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-rw-r--r--drivers/cadence/emmc/cdns_sdmmc.c824
1 files changed, 824 insertions, 0 deletions
diff --git a/drivers/cadence/emmc/cdns_sdmmc.c b/drivers/cadence/emmc/cdns_sdmmc.c
new file mode 100644
index 0000000..d2cd4d6
--- /dev/null
+++ b/drivers/cadence/emmc/cdns_sdmmc.c
@@ -0,0 +1,824 @@
+/*
+ * Copyright (c) 2022-2023, Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <drivers/cadence/cdns_sdmmc.h>
+#include <drivers/delay_timer.h>
+#include <drivers/mmc.h>
+#include <lib/mmio.h>
+#include <lib/utils.h>
+
+/* Card busy and present */
+#define CARD_BUSY 1
+#define CARD_NOT_BUSY 0
+
+/* 500 ms delay to read the RINST register */
+#define DELAY_MS_SRS_READ 500
+#define DELAY_RES 10
+
+/* SRS12 error mask */
+#define SRS12_ERR_MASK 0xFFFF8000
+
+/* Check DV dfi_init val=0 */
+#define IO_MASK_END_DATA 0x0
+
+/* Check DV dfi_init val=2; DDR Mode */
+#define IO_MASK_END_DATA_DDR 0x2
+#define IO_MASK_START_DATA 0x0
+#define DATA_SELECT_OE_END_DATA 0x1
+
+#define TIMEOUT 100000
+
+/* General define */
+#define SDHC_REG_MASK UINT_MAX
+#define SD_HOST_BLOCK_SIZE 0x200
+#define DTCVVAL_DEFAULT_VAL 0xE
+#define CDMMC_DMA_MAX_BUFFER_SIZE 64*1024
+#define CDNSMMC_ADDRESS_MASK U(0x0f)
+#define CONFIG_CDNS_DESC_COUNT 8
+
+void cdns_init(void);
+int cdns_send_cmd(struct mmc_cmd *cmd);
+int cdns_set_ios(unsigned int clk, unsigned int width);
+int cdns_prepare(int lba, uintptr_t buf, size_t size);
+int cdns_read(int lba, uintptr_t buf, size_t size);
+int cdns_write(int lba, uintptr_t buf, size_t size);
+
+const struct mmc_ops cdns_sdmmc_ops = {
+ .init = cdns_init,
+ .send_cmd = cdns_send_cmd,
+ .set_ios = cdns_set_ios,
+ .prepare = cdns_prepare,
+ .read = cdns_read,
+ .write = cdns_write,
+};
+
+struct cdns_sdmmc_params cdns_params;
+struct cdns_sdmmc_combo_phy sdmmc_combo_phy_reg;
+struct cdns_sdmmc_sdhc sdmmc_sdhc_reg;
+#ifdef CONFIG_DMA_ADDR_T_64BIT
+struct cdns_idmac_desc cdns_desc[CONFIG_CDNS_DESC_COUNT];
+#else
+struct cdns_idmac_desc cdns_desc[CONFIG_CDNS_DESC_COUNT] __aligned(32);
+#endif
+
+bool data_cmd;
+
+int cdns_wait_ics(uint16_t timeout, uint32_t cdn_srs_res)
+{
+ /* Clock for sdmclk and sdclk */
+ uint32_t count = 0;
+ uint32_t data = 0;
+
+ /* Wait status command response ready */
+ do {
+ data = mmio_read_32(cdn_srs_res);
+ count++;
+ if (count >= timeout) {
+ return -ETIMEDOUT;
+ }
+ } while ((data & (1 << SDMMC_CDN_ICS)) == 0);
+
+ return 0;
+}
+
+int cdns_busy(void)
+{
+ unsigned int data;
+
+ data = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS09);
+ return (data & STATUS_DATA_BUSY) ? CARD_BUSY : CARD_NOT_BUSY;
+}
+
+int cdns_vol_reset(void)
+{
+ /* Reset embedded card */
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), (7 << SDMMC_CDN_BVS) | (1 << SDMMC_CDN_BP));
+ udelay(250);
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), (7 << SDMMC_CDN_BVS) | (0 << SDMMC_CDN_BP));
+ udelay(500);
+
+ /* Turn on supply voltage */
+ /* BVS = 7, BP = 1, BP2 only in UHS2 mode */
