tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/include/linux/mmc/card.h
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * Card driver specific definitions.
9 */
10#ifndef LINUX_MMC_CARD_H
11#define LINUX_MMC_CARD_H
12
13#include <linux/mmc/core.h>
14
15struct mmc_cid {
16 unsigned int manfid;
17 char prod_name[8];
18 unsigned int serial;
19 unsigned short oemid;
20 unsigned short year;
21 unsigned char hwrev;
22 unsigned char fwrev;
23 unsigned char month;
24};
25
26struct mmc_csd {
27 unsigned char structure;
28 unsigned char mmca_vsn;
29 unsigned short cmdclass;
30 unsigned short tacc_clks;
31 unsigned int tacc_ns;
32 unsigned int r2w_factor;
33 unsigned int max_dtr;
34 unsigned int erase_size; /* In sectors */
35 unsigned int read_blkbits;
36 unsigned int write_blkbits;
37 unsigned int capacity;
38 unsigned int read_partial:1,
39 read_misalign:1,
40 write_partial:1,
41 write_misalign:1;
42};
43
44struct mmc_ext_csd {
45 u8 rev;
46 u8 erase_group_def;
47 u8 sec_feature_support;
48 unsigned int sa_timeout; /* Units: 100ns */
49 unsigned int hs_max_dtr;
50 unsigned int sectors;
51 unsigned int hc_erase_size; /* In sectors */
52 unsigned int hc_erase_timeout; /* In milliseconds */
53 unsigned int sec_trim_mult; /* Secure trim multiplier */
54 unsigned int sec_erase_mult; /* Secure erase multiplier */
55 unsigned int trim_timeout; /* In milliseconds */
56};
57
58struct sd_scr {
59 unsigned char sda_vsn;
60 unsigned char bus_widths;
61#define SD_SCR_BUS_WIDTH_1 (1<<0)
62#define SD_SCR_BUS_WIDTH_4 (1<<2)
63};
64
65struct sd_ssr {
66 unsigned int au; /* In sectors */
67 unsigned int erase_timeout; /* In milliseconds */
68 unsigned int erase_offset; /* In milliseconds */
69};
70
71struct sd_switch_caps {
72 unsigned int hs_max_dtr;
73};
74
75struct sdio_cccr {
76 unsigned int sdio_vsn;
77 unsigned int sd_vsn;
78 unsigned int multi_block:1,
79 low_speed:1,
80 wide_bus:1,
81 high_power:1,
82 high_speed:1,
83 disable_cd:1;
84};
85
86struct sdio_cis {
87 unsigned short vendor;
88 unsigned short device;
89 unsigned short blksize;
90 unsigned int max_dtr;
91};
92
93struct mmc_host;
94struct sdio_func;
95struct sdio_func_tuple;
96
97#define SDIO_MAX_FUNCS 7
98
99/*
100 * MMC device
101 */
102struct mmc_card {
103 struct mmc_host *host; /* the host this device belongs to */
104 struct device dev; /* the device */
105 unsigned int rca; /* relative card address of device */
106 unsigned int type; /* card type */
107#define MMC_TYPE_MMC 0 /* MMC card */
108#define MMC_TYPE_SD 1 /* SD card */
109#define MMC_TYPE_SDIO 2 /* SDIO card */
110#define MMC_TYPE_SD_COMBO 3 /* SD combo (IO+mem) card */
111 unsigned int state; /* (our) card state */
112#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
113#define MMC_STATE_READONLY (1<<1) /* card is read-only */
114#define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
115#define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
116 unsigned int quirks; /* card quirks */
117#define MMC_QUIRK_LENIENT_FN0 (1<<0) /* allow SDIO FN0 writes outside of the VS CCCR range */
118#define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use func->cur_blksize */
119 /* for byte mode */
120#define MMC_QUIRK_NONSTD_SDIO (1<<2) /* non-standard SDIO card attached */
121 /* (missing CIA registers) */
122
123 unsigned int erase_size; /* erase size in sectors */
124 unsigned int erase_shift; /* if erase unit is power 2 */
125 unsigned int pref_erase; /* in sectors */
126 u8 erased_byte; /* value of erased bytes */
127
128 u32 raw_cid[4]; /* raw card CID */
129 u32 raw_csd[4]; /* raw card CSD */
130 u32 raw_scr[2]; /* raw card SCR */
131 struct mmc_cid cid; /* card identification */
132 struct mmc_csd csd; /* card specific */
133 struct mmc_ext_csd ext_csd; /* mmc v4 extended card specific */
134 struct sd_scr scr; /* extra SD information */
135 struct sd_ssr ssr; /* yet more SD information */
136 struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
137
138 unsigned int sdio_funcs; /* number of SDIO functions */
139 struct sdio_cccr cccr; /* common card info */
140 struct sdio_cis cis; /* common tuple info */
141 struct sdio_func *sdio_func[SDIO_MAX_FUNCS]; /* SDIO functions (devices) */
142 unsigned num_info; /* number of info strings */
143 const char **info; /* info strings */
144 struct sdio_func_tuple *tuples; /* unknown common tuples */
145
146 struct dentry *debugfs_root;
147};
148
149#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
150#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
151#define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO)
152
153#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
154#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
155#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED)
156#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
157
158#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
159#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
160#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
161#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
162
163static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
164{
165 return c->quirks & MMC_QUIRK_LENIENT_FN0;
166}
167
168static inline int mmc_blksz_for_byte_mode(const struct mmc_card *c)
169{
170 return c->quirks & MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
171}
172
173#define mmc_card_name(c) ((c)->cid.prod_name)
174#define mmc_card_id(c) (dev_name(&(c)->dev))
175
176#define mmc_list_to_card(l) container_of(l, struct mmc_card, node)
177#define mmc_get_drvdata(c) dev_get_drvdata(&(c)->dev)
178#define mmc_set_drvdata(c,d) dev_set_drvdata(&(c)->dev, d)
179
180/*
181 * MMC device driver (e.g., Flash card, I/O card...)
182 */
183struct mmc_driver {
184 struct device_driver drv;
185 int (*probe)(struct mmc_card *);
186 void (*remove)(struct mmc_card *);
187 int (*suspend)(struct mmc_card *, pm_message_t);
188 int (*resume)(struct mmc_card *);
189};
190
191extern int mmc_register_driver(struct mmc_driver *);
192extern void mmc_unregister_driver(struct mmc_driver *);
193
194#endif