| /* |
| * linux/include/linux/mmc/host.h |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * Host driver specific definitions. |
| */ |
| #ifndef LINUX_MMC_HOST_H |
| #define LINUX_MMC_HOST_H |
| |
| #include <linux/sched.h> |
| #include <linux/device.h> |
| #include <linux/devfreq.h> |
| #include <linux/fault-inject.h> |
| #include <linux/blkdev.h> |
| #include <linux/extcon.h> |
| #include <linux/ipc_logging.h> |
| |
| #include <linux/mmc/core.h> |
| #include <linux/mmc/card.h> |
| #include <linux/mmc/pm.h> |
| #include <linux/dma-direction.h> |
| |
| #define MMC_AUTOSUSPEND_DELAY_MS 3000 |
| |
| struct mmc_ios { |
| unsigned int clock; /* clock rate */ |
| unsigned int old_rate; /* saved clock rate */ |
| unsigned long clk_ts; /* time stamp of last updated clock */ |
| unsigned short vdd; |
| unsigned int power_delay_ms; /* waiting for stable power */ |
| |
| /* vdd stores the bit number of the selected voltage range from below. */ |
| |
| unsigned char bus_mode; /* command output mode */ |
| |
| #define MMC_BUSMODE_OPENDRAIN 1 |
| #define MMC_BUSMODE_PUSHPULL 2 |
| |
| unsigned char chip_select; /* SPI chip select */ |
| |
| #define MMC_CS_DONTCARE 0 |
| #define MMC_CS_HIGH 1 |
| #define MMC_CS_LOW 2 |
| |
| unsigned char power_mode; /* power supply mode */ |
| |
| #define MMC_POWER_OFF 0 |
| #define MMC_POWER_UP 1 |
| #define MMC_POWER_ON 2 |
| #define MMC_POWER_UNDEFINED 3 |
| |
| unsigned char bus_width; /* data bus width */ |
| |
| #define MMC_BUS_WIDTH_1 0 |
| #define MMC_BUS_WIDTH_4 2 |
| #define MMC_BUS_WIDTH_8 3 |
| |
| unsigned char timing; /* timing specification used */ |
| |
| #define MMC_TIMING_LEGACY 0 |
| #define MMC_TIMING_MMC_HS 1 |
| #define MMC_TIMING_SD_HS 2 |
| #define MMC_TIMING_UHS_SDR12 3 |
| #define MMC_TIMING_UHS_SDR25 4 |
| #define MMC_TIMING_UHS_SDR50 5 |
| #define MMC_TIMING_UHS_SDR104 6 |
| #define MMC_TIMING_UHS_DDR50 7 |
| #define MMC_TIMING_MMC_DDR52 8 |
| #define MMC_TIMING_MMC_HS200 9 |
| #define MMC_TIMING_MMC_HS400 10 |
| |
| unsigned char signal_voltage; /* signalling voltage (1.8V or 3.3V) */ |
| |
| #define MMC_SIGNAL_VOLTAGE_330 0 |
| #define MMC_SIGNAL_VOLTAGE_180 1 |
| #define MMC_SIGNAL_VOLTAGE_120 2 |
| |
| unsigned char drv_type; /* driver type (A, B, C, D) */ |
| |
| #define MMC_SET_DRIVER_TYPE_B 0 |
| #define MMC_SET_DRIVER_TYPE_A 1 |
| #define MMC_SET_DRIVER_TYPE_C 2 |
| #define MMC_SET_DRIVER_TYPE_D 3 |
| |
| bool enhanced_strobe; /* hs400es selection */ |
| }; |
| |
| struct mmc_host; |
| |
| enum { |
| MMC_ERR_CMD_TIMEOUT, |
| MMC_ERR_CMD_CRC, |
| MMC_ERR_DAT_TIMEOUT, |
| MMC_ERR_DAT_CRC, |
| MMC_ERR_AUTO_CMD, |
| MMC_ERR_ADMA, |
| MMC_ERR_TUNING, |
| MMC_ERR_CMDQ_RED, |
| MMC_ERR_CMDQ_GCE, |
| MMC_ERR_CMDQ_ICCE, |
| MMC_ERR_REQ_TIMEOUT, |
| MMC_ERR_CMDQ_REQ_TIMEOUT, |
| MMC_ERR_ICE_CFG, |
| MMC_ERR_MAX, |
| }; |
| |
| /* states to represent load on the host */ |
| enum mmc_load { |
| MMC_LOAD_HIGH, |
| MMC_LOAD_LOW, |
| }; |
| |
| struct mmc_host_ops { |
| int (*init)(struct mmc_host *host); |
| /* |
| * 'enable' is called when the host is claimed and 'disable' is called |
| * when the host is released. 'enable' and 'disable' are deprecated. |
| */ |
| int (*enable)(struct mmc_host *host); |
| int (*disable)(struct mmc_host *host); |
| /* |
| * It is optional for the host to implement pre_req and post_req in |
| * order to support double buffering of requests (prepare one |
| * request while another request is active). |
| * pre_req() must always be followed by a post_req(). |
| * To undo a call made to pre_req(), call post_req() with |
| * a nonzero err condition. |
| */ |
| void (*post_req)(struct mmc_host *host, struct mmc_request *req, |
| int err); |
