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[60.251.58.169]) by smtp.gmail.com with ESMTPSA id o184sm47447689pgo.62.2019.12.30.03.39.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Dec 2019 03:39:25 -0800 (PST) From: Ben Chuang To: adrian.hunter@intel.com, ulf.hansson@linaro.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, ben.chuang@genesyslogic.com.tw, greg.tu@genesyslogic.com.tw, Ben Chuang Subject: [RFC,PATCH 3/6] mmc: host: Add UHS-II support in host layer Date: Mon, 30 Dec 2019 19:39:37 +0800 Message-Id: <20191230113937.38046-1-benchuanggli@gmail.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Ben Chuang Add UHS-II support in host layer Signed-off-by: Ben Chuang --- drivers/mmc/host/Makefile | 1 + drivers/mmc/host/{sdhci.c => sdhci-core.c} | 276 ++++++-- drivers/mmc/host/sdhci-of-arasan.c | 4 +- drivers/mmc/host/sdhci-of-at91.c | 6 +- drivers/mmc/host/sdhci-omap.c | 2 +- drivers/mmc/host/sdhci-pci-core.c | 4 +- drivers/mmc/host/sdhci-pxav3.c | 4 +- drivers/mmc/host/sdhci-uhs2.c | 751 +++++++++++++++++++++ drivers/mmc/host/sdhci-uhs2.h | 34 + drivers/mmc/host/sdhci-xenon.c | 4 +- drivers/mmc/host/sdhci.h | 284 +++++++- drivers/mmc/host/sdhci_am654.c | 4 +- include/linux/mmc/uhs2.h | 270 ++++++++ 13 files changed, 1582 insertions(+), 62 deletions(-) rename drivers/mmc/host/{sdhci.c => sdhci-core.c} (94%) create mode 100644 drivers/mmc/host/sdhci-uhs2.c create mode 100644 drivers/mmc/host/sdhci-uhs2.h create mode 100644 include/linux/mmc/uhs2.h diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 11c4598e91d9..54fa6511dd48 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_MMC_PXA) += pxamci.o obj-$(CONFIG_MMC_MXC) += mxcmmc.o obj-$(CONFIG_MMC_MXS) += mxs-mmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o +sdhci-y += sdhci-core.o sdhci-uhs2.o obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o sdhci-pci-y += sdhci-pci-core.o sdhci-pci-o2micro.o sdhci-pci-arasan.o \ sdhci-pci-dwc-mshc.o sdhci-pci-gli.o diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci-core.c similarity index 94% rename from drivers/mmc/host/sdhci.c rename to drivers/mmc/host/sdhci-core.c index b056400e34b1..8f396d1de208 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci-core.c @@ -30,8 +30,12 @@ #include #include #include +#include +#include #include "sdhci.h" +#include "sdhci-uhs2.h" +#include "sdhci-pci.h" #define DRIVER_NAME "sdhci" @@ -46,10 +50,6 @@ static unsigned int debug_quirks = 0; static unsigned int debug_quirks2; -static void sdhci_finish_data(struct sdhci_host *); - -static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); - void sdhci_dumpregs(struct sdhci_host *host) { SDHCI_DUMP("============ SDHCI REGISTER DUMP ===========\n"); @@ -109,6 +109,29 @@ void sdhci_dumpregs(struct sdhci_host *host) } } + if (host->mmc && host->mmc->flags & MMC_UHS2_SUPPORT) { + SDHCI_DUMP("==================== UHS2 ==================\n"); + SDHCI_DUMP("Blk Size: 0x%08x | Blk Cnt: 0x%08x\n", + sdhci_readw(host, SDHCI_UHS2_BLOCK_SIZE), + sdhci_readl(host, SDHCI_UHS2_BLOCK_COUNT)); + SDHCI_DUMP("Cmd: 0x%08x | Trn mode: 0x%08x\n", + sdhci_readw(host, SDHCI_UHS2_COMMAND), + sdhci_readw(host, SDHCI_UHS2_TRANS_MODE)); + SDHCI_DUMP("Int Stat: 0x%08x | Dev Sel : 0x%08x\n", + sdhci_readw(host, SDHCI_UHS2_DEV_INT_STATUS), + sdhci_readb(host, SDHCI_UHS2_DEV_SELECT)); + SDHCI_DUMP("Dev Int Code: 0x%08x\n", + sdhci_readb(host, SDHCI_UHS2_DEV_INT_CODE)); + SDHCI_DUMP("Reset: 0x%08x | Timer: 0x%08x\n", + sdhci_readw(host, SDHCI_UHS2_SW_RESET), + sdhci_readw(host, SDHCI_UHS2_TIMER_CTRL)); + SDHCI_DUMP("ErrInt: 0x%08x | ErrIntEn: 0x%08x\n", + sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS), + sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS_EN)); + SDHCI_DUMP("ErrSigEn: 0x%08x\n", + sdhci_readl(host, SDHCI_UHS2_ERR_INT_SIG_EN)); + } + SDHCI_DUMP("============================================\n"); } EXPORT_SYMBOL_GPL(sdhci_dumpregs); @@ -187,13 +210,14 @@ static void sdhci_runtime_pm_bus_on(struct sdhci_host *host) pm_runtime_get_noresume(host->mmc->parent); } -static void sdhci_runtime_pm_bus_off(struct sdhci_host *host) +void sdhci_runtime_pm_bus_off(struct sdhci_host *host) { if (!host->bus_on) return; host->bus_on = false; pm_runtime_put_noidle(host->mmc->parent); } +EXPORT_SYMBOL_GPL(sdhci_runtime_pm_bus_off); void sdhci_reset(struct sdhci_host *host, u8 mask) { @@ -1011,6 +1035,9 @@ static void sdhci_set_timeout(struct sdhci_host *host, struct mmc_command *cmd) } sdhci_writeb(host, count, SDHCI_TIMEOUT_CONTROL); + + if (host->mmc->flags & MMC_UHS2_SUPPORT) + sdhci_uhs2_set_timeout(host); } } @@ -1122,21 +1149,29 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) sdhci_set_transfer_irqs(host); - /* Set the DMA boundary value and block size */ - sdhci_writew(host, SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz), - SDHCI_BLOCK_SIZE); - - /* - * For Version 4.10 onwards, if v4 mode is enabled, 32-bit Block Count - * can be supported, in that case 16-bit block count register must be 0. - */ - if (host->version >= SDHCI_SPEC_410 && host->v4_mode && - (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) { - if (sdhci_readw(host, SDHCI_BLOCK_COUNT)) - sdhci_writew(host, 0, SDHCI_BLOCK_COUNT); - sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT); + if (host->mmc->flags & MMC_UHS2_SUPPORT && + host->mmc->flags & MMC_UHS2_INITIALIZED) { + sdhci_writew(host, data->blksz, SDHCI_UHS2_BLOCK_SIZE); + sdhci_writew(host, data->blocks, SDHCI_UHS2_BLOCK_COUNT); } else { - sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); + /* Set the DMA boundary value and block size */ + sdhci_writew(host, + SDHCI_MAKE_BLKSZ(host->sdma_boundary, data->blksz), + SDHCI_BLOCK_SIZE); + + /* + * For Version 4.10 onwards, if v4 mode is enabled, 32-bit + * Block Count can be supported, in that case 16-bit block + * count register must be 0. + */ + if (host->version >= SDHCI_SPEC_410 && host->v4_mode && + (host->quirks2 & SDHCI_QUIRK2_USE_32BIT_BLK_CNT)) { + if (sdhci_readw(host, SDHCI_BLOCK_COUNT)) + sdhci_writew(host, 0, SDHCI_BLOCK_COUNT); + sdhci_writew(host, data->blocks, SDHCI_32BIT_BLK_CNT); + } else { + sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); + } } } @@ -1190,6 +1225,11 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host, u16 mode = 0; struct mmc_data *data = cmd->data; + if (host->mmc->flags & MMC_UHS2_SUPPORT) { + sdhci_uhs2_set_transfer_mode(host, cmd); + return; + } + if (data == NULL) { if (host->quirks2 & SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD) { @@ -1272,14 +1312,15 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq) sdhci_led_deactivate(host); } -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); queue_work(host->complete_wq, &host->complete_work); } +EXPORT_SYMBOL_GPL(sdhci_finish_mrq); -static void sdhci_finish_data(struct sdhci_host *host) +void sdhci_finish_data(struct sdhci_host *host) { struct mmc_command *data_cmd = host->data_cmd; struct mmc_data *data = host->data; @@ -1313,6 +1354,11 @@ static void sdhci_finish_data(struct sdhci_host *host) else data->bytes_xfered = data->blksz * data->blocks; + if (host->mmc->flags & MMC_UHS2_INITIALIZED) { + __sdhci_finish_mrq(host, data->mrq); + return; + } + /* * Need to send CMD12 if - * a) open-ended multiblock transfer (no CMD23) @@ -1337,6 +1383,7 @@ static void sdhci_finish_data(struct sdhci_host *host) __sdhci_finish_mrq(host, data->mrq); } } +EXPORT_SYMBOL_GPL(sdhci_finish_data); void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) { @@ -1386,8 +1433,6 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) sdhci_prepare_data(host, cmd); - sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); - sdhci_set_transfer_mode(host, cmd); if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) { @@ -1426,6 +1471,12 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) timeout += 10 * HZ; sdhci_mod_timer(host, cmd->mrq, timeout); + if (host->mmc->flags & MMC_UHS2_SUPPORT) { + sdhci_uhs2_send_command(host, cmd); + return; + } + sdhci_writel(host, cmd->arg, SDHCI_ARGUMENT); + sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); } EXPORT_SYMBOL_GPL(sdhci_send_command); @@ -1453,10 +1504,13 @@ static void sdhci_read_rsp_136(struct sdhci_host *host, struct mmc_command *cmd) static void sdhci_finish_command(struct sdhci_host *host) { struct mmc_command *cmd = host->cmd; + int uhs2_flag = 0; - host->cmd = NULL; - - if (cmd->flags & MMC_RSP_PRESENT) { + if (host->mmc->flags & MMC_UHS2_SUPPORT) { + sdhci_uhs2_finish_command(host); + uhs2_flag = 1; + } else if (cmd->flags & MMC_RSP_PRESENT) { + host->cmd = NULL; if (cmd->flags & MMC_RSP_136) { sdhci_read_rsp_136(host, cmd); } else { @@ -1464,6 +1518,9 @@ static void sdhci_finish_command(struct sdhci_host *host) } } + if (!uhs2_flag) + host->cmd = NULL; + if (cmd->mrq->cap_cmd_during_tfr && cmd == cmd->mrq->cmd) mmc_command_done(host->mmc, cmd->mrq); @@ -1483,6 +1540,7 @@ static void sdhci_finish_command(struct sdhci_host *host) } else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) && cmd == host->data_cmd) { /* Command complete before busy is ended */ + host->cmd = NULL; return; } } @@ -1499,6 +1557,8 @@ static void sdhci_finish_command(struct sdhci_host *host) if (!cmd->data) __sdhci_finish_mrq(host, cmd->mrq); } + + host->cmd = NULL; } static u16 sdhci_get_preset_value(struct sdhci_host *host) @@ -1526,6 +1586,9 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host) case MMC_TIMING_MMC_HS400: preset = sdhci_readw(host, SDHCI_PRESET_FOR_HS400); break; + case MMC_TIMING_UHS2: + preset = sdhci_readw(host, SDHCI_PRESET_FOR_UHS2); + break; default: pr_warn("%s: Invalid UHS-I mode selected\n", mmc_hostname(host->mmc)); @@ -1697,12 +1760,16 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) EXPORT_SYMBOL_GPL(sdhci_set_clock); static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { struct mmc_host *mmc = host->mmc; mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); + if (mmc->caps & MMC_CAP_UHS2 && + !IS_ERR(mmc->supply.vmmc2)) + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc2, vdd2); + if (mode != MMC_POWER_OFF) sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL); else @@ -1710,7 +1777,7 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode, } void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { u8 pwr = 0; @@ -1741,6 +1808,20 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, } } + if (mode != MMC_POWER_OFF) { + if (vdd2 != (unsigned short)-1) { + switch (1 << vdd2) { + case MMC_VDD2_165_195: + pwr |= SDHCI_VDD2_POWER_180; + break; + default: + WARN(1, "%s: Invalid vdd2 %#x\n", + mmc_hostname(host->mmc), vdd2); + break; + } + } + } + if (host->pwr == pwr) return; @@ -1767,8 +1848,13 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); pwr |= SDHCI_POWER_ON; + if (vdd2 != (unsigned short)-1) + pwr |= SDHCI_VDD2_POWER_ON; + sdhci_writeb(host, pwr&0xf, SDHCI_POWER_CONTROL); + mdelay(5); sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); + mdelay(5); if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) sdhci_runtime_pm_bus_on(host); @@ -1784,12 +1870,12 @@ void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, EXPORT_SYMBOL_GPL(sdhci_set_power_noreg); void sdhci_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { if (IS_ERR(host->mmc->supply.vmmc)) - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, vdd2); else - sdhci_set_power_reg(host, mode, vdd); + sdhci_set_power_reg(host, mode, vdd, vdd2); } EXPORT_SYMBOL_GPL(sdhci_set_power); @@ -1890,6 +1976,7 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct sdhci_host *host = mmc_priv(mmc); u8 ctrl; + u16 ctrl_2; if (ios->power_mode == MMC_POWER_UNDEFINED) return; @@ -1898,6 +1985,10 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (!IS_ERR(mmc->supply.vmmc) && ios->power_mode == MMC_POWER_OFF) mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0); + if (host->mmc->caps & MMC_CAP_UHS2 && + !IS_ERR(mmc->supply.vmmc2) && + ios->power_mode == MMC_POWER_OFF) + mmc_regulator_set_ocr(mmc, mmc->supply.vmmc2, 0); return; } @@ -1916,6 +2007,9 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) sdhci_enable_preset_value(host, false); if (!ios->clock || ios->clock != host->clock) { + if (ios->timing == MMC_TIMING_UHS2) + host->timing = ios->timing; + host->ops->set_clock(host, ios->clock); host->clock = ios->clock; @@ -1933,9 +2027,19 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } if (host->ops->set_power) - host->ops->set_power(host, ios->power_mode, ios->vdd); + host->ops->set_power(host, ios->power_mode, ios->vdd, -1); else - sdhci_set_power(host, ios->power_mode, ios->vdd); + sdhci_set_power(host, ios->power_mode, ios->vdd, -1); + + /* 4.0 host support */ + if (host->version >= SDHCI_SPEC_400) { + /* UHS2 Support */ + if (host->mmc->flags & MMC_UHS2_SUPPORT && + host->mmc->caps & MMC_CAP_UHS2) { + sdhci_uhs2_do_set_ios(host, ios); + return; + } + } if (host->ops->platform_send_init_74_clocks) host->ops->platform_send_init_74_clocks(host, ios->power_mode); @@ -1960,7 +2064,7 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } if (host->version >= SDHCI_SPEC_300) { - u16 clk, ctrl_2; + u16 clk; if (!host->preset_enabled) { sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); @@ -2172,8 +2276,12 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, /* * Signal Voltage Switching is only applicable for Host Controllers * v3.00 and above. + * But for UHS2, the signal voltage is supplied by vdd2 which is + * already 1.8v so no voltage siwtch required. */ - if (host->version < SDHCI_SPEC_300) + if (host->version < SDHCI_SPEC_300 || + (host->version >= SDHCI_SPEC_400 && + host->flags & SDHCI_USE_UHS2)) return 0; ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); @@ -2502,7 +2610,7 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) } EXPORT_SYMBOL_GPL(sdhci_execute_tuning); -static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) +void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) { /* Host Controller v3.00 defines preset value registers */ if (host->version < SDHCI_SPEC_300) @@ -2530,6 +2638,7 @@ static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable) host->preset_enabled = enable; } } +EXPORT_SYMBOL_GPL(sdhci_enable_preset_value); static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq, int err) @@ -2602,6 +2711,64 @@ static void sdhci_card_event(struct mmc_host *mmc) spin_unlock_irqrestore(&host->lock, flags); } +static int sdhci_uhs2_detect_init(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + int ret; + + ret = sdhci_uhs2_do_detect_init(host); + + return ret; +} + +static int sdhci_uhs2_set_reg(struct mmc_host *mmc, enum uhs2_act act) +{ + struct sdhci_host *host = mmc_priv(mmc); + int ret; + + ret = sdhci_uhs2_do_set_reg(host, act); + + return ret; +} + +void sdhci_uhs2_disable_clk(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + u16 clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + + clk &= ~SDHCI_CLOCK_CARD_EN; + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_disable_clk); + +void sdhci_uhs2_enable_clk(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + u16 clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + ktime_t timeout; + + clk |= SDHCI_CLOCK_CARD_EN; + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); + + /* Wait max 20 ms */ + timeout = ktime_add_ms(ktime_get(), 20); + while (1) { + bool timedout = ktime_after(ktime_get(), timeout); + + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); + if (clk & SDHCI_CLOCK_INT_STABLE) + break; + if (timedout) { + pr_err("%s: Internal clock never stabilised.\n", + mmc_hostname(host->mmc)); + sdhci_dumpregs(host); + return; + } + udelay(10); + } +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_enable_clk); + static const struct mmc_host_ops sdhci_ops = { .request = sdhci_request, .post_req = sdhci_post_req, @@ -2617,6 +2784,10 @@ static const struct mmc_host_ops sdhci_ops = { .execute_tuning = sdhci_execute_tuning, .card_event = sdhci_card_event, .card_busy = sdhci_card_busy, + .uhs2_detect_init = sdhci_uhs2_detect_init, + .uhs2_set_reg = sdhci_uhs2_set_reg, + .uhs2_disable_clk = sdhci_uhs2_disable_clk, + .uhs2_enable_clk = sdhci_uhs2_enable_clk, }; /*****************************************************************************\ @@ -2717,11 +2888,16 @@ static bool sdhci_request_done(struct sdhci_host *host) /* This is to force an update */ host->ops->set_clock(host, host->clock); - /* Spec says we should do both at the same time, but Ricoh - controllers do not like that. */ - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); - + if (host->mmc->flags & MMC_UHS2_INITIALIZED) { + sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_SD); + } else { + /* + * Spec says we should do both at the same time, but + * Ricoh controllers do not like that. + */ + sdhci_do_reset(host, SDHCI_RESET_CMD); + sdhci_do_reset(host, SDHCI_RESET_DATA); + } host->pending_reset = false; } @@ -3073,6 +3249,11 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) SDHCI_INT_BUS_POWER); sdhci_writel(host, mask, SDHCI_INT_STATUS); + if (intmask & SDHCI_INT_ERROR && + host->mmc->flags & MMC_UHS2_SUPPORT) { + sdhci_uhs2_irq(host); + } + if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) { u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT; @@ -3758,6 +3939,13 @@ int sdhci_setup_host(struct sdhci_host *host) mmc_hostname(mmc), host->version); } + if ((host->version >= SDHCI_SPEC_400) && + (host->caps1 & SDHCI_SUPPORT_UHS2) && + host->v4_mode) { + mmc->caps |= MMC_CAP_UHS2; + mmc->flags |= MMC_UHS2_SUPPORT; + } + if (host->quirks & SDHCI_QUIRK_FORCE_DMA) host->flags |= SDHCI_USE_SDMA; else if (!