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), (7 << SDMMC_CDN_BVS) | (1 << SDMMC_CDN_BP));
+ udelay(250);
+ return 0;
+}
+
+void cdns_set_sdmmc_var(struct cdns_sdmmc_combo_phy *combo_phy_reg,
+ struct cdns_sdmmc_sdhc *sdhc_reg)
+{
+ /* Values are taken by the reference of cadence IP documents */
+ combo_phy_reg->cp_clk_wr_delay = 0;
+ combo_phy_reg->cp_clk_wrdqs_delay = 0;
+ combo_phy_reg->cp_data_select_oe_end = 0;
+ combo_phy_reg->cp_dll_bypass_mode = 1;
+ combo_phy_reg->cp_dll_locked_mode = 0;
+ combo_phy_reg->cp_dll_start_point = 0;
+ combo_phy_reg->cp_gate_cfg_always_on = 1;
+ combo_phy_reg->cp_io_mask_always_on = 0;
+ combo_phy_reg->cp_io_mask_end = 0;
+ combo_phy_reg->cp_io_mask_start = 0;
+ combo_phy_reg->cp_rd_del_sel = 52;
+ combo_phy_reg->cp_read_dqs_cmd_delay = 0;
+ combo_phy_reg->cp_read_dqs_delay = 0;
+ combo_phy_reg->cp_sw_half_cycle_shift = 0;
+ combo_phy_reg->cp_sync_method = 1;
+ combo_phy_reg->cp_underrun_suppress = 1;
+ combo_phy_reg->cp_use_ext_lpbk_dqs = 1;
+ combo_phy_reg->cp_use_lpbk_dqs = 1;
+ combo_phy_reg->cp_use_phony_dqs = 1;
+ combo_phy_reg->cp_use_phony_dqs_cmd = 1;
+
+ sdhc_reg->sdhc_extended_rd_mode = 1;
+ sdhc_reg->sdhc_extended_wr_mode = 1;
+ sdhc_reg->sdhc_hcsdclkadj = 0;
+ sdhc_reg->sdhc_idelay_val = 0;
+ sdhc_reg->sdhc_rdcmd_en = 1;
+ sdhc_reg->sdhc_rddata_en = 1;
+ sdhc_reg->sdhc_rw_compensate = 9;
+ sdhc_reg->sdhc_sdcfsh = 0;
+ sdhc_reg->sdhc_sdcfsl = 1;
+ sdhc_reg->sdhc_wrcmd0_dly = 1;
+ sdhc_reg->sdhc_wrcmd0_sdclk_dly = 0;
+ sdhc_reg->sdhc_wrcmd1_dly = 0;
+ sdhc_reg->sdhc_wrcmd1_sdclk_dly = 0;
+ sdhc_reg->sdhc_wrdata0_dly = 1;
+ sdhc_reg->sdhc_wrdata0_sdclk_dly = 0;
+ sdhc_reg->sdhc_wrdata1_dly = 0;
+ sdhc_reg->sdhc_wrdata1_sdclk_dly = 0;
+}
+
+static int cdns_program_phy_reg(struct cdns_sdmmc_combo_phy *combo_phy_reg,
+ struct cdns_sdmmc_sdhc *sdhc_reg)
+{
+ uint32_t value = 0;
+ int ret = 0;
+
+ /* program PHY_DQS_TIMING_REG */
+ value = (CP_USE_EXT_LPBK_DQS(combo_phy_reg->cp_use_ext_lpbk_dqs)) |
+ (CP_USE_LPBK_DQS(combo_phy_reg->cp_use_lpbk_dqs)) |
+ (CP_USE_PHONY_DQS(combo_phy_reg->cp_use_phony_dqs)) |
+ (CP_USE_PHONY_DQS_CMD(combo_phy_reg->cp_use_phony_dqs_cmd));
+ ret = cdns_sdmmc_write_phy_reg(MMC_REG_BASE + SDHC_CDNS_HRS04,
+ COMBO_PHY_REG + PHY_DQS_TIMING_REG, MMC_REG_BASE +
+ SDHC_CDNS_HRS05, value);
+ if (ret != 0) {
+ return ret;
+ }
+
+ /* program PHY_GATE_LPBK_CTRL_REG */
+ value = (CP_SYNC_METHOD(combo_phy_reg->cp_sync_method)) |
+ (CP_SW_HALF_CYCLE_SHIFT(combo_phy_reg->cp_sw_half_cycle_shift)) |
+ (CP_RD_DEL_SEL(combo_phy_reg->cp_rd_del_sel)) |
+ (CP_UNDERRUN_SUPPRESS(combo_phy_reg->cp_underrun_suppress)) |
+ (CP_GATE_CFG_ALWAYS_ON(combo_phy_reg->cp_gate_cfg_always_on));
+ ret = cdns_sdmmc_write_phy_reg(MMC_REG_BASE + SDHC_CDNS_HRS04,
+ COMBO_PHY_REG + PHY_GATE_LPBK_CTRL_REG, MMC_REG_BASE +
+ SDHC_CDNS_HRS05, value);
+ if (ret != 0) {
+ return ret;
+ }
+
+ /* program PHY_DLL_MASTER_CTRL_REG */
+ value = (CP_DLL_BYPASS_MODE(combo_phy_reg->cp_dll_bypass_mode))
+ | (CP_DLL_START_POINT(combo_phy_reg->cp_dll_start_point));
+ ret = cdns_sdmmc_write_phy_reg(MMC_REG_BASE + SDHC_CDNS_HRS04,
