From nobody Thu Sep 18 02:44:42 2025 Received: from mail-oo1-f46.google.com (mail-oo1-f46.google.com [209.85.161.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCC6D5811F; Tue, 23 Jan 2024 06:29:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705991375; cv=none; b=LXjnNQdGSxFE1wAcpHOJVIsrb9z6EDgokx0z+yDDRtSj2e3e2szl/e+ZwicNWBSTrxzJ54WbR/MQjlcOa+oYQkpG3V1aWvOQZpOHy7iRbHqQk8wtsugjoKVyb7EpNEdoQpeiYlvWdqZFJuZjg/Fl+0kVe7y2zLfJZ4jan7Po0ZA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705991375; c=relaxed/simple; bh=KmnGf2+Mq0n5ZVn1DlDo6ruSdYdalOE9GfkXao0OXts=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=GwB65utZTBLSl13UkxFMhguY2w+/nhbBuLVNPsPrpHt3dSFnD2d9/2hMLODEC7xEzGJb9ZpsLSF75437Jtgk0SmsqLFjMf0fBV8xQiBaxpN8znEK8m8KvMOdWfZo5Ds7EH7ZwP63qhAs1fAsMZgZrGshBfDDSdO177BObYbeF10= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=BMl1rOmT; arc=none smtp.client-ip=209.85.161.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BMl1rOmT" Received: by mail-oo1-f46.google.com with SMTP id 006d021491bc7-595aa5b1fe0so2668541eaf.2; Mon, 22 Jan 2024 22:29:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1705991373; x=1706596173; darn=vger.kernel.org; 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=hD470mXnkbQGI1N1m86lrMBGmksEzzbMN7rxMhUeOGE=; b=BMl1rOmTFOyNWBsdqsEqJY5OUto+NZCL+UvVZk/Ij93ZrQ0w6Ac52ItOfjmsUtFb17 pGfvPgrJFmyiskonYcSptqqh4A45uzZTpTkNv2fL5u9FPOknMWWQjMz5byfHCkL843bf xG6m20o3j5SJzcczmiDij9hG23Cu8Jens89wp14T2iL88uuFthKympE/jA/Jo2TG4KA6 /vD4MKr0cv3VIoBzzSD10ptFmpAaoKp07l3CNlxx94+BjGKQFMAhVQuUKwQw3d55pwwz VdWxD33zm6AHkA2c88VJbf37yLUK9050Cj9r3dzoafHtJ3XpgW7gnBVMnzbMY4uubwYS /tXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705991373; x=1706596173; 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=hD470mXnkbQGI1N1m86lrMBGmksEzzbMN7rxMhUeOGE=; b=cnahbrd2+EtJCgHuhveIdKSn4117qBX7dkRB3enodku0q9di7Zn/zXPHCi87CC+Dgh 5JubDFzKUnF+qv18kXCKwBuDdC3ygtKiU/T3zaoml8KMz+Yj+RT/3J1VGNuXkutwp+FE Bd2KWgcfsI3CRcBsC+13qveCo7ZGb6FaW2e/T3YOWmL2MUSKsEW5VnpOMWORhfgzNUK8 BC5qQjPjk6HVXxUOf8IsjgsDARsgbAvyJ5UXoJMyhw/wcHs/pj/L0yREVR36xEcVD7Cx fp5pfIQe+KotXhSW7EKDzIWLa09NsP2MVS3gXWt9+A4l8QhA3goSdUHpZgvBqTnd6gdm hD0Q== X-Gm-Message-State: AOJu0Yx7jT9FlGzVsu7yuefz6onbaxYqZk7uS00ISk96WjmsS0NWcQs1 q50j8m8kwaHzdqqN6Sh7KUTn/YejHcN/fHD9JEzrDMgKZeHhg7Md X-Google-Smtp-Source: AGHT+IFIOPknFqG7EN/qpH7+bbmbJJNDpZOERmRytiigc3VlNLJSQ4qDvU2PEISS1pBNeFk3+J21JQ== X-Received: by 2002:a05:6358:4b14:b0:176:374c:6e87 with SMTP id kr20-20020a0563584b1400b00176374c6e87mr5357522rwc.5.1705991372699; Mon, 22 Jan 2024 22:29:32 -0800 (PST) Received: from localhost.localdomain (2001-b400-e2ac-a4c6-7d2b-d8b3-ed27-1f50.emome-ip6.hinet.net. [2001:b400:e2ac:a4c6:7d2b:d8b3:ed27:1f50]) by smtp.gmail.com with ESMTPSA id l10-20020a056a00140a00b006d9b2694b0csm10595188pfu.200.2024.01.22.22.29.