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/*
* 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/leds.h>
#include <linux/mutex.h>
#include <linux/timer.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/mmc/core.h>
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/pm.h>
#include <linux/mmc/ring_buffer.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;
/* 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 */
};
/* states to represent load on the host */
enum mmc_load {
MMC_LOAD_HIGH,
MMC_LOAD_LOW,
};
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,
};
struct mmc_cmdq_host_ops {
int (*init)(struct mmc_host *host);
int (*enable)(struct mmc_host *host);
void (*disable)(struct mmc_host *host, bool soft);
int (*request)(struct mmc_host *host, struct mmc_request *mrq);
void (*post_req)(struct mmc_host *host, int tag, int err);
int (*halt)(struct mmc_host *host, bool halt);
void (*reset)(struct mmc_host *host, bool soft);
void (*dumpstate)(struct mmc_host *host);
};
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,
bool is_first_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);
/* 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 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 (*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 *, enum mmc_load);
void (*notify_halt)(struct mmc_host *mmc, bool halt);
void (*force_err_irq)(struct mmc_host *host, u64 errmask);
};
struct mmc_card;
struct device;
struct mmc_cmdq_req {
unsigned int cmd_flags;
u32 blk_addr;
/* active mmc request */
struct mmc_request mrq;
struct mmc_data data;
struct mmc_command cmd;
#define DCMD (1 << 0)
#define QBR (1 << 1)
#define DIR (1 << 2)
#define PRIO (1 << 3)
#define REL_WR (1 << 4)
#define DAT_TAG (1 << 5)
#define FORCED_PRG (1 << 6)
unsigned int cmdq_req_flags;
unsigned int resp_idx;
unsigned int resp_arg;
unsigned int dev_pend_tasks;
bool resp_err;
bool skip_err_handling;
int tag; /* used for command queuing */
u8 ctx_id;
};
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.
*/
int (*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;
void *handler_priv;
};
/**
* mmc_cmdq_context_info - describes the contexts of cmdq
* @active_reqs requests being processed
* @data_active_reqs data requests being processed
* @curr_state state of cmdq engine
* @cmdq_ctx_lock acquire this before accessing this structure
* @queue_empty_wq workqueue for waiting for all
* the outstanding requests to be completed
* @wait waiting for all conditions described in
* mmc_cmdq_ready_wait to be satisified before
* issuing the new request to LLD.
*/
struct mmc_cmdq_context_info {
unsigned long active_reqs; /* in-flight requests */
unsigned long data_active_reqs; /* in-flight data requests */
unsigned long curr_state;
#define CMDQ_STATE_ERR 0
#define CMDQ_STATE_DCMD_ACTIVE 1
#define CMDQ_STATE_HALT 2
#define CMDQ_STATE_CQ_DISABLE 3
#define CMDQ_STATE_REQ_TIMED_OUT 4
wait_queue_head_t queue_empty_wq;
wait_queue_head_t wait;
int active_small_sector_read_reqs;
};
/**
* 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 */
};
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
* @clk_scaling_in_progress: flag indicating if there's ongoing frequency change
* @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
*/
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 clk_scaling_in_progress;
bool is_busy_started;
bool enable;
};
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;
const struct mmc_cmdq_host_ops *cmdq_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_1_8V_DDR (1 << 11) /* can support */
/* DDR mode at 1.8V */
#define MMC_CAP_1_2V_DDR (1 << 12) /* can support */
/* DDR mode at 1.2V */
#define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off after boot */
#define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus width ok */
#define MMC_CAP_UHS_SDR12 (1 << 15) /* Host supports UHS SDR12 mode */
#define MMC_CAP_UHS_SDR25 (1 << 16) /* Host supports UHS SDR25 mode */
#define MMC_CAP_UHS_SDR50 (1 << 17) /* Host supports UHS SDR50 mode */
#define MMC_CAP_UHS_SDR104 (1 << 18) /* Host supports UHS SDR104 mode */
#define MMC_CAP_UHS_DDR50 (1 << 19) /* Host supports UHS DDR50 mode */
#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_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 */
u32 cached_caps2;
#define MMC_CAP2_BOOTPART_NOACC (1 << 0) /* Boot partition no access */
#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_HS200 (MMC_CAP2_HS200_1_8V_SDR | \
MMC_CAP2_HS200_1_2V_SDR)
#define MMC_CAP2_HC_ERASE_SZ (1 << 9) /* High-capacity erase size */
#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_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_PACKED_WR_CONTROL (1 << 23) /* Allow write packing control */
#define MMC_CAP2_CLK_SCALE (1 << 24) /* Allow dynamic clk scaling */
#define MMC_CAP2_ASYNC_SDIO_IRQ_4BIT_MODE (1 << 25) /* Allows Asynchronous SDIO irq while card is in 4-bit mode */
#define MMC_CAP2_NONHOTPLUG (1 << 26) /*Don't support hotplug*/
/* Some hosts need additional tuning */
#define MMC_CAP2_HS400_POST_TUNING (1 << 27)
#define MMC_CAP2_CMD_QUEUE (1 << 28) /* support eMMC command queue */
#define MMC_CAP2_SANITIZE (1 << 29) /* Support Sanitize */
#define MMC_CAP2_SLEEP_AWAKE (1 << 30) /* Use Sleep/Awake (CMD5) */
/* use max discard ignoring max_busy_timeout parameter */
#define MMC_CAP2_MAX_DISCARD_SIZE (1 << 31)
mmc_pm_flag_t pm_caps; /* supported pm features */
#ifdef CONFIG_MMC_CLKGATE
int clk_requests; /* internal reference counter */
unsigned int clk_delay; /* number of MCI clk hold cycles */