+ COMBO_PHY_REG + PHY_DLL_MASTER_CTRL_REG, MMC_REG_BASE
+ + SDHC_CDNS_HRS05, value);
+ if (ret != 0) {
+ return ret;
+ }
+
+ /* program PHY_DLL_SLAVE_CTRL_REG */
+ value = (CP_READ_DQS_CMD_DELAY(combo_phy_reg->cp_read_dqs_cmd_delay))
+ | (CP_CLK_WRDQS_DELAY(combo_phy_reg->cp_clk_wrdqs_delay))
+ | (CP_CLK_WR_DELAY(combo_phy_reg->cp_clk_wr_delay))
+ | (CP_READ_DQS_DELAY(combo_phy_reg->cp_read_dqs_delay));
+ ret = cdns_sdmmc_write_phy_reg(MMC_REG_BASE + SDHC_CDNS_HRS04,
+ COMBO_PHY_REG + PHY_DLL_SLAVE_CTRL_REG, MMC_REG_BASE
+ + SDHC_CDNS_HRS05, value);
+ if (ret != 0) {
+ return ret;
+ }
+
+ /* program PHY_CTRL_REG */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS04, COMBO_PHY_REG
+ + PHY_CTRL_REG);
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS05);
+
+ /* phony_dqs_timing=0 */
+ value &= ~(CP_PHONY_DQS_TIMING_MASK << CP_PHONY_DQS_TIMING_SHIFT);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS05, value);
+
+ /* switch off DLL_RESET */
+ do {
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09);
+ value |= SDHC_PHY_SW_RESET;
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, value);
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09);
+ /* polling PHY_INIT_COMPLETE */
+ } while ((value & SDHC_PHY_INIT_COMPLETE) != SDHC_PHY_INIT_COMPLETE);
+
+ /* program PHY_DQ_TIMING_REG */
+ combo_phy_reg->cp_io_mask_end = 0U;
+ value = (CP_IO_MASK_ALWAYS_ON(combo_phy_reg->cp_io_mask_always_on))
+ | (CP_IO_MASK_END(combo_phy_reg->cp_io_mask_end))
+ | (CP_IO_MASK_START(combo_phy_reg->cp_io_mask_start))
+ | (CP_DATA_SELECT_OE_END(combo_phy_reg->cp_data_select_oe_end));
+
+ ret = cdns_sdmmc_write_phy_reg(MMC_REG_BASE + SDHC_CDNS_HRS04,
+ COMBO_PHY_REG + PHY_DQ_TIMING_REG, MMC_REG_BASE
+ + SDHC_CDNS_HRS05, value);
+ if (ret != 0) {
+ return ret;
+ }
+ return 0;
+}
+
+int cdns_read(int lba, uintptr_t buf, size_t size)
+{
+ inv_dcache_range(buf, size);
+
+ return 0;
+}
+
+void cdns_init(void)
+{
+ /* Dummy function pointer for cdns_init. */
+}
+
+int cdns_prepare(int dma_start_addr, uintptr_t dma_buff, size_t size)
+{
+ data_cmd = true;
+ struct cdns_idmac_desc *desc;
+ uint32_t desc_cnt, i;
+ uint64_t desc_base;
+
+ assert(((dma_buff & CDNSMMC_ADDRESS_MASK) == 0) &&
+ (cdns_params.desc_size > 0) &&
+ ((MMC_REG_BASE & MMC_BLOCK_MASK) == 0) &&
+ ((cdns_params.desc_base & MMC_BLOCK_MASK) == 0) &&
+ ((cdns_params.desc_size & MMC_BLOCK_MASK) == 0));
+
+ flush_dcache_range(dma_buff, size);
+
+ desc_cnt = (size + (CDMMC_DMA_MAX_BUFFER_SIZE) - 1) / (CDMMC_DMA_MAX_BUFFER_SIZE);
+ assert(desc_cnt * sizeof(struct cdns_idmac_desc) < cdns_params.desc_size);
+
+ if (desc_cnt > CONFIG_CDNS_DESC_COUNT) {
+ ERROR("Requested data transfer length %ld is greater than configured length %d",
+ size, (CONFIG_CDNS_DESC_COUNT * CDMMC_DMA_MAX_BUFFER_SIZE));
+ return -EINVAL;
+ }
+
+ desc = (struct cdns_idmac_desc *)cdns_params.desc_base;
+ desc_base = (uint64_t)desc;
+ i = 0;
+
+ while ((i + 1) < desc_cnt) {
+ desc->attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA;
+ desc->reserved = 0;