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jan 2024 22:29:32 -0800 (PST) From: Victor Shih To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, benchuanggli@gmail.com, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, takahiro.akashi@linaro.org, dlunev@chromium.org, Victor Shih , Ben Chuang , Victor Shih Subject: [PATCH V14 16/21] mmc: sdhci-uhs2: add request() and others Date: Tue, 23 Jan 2024 14:28:22 +0800 Message-Id: <20240123062827.8525-17-victorshihgli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240123062827.8525-1-victorshihgli@gmail.com> References: <20240123062827.8525-1-victorshihgli@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Victor Shih This is a sdhci version of mmc's request operation. It covers both UHS-I and UHS-II. Signed-off-by: Ben Chuang Signed-off-by: AKASHI Takahiro Signed-off-by: Victor Shih --- Updates in V14: - Use mmc_card_uhs2() to stead sdhci_uhs2_mode() in the sdhci_uhs2_request(). Updates in V13: - Re-order function to avoid declaration. - Remove unnecessary function. Updates in V11: - Drop the check mmc_card_uhs2_hd_mode(host->mmc) in sdhci_uhs2_set_transfer_mode(). Updates in V10: - Use tmode_half_duplex to instead of uhs2_tmode0_flag in sdhci_uhs2_set_transfer_mode(). Updates in V9: - Modify the annotations in __sdhci_uhs2_send_command(). Updates in V8: - Adjust the position of matching brackets in sdhci_uhs2_send_command_retry(). - Modify CameCase definition in __sdhci_uhs2_finish_command(). - Modify error message in __sdhci_uhs2_finish_command(). - sdhci_uhs2_send_command_retry() to instead of sdhci_uhs2_send_command() in sdhci_uhs2_request(). - Use sdhci_uhs2_mode() to simplify code in sdhci_uhs2_request_atomic(). - Add forward declaration for sdhci_send_command(). Updates in V7: - Cancel export state of some functions. - Remove unnecessary whitespace changes. Updates in V6: - Add uhs2_dev_cmd() to simplify code. - Remove unnecessary functions. - Cancel export state of some functions. - Drop use CONFIG_MMC_DEBUG(). - Wrap at 100 columns in some functions. --- drivers/mmc/host/sdhci-uhs2.c | 379 +++++++++++++++++++++++++++++++++- drivers/mmc/host/sdhci.c | 49 +++-- drivers/mmc/host/sdhci.h | 8 + 3 files changed, 420 insertions(+), 16 deletions(-) diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c index 0c543899ed6c..b47bcf6f890f 100644 --- a/drivers/mmc/host/sdhci-uhs2.c +++ b/drivers/mmc/host/sdhci-uhs2.c @@ -14,6 +14,8 @@ #include #include #include +#include +#include =20 #include "sdhci.h" #include "sdhci-uhs2.h" @@ -29,6 +31,8 @@ #define UHS2_INTERFACE_DETECT_TIMEOUT_100MS 100000 #define UHS2_LANE_SYNC_TIMEOUT_150MS 150000 =20 +#define UHS2_ARG_IOADR_MASK 0xfff + void sdhci_uhs2_dump_regs(struct sdhci_host *host) { if (!(mmc_card_uhs2(host->mmc))) @@ -63,6 +67,11 @@ EXPORT_SYMBOL_GPL(sdhci_uhs2_dump_regs); * = * \*************************************************************************= ****/ =20 +static inline u16 uhs2_dev_cmd(struct mmc_command *cmd) +{ + return be16_to_cpu((__be16)cmd->uhs2_cmd->arg) & UHS2_ARG_IOADR_MASK; +} + static inline int mmc_opt_regulator_set_ocr(struct mmc_host *mmc, struct regulator *supply, unsigned short vdd_bit) @@ -140,7 +149,7 @@ static void sdhci_uhs2_set_power(struct sdhci_host *hos= t, unsigned char mode, un =20 static u8 sdhci_calc_timeout_uhs2(struct sdhci_host *host, u8 *cmd_res, u8= *dead_lock) { - /* timeout in us */ + /* timeout in us */#define UHS2_ARG_IOADR_MASK 0xfff unsigned int dead_lock_timeout =3D 1 * 1000 * 1000; unsigned int cmd_res_timeout =3D 5 * 1000; unsigned int current_timeout; @@ -527,6 +536,373 @@ static int sdhci_uhs2_control(struct mmc_host *mmc, e= num sd_uhs2_operation op) return err; } =20 +/*************************************************************************= ****\ + * = * + * Core functions = * + * = * +\*************************************************************************= ****/ + +static void sdhci_uhs2_prepare_data(struct sdhci_host *host, struct mmc_co= mmand *cmd) +{ + struct mmc_data *data =3D cmd->data; + + sdhci_initialize_data(host, data); + + sdhci_prepare_dma(host, data); + + sdhci_writew(host, data->blksz, SDHCI_UHS2_BLOCK_SIZE); + sdhci_writew(host, data->blocks, SDHCI_UHS2_BLOCK_COUNT); +} + +static void sdhci_uhs2_finish_data(struct sdhci_host *host) +{ + struct mmc_data *data =3D host->data; + + __sdhci_finish_data_common(host); + + __sdhci_finish_mrq(host, data->mrq); +} + +static void sdhci_uhs2_set_transfer_mode(struct sdhci_host *host, struct m= mc_command *cmd) +{ + u16 mode; + struct mmc_data *data =3D cmd->data; + + if (!data) { + /* clear Auto CMD settings for no data CMDs */ + if (uhs2_dev_cmd(cmd) =3D=3D UHS2_DEV_CMD_TRANS_ABORT) { + mode =3D 0; + } else { + mode =3D sdhci_readw(host, SDHCI_UHS2_TRANS_MODE); + if (cmd->opcode =3D=3D MMC_STOP_TRANSMISSION || cmd->opcode =3D=3D MMC_= ERASE) + mode |=3D SDHCI_UHS2_TRNS_WAIT_EBSY; + else + /* send status mode */ + if (cmd->opcode =3D=3D MMC_SEND_STATUS) + mode =3D 0; + } + + DBG("UHS2 no data trans mode is 0x%x.\n", mode); + + sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE); + return; + } + + WARN_ON(!host->data); + + mode =3D SDHCI_UHS2_TRNS_BLK_CNT_EN | SDHCI_UHS2_TRNS_WAIT_EBSY; + if (data->flags & MMC_DATA_WRITE) + mode |=3D SDHCI_UHS2_TRNS_DATA_TRNS_WRT; + + if (data->blocks =3D=3D 1 && + data->blksz !=3D 512 && + cmd->opcode !=3D MMC_READ_SINGLE_BLOCK && + cmd->opcode !=3D MMC_WRITE_BLOCK) { + mode &=3D ~SDHCI_UHS2_TRNS_BLK_CNT_EN; + mode |=3D SDHCI_UHS2_TRNS_BLK_BYTE_MODE; + } + + if (host->flags & SDHCI_REQ_USE_DMA) + mode |=3D SDHCI_UHS2_TRNS_DMA; + + if (cmd->uhs2_cmd->tmode_half_duplex) + mode |=3D SDHCI_UHS2_TRNS_2L_HD; + + sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE); + + DBG("UHS2 trans mode is 0x%x.\n", mode); +} + +static void __sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_= command *cmd) +{ + int i, j; + int cmd_reg; + + i =3D 0; + sdhci_writel(host, + ((u32)cmd->uhs2_cmd->arg << 16) | + (u32)cmd->uhs2_cmd->header, + SDHCI_UHS2_CMD_PACKET + i); + i +=3D 4; + + /* + * Per spec, payload (config) should be MSB before sending out. + * But we don't need convert here because had set payload as + * MSB when preparing config read/write commands. + */ + for (j =3D 0; j < cmd->uhs2_cmd->payload_len / sizeof(u32); j++) { + sdhci_writel(host, *(cmd->uhs2_cmd->payload + j), SDHCI_UHS2_CMD_PACKET = + i); + i +=3D 4; + } + + for ( ; i < SDHCI_UHS2_CMD_PACK_MAX_LEN; i +=3D 4) + sdhci_writel(host, 0, SDHCI_UHS2_CMD_PACKET + i); + + DBG("UHS2 CMD packet_len =3D %d.\n", cmd->uhs2_cmd->packet_len); + for (i =3D 0; i < cmd->uhs2_cmd->packet_len; i++) + DBG("UHS2 CMD_PACKET[%d] =3D 0x%x.