// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2011, Marvell Semiconductor Inc. * Lei Wen * * Back ported to the 8xx platform (from the 8260 platform) by * Murray.Jensen@cmst.csiro.au, 27-Jan-01. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void sdhci_reset(struct sdhci_host *host, u8 mask) { unsigned long timeout; /* Wait max 100 ms */ timeout = 100; sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET); while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) { if (timeout == 0) { printf("%s: Reset 0x%x never completed.\n", __func__, (int)mask); return; } timeout--; udelay(1000); } } static void sdhci_cmd_done(struct sdhci_host *host, struct mmc_cmd *cmd) { int i; if (cmd->resp_type & MMC_RSP_136) { /* CRC is stripped so we need to do some shifting. */ for (i = 0; i < 4; i++) { cmd->response[i] = sdhci_readl(host, SDHCI_RESPONSE + (3-i)*4) << 8; if (i != 3) cmd->response[i] |= sdhci_readb(host, SDHCI_RESPONSE + (3-i)*4-1); } } else { cmd->response[0] = sdhci_readl(host, SDHCI_RESPONSE); } } static void sdhci_transfer_pio(struct sdhci_host *host, struct mmc_data *data) { int i; char *offs; for (i = 0; i < data->blocksize; i += 4) { offs = data->dest + i; if (data->flags == MMC_DATA_READ) *(u32 *)offs = sdhci_readl(host, SDHCI_BUFFER); else sdhci_writel(host, *(u32 *)offs, SDHCI_BUFFER); } } #if (CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data, int *is_aligned, int trans_bytes) { dma_addr_t dma_addr; unsigned char ctrl; void *buf; if (data->flags == MMC_DATA_READ) buf = data->dest; else buf = (void *)data->src; ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); ctrl &= ~SDHCI_CTRL_DMA_MASK; if (host->flags & USE_ADMA64) ctrl |= SDHCI_CTRL_ADMA64; else if (host->flags & USE_ADMA) ctrl |= SDHCI_CTRL_ADMA32; sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); if (host->flags & USE_SDMA && (host->force_align_buffer || (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR && ((unsigned long)buf & 0x7) != 0x0))) { *is_aligned = 0; if (data->flags != MMC_DATA_READ) memcpy(host->align_buffer, buf, trans_bytes); buf = host->align_buffer; } host->start_addr = dma_map_single(buf, trans_bytes, mmc_get_dma_dir(data)); if (host->flags & USE_SDMA) { dma_addr = dev_phys_to_bus(mmc_to_dev(host->mmc), host->start_addr); sdhci_writel(host, dma_addr, SDHCI_DMA_ADDRESS); } #if CONFIG_IS_ENABLED(MMC_SDHCI_ADMA) else if (host->flags & (USE_ADMA | USE_ADMA64)) { sdhci_prepare_adma_table(host, host->adma_desc_table, data, host->start_addr); sdhci_writel(host, lower_32_bits(host->adma_addr), SDHCI_ADMA_ADDRESS); if (host->flags & USE_ADMA64) sdhci_writel(host, upper_32_bits(host->adma_addr), SDHCI_ADMA_ADDRESS_HI); } #endif } #else static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data, int *is_aligned, int trans_bytes) {} #endif static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data) { dma_addr_t start_addr = host->start_addr; unsigned int stat, rdy, mask, timeout, block = 0; bool transfer_done = false; timeout = 1000000; rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL; mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE; do { stat = sdhci_readl(host, SDHCI_INT_STATUS); if (stat & SDHCI_INT_ERROR) { pr_debug("%s: Error detected in status(0x%X)!