+ desc->len = MAX_64KB_PAGE;
+ desc->addr_lo = (dma_buff & UINT_MAX) + (CDMMC_DMA_MAX_BUFFER_SIZE * i);
+#if CONFIG_DMA_ADDR_T_64BIT == 1
+ desc->addr_hi = (dma_buff >> 32) & 0xffffffff;
+#endif
+ size -= CDMMC_DMA_MAX_BUFFER_SIZE;
+ desc++;
+ i++;
+ }
+
+ desc->attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA |
+ ADMA_DESC_ATTR_END;
+ desc->reserved = 0;
+ desc->len = size;
+#if CONFIG_DMA_ADDR_T_64BIT == 1
+ desc->addr_lo = (dma_buff & UINT_MAX) + (CDMMC_DMA_MAX_BUFFER_SIZE * i);
+ desc->addr_hi = (dma_buff >> 32) & UINT_MAX;
+#else
+ desc->addr_lo = (dma_buff & UINT_MAX);
+#endif
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS22, (uint32_t)desc_base);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS23, (uint32_t)(desc_base >> 32));
+ flush_dcache_range(cdns_params.desc_base,
+ desc_cnt * CDMMC_DMA_MAX_BUFFER_SIZE);
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS01,
+ ((512 << BLOCK_SIZE) | ((size/512) << BLK_COUNT_CT) | SDMA_BUF));
+ return 0;
+}
+
+static void cdns_host_set_clk(int clk)
+{
+ uint32_t ret = 0;
+ uint32_t sdclkfsval = 0;
+ uint32_t dtcvval = DTCVVAL_DEFAULT_VAL;
+
+ sdclkfsval = (cdns_params.clk_rate / 2000) / clk;
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, 0);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, (dtcvval << SDMMC_CDN_DTCV) |
+ (sdclkfsval << SDMMC_CDN_SDCLKFS) | (1 << SDMMC_CDN_ICE));
+
+ ret = cdns_wait_ics(5000, MMC_REG_BASE + SDHC_CDNS_SRS11);
+ if (ret != 0U) {
+ ERROR("Waiting SDMMC_CDN_ICS timeout");
+ }
+
+ /* Enable DLL reset */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09) &
+ ~SDHC_DLL_RESET_MASK);
+ /* Set extended_wr_mode */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, (mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09)
+ & SDHC_EXTENDED_WR_MODE_MASK) | (1 << EXTENDED_WR_MODE));
+ /* Release DLL reset */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, mmio_read_32(MMC_REG_BASE
+ + SDHC_CDNS_HRS09) | 1);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, mmio_read_32(MMC_REG_BASE
+ + SDHC_CDNS_HRS09) | (3 << RDCMD_EN));
+
+ do {
+ mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09);
+ } while (~mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09) & (1 << 1));
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, (dtcvval << SDMMC_CDN_DTCV) |
+ (sdclkfsval << SDMMC_CDN_SDCLKFS) | (1 << SDMMC_CDN_ICE) | (1 << SDMMC_CDN_SDCE));
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS13, UINT_MAX);
+}
+
+int cdns_set_ios(unsigned int clk, unsigned int width)
+{
+
+ switch (width) {
+ case MMC_BUS_WIDTH_1:
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), LEDC_OFF);
+ break;
+ case MMC_BUS_WIDTH_4:
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), DTW_4BIT);
+ break;
+ case MMC_BUS_WIDTH_8:
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_SRS10), EDTW_8BIT);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ cdns_host_set_clk(clk);
+
+ return 0;
+}
+
+int cdns_sdmmc_write_sd_host_reg(uint32_t addr, uint32_t data)
+{
+ uint32_t value = 0;
+