\n", i, + sdhci_readb(host, SDHCI_UHS2_CMD_PACKET + i)); + + cmd_reg =3D FIELD_PREP(SDHCI_UHS2_CMD_PACK_LEN_MASK, cmd->uhs2_cmd->packe= t_len); + if ((cmd->flags & MMC_CMD_MASK) =3D=3D MMC_CMD_ADTC) + cmd_reg |=3D SDHCI_UHS2_CMD_DATA; + if (cmd->opcode =3D=3D MMC_STOP_TRANSMISSION) + cmd_reg |=3D SDHCI_UHS2_CMD_CMD12; + + /* UHS2 Native ABORT */ + if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) && + (uhs2_dev_cmd(cmd) =3D=3D UHS2_DEV_CMD_TRANS_ABORT)) + cmd_reg |=3D SDHCI_UHS2_CMD_TRNS_ABORT; + + /* UHS2 Native DORMANT */ + if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) && + (uhs2_dev_cmd(cmd) =3D=3D UHS2_DEV_CMD_GO_DORMANT_STATE)) + cmd_reg |=3D SDHCI_UHS2_CMD_DORMANT; + + DBG("0x%x is set to UHS2 CMD register.\n", cmd_reg); + + sdhci_writew(host, cmd_reg, SDHCI_UHS2_CMD); +} + +static bool sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_co= mmand *cmd) +{ + int flags; + u32 mask; + unsigned long timeout; + + WARN_ON(host->cmd); + + /* Initially, a command has no error */ + cmd->error =3D 0; + + if (cmd->opcode =3D=3D MMC_STOP_TRANSMISSION) + cmd->flags |=3D MMC_RSP_BUSY; + + mask =3D SDHCI_CMD_INHIBIT; + + if (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) + return false; + + host->cmd =3D cmd; + host->data_timeout =3D 0; + if (sdhci_data_line_cmd(cmd)) { + WARN_ON(host->data_cmd); + host->data_cmd =3D cmd; + __sdhci_uhs2_set_timeout(host); + } + + if (cmd->data) + sdhci_uhs2_prepare_data(host, cmd); + + sdhci_uhs2_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 &=3D ~MMC_RSP_BUSY; + } + + if (!(cmd->flags & MMC_RSP_PRESENT)) + flags =3D SDHCI_CMD_RESP_NONE; + else if (cmd->flags & MMC_RSP_136) + flags =3D SDHCI_CMD_RESP_LONG; + else if (cmd->flags & MMC_RSP_BUSY) + flags =3D SDHCI_CMD_RESP_SHORT_BUSY; + else + flags =3D SDHCI_CMD_RESP_SHORT; + + if (cmd->flags & MMC_RSP_CRC) + flags |=3D SDHCI_CMD_CRC; + if (cmd->flags & MMC_RSP_OPCODE) + flags |=3D SDHCI_CMD_INDEX; + + timeout =3D jiffies; + if (host->data_timeout) + timeout +=3D nsecs_to_jiffies(host->data_timeout); + else if (!cmd->data && cmd->busy_timeout > 9000) + timeout +=3D DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ; + else + timeout +=3D 10 * HZ; + sdhci_mod_timer(host, cmd->mrq, timeout); + + __sdhci_uhs2_send_command(host, cmd); + + return true; +} + +static bool sdhci_uhs2_send_command_retry(struct sdhci_host *host, + struct mmc_command *cmd, + unsigned long flags) + __releases(host->lock) + __acquires(host->lock) +{ + struct mmc_command *deferred_cmd =3D host->deferred_cmd; + int timeout =3D 10; /* Approx. 10 ms */ + bool present; + + while (!sdhci_uhs2_send_command(host, cmd)) { + if (!timeout--) { + pr_err("%s: Controller never released inhibit bit(s).\n", + mmc_hostname(host->mmc)); + sdhci_dumpregs(host); + cmd->error =3D -EIO; + return false; + } + + spin_unlock_irqrestore(&host->lock, flags); + + usleep_range(1000, 1250); + + present =3D host->mmc->ops->get_cd(host->mmc); + + spin_lock_irqsave(&host->lock, flags); + + /* A deferred command might disappear, handle that */ + if (cmd =3D=3D deferred_cmd && cmd !