\n", __func__, stat); return -EIO; } if (!transfer_done && (stat & rdy)) { if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask)) continue; sdhci_writel(host, rdy, SDHCI_INT_STATUS); sdhci_transfer_pio(host, data); data->dest += data->blocksize; if (++block >= data->blocks) { /* Keep looping until the SDHCI_INT_DATA_END is * cleared, even if we finished sending all the * blocks. */ transfer_done = true; continue; } } if ((host->flags & USE_DMA) && !transfer_done && (stat & SDHCI_INT_DMA_END)) { sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS); if (host->flags & USE_SDMA) { start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1); start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE; start_addr = dev_phys_to_bus(mmc_to_dev(host->mmc), start_addr); sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS); } } if (timeout-- > 0) udelay(10); else { printf("%s: Transfer data timeout\n", __func__); return -ETIMEDOUT; } } while (!(stat & SDHCI_INT_DATA_END)); #if (CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)) dma_unmap_single(host->start_addr, data->blocks * data->blocksize, mmc_get_dma_dir(data)); #endif return 0; } /* * No command will be sent by driver if card is busy, so driver must wait * for card ready state. * Every time when card is busy after timeout then (last) timeout value will be * increased twice but only if it doesn't exceed global defined maximum. * Each function call will use last timeout value. */ #define SDHCI_CMD_MAX_TIMEOUT 3200 #define SDHCI_CMD_DEFAULT_TIMEOUT 100 #define SDHCI_READ_STATUS_TIMEOUT 1000 #ifdef CONFIG_DM_MMC static int sdhci_send_command(struct udevice *dev, struct mmc_cmd *cmd, struct mmc_data *data) { struct mmc *mmc = mmc_get_mmc_dev(dev); #else static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) { #endif struct sdhci_host *host = mmc->priv; unsigned int stat = 0; int ret = 0; int trans_bytes = 0, is_aligned = 1; u32 mask, flags, mode = 0; unsigned int time = 0; int mmc_dev = mmc_get_blk_desc(mmc)->devnum; ulong start = get_timer(0); host->start_addr = 0; /* Timeout unit - ms */ static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT; mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT; /* We shouldn't wait for data inihibit for stop commands, even though they might use busy signaling */ if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION || ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK || cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) && !data)) mask &= ~SDHCI_DATA_INHIBIT; while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) { if (time >= cmd_timeout) { printf("%s: MMC: %d busy ", __func__, mmc_dev); if (2 * cmd_timeout <= SDHCI_CMD_MAX_TIMEOUT) { cmd_timeout += cmd_timeout; printf("timeout increasing to: %u ms.\n", cmd_timeout); } else { puts("timeout.\n"); return -ECOMM; } } time++; udelay(1000); } sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); mask = SDHCI_INT_RESPONSE; if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK || cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) && !data) mask = SDHCI_INT_DATA_AVAIL; if (!(cmd->resp_type & MMC_RSP_PRESENT)) flags = SDHCI_CMD_RESP_NONE; else if (cmd->resp_type & MMC_RSP_136) flags = SDHCI_CMD_RESP_LONG; else if (cmd->resp_type & MMC_RSP_BUSY) { flags = SDHCI_CMD_RESP_SHORT_BUSY; mask |= SDHCI_INT_DATA_END; } else flags = SDHCI_CMD_RESP_SHORT; if (cmd->resp_type & MMC_RSP_CRC) flags |= SDHCI_CMD_CRC; if (cmd->resp_type & MMC_RSP_OPCODE) flags |= SDHCI_CMD_INDEX; if (data || cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK || cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200) flags |= SDHCI_CMD_DATA; /* Set Transfer mode regarding to data flag */ if (data) { sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL); if (!