+ value = mmio_read_32(addr);
+ value &= ~SDHC_REG_MASK;
+ value |= data;
+ mmio_write_32(addr, value);
+ value = mmio_read_32(addr);
+ if (value != data) {
+ ERROR("SD host address is not set properly\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+int cdns_write(int lba, uintptr_t buf, size_t size)
+{
+ return 0;
+}
+
+static int cdns_init_hrs_io(struct cdns_sdmmc_combo_phy *combo_phy_reg,
+ struct cdns_sdmmc_sdhc *sdhc_reg)
+{
+ uint32_t value = 0;
+ int ret = 0;
+
+ /* program HRS09, register 42 */
+ value = (SDHC_RDDATA_EN(sdhc_reg->sdhc_rddata_en))
+ | (SDHC_RDCMD_EN(sdhc_reg->sdhc_rdcmd_en))
+ | (SDHC_EXTENDED_WR_MODE(sdhc_reg->sdhc_extended_wr_mode))
+ | (SDHC_EXTENDED_RD_MODE(sdhc_reg->sdhc_extended_rd_mode));
+ ret = cdns_sdmmc_write_sd_host_reg(MMC_REG_BASE + SDHC_CDNS_HRS09, value);
+ if (ret != 0) {
+ ERROR("Program HRS09 failed");
+ return ret;
+ }
+
+ /* program HRS10, register 43 */
+ value = (SDHC_HCSDCLKADJ(sdhc_reg->sdhc_hcsdclkadj));
+ ret = cdns_sdmmc_write_sd_host_reg(MMC_REG_BASE + SDHC_CDNS_HRS10, value);
+ if (ret != 0) {
+ ERROR("Program HRS10 failed");
+ return ret;
+ }
+
+ /* program HRS16, register 48 */
+ value = (SDHC_WRDATA1_SDCLK_DLY(sdhc_reg->sdhc_wrdata1_sdclk_dly))
+ | (SDHC_WRDATA0_SDCLK_DLY(sdhc_reg->sdhc_wrdata0_sdclk_dly))
+ | (SDHC_WRCMD1_SDCLK_DLY(sdhc_reg->sdhc_wrcmd1_sdclk_dly))
+ | (SDHC_WRCMD0_SDCLK_DLY(sdhc_reg->sdhc_wrcmd0_sdclk_dly))
+ | (SDHC_WRDATA1_DLY(sdhc_reg->sdhc_wrdata1_dly))
+ | (SDHC_WRDATA0_DLY(sdhc_reg->sdhc_wrdata0_dly))
+ | (SDHC_WRCMD1_DLY(sdhc_reg->sdhc_wrcmd1_dly))
+ | (SDHC_WRCMD0_DLY(sdhc_reg->sdhc_wrcmd0_dly));
+ ret = cdns_sdmmc_write_sd_host_reg(MMC_REG_BASE + SDHC_CDNS_HRS16, value);
+ if (ret != 0) {
+ ERROR("Program HRS16 failed");
+ return ret;
+ }
+
+ /* program HRS07, register 40 */
+ value = (SDHC_RW_COMPENSATE(sdhc_reg->sdhc_rw_compensate))
+ | (SDHC_IDELAY_VAL(sdhc_reg->sdhc_idelay_val));
+ ret = cdns_sdmmc_write_sd_host_reg(MMC_REG_BASE + SDHC_CDNS_HRS07, value);
+ if (ret != 0) {
+ ERROR("Program HRS07 failed");
+ return ret;
+ }
+
+ return ret;
+}
+
+static int cdns_hc_set_clk(struct cdns_sdmmc_params *cdn_sdmmc_dev_mode_params)
+{
+ uint32_t ret = 0;
+ uint32_t dtcvval, sdclkfsval;
+
+ dtcvval = DTC_VAL;
+ sdclkfsval = 0;
+
+ if ((cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_DS) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_UHS_SDR12) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_SDR_BC)) {
+ sdclkfsval = 4;
+ } else if ((cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_HS) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_UHS_SDR25) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_UHS_DDR50) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_SDR)) {
+ sdclkfsval = 2;
+ } else if ((cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_UHS_SDR50) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_DDR) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_HS400) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_HS400es)) {
+ sdclkfsval = 1;
