 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index a8141ff9be03..ff60b1830896 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1445,7 +1445,7 @@ static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd) } } -static void sdhci_finish_command(struct sdhci_host *host) +void sdhci_finish_command(struct sdhci_host *host) { struct mmc_command *cmd = host->cmd; @@ -1495,6 +1495,8 @@ static void sdhci_finish_command(struct sdhci_host *host) sdhci_finish_mrq(host, cmd->mrq); } } +EXPORT_SYMBOL_GPL(sdhci_finish_command); + static u16 sdhci_get_preset_value(struct sdhci_host *host) { @@ -2780,6 +2782,26 @@ static void sdhci_timeout_data_timer(struct timer_list *t) * * \*****************************************************************************/ +void sdhci_cmd_err(struct sdhci_host *host, u32 intmask, u32 *intmask_p) +{ + if (intmask & SDHCI_INT_TIMEOUT) + host->cmd->error = -ETIMEDOUT; + else + host->cmd->error = -EILSEQ; + + /* Treat data command CRC error the same as data CRC error */ + if (host->cmd->data && + (intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) == + SDHCI_INT_CRC) { + host->cmd = NULL; + *intmask_p |= SDHCI_INT_DATA_CRC; + return; + } + + sdhci_finish_mrq(host, host->cmd->mrq); +} +EXPORT_SYMBOL_GPL(sdhci_cmd_err); + static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p) { /* Handle auto-CMD12 error */ @@ -2813,21 +2835,11 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p) if (intmask & (SDHCI_INT_TIMEOUT | SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)) { - if (intmask & SDHCI_INT_TIMEOUT) - host->cmd->error = -ETIMEDOUT; + if (host->ops->platform_cmd_err) + host->ops->platform_cmd_err(host, intmask, intmask_p); else - host->cmd->error = -EILSEQ; - - /* Treat data command CRC error the same as data CRC error */ - if (host->cmd->data && - (intmask & (SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)) == - SDHCI_INT_CRC) { - host->cmd = NULL; - *intmask_p |= SDHCI_INT_DATA_CRC; - return; - } + sdhci_cmd_err(host, intmask, intmask_p); - sdhci_finish_mrq(host, host->cmd->mrq); return; } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 01002cba1359..ca427d8efc29 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -645,6 +645,8 @@ struct sdhci_ops { void (*voltage_switch)(struct sdhci_host *host); void (*adma_write_desc)(struct sdhci_host *host, void **desc, dma_addr_t addr, int len, unsigned int cmd); + void (*platform_cmd_err)(struct sdhci_host *host, u32 intmask, + u32 *intmask_p); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS @@ -798,5 +800,7 @@ void sdhci_start_tuning(struct sdhci_host *host); void sdhci_end_tuning(struct sdhci_host *host); void sdhci_reset_tuning(struct sdhci_host *host); void sdhci_send_tuning(struct sdhci_host *host, u32 opcode); +void sdhci_cmd_err(struct sdhci_host *host, u32 intmask, u32 *intmask_p); +void sdhci_finish_command(struct sdhci_host *host); #endif /* __SDHCI_HW_H */ From patchwork Fri Mar 1 08:38:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiz Abbas X-Patchwork-Id: 10834667 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 27C7B1575 for ; Fri, 1 Mar 2019 08:35:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 16C1C2F533 for ; Fri, 1 Mar 2019 08:35:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B0DE2F584; Fri, 1 Mar 2019 08:35:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A28A92F533 for ; 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Fri, 1 Mar 2019 02:35:21 -0600 Received: from DFLE110.ent.ti.com (10.64.6.31) by DFLE110.ent.ti.com (10.64.6.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Fri, 1 Mar 2019 02:35:21 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE110.ent.ti.com (10.64.6.31) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Fri, 1 Mar 2019 02:35:21 -0600 Received: from a0230074-OptiPlex-7010.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x218ZDJD009551; Fri, 1 Mar 2019 02:35:19 -0600 From: Faiz Abbas To: , , CC: , , , Subject: [PATCH v2 2/2] mmc: sdhci-omap: Don't finish_mrq() on a command error during tuning Date: Fri, 1 Mar 2019 14:08:24 +0530 Message-ID: <20190301083824.23918-3-faiz_abbas@ti.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190301083824.23918-1-faiz_abbas@ti.com> References: <20190301083824.23918-1-faiz_abbas@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP commit 5b0d62108b46 ("mmc: sdhci-omap: Add platform specific reset callback") skips data resets during tuning operation. Because of this, a data error or data finish interrupt might still arrive after a command error has been handled and the mrq ended. This ends up with a "mmc0: Got data interrupt 0x00000002 even though no data operation was in progress" error message. Fix this by adding a platform specific callback for command errors. Mark the mrq as a failure but wait for a data interrupt instead of calling finish_mrq(). Fixes: 5b0d62108b46 ("mmc: sdhci-omap: Add platform specific reset callback") Signed-off-by: Faiz Abbas --- drivers/mmc/host/sdhci-omap.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index b1a66ca3821a..67b361a403bc 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -797,6 +797,29 @@ void sdhci_omap_reset(struct sdhci_host *host, u8 mask) sdhci_reset(host, mask); } +void sdhci_omap_cmd_err(struct sdhci_host *host, u32 intmask, u32 *intmask_p) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host); + + if (omap_host->is_tuning) { + /* + * Since we are not resetting data lines during tuning + * operation, data error or data complete interrupts + * might still arrive. Mark this request as a failure + * but still wait for the data interrupt + */ + if (intmask & SDHCI_INT_TIMEOUT) + host->cmd->error = -ETIMEDOUT; + else + host->cmd->error = -EILSEQ; + + sdhci_finish_command(host); + } else { + sdhci_cmd_err(host, intmask, intmask_p); + } +} + static struct sdhci_ops sdhci_omap_ops = { .set_clock = sdhci_omap_set_clock, .set_power = sdhci_omap_set_power, @@ -807,6 +830,7 @@ static struct sdhci_ops sdhci_omap_ops = { .platform_send_init_74_clocks = sdhci_omap_init_74_clocks, .reset = sdhci_omap_reset, .set_uhs_signaling = sdhci_omap_set_uhs_signaling, + .platform_cmd_err = sdhci_omap_cmd_err, }; static int sdhci_omap_set_capabilities(struct sdhci_omap_host *omap_host)