(host->quirks & SDHCI_QUIRK_SUPPORT_SINGLE)) mode = SDHCI_TRNS_BLK_CNT_EN; trans_bytes = data->blocks * data->blocksize; if (data->blocks > 1) mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_BLK_CNT_EN; if (data->flags == MMC_DATA_READ) mode |= SDHCI_TRNS_READ; if (host->flags & USE_DMA) { mode |= SDHCI_TRNS_DMA; sdhci_prepare_dma(host, data, &is_aligned, trans_bytes); } sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, data->blocksize), SDHCI_BLOCK_SIZE); sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT); sdhci_writew(host, mode, SDHCI_TRANSFER_MODE); } else if (cmd->resp_type & MMC_RSP_BUSY) { sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL); } sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT); sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND); start = get_timer(0); do { stat = sdhci_readl(host, SDHCI_INT_STATUS); if (stat & SDHCI_INT_ERROR) break; if (host->quirks & SDHCI_QUIRK_BROKEN_R1B && cmd->resp_type & MMC_RSP_BUSY && !data) { unsigned int state = sdhci_readl(host, SDHCI_PRESENT_STATE); if (!(state & SDHCI_DAT_ACTIVE)) return 0; } if (get_timer(start) >= SDHCI_READ_STATUS_TIMEOUT) { printf("%s: Timeout for status update: %08x %08x\n", __func__, stat, mask); return -ETIMEDOUT; } } while ((stat & mask) != mask); if ((stat & (SDHCI_INT_ERROR | mask)) == mask) { sdhci_cmd_done(host, cmd); sdhci_writel(host, mask, SDHCI_INT_STATUS); } else ret = -1; if (!ret && data) ret = sdhci_transfer_data(host, data); if (host->quirks & SDHCI_QUIRK_WAIT_SEND_CMD) udelay(1000); stat = sdhci_readl(host, SDHCI_INT_STATUS); sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS); if (!ret) { if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !is_aligned && (data->flags == MMC_DATA_READ)) memcpy(data->dest, host->align_buffer, trans_bytes); return 0; } sdhci_reset(host, SDHCI_RESET_CMD); sdhci_reset(host, SDHCI_RESET_DATA); if (stat & SDHCI_INT_TIMEOUT) return -ETIMEDOUT; else return -ECOMM; } #if defined(CONFIG_DM_MMC) && CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING) static int sdhci_execute_tuning(struct udevice *dev, uint opcode) { int err; struct mmc *mmc = mmc_get_mmc_dev(dev); struct sdhci_host *host = mmc->priv; debug("%s\n", __func__); if (host->ops && host->ops->platform_execute_tuning) { err = host->ops->platform_execute_tuning(mmc, opcode); if (err) return err; return 0; } return 0; } #endif int sdhci_set_clock(struct mmc *mmc, unsigned int clock) { struct sdhci_host *host = mmc->priv; unsigned int div, clk = 0, timeout; int ret; /* Wait max 20 ms */ timeout = 200; while (sdhci_readl(host, SDHCI_PRESENT_STATE) & (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) { if (timeout == 0) { printf("%s: Timeout to wait cmd & data inhibit\n", __func__); return -EBUSY; } timeout--; udelay(100); } sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); if (clock == 0) return 0; if (host->ops && host->ops->set_delay) { ret = host->ops->set_delay(host); if (ret) { printf("%s: Error while setting tap delay\n", __func__); return ret; } } if (host->ops && host->ops->config_dll) { ret = host->ops->config_dll(host, clock, false); if (ret) { printf("%s: Error while configuring dll\n", __func__); return ret; } } if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { /* * Check if the Host Controller supports Programmable Clock * Mode. */ if (host->clk_mul) { for (div = 1; div <= 1024; div++) { if ((host->max_clk / div) <= clock) break; } /* * Set Programmable Clock Mode in the Clock * Control register. */ clk = SDHCI_PROG_CLOCK_MODE; div--; } else { /* Version 3.00 divisors must be a multiple of 2. */ if (host->max_clk <= clock) { div = 1; } else { for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; div += 2) { if ((host->max_clk / div) <= clock) break; } } div >>= 1; } } else { /* Version 2.00 divisors must be a power of 2. */ for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) { if ((host->max_clk / div) <= clock) break; } div >>= 1; } if (host->ops && host->ops->set_clock) host->ops->set_clock(host, div); if (host->ops && host->ops->config_dll) { ret = host->ops->config_dll(host, clock, true); if (ret) { printf("%s: Error while configuring dll\n", __func__); return ret; } } clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) << SDHCI_DIVIDER_HI_SHIFT; clk |= SDHCI_CLOCK_INT_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); /* Wait max 20 ms */ timeout = 20; while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) & SDHCI_CLOCK_INT_STABLE)) { if (timeout == 0) { printf("%s: Internal clock never stabilised.\n", __func__); return -EBUSY; } timeout--; udelay(1000); } clk |= SDHCI_CLOCK_CARD_EN; sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); return 0; } static void sdhci_set_power(struct sdhci_host *host, unsigned short power) { u8 pwr = 0; if (power != (unsigned short)-1) { switch (1 << power) { case MMC_VDD_165_195: pwr = SDHCI_POWER_180; break; case MMC_VDD_29_30: case MMC_VDD_30_31: pwr = SDHCI_POWER_300; break; case MMC_VDD_32_33: case MMC_VDD_33_34: pwr = SDHCI_POWER_330; break; } } if (pwr == 0) { sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); return; } pwr |= SDHCI_POWER_ON; sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); } void sdhci_set_uhs_timing(struct sdhci_host *host) { struct mmc *mmc = host->mmc; u32 reg; reg = sdhci_readw(host, SDHCI_HOST_CONTROL2); reg &= ~SDHCI_CTRL_UHS_MASK; switch (mmc->selected_mode) { case UHS_SDR25: case MMC_HS: reg |= SDHCI_CTRL_UHS_SDR25; break; case UHS_SDR50: case MMC_HS_52: reg |= SDHCI_CTRL_UHS_SDR50; break; case UHS_DDR50: case MMC_DDR_52: reg |= SDHCI_CTRL_UHS_DDR50; break; case UHS_SDR104: case MMC_HS_200: reg |= SDHCI_CTRL_UHS_SDR104; break; case MMC_HS_400: case MMC_HS_400_ES: reg |= SDHCI_CTRL_HS400; break; default: reg |= SDHCI_CTRL_UHS_SDR12; } sdhci_writew(host, reg, SDHCI_HOST_CONTROL2); } static void sdhci_set_voltage(struct sdhci_host *host) { if (IS_ENABLED(CONFIG_MMC_IO_VOLTAGE)) { struct mmc *mmc = (struct mmc *)host->mmc; u32 ctrl; ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); switch (mmc->signal_voltage) { case MMC_SIGNAL_VOLTAGE_330: #if CONFIG_IS_ENABLED(DM_REGULATOR) if (mmc->vqmmc_supply) { if (regulator_set_enable_if_allowed(mmc->vqmmc_supply, false)) { pr_err("failed to disable vqmmc-supply\n"); return; } if (regulator_set_value(mmc->vqmmc_supply, 3300000)) { pr_err("failed to set vqmmc-voltage to 3.3V\n"); return; } if (regulator_set_enable_if_allowed(mmc->vqmmc_supply, true)) { pr_err("failed to enable vqmmc-supply\n"); return; } } #endif if (IS_SD(mmc)) { ctrl &= ~SDHCI_CTRL_VDD_180; sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); } /* Wait for 5ms */ mdelay(5); /* 3.3V regulator output should be stable within 5 ms */ if (IS_SD(mmc)) { if (ctrl & SDHCI_CTRL_VDD_180) { pr_err("3.3V regulator output did not become stable\n"); return; } } break; case MMC_SIGNAL_VOLTAGE_180: #if CONFIG_IS_ENABLED(DM_REGULATOR) if (mmc->vqmmc_supply) { if (regulator_set_enable_if_allowed(mmc->vqmmc_supply, false)) { pr_err("failed to disable vqmmc-supply\n"); return; } if (regulator_set_value(mmc->vqmmc_supply, 1800000)) { pr_err("failed to set vqmmc-voltage to 1.8V\n"); return; } if (regulator_set_enable_if_allowed(mmc->vqmmc_supply, true)) { pr_err("failed to enable vqmmc-supply\n"); return; } } #endif if (IS_SD(mmc)) { ctrl |= SDHCI_CTRL_VDD_180; sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); } /* Wait for 5 ms */ mdelay(5); /* 1.8V regulator output has to be stable within 5 ms */ if (IS_SD(mmc)) { if (!