412 lines
14 KiB
C
412 lines
14 KiB
C
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/*
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* Copyright (c) 2006-2024 RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2024-08-16 zhujiale first version
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*/
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#ifndef __SDHCI_MMC_H__
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#define __SDHCI_MMC_H__
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#include <rtthread.h>
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#include <drivers/mmcsd_cmd.h>
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#include <drivers/dev_mmcsd_core.h>
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#include <drivers/mmcsd_host.h>
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#include "sdhci_dma.h"
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#define mmc_dev(x) ((x)->parent)
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#define MMC_SEND_TUNING_BLOCK_HS200 SEND_TUNING_BLOCK_HS200
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#define MMC_SEND_TUNING_BLOCK SEND_TUNING_BLOCK
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#define MMC_STOP_TRANSMISSION STOP_TRANSMISSION
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#define MMC_BUS_TEST_R 14 /* adtc R1 */
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#define MMC_WRITE_MULTIPLE_BLOCK WRITE_MULTIPLE_BLOCK
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#define MMC_READ_MULTIPLE_BLOCK READ_MULTIPLE_BLOCK
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#define MMC_TIMING_UHS_DDR50 MMCSD_TIMING_UHS_DDR50
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#define MMC_TIMING_UHS_SDR50 MMCSD_TIMING_UHS_SDR50
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#define MMC_TIMING_MMC_HS200 MMCSD_TIMING_MMC_HS200
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#define MMC_TIMING_MMC_HS400 MMCSD_TIMING_MMC_HS400
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#define MMC_TIMING_UHS_SDR104 MMCSD_TIMING_UHS_SDR104
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#define MMC_TIMING_UHS_SDR25 MMCSD_TIMING_UHS_SDR25
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#define MMC_TIMING_MMC_DDR52 MMCSD_TIMING_MMC_DDR52
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#define MMC_TIMING_UHS_SDR12 MMCSD_TIMING_UHS_SDR12
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#define MMC_TIMING_SD_HS MMCSD_TIMING_SD_HS
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#define MMC_TIMING_MMC_HS MMCSD_TIMING_MMC_HS
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#define MMC_POWER_OFF MMCSD_POWER_OFF
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#define MMC_POWER_UP MMCSD_POWER_UP
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#define MMC_POWER_ON MMCSD_POWER_ON
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#define MMC_POWER_UNDEFINED 3
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#define MMC_SET_DRIVER_TYPE_B 0
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#define MMC_SET_DRIVER_TYPE_A 1
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#define MMC_SET_DRIVER_TYPE_C 2
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#define MMC_SET_DRIVER_TYPE_D 3
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#define MMC_SIGNAL_VOLTAGE_330 0
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#define MMC_SIGNAL_VOLTAGE_180 1
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#define MMC_SIGNAL_VOLTAGE_120 2
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#define MMC_RSP_PRESENT (1 << 16)
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#define MMC_RSP_136 (1 << 17) /* 136 bit response */
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#define MMC_RSP_CRC (1 << 18) /* expect valid crc */
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#define MMC_RSP_BUSY (1 << 19) /* card may send busy */
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#define MMC_RSP_OPCODE (1 << 20) /* response contains opcode */
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/*
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* These are the native response types, and correspond to valid bit
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* patterns of the above flags. One additional valid pattern
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* is all zeros, which means we don't expect a response.
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*/
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#define MMC_RSP_NONE (0)
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#define MMC_RSP_R1 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
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#define MMC_RSP_R1B (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE | MMC_RSP_BUSY)
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#define MMC_RSP_R2 (MMC_RSP_PRESENT | MMC_RSP_136 | MMC_RSP_CRC)
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#define MMC_RSP_R3 (MMC_RSP_PRESENT)
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#define MMC_RSP_R4 (MMC_RSP_PRESENT)
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#define MMC_RSP_R5 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
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#define MMC_RSP_R6 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
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#define MMC_RSP_R7 (MMC_RSP_PRESENT | MMC_RSP_CRC | MMC_RSP_OPCODE)
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#define MMC_CMD_ADTC CMD_ADTC
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#define MMC_BUS_WIDTH_8 MMCSD_BUS_WIDTH_8
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#define MMC_BUS_WIDTH_4 MMCSD_BUS_WIDTH_4
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#define MMC_BUS_WIDTH_1 MMCSD_BUS_WIDTH_1
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#define MMC_PM_KEEP_POWER (1 << 0) /* preserve card power during suspend */
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#define MMC_PM_WAKE_SDIO_IRQ (1 << 1) /* wake up host system on SDIO IRQ assertion */
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enum mmc_blk_status
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{
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MMC_BLK_SUCCESS = 0,
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MMC_BLK_PARTIAL,
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MMC_BLK_CMD_ERR,
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MMC_BLK_RETRY,
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MMC_BLK_ABORT,
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MMC_BLK_DATA_ERR,
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MMC_BLK_ECC_ERR,
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MMC_BLK_NOMEDIUM,
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MMC_BLK_NEW_REQUEST,
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};
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/************************************************************************************************ */
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#define MMC_NUM_CLK_PHASES (MMC_TIMING_MMC_HS400 + 1)
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struct mmc_host;
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struct mmc_host_ops
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{
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/*
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* It is optional for the host to implement pre_req and post_req in
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* order to support double buffering of requests (prepare one
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* request while another request is active).
