From patchwork Wed May 31 11:15:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Victor Shih X-Patchwork-Id: 13261985 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9CFEAC77B7C for ; Wed, 31 May 2023 11:17:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235529AbjEaLRl (ORCPT ); Wed, 31 May 2023 07:17:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235482AbjEaLRg (ORCPT ); Wed, 31 May 2023 07:17:36 -0400 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F04E12B; Wed, 31 May 2023 04:17:35 -0700 (PDT) Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1b04949e5baso25210405ad.0; Wed, 31 May 2023 04:17:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685531855; x=1688123855; 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=xtPxOefjM4ZZdvGD2evpcXztukQ57ylG6FBkyjgKbVM=; b=JWFKoinsE2V/9SpLB1uLSEP86duqVBAZ9I67W7uyZykLSs7tBifZq9sfPF24MTKJs1 S8VuuqV4snWsZ9nDKArd2telquFglvduMk4QPZ9BCVWCWpGNA78UbqeWChucVQ4QU7zQ qk1mrfzgWu6Q9PXT7ryOqB9VHOzeSn4/6H/uKb542v9YJ1iDxGoiGdKY0xOgWRvTrcDP JEPs4z5Gx7hRPTTAGN8wVl6pV9IfY3ZjPKJaP0lCUHxOQWRqgi53wI/ur/PsV0zx4x0Q GjuyN+gF1W0FvXYLmEn1Pr/Vb/B2NdoZyMTwbjP/qc/SZnd8V/O0OmghgJHkbLTm13MS H7JQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685531855; x=1688123855; 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=xtPxOefjM4ZZdvGD2evpcXztukQ57ylG6FBkyjgKbVM=; b=PdhzClLK1RY+lSKiAhZrPqoU+/TOVpVMciBMdnLbVkGSKSqifMFZBhpACM2vNG3t+S 1QaScFmhVsB2PCe8BviH1dyu3DNJjzpoXwKeB4lkoJxSXTxGF6GTC2l2DeMxgag25jwZ Q+MnhTokoyruTfGNuLtSbv431VrXXJ6Cd8hnnI5rSLck9Cs5FG3yODcfDYQluuUaGrer OG91TfJiCuiY9e/RQTOcRbR3VgPJKH/nHEkroksfZxsJ1tDHVJYd5rpmzmeqVTwNjqUO uVrYHFImIOOPmUPNNSd4uFxUA2yDSbVlN5mF86E2pxvWbWM89qGcT6kg5D7nL3HIM/l1 24Dw== X-Gm-Message-State: AC+VfDw5vXicdCBThibWE+87j4Ij/v+TvxQM+wOl8cAIRxJLd/nFIibc Tmf+FtUm2TSQdkTtypVcfU4= X-Google-Smtp-Source: ACHHUZ62NF0GSp+/rxBFAyMqdzACWR+qHcswz2cx1e2vqQmWlGEVLzJB7HxJPzfBK0mP7VUM/Sa6hg== X-Received: by 2002:a17:903:22cb:b0:1b0:bf80:d1f2 with SMTP id y11-20020a17090322cb00b001b0bf80d1f2mr3365069plg.49.1685531854654; Wed, 31 May 2023 04:17:34 -0700 (PDT) Received: from localhost.localdomain (111-82-252-250.emome-ip.hinet.net. [111.82.252.250]) by smtp.gmail.com with ESMTPSA id d17-20020a170903231100b001b0aec3ed59sm1076588plh.256.2023.05.31.04.17.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 04:17:34 -0700 (PDT) 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, Victor Shih , Ben Chuang , Victor Shih Subject: [PATCH V4 4/4] mmc: sdhci-pci-gli: Add support SD Express card for GL9767 Date: Wed, 31 May 2023 19:15:18 +0800 Message-Id: <20230531111518.396868-5-victorshihgli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230531111518.396868-1-victorshihgli@gmail.com> References: <20230531111518.396868-1-victorshihgli@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Victor Shih Add support SD Express card for GL9767. The workflow of the SD Express card in GL9767 is as below. 1. GL9767 operates in SD mode and set MMC_CAP2_SD_EXP flag. 2. If card is inserted, Host send CMD8 to ask the capabilities of the card. 3. If the card has PCIe capability, then init_sd_express() will be invoked. 4. If the card has been put in write protect state then the SD features supported by SD mode but not supported by PCIe mode, therefore GL9767 switch to SD mode. 5. If the card has not been put in write protect state then GL9767 switch from SD mode to PCIe/NVMe mode and mmc driver handover control to NVMe driver. 6. If card is removed, GL9767 will return to SD mode. Signed-off-by: Ben Chuang Signed-off-by: Victor Shih Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci-pci-gli.c | 113 +++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 392a106cea18..e47236e3b89a 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -164,6 +164,10 @@ #define PCIE_GLI_9767_CFG 0x8A0 #define PCIE_GLI_9767_CFG_LOW_PWR_OFF BIT(12) +#define PCIE_GLI_9767_COMBO_MUX_CTL 0x8C8 +#define PCIE_GLI_9767_COMBO_MUX_CTL_RST_EN BIT(6) +#define PCIE_GLI_9767_COMBO_MUX_CTL_WAIT_PERST_EN BIT(10) + #define PCIE_GLI_9767_PWR_MACRO_CTL 0x8D0 #define PCIE_GLI_9767_PWR_MACRO_CTL_LOW_VOLTAGE GENMASK(3, 0) #define PCIE_GLI_9767_PWR_MACRO_CTL_LD0_LOW_OUTPUT_VOLTAGE GENMASK(15, 12) @@ -181,6 +185,9 @@ #define PCIE_GLI_9767_SCR_CORE_PWR_D3_OFF BIT(21) #define PCIE_GLI_9767_SCR_CFG_RST_DATA_LINK_DOWN BIT(30) +#define PCIE_GLI_9767_SDHC_CAP 0x91C +#define PCIE_GLI_9767_SDHC_CAP_SDEI_RESULT BIT(5) + #define PCIE_GLI_9767_SD_PLL_CTL 0x938 #define PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV GENMASK(9, 0) #define PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV GENMASK(15, 12) @@ -191,6 +198,23 @@ #define PCIE_GLI_9767_SD_PLL_CTL2 0x93C #define PCIE_GLI_9767_SD_PLL_CTL2_PLLSSC_PPM GENMASK(31, 