203 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * linux/drivers/mmc/core/core.h4 *5 * Copyright (C) 2003 Russell King, All Rights Reserved.6 * Copyright 2007 Pierre Ossman7 */8#ifndef _MMC_CORE_CORE_H9#define _MMC_CORE_CORE_H10 11#include <linux/delay.h>12#include <linux/sched.h>13 14struct mmc_host;15struct mmc_card;16struct mmc_request;17 18#define MMC_CMD_RETRIES 319 20struct mmc_bus_ops {21 void (*remove)(struct mmc_host *);22 void (*detect)(struct mmc_host *);23 int (*pre_suspend)(struct mmc_host *);24 int (*suspend)(struct mmc_host *);25 int (*resume)(struct mmc_host *);26 int (*runtime_suspend)(struct mmc_host *);27 int (*runtime_resume)(struct mmc_host *);28 int (*alive)(struct mmc_host *);29 int (*shutdown)(struct mmc_host *);30 int (*hw_reset)(struct mmc_host *);31 int (*sw_reset)(struct mmc_host *);32 bool (*cache_enabled)(struct mmc_host *);33 int (*flush_cache)(struct mmc_host *);34};35 36void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);37void mmc_detach_bus(struct mmc_host *host);38 39struct device_node *mmc_of_find_child_device(struct mmc_host *host,40 unsigned func_num);41 42void mmc_init_erase(struct mmc_card *card);43 44void mmc_set_chip_select(struct mmc_host *host, int mode);45void mmc_set_clock(struct mmc_host *host, unsigned int hz);46void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);47void mmc_set_bus_width(struct mmc_host *host, unsigned int width);48u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);49int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);50int mmc_host_set_uhs_voltage(struct mmc_host *host);51int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);52void mmc_set_initial_signal_voltage(struct mmc_host *host);53void mmc_set_timing(struct mmc_host *host, unsigned int timing);54void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);55int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,56 int card_drv_type, int *drv_type);57void mmc_power_up(struct mmc_host *host, u32 ocr);58void mmc_power_off(struct mmc_host *host);59void mmc_power_cycle(struct mmc_host *host, u32 ocr);60void mmc_set_initial_state(struct mmc_host *host);61u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);62 63static inline void mmc_delay(unsigned int ms)64{65 if (ms <= 20)66 usleep_range(ms * 1000, ms * 1250);67 else68 msleep(ms);69}70 71void mmc_rescan(struct work_struct *work);72void mmc_start_host(struct mmc_host *host);73void __mmc_stop_host(struct mmc_host *host);74void mmc_stop_host(struct mmc_host *host);75 76void _mmc_detect_change(struct mmc_host *host, unsigned long delay,77 bool cd_irq);78int _mmc_detect_card_removed(struct mmc_host *host);79int mmc_detect_card_removed(struct mmc_host *host);80 81int mmc_attach_mmc(struct mmc_host *host);82int mmc_attach_sd(struct mmc_host *host);83int mmc_attach_sdio(struct mmc_host *host);84 85/* Module parameters */86extern bool use_spi_crc;87 88/* Debugfs information for hosts and cards */89#ifdef CONFIG_DEBUG_FS90void mmc_add_host_debugfs(struct mmc_host *host);91void mmc_remove_host_debugfs(struct mmc_host *host);92 93void mmc_add_card_debugfs(struct mmc_card *card);94void mmc_remove_card_debugfs(struct mmc_card *card);95#else96static inline void mmc_add_host_debugfs(struct mmc_host *host)97{98}99static inline void mmc_remove_host_debugfs(struct mmc_host *host)100{101}102static inline void mmc_add_card_debugfs(struct mmc_card *card)103{104}105static inline void mmc_remove_card_debugfs(struct mmc_card *card)106{107}108#endif109 110int mmc_execute_tuning(struct mmc_card *card);111int mmc_hs200_to_hs400(struct mmc_card *card);112int mmc_hs400_to_hs200(struct mmc_card *card);113 114void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);115bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);116 117int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);118 119int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,120 unsigned int arg);121int mmc_can_erase(struct mmc_card *card);122int mmc_can_trim(struct mmc_card *card);123int mmc_can_discard(struct mmc_card *card);124int mmc_can_sanitize(struct mmc_card *card);125int mmc_can_secure_erase_trim(struct mmc_card *card);126int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,127 unsigned int nr);128unsigned int mmc_calc_max_discard(struct mmc_card *card);129 130int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);131 132int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,133 atomic_t *abort);134void mmc_release_host(struct mmc_host *host);135void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);136void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);137 138int mmc_card_alternative_gpt_sector(struct mmc_card *card, sector_t *sector);139 140/**141 * mmc_claim_host - exclusively claim a host142 * @host: mmc host to claim143 *144 * Claim a host for a set of operations.145 */146static inline void mmc_claim_host(struct mmc_host *host)147{148 __mmc_claim_host(host, NULL, NULL);149}150 151int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);152void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);153int mmc_cqe_recovery(struct mmc_host *host);154 155/**156 * mmc_pre_req - Prepare for a new request157 * @host: MMC host to prepare command158 * @mrq: MMC request to prepare for159 *160 * mmc_pre_req() is called in prior to mmc_start_req() to let161 * host prepare for the new request. Preparation of a request may be162 * performed while another request is running on the host.163 */164static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)165{166 if (host->ops->pre_req)167 host->ops->pre_req(host, mrq);168}169 170/**171 * mmc_post_req - Post process a completed request172 * @host: MMC host to post process command173 * @mrq: MMC request to post process for174 * @err: Error, if non zero, clean up any resources made in pre_req175 *176 * Let the host post process a completed request. Post processing of177 * a request may be performed while another request is running.178 */179static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,180 int err)181{182 if (host->ops->post_req)183 host->ops->post_req(host, mrq, err);184}185 186static inline bool mmc_cache_enabled(struct mmc_host *host)187{188 if (host->bus_ops->cache_enabled)189 return host->bus_ops->cache_enabled(host);190 191 return false;192}193 194static inline int mmc_flush_cache(struct mmc_host *host)195{196 if (host->bus_ops->flush_cache)197 return host->bus_ops->flush_cache(host);198 199 return 0;200}201 202#endif203