=3D host->deferred_cmd) + return true; + + if (sdhci_present_error(host, cmd, present)) + return false; + } + + if (cmd =3D=3D host->deferred_cmd) + host->deferred_cmd =3D NULL; + + return true; +} + +static void __sdhci_uhs2_finish_command(struct sdhci_host *host) +{ + struct mmc_command *cmd =3D host->cmd; + u8 resp; + u8 error_code; + bool breada0 =3D 0; + int i; + + if (host->mmc->uhs2_sd_tran) { + resp =3D sdhci_readb(host, SDHCI_UHS2_RESPONSE + 2); + if (resp & UHS2_RES_NACK_MASK) { + error_code =3D (resp >> UHS2_RES_ECODE_POS) & UHS2_RES_ECODE_MASK; + pr_err("%s: NACK response, ECODE=3D0x%x.\n", + mmc_hostname(host->mmc), error_code); + } + breada0 =3D 1; + } + + if (cmd->uhs2_resp && + cmd->uhs2_resp_len && cmd->uhs2_resp_len <=3D 20) { + /* Get whole response of some native CCMD, like + * DEVICE_INIT, ENUMERATE. + */ + for (i =3D 0; i < cmd->uhs2_resp_len; i++) + cmd->uhs2_resp[i] =3D sdhci_readb(host, SDHCI_UHS2_RESPONSE + i); + } else { + /* Get SD CMD response and Payload for some read + * CCMD, like INQUIRY_CFG. + */ + /* Per spec (p136), payload field is divided into + * a unit of DWORD and transmission order within + * a DWORD is big endian. + */ + if (!breada0) + sdhci_readl(host, SDHCI_UHS2_RESPONSE); + for (i =3D 4; i < 20; i +=3D 4) { + cmd->resp[i / 4 - 1] =3D + (sdhci_readb(host, + SDHCI_UHS2_RESPONSE + i) << 24) | + (sdhci_readb(host, + SDHCI_UHS2_RESPONSE + i + 1) + << 16) | + (sdhci_readb(host, + SDHCI_UHS2_RESPONSE + i + 2) + << 8) | + sdhci_readb(host, SDHCI_UHS2_RESPONSE + i + 3); + } + } +} + +static void sdhci_uhs2_finish_command(struct sdhci_host *host) +{ + struct mmc_command *cmd =3D host->cmd; + + __sdhci_uhs2_finish_command(host); + + host->cmd =3D NULL; + + if (cmd->mrq->cap_cmd_during_tfr && cmd =3D=3D cmd->mrq->cmd) + mmc_command_done(host->mmc, cmd->mrq); + + /* + * The host can send and interrupt when the busy state has + * ended, allowing us to wait without wasting CPU cycles. + * The busy signal uses DAT0 so this is similar to waiting + * for data to complete. + * + * Note: The 1.0 specification is a bit ambiguous about this + * feature so there might be some problems with older + * controllers. + */ + if (cmd->flags & MMC_RSP_BUSY) { + if (cmd->data) { + DBG("Cannot wait for busy signal when also doing a data transfer"); + } else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) && + cmd =3D=3D host->data_cmd) { + /* Command complete before busy is ended */ + return; + } + } + + /* Processed actual command. */ + if (host->data && host->data_early) + sdhci_uhs2_finish_data(host); + + if (!cmd->data) + __sdhci_finish_mrq(host, cmd->mrq); +} + +static void sdhci_uhs2_request(struct mmc_host *mmc, struct mmc_request *m= rq) +{ + struct sdhci_host *host =3D mmc_priv(mmc); + struct mmc_command *cmd; + unsigned long flags; + bool present; + + if (!