+ } else if ((cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == SD_UHS_SDR104) ||
+ (cdn_sdmmc_dev_mode_params->cdn_sdmmc_dev_mode == EMMC_HS200)) {
+ sdclkfsval = 0;
+ }
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, 0);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, (dtcvval << SDMMC_CDN_DTCV) |
+ (sdclkfsval << SDMMC_CDN_SDCLKFS) | (1 << SDMMC_CDN_ICE));
+ ret = cdns_wait_ics(5000, MMC_REG_BASE + SDHC_CDNS_SRS11);
+ if (ret != 0U) {
+ ERROR("Waiting SDMMC_CDN_ICS timeout");
+ return ret;
+ }
+
+ /* Enable DLL reset */
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_HRS09), mmio_read_32(MMC_REG_BASE
+ + SDHC_CDNS_HRS09) & ~SDHC_DLL_RESET_MASK);
+ /* Set extended_wr_mode */
+ mmio_write_32((MMC_REG_BASE + SDHC_CDNS_HRS09),
+ (mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09) & SDHC_EXTENDED_WR_MODE_MASK) |
+ (1 << EXTENDED_WR_MODE));
+ /* Release DLL reset */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, mmio_read_32(MMC_REG_BASE
+ + SDHC_CDNS_HRS09) | 1);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, mmio_read_32(MMC_REG_BASE
+ + SDHC_CDNS_HRS09) | (3 << RDCMD_EN));
+ do {
+ mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09);
+ } while (~mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09) & (1 << 1));
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, (dtcvval << SDMMC_CDN_DTCV) |
+ (sdclkfsval << SDMMC_CDN_SDCLKFS) | (1 << SDMMC_CDN_ICE) | (1 << SDMMC_CDN_SDCE));
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS13, UINT_MAX);
+ return 0;
+}
+
+int cdns_reset(void)
+{
+ uint32_t data = 0;
+ uint32_t count = 0;
+ uint32_t value = 0;
+
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS11);
+ value &= ~(0xFFFF);
+ value |= 0x0;
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, value);
+ udelay(500);
+
+ /* Software reset */
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS00, 1);
+ /* Wait status command response ready */
+ do {
+ data = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS00);
+ count++;
+ if (count >= 5000) {
+ return -ETIMEDOUT;
+ }
+ /* Wait for HRS00.SWR */
+ } while ((data & 1) == 1);
+
+ /* Step 1, switch on DLL_RESET */
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_HRS09);
+ value &= ~SDHC_PHY_SW_RESET;
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_HRS09, value);
+
+ return 0;
+}
+
+int cdns_sd_host_init(struct cdns_sdmmc_combo_phy *mmc_combo_phy_reg,
+struct cdns_sdmmc_sdhc *mmc_sdhc_reg)
+{
+ int ret = 0;
+
+ ret = cdns_reset();
+ if (ret != 0) {
+ ERROR("Program phy reg init failed");
+ return ret;
+ }
+
+ ret = cdns_program_phy_reg(&sdmmc_combo_phy_reg, &sdmmc_sdhc_reg);
+ if (ret != 0) {
+ ERROR("Program phy reg init failed");
+ return ret;
+ }
+
+ ret = cdns_init_hrs_io(&sdmmc_combo_phy_reg, &sdmmc_sdhc_reg);
+ if (ret != 0) {
+ ERROR("Program init for HRS reg is failed");
+ return ret;
+ }
+
+ ret = cdns_sd_card_detect();
+ if (ret != 0) {
+ ERROR("SD card does not detect");
+ return ret;
+ }
+
+ ret = cdns_vol_reset();
+ if (ret != 0) {
+ ERROR("eMMC card reset failed");
+ return ret;