(host->caps & SDHCI_CAN_DO_SDMA)) @@ -4236,6 +4424,9 @@ int sdhci_setup_host(struct sdhci_host *host) /* This may alter mmc->*_blk_* parameters */ sdhci_allocate_bounce_buffer(host); + if (host->version >= SDHCI_SPEC_400) + sdhci_uhs2_add_host(host, host->caps1); + return 0; unreg: @@ -4320,6 +4511,7 @@ int __sdhci_add_host(struct sdhci_host *host) unled: sdhci_led_unregister(host); unirq: + sdhci_uhs2_remove_host(host, 0); sdhci_do_reset(host, SDHCI_RESET_ALL); sdhci_writel(host, 0, SDHCI_INT_ENABLE); sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); @@ -4377,6 +4569,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) sdhci_led_unregister(host); + sdhci_uhs2_remove_host(host, dead); + if (!dead) sdhci_do_reset(host, SDHCI_RESET_ALL); diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index 7023cbec4017..72f2ed144f4f 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -286,14 +286,14 @@ static int sdhci_arasan_voltage_switch(struct mmc_host *mmc, } static void sdhci_arasan_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { if (!IS_ERR(host->mmc->supply.vmmc)) { struct mmc_host *mmc = host->mmc; mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); } - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, -1); } static const struct sdhci_ops sdhci_arasan_ops = { diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c index 0ae986c42bc8..1c7933fa05b6 100644 --- a/drivers/mmc/host/sdhci-of-at91.c +++ b/drivers/mmc/host/sdhci-of-at91.c @@ -96,14 +96,14 @@ static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock) * an external regulator. */ static void sdhci_at91_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { if (!IS_ERR(host->mmc->supply.vmmc)) { struct mmc_host *mmc = host->mmc; mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); } - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, -1); } static void sdhci_at91_set_uhs_signaling(struct sdhci_host *host, @@ -358,7 +358,7 @@ static int sdhci_at91_probe(struct platform_device *pdev) pm_runtime_use_autosuspend(&pdev->dev); /* HS200 is broken at this moment */ - host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200; + host->quirks2 = SDHCI_QUIRK2_BROKEN_HS200; ret = sdhci_add_host(host); if (ret) diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index 083e7e053c95..3b59c20e5f58 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -671,7 +671,7 @@ static void sdhci_omap_set_clock(struct sdhci_host *host, unsigned int clock) } static void sdhci_omap_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { struct mmc_host *mmc = host->mmc; diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index eaffa85bc728..8ca8b953a83d 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -628,12 +628,12 @@ static int bxt_get_cd(struct mmc_host *mmc) #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { int cntr; u8 reg; - sdhci_set_power(host, mode, vdd); + sdhci_set_power(host, mode, vdd, -1); if (mode == MMC_POWER_OFF) return; diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index e55037ceda73..457e9425339a 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -298,12 +298,12 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) } static void pxav3_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { struct mmc_host *mmc = host->mmc; u8 pwr = host->pwr; - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, -1); if (host->pwr == pwr) return; diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c new file mode 100644 index 000000000000..49bda02dd305 --- /dev/null +++ b/drivers/mmc/host/sdhci-uhs2.c @@ -0,0 +1,751 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * linux/drivers/mmc/host/sdhci_uhs2.c - Secure Digital Host Controller + * Interface driver + * + * Copyright (C) 2014 Intel Corp, All Rights Reserved. + */ + +#include +#include + +#include + +#include "sdhci.h" +#include "sdhci-uhs2.h" + +#define DRIVER_NAME "sdhci_uhs2" +#define DBG(f, x...) \ + pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x) + +static void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) +{ + u32 ier; + + ier = sdhci_readl(host, SDHCI_INT_ENABLE); + ier &= ~clear; + ier |= set; + sdhci_writel(host, ier, SDHCI_INT_ENABLE); + sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); +} + +void sdhci_uhs2_clear_set_irqs(struct sdhci_host *host, u32 clear, + u32 set) +{ + u32 ier; + + ier = sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS_EN); + ier &= ~clear; + ier |= set; + sdhci_writel(host, ier, SDHCI_UHS2_ERR_INT_STATUS_EN); + sdhci_writel(host, ier, SDHCI_UHS2_ERR_INT_SIG_EN); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_clear_set_irqs); + +void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask) +{ + unsigned long timeout; + + if (!(host->mmc->caps & MMC_CAP_UHS2)) + return; + + sdhci_writew(host, mask, SDHCI_UHS2_SW_RESET); + + if (mask & SDHCI_UHS2_SW_RESET_FULL) { + host->clock = 0; + /* Reset-all turns off SD Bus Power */ + if (host->quirks2 & SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON) + sdhci_runtime_pm_bus_off(host); + } + + /* Wait max 100 ms */ + timeout = 10000; + + /* hw clears the bit when it's done */ + while (sdhci_readw(host, SDHCI_UHS2_SW_RESET) & mask) { + if (timeout == 0) { + pr_err("%s: %s: Reset 0x%x never completed.\n", + __func__, mmc_hostname(host->mmc), (int)mask); + pr_err("%s: clean reset bit\n", + mmc_hostname(host->mmc)); + sdhci_writeb(host, 0, SDHCI_UHS2_SW_RESET); + return; + } + timeout--; + udelay(10); + } +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_reset); + +static u8 sdhci_calc_timeout_uhs2(struct sdhci_host *host, u8 *cmd_res, u8 *dead_lock) +{ + u8 count; + unsigned int cmd_res_timeout, dead_lock_timeout, current_timeout; + + /* + * If the host controller provides us with an incorrect timeout + * value, just skip the check and use 0xE. The hardware may take + * longer to time out, but that's much better than having a too-short + * timeout value. + */ + if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL) { + *cmd_res = 0xE; + *dead_lock = 0xE; + return 0xE; + } + + /* timeout in us */ + cmd_res_timeout = 5 * 1000; + dead_lock_timeout = 1 * 1000 * 1000; + + /* + * Figure out needed cycles. + * We do this in steps in order to fit inside a 32 bit int. + * The first step is the minimum timeout, which will have a + * minimum resolution of 6 bits: + * (1) 2^13*1000 > 2^22, + * (2) host->timeout_clk < 2^16 + * => + * (1) / (2) > 2^6 + */ + count = 0; + current_timeout = (1 << 13) * 1000 / host->timeout_clk; + while (current_timeout < cmd_res_timeout) { + count++; + current_timeout <<= 1; + if (count >= 0xF) + break; + } + + if (count >= 0xF) { + DBG("%s: Too large timeout 0x%x requested for CMD_RES!\n", + mmc_hostname(host->mmc), count); + count = 0xE; + } + *cmd_res = count; + + count = 0; + current_timeout = (1 << 13) * 1000 / host->timeout_clk; + while (current_timeout < dead_lock_timeout) { + count++; + current_timeout <<= 1; + if (count >= 0xF) + break; + } + + if (count >= 0xF) { + DBG("%s: Too large timeout 0x%x requested for DEADLOCK!\n", + mmc_hostname(host->mmc), count); + count = 0xE; + } + *dead_lock = count; + + return count; +} + +void sdhci_uhs2_set_timeout(struct sdhci_host *host) +{ + u8 cmd_res, dead_lock; + + sdhci_calc_timeout_uhs2(host, &cmd_res, &dead_lock); + cmd_res |= dead_lock << SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT; + sdhci_writeb(host, cmd_res, SDHCI_UHS2_TIMER_CTRL); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_set_timeout); + +void sdhci_uhs2_set_transfer_mode(struct sdhci_host *host, + struct mmc_command *cmd) +{ + u16 mode; + struct mmc_data *data = cmd->data; + u16 arg; + + if (data == NULL) { + /* clear Auto CMD settings for no data CMDs */ + arg = cmd->uhs2_cmd->arg; + if ((((arg & 0xF) << 8) | ((arg >> 8) & 0xFF)) == + UHS2_DEV_CMD_TRANS_ABORT) { + mode = 0; + } else { + mode = sdhci_readw(host, SDHCI_UHS2_TRANS_MODE); + if (cmd->opcode == MMC_STOP_TRANSMISSION || + cmd->opcode == MMC_ERASE) + mode |= SDHCI_UHS2_TRNS_WAIT_EBSY; + else { + /* send status mode */ + if (cmd->opcode == MMC_SEND_STATUS) + mode = 0; + } + } +#ifdef CONFIG_MMC_DEBUG + DBG("UHS2 no data trans mode is 0x%x.