(mmc_card_uhs2(mmc))) { + sdhci_request(mmc, mrq); + return; + } + + mrq->stop =3D NULL; + mrq->sbc =3D NULL; + if (mrq->data) + mrq->data->stop =3D NULL; + + /* Firstly check card presence */ + present =3D mmc->ops->get_cd(mmc); + + spin_lock_irqsave(&host->lock, flags); + + if (sdhci_present_error(host, mrq->cmd, present)) + goto out_finish; + + cmd =3D mrq->cmd; + + if (!sdhci_uhs2_send_command_retry(host, cmd, flags)) + goto out_finish; + + spin_unlock_irqrestore(&host->lock, flags); + + return; + +out_finish: + sdhci_finish_mrq(host, mrq); + spin_unlock_irqrestore(&host->lock, flags); +} + /*************************************************************************= ****\ * = * * Driver init/exit = * @@ -536,6 +912,7 @@ static int sdhci_uhs2_control(struct mmc_host *mmc, enu= m sd_uhs2_operation op) static int sdhci_uhs2_host_ops_init(struct sdhci_host *host) { host->mmc_host_ops.uhs2_control =3D sdhci_uhs2_control; + host->mmc_host_ops.request =3D sdhci_uhs2_request; =20 return 0; } diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 64704f6537e0..46b6502d4d19 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -147,10 +147,11 @@ void sdhci_enable_v4_mode(struct sdhci_host *host) } EXPORT_SYMBOL_GPL(sdhci_enable_v4_mode); =20 -static inline bool sdhci_data_line_cmd(struct mmc_command *cmd) +bool sdhci_data_line_cmd(struct mmc_command *cmd) { return cmd->data || cmd->flags & MMC_RSP_BUSY; } +EXPORT_SYMBOL_GPL(sdhci_data_line_cmd); =20 static void sdhci_set_card_detection(struct sdhci_host *host, bool enable) { @@ -502,14 +503,15 @@ static inline void sdhci_led_deactivate(struct sdhci_= host *host) =20 #endif =20 -static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *m= rq, - unsigned long timeout) +void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq, + unsigned long timeout) { if (sdhci_data_line_cmd(mrq->cmd)) mod_timer(&host->data_timer, timeout); else mod_timer(&host->timer, timeout); } +EXPORT_SYMBOL_GPL(sdhci_mod_timer); =20 static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *m= rq) { @@ -1076,8 +1078,7 @@ static void sdhci_set_timeout(struct sdhci_host *host= , struct mmc_command *cmd) __sdhci_set_timeout(host, cmd); } =20 -static void sdhci_initialize_data(struct sdhci_host *host, - struct mmc_data *data) +void sdhci_initialize_data(struct sdhci_host *host, struct mmc_data *data) { WARN_ON(host->data); =20 @@ -1090,6 +1091,7 @@ static void sdhci_initialize_data(struct sdhci_host *= host, host->data_early =3D 0; host->data->bytes_xfered =3D 0; } +EXPORT_SYMBOL_GPL(sdhci_initialize_data); =20 static inline void sdhci_set_block_info(struct sdhci_host *host, struct mmc_data *data) @@ -1112,12 +1114,8 @@ static inline void sdhci_set_block_info(struct sdhci= _host *host, } } =20 -static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command= *cmd) +void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data) { - struct mmc_data *data =3D cmd->data; - - sdhci_initialize_data(host, data); - if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { struct scatterlist *sg; unsigned int length_mask, offset_mask; @@ -1202,6 +1200,16 @@ static void sdhci_prepare_data(struct sdhci_host *ho= st, struct mmc_command *cmd) } =20 sdhci_set_transfer_irqs(host); +} +EXPORT_SYMBOL_GPL(sdhci_prepare_dma); + +static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command= *cmd) +{ + struct mmc_data *data =3D cmd->data; + + sdhci_initialize_data(host, data); + + sdhci_prepare_dma(host, data); =20 