1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * linux/drivers/mmc/core/core.h
5 * Copyright (C) 2003 Russell King, All Rights Reserved.
6 * Copyright 2007 Pierre Ossman
8 #ifndef _MMC_CORE_CORE_H
9 #define _MMC_CORE_CORE_H
11 #include <linux/delay.h>
12 #include <linux/sched.h>
18 #define MMC_CMD_RETRIES 3
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 *);
36 void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
37 void mmc_detach_bus(struct mmc_host *host);
39 struct device_node *mmc_of_find_child_device(struct mmc_host *host,
42 void mmc_init_erase(struct mmc_card *card);
44 void mmc_set_chip_select(struct mmc_host *host, int mode);
45 void mmc_set_clock(struct mmc_host *host, unsigned int hz);
46 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
47 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
48 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
49 int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
50 int mmc_host_set_uhs_voltage(struct mmc_host *host);
51 int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
52 void mmc_set_initial_signal_voltage(struct mmc_host *host);
53 void mmc_set_timing(struct mmc_host *host, unsigned int timing);
54 void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
55 int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
56 int card_drv_type, int *drv_type);
57 void mmc_power_up(struct mmc_host *host, u32 ocr);
58 void mmc_power_off(struct mmc_host *host);
59 void mmc_power_cycle(struct mmc_host *host, u32 ocr);
60 void mmc_set_initial_state(struct mmc_host *host);
61 u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
63 static inline void mmc_delay(unsigned int ms)
66 usleep_range(ms * 1000, ms * 1250);
71 void mmc_rescan(struct work_struct *work);
72 void mmc_start_host(struct mmc_host *host);
73 void __mmc_stop_host(struct mmc_host *host);
74 void mmc_stop_host(struct mmc_host *host);
76 void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
78 int _mmc_detect_card_removed(struct mmc_host *host);
79 int mmc_detect_card_removed(struct mmc_host *host);
81 int mmc_attach_mmc(struct mmc_host *host);
82 int mmc_attach_sd(struct mmc_host *host);
83 int mmc_attach_sdio(struct mmc_host *host);
84 int mmc_attach_sd_uhs2(struct mmc_host *host);
86 /* Module parameters */
87 extern bool use_spi_crc;
89 /* Debugfs information for hosts and cards */
90 #ifdef CONFIG_DEBUG_FS
91 void mmc_add_host_debugfs(struct mmc_host *host);
92 void mmc_remove_host_debugfs(struct mmc_host *host);
94 void mmc_add_card_debugfs(struct mmc_card *card);
95 void mmc_remove_card_debugfs(struct mmc_card *card);
97 static inline void mmc_add_host_debugfs(struct mmc_host *host)
100 static inline void mmc_remove_host_debugfs(struct mmc_host *host)
103 static inline void mmc_add_card_debugfs(struct mmc_card *card)
106 static inline void mmc_remove_card_debugfs(struct mmc_card *card)
111 int mmc_execute_tuning(struct mmc_card *card);
112 int mmc_hs200_to_hs400(struct mmc_card *card);
113 int mmc_hs400_to_hs200(struct mmc_card *card);
115 void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
116 bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
118 int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
120 int mmc_erase(struct mmc_card *card, sector_t from, unsigned int nr, unsigned int arg);
121 int mmc_can_erase(struct mmc_card *card);
122 int mmc_can_trim(struct mmc_card *card);
123 int mmc_can_discard(struct mmc_card *card);
124 int mmc_can_sanitize(struct mmc_card *card);
125 int mmc_can_secure_erase_trim(struct mmc_card *card);
126 int mmc_erase_group_aligned(struct mmc_card *card, sector_t from, unsigned int nr);
127 unsigned int mmc_calc_max_discard(struct mmc_card *card);
129 int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
131 int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
133 void mmc_release_host(struct mmc_host *host);
134 void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
135 void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
137 int mmc_card_alternative_gpt_sector(struct mmc_card *card, sector_t *sector);
140 * mmc_claim_host - exclusively claim a host
141 * @host: mmc host to claim
143 * Claim a host for a set of operations.
145 static inline void mmc_claim_host(struct mmc_host *host)
147 __mmc_claim_host(host, NULL, NULL);
150 int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
151 void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
152 int mmc_cqe_recovery(struct mmc_host *host);
155 * mmc_pre_req - Prepare for a new request
156 * @host: MMC host to prepare command
157 * @mrq: MMC request to prepare for
159 * mmc_pre_req() is called in prior to mmc_start_req() to let
160 * host prepare for the new request. Preparation of a request may be
161 * performed while another request is running on the host.
163 static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
165 if (host->ops->pre_req)
166 host->ops->pre_req(host, mrq);
170 * mmc_post_req - Post process a completed request
171 * @host: MMC host to post process command
172 * @mrq: MMC request to post process for
173 * @err: Error, if non zero, clean up any resources made in pre_req
175 * Let the host post process a completed request. Post processing of
176 * a request may be performed while another request is running.
178 static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
181 if (host->ops->post_req)
182 host->ops->post_req(host, mrq, err);
185 static inline bool mmc_cache_enabled(struct mmc_host *host)
187 if (host->bus_ops->cache_enabled)
188 return host->bus_ops->cache_enabled(host);
193 static inline int mmc_flush_cache(struct mmc_host *host)
195 if (host->bus_ops->flush_cache)
196 return host->bus_ops->flush_cache(host);
201 static inline unsigned int mmc_sector_div(sector_t dividend, u32 divisor)
203 return div_u64(dividend, divisor);
206 static inline unsigned int mmc_sector_mod(sector_t dividend, u32 divisor)
208 return sector_div(dividend, divisor);