core.h
6.07 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/*
* linux/drivers/mmc/core/core.h
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
* Copyright 2007 Pierre Ossman
*
* 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.
*/
#ifndef _MMC_CORE_CORE_H
#define _MMC_CORE_CORE_H
#include <linux/delay.h>
#include <linux/sched.h>
struct mmc_host;
struct mmc_card;
struct mmc_request;
#define MMC_CMD_RETRIES 3
struct mmc_bus_ops {
void (*remove)(struct mmc_host *);
void (*detect)(struct mmc_host *);
int (*pre_suspend)(struct mmc_host *);
int (*suspend)(struct mmc_host *);
int (*resume)(struct mmc_host *);
int (*runtime_suspend)(struct mmc_host *);
int (*runtime_resume)(struct mmc_host *);
int (*power_save)(struct mmc_host *);
int (*power_restore)(struct mmc_host *);
int (*alive)(struct mmc_host *);
int (*shutdown)(struct mmc_host *);
int (*reset)(struct mmc_host *);
};
extern bool mmc_use_blk_mq;
void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
void mmc_detach_bus(struct mmc_host *host);
struct device_node *mmc_of_find_child_device(struct mmc_host *host,
unsigned func_num);
void mmc_init_erase(struct mmc_card *card);
void mmc_set_chip_select(struct mmc_host *host, int mode);
void mmc_set_clock(struct mmc_host *host, unsigned int hz);
void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
void mmc_set_timing(struct mmc_host *host, unsigned int timing);
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
int card_drv_type, int *drv_type);
void mmc_power_up(struct mmc_host *host, u32 ocr);
void mmc_power_off(struct mmc_host *host);
void mmc_power_cycle(struct mmc_host *host, u32 ocr);
void mmc_set_initial_state(struct mmc_host *host);
static inline void mmc_delay(unsigned int ms)
{
if (ms < 1000 / HZ) {
cond_resched();
mdelay(ms);
} else {
msleep(ms);
}
}
void mmc_rescan(struct work_struct *work);
void mmc_start_host(struct mmc_host *host);
void mmc_stop_host(struct mmc_host *host);
int _mmc_detect_card_removed(struct mmc_host *host);
int mmc_detect_card_removed(struct mmc_host *host);
int mmc_attach_mmc(struct mmc_host *host);
int mmc_attach_sd(struct mmc_host *host);
int mmc_attach_sdio(struct mmc_host *host);
int mmc_first_nonreserved_index(void);
int mmc_get_reserved_index(struct mmc_host *host);
/* Module parameters */
extern bool use_spi_crc;
/* Debugfs information for hosts and cards */
void mmc_add_host_debugfs(struct mmc_host *host);
void mmc_remove_host_debugfs(struct mmc_host *host);
void mmc_add_card_debugfs(struct mmc_card *card);
void mmc_remove_card_debugfs(struct mmc_card *card);
void mmc_init_context_info(struct mmc_host *host);
int mmc_execute_tuning(struct mmc_card *card);
int mmc_hs200_to_hs400(struct mmc_card *card);
int mmc_hs400_to_hs200(struct mmc_card *card);
#ifdef CONFIG_PM_SLEEP
void mmc_register_pm_notifier(struct mmc_host *host);
void mmc_unregister_pm_notifier(struct mmc_host *host);
#else
static inline void mmc_register_pm_notifier(struct mmc_host *host) { }
static inline void mmc_unregister_pm_notifier(struct mmc_host *host) { }
#endif
void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
struct mmc_async_req;
struct mmc_async_req *mmc_start_areq(struct mmc_host *host,
struct mmc_async_req *areq,
enum mmc_blk_status *ret_stat);
int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
unsigned int arg);
int mmc_can_erase(struct mmc_card *card);
int mmc_can_trim(struct mmc_card *card);
int mmc_can_discard(struct mmc_card *card);
int mmc_can_sanitize(struct mmc_card *card);
int mmc_can_secure_erase_trim(struct mmc_card *card);
int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
unsigned int nr);
unsigned int mmc_calc_max_discard(struct mmc_card *card);
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
int mmc_set_blockcount(struct mmc_card *card, unsigned int blockcount,
bool is_rel_write);
int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
atomic_t *abort);
void mmc_release_host(struct mmc_host *host);
void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
/**
* mmc_claim_host - exclusively claim a host
* @host: mmc host to claim
*
* Claim a host for a set of operations.
*/
static inline void mmc_claim_host(struct mmc_host *host)
{
__mmc_claim_host(host, NULL, NULL);
}
int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
int mmc_cqe_recovery(struct mmc_host *host);
/**
* mmc_pre_req - Prepare for a new request
* @host: MMC host to prepare command
* @mrq: MMC request to prepare for
*
* mmc_pre_req() is called in prior to mmc_start_req() to let
* host prepare for the new request. Preparation of a request may be
* performed while another request is running on the host.
*/
static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
{
if (host->ops->pre_req)
host->ops->pre_req(host, mrq);
}
/**
* mmc_post_req - Post process a completed request
* @host: MMC host to post process command
* @mrq: MMC request to post process for
* @err: Error, if non zero, clean up any resources made in pre_req
*
* Let the host post process a completed request. Post processing of
* a request may be performed while another request is running.
*/
static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
int err)
{
if (host->ops->post_req)
host->ops->post_req(host, mrq, err);
}
#endif