sdhci_set_block_info(host, data); } @@ -1519,7 +1527,7 @@ static void sdhci_set_mrq_done(struct sdhci_host *hos= t, struct mmc_request *mrq) WARN_ON(i >=3D SDHCI_MAX_MRQS); } =20 -static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request= *mrq) +void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq) { if (host->cmd && host->cmd->mrq =3D=3D mrq) host->cmd =3D NULL; @@ -1543,15 +1551,17 @@ static void __sdhci_finish_mrq(struct sdhci_host *h= ost, struct mmc_request *mrq) if (!sdhci_has_requests(host)) sdhci_led_deactivate(host); } +EXPORT_SYMBOL_GPL(__sdhci_finish_mrq); =20 -static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *= mrq) +void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq) { __sdhci_finish_mrq(host, mrq); =20 queue_work(host->complete_wq, &host->complete_work); } +EXPORT_SYMBOL_GPL(sdhci_finish_mrq); =20 -static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_time= out) +void __sdhci_finish_data_common(struct sdhci_host *host) { struct mmc_command *data_cmd =3D host->data_cmd; struct mmc_data *data =3D host->data; @@ -1585,6 +1595,14 @@ static void __sdhci_finish_data(struct sdhci_host *h= ost, bool sw_data_timeout) data->bytes_xfered =3D 0; else data->bytes_xfered =3D data->blksz * data->blocks; +} +EXPORT_SYMBOL_GPL(__sdhci_finish_data_common); + +static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_time= out) +{ + struct mmc_data *data =3D host->data; + + __sdhci_finish_data_common(host); =20 /* * Need to send CMD12 if - @@ -1719,8 +1737,8 @@ static bool sdhci_send_command(struct sdhci_host *hos= t, struct mmc_command *cmd) return true; } =20 -static bool sdhci_present_error(struct sdhci_host *host, - struct mmc_command *cmd, bool present) +bool sdhci_present_error(struct sdhci_host *host, + struct mmc_command *cmd, bool present) { if (!present || host->flags & SDHCI_DEVICE_DEAD) { cmd->error =3D -ENOMEDIUM; @@ -1729,6 +1747,7 @@ static bool sdhci_present_error(struct sdhci_host *ho= st, =20 return false; } +EXPORT_SYMBOL_GPL(sdhci_present_error); =20 static bool sdhci_send_command_retry(struct sdhci_host *host, struct mmc_command *cmd, diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index b2e425dfac95..0e03dc4dacb7 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -828,6 +828,14 @@ static inline void sdhci_read_caps(struct sdhci_host *= host) __sdhci_read_caps(host, NULL, NULL, NULL); } =20 +bool sdhci_data_line_cmd(struct mmc_command *cmd); +void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq, uns= igned long timeout); +void sdhci_initialize_data(struct sdhci_host *host, struct mmc_data *data); +void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data); +void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq); +void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq); +void __sdhci_finish_data_common(struct sdhci_host *host); +bool sdhci_present_error(struct sdhci_host *host, struct mmc_command *cmd,= bool present); u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock, unsigned int *actual_clock); void sdhci_set_clock(struct sdhci_host *host, unsigned int clock); --=20 2.25.1