bool clk_gated; /* clock gated */
struct workqueue_struct *clk_gate_wq; /* clock gate work queue */
struct delayed_work clk_gate_work; /* delayed clock gate */
unsigned int clk_old; /* old clock value cache */
spinlock_t clk_lock; /* lock for clk fields */
struct mutex clk_gate_mutex; /* mutex for clock gating */
struct device_attribute clkgate_delay_attr;
unsigned long clkgate_delay;
#endif
/* 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 */
#ifdef CONFIG_MMC_DEBUG
unsigned int removed:1; /* host is being removed */
#endif
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 */
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 task_struct *claimer; /* task that has host claimed */
struct task_struct *suspend_task;
int claim_cnt; /* "claim" nesting count */
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;
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];
struct mmc_async_req *areq; /* active async req */
struct mmc_context_info context_info; /* async synchronization info */
/* 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 */
#ifdef CONFIG_MMC_EMBEDDED_SDIO
struct {
struct sdio_cis *cis;
struct sdio_cccr *cccr;
struct sdio_embedded_func *funcs;
int num_funcs;
} embedded_sdio_data;
#endif
#ifdef CONFIG_BLOCK
int latency_hist_enabled;
struct io_latency_state io_lat_read;
struct io_latency_state io_lat_write;
#endif
bool sdr104_wa;
/*
* 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
struct mmc_trace_buffer trace_buf;
enum dev_state dev_status;
bool wakeup_on_idle;
struct mmc_cmdq_context_info cmdq_ctx;
int num_cq_slots;
int dcmd_cq_slot;
bool cmdq_thist_enabled;
/*
* several cmdq supporting host controllers are extensions
* of legacy controllers. This variable can be used to store
* a reference to the cmdq extension of the existing host
* controller.
*/
void *cmdq_private;
struct mmc_request *err_mrq;
atomic_t rpmb_req_pending;
struct mutex rpmb_req_mutex;
unsigned long private[0] ____cacheline_aligned;
};
struct mmc_host *mmc_alloc_host(int extra, struct device *);
extern bool mmc_host_may_gate_card(struct mmc_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);
#ifdef CONFIG_MMC_EMBEDDED_SDIO
extern void mmc_set_embedded_sdio_data(struct mmc_host *host,
struct sdio_cis *cis,
struct sdio_cccr *cccr,
struct sdio_embedded_func *funcs,
int num_funcs);
#endif
static inline void *mmc_priv(struct mmc_host *host)
{
return (void *)host->private;
}
static inline void *mmc_cmdq_private(struct mmc_host *host)
{
return host->cmdq_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)
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;
}
extern int mmc_resume_bus(struct mmc_host *host);
int mmc_power_save_host(struct mmc_host *host);
int mmc_power_restore_host(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);
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);
#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
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 int mmc_host_cmd23(struct mmc_host *host)
{
return host->caps & MMC_CAP_CMD23;
}
static inline int mmc_boot_partition_access(struct mmc_host *host)
{
return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
}
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 int mmc_host_uhs(struct mmc_host *host)
{
return host->caps &
(MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
MMC_CAP_UHS_DDR50);
}
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_host_packed_wr(struct mmc_host *host)
{
return host->caps2 & MMC_CAP2_PACKED_WR;
}
static inline void mmc_host_set_halt(struct mmc_host *host)
{
set_bit(CMDQ_STATE_HALT, &host->cmdq_ctx.curr_state);
}
static inline void mmc_host_clr_halt(struct mmc_host *host)
{
clear_bit(CMDQ_STATE_HALT, &host->cmdq_ctx.curr_state);
}
static inline int mmc_host_halt(struct mmc_host *host)
{
return test_bit(CMDQ_STATE_HALT, &host->cmdq_ctx.curr_state);
}
static inline void mmc_host_set_cq_disable(struct mmc_host *host)
{
set_bit(CMDQ_STATE_CQ_DISABLE, &host->cmdq_ctx.curr_state);
}
static inline void mmc_host_clr_cq_disable(struct mmc_host *host)
{
clear_bit(CMDQ_STATE_CQ_DISABLE, &host->cmdq_ctx.curr_state);
}
static inline int mmc_host_cq_disable(struct mmc_host *host)
{
return test_bit(CMDQ_STATE_CQ_DISABLE, &host->cmdq_ctx.curr_state);
}
#ifdef CONFIG_MMC_CLKGATE
void mmc_host_clk_hold(struct mmc_host *host);
void mmc_host_clk_release(struct mmc_host *host);
unsigned int mmc_host_clk_rate(struct mmc_host *host);
#else
static inline void mmc_host_clk_hold(struct mmc_host *host)
{
}
static inline void mmc_host_clk_release(struct mmc_host *host)
{
}
static inline unsigned int mmc_host_clk_rate(struct mmc_host *host)
{
return host->ios.clock;
}
#endif
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;
}
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;
}
static inline bool mmc_card_hs200(struct mmc_card *card)
{
return card->host->ios.timing == MMC_TIMING_MMC_HS200;
}
static inline bool mmc_card_ddr52(struct mmc_card *card)
{
return card->host->ios.timing == MMC_TIMING_MMC_DDR52;
}
static inline bool mmc_card_hs400(struct mmc_card *card)
{
return card->host->ios.timing == MMC_TIMING_MMC_HS400;
}
static inline bool mmc_card_hs400es(struct mmc_card *card)
{
return card->host->ios.enhanced_strobe;
}
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 void mmc_retune_recheck(struct mmc_host *host)
{
if (host->hold_retune <= 1)
host->retune_now = 1;
}
void mmc_retune_pause(struct mmc_host *host);
void mmc_retune_unpause(struct mmc_host *host);
#endif /* LINUX_MMC_HOST_H */