\n", mode); +#endif + sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE); + return; + } + + WARN_ON(!host->data); + + mode = SDHCI_UHS2_TRNS_BLK_CNT_EN | SDHCI_UHS2_TRNS_WAIT_EBSY; + if (data->flags & MMC_DATA_WRITE) + mode |= SDHCI_UHS2_TRNS_DATA_TRNS_WRT; + + if (data->blocks == 1 && + data->blksz != 512 && + cmd->opcode != MMC_READ_SINGLE_BLOCK && + cmd->opcode != MMC_WRITE_BLOCK) { + mode &= ~SDHCI_UHS2_TRNS_BLK_CNT_EN; + mode |= SDHCI_UHS2_TRNS_BLK_BYTE_MODE; + } + + if (host->flags & SDHCI_REQ_USE_DMA) + mode |= SDHCI_UHS2_TRNS_DMA; + + if ((host->mmc->flags & MMC_UHS2_2L_HD) && !cmd->uhs2_tmode0_flag) + mode |= SDHCI_UHS2_TRNS_2L_HD; + + sdhci_writew(host, mode, SDHCI_UHS2_TRANS_MODE); + +#ifdef CONFIG_MMC_DEBUG + DBG("UHS2 trans mode is 0x%x.\n", mode); +#endif +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_set_transfer_mode); + +void sdhci_uhs2_send_command(struct sdhci_host *host, struct mmc_command *cmd) +{ + int i, j; + int cmd_reg; + + if (host->mmc->flags & MMC_UHS2_INITIALIZED) { + if (cmd->uhs2_cmd == NULL) { + pr_err("%s: fatal error, no uhs2_cmd!\n", + mmc_hostname(host->mmc)); + BUG(); + return; + } + } + + i = 0; + sdhci_writel(host, + ((u32)cmd->uhs2_cmd->arg << 16) | (u32)cmd->uhs2_cmd->header, + SDHCI_UHS2_CMD_PACKET + i); + i += 4; + + /* + * Per spec, playload (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 = 0; j < cmd->uhs2_cmd->payload_len/sizeof(u32); j++) { + sdhci_writel(host, *(cmd->uhs2_cmd->payload + j), + SDHCI_UHS2_CMD_PACKET + i); + i += 4; + } + + for ( ; i < SDHCI_UHS2_CMD_PACK_MAX_LEN; i += 4) + sdhci_writel(host, 0, SDHCI_UHS2_CMD_PACKET+i); + +#ifdef CONFIG_MMC_DEBUG + DBG("UHS2 CMD packet_len = %d.\n", cmd->uhs2_cmd->packet_len); + for (i = 0; i < cmd->uhs2_cmd->packet_len; i++) + DBG("UHS2 CMD_PACKET[%d] = 0x%x.\n", i, + sdhci_readb(host, SDHCI_UHS2_CMD_PACKET + i)); +#endif + + cmd_reg = cmd->uhs2_cmd->packet_len << + SDHCI_UHS2_COMMAND_PACK_LEN_SHIFT; + if ((cmd->flags & MMC_CMD_MASK) == MMC_CMD_ADTC) + cmd_reg |= SDHCI_UHS2_COMMAND_DATA; + if (cmd->opcode == MMC_STOP_TRANSMISSION) + cmd_reg |= SDHCI_UHS2_COMMAND_CMD12; + + /* UHS2 Native ABORT */ + if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) && + ((((cmd->uhs2_cmd->arg & 0xF) << 8) | + ((cmd->uhs2_cmd->arg >> 8) & 0xFF)) == UHS2_DEV_CMD_TRANS_ABORT)) + cmd_reg |= SDHCI_UHS2_COMMAND_TRNS_ABORT; + + /* UHS2 Native DORMANT */ + if ((cmd->uhs2_cmd->header & UHS2_NATIVE_PACKET) && + ((((cmd->uhs2_cmd->arg & 0xF) << 8) | + ((cmd->uhs2_cmd->arg >> 8) & 0xFF)) == + UHS2_DEV_CMD_GO_DORMANT_STATE)) + cmd_reg |= SDHCI_UHS2_COMMAND_DORMANT; + + DBG("0x%x is set to UHS2 CMD register.\n", cmd_reg); + + sdhci_writew(host, cmd_reg, SDHCI_UHS2_COMMAND); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_send_command); + +void sdhci_uhs2_finish_command(struct sdhci_host *host) +{ + int i; + bool bReadA0 = 0; + + if (host->mmc->flags & MMC_UHS2_INITIALIZED) { + u8 resp; + u8 ecode; + + resp = sdhci_readb(host, SDHCI_UHS2_RESPONSE + 2); + if (resp & UHS2_RES_NACK_MASK) { + ecode = (resp >> UHS2_RES_ECODE_POS) & + UHS2_RES_ECODE_MASK; + pr_err("%s: NACK is got, ECODE=0x%x.\n", + mmc_hostname(host->mmc), ecode); + } + bReadA0 = 1; + } + + if (host->cmd->uhs2_resp && + host->cmd->uhs2_resp_len && + host->cmd->uhs2_resp_len <= 20) { + /* Get whole response of some native CCMD, like + * DEVICE_INIT, ENUMERATE. + */ + for (i = 0; i < host->cmd->uhs2_resp_len; i++) + host->cmd->uhs2_resp[i] = 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 = 4; i < 20; i += 4) { + host->cmd->resp[i/4-1] = (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); + } + } +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_finish_command); + +void sdhci_uhs2_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) +{ + u8 cmd_res, dead_lock; + u16 ctrl_2; + unsigned long flags; + + spin_lock_irqsave(&host->lock, flags); + + /* UHS2 Timeout Control */ + sdhci_calc_timeout_uhs2(host, &cmd_res, &dead_lock); + + /* change to use calculate value */ + cmd_res |= dead_lock << SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT; + + sdhci_uhs2_clear_set_irqs(host, + SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT| + SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT, + 0); + sdhci_writeb(host, cmd_res, SDHCI_UHS2_TIMER_CTRL); + sdhci_uhs2_clear_set_irqs(host, 0, + SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT| + SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT); + + /* UHS2 timing */ + ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (ios->timing == MMC_TIMING_UHS2) + ctrl_2 |= SDHCI_CTRL_UHS_2 | SDHCI_CTRL_UHS2_INTERFACE_EN; + else + ctrl_2 &= ~(SDHCI_CTRL_UHS_2 | SDHCI_CTRL_UHS2_INTERFACE_EN); + sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); + + if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) + sdhci_enable_preset_value(host, true); + + /* Set VDD2 */ + ios->vdd = fls(host->mmc->ocr_avail) - 1; + ios->vdd2 = fls(host->mmc->ocr_avail_uhs2) - 1; + + sdhci_set_power(host, ios->power_mode, ios->vdd, ios->vdd2); + udelay(100); + + host->timing = ios->timing; + sdhci_set_clock(host, host->clock); + + spin_unlock_irqrestore(&host->lock, flags); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_do_set_ios); + +static int sdhci_uhs2_interface_detect(struct sdhci_host *host) +{ + int timeout = 100; + + udelay(200); /* wait for 200us before check */ + + while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & + SDHCI_UHS2_IF_DETECT)) { + if (timeout == 0) { + pr_warn("%s: not detect UHS2 interface in 200us.\n", + mmc_hostname(host->mmc)); + sdhci_dumpregs(host); + return -EIO; + } + timeout--; + mdelay(1); + } + + /* Enable UHS2 error interrupts */ + sdhci_uhs2_clear_set_irqs(host, SDHCI_INT_ALL_MASK, + SDHCI_UHS2_ERR_INT_STATUS_MASK); + + timeout = 150; + while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & + SDHCI_UHS2_LANE_SYNC)) { + if (timeout == 0) { + pr_warn("%s: UHS2 Lane sync fail in 150ms.\n", + mmc_hostname(host->mmc)); + sdhci_dumpregs(host); + return -EIO; + } + timeout--; + mdelay(1); + } + + DBG("%s: UHS2 Lane synchronized in UHS2 mode, PHY is initializaed.\n", + mmc_hostname(host->mmc)); + return 0; +} + +static int sdhci_uhs2_init(struct sdhci_host *host) +{ + u16 caps_ptr = 0; + u32 caps_gen = 0; + u32 caps_phy = 0; + u32 caps_tran[2] = {0, 0}; + struct mmc_host *mmc = host->mmc; + + /* + * TODO: may add corresponding members in sdhci_host to + * keep these caps. + */ + caps_ptr = sdhci_readw(host, SDHCI_UHS2_HOST_CAPS_PTR); + if (caps_ptr < 0x100 || caps_ptr > 0x1FF) { + pr_err("%s: SDHCI_UHS2_HOST_CAPS_PTR(%d) is wrong.\n", + mmc_hostname(mmc), caps_ptr); + return -ENODEV; + } + caps_gen = sdhci_readl(host, + caps_ptr + SDHCI_UHS2_HOST_CAPS_GEN_OFFSET); + caps_phy = sdhci_readl(host, + caps_ptr + SDHCI_UHS2_HOST_CAPS_PHY_OFFSET); + caps_tran[0] = sdhci_readl(host, + caps_ptr + SDHCI_UHS2_HOST_CAPS_TRAN_OFFSET); + caps_tran[1] = sdhci_readl(host, + caps_ptr + SDHCI_UHS2_HOST_CAPS_TRAN_1_OFFSET); + + /* Geneneral Caps */ + mmc->uhs2_caps.dap = caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_DAP_MASK; + mmc->uhs2_caps.gap = (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_GAP_MASK) >> + SDHCI_UHS2_HOST_CAPS_GEN_GAP_SHIFT; + mmc->uhs2_caps.n_lanes = (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_LANE_MASK) + >> SDHCI_UHS2_HOST_CAPS_GEN_LANE_SHIFT; + mmc->uhs2_caps.addr64 = + (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_ADDR_64) ? 1 : 0; + mmc->uhs2_caps.card_type = + (caps_gen & SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_MASK) >> + SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_SHIFT; + + /* PHY Caps */ + mmc->uhs2_caps.phy_rev = caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_REV_MASK; + mmc->uhs2_caps.speed_range = + (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_RANGE_MASK) + >> SDHCI_UHS2_HOST_CAPS_PHY_RANGE_SHIFT; + mmc->uhs2_caps.n_lss_sync = + (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_MASK) + >> SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_SHIFT; + mmc->uhs2_caps.n_lss_dir = + (caps_phy & SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_MASK) + >> SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_SHIFT; + if (mmc->uhs2_caps.n_lss_sync == 0) + mmc->uhs2_caps.n_lss_sync = 16 << 2; + else + mmc->uhs2_caps.n_lss_sync <<= 2; + if (mmc->uhs2_caps.n_lss_dir == 0) + mmc->uhs2_caps.n_lss_dir = 16 << 3; + else + mmc->uhs2_caps.n_lss_dir <<= 3; + + /* LINK/TRAN Caps */ + mmc->uhs2_caps.link_rev = + caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_LINK_REV_MASK; + mmc->uhs2_caps.n_fcu = + (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_MASK) + >> SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_SHIFT; + if (mmc->uhs2_caps.n_fcu == 0) + mmc->uhs2_caps.n_fcu = 256; + mmc->uhs2_caps.host_type = + (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_MASK) + >> SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_SHIFT; + mmc->uhs2_caps.maxblk_len = + (caps_tran[0] & SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_MASK) + >> SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_SHIFT; + mmc->uhs2_caps.n_data_gap = + caps_tran[1] & SDHCI_UHS2_HOST_CAPS_TRAN_1_N_DATA_GAP_MASK; + + return 0; +} + +int sdhci_uhs2_do_detect_init(struct sdhci_host *host) +{ + unsigned long flags; + int ret = -EIO; + + DBG("%s: begin UHS2 init.