| void (*pre_req)(struct mmc_host *host, struct mmc_request *req); |
| void (*request)(struct mmc_host *host, struct mmc_request *req); |
| |
| /* |
| * Avoid calling the next three functions too often or in a "fast |
| * path", since underlaying controller might implement them in an |
| * expensive and/or slow way. Also note that these functions might |
| * sleep, so don't call them in the atomic contexts! |
| */ |
| |
| /* |
| * Notes to the set_ios callback: |
| * ios->clock might be 0. For some controllers, setting 0Hz |
| * as any other frequency works. However, some controllers |
| * explicitly need to disable the clock. Otherwise e.g. voltage |
| * switching might fail because the SDCLK is not really quiet. |
| */ |
| void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios); |
| |
| /* |
| * Return values for the get_ro callback should be: |
| * 0 for a read/write card |
| * 1 for a read-only card |
| * -ENOSYS when not supported (equal to NULL callback) |
| * or a negative errno value when something bad happened |
| */ |
| int (*get_ro)(struct mmc_host *host); |
| |
| /* |
| * Return values for the get_cd callback should be: |
| * 0 for a absent card |
| * 1 for a present card |
| * -ENOSYS when not supported (equal to NULL callback) |
| * or a negative errno value when something bad happened |
| */ |
| int (*get_cd)(struct mmc_host *host); |
| |
| void (*enable_sdio_irq)(struct mmc_host *host, int enable); |
| void (*ack_sdio_irq)(struct mmc_host *host); |
| |
| /* optional callback for HC quirks */ |
| void (*init_card)(struct mmc_host *host, struct mmc_card *card); |
| |
| int (*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios); |
| |
| /* Check if the card is pulling dat[0:3] low */ |
| int (*card_busy)(struct mmc_host *host); |
| |
| /* The tuning command opcode value is different for SD and eMMC cards */ |
| int (*execute_tuning)(struct mmc_host *host, u32 opcode); |
| |
| /* Prepare HS400 target operating frequency depending host driver */ |
| int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios); |
| int (*enhanced_strobe)(struct mmc_host *host); |
| |
| /* Prepare for switching from HS400 to HS200 */ |
| void (*hs400_downgrade)(struct mmc_host *host); |
| |
| /* Complete selection of HS400 */ |
| void (*hs400_complete)(struct mmc_host *host); |
| |
| /* Prepare enhanced strobe depending host driver */ |
| void (*hs400_enhanced_strobe)(struct mmc_host *host, |
| struct mmc_ios *ios); |
| int (*select_drive_strength)(struct mmc_card *card, |
| unsigned int max_dtr, int host_drv, |
| int card_drv, int *drv_type); |
| void (*hw_reset)(struct mmc_host *host); |
| void (*enter_dbg_mode)(struct mmc_host *host); |
| void (*exit_dbg_mode)(struct mmc_host *host); |
| void (*card_event)(struct mmc_host *host); |
| |
| /* |
| * Optional callback to support controllers with HW issues for multiple |
| * I/O. Returns the number of supported blocks for the request. |
| */ |
| int (*multi_io_quirk)(struct mmc_card *card, |
| unsigned int direction, int blk_size); |
| |
| unsigned long (*get_max_frequency)(struct mmc_host *host); |
| unsigned long (*get_min_frequency)(struct mmc_host *host); |
| int (*notify_load)(struct mmc_host *host, enum mmc_load); |
| |
| void (*notify_halt)(struct mmc_host *mmc, bool halt); |
| void (*force_err_irq)(struct mmc_host *host, u64 errmask); |
| }; |
| |
| struct mmc_cqe_ops { |
| /* Allocate resources, and make the CQE operational */ |
| int (*cqe_enable)(struct mmc_host *host, struct mmc_card *card); |
| /* Free resources, and make the CQE non-operational */ |
| void (*cqe_disable)(struct mmc_host *host); |
| /* |
| * Issue a read, write or DCMD request to the CQE. Also deal with the |
| * effect of ->cqe_off(). |