+ }
+
+ ret = cdns_hc_set_clk(&cdns_params);
+ if (ret != 0) {
+ ERROR("hc set clk failed");
+ return ret;
+ }
+
+ return 0;
+}
+
+void cdns_srs10_value_toggle(uint8_t write_val, uint8_t prev_val)
+{
+ uint32_t data_op = 0U;
+
+ data_op = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS10);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS10, (data_op & (prev_val << 0)));
+ mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS10);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS10, data_op | (write_val << 0));
+}
+
+void cdns_srs11_srs15_config(uint32_t srs11_val, uint32_t srs15_val)
+{
+ uint32_t data = 0U;
+
+ data = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS11);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS11, (data | srs11_val));
+ data = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS15);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS15, (data | srs15_val));
+}
+
+int cdns_send_cmd(struct mmc_cmd *cmd)
+{
+ uint32_t op = 0, ret = 0;
+ uint8_t write_value = 0, prev_val = 0;
+ uint32_t value;
+ int32_t timeout;
+ uint32_t cmd_indx;
+ uint32_t status = 0, srs15_val = 0, srs11_val = 0;
+ uint32_t status_check = 0;
+
+ assert(cmd);
+ cmd_indx = (cmd->cmd_idx) << COM_IDX;
+
+ if (data_cmd) {
+ switch (cmd->cmd_idx) {
+ case SD_SWITCH:
+ op = DATA_PRESENT;
+ write_value = ADMA2_32 | DT_WIDTH;
+ prev_val = ADMA2_32 | DT_WIDTH;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ srs15_val = BIT_AD_64 | HV4E | V18SE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ case SD_WRITE_SINGLE_BLOCK:
+ case SD_READ_SINGLE_BLOCK:
+ op = DATA_PRESENT;
+ write_value = ADMA2_32 | HS_EN | DT_WIDTH | LEDC;
+ prev_val = ADMA2_32 | HS_EN | DT_WIDTH;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = PVE | BIT_AD_64 | HV4E | SDR104_MODE | V18SE;
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS00, SAAR);
+ break;
+
+ case SD_WRITE_MULTIPLE_BLOCK:
+ case SD_READ_MULTIPLE_BLOCK:
+ op = DATA_PRESENT | AUTO_CMD_EN | MULTI_BLK_READ;
+ write_value = ADMA2_32 | HS_EN | DT_WIDTH | LEDC;
+ prev_val = ADMA2_32 | HS_EN | DT_WIDTH;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = PVE | BIT_AD_64 | HV4E | SDR104_MODE | V18SE;
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS00, SAAR);
+ break;
+
+ case SD_APP_SEND_SCR:
+ op = DATA_PRESENT;
+ write_value = ADMA2_32 | LEDC;
+ prev_val = LEDC;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = BIT_AD_64 | HV4E | V18SE;
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ case SD_SEND_IF_COND:
+ op = DATA_PRESENT | CMD_IDX_CHK_ENABLE;
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = HV4E;
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ default:
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ op = 0;
+ break;
+ }
+ } else {
+ switch (cmd->cmd_idx) {
+ case SD_GO_IDLE_STATE:
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = HV4E;
+ srs11_val = SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ case SD_ALL_SEND_CID:
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = HV4E | V18SE;