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* pre_req() must always be followed by a post_req().
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* To undo a call made to pre_req(), call post_req() with
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* a nonzero err condition.
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*/
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void (*post_req)(struct mmc_host *host, struct rt_mmcsd_req *req,
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int err);
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void (*pre_req)(struct mmc_host *host, struct rt_mmcsd_req *req);
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void (*request)(struct mmc_host *host, struct rt_mmcsd_req *req);
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/*
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* Avoid calling the next three functions too often or in a "fast
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* path", since underlaying controller might implement them in an
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* expensive and/or slow way. Also note that these functions might
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* sleep, so don't call them in the atomic contexts!
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*/
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/*
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* Notes to the set_ios callback:
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* ios->clock might be 0. For some controllers, setting 0Hz
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* as any other frequency works. However, some controllers
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* explicitly need to disable the clock. Otherwise e.g. voltage
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* switching might fail because the SDCLK is not really quiet.
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*/
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void (*set_ios)(struct mmc_host *host, struct rt_mmcsd_io_cfg *ios);
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/*
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* Return values for the get_ro callback should be:
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* 0 for a read/write card
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* 1 for a read-only card
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* -ENOSYS when not supported (equal to NULL callback)
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* or a negative errno value when something bad happened
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*/
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int (*get_ro)(struct mmc_host *host);
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/*
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* Return values for the get_cd callback should be:
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* 0 for a absent card
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* 1 for a present card
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* -ENOSYS when not supported (equal to NULL callback)
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* or a negative errno value when something bad happened
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*/
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int (*get_cd)(struct mmc_host *host);
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void (*enable_sdio_irq)(struct mmc_host *host, int enable);
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/* Mandatory callback when using MMC_CAP2_SDIO_IRQ_NOTHREAD. */
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void (*ack_sdio_irq)(struct mmc_host *host);
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int (*start_signal_voltage_switch)(struct mmc_host *host, struct rt_mmcsd_io_cfg *ios);
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/* Check if the card is pulling dat[0:3] low */
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int (*card_busy)(struct mmc_host *host);
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/* The tuning command opcode value is different for SD and eMMC cards */
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int (*execute_tuning)(struct mmc_host *host, unsigned opcode);
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/* Prepare HS400 target operating frequency depending host driver */
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int (*prepare_hs400_tuning)(struct mmc_host *host, struct rt_mmcsd_io_cfg *ios);
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/* Prepare switch to DDR during the HS400 init sequence */
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int (*hs400_prepare_ddr)(struct mmc_host *host);
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/* Prepare for switching from HS400 to HS200 */
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void (*hs400_downgrade)(struct mmc_host *host);
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/* Complete selection of HS400 */
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void (*hs400_complete)(struct mmc_host *host);
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/* Prepare enhanced strobe depending host driver */
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void (*hs400_enhanced_strobe)(struct mmc_host *host,
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struct rt_mmcsd_io_cfg *ios);
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/* Reset the eMMC card via RST_n */
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void (*hw_reset)(struct mmc_host *host);
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void (*card_event)(struct mmc_host *host);
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};
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struct regulator;
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struct mmc_pwrseq;
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struct mmc_supply
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{
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struct regulator *vmmc; /* Card power supply */
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struct regulator *vqmmc; /* Optional Vccq supply */
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};
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struct mmc_ctx
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{
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struct task_struct *task;
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};
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/* VDD voltage 3.3 ~ 3.4 */