\n", __func__); + spin_lock_irqsave(&host->lock, flags); + + if (sdhci_uhs2_interface_detect(host)) { + pr_warn("%s: cannot detect UHS2 interface.\n", + mmc_hostname(host->mmc)); + goto out; + } + + if (sdhci_uhs2_init(host)) { + pr_warn("%s: UHS2 init fail.\n", + mmc_hostname(host->mmc)); + goto out; + } + + /* Init complete, do soft reset and enable UHS2 error irqs. */ + sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_SD); + sdhci_uhs2_clear_set_irqs(host, SDHCI_INT_ALL_MASK, + SDHCI_UHS2_ERR_INT_STATUS_MASK); + /* + * !!! SDHCI_INT_ENABLE and SDHCI_SIGNAL_ENABLE was cleared + * by SDHCI_UHS2_SW_RESET_SD + */ + sdhci_writel(host, host->ier, SDHCI_INT_ENABLE); + sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE); + + ret = 0; +out: + spin_unlock_irqrestore(&host->lock, flags); + return ret; +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_do_detect_init); + +static void sdhci_uhs2_set_config(struct sdhci_host *host) +{ + u32 value; + u16 sdhci_uhs2_set_ptr = sdhci_readw(host, SDHCI_UHS2_SET_PTR); + u16 sdhci_uhs2_gen_set_reg = (sdhci_uhs2_set_ptr + 0); + u16 sdhci_uhs2_phy_set_reg = (sdhci_uhs2_set_ptr + 4); + u16 sdhci_uhs2_tran_set_reg = (sdhci_uhs2_set_ptr + 8); + u16 sdhci_uhs2_tran_set_1_reg = (sdhci_uhs2_set_ptr + 12); + + /* Set Gen Settings */ + sdhci_writel(host, host->mmc->uhs2_caps.n_lanes_set << + SDHCI_UHS2_GEN_SET_N_LANES_POS, sdhci_uhs2_gen_set_reg); + + /* Set PHY Settings */ + value = (host->mmc->uhs2_caps.n_lss_dir_set << + SDHCI_UHS2_PHY_SET_N_LSS_DIR_POS) | + (host->mmc->uhs2_caps.n_lss_sync_set << + SDHCI_UHS2_PHY_SET_N_LSS_SYN_POS); + if (host->mmc->flags & MMC_UHS2_SPEED_B) + value |= 1 << SDHCI_UHS2_PHY_SET_SPEED_POS; + sdhci_writel(host, value, sdhci_uhs2_phy_set_reg); + + /* Set LINK-TRAN Settings */ + value = (host->mmc->uhs2_caps.max_retry_set << + SDHCI_UHS2_TRAN_SET_RETRY_CNT_POS) | + (host->mmc->uhs2_caps.n_fcu_set << + SDHCI_UHS2_TRAN_SET_N_FCU_POS); + sdhci_writel(host, value, sdhci_uhs2_tran_set_reg); + sdhci_writel(host, host->mmc->uhs2_caps.n_data_gap_set, + sdhci_uhs2_tran_set_1_reg); +} + +static int sdhci_uhs2_check_dormant(struct sdhci_host *host) +{ + int timeout = 100; + + while (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & + SDHCI_UHS2_IN_DORMANT_STATE)) { + if (timeout == 0) { + pr_warn("%s: UHS2 IN_DORMANT fail in 100ms.\n", + mmc_hostname(host->mmc)); + sdhci_dumpregs(host); + return -EIO; + } + timeout--; + mdelay(1); + } + return 0; +} + +int sdhci_uhs2_do_set_reg(struct sdhci_host *host, enum uhs2_act act) +{ + unsigned long flags; + int err = 0; + u16 sdhci_uhs2_set_ptr = sdhci_readw(host, SDHCI_UHS2_SET_PTR); + u16 sdhci_uhs2_phy_set_reg = (sdhci_uhs2_set_ptr + 4); + + DBG("Begin sdhci_uhs2_set_reg, act %d.\n", act); + spin_lock_irqsave(&host->lock, flags); + + switch (act) { + case SET_CONFIG: + sdhci_uhs2_set_config(host); + break; + case ENABLE_INT: + sdhci_clear_set_irqs(host, 0, SDHCI_INT_CARD_INT); + break; + case DISABLE_INT: + sdhci_clear_set_irqs(host, SDHCI_INT_CARD_INT, 0); + break; + case SET_SPEED_B: + sdhci_writeb(host, 1 << SDHCI_UHS2_PHY_SET_SPEED_POS, + sdhci_uhs2_phy_set_reg); + break; + case CHECK_DORMANT: + err = sdhci_uhs2_check_dormant(host); + break; + default: + pr_err("%s: input action %d is wrong!\n", + mmc_hostname(host->mmc), act); + err = -EIO; + break; + } + + spin_unlock_irqrestore(&host->lock, flags); + return err; +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_do_set_reg); + +void sdhci_uhs2_irq(struct sdhci_host *host) +{ + u32 uhs2mask; + struct mmc_command *cmd = host->cmd; + + uhs2mask = sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS); + DBG("*** %s got UHS2 interrupt: 0x%08x\n", + mmc_hostname(host->mmc), uhs2mask); + + sdhci_writel(host, uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_MASK, + SDHCI_UHS2_ERR_INT_STATUS); + + if (!(uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_MASK)) + return; + + if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_CMD_MASK) { + if (!host->cmd) { + pr_err("%s: Got cmd interrupt 0x%08x but no cmd.\n", + mmc_hostname(host->mmc), + (unsigned int)uhs2mask); + sdhci_dumpregs(host); + return; + } + host->cmd->error = -EILSEQ; + if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT) + host->cmd->error = -ETIMEDOUT; + } + + if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_DATA_MASK) { + if (!host->data) { + pr_err("%s: Got data interrupt 0x%08x but no data.\n", + mmc_hostname(host->mmc), + (unsigned int)uhs2mask); + sdhci_dumpregs(host); + return; + } + + if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT) { + pr_err("%s: Got deadlock timeout interrupt 0x%08x\n", + mmc_hostname(host->mmc), + (unsigned int)uhs2mask); + host->data->error = -ETIMEDOUT; + } else if (uhs2mask & SDHCI_UHS2_ERR_INT_STATUS_ADMA) { + pr_err("%s: ADMA error = 0x %x\n", + mmc_hostname(host->mmc), + sdhci_readb(host, SDHCI_ADMA_ERROR)); + host->data->error = -EIO; + } else + host->data->error = -EILSEQ; + } + + if (host->data && host->data->error) + sdhci_finish_data(host); + else + sdhci_finish_mrq(host, cmd->mrq); +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_irq); + +int sdhci_uhs2_add_host(struct sdhci_host *host, u32 caps1) +{ + struct mmc_host *mmc; + u32 max_current_caps2; + + if (host->version < SDHCI_SPEC_400) + return 0; + + mmc = host->mmc; + + /* Support UHS2 */ + if (caps1 & SDHCI_SUPPORT_UHS2) { + mmc->caps |= MMC_CAP_UHS2; + mmc->flags |= MMC_UHS2_SUPPORT; + } + + max_current_caps2 = sdhci_readl(host, SDHCI_MAX_CURRENT_1); + + if ((caps1 & SDHCI_SUPPORT_VDD2_180) && + !max_current_caps2 && + !IS_ERR(mmc->supply.vmmc2)) { + /* UHS2 - VDD2 */ + int curr = regulator_get_current_limit(mmc->supply.vmmc2); + + if (curr > 0) { + /* convert to SDHCI_MAX_CURRENT format */ + curr = curr/1000; /* convert to mA */ + curr = curr/SDHCI_MAX_CURRENT_MULTIPLIER; + curr = min_t(u32, curr, + SDHCI_MAX_CURRENT_LIMIT); + max_current_caps2 = curr; + } + } + + if (caps1 & SDHCI_SUPPORT_VDD2_180) { + mmc->ocr_avail_uhs2 |= MMC_VDD2_165_195; + /* + * UHS2 doesn't require this. Only UHS-I bus needs to set + * max current. + */ + mmc->max_current_180_vdd2 = (max_current_caps2 & + SDHCI_MAX_CURRENT_VDD2_180_MASK) * + SDHCI_MAX_CURRENT_MULTIPLIER; + } else { + mmc->caps &= ~MMC_CAP_UHS2; + mmc->flags &= ~MMC_UHS2_SUPPORT; + } + + return 0; +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_add_host); + +void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead) +{ + if (!(host->mmc) || !(host->mmc->flags & MMC_UHS2_SUPPORT)) + return; + + if (!dead) + sdhci_uhs2_reset(host, SDHCI_UHS2_SW_RESET_FULL); + + sdhci_writel(host, 0, SDHCI_UHS2_ERR_INT_STATUS_EN); + sdhci_writel(host, 0, SDHCI_UHS2_ERR_INT_SIG_EN); + host->mmc->flags &= ~MMC_UHS2_SUPPORT; + host->mmc->flags &= ~MMC_UHS2_INITIALIZED; +} +EXPORT_SYMBOL_GPL(sdhci_uhs2_remove_host); diff --git a/drivers/mmc/host/sdhci-uhs2.h b/drivers/mmc/host/sdhci-uhs2.h new file mode 100644 index 000000000000..1a17c81a3533 --- /dev/null +++ b/drivers/mmc/host/sdhci-uhs2.