16) +#define PCIE_GLI_9767_SD_EXPRESS_CTL 0x940 +#define PCIE_GLI_9767_SD_EXPRESS_CTL_SDEI_EXE BIT(0) +#define PCIE_GLI_9767_SD_EXPRESS_CTL_SD_EXPRESS_MODE BIT(1) + +#define PCIE_GLI_9767_SD_DATA_MULTI_CTL 0x944 +#define PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME GENMASK(23, 16) +#define PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME_VALUE 0x64 + +#define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2 0x950 +#define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE BIT(0) + +#define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2 0x954 +#define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2_SDEI_COMPLETE_STATUS_EN BIT(0) + +#define PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2 0x958 +#define PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2_SDEI_COMPLETE_SIGNAL_EN BIT(0) + #define GLI_MAX_TUNING_LOOP 40 /* Genesys Logic chipset */ @@ -935,6 +959,93 @@ static void sdhci_gl9767_reset(struct sdhci_host *host, u8 mask) gli_set_9767(host); } +static int gl9767_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct sdhci_host *host = mmc_priv(mmc); + struct sdhci_pci_slot *slot = sdhci_priv(host); + struct pci_dev *pdev; + u32 value; + int i; + + pdev = slot->chip->pdev; + + if (mmc->ops->get_ro(mmc)) { + mmc->ios.timing &= ~(MMC_TIMING_SD_EXP | MMC_TIMING_SD_EXP_1_2V); + return 0; + } + + gl9767_vhs_write(pdev); + + pci_read_config_dword(pdev, PCIE_GLI_9767_COMBO_MUX_CTL, &value); + value &= ~(PCIE_GLI_9767_COMBO_MUX_CTL_RST_EN | PCIE_GLI_9767_COMBO_MUX_CTL_WAIT_PERST_EN); + pci_write_config_dword(pdev, PCIE_GLI_9767_COMBO_MUX_CTL, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, &value); + value &= ~PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME; + value |= FIELD_PREP(PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME, + PCIE_GLI_9767_SD_DATA_MULTI_CTL_DISCONNECT_TIME_VALUE); + pci_write_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, &value); + value |= PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE; + pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2, &value); + value |= PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2_SDEI_COMPLETE_STATUS_EN; + pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_EN_REG2, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2, &value); + value |= PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2_SDEI_COMPLETE_SIGNAL_EN; + pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_SIGNAL_EN_REG2, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_CFG, &value); + value |= PCIE_GLI_9767_CFG_LOW_PWR_OFF; + pci_write_config_dword(pdev, PCIE_GLI_9767_CFG, value); + + value = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + value &= ~(SDHCI_CLOCK_CARD_EN | SDHCI_CLOCK_PLL_EN); + sdhci_writew(host, value, SDHCI_CLOCK_CONTROL); + + value = sdhci_readb(host, SDHCI_POWER_CONTROL); + value |= (SDHCI_VDD2_POWER_180 | SDHCI_VDD2_POWER_ON); + sdhci_writeb(host, value, SDHCI_POWER_CONTROL); + + pci_read_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, &value); + value |= PCIE_GLI_9767_SD_EXPRESS_CTL_SDEI_EXE; + pci_write_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, value); + + for (i = 0; i < 2; i++) { + msleep(10); + pci_read_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, &value); + if (value & PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE) { + pci_write_config_dword(pdev, PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2, + value); + break; + } + } + + pci_read_config_dword(pdev, PCIE_GLI_9767_SDHC_CAP, &value); + if (value & PCIE_GLI_9767_SDHC_CAP_SDEI_RESULT) { + pci_read_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, &value); + value |= PCIE_GLI_9767_SD_EXPRESS_CTL_SD_EXPRESS_MODE; + pci_write_config_dword(pdev, PCIE_GLI_9767_SD_EXPRESS_CTL, value); + } else { + mmc->ios.timing &= ~(MMC_TIMING_SD_EXP | MMC_TIMING_SD_EXP_1_2V); + + value = sdhci_readb(host, SDHCI_POWER_CONTROL); + value &= ~(SDHCI_VDD2_POWER_180 | SDHCI_VDD2_POWER_ON); + sdhci_writeb(host, value, SDHCI_POWER_CONTROL); + + value = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + value |= (SDHCI_CLOCK_CARD_EN | SDHCI_CLOCK_PLL_EN); + sdhci_writew(host, value, SDHCI_CLOCK_CONTROL); + } + + gl9767_vhs_read(pdev); + + return 0; +} + static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot) { struct sdhci_host *host = slot->host; @@ -967,6 +1078,8 @@ static int gli_probe_slot_gl9767(struct sdhci_pci_slot *slot) gl9767_hw_setting(slot); gli_pcie_enable_msi(slot); slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO; + host->mmc->caps2 |= MMC_CAP2_SD_EXP; + host->mmc_host_ops.init_sd_express = gl9767_init_sd_express; sdhci_enable_v4_mode(host); return 0;