(ctrl & SDHCI_CTRL_VDD_180)) { pr_err("1.8V regulator output did not become stable\n"); return; } } break; default: /* No signal voltage switch required */ return; } } } void sdhci_set_control_reg(struct sdhci_host *host) { sdhci_set_voltage(host); sdhci_set_uhs_timing(host); } #ifdef CONFIG_DM_MMC static int sdhci_set_ios(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); #else static int sdhci_set_ios(struct mmc *mmc) { #endif u32 ctrl; struct sdhci_host *host = mmc->priv; bool no_hispd_bit = false; if (host->ops && host->ops->set_control_reg) host->ops->set_control_reg(host); if (mmc->clock != host->clock) sdhci_set_clock(mmc, mmc->clock); if (mmc->clk_disable) sdhci_set_clock(mmc, 0); /* Set bus width */ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); if (mmc->bus_width == 8) { ctrl &= ~SDHCI_CTRL_4BITBUS; if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) || (host->quirks & SDHCI_QUIRK_USE_WIDE8)) ctrl |= SDHCI_CTRL_8BITBUS; } else { if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) || (host->quirks & SDHCI_QUIRK_USE_WIDE8)) ctrl &= ~SDHCI_CTRL_8BITBUS; if (mmc->bus_width == 4) ctrl |= SDHCI_CTRL_4BITBUS; else ctrl &= ~SDHCI_CTRL_4BITBUS; } if ((host->quirks & SDHCI_QUIRK_NO_HISPD_BIT) || (host->quirks & SDHCI_QUIRK_BROKEN_HISPD_MODE)) { ctrl &= ~SDHCI_CTRL_HISPD; no_hispd_bit = true; } if (!no_hispd_bit) { if (mmc->selected_mode == MMC_HS || mmc->selected_mode == SD_HS || mmc->selected_mode == MMC_HS_52 || mmc->selected_mode == MMC_DDR_52 || mmc->selected_mode == MMC_HS_200 || mmc->selected_mode == MMC_HS_400 || mmc->selected_mode == MMC_HS_400_ES || mmc->selected_mode == UHS_SDR25 || mmc->selected_mode == UHS_SDR50 || mmc->selected_mode == UHS_SDR104 || mmc->selected_mode == UHS_DDR50) ctrl |= SDHCI_CTRL_HISPD; else ctrl &= ~SDHCI_CTRL_HISPD; } sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); /* If available, call the driver specific "post" set_ios() function */ if (host->ops && host->ops->set_ios_post) return host->ops->set_ios_post(host); return 0; } static int sdhci_init(struct mmc *mmc) { struct sdhci_host *host = mmc->priv; #if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_GPIO) struct udevice *dev = mmc->dev; gpio_request_by_name(dev, "cd-gpios", 0, &host->cd_gpio, GPIOD_IS_IN); #endif sdhci_reset(host, SDHCI_RESET_ALL); #if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER) host->align_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER; /* * Always use this bounce-buffer when CONFIG_FIXED_SDHCI_ALIGNED_BUFFER * is defined. */ host->force_align_buffer = true; #else if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) { host->align_buffer = memalign(8, 512 * 1024); if (!host->align_buffer) { printf("%s: Aligned buffer alloc failed!!!