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * linux/drivers/mmc/host/sdhci-uhs2.h - Secure Digital Host Controller + * Interface driver + * + * Header file for Host Controller UHS2 related registers and I/O accessors. + * + * Copyright (C) 2014 Intel Corp, All Rights Reserved. + */ +#ifndef __SDHCI_UHS2_H +#define __SDHCI_UHS2_H + +#include +#include +#include + +extern void sdhci_uhs2_reset(struct sdhci_host *host, u16 mask); +extern void sdhci_uhs2_set_transfer_mode(struct sdhci_host *host, + struct mmc_command *cmd); +extern void sdhci_uhs2_send_command(struct sdhci_host *host, + struct mmc_command *cmd); +extern void sdhci_uhs2_finish_command(struct sdhci_host *host); +extern void sdhci_uhs2_do_set_ios(struct sdhci_host *host, + struct mmc_ios *ios); +extern int sdhci_uhs2_do_detect_init(struct sdhci_host *host); +extern int sdhci_uhs2_do_set_reg(struct sdhci_host *host, enum uhs2_act act); +extern void sdhci_uhs2_irq(struct sdhci_host *host); +extern int sdhci_uhs2_add_host(struct sdhci_host *host, u32 caps1); +extern void sdhci_uhs2_remove_host(struct sdhci_host *host, int dead); +extern void sdhci_uhs2_clear_set_irqs(struct sdhci_host *host, u32 clear, + u32 set); +extern void sdhci_uhs2_set_timeout(struct sdhci_host *host); + +#endif /* __SDHCI_UHS2_H */ diff --git a/drivers/mmc/host/sdhci-xenon.c b/drivers/mmc/host/sdhci-xenon.c index 1dea1ba66f7b..328860cf2bc3 100644 --- a/drivers/mmc/host/sdhci-xenon.c +++ b/drivers/mmc/host/sdhci-xenon.c @@ -214,12 +214,12 @@ static void xenon_set_uhs_signaling(struct sdhci_host *host, } static void xenon_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { struct mmc_host *mmc = host->mmc; u8 pwr = host->pwr; - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, -1); if (host->pwr == pwr) return; diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0ed3e0eaef5f..48176e9556b7 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -42,8 +42,28 @@ #define SDHCI_TRNS_READ 0x10 #define SDHCI_TRNS_MULTI 0x20 +/* + * Defined in Host Version 4.10. + * 1 - R5 (SDIO) + * 0 - R1 (Memory) + */ +#define SDHCI_TRNS_RES_TYPE 0x40 +#define SDHCI_TRNS_RES_ERR_CHECK 0x80 +#define SDHCI_TRNS_RES_INT_DIS 0x0100 + + #define SDHCI_COMMAND 0x0E #define SDHCI_CMD_RESP_MASK 0x03 + +/* + * Host Version 4.10 adds this bit to distinguish a main command or + * sub command. + * CMD53(SDIO) - main command + * CMD52(SDIO) - sub command which doesn't have data block or doesn't + * indicate busy. + */ +#define SDHCI_CMD_SUB_CMD 0x04 + #define SDHCI_CMD_CRC 0x08 #define SDHCI_CMD_INDEX 0x10 #define SDHCI_CMD_DATA 0x20 @@ -59,11 +79,19 @@ #define SDHCI_RESPONSE 0x10 +#define SDHCI_RESPONSE_CM_TRAN_ABORT_OFFSET 0x10 +#define SDHCI_RESPONSE_CM_TRAN_ABORT_SIZE 4 +#define SDHCI_RESPONSE_SD_TRAN_ABORT_OFFSET 0x18 +#define SDHCI_RESPONSE_SD_TRAN_ABORT_SIZE 8 + #define SDHCI_BUFFER 0x20 #define SDHCI_PRESENT_STATE 0x24 #define SDHCI_CMD_INHIBIT 0x00000001 #define SDHCI_DATA_INHIBIT 0x00000002 + +#define SDHCI_DATA_HIGH_LVL_MASK 0x000000F0 + #define SDHCI_DOING_WRITE 0x00000100 #define SDHCI_DOING_READ 0x00000200 #define SDHCI_SPACE_AVAILABLE 0x00000400 @@ -79,6 +107,13 @@ #define SDHCI_DATA_0_LVL_MASK 0x00100000 #define SDHCI_CMD_LVL 0x01000000 +#define SDHCI_HOST_REGULATOR_STABLE 0x02000000 +#define SDHCI_CMD_NOT_ISSUE_ERR 0x08000000 +#define SDHCI_SUB_CMD_STATUS 0x10000000 +#define SDHCI_UHS2_IN_DORMANT_STATE 0x20000000 +#define SDHCI_UHS2_LANE_SYNC 0x40000000 +#define SDHCI_UHS2_IF_DETECT 0x80000000 + #define SDHCI_HOST_CONTROL 0x28 #define SDHCI_CTRL_LED 0x01 #define SDHCI_CTRL_4BITBUS 0x02 @@ -99,6 +134,11 @@ #define SDHCI_POWER_300 0x0C #define SDHCI_POWER_330 0x0E +/* VDD2 - UHS2 */ +#define SDHCI_VDD2_POWER_ON 0x10 +#define SDHCI_VDD2_POWER_180 0xA0 +#define SDHCI_VDD2_POWER_120 0x80 + #define SDHCI_BLOCK_GAP_CONTROL 0x2A #define SDHCI_WAKE_UP_CONTROL 0x2B @@ -109,7 +149,7 @@ #define SDHCI_CLOCK_CONTROL 0x2C #define SDHCI_DIVIDER_SHIFT 8 #define SDHCI_DIVIDER_HI_SHIFT 6 -#define SDHCI_DIV_MASK 0xFF +#define SDHCI_DIV_MASK 0xFF #define SDHCI_DIV_MASK_LEN 8 #define SDHCI_DIV_HI_MASK 0x300 #define SDHCI_PROG_CLOCK_MODE 0x0020 @@ -138,6 +178,10 @@ #define SDHCI_INT_CARD_REMOVE 0x00000080 #define SDHCI_INT_CARD_INT 0x00000100 #define SDHCI_INT_RETUNE 0x00001000 + +/* Host Version 4.10 */ +#define SDHCI_INT_FX_EVENT 0x00002000 + #define SDHCI_INT_CQE 0x00004000 #define SDHCI_INT_ERROR 0x00008000 #define SDHCI_INT_TIMEOUT 0x00010000 @@ -151,6 +195,9 @@ #define SDHCI_INT_AUTO_CMD_ERR 0x01000000 #define SDHCI_INT_ADMA_ERROR 0x02000000 +/* Host Version 4.0 */ +#define SDHCI_INT_RESPONSE_ERROR 0x08000000 + #define SDHCI_INT_NORMAL_MASK 0x00007FFF #define SDHCI_INT_ERROR_MASK 0xFFFF8000 @@ -177,6 +224,9 @@ #define SDHCI_AUTO_CMD_END_BIT 0x00000008 #define SDHCI_AUTO_CMD_INDEX 0x00000010 +/* Host Version 4.10 */ +#define SDHCI_ACMD_RESPONSE_ERROR 0x0020 + #define SDHCI_HOST_CONTROL2 0x3E #define SDHCI_CTRL_UHS_MASK 0x0007 #define SDHCI_CTRL_UHS_SDR12 0x0000 @@ -185,6 +235,7 @@ #define SDHCI_CTRL_UHS_SDR104 0x0003 #define SDHCI_CTRL_UHS_DDR50 0x0004 #define SDHCI_CTRL_HS400 0x0005 /* Non-standard */ +#define SDHCI_CTRL_UHS_2 0x0007 /* UHS-2 */ #define SDHCI_CTRL_VDD_180 0x0008 #define SDHCI_CTRL_DRV_TYPE_MASK 0x0030 #define SDHCI_CTRL_DRV_TYPE_B 0x0000 @@ -193,9 +244,12 @@ #define SDHCI_CTRL_DRV_TYPE_D 0x0030 #define SDHCI_CTRL_EXEC_TUNING 0x0040 #define SDHCI_CTRL_TUNED_CLK 0x0080 +#define SDHCI_CTRL_UHS2_INTERFACE_EN 0x0100 /* UHS-2 */ +#define SDHCI_CTRL_ADMA2_LEN_MODE 0x0400 #define SDHCI_CMD23_ENABLE 0x0800 #define SDHCI_CTRL_V4_MODE 0x1000 #define SDHCI_CTRL_64BIT_ADDR 0x2000 +#define SDHCI_CTRL_ASYNC_INT_EN 0x4000 #define SDHCI_CTRL_PRESET_VAL_ENABLE 0x8000 #define SDHCI_CAPABILITIES 0x40 @@ -218,10 +272,12 @@ #define SDHCI_CAN_VDD_180 0x04000000 #define SDHCI_CAN_64BIT_V4 0x08000000 #define SDHCI_CAN_64BIT 0x10000000 +#define SDHCI_CAN_ASYNC_INT 0x20000000 #define SDHCI_SUPPORT_SDR50 0x00000001 #define SDHCI_SUPPORT_SDR104 0x00000002 #define SDHCI_SUPPORT_DDR50 0x00000004 +#define SDHCI_SUPPORT_UHS2 0x00000008 /* UHS-2 support */ #define SDHCI_DRIVER_TYPE_A 0x00000010 #define SDHCI_DRIVER_TYPE_C 0x00000020 #define SDHCI_DRIVER_TYPE_D 0x00000040 @@ -233,11 +289,14 @@ #define SDHCI_CLOCK_MUL_MASK 0x00FF0000 #define SDHCI_CLOCK_MUL_SHIFT 16 #define SDHCI_CAN_DO_ADMA3 0x08000000 +#define SDHCI_SUPPORT_VDD2_180 0x10000000 /* UHS-2 1.8V VDD2 */ +#define SDHCI_RSVD_FOR_VDD2 0x20000000 /* Rsvd for future VDD2 */ #define SDHCI_SUPPORT_HS400 0x80000000 /* Non-standard */ #define SDHCI_CAPABILITIES_1 0x44 #define SDHCI_MAX_CURRENT 0x48 +#define SDHCI_MAX_CURRENT_1 0x4C #define SDHCI_MAX_CURRENT_LIMIT 0xFF #define SDHCI_MAX_CURRENT_330_MASK 0x0000FF #define SDHCI_MAX_CURRENT_330_SHIFT 0 @@ -245,12 +304,18 @@ #define SDHCI_MAX_CURRENT_300_SHIFT 8 #define SDHCI_MAX_CURRENT_180_MASK 0xFF0000 #define SDHCI_MAX_CURRENT_180_SHIFT 16 -#define SDHCI_MAX_CURRENT_MULTIPLIER 4 +#define SDHCI_MAX_CURRENT_VDD2_180_MASK 0x0000000FF /* UHS2 */ +#define SDHCI_MAX_CURRENT_MULTIPLIER 4 /* 4C-4F reserved for more max current */ #define SDHCI_SET_ACMD12_ERROR 0x50 +/* Host Version 4.10 */ +#define SDHCI_SET_ACMD_RESPONSE_ERROR 0x20 #define SDHCI_SET_INT_ERROR 0x52 +/* Host Version 4.10 */ +#define SDHCI_SET_INT_TUNING_ERROR 0x0400 +#define SDHCI_SET_INT_RESPONSE_ERROR 0x0800 #define SDHCI_ADMA_ERROR 0x54 @@ -267,6 +332,11 @@ #define SDHCI_PRESET_FOR_SDR104 0x6C #define SDHCI_PRESET_FOR_DDR50 0x6E #define SDHCI_PRESET_FOR_HS400 0x74 /* Non-standard */ + +/* TODO: 0x74 is used for UHS2 in 4.10. How about HS400? */ +/* UHS2 */ +#define SDHCI_PRESET_FOR_UHS2 0x74 + #define SDHCI_PRESET_DRV_MASK 0xC000 #define SDHCI_PRESET_DRV_SHIFT 14 #define SDHCI_PRESET_CLKGEN_SEL_MASK 0x400 @@ -274,6 +344,195 @@ #define SDHCI_PRESET_SDCLK_FREQ_MASK 0x3FF #define SDHCI_PRESET_SDCLK_FREQ_SHIFT 0 +#define SDHCI_ADMA3_ADDRESS 0x78 + +/* UHS-II */ +#define SDHCI_UHS2_BLOCK_SIZE 0x80 +#define SDHCI_UHS2_MAKE_BLKSZ(dma, blksz) \ + (((dma & 0x7) << 12) | (blksz & 0xFFF)) + +#define SDHCI_UHS2_BLOCK_COUNT 0x84 + +#define SDHCI_UHS2_CMD_PACKET 0x88 +#define SDHCI_UHS2_CMD_PACK_MAX_LEN 20 + +#define SDHCI_UHS2_TRANS_MODE 0x9C +#define SDHCI_UHS2_TRNS_DMA 0x0001 +#define SDHCI_UHS2_TRNS_BLK_CNT_EN 0x0002 +#define SDHCI_UHS2_TRNS_DATA_TRNS_WRT 0x0010 +#define SDHCI_UHS2_TRNS_BLK_BYTE_MODE 0x0020 +#define SDHCI_UHS2_TRNS_RES_R5 0x0040 +#define SDHCI_UHS2_TRNS_RES_ERR_CHECK_EN 0x0080 +#define SDHCI_UHS2_TRNS_RES_INT_DIS 0x0100 +#define SDHCI_UHS2_TRNS_WAIT_EBSY 0x4000 +#define SDHCI_UHS2_TRNS_2L_HD 0x8000 + +#define SDHCI_UHS2_COMMAND 0x9E +#define SDHCI_UHS2_COMMAND_SUB_CMD 0x0004 +#define SDHCI_UHS2_COMMAND_DATA 0x0020 +#define SDHCI_UHS2_COMMAND_TRNS_ABORT 0x0040 +#define SDHCI_UHS2_COMMAND_CMD12 0x0080 +#define SDHCI_UHS2_COMMAND_DORMANT 0x00C0 +#define SDHCI_UHS2_COMMAND_PACK_LEN_MASK 0x1F00 +#define SDHCI_UHS2_COMMAND_PACK_LEN_SHIFT 8 + +#define SDHCI_UHS2_RESPONSE 0xA0 +#define SDHCI_UHS2_RESPONSE_MAX_LEN 20 + +#define SDHCI_UHS2_MSG_SELECT 0xB4 +#define SDHCI_UHS2_MSG_SELECT_CURR 0x0 +#define SDHCI_UHS2_MSG_SELECT_ONE 0x1 +#define SDHCI_UHS2_MSG_SELECT_TWO 0x2 +#define SDHCI_UHS2_MSG_SELECT_THREE 0x3 + +#define SDHCI_UHS2_MSG 0xB8 + +#define SDHCI_UHS2_DEV_INT_STATUS 0xBC + +#define SDHCI_UHS2_DEV_SELECT 0xBE +#define SDHCI_UHS2_DEV_SELECT_DEV_SEL_MASK 0x0F +#define SDHCI_UHS2_DEV_SELECT_INT_MSG_EN 0x80 + +#define SDHCI_UHS2_DEV_INT_CODE 