| */ |
| int (*cqe_request)(struct mmc_host *host, struct mmc_request *mrq); |
| /* Free resources (e.g. DMA mapping) associated with the request */ |
| void (*cqe_post_req)(struct mmc_host *host, struct mmc_request *mrq); |
| /* |
| * Prepare the CQE and host controller to accept non-CQ commands. There |
| * is no corresponding ->cqe_on(), instead ->cqe_request() is required |
| * to deal with that. |
| */ |
| void (*cqe_off)(struct mmc_host *host); |
| /* |
| * Wait for all CQE tasks to complete. Return an error if recovery |
| * becomes necessary. |
| */ |
| int (*cqe_wait_for_idle)(struct mmc_host *host); |
| /* |
| * Notify CQE that a request has timed out. Return false if the request |
| * completed or true if a timeout happened in which case indicate if |
| * recovery is needed. |
| */ |
| bool (*cqe_timeout)(struct mmc_host *host, struct mmc_request *mrq, |
| bool *recovery_needed); |
| /* |
| * Stop all CQE activity and prepare the CQE and host controller to |
| * accept recovery commands. |
| */ |
| void (*cqe_recovery_start)(struct mmc_host *host); |
| /* |
| * Clear the queue and call mmc_cqe_request_done() on all requests. |
| * Requests that errored will have the error set on the mmc_request |
| * (data->error or cmd->error for DCMD). Requests that did not error |
| * will have zero data bytes transferred. |
| */ |
| void (*cqe_recovery_finish)(struct mmc_host *host); |
| /* |
| * Update the request queue with keyslot manager details. This keyslot |
| * manager will be used by block crypto to configure the crypto Engine |
| * for data encryption. |
| */ |
| void (*cqe_crypto_update_queue)(struct mmc_host *host, |
| struct request_queue *queue); |
| }; |
| |
| struct mmc_async_req { |
| /* active mmc request */ |
| struct mmc_request *mrq; |
| /* |
| * Check error status of completed mmc request. |
| * Returns 0 if success otherwise non zero. |
| */ |
| enum mmc_blk_status (*err_check)(struct mmc_card *, struct mmc_async_req *); |
| }; |
| |
| /** |
| * struct mmc_slot - MMC slot functions |
| * |
| * @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL |
| * @handler_priv: MMC/SD-card slot context |
| * |
| * Some MMC/SD host controllers implement slot-functions like card and |
| * write-protect detection natively. However, a large number of controllers |
| * leave these functions to the CPU. This struct provides a hook to attach |
| * such slot-function drivers. |
| */ |
| struct mmc_slot { |
| int cd_irq; |
| bool cd_wake_enabled; |
| void *handler_priv; |
| }; |
| |
| /** |
| * mmc_context_info - synchronization details for mmc context |
| * @is_done_rcv wake up reason was done request |
| * @is_new_req wake up reason was new request |
| * @is_waiting_last_req mmc context waiting for single running request |
| * @wait wait queue |
| * @lock lock to protect data fields |
| */ |
| struct mmc_context_info { |
| bool is_done_rcv; |
| bool is_new_req; |
| bool is_waiting_last_req; |
| wait_queue_head_t wait; |
| spinlock_t lock; |
| }; |
| |
| struct regulator; |
| struct mmc_pwrseq; |
| |
| struct mmc_supply { |
| struct regulator *vmmc; /* Card power supply */ |
| struct regulator *vqmmc; /* Optional Vccq supply */ |
| }; |
| |
| struct mmc_ctx { |
| struct task_struct *task; |
| }; |
| |
| enum dev_state { |
| DEV_SUSPENDING = 1, |
| DEV_SUSPENDED, |
| DEV_RESUMED, |
| }; |
| |
| /** |
| * struct mmc_devfeq_clk_scaling - main context for MMC clock scaling logic |
| * |
| * @lock: spinlock to protect statistics |
| * @devfreq: struct that represent mmc-host as a client for devfreq |
| * @devfreq_profile: MMC device profile, mostly polling interval and callbacks |
| * @ondemand_gov_data: struct supplied to ondemmand governor (thresholds) |
