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AJvYcCU0O0haKOFA0mJR6Wjq17i4SWFN8EPk+2o5cYsSBTY52u2Qut2AGyyatxueL4QoZKM9fT+bTZ8Ooxmb89w=@vger.kernel.org X-Gm-Message-State: AOJu0Yye88mlxF9dCMyp5YK/CfFDtl4EL/oW3FJDiUMwoPEqCWISUYOJ SdzE4RAh5mcg8HRzD7rD3DF40TDiZf07652Jn1gcaV4Y3S46fa3Z X-Google-Smtp-Source: AGHT+IGMLaSIB+PdxH1nfzOjbhvMJqYwAwRkyVlu5GMWPaLjEufmBU6eDFFrGXbPYtVQnJSRRkTiVA== X-Received: by 2002:a17:902:e804:b0:202:4b65:65af with SMTP id d9443c01a7336-20546b35a4cmr214335855ad.52.1725531701689; Thu, 05 Sep 2024 03:21:41 -0700 (PDT) Received: from localhost.localdomain ([2402:7500:569:244d:9999:a704:87a3:25c6]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-206aea3855asm25979245ad.144.2024.09.05.03.21.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Sep 2024 03:21:41 -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, Lucas.Lai@genesyslogic.com.tw, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, dlunev@chromium.org, Victor Shih , Ben Chuang , Victor Shih , Lucas Lai Subject: [PATCH V20 22/22] mmc: sdhci-pci-gli: enable UHS-II mode for GL9767 Date: Thu, 5 Sep 2024 18:20:00 +0800 Message-Id: <20240905102000.5020-23-victorshihgli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240905102000.5020-1-victorshihgli@gmail.com> References: <20240905102000.5020-1-victorshihgli@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Victor Shih Changes are: * Enable the internal clock when do reset on UHS-II mode. * Increase timeout value before detecting UHS-II interface. * Add vendor settings for UHS-II mode. * Use the function sdhci_gli_wait_software_reset_done() for gl9767 reset. Signed-off-by: Ben Chuang Signed-off-by: Victor Shih Signed-off-by: Lucas Lai --- Updates in V20: - Use the function sdhci_gli_wait_software_reset_done() for gl9767 reset. Updates in V19: - Use sdhci_gli_enable_internal_clock() to simplify the code in the sdhci_gl9767_reset(). - Directly reading the SDHCI_PRESENT_STATE register to replace the get_cd() avoids the possibility of the get_cd() sleeping in the sdhci_gl9767_set_card_detect_debounce_time(). - Refine the position of gli_set_9767() in the sdhci_gl9767_reset(). Updates in V18: - Add new register settings for gl9767. - Add card_event in the sdhci_ops for gl9767. - Add sdhci_gl9767_set_card_detect_debounce_time() to configure the gl9767. - Adjust the sdhci_gl9767_reset() process for gl9767. Updates in V17: - Use mmc_card_uhs2() to simplify the code in the sdhci_gl9767_reset(). - Use mmc_card_uhs2() to simplify the code in the sdhci_gl9767_set_power(). - Add sdhci_gli_overcurrent_event_enable() to sdhci_gl9767_set_power(). Updates in V15: - Add gl9767 to support uhs2 function. --- drivers/mmc/host/sdhci-pci-gli.c | 203 ++++++++++++++++++++++++++++++- 1 file changed, 202 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c index 7cf27a666f34..dd4bd21a6019 100644 --- a/drivers/mmc/host/sdhci-pci-gli.c +++ b/drivers/mmc/host/sdhci-pci-gli.c @@ -174,6 +174,15 @@ #define PCI_GLI_9755_MISC 0x78 #define PCI_GLI_9755_MISC_SSC_OFF BIT(26) +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL 0x508 +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_CMD_CONFLICT_CHECK BIT(0) +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE GENMASK(21, 16) +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_PLUG_IN_VALUE 0x05 +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_PLUG_OUT_VALUE 0x3F +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE GENMASK(23, 22) +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE_1MS 0x2 +#define SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE_10MS 0x3 + #define SDHCI_GLI_9767_GM_BURST_SIZE 0x510 #define SDHCI_GLI_9767_GM_BURST_SIZE_AXI_ALWAYS_SET BIT(8) @@ -210,6 +219,13 @@ #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_RESET_REG 0x8E4 +#define PCIE_GLI_9767_RESET_REG_SD_HOST_SW_RESET BIT(0) + +#define PCIE_GLI_9767_UHS2_PHY_SET_REG1 0x90C +#define PCIE_GLI_9767_UHS2_PHY_SET_REG1_SERDES_INTR GENMASK(31, 29) +#define PCIE_GLI_9767_UHS2_PHY_SET_REG1_SERDES_INTR_VALUE 0x3 + #define PCIE_GLI_9767_SDHC_CAP 0x91C #define PCIE_GLI_9767_SDHC_CAP_SDEI_RESULT BIT(5) @@ -228,9 +244,15 @@ #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_SELECT_UHS2 BIT(5) +#define PCIE_GLI_9767_SD_DATA_MULTI_CTL_UHS2_SWITCH_CTL BIT(8) #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_UHS2_PHY_SET_REG2 0x948 +#define PCIE_GLI_9767_UHS2_PHY_SET_REG2_SSC_PPM_SETTING GENMASK(22, 21) +#define PCIE_GLI_9767_UHS2_PHY_SET_REG2_SSC_PPM_SETTING_VALUE 0x0 + #define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2 0x950 #define PCIE_GLI_9767_NORMAL_ERR_INT_STATUS_REG2_SDEI_COMPLETE BIT(0) @@ -240,6 +262,28 @@ #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 PCIE_GLI_9767_UHS2_CTL1 0x95C +#define PCIE_GLI_9767_UHS2_CTL1_TRANS_PASS BIT(5) +#define PCIE_GLI_9767_UHS2_CTL1_TRANS_PASS_VALUE 0x1 +#define PCIE_GLI_9767_UHS2_CTL1_DECODING_CTL BIT(6) +#define PCIE_GLI_9767_UHS2_CTL1_DECODING_CTL_VALUE 0x1 +#define PCIE_GLI_9767_UHS2_CTL1_SERDES_TRAN GENMASK(10, 7) +#define PCIE_GLI_9767_UHS2_CTL1_SERDES_TRAN_VALUE 0x3 +#define PCIE_GLI_9767_UHS2_CTL1_SERDES_RECV GENMASK(14, 11) +#define PCIE_GLI_9767_UHS2_CTL1_SERDES_RECV_VALUE 0xf +#define PCIE_GLI_9767_UHS2_CTL1_DIR_TRANS GENMASK(16, 15) +#define PCIE_GLI_9767_UHS2_CTL1_DIR_TRANS_VALUE 0x0 +#define PCIE_GLI_9767_UHS2_CTL1_DIR_RECV GENMASK(18, 17) +#define PCIE_GLI_9767_UHS2_CTL1_DIR_RECV_VALUE 0x0 +#define PCIE_GLI_9767_UHS2_CTL1_PDRST BIT(25) +#define PCIE_GLI_9767_UHS2_CTL1_PDRST_VALUE 0x1 + +#define PCIE_GLI_9767_UHS2_CTL2 0x964 +#define PCIE_GLI_9767_UHS2_CTL2_ZC GENMASK(3, 0) +#define PCIE_GLI_9767_UHS2_CTL2_ZC_VALUE 0xb +#define PCIE_GLI_9767_UHS2_CTL2_ZC_CTL BIT(6) +#define PCIE_GLI_9767_UHS2_CTL2_ZC_CTL_VALUE 0x1 + #define GLI_MAX_TUNING_LOOP 40 /* Genesys Logic chipset */ @@ -1156,6 +1200,31 @@ static void sdhci_gl9767_set_clock(struct sdhci_host *host, unsigned int clock) gl9767_vhs_read(pdev); } +static void sdhci_gl9767_set_card_detect_debounce_time(struct sdhci_host *host) +{ + u32 value; + + value = sdhci_readl(host, SDHCI_GLI_9767_SD_HOST_OPERATION_CTL); + value &= ~(SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE | + SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE); + if (sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT) + value |= FIELD_PREP(SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE, + SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_PLUG_IN_VALUE) | + FIELD_PREP(SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE, + SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE_1MS); + else + value |= FIELD_PREP(SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE, + SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_PLUG_OUT_VALUE) | + FIELD_PREP(SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE, + SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_DEBOUNCE_SCALE_10MS); + sdhci_writel(host, value, SDHCI_GLI_9767_SD_HOST_OPERATION_CTL); +} + +static void sdhci_gl9767_card_event(struct sdhci_host *host) +{ + sdhci_gl9767_set_card_detect_debounce_time(host); +} + static void gli_set_9767(struct sdhci_host *host) { u32 value; @@ -1163,6 +1232,12 @@ static void gli_set_9767(struct sdhci_host *host) value = sdhci_readl(host, SDHCI_GLI_9767_GM_BURST_SIZE); value &= ~SDHCI_GLI_9767_GM_BURST_SIZE_AXI_ALWAYS_SET; sdhci_writel(host, value, SDHCI_GLI_9767_GM_BURST_SIZE); + + value = sdhci_readl(host, SDHCI_GLI_9767_SD_HOST_OPERATION_CTL); + value &= ~SDHCI_GLI_9767_SD_HOST_OPERATION_CTL_CMD_CONFLICT_CHECK; + sdhci_writel(host, value, SDHCI_GLI_9767_SD_HOST_OPERATION_CTL); + + sdhci_gl9767_set_card_detect_debounce_time(host); } static void gl9767_hw_setting(struct sdhci_pci_slot *slot) @@ -1201,7 +1276,44 @@ static void gl9767_hw_setting(struct sdhci_pci_slot *slot) static void sdhci_gl9767_reset(struct sdhci_host *host, u8 mask) { - sdhci_reset(host, mask); + struct sdhci_pci_slot *slot = sdhci_priv(host); + struct pci_dev *pdev = slot->chip->pdev; + u32 value; + + /* need internal clock */ + if (mask & SDHCI_RESET_ALL) { + sdhci_gli_enable_internal_clock(host); + + gl9767_vhs_write(pdev); + + pci_read_config_dword(pdev, PCIE_GLI_9767_RESET_REG, &value); + value &= ~PCIE_GLI_9767_RESET_REG_SD_HOST_SW_RESET; + pci_write_config_dword(pdev, PCIE_GLI_9767_RESET_REG, value); + + if (read_poll_timeout_atomic(pci_read_config_dword, value, + !(value & PCIE_GLI_9767_RESET_REG_SD_HOST_SW_RESET), + 1, 5, true, pdev, PCIE_GLI_9767_RESET_REG, &value)) { + pr_warn("%s: %s: Reset SDHC AHB and TL-AMBA failure.\n", + __func__, mmc_hostname(host->mmc)); + gl9767_vhs_read(pdev); + return; + } + gl9767_vhs_read(pdev); + } + + if (mmc_card_uhs2(host->mmc)) { + if (mask & (SDHCI_RESET_CMD | SDHCI_RESET_DATA)) { + sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); + sdhci_gli_uhs2_reset_sd_tran(host); + if (sdhci_gli_wait_software_reset_done(host, mask)) + return; + } else { + sdhci_uhs2_reset(host, mask); + } + } else { + sdhci_reset(host, mask); + } + gli_set_9767(host); } @@ -1292,6 +1404,86 @@ static int gl9767_init_sd_express(struct mmc_host *mmc, struct mmc_ios *ios) return 0; } +static void gl9767_vendor_init(struct sdhci_host *host) +{ + struct sdhci_pci_slot *slot = sdhci_priv(host); + struct pci_dev *pdev = slot->chip->pdev; + u32 value; + + gl9767_vhs_write(pdev); + + pci_read_config_dword(pdev, PCIE_GLI_9767_UHS2_PHY_SET_REG1, &value); + value |= FIELD_PREP(PCIE_GLI_9767_UHS2_PHY_SET_REG1_SERDES_INTR, + PCIE_GLI_9767_UHS2_PHY_SET_REG1_SERDES_INTR_VALUE); + pci_write_config_dword(pdev, PCIE_GLI_9767_UHS2_PHY_SET_REG1, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_UHS2_PHY_SET_REG2, &value); + value |= FIELD_PREP(PCIE_GLI_9767_UHS2_PHY_SET_REG2_SSC_PPM_SETTING, + PCIE_GLI_9767_UHS2_PHY_SET_REG2_SSC_PPM_SETTING_VALUE); + pci_write_config_dword(pdev, PCIE_GLI_9767_UHS2_PHY_SET_REG2, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_UHS2_CTL1, &value); + value |= FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_TRANS_PASS, + PCIE_GLI_9767_UHS2_CTL1_TRANS_PASS_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_DECODING_CTL, + PCIE_GLI_9767_UHS2_CTL1_DECODING_CTL_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_SERDES_TRAN, + PCIE_GLI_9767_UHS2_CTL1_SERDES_TRAN_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_SERDES_RECV, + PCIE_GLI_9767_UHS2_CTL1_SERDES_RECV_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_DIR_TRANS, + PCIE_GLI_9767_UHS2_CTL1_DIR_TRANS_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_DIR_RECV, + PCIE_GLI_9767_UHS2_CTL1_DIR_RECV_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL1_PDRST, + PCIE_GLI_9767_UHS2_CTL1_PDRST_VALUE); + pci_write_config_dword(pdev, PCIE_GLI_9767_UHS2_CTL1, value); + + pci_read_config_dword(pdev, PCIE_GLI_9767_UHS2_CTL2, &value); + value |= FIELD_PREP(PCIE_GLI_9767_UHS2_CTL2_ZC, + PCIE_GLI_9767_UHS2_CTL2_ZC_VALUE) | + FIELD_PREP(PCIE_GLI_9767_UHS2_CTL2_ZC_CTL, + PCIE_GLI_9767_UHS2_CTL2_ZC_CTL_VALUE); + pci_write_config_dword(pdev, PCIE_GLI_9767_UHS2_CTL2, value); + + gl9767_vhs_read(pdev); +} + +static void sdhci_gl9767_set_power(struct sdhci_host *host, unsigned char mode, unsigned short vdd) +{ + struct sdhci_pci_slot *slot = sdhci_priv(host); + struct pci_dev *pdev = slot->chip->pdev; + u32 value; + + if (mmc_card_uhs2(host->mmc)) { + gl9767_vhs_write(pdev); + + pci_read_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, &value); + value |= PCIE_GLI_9767_SD_DATA_MULTI_CTL_SELECT_UHS2 | + PCIE_GLI_9767_SD_DATA_MULTI_CTL_UHS2_SWITCH_CTL; + pci_write_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, value); + + gl9767_vhs_read(pdev); + + sdhci_gli_overcurrent_event_enable(host, false); + sdhci_uhs2_set_power(host, mode, vdd); + sdhci_gli_overcurrent_event_enable(host, true); + } else { + gl9767_vhs_write(pdev); + + pci_read_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, &value); + value &= ~(PCIE_GLI_9767_SD_DATA_MULTI_CTL_SELECT_UHS2 | + PCIE_GLI_9767_SD_DATA_MULTI_CTL_UHS2_SWITCH_CTL); + pci_write_config_dword(pdev, PCIE_GLI_9767_SD_DATA_MULTI_CTL, value); + + gl9767_vhs_read(pdev); + + sdhci_gli_overcurrent_event_enable(host, false); + sdhci_set_power(host, mode, vdd); + sdhci_gli_overcurrent_event_enable(host, true); + } +} + static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot) { struct sdhci_host *host = slot->host; @@ -1328,6 +1520,7 @@ static int gli_probe_slot_gl9767(struct sdhci_pci_slot *slot) host->mmc->caps2 |= MMC_CAP2_SD_EXP; host->mmc_host_ops.init_sd_express = gl9767_init_sd_express; sdhci_enable_v4_mode(host); + gl9767_vendor_init(host); return 0; } @@ -1831,12 +2024,20 @@ static const struct sdhci_ops sdhci_gl9767_ops = { .reset = sdhci_gl9767_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, .voltage_switch = sdhci_gl9767_voltage_switch, + .dump_uhs2_regs = sdhci_uhs2_dump_regs, + .set_timeout = sdhci_uhs2_set_timeout, + .irq = sdhci_uhs2_irq, + .set_power = sdhci_gl9767_set_power, + .uhs2_pre_detect_init = sdhci_gli_pre_detect_init, + .card_event = sdhci_gl9767_card_event, }; const struct sdhci_pci_fixes sdhci_gl9767 = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .quirks2 = SDHCI_QUIRK2_BROKEN_DDR50, .probe_slot = gli_probe_slot_gl9767, + .add_host = sdhci_pci_uhs2_add_host, + .remove_host = sdhci_pci_uhs2_remove_host, .ops = &sdhci_gl9767_ops, #ifdef CONFIG_PM_SLEEP .resume = sdhci_pci_gli_resume,