From patchwork Sun Apr 26 09:38:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baolin Wang X-Patchwork-Id: 11510311 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 E402813B2 for ; Sun, 26 Apr 2020 09:39:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC2D92084D for ; Sun, 26 Apr 2020 09:39:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="hiR2f8Xg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726171AbgDZJjq (ORCPT ); Sun, 26 Apr 2020 05:39:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726112AbgDZJjp (ORCPT ); Sun, 26 Apr 2020 05:39:45 -0400 Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAC64C061A0C; Sun, 26 Apr 2020 02:39:45 -0700 (PDT) Received: by mail-pl1-x643.google.com with SMTP id t4so5690330plq.12; Sun, 26 Apr 2020 02:39:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=+QEhf3M5Igm5iNJj2Bt8CwRfIM8IHL4FnOPbueXCCPo=; b=hiR2f8XgdQ4I4r71PfG/KeE3EZ47aPHssKMJU89Wr1lDfX6ijt6JPrw9Lbwc2OQG6O +bA7LiZhSe0B+gIp2wvEpb9x4tTrZ5zFSPBLMcpteDJ7s30klQV9xo/KbzThWZaKtot2 NrEoFprn7ZmnxQx042ee4ecdyIA0i21JWRixBeT4TuH7gsRSSWmOe+omGrUO+gO6JyEn 0nhP8zbtA7AzSNO5SStNfT8EzZmDKe2QTu09A01khKjrjy/GTpxGaNSaPl/FGiJwiEC6 2kZg+kzrLe8PYmIOMeviJgZvWEeThEtEo9h/QbG0Xq9b0sqa67VU4k8yT5YXpA11uEvu uGiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=+QEhf3M5Igm5iNJj2Bt8CwRfIM8IHL4FnOPbueXCCPo=; b=bOThbyz/yF/fKZRglwyhul3cdVhrJACQlLKV11VHcW2YUQ1QvIWkgGG2p9dqz/NIyu NY66SEE/vi8XV0B0PyyH0TRGjKpRNST8pSUkTwqCKdn3hWEpdKeRXULZohm+p9Df8DIT luARaIj4gZBg+qDD75Oi8pe44lr7nG6f8a58//1KC6WewN51T1xLR8dyU1ibMb8fgBVw V6R9Q439TMfhiB/KQxeDcAoqj8C7Hn95tTs20U0shSFFDYEIpSBsJtBSIwDfJSZ/dhhq dzXGkmB1lYPA8joWT4Tlk3aT+0zZLCpgGeuTH+ti7OybB4siSfH6lrarUGFnsX4/Ibua LWjg== X-Gm-Message-State: AGi0Puavaa8mNQTT4sKd1UtZwIETISKuTVbkjGIAmrSK32Jy0t/uJ1R3 /Sd2yxdgqOFcJWypyWHh6hk= X-Google-Smtp-Source: APiQypJvMEOJoozchy31fePl6Vzd0HO0P2V8U0e4UIDo1s895zEIYSUmgGRJeRzTUrfOmDv6sfsL6g== X-Received: by 2002:a17:902:8543:: with SMTP id d3mr17492120plo.314.1587893985373; Sun, 26 Apr 2020 02:39:45 -0700 (PDT) Received: from localhost.localdomain ([45.135.186.129]) by smtp.gmail.com with ESMTPSA id m129sm1835245pga.47.2020.04.26.02.39.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Apr 2020 02:39:44 -0700 (PDT) From: Baolin Wang To: axboe@kernel.dk, ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: arnd@arndb.de, linus.walleij@linaro.org, paolo.valente@linaro.org, ming.lei@redhat.com, orsonzhai@gmail.com, zhang.lyra@gmail.com, baolin.wang7@gmail.com, linux-mmc@vger.kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v2 4/7] mmc: host: sdhci: Factor out the command configuration Date: Sun, 26 Apr 2020 17:38:57 +0800 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Move the SD command configuration into one separate function to simplify the sdhci_send_command(). Moreover this function can be used to support ADMA3 transfer mode in following patches. Signed-off-by: Baolin Wang --- drivers/mmc/host/sdhci.c | 69 +++++++++++++++++++++++----------------- 1 file changed, 39 insertions(+), 30 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index afea8393c71f..3d4cdf0e0535 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1579,9 +1579,45 @@ static void sdhci_finish_data(struct sdhci_host *host) __sdhci_finish_data(host, false); } -static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) +static int sdhci_get_command(struct sdhci_host *host, struct mmc_command *cmd) { int flags; + + if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { + WARN_ONCE(1, "Unsupported response type!\n"); + /* + * This does not happen in practice because 136-bit response + * commands never have busy waiting, so rather than complicate + * the error path, just remove busy waiting and continue. + */ + cmd->flags &= ~MMC_RSP_BUSY; + } + + if (!(cmd->flags & MMC_RSP_PRESENT)) + flags = SDHCI_CMD_RESP_NONE; + else if (cmd->flags & MMC_RSP_136) + flags = SDHCI_CMD_RESP_LONG; + else if (cmd->flags & MMC_RSP_BUSY) + flags = SDHCI_CMD_RESP_SHORT_BUSY; + else + flags = SDHCI_CMD_RESP_SHORT; + + if (cmd->flags & MMC_RSP_CRC) + flags |= SDHCI_CMD_CRC; + if (cmd->flags & MMC_RSP_OPCODE) + flags |= SDHCI_CMD_INDEX; + + /* CMD19 is special in that the Data Present Select should be set */ + if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || + cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) + flags |= SDHCI_CMD_DATA; + + return SDHCI_MAKE_CMD(cmd->opcode, flags); +} + +static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) +{ + int command; u32 mask; unsigned long timeout; @@ -1625,34 +1661,7 @@ static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) sdhci_set_transfer_mode(host, cmd); - if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { - WARN_ONCE(1, "Unsupported response type!\n"); - /* - * This does not happen in practice because 136-bit response - * commands never have busy waiting, so rather than complicate - * the error path, just remove busy waiting and continue. - */ - cmd->flags &= ~MMC_RSP_BUSY; - } - - if (!(cmd->flags & MMC_RSP_PRESENT)) - flags = SDHCI_CMD_RESP_NONE; - else if (cmd->flags & MMC_RSP_136) - flags = SDHCI_CMD_RESP_LONG; - else if (cmd->flags & MMC_RSP_BUSY) - flags = SDHCI_CMD_RESP_SHORT_BUSY; - else - flags = SDHCI_CMD_RESP_SHORT; - - if (cmd->flags & MMC_RSP_CRC) - flags |= SDHCI_CMD_CRC; - if (cmd->flags & MMC_RSP_OPCODE) - flags |= SDHCI_CMD_INDEX; - - /* CMD19 is special in that the Data Present Select should be set */ - if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || - cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) - flags |= SDHCI_CMD_DATA; + command = sdhci_get_command(host, cmd); timeout = jiffies; if (host->data_timeout) @@ -1666,7 +1675,7 @@ static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) if (host->use_external_dma) sdhci_external_dma_pre_transfer(host, cmd); - sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); + sdhci_writew(host, command, SDHCI_COMMAND); return true; }