| * @state: load state, can be HIGH or LOW. used to notify mmc_host_ops callback |
| * @start_busy: timestamped armed once a data request is started |
| * @measure_interval_start: timestamped armed once a measure interval started |
| * @devfreq_abort: flag to sync between different contexts relevant to devfreq |
| * @skip_clk_scale_freq_update: flag that enable/disable frequency change |
| * @freq_table_sz: table size of frequencies supplied to devfreq |
| * @freq_table: frequencies table supplied to devfreq |
| * @curr_freq: current frequency |
| * @polling_delay_ms: polling interval for status collection used by devfreq |
| * @upthreshold: up-threshold supplied to ondemand governor |
| * @downthreshold: down-threshold supplied to ondemand governor |
| * @need_freq_change: flag indicating if a frequency change is required |
| * @is_busy_started: flag indicating if a request is handled by the HW |
| * @enable: flag indicating if the clock scaling logic is enabled for this host |
| * @is_suspended: to make devfreq request queued when mmc is suspened |
| */ |
| struct mmc_devfeq_clk_scaling { |
| spinlock_t lock; |
| struct devfreq *devfreq; |
| struct devfreq_dev_profile devfreq_profile; |
| struct devfreq_simple_ondemand_data ondemand_gov_data; |
| enum mmc_load state; |
| ktime_t start_busy; |
| ktime_t measure_interval_start; |
| atomic_t devfreq_abort; |
| bool skip_clk_scale_freq_update; |
| int freq_table_sz; |
| int pltfm_freq_table_sz; |
| u32 *freq_table; |
| u32 *pltfm_freq_table; |
| unsigned long total_busy_time_us; |
| unsigned long target_freq; |
| unsigned long curr_freq; |
| unsigned long polling_delay_ms; |
| unsigned int upthreshold; |
| unsigned int downthreshold; |
| unsigned int lower_bus_speed_mode; |
| #define MMC_SCALING_LOWER_DDR52_MODE 1 |
| bool need_freq_change; |
| bool is_busy_started; |
| bool enable; |
| bool is_suspended; |
| }; |
| |
| struct mmc_host { |
| struct device *parent; |
| struct device class_dev; |
| struct mmc_devfeq_clk_scaling clk_scaling; |
| int index; |
| const struct mmc_host_ops *ops; |
| struct mmc_pwrseq *pwrseq; |
| unsigned int f_min; |
| unsigned int f_max; |
| unsigned int f_init; |
| u32 ocr_avail; |
| u32 ocr_avail_sdio; /* SDIO-specific OCR */ |
| u32 ocr_avail_sd; /* SD-specific OCR */ |
| u32 ocr_avail_mmc; /* MMC-specific OCR */ |
| #ifdef CONFIG_PM_SLEEP |
| struct notifier_block pm_notify; |
| #endif |
| u32 max_current_330; |
| u32 max_current_300; |
| u32 max_current_180; |
| |
| #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ |
| #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |
| #define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */ |
| #define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */ |
| #define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */ |
| #define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */ |
| #define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */ |
| #define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */ |
| #define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */ |
| #define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */ |
| #define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */ |
| #define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */ |
| #define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */ |
| #define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */ |
| #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ |
| #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ |
| #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ |
| |
| u32 caps; /* Host capabilities */ |
| |
| #define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */ |
| #define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */ |
| #define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */ |
| #define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */ |
| #define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */ |
| #define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */ |
| #define MMC_CAP_8_BIT_DATA (1 << 6) /* Can the host do 8 bit transfers */ |
| #define MMC_CAP_AGGRESSIVE_PM (1 << 7) /* Suspend (e)MMC/SD at idle */ |
| #define MMC_CAP_NONREMOVABLE (1 << 8) /* Nonremovable e.g. eMMC */ |
| #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9) /* Waits while card is busy */ |
| #define MMC_CAP_ERASE (1 << 10) /* Allow erase/trim commands */ |
| #define MMC_CAP_3_3V_DDR (1 << 11) /* Host supports eMMC DDR 3.3V */ |
| #define MMC_CAP_1_8V_DDR (1 << 12) /* Host supports eMMC DDR 1.8V */ |
| #define MMC_CAP_1_2V_DDR (1 << 13) /* Host supports eMMC DDR 1.2V */ |
| #define MMC_CAP_POWER_OFF_CARD (1 << 14) /* Can power off after boot */ |
| #define MMC_CAP_BUS_WIDTH_TEST (1 << 15) /* CMD14/CMD19 bus width ok */ |
| #define MMC_CAP_UHS_SDR12 (1 << 16) /* Host supports UHS SDR12 mode */ |
| #define MMC_CAP_UHS_SDR25 (1 << 17) /* Host supports UHS SDR25 mode */ |
| #define MMC_CAP_UHS_SDR50 (1 << 18) /* Host supports UHS SDR50 mode */ |
| #define MMC_CAP_UHS_SDR104 (1 << 19) /* Host supports UHS SDR104 mode */ |
| #define MMC_CAP_UHS_DDR50 (1 << 20) /* Host supports UHS DDR50 mode */ |
| #define MMC_CAP_UHS (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | \ |
| MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | \ |
| MMC_CAP_UHS_DDR50) |
| /* (1 << 21) is free for reuse */ |
| #define MMC_CAP_NEED_RSP_BUSY (1 << 22) /* Commands with R1B can't use R1. */ |
| #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ |
| #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ |
| #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ |
| #define MMC_CAP_DONE_COMPLETE (1 << 27) /* RW reqs can be completed within mmc_request_done() */ |
| #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ |
| #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ |
| #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ |
| #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ |
| |
| u32 caps2; /* More host capabilities */ |
| |
| #define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */ |
| #define MMC_CAP2_CRYPTO (1 << 1) /* Host supports inline encryption */ |
| #define MMC_CAP2_FULL_PWR_CYCLE (1 << 2) /* Can do full power cycle */ |
| #define MMC_CAP2_HS200_1_8V_SDR (1 << 5) /* can support */ |
| #define MMC_CAP2_HS200_1_2V_SDR (1 << 6) /* can support */ |
| #define MMC_CAP2_SLEEP_AWAKE (1 << 7) /* Use Sleep/Awake (CMD5) */ |
| /* use max discard ignoring max_busy_timeout parameter */ |
| #define MMC_CAP2_MAX_DISCARD_SIZE (1 << 8) |
| #define MMC_CAP2_HS200 (MMC_CAP2_HS200_1_8V_SDR | \ |
| MMC_CAP2_HS200_1_2V_SDR) |
| #define MMC_CAP2_CD_ACTIVE_HIGH (1 << 10) /* Card-detect signal active high */ |
| #define MMC_CAP2_RO_ACTIVE_HIGH (1 << 11) /* Write-protect signal active high */ |
| #define MMC_CAP2_PACKED_RD (1 << 12) /* Allow packed read */ |
| #define MMC_CAP2_PACKED_WR (1 << 13) /* Allow packed write */ |
| #define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \ |
| MMC_CAP2_PACKED_WR) |
| #define MMC_CAP2_NO_PRESCAN_POWERUP (1 << 14) /* Don't power up before scan */ |
| #define MMC_CAP2_HS400_1_8V (1 << 15) /* Can support HS400 1.8V */ |
| #define MMC_CAP2_HS400_1_2V (1 << 16) /* Can support HS400 1.2V */ |
| #define MMC_CAP2_HS400 (MMC_CAP2_HS400_1_8V | \ |
| MMC_CAP2_HS400_1_2V) |
| #define MMC_CAP2_HSX00_1_8V (MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V) |