+ srs11_val = SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ case SD_SEND_IF_COND:
+ op = CMD_IDX_CHK_ENABLE;
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ srs15_val = HV4E;
+ srs11_val = READ_CLK | SDMMC_CDN_ICE | SDMMC_CDN_ICS | SDMMC_CDN_SDCE;
+ cdns_srs11_srs15_config(srs11_val, srs15_val);
+ break;
+
+ case SD_STOP_TRANSMISSION:
+ op = CMD_STOP_ABORT_CMD;
+ break;
+
+ case SD_SEND_STATUS:
+ break;
+
+ case 1:
+ cmd->cmd_arg = 0;
+ break;
+
+ case SD_SELECT_CARD:
+ op = MULTI_BLK_READ;
+ break;
+
+ case SD_APP_CMD:
+ default:
+ write_value = LEDC;
+ prev_val = 0x0;
+ cdns_srs10_value_toggle(write_value, prev_val);
+ op = 0;
+ break;
+ }
+ }
+
+ switch (cmd->resp_type) {
+ case MMC_RESPONSE_NONE:
+ op |= CMD_READ | MULTI_BLK_READ | DMA_ENABLED | BLK_CNT_EN;
+ break;
+
+ case MMC_RESPONSE_R2:
+ op |= CMD_READ | MULTI_BLK_READ | DMA_ENABLED | BLK_CNT_EN |
+ RES_TYPE_SEL_136 | CMD_CHECK_RESP_CRC;
+ break;
+
+ case MMC_RESPONSE_R3:
+ op |= CMD_READ | MULTI_BLK_READ | DMA_ENABLED | BLK_CNT_EN |
+ RES_TYPE_SEL_48;
+ break;
+
+ case MMC_RESPONSE_R1:
+ if ((cmd->cmd_idx == SD_WRITE_SINGLE_BLOCK) || (cmd->cmd_idx
+ == SD_WRITE_MULTIPLE_BLOCK)) {
+ op |= DMA_ENABLED | BLK_CNT_EN | RES_TYPE_SEL_48
+ | CMD_CHECK_RESP_CRC | CMD_IDX_CHK_ENABLE;
+ } else {
+ op |= DMA_ENABLED | BLK_CNT_EN | CMD_READ | RES_TYPE_SEL_48
+ | CMD_CHECK_RESP_CRC | CMD_IDX_CHK_ENABLE;
+ }
+ break;
+
+ default:
+ op |= DMA_ENABLED | BLK_CNT_EN | CMD_READ | MULTI_BLK_READ |
+ RES_TYPE_SEL_48 | CMD_CHECK_RESP_CRC | CMD_IDX_CHK_ENABLE;
+ break;
+ }
+
+ timeout = TIMEOUT;
+ do {
+ udelay(100);
+ ret = cdns_busy();
+ if (--timeout <= 0) {
+ udelay(50);
+ panic();
+ }
+ } while (ret);
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS12, UINT_MAX);
+
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS02, cmd->cmd_arg);
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS14, 0x00000000);
+ if (cmd_indx == 1)
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS03, SDHC_CDNS_SRS03_VALUE);
+ else
+ mmio_write_32(MMC_REG_BASE + SDHC_CDNS_SRS03, op | cmd_indx);
+
+ timeout = TIMEOUT;
+ do {
+ udelay(500);
+ value = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS12);
+ } while (((value & (INT_CMD_DONE | ERROR_INT)) == 0) && (timeout-- > 0));
+
+ timeout = TIMEOUT;
+
+ if (data_cmd) {
+ data_cmd = false;
+ do {
+ udelay(250);
+ } while (((value & TRAN_COMP) == 0) && (timeout-- > 0));
+ }
+
+ status_check = value & SRS12_ERR_MASK;
+ if (status_check != 0U) {
+ ERROR("SD host controller send command failed, SRS12 = %x", status);
+ return -1;
+ }
+
+ if ((op & RES_TYPE_SEL_48) || (op & RES_TYPE_SEL_136)) {
+ cmd->resp_data[0] = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS04);
+ if (op & RES_TYPE_SEL_136) {
+ cmd->resp_data[1] = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS05);
+ cmd->resp_data[2] = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS06);
+ cmd->resp_data[3] = mmio_read_32(MMC_REG_BASE + SDHC_CDNS_SRS07);
+ }
+ }
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 17:01:21 +0000