\n", __func__); return -ENOMEM; } } #endif sdhci_set_power(host, fls(mmc->cfg->voltages) - 1); if (host->ops && host->ops->get_cd) host->ops->get_cd(host); /* Enable only interrupts served by the SD controller */ sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK, SDHCI_INT_ENABLE); /* Mask all sdhci interrupt sources */ sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE); return 0; } #ifdef CONFIG_DM_MMC int sdhci_probe(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); return sdhci_init(mmc); } static int sdhci_deferred_probe(struct udevice *dev) { int err; struct mmc *mmc = mmc_get_mmc_dev(dev); struct sdhci_host *host = mmc->priv; if (host->ops && host->ops->deferred_probe) { err = host->ops->deferred_probe(host); if (err) return err; } return 0; } static int sdhci_get_cd(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); struct sdhci_host *host = mmc->priv; int value; /* If nonremovable, assume that the card is always present. */ if (mmc->cfg->host_caps & MMC_CAP_NONREMOVABLE) return 1; /* If polling, assume that the card is always present. */ if (mmc->cfg->host_caps & MMC_CAP_NEEDS_POLL) return 1; #if CONFIG_IS_ENABLED(DM_GPIO) value = dm_gpio_get_value(&host->cd_gpio); if (value >= 0) { if (mmc->cfg->host_caps & MMC_CAP_CD_ACTIVE_HIGH) return !value; else return value; } #endif value = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT); if (mmc->cfg->host_caps & MMC_CAP_CD_ACTIVE_HIGH) return !value; else return value; } static int sdhci_wait_dat0(struct udevice *dev, int state, int timeout_us) { int tmp; struct mmc *mmc = mmc_get_mmc_dev(dev); struct sdhci_host *host = mmc->priv; unsigned long timeout = timer_get_us() + timeout_us; // readx_poll_timeout is unsuitable because sdhci_readl accepts // two arguments do { tmp = sdhci_readl(host, SDHCI_PRESENT_STATE); if (!!(tmp & SDHCI_DATA_0_LVL_MASK) == !!state) return 0; } while (!timeout_us || !time_after(timer_get_us(), timeout)); return -ETIMEDOUT; } #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT) static int sdhci_set_enhanced_strobe(struct udevice *dev) { struct mmc *mmc = mmc_get_mmc_dev(dev); struct sdhci_host *host = mmc->priv; if (host->ops && host->ops->set_enhanced_strobe) return host->ops->set_enhanced_strobe(host); return -ENOTSUPP; } #endif const struct dm_mmc_ops sdhci_ops = { .send_cmd = sdhci_send_command, .set_ios = sdhci_set_ios, .get_cd = sdhci_get_cd, .deferred_probe = sdhci_deferred_probe, #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING) .execute_tuning = sdhci_execute_tuning, #endif .wait_dat0 = sdhci_wait_dat0, #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT) .set_enhanced_strobe = sdhci_set_enhanced_strobe, #endif }; #else static const struct mmc_ops sdhci_ops = { .send_cmd = sdhci_send_command, .set_ios = sdhci_set_ios, .init = sdhci_init, }; #endif int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, u32 f_max, u32 f_min) { u32 caps, caps_1 = 0; #if CONFIG_IS_ENABLED(DM_MMC) u64 dt_caps, dt_caps_mask; dt_caps_mask = dev_read_u64_default(host->mmc->dev, "sdhci-caps-mask", 0); dt_caps = dev_read_u64_default(host->mmc->dev, "sdhci-caps", 0); caps = ~lower_32_bits(dt_caps_mask) & sdhci_readl(host, SDHCI_CAPABILITIES); caps |= lower_32_bits(dt_caps); #else caps = sdhci_readl(host, SDHCI_CAPABILITIES); #endif debug("%s, caps: 0x%x\n", __func__, caps); #if CONFIG_IS_ENABLED(MMC_SDHCI_SDMA) if ((caps & SDHCI_CAN_DO_SDMA)) { host->flags |= USE_SDMA; } else { debug("%s: Your controller doesn't support SDMA!!\n", __func__); } #endif #if CONFIG_IS_ENABLED(MMC_SDHCI_ADMA) if (!(caps & SDHCI_CAN_DO_ADMA2)) { printf("%s: Your controller doesn't support ADMA!!