| #define MMC_CAP2_HSX00_1_2V (MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V) |
| #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17) |
| #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18) /* No physical write protect pin, assume that card is always read-write */ |
| #define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */ |
| #define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */ |
| #define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */ |
| #define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */ |
| #define MMC_CAP2_CQE (1 << 23) /* Has eMMC command queue engine */ |
| #define MMC_CAP2_CQE_DCMD (1 << 24) /* CQE can issue a direct command */ |
| #define MMC_CAP2_AVOID_3_3V (1 << 25) /* Host must negotiate down from 3.3V */ |
| #define MMC_CAP2_PACKED_WR_CONTROL (1 << 26) /* Allow write packed control */ |
| #define MMC_CAP2_CLK_SCALE (1 << 27) /* Allow dynamic clk scaling */ |
| #define MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE (1 << 28) /* Allow Async SDIO irq */ |
| /* while card in 4-bit mode */ |
| #define MMC_CAP2_NONHOTPLUG (1 << 29) /*Don't support hotplug*/ |
| /* Some hosts need additional tuning */ |
| #define MMC_CAP2_HS400_POST_TUNING (1 << 30) |
| #define MMC_CAP2_SANITIZE (1 << 31) /* Support Sanitize */ |
| |
| int fixed_drv_type; /* fixed driver type for non-removable media */ |
| |
| mmc_pm_flag_t pm_caps; /* supported pm features */ |
| |
| /* host specific block data */ |
| unsigned int max_seg_size; /* see blk_queue_max_segment_size */ |
| unsigned short max_segs; /* see blk_queue_max_segments */ |
| unsigned short unused; |
| unsigned int max_req_size; /* maximum number of bytes in one req */ |
| unsigned int max_blk_size; /* maximum size of one mmc block */ |
| unsigned int max_blk_count; /* maximum number of blocks in one req */ |
| unsigned int max_busy_timeout; /* max busy timeout in ms */ |
| |
| /* private data */ |
| spinlock_t lock; /* lock for claim and bus ops */ |
| |
| struct mmc_ios ios; /* current io bus settings */ |
| struct mmc_ios cached_ios; |
| |
| /* group bitfields together to minimize padding */ |
| unsigned int use_spi_crc:1; |
| unsigned int claimed:1; /* host exclusively claimed */ |
| unsigned int bus_dead:1; /* bus has been released */ |
| unsigned int can_retune:1; /* re-tuning can be used */ |
| unsigned int doing_retune:1; /* re-tuning in progress */ |
| unsigned int retune_now:1; /* do re-tuning at next req */ |
| unsigned int retune_paused:1; /* re-tuning is temporarily disabled */ |
| unsigned int use_blk_mq:1; /* use blk-mq */ |
| unsigned int retune_crc_disable:1; /* don't trigger retune upon crc */ |
| |
| int rescan_disable; /* disable card detection */ |
| int rescan_entered; /* used with nonremovable devices */ |
| |
| int need_retune; /* re-tuning is needed */ |
| int hold_retune; /* hold off re-tuning */ |
| unsigned int retune_period; /* re-tuning period in secs */ |
| struct timer_list retune_timer; /* for periodic re-tuning */ |
| |
| bool trigger_card_event; /* card_event necessary */ |
| |
| struct mmc_card *card; /* device attached to this host */ |
| |
| wait_queue_head_t wq; |
| struct mmc_ctx *claimer; /* context that has host claimed */ |
| int claim_cnt; /* "claim" nesting count */ |
| struct mmc_ctx default_ctx; /* default context */ |
| |
| struct delayed_work detect; |
| int detect_change; /* card detect flag */ |
| struct mmc_slot slot; |
| |
| const struct mmc_bus_ops *bus_ops; /* current bus driver */ |
| unsigned int bus_refs; /* reference counter */ |
| |
| unsigned int bus_resume_flags; |
| #define MMC_BUSRESUME_MANUAL_RESUME (1 << 0) |
| #define MMC_BUSRESUME_NEEDS_RESUME (1 << 1) |