0xBF + +#define SDHCI_UHS2_SW_RESET 0xC0 +#define SDHCI_UHS2_SW_RESET_FULL 0x0001 +#define SDHCI_UHS2_SW_RESET_SD 0x0002 + +#define SDHCI_UHS2_TIMER_CTRL 0xC2 +#define SDHCI_UHS2_TIMER_CTRL_DEADLOCK_SHIFT 4 + +#define SDHCI_UHS2_ERR_INT_STATUS 0xC4 +#define SDHCI_UHS2_ERR_INT_STATUS_EN 0xC8 +#define SDHCI_UHS2_ERR_INT_SIG_EN 0xCC +#define SDHCI_UHS2_ERR_INT_STATUS_HEADER 0x00000001 +#define SDHCI_UHS2_ERR_INT_STATUS_RES 0x00000002 +#define SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP 0x00000004 +#define SDHCI_UHS2_ERR_INT_STATUS_CRC 0x00000008 +#define SDHCI_UHS2_ERR_INT_STATUS_FRAME 0x00000010 +#define SDHCI_UHS2_ERR_INT_STATUS_TID 0x00000020 +#define SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER 0x00000080 +#define SDHCI_UHS2_ERR_INT_STATUS_EBUSY 0x00000100 +#define SDHCI_UHS2_ERR_INT_STATUS_ADMA 0x00008000 +#define SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT 0x00010000 +#define SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT 0x00020000 +#define SDHCI_UHS2_ERR_INT_STATUS_VENDOR 0x08000000 +#define SDHCI_UHS2_ERR_INT_STATUS_MASK \ + (SDHCI_UHS2_ERR_INT_STATUS_HEADER | \ + SDHCI_UHS2_ERR_INT_STATUS_RES | \ + SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP | \ + SDHCI_UHS2_ERR_INT_STATUS_CRC | \ + SDHCI_UHS2_ERR_INT_STATUS_FRAME | \ + SDHCI_UHS2_ERR_INT_STATUS_TID | \ + SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER | \ + SDHCI_UHS2_ERR_INT_STATUS_EBUSY | \ + SDHCI_UHS2_ERR_INT_STATUS_ADMA | \ + SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT | \ + SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT) +#define SDHCI_UHS2_ERR_INT_STATUS_CMD_MASK \ + (SDHCI_UHS2_ERR_INT_STATUS_HEADER | \ + SDHCI_UHS2_ERR_INT_STATUS_RES | \ + SDHCI_UHS2_ERR_INT_STATUS_FRAME | \ + SDHCI_UHS2_ERR_INT_STATUS_TID | \ + SDHCI_UHS2_ERR_INT_STATUS_RES_TIMEOUT) +/* CRC Error occurs during a packet receiving */ +#define SDHCI_UHS2_ERR_INT_STATUS_DATA_MASK \ + (SDHCI_UHS2_ERR_INT_STATUS_RETRY_EXP | \ + SDHCI_UHS2_ERR_INT_STATUS_CRC | \ + SDHCI_UHS2_ERR_INT_STATUS_UNRECOVER | \ + SDHCI_UHS2_ERR_INT_STATUS_EBUSY | \ + SDHCI_UHS2_ERR_INT_STATUS_ADMA | \ + SDHCI_UHS2_ERR_INT_STATUS_DEADLOCK_TIMEOUT) + +#define SDHCI_UHS2_SET_PTR 0xE0 +#define SDHCI_UHS2_GEN_SET_POWER_LOW 0x0001 +#define SDHCI_UHS2_GEN_SET_N_LANES_POS 8 +#define SDHCI_UHS2_GEN_SET_2L_FD_HD 0x0 +#define SDHCI_UHS2_GEN_SET_2D1U_FD 0x2 +#define SDHCI_UHS2_GEN_SET_1D2U_FD 0x3 +#define SDHCI_UHS2_GEN_SET_2D2U_FD 0x4 + +#define SDHCI_UHS2_PHY_SET_SPEED_POS 6 +#define SDHCI_UHS2_PHY_SET_HIBER_EN 0x00008000 +#define SDHCI_UHS2_PHY_SET_N_LSS_SYN_MASK 0x000F0000 +#define SDHCI_UHS2_PHY_SET_N_LSS_SYN_POS 16 +#define SDHCI_UHS2_PHY_SET_N_LSS_DIR_MASK 0x00F00000 +#define SDHCI_UHS2_PHY_SET_N_LSS_DIR_POS 20 + +#define SDHCI_UHS2_TRAN_SET_N_FCU_MASK 0x0000FF00 +#define SDHCI_UHS2_TRAN_SET_N_FCU_POS 8 +#define SDHCI_UHS2_TRAN_SET_RETRY_CNT_MASK 0x00030000 +#define SDHCI_UHS2_TRAN_SET_RETRY_CNT_POS 16 + +#define SDHCI_UHS2_TRAN_SET_1_N_DAT_GAP_MASK 0x000000FF + +#define SDHCI_UHS2_HOST_CAPS_PTR 0xE2 +#define SDHCI_UHS2_HOST_CAPS_GEN_OFFSET 0 +#define SDHCI_UHS2_HOST_CAPS_GEN_DAP_MASK 0x0000000F +#define SDHCI_UHS2_HOST_CAPS_GEN_GAP_MASK 0x000000F0 +#define SDHCI_UHS2_HOST_CAPS_GEN_GAP(gap) (gap * 360) +#define SDHCI_UHS2_HOST_CAPS_GEN_GAP_SHIFT 4 +#define SDHCI_UHS2_HOST_CAPS_GEN_LANE_MASK 0x00003F00 +#define SDHCI_UHS2_HOST_CAPS_GEN_LANE_SHIFT 8 +#define SDHCI_UHS2_HOST_CAPS_GEN_2L_HD_FD 1 +#define SDHCI_UHS2_HOST_CAPS_GEN_2D1U_FD 2 +#define SDHCI_UHS2_HOST_CAPS_GEN_1D2U_FD 4 +#define SDHCI_UHS2_HOST_CAPS_GEN_2D2U_FD 8 +#define SDHCI_UHS2_HOST_CAPS_GEN_ADDR_64 0x00004000 +#define SDHCI_UHS2_HOST_CAPS_GEN_BOOT 0x00008000 +#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_MASK 0x00030000 +#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_SHIFT 16 +#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_RMV 0 +#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_EMB 1 +#define SDHCI_UHS2_HOST_CAPS_GEN_DEV_TYPE_EMB_RMV 2 +#define SDHCI_UHS2_HOST_CAPS_GEN_NUM_DEV_MASK 0x003C0000 +#define SDHCI_UHS2_HOST_CAPS_GEN_NUM_DEV_SHIFT 18 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_MASK 0x00C00000 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_SHIFT 22 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_P2P 0 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_RING 1 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_HUB 2 +#define SDHCI_UHS2_HOST_CAPS_GEN_BUS_TOPO_HUB_RING 3 + +#define SDHCI_UHS2_HOST_CAPS_PHY_OFFSET 4 +#define SDHCI_UHS2_HOST_CAPS_PHY_REV_MASK 0x0000003F +#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_MASK 0x000000C0 +#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_SHIFT 6 +#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_A 0 +#define SDHCI_UHS2_HOST_CAPS_PHY_RANGE_B 1 +#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_MASK 0x000F0000 +#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_SYN_SHIFT 16 +#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_MASK 0x00F00000 +#define SDHCI_UHS2_HOST_CAPS_PHY_N_LSS_DIR_SHIFT 20 +#define SDHCI_UHS2_HOST_CAPS_TRAN_OFFSET 8 +#define SDHCI_UHS2_HOST_CAPS_TRAN_LINK_REV_MASK 0x0000003F +#define SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_MASK 0x0000FF00 +#define SDHCI_UHS2_HOST_CAPS_TRAN_N_FCU_SHIFT 8 +#define SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_MASK 0x00070000 +#define SDHCI_UHS2_HOST_CAPS_TRAN_HOST_TYPE_SHIFT 16 +#define SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_MASK 0xFFF00000 +#define SDHCI_UHS2_HOST_CAPS_TRAN_BLK_LEN_SHIFT 20 + +#define SDHCI_UHS2_HOST_CAPS_TRAN_1_OFFSET 12 +#define SDHCI_UHS2_HOST_CAPS_TRAN_1_N_DATA_GAP_MASK 0x000000FF + +#define SDHCI_UHS2_TEST_PTR 0xE4 +#define SDHCI_UHS2_TEST_ERR_HEADER 0x00000001 +#define SDHCI_UHS2_TEST_ERR_RES 0x00000002 +#define SDHCI_UHS2_TEST_ERR_RETRY_EXP 0x00000004 +#define SDHCI_UHS2_TEST_ERR_CRC 0x00000008 +#define SDHCI_UHS2_TEST_ERR_FRAME 0x00000010 +#define SDHCI_UHS2_TEST_ERR_TID 0x00000020 +#define SDHCI_UHS2_TEST_ERR_UNRECOVER 0x00000080 +#define SDHCI_UHS2_TEST_ERR_EBUSY 0x00000100 +#define SDHCI_UHS2_TEST_ERR_ADMA 0x00008000 +#define SDHCI_UHS2_TEST_ERR_RES_TIMEOUT 0x00010000 +#define SDHCI_UHS2_TEST_ERR_DEADLOCK_TIMEOUT 0x00020000 +#define SDHCI_UHS2_TEST_ERR_VENDOR 0x08000000 + +#define SDHCI_UHS2_EMBED_CTRL 0xE6 +#define SDHCI_UHS2_VENDOR 0xE8 + #define SDHCI_SLOT_INT_STATUS 0xFC #define SDHCI_HOST_VERSION 0xFE @@ -517,6 +776,7 @@ struct sdhci_host { #define SDHCI_SIGNALING_330 (1<<14) /* Host is capable of 3.3V signaling */ #define SDHCI_SIGNALING_180 (1<<15) /* Host is capable of 1.8V signaling */ #define SDHCI_SIGNALING_120 (1<<16) /* Host is capable of 1.2V signaling */ +#define SDHCI_USE_UHS2 (1<<17) /* Support UHS2 */ unsigned int version; /* SDHCI spec. version */ @@ -618,7 +878,7 @@ struct sdhci_ops { void (*set_clock)(struct sdhci_host *host, unsigned int clock); void (*set_power)(struct sdhci_host *host, unsigned char mode, - unsigned short vdd); + unsigned short vdd, unsigned short vdd2); u32 (*irq)(struct sdhci_host *host, u32 intmask); @@ -757,10 +1017,6 @@ 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); void sdhci_enable_clk(struct sdhci_host *host, u16 clk); -void sdhci_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd); -void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, - unsigned short vdd); void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq); void sdhci_set_bus_width(struct sdhci_host *host, int width); void sdhci_reset(struct sdhci_host *host, u8 mask); @@ -780,6 +1036,20 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host); int sdhci_runtime_resume_host(struct sdhci_host *host, int soft_reset); #endif +/* sdhci_uhs2.c needed */ +extern void sdhci_enable_preset_value(struct sdhci_host *host, bool enable); +extern void sdhci_dumpregs(struct sdhci_host *host); +extern void sdhci_finish_data(struct sdhci_host *host); +extern void sdhci_set_power(struct sdhci_host *host, unsigned char mode, + unsigned short vdd, unsigned short vdd2); +extern void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, + unsigned short vdd, unsigned short vdd2); +extern void sdhci_runtime_pm_bus_off(struct sdhci_host *host); + +extern void sdhci_uhs2_disable_clk(struct mmc_host *mmc); +extern void sdhci_uhs2_enable_clk(struct mmc_host *mmc); +extern void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq); + void sdhci_cqe_enable(struct mmc_host *mmc); void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery); bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error, diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index