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
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#define MMC_CAP2_HS200_1_8V_SDR MMCSD_SUP_HS200_1V8
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#define MMC_CAP_4_BIT_DATA MMCSD_BUSWIDTH_4
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#define MMC_CAP_8_BIT_DATA MMCSD_BUSWIDTH_8
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#define MMC_CAP2_HS200 MMCSD_SUP_HS200
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#define MMC_CAP_MMC_HIGHSPEED MMCSD_SUP_HIGHSPEED
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#define MMC_CAP_SD_HIGHSPEED MMCSD_SUP_HIGHSPEED
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#define MMC_CAP_1_8V_DDR MMCSD_SUP_DDR_1V8
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#define MMC_CAP_3_3V_DDR MMCSD_SUP_DDR_3V3
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#define MMC_CAP_1_2V_DDR MMCSD_SUP_DDR_1V2
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#define MMC_CAP_NONREMOVABLE MMCSD_SUP_NONREMOVABLE
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#define MMC_CAP_UHS_DDR50 0
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#define MMC_CAP2_HS400 0
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#define MMC_CAP_UHS_SDR50 0
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#define MMC_CAP_UHS_SDR25 0
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#define MMC_CAP_UHS_SDR12 0
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#define MMC_CAP_UHS_SDR104 0
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#define MMC_CAP_UHS 0
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#define MMC_CAP2_HSX00_1_8V 0
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#define MMC_CAP2_HS400_ES 0
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#define MMC_CAP_NEEDS_POLL 0
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#define MMC_CAP2_HSX00_1_2V 0
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#define MMC_CAP2_HS400_1_8V 0
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#define MMC_CAP_DRIVER_TYPE_D 0
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#define MMC_CAP_DRIVER_TYPE_C 0
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#define MMC_SET_DRIVER_TYPE_B 0
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#define MMC_CAP_DRIVER_TYPE_A 0
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#define MMC_CAP2_SDIO_IRQ_NOTHREAD 0
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#define MMC_CAP_CMD23 0
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#define MMC_CAP_SDIO_IRQ 0
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#define MMC_CAP2_NO_SDIO (1 << 19)
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#define MMC_CAP2_NO_SD (1 << 21)
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#define MMC_CAP2_NO_MMC (1 << 22)
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#define MMC_CAP2_CQE (1 << 23)
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#define MMC_VDD_165_195 VDD_165_195
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#define MMC_VDD_20_21 VDD_20_21
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#define MMC_VDD_29_30 VDD_29_30
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#define MMC_VDD_30_31 VDD_30_31
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#define MMC_VDD_32_33 VDD_32_33
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#define MMC_VDD_33_34 VDD_33_34
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struct mmc_host
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{
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struct rt_mmcsd_host rthost;
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struct rt_device *parent;
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int index;
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const struct mmc_host_ops *ops;
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unsigned int f_min;
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unsigned int f_max;
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unsigned int f_init;
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rt_uint32_t ocr_avail;
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rt_uint32_t ocr_avail_sdio; /* SDIO-specific OCR */
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rt_uint32_t ocr_avail_sd; /* SD-specific OCR */
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rt_uint32_t ocr_avail_mmc; /* MMC-specific OCR */
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struct wakeup_source *ws; /* Enable consume of uevents */
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rt_uint32_t max_current_330;
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rt_uint32_t max_current_300;
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rt_uint32_t max_current_180;
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rt_uint32_t caps; /* Host capabilities */
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rt_uint32_t caps2; /* More host capabilities */
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/* host specific block data */
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unsigned int max_seg_size; /* see blk_queue_max_segment_size */
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unsigned short max_segs; /* see blk_queue_max_segments */
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unsigned short unused;
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unsigned int max_req_size; /* maximum number of bytes in one req */
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unsigned int max_blk_size; /* maximum size of one mmc block */
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unsigned int max_blk_count; /* maximum number of blocks in one req */
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unsigned int max_busy_timeout; /* max busy timeout in ms */
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struct rt_mmcsd_io_cfg ios; /* current io bus settings */
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unsigned int retune_period;
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/* group bitfields together to minimize padding */
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unsigned int use_spi_crc : 1;
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unsigned int claimed : 1; /* host exclusively claimed */
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unsigned int doing_init_tune : 1; /* initial tuning in progress */
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unsigned int can_retune : 1; /* re-tuning can be used */