| bool ignore_bus_resume_flags; |
| |
| unsigned int sdio_irqs; |
| struct task_struct *sdio_irq_thread; |
| struct delayed_work sdio_irq_work; |
| bool sdio_irq_pending; |
| atomic_t sdio_irq_thread_abort; |
| |
| mmc_pm_flag_t pm_flags; /* requested pm features */ |
| |
| struct led_trigger *led; /* activity led */ |
| |
| #ifdef CONFIG_REGULATOR |
| bool regulator_enabled; /* regulator state */ |
| #endif |
| struct mmc_supply supply; |
| |
| struct dentry *debugfs_root; |
| |
| bool err_occurred; |
| u32 err_stats[MMC_ERR_MAX]; |
| |
| /* Ongoing data transfer that allows commands during transfer */ |
| struct mmc_request *ongoing_mrq; |
| |
| #ifdef CONFIG_FAIL_MMC_REQUEST |
| struct fault_attr fail_mmc_request; |
| #endif |
| |
| unsigned int actual_clock; /* Actual HC clock rate */ |
| |
| unsigned int slotno; /* used for sdio acpi binding */ |
| |
| int dsr_req; /* DSR value is valid */ |
| u32 dsr; /* optional driver stage (DSR) value */ |
| |
| /* Command Queue Engine (CQE) support */ |
| const struct mmc_cqe_ops *cqe_ops; |
| void *cqe_private; |
| int cqe_qdepth; |
| bool cqe_enabled; |
| bool cqe_on; |
| |
| /* |
| * Set to 1 to just stop the SDCLK to the card without |
| * actually disabling the clock from it's source. |
| */ |
| bool card_clock_off; |
| struct extcon_dev *extcon; |
| struct notifier_block card_detect_nb; |
| |
| #ifdef CONFIG_MMC_PERF_PROFILING |
| struct { |
| |
| unsigned long rbytes_drv; /* Rd bytes MMC Host */ |
| unsigned long wbytes_drv; /* Wr bytes MMC Host */ |
| ktime_t rtime_drv; /* Rd time MMC Host */ |
| ktime_t wtime_drv; /* Wr time MMC Host */ |
| ktime_t start; |
| } perf; |
| bool perf_enable; |
| #endif |
| |
| #ifdef CONFIG_MMC_IPC_LOGGING |
| void *ipc_log_ctxt; |
| bool stop_tracing; |
| #endif |
| enum dev_state dev_status; |
| bool inlinecrypt_support; /* Inline encryption support */ |
| bool inlinecrypt_reset_needed; /* Inline crypto reset */ |
| |
| bool crash_on_err; /* crash the system on error */ |
| bool need_hw_reset; |
| atomic_t active_reqs; |
| unsigned long private[0] ____cacheline_aligned; |
| }; |
| |
| struct device_node; |
| |
| struct mmc_host *mmc_alloc_host(int extra, struct device *); |
| extern bool mmc_host_may_gate_card(struct mmc_card *card); |
| int mmc_add_host(struct mmc_host *); |
| void mmc_remove_host(struct mmc_host *); |
| void mmc_free_host(struct mmc_host *); |
| int mmc_of_parse(struct mmc_host *host); |
| int mmc_of_parse_voltage(struct device_node *np, u32 *mask); |
| |
| #ifdef CONFIG_MMC_IPC_LOGGING |
| #define NUM_LOG_PAGES 10 |
| #define mmc_log_string(mmc_host, fmt, ...) do { \ |
| if ((mmc_host)->ipc_log_ctxt && !(mmc_host)->stop_tracing) \ |
| ipc_log_string((mmc_host)->ipc_log_ctxt, \ |
| "%s: " fmt, __func__, ##__VA_ARGS__); \ |
| } while (0) |
| #else |
| #define mmc_log_string(mmc_host, fmt, ...) do { } while (0) |
| #endif |
| |
| static inline void *mmc_priv(struct mmc_host *host) |
| { |
| return (void *)host->private; |
| } |
| |
| #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) |
| |
| #define mmc_dev(x) ((x)->parent) |
| #define mmc_classdev(x) (&(x)->class_dev) |
| #define mmc_hostname(x) (dev_name(&(x)->class_dev)) |
| #define mmc_bus_needs_resume(host) ((host)->bus_resume_flags & \ |
| MMC_BUSRESUME_NEEDS_RESUME) |
| #define mmc_bus_manual_resume(host) ((host)->bus_resume_flags & \ |
| MMC_BUSRESUME_MANUAL_RESUME) |
| |
| #ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME |
| static inline void mmc_set_bus_resume_policy(struct mmc_host *host, int manual) |
| { |
| if (manual) |
| host->bus_resume_flags |= MMC_BUSRESUME_MANUAL_RESUME; |
| else |
| host->bus_resume_flags &= ~MMC_BUSRESUME_MANUAL_RESUME; |
| } |
| #else |