bb90757ecace..6d3b11f16a8d 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -205,14 +205,14 @@ static void sdhci_j721e_4bit_set_clock(struct sdhci_host *host, } static void sdhci_am654_set_power(struct sdhci_host *host, unsigned char mode, - unsigned short vdd) + unsigned short vdd, unsigned short vdd2) { if (!IS_ERR(host->mmc->supply.vmmc)) { struct mmc_host *mmc = host->mmc; mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd); } - sdhci_set_power_noreg(host, mode, vdd); + sdhci_set_power_noreg(host, mode, vdd, -1); } static void sdhci_am654_write_b(struct sdhci_host *host, u8 val, int reg) diff --git a/include/linux/mmc/uhs2.h b/include/linux/mmc/uhs2.h new file mode 100644 index 000000000000..c61670e3cc06 --- /dev/null +++ b/include/linux/mmc/uhs2.h @@ -0,0 +1,270 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * linux/drivers/mmc/host/uhs2.h - UHS-II driver + * + * Header file for UHS-II packets, Host Controller registers and I/O + * accessors. + * + * Copyright (C) 2014 Intel Corp, All Rights Reserved. + */ +#ifndef LINUX_MMC_UHS2_H +#define LINUX_MMC_UHS2_H + +struct mmc_request; + +/* LINK Layer definition */ +/* UHS2 Header */ +#define UHS2_NATIVE_PACKET_POS 7 +#define UHS2_NATIVE_PACKET (1 << UHS2_NATIVE_PACKET_POS) + +#define UHS2_PACKET_TYPE_POS 4 +#define UHS2_PACKET_TYPE_CCMD (0 << UHS2_PACKET_TYPE_POS) +#define UHS2_PACKET_TYPE_DCMD (1 << UHS2_PACKET_TYPE_POS) +#define UHS2_PACKET_TYPE_RES (2 << UHS2_PACKET_TYPE_POS) +#define UHS2_PACKET_TYPE_DATA (3 << UHS2_PACKET_TYPE_POS) +#define UHS2_PACKET_TYPE_MSG (7 << UHS2_PACKET_TYPE_POS) + +#define UHS2_DEST_ID_MASK 0x0F +#define UHS2_DEST_ID 0x1 + +#define UHS2_SRC_ID_POS 12 +#define UHS2_SRC_ID_MASK 0xF000 + +#define UHS2_TRANS_ID_POS 8 +#define UHS2_TRANS_ID_MASK 0x0700 + +/* UHS2 MSG */ +#define UHS2_MSG_CTG_POS 5 +#define UHS2_MSG_CTG_LMSG 0x00 +#define UHS2_MSG_CTG_INT 0x60 +#define UHS2_MSG_CTG_AMSG 0x80 + +#define UHS2_MSG_CTG_FCREQ 0x00 +#define UHS2_MSG_CTG_FCRDY 0x01 +#define UHS2_MSG_CTG_STAT 0x02 + +#define UHS2_MSG_CODE_POS 8 +#define UHS2_MSG_CODE_FC_UNRECOVER_ERR 0x8 +#define UHS2_MSG_CODE_STAT_UNRECOVER_ERR 0x8 +#define UHS2_MSG_CODE_STAT_RECOVER_ERR 0x1 + +/* TRANS Layer definition */ + +/* Native packets*/ +#define UHS2_NATIVE_CMD_RW_POS 7 +#define UHS2_NATIVE_CMD_WRITE (1 << UHS2_NATIVE_CMD_RW_POS) +#define UHS2_NATIVE_CMD_READ (0 << UHS2_NATIVE_CMD_RW_POS) + +#define UHS2_NATIVE_CMD_PLEN_POS 4 +#define UHS2_NATIVE_CMD_PLEN_4B (1 << UHS2_NATIVE_CMD_PLEN_POS) +#define UHS2_NATIVE_CMD_PLEN_8B (2 << UHS2_NATIVE_CMD_PLEN_POS) +#define UHS2_NATIVE_CMD_PLEN_16B (3 << UHS2_NATIVE_CMD_PLEN_POS) + +#define UHS2_NATIVE_CCMD_GET_MIOADR_MASK 0xF00 +#define UHS2_NATIVE_CCMD_MIOADR_MASK 0x0F + +#define UHS2_NATIVE_CCMD_LIOADR_POS 8 +#define UHS2_NATIVE_CCMD_GET_LIOADR_MASK 0x0FF + +#define UHS2_DCMD_DM_POS 6 +#define UHS2_DCMD_2L_HD_MODE (1 << UHS2_DCMD_DM_POS) +#define UHS2_DCMD_LM_POS 5 +#define UHS2_DCMD_LM_TLEN_EXIST (1 << UHS2_DCMD_LM_POS) +#define UHS2_DCMD_TLUM_POS 4 +#define UHS2_DCMD_TLUM_BYTE_MODE (1 << UHS2_DCMD_TLUM_POS) +#define UHS2_NATIVE_DCMD_DAM_POS 3 +#define UHS2_NATIVE_DCMD_DAM_IO (1 << UHS2_NATIVE_DCMD_DAM_POS) +/* + * Per UHS2 spec, DCMD payload should be MSB first. There may be + * two types of data be assembled to MSB: + * 1. TLEN: Input block size for signle read/write and number of blocks + * for multiple read/write to calculate TLEN as MSB first per spec. + * 2. SD command argument. + */ +static inline u32 uhs2_dcmd_convert_msb(u32 input) +{ + u32 ret = 0; + + ret = ((input & 0xFF) << 24) | + (((input >> 8) & 0xFF) << 16) | + (((input >> 16) & 0xFF) << 8) | + ((input >> 24) & 0xFF); + return ret; +} + +#define UHS2_RES_NACK_POS 7 +#define UHS2_RES_NACK_MASK (0x1 << UHS2_RES_NACK_POS) + +#define UHS2_RES_ECODE_POS 4 +#define UHS2_RES_ECODE_MASK 0x7 +#define UHS2_RES_ECODE_COND 1 +#define UHS2_RES_ECODE_ARG 2 +#define UHS2_RES_ECODE_GEN 3 + +/* IOADR of device registers */ +#define UHS2_IOADR_GENERIC_CAPS 0x00 +#define UHS2_IOADR_PHY_CAPS 0x02 +#define UHS2_IOADR_LINK_CAPS 0x04 +#define UHS2_IOADR_RSV_CAPS 0x06 +#define UHS2_IOADR_GENERIC_SETTINGS 0x08 +#define UHS2_IOADR_PHY_SETTINGS 0x0A +#define UHS2_IOADR_LINK_SETTINGS 0x0C +#define UHS2_IOADR_PRESET 0x40 + +/* SD application packets */ +#define UHS2_SD_CMD_INDEX_POS 8 + +#define UHS2_SD_CMD_APP_POS 14 +#define UHS2_SD_CMD_APP (1 << UHS2_SD_CMD_APP_POS) + +struct uhs2_command { + u16 header; + u16 arg; + u32 *payload; + u32 payload_len; + u32 packet_len; + u8 *resp; + u8 resp_len; +}; + +struct uhs2_host_caps { + u32 dap; + u32 gap; + u32 maxblk_len; + u32 n_fcu; + u8 n_lanes; + u8 addr64; + u8 card_type; + u8 phy_rev; + u8 speed_range; + u8 can_hibernate; + u8 n_lss_sync; + u8 n_lss_dir; + u8 link_rev; + u8 host_type; + u8 n_data_gap; + + u32 maxblk_len_set; + u32 n_fcu_set; + u8 n_lanes_set; + u8 n_lss_sync_set; + u8 n_lss_dir_set; + u8 n_data_gap_set; + u8 max_retry_set; +}; + +struct uhs2_card_prop { + u32 node_id; + u32 dap; + u32 gap; + u32 n_fcu; + u32 maxblk_len; + u8 n_lanes; + u8 dadr_len; + u8 app_type; + u8 phy_minor_rev; + u8 phy_major_rev; + u8 can_hibernate; + u8 n_lss_sync; + u8 n_lss_dir; + u8 link_minor_rev; + u8 link_major_rev; + u8 dev_type; + u8 n_data_gap; + + u32 n_fcu_set; + u32 maxblk_len_set; + u8 n_lanes_set; + u8 speed_range_set; + u8 n_lss_sync_set; + u8 n_lss_dir_set; + u8 n_data_gap_set; + u8 pwrctrl_mode_set; + u8 max_retry_set; + + u8 cfg_complete; +}; + +enum uhs2_act { + SET_CONFIG, + ENABLE_INT, + DISABLE_INT, + SET_SPEED_B, + CHECK_DORMANT, +}; + +/* UHS-II Device Registers */ +#define UHS2_DEV_CONFIG_REG 0x000 + +/* General Caps and Settings registers */ +#define UHS2_DEV_CONFIG_GEN_CAPS (UHS2_DEV_CONFIG_REG + 0x000) +#define UHS2_DEV_CONFIG_N_LANES_POS 8 +#define UHS2_DEV_CONFIG_N_LANES_MASK 0x3F +#define UHS2_DEV_CONFIG_2L_HD_FD 0x1 +#define UHS2_DEV_CONFIG_2D1U_FD 0x2 +#define UHS2_DEV_CONFIG_1D2U_FD 0x4 +#define UHS2_DEV_CONFIG_2D2U_FD 0x8 +#define UHS2_DEV_CONFIG_DADR_POS 14 +#define UHS2_DEV_CONFIG_DADR_MASK 0x1 +#define UHS2_DEV_CONFIG_APP_POS 16 +#define UHS2_DEV_CONFIG_APP_MASK 0xFF +#define UHS2_DEV_CONFIG_APP_SD_MEM 0x1 + +#define UHS2_DEV_CONFIG_GEN_SET (UHS2_DEV_CONFIG_REG + 0x008) +#define UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD 0x0 +#define UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE (0x1 << 31) + +/* PHY Caps and Settings registers */ +#define UHS2_DEV_CONFIG_PHY_CAPS (UHS2_DEV_CONFIG_REG + 0x002) +#define UHS2_DEV_CONFIG_PHY_MINOR_MASK 0xF +#define UHS2_DEV_CONFIG_PHY_MAJOR_POS 4 +#define UHS2_DEV_CONFIG_PHY_MAJOR_MASK 0x3 +#define UHS2_DEV_CONFIG_CAN_HIBER_POS 15 +#define UHS2_DEV_CONFIG_CAN_HIBER_MASK 0x1 +#define UHS2_DEV_CONFIG_PHY_CAPS1 (UHS2_DEV_CONFIG_REG + 0x003) +#define UHS2_DEV_CONFIG_N_LSS_SYN_MASK 0xF +#define UHS2_DEV_CONFIG_N_LSS_DIR_POS 4 +#define UHS2_DEV_CONFIG_N_LSS_DIR_MASK 0xF + +#define UHS2_DEV_CONFIG_PHY_SET (UHS2_DEV_CONFIG_REG + 0x00A) +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_POS 6 +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_A 0x0 +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_B 0x1 + +/* LINK-TRAN Caps and Settins registers */ +#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS (UHS2_DEV_CONFIG_REG + 0x004) +#define UHS2_DEV_CONFIG_LT_MINOR_MASK 0xF +#define UHS2_DEV_CONFIG_LT_MAJOR_POS 4 +#define UHS2_DEV_CONFIG_LT_MAJOR_MASK 0x3 +#define UHS2_DEV_CONFIG_N_FCU_POS 8 +#define UHS2_DEV_CONFIG_N_FCU_MASK 0xFF +#define UHS2_DEV_CONFIG_DEV_TYPE_POS 16 +#define UHS2_DEV_CONFIG_DEV_TYPE_MASK 0x7 +#define UHS2_DEV_CONFIG_MAX_BLK_LEN_POS 20 +#define UHS2_DEV_CONFIG_MAX_BLK_LEN_MASK 0xFFF +#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS1 (UHS2_DEV_CONFIG_REG + 0x005) +#define UHS2_DEV_CONFIG_N_DATA_GAP_MASK 0xFF + +#define UHS2_DEV_CONFIG_LINK_TRAN_SET (UHS2_DEV_CONFIG_REG + 0x00C) +#define UHS2_DEV_CONFIG_LT_SET_MAX_BLK_LEN 0x200 +#define UHS2_DEV_CONFIG_LT_SET_MAX_RETRY_POS 16 + +/* Preset register */ +#define UHS2_DEV_CONFIG_PRESET (UHS2_DEV_CONFIG_REG + 0x040) + +#define UHS2_DEV_INT_REG 0x100 + +#define UHS2_DEV_STATUS_REG 0x180 + +#define UHS2_DEV_CMD_REG 0x200 +#define UHS2_DEV_CMD_FULL_RESET (UHS2_DEV_CMD_REG + 0x000) +#define UHS2_DEV_CMD_GO_DORMANT_STATE (UHS2_DEV_CMD_REG + 0x001) +#define UHS2_DEV_CMD_DORMANT_HIBER (0x1 << 7) +#define UHS2_DEV_CMD_DEVICE_INIT (UHS2_DEV_CMD_REG + 0x002) +#define UHS2_DEV_CMD_ENUMERATE (UHS2_DEV_CMD_REG + 0x003) +#define UHS2_DEV_CMD_TRANS_ABORT (UHS2_DEV_CMD_REG + 0x004) + +#define UHS2_RCLK_MAX 52000000 +#define UHS2_RCLK_MIN 26000000 + +#endif /* LINUX_MMC_UHS2_H */