\n", __func__); return -EINVAL; } if (!host->adma_desc_table) { host->adma_desc_table = sdhci_adma_init(); host->adma_addr = virt_to_phys(host->adma_desc_table); } if (IS_ENABLED(CONFIG_MMC_SDHCI_ADMA_64BIT)) host->flags |= USE_ADMA64; else host->flags |= USE_ADMA; #endif if (host->quirks & SDHCI_QUIRK_REG32_RW) host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16; else host->version = sdhci_readw(host, SDHCI_HOST_VERSION); cfg->name = host->name; #ifndef CONFIG_DM_MMC cfg->ops = &sdhci_ops; #endif /* Check whether the clock multiplier is supported or not */ if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { #if CONFIG_IS_ENABLED(DM_MMC) caps_1 = ~upper_32_bits(dt_caps_mask) & sdhci_readl(host, SDHCI_CAPABILITIES_1); caps_1 |= upper_32_bits(dt_caps); #else caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1); #endif debug("%s, caps_1: 0x%x\n", __func__, caps_1); host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >> SDHCI_CLOCK_MUL_SHIFT; /* * In case the value in Clock Multiplier is 0, then programmable * clock mode is not supported, otherwise the actual clock * multiplier is one more than the value of Clock Multiplier * in the Capabilities Register. */ if (host->clk_mul) host->clk_mul += 1; } if (host->max_clk == 0) { if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; else host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT; host->max_clk *= 1000000; if (host->clk_mul) host->max_clk *= host->clk_mul; } if (host->max_clk == 0) { printf("%s: Hardware doesn't specify base clock frequency\n", __func__); return -EINVAL; } if (f_max && (f_max < host->max_clk)) cfg->f_max = f_max; else cfg->f_max = host->max_clk; if (f_min) cfg->f_min = f_min; else { if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_300; else cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_200; } cfg->voltages = 0; if (caps & SDHCI_CAN_VDD_330) cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34; if (caps & SDHCI_CAN_VDD_300) cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31; if (caps & SDHCI_CAN_VDD_180) cfg->voltages |= MMC_VDD_165_195; if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE) cfg->voltages |= host->voltages; if (caps & SDHCI_CAN_DO_HISPD) cfg->host_caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz; cfg->host_caps |= MMC_MODE_4BIT; /* Since Host Controller Version3.0 */ if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { if (!(caps & SDHCI_CAN_DO_8BIT)) cfg->host_caps &= ~MMC_MODE_8BIT; } if (host->quirks & SDHCI_QUIRK_BROKEN_HISPD_MODE) { cfg->host_caps &= ~MMC_MODE_HS; cfg->host_caps &= ~MMC_MODE_HS_52MHz; } if (!(cfg->voltages & MMC_VDD_165_195) || (host->quirks & SDHCI_QUIRK_NO_1_8_V)) caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50); if (caps_1 & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50)) cfg->host_caps |= MMC_CAP(UHS_SDR12) | MMC_CAP(UHS_SDR25); if (caps_1 & SDHCI_SUPPORT_SDR104) { cfg->host_caps |= MMC_CAP(UHS_SDR104) | MMC_CAP(UHS_SDR50); /* * SD3.0: SDR104 is supported so (for eMMC) the caps2 * field can be promoted to support HS200. */ cfg->host_caps |= MMC_CAP(MMC_HS_200); } else if (caps_1 & SDHCI_SUPPORT_SDR50) { cfg->host_caps |= MMC_CAP(UHS_SDR50); } if ((host->quirks & SDHCI_QUIRK_CAPS_BIT63_FOR_HS400) && (caps_1 & SDHCI_SUPPORT_HS400)) cfg->host_caps |= MMC_CAP(MMC_HS_400); if (caps_1 & SDHCI_SUPPORT_DDR50) cfg->host_caps |= MMC_CAP(UHS_DDR50); if (host->host_caps) cfg->host_caps |= host->host_caps; cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; return 0; } #ifdef CONFIG_BLK int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg) { return mmc_bind(dev, mmc, cfg); } #else int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min) { int ret; ret = sdhci_setup_cfg(&host->cfg, host, f_max, f_min); if (ret) return ret; host->mmc = mmc_create(&host->cfg, host); if (host->mmc == NULL) { printf("%s: mmc create fail!\n", __func__); return -ENOMEM; } return 0; } #endif