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unsigned int doing_retune : 1; /* re-tuning in progress */
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unsigned int retune_now : 1; /* do re-tuning at next req */
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unsigned int retune_paused : 1; /* re-tuning is temporarily disabled */
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unsigned int retune_crc_disable : 1; /* don't trigger retune upon crc */
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unsigned int can_dma_map_merge : 1; /* merging can be used */
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unsigned int vqmmc_enabled : 1; /* vqmmc regulator is enabled */
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int need_retune; /* re-tuning is needed */
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int hold_retune; /* hold off re-tuning */
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rt_bool_t trigger_card_event; /* card_event necessary */
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unsigned int sdio_irqs;
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rt_bool_t sdio_irq_pending;
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struct led_trigger *led; /* activity led */
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struct mmc_supply supply;
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/* Ongoing data transfer that allows commands during transfer */
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struct rt_mmcsd_req *ongoing_mrq;
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unsigned int actual_clock; /* Actual HC clock rate */
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rt_uint32_t pm_caps;
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unsigned long private[];
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};
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static inline int mmc_card_is_removable(struct mmc_host *host)
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{
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return !(host->caps & MMC_CAP_NONREMOVABLE);
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}
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struct device_node;
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struct mmc_host *mmc_alloc_host(int extra, struct rt_device *);
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int mmc_add_host(struct mmc_host *);
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void mmc_remove_host(struct mmc_host *);
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void mmc_free_host(struct mmc_host *);
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int mmc_of_parse(struct mmc_host *host);
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int mmc_of_parse_voltage(struct mmc_host *host, rt_uint32_t *mask);
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||
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|
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||
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static inline void *mmc_priv(struct mmc_host *host)
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||
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|
{
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||
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|
return (void *)host->private;
|
||
|
|
}
|
||
|
|
|
||
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|
||
|
|
#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
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||
|
|
|
||
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|
#define mmc_dev(x) ((x)->parent)
|
||
|
|
#define mmc_classdev(x) (&(x)->class_dev)
|
||
|
|
#define mmc_hostname(x) (x->parent->parent.name)
|
||
|
|
|
||
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|
void mmc_detect_change(struct mmc_host *, unsigned long delay);
|
||
|
|
void mmc_request_done(struct mmc_host *, struct rt_mmcsd_req *);
|
||
|
|
void mmc_command_done(struct mmc_host *host, struct rt_mmcsd_req *mrq);
|
||
|
|
|
||
|
|
void mmc_cqe_request_done(struct mmc_host *host, struct rt_mmcsd_req *mrq);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* May be called from host driver's system/runtime suspend/resume callbacks,
|
||
|
|
* to know if SDIO IRQs has been claimed.
|
||
|
|
*/
|
||
|
|
static inline rt_bool_t sdio_irq_claimed(struct mmc_host *host)
|
||
|
|
{
|
||
|
|
return host->sdio_irqs > 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
|
||
|
|
struct regulator *supply,
|
||
|
|
unsigned short vdd_bit)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mmc_regulator_get_supply(struct mmc_host *mmc);
|
||
|
|
int mmc_regulator_enable_vqmmc(struct mmc_host *mmc);
|
||
|
|
void mmc_regulator_disable_vqmmc(struct mmc_host *mmc);
|
||
|
|
|
||
|
|
void mmc_retune_timer_stop(struct mmc_host *host);
|
||
|
|
|
||
|
|
static inline void mmc_retune_needed(struct mmc_host *host)
|
||
|
|
{
|
||
|
|
if (host->can_retune)
|
||
|
|
host->need_retune = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline rt_bool_t mmc_can_retune(struct mmc_host *host)
|
||
|
|
{
|
||
|
|
return host->can_retune == 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline rt_bool_t mmc_doing_retune(struct mmc_host *host)
|
||
|
|
{
|
||
|
|
return host->doing_retune == 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline rt_bool_t mmc_doing_tune(struct mmc_host *host)
|
||
|
|
{
|
||
|
|
return host->doing_retune == 1 || host->doing_init_tune == 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int mmc_get_dma_dir(struct rt_mmcsd_data *data)
|
||
|
|
{
|
||
|
|
return data->flags & DATA_DIR_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline rt_bool_t mmc_op_multi(rt_uint32_t opcode)
|
||
|
|
{
|
||
|
|
return opcode == MMC_WRITE_MULTIPLE_BLOCK || opcode == MMC_READ_MULTIPLE_BLOCK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline rt_bool_t mmc_op_tuning(rt_uint32_t opcode)
|
||
|
|
{
|
||
|
|
return opcode == MMC_SEND_TUNING_BLOCK || opcode == MMC_SEND_TUNING_BLOCK_HS200;
|
||
|
|
}
|
||
|
|
|
||
|
|
int mmc_gpio_get_cd(struct mmc_host *host);
|
||
|
|
void mmc_detect_change(struct mmc_host *host, unsigned long delay);
|
||
|
|
int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct rt_mmcsd_io_cfg *ios);
|
||
|
|
rt_bool_t mmc_can_gpio_ro(struct mmc_host *host);
|
||
|
|
int mmc_gpio_get_ro(struct mmc_host *host);
|
||
|
|
|
||
|
|
int mmc_send_tuning(struct mmc_host *host, rt_uint32_t opcode, int *cmd_error);
|
||
|
|
int mmc_send_abort_tuning(struct mmc_host *host, rt_uint32_t opcode);
|
||
|
|
int mmc_of_parse(struct mmc_host *host);
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|