| static inline void mmc_set_bus_resume_policy(struct mmc_host *host, int manual) |
| { |
| } |
| #endif |
| |
| extern int mmc_resume_bus(struct mmc_host *host); |
| |
| void mmc_detect_change(struct mmc_host *, unsigned long delay); |
| void mmc_request_done(struct mmc_host *, struct mmc_request *); |
| void mmc_command_done(struct mmc_host *host, struct mmc_request *mrq); |
| |
| void mmc_cqe_request_done(struct mmc_host *host, struct mmc_request *mrq); |
| |
| /* |
| * May be called from host driver's system/runtime suspend/resume callbacks, |
| * to know if SDIO IRQs has been claimed. |
| */ |
| static inline bool sdio_irq_claimed(struct mmc_host *host) |
| { |
| return host->sdio_irqs > 0; |
| } |
| |
| static inline void mmc_signal_sdio_irq(struct mmc_host *host) |
| { |
| host->ops->enable_sdio_irq(host, 0); |
| host->sdio_irq_pending = true; |
| if (host->sdio_irq_thread) |
| wake_up_process(host->sdio_irq_thread); |
| } |
| |
| void sdio_run_irqs(struct mmc_host *host); |
| void sdio_signal_irq(struct mmc_host *host); |
| |
| #ifdef CONFIG_REGULATOR |
| int mmc_regulator_get_ocrmask(struct regulator *supply); |
| int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| struct regulator *supply, |
| unsigned short vdd_bit); |
| int mmc_regulator_set_vqmmc(struct mmc_host *mmc, struct mmc_ios *ios); |
| #else |
| static inline int mmc_regulator_get_ocrmask(struct regulator *supply) |
| { |
| return 0; |
| } |
| |
| static inline int mmc_regulator_set_ocr(struct mmc_host *mmc, |
| struct regulator *supply, |
| unsigned short vdd_bit) |
| { |
| return 0; |
| } |
| |
| static inline int mmc_regulator_set_vqmmc(struct mmc_host *mmc, |
| struct mmc_ios *ios) |
| { |
| return -EINVAL; |
| } |
| #endif |
| |
| u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max); |
| int mmc_regulator_get_supply(struct mmc_host *mmc); |
| |
| static inline int mmc_card_is_removable(struct mmc_host *host) |
| { |
| return !(host->caps & MMC_CAP_NONREMOVABLE); |
| } |
| |
| static inline int mmc_card_keep_power(struct mmc_host *host) |
| { |
| return host->pm_flags & MMC_PM_KEEP_POWER; |
| } |
| |
| static inline int mmc_card_wake_sdio_irq(struct mmc_host *host) |
| { |
| return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ; |
| } |
| |
| |
| static inline bool mmc_card_and_host_support_async_int(struct mmc_host *host) |
| { |
| return ((host->caps2 & MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE) && |
| (host->card->cccr.async_intr_sup)); |
| } |
| |
| |
| static inline void mmc_host_clear_sdr104(struct mmc_host *host) |
| { |
| host->caps &= ~MMC_CAP_UHS_SDR104; |
| } |
| |
| static inline void mmc_host_set_sdr104(struct mmc_host *host) |
| { |
| host->caps |= MMC_CAP_UHS_SDR104; |
| } |
| |
| static inline int mmc_card_hs(struct mmc_card *card) |
| { |
| return card->host->ios.timing == MMC_TIMING_SD_HS || |
| card->host->ios.timing == MMC_TIMING_MMC_HS; |
| } |
| |
| /* TODO: Move to private header */ |
| static inline int mmc_card_uhs(struct mmc_card *card) |
| { |
| return card->host->ios.timing >= MMC_TIMING_UHS_SDR12 && |
| card->host->ios.timing <= MMC_TIMING_UHS_DDR50; |
| } |
| |
| void mmc_retune_enable(struct mmc_host *host); |
| void mmc_retune_disable(struct mmc_host *host); |
| 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 bool mmc_can_retune(struct mmc_host *host) |
| { |
| return host->can_retune == 1; |
| } |
| |
| static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data) |
| { |
| return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE; |
| } |
| |
| int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error); |
| int mmc_abort_tuning(struct mmc_host *host, u32 opcode); |
| |
| #endif /* LINUX_MMC_HOST_H */ |